Welding positioning device and welding equipment

Abstract

The utility model discloses a welding positioning device and welding equipment, the welding equipment comprises a welding head and a turntable, the welding positioning device comprises a fixed block, a movable block and an elastic piece, the fixed block is fixedly installed on the turntable, and the movable block is movably installed on the turntable, so that the movable block can move in the direction close to or away from the fixed block; the elastic piece is installed on the rotary disc, one end of the elastic piece abuts against the movable block, and the elastic piece is used for driving the movable block to move in the direction close to the fixed block, so that the movable block and the fixed block jointly clamp the battery under driving of the elastic piece. According to the technical scheme, the elastic piece is used for driving the movable block to move, so that the movable block and the fixed block are matched to jointly clamp the battery, the structure of the welding positioning device is optimized, and then the structure of the welding equipment is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery manufacturing, in particular to a welding positioning device and welding equipment. Background Art

[0002] In the prior art, when welding the periphery of the battery top cover, the movable block is driven by an air pump to cooperate with the fixed block to clamp and position the battery cell. This requires the provision of an additional connecting structure to install the air pump on a turntable to install the conduit and power cord connected to the air pump to prevent the conduit and power cord connected to the air pump from being pulled and damaged during the rotation of the turntable, which results in a more complicated structure of the welding equipment. Utility Model Content

[0003] The main purpose of the utility model is to provide a welding positioning device, which aims to solve the problem that in the prior art, when welding the periphery of the battery cell top cover, the battery cell is clamped and positioned by driving the movable block in cooperation with the fixed block by an air pump, and an additional connecting structure is required to install the air pump on the turntable, resulting in a more complicated structure of the welding equipment.

[0004] To achieve the above-mentioned purpose, the welding positioning device proposed in the utility model is applied to welding equipment, wherein the welding equipment includes a welding head and a turntable, and the welding positioning device includes a fixed block, a movable block and an elastic member; wherein,

[0005] The fixing block is fixedly mounted on the rotating disk;

[0006] The movable block is movably mounted on the rotating disk so that the movable block can move in a direction close to or away from the fixed block;

[0007] The elastic member is mounted on the turntable, one end of the elastic member is in contact with the movable block, and the elastic member is used to drive the movable block to move toward the fixed block, so that the movable block can clamp the battery together with the fixed block under the drive of the elastic member.

[0008] In some embodiments of the utility model, the welding positioning device further comprises a boss, and the boss is mounted on the surface of the rotating disk facing the movable block;

[0009] The movable block is located at a side of the elastic member away from the rotating disk, so that the movable block covers the elastic member;

[0010] A driving part is protruded from the surface of the movable block facing the rotating disk, and the driving part is located between the boss and the fixed block;

[0011] One end of the elastic member is mounted on the boss to abut against the turntable through the boss, and the other end of the elastic member abuts against the driving part.

[0012] In some embodiments of the utility model, the boss is provided with a waist-shaped hole in a direction close to or away from the rotating disk, and the waist-shaped hole extends in a direction close to or away from the fixing block, so that the boss can move in a direction close to or away from the fixing block;

[0013] The welding positioning device also includes a screw, which passes through the waist-shaped hole and is connected to the turntable. The screw is used to limit and release the boss.

[0014] In some embodiments of the utility model, the welding positioning device comprises a limit block, the limit block is installed on the turntable, a limit groove is concavely provided on the surface of the limit block away from the turntable, and the limit groove extends in a direction close to or away from the fixed block;

[0015] The movable block is provided with a limiting convex portion at one end facing the limiting block, the limiting convex portion extends into the limiting groove, and the limiting groove cooperates with the limiting convex portion to limit the travel of the movable block.

[0016] In some embodiments of the utility model, a surface of the movable block away from the turntable is provided with an abutment protrusion, and a surface of the abutment protrusion facing the fixed block and a surface of the movable block facing the fixed block are located in the same plane, so that when the movable block and the fixed block jointly clamp the battery, the abutment protrusion abuts against the battery.

[0017] In some embodiments of the present invention, a flexible member is provided on the surface of the movable block facing the fixed block, and when the movable block and the fixed block jointly clamp the battery, the flexible member abuts against the battery.

