CN220612714U - Battery cell assembling machine - Google Patents

Abstract

The utility model relates to a battery cell assembling machine. The battery cell assembling machine comprises a feeding inductor, a first transmission mechanism and a welding mechanism; the feeding inductor is used for identifying the type of the battery cell to be assembled; the first transmission mechanism is used for selecting and conveying the thermal fuse matched with the battery cell to be assembled according to the type of the battery cell; the welding mechanism is used for welding the lug of the battery cell to be assembled and the thermal fuse. The battery cell assembling machine is provided with the feeding inductor, so that the assembling and welding process of the lugs of the battery cells and the thermal fuse can be carried out on different types of battery cells. When assembling and welding processes are carried out on different types of battery cores and the thermal fuse, firstly, the type of the battery core input by a battery core feeding mechanism is identified through a feeding inductor; according to the type of the battery cell, the first transmission mechanism selects a thermal fuse matched with the battery cell; the battery core and the thermal fuse are welded and fixed together by a welding mechanism.

Description

Battery cell assembling machine

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to a battery cell assembly machine.

Background

The safety of battery cells during use is one of the most important properties of batteries, and particularly for a combined cell formed by combining more than two cells, the safety of the combined cell is particularly required to be concerned and emphasized. In the production and manufacturing process of battery cells, in order to ensure the use safety, a TCO device (generally called a thermal fuse, a thermal cut-off or a temperature fuse) is welded at the tab end of the cell.

The utility model patent No. ZL 201921912132.6 discloses a TCO material loading welding equipment, and it includes the frame, is equipped with the rolling disc on the frame, is equipped with the rotatory motor of drive rolling disc below the rolling disc, and the rolling disc side is provided with TCO loading attachment, electric core loading attachment and welding set, TCO loading attachment and electric core loading attachment transport the rolling disc with TCO and electric core respectively, welding set with transport TCO and electric core tab welding together on the rolling disc, TCO loading attachment including flying to the material loading machine, TCO get material subassembly, TCO locating component and TCO feeding component. According to the TCO feeding and welding equipment, TCO feeding, cell feeding and welding of TCO and cell lugs can be achieved in an automatic mode.

However, for the existing products including the TCO feeding and welding equipment, when welding the tabs of different cells with the TCO device, different feeding and welding equipment needs to be configured, and welding of the tabs of different types of cells with the TCO device cannot be realized on one feeding and welding equipment.

Specifically, for the combined cell, the combined cell comprises a cell semi-finished product A and a cell semi-finished product B, wherein when the TCO device is connected, the left tab of the cell semi-finished product A is connected with the TCO device, and the right tab of the cell semi-finished product B is connected with the TCO device. Although both connected TCO devices include two nickel plates and a fuse formed between the two nickel plates, the structural configuration is substantially uniform. However, due to the different positions of the tabs connected with the TCO devices, the TCO devices adapted to the cell semi-finished product a and the cell semi-finished product B have mirror image relationships, but not the same relationships, which results in that the TCO devices connected with the cell semi-finished product a and the cell semi-finished product B are not universal, and the welding and assembling processes are inconsistent. Based on this, in the prior art, the connection of the cell semi-finished product a and the TCO device, and the connection of the cell semi-finished product B and the TCO device, require different production lines, which cannot be shared by the two.

Disclosure of Invention

The utility model provides a battery cell assembling machine, which is used for solving the technical problem that in the prior art, when assembling and welding a battery cell and a thermal fuse, different production lines are required to be used for assembling and welding different types of battery cells.

The utility model provides a battery cell assembling machine which comprises a feeding inductor, a first transmission mechanism and a welding mechanism, wherein the feeding inductor is arranged on the first transmission mechanism; the feeding inductor is used for identifying the type of the battery cell to be assembled; the first transmission mechanism is used for selecting and conveying the thermal fuse matched with the battery cell to be assembled according to the type of the battery cell; the welding mechanism is used for welding the lug of the battery cell to be assembled and the thermal fuse.

