A lithium battery aging test system that can simulate temperature and humidity

Abstract

The invention discloses a lithium battery aging test system capable of simulating temperature and humidity, and belongs to the technical field of lithium battery aging test. The lithium battery aging test system capable of simulating temperature and humidity comprises a shell component, the shell component comprises a test box, the test box is provided with a temperature control component and a spray component, a lifting component is provided in the test box, the lifting component comprises a threaded support cylinder, a rotating component is provided on the threaded support cylinder, the rotating component comprises a swivel and a mounting frame, the mounting frame is provided with a mounting component, the mounting component comprises a rotating rod and a placing disc, a lithium battery body and a cyclic charging and discharging module are provided on the placing disc, a positioning component is provided on the placing disc, a temperature detection module is provided on the positioning component, a reciprocating moving component and an intermittent rotating component are provided between the threaded support cylinder and the rotating rod, and the system has the advantages of intelligent control, flexible adjustment, rapid and full contact with the detection environment, efficient detection, meeting the requirements of different detection environments, reliable structure, convenient operation, and simple and practical use.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery aging test, and in particular to a lithium battery aging test system capable of simulating temperature and humidity. Background Art

[0002] The main purpose of lithium battery aging testing is to evaluate the performance degradation of lithium batteries under different conditions by simulating actual usage scenarios, including changes in key parameters such as battery capacity, internal resistance and voltage, and to predict the actual service life of the battery.

[0003] Lithium batteries are often placed in working environments with different temperatures and humidity during daily use. In order to better understand the aging of lithium batteries produced under different temperature and humidity environments, most manufacturers conduct sampling tests on the lithium batteries produced. Existing lithium battery aging test devices can only test a single lithium battery at a time. Multiple lithium batteries after sampling need to be tested multiple times, which is inefficient. Moreover, the position of the lithium battery is fixed during the test, and its position and angle cannot be adjusted, which makes it inconvenient for the lithium battery to fully contact the simulated environment, affecting the detection accuracy.

[0004] Therefore, it is necessary to provide a lithium battery aging test system that can simulate temperature and humidity to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of an embodiment of the present invention is to provide a lithium battery aging test system that can simulate temperature and humidity to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lithium battery aging test system capable of simulating temperature and humidity comprises a shell component, the shell component comprises a test box, a humidity sensor is arranged inside the test box, a controller is arranged outside the test box, a temperature control component is arranged on one side of the test box, a spray component is arranged on the other side of the test box, a lifting component is arranged inside the test box, the lifting component and the spray component are connected through a transmission module, the lifting component comprises a threaded support cylinder movably arranged inside the test box, a rotating component is arranged on the threaded support cylinder, the rotating component comprises a rotating ring rotatably arranged on the threaded support cylinder, the rotating ring outside There are several mounting racks distributed in the circumferential direction of the side, and the mounting racks are movably provided with mounting components, and the mounting components include a second mounting cylinder installed at the outer end of the mounting rack, and a rotating rod is rotatably provided in the second mounting cylinder, and a placement disc is installed at the bottom of the rotating rod, and a lithium battery body and a cyclic charge and discharge module are arranged on the placement disc, and the lithium battery body and the cyclic charge and discharge module are electrically connected, and a positioning component for positioning the lithium battery body is arranged on the placement disc, and a temperature detection module in contact with the side wall of the lithium battery body is arranged on the positioning component, and a reciprocating moving component and an intermittent rotating component are arranged between the threaded support cylinder and the rotating rod;

[0008] The rotating assembly further comprises a gear ring 1 arranged on the outer side of the rotating ring, a rotating gear meshing with the gear ring 1 is movably arranged on the outer side of the rotating ring, and the rotating gear is connected to a rotating motor arranged on the mounting frame;

[0009] The mounting assembly further comprises a bracket 2 circumferentially distributed outside the mounting tube 2, wherein one end of the bracket 2 away from the mounting tube 2 is connected to a support ring, and the support ring is rotatably connected to the placement disc;

