Clamping device

Abstract

The utility model discloses a clamping device. The clamping device comprises a first clamping assembly, a first driving piece, a second clamping assembly and a second driving piece. The first clamping assembly is used for clamping one side of a battery cell, a mounting groove is formed in the first clamping assembly, the mounting groove is used for mounting the panel assembly, and the panel assembly is provided with a pressure sensor. The first driving part is connected with the first clamping assembly, and the first driving part is used for driving the first clamping assembly to extrude the battery cell, so that the pressure sensor can monitor the pressure of the first clamping assembly on the battery cell. The second clamping assembly and the first clamping assembly are oppositely arranged, and the second clamping assembly is used for clamping the other side of the battery cell. And the second driving piece is connected with the second clamping assembly and is used for driving the second clamping assembly to extrude the battery cell. The pressure applied to the battery cell by different parts of the first clamping assembly is the same, so that the pressure applied to different parts of the battery cell is the same, the condition that bubbles appear after the battery cell is vacuumized is reduced, and the performance of the battery cell is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a clamping device. BACKGROUND

[0002] In the soft package battery cell production process, the pressurizing and vacuumizing step is a very key link, which can remove the gas in the battery cell, make the internal pole piece diaphragm contact more closely, and reduce the lithium ion conduction distance and internal resistance in the charging and discharging process, so as to enhance the performance of the battery cell. Under normal circumstances, the soft package battery cell will be placed into a vacuum environment before packaging to perform vacuumizing and liquid injection processes. The soft package battery cell needs to be clamped and extruded by a special clamp during vacuumizing. This operation is to ensure that the aluminum plastic film is flat and not wrinkled during the vacuumizing process, and the pole piece and diaphragm inside the battery cell can be tightly attached, and good contact can be maintained in the subsequent charging and discharging process.

[0003] In related technologies, when clamping the battery cell package, due to different batches of battery cells, there may be irregular shapes or unevenness in some areas of the clamp. When extruding the battery cell, it cannot be pressurized with constant pressure, and the pressure on different parts of the battery cell may be different. It is not possible to determine whether the battery cell is well extruded and compressed, which may cause bubbles to appear after the battery cell is vacuumized, affecting performance and other issues. Too much pressure will cause abnormal liquid extraction, poor electrolyte infiltration, and too little pressure will cause the internal gas of the battery cell to be unable to be effectively extracted, affecting the performance of the battery cell. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a clamping device, which aims to solve the technical problem that the battery cell cannot be extruded with constant pressure in related technologies, causing bubbles to appear after the battery cell is vacuumized, affecting the performance of the battery cell.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model proposes a clamping device in the first aspect.

[0006] A clamping device for clamping a battery cell, comprising:

[0007] A first clamping assembly for clamping one side of the battery cell, a mounting slot is provided in the first clamping assembly, the mounting slot is used to install a panel assembly, and the panel assembly is provided with a pressure sensor;

[0008] A first driving member connected with the first clamping assembly, the first driving member is used to drive the first clamping assembly to extrude the battery cell, so that the pressure sensor can monitor the pressure of the first clamping assembly on the battery cell;

[0009] A second clamping assembly is arranged opposite to the first clamping assembly and used to clamp the other side of the battery cell; and

[0010] A second driving member is connected with the second clamping assembly and used to drive the second clamping assembly to press the battery cell.

[0011] In one of the embodiments, the panel assembly comprises a first panel, a second panel and a third panel, one end of the first panel is provided with a first recess, the other end of the first panel is provided with a second recess, one end of the second panel facing the first panel is provided with a first protrusion matched with the first recess, one end of the third panel facing the first panel is provided with a second protrusion matched with the second recess, the first protrusion is clamped in the first recess, and the second protrusion is clamped in the second recess.

[0012] In one of the embodiments, the plurality of pressure sensors comprises a first pressure sensor, a second pressure sensor and a third pressure sensor, the first pressure sensor is arranged on the first panel, the second pressure sensor is arranged on the second panel, and the third pressure sensor is arranged on the third panel.

[0013] In one of the embodiments, one end of the second panel away from the first protrusion is provided with a first clamping part, and the inner side wall of the mounting groove is formed with a first clamping groove matched with the first clamping part, and the first clamping part is clamped in the first clamping groove; and / or

[0014] one end of the third panel away from the second protrusion is provided with a second clamping part, and the inner side wall of the mounting groove is formed with a second clamping groove matched with the second clamping part, and the second clamping part is clamped in the second clamping groove.

