Battery monomer clamping device and testing equipment

Abstract

Some embodiments of the present application provide a clamping device of a battery cell and a test device, the clamping device of the battery cell comprises a clamp, a hoisting mechanism and an extrusion mechanism, a first clamping member and a second clamping member of the clamp are oppositely arranged along a first direction, and the battery cell is clamped between the first clamping member and the second clamping member; the hoisting mechanism is used for hoisting a clamp for clamping a battery monomer; a bearing platform in the extruding mechanism is used for bearing the clamp, the first clamping piece is arranged on the bearing platform, and the output end of the extruding machine can act on the second clamping piece and drive the second clamping piece to be close to the first clamping piece. The hoisting mechanism can hoist the clamp clamping the battery monomer to the bearing platform, so that the extruding machine applies pressure to the battery monomer clamped between the first clamping piece and the second clamping piece, the clamping of the battery monomer is realized, the workload of transferring the clamp clamping the battery monomer to the bearing platform is reduced, and the working efficiency is improved. And the working efficiency of the clamping device of the battery monomer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery detection, and in particular to a battery cell clamping device and testing equipment. Background Art

[0002] Battery devices have the advantages of high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric airplanes, electric ships, and electric tools.

[0003] As the capacity of battery devices continues to increase, the volume and weight of battery cells in battery devices are also increasing, making it increasingly difficult to clamp and test battery cells. How to reduce the difficulty of clamping and testing battery cells and improve the efficiency of clamping and testing battery cells has attracted increasing attention from technicians in this field. Utility Model Content

[0004] In view of the above problems, the present application provides a battery cell clamping device and a testing device, wherein the battery cell clamping device has high working efficiency.

[0005] In a first aspect, some embodiments of the present application provide a battery cell clamping device, which is used to extrude the battery cell, and the battery cell clamping device comprises a clamp, a lifting mechanism and an extrusion mechanism, wherein the clamp comprises a first clamping member and a second clamping member connected to each other, the first clamping member and the second clamping member are arranged opposite to each other along a first direction, and the battery cell is clamped between the first clamping member and the second clamping member; the lifting mechanism is used to lift the clamp clamping the battery cell; the extrusion mechanism comprises a carrying platform and an extruder, the carrying platform is used to carry the clamp, the first clamping member is placed on the carrying platform, and the output end of the extruder can act on the second clamping member and drive the second clamping member close to the first clamping member; a centering mechanism is provided on the carrying platform, and the centering mechanism is used to move the clamp clamping the battery cell to a position opposite to the output end of the extruder along the first direction.

[0006] In the above structure, the lifting mechanism can lift the clamp holding the battery cell onto the carrying platform so that the extruder can apply pressure to the battery cell clamped between the first clamping member and the second clamping member to achieve clamping of the battery cell, thereby reducing the workload of transporting the clamp holding the battery cell to the carrying platform and improving the working efficiency of the battery cell clamping device; by setting up the centering mechanism, the clamp holding the battery cell can reach a position opposite to the output end of the extruder along the first direction, which is convenient for the extruder to extrude the clamp holding the battery cell.

[0007] According to the battery cell clamping device provided in some embodiments of the present application, the extruder includes an extrusion rod, a connecting rod and a first driver, the connecting rod is connected to the extrusion rod and the output end of the first driver, and the extrusion rod can press the second clamping member along the first direction under the drive of the first driver. Since the first clamping member and the second clamping member are arranged relative to each other along the first direction, and the battery cell is located between the first clamping member and the second clamping member, when the extrusion rod is driven by the first driver to press the second clamping member along the first direction, the second clamping member can approach the first clamping member along the first direction to clamp the battery cell.

[0008] According to the battery cell clamping device provided in some embodiments of the present application, the battery cell clamping device also includes a body, the body is provided with a guide hole extending along the first direction, the connecting rod slides through the guide hole, and the output end of the first driver is connected to the extrusion rod through the connecting rod. By extending the guide hole along the first direction and making the connecting rod, which is respectively connected to the extrusion rod and the first driver at both ends, slide through the guide hole, the movement of the connecting rod is carried out along the first direction, so that the connecting rod can drive the extrusion rod to move along the first direction, so that the extrusion rod can squeeze the second clamping member along the first direction, so that the second clamping member can approach the first clamping member along the first direction, and the battery cell is squeezed.

