Cylindrical battery testing device

Abstract

The utility model provides a cylindrical battery testing device. The cylindrical battery testing device comprises a bottom plate, a mounting seat, a negative electrode connecting assembly, a positive electrode connecting assembly and a testing assembly, the mounting seat is fixed on the bottom plate, and the top surface of the mounting seat is provided with array circular grooves for accommodating cylindrical batteries; the cathode connecting assembly is positioned on two sides of the bottom surface of the mounting seat and comprises a plurality of fixed first cathode connecting pieces, and one end is in contact with the bottom surface of the battery; the anode connecting assembly comprises a cover plate and a plurality of first anode connecting pieces, the cover plate is fixed on the top surface of the mounting seat, and one end of each anode connecting piece is in contact with the battery pole; the testing assemblies are located on the two sides of the installation base and comprise power devices, installation plates and positive and negative electrode probes, the power devices are fixed to the bottom plate and drive the installation plates to move horizontally, and the positive and negative electrode probes are connected with the positive and negative electrode connecting pieces respectively. The device can accommodate a plurality of batteries at one time through the array circular grooves, so that the test efficiency is improved; the positive and negative electrode connecting pieces are in accurate contact with the battery, the power device ensures reliable contact, errors are reduced, and the automation degree and efficiency of testing are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a cylindrical battery testing device. Background Art

[0002] Cylindrical batteries are widely used in numerous fields due to their high capacity, long cycle life, and adaptability to a wide range of ambient temperatures. These batteries play a vital role in numerous applications, including automotive energy, solar lamps, lawn lighting, electrical tools, toys, and photovoltaic energy. To ensure product quality, cylindrical batteries must undergo a series of routine tests before shipment, such as short-circuit and internal resistance tests.

[0003] Currently, conventional testing methods for cylindrical batteries typically involve using a fixture to hold the battery in place, and then manually contacting the positive and negative electrodes with a handheld probe for testing. This method not only increases the operator's workload but also results in low production efficiency.

[0004] Prior art, such as patent publication number CN219871482U, discloses a cylindrical battery testing fixture comprising a base, a positioning block, a probe, and a power assembly. The positioning block and a first power assembly are mounted on the base, with at least two probes located on either side of the positioning block. These probes are used to position the cylindrical battery, and the first power assembly propels the probes toward or away from the positioning block. Once the probes make contact with the battery's positive terminal, the power assembly stops, maintaining contact. This reduces labor intensity while enabling battery testing.

[0005] While the aforementioned tooling improves testing convenience and labor-saving effects, it still has certain limitations during use. In particular, when in use, the tooling tests multiple cylindrical batteries mounted on the positioning block one by one. During the test, the second power assembly is required to adjust the position of the positioning block to ensure that the probe and the cylindrical battery pole are aligned. This significantly reduces test efficiency and makes it impossible to achieve rapid, batch testing of multiple cylindrical batteries, affecting overall production efficiency. Utility Model Content

[0006] In view of this, the present invention proposes a cylindrical battery testing device to solve the problem that existing testing devices cannot achieve rapid and batch testing of multiple cylindrical batteries.

[0007] The technical solution of the present utility model is achieved as follows:

[0008] The utility model provides a cylindrical battery testing device, comprising:

[0009] base plate;

[0010] The mounting base is fixedly arranged on the bottom plate, and a plurality of circular grooves arranged in an array are vertically provided on the top surface of the mounting base for accommodating cylindrical batteries;

[0011] A negative electrode connection assembly is located on both sides of the bottom surface of the mounting base in the width direction, and includes a plurality of first negative electrode connectors fixedly arranged at intervals along the length direction of the mounting base, with one end of the first negative electrode connector being located at the bottom end of the circular groove for contacting the bottom surface of the cylindrical battery;

[0012] A positive electrode connection assembly includes a cover plate and a plurality of first positive electrode connectors fixedly mounted on the cover plate, the cover plate being fixedly mounted on the top surface of the mounting seat, the first positive electrode connectors and the first negative electrode connectors being arranged correspondingly above and below, and one end of the first positive electrode connector being used to contact the top surface electrode of the cylindrical battery;

[0013] The test assembly is located on both sides of the mounting base in the width direction, and includes a power device, a mounting plate, multiple positive probes and multiple negative probes. The power device is fixed on the base plate and is used to drive the mounting plate to move horizontally toward the mounting base. The positive probes are fixed at intervals at the top of the mounting plate and are used to be connected to the other end of the first positive connector. The negative probes are fixed at intervals at the bottom of the mounting plate and are used to be connected to the other end of the first negative connector.

