Lithium battery compression resistance test equipment and method for communication base station

Abstract

The invention relates to the technical field of compression test equipment, and discloses a lithium battery compression test device and method for a communication base station, and the lithium battery compression test device comprises a test device main body. And the local testing unit comprises a bearing frame and a testing column, a testing head is installed at the end, away from the limiting block, of the testing column, and the testing head is used for carrying out compression resistance testing on the lithium battery, so that compression resistance testing can be conveniently carried out on the corner position and the local area on the plane position of the lithium battery, and local compression resistance data of the lithium battery is obtained. The local testing unit can accurately act on weak parts such as corners, stress differences of different positions are effectively buffered through cooperation of a testing block, a feeler lever and a second pressure detection sensor, and the problem that the pressure bearing capacities of different parts of a lithium battery are remarkably different is effectively solved. And the overall structural stability of the battery is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure resistance testing equipment, and more particularly, to a pressure resistance testing device and method for lithium batteries used in communication base stations. Background Art

[0002] Lithium batteries used in communication base stations are crucial energy storage components in the communications sector. They consist of a positive electrode, a negative electrode, an electrolyte, and a separator, relying on the reversible shuttle of lithium ions between the positive and negative electrodes to achieve charging and discharging. In actual base station usage, batteries may be subject to various external pressures, such as those from surrounding components during installation and collisions and compression during transportation. Furthermore, if the battery's pressure resistance is insufficient and internal structure damage occurs under pressure, this can lead to safety hazards such as short circuits, electrolyte leaks, and even serious consequences such as fires and explosions.

[0003] In the existing technology, compression testing equipment is equipped with an adjustable pressure-applying device that can accurately control and gradually increase the pressure on the lithium battery, simulating the squeezing conditions that the battery may encounter during actual use, transportation, and storage. It is also equipped with high-precision pressure sensors and data recording modules to monitor and record the pressure values and corresponding changes in the battery in real time, so as to determine whether the lithium battery will suffer structural damage, performance degradation, etc. under different pressures.

[0004] Existing lithium battery compression testing devices and methods mostly focus on testing the overall battery's compression resistance. This involves applying pressure to the entire lithium battery and monitoring its overall structural integrity and performance changes under pressure to assess its compression resistance. However, different parts of a lithium battery vary significantly in their ability to withstand pressure. For example, the corners of a battery, due to their unique structural shape, experience more pronounced stress concentration when subjected to external forces. Compared to the center of the battery's flat surface, these areas are more susceptible to deformation and damage, which in turn affects the overall structural stability of the battery. Summary of the Invention

[0005] The present invention provides a lithium battery pressure test device and method for communication base stations, which solves the technical problem in the related art that there are significant differences in the ability of different parts of the lithium battery to withstand pressure. Compared with the planar center area of the battery, the corners of the battery are more prone to deformation, damage, etc., which in turn affects the overall structural stability of the battery.

[0006] A first aspect of the present invention discloses a lithium battery compression test device for a communication base station, comprising a test device body, the test device body comprising a cabinet, and a first load-bearing platform and a second load-bearing platform provided on the cabinet, a compression test plate provided on a side of the second load-bearing platform close to the cabinet, a second telescopic member mounted on the second load-bearing platform, and a second movable frame mounted on the telescopic end of the second telescopic member;

[0007] A local testing unit is arranged on the second movable frame, and the local testing unit includes a supporting frame, which is installed on the second movable frame. A plurality of movable grooves are provided on the supporting frame, and a movable rod is slidably connected in the movable groove. A limit block is installed on the movable rod, and a test column is installed at the end of the limit block away from the movable rod. A test head is installed at the end of the test column away from the limit block. A third spring is provided on the test column. The test head is used to perform pressure resistance testing on the lithium battery, thereby facilitating pressure resistance testing of the corner positions of the lithium battery and local areas on the plane position to obtain local pressure resistance data of the lithium battery.

[0008] As a further optimization scheme of the present invention, a contact plate is provided on the side of the pressure test plate close to the cabinet, and a first pressure detection sensor is installed on the contact plate. Multiple groups of first guide rods are slidably connected to the pressure test plate, and the first guide rods are fixedly connected to the contact plate. A first spring is provided on the first guide rod, and the two ends of the first spring are respectively fixedly connected to the pressure test plate and the contact plate.