[0010] The reciprocating moving assembly includes a cam arranged on the outside of the threaded support cylinder, a plurality of abutment wheels movably abutting against the outer wall of the cam are movably provided in the test box, a plurality of movable plates corresponding to the abutment wheels are movably provided in the test box, a reset guide module is provided between the movable plate 2 and the mounting frame, a movable rack is installed on the outside of the movable plate 2, and a gear ring 2 meshing with the movable rack is rotatably provided at the bottom of the rotating rod;

[0011] The intermittent rotating assembly includes a ratchet groove arranged on the inner side of the second gear ring, and a movable pawl that is rotatably engaged with the ratchet groove is provided at one end of the rotating rod close to the ratchet groove. A partition is provided at the bottom of the rotating rod, and a second spring is connected between the movable pawl and the partition.

[0012] As a further solution of the present invention, the temperature control component includes:

[0013] A cooling and heating module, wherein the cooling and heating module is arranged on the outer wall of the test box, and the upper end and the lower end of the cooling and heating module are respectively connected to a liquid guide pipe penetrating the side wall of the test box;

[0014] And a mounting tube 1, which is arranged on the inner wall of the test box and is arranged in an S shape, the upper end of the mounting tube 1 is connected to the liquid inlet pipe located at the upper end of the cooling and heating module, and the lower end of the mounting tube 1 is connected to the liquid inlet pipe located at the lower end of the cooling and heating module.

[0015] As a further solution of the present invention, the spray assembly comprises:

[0016] A liquid storage tank, the liquid storage tank is arranged on the outer wall of the test box;

[0017] Atomizing nozzle, the atomizing nozzle is slidably arranged in the test box, and a water pipe penetrating the side wall of the test box is connected between the liquid storage tank and the atomizing nozzle;

[0018] And a water pump, which is installed on the side wall of the test box and is connected with the water pipe.

[0019] As a further solution of the present invention, the lifting assembly includes:

[0020] Screw rod 1, the screw rod 1 is rotatably disposed inside the test box, and one end of the screw rod 1 is connected to the lifting motor;

[0021] And a mounting tube, which is sleeved on the outside of a screw rod, and the two ends of the mounting tube are respectively connected to the upper end and the lower end of the test box through a plurality of brackets, and the mounting tube is provided with a plurality of side grooves in a circumferential direction, and the threaded support tube is movably sleeved on the outside of the mounting tube and slidably matched with the side grooves, and the threaded support tube is threadedly connected to the screw rod.

[0022] As a further solution of the present invention, the transmission module includes:

[0023] A pulley 1, wherein the pulley 1 is arranged on a screw rod 1;

[0024] Screw 2, the screw 2 is rotatably arranged on one side of the test box near the atomizing nozzle, the screw 2 is provided with a pulley 2, and a transmission belt is connected between the pulley 1 and the pulley 2;

[0025] And a threaded connection tube, the threaded connection tube is threadedly connected to the screw rod 2, the threaded connection tube is connected to a guide plate connected to the atomizing nozzle, and the end of the guide plate away from the threaded connection tube is slidably matched with a slide groove arranged on the inner wall of the test box.

[0026] As a further solution of the present invention, the positioning component includes:

[0027] A guide groove, wherein the guide groove is symmetrically arranged on the placement disc, and a guide rod is arranged in the guide groove;

[0028] A movable plate 1, wherein the movable plate 1 is symmetrically and movably arranged at both ends of the guide groove and slidably cooperates with the guide rod, and a positioning plate movably abutting against the outer wall of the lithium battery body is connected to one side of the movable plate 1 close to each other;

[0029] A rotating gear ring, which is rotatably arranged on a side of the placement disc close to the second mounting cylinder and sleeved on the outer side of the rotating rod;

[0030] And an adjusting rack, which is arranged at the bottom of the placing disc and is symmetrically distributed about the center of the rotating gear ring, the adjusting rack is respectively engaged with the two sides of the rotating gear ring, and the ends of the adjusting racks that are away from each other are connected to the corresponding moving plate 1, and an electric telescopic rod is connected between one moving plate 1 and the placing disc.