[0009] According to the battery cell clamping device provided in some embodiments of the present application, the battery cell clamping device also includes a second driver, the carrying platform is movably arranged on the body, and the output end of the second driver is connected to the carrying platform by transmission. By connecting the output end of the second driver to the carrying platform by transmission, the second driver can drive the carrying platform to move, so as to move the clamp holding the battery cell on the carrying platform to a preset position.

[0010] According to the battery cell clamping device provided in some embodiments of the present application, a first slide rail is provided on the machine body, and the carrying platform is slidably connected to the first slide rail. By providing the first slide rail on the machine body and making the carrying platform slidably connected to the first slide rail, the carrying platform moves smoothly relative to the machine body.

[0011] According to the battery cell clamping device provided in some embodiments of the present application, the battery cell clamping device also includes a controller and a second pressure sensor, the second pressure sensor is clamped between the bearing platform and the body, and the controller is electrically connected to the second pressure sensor and the extruder. By electrically connecting the controller to the second pressure sensor and the extruder, the controller can control whether the extruder continues to extrude the battery cell according to the pressure measured by the second pressure sensor, which is conducive to maintaining the extrusion force on the battery cell stable.

[0012] According to the battery cell clamping device provided in some embodiments of the present application, the lifting mechanism includes a bracket, a lifting arm and a lifting module, the bracket is connected to the body, the lifting arm is rotatably connected to the bracket, the lifting module is movably connected to the lifting arm, and the lifting module is used to lift the clamp holding the battery cell. By rotatably connecting the lifting arm to the bracket and movably connecting the lifting module to the lifting arm, the lifting module can be transferred within a larger range, so that the clamp holding the battery cell lifted by the lifting module can be transferred within a larger range.

[0013] According to the battery cell clamping device provided in some embodiments of the present application, the centering mechanism includes a pushing member, a second slide rail, a third slide rail, a third driver and a fourth driver, the second slide rail extends along the second direction, the third slide rail extends along the third direction, and the first direction, the second direction and the third direction are all perpendicular to each other; the second slide rail is arranged on the bearing platform, the third slide rail is slidably connected to the second slide rail, the pushing member is slidably connected to the third slide rail, the output end of the third driver is transmission-connected to the third slide rail, the output end of the fourth driver is transmission-connected to the pushing member, and the pushing member is used to push the clamp holding the battery cell to move.

[0014] According to the battery cell clamping device provided in some embodiments of the present application, the pushers are arranged in pairs, and each pair of pushers includes two pushers arranged opposite to each other, and the two pushers in each pair of pushers can clamp the clamp holding the battery cell. By arranging the pushers in pairs, and making the two pushers in each pair of pushers clamp the clamp holding the battery cell, the clamp holding the battery cell can be clamped and fixed by the pushers arranged in pairs, thereby reducing the possibility of the clamp holding the battery cell being offset when the extruder squeezes the clamp holding the battery cell.

[0015] According to the battery cell clamping device provided in some embodiments of the present application, the pusher includes a seat body and a push handle, the push handle is detachably connected to the seat body, the seat body is slidably connected to the third slide rail and is transmission-connected to the output end of the fourth driver, and the push handle is used to push the clamp holding the battery cell. By detachably connecting the push handle to the seat body, the push handle can be removed and replaced, so that the push handle can adapt to different types of clamps by replacement, which is conducive to improving the adaptability of the battery cell clamping device.

[0016] According to the battery cell clamping device provided in some embodiments of the present application, the battery cell clamping device also includes a controller, the clamp also includes a third clamping member and a first pressure sensor, the third clamping member is connected to the side of the second clamping member away from the first clamping member, the first pressure sensor is clamped between the second clamping member and the third clamping member, and the controller is electrically connected to the first pressure sensor and the extruder. By electrically connecting the controller to the first pressure sensor and the extruder, the controller can control whether the extruder continues to extrude the battery cell according to the pressure measured by the first pressure sensor, which is conducive to keeping the extrusion force on the battery cell stable.

[0017] In a second aspect, some embodiments of the present application provide a battery cell testing device, which includes a battery cell clamping device provided by any of the above technical solutions, and the battery cell clamping device is used to squeeze the battery cell.