[0015] In one of the embodiments, the first panel is provided with a third clamping part and a fourth clamping part, the inner side wall of the mounting groove is formed with a third clamping groove and a fourth clamping groove, the third clamping part is clamped in the third clamping groove, and the fourth clamping part is clamped in the fourth clamping groove.

[0016] In one of the embodiments, the panel assembly is detachably arranged in the mounting groove.

[0017] In one of the embodiments, the clamping device further comprises a mounting plate connected with the bottom of the first clamping assembly, the bottom of the first clamping assembly is provided with an opening, the opening is communicated with the mounting groove, and the mounting plate can seal the opening.

[0018] In one of the embodiments, the first clamping assembly comprises a first clamping plate and a first clamping support, the first clamping plate is connected with the first clamping support, the first clamping plate clamps one side of the battery cell, and the mounting groove is arranged in the first clamping plate.

[0019] The first clamping support is connected with the first driving member, and the first driving member drives the first clamping plate to press the battery cell.

[0020] In one of the embodiments, in the vertical direction, the mounting groove is arranged at the middle and the bottom of the first clamping assembly.

[0021] In one of the embodiments, the clamping device further comprises a controller, the controller is electrically connected with the first driving member and the pressure sensor respectively, the controller is used for receiving the pressure signal transmitted by the pressure sensor and controlling the driving pressure of the first driving member on the battery cell according to the pressure signal.

[0022] Beneficial effects:

[0023] The clamping device of the utility model is used for clamping battery cell, including first clamping assembly, first driving member, second clamping assembly and second driving member. First clamping assembly is used for clamping one side of battery cell, and the mounting groove is arranged in the first clamping assembly, and the mounting groove is used for installing panel assembly, and the panel assembly is provided with a plurality of pressure sensors. First driving member is connected with first clamping assembly, and first driving member is used for driving first clamping assembly to press battery cell, so that pressure sensor can monitor the pressure of first clamping assembly on battery cell. Second clamping assembly is oppositely arranged with first clamping assembly, and second clamping assembly is used for clamping the other side of battery cell. Second driving member, second driving member is connected with second clamping assembly, and second driving member is used for driving second clamping assembly to press battery cell. The clamping device can be inducted the pressure of first clamping assembly different parts on battery cell through a plurality of pressure sensors, and the extrusion pressure of first clamping assembly on battery cell is adjusted by first driving member, so that the pressure value of a plurality of pressure sensors is same. That is, the pressure of first clamping assembly different parts on battery cell is same, so that the pressure of battery cell different parts is same, reduces the situation that the bubble appears after battery cell is vacuumized, thereby improving the performance of battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is the front view of the clamping device of one embodiment of the utility model.

[0025] Fig. 2 It is the side view of the clamping device of one embodiment of the utility model.

[0026] Fig. 3 It is the internal structure diagram of the first clamping assembly of one embodiment of the utility model.

[0027] Wherein:

[0028] 10. The battery cell;

[0029] 100. The first clamping assembly; 110. The mounting groove;

[0030] 200. The panel assembly; 210. The first panel; 211. The first recess; 212. The second recess; 213. The third clamping portion; 214. The fourth clamping portion; 215. The third clamping groove; 216. The fourth clamping groove; 220. The second panel; 221. The first protrusion; 222. The first clamping portion; 224. The first clamping groove; 230. The third panel; 231. The second protrusion; 232. The second clamping portion; 233. The second clamping groove; 240. The first clamping plate; 250. The first clamping support; 260. The first pressure sensor; 270. The second pressure sensor; 280. The third pressure sensor;

[0031] 300. The first driving member;

[0032] 400. The second clamping assembly; 410. The second clamping plate; 420. The second clamping support;

[0033] 500. The second driving member;

[0034] 600. The mounting plate; 610. The opening;

[0035] 700. The air bag clamping support;

[0036] 800. The controller.

[0037] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0038] It should be understood that the specific embodiments described herein merely exemplify the present application and are not intended to limit the present application.