The battery cell assembling machine further comprises a battery cell feeding mechanism, a thermal fuse storage area and a welding area; the battery cell feeding mechanism is used for inputting a battery cell to be assembled; the thermal fuse storage area stores a plurality of different thermal fuses; the first transmission mechanism selects a thermal fuse matched with the battery core in the thermal fuse storage area and transmits the thermal fuse to the welding area; the welding mechanism is arranged at the welding area, and the electrode lug of the battery cell transmitted to the welding area and the thermal fuse matched with the electrode lug are welded together at the welding area.

Wherein, the feeding sensor is a color code sensor.

The battery cell assembling machine further comprises a second transmission mechanism, wherein the second transmission mechanism is used for transmitting the input battery cells to the welding area.

The welding area is provided with a turntable mechanism, a plurality of stop positions are arranged on the periphery of the turntable mechanism, and a plurality of battery core storage areas respectively corresponding to the stop positions are arranged on the turntable mechanism; and the turntable mechanism stops rotating when each battery cell storage area rotates to a stop position corresponding to the battery cell storage area.

The plurality of stop positions comprise a first stop position, a second stop position and a third stop position, the welding mechanism is arranged at the first stop position, the second stop position is a target position for conveying the battery cell to the welding area, and the third stop position is a target position for conveying the thermal fuse to the welding area.

Wherein the plurality of stop bits further comprises a fourth stop bit, and a first image detection mechanism is arranged at the fourth stop bit; the fourth stop is disposed before the first stop and after the second and third stops in the rotational direction of the turntable mechanism.

Wherein, each stop position is arranged at equal angle intervals in the circumferential direction of rotation of the turntable mechanism.

The battery cell assembly machine further comprises a first shaping mechanism and/or a second shaping mechanism; the battery cell is transmitted to the first shaping mechanism before being transmitted to the welding area, and the first shaping mechanism shapes the lug of the battery cell before welding; and the battery cell is transmitted to the second shaping mechanism after welding, and the second shaping mechanism shapes the lug of the welded battery cell.

The battery cell assembling machine further comprises a second image detection mechanism, wherein the second image detection mechanism is used for collecting images of the lugs of the battery cells after being shaped by the first shaping mechanism and determining the flatness of the lugs of the battery cells according to the images.

The battery cell assembling machine further comprises a welding detection mechanism, wherein the welding detection mechanism is used for detecting whether welding spots are poor or not between the lugs of the battery cells and the thermal fuse.

The thermal fuse comprises a first connecting layer, a second connecting layer and a fusing layer positioned between the first connecting layer and the second connecting layer; the first connecting layer is used for being connected with the electrode lug of the battery cell, and the second connecting layer is a region to be connected; the battery cell assembly machine further comprises a thickness detection mechanism, wherein the thickness detection mechanism is used for detecting the thickness of the second connecting layer of the thermal fuse welded on the tab of the battery cell, and judging that the battery cell assembly machine is bad when the detected thickness exceeds a set value.

Compared with the prior art, the battery cell assembling machine provided by the utility model has the following advantages:

according to the battery cell assembling machine, as the feeding inductor is arranged, assembling and welding processes of the lugs of the battery cells and the thermal fuse can be performed on different types of battery cells. Specifically, when assembling and welding processes are carried out on different types of battery cells and the thermal fuse, firstly, the type of the battery cell input by a battery cell feeding mechanism is identified through a feeding inductor; meanwhile, according to the type of the battery cell, the first transmission mechanism selects a thermal fuse matched with the battery cell; and the lug of the battery core and the thermal fuse are welded and fixed together by a welding mechanism, so that the lug of the battery core of the corresponding type is connected and fixed with the corresponding thermal fuse.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a battery cell feeding mechanism and a feeding sensor of a battery cell assembling machine according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a second transmission mechanism of the battery cell assembling machine according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a shaping and positioning station of the battery cell assembling machine according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a first shaping mechanism of the battery cell assembling machine according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a welding area of a battery cell assembly machine according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a first conveying mechanism and a thermal fuse storage area of the battery cell assembling machine according to the embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a first image detection mechanism of a battery cell assembling machine according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a welding mechanism of a battery cell assembling machine according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of a third transmission mechanism and a fourth transmission assembly of the battery cell assembling machine according to the embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a second shaping mechanism of the battery cell assembling machine according to the embodiment of the utility model;

