Battery cell expansive force testing device

Abstract

The utility model relates to a cell expansive force testing device, which comprises a bearing mechanism, a detection mechanism and a heat dissipation mechanism, the bearing mechanism comprises a detection tank and a plurality of bouncing assemblies, the detection tank is provided with first heat dissipation holes, and the bouncing assemblies are uniformly arranged along the inner wall surface of the detection tank; the detection mechanism comprises a plurality of pressure detection assemblies and a plurality of clamping assemblies, all the pressure detection assemblies are connected to all the bouncing assemblies in a one-to-one correspondence mode, all the clamping assemblies are connected to all the pressure detection assemblies in a one-to-one correspondence mode, and all the clamping assemblies jointly define a detection space in the detection tank; the heat dissipation mechanism comprises a heat dissipation shell and a heat dissipation fan, the heat dissipation shell is connected with the detection tank, the heat dissipation fan is arranged in the heat dissipation shell, and when the heat dissipation fan rotates, gas inside the detection tank and gas outside the detection tank are driven to be exchanged through the heat dissipation shell. Therefore, the electrical core expansibility testing device can detect the expansibility of the electrical core from a plurality of different angles at the same time, and the detection comprehensiveness is improved. In addition, the detection accuracy of the expansion force of the battery cell is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery, especially relate to the expansion force testing arrangement of electricity core. BACKGROUND

[0002] With the popularity of portable electronic devices, electric vehicles and energy storage systems, the demand for high-performance batteries is increasing. As the mainstream rechargeable battery type, the safety and reliability of lithium-ion batteries have received widespread attention. Among them, the expansion force of the battery cell is an important parameter, which is directly related to the safety performance and service life of the battery. Therefore, accurate detection of the expansion force of the battery cell is crucial to ensure the quality of the battery. The existing battery cell expansion force testing device has certain limitations when applied to cylindrical battery cells:

[0003] Firstly, due to the shape characteristics of cylindrical battery cells, it is difficult to detect them at multiple angles, and it is difficult to monitor them at multiple angles simultaneously. In addition, it is difficult to maintain the temperature of the battery cell constant during the detection process, especially in the case of environmental condition changes or long-term testing, the change of temperature will cause the change of internal pressure and volume of the battery cell, thereby increasing the error of the detection data, the detection error is large. SUMMARY

[0004] The utility model provides a kind of expansion force testing arrangement of electricity core, can solve the problem of unable to carry out multiple angle simultaneous detection and large detection error.

[0005] The utility model provides a kind of expansion force testing arrangement of electricity core, which comprises:

[0006] A bearing mechanism comprising a detection tank and a plurality of elastic components, the detection tank is provided with a first heat dissipation hole, and each elastic component is uniformly arranged along the inner wall surface of the detection tank;

[0007] A detection mechanism comprising a plurality of pressure detection components and a plurality of clamping components, each pressure detection component is connected to each elastic component one by one, each clamping component is connected to each pressure detection component one by one, and each clamping component encloses a detection space in the detection tank;And

[0008] A heat dissipation mechanism comprising a heat dissipation shell and a heat dissipation fan, the heat dissipation shell is connected to the detection tank, the heat dissipation fan is arranged in the heat dissipation shell, and the heat dissipation fan drives the gas inside and outside the detection tank to exchange through the heat dissipation shell when rotating;

[0009] Among them, the detection space is used for inserting the battery cell, so that each clamping component abuts against the circumferential sidewall of the battery cell from different directions, and each pressure detection component is clamped between the clamping component and the elastic component.

[0010] Preferably, the detection mechanism further comprises a plurality of connecting blocks, each of the connecting blocks is connected to one of the elastic recovery assemblies one by one, and each of the pressure detection assemblies is arranged on one of the connecting blocks one by one.

[0011] Each of the pressure detection assemblies comprises a plurality of pressure sensors, and each of the connecting blocks is symmetrically provided with the plurality of pressure sensors, and each of the pressure sensors is connected to the clamping assembly.

[0012] Preferably, each of the clamping assemblies comprises a surrounding plate, and each of the surrounding plates is connected to one of the pressure detection assemblies one by one.

