Battery cell test support and battery cell test equipment

Abstract

The invention provides a battery cell test support and battery cell test equipment. The battery cell test support comprises a base assembly, a first adaptive sleeve and a second adaptive sleeve, the base assembly comprises a first base and a second base, the first base is provided with a first accommodating groove, the second base is provided with a second accommodating groove, and the first accommodating groove and the second accommodating groove are correspondingly arranged; the first base is provided with a first adjusting column in a protruding mode, the second base is provided with a second adjusting column in a protruding mode, the second adjusting column is sleeved with the first adjusting column, and the connecting position of the first adjusting column and the second adjusting column is adjustable so that the distance between the first base and the second base can be adjusted. The first adaptive sleeve is located in the first accommodating groove and is detachably connected with the first base, and the first adaptive sleeve is used for sleeving one end of a to-be-tested cell; and the second adaptive sleeve is located in the second accommodating groove and is detachably connected with the second base, and the second adaptive sleeve is used for sleeving the other end of the to-be-tested battery cell.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and in particular to a cell testing bracket and cell testing equipment. Background Technology

[0002] As the core energy storage unit in electric vehicles and renewable energy systems, battery modules are mainly composed of multiple battery cells. The performance and reliability of these cells need to be evaluated during the research and development and manufacturing of battery modules.

[0003] Currently, the fixed test stands used in battery cell testing are only designed for battery modules composed of specific cell models. However, battery cells have diverse specifications, including different diameters and heights. Testing different cell specifications requires frequent changes to the test stands, resulting in poor compatibility and incurring significant manpower and material costs in the testing process. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a cell testing bracket and cell testing equipment with better compatibility.

[0005] The purpose of this disclosure is achieved through the following technical solution: A battery cell testing bracket, comprising: A base assembly, comprising a first base and a second base, wherein the first base has a first receiving groove and the second base has a second receiving groove, and the first receiving groove and the second receiving groove are correspondingly arranged; A height adjustment component is disposed between the first base and the second base for adjusting the distance between the first base and the second base; The first adapter sleeve is located in the first receiving groove and is detachably connected to the first base. The first adapter sleeve is provided with a first cell positioning cavity for preventing the cell from moving radially. The second adapter sleeve is located in the second receiving groove and is detachably connected to the second base 120. The second adapter sleeve is provided with a second cell positioning cavity for preventing the cell from moving radially.

[0006] In one embodiment, the height adjustment assembly includes a first adjustment column and a second adjustment column. The first adjustment column protrudes from the side of the first base facing the second base, and the second adjustment column protrudes from the side of the second base facing the first base. The first adjustment column and the second adjustment column are telescopically connected to each other, and the two can adjust the distance between the first base and the second base by moving relative to each other.

[0007] In one embodiment, the height adjustment assembly further includes a snap-fit ​​element, wherein one or both of the first adjustment post and the second adjustment post are provided with a plurality of snap-fit ​​holes arranged at intervals along the axial direction, and the snap-fit ​​element can selectively snap into one of the snap-fit ​​holes to complete the positioning.

[0008] In one embodiment, the snap-fit ​​member includes an elastic portion and a snap-fit ​​portion. The snap-fit ​​member is disposed on one of the first adjusting post and the second adjusting post, and the snap-fit ​​hole is disposed on the other of the first adjusting post and the second adjusting post. The elastic portion can drive the snap-fit ​​portion to move elastically so as to engage in the snap-fit ​​hole.

[0009] In one embodiment, the first adjusting column has a cavity and a telescopic hole, one end of the elastic part is located in the cavity and is fixedly connected to the first adjusting column, and the other end of the elastic part is connected to the snap-fit ​​part, which is located in the telescopic hole and is slidably connected to the first adjusting column.

[0010] In one embodiment, the inner peripheral wall of the first cell positioning cavity is provided with a plurality of first limiting flanges at circumferential intervals, and the inner peripheral wall of the second cell positioning cavity is provided with a plurality of second limiting flanges at circumferential intervals. The first limiting flanges and the second limiting flanges abut against the cell to be tested to restrict the radial movement of the cell to be tested.

[0011] In one embodiment, a first positioning flange is provided between the outer peripheral side of the first adapter sleeve and the first receiving groove, and a second positioning flange is provided between the outer peripheral side of the second adapter sleeve and the second receiving groove.