[0018] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0019] Some embodiments of the present application provide a battery cell clamping device, which is used to squeeze the battery cell. The battery cell clamping device includes a clamp, a hoisting mechanism and a squeezing mechanism. The clamp includes a first clamping member and a second clamping member connected to each other. The first clamping member and the second clamping member are arranged opposite to each other along a first direction, and the battery cell is clamped between the first clamping member and the second clamping member. The hoisting mechanism is used to hoist the clamp holding the battery cell. The squeezing mechanism includes a bearing platform and an extruder. The bearing platform is used to carry the clamp. The first clamping member is placed on the bearing platform. The output end of the extruder can act on the second clamping member and drive the second clamping member to approach the first clamping member. In the above structure, the hoisting mechanism can hoist the clamp holding the battery cell onto the bearing platform so that the extruder can apply pressure to the battery cell clamped between the first clamping member and the second clamping member to achieve the clamping of the battery cell, thereby reducing the workload of transporting the clamp holding the battery cell to the bearing platform and improving the working efficiency of the battery cell clamping device.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a battery cell clamping device provided in some embodiments of the present application;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 A top view of a battery cell clamping device provided in some embodiments of the present application.

[0025] In the attached picture:

[0026] 1. Clamp; 11. First clamp; 12. Second clamp; 13. Third clamp; 14. First pressure sensor;

[0027] 2. Hoisting mechanism; 21. Bracket; 22. Lifting arm; 23. Lifting module;

[0028] 3. Extrusion mechanism; 31. Carrying platform; 32. Extruder; 321. Extrusion rod; 322. Connecting rod; 35. Centering mechanism; 351. Pushing member; 3511. Base; 3512. Pushing handle; 352. Second slide rail; 353. Third slide rail; 4. Machine body; 41. Guide hole; 42. First slide rail;

[0029] 10. Battery cell; X, second direction; Y, third direction; Z, first direction. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0032] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0033] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.

[0037] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0038] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0039] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0040] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0041] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0042] As an important component of a battery device, the battery cell has a very important impact on the performance of the battery device. In the production process of the battery device, it is usually necessary to test the battery cell for charging and discharging. In order to more realistically simulate the restraint effect of the box on the battery cell in the battery device, it is necessary to use a clamping device to apply a squeezing force to the battery cell when testing the battery cell.

[0043] As the capacity of battery devices continues to increase, the volume and weight of battery cells in the battery devices are also increasing, and the clamping and testing process of battery cells is becoming more and more difficult. In particular, it is more difficult for workers to transport battery cells during the clamping and testing process, resulting in low working efficiency of the battery cell clamping device.

[0044] In order to improve the working efficiency of the clamping device of the battery cell, some embodiments of the present application provide a clamping device of the battery cell, which is used to squeeze the battery cell. The clamping device of the battery cell includes a clamp, a hoisting mechanism and a squeezing mechanism. The clamp includes a first clamping member and a second clamping member connected to each other, the first clamping member and the second clamping member are arranged oppositely along a first direction, and the battery cell is clamped between the first clamping member and the second clamping member; the hoisting mechanism is used to hoist the clamp holding the battery cell; the squeezing mechanism includes a bearing platform and an extruder, the bearing platform is used to carry the clamp, the first clamping member is placed on the bearing platform, and the output end of the extruder can act on the second clamping member and drive the second clamping member to approach the first clamping member. In the above structure, the hoisting mechanism can hoist the clamp holding the battery cell onto the bearing platform, so that the extruder applies pressure to the battery cell clamped between the first clamping member and the second clamping member to achieve the clamping of the battery cell, reduce the workload of transporting the clamp holding the battery cell to the bearing platform, and improve the working efficiency of the clamping device of the battery cell.

[0045] The clamping device for battery cells disclosed in the embodiment of the present application can be applied to the testing process of battery cells, and can also be applied to other processes of battery cells. For example, the clamping device for battery cells in the embodiment of the present application can also be used in the formation process or the injection process; specifically, in the injection process, the injection equipment injects the electrolyte into the interior of the battery cell at high pressure and high speed, thereby causing the internal pressure of the battery cell to increase, and the clamping device for battery cells in the embodiment of the present application can apply pressure to the battery cell from the outside to offset the internal pressure of the battery cell and reduce the deformation of the battery cell.

[0046] Of course, the battery cell clamping device of the embodiment of the present application can be used to apply pressure to the battery cell, and can also be used to apply pressure to other parts to be pressurized during the production process of the battery device.

[0047] The technical solutions of the battery cell clamping device and the testing equipment provided in the specific implementation manner of the present application are further described below.

