Clamping device

Abstract

The utility model relates to a clamping device which comprises an installation support, a first clamping assembly and a first driving assembly. The first clamping assembly is connected with the first driving assembly and comprises a first clamping piece and a second clamping piece. The first clamping assembly is used for clamping a battery cell; the first driving assembly is connected with the mounting bracket and comprises a first driving piece and a second driving piece; the second driving piece is used for driving the first clamping piece and the second clamping piece to move synchronously, and the first driving piece is used for driving the first clamping piece and the second clamping piece to move relatively. When the first driving piece and the second driving piece act simultaneously, the stroke of the first clamping piece is greatly increased, so that the device is suitable for the condition that the distance between battery cells is too large. The first driving piece and the second driving piece can act at the same time to adjust the position states of the first clamping piece and the second clamping piece so as to meet the requirement for placing battery cells on a conveying belt for battery module processing, and the adjusting speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a clamping device. Background Art

[0002] With the development of electrified products, the development of new energy battery technology is evolving towards high energy density, long cycle life, low cost and high safety. In the process of battery production, battery cell design, battery materials, battery assembly technology and battery detection are the key links affecting battery energy density and battery safety.

[0003] In the current battery assembly process, high voltage electricity, chemical substances and high energy density components are involved. Therefore, high-precision assembly equipment and technology are required to meet the safety and reliability during cell assembly and ensure high energy density and high safety of the battery. The clamping device used during cell assembly generally uses a cylinder or a lead screw to drive the movement of multiple clamping members to adjust the distance between the clamping members. However, the stroke of the cylinder is a fixed stroke and cannot meet the variable distance requirements in various situations. Although the lead screw can meet the variable distance requirements in various situations, the structure driven by the lead screw is relatively complex and the cost is also high. Summary of the Utility Model

[0004] Based on this, the utility model provides a clamping device that can realize synchronous variable distance of multiple clamping members to meet the grasping requirements of battery cells with different distances.

[0005] A clamping device, the device includes:

[0006] An installation bracket;

[0007] A first clamping assembly, connected to a first driving assembly, including a first clamping member and a second clamping member; the first clamping assembly is used for clamping a battery cell; and

[0008] A first driving assembly, connected to the installation bracket, including a first driving member and a second driving member; the second driving member is used to drive the first clamping member and the second clamping member to move synchronously, and the first driving member is used to drive the first clamping member and the second clamping member to move relatively.

[0009] In one of the embodiments, the device further includes:

[0010] A second clamping assembly, including a third clamping member and a fourth clamping member; and

[0011] A second driving assembly, the second driving assembly includes a third driving member and a fourth driving member; the fourth driving member is used to drive the fourth clamping member and the third clamping member to move relatively, and the third driving member is used to drive the first clamping assembly and the second clamping assembly to move synchronously.

[0012] In one embodiment, the first clamping member and the first driving member are respectively arranged on the first surface and the second surface of the first mounting plate that face away from each other, and the second clamping member and the second driving member are respectively arranged on the third surface and the fourth surface of the second mounting plate that face away from each other.

[0013] In one embodiment, the device further includes:

[0014] An adapter, fixedly connected to the fourth surface of the second mounting plate, the first surface of the adapter is connected to the piston rod of the first driving member, and the second surface of the adapter is connected to the piston rod of the second driving member.

[0015] In one embodiment, the device further includes:

[0016] A connecting member, connected to the first mounting plate, the connecting member is provided with a through hole for passing through the piston rod of the first driving member, and the connecting member abuts against the housing of the first driving member.

[0017] In one embodiment, the first surface of the adapter is connected to a first limiting member, the first limiting member is arranged opposite to the first driving member, and the first limiting member includes:

[0018] A gear position part, abutting against the connecting member; and

[0019] An adjusting part, connected to the adapter, for adjusting the distance between the gear position part and the adapter.

[0020] In one embodiment, the device further includes:

[0021] A second limiting member, arranged opposite to the second driving member and fixed on the mounting bracket, for limiting the movement of the adapter, and the second limiting member includes:

[0022] A limiting frame, fixedly connected to the second mounting plate; and

[0023] A limiting column, inserted on the limiting frame, for abutting against the adapter.

