Clamping device

Abstract

The utility model relates to a clamping device which comprises a mounting plate. The supporting unit comprises a supporting body, the supporting body is movably connected with the mounting plate, and the supporting body is driven to support the battery cell needing to be clamped in the first direction; the number of the battery cells is at least two, and the at least two battery cells are sequentially arranged along a second direction; the first clamping unit comprises a first limiting plate and a first clamping side plate, the first limiting plate is fixedly arranged on the mounting plate, and the first clamping side plate is driven to move in the second direction and can abut against the first positioning surface of the battery cell. Compared with the prior art, the clamping device disclosed by the utility model has a relatively large compatible range, so that rapid model change can be realized aiming at different battery cell modules, the application range is relatively wide, the battery cell modules can be prevented from falling and deforming, and when the clamping device disclosed by the utility model is used for clamping the battery cell, no obvious relative friction between the battery cell and the clamping device can be ensured; therefore, the blue film of the battery cell can be prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack production, in particular to a clamping device. Background Art

[0002] CTP (Cell to Pack) battery pack refers to a battery technology that directly installs cells into the battery pack, also known as module-free battery technology. The advantage of this technology is that it can improve the energy density and enhance the volume utilization rate inside the battery pack. Currently, in the production and manufacturing process of CTP battery packs, it is essential to grasp and transfer the battery cells by the gluing module. In order to adjust the working state of the module at different workstations, it is usually necessary to grasp the stacked and pasted module to the designated workstation. Currently, most of the module grasping processes on the market clamp in the large surface direction of the battery cells, and then merge but do not clamp on the side of the module. The stepped block on the side plays a role in preventing the battery cells from falling.

[0003] The disadvantage of the existing grasping module structure is that the stepped block in the grasping module does not contact the bottom of the battery cell, which will cause the middle of the battery cells pasted into a group to sink, forming an arc, resulting in extremely poor flatness of the module after grasping; if the stepped block directly contacts the bottom of the battery cell, it will cause direct friction between the stepped block and the blue film of the battery cell during the clamping action, with a great risk of damaging the battery cell and causing product damage; in addition, there is also a form of adding a sponge suction cup on the top of the battery cell on the market to avoid the sinking of the battery cell during grasping, but the defect of this solution is that other mechanisms cannot be set on the top of the clamping jaw, which limits the compatibility and optimization space of the clamping jaw, increases the weight of the clamping jaw, and the prices of the sponge suction cup and the vacuum component are also relatively expensive. Adopting this solution will lead to a significant increase in cost. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a new type of large-compatibility clamping jaw for the gluing module, mainly solving the problem of bottom sinking and deformation of the battery module during the clamping and transfer process, ensuring the accuracy and flatness of the module during the transfer process; at the same time, avoiding the friction between the clamping device and the battery cell and reducing the probability of blue film damage.

[0005] To solve the above technical problem, the utility model provides a clamping device for clamping battery cells, including,

[0006] A mounting plate;

[0007] A support unit, which includes a support body. The support body is movably connected to the mounting plate. After being driven, the support body supports the battery cells to be clamped along a first direction; there are at least two battery cells, and at least two battery cells are arranged in sequence along a second direction. The first direction is the same as the height direction of the battery cells;

[0008] A first clamping unit, which includes a first limiting plate and a first clamping side plate. The first limiting plate is fixedly arranged on the mounting plate. The first clamping side plate is movably connected to the mounting plate, and after being driven, the first clamping side plate moves along the second direction and can abut against the first positioning surface of the battery cell.

[0009] A second clamping unit, which includes relatively arranged second clamping side plates. The second clamping side plates are movably connected to the mounting plate. After being driven, the second clamping side plates move along a third direction to clamp the second positioning surface of the battery cell, and the third direction is perpendicular to the second direction.

[0010] In an embodiment of the present utility model, the second clamping unit further includes a connecting side plate. The connecting side plate is movably connected to the mounting plate. The support body is connected to the connecting side plate and extends towards the direction where the battery cell is located.

[0011] In an embodiment of the present utility model, the support body includes a plurality of support members arranged at intervals. The number of the support members is not less than the number of the battery cells, and each support member is configured to support one battery cell.