[0014] On the basis of the above technical solution, preferably, a first negative electrode mounting groove and a first negative electrode connecting hole are opened on the bottom surface of the mounting seat, the first negative electrode mounting groove is perpendicular to the length direction of the mounting seat, the first negative electrode connecting hole is connected to the circular groove, the first negative electrode connector is horizontally fixed in the first negative electrode mounting groove, one end of the first negative electrode connector is located in the first negative electrode connecting hole and is provided with a first negative electrode spring sheet, and the other end of the first negative electrode connector extends out of the outside of the mounting seat.

[0015] On the basis of the above technical solution, preferably, the cover plate is provided with a first positive electrode mounting groove and a first positive electrode connection hole that are interconnected, the first positive electrode mounting groove corresponds to the first negative electrode mounting groove up and down, the first positive electrode connection hole corresponds to the first positive electrode connection hole up and down, the first positive electrode connector is horizontally fixed in the first positive electrode mounting groove, one end of the first positive electrode connector is located in the first positive electrode connection hole and is provided with a first positive electrode spring sheet, and the other end of the first positive electrode connector extends out of the outside of the mounting seat.

[0016] As an embodiment, the mounting seat is provided with two rows of circular grooves along the width direction, each negative electrode connection assembly corresponds to one row of circular grooves, and each positive electrode connection assembly corresponds to one row of circular grooves.

[0017] As another embodiment, the mounting seat is provided with 2n rows of circular grooves along the width direction, where n ≥ 2, each negative electrode connection assembly corresponds to n rows of circular grooves, and the n rows of circular grooves have multiple groups of circular groove units, each group of circular groove units has 2p circular grooves, where p ≥ 2, each group of circular groove units corresponds to two first negative electrode connectors, and 2m second negative electrode mounting grooves are arranged in parallel between the two first negative electrode mounting grooves, where m ≥ 1, the 2m second negative electrode mounting grooves are grouped in pairs, and the two second negative electrode mounting grooves in each group of second negative electrode mounting grooves are symmetrically arranged;

[0018] The negative electrode connection assembly also includes a second negative electrode connector horizontally fixed in the second negative electrode mounting groove, and the bottom surface of the mounting seat is also provided with a second negative electrode connection hole connected to the circular groove. One end of the second negative electrode connector is located in the second negative electrode connection hole and is provided with a second negative electrode spring sheet, and the other end of the second negative electrode connector extends out of the outside of the mounting seat.

[0019] On the basis of the above technical solution, preferably, a second positive electrode mounting slot equal in number to the first negative electrode mounting slot is arranged between the two first positive electrode mounting slots, and the second positive electrode mounting slot and the second negative electrode mounting slot are arranged correspondingly up and down, and the positive electrode connection assembly also includes a second negative electrode connector horizontally fixed in the second negative electrode mounting slot, and the top surface of the cover plate is also provided with a second positive electrode connection hole connected to the circular groove, one end of the second positive electrode connector is located in the second positive electrode connection hole and is provided with a second positive electrode spring sheet, and the other end of the second positive electrode connector extends out of the outside of the mounting seat.

[0020] Based on the above technical solution, preferably, the ends of the first negative connector and the second negative connector extending out of the mounting seat are provided with negative electrode plug holes connected to the negative electrode probe; the ends of the first positive connector and the second positive connector extending out of the mounting seat are provided with positive electrode plug holes connected to the positive electrode probe.

[0021] On the basis of the above technical solution, preferably, locking pieces are provided at the corners of the cover plate, and the locking pieces are used to fix the cover plate and the top surface of the mounting seat in connection.

[0022] On the basis of the above technical solution, preferably, handles are fixedly provided at both ends of the mounting base in the length direction.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The cylindrical battery testing device disclosed in the present invention can accommodate and test multiple cylindrical batteries at one time by providing a plurality of circular grooves arranged in an array on the mounting base, thereby significantly improving the testing efficiency; the positive and negative connectors are in precise contact with the battery poles and bottom surfaces, and the reliability of the contact is ensured through the control of the power device, thereby reducing the error caused by human operation; the power device of the test assembly can drive the mounting plate to move horizontally, so that the positive and negative probes are automatically docked with the corresponding positive and negative connectors, thereby reducing manual operation and improving the degree of automation and efficiency of the test.

