A battery positive electrode spot welding apparatus

CN224406660UActive Publication Date: 2026-06-26HUIZHOU DESAY BATTERY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZHOU DESAY BATTERY
Filing Date
2025-06-23
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing spot welding equipment cannot accurately position the positive electrode when welding steel-cased batteries, resulting in poor welding quality.

Method used

A visual positioning unit is used to acquire the position information of the positive electrode of the battery and transmit it to the spot welding mechanism. The visual positioning unit acquires the position information of the positive electrode of the battery in the horizontal direction and the vertical position information is acquired through the sensing positioning unit, and then transmits it to the spot welding mechanism to achieve precise spot welding operation.

Benefits of technology

This improved the welding precision and quality of the battery positive electrode, thereby enhancing the overall quality of the battery product.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224406660U_ABST
    Figure CN224406660U_ABST
Patent Text Reader

Abstract

The utility model relates to battery production technical field discloses a kind of battery anode spot welding equipment, including conveying mechanism, and the battery anode positioning mechanism and spot welding mechanism sequentially arranged along the conveying direction of conveying mechanism;Battery anode positioning mechanism includes the visual positioning unit and sensing positioning unit being arranged in the upper of conveying mechanism, visual positioning unit is used to obtain the position information in the horizontal direction of battery anode and transmit to spot welding mechanism, sensing positioning unit is used to obtain the position information in the vertical direction of battery anode and transmit to spot welding mechanism.The utility model plays the following technical effect: by the cooperation of visual positioning unit and sensing positioning unit, the position parameter of battery anode in X direction, Y direction and Z direction can be accurately obtained, so that spot welding mechanism can accurately obtain the position information of battery anode and carry out accurate spot welding operation on target welding position, thereby the welding accuracy of battery anode can be improved, so as to improve welding quality and battery product quality.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of battery production technology, specifically relating to a battery positive electrode spot welding device. Background Technology

[0002] During the production of steel-cased batteries, the positive and negative terminals of the battery need to be electrically connected to a protection board to enable electrical connection between the battery and external devices. The specific process involves first welding the positive and negative connection pads to the corresponding positions on the protection board to form a protection board pad assembly. Then, the negative connection pad is welded to the negative terminal of the battery. By bending the negative connection pad, the protection board pad assembly is fitted to the top of the steel-cased battery. At this point, the positive connection pad is also attached to the positive terminal of the battery. Spot welding is then performed directly on the positive terminal of the battery using spot welding equipment, thus welding the positive connection pad to the positive terminal of the steel-cased battery.

[0003] However, existing spot welding equipment typically only positions the main body of the steel-cased battery before welding the positive electrode, without accurately positioning the target welding position, i.e., the positive electrode of the steel-cased battery. This makes it impossible for the spot welding equipment to accurately obtain the position information of the positive electrode of the steel-cased battery, and to precisely control the relative distance between the spot welding port and the target welding position, thus affecting the welding quality of the battery's positive electrode. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a battery positive electrode spot welding device. It acquires the horizontal position information of the battery positive electrode using a visual positioning unit and transmits it to the spot welding mechanism. It also acquires the vertical position information of the battery positive electrode using a sensor positioning unit and transmits it to the spot welding mechanism. This allows the spot welding mechanism to accurately acquire the position information of the battery positive electrode and perform precise spot welding at the target welding position, effectively improving the welding accuracy of the battery positive electrode, thereby improving welding quality and battery product quality.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0006] This utility model provides a battery positive electrode spot welding device, including a conveying mechanism, and a battery positive electrode positioning mechanism and a spot welding mechanism arranged sequentially along the conveying direction of the conveying mechanism;

[0007] The battery positive electrode positioning mechanism includes a visual positioning unit and a sensor positioning unit disposed above the conveying mechanism. The visual positioning unit is used to acquire the position information of the battery positive electrode in the horizontal direction and transmit it to the spot welding mechanism. The sensor positioning unit is used to acquire the position information of the battery positive electrode in the vertical direction and transmit it to the spot welding mechanism.

[0008] As a further description of the technical solution of this utility model, the visual positioning unit includes a CCD camera, and the sensing positioning unit includes a displacement sensor.

