CN216882445U - Carrier for tab welding - Google Patents

Abstract

The present invention discloses a carrier (100) for tab welding, which is provided with: the battery cell holding unit (102), the clamping device (200), and the holding device (300) for holding the contact state between the tab (704) of the battery cell (703) and the tab connection piece (702) of the top cover (701), wherein the clamping device (200) comprises: a first clamping jaw (201) and a second clamping jaw (202), wherein the first clamping jaw (201) and the second clamping jaw (202) are close to each other through a first elastic assembly (205); the holding device (300) comprises: a third jaw (301) and a fourth jaw (302), wherein the third elastic assembly (311) enables the third jaw (301) and the fourth jaw (302) to move towards the cell holding part (102). The first stop assembly (305) allows the movement of the third jaw (301) to be limited. A second stop assembly (306) causes movement of the fourth jaw (302) to be limited. Thus, the tab (704) and the tab connecting piece (702) can be maintained in a state of mutual contact without external power.

Description

Carrier for tab welding

Technical Field

The utility model relates to the field of power battery production equipment, in particular to a carrier for tab welding.

Background

As a structure of a battery, for example, an aluminum-case battery, constituting a power battery module for an electric vehicle, generally includes an aluminum case, a battery cell accommodated in the aluminum case, a top cover encapsulating the aluminum case, and the like. The top cover is provided with a pole post and the like which are connected with the pole lugs (positive and negative poles) of the battery cell in a welding mode.

When welding utmost point ear to utmost point post on the top cap and electric core, clamping electric core and top cap such as carrier need be used usually to the utmost point ear welds. Known tab welding carriers are generally installed in a single machine, and various clamping devices and the like on the carriers are driven by, for example, a cylinder, a motor and the like. However, the known tab welding carrier cannot be universally used for a new battery structure or new production equipment as a new structure of a battery is produced and a production line for producing a power battery is replaced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the problems associated with the prior art. Therefore, the utility model provides a carrier for welding a lug, which can keep the lug of a battery cell of a power battery and the lug connecting sheet of a top cover in a mutual contact state without external power.

The carrier for welding the tab is used for carrying and holding the battery core and the top cover of the power battery.

The carrier for welding the tab comprises:

a substrate, a first holding portion for holding a first battery cell and a first cap corresponding to the first battery cell is provided on one side of the substrate in a third direction, and the first holding portion includes: the battery comprises a battery cell holding part for holding the first battery cell, a clamping device for clamping the first top cover, and a holding device for holding the contact state of the lug of the first battery cell and the lug connecting piece of the first top cover.

Wherein the clamping device is provided on one side of the cell holding portion in the third direction, and has: a first jaw and a second jaw drivable to approach or separate from each other in a first direction orthogonal to the third direction. A first elastic member configured to apply a force to the first jaw and the second jaw so that the first jaw and the second jaw are close to each other in the first direction.

Wherein the holding device has: and the third clamping jaw is positioned on one side of the first direction of the battery cell holding part and can move along the first direction. And the fourth clamping jaw is positioned on the other side of the cell holding part in the first direction, is opposite to the third clamping jaw, and is movable along the first direction. And a third elastic member configured to apply a force to the third jaw and the fourth jaw so that the third jaw and the fourth jaw are moved in the first direction toward the cell holding portion, respectively. A first stop assembly configured to limit movement of the third jaw in the first direction toward the cell holder when the third jaw moves in the first direction toward an outside of the cell holder to a first preset position. A second stop assembly configured to limit movement of the fourth jaw in the first direction toward the cell holder when the fourth jaw moves in the first direction toward an outer side of the cell holder to a second predetermined position.

The carrier for welding the tab has the following beneficial effects: the tab of the battery cell of the power battery and the tab connecting sheet of the top cover can be kept in a mutual contact state without external power.

In some embodiments, the first retaining portion further comprises: a separator assembly provided on the other side of the cell holder in the third direction, the separator assembly being drivable in the third direction to project above the cell holder or to be separated therefrom.

In some embodiments, a second holding portion for holding a second battery cell and a second cap corresponding to the second battery cell is provided on the other side of the substrate in the third direction, and the second holding portion includes: another one of the cell holding portions, another one of the clamping devices, and another one of the holding devices; wherein the other of the clamping devices is provided on the other side of the other of the cell holding portions in the third direction; the third jaw and the fourth jaw of the other holding device are located on both sides of the other cell holding portion in the first direction, respectively.

In some embodiments, a second holding portion for holding a second battery cell and a second cap corresponding to the second battery cell is provided on the other side of the substrate in the third direction, and the second holding portion includes: another one of the cell holding portions, another one of the clamping devices, another one of the holding devices, and another one of the separator assemblies; wherein the other of the clamping devices is provided on the other side of the other of the cell holding portions in the third direction; the third clamping jaw and the fourth clamping jaw of the other holding device are respectively positioned on two sides of the other cell holding part in the first direction; the other separator assembly is disposed on one side of the other cell holding portion in the third direction.

In some embodiments, one of the diaphragm assemblies of the first holding portion and the other of the diaphragm assemblies of the second holding portion at least partially overlap in the up-down direction.

In some embodiments, the clamping device further comprises: the first driving piece is positioned between the first clamping jaw and the second clamping jaw and is in transmission connection with the first clamping jaw and the second clamping jaw respectively, and the first driving piece is driven to extend or retract along a second direction orthogonal to the first direction; the first driving piece is provided with a first guiding part which is formed to enable the first clamping jaw and the second clamping jaw to be far away from each other along the first direction when the first driving piece is driven to extend out, and is formed to allow the first clamping jaw and the second clamping jaw to be close to each other along the first direction when the first driving piece is driven to retract.

In some embodiments, further comprising: one end of the second driving piece is connected with the third clamping jaw, and the other end of the second driving piece extends towards the outer side of the substrate along the first direction; and one end of the third driving piece is connected with the fourth clamping jaw, and the other end of the third driving piece extends towards the outer side of the substrate along the first direction.

In some embodiments, the first stop assembly has: the cell holder comprises a substrate, a third blocking member and a first limiting member, wherein the third blocking member is arranged on the substrate, the first limiting member is connected with the third clamping jaw, and when the third clamping jaw moves to the first preset position towards the outer side of the cell holding part along the first direction, the first limiting member moves along the direction towards the third blocking member and is blocked by the third blocking member; the second stop assembly has: the battery pack further comprises a fourth blocking member and a second limiting member, wherein the fourth blocking member is arranged on the substrate, the second limiting member is connected with the fourth clamping jaw, and when the fourth clamping jaw moves to the second preset position along the first direction towards the outer side of the battery cell holding part, the second limiting member moves along the direction towards the fourth blocking member and is blocked by the fourth blocking member.

In some embodiments, the baffle plate assembly comprises: a fourth base; a separator having a length in a longitudinal direction that is greater than a length in a longitudinal direction of the battery cell, a first end portion of one end in the longitudinal direction of the separator being fixed to the fourth base, and a second end portion of the other end in the longitudinal direction of the separator being cantilevered and extending in a direction of the battery cell holding portion; the first supporting plate is arranged on one side of the partition plate in the length direction and is connected with the second end part; the second supporting plate is arranged on the other side of the partition plate in the length direction and is connected with the second end part; the battery cell comprises a battery cell, a first supporting plate and a second supporting plate, wherein the first supporting plate and the second supporting plate respectively protrude at least along one side of the thickness direction of the separator, the first supporting plate is opposite to a lug on one side of the length direction of the battery cell, and the second supporting plate is opposite to a lug on the other side of the length direction of the battery cell.

In some embodiments, the baffle plate assembly further comprises: a fifth base to which the fourth base is floatably mounted in the first direction; a fourth elastic component that applies a force to the fourth base along the first direction.

Drawings

Fig. 1 is a perspective view of an embodiment of a tab welding carrier according to the present invention.

Fig. 2 is a schematic view of a front view of the clamping device of the first holding portion in fig. 1.

Fig. 3 is a schematic view of the clamping device of fig. 1 in a rear view.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5 is a schematic view of a front view of the holding device of the first holding portion in fig. 1.

Fig. 6 is a front view of the holding device of the first holding portion in fig. 1 in a front direction.

Fig. 7 is a front perspective view of the holder of fig. 5.

Fig. 8 is a perspective view of the holding device in fig. 5 in a rear view direction.

FIG. 9 is a schematic view in a rear view direction of the screen assembly of FIG. 1.

FIG. 10 is a schematic view of the essential parts of the diaphragm assembly of FIG. 9.

Fig. 11 is an exploded view of the baffle assembly of fig. 10.

Fig. 12 is a schematic view of the battery cell and the top cap mounted on the tab welding carrier according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present embodiment, and are not to be construed as limiting the present embodiment.

In the description of the present embodiment, it should be understood that the orientation or positional relationship indicated by referring to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present embodiment and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present embodiment.

In the description of the present embodiment, a plurality of the terms are one or more, a plurality of the terms are two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present embodiment, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present embodiment in combination with the specific contents of the technical solutions.

In the following description, for convenience of explanation, the left-right direction in the drawings is referred to as a "first direction", the up-down direction orthogonal to the left-right direction in the drawings is referred to as a "second direction", and the front-back direction orthogonal to the left-right direction and the up-down direction in the drawings is referred to as a "third direction".