fig. 11 is a schematic structural diagram of a welding detection mechanism of a battery cell assembling machine according to an embodiment of the present utility model;

fig. 12 is a schematic structural diagram of a thickness detection mechanism of a battery cell assembling machine according to an embodiment of the present utility model;

fig. 13 is a schematic structural diagram of a defective product discharging mechanism of the battery cell assembling machine according to an embodiment of the present utility model;

fig. 14 is a schematic structural diagram of a battery cell assembling machine according to an embodiment of the utility model;

fig. 15 is a schematic diagram of a second embodiment of a battery cell assembling machine;

fig. 16 is a schematic diagram of a battery cell assembling machine according to an embodiment of the utility model.

In the figure:

1-an electric core feeding mechanism; 101-a guiding mechanism; 102-a stop;

2-a feed inductor; 201-a bracket;

3-a first transmission mechanism;

4-a second transmission mechanism;

a 5-weld zone; 5A-a first stop position; 5B-a second stop position; 5C-a third stop position; 5D-fourth stop bit; 501-a turntable mechanism; 501a, 501b, 501c, 501 d-cell storage areas; 502-a welding mechanism;

6-a first shaping mechanism;

7, a code scanning mechanism;

8-a second shaping mechanism;

9-a first image detection mechanism;

11-a welding detection mechanism;

12-a thickness detection mechanism;

13-a third transfer mechanism;

14-a fourth transmission assembly;

15-a defective product discharging mechanism;

DX-cell; TCO-thermal fuse.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiments of the battery cell assembling machine provided by the utility model are described below with reference to the accompanying drawings.

In one embodiment of the cell assembly machine of the present utility model, as shown in fig. 14-16, the cell assembly machine includes a feed inductor 2, a first transfer mechanism 3, and a welding mechanism 502; the feeding inductor 2 is used for identifying the cell type of the cell DX to be assembled; the first transmission mechanism 3 is used for selecting and conveying a thermal fuse TCO matched with the electric core DX to be assembled according to the type of the electric core DX; the welding mechanism 502 is used for welding the tab of the cell DX to be assembled with the thermal fuse TCO.

In addition, the battery cell assembly machine also comprises a battery cell feeding mechanism 1, a thermal fuse storage area and a welding area 5; the cell feeding mechanism 1 is used for inputting a cell DX to be assembled; the feeding inductor 2 is arranged at the cell feeding mechanism 1 so that the feeding inductor 2 can identify the type of the input cell DX; the thermal fuse storage area stores a plurality of different thermal fuses; the first transmission mechanism 3 selects a thermal fuse TCO matched with the battery cell DX in the thermal fuse storage area and transmits the TCO to the welding area 5; the soldering mechanism 502 is disposed in the soldering zone 5, and the tab of the cell DX transferred to the soldering zone 5 and the thermal fuse TCO matched therewith are soldered together in the soldering zone 5.

In this embodiment, as shown in fig. 1, the cell feeding mechanism 1 comprises, for example, a conveyor belt, which can transport the cells DX to a subsequent station after the cells DX are placed on the conveyor belt. The conveyor belt may be provided with a guide mechanism 101, and the guide mechanism 101 may be in a strip shape extending in the conveying direction of the conveyor belt. During the process that the battery cell DX is conveyed on the conveyor belt, the guide mechanism 101 plays a role in guiding the battery cell DX; and, it may also assist in positioning the battery cells DX, so as to help maintain the plurality of battery cells DX transported on the conveyor belt in substantially the same posture, for example, in a state in which one side (the side adjacent to the guide mechanism 101) of the plurality of battery cells DX is substantially parallel to the longitudinal direction of the elongated guide mechanism 101 when the plurality of battery cells DX are placed on the conveyor belt. A stop 102 may also be provided at the end of the conveyor, the stop 102 being used to stop the cells DX moving to the end of the conveyor. The cell DX stopped to stop the movement helps to be identified by the feeding sensor 2, and the cell DX in the stopped state is also convenient to be carried and moved to the subsequent other stations.

