Battery cell clamping structure and battery cell clamping system
By combining the drive mechanism and the pressure sensor, the problem of poor pressure control accuracy in the battery cell testing fixture is solved, and the automatic clamping force stability and battery cell consistency of the battery cell clamping structure are realized, thereby improving the accuracy and uniform force distribution of battery cell testing.
Patent Information
- Application Number
- CN202423104949.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The pressure control accuracy of existing battery cell testing fixtures is poor, which cannot ensure the consistency of the same type of battery cell.
The system employs a combination of a drive mechanism, a connecting mechanism, a guide post assembly, a cell pressure plate, and a pressure sensor to achieve automatic and stable clamping force. The clamping pressure is adjusted based on feedback from the pressure sensor to ensure high-precision clamping force and consistency between the cell and the clamping force.
This achieved stable clamping force values in the battery cell clamping structure, improved control accuracy and battery cell consistency, and ensured uniform force distribution to the battery cells during testing.
Smart Images
Figure CN223841941U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing tooling technology, and more specifically, to a battery cell clamping structure and a battery cell clamping system. Background Technology
[0002] Currently, testing fixtures for battery cell performance generally consist of a substrate, a clamping assembly, and a horizontal retainer. The clamping assembly is connected to the substrate via guide posts, forming a clamping position for holding the battery cell. The horizontal retainer is located between the guide posts and the clamping assembly to keep the battery cell in the clamping position horizontal. This ensures that the substrate remains horizontal throughout the entire test, resulting in uniform force on the battery cell. Although commonly used testing fixtures provide continuous pressure support for the battery cell, the pressure can only be controlled manually by tightening screws, resulting in poor precision and making it impossible to ensure consistency of the same type of battery cell. Utility Model Content
[0003] The purpose of this application is to provide a battery cell clamping structure and battery cell clamping system, which can achieve the technical effects of ensuring stable clamping force, improving control accuracy and battery cell consistency.
[0004] In a first aspect, this application provides a battery cell clamping structure, including a drive mechanism, a connection mechanism, a guide post assembly, a battery cell pressure plate, and a pressure sensor;
[0005] The driving mechanism is connected to the cell pressure plate via the connecting mechanism. The guide post assembly includes multiple guide posts, which are matched and installed with the driving mechanism. The cell pressure plate is slidably sleeved on the multiple guide posts, and the cell pressure plate slides along the axial direction of the guide posts.
[0006] The cell pressure plate is provided with a lower pressure plate, and the lower pressure plate and the driving mechanism are respectively provided on both sides of the cell pressure plate. A cell clamping position is provided between the lower pressure plate and the cell pressure plate.
[0007] The pressure sensor is disposed between the cell pressure plate and the connecting mechanism.
[0008] In the above implementation process, the cell clamping structure installs the cell pressure plate to the drive mechanism through a connecting mechanism. The cell pressure plate can slide along the axial direction of the guide post, clamping or releasing the cell to be processed at the cell clamping position. A pressure sensor is set between the cell pressure plate and the connecting mechanism. The pressure sensor can obtain the clamping pressure data applied to the cell to be processed, and thus can make feedback adjustments according to the preset clamping pressure value and clamping pressure data to achieve automatic clamping force stability of the cell clamping structure. This ensures high-precision pressure value during clamping, thereby ensuring the consistency of the same type of cell. Therefore, the cell clamping structure can achieve the technical effects of ensuring stable clamping force, improving control accuracy, and ensuring cell consistency.
[0009] Furthermore, the cell clamping structure also includes a fixing plate, which is mounted on the drive mechanism, and the plurality of guide posts are mounted on the fixing plate.
[0010] In the above implementation process, a fixed plate is set on the drive mechanism, and guide posts are installed on the fixed plate, which can improve the stability of the drive mechanism when it drives the cell pressure plate to slide.
[0011] Furthermore, the guide post assembly also includes a plurality of guide sleeves, which are matched and installed with the guide post, are mounted on the cell pressure plate, and are slidable along the axial direction of the guide post.