[0012] In one embodiment, the outer peripheral wall of the first adapter sleeve is provided with a plurality of first positioning flanges at intervals along the circumferential direction, and the inner peripheral wall of the first receiving groove is provided with a plurality of first guide grooves at intervals along the circumferential direction, with the plurality of first positioning flanges corresponding to each other in the plurality of first guide grooves; the outer peripheral wall of the second adapter sleeve is provided with a plurality of second positioning flanges at intervals along the circumferential direction, and the inner peripheral wall of the second receiving groove is provided with a plurality of second guide grooves at intervals along the circumferential direction, with the plurality of second positioning flanges corresponding to each other in the plurality of second guide grooves.

[0013] In one embodiment, the cell testing bracket further includes multiple power connection components, each of which includes a power connection contact and a power connection terminal. The power connection contact is disposed in a corresponding first receiving groove, and the power connection terminal is disposed in a corresponding second receiving groove.

[0014] A battery cell testing device includes a battery cell testing bracket according to any of the above embodiments.

[0015] Compared with the prior art, this disclosure has at least the following advantages: 1) The above-mentioned cell test bracket adopts a height adjustment component, which makes the distance between the first base and the second base adjustable, thereby assembling cell testers of different heights, and thus the cell test bracket can test cell testers of different heights.

[0016] 2) At the same time, the battery cell under test is radially limited by the first battery cell positioning cavity and the second battery cell positioning cavity to prevent the battery cell under test from moving during the test and to avoid errors in the results of the battery cell under test.

[0017] 3) Furthermore, the first base and the first adapter sleeve are detachable, as are the second base and the second adapter sleeve. This allows for the replacement of the first and second adapter sleeves with those matching the outer diameter of the battery cell under test, based on different diameters, to better secure the battery cell to the first and second bases. Therefore, the aforementioned battery cell testing bracket can test battery cells of different heights and diameters without requiring the replacement of a specific battery cell testing bracket, reducing material costs and manpower consumption, thereby improving the compatibility of the battery cell testing bracket. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure 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.

[0019] Figure 1 This is a schematic diagram of the structure of a battery cell testing bracket according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the exploded structure of the battery cell test bracket; Figure 3 This is a schematic diagram of the first base structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the second base structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the first adaptable sleeve structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the second adaptable sleeve structure according to an embodiment of the present invention; Figure 7 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 8 for Figure 4 A cross-sectional view of the second base section in the diagram; Figure 9 for Figure 8Enlarged view of the structure at point B in the image; Figure 10 for Figure 1 A partial cross-sectional schematic diagram of the battery cell testing bracket in the diagram; Reference numerals: Cell test bracket 10; Base assembly 100; First base 110; first receiving groove 111; first guide groove 1111; Second base 120; second receiving groove 121; second guide groove 1211; Height adjustment component 200; First adjustment post 210; Cavity 211; Snap-fit ​​hole 212; Telescopic hole 213; Second adjustment post 220; Snap-fit ​​part 230; Elastic part 231; Snap-fit ​​part 232 First adapter sleeve 300; first battery cell positioning cavity 310; first limiting flange 320; first positioning groove 330; first positioning flange 340; Second adapter sleeve 400; second battery cell positioning cavity 410; second limiting flange 420; second positioning groove 430; second positioning flange 440; Power connection component 400; power connection contact 410; power connection terminal 420; mounting end 421; power connection end 422. Detailed Implementation