[0018] In some embodiments of the utility model, the number of the fixed blocks is two, the number of the movable blocks is two, one fixed block and one movable block are respectively provided at both ends of the battery in the width direction, and another fixed block and another movable block are respectively provided at both ends of the battery in the length direction;

[0019] The number of the elastic members is two, and the two elastic members act on the two movable blocks respectively, so that the two movable blocks and the two fixed blocks clamp the battery together.

[0020] In some embodiments of the present utility model, the welding positioning device further includes an unlocking module, and the unlocking module has an initial state and an unlocking state;

[0021] When the unlocking module is in the initial state, the unlocking module and the movable block are spaced apart;

[0022] When the unlocking module switches from the initial state to the unlocking state, the unlocking module abuts against the movable block and drives the movable block to move in a direction away from the fixed block, so that the movable block and the fixed block release the limitation on the battery.

[0023] In some embodiments of the utility model, a force-bearing portion is protruded from a surface of the movable block away from the rotating disk;

[0024] The unlocking module comprises a driving member and a transmission member, wherein the driving member is drivingly connected to the transmission member to drive the transmission member to move in a direction close to or away from the fixing block;

[0025] The transmission member comprises a connecting portion and a transmission portion connected to each other, the connecting portion extends in a direction close to the fixed block, one end of the transmission portion is connected to an end of the connecting portion close to the fixed block, and the other end of the transmission portion extends in a direction close to the turntable and is located between the force-bearing portion and the fixed block;

[0026] When the unlocking module is in the initial state, the transmission part and the force-bearing part are spaced apart from each other;

[0027] When the unlocking module switches from the initial state to the unlocking state, the transmission part abuts against the force-bearing part and drives the force-bearing part to move in a direction away from the fixed block, so that the movable block and the fixed block release the limitation on the battery.

[0028] The utility model also provides a welding device, which comprises a welding head, a rotating plate and the above-mentioned welding positioning device.

[0029] The technical solution of the utility model, its welding positioning device includes a fixed block, a movable block and an elastic member; wherein the fixed block is fixedly mounted on the turntable; the movable block is movably mounted on the turntable so that the movable block can move in the direction close to or away from the fixed block; the elastic member is mounted on the turntable, one end of the elastic member is in contact with the movable block, and the elastic member is used to drive the movable block to move in the direction close to the fixed block so that the movable block can clamp the battery together with the fixed block under the drive of the elastic member. With such a configuration, the elastic member is used to drive the movable block to move so that the movable block and the fixed block can cooperate to clamp the battery together, thereby eliminating the need to install the conduit and power cord connected to the air pump, thereby reducing the setting of the connection structure, thereby optimizing the structure of the welding positioning device, and further simplifying the structure of the welding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 This is a structural schematic diagram of an embodiment of the welding equipment of the utility model;

[0032] Figure 2 for Figure 1 Partial explosion photo of the welding positioning device;

[0033] Figure 3 for Figure 1 A partial cross-sectional view of the welding positioning device;

[0034] Figure 4 for Figure 1 Schematic diagram of the unlocking module.

[0035] Description of Figure Numbers:

[0036] 1000, welding equipment; 100, welding positioning device; 110, fixed block; 120, movable block; 121, driving part; 122, limiting convex part; 123, abutting convex part; 124, flexible part; 125, force-bearing part; 130, elastic part; 140, boss; 141, waist-shaped hole; 150, screw; 160, limiting block; 161, limiting groove; 170, unlocking module; 171, driving part; 172, transmission part; 172a, connecting part; 172b, transmission part; 200, turntable.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Please also read Figures 1 to 3 The utility model proposes a welding positioning device 100, which is applied to a welding device 1000. The welding device 1000 includes a welding head (not shown) and a turntable 200. The welding positioning device 100 includes a fixed block 110, a movable block 120 and an elastic member 130; wherein the fixed block 110 is fixedly mounted on the turntable 200, and the movable block 120 is movably mounted on the turntable 200, so that the movable block 120 can move in a direction close to or away from the fixed block 110; the elastic member 130 is mounted on the turntable 200, one end of the elastic member 130 is in contact with the movable block 120, and the elastic member 130 is used to drive the movable block 120 to move in a direction close to the fixed block 110, so that the movable block 120 and the fixed block 110 can clamp the battery together under the drive of the elastic member 130.

