Battery welding tooling and battery production system

Abstract

The application relates to the technical field of battery tooling, and discloses a battery welding tool and a battery production system, which comprise at least two constraint pieces, wherein the two constraint pieces are respectively used for abutting against two ends of a battery cell so as to clamp the battery cell between the two constraint pieces; the constraint pieces are provided with avoiding grooves for avoiding clamping jaws; and the clamping jaws are used for grabbing the battery cell. When the battery welding tool is used, the constraint pieces are not interfered with by the clamping jaws during clamping of the battery cell, so that the clamping jaws can be used to clamp the battery cell first, then the two constraint pieces are moved away from each other to release the battery cell, and the clamping jaws can be used to complete grabbing and discharging of the battery cell. When the clamping jaws grab the battery cell, the two constraint pieces clamp the battery cell, so that the position of the battery cell does not change, and the battery cell is prevented from being bumped and damaged when the clamping jaws grab the battery cell.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a battery welding fixture and a battery production system. Background Technology

[0002] A battery consists of a casing and battery cells housed within the casing. For a battery cell formed by multiple electrode assemblies, the tabs of the electrode assemblies are connected together via adapter plates. During the welding of the adapter plates, the electrode assemblies are arranged sequentially and fixed by fixtures to prevent misalignment of the electrode assemblies, which could affect the welding of the adapter plates. After the electrode assemblies and adapter plates are welded together to form the battery cell, the battery cell needs to be gripped by chucks and transferred to the next station for subsequent assembly operations. However, since the battery cell is constrained by the fixtures, the constraint on the battery cell must be released before using the chucks to prevent the chucks from colliding with the fixtures when moving downwards to grip the battery cell. However, since the electrode assemblies are only connected by adapter plates, the position of the battery cell may change after the constraint of the fixtures is removed, potentially damaging the battery cell when the chucks move downwards to grip it.

[0003] Therefore, how to solve or improve the problem that the grippers may damage the battery cells due to changes in the position of the battery cells when using grippers in related technologies has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, this application provides a battery welding fixture and a battery production system to solve or improve the problem that the grippers may damage the battery cells due to changes in the position of the cells when using grippers to pick them up.

[0005] In a first aspect, this application provides a battery welding fixture, including at least two constraint members, wherein the two constraint members are respectively used to abut against both ends of a battery cell along a first direction to clamp the battery cell between the two constraint members, and the constraint members are provided with clearance grooves for avoiding grippers, the grippers being used to grasp the battery cell.

[0006] Optionally, the constraint includes: At least two clamping members are provided, each clamping member is used to abut against the end face of the battery cell, and the clearance groove is formed between two adjacent clamping members.

[0007] Optionally, the constraint further includes a connector, through which two adjacent clamping members are connected.

[0008] Optionally, the side of each clamping member facing away from the battery cell is connected to the side wall of the connector.

[0009] Optionally, the battery welding fixture further includes: A driving element, connected to the connector, and adapted to drive the connector to move closer to or away from the end face of the battery cell.

[0010] Optionally, the battery cell includes a plurality of electrode assemblies arranged sequentially along a first direction, each electrode assembly having a tab, and adjacent tabs being adapted to be electrically connected via an adapter plate. The battery welding fixture further includes: A support member is adapted to be disposed between two adjacent tabs and is used to support the adapter piece.

[0011] Optionally, the support member includes: An abutment for contacting the side of the battery cell; A support plate is provided between two adjacent tabs to support the adapter piece, and the support plate is connected to the abutment member.

[0012] Optionally, the support member further includes: A tab, connected to the abutment and / or the support plate, is adapted to be inserted between two adjacent electrode assemblies of the battery cell.

[0013] Optionally, at least two inserts are provided, and each insert can be inserted between two adjacent electrode assemblies.

[0014] Secondly, this application also provides a battery production system, including any of the battery welding fixtures described above.