[0012] In the above implementation process, by setting the guide sleeve and guide post to be installed together, the cell pressure plate can slide more smoothly along the axial direction of the guide post, avoiding jamming.
[0013] Furthermore, the connecting mechanism includes a fixed shaft and a rotating shaft. The fixed shaft is connected to the driving mechanism, one end of the rotating shaft is connected to the cell pressure plate, and the other end of the rotating shaft is rotatably connected to the fixed shaft.
[0014] In the above implementation process, the connecting mechanism connects and installs the drive mechanism and the cell pressure plate through a fixed shaft and a rotating shaft. Thus, when the drive mechanism drives the cell pressure plate to slide, the cell pressure plate can rotate and adjust along the rotation axis to ensure that the cell pressure plate remains at a certain level when sliding.
[0015] Furthermore, the fixing plate is provided with a through hole, and the fixing shaft is connected to the driving mechanism through the through hole.
[0016] Furthermore, the cell clamping structure also includes a connecting post, and the lower pressure plate is fixedly installed on the cell pressure plate through the connecting post.
[0017] In the above process, the lower pressure plate is installed on the cell pressure plate through the connecting post, and the cell to be processed can be placed in the gap left by the connecting post, thereby leaving a cell clamping position between the lower pressure plate and the cell pressure plate for the cell to be processed to be placed.
[0018] Furthermore, the driving mechanism is a cylinder mechanism.
[0019] Secondly, this application provides a battery cell clamping system, including a main frame and a battery cell clamping structure as described in any of the first aspects. The battery cell clamping structure is installed inside the main frame. The main frame is provided with a battery cell clamping platform. The battery cell clamping platform is provided with a through hole, and the lower pressure plate extends out of the battery cell clamping platform through the through hole.
[0020] In the above implementation process, the cell clamping platform on the main frame is used to place the cells to be processed. The cell pressure plate is driven down by the drive mechanism, thereby driving the lower pressure plate to move downward, and then clamping the cells to be processed through the lower pressure plate.
[0021] Furthermore, the cell clamping system also includes a start switch, a reset switch, and an emergency stop switch, which are disposed on the main frame and are respectively connected to the drive mechanism.
[0022] In the above implementation process, by setting a start switch, a reset switch and an emergency stop switch on the main frame, the start, reset and emergency stop of the cell clamping structure are controlled, thereby achieving effective control of the cell clamping structure.
[0023] Furthermore, the cell clamping system also includes a pressure display mechanism, which is disposed on the main frame and connected to the pressure sensor.
[0024] In the above process, the clamping pressure during cell clamping is displayed in real time through a pressure display mechanism, which facilitates operation and control by the operator.
[0025] Other features and advantages disclosed in this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described technology disclosed in this application.
[0026] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the battery cell clamping structure provided in the embodiments of this application;
[0029] Figure 2 This is a schematic diagram of the battery cell clamping system provided in an embodiment of this application.
[0030] Reference numerals: Drive mechanism 100; Fixed plate 110; Connecting mechanism 200; Fixed shaft 210; Rotating shaft 220; Guide post assembly 300; Guide post 310; Guide sleeve 320; Cell pressure plate 400; Lower pressure plate 410; Connecting post 420; Pressure sensor 500; Main frame 10; Cell clamping platform 11; Start switch 12; Reset switch 13; Emergency stop switch 14; Pressure display mechanism 15. Detailed Implementation
[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0032] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0033] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0035] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0036] Generally, commonly used battery cell performance testing fixtures consist of a substrate, a clamping assembly, and a horizontal retainer. The clamping assembly is connected to the substrate via guide posts, forming a clamping position for holding the battery cell. The horizontal retainer is located between the guide posts and the clamping assembly to keep the battery cell in the clamping position horizontal. This ensures that the substrate remains horizontal throughout the entire test, resulting in uniform force on the battery cell. Although commonly used testing fixtures provide continuous pressure support for the battery cell, the pressure can only be controlled manually by tightening the screws, resulting in poor precision and making it impossible to ensure consistency of the same type of battery cell.
