A kind of communication base station lithium battery compression test equipment and method

Abstract

The application relates to the technical field of compression resistance test equipment, and discloses a lithium battery compression resistance test equipment and method for a communication base station. The lithium battery compression resistance test equipment comprises a test equipment main body; a local test unit, the local test unit comprises a bearing frame and a test column, a test head is arranged at the end of the test column away from a limiting block, the test head is used for carrying out compression resistance test on a lithium battery, so that the compression resistance of the edge corner position and the local area on the plane position of the lithium battery can be detected, and the local compression resistance data of the lithium battery can be obtained. The local test unit can accurately act on weak positions such as edges and corners, the test block, the contact rod and the second pressure detection sensor are cooperated, the force difference of different positions is effectively buffered, and the technical problem that the compression resistance capacity of different positions of the lithium battery is significantly different and then influences the structural stability of the whole battery is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compression test equipment, more particularly, it relates to a lithium battery compression test equipment and method for communication base station. BACKGROUND

[0002] The lithium battery for communication base station is a crucial energy storage component in the communication field, which contains positive electrode, negative electrode, electrolyte and separator. The lithium ion reversibly shuttles between the positive and negative electrodes to realize charging and discharging. In the actual use scenario of the base station, the battery may face various external extrusion conditions, such as extrusion of surrounding components during installation, collision and extrusion during transportation, etc. In addition, if the battery has insufficient compression resistance, the internal structure may be damaged after being pressed, which may cause safety hazards such as short circuit and electrolyte leakage, and even lead to serious consequences such as fire and explosion.

[0003] In the prior art, the compression test equipment has an adjustable pressure applying device, which can accurately control and gradually increase the pressure on the lithium battery, simulate the extrusion conditions that the battery may encounter in actual use, transportation and storage, and is equipped with a high-precision pressure sensor and a data recording module to monitor and record the pressure value and the corresponding changes of the battery in real time, so as to determine whether the lithium battery will appear structural damage, performance degradation and other conditions under different pressures.

[0004] Most of the existing lithium battery compression test devices and methods focus on the compression test of the whole battery. The pressure is applied to the whole lithium battery, and the structural integrity and performance change of the whole battery under the pressure are monitored to evaluate the compression resistance. However, the compression resistance of different parts of the lithium battery is significantly different. For example, the corner parts of the battery, due to their special structure and shape, have more obvious stress concentration phenomenon when extruded by external force, and are more likely to deform, break and other conditions compared with the flat center area of the battery, which affects the structural stability of the whole battery. SUMMARY

[0005] The present application provides a lithium battery compression test equipment and method for communication base station, which solves the technical problem that the compression resistance of different parts of the lithium battery is significantly different in related technology, and the corner parts of the battery are more likely to deform, break and other conditions compared with the flat center area of the battery, which affects the structural stability of the whole battery.

[0006] The first aspect of the present application discloses a lithium battery compression test equipment for communication base station, comprising a test equipment main body, the test equipment main body comprises a cabinet, and a first bearing table and a second bearing table are arranged on the cabinet, a compression test plate is arranged on the side close to the cabinet of the second bearing table, a second telescopic piece is installed on the second bearing table, and a second movable frame is installed on the telescopic end of the second telescopic piece.

[0007] The local test unit is arranged on the second movable frame, and the local test unit comprises a bearing frame which is mounted on the second movable frame, a plurality of groups of movable grooves are formed in the bearing frame, movable rods are slidably connected in the movable grooves, limit blocks are mounted on the movable rods, test columns are mounted on the ends of the limit blocks away from the movable rods, test heads are mounted on the ends of the test columns away from the limit blocks, third springs are arranged on the test columns, and the test heads are used for compression resistance test of the lithium battery, so that the compression resistance of the local area on the corner position and the planar position of the lithium battery can be detected, and the local compression resistance data of the lithium battery can be obtained.

[0008] As a further optimization scheme of the present application, the anti-pressure test plate is provided with a contact plate on one side close to the cabinet, and a first pressure detection sensor is mounted on the contact plate; a plurality of groups of first guide rods are slidably connected on the anti-pressure test plate, and the first guide rods are fixedly connected with the contact plate; the first guide rods are provided with first springs, and the two ends of the first springs are fixedly connected with the anti-pressure test plate and the contact plate respectively.