[0031] As a further solution of the present invention, the temperature detection module includes:

[0032] A side plate connected to the first movable plate;

[0033] A temperature sensor, the temperature sensor is arranged on a side of the side plate close to the lithium battery body;

[0034] and an elastic member connected between the temperature sensor and the side plate.

[0035] As a further solution of the present invention, the reset guidance module includes:

[0036] A vertical plate 1, wherein the vertical plate 1 is arranged on the movable plate 2;

[0037] A second vertical plate, the second vertical plate is arranged at the bottom of the mounting frame, and the second vertical plate is connected to a cross bar that is slidably matched with the first vertical plate;

[0038] And a spring 1, wherein the spring 1 is connected between the vertical plate 1 and the vertical plate 2 and is sleeved on the outer side of the cross bar.

[0039] As a further solution of the present invention, the direction of the threads on the first screw is opposite to the direction of the threads on the second screw.

[0040] As a further solution of the present invention, the elastic member may be an elastic telescopic rod.

[0041] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0042] The present invention can regulate the temperature inside the test box through the temperature control component, regulate the humidity inside the test box through the spray component, and stagger the height of the spray component and the lithium battery body through the cooperation of the lifting component and the transmission module, so as to quickly meet the aging detection environment requirements of the lithium battery body, detect the temperature of the surface of the lithium battery body through the temperature detection module, detect the humidity inside the test box through the humidity sensor, and wirelessly receive the detection results of the controller and the temperature detection module through the controller and display the detection results. At the same time, the normal operation of the electrical equipment in the wireless control device of the staff can be met. The stable positioning of the lithium battery body can be achieved through the positioning component, and the revolution and rotation of multiple lithium battery bodies can be achieved through the cooperation of the rotating component, the mounting component, the reciprocating moving component and the intermittent rotating component, so as to facilitate the full contact between the lithium battery body and the detection environment and improve the detection accuracy. The invention has the effects of intelligent regulation, flexible adjustment, rapid and full contact with the detection environment, efficient detection, meeting the requirements of different detection environments, reliable structure, convenient operation, and simple and practical.

[0043] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a three-dimensional diagram of a lithium battery aging test system that can simulate temperature and humidity in an embodiment of the invention.

[0045] Figure 2 It is a rear view of the temperature and humidity simulated lithium battery aging test system in an embodiment of the invention.

[0046] Figure 3 It is a first stereoscopic view of the test box in the embodiment of the invention.

[0047] Figure 4 It is a second stereoscopic view of the test box in the embodiment of the invention.

[0048] Figure 5 It is a schematic diagram of the structure of the rotating assembly in an embodiment of the invention.

[0049] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0050] Figure 7 It is a bottom view of placing a disc in an embodiment of the invention.

[0051] Figure 8 It is a schematic diagram of the structure of the gear ring 2 in the embodiment of the invention.

[0052] Fig. 9 It is a schematic diagram of the structure of the movable plate 2 in the embodiment of the invention.

[0053] Fig.10 It is a schematic diagram of the structure of the threaded support cylinder in an embodiment of the invention.