[0020] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1-6 The present invention provides a battery cell test bracket 10, including a base assembly 100, a height adjustment assembly 200, a first adapter sleeve 300 and a second adapter sleeve 400. The base assembly 100 includes a first base 110 and a second base 120. The first base 110 has a first receiving groove 111, and the second base 120 has a second receiving groove 121. The first receiving groove 111 and the second receiving groove 121 are correspondingly arranged. The height adjustment assembly 200 is disposed between the first base 110 and the second base 120 and is used to adjust the distance between the first base 110 and the second base 120. The first adapter sleeve 300 is located in the first receiving groove 111 and is detachably connected to the first base 110. The first adapter sleeve 300 is provided with a first cell positioning cavity 310 for preventing the cell from moving radially. The second adapter sleeve 400 is located in the second receiving groove 121 and is detachably connected to the second base 120. The second adapter sleeve 400 is provided with a second cell positioning cavity 410 for preventing the cell from moving radially. Therefore, by replacing the first adapter sleeve 300 and the second adapter sleeve 400 with those matching the outer diameter of the battery cell under test (BUT) according to different diameters, the BUT can be better fixed on the first base 110 and the second base 120. This allows the battery cell test bracket 10 to test BUT cells of different heights and diameters without the need to replace a specific battery cell test bracket 10, reducing material costs and manpower consumption, and thus improving the test compatibility of the battery cell test bracket 10. In this embodiment, the first base 110 and the second base 120 can be made of metal, such as copper alloy or aluminum alloy. In this way, the heat generated by the BUT during testing can be transferred to the first base 110 and the second base 120 through the height adjustment component 200, thereby dissipating heat from the BUT and preventing overheating damage. Furthermore, the battery cell test bracket 10 can form an electromagnetic shielding cavity, improving the electromagnetic compatibility performance of the battery cell test bracket 10.

[0024] During assembly, the aforementioned cell testing bracket 10 involves placing the first adapter sleeves 300 one-to-one into the first receiving groove 111 and the second adapter sleeves 400 one-to-one into the second receiving groove 121. Then, one end of a cell to be tested is fitted and connected to either the first adapter sleeve 200 or the second adapter sleeve 300, thereby fixing one end of the cell to be tested. After fixing one end of the cell to be tested, the distance between the first base 110 and the second base 120 is adjusted using the height adjustment component 200 according to the height of the cell to be tested, adapting to the required height of the cell to be tested, so that the other end of the cell to be tested can fall into another first adapter sleeve 300 or a second adapter sleeve 400. In this way, the cell to be tested can be fixed on the cell testing bracket 10.

[0025] Meanwhile, the first cell positioning cavity 310 and the second cell positioning cavity 410 are used to radially limit the cell under test, preventing the cell under test from moving during the test and avoiding errors in the results of the cell under test.

[0026] Furthermore, the first base 110 and the first adapter sleeve 300 are detachable, as are the second base 120 and the second adapter sleeve 400. This allows for the replacement of the first adapter sleeve 300 and the second adapter sleeve 400 with those matching the outer diameter of the battery cell under test, based on different diameters, to better secure the battery cell to the first base 110 and the second base 120. Therefore, the aforementioned battery cell testing bracket 10 can test battery cells of different heights and diameters without requiring replacement with a specific battery cell testing bracket 10, reducing material costs and manpower consumption, thereby improving the compatibility of the battery cell testing bracket 10.

[0027] See Figure 2 In one embodiment, the height adjustment assembly 200 includes a first adjustment post 210 and a second adjustment post 220. The first adjustment post 210 protrudes from the side of the first base 110 facing the second base 120, and the second adjustment post 220 protrudes from the side of the second base 120 facing the first base 110. The first adjustment post 210 and the second adjustment post 220 are telescopically connected to each other, and the two can adjust the distance between the first base 110 and the second base 120 by relative movement.

[0028] It should be noted that the first adjustment column 210 and the second adjustment column 220 are telescopically connected to each other, so that the first adjustment column 210 or the second adjustment column 220 can move relative to each other in the same direction to complete the height adjustment, thereby reducing the space occupied by the height adjustment component 200. After the first base 110 and the second base 120 are assembled, the space utilization rate within the base component 100 is improved, which facilitates the assembly of the battery cell under test.

[0029] In one embodiment, each first adjusting post 210 is detachably connected to the first base 110, and each second adjusting post 220 is detachably connected to the second base 120. Thus, the number of first adjusting posts 210 and second adjusting posts 220 can be adjusted by disassembling or installing them according to the number of cells to be tested between the first base 110 and the second base 120, enhancing the adaptability of the first base 110 and the second base 120. It should be noted that when assembling the first base 110 and the second base 120, different lengths of the first adjusting posts 210 and second adjusting posts 220 can be selected according to the height of the cells to be tested, to better fit the cells and further enhance the compatibility and adaptability of the cell testing bracket 10.