[0009] As a further optimization scheme of the present application, a detection groove is formed in the test head, a test block is slidably connected in the detection groove, a touch rod is mounted on the test block, a second spring is arranged on the touch rod, and a second pressure detection sensor is mounted in the detection groove and aligned with the touch rod.

[0010] As a further optimization scheme of the present application, grooves are symmetrically formed in the movable grooves, and protrusions are symmetrically mounted on the movable rods; the positional relationship between the grooves and the protrusions has two states, one of which is an initial state, and the other of which is a locking state; in the initial state, the grooves and the protrusions are one-to-one corresponding in position, and when the movable grooves move outside the movable rods, the protrusions are slidably connected in the grooves; in the locking state, the grooves and the protrusions are coaxial with the center of the movable rods as the axis, the protrusions are rotated by ninety degrees, so that the grooves and the protrusions abut against each other, and the movable rods are locked and fixed.

[0011] As a further optimization scheme of the present application, a supporting plate is mounted on the second movable frame, a third movable frame is slidably connected on the supporting plate, a first shaft sleeve is bearing-connected in the third movable frame, a spline shaft is slidably connected in the first shaft sleeve, the spline shaft is bearing-connected on the second movable frame, first rack plates are symmetrically arranged on the third movable frame, gear columns are arranged on the sides away from the first rack plates, the gear columns are located outside the movable rods, and the gear columns are fixedly connected with the limit rods.

[0012] As a further optimization scheme of the present application, the third movable frame is provided with a movable cavity, and a second shaft sleeve is connected to the movable cavity through a bearing, the second shaft sleeve is slidably connected to the spline shaft, a cam is installed on the second shaft sleeve, and an arc-shaped block is installed on the side of the second rack plate close to the second rack plate, and the arc-shaped block is in contact with the cam, a third telescopic member is installed on the second movable frame, and a second rack plate is installed on the telescopic end of the third telescopic member, and a transmission gear is engagedly connected to the second rack plate and fixedly connected to the spline shaft.

[0013] As a further optimization scheme of the present application, the third movable frame is provided with a movable cavity, and a second shaft sleeve is connected to the movable cavity through a bearing, the second shaft sleeve is slidably connected to the spline shaft, a cam is installed on the second shaft sleeve, and an arc-shaped block is installed on the side of the second rack plate close to the second rack plate, and the arc-shaped block is in contact with the cam, a third telescopic member is installed on the second movable frame, and a second rack plate is installed on the telescopic end of the third telescopic member, and a transmission gear is engagedly connected to the second rack plate and fixedly connected to the spline shaft.

[0014] As a further optimization scheme of the present application, a rotary driving member is installed on the second movable frame, a screw rod is installed on the output shaft of the rotary driving member, the screw rod is rotatably connected to the second movable frame through a bearing, a screw sleeve is threadedly connected to the screw rod, and the screw sleeve is fixedly connected to the third movable frame.

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

[0016] The second aspect of the present application discloses a lithium battery compression test method for a communication base station, which uses a lithium battery compression test device for a communication base station as described above, and includes the following steps:

[0017] S1, placing the lithium battery to be tested on the cabinet, and preparing for compression detection;

[0018] S2, controlling the first telescopic member to perform telescopic movement, and controlling the compression test plate to perform overall compression detection on the lithium battery through the contact plate, so as to obtain overall compression data of the lithium battery;

[0019] S3, when the overall compression data is detected, the covering film protects the compression test plate and the contact plate to avoid corrosion of the compression test plate and the contact plate;

[0020] S4, controlling the second telescopic member to perform telescopic movement, and performing local compression detection on the lithium battery through the test block, so as to obtain local compression data of the lithium battery;

[0021] S5, when the local compression data is detected, the local covering area of the covering film protects the test block to avoid corrosion of the test block;

[0022] S6, after the overall compression resistance detection and the local compression resistance detection are completed, the lithium battery after the detection is disassembled.