[0009] As a further optimization scheme of the present invention, a detection groove is opened in the test head, a test block is slidably connected in the detection groove, a touch rod is installed on the test block, and a second spring is provided on the touch rod. A second pressure detection sensor is installed in the detection groove, and the second pressure detection sensor is aligned with the position of the touch rod.

[0010] As a further optimization scheme of the present invention, grooves are symmetrically provided on the movable slot, and protrusions are symmetrically installed on the movable rod. The positional relationship between the grooves and the protrusions has two states, one being the initial state and the other being the locked state. In the initial state, the positions of the grooves and the protrusions correspond one to one, and when the movable slot moves outside the movable rod, the protrusions are slidably connected in the grooves. In the locked state, the positions of the grooves and the protrusions are axially centered on the center of the movable rod, and the protrusions are rotated ninety degrees so that the grooves and the protrusions abut against each other, thereby locking and fixing the movable rod.

[0011] As a further optimization scheme of the present invention, a support plate is installed on the second movable frame, and a third movable frame is slidably connected to the support plate, a bearing in the third movable frame is connected to a first shaft sleeve, and a spline shaft is slidably connected in the first shaft sleeve, and the spline shaft bearing is connected to the second movable frame, and a first rack plate is symmetrically provided on the third movable frame, and a gear column is provided on the side away from the first rack plate, and the gear column is located outside the movable rod, and the gear column is fixedly connected to the limit rod.

[0012] As a further optimization scheme of the present invention, a movable cavity is opened in the third movable frame, and the bearing in the movable cavity is connected to a second sleeve, the second sleeve is slidably connected to the spline shaft, a cam is installed on the second sleeve, and arc blocks are installed on the side close to the second rack plate, and the arc blocks are in contact with the cam, a third telescopic member is installed on the second movable frame, and a second rack plate is installed at the telescopic end of the third telescopic member, a transmission gear is meshed and connected on the second rack plate, and the transmission gear is fixedly connected to the spline shaft.

[0013] As a further optimization solution of the present invention, the side of the third movable frame close to the second rack plate is slidably connected to multiple sets of second guide rods, and the end of the second guide rod away from the third movable frame is fixedly connected to the second rack plate, and a fourth spring is provided on the second guide rod.

[0014] As a further optimization scheme of the present invention, a rotating drive member is installed on the second movable frame, and a screw is installed on the output shaft of the rotating drive member. The screw is rotatably connected to the second movable frame through a bearing. A screw sleeve is threadedly connected to the screw, and the screw sleeve is fixedly connected to the third movable frame.

[0015] As a further optimization solution of the present invention, a covering film is provided on the side of the contact plate away from the compression test plate, the covering film is provided with multiple local covering areas, and a telescopic area is provided between the local covering areas and the covering film.

[0016] A second aspect of the present invention discloses a method for compressive testing of lithium batteries for communication base stations, using the above-mentioned compressive testing device for lithium batteries for communication base stations, comprising the following steps:

[0017] S1. Place the lithium battery to be tested on the cabinet and prepare for compression testing.

[0018] S2. Control the first telescopic member to perform telescopic movement, and the compression test plate controls the contact plate to perform an overall compression test on the lithium battery to obtain overall compression data of the lithium battery;

[0019] S3. When performing overall compression test, the cover film protects the compression test plate and the contact plate to prevent corrosion of the compression test plate and the contact plate.

[0020] S4. Controlling the second telescopic member to perform telescopic movement, and the test block performs a local compressive test on the lithium battery, and performs compressive test on the corners and local areas of the lithium battery on the plane to obtain local compressive data of the lithium battery;

[0021] S5. When performing local compressive strength data testing, the local covering area of the covering film protects the test block to prevent corrosion of the test block;

[0022] S6. After the overall compression test and the local compression test are completed, the tested lithium battery is disassembled.

[0023] The beneficial effects of the present invention are as follows: the present invention adopts a local test unit that can accurately act on weak parts such as corners. Due to the special structure of corners, force is easily concentrated, and local detection can accurately measure the pressure and deformation. Through the cooperation of the test block, the touch rod and the second pressure detection sensor, the force differences at different positions are effectively buffered, and the pressure is evenly and stably transmitted to the second pressure detection sensor, avoiding data errors caused by local unevenness, ensuring that the test results are accurate and reliable, and effectively solving the significant differences in the ability of different parts of the lithium battery to withstand pressure. Compared with the planar center area of the battery, the corners of the battery are more prone to deformation, damage, etc., which in turn affects the overall structural stability of the battery. Technical problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0026] Figure 3 The present invention Figure 2 Schematic diagram of the local three-dimensional structure;