[0037] To address the aforementioned technical problems, this application provides a battery cell clamping structure and system, which can be applied to the clamping process in battery cell performance testing to ensure stable clamping force, improve control accuracy, and enhance battery cell consistency. Please refer to... Figure 1 , Figure 1 This is a schematic diagram of the battery cell clamping structure provided in the embodiment of this application. The battery cell clamping structure includes a drive mechanism 100, a connecting mechanism 200, a guide post assembly 300, a battery cell pressure plate 400, and a pressure sensor 500.
[0038] For example, the drive mechanism 100 is connected to the cell pressure plate 400 via the connection mechanism 200. The guide post assembly 300 includes a plurality of guide posts 310, which are matched and installed with the drive mechanism 100. The cell pressure plate 400 is slidably sleeved on the plurality of guide posts 310, and the cell pressure plate 400 slides along the axial direction of the guide posts 310.
[0039] The connection mechanism 200 can be a fixed connection, a hinged connection, or other connection methods, which are only examples and not limitations. The drive mechanism 100 is connected to the cell pressure plate 400 through the connection mechanism 200, so that the cell pressure plate 400 can slide along the axial direction of the guide post 310 under the drive of the drive mechanism 100, thereby performing a clamping operation on the cell to be processed.
[0040] For example, the cell pressure plate 400 is provided with a lower pressure plate 410, and the lower pressure plate 410 and the drive mechanism 100 are respectively provided on both sides of the cell pressure plate 400, and a cell clamping position is provided between the lower pressure plate 410 and the cell pressure plate 400.
[0041] The battery cell to be processed can be placed in the battery cell clamping position between the battery cell pressure plate 400 and the lower pressure plate 410. The drive mechanism 100 drives the battery cell pressure plate 400 and the lower pressure plate 410 to move, thereby clamping the battery cell to be processed in the battery cell clamping position.
[0042] For example, the pressure sensor 500 is disposed between the cell pressure plate and the connecting mechanism; the pressure sensor 500 can provide real-time feedback of the transmission pressure data applied by the drive mechanism 100 to the cell pressure plate 400, thereby obtaining the clamping pressure data applied to the cell to be processed, so that feedback adjustment can be performed according to the preset clamping pressure value and clamping pressure data, thereby realizing the stability of the automatic clamping force value of the cell clamping structure, thereby clamping the cell to be processed to be produced, ensuring the high-precision pressure value during clamping, and thus ensuring the consistency of the same type of cell.
[0043] For example, the cell clamping structure also includes a pressure control mechanism, which is connected to a pressure sensor and a drive mechanism respectively. The pressure control mechanism controls the operation of the drive mechanism based on the pressure value returned by the pressure sensor.
[0044] In some embodiments, the cell clamping structure mounts the cell pressure plate 400 to the drive mechanism 100 via a connecting mechanism 200. The cell pressure plate 400 can slide along the axial direction of the guide post 310, allowing it to clamp or release the cells to be processed at the cell clamping position. A pressure sensor 500 is placed between the cell pressure plate and the connecting mechanism. The pressure sensor 500 can obtain the clamping pressure data applied to the cells to be processed, and can then perform feedback adjustment based on a preset clamping pressure value and clamping pressure data to achieve automatic clamping force stability of the cell clamping structure. This ensures high-precision pressure values during clamping, thereby ensuring the consistency of cells of the same type. Thus, the cell clamping structure can achieve the technical effects of ensuring stable clamping force, improving control accuracy, and ensuring cell consistency.
[0045] For example, the cell clamping structure also includes a fixing plate 110, which is mounted on the drive mechanism 100, and a plurality of guide posts 310 are mounted on the fixing plate 110.
[0046] For example, a fixing plate 110 is provided on the drive mechanism 100, and the guide post 310 is installed through the fixing plate 110, which can improve the stability of the drive mechanism 100 when it drives the cell pressure plate 400 to slide.
[0047] For example, the guide post assembly 300 also includes a plurality of guide sleeves 320, which are matched and installed with the guide post 310. The guide sleeves 320 are installed on the cell pressure plate 400 and can slide along the axial direction of the guide post 310.