[0054] Reference numerals: 1. housing assembly; 101. test box; 102. movable door; 103. controller; 104. humidity sensor; 2. temperature control assembly; 201. cooling and heating module; 202. liquid guide tube; 203. liquid guide tube; 3. lifting assembly; 301. lifting motor; 302. screw rod 1; 303. mounting cylinder 1; 3031. side groove; 304. bracket 1; 305. threaded support cylinder; 4. spray assembly; 401. Liquid storage tank; 402, water pump; 403, water pipe; 404, atomizing nozzle; 5, transmission module; 501, pulley 1; 502, transmission belt; 503, pulley 2; 504, screw 2; 505, threaded connection cylinder; 506, guide plate; 507, slide; 6, rotating assembly; 601, retaining ring; 602, rotating ring; 603, gear ring 1; 604, mounting frame; 605, rotating gear; 606, rotating motor; 7, installation Components; 701, installation cylinder 2; 702, bracket 2; 703, rotating rod; 704, support ring; 705, placing disc; 8, positioning component; 801, guide groove; 802, moving plate 1; 803, positioning plate; 804, guide rod; 805, electric telescopic rod; 806, adjustment rack; 807, rotating gear ring; 9, temperature detection module; 901, side plate; 902, elastic member; 903, temperature sensor; 10, reciprocating Moving assembly; 1001, cam; 1002, abutment wheel; 1003, moving plate 2; 1004, moving rack; 1005, gear ring 2; 1006, vertical plate 1; 1007, cross bar; 1008, spring 1; 1009, vertical plate 2; 11, intermittent rotating assembly; 1101, ratchet groove; 1102, movable pawl; 1103, spring 2; 1104, partition; 12, lithium battery body; 13, cyclic charge and discharge module. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0056] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0057] In one embodiment of the present invention, see Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8, Fig. 9 and 10 A lithium battery aging test system capable of simulating temperature and humidity comprises a shell component 1, wherein the shell component 1 comprises a test box 101, wherein a humidity sensor 104 is arranged inside the test box 101, wherein a controller 103 is arranged outside the test box 101, wherein a temperature control component 2 is arranged on one side of the test box 101, wherein a spray component 4 is arranged on the other side of the test box 101, wherein a lifting component 3 is arranged inside the test box 101, wherein the lifting component 3 and the spray component 4 are connected via a transmission module 5, wherein the lifting component 3 comprises a threaded support cylinder 305 movably arranged inside the test box 101, wherein a rotating component 6 is arranged on the threaded support cylinder 305, wherein the rotating component 6 comprises a rotating ring 602 rotatably arranged on the threaded support cylinder 305, wherein the outer periphery of the rotating ring 602 is There are several mounting racks 604 distributed in the direction, and the mounting rack 604 is movably provided with a mounting assembly 7, and the mounting assembly 7 includes a mounting cylinder 701 installed at the outer end of the mounting rack 604, and a rotating rod 703 is rotatably provided in the mounting cylinder 701, and a placing disc 705 is installed at the bottom of the rotating rod 703, and a lithium battery body 12 and a cyclic charge and discharge module 13 are provided on the placing disc 705, and the lithium battery body 12 and the cyclic charge and discharge module 13 are electrically connected, and a positioning assembly 8 for positioning the lithium battery body 12 is provided on the placing disc 705, and a temperature detection module 9 in contact with the side wall of the lithium battery body 12 is provided on the positioning assembly 8, and a reciprocating moving assembly 10 and an intermittent rotating assembly 11 are provided between the threaded support cylinder 305 and the rotating rod 703;

[0058] The rotating assembly 6 further includes a gear ring 1 603 disposed outside the rotating ring 602, and a rotating gear 605 meshing with the gear ring 1 603 is movably disposed outside the rotating ring 602, and the rotating gear 605 is connected to a rotating motor 606 disposed on the mounting frame 604;

[0059] The mounting assembly 7 further includes a second bracket 702 circumferentially distributed outside the second mounting cylinder 701, and one end of the second bracket 702 away from the second mounting cylinder 701 is connected to a support ring 704, and the support ring 704 is rotatably connected to the placement disc 705;

[0060] The reciprocating assembly 10 includes a cam 1001 disposed on the outside of the threaded support cylinder 305, a plurality of abutment wheels 1002 movably abutting against the outer wall of the cam 1001 are movably disposed in the test box 101, a plurality of movable plates 1003 corresponding to the abutment wheels 1002 are movably disposed in the test box 101, a reset guide module is disposed between the movable plate 1003 and the mounting frame 604, a movable rack 1004 is mounted on the outside of the movable plate 1003, and a gear ring 1005 rotatably engaged with the movable rack 1004 is disposed at the bottom of the rotating rod 703;

[0061] The intermittent rotating component 11 includes a ratchet groove 1101 arranged on the inner side of the second gear ring 1005, and the rotating rod 703 is provided with a movable pawl 1102 that is rotatably engaged with the ratchet groove 1101 at one end thereof close to the ratchet groove 1101, and a partition plate 1104 is provided at the bottom of the rotating rod 703, and a second spring 1103 is connected between the movable pawl 1102 and the partition plate 1104.