[0025] (2) By integrating the negative electrode connection assembly on the bottom surface of the mounting base, the structure of the entire device is made more compact and lightweight, and does not occupy a large space. At the same time, the first negative electrode connector can be stably and firmly connected to the negative electrode of the cylindrical battery, thereby improving the reliability of the electrical connection.

[0026] (3) A positive electrode connection assembly is formed by integrating multiple first positive electrode connectors on the cover plate. The positive electrode connection assembly is a modular component. After the cylindrical battery is installed inside the mounting seat, the cover plate is directly fixed to the top surface of the mounting seat. This allows the first positive electrode connector and the first negative electrode connector to be reliably electrically connected to the two ends of the cylindrical battery respectively. At the same time, the cylindrical battery is firmly confined inside the circular groove, making it convenient to establish electrical connections with the positive and negative electrode connectors at one time through the positive and negative electrode probes on the test assembly, thereby greatly improving the testing efficiency of the cylindrical battery.

[0027] (4) The multi-row circular slot and grouping design enables efficient battery arrangement, improving the capacity and efficiency of the test device. The grouping structure (2p circular slots per group) makes the battery arrangement more orderly, facilitating quick identification and operation. The design of n rows and 2m mounting slots has good scalability, and the number of rows and slots can be increased as needed to meet the needs of different scales and types of tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the cylindrical battery testing device disclosed in the present utility model;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting base disclosed in the present utility model;

[0031] Figure 3 This is a schematic diagram of the assembly structure of the negative electrode connection assembly and the mounting base disclosed in the present utility model;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the positive electrode connection assembly disclosed in the present utility model;

[0033] Figure 5 This is a top view of the cylindrical battery testing device disclosed in the present utility model;

[0034] Figure 6 for Figure 5 Plane section view at AA in the middle;

[0035] Reference numerals:

[0036] S. Cylindrical battery; 1. Base plate; 2. Mounting base; 21. Circular groove; 3. Negative electrode connection assembly; 31. First negative electrode connector; 32. Second negative electrode connector; 4. Positive electrode connection assembly; 41. Cover plate; 42. First positive electrode connector; 43. Second positive electrode connector; 5. Test assembly; 51. Power unit; 52. Mounting plate; 53. Positive electrode probe; 54. Negative electrode probe; 22. First negative electrode mounting groove; 23. First negative electrode connection hole ; 24. Second negative electrode mounting slot; 25. Second negative electrode connecting hole; 311. First negative electrode spring clip; 321. Second negative electrode spring clip; 411. First positive electrode mounting slot; 412. First positive electrode connecting hole; 413. Second positive electrode mounting slot; 414. Second positive electrode connecting hole; 421. First positive electrode spring clip; 431. Second positive electrode spring clip; 30. Negative electrode plug-in hole; 40. Positive electrode plug-in hole; 6. Locking piece; L. Handle; D. Circular slot unit. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, combined Figure 2-6 The embodiment of the present utility model discloses a cylindrical battery testing device, including a base plate 1, a mounting seat 2, a negative electrode connection assembly 3, a positive electrode connection assembly 4 and a testing assembly 5.

[0039] The bottom plate 1 serves as the foundation of the entire device and provides stable support.

[0040] The mounting base 2 is fixedly set on the base plate 1. A plurality of circular grooves 21 arranged in an array are vertically set on the top surface of the mounting base 2 for accommodating cylindrical batteries S. In this embodiment, the plurality of circular grooves 21 are arranged at intervals along the length direction of the mounting base 2, and the plurality of circular grooves 21 are divided into at least two rows in the width direction of the mounting base 2. As a result, the entire mounting base 2 can accommodate multiple cylindrical batteries S at one time through the plurality of circular grooves 21, so that multiple cylindrical batteries S can be tested at the same time, thereby improving the test efficiency.

[0041] The multiple circular grooves 21 are divided into at least two rows in the width direction of the mounting base 2, so that the negative electrode connection assembly 3, the positive electrode connection assembly 4 and the test assembly 5 can be arranged on both sides of the width direction of the mounting base 2, thereby facilitating the simultaneous electrode connection of multiple cylindrical batteries S, thereby improving the test efficiency.