[0030] See Figure 8 and Figure 9 In one embodiment, the height adjustment assembly 200 further includes a snap-fit ​​member 230. One or both of the first adjustment post 210 and the second adjustment post 220 are provided with a plurality of snap-fit ​​holes 211 arranged axially at intervals. The snap-fit ​​member 230 can selectively snap into one of the snap-fit ​​holes 211 to complete the positioning.

[0031] It should be noted that during assembly, the snap-fit ​​component 230 can be selectively snapped onto either the first adjusting post 210 or the second adjusting post 220. The snap-fit ​​hole 211 of the other first adjusting post 210 or second adjusting post 220 then engages with the snap-fit ​​component 230 to fix the first adjusting post 210 and the second adjusting post 220. The snap-fit ​​component does not need to distinguish between the first adjusting post and the second adjusting post, thus improving the ease of assembly of the cell test bracket 10.

[0032] See Figure 9 In one embodiment, the snap-fit ​​member 230 includes an elastic part 231 and a snap-fit ​​part 232. The snap-fit ​​member 230 is disposed on one of the first adjusting post 210 and the second adjusting post 220, and the snap-fit ​​hole 211 is disposed on the other of the first adjusting post 210 and the second adjusting post 220. The elastic part 231 can drive the snap-fit ​​part 232 to move elastically so as to engage in the snap-fit ​​hole 211. A plurality of snap-fit ​​holes 211 are also circumferentially opened around one or both of the first adjusting post 210 and the second adjusting post 220.

[0033] It should be noted that, in this embodiment, when assembling the cell test bracket 10, the operator can rotate the radial circumferential relative position between the first adjusting column 210 and the second adjusting column 220, so that the first adjusting column 210 and the second adjusting column 220 can be snapped and fixed at any angle. At the same time, the elastic part 231 drives the snapping part 232 to elastically telescopically connect with one of the first adjusting column 210 and the second adjusting column 220, which simplifies the assembly process between the first adjusting column 210 and the second adjusting column 220, and the structure is simple, improving the efficiency of disassembly and assembly of the cell test bracket 10, and further improving the adaptability of the cell test bracket 10.

[0034] Review Figure 4 In one embodiment, the first adjusting column 210 has a cavity 211 and a telescopic hole 213. One end of the elastic part 231 is located in the cavity 211 and is fixedly connected to the first adjusting column 210. The other end of the elastic part 231 is connected to the snap-fit ​​part 232. The snap-fit ​​part 232 is partially located in the telescopic hole 212 and is slidably connected to the first adjusting column 210.

[0035] Thus, by elastically driving the locking part 232 through the elastic part 231, the locking action is smooth and directionally accurate when the locking part 232 locks with one of the first adjusting post 210 or the second adjusting post 220, avoiding the locking part 232 from getting stuck and improving the reliability of the first adjusting post 210 or the second adjusting post 220.

[0036] Review Figure 5 and Figure 6 In one embodiment, the inner peripheral wall of the first cell positioning cavity 310 is provided with a plurality of first limiting flanges 320 at intervals along the circumferential direction, and the inner peripheral wall of the second cell positioning cavity 410 is provided with a plurality of second limiting flanges 420 at intervals along the circumferential direction. The first limiting flanges and the second limiting flanges abut against the cell to be tested to restrict the radial movement of the cell to be tested.

[0037] It should be noted that when the battery cell under test is sleeved on the first adapter sleeve 300 and the second adapter sleeve 400, the battery cell is limited and fixed by the first limiting flange 320 and the second limiting flange 420 to prevent the battery cell from shifting within the first battery cell positioning cavity 310 and the second battery cell positioning cavity 410, thereby avoiding measurement errors in the battery cell under test during testing.

[0038] Review Figure 5 and Figure 6Furthermore, each first adapter sleeve 300 has a plurality of circumferentially spaced first positioning grooves 330 formed therein, and each first limiting flange 320 is movably inserted into the corresponding first positioning groove 330 to position one end of the battery cell to be tested; each second adapter sleeve 400 has a plurality of circumferentially spaced second positioning grooves 430 formed therein, and each second limiting flange 420 is movably inserted into the corresponding first positioning groove 430 to position one end of the battery cell to be tested.