[0012] In an embodiment of the present utility model, a positioning portion is formed between the bottom edge of the battery cell and a part of the second positioning surface. The support member is arranged in an "L" shape and is configured to match the positioning portion.

[0013] In an embodiment of the present utility model, there are two connecting side plates arranged oppositely. A receiving space is formed between the two connecting side plates. At least two battery cells are received in the receiving space, and the second clamping side plates are located in the receiving space.

[0014] In an embodiment of the present utility model, the second clamping unit further includes a floating assembly. The floating assembly includes a mounting block, an elastic member, and a connecting block. The mounting block is mounted on the connecting side plate. The elastic member is mounted on the mounting block. The connecting block is connected to the elastic movable end of the elastic member, and the elastic deformation direction of the elastic member is the same as the first direction. An avoidance hole is provided on the connecting side plate, and the connecting block is connected to the second clamping side plate through the avoidance hole.

[0015] In an embodiment of the present utility model, the floating assembly further includes a limiting block, a connecting plate, and a guiding rod. The limiting block is arranged on the connecting side plate and is opposite to the mounting block along the first direction. One end of the guiding rod is connected to the mounting block, and the other end is connected to the limiting block. The connecting plate is connected to the elastic member, the connecting plate is slidably connected to the guiding rod, and the connecting plate is also connected to the connecting block.

[0016] In an embodiment of the present utility model, the first clamping unit further includes a first driving member and a lead screw mechanism. The power output end of the first driving member is connected to the lead screw mechanism. The lead screw mechanism extends along the second direction, and the first clamping side plate is connected to the slider of the lead screw mechanism.

[0017] In an embodiment of the present utility model, the second clamping unit includes a second driving member assembly. The second driving assembly includes a second driving member and a cam direction-changing mechanism. The second driving member is disposed on the mounting plate. The cam direction-changing mechanism is connected to the power output end of the second driving member, and the cam direction-changing mechanism is connected to the second clamping side plate to drive it to move along the third direction.

[0018] In an embodiment of the present utility model, there are two sets of the second driving assemblies, and each set of the second driving assemblies is configured to drive one of the second clamping side plates to act.

[0019] The above technical solution of the present utility model has the following advantages compared with the prior art:

[0020] A clamping device of the present utility model is used to clamp an electric core. The clamping device includes a support unit, a first clamping unit, and a second clamping unit. Among them, the support body of the support unit can be driven to support the electric core from the bottom. The first clamping unit is provided with a first limiting plate and a first clamping side plate. After being driven, the first clamping side plate can abut against the first positioning surface of the electric core to apply a clamping force to the first positioning surface of the electric core. The second clamping unit is provided with a second clamping side plate, and after being driven, the second clamping side plate can clamp the second positioning surface of the electric core.

[0021] The clamping device of the present utility model has a large compatibility range, so that for different electric core modules, rapid model change can be realized, and the applicable range is relatively wide. In addition, the support body can support the electric core from the bottom to prevent the electric core module from sagging and deforming when clamping a battery module formed by a plurality of electric cores. Further, when the clamping device of the present utility model is used to clamp the electric core, it can ensure that there is no obvious relative friction between the electric core and the clamping device, thereby avoiding damage to the blue film of the electric core. Description of the Drawings

[0022] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments of the present utility model in conjunction with the drawings, where:

[0023] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the present utility model.

[0024] Figure 2 It is a schematic structural view of a plurality of battery cells to be clamped in a preferred embodiment of the present utility model.

[0025] Figure 3 It is a partial structural view of the second clamping unit in a preferred embodiment of the present utility model.

[0026] Figure 4 It is a partial structural view of the first clamping unit in a preferred embodiment of the present utility model.

[0027] Figure 5 It is a partial structural view of the assembly of the second driving component and the mounting plate in a preferred embodiment of the present utility model.

[0028] Figure 6 It is a view of the partial structure of the second clamping unit in a preferred embodiment of the present utility model along the second direction.