[0042] The negative electrode connection assembly 3 is located on both sides of the bottom surface of the mounting base 2 in the width direction, and includes multiple first negative electrode connectors 31 fixedly arranged at intervals along the length direction of the mounting base 2. One end of the first negative electrode connector 31 is located at the bottom end of the circular groove 21 and is used to contact the bottom surface of the cylindrical battery S to form a negative electrode connection.

[0043] The positive electrode connection assembly 4 includes a cover plate 41 and a plurality of first positive electrode connectors 42 fixedly arranged on the cover plate 41. The cover plate 41 is fixedly arranged on the top surface of the mounting seat 2. The first positive electrode connector 42 and the first negative electrode connector 31 are arranged correspondingly above and below. One end of the first positive electrode connector 42 is used to contact the top surface electrode of the cylindrical battery S to form a positive electrode connection.

[0044] In this embodiment, the cover plate 41 provides a mounting base for the first positive electrode connector 42. At the same time, the cover plate 41 is fixedly connected to the top surface of the mounting base 2, which can stably and firmly confine the cylindrical battery S in the circular groove 21, ensuring the structural stability of the cylindrical battery S in the circular groove 21 during the test.

[0045] The test assembly 5 is located on both sides of the mounting base 2 in the width direction, and includes a power device 51, a mounting plate 52, multiple positive probes 53 and multiple negative probes 54. The power device 51 is fixedly set on the base plate 1 and is used to drive the mounting plate 52 to move horizontally toward the mounting base 2. The positive probes 53 are fixed at intervals on the top of the mounting plate 52 and are used to connect to the other end of the first positive connector 42. The negative probes 54 are fixed at intervals on the bottom of the mounting plate 52 and are used to connect to the other end of the first negative connector 31.

[0046] In this embodiment, the power device 51 is a telescopic cylinder or other linear drive module, and the mounting plate 52 is vertically arranged between the power device 51 and the mounting seat 2. The driving end of the power device 51 is fixedly connected to the mounting seat 2. When the cylindrical battery S is installed on the mounting seat 2, the positive connection assembly 4 is installed on the top surface of the mounting seat 2. After the first negative connector 31 is connected to the negative pole of the cylindrical battery S and the first positive connector 42 is connected to the positive pole of the cylindrical battery S, the power device 51 drives the mounting plate 52 to move horizontally toward the mounting seat 2, so that each positive probe 53 is respectively docked with the corresponding first positive connector 42, and each negative probe 54 is respectively docked with the corresponding first negative connector 31. The positive probe 53 and the negative probe 54 are respectively connected to the tester through the test line, so that multiple cylinders can be tested at the same time, such as short circuit test and internal resistance test.

[0047] The cylindrical battery S testing device disclosed in the present invention can accommodate and test multiple cylindrical batteries S at a time by providing a plurality of circular grooves 21 arranged in an array on the mounting base 2, thereby significantly improving the testing efficiency; the positive and negative connectors are in precise contact with the battery poles and bottom surfaces, and the reliability of the contact is ensured through the control of the power device 51, thereby reducing the errors caused by human operation; the power device 51 of the test assembly 5 can drive the mounting plate 52 to move horizontally, so that the positive probe 53 and the negative probe 54 are automatically docked with the corresponding positive and negative connectors, thereby reducing manual operation and improving the automation and efficiency of the test.

[0048] In order to achieve the connection between the negative electrode connection assembly 3 and the negative electrode of the cylindrical battery S in the circular groove 21, the present embodiment adopts the following technical solution. Specifically, the bottom surface of the mounting seat 2 is provided with a first negative electrode mounting groove 22 and a first negative electrode connection hole 23 that are interconnected. The first negative electrode mounting groove 22 is perpendicular to the length direction of the mounting seat 2, and the first negative electrode connection hole 23 is connected to the circular groove 21. The inner diameter of the first negative electrode connection hole 23 is smaller than the inner diameter of the circular groove 21. In this way, the circular groove 21 can accommodate and support the cylindrical battery S, thereby preventing the cylindrical battery S from passing through the first negative electrode connection hole 23 from the bottom surface of the circular groove 21, ensuring that the cylindrical battery S is in the circular groove 21. The structure is stable. The first negative electrode connector 31 is fixedly arranged horizontally in the first negative electrode mounting groove 22. One end of the first negative electrode connector 31 is located in the first negative electrode connection hole 23 and is provided with a first negative electrode spring 311. Through the setting of the first negative electrode spring 311, appropriate elastic contact pressure can be provided to ensure good contact between the bottom surface of the cylindrical battery S and the first negative electrode connector 31, avoiding test errors caused by poor contact. The other end of the first negative electrode connector 31 extends out of the outside of the mounting seat 2, which is convenient for electrical connection with external test equipment through the negative electrode probe 54, making the connection of the entire test circuit more convenient and quick.