[0024] In one embodiment, the first clamping assembly and the first driving assembly are centrosymmetric with the second clamping assembly and the second driving assembly.

[0025] In one embodiment, the mounting bracket is provided with a slide rail, and the first mounting plate and the second mounting plate are correspondingly provided with sliders, and the slide rail is slidably connected to the sliders.

[0026] In one embodiment, the mounting bracket is provided with an opening, and the opening corresponds to the first driving assembly and the second driving assembly.

[0027] The above clamping device drives the first clamping member and the second clamping member to move relative to each other through the first driving member, so as to adjust the positional relationship between the first clamping member and the second clamping member, enabling the first clamping member and the second clamping member to adjust the spacing according to the position of the battery cell, so as to ensure that the respective corresponding battery cells can be accurately clamped; the second driving member is used to drive the first clamping member and the second clamping member to move synchronously. When the first driving member and the second driving member act simultaneously, the stroke of the first clamping member is greatly increased to be applicable to the situation where the spacing between the battery cells is too large. On the other hand, during the process of clamping and transporting the battery cells by the first clamping member and the second clamping member, the first driving member and the second driving member can act simultaneously to adjust the positional states of the first clamping member and the second clamping member to meet the requirements of placing the battery cells on the conveyor belt for battery module processing, thereby improving the adjustment speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Structural schematic diagram of the clamping device in an embodiment of the present invention;

[0030] Figure 2 Exploded structural schematic diagram of the clamping device in an embodiment of the present invention;

[0031] Figure 3 Structural schematic diagram of the first driving assembly and the second driving assembly in an embodiment of the present invention;

[0032] Figure 4 Structural schematic diagram of the first driving assembly in an embodiment of the present invention;

[0033] Figure 5 Structural schematic diagram of the second driving assembly in an embodiment of the present invention;

[0034] Figure 6 Structural schematic diagram of the first limiting member in an embodiment of the present invention.

[0035] The reference numerals in the specific embodiments are as follows:

[0036] Mounting bracket 10, first clamping assembly 20, first driving assembly 30, second clamping assembly 40, second driving assembly 50, first clamping member 202, second clamping member 204, first mounting plate 206, second mounting plate 208, adapter 210, connecting member 212, first limiting member 214, gear portion 216, adjusting portion 218, limiting frame 220, limiting post 222, slider 224, first driving member 302, second driving member 304, piston rod 306 of the second driving member, piston rod 308 of the first driving member, housing 310 of the first driving member, housing 312 of the second driving member, slide rail 314, third clamping member 402, fourth clamping member 404, third driving member 502, fourth driving member 504. Detailed implementation manners

[0037] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly specified or limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0044] Based on this, the applicant provides a clamping device, which realizes the synchronous variable pitch of multiple clamping members through the linkage of cylinders to meet the grasping requirements of battery cells with different pitches. Please refer to Figure 1 and Figure 2 , Figure 1 which shows a schematic structural diagram of the clamping device in an embodiment of the present utility model. Figure 2The figure shows a schematic exploded view of a clamping device according to an embodiment of the present invention. An embodiment of the present invention provides a clamping device, which includes a mounting bracket 10, a first clamping assembly 20, and a first driving assembly 30. The first driving assembly 30 is connected to the mounting bracket 10. The first driving assembly 30 includes a first driving member 302 and a second driving member 304. The first clamping assembly 20 includes a first clamping member 202 and a second clamping member 204. The first clamping member 202 is connected to the first driving member 302, and the second clamping member 204 is connected to the second driving member 304. The first driving member 302 is used to drive the first clamping member 202 and the second clamping member 204 to move relative to each other, and the second driving member 304 is used to drive the first clamping member 202 and the second clamping member 204 to move synchronously.