With continued reference to fig. 1, a feed sensor 2 is provided at the cell feed mechanism 1, and may specifically be on one side of the conveyor belt. The type of the cell DX identified by the feeding sensor 2 is mainly divided according to the lugs of the cell DX connected with the thermal fuse TCO; generally, the cell DX has two tabs, which are called a left tab and a right tab in this embodiment; according to the division standard, the cell DX connected with the thermal fuse TCO is one type, and the cell DX connected with the thermal fuse TCO is the other type. Naturally, under this division criterion, it is also possible to further subdivide, for example, the cell DX to which the left tab is connected to the thermal fuse TCO, into different sub-types, depending on its size and shape.

The cells DX are divided into different types and identified by the feed sensor 2, the purpose of which is to select in a subsequent process a thermal fuse TCO that matches the cell DX to be assembled. As described in the background section, the thermal fuse TCO to be connected to the left tab of the cell DX is different from the thermal fuse TCO to be connected to the right tab of the cell DX, and there are some differences in the subsequent welding and assembling process. After the type of the cell DX to be assembled has been determined by the induction identification of the feed inductor 2, a matching thermal fuse TCO can be selected in a subsequent process and the tabs of the cell DX and the thermal fuse TCO are welded together in a corresponding manner and process.

Specifically, the feeding sensor 2 may be fixedly mounted to the stand 201, and the feeding sensor 2 may be a color scale sensor. The color code sensor can detect various labels, can detect spots and the like on specific color codes or objects, can detect the color by comparing with non-color code areas, can detect even the color with slight difference of background color, has the advantages of high processing speed, capability of detecting the small difference of gray values, no influence of mixed colors of the labels and the background, and the like. In general, the color scale sensor can well detect the cell DX and identify the type thereof.

The feeding sensor 2 may be specifically disposed at the end of the cell feeding mechanism 1, and as described above, the stop 102 is disposed at the end of the driving belt, that is, the position of the feeding sensor 2 corresponds to the position of the stop 102. Thus, when the feeding inductor 2 identifies the type of the cell DX, the stop block 102 stops the cell DX, and the cell DX is in a stop state, and in this state, the accuracy of identifying the cell DX by the feeding inductor 2 is higher.

After cell DX has been identified by feed sensor 2 as being of the type, cell DX is moved to bond pad 5 (and to other stations for corresponding pre-processing before being moved to bond pad 5, as will be described in more detail below).

At the same time, the thermal fuse TCO matched to the cell DX is determined, and the first transfer mechanism 3 can select the thermal fuse TCO matched to the cell DX in the thermal fuse storage area, and as shown in fig. 6, the thermal fuse TCO is carried and moved to the welding area 5. The thermal fuse TCO which is carried and moved to the welding area 5 and the battery cell DX are aligned and positioned according to the set position relation and fixed. The soldering mechanism 502 then solder the tabs of the cell DX with the thermal fuse TCO.

Specifically, after the specific type of the battery cell DX is identified and determined by the feeding sensor 2, the battery cell DX is carried from the conveyor belt, and firstly, the battery cell DX can be carried and moved to a station, and a first shaping mechanism 6 is arranged at the station, as shown in fig. 3 and 4, the first shaping mechanism 6 is used for shaping the tab of the battery cell DX before welding, so that the tab of the battery cell DX is leveled, and when the tab of the battery cell DX is assembled and welded with the thermal fuse TCO subsequently, the tab of the battery cell DX and the thermal fuse TCO can be fully contacted in a welding area, thereby ensuring good welding effect. Accurate positioning of cell DX can also be performed at this station, which helps to make cell DX accurate in the location of the weld zone with less or no offset when cell DX is subsequently handled to the weld zone. Thus, this station may be referred to as a shaping & positioning station.