[0027] Figure 4 This is a three-dimensional structural diagram of the positional relationship between the compression test plate and the local test unit of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the compression test board and the local test unit of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the compression test board of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of a local testing unit of the present invention;

[0031] Figure 8 It is a schematic diagram of a partial three-dimensional cross-sectional structure of a local test unit of the present invention;

[0032] Figure 9 This is a schematic structural diagram of the positional relationship between the first rack plate and the gear column of the present invention;

[0033] Figure 10 It is a schematic diagram of the structure of the carrier frame of the present invention;

[0034] Figure 11 This is a schematic structural diagram of the connection relationship between the third movable frame and the first rack plate of the present invention;

[0035] Figure 12 This is a schematic structural diagram of the connection relationship between the cam and the arc block of the present invention;

[0036] Figure 13 It is a schematic diagram of the cam three-dimensional structure of the present invention.

[0037] In the figure: 100, test equipment body; 101, cabinet; 102, first bearing platform; 103, column; 104, first telescopic member; 105, first movable frame; 106, guide column; 107, second bearing platform; 108, bracket; 109, pressure test plate; 1091, contact plate; 1092, first pressure detection sensor; 1093, first guide rod; 1094, first spring; 1095, covering film; 1096, buckle; 1097, partial covering area; 1098, telescopic area; 110, second telescopic member; 111, second movable frame; 112, controller;

[0038] 200, local test unit; 201, carrier; 202, movable groove; 203, movable rod; 204, limit block; 205, test column; 206, test head; 207, test block; 208, second spring; 209, second pressure detection sensor; 210, groove; 211, protrusion; 212, third spring; 213, limit groove; 214, limit rod; 215, support plate; 216, third movable frame; 217, first shaft sleeve; 218, spline shaft; 219, first rack plate; 220, gear column; 221, second shaft sleeve; 222, cam; 223, arc block; 224, second guide rod; 225, fourth spring; 226, rotary drive member; 227, screw; 228, screw sleeve; 229, third telescopic member; 230, second rack plate; 231, transmission gear. DETAILED DESCRIPTION

[0039] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0040] according to Figure 1 、 Figure 2 and Figure 3As shown, a lithium battery compression test device for a communication base station includes a test device body 100, the test device body 100 includes a cabinet 101, and a first load-bearing platform 102 is provided on the cabinet 101. A plurality of columns 103 are provided between the cabinet 101 and the first load-bearing platform 102, and the columns 103 are fixedly connected to the cabinet 101 and the first load-bearing platform 102. Specifically, a first telescopic member 104 is installed on the first load-bearing platform 102, and a first movable frame 105 is installed at the telescopic end of the first telescopic member 104 through the first load-bearing platform 102. The first movable frame 105 is internally slidably connected to a plurality of guide columns 106, and the guide columns 106 are fixedly connected to the cabinet 101 and the first load-bearing platform 102.

[0041] In addition, a second load-bearing platform 107 is installed on the first movable frame 105, and a pressure test plate 109 is provided on the side of the second load-bearing platform 107 close to the cabinet 101. When the pressure resistance performance of the lithium battery is tested, the first telescopic member 104 is controlled to perform telescopic movement. As the first telescopic member 104 performs telescopic movement, the first movable frame 105 connected thereto moves synchronously, thereby driving the second load-bearing platform 107 to move up and down along the setting track of the first telescopic member 104, so that the pressure test plate 109 performs extrusion detection on the lithium battery.

[0042] In addition, a bracket 108 is installed between the second carrying platform 107 and the compression test plate 109 .

[0043] according to Figures 3 to 6 As shown, a contact plate 1091 is provided on the side of the pressure test plate 109 close to the cabinet 101, and a first pressure detection sensor 1092 is installed on the contact plate 1091. Multiple groups of first guide rods 1093 are slidably connected to the pressure test plate 109, and the first guide rods 1093 are fixedly connected to the contact plate 1091. A first spring 1094 is provided on the first guide rod 1093, and the two ends of the first spring 1094 are fixedly connected to the pressure test plate 109 and the contact plate 1091 respectively.