Referring to fig. 12, before describing the tab welding carrier 100 of the present embodiment, first, the cell 703 and the top cover 701 mounted on the tab welding carrier 100 will be briefly described. Specifically, the battery cell 703 is a battery cell 703 of a power battery, the battery cell 703 is rectangular parallelepiped, and tabs 704 are provided in the longitudinal direction of the battery cell 703. In addition, the power battery further comprises a top cover 701, and tab connecting pieces 702 for connecting with tabs 704 of the battery core 703 are respectively arranged at two ends of the top cover 701 in the length direction. The tab connecting piece 702 and the tab 704 are welded by laser. In addition, one power battery may have one battery cell 703, or may have two battery cells 703 (for example, fig. 12 has two battery cells 703).

Fig. 1 is a perspective view of a tab welding carrier 100. Referring to fig. 1, a tab welding carrier 100 (hereinafter, simply referred to as "carrier 100" for convenience of description) according to an embodiment is used to mount and hold a battery cell 703 of a power battery and a top cover 701. The tab welding carrier 100 includes: the substrate 101 is provided with a first holding portion 103 for holding the cell 703 (for convenience of distinction, also referred to as a "first cell 703 a") and the cap 701 corresponding to the first cell 703a (for convenience of distinction, also referred to as a "first cap 701 a") on one side in the third direction of the substrate 101. The first holding portion 103 includes: a cell holder 102 for holding a cell 703, a clamping device 200 for clamping a top cover 701, and a holding device 300 for holding a contact state between a tab 704 of the cell 703 and a tab attachment piece 702 (hidden from view by the tab 704 in fig. 1) of the top cover 701.

The clamping device 200 is disposed on one side of the cell holding portion 102 in the third direction, and includes: a pair of jaws (sometimes also referred to as "first jaw 201" and "second jaw 202" for ease of distinction) and a resilient member (sometimes also referred to as "first resilient member 205" for ease of distinction). The first and second jaws 201 and 202 may be driven to approach or separate from each other in a first direction orthogonal to the third direction. The first elastic member 205 is provided to urge the first jaw 201 and the second jaw 202 toward each other in the first direction so that the first jaw 201 and the second jaw 202 are brought close to each other.

The holding device 300 includes: a pair of jaws (sometimes also referred to as "third jaw 301" and "fourth jaw 302" for ease of distinction), a resilient member (sometimes also referred to as "third resilient member 311" for ease of distinction), and a pair of stop members (sometimes also referred to as "first stop member 305" and "second stop member 306" for ease of distinction). The third clamping jaw 301 is located on one side of the cell holding part 102 in the first direction and is movable in the first direction. The fourth clamping jaw 302 is located on the other side of the cell holding portion 102 in the first direction and faces the third clamping jaw 301. Also, the fourth jaw 302 is movable in the first direction. The third elastic member 311 is provided to urge the third jaw 301 and the fourth jaw 302 so that the third jaw 301 and the fourth jaw 302 move in the first direction toward the cell holder 102, respectively. The first stopper assembly 305 is configured to restrict movement of the third clamping jaw 301 in the first direction toward the cell holder 102 when the third clamping jaw 301 moves in the first direction toward the outside of the cell holder 102 to a first preset position. The second stop assembly 306 is configured to limit movement of the fourth clamping jaw 302 in the first direction toward the cell holder 102 when the fourth clamping jaw 302 is moved in the first direction toward the outside of the cell holder 102 to a second preset position.

According to the carrier 100 of the present embodiment, the tab 704 of the battery cell 703 of the power battery and the tab connection piece 702 of the top cover 701 can be held in a state of mutual contact without external power, and therefore, the carrier 100 of the present embodiment can be applied to, for example, a production line.

Specifically, the carrier 100 of the line generally needs to be transported in a circulating manner, and it is difficult to directly apply the carrier of the line to the driving force of, for example, a cylinder or a motor because of the need to connect elements such as an air pipe and a cable. In the present embodiment, the first jaw 201 and the second jaw 202 can be held in a clamped state (initial state or closed state) by the first elastic member 205. Further, the carrier 100 can maintain the state of holding the top cover 701 without mounting any of these elements requiring connection of an air tube, a cable, and the like.

Further, since the third elastic member 311 biases the third jaw 301 and the fourth jaw 302 so that the third jaw 301 and the fourth jaw 302 are moved in the first direction toward the cell holding portion 102, the third jaw 301 and the fourth jaw 302 can be held in a clamped state (closed state) without external power, and a state in which the battery cell is clamped can be held.

Further, since the first stopper assembly 305 is provided so that the movement of the third jaw 301 in the first direction toward the cell holder 102 is restricted when the third jaw 301 moves in the first direction to the first preset position, and the second stopper assembly 306 is provided so that the movement of the fourth jaw 302 in the first direction toward the cell holder 102 is restricted when the fourth jaw 302 moves in the first direction to the second preset position, the third jaw 301 and the fourth jaw 302 can be held in the open state, respectively, without external power. This releases the holding of the cell 703, and allows the cell 703 to be loaded and unloaded, or other processes (described later) to be performed.

Accordingly, the carrier 100 of the present embodiment does not need to add extra power for driving the clamping device 200 and the holding device 300 to the carrier 100, and only needs to install driving devices (such as air cylinders, motors, etc.) for opening the first clamping jaw 201 and the second clamping jaw 202, the third clamping jaw 301 and the fourth clamping jaw 302, and the first stopping assembly 305 and the second stopping assembly 306 at preset positions of the production line.

The cell holder 102 may be, for example, an existing cell holding jig. The cell holding portion 102 is provided in the middle of the substrate 101, for example, in the left-right direction, and the clamping device 200 is provided on the front side of the cell holding portion 102, for example, in the front-rear direction. The battery cells may be fed to the cell holder 102 by an existing automatic feeding device such as a robot. When the third clamping jaw 301 and the fourth clamping jaw 302 are respectively kept in the open state, the battery core can be loaded and unloaded. The top cover 701 may also be fed to the holding device 200 by an existing automatic feeding device such as a robot. The position between the clamping device 200 and the cell holding portion 102 may be set as appropriate according to the position of welding of the tab 704. That is, the clamping device 200 may be configured such that the tab connection pieces 702 on both sides in the longitudinal direction of the top cover 701 can contact the tabs 704 on both sides in the longitudinal direction of the battery cell 703 in a state where the top cover 701 is clamped, thereby achieving accurate welding.

In some embodiments, to match different power cell production processes, the first retaining portion 103 may further include: a baffle plate assembly 400. The separator assembly 400 is provided on the other side (the rear side in the drawing) of the cell holder 102 in the third direction, and is drivable in the third direction to project above the cell holder 102 or to depart from above the cell holder 102. Specifically, in some power battery configurations, two cells may be housed within an aluminum casing. The two battery cores are stacked along the thickness direction and bound together through a bonding tape and the like. In order to prevent the cells from being excessively stacked in the thickness direction to cause extrusion and the like, before the cells are stacked, a partition plate is usually inserted into the upper part of one cell, then another cell is stacked, and the partition plate is taken out after the stacking of the cells is completed. Therefore, a certain gap can be formed between the two battery cells, and the battery cells are prevented from being excessively extruded and the like. Therefore, in the present embodiment, in order to match a power battery in which, for example, two cells are housed in an aluminum case, the separator assembly 400 may be disposed on the rear side of the cell holding portion 102 of the first holding portion 103, and the clamping device 200 may be opposed to the cell holding portion 102 in the front-rear direction.

In some embodiments, in order to improve the production efficiency of the power battery, a plurality of battery cells may be placed on the carrier 100. For example, the other side (rear side in the drawing) in the third direction of the substrate 101 may be provided with a second holding portion 105 for holding another cell 703 (for convenience of distinction, also referred to as "second cell 703 b") and a cap 701 corresponding to the other cell 703 (for convenience of distinction, also referred to as "second cap 701 b"). Like the first holding portion 103, the second holding portion 105 may include: another cell holding portion 102, another clamping device 200, and another holding device 300. In contrast to the clamping device 200 of the first holding portion 103, the other clamping device 200 of the second holding portion 105 is disposed on the other side (the rear side in the drawing) of the other cell holding portion 102 of the second holding portion 105 in the third direction. Like the holder 300 of the first holder 103, the third jaw 301 and the fourth jaw 302 of the other holder 300 of the second holder 105 are also located on both sides of the other cell holder 102 of the second holder 105 in the first direction. The entire cell holding portion 102, the clamping device 200, and the holding device 300 of the second holding portion 105 are the same as the cell holding portion 102, the clamping device 200, and the holding device 300 of the first holding portion 103 except for the above-described difference in arrangement positions, and therefore, in the following description, only the clamping device 200 and the holding device 300 themselves will be described in their entirety, and a separate description will be made as necessary.

In the case where a plurality of holding regions (the first holding portion 103 and the second holding portion 105) are provided on the substrate 101, in some embodiments, the second holding portion 105 may further include: another baffle plate assembly 400. In contrast to the separator assembly 400 of the first holding portion 103, another separator assembly 400 of the second holding portion 105 may be disposed on one side (front side in the drawing) of the other cell holding portion 102 in the third direction.

In the case where a plurality of diaphragm assemblies 400 are provided, in order to make the structure of the carrier 100 more compact as a whole, in some embodiments, one diaphragm assembly 400 of the first holding portion 103 and another diaphragm assembly 400 of the second holding portion 105 at least partially overlap in the up-down direction. Specifically, for example, the diaphragm assemblies 400 and 400 of the first and second holding portions 103 and 105 are respectively disposed at the central portions in the front-rear direction of the substrate 101, and the diaphragm assembly 400 of the second holding portion 105 is disposed above the diaphragm assembly 400 of the first holding portion 103, for example. This allows the two diaphragm assemblies 400 to be partially or entirely overlapped with each other in a plan view, thereby making the overall structure of the carrier 100 more compact.