[0048] Some embodiments of the present application provide a battery cell clamping device, such as Figure 1As shown, the battery cell clamping device is used to extrude the battery cell 10, and the battery cell clamping device includes a clamp 1, a hoisting mechanism 2 and an extrusion mechanism 3. The clamp 1 includes a first clamping member 11 and a second clamping member 12 connected to each other, the first clamping member 11 and the second clamping member 12 are arranged relatively along a first direction Z, and the battery cell 10 is clamped between the first clamping member 11 and the second clamping member 12; the hoisting mechanism 2 is used to hoist the clamp 1 clamping the battery cell 10; the extrusion mechanism 3 includes a carrying platform 31 and an extruder 32, the carrying platform 31 is used to carry the clamp 1, the first clamping member 11 is placed on the carrying platform 31, and the output end of the extruder 32 can act on the second clamping member 12 and drive the second clamping member 12 to approach the first clamping member 11.

[0049] The clamp 1 may be an apparatus for clamping a battery cell 10, which directly contacts the battery cell 10 and applies a force to the battery cell 10. The first clamp 11 and the second clamp 12 are two components arranged opposite to each other, which can be spaced relatively along the first direction Z, and clamp the battery cell 10 from both sides to apply a squeezing force. The battery cell 10 is clamped between the first clamp 11 and the second clamp 12 arranged opposite to each other along the first direction Z, so that the first clamp 11 and the second clamp 12 can approach each other along the first direction Z under the action of an external force, so as to clamp the battery cell 10.

[0050] The hoisting mechanism 2 may be a mechanism for hoisting the battery cell 10 . By providing the hoisting mechanism 2 , the hoisting mechanism 2 can hoist the battery cell 10 onto the carrying platform 31 .

[0051] The squeezing mechanism 3 may be a mechanism for applying force to the clamp 1 holding the battery cell 10 to achieve squeezing. The carrying platform 31 may be a device that plays a bearing role in the squeezing mechanism 3, and the clamp 1 holding the battery cell 10 is placed on the carrying platform 31, so that the squeezing machine 32 applies force to the clamp 1 holding the battery cell 10 to squeeze the battery cell 10.

[0052] The extruder 32 may be a device for providing a force on the battery cell 10. By placing the first clamping member 11 of the clamp 1 on the carrying platform 31, the output end of the extruder 32 acts on the second clamping member 12, so that the extruder 32 can drive the second clamping member 12 to approach the first clamping member 11, so that the second clamping member 12 and the first clamping member 11 clamp the battery cell 10 along the first direction Z.

[0053] In the above structure, the lifting mechanism 2 can lift the clamp 1 holding the battery cell 10 to the carrying platform 31, so that the extruder 32 can apply pressure to the battery cell 10 clamped between the first clamp 11 and the second clamp 12, thereby clamping the battery cell 10, reducing the workload of transporting the clamp 1 holding the battery cell 10 to the carrying platform 31 and improving the working efficiency of the battery cell clamping device.

[0054] In some embodiments, the extruder 32 includes an extrusion rod 321, a connecting rod 322 and a first driver (not shown in the figure), the connecting rod 322 is connected to the extrusion rod 321 and the output end of the first driver, and the extrusion rod 321 can press the second clamping member 12 along the first direction Z under the drive of the first driver.

[0055] The squeezing rod 321 may be a rod-shaped member for contacting and applying a force to the clamp 1 holding the battery cell 10. The first driver may be a power source for providing the squeezing machine 32 with a squeezing force for squeezing the battery cell 10. The connecting rod 322 may be a rod-shaped member for connecting the output end of the first driver with the squeezing rod 321 in a transmission manner.

[0056] By connecting the connecting rod 322 between the extrusion rod 321 and the output end of the first driver, the force output by the output end of the first driver can be transmitted to the extrusion rod 321, so that the extrusion rod 321 applies a force to the clamp 1 that clamps the battery cell 10, so that the extrusion rod 321 can press the second clamping member 12 along the first direction Z under the drive of the first driver.

[0057] Since the first clamping member 11 and the second clamping member 12 are arranged opposite to each other along the first direction Z, and the battery cell 10 is located between the first clamping member 11 and the second clamping member 12, when the extrusion rod 321 presses the second clamping member 12 along the first direction Z driven by the first driver, the second clamping member 12 can approach the first clamping member 11 along the first direction Z to clamp the battery cell 10.

[0058] Exemplarily, the first driver may be fixed on the machine body 4 , so that the output end of the first driver can drive the carrying platform 31 to move relative to the machine body 4 .