[0062] In this embodiment, the temperature inside the test box 101 can be regulated by the temperature control component 2, the humidity inside the test box 101 can be adjusted by the spray component 4, and the height of the spray component 4 and the lithium battery body 12 can be staggered and adjusted by the cooperation of the lifting component 3 and the transmission module 5, so as to quickly meet the aging detection environment requirements of the lithium battery body 12. The surface temperature of the lithium battery body 12 can be detected by the temperature detection module 9, and the humidity inside the test box 101 can be detected by the humidity sensor 104. The detection results of the controller 103 and the temperature detection module 9 can be wirelessly received and displayed by the controller 103. At the same time, the wireless control device of the staff can be satisfied. The electrical equipment works normally. The rotating motor 606 drives the rotating gear 605 to rotate. The rotating gear 605 drives the rotating ring 602 and the mounting frame 604 to rotate around the rotating rod 703 by meshing with the gear ring 1 603. The mounting frame 604 drives the movable plate 2 1003 to rotate synchronously by connecting with the reset guide module. The movable plate 2 1003 pushes the abutment wheel 1002 to keep in contact with the outer wall of the cam 1001 through the reset guide module. Since the abutment wheel 1002 and the movable plate 2 1003 rotate synchronously with the mounting frame 604, the abutment wheel 1002 pushes the movable plate 2 1003 to reciprocate along the length direction of the mounting frame 604 by movably abutting with the outer wall of the cam 1001 and cooperating with the reset guide module. 3 drives the moving rack 1004 to move synchronously, and the moving rack 1004 realizes the intermittent rotation of the rotating rod 703 by meshing with the second gear ring 1005 and cooperating with the ratchet groove 1101, the movable pawl 1102 and the second spring 1103. The rotating rod 703 drives the placement disc 705 to rotate synchronously and drives the lithium battery body 12 and the cyclic charge and discharge module 13 to rotate synchronously by cooperating with the positioning component 8, which can realize the revolution and rotation of multiple lithium battery bodies 12. At the same time, it is convenient to fully contact the lithium battery body 12 with the detection environment to avoid the reduction of detection accuracy caused by the inability of the lithium battery body 12 to fully contact with the detection environment during the placement process. It has intelligent control, flexible adjustment, fast and full contact with the detection environment, efficient detection, The invention can meet the requirements of different testing environments, has a reliable structure, convenient operation, and is simple and practical. The test box 101 has movable doors 102 hinged on both sides of the front. Two humidity sensors 104 are provided and are respectively arranged at the top and bottom of the test box 101. By comparing the humidity data detected by the two humidity sensors 104, it is confirmed whether the humidity inside the test box 101 meets the requirements of the testing environment. If it does not meet the requirements of the testing environment, the humidity inside the test box 101 is adjusted accordingly. The cam 1001 is provided with a plurality of protrusions, and the rotation frequency of the lithium battery body 12 can be accelerated through the plurality of protrusions, so that the lithium battery body 12 can be fully contacted with the testing environment. The two ends of the threaded support cylinder 305 are respectively provided with retaining rings 601.The position of the rotating ring 602 can be stably supported by the retaining ring 601. The reset guide module includes a vertical plate 1006 disposed on the second moving plate 1003 and a vertical plate 1009 disposed at the bottom of the mounting frame 604. The vertical plate 1009 is connected with a cross bar 1007 that slides with the vertical plate 1006. A spring 1008 that is sleeved on the outside of the cross bar 1007 is connected between the vertical plate 1006 and the vertical plate 1009. The reciprocating movement of the second moving plate 1003 can be achieved through the sliding cooperation between the vertical plate 1006 and the cross bar 1007 and the connection of the spring 1008.