[0023] The application has the beneficial effects that: the local test unit is adopted to accurately act on the weak parts such as the corners, the force is easily concentrated due to the special structure of the corners, the local detection can accurately measure the pressure and the deformation amount, the test block, the touch rod and the second pressure detection sensor are cooperated to effectively buffer the force difference of different positions, the pressure is uniformly and stably transmitted to the second pressure detection sensor, the data error caused by the local unevenness is avoided, the detection result is accurate and reliable, and the technical problem that the pressure bearing capacity of different parts of the lithium battery is significantly different is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

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

[0025] Figure 2 is a local three-dimensional structure schematic diagram of the application;

[0026] Figure 3 is a three-dimensional structure schematic diagram of the application; Figure 2 is a local three-dimensional structure schematic diagram of the application;

[0027] Figure 4 is a three-dimensional structure schematic diagram of the application;

[0028] Figure 5 is a three-dimensional structure schematic diagram of the application;

[0029] Figure 6 is a three-dimensional structure schematic diagram of the application;

[0030] Figure 7 is a three-dimensional structure schematic diagram of the application;

[0031] Figure 8 is a three-dimensional structure schematic diagram of the application;

[0032] Figure 9 is a three-dimensional structure schematic diagram of the application;

[0033] Figure 10 is a three-dimensional structure schematic diagram of the application;

[0034] Figure 11 is a three-dimensional structure schematic diagram of the application;

[0035] Figure 12 Figure 1 is a schematic diagram of the connecting relationship structure of the cam and the arc-shaped block according to the present application;

[0036] Figure 13 Figure 2 is a schematic diagram of the three-dimensional structure of the cam according to the present application.

[0037] In the figure: 100, test equipment main body; 101, cabinet; 102, first bearing table; 103, stand; 104, first telescopic part; 105, first movable frame; 106, guide column; 107, second bearing table; 108, support; 109, compression resistance 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 part; 111, second movable frame; 112, controller;

[0038] 200, partial test unit; 201, bearing frame; 202, movable slot; 203, movable rod; 204, limiting block; 205, test column; 206, test head; 207, test block; 208, second spring; 209, second pressure detection sensor; 210, groove; 211, protruding block; 212, third spring; 213, limiting slot; 214, limiting rod; 215, supporting 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-shaped block; 224, second guide rod; 225, fourth spring; 226, rotary driving part; 227, screw rod; 228, screw sleeve; 229, third telescopic part; 230, second rack plate; 231, transmission gear. DETAILED DESCRIPTION

[0039] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that discussions of these implementations are merely provided for the purposes of enabling better understanding of the subject matter and can be changed in the functional and arrange- ments of the elements without departing from the scope of the present description. Various processes or components can be omitted, substituted, or added according to desired implementations. Additionally, features described with respect to some examples can be combined in other examples.

[0040] According to Figure 1 , Figure 2 and Figure 3As shown in the figure, a kind of communication base station lithium battery compression test equipment, including test equipment main body 100, test equipment main body 100 includes cabinet 101, and first bearing table 102 is equipped on cabinet 101, and multiple groups of stand column 103 are equipped between cabinet 101 and first bearing table 102, and stand column 103 is fixedly connected with cabinet 101 and first bearing table 102.Specifically, first bearing table 102 is installed with first telescopic piece 104, and the telescopic end of first telescopic piece 104 is installed with first movable frame 105 through first bearing table 102, multiple groups of guide column 106 are slidably connected in first movable frame 105, and guide column 106 is fixedly connected with cabinet 101 and first bearing table 102.

[0041] And, second bearing table 107 is installed on first movable frame 105, and compression test plate 109 is equipped on the side of second bearing table 107 close to cabinet 101, when the compression performance of lithium battery is tested, control first telescopic piece 104 to carry out telescopic motion, with the telescopic motion of first telescopic piece 104, the first movable frame 105 connected therewith moves synchronously, to drive second bearing table 107 to move in the direction of up and down along the setting track of first telescopic piece 104, so that compression test plate 109 carries out extrusion detection to lithium battery.

[0042] In addition, bracket 108 is installed between second bearing table 107 and compression test plate 109.

[0043] According to Figures 3 to 6 As shown, the side of compression test plate 109 close to cabinet 101 is equipped with contact plate 1091, and first pressure detection sensor 1092 is installed on contact plate 1091, multiple groups of first guide rod 1093 are slidably connected on compression test plate 109, and first guide rod 1093 is fixedly connected between contact plate 1091, first spring 1094 is equipped on first guide rod 1093, and the two ends of first spring 1094 are fixedly connected with compression test plate 109 and contact plate 1091 respectively.