[0015] This application provides a battery welding fixture, comprising at least two constraint members, each of which abuts against both ends of a battery cell to clamp the cell between the two constraint members. The constraint members are provided with clearance grooves to avoid grippers, which are used to grasp the battery cell. Because the constraint members have clearance grooves, they do not interfere with the grippers when the cell is grasped. Therefore, the cell can be grasped first, and then the two constraint members can be moved away from each other to release the cell, allowing the grippers to complete the unloading process. Since the two constraint members clamp the cell tightly when it is grasped, the cell's position does not change, preventing damage to the cell when the grippers are used. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the structure of a battery welding fixture according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 1. Constraint component; 11. Clamping component; 111. Clearance groove; 12. Connecting component; 2. Support component; 21. Abutment component; 22. Support plate; 23. Insert; 3. Battery cell; 31. Electrode assembly; 4. Electrode tab; 5. Gripper. Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The following is combined with Figure 1 This describes an embodiment of the present application.

[0020] According to embodiments of this application, in one aspect, a battery welding fixture is provided, such as... Figure 1 As shown, it includes at least two constraint members 1, wherein the two constraint members 1 are respectively used to abut against the two ends of the battery cell 3 in the first direction X, so as to clamp the battery cell 3 between the two constraint members 1. The constraint members 1 are provided with a relief groove 111 for avoiding the gripper 5, and the gripper 5 is used to grasp the battery cell 3.

[0021] With the two constraint members 1 abutting against both ends of the battery cell 3, the two constraint members 1 clamp the battery cell 3. Because the constraint members 1 are provided with clearance grooves 111, when the gripper 5 is used to grip the battery cell 3, the constraint members 1 will not interfere with the gripper 5. Therefore, the gripper 5 can be used to grip the battery cell 3 first, and then the two constraint members 1 can be moved away from each other to release the battery cell 3. The gripper 5 can then be used to pick up the battery cell 3 and complete the unloading process. Since the two constraint members 1 clamp the battery cell 3 when the gripper 5 picks it up, the position of the battery cell 3 will not change, avoiding damage to the battery cell 3 when using the gripper 5 to pick it up.

[0022] Specifically, the battery cell 3 includes multiple electrode assemblies 31, which are arranged sequentially along a first direction X. Two constraint members 1 are provided, located at opposite ends of the battery cell 3 along the first direction X. The two constraint members 1 can move closer to or further away from each other along the first direction X. When the two constraint members 1 move closer to each other, they can abut against opposite ends of the battery cell 3 along the first direction X to clamp the electrode assemblies 31 of the battery cell 3 along the first direction X. When the two constraint members 1 move further away from each other, they can move away from opposite ends of the battery cell 3 along the first direction X to release the clamping of the battery cell 3.

[0023] During the welding of the adapter piece, each electrode assembly 31 is placed between two constraint members 1 and arranged sequentially along the first direction X. The two constraint members 1 are brought closer together until each electrode assembly 31 of the battery cell 3 is clamped along the first direction X. The adapter piece is then welded to the tabs 4 of each electrode assembly 31. After welding, the gripper 5 is inserted into the clearance groove 111 on the constraint member 1 and the battery cell 3 is gripped along the first direction X. Since the constraint members 1 clamp each electrode assembly 31 along the first direction X, misalignment between the electrode assemblies 31 is prevented, thus preventing changes in the position of the battery cell 3 and avoiding damage to the battery cell 3 by the gripper 5. After the gripper 5 grips the battery cell 3, the two constraint members 1 are moved away from each other to release the clamping of the battery cell 3. The gripper 5 can then be used to grip the battery cell 3 to complete the unloading process.

[0024] In one embodiment, such as Figure 1 As shown, the constraint member 1 includes at least two clamping members 11, each clamping member 11 being used to abut against the end face of the battery cell 3 along the first direction X, wherein an avoidance groove 111 is formed between two adjacent clamping members 11.