[0049] In this embodiment, the negative electrode connection assembly 3 is integrated into the bottom surface of the mounting base 2, making the structure of the entire device more compact and lightweight, and not occupying a large space. At the same time, the first negative electrode connector 31 can be stably and firmly connected to the negative electrode of the cylindrical battery S, thereby improving the reliability of the electrical connection.

[0050] In order to achieve the connection between the first positive electrode connector 42 in the positive electrode connection assembly 4 and the positive electrode of the cylindrical battery S, this embodiment adopts the following technical solution. Specifically, the cover plate 41 is provided with a first positive electrode mounting groove 411 and a first positive electrode connection hole 412 that are interconnected. The first positive electrode mounting groove 411 is perpendicular to the length direction of the cover plate 41, forming a space for mounting the first positive electrode connector 42.

[0051] The first positive electrode mounting groove 411 corresponds to the first negative electrode mounting groove 22 up and down, and the first positive electrode connection hole 412 corresponds to the first positive electrode connection hole 412 up and down. This structural setting ensures that the first negative electrode connector 31 and the first positive electrode connector 42 can be correctly connected to the two ends of the cylindrical battery S.

[0052] The first positive electrode connector 42 is fixedly arranged horizontally in the first positive electrode mounting groove 411 to ensure its stable position. One end of the first positive electrode connector 42 is located in the first positive electrode connection hole 412 and is provided with a first positive electrode spring 421. The provision of the first positive electrode spring 421 provides a certain degree of elasticity, ensuring good contact between the top surface of the cylindrical battery S and the positive electrode connector, avoiding test errors caused by poor contact. The other end of the first positive electrode connector 42 extends outside the mounting base 2, facilitating electrical connection with external test equipment via the positive electrode probe 53, making the connection of the entire test circuit more convenient and quick.

[0053] A positive electrode connection assembly 4 is formed by integrating multiple first positive electrode connectors 42 on the cover plate 41. The positive electrode connection assembly 4 is a modular component. After the cylindrical battery S is installed inside the mounting base 2, the cover plate 41 is directly fixed to the top surface of the mounting base 2. Then, the first positive electrode connector 42 and the first negative electrode connector 31 can be reliably electrically connected to the two ends of the cylindrical battery S respectively. At the same time, the cylindrical battery S is firmly confined inside the circular groove 21, which facilitates the establishment of electrical connection with the positive and negative electrode connectors at one time through the positive and negative electrode probes 54 on the test assembly 5, thereby greatly improving the testing efficiency of the cylindrical battery S.

[0054] In some embodiments, the mounting base 2 is provided with two rows of circular grooves 21 along the width direction, and the bottom end of each row of circular grooves 21 corresponds to a negative electrode connection assembly 3, and the top end of each row of circular grooves 21 corresponds to a positive electrode connection assembly 4. Placing the positive electrode connection assembly 4 and the negative electrode connection assembly 3 at the top and bottom ends of the two rows of circular grooves 21, respectively, makes the structural layout more reasonable, helps to simplify the battery installation process, and ensures that each battery can be correctly connected to the positive and negative poles of the test device. The top and bottom ends of the two rows of circular grooves 21 are clearly divided, so that the positive and negative pole positions can be quickly distinguished during installation and maintenance, and the operation is more convenient. The clear arrangement and connection method makes it easier to identify and operate each connection assembly during the test process, thereby improving the overall test efficiency.