[0039] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0040] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be directly connected, can be indirectly connected through intermediate medium, can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] As Figs. 1 to 3As shown, in some embodiments, a clamping device is used for clamping the battery cell 10. The clamping device comprises a first clamping assembly 100, a first driving member 300, a second clamping assembly 400 and a second driving member 500. The first clamping assembly 100 is used for clamping one side of the battery cell 10, and a mounting groove 110 is formed in the first clamping assembly 100 for mounting a panel assembly 200, and the panel assembly 200 is provided with a pressure sensor. The first driving member 300 is connected with the first clamping assembly 100, and the first driving member 300 is used for driving the first clamping assembly 100 to press the battery cell 10, so that the pressure sensor can monitor the pressure of the first clamping assembly 100 on the battery cell 10. The second clamping assembly 400 is arranged opposite to the first clamping assembly 100, and the second clamping assembly 400 is used for clamping the other side of the battery cell 10. The second driving member 500 is connected with the second clamping assembly 400, and the second driving member 500 is used for driving the second clamping assembly 400 to press the battery cell 10.

[0043] The clamping device can sense the pressure of the first clamping assembly 100 on the battery cell 10 at different positions through multiple pressure sensors, and adjust the pressing pressure of the first clamping assembly 100 on the battery cell 10 through the first driving member 300, so that the pressure values of the multiple pressure sensors are the same. That is, the pressure of the first clamping assembly 100 on the battery cell 10 at different positions is the same, so that the pressure of the battery cell 10 at different positions is the same, reducing the situation that bubbles appear after the battery cell 10 is vacuumed, thereby improving the performance of the battery cell 10.

[0044] Specifically, the first driving member 300 and the second driving member 500 can be servo electric telescopic cylinders.

[0045] In some embodiments, the panel assembly 200 comprises a first panel 210, a second panel 220 and a third panel 230. One end of the first panel 210 is provided with a first recess 211, and the other end is provided with a second recess 212. The second panel 220 is provided with a first protrusion 221 at one end facing the first panel 210, and the third panel 230 is provided with a second protrusion 231 at one end facing the first panel 210. The first protrusion 221 is clamped in the first recess 211, and the second protrusion 231 is clamped in the second recess 212. Specifically, the first panel 210 can be an inner panel. The second panel 220 and the third panel 230 can be outer panels.

[0046] It should be noted that the clamping mode of the protrusions and the grooves can provide better mechanical connection strength, so that the second panel 220 and the third panel 230 are firmly connected to the first panel 210, ensuring that the first panel 210, the second panel 220 and the third panel 230 will not easily separate or loosen during use, thereby ensuring the structural stability of the entire panel assembly 200. This connection method has better shear and tensile resistance, and is less likely to experience relative displacement when subjected to certain external forces, such as being squeezed by the first clamping assembly 100 or being shaken during operation.

[0047] In some embodiments, the plurality of pressure sensors includes a first pressure sensor 260, a second pressure sensor 270, and a third pressure sensor 280, the first pressure sensor 260 is disposed on the first panel 210, the second pressure sensor 270 is disposed on the second panel 220, and the third pressure sensor 280 is disposed on the third panel 230. When the first clamping assembly 100 squeezes the battery cell 10, the first pressure sensor 260 can detect the pressure applied to the battery cell 10 at the location of the first panel 210. The second pressure sensor 270 can detect the pressure at the location of the second panel 220. The third pressure sensor 280 can detect the pressure at the location of the third panel 230. By comparing and analyzing these data, the stress state of the battery cell 10 in different areas can be evaluated, and the uniform stress of the battery cell 10 during clamping can be ensured by adjusting the first clamping assembly 100.

[0048] Through the first pressure sensor 260, the second pressure sensor 270 and the third pressure sensor 280, pressure monitoring at different positions can be achieved. The first pressure sensor 260, the second pressure sensor 270 and the third pressure sensor 280 at different positions can detect the pressure at different points, thereby obtaining more comprehensive pressure information. This multi-point monitoring can avoid the problem of incomplete data that may be caused by using only one pressure sensor, and can more accurately understand the distribution of the pressure on the battery cell 10 during clamping.