[0013] Preferably, the bearing mechanism comprises a plurality of fixing blocks, each of the fixing blocks is uniformly distributed along the inner wall surface of the detection tank, each of the fixing blocks is connected to the inner wall surface of the detection tank, and each of the elastic recovery assemblies is arranged on one of the fixing blocks one by one; and / or

[0014] Each of the elastic recovery assemblies comprises a plurality of tension springs arranged symmetrically, and each of the tension springs is connected to the pressure detection assembly.

[0015] Preferably, a mounting groove is formed in the inner wall surface of the detection tank, and a second heat dissipation hole is formed in the groove bottom of the mounting groove.

[0016] Each of the heat dissipation mechanisms further comprises a heat dissipation plate, the heat dissipation shell is in a cylindrical shape and has a closed end and an open end, a plurality of third heat dissipation holes are formed in the closed end, a through hole is formed in the heat dissipation plate, the heat dissipation shell is arranged in the mounting groove, and the closed end is located in the mounting groove.

[0017] Preferably, the battery cell swelling force testing device further comprises a supporting mechanism and an observation mechanism, the detection tank is arranged on the supporting mechanism, and the observation mechanism is electrically connected to each of the pressure detection assemblies.

[0018] Preferably, the observation mechanism comprises a control console, a control circuit board and a display screen, the control console is arranged on the supporting mechanism, a containing groove is formed in the control console, the control circuit board is arranged in the containing groove, the display screen is arranged on the containing groove, and the control circuit board is electrically connected to the display screen and each of the pressure detection assemblies, respectively.

[0019] Preferably, the supporting mechanism comprises a bearing ring and a supporting column, each of the supporting columns is connected to the bearing ring, the bearing ring is sleeved outside the detection tank, and the control console is located on the outer peripheral side wall of the bearing ring.

[0020] Preferably, the battery cell swelling force testing device further comprises a rotating mechanism, the rotating mechanism comprises a base, a rotating motor and a plurality of bearing blocks, each bearing block is symmetrically arranged on the base, a position avoiding groove is formed on the base, the rotating motor is arranged in the position avoiding groove, and the detection tank is located on each bearing block, and the rotating motor is drivingly connected to the detection tank.

[0021] Preferably, the detection tank comprises a tank body, a cover body and a handle, the tank body is provided with an operation port, the heat dissipation mechanism and each elastic restoring assembly are arranged on the tank body, the cover body is arranged on the operation port and is screwed with the tank body, the handle is arranged on the cover body, and a plurality of first heat dissipation holes are formed on the cover body and symmetrically distributed on the cover body.

[0022] The battery cell swelling force testing device has the following beneficial effects:

[0023] The battery cell swelling force testing device has the following beneficial effects:

[0024] In addition, through the arrangement of the heat dissipation mechanism and the first heat dissipation holes, the battery cell swelling force testing device can be cooled in time during the testing process, the temperature change of the battery cell is avoided, the error of the detection data is effectively reduced, and the accuracy of the battery cell swelling force detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which similar reference characters refer to similar elements throughout and in which:

[0026] Figure 1 is a structural schematic view of the battery cell swelling force testing device in some embodiments of the present application;

[0027] Figure 2 is Figure 1 is an exploded view of the battery cell swelling force testing device shown in FIG. 1;

[0028] Figure 3 is Figure 1 is an exploded view of part of the structure of the battery cell swelling force testing device shown in FIG. 1;

[0029] Figure 4is the partial structure explosion drawing of the battery swelling force testing device in some embodiments of the utility model;

[0030] Figure 5 is the internal structure schematic view of the battery swelling force testing device when detecting the battery in some embodiments of the utility model;

[0031] Figure 6 is the structure schematic view of the supporting mechanism and the observation mechanism in some embodiments of the utility model.