[0009] As a further description of the technical solution of this utility model, it also includes a battery positive electrode fixing mechanism, wherein the spot welding mechanism and the battery positive electrode fixing mechanism are respectively disposed on opposite sides of the conveying mechanism.

[0010] As a further description of the technical solution of this utility model, the battery positive electrode fixing mechanism includes a first fixing unit and a second fixing unit arranged sequentially along the conveying direction of the conveying mechanism.

[0011] The spot welding mechanism includes a laser spot welding unit, a first driving unit, and a second driving unit. The first driving unit drives the laser spot welding unit to move vertically, and the second driving unit drives the laser spot welding unit and the first driving unit to move horizontally. The laser spot welding unit operates between the first fixed unit and the second fixed unit.

[0012] As a further description of the technical solution of this utility model, the first fixing unit includes a support component and a pressing component disposed above the support component. The support component includes a support platform and a first driving member for driving the support platform to move in a vertical direction. The pressing component includes a pressing claw and a second driving member for driving the pressing claw to move in a vertical direction.

[0013] As a further description of the technical solution of this utility model, the driving end of the second driving member is also connected to a dust removal hood. The dust removal hood has an opening on the side near the conveying mechanism. The pressure claw is located inside the dust removal hood and the end of the pressure claw extends out of the outside of the dust removal hood through the opening.

[0014] As a further description of the technical solution of this utility model, a cleaning mechanism for cleaning the pressure claw is provided on one side of the first fixing unit. The cleaning mechanism includes a cleaning brush and a third driving unit for driving the cleaning brush to move closer to or away from the pressure claw.

[0015] As a further description of the technical solution of this utility model, it also includes a solder joint detection mechanism, wherein the battery positive electrode positioning mechanism, the spot welding mechanism and the solder joint detection mechanism are arranged sequentially along the conveying direction of the conveying mechanism.

[0016] As a further description of the technical solution of this utility model, a tag writing mechanism is provided above the conveying mechanism at a position corresponding to the battery positive electrode positioning mechanism, and a tag reading mechanism is provided above the conveying mechanism at a position corresponding to the spot welding mechanism.

[0017] As a further description of the technical solution of this utility model, the conveying mechanism includes a fourth drive unit, a linear guide rail, and a plurality of bearing fixtures slidably connected to the linear guide rail. The fourth drive unit is used to drive the bearing fixtures to move along the linear guide rail.

[0018] In summary, this utility model has at least the following advantages:

[0019] The battery positive electrode spot welding equipment provided by this utility model uses a visual positioning unit to visually position the battery positive electrode, acquiring its horizontal position information and transmitting it to the spot welding mechanism. This horizontal position information includes position parameters in the X and Y directions. A sensing positioning unit is also used to sensorily position the battery positive electrode, acquiring its vertical position information and transmitting it to the spot welding mechanism. This vertical position information corresponds to the position parameter in the Z direction. Through the cooperation of the visual positioning unit and the sensing positioning unit, the position parameters of the battery positive electrode in the X, Y, and Z directions can be accurately acquired. This allows the spot welding mechanism to accurately obtain the battery positive electrode's position information and perform precise spot welding at the target welding position. Therefore, the welding accuracy of the battery positive electrode can be effectively improved, thereby enhancing welding quality and the overall quality of the battery product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the battery positive electrode spot welding equipment according to Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the battery positive electrode positioning mechanism according to Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the battery positive electrode spot welding equipment according to Embodiment 2 of this utility model;

[0023] Figure 4 This is a schematic diagram of the spot welding mechanism in Embodiment 2 of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the first fixing unit in Embodiment 2 of this utility model;

[0025] Figure 6 This is a schematic diagram of the dust removal hood in Embodiment 2 of this utility model;

[0026] Figure 7 This is a schematic diagram of the cleaning mechanism in Embodiment 2 of this utility model;

[0027] Figure 8 This is a schematic diagram of the battery positive electrode spot welding equipment according to Embodiment 3 of this utility model;

[0028] Figure 9 This is a schematic diagram of the weld joint detection mechanism in Embodiment 3 of this utility model;

[0029] Figure 10 This is a schematic diagram of the label writing mechanism in Embodiment 3 of this utility model;

[0030] Figure 11 This is a schematic diagram of the conveying mechanism in Embodiment 3 of this utility model;

[0031] Figure 12 This is a schematic diagram of the battery assembly in Embodiment 3 of this utility model.