[0048] For example, by setting the guide sleeve 320 to be installed in conjunction with the guide post 310, the cell pressure plate 400 can slide more smoothly along the axial direction of the guide post 310, thus avoiding jamming.
[0049] For example, the connecting mechanism 200 includes a fixed shaft 210 and a rotating shaft 220. The fixed shaft 210 is connected to the driving mechanism 100, one end of the rotating shaft 220 is connected to the cell pressure plate 400, and the other end of the rotating shaft 220 is rotatably connected to the fixed shaft 210.
[0050] For example, the connecting mechanism 200 connects and mounts the drive mechanism 100 and the cell pressure plate 400 through the fixed shaft 210 and the rotating shaft 220, so that when the drive mechanism drives the cell pressure plate 400 to slide, the cell pressure plate 400 can be rotated and adjusted along the rotation axis of the rotating shaft 220 to ensure that the cell pressure plate 400 remains at a certain level when sliding.
[0051] For example, the fixing plate 110 is provided with a through hole, and the fixing shaft 210 is connected to the drive mechanism 100 through the through hole.
[0052] For example, the cell clamping structure also includes a connecting post 420, and the lower pressure plate 410 is fixedly installed on the cell pressure plate 400 through the connecting post 420.
[0053] For example, the lower pressure plate 410 is mounted on the cell pressure plate 400 via the connecting post 420. The cell to be processed can be placed in the gap left by the connecting post 420, thereby leaving a cell clamping position between the lower pressure plate 410 and the cell pressure plate 400 for the cell to be processed to be placed.
[0054] For example, the drive mechanism 100 is a cylinder mechanism.
[0055] Please see Figure 2 , Figure 2 This is a schematic diagram of the battery cell clamping system provided in the embodiment of this application. The battery cell clamping system includes a main frame 10 and a battery cell clamping structure. The battery cell clamping structure is installed inside the main frame 10. The main frame 10 is provided with a battery cell clamping platform 11. The battery cell clamping platform 11 is provided with a through hole, and the lower pressure plate extends out of the battery cell clamping platform 11 through the through hole.
[0056] For example, the cell clamping platform 11 on the main frame 10 is used to place the cells to be processed. The cell pressure plate 400 is pulled down by the drive mechanism 100, thereby driving the lower pressure plate 410 to move downward, and then the cells to be processed are clamped by the lower pressure plate 410.
[0057] Optionally, the pressure plate 410 is held when the set force value is reached and the cell to be processed is released after clamping is completed.
[0058] For example, the cell clamping system also includes a start switch 12, a reset switch 13 and an emergency stop switch 14, which are disposed on the main frame 10 and are respectively connected to the drive mechanism.
[0059] For example, by setting a start switch 12, a reset switch 13 and an emergency stop switch 14 on the main frame 10, the start, reset and emergency stop of the cell clamping structure can be controlled, thereby achieving effective control of the cell clamping structure.
[0060] For example, the cell clamping system also includes a pressure display mechanism 15, which is disposed on the main frame 10 and connected to the pressure sensor 500.
[0061] For example, the clamping pressure during cell clamping is displayed in real time by the pressure display mechanism 15, which facilitates operation control by the operator.
[0062] In some implementation scenarios, combined with Figure 1 and Figure 2The battery cell clamping structure and system shown are illustrated below. An example of the specific operation steps for this battery cell clamping system is as follows:
[0063] 1. Basic Structure: The battery cell performance fixture assembly machine includes a battery cell clamping system and an auxiliary system. The battery cell clamping system is mainly used to provide a stable preload for clamping the fixture. The auxiliary system includes a laser emitter and a lifting trolley. The lifting trolley is independent of the battery cell clamping system, which is the main body of the equipment, and is used to assist in lifting the fixture and samples. The laser emitter is integrated into the main body of the equipment and is used to provide a horizontal laser as a reference for the flatness of the clamping.
[0064] During the operation, the product model of the battery cell is first selected, and each part of the equipment is moved to the set position. The clamp is placed on the operating table of the battery cell clamping system by the operator, and the lower pressure plate is pressed down and held when the set force value is reached. After clamping is completed, it is released. Optionally, the battery cell clamping system can be used for clamping two steel clamps or three steel clamps (including pressure sensors).