[0042] It should be noted that the movable block 120 and the fixed block 110 jointly clamp the battery on the rotation center axis of the turntable 200, so that when the turntable 200 rotates, the periphery of the battery top cover rotates around the rotation center axis of the turntable 200, so that the laser emitted by the welding head only acts on the periphery of the battery top cover.

[0043] There are many kinds of materials for making the movable block 120 and the fixed block 110. The movable block 120 and the fixed block 110 can be made of metal materials, the movable block 120 and the fixed block 110 can also be made of harder plastic, and the movable block 120 and the fixed block 110 can also be made of other materials, which are not specifically limited here. There are many ways to fix the fixed block 110 on the turntable 200. The fixed block 110 can be fixedly installed on the turntable 200 by connecting with screws 150, the fixed block 110 can also be fixedly installed on the turntable 200 by welding, and the fixed block 110 can also be fixedly installed on the turntable 200 by other ways, which are not specifically limited here.

[0044] There are many types of the elastic member 130 . The elastic member 130 may be a spring, an elastomer, or may be composed of two magnets, which are not listed here one by one.

[0045] When welding the battery top cover, first pull the movable block 120 to move away from the fixed block 110, then put the battery between the movable block 120 and the fixed block 110, then release the movable block 120, the movable block 120 will be driven by the elastic member 130 to move towards the fixed block 110, so that the movable block 120 and the fixed block 110 clamp the battery together, then start the turntable 200 and the laser head, the turntable 200 drives the movable block 120 and the fixed block 110 to rotate together, and the laser head welds the battery top cover. After the battery top cover is welded, first stop the work of the turntable 200 and the welding head, then pull the movable block 120 to move away from the fixed block 110, so that the movable block 120 and the fixed block 110 release the battery, and finally take out the battery.

[0046] The technical solution of the utility model, the welding positioning device 100 includes a fixed block 110, a movable block 120 and an elastic member 130; wherein the fixed block 110 is fixedly mounted on the turntable 200; the movable block 120 is movably mounted on the turntable 200, so that the movable block 120 can move in the direction close to or away from the fixed block 110; the elastic member 130 is mounted on the turntable 200, one end of the elastic member 130 is in contact with the movable block 120, and the elastic member 130 is used to drive the movable block 120 to move in the direction close to the fixed block 110, so that the movable block 120 clamps the battery together with the fixed block 110 under the drive of the elastic member 130. In this way, by using the elastic member 130 to drive the movable block 120 to move, so that the movable block 120 and the fixed block 110 cooperate to clamp the battery together, so that there is no need to install the conduit and the power cord connected to the air pump, so as to reduce the setting of the connection structure, thereby optimizing the structure of the welding positioning device 100, and further simplifying the structure of the welding equipment 1000.

[0047] Please also read Figures 1 to 3 In some embodiments of the utility model, the welding device 1000 further includes a boss 140, which is mounted on the surface of the turntable 200 facing the movable block 120; the movable block 120 is located on the side of the elastic member 130 away from the turntable 200, so that the movable block 120 covers the elastic member 130; the surface of the movable block 120 facing the turntable 200 is convexly provided with a driving part 121, and the driving part 121 is located between the boss 140 and the fixed block 110; one end of the elastic member 130 is mounted on the boss 140 to abut against the turntable 200 through the boss 140, and the other end of the elastic member 130 abuts against the driving part 121. In this way, by providing the boss 140 and the driving part 121, the elastic member 130 can be covered by the movable block 120, thereby reducing the contact between the elastic member 130 and the outside world, so as to protect the elastic member 130.

[0048] Further, the boss 140 is provided with a waist-shaped hole 141 in the direction of approaching or moving away from the rotating disk 200, and the waist-shaped hole 141 extends in the direction of approaching or moving away from the fixed block 110, so that the boss 140 can move in the direction of approaching or moving away from the fixed block 110, and the welding positioning device 100 also includes a screw 150, and the screw 150 is connected to the rotating disk 200 through the waist-shaped hole 141, and the screw 150 is used to limit and release the limit of the boss 140. In this way, when the screw 150 releases the limit of the boss 140, the distance between the boss 140 and the driving part 121 can be adjusted, so as to adjust the elastic force of the elastic member 130 when the movable block 120 and the fixed block 110 clamp the battery, and at the same time, the waist-shaped hole 141 cooperates with the screw 150 to play a guiding and limiting role, ensuring that the boss 140 moves in the direction of approaching or moving away from the driving part 121.