[0049] In some embodiments, the panel assembly 200 can be detachably arranged in the mounting groove 110. When the pressure sensor in the panel assembly 200 is damaged, the maintenance personnel can detach the panel assembly 200 from the mounting groove 110. In this way, the panel assembly 200 or the pressure sensor can be individually inspected, repaired or replaced, without the need to disassemble or replace the entire first clamping assembly 100, greatly reducing the cost and time cost of maintenance. For example, if the first pressure sensor 260 fails, the maintenance personnel can remove the panel assembly 200 from the mounting groove 110, and then repair or replace the first pressure sensor 260 without affecting other parts of the first clamping assembly 100.

[0050] In some embodiments, the second panel 220 is provided with a first clamping portion 222 at one end away from the first protrusion 221, and the inner side wall of the mounting groove 110 is formed with a first clamping groove 224 matched with the first clamping portion 222, and the first clamping portion 222 is clamped in the first clamping groove 224. The third panel 230 is provided with a second clamping portion 232 at one end away from the second protrusion 231, and the inner side wall of the mounting groove 110 is formed with a second clamping groove 233 matched with the second clamping portion 232, and the second clamping portion 232 is clamped in the second clamping groove 233.

[0051] Specifically, the first panel 210 is provided with a third clamping portion 213 and a fourth clamping portion 214, and the inner side wall of the mounting groove 110 is formed with a third clamping groove 215 and a fourth clamping groove 216, the third clamping portion 213 is clamped in the third clamping groove 215, and the fourth clamping portion 214 is clamped in the fourth clamping groove 216.

[0052] It should be noted that the scheme fixes the first panel 210, the second panel 220 and the third panel 230 from multiple dimensions by providing clamping grooves at different positions of the inner side wall of the mounting groove 110, thereby enhancing the stability of the first panel 210, the second panel 220 and the third panel 230 in the mounting groove 110. When the first driving member 300 drives the first clamping assembly 100 to perform the clamping operation of the battery cell 10, a large vibration may be generated, and such multi-dimensional clamping can ensure that the panel assembly 200 does not shift or loosen during the process of bearing these forces, thereby ensuring the reliability of the entire structure.

[0053] In some embodiments, the clamping device further comprises a mounting plate 600. The mounting plate 600 is connected to the bottom of the first clamping assembly 100, and the bottom of the first clamping assembly 100 is provided with an opening 610, which is in communication with the mounting groove 110, and the mounting plate 600 can seal the opening 610, so that the panel assembly 200 is stably mounted in the mounting groove 110.

[0054] In some embodiments, the first clamping assembly 100 comprises a first clamping plate 240 and a first clamping bracket 250, the first clamping plate 240 is connected to the first clamping bracket 250, the first clamping plate 240 clamps one side of the battery cell 10, and the mounting groove 110 is formed in the first clamping plate 240. The first clamping bracket 250 is connected to the first driving member 300, and the first driving member 300 drives the first clamping plate 240 to press the battery cell 10.

[0055] Specifically, in the vertical direction, the mounting groove 110 is arranged at the middle and the bottom of the first clamping assembly 100.

[0056] In some embodiments, the clamping device further comprises a controller 800. The controller 800 is electrically connected with the first driving member 300 and the pressure sensor respectively, and the controller 800 is used for receiving the pressure signal transmitted by the pressure sensor and controlling the driving pressure of the first driving member 300 on the battery cell 10 according to the pressure signal.

[0057] It should be noted that the first pressure sensor 260, the second pressure sensor 270 and the third pressure sensor 280 can monitor the pressure generated when the first driving member 300 acts on the battery cell 10 in real time, and convert the pressure signal into an electrical signal and transmit it to the controller 800. The controller 800 receives and analyzes and processes the pressure signal transmitted by the first pressure sensor 260, the second pressure sensor 270 and the third pressure sensor 280, and then sends a control instruction to the first driving member 300 according to a preset algorithm or logic to adjust the driving pressure of the first driving member 300 on the battery cell 10.

[0058] The controller 800 has a specific control strategy and algorithm preset inside. When the pressure signal detected by the first pressure sensor 260, the second pressure sensor 270 and the third pressure sensor 280 is lower than the set target pressure value, the controller 800 will send an instruction to make the first driving member 300 increase the driving pressure on the battery cell 10. When the pressure signal is higher than the target value, the controller 800 will instruct the first driving member 300 to reduce the pressure. Through continuous monitoring, feedback and adjustment, accurate control of the driving pressure of the battery cell 10 is realized, and it is ensured that the pressure on the battery cell 10 always remains within the desired range.