Hereinafter, the clamping device 200, the holding device 300, and the separator assembly 400 will be described in more detail.

[ holding device 200]

Fig. 2 is a schematic view of a front view of the holding device 200. Fig. 3 is a schematic view of a rear view direction of the chucking device 200. Fig. 4 is a partially enlarged view of a point a in fig. 2. In fig. 4, for convenience of illustration, only a main part in a partially enlarged view is shown.

As described above, the clamping device 200 is provided on one side of the cell holding portion 102 in the third direction, and has: a first clamping jaw 201, a second clamping jaw 202 and a first elastic component 205.

Referring to fig. 2 to 4, specifically, the clamping device 200 includes: a first clamping jaw 201, a second clamping jaw 202, a first guide component 203, a first driving component 204 and a first elastic component 205. The first clamping jaw 201 and the second clamping jaw 202 are close to or far away from each other along the first direction. The first guide assembly 203 has a first guide 206, a first mount 207, and a second mount 208. The first guide 206 extends in a first direction. The first mounting member 207 and the second mounting member 208 are respectively movable along the first guide member 206. The first jaw 201 is supported to a first mount 207. The second jaw 202 is supported to a second mount 208. The first driving member 204 is located between the first clamping jaw 201 and the second clamping jaw 202 and is in transmission connection with the first clamping jaw 201 and the second clamping jaw 202 respectively. The first driver 204 is driven to extend or retract in a second direction orthogonal to the first direction. The first driving member 204 is provided with a first guide portion 209. The first guide portion 209 is formed to move the first jaw 201 and the second jaw 202 away from each other in the first direction when the first driver 204 is driven to extend (in the upward direction in the drawing). The first guide 209 is also formed to allow the first jaw 201 and the second jaw 202 to approach each other in the first direction when the first driver 204 is driven to retract (in the downward direction in the drawing). The first elastic member 205 is provided to urge the first jaw 201 and the second jaw 202 toward each other in the first direction so that the first jaw 201 and the second jaw 202 are close to each other.

According to the clamping device 200 of the present embodiment, since the first elastic member 205 biases the first jaw 201 and the second jaw 202 so as to approach each other in the first direction, the first jaw 201 and the second jaw 202 can be held in the clamped state without external power. Specifically, for example, in a state where the first driving member 204 is not subjected to an external force, the first driving member 204 is in a retracted state (in a lower direction in the drawing), and the first jaw 201 and the second jaw 202 are brought close to each other in the first direction by the first elastic member 205. When the first driving member 204 is driven to extend by an external force, the first jaw 201 and the second jaw 202 move away from each other in the first direction by the first guiding portion 209 against the elastic force of the first elastic component 205. Thereby, the first jaw 201 and the second jaw 202 are in an open state, and the top cover 701 can be clamped.

The chucking device 200 may include, for example, a first base 210, and the first base 210 is mounted on, for example, the substrate 101 as the carrier 100. The first guide assembly 203 is mounted on the first base 210. The first guide member 203 is not particularly limited in its structure as long as it can linearly guide the first jaw 201 and the second jaw 202. For example, the first guide assembly 203 may be selected from commercially available linear slide assemblies, namely: a linear slide is used as the first guide 206. The linear slide assembly further includes, for example, two sliders, and the two sliders are used as the first mounting section 207 and the second mounting section 208, respectively. By using the linear slide assembly as the first guide assembly 203, the sliding smoothness of the first guide assembly 203 can be improved, and the first clamping jaw 201 and the second clamping jaw 202 are prevented from being stuck when being opened (separated from each other) or closed (moved close to each other).

The first and second jaws 201 and 202 are not particularly limited in structure as long as they can clamp the top cover 701, and for example, the first and second jaws 201 and 202 may each have a substantially L shape. The first jaw 201 and the second jaw 202 may be formed by integral molding or may be assembled by a plurality of parts. The first jaw 201 may be mounted directly on a slide as the first mount 207. In addition, to facilitate the driving connection between the first clamping jaw 201 and other components (e.g., the first driving member 204, the first resilient assembly 205, etc.), a first connecting plate 211 may be mounted on the first mounting member 207, and the first clamping jaw 201 may be adjustably mounted to the first connecting plate 211 in a first direction. Likewise, a second web 212 may be mounted to the slide as the second mount 208, and the second jaw 202 may be adjustably mounted to the second web 212 in the first direction. By arranging the first and second jaws 201 and 202 to be adjustable in the first direction, respectively, the initial positions of the first and second jaws 201 and 202 can be easily adjusted according to the type of the top cover 701.

The first drive member 204 may be mounted to the first base 210 by a linear slide assembly (not shown) that is guided in an up-down direction. The first driving member 204 may be, for example, a plate-like member. The first guide 209 may be formed directly by machining at the first driving member 204. For example, a predetermined trajectory (described later) may be directly formed on both left and right sides of the first driving member 204, thereby forming the first guide 209. The first and second jaws 201 and 202 may abut against the first guide 209, respectively, and when the first jaw 201 is attached to the first connection plate 211 and the second jaw 202 is attached to the second connection plate 212, the first connection plate 211 and the second connection plate 212 may abut against the first guide 209, respectively. When the first driving member 204 is driven in the up-down direction by, for example, a first power unit (not shown) installed at a specific position of the line, the first jaw 201 and the second jaw 202 move closer to or away from each other along with the change of the trajectory of the first guide 209.

With continued reference to fig. 4, in some embodiments, to simplify the structure of the first guide 209, the first guide 209 may include: a first guide surface 213 and a second guide surface 214. Wherein the first guide surface 213 is arranged on the opposite side of the first driver 204 from the first jaw 201. The second guide surface 214 is disposed on the opposite side of the first driver 204 from the second jaw 202. Accordingly, the first jaw 201 (or the first connecting plate 211 or a first roller 215 described later) can directly abut against the first guide surface 213, and the distance between the first jaw 201 and the first guide surface 213 can be shortened, so that the entire clamping device 200 can be made more compact. Likewise, since the second guide surface 214 is provided on the opposite side of the first driver 204 from the second jaw 202, the second jaw 202 (or the second connecting plate 212 or a second rolling member 216 described later) can directly abut against the second guide surface 214.

In some embodiments, in order to easily achieve opening (moving away from each other) or closing (moving closer to each other) of the first jaw 201 and the second jaw 202, a distance between the first guide surface 213 and the second guide surface 214 in the first direction is gradually reduced in an extending direction (a direction from bottom to top in the drawing) of the first driving member 204. The first guide surface 213 and the second guide surface 214 have substantially the same trajectory, and the first guide surface 213 will be mainly described herein as an example, and the second guide surface 214 will be described only when necessary. The first guide surface 213 is, for example, substantially circular arc-shaped. The first guide surface 213 is gradually reduced from the middle of the left-right direction of the first driver 204 in the extending direction of the first driver 204.

When the first driver 204 is at the upper position, the first jaw 201 abuts against the lower portion of the first guide surface 213, and the distance from the first jaw 201 to the middle of the first driver 204 in the left-right direction increases, and at the same time, the second jaw 202 abuts against the lower portion of the second guide surface 214, and the distance from the second jaw 202 to the middle of the first driver 204 in the left-right direction also increases. That is, the first jaw 201 and the second jaw 202 are in the open position.

With continued reference to fig. 2, when the first driver 204 is in the lower position, the first jaw 201 abuts against the upper portion of the first guide surface 213, the distance of the first jaw 201 from the middle of the first driver 204 in the left-right direction decreases, and at the same time, the second jaw 202 abuts against the upper portion of the second guide surface 214, the distance of the second jaw 202 from the middle of the first driver 204 in the left-right direction also decreases. That is, the first jaw 201 and the second jaw 202 are in the closed position.

In this embodiment, the first power device of the assembly line may be disposed below the clamping device 200, for example, and pushes the first driving member 204 from bottom to top. Namely: in this embodiment, the direction in which the first driving member 204 moves from bottom to top is the extending direction. In addition, in other embodiments, the first power device may pull the first driving member 204 from top to bottom, that is: the direction in which the first driving member 204 moves from the top to the bottom can also be used as the extending direction. In this case, it is only necessary to change the guide trajectories of the first guide surface 213 and the second guide surface 214.

With continued reference to fig. 4, in some embodiments, to reduce friction between the first jaw 201 (or the first connecting plate 211) and the second jaw 202 (or the second connecting plate 212), and the first driving member 204, and improve smoothness of the clamping device 200, the clamping device 200 may further include: a first roller 215 and a second roller 216. Wherein the first rolling member 215 and the first jaw 201 are rollingly connected and abut the first guide surface 213. The second roller 216 and the second jaw 202 are rollingly connected to and abut the second guide surface 214. With the first jaw 201 mounted to the first connecting plate 211 and the second jaw 202 mounted to the second connecting plate 212, the first roller 215 may also be mounted to the first connecting plate 211, the second roller 216 may also be mounted to the second connecting plate 212. The first rolling member 215 and the second rolling member 216 may be selected as rollers, respectively, and the first rolling member 215 and the second rolling member 216 may be mounted to the first coupling plate 211 and the second coupling plate 212, respectively, by a known mounting means.