[0063] In one embodiment of the present invention, see Figure 1 and Figure 3 The temperature control component 2 includes a cooling and heating module 201 arranged on the outer wall of the test box 101, and the upper end and the lower end of the cooling and heating module 201 are respectively connected to the liquid introduction pipe 202 that penetrates the side wall of the test box 101, and the inner wall of the test box 101 is provided with an S-shaped installation tube 303, the upper end of the installation tube 303 is connected to the liquid introduction pipe 202 located at the upper end of the cooling and heating module 201, and the lower end of the installation tube 303 is connected to the liquid introduction pipe 202 located at the lower end of the cooling and heating module 201.

[0064] In this embodiment, the liquid guide tube 202 and the liquid guide tube 203 are filled with heat transfer liquid. When the lithium battery body 12 needs to be tested for high temperature, the cooling and heating module 201 heats the heat transfer liquid and pushes the heat transfer liquid from the upper end of the cooling and heating module 201 through the liquid guide tube 202 and the liquid guide tube 203 to flow back to the lower end of the cooling and heating module 201. The heated heat transfer liquid can heat the air inside the test box 101 during the flow in the liquid guide tube 203, meeting the test box 101 high temperature detection demand; when the lithium battery body 12 needs to be tested at a low temperature, the cooling and heating module 201 condenses the thermal liquid and pushes the thermal liquid from the upper end of the cooling and heating module 201 through the liquid guide tube 202 and the liquid guide tube 203 back to the lower end of the cooling and heating module 201. The condensed thermal liquid can absorb heat and cool the air inside the test box 101 during the flow in the liquid guide tube 203, thereby meeting the low temperature detection demand in the test box 101.

[0065] In one embodiment of the present invention, see Figure 1 , Figure 2 , Figure 3 and Figure 4The spray assembly 4 includes a liquid storage tank 401 arranged on the outer wall of the test box 101, an atomizing nozzle 404 is movably arranged in the test box 101, a water pipe 403 penetrating the side wall of the test box 101 is connected between the liquid storage tank 401 and the atomizing nozzle 404, and a water pump 402 connected to the water pipe 403 is installed on the side wall of the test box 101.

[0066] In this embodiment, the water pump 402 guides the water in the liquid storage tank 401 into the atomizing nozzle 404 through the water pipe 403, and the atomizing nozzle 404 sprays the water in an atomized form, so as to adjust the humidity in the air inside the test box 101 accordingly, thereby meeting the aging detection requirements of the lithium battery body 12 with different air humidity and improving the applicability of the device. The water pipe 403 is configured as a telescopic hose, which can meet the water guide requirements of the atomizing nozzle 404 at different heights.

[0067] In one embodiment of the present invention, see Figure 1 , Figure 3 , Figure 4 and Figure 5 The lifting assembly 3 includes a screw rod 302 rotatably arranged inside the test box 101, one end of the screw rod 302 is connected to the lifting motor 301, a mounting tube 303 is sleeved on the outer side of the screw rod 302, and the two ends of the mounting tube 303 are respectively connected to the upper end and the lower end of the test box 101 through a plurality of brackets 304, and the mounting tube 303 is circumferentially provided with a plurality of side grooves 3031, the threaded support tube 305 is movably sleeved on the outer side of the mounting tube 303 and slidably matched with the side grooves 3031, and the threaded support tube 305 is threadedly connected to the screw rod 302;

[0068] The transmission module 5 includes a pulley 501 arranged on the screw 302, a screw 504 is rotatably arranged on one side of the test box 101 close to the atomizing nozzle 404, a pulley 503 is arranged on the screw 504, a transmission belt 502 is connected between the pulley 501 and the pulley 503, a threaded connection tube 505 is threadedly connected to the screw 504, a guide plate 506 connected to the atomizing nozzle 404 is connected to the threaded connection tube 505, and one end of the guide plate 506 away from the threaded connection tube 505 is slidably matched with a slide groove 507 arranged on the inner wall of the test box 101, wherein the thread direction on the screw 302 is opposite to the thread direction on the screw 504.