[0039] Understandably, when the first limiting flange 320 wears down due to clamping the battery cell under test, the worn first limiting flange 320 can be replaced, thus avoiding the need to replace the entire first adapter sleeve 300, thereby reducing testing costs and material waste. Similarly, when the second limiting flange 420 wears down due to clamping the battery cell under test, the worn first limiting flange 420 can be replaced, thus avoiding the need to replace the entire second adapter sleeve 400.

[0040] Furthermore, each first limiting flange 320 has a first arc surface at its end within the first positioning groove 330; and each second limiting flange 420 has a second arc surface at its end within the first positioning groove 430. This prevents scratches or indentations on the outer shell of the battery cell under test when it is fitted into the first adapter sleeve 300, and similarly prevents scratches or indentations on the outer shell of the battery cell under test when it is fitted into the second adapter sleeve 400. This further protects the structural integrity of the battery cell under test and prevents damage to the battery cell from affecting its internal resistance parameters, ensuring the accuracy of the test results. Moreover, the first and second arc surfaces act as guides, reducing the insertion resistance of the battery cell under test into the first and second adapter sleeves 300 and 400, thereby improving the assembly efficiency of the battery cell under test with the first and second adapter sleeves 300 and 400.

[0041] In one embodiment, a plurality of first limiting flanges 320 are spaced apart, and a plurality of second limiting flanges 420 are correspondingly arranged one-to-one with the plurality of first limiting flanges 320, thereby forming an axial heat dissipation channel along the inner peripheral wall of the first adaptable sleeve 300 and the inner peripheral wall of the second adaptable sleeve 400. This improves the heat dissipation capacity of the battery cell, effectively prevents heat accumulation in the battery cell under test, improves the safety of the battery cell under test, and avoids the battery cell under test from generating heat due to the thermal effect of the current during testing, which would increase the internal resistance of the battery cell test and reduce the test accuracy of the battery cell under test.

[0042] Review Figure 3 and Figure 4 In one embodiment, a first positioning flange 340 is provided between the outer peripheral side of the first adapter sleeve 300 and the first receiving groove, and a second positioning flange 440 is provided between the outer peripheral side of the second adapter sleeve 400 and the second receiving groove.

[0043] This ensures that the first adapter sleeve 300 can smoothly and accurately fit into the first receiving groove 111, while preventing the first adapter sleeve 300 from shifting within the first receiving groove 111, thus avoiding radial relative movement between the first adapter sleeve 300 and the first receiving groove 111, which would affect the testing of the battery cell under test; and that the second adapter sleeve 400 can smoothly and accurately fit into the second receiving groove 121, while preventing the second adapter sleeve 400 from shifting within the second receiving groove 121, thus avoiding radial relative movement between the second adapter sleeve 400 and the second receiving groove 121, which would affect the testing of the battery cell under test.

[0044] Review Figure 3 and Figure 4 In one embodiment, the outer peripheral wall of the first adapter sleeve 300 is provided with a plurality of first positioning flanges 340 at intervals along the circumferential direction, and the inner peripheral wall of the first receiving groove 111 is provided with a plurality of first guide grooves 1111 at intervals along the circumferential direction, and the plurality of first positioning flanges 340 are respectively engaged in the plurality of first guide grooves 1111; the outer peripheral wall of the second adapter sleeve 400 is provided with a plurality of second positioning flanges 440 at intervals along the circumferential direction, and the inner peripheral wall of the second receiving groove 121 is provided with a plurality of second guide grooves 1211 at intervals along the circumferential direction, and the plurality of second positioning flanges 440 are respectively engaged in the plurality of second guide grooves 1211.

[0045] It should be noted that by engaging the first positioning flange 340 in the first guide groove 1111 and engaging the second positioning flange 440 in the second positioning flange 440, the first and second adapter sleeves 300 and 400 are limited, thereby avoiding the torsional force generated by the vibration of the battery cell under test during the test, preventing relative rotation between the first and second adapter sleeves 300 and the battery cell under test during the test, ensuring that the polarity position of the battery cell under test remains constant, and ensuring the reliability of the electrical connection of the battery cell under test during the test. Because the multiple first positioning flanges 340 are engaged with the multiple first guide grooves 1111, the contact area between the first adapter sleeve 300 and the first receiving groove 111 is increased. And because the multiple second positioning flanges 440 are engaged with the multiple second guide grooves 1211, the contact area between the second adapter sleeve 400 and the second receiving groove 121 is increased. In this way, the stress of the battery cell under test is evenly distributed, and the structural strength and durability of the first adapter sleeve 300 and the second adapter sleeve 400 are improved.