With continued reference to fig. 2 and 4, as described above, the first elastic assembly 205 is configured to apply a force to the first jaw 201 and the second jaw 202 so as to cause the first jaw 201 and the second jaw 202 to approach each other in the first direction. In some embodiments, the first elastic component 205 may include: a first elastic member 217 and a second elastic member 218. The first elastic member 217 may be provided on one side of the first jaw 201, and may urge the first roller 215 so that the first roller 215 is held in contact with the first guide surface 213. The second elastic member 218 may be provided on one side of the second jaw 202, and may urge the second roller 216 in such a manner as to hold the second roller 216 in abutment with the second guide surface 214. The first elastic member 217 and the second elastic member 218 have substantially the same structure, and only the first elastic member 217 will be described as an example, and only the second elastic member 218 will be referred to as necessary. Specifically, the first elastic member 217 may be, for example, a compression spring. One end of the first elastic member 217 abuts against the first connection plate 211, and the other end of the first elastic member 217 is fixed, for example, to a side of the first base 210 away from the first connection plate 211 in the left direction. Thereby, the first elastic member 217 can push the first connection plate 211 in the right direction, so that the first rolling member 215 mounted on the first connection plate 211 is kept abutting against the first guide surface 213. Further, the second elastic member 218 may also push the second connecting plate 212 in the left direction, thereby keeping the second rolling member 216 mounted on the second connecting plate 212 abutting against the second guide surface 214.

Thereby, the first elastic member 217 and the second elastic member 218 abut the first connection plate 211 and the second connection plate 212, respectively, in a compressed state. After the power from, for example, the first power means of the line is removed, the first elastic member 217 and the second elastic member 218 retract the first driving member 204 by driving the first connecting plate 211 against the first guide surface 213 and driving the second connecting plate 212 against the second guide surface 214. Thus, after the power of the first power means of the assembly line is removed, the first and second elastic members 217 and 218 restore the first and second jaws 201 and 202 to the closed state (i.e., the clampable state).

In addition, although the first elastic member 205 has been described above as having the first elastic member 217 and the second elastic member 218, the present invention is not limited thereto. In other embodiments, the first elastic assembly 205 may also include a tension spring, and both ends of the tension spring respectively pull the first connecting plate 211 and the second connecting plate 212, so that the first clamping jaw 201 and the second clamping jaw 202 can be kept in the closed state (i.e., the clamping state) without power from the outside.

With continuing reference to figure 4 and with additional reference to figure 3, in some embodiments, to enable precise control of the positional accuracy of the opening (away from each other) or closing (toward each other) of the first jaw 201 and the second jaw 202, the clamping device 200 may further comprise: a first stop 219 and a second stop 220, wherein the first stop 219 is configured to stop the first driver 204 in the extending direction of the first driver 204, and the second stop 220 is configured to stop the first driver 204 in the retracting direction of the first driver 204. The first blocking member 219 and the second blocking member 220 may be mounted on the first base 210, respectively, for example. The first stopper 219 is installed above the first base 210, for example, and limits the upward travel of the first driving member 204. The second stopper 220 is installed below the first base 210, for example, and limits a downward movement stroke of the first driving member 204. Thus, the stroke of the first and second jaws 201 and 202 that can be opened or closed can be limited by limiting the stroke of the first driver 204 driven in the up-down direction, and the positional accuracy of the first and second jaws 201 and 202 that are opened or closed can be thereby improved.

In some embodiments, the welded cells and caps 701 are blanked for ease of existing automatic blanking apparatus, such as robots and the like. The carrier 100 of the present embodiment may further include a second guiding element 221 and a second elastic element 224. As the second guide member 221, for example, a second guide member 222 and a third mounting member 223 may be provided. The second guide 222 extends in a third direction orthogonal to the first direction and the second direction, respectively. The third mount 223 is movable along the first guide 206. The clamping device 200 is supported to the third mount 223. That is, the first base 210 of the clamping device 200 is mounted on the third mount 223. The second elastic member 224 urges the clamping device 200 so that the clamping device 200 approaches the cell holding portion 102. Specifically, the second guide member 221 and the second elastic member 224 may be mounted on the substrate 101 of the carrier 100, for example. As the second guide member 221, reference may be made to the first guide member 203, and for example, a linear slide member may be used as the second guide member 221. Likewise, the second elastic element 224 may also be arranged with reference to the first elastic element 205.

By providing the second guide member 221 and the second elastic member 224, the clamping device 200 can be held close to the cell holding portion 102. Specifically, for example, a second power unit may be provided at a preset position of the assembly line (e.g., a position close to the first power unit), and the second power unit drives the clamping device 200 away from the cell holding part 102 while the first power unit drives the clamping device 200 to open. In addition, after the power of the second power means is removed, the clamping means 200 can be restored to the original position by the second elastic member 224.

[ holding device 300]

The holding device 300 will be described in detail below.

Fig. 5 and 6 are schematic views of the front direction of the holding device 300. Fig. 7 and 8 are perspective views of the holder 300.

Referring to fig. 5 to 8, as described above, the holding device 300 is provided on the substrate 101. The holding device 300 includes: a third jaw 301, a fourth jaw 302, a third guide assembly 303, a fourth guide assembly 304, a third resilient assembly 311, a first stop assembly 305, and a second stop assembly 306.

The third clamping jaw 301 is located on one side (right side) of the cell holding portion 102 in the first direction, and is movable in the first direction. The fourth clamping jaw 302 is located on the other side (left side) of the cell holding portion 102 in the first direction and faces the third clamping jaw 301. The fourth jaw 302 is movable in a first direction.

The third guide member 303 has: a third guide 307 and a fourth mount 308. The third guide 307 is disposed on the substrate 101 and extends in the first direction. Fourth mount 308 supports third jaw 301 and is movable along third guide 307.

The fourth guide member 304 has: a fourth guide 309 and a fifth mount 310. The fourth guide 309 is disposed on the substrate 101 and extends in the first direction. The fifth mount 310 supports the fourth jaw 302 and is movable along the fourth guide 309.

The third elastic member 311 is provided to urge the third jaw 301 and the fourth jaw 302 so that the third jaw 301 and the fourth jaw 302 move toward the inside of the substrate 101 in the first direction, respectively.

The first stopper assembly 305 has: a third stopper 312 and a first limiting member 313. The third barrier 312 is disposed on the substrate 101. The first limiting member 313 and the third jaw 301 are connected. When the third jaw 301 moves to the first preset position in the first direction toward the outside of the substrate 101, the first restriction member 313 moves toward the third stopper 312 and is stopped by the third stopper 312.

The second stop assembly 306 has a fourth stop 314 and a second limiting member 315. The fourth blocking member 314 is disposed on the substrate 101. Second limiting member 315 is connected to fourth clamping jaw 302. When the fourth jaw 302 moves toward the outer side of the substrate 101 in the first direction to the second preset position, the second limiting member 315 moves toward the fourth blocking member 314 and is blocked by the fourth blocking member 314.

According to the holding device 300 of the present embodiment, it is possible to hold the opened state or the closed state without external power. Specifically, since the third elastic member 311 biases the third jaw 301 and the fourth jaw 302 so that the third jaw 301 and the fourth jaw 302 move in the first direction toward the inside of the substrate 101, respectively, the third jaw 301 and the fourth jaw 302 can be held in a clamped state (closed state) without external power. This allows the cell 703 to be sandwiched and held.

Further, when the third jaw 301 moves to the first preset position, the first restriction member 313 connected to the third jaw 301 is blocked by the third blocking member 312, and when the fourth jaw 302 moves to the second preset position toward the outside of the substrate 101 in the first direction, the second restriction member 315 connected to the fourth jaw 302 is blocked by the fourth blocking member 314, so that the third jaw 301 and the fourth jaw 302 can be held in the open state, respectively, without external power. This allows the cell 703 to be released from being held, and allows the cell 703 to be loaded and unloaded or other processes (described later) to be performed.

Accordingly, the holding device 300 of the present embodiment does not need to add power for driving the holding device 300 to the carrier 100, and only needs to install a driving device (e.g., an air cylinder, a motor, etc.) for opening the third clamping jaw 301 and the fourth clamping jaw 302, and the first stopping assembly 305 and the second stopping assembly 306 at a predetermined position of the production line.

Specific positions of the first preset position and the second preset position are not particularly limited, and may be positions within a stroke in which the third jaw 301 and the fourth jaw 302 move outward of the substrate 101 in the first direction with respect to the clamped state (closed state). The first preset position and the second preset position may be determined according to a space required by the battery cell 703 for loading and unloading. In the step of shaping the tab 704 of the electric core 703, for example, the first preset position and the second preset position may be set to ensure that the third jaw 301 and the fourth jaw 302 do not interfere with the tab 704 being shaped.

The term "outer side" of the substrate 101 refers to an edge region of the substrate 101 or a portion outside the substrate 101, and the term "inner side" of the substrate 101 refers to a portion located in a middle region (for example, a middle region in the left-right direction) of the substrate 101 with respect to the outer side of the substrate 101.

The holding device 300 of the present embodiment may be directly mounted on the substrate 101. For example, the third guide 307 of the third guide assembly 303 and the fourth guide 309 of the fourth guide assembly 304 may be directly mounted on the substrate 101. The third guide member 303 is not particularly limited as long as it can linearly guide the third jaw 301 and the fourth guide member 304 as long as it can linearly guide the fourth jaw 302. The third guide unit 303 and the fourth guide unit 304 have substantially the same configuration, and the third guide unit 303 will be mainly described as an example, and the fourth guide unit 304 will be described only when necessary.

For example, the third guide assembly 303 may be selected from commercially available linear slide assemblies, namely: a linear slide is used as the third guide 307. In addition, the linear slide assembly further includes, for example, a slider, which is used as the fourth mounting member 308. By using the linear slide rail assemblies as the third guide assembly 303 and the fourth guide assembly 304, respectively, the smoothness of the sliding of the third guide assembly 303 and the fourth guide assembly 304 can be improved, and the third clamping jaw 301 or the fourth clamping jaw 302 can be prevented from being stuck when being opened (separated from each other) or closed (moved close to each other).