[0059] The first driver may be an electric screw that can drive the connecting rod 322 to move along the first direction Z. For example, the motor in the electric screw may be a servo motor that can output relatively accurate displacement and force, so as to relatively accurately control the magnitude of the extrusion force on the battery cell 10 .

[0060] In some embodiments, the battery cell clamping device further includes a body 4 , which is provided with a guide hole 41 extending along the first direction Z, the connecting rod 322 slides through the guide hole 41 , and the output end of the first driver is connected to the extrusion rod 321 through the connecting rod 322 .

[0061] The body 4 may be the main structure of the battery cell clamping device, which is used to set mechanisms such as the hoisting mechanism 2 and the squeezing mechanism 3.

[0062] The guide hole 41 may be a hole-shaped structure in the body 4 for guiding and limiting the moving direction of the connecting rod 322. By extending the guide hole 41 along the first direction Z, and sliding the connecting rod 322, whose two ends are respectively connected to the extrusion rod 321 and the first driver, through the guide hole 41, the movement of the connecting rod 322 is performed along the first direction Z, so that the connecting rod 322 can drive the extrusion rod 321 to move along the first direction Z, so that the extrusion rod 321 can extrude the second clamping member 12 along the first direction Z, so that the second clamping member 12 can approach the first clamping member 11 along the first direction Z, and the battery cell 10 is squeezed.

[0063] In some embodiments, the battery cell clamping device further includes a second driver (not shown in the figure), the carrying platform 31 is movably disposed on the body 4 , and the output end of the second driver is drivingly connected to the carrying platform 31 .

[0064] The second driver may be a driver for providing driving force for the transfer of the carrying platform 31. The carrying platform 31 is movably disposed on the machine body 4, which may mean that the carrying platform 31 can be transferred on the machine body 4, so that the clamp 1 holding the battery cell 10 carried by the carrying platform 31 can be transferred to a preset position by the carrying platform 31 for extrusion. By connecting the output end of the second driver to the carrying platform 31, the second driver can drive the carrying platform 31 to move, so as to move the clamp 1 holding the battery cell 10 on the carrying platform 31 to a preset position.

[0065] Exemplarily, the second driver may be fixed on the machine body 4 , so that the output end of the second driver can drive the carrying platform 31 to move relative to the machine body 4 .

[0066] The second driver may include an electric screw that can drive the carrying platform 31 to translate on the machine body 4. For example, the motor in the electric screw may be a servo motor that can output relatively accurate displacement and force, so as to relatively accurately control the position of the clamp 1 holding the battery cell 10 on the carrying platform 31.

[0067] In some embodiments, a first slide rail 42 is disposed on the machine body 4 , and the carrying platform 31 is slidably connected to the first slide rail 42 .

[0068] By arranging the first slide rail 42 on the machine body 4 and making the carrying platform 31 slidably connected to the first slide rail 42 , the carrying platform 31 can move smoothly relative to the machine body 4 .

[0069] Exemplarily, the first slide rail 42 is extended along a direction perpendicular to the first direction Z, so that the carrying platform 31 connected to the first slide rail 42 can move in a plane perpendicular to the first direction Z.

[0070] In some embodiments, the battery cell clamping device also includes a controller (not shown in the figure) and a second pressure sensor (not shown in the figure). The second pressure sensor is clamped between the supporting platform 31 and the body 4, and the controller is electrically connected to the second pressure sensor and the extruder 32.

[0071] The second pressure sensor may be a sensor for detecting the squeezing force exerted on the battery cell 10. By sandwiching the second pressure sensor between the carrying platform 31 and the body 4 along the first direction Z, the squeezing force exerted on the battery cell 10 on the carrying platform 31 will be transmitted to the second pressure sensor, so that the staff can more conveniently know the squeezing force exerted on the battery cell 10.

[0072] By electrically connecting the controller with the second pressure sensor and the extruder 32 , the controller can control whether the extruder 32 continues to extrude the battery cell 10 according to the pressure measured by the second pressure sensor, which is beneficial to maintaining a stable extrusion force on the battery cell 10 .

[0073] In some embodiments, the controller may be a centralized or distributed controller. For example, the controller may be a single single-chip microcomputer or may be composed of multiple distributed single-chip microcomputers. The single-chip microcomputer may run a control program to control the extruder 32 to realize its function.