[0049] It can be understood that the boss 140 can move in a direction close to or away from the fixed block 110 through the cooperation of the waist-shaped hole 141 and the screw 150. When the elastic member 130 is a spring and the clamping force of the movable block 120 and the fixed block 110 needs to be increased, the limit of the boss 140 by the screw 150 is first released, and then the boss 140 is moved in a direction close to the fixed block 110, and finally the screw 150 is operated to limit the boss 140.

[0050] Please also read Figures 1 to 3In some embodiments of the utility model, the welding positioning device 100 includes a limit block 160, which is installed on the turntable 200. The surface of the limit block 160 away from the turntable 200 is concavely provided with a limit groove 161, and the limit groove 161 extends in a direction close to or away from the fixed block 110; the movable block 120 is provided with a limit convex portion 122 at one end facing the limit block 160, and the limit convex portion 122 extends into the limit groove 161, and the limit groove 161 cooperates with the limit convex portion 122 to limit the stroke of the movable block 120. In this way, the movement range of the movable block 120 is limited by the limit block 160, so as to avoid the movement range of the movable block 120 exceeding the elastic range of the elastic member 130 and causing damage to the elastic member 130.

[0051] Please also read Figures 1 to 3 In some embodiments of the utility model, the surface of the movable block 120 away from the rotating disk 200 is provided with a contact convex portion 123, and the surface of the contact convex portion 123 facing the fixed block 110 and the surface of the movable block 120 facing the fixed block 110 are located in the same plane, so that when the movable block 120 and the fixed block 110 jointly clamp the battery, the contact convex portion 123 abuts against the battery. In this way, the contact area between the movable block 120 and the battery can be increased, so that the movable block 120 and the fixed block 110 can clamp the battery more stably.

[0052] Please also read Figures 1 to 3 In some embodiments of the utility model, the surface of the movable block 120 facing the fixed block 110 is provided with a flexible member 124, and when the movable block 120 and the fixed block 110 clamp the battery together, the flexible member 124 abuts against the battery. With such a configuration, when the movable block 120 contacts the battery, the flexible member 124 can reduce the impact force on the battery, and the flexible member 124 has the ability to deform, which can increase the friction coefficient of the contact surface between the flexible member 124 and the battery, thereby enabling the movable block 120 and the fixed block 110 to clamp the battery more stably.

[0053] It should be noted that a flexible member 124 is also provided on the surface of the fixed block 110 facing the movable block 120 , so as to provide better protection.

[0054] Considering that one movable block 120 and one fixed block 110 can only clamp the battery in the width direction or the length direction, the battery is easy to fall off from the direction not clamped during the rotation of the turntable 200. In view of this, please refer to Figures 1 to 3There are two fixed blocks 110 and two movable blocks 120. The two ends of the battery in the width direction are provided with a fixed block 110 and a movable block 120 respectively. The two ends of the battery in the length direction are provided with another fixed block 110 and another movable block 120 respectively. There are two elastic members 130. The two elastic members 130 act on the two movable blocks 120 respectively, so that the two movable blocks 120 and the two fixed blocks 110 clamp the battery together. In this way, the two fixed blocks 110 and the two movable blocks 120 act on the four sides of the battery together, so as to better fix the battery, thereby preventing the battery from falling off the welding positioning device 100 during the rotation of the turntable 200.

[0055] Furthermore, abutment portions are convexly provided on the surfaces of the movable blocks 120 in the length direction of the battery facing the corresponding fixed blocks 110, the width of which is smaller than the width of the battery, and when the two movable blocks 120 and the two fixed blocks 110 jointly clamp the outer peripheral side of the battery, the movable blocks 120 in the length direction of the battery are spaced from the movable blocks 120 and the fixed blocks 110 on both sides in the width direction of the battery. In this arrangement, the movable blocks 120 in the length direction of the battery are in contact with the battery through the abutment portions, thereby avoiding interference between the movable blocks 120 in the width direction of the battery and the movable blocks 120 in the width direction of the battery.