Further, the third guide 307 and the fourth guide 309 may be integrally formed. That is, only one linear guide extending in the left-right direction of the substrate 101 may be used, and two sliders may be mounted on the linear guide, one of the sliders may be the fourth mounting device 308, and the other slider may be the fifth mounting device 310.

With continued reference to fig. 5 to 8, the third clamping jaw 301 and the fourth clamping jaw 302 are not particularly limited in structure as long as they can hold the battery core 703, and for example, the third clamping jaw 301 and the fourth clamping jaw 302 may each have a substantially flat plate shape. The third jaw 301 may be mounted directly on a slide as fourth mount 308. In order to facilitate connection of the third jaw 301 to other members (e.g., a second driving member 320, a third elastic member 311, a first stopper member 305, etc., which will be described later), a first mounting seat 316 may be mounted on the fourth mounting member 308. The third jaw 301 may be adjustably mounted to the first mount 316 in a first direction. To facilitate adjustment of the third jaw 301, a first reference ruler 317 may be mounted on the first mount 316. Likewise, a second mounting block 318 may be mounted on the slider as the fifth mount 310, and the fourth jaw 302 may be adjustably mounted to the second mounting block 318 in the first direction. To facilitate adjustment of the fourth jaw 302, a second reference ruler 319 may be mounted on the second mount 318. By providing the third jaw 301 and the fourth jaw 302 to be adjustable in the first direction, respectively, the initial positions of the third jaw 301 and the fourth jaw 302 can be easily adjusted according to the type of the battery cell 703. Further, by providing the first reference scale 317 and the second reference scale 319, the adjustment accuracy of the third jaw 301 and the fourth jaw 302 can be improved.

In some embodiments, the third clamping jaw 301 and the fourth clamping jaw 302 are easily driven by an external driving device (such as an air cylinder and a motor). The holding device 300 of the present embodiment may further include: a second driver 320 and a third driver 321. Wherein one end of the second driver 320 is connected to the third jaw 301. The other end of the second driver 320 extends toward the outside of the substrate 101 in the first direction. Specifically, the second driving member 320 is, for example, substantially L-shaped, and a hook 322 is provided at a distal end of the second driving member 320. One end of the second driving member 320 is connected to the first mounting seat 316, and a distal end of the second driving member 320, at which the hook portion 322 is disposed, is cantilevered and may extend beyond the substrate 101 in the first direction. Thus, the peripheral driving means can easily drive the third jaw 301 by directly hooking the hook portion 322 of the second driving member 320 and pulling the second driving member 320 in the first direction in such a manner that the third jaw 301 moves along the outer side of the base plate 101. Similarly, one end of the third driver 321 is connected to the fourth jaw 302, and the other end of the third driver 321 also extends outward of the substrate 101 in the first direction. The third driver 321 and the second driver 320 have substantially the same structure, connection mode, and the like, and will not be described in detail.

With continued reference to fig. 6 and 8 and with additional reference to fig. 5 and 7, as described above, the third elastic member 311 is provided to urge the third clamping jaw 301 and the fourth clamping jaw 302 so as to move the third clamping jaw 301 and the fourth clamping jaw 302 toward the cell holding portion 102 in the first direction, respectively. In some embodiments, the third elastic assembly 311 may include: a third elastic member 323 and a fourth elastic member 324. The third elastic member 323 may be disposed on one side of the substrate 101 in the first direction, and may bias the third jaw 301 to move the third jaw 301 toward the inside of the substrate 101 in the first direction. The fourth elastic member 324 may be disposed on the other side of the first direction of the substrate 101, and may bias the fourth jaw 302 so that the fourth jaw 302 moves toward the inside of the substrate 101 in the first direction. The third elastic member 323 and the fourth elastic member 324 have substantially the same structure, and only the third elastic member 323 will be described as an example, and only the fourth elastic member 324 will be referred to if necessary.

Specifically, the third elastic member 323 may be a compression spring, for example. A spring seat 325 may be provided on the base plate 101, one end of the third elastic member 323 abuts against the spring seat 325, and the other end of the third elastic member 323 abuts against a spring mounting post 326 connected to the first mounting seat 316. Thereby, the third elastic member 323 can push the spring mounting column 326 in the left direction, so that the third jaw 301 is moved and held in the left direction (i.e., held in the closed state) via the first mounting seat 316 and the spring mounting column 326.

Thus, without receiving an external force from the driving device, the third elastic member 323 and the fourth elastic member 324 are held in the initial state (having a certain compression force in this state), in which the third elastic member 323 holds the third jaw 301 in the closed state and the fourth elastic member 324 also holds the fourth jaw 302 in the closed state.

In addition, although the third elastic member 311 has been described as having the third elastic member 323 and the fourth elastic member 324, the present invention is not limited thereto. In other embodiments, the third elastic component 311 may also include a tension spring (not shown), and both ends of the tension spring respectively pull the first mounting seat 316 and the second mounting seat 318, so that the third clamping jaw 301 and the fourth clamping jaw 302 can be kept in a closed state (i.e. a clamping state) under the condition of no power from the outside.

The first stop assembly 305 is described in detail below. The structure of the second stopper member 306 is substantially the same as that of the first stopper member 305, and the first stopper member 305 is mainly used as an example for description, and the second stopper member 306 is referred to as necessary.

With continuing reference to fig. 5 and with additional reference to fig. 6 and 7, as noted above, the first stop assembly 305 has: a third stopper 312 and a first limiting member 313. The third barrier 312 is disposed on the substrate 101. The first restriction member 313 and the third jaw 301 are connected. When the third jaw 301 moves in the first direction to the first preset position toward the outside of the substrate 101, the first restriction member 313 moves in a direction toward the third stopper 312 (downward direction in the drawing) and is stopped by the third stopper 312. Specifically, for example, the third stopper 312 may have a flat plate shape. The right side of the substrate 101 is provided with a mounting groove 327, and the third blocking member 312 is accommodated in the mounting groove 327. The third stopper 312 is provided with a first surface portion 328, the first surface portion 328 is planar, the first surface portion 328 may be flush with the upper surface of the substrate 101 in a case of being received in the mounting groove 327, and the first surface portion 328 is opposite to the first restriction member 313 in the up-down direction. The first restriction member 313 is movable in a direction perpendicular to the first surface portion 328 (up-down direction in the drawing). When the third jaw 301 is in the closed position, the lower end of the first restriction 313 directly abuts the first surface portion 328 of the third stopper 312 and moves along the first surface portion 328. When the third jaw 301 is moved in the first direction toward the outside of the substrate 101 by the peripheral driving device, the first restriction member 313 also moves toward the outside of the third stopper 312 along with the third jaw 301. When the third jaw 301 is moved to the first preset position, the first restriction member 313 comes off from the first surface portion 328 of the third stopper 312 and slides downward, so that the lower end portion of the first restriction member 313 abuts against the right side surface of the third stopper 312. Thereby, the movement of the third jaw 301 toward the inside of the substrate 101 in the first direction is restricted, and the third jaw 301 is held in the open state.

The first restricting member 313 may be driven by an external driving device to move in the up-down direction, for example. When the first restriction member 313 is driven to move in the upward direction with respect to the third stopper 312, the lower end portion of the first restriction member 313 is disengaged from the right side surface of the third stopper 312, the third claw 301 is released from the restriction, and is driven by the third elastic member 323 to move in the first direction toward the inside of the substrate 101. Thereby, the third jaw 301 is switched to and held in the closed state.

Accordingly, in the holding apparatus 300 of the present embodiment, the third jaw 301 can be easily held in the open state by the first stopper member 305 described above, and the open state can be easily released and switched to the closed state.

Although the third stopper 312 having a flat plate shape is mounted on the substrate 101 as an example in the above description, the present invention is not limited thereto. For example, the substrate 101 itself may be directly used as the third stopper 312, and the upper surface of the substrate 101 may be used as the first surface portion 328.

Although the first stoppers 313 are described above as an example in the second direction (vertical direction) orthogonal to the first direction, the present invention is not limited to this. The moving direction of the first restriction member 313 is not particularly limited as long as the movement of the third jaw 301 is restricted by the third stopper 312, and for example, the first restriction member 313 may move in a third direction (front-rear direction in the drawing) orthogonal to the first direction and the second direction, or may move at a certain angle with respect to these directions.

In some embodiments, in order to easily mount the first stopper assembly 305, the first stopper assembly 305 may further include a second base 329, the second base 329 is mounted to the fourth mounting member 308, and the first restriction member 313 is slidable relative to the second base 329 in a second direction (up-down direction in the drawing) orthogonal to the first direction. Further, the second base 329 may be mounted with, for example, the first guide bushing 330, and correspondingly, the first restriction member 313 may be, for example, in a shaft shape. Thereby, the first restriction member 313 can move smoothly within the first guide bush 330.

In some embodiments, in order to enable the first limiting member 313 to easily slide along the first guide bushing 330, the first stopper assembly 305 may further include a fifth elastic member 331, and the fifth elastic member 331 applies force to the first limiting member 313 in a direction in which the first limiting member 313 faces the third limiting member 312. Specifically, for example, the fifth elastic member 331 may select a compression spring. The compression spring is fitted around the outer circumference of the first restriction member 313. One end of the compression spring abuts the second seat 329 (may also directly abut the second driver 320 or the first guide bushing 330), and the other end of the compression spring abuts the first restriction member 313. Thus, when the third jaw 301 moves to the first preset position in the first direction toward the outside of the substrate 101, the first restriction member 313 is driven by the fifth elastic member 331 to move toward the third stopper 312 and be stopped by the third stopper 312.