[0044] It should be understood that when the lithium battery is subjected to an extrusion test, the pressure test plate 109 will apply a gradually increasing extrusion force to the lithium battery. By performing pressure testing on the lithium battery and utilizing the first pressure detection sensor 1092 and the data acquisition and analysis system, the lithium battery is comprehensively tested for its deformation under different pressures, internal structural stability and other pressure resistance performance indicators, thereby accurately evaluating whether the lithium battery can meet various pressure scenarios that may be faced in actual application scenarios, and providing key and reliable data support for the quality control of the lithium battery and subsequent optimization and improvement, so as to facilitate the testing of the pressure resistance of the lithium battery.

[0045] It should be noted that the first pressure detection sensor 1092 can accurately and in real time detect the pressure applied by the compression test plate 109 to the lithium battery. After the test begins, as the compression test plate 109 gradually compresses the lithium battery, the first pressure detection sensor 1092 converts the pressure changes into an electrical signal. The data recorded by the first pressure detection sensor 1092 can clearly determine the maximum pressure that the lithium battery can withstand, namely the compressive limit.

[0046] Further, according to Figures 1 to 4 As shown, a second telescopic member 110 is installed on the second supporting platform 107, and a second movable frame 111 is installed on the telescopic end of the second telescopic member 110, and a local test unit 200 is provided on the second movable frame 111. Specifically, in actual use scenarios, the ability of different parts of lithium batteries to withstand pressure is different, and some local areas are relatively weak, such as the corners of the battery. Due to the special structural shape of the corners, the stress concentration phenomenon is more obvious when squeezed by external force, and it is more prone to deformation, breakage, etc. than the flat center area of the battery. The local test unit 200 can accurately apply pressure probes to these corners, and accurately measure the pressure and corresponding deformation data of the local area through sensors, so as to understand the specific compressive performance of these weak parts.

[0047] Among them, the first telescopic part 104 and the second telescopic part 110 can be linear drive components such as hydraulic cylinders and electric push rods. The cabinet 101 is also equipped with a controller 112 for controlling the lithium battery to perform pressure resistance testing. Through the data acquisition and analysis system in the controller 112, the lithium battery's deformation under different pressures, internal structural stability and other aspects of pressure resistance performance indicators are comprehensively tested.

[0048] according to Figure 5 and Figure 7 As shown, the local test unit 200 includes a carrier frame 201, which is installed on the second movable frame 111. A plurality of movable slots 202 are provided on the carrier frame 201, and a movable rod 203 is slidably connected in the movable slot 202. Through the setting of the movable slot 202, the movable rod 203 can move up and down in the movable slot 202; a limit block 204 is installed on the movable rod 203, and a test column 205 is installed at one end of the limit block 204 away from the movable rod 203, and a test head 206 is installed at one end of the test column 205 away from the limit block 204. The test head 206 is used to perform a pressure test on the lithium battery, thereby facilitating the pressure test on the corner positions of the lithium battery and the local areas on the plane position to obtain the local pressure data of the lithium battery.

[0049] It should be noted that the compression test plate 109 has multiple through-slots for the test heads 206 to pass through. When performing a local compression test on a lithium battery, the movement of a single set of test posts 205 is controlled to allow the test heads 206 in that set to pass through the through-slots, allowing the test heads 206 to perform a local pressure test on the lithium battery.

[0050] The test head 206 has a detection slot within which a test block 207 is slidably connected. During the pressure application process, the reaction force exerted on the test block 207 is monitored in real time by a second pressure detection sensor 209 built into the detection slot. The second pressure detection sensor 209 can accurately sense minute pressure changes and promptly feed back relevant data, such as the pressure value, to the controller 112. The controller 112 then collects, analyzes, and records this data, enabling a comprehensive and accurate assessment of the pressure resistance of the lithium battery at that location.

[0051] Specifically, a touch rod is mounted on the test block 207, and a second spring 208 is attached to the touch rod. The two ends of the second spring 208 are fixedly connected to the test head 206 and the test slot, respectively. A second pressure detection sensor 209 is mounted in the test slot and aligned with the touch rod. In this embodiment, when the test block 207 performs a pressure test on the lithium battery, the provision of the touch rod ensures that the pressure is more evenly and accurately transmitted to the second pressure detection sensor 209.

[0052] That is to say, when performing local pressure resistance testing on a lithium battery, the force conditions at different positions on the surface of the lithium battery may be different. The touch rod can effectively buffer and adjust these different pressures by virtue of the elastic setting of the second spring 208 and the cooperation with the detection groove, and then transmit them to the second pressure detection sensor 209 in a relatively consistent and stable manner, avoiding the problem of large errors in sensor detection data due to local uneven pressure, thereby greatly improving the accuracy of the detection data.