[0025] For the two constraint members 1 located at both ends of the battery cell 3, each of its clamping members 11 can move closer to or away from the battery cell 3 along the first direction X. When each clamping member 11 is in contact with the end face of the battery cell 3, each clamping member 11 simultaneously clamps the battery cell 3, resulting in more points of contact and more stable clamping.

[0026] When each constraint member 1 clamps the battery cell 3, the gripper 5 can extend into the clearance groove 111 formed between two adjacent gripping members 11 when clamping the battery cell 3, so as to avoid the constraint member 1 interfering with the gripper 5.

[0027] Specifically, the constraint member 1 includes two clamping members 11, with an avoidance groove 111 formed between the two clamping members 11.

[0028] The clamping component 11 can be a vertically arranged rod.

[0029] In one embodiment, such as Figure 1 As shown, the constraint member 1 includes at least two clamping members 11 and a connecting member 12. One end of the connecting member 12 is connected to one clamping member 11 and the other end is connected to another clamping member 11, so that two adjacent clamping members 11 are connected by the connecting member 12.

[0030] In this way, when each clamping member 11 abuts against the end face of the battery cell 3, the overall strength of the constraint member 1 is enhanced because two adjacent clamping members 11 are connected by the connector 12, making the clamping of the battery cell 3 by the constraint member 1 more stable and reliable.

[0031] Furthermore, when moving each clamping member 11, the connecting member 12 can be moved, which simultaneously moves the clamping member 11 connected to the connecting member 12, making the operation more convenient.

[0032] Specifically, the constraint member 1 includes two clamping members 11, which are connected by a connector 12.

[0033] The connector 12 can be a horizontally arranged crossbar.

[0034] In one embodiment, such as Figure 1 As shown, the side of each clamping member 11 facing away from the battery cell 3 is connected to the side wall of the connector 12. Therefore, when moving each clamping member 11, only the connector 12 needs to be moved to move all the clamping members 11 closer to or further away from the battery cell 3. This makes operation more convenient.

[0035] Furthermore, since the sidewall of the connector 12 is connected to the side of the clamping member 11 away from the battery cell 3, when each clamping member 11 abuts against the end face of the battery cell 3, there is a gap between the connector 12 and the end face of the battery cell 3, so that the connector 12 will not intrude into the clearance groove 111. After the claw 5 is inserted into the clearance groove 111, it can extend into the gap between the connector 12 and the end face of the battery cell 3, avoiding interference between the connector 12 and the claw 5, and making the space in which the claw 5 can extend larger.

[0036] In one embodiment, such as Figure 1 As shown, the battery welding fixture also includes a driving component, which is connected to the connecting component 12 and can drive the connecting component 12 to move along the first direction X to approach or move away from the end face of the battery cell 3. Each driving component is connected to one connecting component 12. Thus, when the battery cell 3 needs to be clamped, each electrode assembly 31 is positioned between two constraint components 1. The driving component is used to drive the corresponding connecting component 12 to move, thereby driving the corresponding constraint component 1 to move, so that the two constraint components 1 move closer together, thus clamping the battery cell 3. When it is necessary to release the clamping of the battery cell 3, the driving component is used to drive the corresponding connecting component 12 to move, thereby driving the corresponding constraint component 1 to move, so that the two constraint components 1 move away from each other, thus releasing the clamping of the battery cell 3, making the operation more convenient.

[0037] Specifically, two constraint members 1 are provided, each including a connector 12 and two clamping members 11. Two driving members are also provided, one connected to the connector 12 of one constraint member 1, and the other connected to the connector 12 of the other constraint member 1. When the driving member drives the connector 12 to move along the first direction X, it can drive the two clamping members 11 to move along the first direction X, thereby moving closer to or away from the battery cell 3.

[0038] The driving component can be a pneumatic cylinder or an electric cylinder.