In some embodiments, in order to reduce friction when the first restriction member 313 slides with respect to the first surface portion 328 of the third restriction member 312, thereby reducing wear and the like of the third restriction member 312, one end of the first restriction member 313 may be provided with a third rolling member 332, and the third rolling member 332 rolls along the first surface portion 328 of the third restriction member 312 when the third jaw 301 moves toward the inner side of the substrate 101 in the first direction. Specifically, the first stop assembly 305 may include two first limiting members 313. Further, the first stopper assembly 305 further includes roller mounts 333, the roller mounts 333 being connected to lower end portions of the two first limiting members 313, and the third roller 332 being rotatably mounted to the roller mounts 333.

Thus, when the third roller 332 is driven to move in the upward direction with respect to the third stopper 312, the third roller 332 is disengaged from the right side surface of the third stopper 312, the third claw 301 is released from the restriction, and is driven by the third elastic member 323 to move in the first direction toward the inside of the substrate 101. While the third jaw 301 moves toward the inner side of the base plate 101, the third rolling member 332 also rolls along the first surface portion 328 of the third stopper 312. This can greatly reduce wear and the like of the third stopper 312.

Substantially identical to the first stop assembly 305, the second stop assembly 306 can include a third base 334, the third base 334 being mounted to the fifth mounting element 310, the second limiting member 315 being slidable relative to the third base 334 in a second direction. Further, in some embodiments, the second stop assembly 306 may include a sixth elastic member 335, and the sixth elastic member 335 applies a force to the second limiting member 315 in a direction in which the second limiting member 315 faces the fourth blocking member 314. Further, in some embodiments, one end of the second restricting member 315 is provided with the fourth rolling member 336. The fourth stopper 314 is provided with a second surface portion 337, the second surface portion 337 being opposed to the second restriction member 315 in the up-down direction, the second surface portion 337 being planar. When the fourth clamping jaw 302 moves towards the inner side of the substrate 101 in the left-right direction, the fourth rolling member 336 rolls on the second surface portion 337.

Other parts of the second stopper member 306 and the like may be provided with reference to the corresponding parts of the first stopper member 305, and will not be described in detail herein.

The operation of the holding device 300 will be described below. Specifically, the holding device 300 of the present embodiment may sandwich the battery cell 703 having a rectangular parallelepiped shape. The tabs 704 are respectively provided on both sides (left and right sides in the drawing) in the longitudinal direction of the battery cell 703. Further, tab connecting pieces 702 are provided at both ends (left and right sides in the drawing) in the longitudinal direction of the top cover 701. The tab connecting piece 702 and the tab 704 are welded by laser.

The processes before the tab attaching pieces 702 and the tabs 704 are laser welded generally include a top cover mounting process, a tab shaping process, and a tab holding process.

In the top cover mounting step, first, before the top cover 701 is mounted on the battery cell 703, the tab 704 extends outward of the main body of the battery cell 703 in the first direction with respect to the main body of the battery cell 703. In the top cover mounting process, the top cover 701 is held by the holding device 200. After the top cover 701 is attached to the front end of the battery cell 703, the tab connection piece 702 located at one end in the longitudinal direction of the top cover 701 is attached to one side in the longitudinal direction of the main body of the battery cell 703, and the tab connection piece 702 located at the other end in the longitudinal direction of the top cover 701 is attached to the other side in the longitudinal direction of the main body of the battery cell 703.

In the tab shaping step, tabs 704 on both sides in the longitudinal direction of the battery cell 703 are respectively folded back toward the tab connection pieces 702 facing thereto by a tab shaping device (not shown), and the tab connection pieces 702 facing thereto are covered.

In the tab holding step, the tab 704 is held by the holding device 300 of each of the above embodiments so that the tab 704 and the tab connecting piece 702 are held in a bonded state.

Thereafter, the tab 704 is welded to fix the tab 704 and the tab attaching piece 702 to each other.

The holding device 300 according to the present embodiment can be used to hold the tab 704 and the tab connecting piece 702 in a bonded state. Specifically, when the third jaw 301 is driven to the first preset position by an external driving device and the fourth jaw 302 is driven to the second preset position by an external driving device, the first stopper member 305 and the second stopper member 306 restrict the third jaw 301 and the fourth jaw 302, respectively, so that the third jaw 301 and the fourth jaw 302 are stably maintained in the open state even if the external driving power is removed, and in this state, for example, the top cover attaching step and the tab shaping step can be performed.

After the top cover installation process and the tab shaping process are completed, the external driving device may drive the first restriction member 313 to move in a reverse direction (an upper direction in the drawing) with respect to the third stopper 312 and the second restriction member 315 to move in a reverse direction (an upper direction in the drawing) with respect to the fourth stopper 314, respectively. Thus, the first stopper assembly 305 and the second stopper assembly 306 release the restriction on the third jaw 301 and the fourth jaw 302, respectively, and the third jaw 301 and the fourth jaw 302 move in the first direction toward the inside of the substrate 101 and clamp the tab 704 located on both sides in the longitudinal direction of the battery cell 703, respectively, by the driving of the third elastic assembly 311, and the third jaw 301 and the fourth jaw 302 maintain the clamped state of the tab 704 by the third elastic assembly 311.

Thus, the holding device 300 according to each of the above embodiments can be held in the open state or the closed state without external power, and thus can reliably hold the two tabs 704 of the battery cell 703 after being shaped.

With continued reference to fig. 5, 7, and 8, in some embodiments, in order to facilitate welding of the tab 704 by, for example, a laser, the third clamping jaw 301 may be provided with a first groove portion 338, and the first groove portion 338 exposes a portion of the tab 704 on one side of the battery core 703 in the longitudinal direction. The fourth jaw 302 may have a second groove 339 formed therein, and the second groove 339 may expose a portion of the tab 704 on the other side in the longitudinal direction of the battery core 703. The shape of the first groove 338 and the second groove 339 is not particularly limited as long as the welding locus of the laser welding can be avoided.

By using the holding device 300 of each of the above embodiments in the carrier 100, the third clamping jaw 301 and the fourth clamping jaw 302 are kept in the open state in the cell loading step, the cap attaching step, and the tab shaping step, and thus the cell loading step, the cap attaching step, and the tab shaping step can be performed easily. In the tab holding step and the tab welding step, the first stopper assembly 305 and the second stopper assembly 306 are unlocked by an external driving device, and the third jaw 301 and the fourth jaw 302 are automatically switched to the closed state by the third elastic assembly 311 and held in the closed state, thereby clamping the battery cell 703.

[ partition plate Assembly 400]

FIG. 9 is a schematic diagram illustrating a rear view orientation of an embodiment of a baffle assembly 400. Fig. 10 is a schematic view of a main portion of the diaphragm assembly 400. Fig. 11 is an exploded view of the baffle assembly 400. Referring to fig. 9 to 11, the barrier plate assembly 400 according to the present embodiment includes: a fourth base 401, a partition 402, a first support plate 403, and a second support plate 404.

The separator 402 is used to separate the cells 703 stacked in the thickness direction (vertical direction in the drawing). The length of the separator 402 in the longitudinal direction (left-right direction in the drawing) is longer than the length of the battery cell 703 in the longitudinal direction (left-right direction in the drawing). A first end portion 405 of one end in the width direction (front-rear direction in the drawing) of the spacer 402 is fixed to the fourth base 401. A second end portion 406 at the other end in the width direction of the partition 402 is cantilevered and extends in a direction away from the fourth base 401 (forward direction in the drawing). The first support plate 403 is disposed at one side in the longitudinal direction of the partition 402 and is connected to the second end 406. The second support plate 404 is disposed at the other side in the length direction of the spacer 402 and is connected to the second end 406. The first support plate 403 and the second support plate 404 each protrude at least along one side in the thickness direction of the partition 402. In the case where the separator 402 is interposed between two cells 703 stacked on top of each other, the first support plate 403 is opposed to at least one tab 704 provided on one side in the longitudinal direction of one of the cells 703, and the second support plate 404 is opposed to at least one tab 704 provided on the other side in the longitudinal direction of the cell 703.

According to the separator assembly 400 of the present embodiment, it is possible not only to separate the battery cells 703 stacked in the up-down direction, but also to support the tabs 704 of the battery cells 703 in the left-right direction to assist welding thereof. Specifically, by providing the partition plate 402 having one end fixed to the fourth base 401 and the other end in a cantilever shape, the cell 703 can be partitioned in the vertical direction during stacking of the cell 703, thereby preventing the cell 703 from being crushed. The length of the separator 402 in the longitudinal direction is greater than the length of the battery cell 703, and the first support plate 403 and the second support plate 404 are provided on both sides of the separator 402 in the longitudinal direction, respectively, and the first support plate 403 and the second support plate 404 protrude from at least one side of the separator 402 in the thickness direction, respectively. Therefore, when the tab 704 is wrapped around the tab connection piece 702 and welding is required, the first support plate 403 and the second support plate 404 can be inserted between the tab 704 (tab connection piece 702) and one side of the body of the battery cell 703 in the longitudinal direction, respectively, and the tab 704 (tab connection piece 702) can be supported during welding. This ensures that the reference positions of the tabs 704 are always kept consistent when the tabs 704 are welded, thereby ensuring the welding quality of the tabs 704.