[0044] It needs to be understood that when extrusion detection is carried out to lithium battery, compression test plate 109 will exert gradually increasing extrusion force on lithium battery, by carrying out compression detection to lithium battery, using first pressure detection sensor 1092, data acquisition and analysis system, the deformation condition of lithium battery under different pressure, internal structure stability and other aspects of compression performance index are comprehensively tested, so as to accurately evaluate whether the lithium battery can meet various pressure scenarios that may be faced in actual application scenarios, provide key and reliable data support for quality control and subsequent optimization and improvement of lithium battery, so as to test the compression performance of lithium battery.

[0045] It should be noted that the first pressure detection sensor 1092 can obtain the pressure applied by the compression test plate 109 to the lithium battery in real time and accurately. After the detection starts, as the compression test plate 109 gradually extrudes the lithium battery, the first pressure detection sensor 1092 converts the pressure change into an electrical signal. Through the data recorded by the first pressure detection sensor 1092, the maximum pressure that the lithium battery can withstand, i.e., the compression limit, can be clearly determined.

[0046] Further, according to Figures 1 to 4 As shown in FIG. 11, the second bearing table 107 is provided with a second telescopic member 110, and the telescopic end of the second telescopic member 110 is provided with a second movable frame 111, and the second movable frame 111 is provided with a local test unit 200. Specifically, in the actual use scene of the lithium battery, the compression resistance of different parts is different, and some local areas are relatively weak, such as the corner parts of the battery. Due to the special structure shape, the stress concentration phenomenon is more obvious when the corner is extruded by external force, and the deformation, damage, etc. are more likely to occur compared with the planar central region of the battery. The local test unit 200 can accurately apply a pressure probe to these corner parts, and accurately measure the pressure and deformation amount of the local part through a sensor, so as to understand the specific compression resistance performance of these weak parts.

[0047] Among them, the first telescopic member 104 and the second telescopic member 110 can be linear driving components such as hydraulic cylinders and electric push rods, and the cabinet 101 is also provided with a controller 112 for controlling the compression test of the lithium battery. Through the data acquisition and analysis system in the controller 112, the deformation of the lithium battery under different pressures, the internal structure stability and other compression resistance performance indicators are comprehensively tested.

[0048] According to Figure 5 and Figure 7 As shown in FIG. 11, the second bearing table 107 is provided with a second telescopic member 110, and the telescopic end of the second telescopic member 110 is provided with a second movable frame 111, and the second movable frame 111 is provided with a local test unit 200. Specifically, in the actual use scene of the lithium battery, the compression resistance of different parts is different, and some local areas are relatively weak, such as the corner parts of the battery. Due to the special structure shape, the stress concentration phenomenon is more obvious when the corner is extruded by external force, and the deformation, damage, etc. are more likely to occur compared with the planar central region of the battery. The local test unit 200 can accurately apply a pressure probe to these corner parts, and accurately measure the pressure and deformation amount of the local part through a sensor, so as to understand the specific compression resistance performance of these weak parts.

[0049] It should be noted that the anti-pressure test plate 109 is provided with a plurality of through grooves for the test head 206 to pass through. When the local anti-pressure test of the lithium battery is performed, a certain group of test columns 205 is controlled to move individually, so that the test head 206 in this group can pass through the through groove and detect the local pressure of the lithium battery through the test head 206.

[0050] The test head 206 is provided with a detection groove, and the test block 207 is slidably connected in the detection groove. During the pressing process, the reaction force borne by the test block 207 is monitored in real time by the second pressure detection sensor 209 built in the detection groove. The second pressure detection sensor 209 can accurately perceive the slight change in pressure and timely feedback the pressure value and related data to the controller 112. The controller 112 collects, analyzes and records these data, so as to comprehensively and accurately evaluate the anti-pressure performance of the lithium battery at the local position in the subsequent process.

[0051] Specifically, the test block 207 is provided with a touch rod, and the touch rod is provided with the second spring 208. The two ends of the second spring 208 are fixedly connected with the test head 206 and the detection groove respectively. The second pressure detection sensor 209 is installed in the detection groove and aligned with the position of the touch rod. In this embodiment, when the test block 207 detects the anti-pressure of the lithium battery, the pressure can be more uniformly and accurately transmitted to the second pressure detection sensor 209 through the setting of the touch rod.

[0052] That is to say, when the local anti-pressure of the lithium battery is detected, the stress conditions of 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 the pressures to the second pressure detection sensor 209 in a relatively consistent and stable manner, thereby avoiding the problem that the detection data of the sensor is greatly deviated due to the uneven local pressure, and greatly improving the accuracy of the detection data.