[0032] Label explanation:

[0033] 10-battery swelling force testing device;20-battery;

[0034] 1-bearing mechanism;11-detection tank;111-tank body;1111-installation groove;1113-second heat dissipation hole;1112-operation port;112-cover body;1121-first heat dissipation hole;113-handle;12-recovery assembly;121-tension spring;13-fixed block;

[0035] 2-detection mechanism;21-pressure detection assembly;211-pressure sensor;22-clamping assembly;221-surrounding plate;23-detection space;24-connection block;

[0036] 3-heat dissipation mechanism;31-heat dissipation shell;311-closed end;313-third heat dissipation hole;312-open end;32-heat dissipation fan;33-heat dissipation plate;331-through hole;

[0037] 4-supporting mechanism;41-bearing ring;42-supporting column;

[0038] 5-observation mechanism;51-control console;511-receiving groove;52-control circuit board;53-display screen;

[0039] 6-rotary mechanism;61-base;611-avoidance slot;62-rotary motor;63-bearing block. DETAILED DESCRIPTION

[0040] The embodiments of the utility model will be described in more detail below with reference to the drawings. Although the embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms and should not be limited by the embodiments described here. On the contrary, these embodiments are provided to make the utility model more thorough and complete, and to convey the scope of the utility model to the skilled in the art completely.

[0041] It should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] Unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, they can be fixed connection, or detachable connection or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Figure 1 The present application shows the battery cell expansion force testing device 10 in some embodiments of the present application, which is used for expansion force testing of the battery cell 20.

[0045] As Figures 1 to 5 shown, the battery cell expansion force testing device 10 includes a bearing mechanism 1, a detection mechanism 2 and a heat dissipation mechanism 3. The bearing mechanism 1 is used to provide mounting position for the remaining mechanism, and also used for inserting the battery cell 20 (see Figure 6 ) which needs to be detected. The detection mechanism 2 is arranged in the bearing mechanism 1, and the detection mechanism 2 is used to resist the battery cell 20 inserted into the bearing mechanism 1, so as to detect the expansion force of the battery cell 20. The heat dissipation mechanism 3 is arranged on the bearing mechanism 1, and the heat dissipation mechanism 3 is used to dissipate heat for the battery cell 20 inserted into the bearing mechanism 1, so as to keep the temperature of the battery cell 20 as constant as possible.

[0046] AsFigures 2 to 4 As shown, the bearing mechanism 1 includes a detection tank 11 and a plurality of resilient components 12, the detection tank 11 is provided with a first heat dissipation hole 1121, and each resilient component 12 is uniformly arranged along the inner wall surface of the detection tank 11.

[0047] As shown, Figures 2 to 4 The detection mechanism 2 includes a plurality of pressure detection components 21 and a plurality of clamping components 22, each pressure detection component 21 is connected to each resilient component 12 one by one, and each clamping component 22 is connected to each pressure detection component 21 one by one, and each clamping component 22 collectively encloses a detection space 23 in the detection tank 11.

[0048] As shown, Figure 4 The heat dissipation mechanism 3 includes a heat dissipation shell 31 and a heat dissipation fan 32, the heat dissipation shell 31 is connected to the detection tank 11, and the heat dissipation fan 32 is arranged in the heat dissipation shell 31. When the heat dissipation fan 32 rotates, it drives the gas inside and outside the detection tank 11 to exchange through the heat dissipation shell 31.

[0049] As shown, Figures 2 to 5 The detection space 23 is used for inserting the battery cell, so that each clamping component 22 abuts against the circumferential side wall of the battery cell from different directions, and each pressure detection component 21 is clamped between the clamping component 22 and the resilient component 12.

[0050] It can be understood that the bearing mechanism 1 includes a non-sealed detection tank 11 and a plurality of resilient components 12. The detection tank 11 is provided with an opening or a notch to allow the battery cell to be conveniently inserted into the detection space 23, and is provided with a first heat dissipation hole 1121 for heat dissipation. Each resilient component 12 is uniformly distributed along the inner wall surface of the detection tank 11, which ensures that uniform pressure can be applied to the battery cell from all directions. In this way, not only is the installation and removal of the battery cell facilitated, but also good air circulation is ensured, which is helpful for heat dissipation.