[0074] In some embodiments, the lifting mechanism 2 includes a bracket 21, an arm 22 and a lifting module 23, the bracket 21 is connected to the body 4, the arm 22 is rotatably connected to the bracket 21, the lifting module 23 is movably connected to the arm 22, and the lifting module 23 is used to lift the clamp 1 holding the battery cell 10.

[0075] The bracket 21 may be a frame structure in the hanging mechanism 2, which is used to support the hanging mechanism 2. By connecting the bracket 21 to the machine body 4, the hanging mechanism 2 and the extrusion mechanism 3 are both arranged on the machine body 4, so that the hanging mechanism 2 and the extrusion mechanism 3 share the same machine body 4, which is conducive to reducing the cost increase caused by the additional machine base.

[0076] The suspension arm 22 may be an arm structure connected to the bracket 21, which is rotatably connected to the bracket 21. The lifting module 23 may be a module for lifting the fixture 1 holding the battery cell 10. By rotatably connecting the suspension arm 22 to the bracket 21 and movably connecting the lifting module 23 to the suspension arm 22, the lifting module 23 can be transferred over a larger range, so that the fixture 1 holding the battery cell 10 lifted by the lifting module 23 can be transferred over a larger range.

[0077] Exemplarily, the bracket 21 is extended along the first direction Z, and the suspension arm 22 is extended along a direction perpendicular to the first direction Z, so that the clamp 1 holding the battery cell 10 lifted by the lifting module 23 can move on the carrying platform 31 .

[0078] In some embodiments, the lifting module 23 may be an electric hoist, which moves along the arm 22 via an electric roller, and the electric hoist may lift the fixture 1 holding the battery cell 10 via a hook or a suction cup. For example, the suction cup may be an electromagnetic suction cup or a vacuum suction cup.

[0079] In some embodiments, a centering mechanism 35 is disposed on the carrying platform 31 , and the centering mechanism 35 is used to move the clamp 1 holding the battery cell 10 to a position along the first direction Z opposite to the output end of the extruder 32 .

[0080] The centering mechanism 35 may be a mechanism for moving the clamp 1 holding the battery cell 10 to a position opposite to the output end of the extruder 32 along the first direction Z. By providing the centering mechanism 35, the clamp 1 holding the battery cell 10 can reach a position opposite to the output end of the extruder 32 along the first direction Z, so that the extruder 32 can extrude the clamp 1 holding the battery cell 10.

[0081] In some embodiments, reference Figure 2 The centering mechanism 35 includes a pushing member 351, a second slide rail 352, a third slide rail 353, a third driver (not shown in the figure) and a fourth driver (not shown in the figure). The second slide rail 352 extends along the second direction X, and the third slide rail 353 extends along the third direction Y. The first direction Z, the second direction X and the third direction Y are all perpendicular to each other; the second slide rail 352 is arranged on the carrying platform 31, the third slide rail 353 is slidably connected to the second slide rail 352, the pushing member 351 is slidably connected to the third slide rail 353, the output end of the third driver is transmission-connected to the third slide rail 353, the output end of the fourth driver is transmission-connected to the pushing member 351, and the pushing member 351 is used to push the clamp 1 holding the battery cell 10 to move.

[0082] The pusher 351 may be a member for pushing the clamp 1 holding the battery cell 10 to move. The second slide rail 352 may be a slide rail extending along the second direction X and disposed on the carrying platform 31. The third slide rail 353 may be a slide rail extending along the third direction Y and slidably connected to the second slide rail 352. By slidably connecting the pusher 351 to the third slide rail 353, the pusher 351 can move along the second direction X and the third direction Y relative to the carrying platform 31.

[0083] The third driver may be a driver for driving the third slide rail 353 to move along the second slide rail 352, and the fourth driver may be a driver for driving the pusher 351 to move along the third slide rail 353. By connecting the output end of the third driver to the third slide rail 353 and the output end of the fourth driver to the pusher 351, the pusher 351 can drive the clamp 1 holding the battery cell 10 to move along the second direction X and the third direction Y under the driving of the third driver and the fourth driver.

[0084] By arranging the first direction Z, the second direction X and the third direction Y perpendicularly to each other, the clamp 1 holding the battery cell 10 can reach any position in a plane perpendicular to the first direction Z under the push of the pushing member 351, so that the pushing member 351 can push the clamp 1 holding the battery cell 10 to reach directly below the output end of the extruder 32 under the drive of the third driver and the fourth driver.