[0029] Explanation of the reference numerals in the specification drawings: 1, battery cell; 10, mounting plate; 11, first positioning surface; 12, second positioning surface; 20, support body; 30, first limiting plate; 31, first clamping side plate; 32, first driving member; 33, lead screw mechanism; 40, second clamping side plate; 41, connecting side plate; 410, avoidance hole; 42, mounting hole; 43, elastic member; 44, connecting block; 45, limiting block; 46, connecting plate; 47, guide rod; 48, second driving member; 49, cam direction-changing mechanism. Specific embodiments

[0030] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the specific embodiments cited are not intended to limit the present utility model.

[0031] Refer to Figure 1 and Figure 2 As shown, the present utility model discloses a clamping device for clamping the battery cell 1, and the clamping device includes a mounting plate 10.

[0032] The clamping device further includes a support unit, and the support unit includes a support body 20. The support body 20 is movably connected to the mounting plate 10, and after being driven, the support body 20 can support the battery cell 1 to be clamped along the first direction.

[0033] Specifically, the number of the battery cells 1 is at least two, at least two battery cells 1 are arranged in sequence along the second direction, and the first direction is the same as the height direction of the battery cell 1;

[0034] Furthermore, the clamping device further includes a first clamping unit, which includes a first limiting plate 30 and a first clamping side plate 31. The first limiting plate 30 is fixedly arranged on the mounting plate 10. The first clamping side plate 31 is movably connected to the mounting plate 10, and after being driven, the first clamping side plate 31 moves along the second direction and can abut against the first positioning surface 11 of the battery cell 1. Specifically, the first positioning surface 11 refers to the large surface of the battery cell.

[0035] Furthermore, the clamping device further includes a second clamping unit, which includes oppositely arranged second clamping side plates 40. The second clamping side plates 40 are movably connected to the mounting plate 10. After being driven, the second clamping side plates 40 can move along the third direction to clamp the second positioning surface 12 of the battery cell 1. It should be noted that the third direction is perpendicular to the second direction. The second positioning surface 12 refers to the side surface of the battery cell.

[0036] It can be known therefrom that a clamping device to be protected by the present invention is used for clamping a battery cell. The clamping device includes a supporting unit, a first clamping unit and a second clamping unit. Among them, the supporting body of the supporting unit can be driven to support the battery cell from the bottom. The first clamping unit is provided with a first limiting plate and a first clamping side plate. After being driven, the first clamping side plate can abut against the first positioning surface of the battery cell to apply a clamping force to the first positioning surface of the battery cell. The second clamping unit is provided with a second clamping side plate. After being driven, the second clamping side plate can clamp the second positioning surface of the battery cell. The clamping device of the present invention has a large compatibility range, so that for different battery cell modules, rapid model change can be realized, and the applicable range is relatively wide. In addition, the supporting body can support the battery cell from the bottom to prevent the battery cell module from sagging and deforming when clamping a battery cell module formed by multiple battery cells. Furthermore, when the clamping device of the present invention is used to clamp the battery cell, it can ensure that there is no obvious relative friction between the battery cell and the clamping device, thereby avoiding damage to the blue film of the battery cell.

[0037] In terms of details, the clamping device of the present invention has a large compatibility range for battery modules. Specifically, the length range of the battery module is 800 - 400 mm, and the width range is 400 - 280 mm, both of which can be applicable to the clamping device of the present invention.

[0038] Furthermore, the second clamping unit further includes a connecting side plate 41. The connecting side plate 41 is movably connected to the mounting plate 10. The supporting body 20 is connected to the connecting side plate 41 and extends towards the direction where the battery cell 1 is located. With such a setting, the supporting body 20 can support the bottom edge of the battery cell 1.

[0039] As a preferred embodiment, in order to ensure that a relatively stable supporting force can be provided for each battery cell 1, the support body 20 includes a plurality of support members arranged at intervals, the number of the support members is not less than the number of the battery cells 1, and each support member is configured to support one battery cell 1.

[0040] It should be noted that, as shown in Figure 2 the bottom edge of the battery cell 1 and a part of the second positioning surface 12 together form a positioning portion.

[0041] As a preferred embodiment, as shown in Figure 6 the support member is arranged in an "L" shape and is configured to match the shape of the positioning portion. Of course, the positioning portion can also be regarded as the bottom corner of the battery cell 1.