[0056] Please also read Figures 1 to 4 In some embodiments of the present invention, the welding positioning device 100 further includes an unlocking module 170, which has an initial state and an unlocking state; when the unlocking module 170 is in the initial state, the unlocking module 170 is spaced apart from the movable block 120; when the unlocking module 170 switches from the initial state to the unlocking state, the unlocking module 170 abuts against the movable block 120 and drives the movable block 120 to move away from the fixed block 110, so that the movable block 120 and the fixed block 110 release the position limit on the battery. In this way, the automatic unlocking of the welding positioning device 100 can be achieved by setting the unlocking module 170, so that the staff can remove the welded battery from between the movable block 120 and the fixed block 110.

[0057] It should be understood that the unlocking module 170 is spaced apart from the movable block 120 in the initial state, and when the turntable 200 rotates, the unlocking module 170 and the movable block 120 will not interfere with each other. There are many types of the unlocking module 170, and the unlocking module 170 may be composed of a transverse movement assembly and a telescopic rod, the telescopic rod being installed in the transverse movement assembly, the telescopic rod being able to extend into the plug-in slot of the movable block 120, the transverse movement assembly being able to drive the telescopic rod to move in the direction of the movable block 120 approaching or away from the fixed block 110, thereby improving the telescopic rod driving the movable block 120 to move in the direction of approaching or away from the fixed block 110, and the transverse movement assembly and the telescopic rod in the state of exiting the plug-in slot of the movable block 120 are both spaced apart from the turntable 200 in the radial direction of the turntable 200.

[0058] Preferably, the surface of the movable block 120 away from the rotating disk 200 is convexly provided with a force-bearing portion 125; the unlocking module 170 includes a driving member 171 and a transmission member 172, the driving member 171 is drivingly connected to the transmission member 172 to drive the transmission member 172 to move in a direction close to or away from the fixed block 110; the transmission member 172 has a connecting portion 172a and a transmission portion 172b connected to each other, the connecting portion 172a extends in a direction close to the fixed block 110, and one end of the transmission portion 172b is connected to the connecting portion 172a close to the fixed block 110. 10 is connected, and the other end of the transmission part 172b extends toward the direction close to the turntable 200 and is located between the force-bearing part 125 and the fixed block 110; when the unlocking module 170 is in the initial state, the transmission part 172b and the force-bearing part 125 are spaced apart; when the unlocking module 170 is switched from the initial state to the unlocking state, the transmission part 172b abuts against the force-bearing part 125 and drives the force-bearing part 125 to move in the direction away from the fixed block 110, so that the movable block 120 and the fixed block 110 release the limit on the battery.

[0059] With such arrangement, the unlocking module 170 has a simple structure. When the battery needs to be unlocked, it is only necessary to control the driving member 171 to drive the transmission member 172 to move in a direction away from the fixed block 110. After the transmission part 172b of the transmission member 172 contacts the force-bearing part 125, it will drive the movable block 120 to move in a direction away from the fixed block 110, thereby unlocking the battery.

[0060] In some embodiments of the present invention, the unlocking module 170 includes a driving assembly and a transmission block. The driving assembly is connected to the transmission block in a driving manner. The driving assembly can drive the transmission block to move in a direction close to or away from the fixed block 110. The surface of the transmission block away from the turntable 200 is provided with a transmission convex portion. The movable block 120 is provided with a convex portion extending in a direction away from the fixed block 110. The surface of the convex portion facing the turntable 200 is provided with a force-bearing convex portion. The transmission convex portion is located between the force-bearing convex portion and the movable block 120. With such a configuration, the unlocking module 170 has a simple structure. When the battery needs to be unlocked, it is only necessary to control the driving assembly to drive the transmission block to move in a direction away from the fixed block 110. After the transmission convex portion of the transmission block contacts the force-bearing convex portion, the movable block 120 will be driven to move in a direction away from the fixed block 110, thereby unlocking the battery.