The shaping and positioning station can be further provided with a code scanning mechanism 7, as shown in fig. 3, the code scanning mechanism 7 can scan bar codes such as bar codes and two-dimensional codes on the electric core DX, the number, the type, the model and the process position of the electric core DX can be identified through code scanning, and the information identified through code scanning is transmitted, summarized and processed, so that automation and effective process control of assembly welding of the electric core DX and the thermal fuse TCO can be realized.

After the shaping and positioning stations finish shaping the lugs of the battery cell DX, the flatness of the lugs of the battery cell DX after shaping can be detected before the battery cell DX is continuously carried and moved. In order to achieve the detection, the cell assembly machine may further include a second image detection mechanism, where the second image detection mechanism is configured to collect an image of the tab of the cell DX shaped by the first shaping mechanism 6, and determine the flatness of the tab of the cell DX according to the image. Detecting the flatness of the electrode lug of the battery cell DX after shaping through the second image detection mechanism, and if the detection result shows that the flatness of the electrode lug of the battery cell DX after shaping does not meet the requirement, controlling the first shaping mechanism 6 to reshape the electrode lug of the battery cell DX or sending a signal to a worker, and performing manual intervention by the worker; therefore, the flatness of the lug of the battery cell DX moving from the shaping and positioning station to the subsequent station can be ensured to meet the requirements, and better assembly and welding effects can be obtained.

The cell assembly machine further comprises a second transfer mechanism 4, said second transfer mechanism 4 being adapted to transfer the inputted cells DX towards the welding zone 5. Specifically, after the cell DX is finished in the shaping & positioning station, the cell DX needs to be carried and moved to the welding zone 5, and the second conveying mechanism 4 shown in fig. 2 is used when the cell DX is carried. The second transmission mechanism 4 can comprise a motor, an air cylinder, a sucker and other structures, and the grabbing of the cell DX and the moving among different stations are realized through the mutual matching of the structures. The drive mechanism used in moving the cells DX from the conveyor transport to the shaping & positioning station may be of a similar construction to the second transfer mechanism 4 shown in fig. 2.

As shown in fig. 5, the welding area 5 is provided with a turntable mechanism 501, a plurality of stopping positions are arranged on the periphery of the turntable mechanism 501, and at least one battery cell storage area is arranged on the turntable mechanism 501; the turntable mechanism 501 stops rotating when the cell storage area rotates to the and stop position.

The stop position provided on the peripheral side of the turntable mechanism 501 has different functions and purposes. For example, to place the cell DX in the cell storage area on the turntable mechanism 501 located in the welding area 5 by the second transmission mechanism 4, a stop position needs to be set; and a stop position is also required to be set for the welding mechanism 502 to weld the tab of the cell DX and the thermal fuse TCO. When the battery cell storage areas stop at different stop positions, corresponding functions can be realized.

Specifically, the plurality of stop positions includes a first stop position 5A, a second stop position 5B, and a third stop position 5C, where the welding mechanism 502 is disposed at the first stop position 5A, the second stop position 5B is a target position for conveying the electric core DX to the welding area 5, and the third stop position 5C is a target position for conveying the thermal fuse TCO to the welding area 5.

When one of the cell storage areas, such as cell storage area 501a, on carousel mechanism 501 stops to second stop position 5B, second transport mechanism 4 may place its grasped cell DX at cell storage area 501 a; then, when the cell storage area 501a is stopped at the third stop position 5C, the first conveying mechanism 3 can place the thermal fuse TCO grasped from the thermal fuse storage area at the cell storage area 501, and when the thermal fuse TCO is placed, the thermal fuse TCO and the previously placed cell DX are aligned according to a predetermined positional relationship; then, when the cell storage area 501a is stopped at the first stop position 5A, as shown in fig. 5 and 8, the welding mechanism 502 disposed at the first stop position 5A may weld the aligned cell DX and the thermal fuse TCO that have been placed and positioned on the cell storage area 501a, so that the two are fixedly connected.