[0042] Furthermore, as shown in Figure 1 two connecting side plates 41 are oppositely provided, a receiving space is formed between the two connecting side plates 41, the battery cell 1 to be clamped can be received in the receiving space, and the second clamping side plate 40 is located in the receiving space.

[0043] As shown in Figure 3 and Figure 6 in order to avoid the battery cell module from sagging and deforming during the clamping process, the second clamping unit further includes a floating assembly. Specifically, the floating assembly includes a mounting block 42, an elastic member 43 and a connecting block 44. The mounting block 42 is mounted on the connecting side plate 41, the elastic member 43 is mounted on the mounting block 42, the connecting block 44 is connected to the elastic movable end of the elastic member 43, and the connecting block 44 is also connected to the second clamping side plate 40 at the same time. The elastic deformation direction of the elastic member 43 is the same as the first direction, so that the second clamping side plate 40 can move along the first direction. With such a setting, compared with the clamping jaws with a bottom structure in the prior art, floating support can be realized, effectively avoiding the sagging and deformation of the battery cell module.

[0044] In terms of details, the connecting side plate 41 is provided with an avoidance hole 410, and the connecting block 44 can be connected to the second clamping side plate 40 through the avoidance hole 410.

[0045] As shown in Figure 3As shown, as a preferred embodiment, the floating assembly further includes a limit block 45, a connecting plate 46, and a guide rod 47. The limit block 45 is disposed on the connecting side plate 41 and is opposite to the mounting block 42 along the first direction. One end of the guide rod 47 is connected to the mounting block 42, and the other end is connected to the limit block 45. The connecting plate 46 is connected to the elastic member 43, the connecting plate 46 is slidably connected to the guide rod 47, and the connecting plate 46 is further connected to the connecting block 44. With such a setting, it can ensure that the movement of the connecting plate 46 along the first direction is more stable, so that the acting force when the second clamping side plate 40 contacts the second positioning surface 12 of the battery cell 1 is more balanced and stable, further improving the protection of the battery cell module.

[0046] As a preferred embodiment, the elastic member 43 includes, but is not limited to, a spring.

[0047] As a preferred embodiment, the first clamping unit further includes a first driving member 32 and a lead screw mechanism 33. Refer to Figure 4 As shown, the power output end of the first driving member 32 is connected to the lead screw mechanism. The lead screw mechanism extends along the second direction. The first clamping side plate 31 is connected to the slider of the lead screw mechanism 33. The slider of the lead screw mechanism 33 can move along the second direction under the drive of the first driving member 32, so as to drive the first clamping side plate 31 to move along the second direction. In this way, the first limiting side plate 30 can cooperate with the first clamping side plate 31 to adjust the clamping range of the first clamping side plate 31 according to the different numbers of the battery cells 1 to be clamped.

[0048] The first driving member 32 includes, but is not limited to, a driving motor.

[0049] As a preferred embodiment, the second clamping unit includes a second driving member assembly. According to Figure 5 As shown, the second driving assembly includes a second driving member 48 and a cam reversing mechanism. The second driving member 48 is disposed on the mounting plate 10. The cam reversing mechanism is connected to the power output end of the second driving member 48, and the cam reversing mechanism is connected to the second clamping side plate 40, so that the cam reversing mechanism can drive the second clamping side plate 40 to move along the third direction.

[0050] To ensure the stability of clamping the battery cell 1, two sets of the second driving assemblies are provided, and each set of the second driving assemblies is configured to drive one of the second clamping side plates (40) to act. During the operation, the two sets of the second driving assemblies need to operate synchronously.

[0051] In the specific working process:

[0052] The first clamping unit can clamp the first positioning surface 11 (large surface) of the battery cell 1; the floating component of the second clamping unit can enable the support body 20 to have a certain amount of expansion and contraction in the first direction (height direction) after contacting the second positioning surface 12 (side surface) of the battery cell 1, so as to ensure that after the battery cell module is clamped from the side, the battery cell module is in surface contact with the bottom support body 1 under the action of gravity, ensuring the overall flatness during the transfer process.