[0046] In one embodiment, a plurality of first positioning flanges 340 are spaced apart, and a plurality of second positioning flanges 440 are correspondingly arranged one-to-one with the plurality of first positioning flanges 340, thereby forming axial heat dissipation channels along the outer peripheral walls of the first adaptable sleeve 300 and the second adaptable sleeve 400, thus establishing a heat conduction path for the battery cell under test and further promoting heat dissipation of the battery cell under test. At the same time, in conjunction with the axial heat dissipation channels on the inner peripheral walls of the first adaptable sleeve 300 and the second adaptable sleeve 400, the heat dissipation capacity of the battery cell can be further improved, effectively preventing heat accumulation in the battery cell under test and improving the safety of the battery cell under test.

[0047] Reference Figure 10 In one embodiment, the cell testing bracket 10 further includes multiple power connection components 400. Each power connection component 400 includes a power connection contact 410 and a power connection terminal 420. The power connection contact 410 is disposed in a first receiving groove 111, and the power connection terminal 420 is disposed in a second receiving groove 121. This allows the cells under test within the cell testing bracket 10 to be simultaneously and independently connected to the test circuit, enabling testing of individual cells under test without having to place the entire battery pack composed of multiple cells under test into the cell testing bracket 10 for testing, thus improving the testing efficiency of the cell under test testing process. Simultaneously, each power connection component 400 tests a single, independent cell, avoiding crosstalk in the test signals of the cell under test and ensuring the accuracy of the test results.

[0048] Reference Figure 10 Furthermore, each terminal 420 includes a mounting end 421, a connecting end 422, and an elastic element (not shown). The elastic element is disposed within the mounting end 421, and the mounting end 421 and the connecting end 422 are elastically connected through the elastic element. The mounting end 421 is disposed at the bottom of the second receiving groove 121. In this embodiment, when the battery cell under test placed in the second receiving groove 121 abuts against the connecting end 422, the battery cell under test utilizes the expansion and contraction of the elastic element to automatically compensate for the dimensional tolerance of the axial distance between the battery cell under test and the second receiving groove 121, ensuring that the connecting end 422 and the electrode of the battery cell under test maintain close contact and preventing errors in the test results.

[0049] Meanwhile, the elastic element elastically connects the power connection end 422 and the mounting end 421, so that when the battery cell test bracket 10 is subjected to external impact, it can buffer and absorb the vibration of the battery cell under test, prevent the power connection end 420 from being disconnected from the electrode of the battery cell under test, causing a short circuit in the battery cell under test, and also avoid the battery cell under test from being assembled and pressed too tightly with the second receiving groove 121, causing mechanical damage to the battery cell under test and the power connection end 420, thus improving the safety and durability of the battery cell test bracket 10.

[0050] This application also provides a cell testing device, including the cell testing bracket 10 of any of the above embodiments.

[0051] Compared with the prior art, this disclosure has at least the following advantages: 1. During assembly, the cell testing bracket 10 is assembled by placing the first adapter sleeves 300 one-to-one into the first receiving groove 111 and the second adapter sleeves 400 one-to-one into the second receiving groove 121. Then, one end of a cell to be tested is fitted into one of the first adapter sleeves 200 or the second adapter sleeve 300 to fix one end of the cell. After fixing one end of the cell, the distance between the first base 110 and the second base 120 is adjusted using the height adjustment component 200 according to the height of the cell, to accommodate the required height of the cell, allowing the other end of the cell to fall into another first adapter sleeve 300 or a second adapter sleeve 400. This secures the cell to be tested onto the cell testing bracket 10.

[0052] 2. At the same time, the first cell positioning cavity 310 and the second cell positioning cavity 410 are used to radially limit the cell under test to prevent the cell under test from moving during the test and avoid errors in the results of the cell under test.