[0039] In one embodiment, such as Figure 1 As shown, the battery cell includes multiple electrode assemblies 31, which are arranged sequentially along a first direction. Each electrode assembly 31 is provided with a tab 4, and two adjacent tabs 4 are adapted to be electrically connected through an adapter plate. The adapter plate is welded to two tabs 4 respectively.

[0040] The battery welding fixture also includes a support 2, which is adapted to be disposed between two adjacent tabs 4 and is used to support the adapter piece.

[0041] When welding the adapter piece, each electrode assembly 31 is placed between two constraint members 1 and arranged sequentially along the first direction X. The two constraint members 1 are brought closer together until each electrode assembly 31 of the cell 3 is clamped along the first direction X. The support member 2 is placed between two adjacent tabs 4, and then both sides of the adapter piece are respectively brought into contact with the two adjacent tabs 4. At this time, the adapter piece is located on the support member 2. In this way, when the adapter piece is welded to the tabs 4, the support member 2 can support the adapter piece and prevent the downward pressure generated during welding from acting entirely on the tabs 4 and the electrode assembly 31.

[0042] Moreover, when the support member 2 is placed between two adjacent tabs 4, the support member 2 contacts the two adjacent tabs 4 respectively, which also provides a certain support for the tabs 4, making it easier to weld the adapter piece to the tabs 4.

[0043] In one embodiment, such as Figure 1 As shown, the support member 2 includes an abutment member 21 and a support plate 22. The abutment member 21 is used to abut against the side of the battery cell 3, and the support plate 22 is used to support the adapter piece between two adjacent tabs 4. The support plate is connected to the abutment member 21.

[0044] When welding the adapter piece, each electrode assembly 31 is placed between two constraint members 1 and arranged sequentially along the first direction X. The two constraint members 1 are brought closer together until each electrode assembly 31 of the cell 3 is clamped along the first direction X. Then, the support member 2 is moved so that the support plate 22 is inserted between two adjacent tabs 4 until the abutment abuts against the side of the cell 3. Then, both sides of the adapter piece are respectively brought into contact with the two adjacent tabs 4. At this time, the adapter piece is located on the support plate 22. In this way, when welding the adapter piece to the tabs 4, the support plate 22 can support the adapter piece and prevent the downward pressure generated during welding from acting entirely on the tabs 4 and the electrode assembly 31. The abutment member 21 can position the support plate 22 by abutting against the side of the cell 3.

[0045] The abutment 21 can be a vertically arranged plate, while the support plate 22 is arranged horizontally. The abutment 21 is perpendicular to the support plate 22 and is connected as one piece.

[0046] In some embodiments, two support members 2 are provided, and are respectively located on both sides of the battery cell 3. When the abutment members 21 of the two support members abut against both sides of the battery cell 3, the battery cell 3 can be held between the abutment members 21 of the two support members, thereby further constraining and fixing the battery cell 3.

[0047] In some embodiments, a support member 2 has multiple support plates 22, and the number of support plates 22 depends on the number of electrode assemblies 31. One support plate 22 is required between the tabs 4 of every two adjacent electrode assemblies 31, so the number of support plates 22 is one less than the number of electrode assemblies 31.

[0048] In one embodiment, such as Figure 1 As shown, the support member 2 also includes a insert 23, which is connected to the abutment member 21 or the support plate 22. The insert 23 is used to insert between two adjacent electrode assemblies 31 of the battery cell 3.

[0049] Specifically, during the welding of the adapter piece, each electrode assembly 31 is placed between two constraint members 1 and arranged sequentially along the first direction X. The two constraint members 1 are brought closer together until each electrode assembly 31 of the battery cell 3 is clamped along the first direction X, and the support member 2 is connected to the battery cell 3. Then, the insert 23 is inserted between two adjacent electrode assemblies 31 of the battery cell 3, while the support plate 22 extends between two adjacent tabs 4 until the abutment member 21 abuts against the side of the battery cell 3. Then, both sides of the adapter piece contact the two adjacent tabs 4 respectively. At this time, the adapter piece is located on the support plate 22. Thus, when welding the adapter piece to the tabs 4, the support plate 22 can support the adapter piece, preventing the downward pressure generated during welding from acting entirely on the tabs 4 and electrode assemblies 31. Because the insert 23 is clamped between two adjacent electrode assemblies 31, it fixes the abutment member 21 and the support plate 22, making the support of the support member 2 more stable and the support effect more reliable.