[0085] In some embodiments, reference Figure 3 The pushing members 351 are arranged in pairs, each pair of pushing members 351 includes two pushing members 351 arranged opposite to each other, and the two pushing members 351 in each pair of pushing members 351 can clamp the clamp 1 clamping the battery cell 10 .

[0086] By arranging the pushing members 351 in pairs and making the two pushing members 351 in each pair of pushing members 351 clamp the clamp 1 holding the battery cell 10, the clamp 1 holding the battery cell 10 can be clamped and fixed by the pushing members 351 arranged in pairs, thereby reducing the possibility of the clamp 1 holding the battery cell 10 being offset when the extruder 32 squeezes the clamp 1 holding the battery cell 10.

[0087] In some embodiments, the pushing member 351 includes a seat body 3511 and a push handle 3512, the push handle 3512 is detachably connected to the seat body 3511, the seat body 3511 is slidably connected to the third slide rail 353 and is transmission connected to the output end of the fourth driver, and the push handle 3512 is used to push the clamp 1 that clamps the battery cell 10.

[0088] The seat body 3511 can be a support for the pushing member 351, which is used to set other components in the pushing member 351. By making the seat body 3511 slidably connected to the third slide rail 353 and transmission connected to the output end of the fourth drive, the seat body 3511 can drive other components in the pushing member 351 to move along the third slide rail 353.

[0089] By detachably connecting the push handle 3512 to the seat body 3511 , the push handle 3512 can be detached and replaced, so that the push handle 3512 can be adapted to different types of clamps 1 by replacement, which is beneficial to improving the adaptability of the clamping device of the battery cell.

[0090] Exemplarily, the push handle 3512 can be detachably connected to the seat body 3511 by a locking bolt, so that the push handle 3512 is easy to disassemble and adjust.

[0091] In some embodiments, the clamping device of the battery cell also includes a controller, and the clamp 1 also includes a third clamping member 13 and a first pressure sensor 14, the third clamping member 13 is connected to the side of the second clamping member 12 away from the first clamping member 11, the first pressure sensor 14 is clamped between the second clamping member 12 and the third clamping member 13, and the controller is electrically connected to the first pressure sensor 14 and the extruder 32.

[0092] The third clamping member 13 may be a sensor for clamping the first pressure sensor 14 in the clamp 1 so as to detect the extrusion force exerted on the battery cell 10. By connecting the third clamping member 13 to the side of the second clamping member 12 away from the first clamping member 11, and clamping the first pressure sensor 14 between the second clamping member 12 and the third clamping member 13, the force exerted by the extruder 32 can be transmitted to the battery cell 10 through the third clamping member 13, the first pressure sensor 14, and the second clamping member 12 in sequence.

[0093] The first pressure sensor 14 may be a sensor for detecting the squeezing force exerted on the battery cell 10. By clamping the first pressure sensor 14 between the second clamping member 12 and the third clamping member 13 along the first direction Z, the squeezing force exerted on the battery cell 10 is transmitted to the first pressure sensor 14, so that the staff can more conveniently know the squeezing force exerted on the battery cell 10.

[0094] By electrically connecting the controller with the first pressure sensor 14 and the extruder 32 , the controller can control whether the extruder 32 continues to extrude the battery cell 10 according to the pressure measured by the first pressure sensor 14 , which helps to keep the extrusion force on the battery cell 10 stable.

[0095] Some embodiments of the present application further provide a test device for a battery cell 10 , wherein the test device for the battery cell 10 comprises a battery cell clamping device provided by any of the above technical solutions, and the battery cell clamping device is used to squeeze the battery cell 10 .