The spacer 402 is, for example, a thin plate, and the thickness of the spacer 402 is not particularly limited, and may be set according to the thickness of the conventional spacer assembly 400. The fourth base 401 has a block shape, and the first end 405 of the spacer 402 is fixed to the fourth base 401, thereby increasing the strength of the spacer 402 and thus the support strength of the first and second support plates 403 and 404. The spacer 402 may be formed by, for example: a screw lock, a clip clamp, or the like is fixed to the fourth base 401 in a known fixing manner. Further, the partition 402 may be directly and integrally formed with the fourth base 401.

The first support plate 403 and the second support plate 404 are each formed in a thin plate shape at a portion provided at the first end 405 of the spacer 402. The height of the first support plate 403 and the second support plate 404 protruding in the thickness direction of the separator 402 is not particularly limited as long as the welding region of the tab 704 can be covered, and may be slightly smaller than the thickness of the main body of the electric core 703, for example.

With reference to fig. 11, an example in which two cells 703 are stacked in the thickness direction (vertical direction in the drawing) will be described. In some embodiments, in the case where the tabs 704 on one side in the length direction of the two cells 703 are welded to the tab attachment pieces 702, respectively, the first support plate 403 and the second support plate 404 may protrude along both sides in the thickness direction of the separator 402, respectively, and in the case where the separator 402 is located between the two stacked cells 703, the first support plate 403 is opposed to the tabs 704 on one side in the length direction of the cells 703 stacked on each other, and the second support plate 404 is opposed to the tabs 704 on the other side in the length direction of the cells 703 stacked on each other, respectively. That is, in the present embodiment, the middle portion in the up-down direction of the first support plate 403 and the second end portion 406 of the spacer 402 are connected. Similarly, the middle portion of the second support plate 404 in the up-down direction is also connected to the second end portion 406. Therefore, the tab 704 of the two cells 703 stacked on top of each other can be covered by one first support plate 403 and one second support plate 404.

In other embodiments, for example, in order to adapt to different tab welding processes, the first support plate 403 and the second support plate 404 may protrude only toward the upper side of the separator 402, or only toward the lower side of the separator 402, or one of the first support plate 403 and the second support plate 404 may protrude toward the upper side of the separator 402 and the other of the first support plate 403 and the second support plate 404 may protrude toward the lower side, as needed.

With continued reference to fig. 9 and 10, in some embodiments, in order to improve the supporting strength of the entire separator assembly 400, one end of the first support plate 403 in the longitudinal direction (front-rear direction in the drawings) is connected to the fourth base 401, and the other end of the first support plate 403 in the longitudinal direction is connected to the second end 406 of the separator 402. Specifically, the length of the first support plate 403 covers the width (front-rear direction in the drawing) of the partition 402 and at least part of the fourth base 401. The first support plate 403 extends from the fourth base 401 toward the second end 406 of the partition 402, and is connected to the fourth base 401 and the partition 402, respectively. This can not only improve the support strength of the first support plate 403 but also effectively improve the support strength of the entire separator assembly 400. Similarly, one end of the second support plate 404 in the longitudinal direction may be connected to the fourth susceptor 401, and the other end of the second support plate 404 in the longitudinal direction may be connected to the second end 406 of the spacer 402. This can increase the support strength of the second support plate 404 and the overall support strength of the diaphragm assembly 400. Further, the overall support of the baffle plate assembly 400 can also be made more balanced.

In other embodiments, for example, in order to adapt to different structures of the battery cells 703 or different structures of the carrier 100, one end of the first support plate 403 and the second support plate 404 in the length direction may be connected to the fourth base 401, the other end of the first support plate in the length direction may be connected to the second end 406, and the other end of the first support plate and the second support plate may be connected to only the second end 406 of the partition 402.

With continuing reference to fig. 11 and with additional reference to fig. 9 and 10, in some embodiments, to reduce the difficulty of processing the components and the processing cost, the first support plate 403 is detachably connected to the fourth base 401 and the partition 402. Specifically, for example, the first support plate 403 may be detachably connected to the fourth base 401 and the partition plate 402 by various known detachable connection methods such as screw locking, snap fastening, and clamping with a jaw. By detachably connecting the first support plate 403, the fourth base 401, and the partition plate 402 to each other, these members can be processed into substantially regular shapes, respectively, thereby reducing the processing difficulty of each member and the processing cost. In addition, other processes may be performed as needed, for example, the separator 402 may be polished to increase the surface roughness thereof, so as to reduce the friction between the separator 402 and the battery cell 703. Further, the first support plate 403 may be subjected to a quenching process to increase its surface hardness and the like. Similarly, the second support plate 404 may be detachably connected to the fourth base 401 and the partition 402, respectively, as with the first support plate 403.

In other embodiments, for example, in order to meet the processing requirements of different components, one of the first support plate 403 and the second support plate 404 may be detachably connected to the fourth base 401 and the partition 402, and the other of the first support plate 403 and the second support plate 404 may be integrally formed with the fourth base 401 and the partition 402.

With continued reference to fig. 9 and 10, in some embodiments, in a case where the first support plate 403 is detachably connected to the partition 402, in order to further increase the supporting strength of the first support plate 403, the first support plate 403 may be provided with a first reinforcing rib 407 (shown by a dotted line here because it is hidden with reference to fig. 10) on a surface thereof opposite to the partition 402, and the first reinforcing rib 407 abuts against the partition 402. Specifically, the first support plate 403 and the first reinforcing rib 407 are integrally formed in, for example, a T shape, and the first reinforcing rib 407 is provided at the middle portion in the width direction (up-down direction) of the first support plate 403 and extends in the longitudinal direction of the first support plate 403. The thickness of the first rib 407 is substantially the same as the thickness of the spacer 402, and thus the first support plate 403 can be detachably connected to the spacer 402 in a state where the first rib 407 and the spacer 402 are substantially flush with each other in the vertical direction. Similarly, the second support plate 404 may be provided with second ribs 408 on the surface facing the spacer 402, as in the first support plate 403, and the second ribs 408 may abut against the spacer 402.

With continued reference to fig. 11, and with additional reference to fig. 9 and 10, in some embodiments, the baffle assembly 400 may further include a fifth base 409, the fourth base 401 being floatably mounted to the fifth base 409 along a length of the baffle 402. Specifically, since the separator 402, the first support plate 403, and the second support plate 404 are each cantilevered with respect to the fourth base 401, when the tab 704 of the cell 703 (the tab connection piece 702 of the top cover) is pressed together, the cantilever ends of the separator 402, the first support plate 403, and the second support plate 404 are subjected to pressure as a whole. In the case where the pressed positions of the first support plate 403 and the second support plate 404 are deviated from the mounted positions in the left-right direction due to assembly or the like, the cantilever portions of the first support plate 403 and the second support plate 404 may be bent. In this case, by using for mounting: the fourth base 401 of the separator 402, the first support plate 403, and the second support plate 404 is provided so as to be floatable in the longitudinal direction of the separator 402 (i.e., in the direction in which the fourth base is pressed), and the entire fourth base 401, the separator 402, the first support plate 403, and the second support plate 404 can be adaptively adjusted according to the position at which the tab 704 of the battery cell 703 is pressed by, for example, a welding device. This can prevent the first support plate 403 and the second support plate 404 from being deformed by bending.

As a specific example of making the fourth base 401 floatable along the length of the partition 402, for example, the partition assembly 400 may further include a fifth guide assembly 410, the fifth guide assembly 410 having: a fifth guide 411 and a sixth mounting member 412. Wherein the fifth guide 411 extends in a longitudinal direction (left-right direction) of the partition 402. The sixth mounting member 412 is movable along the fifth guide 411. One of the fifth guide 411 and the sixth mount 412 is mounted to the fifth base 409. The other of the fifth guide 411 and the sixth mount 412 supports the fourth base 401. Specifically, as the fifth guide unit 410, for example, a linear guide unit may be selected, and a linear guide may be used as the fifth guide 411 and a slider may be used as the sixth mounting unit 412. A linear slide as the fifth guide 411 is, for example, mounted to the fifth base 409. The fourth base 401 is mounted to the sixth mounting part 412 and supported by the sixth mounting part 412. Thereby, the fourth base 401 is floatable with respect to the fifth base 409 in the longitudinal direction of the partition 402.

In order to make the fourth base 401 to be maintained at a predetermined position along the length direction of the spacer 402 in the initial state, in some embodiments, the spacer assembly 400 may further include a fourth elastic member 413, and the fourth elastic member 413 applies a force to the fourth base 401 in a direction in which the fourth base 401 floats. Specifically, for example, the fourth elastic members 413 may include two, and the two fourth elastic members 413 are respectively disposed at both sides of the fourth base 401 along the floating direction of the fourth base 401. The fourth elastic member 413 may be selected from known elastic devices such as a spring and a hydraulic buffer, and the fourth elastic member 413 may be attached to both sides of the fifth base 409 in the longitudinal direction, for example, and may apply a force to the fourth base 401 along the longitudinal direction of the fifth base 409. By providing the two fourth elastic members 413, it is possible to achieve that the fourth base 401, the separator 402, the first support plate 403, and the second support plate 404 can be reset to the initial positions after the external force from, for example, a welding apparatus is removed, even when the fourth base 401, the separator 402, the first support plate 403, and the second support plate 404 are adjusted slightly adaptively as they are pressed, so that it is possible to ensure that the first support plate 403 and the second support plate 404 can be located on both sides in the longitudinal direction of the electric core 703 when the separator 402 is located between two stacked electric cores 703, and interference between the first support plate 403 and the second support plate 404 and the electric core 703 or the tab 704 is prevented.

The operation of the diaphragm assembly 400 will be described below. In the production process of a power battery which needs to be welded with a top cover 701 after a plurality of battery cells 703 are stacked, the processes before the tab connecting piece 702 and the tab 704 are welded by laser generally include a battery cell feeding process, a separator inserting process, a top cover mounting process, a tab shaping process, a tab holding process and the like.