[0045] Specifically, as shown in Figure 4 the first driving member 302 and the second driving member 304 are both cylinders. The housing 312 of the second driving member 304 is fixed to the mounting bracket 10. The position relationship between the first clamping member 202 and the second clamping member 204 is controlled by the piston rods of the first driving member 302 and the second driving member 304 respectively. When the first driving member 302 operates and the second driving member 304 is stationary, the piston rod 308 of the first driving member acts on the second clamping member 204. Since the second clamping member 204 is fixed to the mounting bracket 10 through the second driving member 304, the position of the second clamping member 204 remains unchanged. Therefore, the housing 310 of the first driving member receives the reaction force of the piston rod 308 of the first driving member, causing the housing 310 of the first driving member to move away from the second driving member 304 in the first direction, that is, the first clamping member 202 and the second clamping member 204 move relative to each other. When the first driving member 302 is stationary and the second driving member 304 operates, since the housing 312 of the second driving member is fixed to the mounting bracket 10, the piston rod 306 of the second driving member drives the second clamping member 204 to move in the first direction. And since the piston rod 308 of the first driving member is fixedly connected to the second clamping member 204, when the second clamping member 204 moves in the first direction, the second driving member 304 drives the first clamping member 202 and the second clamping member 204 to move synchronously. When the first driving member 302 and the second driving member 304 operate simultaneously, the piston rod 306 of the second driving member drives the second clamping member 204 to move synchronously with the first clamping member 202. At this time, the distance between the first clamping member 202 and the second clamping member 204 remains unchanged. When the first driving member 302 operates simultaneously, the piston rod 308 of the first driving member drives the first clamping member 202 to move relative to the second clamping member 204 in the first direction.

[0046] Exemplarily, during the processing and manufacturing of the battery module, for battery cells of different models and sizes, the position relationship between the first clamping member 202 and the second clamping member 204 is adjusted through the first driving assembly 30, so that the first clamping member 202 and the second clamping member 204 can respectively align with the corresponding battery cells, and the battery cells clamped by the first clamping member 202 and the second clamping member 204 are transported to the conveyor belt for battery module processing; during the transportation process, the first driving member 302 and the second driving member 304 can act synchronously, enabling the first clamping member 202 and the second clamping member 204 to move relatively while moving synchronously, and enabling a larger range of position adjustment to meet the requirements for placing battery cells on the conveyor belt for battery module processing.

[0047] In this embodiment, the first driving member 302 drives the first clamping member 202 and the second clamping member 204 to move relatively to adjust the position relationship between the first clamping member 202 and the second clamping member 204, so that the first clamping member 202 and the second clamping member 204 can adjust the spacing according to the position of the battery cell to ensure that they can accurately clamp their respective corresponding battery cells; the second driving member 304 is used to drive the first clamping member 202 and the second clamping member 204 to move synchronously. When the first driving member 302 and the second driving member 304 act simultaneously, the stroke of the first clamping member 202 is greatly increased to be applicable to the situation where the spacing between battery cells is too large. On the other hand, during the process of clamping and transporting the battery cells by the first clamping member 202 and the second clamping member 204, the first driving member 302 and the second driving member 304 can act simultaneously to adjust the position states of the first clamping member 202 and the second clamping member 204 to meet the requirements for placing battery cells on the conveyor belt for battery module processing and improve the adjustment speed.

[0048] Please continue to refer to Figure 2 and in combination with Figure 3 Figure 3 FIG. shows a schematic structural diagram of the first driving assembly and the second driving assembly in an embodiment of the present invention. In some embodiments, the clamping device further includes a second clamping assembly 40 and a second driving assembly 50. The second clamping assembly 40 includes a third clamping member 402 and a fourth clamping member 404. The second driving assembly 50 includes a third driving member 502 and a fourth driving member 504; the fourth driving member 504 is used to drive the fourth clamping member 404 and the third clamping member 402 to move relatively, and the second driving member 304 and the third driving member 502 are used to drive the relative movement of the first clamping assembly 20 and the second clamping assembly 40.