[0065] 2. Basic Operations:
[0066] (1) Standby position: During operation, the operator selects the product or enters the preload and clamp size through the touch screen of the battery cell clamping system, and then clicks run. The lower plate moves forward and backward and up and down, and stops when it reaches the set position; or the lower plate can be moved to the appropriate position through the manual adjustment function of the interface.
[0067] (2) Assembly work: After placing the battery cell in the designated position, the lower pressure plate descends and the force value stabilizes in about 3-5 seconds.
[0068] (3) Torque locking: The lower pressure plate applies a set preload force to the clamp. After the force value stabilizes, the operator tightens the bolts at the four corners of the clamp.
[0069] (4) Force release: After completion, the pressure plate returns to the position before pressing down, and the battery cell is taken out from the side;
[0070] 3. Results Achieved: The cell clamping system can complete the assembly of two-piece steel clamps and three-piece steel clamps (including pressure sensors) with constant pressure values, which improves the traditional method of relying on differences in threaded locking force, improves the overall clamping accuracy and consistency, and thus provides a reliable foundation for subsequent cell performance testing.
[0071] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.
[0072] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.
[0073] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0074] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.
Claims
1. A battery cell clamping structure, characterized in that, Includes a drive mechanism, a connecting mechanism, a guide post assembly, a cell pressure plate, and a pressure sensor; The driving mechanism is connected to the cell pressure plate via the connecting mechanism. The guide post assembly includes multiple guide posts, which are matched and installed with the driving mechanism. The cell pressure plate is slidably sleeved on the multiple guide posts, and the cell pressure plate slides along the axial direction of the guide posts. The cell pressure plate is provided with a lower pressure plate, and the lower pressure plate and the driving mechanism are respectively provided on both sides of the cell pressure plate. A cell clamping position is provided between the lower pressure plate and the cell pressure plate. The pressure sensor is disposed between the cell pressure plate and the connecting mechanism.
2. The cell clamping structure according to claim 1, characterized in that, The cell clamping structure further includes a fixing plate, which is mounted on the drive mechanism, and the plurality of guide posts are mounted on the fixing plate.
3. The cell clamping structure according to claim 1 or 2, characterized in that, The guide post assembly also includes multiple guide sleeves, which are matched and installed with the guide post. The guide sleeves are installed on the cell pressure plate and can slide along the axial direction of the guide post.
4. The cell clamping structure according to claim 2, characterized in that, The connecting mechanism includes a fixed shaft and a rotating shaft. The fixed shaft is connected to the driving mechanism, one end of the rotating shaft is connected to the cell pressure plate, and the other end of the rotating shaft is rotatably connected to the fixed shaft.
5. The cell clamping structure according to claim 4, characterized in that, The fixing plate is provided with a through hole, and the fixing shaft is connected to the driving mechanism through the through hole.
6. The cell clamping structure according to claim 1, characterized in that, The cell clamping structure also includes a connecting post, and the lower pressure plate is fixedly installed on the cell pressure plate through the connecting post.
7. The cell clamping structure according to claim 1, characterized in that, The drive mechanism is a cylinder mechanism.
8. A battery cell clamping system, characterized in that, The device includes a main frame and a cell clamping structure as described in any one of claims 1 to 7. The cell clamping structure is installed inside the main frame. The main frame is provided with a cell clamping platform. The cell clamping platform is provided with a through hole, and the lower pressure plate extends out of the cell clamping platform through the through hole.
9. The cell clamping system according to claim 8, characterized in that, The cell clamping system also includes a start switch, a reset switch, and an emergency stop switch. The start switch, the reset switch, and the emergency stop switch are disposed on the main frame, and the start switch, the reset switch, and the emergency stop switch are respectively connected to the drive mechanism.
10. The cell clamping system according to claim 8, characterized in that, The cell clamping system also includes a pressure display mechanism, which is disposed on the main frame and connected to the pressure sensor.