[0051] Each pressure detection component 21 is connected to one resilient component 12, and each clamping component 22 is connected to one pressure detection component 21. When the battery cell 20 is inserted into the detection space 23 enclosed by the clamping components 22, the clamping components 22 abut against the circumferential side wall of the battery cell from different directions, so that the pressure detection component 21 is located between the clamping component 22 and the resilient component 12, thereby being able to measure the pressure change of the battery cell when it expands in all directions.

[0052] The heat dissipation shell 31 is connected to the detection tank 11, and the heat dissipation fan 32 promotes air exchange between the inside of the detection tank 11 and the outside environment when it is started, and heat conduction is achieved through the first heat dissipation hole 1121, which prevents the battery cell 20 from overheating or temperature fluctuation affecting the test results. The first heat dissipation hole 1121 on the detection tank 11 further ensures that the temperature of the battery cell tends to be constant, ensuring that the battery cell 20 remains in a stable temperature range throughout the test process.

[0053] It should be noted that in actual application, the battery to be tested is first placed into the detection space 23 through the opening or slot on the detection tank 11, and then the heat dissipation fan 32 is activated to maintain appropriate temperature conditions. The battery is fixed by the clamping assembly 22 and the expansion force test is started, at which time the pressure detection assembly 21 records the expansion force values from different directions of the battery. The whole process ensures multi-angle and comprehensive expansion force detection, while ensuring the accuracy of the data.

[0054] As shown in Figure 3 and Figure 4 , in some embodiments of the battery expansion force testing device 10, the detection mechanism 2 further comprises a plurality of connecting blocks 24, each of which is connected to each of the elastic restoring assemblies 12, and each of the pressure detection assemblies 21 is arranged on each of the connecting blocks 24.

[0055] Each of the pressure detection assemblies 21 comprises a plurality of pressure sensors 211, and each of the connecting blocks 24 is symmetrically provided with a plurality of pressure sensors 211, and each of the pressure sensors 211 is connected to the clamping assembly 22.

[0056] It can be understood that the arrangement of the connecting blocks 24 not only enhances the stability of the structure, but also provides a more stable support platform for the pressure detection assembly 21. By arranging the pressure detection assembly 21 on the connecting block 24, it can be ensured that even in the case of slight displacement of the battery 20, the pressure detection can maintain high sensitivity and accuracy. Each of the pressure detection assemblies 21 is configured with a plurality of pressure sensors 211, which are symmetrically distributed on each of the connecting blocks 24. In this way, the data of the battery expansion force can be synchronously collected from multiple points, so as to obtain more comprehensive pressure distribution data or pressure distribution images. Each of the pressure sensors 211 is directly connected to the clamping assembly 22, so as to monitor the expansion force of the battery peripheral sidewall in different directions in real time.

[0057] It should be noted that the connecting block 24 provides a stable base for the pressure detection assembly 21, reducing the measurement error caused by external vibration or movement of the battery itself. Through the symmetrically arranged pressure sensors 211, the pressure values from different regions of the battery can be obtained at the same time point, and more accurate expansion force data can be obtained. The multi-point pressure sensing of this embodiment makes the test results no longer limited to single-point measurement, but can reflect the pressure distribution of the entire battery surface, improving the integrity and reliability of the test data.

[0058] As shown in Figure 3 and Figure 4 , in some embodiments of the battery expansion force testing device 10, each of the clamping assemblies 22 comprises a surrounding plate 221, and each of the surrounding plates 221 is connected to each of the pressure detection assemblies 21.

[0059] Understandably, the surrounding plate 221 in each clamping assembly 22 provides uniform and stable support. The surrounding plate 221 not only enhances the clamping effect on the battery cell but also ensures that the pressure detection assembly 21 accurately senses the pressure changes generated during battery cell expansion during testing. Furthermore, the shape and size of the surrounding plate 221 can be adjusted according to different battery cell models to meet the testing needs of various battery cell specifications.

[0060] It should be noted that the enclosure plate 221 increases the contact area with the cell surface, making the clamping more stable and reducing the risk of cell slippage or displacement during testing. Because the enclosure plate 221 can be evenly distributed around the cell, it ensures that pressure from all directions is accurately transmitted to the pressure detection component 21, thereby improving the accuracy of expansion force measurement.