[0049] ​Specifically, the second driving assembly 50 and the first driving assembly 30 are centrosymmetric. The third driving member 502 and the fourth driving member 504 are both cylinders. The third driving member 502 is fixed on the mounting bracket 10, and the position relationship between the third clamping member 402 and the fourth clamping member 404 is controlled by the piston rods of the third driving member 502 and the fourth driving member 504 respectively. When the fourth driving member 504 operates and the third driving member 502 is stationary, the piston rod of the fourth driving member 504 acts on the third clamping member 402. Since the third clamping member 402 is fixed on the mounting bracket 10 by the third driving member 502, the position of the third clamping member 402 remains unchanged. Therefore, the housing of the fourth driving member 504 receives the reaction force of the piston rod of the fourth driving member 504, causing the housing of the fourth driving member 504 to move away from the third driving member 502 in the first direction, that is, the fourth clamping member 404 moves relative to the third clamping member 402. When the fourth driving member 504 is stationary and the third driving member 502 operates, since the housing of the third driving member 502 is fixed on the mounting bracket 10, the piston rod of the third driving member 502 drives the third clamping member 402 to move in the first direction. And since the piston rod of the fourth driving member 504 is fixedly connected to the third clamping member 402, when the third clamping member 402 moves in the first direction, the third driving member 502 drives the third clamping member 402 and the fourth clamping member 404 to move synchronously. When the fourth driving member 504 and the third driving member 502 operate simultaneously, the piston rod of the third driving member 502 drives the third clamping member 402 and the fourth clamping member 404 to move synchronously. At this time, the distance between the third clamping member 402 and the fourth clamping member 404 remains unchanged. When the fourth driving member 504 operates simultaneously, the piston rod of the fourth driving member 504 drives the fourth clamping member 404 to move relative to the third clamping member 402 in the first direction.

[0050] Exemplarily, the first driving member 302, the second driving member 304, the third driving member 502, and the fourth driving member 504 are arranged from left to right in the first direction. In the contracted state, the driving members are arranged without gaps, and the stroke of each driving member is 5 cm. The distance between the cells in the cell box is 20 cm. When the clamping device needs to clamp two cells in the cell box simultaneously, the first driving member 302 and the second driving member 304 drive the first clamping member 202 and the second clamping member 204 to move away from the second clamping assembly 40 to reach the farthest distance that the first clamping member 202 can reach. The third driving member 502 and the fourth driving member 504 drive the third clamping member 402 and the fourth clamping member 404 to move away from the first clamping assembly 20 to reach the farthest distance that the fourth clamping member 404 can reach. At this time, the distance between the first clamping member 202 and the second clamping member 204 is 20 cm, which can meet the distance requirement for clamping two cells simultaneously. During the process of transporting the cells to the conveyor belt for battery module processing after the clamping device clamps the cells, the first driving assembly 30 and the second driving assembly 50 contract and adjust simultaneously, so that the distance between the first clamping member 202 and the fourth clamping member 404 meets the placement requirement on the conveyor belt for battery module processing.

[0051] In this embodiment, by symmetrically arranging the second clamping assembly 40 and the second driving member 304, when the clamping device clamps the cells, the first clamping member 202, the second clamping member, the third clamping member 402, and the fourth clamping member 404 simultaneously perform uniform distance variation to maintain the overall weight balance of the clamping device and avoid eccentricity, which may cause unstable clamping of the cells by the clamping device. The cooperation of the first driving assembly 30 and the second driving assembly 50 increases the stroke of the first clamping member 202 and the fourth clamping member 404, enabling the first clamping member 202 to adapt to the clamping requirements of cells with different distances and expanding the application range of the clamping device.

[0052] Please refer to Figure 4 and Figure 5 , Figure 4 which shows a schematic structural diagram of the first driving assembly in an embodiment of the present invention. Figure 4The schematic diagram of the structure of the second driving component in one embodiment of the utility model is shown. In some embodiments, the first clamping member 202 and the first driving member 302 are respectively arranged on the first surface and the second surface of the first mounting plate 206 which are opposite to each other, and the second clamping member 204 and the second driving member 304 are respectively arranged on the third surface and the fourth surface of the second mounting plate 208 which are opposite to each other. The clamping device also includes an adapter 210 and a connecting member 212, the adapter 210 is fixedly connected to the first surface of the second mounting plate 208, the first surface of the adapter 210 is connected to the piston rod 308 of the first driving member, and the second surface of the adapter 210 is connected to the piston rod 306 of the second driving member; the connecting member 212 is connected to the first mounting plate 206, and the connecting member 212 is provided with a through hole, and the through hole is used to pass the piston rod 308 of the first driving member, and the connecting member 212 is in contact with the housing 310 of the first driving member.