[0053] Meanwhile, the test block 207 and the touch rod cooperate with each other to block the second pressure detection sensor 209 from the lithium battery, so as to protect the second pressure detection sensor 209 from being damaged when the lithium battery is detected.

[0054] According to Figure 6As shown, the contact plate 1091 is provided with a covering film 1095 on the side away from the compression test plate 109. The covering film 1095 is used to protect the contact plate 1091 and the test block 207 by covering the outside of the contact plate 1091. When the lithium battery bulges or deforms due to internal pressure changes, abnormal chemical reactions, etc. during the compression test, the surface morphology is no longer regular and flat. At this time, if the pressure test continues, the bulging and deformed parts may abnormally extrude and rub against the test head 206, which can easily scratch the test head 206 or cause the test head 206 to be subjected to uneven impact force.

[0055] If the shell of the lithium battery breaks under compression test, the internal electrolyte and other substances may leak out. The lithium battery electrolyte has certain corrosive properties and can corrode the metal material of the test head 206 once it comes into contact with the test head 206, causing the test head 206 to become uneven and leading to uneven force application during subsequent compression testing of the lithium battery. In the present embodiment, the covering film 1095 is provided to cover and effectively isolate the contact plate 1091 and the test block 207, thereby protecting the contact plate 1091 and the test block 207 from corrosion by the electrolyte or penetration of the electrolyte onto the first pressure detection sensor 1092 and the second pressure detection sensor 209.

[0056] Specifically, the covering film 1095 is provided with buckles 1096 at both ends, and the buckles 1096 are arranged in an arc-shaped structure. The compression test plate 109 is provided with a clamping groove on the side corresponding to the buckles 1096, and the clamping groove is connected with the buckles 1096. When the covering film 1095 is assembled, the buckles 1096 are inserted into the clamping groove to fix the covering film 1095, thereby effectively isolating the contact plate 1091 and the test block 207.

[0057] Further, the covering film 1095 is provided with a plurality of local covering areas 1097, and the local covering areas 1097 correspond one-to-one to the positions of the test block 207, thereby facilitating the shielding of the test block 207. The local covering areas 1097 and the covering film 1095 are provided with a stretchable area 1098, which realizes the stretching function through regular or relatively irregular wrinkles. When not stretched by external force, the stretchable area 1098 is in a natural folded state.

[0058] When it is necessary to stretch the local covering area 1097 on the covering film 1095, the wrinkles are gradually stretched and flattened, increasing the length or area of the area, achieving the effect of stretching. After the external force disappears, the wrinkles can restore to the original state by the resilience of the material itself. Through the setting of the stretching area 1098, when the lithium battery is subjected to local compression test, the test head 206 can be elastically stretched through the covering film 1095, achieving the protection of the test head 206. Among them, the elastic pull rope can be pre-embedded in the wrinkle area, thereby assisting the stretching area 1098 to reset.

[0059] According to Figure 8 、 Figure 9 and Figure 10 , the recess 210 is symmetrically provided on the movable slot 202, and the protrusion 211 is symmetrically installed on the movable rod 203. The positional relationship between the recess 210 and the protrusion 211 has two states, one of which is the initial state, and the other of which is the locking state.

[0060] In the initial state, the positions of the recess 210 and the protrusion 211 correspond one by one. When the movable slot 202 moves outside the movable rod 203, the protrusion 211 slides in the recess 210.

[0061] In the locking state, the positions of the recess 210 and the protrusion 211 are taken as the axis of the center of the movable rod 203, and the protrusion 211 is rotated by ninety degrees, so that the recess 210 and the protrusion 211 form a cross shape, and the recess 210 and the protrusion 211 are in abutment, locking and fixing the movable rod 203.

[0062] Among them, the third spring 212 is provided on the test column 205, and the two ends of the third spring 212 are in contact with the compression test plate 109 and the limiting block 204, respectively. The third spring 212 is used to elastically support the test column 205, so that the third spring 212 is in a default expanded state, supporting and limiting the test column 205, so that the test head 206 is located in the through slot in the normal state.

[0063] Further, the carrying frame 201 is provided with a plurality of limiting grooves 213, and each limiting groove 213 is arc-shaped. Among them, the plurality of limiting grooves 213 are arranged in a rotating limiting assembly in groups of two.