[0053] At the same time, the test block 207 cooperates with the touch rod to block the second pressure detection sensor 209 from the lithium battery, thereby protecting the second pressure detection sensor 209 to avoid being exposed and damaged when the lithium battery is tested.

[0054] according to Figure 6As shown, a cover film 1095 is provided on the side of the contact plate 1091 away from the compression test plate 109. Covering the contact plate 1091 with a layer of cover film 1095 protects the contact plate 1091 and the test block 207. When a lithium battery bulges or deforms during compression testing due to internal pressure changes, abnormal chemical reactions, or other factors, its surface morphology becomes irregular and unflat. If the pressure test continues, the bulge or deformation may cause abnormal compression and friction with the test head 206, potentially scratching the test head 206 or subjecting it to uneven impact.

[0055] If the outer shell of a lithium battery ruptures during a pressure test, the electrolyte and other substances inside may leak out. Lithium battery electrolyte is corrosive. Once it comes into contact with the test head 206, it will corrode the metal and other materials of the test head 206, causing the test head 206 to become uneven, which in turn leads to uneven force application during subsequent pressure tests on the lithium battery. In this embodiment, the cover film 1095 is provided to cover the contact plate 1091 and the test block 207, effectively isolating and protecting the contact plate 1091 and the test block 207, thereby preventing the electrolyte from corroding the contact plate 1091 and the test block 207, or preventing the electrolyte from penetrating the first pressure detection sensor 1092 and the second pressure detection sensor 209.

[0056] Specifically, arc-shaped clips 1096 are provided at both ends of the cover film 1095. A slot is defined on the side of the compression test plate 109 corresponding to the clips 1096, and the slot engages with the clips 1096. When the cover film 1095 is assembled, the clips 1096 are inserted into the slots to secure the cover film 1095, effectively isolating the contact plate 1091 from the test block 207.

[0057] Furthermore, the covering film 1095 is provided with a plurality of partial covering areas 1097, which correspond one-to-one with the positions of the test block 207, thereby facilitating shielding of the test block 207. A stretchable area 1098 is provided between the partial covering areas 1097 and the covering film 1095. The stretchable area 1098 achieves its stretching function through regular or relatively irregular folds, and when not subjected to external force, it is in a naturally folded state.

[0058] When the localized masking area 1097 of the masking film 1095 needs to be stretched, the wrinkles are gradually stretched and flattened, increasing the length or area of the area, creating a stretching effect. Once the external force is removed, the wrinkles return to their original shape due to the material's inherent resilience. The provision of the stretching area 1098 allows the test head 206 to elastically stretch through the masking film 1095 during localized compression testing of lithium batteries, protecting the test head 206. Elastic drawstrings can be embedded within the wrinkled area to assist in resetting the stretching area 1098.

[0059] according to Figure 8 、 Figure 9 and Figure 10 As shown, grooves 210 are symmetrically formed on the movable slot 202, and protrusions 211 are symmetrically mounted on the movable rod 203. The positional relationship between the grooves 210 and the protrusions 211 exists in two states, one being an initial state and the other being a locked state.

[0060] In the initial state, the positions of the groove 210 and the protrusion 211 correspond one to one. When the movable slot 202 moves outside the movable rod 203, the protrusion 211 is slidably connected in the groove 210.

[0061] In the locked state, the positions of the groove 210 and the protrusion 211 are centered on the movable rod 203, and the protrusion 211 is rotated ninety degrees, so that the groove 210 and the protrusion 211 form a cross shape, so that the groove 210 and the protrusion 211 abut against each other, locking and fixing the movable rod 203.

[0062] The test column 205 is provided with a third spring 212, with its two ends respectively contacting the compression test plate 109 and the stop block 204. The third spring 212 elastically supports the test column 205, maintaining the third spring 212 in an extended position by default. This supports and limits the test column 205, ensuring that the test head 206 is normally located within the through slot.

[0063] Furthermore, a plurality of limiting grooves 213 are formed on the carrier 201, each of which is arc-shaped. The plurality of limiting grooves 213 are grouped into two to form a rotation limiting assembly.

[0064] Specifically, the two limiting grooves 213 in the rotation limiting assembly are diagonally symmetrically distributed around the movable groove 202, with the limiting grooves 213 and the movable groove 202 sharing the same center. The rotation limiting assembly further includes a limiting rod 214 slidably connected to the two limiting grooves 213, and the limiting rod 214 is mounted on the limiting block 204 corresponding to the rotation limiting assembly.