[0032] Marked in the image:

[0033] 1. Conveying mechanism; 11. Fourth drive unit; 12. Linear guide rail; 13. Load-bearing fixture;

[0034] 2. Battery positive terminal positioning mechanism; 21. Visual positioning unit; 22. Sensor positioning unit;

[0035] 3. Spot welding mechanism; 31. Laser spot welding unit; 32. First drive unit; 33. Second drive unit;

[0036] 4. Battery positive terminal fixing mechanism; 41. First fixing unit; 411. Support assembly; 4111. Support platform; 4112. First driving component; 412. Pressing assembly; 4121. Pressing claw; 4122. Second driving component; 4123. Dust hood; 4124. Opening; 42. Second fixing unit;

[0037] 5. Cleaning mechanism; 51. Cleaning brush; 52. Third drive unit;

[0038] 6. Weld joint inspection mechanism; 7. Label writing mechanism; 8. Label reading mechanism;

[0039] 100. Fixture; 200. Battery. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] refer to Figures 1 to 2 The battery positive electrode spot welding equipment provided in this embodiment includes a conveying mechanism 1, and a battery positive electrode positioning mechanism 2 and a spot welding mechanism 3 arranged sequentially along the conveying direction of the conveying mechanism 1. The conveying mechanism 1 is used to convey battery components to be spot welded. The battery positive electrode positioning mechanism 2 and the spot welding mechanism 3 can be arranged on the same side or different sides of the conveying mechanism 1. It should be noted that multiple battery components are conveyed simultaneously on the conveying mechanism 1. When the conveying mechanism 1 conveys a battery component to the position of the spot welding mechanism 3, another battery component is also positioned at the corresponding position of the battery positive electrode positioning mechanism 2. Thus, the battery positive electrode positioning mechanism 2 and the spot welding mechanism 3 can operate synchronously, effectively improving production efficiency.

[0044] The battery positive electrode positioning mechanism 2 includes a visual positioning unit 21 and a sensing positioning unit 22 disposed above the conveying mechanism 1. The visual positioning unit 21 and the sensing positioning unit 22 are arranged sequentially along the conveying direction of the conveying mechanism 1. The visual positioning unit 21 is used to acquire the position information of the battery positive electrode in the horizontal direction and transmit it to the spot welding mechanism 3. The sensing positioning unit 22 is used to acquire the position information of the battery positive electrode in the vertical direction and transmit it to the spot welding mechanism 3.

[0045] Understandably, during the conveying process of the conveying mechanism 1, the battery assembly first arrives below the visual positioning unit 21. The visual positioning unit 21 captures the position parameters of the positive battery electrode in the X and Y directions through visual imaging and transmits them to the spot welding mechanism 3. Then, the conveying mechanism 1 continues to convey the battery assembly to the area below the sensing positioning unit 22. The sensing positioning unit 22 measures the vertical height of the positive battery electrode through position sensing, thereby obtaining the position parameters of the positive battery electrode in the Z direction and transmitting them to the spot welding mechanism 3. The spot welding mechanism 3 obtains the position parameters of the positive battery electrode in the X, Y, and Z directions. Finally, the conveying mechanism 1 continues to convey the battery assembly to the position of the spot welding mechanism 3. The spot welding mechanism 3 performs precise spot welding on the positive battery electrode based on the obtained position information of the positive battery electrode, thereby improving the welding accuracy of the positive battery electrode and effectively improving the welding quality and product quality.

[0046] In one implementation, the visual positioning unit 21 includes a CCD camera, which can capture the position parameters of the positive battery electrode in the X and Y directions by taking pictures of the positive battery electrode; the sensing positioning unit 22 includes a displacement sensor, which can sense and measure the distance between the positive battery electrode and the displacement sensor by emitting light towards the positive battery electrode, thereby calculating the height parameter of the positive battery electrode and thus obtaining the position parameter of the positive battery electrode in the Z direction.

[0047] In some implementations, a supplementary light source can be provided below the CCD camera to improve the image sharpness of the CCD camera, thereby improving the visual capture efficiency of the CCD camera. Both the CCD camera and the displacement sensor can be connected to a position adjustment component, allowing the positions of the CCD camera and the displacement sensor to be adjusted according to different production needs, thus improving applicability.