[0064] Specifically, the two limiting grooves 213 in the rotating limiting assembly are diagonally and symmetrically distributed around the movable slot 202 with the movable slot 202 as the center, and the limiting groove 213 and the movable slot 202 have the same center. Among them, the rotating limiting assembly also includes a limiting rod 214 slidingly connected in the two limiting grooves 213, and the limiting rod 214 is installed on the limiting block 204 corresponding to the rotating limiting assembly.

[0065] When the driving movable rod 203 rotates, the limiting rod 214 rotates synchronously, so as to rotate 90 degrees in the limiting groove 213, so that the recess 210 and the protrusion 211 form a cross shape, so that the recess 210 and the protrusion 211 abut, and the movable rod 203 is locked and fixed.

[0066] When the movable rod 203 is in a fixed state, the second telescopic piece 110 is driven to perform telescopic movement, the second movable frame 111 is controlled to move up and down, so as to drive the movable rod 203 in the locked state to move, so that the limiting block 204 extrudes the third spring 212, and the test column 205 passes through the through slot to control the test block 207 to locally detect the pressure resistance of the lithium battery.

[0067] According to Figure 11 , Figure 12 and Figure 13 , the second movable frame 111 is provided with a supporting plate 215, the supporting plate 215 is slidably connected with a third movable frame 216, the third movable frame 216 is bearing-connected with a first shaft sleeve 217, the first shaft sleeve 217 is slidably connected with a spline shaft 218, the spline shaft 218 is bearing-connected to the second movable frame 111, the third movable frame 216 is symmetrically provided with a first rack plate 219, and the far side of the first rack plate 219 is provided with a gear column 220, the gear column 220 is located outside the movable rod 203, and the gear column 220 is fixedly connected with the limiting rod 214.

[0068] It should be noted that when the first rack plate 219 is engaged with the gear column 220, the first rack plate 219 is controlled to move outside the gear column 220, that is, the gear column 220 is driven to rotate, so as to control the movable rod 203 to rotate, so that the limiting rod 214 rotates 90 degrees in the limiting groove 213, so as to limit and fix the test column 205 corresponding to the local position to be detected, so as to drive the second telescopic piece 110 to perform telescopic movement, control the second movable frame 111 to move up and down, so as to drive a group of test columns 205 corresponding to the local position to be detected to move, and locally detect the pressure resistance of the lithium battery.

[0069] Specifically, the third movable frame 216 is provided with a movable cavity, and a second shaft sleeve 221 is connected to the movable cavity through a bearing. The second shaft sleeve 221 is slidingly connected to the spline shaft 218. A cam 222 is installed on the second shaft sleeve 221. Arc-shaped blocks 223 are installed on the side of the second rack plate 230 close to each other, and the arc-shaped blocks 223 are in contact with the cam 222. A third telescopic member 229 is installed on the second movable frame 111, and the second rack plate 230 is installed on the telescopic end of the third telescopic member 229. The second rack plate 230 is meshingly connected with a transmission gear 231, and the transmission gear 231 is fixedly connected with the spline shaft 218. The third telescopic member 229 can be a hydraulic cylinder, an electric push rod or other linear driving components.

[0070] When the third telescopic member 229 is driven to perform telescopic movement, the second rack plate 230 performs synchronous movement. Through the meshing connection between the second rack plate 230 and the transmission gear 231, the spline shaft 218 is driven to rotate, thereby driving the cam 222 to rotate. The arc-shaped blocks 223 on one of the second rack plates 230 are extruded, so that the second rack plate 230 connected with the arc-shaped blocks 223 is meshingly connected with the transmission gear 231, so as to drive one of the test columns 205 to move up and down in the through slot, thereby facilitating the local compression resistance detection of the lithium battery.