[0061] See also Figure 1 The utility model also proposes a welding device 1000, which includes a welding head, a turntable 200 and a welding positioning device 100. The specific structure of the welding positioning device 100 refers to the above embodiment. Since the welding device 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding positioning device, applied to a welding device, wherein the welding device comprises a welding head and a turntable, characterized in that: The welding positioning device comprises a fixed block, a movable block and an elastic member; wherein, The fixing block is fixedly mounted on the rotating disk; The movable block is movably mounted on the rotating disk so that the movable block can move in a direction close to or away from the fixed block; The elastic member is mounted on the turntable, one end of the elastic member is in contact with the movable block, and the elastic member is used to drive the movable block to move toward the fixed block, so that the movable block can clamp the battery together with the fixed block under the drive of the elastic member.

2. The welding positioning device according to claim 1, characterized in that: The welding positioning device further comprises a boss, which is mounted on the surface of the rotating disk facing the movable block; The movable block is located at a side of the elastic member away from the rotating disk, so that the movable block covers the elastic member; A driving part is protruded from the surface of the movable block facing the rotating disk, and the driving part is located between the boss and the fixed block; One end of the elastic member is mounted on the boss to abut against the turntable through the boss, and the other end of the elastic member abuts against the driving part.

3. The welding positioning device according to claim 2, characterized in that: The boss is provided with a waist-shaped hole in a direction close to or away from the rotating disk, and the waist-shaped hole extends in a direction close to or away from the fixing block, so that the boss can move in a direction close to or away from the fixing block; The welding positioning device also includes a screw, which passes through the waist-shaped hole and is connected to the turntable. The screw is used to limit and release the boss.

4. The welding positioning device according to claim 1, characterized in that: The welding positioning device comprises a limit block, which is mounted on the turntable, and a limit groove is concavely provided on the surface of the limit block away from the turntable, and the limit groove extends in a direction close to or away from the fixed block; The movable block is provided with a limiting convex portion at one end facing the limiting block, the limiting convex portion extends into the limiting groove, and the limiting groove cooperates with the limiting convex portion to limit the travel of the movable block.

5. The welding positioning device according to claim 1, characterized in that: A contact convex portion is provided on the surface of the movable block away from the turntable, and the surface of the contact convex portion facing the fixed block and the surface of the movable block facing the fixed block are located in the same plane, so that when the movable block and the fixed block jointly clamp the battery, the contact convex portion abuts against the battery.

6. The welding positioning device according to claim 1, characterized in that: A flexible member is disposed on the surface of the movable block facing the fixed block. When the movable block and the fixed block clamp the battery together, the flexible member abuts against the battery.

7. The welding positioning device according to any one of claims 1 to 6, characterized in that: The number of the fixed blocks is two, the number of the movable blocks is two, one fixed block and one movable block are respectively arranged at both ends of the battery in the width direction, and another fixed block and another movable block are respectively arranged at both ends of the battery in the length direction; The number of the elastic members is two, and the two elastic members act on the two movable blocks respectively, so that the two movable blocks and the two fixed blocks clamp the battery together.

8. The welding positioning device according to any one of claims 1 to 6, characterized in that: The welding positioning device further comprises an unlocking module, wherein the unlocking module has an initial state and an unlocking state; When the unlocking module is in the initial state, the unlocking module and the movable block are spaced apart; When the unlocking module switches from the initial state to the unlocking state, the unlocking module abuts against the movable block and drives the movable block to move in a direction away from the fixed block, so that the movable block and the fixed block release the limitation on the battery.

9. The welding positioning device according to claim 8, characterized in that: The surface of the movable block away from the rotating disk is convexly provided with a force-bearing portion; The unlocking module comprises a driving member and a transmission member, wherein the driving member is drivingly connected to the transmission member to drive the transmission member to move in a direction close to or away from the fixing block; The transmission member comprises a connecting portion and a transmission portion connected to each other, the connecting portion extends in a direction close to the fixed block, one end of the transmission portion is connected to an end of the connecting portion close to the fixed block, and the other end of the transmission portion extends in a direction close to the turntable and is located between the force-bearing portion and the fixed block; When the unlocking module is in the initial state, the transmission part and the force-bearing part are spaced apart from each other; When the unlocking module switches from the initial state to the unlocking state, the transmission part abuts against the force-bearing part and drives the force-bearing part to move in a direction away from the fixed block, so that the movable block and the fixed block release the limitation on the battery.

10. A welding device, characterized in that: The welding equipment comprises a welding head, a turntable and a welding positioning device as claimed in any one of claims 1 to 9.

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