In the cell loading step, first, the cell 703 is loaded to the cell holder 102 by, for example, a robot or the like.

After the battery cells 703 are fed to the cell holder 102, the separator assembly 400 may be driven by an external driving device to slide along the sixth guide assembly 414, and the separator 402 is located above the first loaded battery cell 703. In a state where the separator 402 is located above the first cell 703, the first support plate 403 and the second support member are located on both sides of the cell 703 in the longitudinal direction.

In the top cover mounting step, first, before the top cover is mounted on the battery cell 703, the tab 704 extends outward of the main body of the battery cell 703 in the first direction with respect to the main body of the battery cell 703. In the top cover attaching step, after the top cover is attached to the front end of the battery cell 703 by the clamping device 200, the tab connection piece 702 located at one end in the longitudinal direction of the top cover is attached to the outer side of one of the first support plate 403 and the second support plate 404, and the tab connection piece 702 located at the other end in the longitudinal direction of the top cover is attached to the outer side of the other of the first support plate 403 and the second support plate 404 in the width direction of the body of the battery cell 703.

After the top cover installation process, another cell 703 is loaded. At this time, the separator 402 is located between the two stacked cells 703.

In the tab shaping step, tabs 704 on both sides in the width direction of the two stacked electric cells 703 are folded back toward the tab connection pieces 702 facing the tabs by a tab shaping device (not shown), and the tab connection pieces 702 facing the tabs are covered with the tabs.

In the tab holding step, tab 704 is held by holding device 300 so that tab 704 and tab connecting piece 702 are in a state of being bonded to each other. In a state where the tab 704 and the tab connecting piece 702 are bonded to each other, the tab 704 and the tab connecting piece 702 are supported integrally by the first support plate 403 and the second support plate 404, respectively.

Thereafter, the tab 704 is welded to fix the tab 704 and the tab attaching piece 702 to each other.

According to the carrier 100 of the present embodiment, since the separator assembly 400 of each of the above-described embodiments is provided, for example, when the tabs provided on both sides in the longitudinal direction of the battery cell and the tab connection pieces 702 provided on both sides in the longitudinal direction of the top cover are welded, the tabs 704 (tab connection pieces 702) can be supported, and when the tabs 704 are welded, the reference positions of the tabs 704 are always kept consistent, thereby ensuring the welding quality of the tabs 704.

Accordingly, according to the carrier 100 of the present embodiment, the tabs provided on both sides in the longitudinal direction of the battery cell and the tab connection pieces 702 provided on both sides in the longitudinal direction of the top cover can be maintained in a stable and reliable contact state with each other without external power, and thus, tab laser welding can be performed in a line, for example.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present implementation. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present embodiments have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A tab welding carrier (100) for mounting and holding a battery core (703) and a top cover (701) of a power battery,

comprising: a substrate (101) provided with a first holding portion (103) for holding a first cell (703a) and a first top cover (701a) corresponding to the first cell (703a), on one side in a third direction of the substrate (101);

the first holding portion (103) includes: a cell holder (102) for holding the first cell (703a), a clamping device (200) for clamping the first cap (701a), and a holding device (300) for holding a contact state between a tab (704) of the first cell (703a) and a tab connection piece (702) of the first cap (701 a);

wherein the clamping device (200) is provided on one side of the cell holding section (102) in the third direction, and has:

a first jaw (201) and a second jaw (202), the first jaw (201) and the second jaw (202) being drivable to approach or move away from each other along a first direction orthogonal to the third direction,

a first elastic member (205) configured to urge the first jaw (201) and the second jaw (202) toward each other in the first direction so that the first jaw (201) and the second jaw (202) are brought closer to each other;

wherein the holding device (300) has:

a third jaw (301) that is located on one side of the cell holding portion (102) in the first direction and is movable in the first direction,

a fourth clamping jaw (302) which is located on the other side of the cell holding part (102) in the first direction, is opposite to the third clamping jaw (301), and is movable in the first direction,

a third elastic member (311) that is provided to urge the third jaw (301) and the fourth jaw (302) so that the third jaw (301) and the fourth jaw (302) move toward the cell holder (102) in the first direction, respectively,

a first stop assembly (305) arranged to limit movement of the third jaw (301) in the first direction towards the cell holder (102) when the third jaw (301) is moved in the first direction towards the outside of the cell holder (102) to a first preset position,

a second stop assembly (306) configured to limit movement of the fourth jaw (302) in the first direction toward the cell holder (102) when the fourth jaw (302) moves in the first direction toward an outside of the cell holder (102) to a second preset position.

2. The carrier (100) for tab welding according to claim 1, wherein the first holding portion (103) further comprises: a separator assembly (400), the separator assembly (400) being disposed on the other side of the cell holder (102) in the third direction, and being drivable in the third direction to project above the cell holder (102) or to exit from above the cell holder (102).

3. The tab welding carrier (100) according to claim 1, wherein a second holding portion (105) for holding a second cell (703b) and a second top cover (701b) corresponding to the second cell (703b) is provided on the other side of the substrate (101) in the third direction, and the second holding portion (105) includes: another one of the cell holders (102), another one of the clamping devices (200), and another one of the holding devices (300); wherein the content of the first and second substances,

the other clamping device (200) is arranged on the other side of the other cell holding part (102) in the third direction;

the third jaw (301) and the fourth jaw (302) of the other of the holding devices (300) are located on both sides of the other of the cell holding portions (102) in the first direction, respectively.

4. The tab welding carrier (100) according to claim 2, wherein a second holding portion (105) for holding a second cell (703b) and a second top cover (701b) corresponding to the second cell (703b) is provided on the other side of the substrate (101) in the third direction;

the second holding portion (105) includes: another one of the cell holders (102), another one of the clamping devices (200), another one of the holding devices (300), and another one of the separator assemblies (400);

wherein the other clamping device (200) is provided on the other side of the other cell holding part (102) in the third direction;

wherein the third jaw (301) and the fourth jaw (302) of the other of the holding devices (300) are located on both sides of the other of the cell holding portions (102) in the first direction, respectively;

the other separator assembly (400) is disposed on one side of the other cell holding portion (102) in the third direction.

5. The carrier (100) for tab welding according to claim 4, wherein one of the separator assemblies (400) of the first holding portion (103) and the other separator assembly (400) of the second holding portion (105) at least partially overlap in a vertical direction.

6. The carrier (100) for tab welding according to claim 1, wherein the clamping device (200) further comprises: a first driving member (204), wherein the first driving member (204) is located between the first clamping jaw (201) and the second clamping jaw (202) and is in transmission connection with the first clamping jaw (201) and the second clamping jaw (202), and the first driving member (204) is driven to extend or retract along a second direction orthogonal to the first direction;

the first driving piece (204) is provided with a first guiding part (209), the first guiding part (209) is formed to enable the first clamping jaw (201) and the second clamping jaw (202) to be away from each other along the first direction when the first driving piece (204) is driven to extend, and is formed to allow the first clamping jaw (201) and the second clamping jaw (202) to be close to each other along the first direction when the first driving piece (204) is driven to retract.

7. The carrier (100) for tab welding according to claim 1, further comprising:

a second driving member (320) having one end connected to the third jaw (301) and the other end extending toward the outside of the substrate (101) along the first direction;

and a third driving member (321) having one end connected to the fourth jaw (302) and the other end extending toward the outside of the substrate (101) along the first direction.

8. The carrier (100) for tab welding according to claim 1 or 7,

the first stop assembly (305) has: a third stopper (312) and a first restricting member (313), wherein the third stopper (312) is disposed on the substrate (101), the first restricting member (313) is connected to the third clamping jaw (301), and when the third clamping jaw (301) moves to the first preset position in the first direction toward the outer side of the cell holding part (102), the first restricting member (313) moves in a direction toward the third stopper (312) and is stopped by the third stopper (312);

the second stop assembly (306) has: a fourth stopper (314) and a second stopper (315), wherein the fourth stopper (314) is disposed on the substrate (101), the second stopper (315) is connected to the fourth jaw (302), and when the fourth jaw (302) moves in the first direction to the second preset position toward the outside of the cell holding portion (102), the second stopper (315) moves in a direction toward the fourth stopper (314) and is stopped by the fourth stopper (314).

9. The carrier (100) for tab welding according to claim 2 or 4, characterized in that said separator assembly (400) comprises:

a fourth base (401);

a separator (402), a length of the separator (402) in a longitudinal direction being greater than a length of the battery cell (703), a first end portion (405) of one end of the separator (402) in the longitudinal direction being fixed to the fourth base (401), and a second end portion (406) of the other end of the separator (402) in the longitudinal direction being cantilevered and extending in a direction of the battery cell holder (102);

a first support plate (403) provided on one side of the partition plate (402) in the longitudinal direction and connected to the second end (406);

a second support plate (404) disposed at the other side in the longitudinal direction of the partition plate (402) and connected to the second end portion (406);

the first support plate (403) and the second support plate (404) respectively protrude at least along one side of the separator (402) in the thickness direction, the first support plate (403) is opposite to a tab (704) on one side of the battery cell (703) in the length direction, and the second support plate (404) is opposite to a tab (704) on the other side of the battery cell (703) in the length direction.

10. The carrier (100) for tab welding according to claim 9, wherein the separator assembly (400) further comprises:

a fifth base (409), the fourth base (401) floatably mounted to the fifth base (409) along the first direction;

a fourth elastic member (413), the fourth elastic member (413) urging the fourth base (401) in the first direction.

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