[0055] As other embodiments, in order to meet more cylindrical battery S tests at one time, more than two rows of circular grooves 21 need to be set on the mounting base 2. In this embodiment, the mounting base 2 is provided with 2n rows of circular grooves 21 along the width direction, where n≥2. As a result, there are at least 4 rows of circular grooves 21 on the mounting base 2, and each negative electrode connection component 3 corresponds to n rows of circular grooves 21. For example, when there are 4 rows of circular grooves 21, each negative electrode connection component 3 corresponds to 2 rows of circular grooves 21; when there are 6 rows of circular grooves 21, each negative electrode connection component 3 corresponds to 3 rows of circular grooves 21.

[0056] There are multiple groups of circular groove units D in the n rows of circular grooves 21, and each group of circular groove units D has 2p circular grooves 21, where p≥2. As a result, each group of circular groove units D includes at least 4 circular grooves 21, and each group of circular groove units D corresponds to two first negative electrode connectors 31. 2m second negative electrode mounting grooves 24 are arranged in parallel between the two first negative electrode mounting grooves 22, where m≥1, meaning that there are at least 2 second negative electrode mounting grooves 24, and the 2m second negative electrode mounting grooves 24 are grouped in pairs, and the two second negative electrode mounting grooves 24 in each group of second negative electrode mounting grooves 24 are symmetrically arranged.

[0057] The negative electrode connection assembly 3 also includes a second negative electrode connector 32 horizontally fixed in the second negative electrode mounting groove 24. The bottom surface of the mounting seat 2 is also provided with a second negative electrode connection hole 25 connected to the circular groove 21. One end of the second negative electrode connector 32 is located in the second negative electrode connection hole 25 and is provided with a second negative electrode spring 321. The other end of the second negative electrode connector 32 extends out of the outside of the mounting seat 2.

[0058] In each group of circular slot units D, at least two second negative electrode connectors 32 are provided, that is, when the circular slot unit D has four circular slots 21, these four circular slots 21 are distributed in a rectangular shape. Therefore, the two first negative electrode connectors 31 are correspondingly connected to the two circular slots 21 near the edge of the mounting seat 2, and the two second negative electrode connectors 32 are located between the two first negative electrode connectors 31. The two second negative electrode connectors 32 are respectively connected to the other two circular slots 21 through the second negative electrode spring clips 321. The arrangement of the second negative electrode connectors 32 and the first negative electrode connectors 31 can ensure that the cylindrical batteries S in the circular slot unit D can all be connected to the corresponding negative electrode connectors.

[0059] The multiple rows of circular slots 21 and the grouping design enable efficient battery arrangement, increasing the capacity and efficiency of the test setup. The grouping structure (2p circular slots per group) provides a more organized battery arrangement, facilitating quick identification and access. The design of n rows and 2m mounting slots offers excellent scalability, allowing the number of rows and slots to be increased as needed to accommodate tests of varying scales and types.

[0060] By providing multiple rows of circular grooves 21 and their corresponding negative electrode connectors 3 on the mounting base 2, the design of multiple circular grooves 21 and the symmetrical arrangement of the second negative electrode mounting grooves 24 not only improve the efficiency of battery arrangement and connection, but also ensure the stability and reliability of the connection. The horizontally fixed second negative electrode connector 32 and its extended design provide convenient operation and good scalability, making the entire device more adaptable to diverse and complex testing needs.

[0061] On the basis of the above embodiment, when more than two rows of circular grooves 21 need to be set on the mounting seat 2, the corresponding positive electrode connection assembly 4 also needs to be adaptively changed. Specifically, a second positive electrode mounting groove 413 equal in number to the first negative electrode mounting groove 22 is provided between the two first positive electrode mounting grooves 411, and the second positive electrode mounting groove 413 and the second negative electrode mounting groove 24 are arranged in correspondence with each other up and down, ensuring the symmetry and consistency of the positive electrode connection assembly 4 and the negative electrode connection assembly 3.

[0062] The positive electrode connection assembly 4 also includes a second positive electrode connector 43 fixed horizontally in the second negative electrode mounting groove 24. The top surface of the cover plate 41 is also provided with a second positive electrode connection hole 414 connected to the circular groove 21. One end of the second positive electrode connector 43 is located in the second positive electrode connection hole 414 and is provided with a second positive electrode spring 431. The other end of the second positive electrode connector 43 extends out of the outside of the mounting base 2.