[0053] 3. Furthermore, the first base 110 and the first adapter sleeve 300 are detachable, as are the second base 120 and the second adapter sleeve 400. This allows for the replacement of the first adapter sleeve 300 and the second adapter sleeve 400 with those matching the outer diameter of the battery cell under test, based on different diameters, to better secure the battery cell to the first base 110 and the second base 120. Therefore, the aforementioned battery cell testing bracket 10 can test battery cells of different heights and diameters without requiring replacement with a specific battery cell testing bracket 10, reducing material costs and manpower consumption, thereby improving the compatibility of the battery cell testing bracket 10.

[0054] The above embodiments merely illustrate several implementation methods of this disclosure, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery cell testing bracket, characterized in that, include: A base assembly, comprising a first base and a second base, wherein the first base has a first receiving groove and the second base has a second receiving groove, and the first receiving groove and the second receiving groove are correspondingly arranged; A height adjustment component is disposed between the first base and the second base for adjusting the distance between the first base and the second base; The first adapter sleeve is located in the first receiving groove and is detachably connected to the first base. The first adapter sleeve is provided with a first cell positioning cavity for preventing the cell from moving radially. The second adapter sleeve is located in the second receiving groove and is detachably connected to the second base 120. The second adapter sleeve is provided with a second cell positioning cavity for preventing the cell from moving radially.

2. The cell testing bracket according to claim 1, characterized in that, The height adjustment assembly includes a first adjustment column and a second adjustment column. The first adjustment column protrudes from the side of the first base facing the second base, and the second adjustment column protrudes from the side of the second base facing the first base. The first adjustment column and the second adjustment column are telescopically connected to each other, and the two can adjust the distance between the first base and the second base by moving relative to each other.

3. The cell testing bracket according to claim 2, characterized in that, The height adjustment assembly also includes a snap-fit ​​component. One or both of the first and second adjustment columns are provided with a plurality of snap-fit ​​holes arranged at intervals along the axial direction. The snap-fit ​​component can selectively snap into one of the snap-fit ​​holes to complete the positioning.

4. The cell testing bracket according to claim 3, characterized in that, The snap-fit ​​component includes an elastic part and a snap-fit ​​part. The snap-fit ​​component is disposed on one of the first adjusting post and the second adjusting post, and the snap-fit ​​hole is disposed on the other of the first adjusting post and the second adjusting post. The elastic part can drive the snap-fit ​​part to move elastically so as to engage in the snap-fit ​​hole.

5. The cell testing bracket according to claim 4, characterized in that, The first adjusting column has a cavity and a telescopic hole. One end of the elastic part is located in the cavity and is fixedly connected to the first adjusting column. The other end of the elastic part is connected to the snap-fit ​​part, which is located in the telescopic hole and is slidably connected to the first adjusting column.

6. The cell testing bracket according to claim 1, characterized in that, The inner peripheral wall of the first cell positioning cavity is provided with a plurality of first limiting flanges at intervals along the circumferential direction, and the inner peripheral wall of the second cell positioning cavity is provided with a plurality of second limiting flanges at intervals along the circumferential direction. The first limiting flanges and the second limiting flanges abut against the cell to be tested to restrict the radial movement of the cell to be tested.

7. The cell testing bracket according to claim 1, characterized in that, A first positioning flange is provided between the outer peripheral side of the first adapter sleeve and the first receiving groove, and a second positioning flange is provided between the outer peripheral side of the second adapter sleeve and the second receiving groove.

8. The cell testing bracket according to claim 7, characterized in that, The outer peripheral wall of the first adapter sleeve is provided with a plurality of first positioning flanges at intervals along the circumferential direction, and the inner peripheral wall of the first receiving groove is provided with a plurality of first guide grooves at intervals along the circumferential direction, and the plurality of first positioning flanges are respectively engaged in the plurality of first guide grooves; the outer peripheral wall of the second adapter sleeve is provided with a plurality of second positioning flanges at intervals along the circumferential direction, and the inner peripheral wall of the second receiving groove is provided with a plurality of second guide grooves at intervals along the circumferential direction, and the plurality of second positioning flanges are respectively engaged in the plurality of second guide grooves.

9. The cell testing bracket according to claim 1, characterized in that, The cell testing bracket also includes multiple power connection components, each of which includes a power connection contact and a power connection terminal. The power connection contact is disposed in a corresponding first receiving groove, and the power connection terminal is disposed in a corresponding second receiving groove.

10. A battery cell testing device, characterized in that, Includes the cell testing bracket as described in any one of claims 1-9.

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