[0061] like Figures 2 to 4 As shown, in some implementations of the cell expansion force testing device 10, the supporting mechanism 1 includes several fixed blocks 13, each fixed block 13 is evenly distributed along the inner wall of the test tank 11, each fixed block 13 is connected to the inner wall of the test tank 11, and each spring-loaded component 12 is correspondingly arranged on each fixed block 13.

[0062] Understandably, the fixing blocks 13 can stably support the spring-loaded components 12. By evenly distributing the fixing blocks 13 on the inner wall of the testing tank 11, it can be ensured that each spring-loaded component 12 is in a corresponding and appropriate position, so as to achieve uniform pressure applied to the cell from different directions. The connection between the fixing blocks 13 and the inner wall of the testing tank 11 can be achieved by threaded connection, bonding or welding, etc. Of course, the testing tank 11 and each fixing block 13 can also be integrally molded to ensure the integrity and reliability of the structure.

[0063] It should be noted that the fixing block 13 provides solid support for the spring-loaded assembly 12, reducing measurement errors caused by external vibration or cell movement, and ensuring the accuracy of pressure detection. The uniform distribution of the fixing blocks 13 allows the spring-loaded assembly 12 to be accurately installed in the preset position, thereby achieving uniform pressure distribution in all directions and improving the consistency and repeatability of test results.

[0064] like Figure 4 As shown, in some embodiments of the cell expansion force testing device 10, each spring assembly 12 includes several tension springs 121 arranged symmetrically, and each tension spring 121 is connected to the pressure detection assembly 21.

[0065] Understandably, the symmetrical arrangement of the tension springs 121 within each spring-loaded assembly 12 enables uniform pressure transmission and a balanced restoring force. The arrangement of the tension springs 121 allows them to provide a constant reaction force when the battery cell expands, ensuring that the pressure detection assembly 21 can accurately sense changes on the battery cell surface. Furthermore, the elastic properties of the tension springs 121 allow them to maintain appropriate preload under different degrees of expansion, ensuring force stability during testing.

[0066] It should be noted that the symmetrically arranged tension springs 121 ensure that the force is evenly distributed in all directions, avoiding measurement errors caused by uneven force on one side and improving the accuracy of the expansion force test.

[0067] like Figure 4 As shown, in some embodiments of the cell expansion force testing device 10, an installation groove 1111 is provided on the inner wall surface of the test tank 11, and a second heat dissipation hole 1113 is provided at the bottom of the installation groove 1111.

[0068] Each heat dissipation mechanism 3 also includes a heat dissipation plate 33, the heat dissipation shell 31 is cylindrical and has a closed end 311 and an open end 312, the closed end 311 is provided with a plurality of third heat dissipation holes 313, the heat dissipation plate 33 is provided with a through hole 331, the heat dissipation shell 31 is disposed in the mounting groove 1111, and the closed end 311 is located in the mounting groove 1111.

[0069] Understandably, the mounting slot 1111 is used to accommodate the heat dissipation mechanism 3. The mounting slot 1111 not only provides a stable mounting position for the heat dissipation component, but also enhances heat conduction efficiency through the second heat dissipation hole 1113 at its bottom, allowing heat to be rapidly transferred away from the inside of the test tank 11. The second heat dissipation hole 1113 promotes heat exchange between the air inside the test tank 11 and the external environment, thereby effectively reducing the potential heat accumulation problem of the battery cell during testing.

[0070] The through-hole 331 and the second heat dissipation hole 1113 on the heat sink 33 work together to further improve the heat dissipation effect. The design of the heat sink 33 not only accelerates heat dissipation but also provides structural support for the detection tank 11. The cooling fan 32 is located inside the heat sink shell 31. The rotation of the cooling fan 32 forces outside air into the detection tank 11 through the third heat dissipation hole 313 and the through-hole 331 on the heat sink 33, or the rotation of the cooling fan 32 can cause the gas inside the detection tank 11 to quickly enter the heat sink shell 31 and then be further discharged to the outside.

[0071] like Figure 1 and Figure 2As shown, in some embodiments of the cell expansion force testing device 10, the cell expansion force testing device 10 also includes a support mechanism 4 and an observation mechanism 5. The test tank 11 is disposed on the support mechanism 4, and the observation mechanism 5 is electrically connected to each pressure detection component 21.