[0059] Specifically, the second clamping assembly 400 has the same structure as the first clamping assembly 100. The second clamping assembly 400 is provided with the mounting groove 110 and a plurality of pressure sensors. The controller 800 is electrically connected with the first driving member 300 and the pressure sensors in the second clamping assembly 400 respectively. The controller 800 can receive the pressure signal of the pressure sensor in the second clamping assembly 400, and control the driving pressure of the second driving member 500 on the battery cell 10 according to the pressure signal.

[0060] Specifically, the second clamping assembly 400 comprises a second clamping plate 410 and a second clamping bracket 420, the second clamping plate 410 is connected with the second clamping bracket 420, and the second clamping plate 410 clamps the other side of the battery cell 10. The top of the first clamping bracket 250 and the top of the second clamping bracket 420 are both connected with the air bag clamping bracket 700.

[0061] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A clamping device for clamping a battery cell, characterized in that The application relates to a battery clamping device. A first clamping assembly is arranged for clamping one side of the battery cell, and a mounting groove is arranged in the first clamping assembly for mounting a panel assembly, and the panel assembly is provided with a pressure sensor. A first driving member is connected with the first clamping assembly, and the first driving member is arranged for driving the first clamping assembly to press the battery cell, so that the pressure sensor can monitor the pressure of the first clamping assembly on the battery cell. A second clamping assembly is arranged opposite to the first clamping assembly, and the second clamping assembly is arranged for clamping the other side of the battery cell. A second driving member is connected with the second clamping assembly, and the second driving member is arranged for driving the second clamping assembly to press the battery cell. The panel assembly comprises a first panel, a second panel and a third panel, one end of the first panel is provided with a first recess, the other end of the first panel is provided with a second recess, one end of the second panel facing the first panel is provided with a first protrusion matched with the first recess, one end of the third panel facing the first panel is provided with a second protrusion matched with the second recess, the first protrusion is clamped in the first recess, and the second protrusion is clamped in the second recess.

2. The clamping device of claim 1, wherein The pressure sensor is provided with a plurality of pressure sensors, the plurality of pressure sensors comprise a first pressure sensor, a second pressure sensor and a third pressure sensor, the first pressure sensor is arranged on the first panel, the second pressure sensor is arranged on the second panel, and the third pressure sensor is arranged on the third panel.

3. The clamping device of claim 2, wherein One end of the second panel away from the first protrusion is provided with a first clamping part, and the inner side wall of the mounting groove is formed with a first clamping groove matched with the first clamping part, and the first clamping part is clamped in the first clamping groove; and / or 4. The clamping device of claim 2, wherein One end of the third panel away from the second protrusion is provided with a second clamping part, and the inner side wall of the mounting groove is formed with a second clamping groove matched with the second clamping part, and the second clamping part is clamped in the second clamping groove. The first panel is provided with a third clamping part and a fourth clamping part, the inner side wall of the mounting groove is formed with a third clamping groove and a fourth clamping groove, the third clamping part is clamped in the third clamping groove, and the fourth clamping part is clamped in the fourth clamping groove.

5. The clamping device of claim 2, wherein The panel assembly is detachably arranged in the mounting groove.

6. The clamping device of claim 1, wherein The clamping device further comprises a mounting plate connected with the bottom of the first clamping assembly, and the bottom of the first clamping assembly is provided with an opening communicated with the mounting groove, and the mounting plate can seal the opening.

7. The clamping device of claim 1, wherein The first clamping assembly comprises a first clamping plate and a first clamping support, the first clamping plate is connected with the first clamping support, the first clamping plate clamps one side of the battery cell, and the mounting groove is arranged in the first clamping plate.

8. The holding device according to claim 1, characterized in that The first clamping support is connected with the first driving member, and the first driving member drives the first clamping plate to press the battery cell. In the vertical direction, the mounting groove is arranged in the middle and the bottom of the first clamping assembly.

9. The holding device according to claim 1, characterized in that ​ 10. The clamping device of claim 1, wherein The clamping device further comprises a controller electrically connected with the first driving member and the pressure sensor respectively, the controller being used for receiving the pressure signal transmitted by the pressure sensor and controlling the driving pressure of the first driving member on the battery cell according to the pressure signal.

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