[0053] Specifically, the first surface of the first mounting plate 206 is connected to the first clamping member 202, the second surface of the first mounting plate 206 is fixedly connected to the connecting member 212, the side projection of the connecting member 212 is L-shaped, the bottom of the connecting member 212 is fixedly connected to the second surface of the first mounting plate 206, and a through hole is provided on the connecting plate. The diameter of the through hole is larger than the diameter of the piston rod 306 of the second driving member and smaller than the size of the housing 312 of the second driving member, so that the piston rod 306 of the second driving member can pass through the first driving member 302, and the housing 312 of the second driving member is connected to the connecting member 212. The first surface of the second mounting plate 208 is connected to the second clamping member 204, and the second surface of the second mounting plate 208 is fixedly connected to the adapter 210. The side projection of the adapter 210 is L-shaped, and the dimension of the adapter 210 in the width direction is larger than the dimension of the connecting member 212 in the width direction; the bottom of the adapter 210 is connected to the second surface of the second mounting plate 208, the first surface of the adapter 210 is connected to the piston rod 308 of the first driving member, and the second surface of the adapter 210 is connected to the piston rod 306 of the second driving member.

[0054] Exemplarily, the piston rod 306 of the second driving member is in a stationary state, the adapter 210, the second mounting plate 208 and the second clamping member 204 connected to the second driving member 304 all remain stationary, and the piston rod of the first driving member 302 extends outward. Since the piston rod 308 of the first driving member is connected to the adapter 210, the piston rod 308 of the first driving member applies a force in the opposite direction to the housing 310 of the first driving member, and the housing 310 of the first driving member drives the connecting member 212, the first mounting plate 206 and the first clamping member 202 to move in a direction away from the second clamping member 204.

[0055] In this embodiment, the adapter 210 and the connecting member increase the operating range of the first driving member 302 and the second driving member 304, enabling the driving force to be better transmitted to the first clamping member 202 and the second clamping member 204. When changing the pitch, the clamping device is more stable, and the function of simultaneously driving the first clamping member 202 and the second clamping member 204 by the second driving member 304 is also achieved.

[0056] Combined Figure 5 with Figure 6 , Figure 6 FIG. shows a schematic structural view of the first limiting member in an embodiment of the present invention. In some embodiments, the clamping device further includes a first limiting member 214 and a second limiting member. The first limiting member 214 is connected to the first surface of the adapter 210, the first limiting member 214 is disposed opposite to the first driving member 302, and the second limiting member is disposed opposite to the second driving member 304 and fixed to the mounting bracket 10 for restricting the movement of the adapter 210.

[0057] The first limiting member 214 includes a blocking portion 216 and an adjusting portion 218. The second end of the adjusting portion 218 is connected to the first end of the blocking portion 216, the first end of the adjusting portion 218 is connected to the adapter 210, and the second end of the blocking portion 216 abuts against the connecting member. Optionally, the surface of the first end of the adjusting portion 218 is provided with an adjusting thread. By screwing in and out the adjusting thread of the adjusting portion 218, the distance between the second end of the blocking portion 216 and the adapter 210 is adjusted, thereby restricting the distance between the connecting member and the adapter 210. The second limiting member includes a limiting frame 220 and a limiting post 222. The limiting frame 220 is fixedly connected to the second mounting plate 208, and the limiting post 222 is inserted into the limiting frame 220 for abutting against the first surface of the adapter 210.

[0058] Among them, the first driving member 302, the connecting member, and the first limiting member 214 are located on the same straight line, the second driving member 304, the adapter 210, and the second limiting member are located on another straight line, and the two straight lines are parallel to each other.

[0059] In this embodiment, the distance between the adapter 210 and the connecting member is restricted by the first limiting member 214. When the first driving member 302 and the second driving member 304 control the movement of the first clamping member 202 and the second clamping member 204, the minimum distance between the first clamping member 202 and the second clamping member 204 is restricted, avoiding collision between the battery cells during the pitch change process, resulting in damage or detachment and causing losses.

[0060] Please continue to refer to Figure 1, in some embodiments, the mounting bracket is provided with an opening, which corresponds to the first driving assembly 30 and the second driving assembly 50; the mounting bracket 10 is provided with a slide rail 314, and the first mounting plate 206 and the second mounting plate 208 are correspondingly provided with sliders 224, and the slide rail 314 is slidably connected to the slider 224.