[0072] Understandably, the support mechanism 4 provides a stable mounting platform for the test tank 11. The support mechanism 4 ensures that the test tank 11 remains level and stable during testing, avoiding measurement errors caused by external vibrations or uneven surfaces.

[0073] Observation unit 5 is used to monitor and record changes in cell expansion force in real time. The design of observation unit 5 allows users to intuitively view the test progress. Observation unit 5 can also be integrated with data analysis software to help users perform more in-depth data processing and result interpretation.

[0074] Furthermore, in some other embodiments of the cell expansion force testing device 10, the support mechanism 4 may also be equipped with an adjustment device to accommodate the different heights and angles of the test tank 11, thereby adapting to various laboratory environments.

[0075] like Figure 6 As shown, in some implementations of the cell expansion force testing device 10, the observation mechanism 5 includes a control console 51, a control circuit board 52, and a display screen 53. The control console 51 is mounted on the support mechanism 4, and a receiving groove 511 is provided on the control console 51. The control circuit board 52 is located in the receiving groove 511, and the display screen 53 is covered by the receiving groove 511. The control circuit board 52 is electrically connected to the display screen 53 and each pressure detection component 21.

[0076] Understandably, the configuration of the control console 51 allows users to easily access and operate the corresponding function buttons and interfaces. The receiving slot 511 is used to accommodate the control circuit board 52 and other related electronic components; accommodating the remaining components in the receiving slot 511 not only saves space but also protects the internal components from external environmental influences. The control circuit board 52 can be configured to be electrically connected to the display screen 53 and each pressure detection component 21 via wires or signal lines. The control circuit board 52 is used to receive real-time data from the pressure detection components 21 and convert it into readable information before sending it to the display screen 53. The control circuit board 52 is prior art; it can be further configured to integrate functions such as a data processing unit, memory, and communication module, enabling it to perform complex calculation tasks, record historical data, and support remote monitoring and data analysis. The display screen 53 forms the front panel of the control console 51. The display screen 53 not only provides an intuitive interface for users to view test progress and results but also enables interactive operations, such as parameter settings, through touchscreen technology. It should be noted that the content of this embodiment can improve operational convenience and enhance the user-friendliness of the product.

[0077] like Figure 6 As shown, in some implementations of the cell expansion force testing device 10, the support mechanism 4 includes a bearing ring 41 and support columns 42. Each support column 42 is connected to the bearing ring 41. The bearing ring 41 is sleeved outside the test tank 11, and the control console 51 is located on the outer wall of the outer periphery of the bearing ring 41.

[0078] Understandably, the bearing ring 41 is ring-shaped, and the bearing ring 41 and the detection tank 11 can be connected by welding, bonding, snap-fitting, threaded connection, or other fasteners such as threaded parts. The support column 42 serves to support the bearing ring 41.

[0079] like Figure 1 and Figure 2 As shown, in some embodiments of the cell expansion force testing device 10, the cell expansion force testing device 10 also includes a rotating mechanism 6. For example... Figure 3 As shown, the rotating mechanism 6 includes a base 61, a rotating motor 62, and several bearing blocks 63. Each bearing block 63 is symmetrically arranged on the base 61. A clearance groove 611 is provided on the base 61. The rotating motor 62 is located in the clearance groove 611. The detection tank 11 is located on each bearing block 63. The rotating motor 62 is driven and connected to the detection tank 11.

[0080] Understandably, the base 61 not only provides a mounting platform for other components but also accommodates the rotary motor 62 via a recessed groove 611. The base 61 is used to support the weight of the entire rotating mechanism 6 and its superstructure (such as the detection tank 11). The shape and size of the recessed groove 611 can be flexibly set, preferably configured to fit the external structure of the rotary motor 62, thereby ensuring that the rotary motor 62 can be securely installed without affecting the overall structural strength of the base 61.