In a further embodiment, the plurality of stop bits further comprises a fourth stop bit 5D, the fourth stop bit 5D being provided with a first image detection mechanism 9, as shown in fig. 7. The fourth stop position 5D is provided before the first stop position 5A and after the second and third stop positions 5B and 5C in the rotation direction of the dial mechanism 501. The first image detection mechanism 9 can collect the image of the battery cell storage area at the fourth stop position 5D, and determine whether the relative position relationship between the battery cell DX placed on the battery cell storage area and the thermal fuse TCO is accurate or not through image processing and information identification, and whether the two are accurately positioned and aligned.

In this embodiment, when one cell storage area on the turntable mechanism 501, such as the above-described cell storage area 501a, is stopped at the fourth stop position 5D after it is sequentially rotated past the second stop position 5B and the third stop position 5C, the first image detection mechanism 9 provided at the fourth stop position 5D can acquire an image at the cell storage area 501a in which the relative positional relationship between the cell DX and the thermal fuse TCO placed at the cell storage area 501a is acquired, and determine whether the relative positional relationship between the cell DX and the thermal fuse TCO is accurate, and whether the two are accurately positioned and aligned. If not aligned, a correction process is required to ensure that the relative positional relationship between the two is accurate when the cell storage region 501a continues to rotate and stops welding at the first stop position 5A, thereby making the final welding effect between the two good.

In one embodiment of the cell assembly machine, the stop positions are disposed at equal angular intervals in the circumferential direction of rotation of the turntable mechanism 501. Taking fig. 5 as an example, the first stop 5A, the second stop 5B, the third stop 5C, and the fourth stop 5D are disposed at intervals in the circumferential direction of the turntable mechanism 501, and the included angle between two adjacent stops is 90 degrees.

In this embodiment, based on the above-described structure, a plurality of cell storage areas may be provided on the turntable mechanism 501, the number of the provided cell storage areas being equal to the number of the plurality of stop positions, so that the plurality of cell storage areas on the turntable mechanism 501 can be aligned with the plurality of stop positions respectively at the same time, and the corresponding processes can be stopped at the plurality of stop positions respectively, that is, the assembly welding with the thermal fuse TCO can be performed on the plurality of cells DX simultaneously, in parallel, in stages, thereby contributing to the improvement of the efficiency of the assembly welding with the thermal fuse TCO and the cell DX.

For example, in the configuration shown in fig. 5, 4 cell storage areas, namely cell storage area 501a, cell storage area 501b, cell storage area 501c and cell storage area 501d, may be provided on the turntable mechanism 501. When the battery cell storage area 501B stops at the second stop position 5B to receive the battery cell DX, the battery cell storage area 501C stops at the third stop position 5C to receive the thermal fuse TCO, the battery cell storage area 501D stops at the fourth stop position 5D, the first image detection mechanism 9 collects images to judge whether the relative position relationship between the battery cell DX and the thermal fuse TCO is accurate, and the battery cell storage area 501a stops at the first stop position 5A to weld the tab of the battery cell DX and the thermal fuse TCO by the welding mechanism 502; it can be seen that, in the above process, the cell storage area 501a, the cell storage area 501B, the cell storage area 501C and the cell storage area 501D perform the different stages of the assembly welding process of the cell DX and the thermal fuse TCO in parallel at the first stop 5A, the second stop 5B, the third stop 5C and the fourth stop 5D, respectively, and the efficiency of the assembly welding is significantly higher. When the above processes are all completed, the turntable mechanism 501 rotates 90 degrees, and the cell storage area 501a, the cell storage area 501B, the cell storage area 501C and the cell storage area 501D rotate and stop at the second stop position 5B, the third stop position 5C, the fourth stop position 5D and the first stop position 5A respectively, so that the subsequent stage processes of the assembly welding process continue to be performed in parallel.

After the tab of the cell DX and the thermal fuse TCO are welded together by the welding mechanism 502, the cell DX is carried and moved from the welding zone 5 to a subsequent post-welding shaping station, at which a second shaping mechanism 8 is provided, as shown in fig. 10, said second shaping mechanism 8 shaping the tab of the welded cell DX. The second shaping mechanism 8 shapes the tab of the welded battery cell DX, so that the tab of the battery cell DX can be leveled, and when the tab of the battery cell DX is connected with other devices, such as a PCM (protection plate), the tab can be fully contacted with the other devices, and a good connection effect can be realized.