[0048] The battery positive electrode spot welding equipment in this embodiment acquires the horizontal position information of the battery positive electrode by setting a visual positioning unit and the vertical position information of the battery positive electrode by setting a sensor positioning unit. Through the cooperation of the visual positioning unit and the sensor positioning unit, the position parameters of the battery positive electrode in the X, Y and Z directions can be accurately obtained. This enables the spot welding mechanism to accurately acquire the position information of the battery positive electrode and perform precise spot welding operations on the target welding position. As a result, the welding accuracy of the battery positive electrode can be effectively improved, thereby improving the welding quality and the quality of the battery product.

[0049] Example 2

[0050] As a further optimization of Example 1, refer to Figures 3 to 7 The battery positive electrode spot welding equipment also includes a battery positive electrode fixing mechanism 4. The spot welding mechanism 3 and the battery positive electrode fixing mechanism 4 are respectively located on opposite sides of the conveying mechanism 1. The battery positive electrode fixing mechanism 4 is used to fix the battery positive electrode during spot welding to improve the stability of the spot welding operation and the welding quality.

[0051] The battery positive electrode fixing mechanism 4 includes a first fixing unit 41 and a second fixing unit 42 arranged sequentially along the conveying direction of the conveying mechanism 1. The first fixing unit 41 and the second fixing unit 42 are respectively used to fix the positive electrodes of two adjacent battery components on the conveying mechanism 1. The spot welding mechanism 3 includes a laser spot welding unit 31, a first driving unit 32 and a second driving unit 33. Both the first driving unit 32 and the second driving unit 33 can be driving modules. The first driving unit 32 is used to drive the laser spot welding unit 31 to move vertically to adjust the height distance between the laser spot welding unit 31 and the battery positive electrode. The second driving unit 33 is used to drive the laser spot welding unit 31 and the first driving unit 32 to move horizontally, so that the laser spot welding unit 31 can operate between the first fixing unit 41 and the second fixing unit 42.

[0052] It should be noted that during spot welding, the laser spot welding unit 31 first performs spot welding on the positive electrode of the battery fixed by the first fixing unit 41, and then moves to the position of the second fixing unit 42 to perform spot welding on the positive electrode of the battery fixed by the second fixing unit 42. After completing the spot welding, the laser spot welding unit 31 will stay at the position of the second fixing unit 42. In the next round of spot welding, the laser spot welding unit 31 first performs spot welding on the positive electrode of the battery fixed by the second fixing unit 42, and then performs spot welding on the positive electrode of the battery fixed by the first fixing unit 41, and so on. This reduces the number of times the laser spot welding unit 31 moves, which helps to reduce energy consumption, lower production costs, and improve spot welding efficiency. Since laser spot welding is relatively expensive, by setting up a laser spot welding unit 31 in conjunction with the first fixing unit 41 and the second fixing unit 42, welding efficiency can be improved, production costs can be controlled, and production efficiency can be improved.

[0053] The first fixing unit 41 includes a support assembly 411 and a pressing assembly 412 disposed above the support assembly 411. The support assembly 411 includes a support platform 4111 and a first driving member 4112 for driving the support platform 4111 to move vertically. The pressing assembly 412 includes a pressing claw 4121 and a second driving member 4122 for driving the pressing claw 4121 to move vertically. Both the first driving member 4112 and the second driving member 4122 can be a drive motor or a drive cylinder.

[0054] When the battery assembly is conveyed to the position of the first fixing unit 41 by the conveying mechanism 1, the support platform 4111 moves upward under the drive of the first driving member 4112 and abuts against the bottom of the positive terminal of the battery. Then, the pressure claw 4121 moves downward under the drive of the second driving member 4122 and presses against the positive terminal of the battery. After that, the laser spot welding unit 31 performs spot welding on the positive terminal of the battery. In some embodiments, spot welding avoidance holes can be opened at the end of the pressure claw 4121. When the pressure claw 4121 presses against the positive terminal of the battery, the spot welding avoidance hole is exactly aligned with the target spot welding position of the positive terminal of the battery. The laser spot welding unit 31 can directly align with the spot welding avoidance hole to perform spot welding operations. This can further improve the accuracy of spot welding operations and improve the stability of the pressure claw 4121 pressing and fixing process.