[0063] The design of the positive electrode connection assembly 4 is consistent with that of the negative electrode connection assembly 3, and has good scalability. The number of rows and slots can be increased as needed to adapt to test requirements of different scales and types.

[0064] To facilitate a reliable connection between the negative connector and the negative probe 54, this embodiment provides a negative plug-in hole 30 for connecting to the negative probe 54 at one end where the first and second negative connectors 31 and 32 extend beyond the mounting base 2. To facilitate a reliable connection between the positive connector and the positive probe 53, this embodiment provides a positive plug-in hole 40 for connecting to the positive probe 53 at one end where the first and second positive connectors 42 and 43 extend beyond the mounting base 2. This allows for plug-in connection between the probes and the plug-in holes, improving the convenience of electrical connection, while also enhancing the reliability of the electrical connection and the accuracy of the test.

[0065] In this embodiment, a locking member 6 is provided at a corner of the cover plate 41, and the locking member 6 is used to securely connect the cover plate 41 to the top surface of the mounting base 2. In some embodiments, the locking member 6 can be a bolt or a butterfly nut.

[0066] Preferably, handles L are fixedly provided at both ends of the mounting base 2 in the length direction, so that the entire device can be lifted and moved conveniently by the handles L.

[0067] The method of using the cylindrical battery S test device of the present utility model is as follows:

[0068] The cylindrical batteries S are vertically installed in each circular groove 21 respectively. At this time, the negative electrode spring piece at the bottom end of the circular groove 21 is in elastic contact with the bottom end of the cylindrical battery S, thereby establishing a connection between the negative electrode connector and the negative end of the cylindrical battery S. The cover plate 41 is fixedly installed on the top surface of the mounting seat 2. At this time, the positive electrode spring piece is in elastic contact with the top surface electrode of the cylindrical battery S. Due to the pressure of the cover plate 41, the cylindrical battery S is firmly fixed in the circular groove 21, thereby realizing that the positive electrode connector and the negative electrode connector are respectively connected to the two ends of the cylindrical battery S. The power device 51 at both ends of the mounting seat 2 drives the mounting plate 52 to move toward the mounting seat 2, thereby realizing that the positive electrode probe 53 and the negative electrode probe 54 are respectively connected to the positive electrode connector and the negative electrode connector. The positive electrode probe 53 and the negative electrode probe 54 are connected to the external testing equipment, thereby realizing the simultaneous testing of multiple cylindrical batteries S.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cylindrical battery testing device, characterized in that: include: Bottom plate (1); A mounting seat (2) is fixedly mounted on the bottom plate (1), and a top surface of the mounting seat (2) is vertically provided with a plurality of circular grooves (21) arranged in an array for accommodating cylindrical batteries (S); A negative electrode connection assembly (3) is located on both sides of the bottom surface of the mounting seat (2) in a width direction, and includes a plurality of first negative electrode connectors (31) fixedly arranged at intervals along the length direction of the mounting seat (2), one end of the first negative electrode connector (31) is located at the bottom end of the circular groove (21) and is used to contact the bottom surface of the cylindrical battery (S); A positive electrode connection assembly (4) includes a cover plate (41) and a plurality of first positive electrode connectors (42) fixedly arranged on the cover plate (41), wherein the cover plate (41) is fixedly arranged on the top surface of the mounting seat (2), the first positive electrode connector (42) and the first negative electrode connector (31) are arranged correspondingly above and below, and one end of the first positive electrode connector (42) is used to contact the top surface pole of the cylindrical battery (S); The test assembly (5) is located on both sides of the mounting seat (2) in the width direction, and includes a power device (51), a mounting plate (52), a plurality of positive electrode probes (53) and a plurality of negative electrode probes (54). The power device (51) is fixedly arranged on the bottom plate (1) and is used to drive the mounting plate (52) to move horizontally toward the mounting seat (2). The positive electrode probes (53) are fixed at intervals on the top of the mounting plate (52) and are used to be connected to the other end of the first positive electrode connector (42). The negative electrode probes (54) are fixed at intervals on the bottom of the mounting plate (52) and are used to be connected to the other end of the first negative electrode connector (31).