[0065] When the movable rod 203 is driven to rotate, the limiting rod 214 rotates synchronously, thereby rotating ninety degrees in the limiting groove 213, so that the groove 210 and the protrusion 211 form a cross shape, so that the groove 210 and the protrusion 211 abut against each other, locking and fixing the movable rod 203.

[0066] When the movable rod 203 is in a fixed state, by driving the second telescopic member 110 to perform telescopic movement, the second movable frame 111 is controlled to move up and down, thereby driving the movable rod 203 in the locked state to move, so that the limit block 204 squeezes the third spring 212, and the test column 205 passes through the through slot to control the test block 207 to perform local pressure resistance testing on the lithium battery.

[0067] according to Figure 11 、 Figure 12 and Figure 13 As shown, a support plate 215 is installed on the second movable frame 111, and a third movable frame 216 is slidably connected to the support plate 215. The third movable frame 216 is connected to a first shaft sleeve 217 by a bearing, and a spline shaft 218 is slidably connected in the first shaft sleeve 217. The spline shaft 218 is connected to the second movable frame 111 by a bearing. A first rack plate 219 is symmetrically provided on the third movable frame 216, and a gear column 220 is provided on the side away from the first rack plate 219. The gear column 220 is located outside the movable rod 203, and the gear column 220 is fixedly connected to the limit rod 214.

[0068] It should be noted that when the first rack plate 219 is meshed with the gear column 220, the first rack plate 219 is controlled to move outside the gear column 220, so that the gear column 220 can be driven to rotate, thereby controlling the movable rod 203 to rotate, so that the limit rod 214 rotates ninety degrees in the limit groove 213, thereby limiting and fixing the test column 205 corresponding to the local position to be detected, making it convenient to drive the second telescopic member 110 to perform telescopic movement, and control the second movable frame 111 to move up and down, thereby driving a group of test columns 205 corresponding to the local position to be detected to move, and perform local pressure resistance testing on the lithium battery.

[0069] Specifically, a movable cavity is defined within the third movable frame 216, and a second sleeve 221 is connected to a bearing within the movable cavity. The second sleeve 221 is slidably connected to the spline shaft 218. A cam 222 is mounted on the second sleeve 221. Arc blocks 223 are mounted on the sides of the second rack plate 230 that are adjacent to each other, and the arc blocks 223 are in contact with the cam 222. A third telescopic member 229 is mounted on the second movable frame 111, and a second rack plate 230 is mounted at the telescopic end of the third telescopic member 229. A transmission gear 231 is meshed and connected to the second rack plate 230, and the transmission gear 231 is fixedly connected to the spline shaft 218. The third telescopic member 229 can be a linear drive component such as a hydraulic cylinder or an electric push rod.

[0070] When the third telescopic member 229 is driven to perform telescopic movement, the second rack plate 230 moves synchronously. The second rack plate 230 is engaged with the transmission gear 231 to drive the spline shaft 218 to rotate, thereby driving the cam 222 to rotate, and squeezing the arc blocks 223 on one group of second rack plates 230, so that the second rack plate 230 connected to the group of arc blocks 223 is engaged with the transmission gear 231 to drive one group of test columns 205 to move up and down in the through groove, so as to facilitate local pressure resistance testing of the lithium battery.

[0071] according to Figure 12 As shown, the side of the third movable frame 216 close to the second rack plate 230 is slidably connected to multiple groups of second guide rods 224, and the end of the second guide rod 224 away from the third movable frame 216 is fixedly connected to the second rack plate 230, and the movement of the second rack plate 230 is limited by the second guide rod 224, so that it is convenient for the cam 222 to eject the second rack plate 230, and a fourth spring 225 is provided on the second guide rod 224. The two ends of the fourth spring 225 are respectively fixedly connected to the third movable frame 216 and the second rack plate 230. Through the setting of the fourth spring 225, when the cam 222 releases the squeezing of the second rack plate 230, the second rack plate 230 is reset, thereby releasing the meshing connection with the transmission gear 231.

[0072] according to Figure 9 As shown, a rotary drive member 226 is mounted on the second movable frame 111, and a screw 227 is mounted on the output shaft of the rotary drive member 226. The screw 227 is rotatably connected to the second movable frame 111 via a bearing. A screw sleeve 228 is threadedly connected to the screw 227, and the screw sleeve 228 is fixedly connected to the third movable frame 216. The rotary drive member 226 can be a rotary drive component such as a motor.