The third transfer mechanism 13 shown in fig. 9 may be used in carrying the cell DX from the welding zone 5 to the post-welding shaping station for shaping. Similar to the first and second transmission mechanisms 3 and 4, the third transmission mechanism 13 also comprises a motor, a cylinder, a sucker and other structures, and the grabbing of the battery cell DX and the moving between different stations are realized through the mutual matching of the structures.

In one embodiment of the cell assembly machine, the cell assembly machine further includes a welding detection mechanism 11, as shown in fig. 11, where the welding detection mechanism 11 is configured to detect whether there is a welding spot defect between the tab of the cell DX and the thermal fuse TCO.

In this embodiment, the welding detection mechanism 11 may be an image pickup device such as a CCD or the like. In addition, the number of the image acquisition devices can be multiple, and the images acquired by the image acquisition devices can be used for judging, so that whether welding spots are poor or not, such as explosion welding, cold welding, welding penetration and the like, between the lugs of the battery cell DX and the TCO of the thermal fuse can be more accurately and comprehensively determined.

In one embodiment of the cell assembly machine, the thermal fuse TCO comprises a first connection layer, a second connection layer and a fusing layer between the first connection layer and the second connection layer; the first connecting layer is used for being connected with the electrode lug of the cell DX, and the second connecting layer is a region to be connected and is used for being connected with the PCM and the like. The cell assembly machine further includes a thickness detection mechanism 12, as shown in fig. 12, where the thickness detection mechanism 12 is configured to detect a thickness of a second connection layer of the thermal fuse TCO welded on a tab of the cell DX, and determine that the thermal fuse TCO is bad when the detected thickness exceeds a set value. Specifically, the thickness detection mechanism 12 is, for example, a laser range finder.

For the thermal fuse TCO, the second connection layer is used as a region to be connected for connection with the PCM or the like, and if the thickness of the second connection layer is too large, the impedance of the second connection layer is too large, which affects the connection effect with the PCM or the like. In the process of assembling and welding the battery cell DX and the thermal fuse TCO, the second connection layer may be double-layered due to a grabbing error, so that the thickness of the second connection layer is obviously larger. In this embodiment, by detecting the thickness of the second connection layer by the thickness detection mechanism 12, it is possible to effectively identify whether a double layer or the like is present, and if a defective product with a large thickness is identified, it is conveyed to the defective product discharge mechanism 15 to be conveyed to a corresponding position for recovery for subsequent processing, as shown in fig. 13, so as to avoid the defective product from flowing out to the outside. For non-defective products, the battery cell DX assembled and welded with the thermal fuse TCO is transferred to other subsequent stations by another transfer mechanism such as a conveyor belt.

The detection of the welding detection mechanism 11 and the detection of the thickness detection mechanism 12 performed after welding and shaping can be performed at different stations, and when the battery DX is moved between the stations, the detection can be performed by using a fourth transmission assembly 14 shown in fig. 9, and the fourth transmission assembly 14 comprises a plurality of independent transmission mechanisms, and each transmission mechanism can grasp the battery DX and realize the movement of the battery DX between two adjacent stations.

In summary, in the above-mentioned embodiment of the present utility model, since the feeding inductor 2 is provided, the assembling and welding process of the tab of the cell DX and the thermal fuse TCO can be performed on different types of cells DX. Specifically, when assembling and welding processes are performed on different types of battery cells DX and thermal fuses TCO, firstly, the type of the battery cell DX input by the battery cell feeding mechanism 1 is identified through the feeding sensor 2; meanwhile, according to the type of the cell DX, the first transmission mechanism 3 selects a thermal fuse TCO matched with the cell DX; the battery cell DX and the thermal fuse TCO are welded and fixed together by the welding mechanism 502, so that the connection and fixation of the lugs of the battery cell DX of the corresponding type and the corresponding thermal fuse TCO are realized.