[0055] In some embodiments, the pressing assembly 412 may be connected to an electric slide table, which can be used to adjust the horizontal position of the pressing assembly 412 to eliminate the relative positional deviation between the battery assembly and the pressing claw 4121, ensuring that the pressing claw 4121 can accurately align with the positive terminal of the battery for pressing and fixing. Furthermore, a sensor may be provided on one side of the support assembly 411 to detect the arrival of the battery assembly. When the sensor detects that a battery assembly has been delivered into position, it will instruct the support assembly 411 and the pressing assembly 412 to begin operation.

[0056] As a further optimization, the driving end of the second driving component 4122 is also connected to a dust removal hood 4123. The dust removal hood 4123 has an opening 4124 on the side near the conveying mechanism 1. The pressure claw 4121 is located inside the dust removal hood 4123, and the end of the pressure claw 4121 extends out of the dust removal hood 4123 through the opening 4124. During the spot welding operation, the dust removal hood 4123 can continuously remove welding shavings or dust from the positive electrode, preventing welding dust from flying and polluting the production environment. At the same time, it can improve the surface cleanliness of the battery positive electrode, further improving the welding quality.

[0057] In some embodiments, a cleaning mechanism 5 for cleaning the pressure claw 4121 is provided on one side of the first fixing unit 41. The cleaning mechanism 5 includes a cleaning brush 51 and a third driving unit 52 for driving the cleaning brush 51 closer to or away from the pressure claw 4121. In this embodiment, the third driving unit 52 includes a vertical driving cylinder and a horizontal driving cylinder. The driving end of the horizontal driving cylinder is connected to the cleaning brush 51, and the driving end of the vertical driving cylinder is connected to the fixed end of the horizontal driving cylinder. The brushing cleaning of the cleaning brush 51 is achieved by driving the horizontal driving cylinder.

[0058] In this embodiment, the structure of the second fixing unit 42 is the same as that of the first fixing unit 41, and a cleaning mechanism 5 can also be provided on one side of the second fixing unit 42, which will not be described in detail here.

[0059] Example 3

[0060] As a further optimization of Example 1, refer to Figures 8 to 12 The battery positive electrode spot welding equipment also includes a weld joint detection mechanism 6. The battery positive electrode positioning mechanism 2, the spot welding mechanism 3, and the weld joint detection mechanism 6 are arranged sequentially along the conveying direction of the conveying mechanism 1. The weld joint detection mechanism 6 includes a CCD detection camera and a supplementary light source located below the CCD detection camera. The CCD detection camera and the supplementary light source are located above the conveying mechanism 1. The CCD detection camera and the supplementary light source can also be connected to a position adjustment component to adjust their positions to adapt to different production needs.

[0061] In some embodiments, a tag writing mechanism 7 is provided above the conveying mechanism 1, corresponding to the position of the battery positive electrode positioning mechanism 2, for writing the battery positive electrode position information obtained by the battery positive electrode positioning mechanism 2 into an identification tag on the battery assembly. A tag reading mechanism 8 is provided above the conveying mechanism 1, corresponding to the position of the spot welding mechanism 3, for reading the identification tag on the battery assembly to obtain the position information of the battery positive electrode. In the battery positive electrode positioning mechanism 2, two tag writing mechanisms 7 can be provided, corresponding to the positions of the visual positioning unit 21 and the sensing positioning unit 22, respectively. In the spot welding mechanism 3, two tag reading mechanisms 8 can be provided, corresponding to the positions of the first fixing unit 41 and the second fixing unit 42, respectively.

[0062] In some embodiments, a tag writing mechanism 7 may also be provided above the conveying mechanism 1 at a position corresponding to the solder joint detection mechanism 6, for writing the detection results of the solder joint detection mechanism 6 into an identification tag on the battery assembly. In this embodiment, an RFID tag is affixed to the battery assembly, and both the tag writing mechanism 7 and the tag reading mechanism 8 may include RFID readers.