[0053] By first clamping the side surface, then rising 3 mm to support the bottom surface of the battery cell 1, and finally clamping the large surface, it is ensured that there is no direct sliding between the clamping device and the battery cell 1. With such a setting, the influence of friction on the blue film can be effectively eliminated, thus avoiding damage to the blue film.

[0054] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if the terms "set" and "connect" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A clamping device for clamping a battery cell (1), characterized in that: include, Mounting plate (10); A support unit, comprising a support body (20), the support body (20) being movably connected to the mounting plate (10), the support body (20) being driven to support the battery cell (1) to be clamped along a first direction; the battery cells (1) having at least two, the at least two battery cells (1) being arranged in sequence along a second direction, the first direction being in the same direction as the height direction of the battery cells (1); A first clamping unit, comprising a first limit plate (30) and a first clamping side plate (31), wherein the first limit plate (30) is fixedly arranged on the mounting plate (10), the first clamping side plate (31) is movably connected to the mounting plate (10), and the first clamping side plate (31) is driven to move along the second direction and is capable of abutting against a first positioning surface (11) of the battery cell (1); A second clamping unit comprises a second clamping side plate (40) arranged opposite to each other, the second clamping side plate (40) being movably connected to the mounting plate (10), the second clamping side plate (40) being driven to move along a third direction to clamp a second positioning surface (12) of the battery cell (1), the third direction being perpendicular to the second direction.

2. A clamping device according to claim 1, characterized in that: The second clamping unit further comprises a connecting side plate (41), the connecting side plate (41) being movably connected to the mounting plate (10), and the supporting body (20) being connected to the connecting side plate (41) and extending in the direction where the battery core (1) is located.

3. A clamping device according to claim 1 or 2, characterized in that: The support body (20) comprises a plurality of support members arranged at intervals, the number of the support members being no less than the number of the battery cells (1), and each of the support members being configured to support one of the battery cells (1).

4. A clamping device according to claim 3, characterized in that: The bottom edge of the battery cell (1) and a portion of the second positioning surface (12) form a positioning portion, the support member is arranged in an "L-shape", and the support member is configured to match the positioning portion.

5. A clamping device according to claim 2, characterized in that: Two connecting side plates (41) are arranged opposite to each other, a receiving space is formed between the two connecting side plates (41), at least two battery cells (1) are received in the receiving space, and the second clamping side plate (40) is located in the receiving space.

6. A clamping device according to claim 5, characterized in that: The second clamping unit also includes a floating component, which includes a mounting block (42), an elastic member (43) and a connecting block (44); the mounting block (42) is mounted on the connecting side plate (41); the elastic member (43) is mounted on the mounting block (42); the connecting block (44) is connected to the elastic movable end of the elastic member (43); the elastic deformation direction of the elastic member (43) is the same as the first direction; the connecting side plate (41) is provided with an avoidance hole (410); the connecting block (44) is connected to the second clamping side plate (40) through the avoidance hole (410).

7. A clamping device according to claim 6, characterized in that: The floating assembly further comprises a limit block (45), a connecting plate (46) and a guide rod (47); the limit block (45) is arranged on the connecting side plate (41) and is opposite to the mounting block (42) along the first direction; one end of the guide rod (47) is connected to the mounting block (42), and the other end is connected to the limit block (45); the connecting plate (46) is connected to the elastic member (43); the connecting plate (46) is slidably connected to the guide rod (47); and the connecting plate (46) is also connected to the connecting block (44).

8. A clamping device according to claim 1, characterized in that: The first clamping unit further comprises a first driving member (32) and a screw mechanism (33), wherein a power output end of the first driving member (32) is connected to the screw mechanism (33), the screw mechanism extends along the second direction, and the first clamping side plate (31) is connected to a slider of the screw mechanism.

9. A clamping device according to claim 1, characterized in that: The second clamping unit includes a second driving assembly, which includes a second driving member (48) and a cam changing mechanism. The second driving member (48) is arranged on the mounting plate (10), and the cam changing mechanism is connected to the power output end of the second driving member (48). The cam changing mechanism is connected to the second clamping side plate (40) to drive it to move along the third direction.

10. A clamping device according to claim 9, characterized in that: The second drive assembly is provided with two groups, and each group of the second drive assembly is configured to drive one of the second clamping side plates (40) to move.

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