[0081] It should be noted that in actual operation, a robotic arm can be used to pull out the battery cell 20 after it has been tested once, maintaining the angle of the battery cell 20 during this process. Subsequently, the detection tank 11 is rotated by a rotary motor 62 to a certain angle, and the battery cell 20 is reinserted into the detection space 23 to perform the battery cell expansion force test again. In this way, more than two battery cell expansion force tests can be quickly performed, further reducing detection errors and improving the efficiency of multiple tests.

[0082] like Figures 2 to 4As shown, in some embodiments of the battery cell swelling force testing device 10, the detection tank 11 includes a tank body 111, a cover body 112 and a handle 113, the tank body 111 has an operation port 1112, the heat dissipation mechanism 3 and each elastic recovery assembly 12 are arranged on the tank body 111, the cover body 112 is arranged on the operation port 1112, and the cover body 112 is screwed with the tank body 111, and the handle 113 is arranged on the cover body 112. A plurality of first heat dissipation holes 1121 are formed in the cover body 112, and each first heat dissipation hole 1121 is symmetrically distributed on the cover body 112.

[0083] Understandably, the tank body 111 is provided with an operation port 1112, which is used for conveniently inserting or removing the battery cell 20 under test. The operation port 1112 is located at one end of the tank body 111, and its size and shape are optimized to accommodate battery cells of different specifications while ensuring sufficient operating space for users to quickly install and remove the battery cells. The cover body 112 is tightly arranged on the operation port 1112 through threaded connection, which not only provides reliable sealing effect to prevent external dust and impurities from entering the tank body 111, but also ensures the stability of the internal environment and reduces the influence of external factors on the test results. The symmetrically distributed first heat dissipation holes 1121 ensure the uniformity of heat dissipation and improve the heat dissipation efficiency. The handle 113 provides a convenient position for users to grasp and open and close the cover body 112.

[0084] The implementation of the present application has the following beneficial effects:

[0085] The present application relates to a kind of battery cell swelling force testing device, one, each clamping assembly on the battery cell swelling force testing device is configured to be enclosed from different directions on the periphery side wall of battery cell, and each clamping assembly is provided with a pressure detection assembly, so that detection mechanism can simultaneously test the swelling force of each enclosure of the periphery side wall of battery cell, realizes that battery cell swelling force testing device simultaneously from multiple different angles on battery cell is carried out swelling force detection, improves detection comprehensiveness.

[0086] In addition, by the arrangement of heat dissipation mechanism and first heat dissipation hole, the battery cell swelling force testing device can be cooled in time during testing process, avoid that battery cell temperature changes too much, effectively reduce detection data error, improve battery cell swelling force detection accuracy.

[0087] The scheme of the present application has been described in detail above with reference to the drawings. In the above-described embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be seen in the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the description are not necessarily required by the present application. In addition, it can be understood that the steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device of the embodiments of the present application can be combined, divided and reduced according to actual needs.

[0088] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. An electrochemical cell swelling force testing apparatus, comprising: The application relates to a battery detection device. The battery detection device comprises a bearing mechanism (1), a detection mechanism (2) and a heat dissipation mechanism (3). The bearing mechanism (1) comprises a detection tank (11) and a plurality of elastic recovery assemblies (12), the detection tank (11) is provided with a first heat dissipation hole (1121), and the elastic recovery assemblies (12) are uniformly arranged on the inner wall surface of the detection tank (11). The detection mechanism (2) comprises a plurality of pressure detection assemblies (21) and a plurality of clamping assemblies (22), the pressure detection assemblies (21) are one-to-one connected to the elastic recovery assemblies (12), the clamping assemblies (22) are one-to-one connected to the pressure detection assemblies (21), and the clamping assemblies (22) jointly enclose a detection space (23) in the detection tank (11).

2. The cell bulge test apparatus of claim 1, wherein, The heat dissipation mechanism (3) comprises a heat dissipation shell (31) and a heat dissipation fan (32), the heat dissipation shell (31) is connected to the detection tank (11), the heat dissipation fan (32) is arranged in the heat dissipation shell (31), and the heat dissipation fan (32) drives the gas inside and outside the detection tank (11) to exchange through the heat dissipation shell (31) when rotating. The detection space (23) is used for inserting a battery, so that the clamping assemblies (22) abut on the circumferential side wall of the battery from different directions, and the pressure detection assemblies (21) are clamped between the clamping assemblies (22) and the elastic recovery assemblies (12).