[0063] In this embodiment, the conveying mechanism 1 includes a fourth drive unit 11, a linear guide rail 12, and multiple support fixtures 13 slidably connected to the linear guide rail 12. Each support fixture 13 holds and fixes a battery assembly. The fourth drive unit 11 is used to drive the support fixture 13 to move along the linear guide rail 12. The fourth drive unit 11 can be a drive motor. In this embodiment, the battery assembly includes a clamp 100 and a battery 200 clamped and fixed on the clamp 100. The head of the battery 200 protrudes outside the clamp 100. The support fixtures 13 are mainly used to place and fix the body of the clamp 100.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0066] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A battery positive electrode spot welding apparatus characterized by comprising: It includes a conveying mechanism (1), and a battery positive electrode positioning mechanism (2) and a spot welding mechanism (3) arranged sequentially along the conveying direction of the conveying mechanism (1). The battery positive electrode positioning mechanism (2) includes a visual positioning unit (21) and a sensor positioning unit (22) disposed above the conveying mechanism (1). The visual positioning unit (21) is used to acquire the position information of the battery positive electrode in the horizontal direction and transmit it to the spot welding mechanism (3). The sensor positioning unit (22) is used to acquire the position information of the battery positive electrode in the vertical direction and transmit it to the spot welding mechanism (3).

2. The battery positive spot welding apparatus according to claim 1, characterized by, The visual positioning unit (21) includes a CCD camera, and the sensing positioning unit (22) includes a displacement sensor.

3. The battery positive spot welding apparatus according to claim 1, characterized by, It also includes a battery positive electrode fixing mechanism (4), wherein the spot welding mechanism (3) and the battery positive electrode fixing mechanism (4) are respectively located on opposite sides of the conveying mechanism (1).

4. The battery positive spot welding apparatus according to claim 3, characterized by, The battery positive electrode fixing mechanism (4) includes a first fixing unit (41) and a second fixing unit (42) arranged sequentially along the conveying direction of the conveying mechanism (1). The spot welding mechanism (3) includes a laser spot welding unit (31), a first driving unit (32) and a second driving unit (33). The first driving unit (32) is used to drive the laser spot welding unit (31) to move in the vertical direction, and the second driving unit (33) is used to drive the laser spot welding unit (31) and the first driving unit (32) to move in the horizontal direction. The laser spot welding unit (31) operates between the first fixed unit (41) and the second fixed unit (42).

5. The battery positive spot welding apparatus according to claim 4, characterized by, The first fixing unit (41) includes a support assembly (411) and a pressing assembly (412) disposed above the support assembly (411). The support assembly (411) includes a support platform (4111) and a first driving member (4112) for driving the support platform (4111) to move in the vertical direction. The pressing assembly (412) includes a pressing claw (4121) and a second driving member (4122) for driving the pressing claw (4121) to move in the vertical direction.

6. The battery positive spot welding apparatus according to claim 5, characterized by, The driving end of the second driving member (4122) is also connected to a dust cover (4123). The dust cover (4123) has an opening (4124) on the side near the conveying mechanism (1). The pressure claw (4121) is located inside the dust cover (4123) and the end of the pressure claw (4121) extends out of the dust cover (4123) through the opening (4124).

7. The battery positive electrode spot welding equipment according to claim 5, characterized in that, A cleaning mechanism (5) for cleaning the pressure claw (4121) is provided on one side of the first fixing unit (41). The cleaning mechanism (5) includes a cleaning brush (51) and a third driving unit (52) for driving the cleaning brush (51) to move closer to or away from the pressure claw (4121).

8. The battery positive electrode spot welding equipment according to claim 1, characterized in that, It also includes a solder joint detection mechanism (6), wherein the battery positive electrode positioning mechanism (2), the spot welding mechanism (3) and the solder joint detection mechanism (6) are arranged sequentially along the conveying direction of the conveying mechanism (1).

9. The battery positive electrode spot welding equipment according to claim 1, characterized in that, A tag writing mechanism (7) is provided above the conveying mechanism (1) at a position corresponding to the battery positive electrode positioning mechanism (2), and a tag reading mechanism (8) is provided above the conveying mechanism (1) at a position corresponding to the spot welding mechanism (3).

10. The battery positive electrode spot welding equipment according to claim 1, characterized in that, The conveying mechanism (1) includes a fourth drive unit (11), a linear guide rail (12), and a plurality of bearing fixtures (13) slidably connected to the linear guide rail (12). The fourth drive unit (11) is used to drive the bearing fixtures (13) to move along the linear guide rail (12).