[0096] Some embodiments of the present application provide a battery cell clamping device, which includes a clamp 1, a hoisting mechanism 2, an extrusion mechanism 3 and a controller. The clamp 1 includes a first clamping member 11, a second clamping member 12, a third clamping member 13 and a first pressure sensor 14 that are interconnected. The battery cell 10 is clamped between the first clamping member 11 and the second clamping member 12. The first pressure sensor 14 is clamped between the second clamping member 12 and the third clamping member 13. The hoisting module 23 in the hoisting mechanism 2 hoists the clamp 1 holding the battery cell 10 to a carrying platform 31 of the extrusion mechanism 3. The carrying platform 31 transfers the clamp 1 holding the battery cell 10 to directly below the extruder 32. The extrusion rod 321 in the extruder 32 is driven by the first driver to abut against the third clamping member 13 to apply force to the battery cell 10. In the above structure, the lifting mechanism 2 can lift the clamp 1 holding the battery cell 10 to the carrying platform 31, so that the extruder 32 can apply pressure to the battery cell 10 clamped between the first clamp 11 and the second clamp 12, thereby clamping the battery cell 10, reducing the workload of transporting the clamp 1 holding the battery cell 10 to the carrying platform 31 and improving the working efficiency of the battery cell clamping device.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery cell clamping device, characterized in that: Used to squeeze a battery cell, the battery cell clamping device comprises: A clamp, comprising a first clamp and a second clamp connected to each other, wherein the first clamp and the second clamp are arranged opposite to each other along a first direction, and the battery cell is clamped between the first clamp and the second clamp; A hoisting mechanism, used for hoisting the clamp holding the battery cell; The extrusion mechanism includes a carrying platform and an extruder, wherein the carrying platform is used to carry the clamp, the first clamping member is placed on the carrying platform, and the output end of the extruder can act on the second clamping member and drive the second clamping member to approach the first clamping member; a centering mechanism is provided on the carrying platform, and the centering mechanism is used to move the clamp clamping the battery cell to a position opposite to the output end of the extruder along the first direction.

2. The battery cell clamping device according to claim 1, characterized in that: The extruder includes an extrusion rod, a connecting rod and a first driver. The connecting rod is connected to the extrusion rod and an output end of the first driver. The extrusion rod can press the second clamping member along the first direction under the drive of the first driver.

3. The battery cell clamping device according to claim 2, characterized in that: The battery cell clamping device further comprises a body, the body is provided with a guide hole extending along the first direction, the connecting rod slides through the guide hole, and the output end of the first driver is connected to the extrusion rod through the connecting rod.

4. The battery cell clamping device according to claim 3, characterized in that: The battery cell clamping device further comprises a second driver, the carrying platform is movably arranged on the machine body, and the output end of the second driver is drivingly connected to the carrying platform.

5. The battery cell clamping device according to claim 4, characterized in that: The machine body is provided with a first slide rail, and the bearing platform is slidably connected to the first slide rail.

6. The battery cell clamping device according to claim 4, characterized in that: The battery cell clamping device further comprises a controller and a second pressure sensor, wherein the second pressure sensor is clamped between the carrying platform and the machine body, and the controller is electrically connected to the second pressure sensor and the extruder.

7. The battery cell clamping device according to claim 3, characterized in that: The lifting mechanism includes a bracket, a lifting arm and a lifting module, the bracket is connected to the body, the lifting arm is rotatably connected to the bracket, the lifting module is movably connected to the lifting arm, and the lifting module is used to lift the clamp holding the battery cell.

8. The battery cell clamping device according to claim 1, characterized in that: The centering mechanism includes a pushing member, a second slide rail, a third slide rail, a third driver and a fourth driver, the second slide rail extends along a second direction, the third slide rail extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the second slide rail is arranged on the bearing platform, the third slide rail is slidably connected to the second slide rail, the pushing member is slidably connected to the third slide rail, the output end of the third driver is transmission-connected to the third slide rail, the output end of the fourth driver is transmission-connected to the pushing member, and the pushing member is used to push the clamp holding the battery cell to move.

9. The battery cell clamping device according to claim 8, characterized in that: The pushing members are arranged in pairs, each pair of the pushing members includes two pushing members arranged opposite to each other, and the two pushing members in each pair of the pushing members can clamp the clamp that clamps the battery cell.

10. The battery cell clamping device according to claim 8, characterized in that: The pushing member includes a seat body and a push handle, the push handle is detachably connected to the seat body, the seat body is slidably connected to the third slide rail and is transmission-connected to the output end of the fourth driver, and the push handle is used to push the clamp that clamps the battery cell.

11. The battery cell clamping device according to claim 1, characterized in that: The battery cell clamping device also includes a controller, and the clamp also includes a third clamping member and a first pressure sensor, the third clamping member is connected to a side of the second clamping member away from the first clamping member, the first pressure sensor is clamped between the second clamping member and the third clamping member, and the controller is electrically connected to the first pressure sensor and the extruder.

12. A battery cell testing device, characterized in that: The invention comprises a battery cell clamping device as claimed in any one of claims 1 to 11, wherein the battery cell clamping device is used for squeezing the battery cell.

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