In addition, in the above embodiment of the present utility model, the process of assembling and welding the tab of the battery cell DX and the thermal fuse TCO can be basically and automatically implemented, and a great amount of manual operation is not required, as shown in fig. 16, the battery cell assembling machine of the above embodiment of the present utility model may be integrally placed in a basically sealed cabinet (the two ends of which are provided with the inlet and outlet of the material), and only needs to control through the input and output equipment outside the cabinet.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. The battery cell assembling machine is characterized by comprising a feeding sensor, a first transmission mechanism and a welding mechanism;

the feeding inductor is used for identifying the type of the battery cell to be assembled; the first transmission mechanism is used for selecting and conveying the thermal fuse matched with the battery cell to be assembled according to the type of the battery cell; the welding mechanism is used for welding the lug of the battery cell to be assembled and the thermal fuse.

2. The cell assembly machine of claim 1, further comprising a cell feed mechanism, a thermal fuse storage area, and a welding area;

the battery cell feeding mechanism is used for inputting a battery cell to be assembled;

the thermal fuse storage area stores a plurality of different thermal fuses; the first transmission mechanism selects a thermal fuse matched with the battery core in the thermal fuse storage area and transmits the thermal fuse to the welding area;

the welding mechanism is arranged at the welding area, and the electrode lug of the battery cell transmitted to the welding area and the thermal fuse matched with the electrode lug are welded together at the welding area.

3. The cell assembly machine of claim 1, wherein the feed sensor is a color scale sensor.

4. The cell assembly machine of claim 2, further comprising a second transfer mechanism for transferring the inputted cells toward the weld zone.

5. The battery cell assembling machine according to claim 2, wherein the welding area is provided with a turntable mechanism, a plurality of stop positions are arranged on the periphery of the turntable mechanism, and a plurality of battery cell storage areas respectively corresponding to the stop positions are arranged on the turntable mechanism; and the turntable mechanism stops rotating when each battery cell storage area rotates to a stop position corresponding to the battery cell storage area.

6. The cell assembly machine of claim 5, wherein the plurality of stop bits includes a first stop bit at which the welding mechanism is disposed, a second stop bit that is a target bit for the cell to be delivered to the welding zone, and a third stop bit that is a target bit for the thermal fuse to be delivered to the welding zone.

7. The cell assembly machine of claim 6, wherein the plurality of stop bits further comprises a fourth stop bit at which the first image detection mechanism is disposed;

the fourth stop is disposed before the first stop and after the second and third stops in the rotational direction of the turntable mechanism.

8. The cell assembly machine according to claim 6 or 7, wherein each of the stop positions is provided at equal angular intervals in a rotation circumferential direction of the turntable mechanism.

9. The cell assembly machine of claim 2, further comprising a first shaping mechanism and/or a second shaping mechanism;

the battery cell is transmitted to the first shaping mechanism before being transmitted to the welding area, and the first shaping mechanism shapes the lug of the battery cell before welding;

and the battery cell is transmitted to the second shaping mechanism after welding, and the second shaping mechanism shapes the lug of the welded battery cell.

10. The cell assembly machine of claim 9, further comprising a second image detection mechanism configured to capture an image of the tab of the cell after shaping by the first shaping mechanism and determine a flatness of the tab of the cell based on the image.

11. The battery cell assembly machine of claim 1, further comprising a welding detection mechanism for detecting whether there is a weld failure between the tab of the battery cell and the thermal fuse.

12. The cell assembly machine of claim 1, wherein the thermal fuse comprises a first connection layer, a second connection layer, and a fusing layer between the first connection layer and the second connection layer; the first connecting layer is used for being connected with the electrode lug of the battery cell, and the second connecting layer is a region to be connected;

the battery cell assembly machine further comprises a thickness detection mechanism, wherein the thickness detection mechanism is used for detecting the thickness of the second connecting layer of the thermal fuse welded on the tab of the battery cell, and judging that the battery cell assembly machine is bad when the detected thickness exceeds a set value.