[0071] According to Figure 12 As shown in the figure, a plurality of second guide rods 224 are slidingly connected to the side of the third movable frame 216 close to the second rack plate 230, and the second guide rods 224 are fixedly connected to the second rack plate 230 away from the third movable frame 216. The movement of the second rack plate 230 is limited through the second guide rod 224, so as to facilitate the ejection of the cam 222 to the second rack plate 230. The fourth spring 225 is provided on the second guide rod 224, and the two ends of the fourth spring 225 are fixedly connected with the third movable frame 216 and the second rack plate 230, respectively. Through the arrangement of the fourth spring 225, when the cam 222 releases the extrusion 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 in the figure, a rotary driving member 226 is installed on the second movable frame 111, and a screw rod 227 is installed on the output shaft of the rotary driving member 226. The screw rod 227 is rotatably connected with the second movable frame 111 through a bearing. A screw sleeve 228 is threadedly connected with the screw rod 227, and the screw sleeve 228 is fixedly connected with the third movable frame 216. The rotary driving member 226 can be a motor or other rotary driving components.

[0073] It should be noted that when the rotating driving member 226 is controlled to work, the rotating driving member 226 controls the screw rod 227 to rotate, and through the threaded connection of the screw rod 227 and the screw sleeve 228, the third movable frame 216 is driven to move on the supporting plate 215, so that the first rack plate 219 is moved to a position corresponding to the local compression resistance detection area. At the same time, the third telescopic member 229 is controlled to perform telescopic movement, the second rack plate 230 and the transmission gear 231 are engaged and connected, the cam 222 is driven to rotate, the cam 222 extrudes the arc block 223, so that one group of first rack plates 219 is driven to move and is engaged and connected with the transmission gear 231.

[0074] When the first rack plate 219 is engaged and connected with the gear column 220, the movable rod 203 is driven to rotate, and when the movable rod 203 is driven to rotate, the limiting rod 214 rotates synchronously by 90 degrees in the limiting groove 213, so that the recess 210 and the protrusion 211 form a cross shape, and the recess 210 and the protrusion 211 abut against each other to lock and fix the movable rod 203.

[0075] When the movable rod 203 is in a fixed state, the second telescopic member 110 is driven to perform telescopic movement, the second movable frame 111 is controlled to move up and down, the movable rod 203 in the locked state is driven to move, the limiting block 204 extrudes the third spring 212, the test column 205 passes through the through slot, and the test block 207 controls the test of the lithium battery.

[0076] Embodiment two: according to Figures 1 to 13 As shown in the figure, a communication base station lithium battery compression resistance test method uses the communication base station lithium battery compression resistance test device disclosed in embodiment one, and includes the following steps:

[0077] S1, placing the lithium battery to be tested on the cabinet 101, and preparing for compression resistance detection;

[0078] S2, controlling the first telescopic member 104 to perform telescopic movement, the compression resistance test plate 109 controls the contact plate 1091 to perform overall compression resistance detection on the lithium battery, so as to obtain overall compression resistance data of the lithium battery;

[0079] S3, when the overall compression resistance data detection is performed, the cover film 1095 protects the compression resistance test plate 109 and the contact plate 1091, so as to avoid corrosion of the compression resistance test plate 109 and the contact plate 1091;

[0080] S4, controlling the second telescopic member 110 to perform telescopic movement, the test block 207 performs local compression resistance detection on the lithium battery, and the edge corner position and the local area on the plane position of the lithium battery are detected for compression resistance, so as to obtain local compression resistance data of the lithium battery;

[0081] S5, when the local compression resistance data detection is performed, the local shielding area 1097 of the shielding film 1095 protects the test block 207 to avoid corrosion of the test block 207;

[0082] S6, after the overall compression resistance detection and the local compression resistance detection are completed, the lithium battery after the detection is disassembled.

[0083] The above describes the embodiments of the specific embodiments, but the embodiments are not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the embodiments, which all belong to the protection of the embodiments.