3. The cell bulge test apparatus of claim 1 or 2, wherein, The detection mechanism (2) further comprises a plurality of connecting blocks (24), the connecting blocks (24) are one-to-one connected to the elastic recovery assemblies (12), and the pressure detection assemblies (21) are one-to-one arranged on the connecting blocks (24).

4. The cell bulge test apparatus of claim 1 or 2, wherein, Each pressure detection assembly (21) comprises a plurality of pressure sensors (211), the pressure sensors (211) are symmetrically arranged on each connecting block (24), and each pressure sensor (211) is connected to the clamping assembly (22). Each clamping assembly (22) comprises a surrounding plate (221), and the surrounding plates (221) are one-to-one connected to the pressure detection assemblies (21).

5. The cell bulge test apparatus of claim 1, wherein, The bearing mechanism (1) comprises a plurality of fixing blocks (13), the fixing blocks (13) are uniformly distributed on the inner wall surface of the detection tank (11), the fixing blocks (13) are connected to the inner wall surface of the detection tank (11), and the elastic recovery assemblies (12) are one-to-one arranged on the fixing blocks (13); and / or Each elastic recovery assembly (12) comprises a plurality of tensile springs (121) which are symmetrically arranged, and each tensile spring (121) is connected to the pressure detection assembly (21). An installation groove (1111) is formed in the inner wall surface of the detection tank (11), and a second heat dissipation hole (1113) is formed in the groove bottom of the installation groove (1111). Each of the heat dissipation mechanisms (3) further comprises a heat dissipation plate (33), the heat dissipation shell (31) is cylindrical and has a closed end (311) and an open end (312), the closed end (311) is provided with a plurality of third heat dissipation holes (313), the heat dissipation plate (33) is provided with a through hole (331), and the heat dissipation shell (31) is arranged in the mounting groove (1111), and the closed end (311) is located in the mounting groove (1111).

6. The cell bulge test apparatus of claim 1, wherein, The battery cell expansion force testing device further comprises a supporting mechanism (4) and an observation mechanism (5), the detection tank (11) is arranged on the supporting mechanism (4), and the observation mechanism (5) is electrically connected to each of the pressure detection assemblies (21).

7. The cell bulge force testing apparatus of claim 6, wherein, The observation mechanism (5) comprises a control console (51), a control circuit board (52) and a display screen (53), the control console (51) is arranged on the supporting mechanism (4), the control console (51) is provided with a receiving groove (511), the control circuit board (52) is arranged in the receiving groove (511), and the display screen (53) is arranged on the receiving groove (511).

8. The cell bulge force testing apparatus of claim 7, wherein, The supporting mechanism (4) comprises a bearing ring (41) and a supporting column (42), each of the supporting columns (42) is connected to the bearing ring (41), the bearing ring (41) is arranged outside the detection tank (11), and the control console (51) is located on the outer peripheral wall of the bearing ring (41).

9. The cell bulge test apparatus of claim 1 or 6, wherein, The battery cell expansion force testing device further comprises a rotating mechanism (6), the rotating mechanism (6) comprises a base (61), a rotating motor (62) and a plurality of bearing blocks (63), each of the bearing blocks (63) is symmetrically arranged on the base (61), the base (61) is provided with an avoiding groove (611), the rotating motor (62) is arranged in the avoiding groove (611), the detection tank (11) is located on each of the bearing blocks (63), and the rotating motor (62) is drivingly connected to the detection tank (11).

10. The cell bulge test apparatus of claim 1, wherein, The detection tank (11) comprises a tank body (111), a cover body (112) and a handle (113), the tank body (111) has an operation opening (1112), the heat dissipation mechanism (3) and each of the elastic restoring assemblies (12) are arranged on the tank body (111), the cover body (112) is arranged on the operation opening (1112) and is screwed with the tank body (111), the handle (113) is arranged on the cover body (112), and a plurality of the first heat dissipation holes (1121) are arranged on the cover body (112).

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