2. The cylindrical battery testing device according to claim 1, wherein: The bottom surface of the mounting seat (2) is provided with a first negative electrode mounting groove (22) and a first negative electrode connection hole (23) that are interconnected. The first negative electrode mounting groove (22) is perpendicular to the length direction of the mounting seat (2). The first negative electrode connection hole (23) is connected to the circular groove (21). The first negative electrode connector (31) is horizontally fixed in the first negative electrode mounting groove (22). One end of the first negative electrode connector (31) is located in the first negative electrode connection hole (23) and is provided with a first negative electrode spring (311). The other end of the first negative electrode connector (31) extends outside the mounting seat (2).

3. The cylindrical battery testing device according to claim 2, wherein: The cover plate (41) is provided with a first positive electrode mounting groove (411) and a first positive electrode connection hole (412) that are interconnected. The first positive electrode mounting groove (411) corresponds to the first negative electrode mounting groove (22) in upper and lower positions, and the first positive electrode connection hole (412) corresponds to the first positive electrode connection hole (412) in upper and lower positions. The first positive electrode connector (42) is horizontally fixedly arranged in the first positive electrode mounting groove (411). One end of the first positive electrode connector (42) is located in the first positive electrode connection hole (412) and is provided with a first positive electrode spring (421). The other end of the first positive electrode connector (42) extends out of the outside of the mounting seat (2).

4. The cylindrical battery testing device according to claim 3, wherein: The mounting seat (2) is provided with two rows of circular grooves (21) along the width direction, the bottom end of each row of circular grooves (21) corresponds to a negative electrode connection assembly (3), and the top end of each row of circular grooves (21) corresponds to a positive electrode connection assembly (4).

5. The cylindrical battery testing device according to claim 3, wherein: The mounting seat (2) is provided with 2n rows of circular grooves (21) along the width direction, wherein n≥2, each negative electrode connection assembly (3) corresponds to n rows of circular grooves (21), and the n rows of circular grooves (21) have multiple groups of circular groove units (D), each group of circular groove units (D) has 2p circular grooves (21), wherein p≥2, each group of circular groove units (D) corresponds to two first negative electrode connectors (31), and 2m second negative electrode mounting grooves (24) are provided in parallel between the two first negative electrode mounting grooves (22), wherein m≥1, the 2m second negative electrode mounting grooves (24) are arranged in pairs, and the two second negative electrode mounting grooves (24) in each group of second negative electrode mounting grooves (24) are symmetrically arranged; The negative electrode connection assembly (3) further includes a second negative electrode connector (32) fixedly arranged horizontally in the second negative electrode mounting groove (24); the bottom surface of the mounting seat (2) is further provided with a second negative electrode connection hole (25) communicating with the circular groove (21); one end of the second negative electrode connector (32) is located in the second negative electrode connection hole (25) and is provided with a second negative electrode spring (321); the other end of the second negative electrode connector (32) extends outside the mounting seat (2).

6. The cylindrical battery testing device according to claim 5, wherein: A number of second positive electrode mounting grooves (413) equal to the number of first negative electrode mounting grooves (22) is provided between the two first positive electrode mounting grooves (411); the second positive electrode mounting grooves (413) and the second negative electrode mounting grooves (24) are provided in correspondence with each other in the upper and lower directions; the positive electrode connection assembly (4) further comprises a second positive electrode connector (43) fixedly provided horizontally in the second negative electrode mounting groove (24); a second positive electrode connection hole (414) communicating with the circular groove (21) is further provided on the top surface of the cover plate (41); one end of the second positive electrode connector (43) is located in the second positive electrode connection hole (414) and is provided with a second positive electrode spring (431); and the other end of the second positive electrode connector (43) extends out of the outside of the mounting seat (2).

7. The cylindrical battery testing device according to claim 4 or 6, wherein: One end of the first negative electrode connector (31) and the second negative electrode connector (32) extending out of the mounting seat (2) is provided with a negative electrode plug hole (30) connected to a negative electrode probe (54); and one end of the first positive electrode connector (42) and the second positive electrode connector (43) extending out of the mounting seat (2) is provided with a positive electrode plug hole (40) connected to a positive electrode probe (53).

8. The cylindrical battery testing device according to claim 1, wherein: The corners of the cover plate (41) are provided with locking pieces (6), which are used to securely connect the cover plate (41) and the top surface of the mounting seat (2).

9. The cylindrical battery testing device according to claim 1, wherein: Handles (L) are fixedly provided at both ends of the mounting seat (2) in the length direction.

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