[0073] It should be noted that when the rotary drive member 226 is controlled to operate, the rotary drive member 226 controls the screw 227 to rotate, and through the threaded connection between the screw 227 and the screw sleeve 228, the third movable frame 216 is driven to move on the support plate 215, thereby facilitating the movement of the first rack plate 219 to a position corresponding to the local pressure resistance detection area. At the same time, by controlling the third telescopic member 229 to perform telescopic movement, the second rack plate 230 and the transmission gear 231 are controlled to engage, and the cam 222 is driven to rotate, so that the cam 222 squeezes the arc block 223, thereby facilitating the movement of one set of the first rack plates 219 and engaging with the transmission gear 231.

[0074] When the first rack plate 219 is meshed with the gear column 220, the movable rod 203 is driven to rotate. When the movable rod 203 is driven to rotate, the limiting rod 214 rotates synchronously, thereby rotating ninety degrees in the limiting groove 213, so that the groove 210 and the protrusion 211 form a cross shape, so that the groove 210 and the protrusion 211 abut against each other, thereby locking and fixing the movable rod 203.

[0075] When the movable rod 203 is in a fixed state, by driving the second telescopic member 110 to perform telescopic movement, the second movable frame 111 is controlled to move up and down, thereby driving the movable rod 203 in the locked state to move, so that the limit block 204 squeezes the third spring 212, and the test column 205 passes through the through slot to control the test block 207 to perform local pressure resistance testing on the lithium battery.

[0076] Example 2: According to Figures 1 to 13 As shown, a method for compressive testing of a lithium battery for a communication base station is provided, using a compressive testing device for a lithium battery for a communication base station disclosed in Example 1, and includes the following steps:

[0077] S1. Place the lithium battery to be tested on the cabinet 101 and prepare for compression testing;

[0078] S2. Control the first telescopic member 104 to perform telescopic movement, and the compression test plate 109 controls the contact plate 1091 to perform an overall compression test on the lithium battery to obtain overall compression data of the lithium battery;

[0079] S3. When performing the overall compression test, the cover film 1095 protects the compression test plate 109 and the contact plate 1091 to prevent corrosion of the compression test plate 109 and the contact plate 1091.

[0080] S4. Control the second telescopic member 110 to perform telescopic movement, and the test block 207 performs a local compressive test on the lithium battery, including the corners and local areas on the plane of the lithium battery, to obtain local compressive data of the lithium battery.

[0081] S5. When performing local compressive strength data testing, the local covering area 1097 of the covering film 1095 protects the test block 207 to prevent corrosion of the test block 207.

[0082] S6. After the overall compression test and the local compression test are completed, the tested lithium battery is disassembled.

[0083] The above describes an embodiment of this specific implementation method, but this embodiment is not limited to the above specific implementation method. The above specific implementation method is merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A lithium battery compression test device for a communication base station, characterized in that: include: A test device body (100), the test device body (100) comprising a cabinet (101), and a first bearing platform (102) and a second bearing platform (107) are provided on the cabinet (101), a compression test plate (109) is provided on a side of the second bearing platform (107) close to the cabinet (101), a second telescopic member (110) is installed on the second bearing platform (107), and a second movable frame (111) is installed at the telescopic end of the second telescopic member (110); A local test unit (200) is arranged on the second movable frame (111), the local test unit (200) comprises a carrier (201), the carrier (201) is mounted on the second movable frame (111), a plurality of movable slots (202) are provided on the carrier (201), and a movable rod (203) is slidably connected in the movable slot (202), a limit block (204) is mounted on the movable rod (203), and a test column (205) is mounted on one end of the limit block (204) away from the movable rod (203), a test head (206) is mounted on one end of the test column (205) away from the limit block (204), a third spring (212) is provided on the test column (205), and the test head (206) is used to perform a pressure test on the lithium battery, thereby facilitating pressure testing of the corner positions and local areas on the plane position of the lithium battery to obtain local pressure data of the lithium battery.

2. The lithium battery compression test equipment for a communication base station according to claim 1, characterized in that: A contact plate (1091) is provided on a side of the pressure test plate (109) close to the cabinet (101), and a first pressure detection sensor (1092) is installed on the contact plate (1091); a plurality of first guide rods (1093) are slidably connected to the pressure test plate (109), and the first guide rods (1093) and the contact plate (1091) are fixedly connected; a first spring (1094) is provided on the first guide rod (1093), and two ends of the first spring (1094) are fixedly connected to the pressure test plate (109) and the contact plate (1091), respectively.