[0050] The insert 23 is integrated with the abutment or support plate 22.

[0051] In some embodiments, the insert 23 is connected to both the abutment and the support plate 22. This provides better fixation for the abutment and the support plate 22, making the support 2 more stable and the positioning more reliable.

[0052] In one embodiment, such as Figure 1 As shown, at least two inserts 23 are provided, and each insert 23 can be inserted between two adjacent electrode assemblies 31. This increases the number of inserts 23 to fix the support 2, making the support 2 more stable and the positioning effect more reliable.

[0053] It is worth noting that, in order to facilitate the insertion of the insert 23, the insert 23 can be inserted between two adjacent electrode assemblies 31 first, and then the two constraint members 1 can be brought closer to each other until each electrode assembly 31 of the cell 3 is clamped along the first direction X.

[0054] In some embodiments, a support member 2 has multiple inserts 23, the number of which depends on the number of electrode assemblies 31. One insert 23 can be clamped between every two adjacent electrode assemblies 31, so the number of support plates 22 can be one less than the number of electrode assemblies 31.

[0055] According to an embodiment of this application, another aspect provides a battery production system including any of the battery welding fixtures described above. The technical effects of this battery production system are consistent with those of the battery welding fixtures.

[0056] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A battery welding fixture, characterized in that, It includes at least two constraint members (1), wherein the two constraint members (1) are respectively used to abut against the two ends of the battery cell (3) along the first direction to clamp the battery cell (3) between the two constraint members (1), and the constraint members (1) are provided with a relief groove (111) for avoiding the gripper (5), and the gripper (5) is used to grasp the battery cell (3).

2. The battery welding fixture according to claim 1, characterized in that, The constraint (1) includes: At least two clamping members (11) are provided, each clamping member (11) being used to abut against the end face of the battery cell (3), and the clearance groove (111) is formed between two adjacent clamping members (11).

3. The battery welding fixture according to claim 2, characterized in that, The constraint member (1) further includes a connector (12), through which two adjacent clamping members (11) are connected.

4. The battery welding fixture according to claim 3, characterized in that, Each of the clamping members (11) is connected to the side wall of the connector (12) on the side away from the battery cell (3).

5. The battery welding fixture according to claim 4, characterized in that, The battery welding fixture also includes: A drive unit, connected to the connector (12), and adapted to drive the connector (12) to move closer to or away from the end face of the cell (3).

6. The battery welding fixture according to claim 1, characterized in that, The battery cell includes a plurality of electrode assemblies (31) arranged sequentially along a first direction. Each electrode assembly (31) is provided with a tab (4). Two adjacent tabs (4) are adapted to be electrically connected through an adapter plate. The battery welding fixture further includes: The support member (2) is adapted to be disposed between two adjacent tabs (4) and is used to support the adapter piece.

7. The battery welding fixture according to claim 6, characterized in that, The support member (2) includes: Abutting member (21) is used to abut against the side of the battery cell (3); A support plate (22) is provided between two adjacent tabs (4) to support the adapter piece. The support plate (22) is connected to the abutment (21).

8. The battery welding fixture according to claim 7, characterized in that, The support member (2) also includes: Insert (23), connected to the abutment and / or the support plate (22), the insert (23) being adapted to be inserted between two adjacent electrode assemblies (31) of the cell (3).

9. The battery welding fixture according to claim 8, characterized in that, At least two inserts (23) are provided, and each insert (23) can be inserted between two adjacent electrode assemblies (31).

10. A battery production system, characterized in that, include: The battery welding fixture according to any one of claims 1 to 9.

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