Claims

1. A compression test apparatus for lithium batteries for communication base stations, characterized by, The utility model relates to a lithium battery local compression resistance testing device, which comprises the following: a testing device body (100) comprising a cabinet (101), wherein the cabinet (101) is provided with a first bearing table (102) and a second bearing table (107), the second bearing table (107) is provided with a compression resistance testing plate (109) close to one side of the cabinet (101), a second telescopic part (110) is installed on the second bearing table (107), and a second movable frame (111) is installed at the telescopic end of the second telescopic part (110); a local testing unit (200) is arranged on the second movable frame (111), the local testing unit (200) comprises a bearing frame (201) installed on the second movable frame (111), a plurality of movable grooves (202) are formed in the bearing frame (201), a movable rod (203) is slidably connected in the movable groove (202), a limiting block (204) is installed on the movable rod (203), a testing column (205) is installed at the end of the limiting block (204) away from the movable rod (203), a testing head (206) is installed at the end of the testing column (205) away from the limiting block (204), a third spring (212) is arranged on the testing column (205), and the testing head (206) is used for compression resistance testing of a lithium battery, so that the local area of the edge corner position and the plane position of the lithium battery can be subjected to compression resistance detection, and the local compression resistance data of the lithium battery can be obtained; the movable groove (202) is symmetrically provided with a groove (210), the movable rod (203) is symmetrically provided with a protrusion (211), and the positional relationship between the groove (210) and the protrusion (211) has two states, one is an initial state, and the other is a locking state; the second movable frame (111) is provided with a supporting plate (215), a third movable frame (216) is slidably connected to the supporting plate (215), a first shaft sleeve (217) is connected to the third movable frame (216) in a bearing manner, 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) in a bearing manner, the third movable frame (216) is symmetrically provided with a first rack plate (219), and gear columns (220) are arranged on the sides away from each other of the first rack plate (219), the gear columns (220) are located outside the movable rod (203), and the gear columns (220) are fixedly connected with the limiting rod (214). The third movable frame (216) is provided with a movable cavity, and a second shaft sleeve (221) is connected to the movable cavity through a bearing, 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 piece (229) is installed on the second movable frame (111), and a second rack plate (230) is installed at the telescopic end of the third telescopic piece (229), arc-shaped blocks (223) are installed on the side close to the second rack plate (230), and the arc-shaped blocks (223) are in contact with the cam (222), and a transmission gear (231) is meshingly connected to the second rack plate (230) and fixedly connected to the spline shaft (218); A plurality of second guide rods (224) are slidably connected to the side of the third movable frame (216) close to the second rack plate (230), and the second guide rods (224) are fixedly connected to the second rack plate (230) at the end away from the third movable frame (216), and the second guide rods (224) are provided with fourth springs (225); A rotary driving piece (226) is installed on the second movable frame (111), a screw rod (227) is installed on the output shaft of the rotary driving piece (226), the screw rod (227) is rotatably connected to the second movable frame (111) through a bearing, a screw sleeve (228) is threadedly connected to the screw rod (227), and the screw sleeve (228) is fixedly connected to the third movable frame (216).

2. The anti-pressure test equipment for lithium battery of communication base station according to claim 1, characterized in that, A contact plate (1091) is arranged on the side of the anti-pressure test plate (109) close to the cabinet (101), 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 anti-pressure test plate (109), and the first guide rods (1093) are fixedly connected between the anti-pressure test plate (109) and the contact plate (1091), and first springs (1094) are arranged on the first guide rods (1093), and the two ends of each first spring (1094) are fixedly connected to the anti-pressure test plate (109) and the contact plate (1091) respectively.

3. The anti-pressure test device for lithium battery of communication base station according to claim 1, characterized in that, A detection groove is arranged in the test head (206), a test block (207) is slidably connected in the detection groove, a contact rod is installed on the test block (207), a second spring (208) is arranged on the contact rod, and a second pressure detection sensor (209) is installed in the detection groove and aligned with the contact rod.

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

5. A method for testing the pressure resistance of a lithium battery for a communication base station using the pressure resistance testing device for a lithium battery for a communication base station according to any one of claims 1 to 4, characterized by, The method comprises the following steps: S1, placing the lithium battery to be tested on the cabinet (101) to prepare for the anti-pressure detection; S2, control the first telescopic part (104) to carry out telescopic movement, the anti-pressure test plate (109) controls the contact plate (1091) to carry out overall anti-pressure detection to the lithium battery, to obtain the overall anti-pressure data of the lithium battery; S3, when the overall anti-pressure data detection is carried out, the cover film (1095) protects the anti-pressure test plate (109) and the contact plate (1091), to avoid the anti-pressure test plate (109) and the contact plate (1091) from being corroded; S4, control the second telescopic part (110) to carry out telescopic movement, the test block (207) carries out local anti-pressure detection to the lithium battery, and the edge corner position and the local area on the plane position of the lithium battery are detected, to obtain the local anti-pressure data of the lithium battery; S5, when the local anti-pressure data detection is carried out, the local covering area (1097) of the cover film (1095) protects the test block (207), to avoid the test block (207) from being corroded; S6, after the overall anti-pressure detection and the local anti-pressure detection are completed, the detected lithium battery is disassembled.

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