3. The lithium battery compression test equipment for a communication base station according to claim 1, characterized in that: A detection slot is provided in the test head (206), a test block (207) is slidably connected in the detection slot, a touch rod is mounted on the test block (207), and a second spring (208) is provided on the touch rod, a second pressure detection sensor (209) is mounted in the detection slot, and the second pressure detection sensor (209) is aligned with the position of the touch rod.

4. The lithium battery compression test equipment for a communication base station according to claim 1, characterized in that: The movable groove (202) is symmetrically provided with grooves (210), and the movable rod (203) is symmetrically provided with protrusions (211). The positional relationship between the grooves (210) and the protrusions (211) exists in two states, one being an initial state and the other being a locked state.

5. The lithium battery compression test equipment for a communication base station according to claim 1, characterized in that: A support plate (215) is installed on the second movable frame (111), and a third movable frame (216) is slidably connected to the support plate (215). A first shaft sleeve (217) is connected to a bearing in the third movable frame (216), and a spline shaft (218) is slidably connected to the first shaft sleeve (217). The spline shaft (218) is connected to the second movable frame (111) by a bearing. A first rack plate (219) is symmetrically provided on the third movable frame (216), and a gear column (220) is provided on a side away from the first rack plate (219). The gear column (220) is located outside the movable rod (203), and the gear column (220) is fixedly connected to the limit rod (214).

6. The lithium battery compression test equipment for a communication base station according to claim 5, characterized in that: A movable cavity is provided in the third movable frame (216), and a bearing in the movable cavity is connected to a second shaft sleeve (221), the second shaft sleeve (221) is slidably connected to the spline shaft (218), a cam (222) is installed on the second shaft sleeve (221), a third telescopic member (229) is installed on the second movable frame (111), and a second rack plate (230) is installed on the telescopic end of the third telescopic member (229), an arc block (223) is installed on the adjacent side of the second rack plate (230), and the arc block (223) is in contact with the cam (222), a transmission gear (231) is meshed and connected to the second rack plate (230), and the transmission gear (231) is fixedly connected to the spline shaft (218).

7. The lithium battery compression test equipment for a communication base station according to claim 6, characterized in that: The third movable frame (216) is slidably connected to a plurality of second guide rods (224) on one side close to the second rack plate (230), and one end of the second guide rod (224) away from the third movable frame (216) is fixedly connected to the second rack plate (230), and a fourth spring (225) is provided on the second guide rod (224).

8. The lithium battery compression test equipment for a communication base station according to claim 7, characterized in that: A rotary drive member (226) is installed on the second movable frame (111), and a screw (227) is installed on the output shaft of the rotary drive member (226). The screw (227) is rotatably connected to the second movable frame (111) via a bearing. A screw sleeve (228) is threadedly connected to the screw (227), and the screw sleeve (228) is fixedly connected to the third movable frame (216).

9. The lithium battery compression test equipment for a communication base station according to claim 2, characterized in that: A covering film (1095) is provided on the side of the contact plate (1091) away from the compression test plate (109), a plurality of local covering areas (1097) are provided on the covering film (1095), and a telescopic area (1098) is provided between the local covering areas (1097) and the covering film (1095).

10. A method for compressive testing of lithium batteries for communication base stations, using a compressive testing device for lithium batteries for communication base stations according to any one of claims 1 to 9, characterized in that: The steps include: S1, placing the lithium battery to be tested on the cabinet (101) and preparing for compression testing; S2, controlling the first telescopic member (104) to perform telescopic movement, and the compression test plate (109) controlling the contact plate (1091) to perform an overall compression test on the lithium battery to obtain overall compression data of the lithium battery; S3. When performing overall compression data testing, the covering film (1095) protects the compression test plate (109) and the contact plate (1091) to prevent corrosion of the compression test plate (109) and the contact plate (1091); S4, controlling the second telescopic member (110) to perform telescopic movement, and the test block (207) performs a local compressive test on the lithium battery, and performs a compressive test on the corners and local areas of the lithium battery on a plane, to obtain local compressive data of the lithium battery; S5. When performing local compressive strength data testing, the local covering area (1097) of the covering film (1095) protects the test block (207) to prevent the test block (207) from being corroded; S6. After the overall compression test and the local compression test are completed, the tested lithium battery is disassembled.

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