[0061] Specifically, the second surface of the first mounting plate 206 is provided with sliders 224, and the sliders 224 are respectively arranged at both ends of the adapter 210. The sliders 224 on the second surface of the second mounting plate 208 correspond to the positions of the sliders 224 on the first mounting plate 206, and the sliding direction of the sliders 224 is the first direction. The mounting bracket 10 is provided with a slide rail 314 at a position corresponding to the slider 224, and the slide rail 314 is slidably connected to the slider 224. The mounting bracket 10 is provided with an opening, and the opening is correspondingly provided with the first driving assembly 30 and the second driving assembly 50, so that the first driving assembly 30 and the second driving assembly 50 pass through the installation and are connected to the fixing members on the mounting bracket 10. Among them, the housings of the first driving member 302, the second driving member 304, the third driving member 502 and the fourth driving member 504 are all arranged on the mounting bracket 10.

[0062] In this embodiment, the mounting bracket 10 is provided with an opening corresponding to the first driving assembly 30 and the second driving assembly 50, which reduces the volume of the clamping device and makes the structure of the clamping device more compact; through the connection between the sliders 224 on the first mounting plate 206 and the second mounting plate 208 and the sliding grooves, the first driving assembly 30 and the second driving assembly 50 are more smooth in driving the first clamping assembly and the second clamping assembly 40, and can also cooperate with the opening on the mounting bracket 10 to move, improving the efficiency of variable pitch.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0064] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A clamping device, characterized in that, The device includes: a mounting bracket; a first clamping assembly connected to a first driving assembly, including a first clamping member and a second clamping member; the first clamping assembly is used for clamping the battery cell; and a first driving assembly connected to the mounting bracket, including a first driving member and a second driving member; the second driving member is used for driving the first clamping member and the second clamping member to move synchronously, and the first driving member is used for driving the first clamping member and the second clamping member to move relatively.

2. The device according to claim 1, wherein It further includes: a second clamping assembly, including a third clamping member and a fourth clamping member; and a second driving assembly, the second driving assembly including a third driving member and a fourth driving member; the fourth driving member is used for driving the fourth clamping member and the third clamping member to move relatively, and the third driving member is used for driving the first clamping assembly and the second clamping assembly to move synchronously.

3. The device according to claim 1, characterized in that, The first clamping member and the first driving member are respectively arranged on the first surface and the second surface of the first mounting plate that face away from each other, and the second clamping member and the second driving member are respectively arranged on the third surface and the fourth surface of the second mounting plate that face away from each other.

4. The device according to claim 3, characterized in that The device further includes: an adapter, fixedly connected to the four surfaces of the second mounting plate, the first surface of the adapter is connected to the piston rod of the first driving member, and the second surface of the adapter is connected to the piston rod of the second driving member.

5. The device according to claim 3, characterized in that, The device further includes: a connecting member, connected to the first mounting plate, the connecting member is provided with a through hole for passing through the piston rod of the first driving member, and the connecting member abuts against the housing of the first driving member.

6. The device according to claim 4, characterized in that, The first surface of the adapter is connected to a first limiting member, the first limiting member is arranged opposite to the first driving member, and the first limiting member includes: a blocking portion, abutting against the connecting member; and an adjusting portion, connected to the adapter, for adjusting the distance between the blocking portion and the adapter.

7. The device according to claim 4, characterized in that, The device further includes: a second limiting member, arranged opposite to the second driving member and fixed on the mounting bracket, for limiting the movement of the adapter, and the second limiting member includes: a limiting frame, fixedly connected to the second mounting plate; and a limiting post, inserted on the limiting frame for abutting against the adapter.

8. The device according to claim 2, characterized in that, The first clamping assembly and the first driving assembly are centrosymmetric with the second clamping assembly and the second driving assembly.

9. The device according to claim 3, characterized in that, The mounting bracket is provided with a slide rail, and the first mounting plate and the second mounting plate are correspondingly provided with sliders, and the slide rail is slidably connected to the sliders.

10. The device according to claim 2, characterized in that, The mounting bracket is provided with an opening, and the opening corresponds to the first driving assembly and the second driving assembly.

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