[0069] In this embodiment, when the lithium battery body 12 is subjected to high temperature detection, the moisture in the air moves upward, the lifting motor 301 drives the screw 302 to rotate clockwise, the screw 302 drives the threaded support tube 305 to move upward by means of threaded connection with the threaded support tube 305 and the sliding cooperation between the threaded support tube 305 and the side groove 3031, the threaded support tube 305 drives the lithium battery body 12 to move upward synchronously through the connection between the rotating component 6 and the mounting component 7, and at the same time, the screw 302 drives the pulley 501 to rotate clockwise, and the pulley The wheel 1 501 drives the screw 2 504 to rotate synchronously by connecting the transmission belt 502 and the pulley 2 503. The screw 2 504 drives the atomizing nozzle 404 to move downward by threaded connection with the threaded connection cylinder 505 and sliding cooperation between the guide plate 506 and the slide groove 507. The atomizing nozzle 404 is located below the lithium battery body 12. The water mist sprayed by the atomizing nozzle 404 will move upward under the action of high temperature, so that the lithium battery body 12 is fully in contact with moisture. When the lithium battery body 12 is tested at low temperature, the moisture in the air The lifting motor 301 drives the screw rod 302 to rotate counterclockwise, and the screw rod 302 drives the threaded support tube 305 to move downward by means of threaded connection with the threaded support tube 305 and sliding cooperation between the threaded support tube 305 and the side groove 3031. The threaded support tube 305 drives the lithium battery body 12 to move downward synchronously through the connection between the rotating component 6 and the mounting component 7. At the same time, the screw rod 302 drives the pulley 501 to rotate counterclockwise, and the pulley 501 drives the screw rod 302 by means of the connection between the transmission belt 502 and the pulley 2 503. The two screws 504 rotate synchronously, and the two screws 504 drive the atomizing nozzle 404 to move upward by being threadedly connected with the threaded connecting tube 505 and slidingly cooperating with the guide plate 506 and the slide groove 507. The atomizing nozzle 404 is located above the lithium battery body 12. The water mist sprayed by the atomizing nozzle 404 will move downward under the action of low temperature, which is convenient for the lithium battery body 12 to fully contact with moisture. The height of the lithium battery body 12 and the atomizing nozzle 404 can be staggeredly adjusted, so that the lithium battery body 12 is fully in contact with moisture, thereby improving the detection accuracy.

[0070] In one embodiment of the present invention, see Figure 1 , Figure 5 and Figure 7The positioning assembly 8 includes a guide groove 801 symmetrically arranged on the placement disc 705, a guide rod 804 is arranged in the guide groove 801, and two ends of the guide groove 801 are symmetrically and movably provided with a moving plate 802 that slides with the guide rod 804, and the side of the moving plate 802 that is close to each other is connected with a positioning plate 803 that is movably abutted against the outer wall of the lithium battery body 12, and the side of the placement disc 705 that is close to the installation cylinder 2 701 is rotatably connected with a rotating gear ring 807 sleeved on the outside of the rotating rod 703, and the bottom of the placement disc 705 is symmetrically distributed with respect to the center of the rotating gear ring 807. The adjusting racks 806 that are respectively meshed with the two sides of the rotating gear ring 807 are respectively distributed, and the ends of the adjusting racks 806 that are far away from each other are connected to the corresponding moving plate 802, and an electric telescopic rod 805 is connected between one of the moving plates 802 and the placement disc 705;

[0071] The temperature detection module 9 includes a side plate 901 connected to the movable plate 802 . A temperature sensor 903 is provided on a side of the side plate 901 close to the lithium battery body 12 . An elastic member 902 is connected between the temperature sensor 903 and the side plate 901 .

[0072] In this embodiment, in the initial state, the symmetrically arranged moving plates 802 are away from each other, the lithium battery body 12 is placed on the placement disk 705 and is located between the symmetrically arranged positioning plates 803, the lithium battery body 12 and the cyclic charge and discharge module 13 are connected by wires, the electric telescopic rod 805 extends and pushes the moving plate 802 on one side close to the rotating rod 703, the moving plate 802 drives the positioning plate 803 to move synchronously, and one side of the lithium battery body 12 can be abutted, at the same time, the moving plate 802 drives the corresponding adjusting rack 806 to move synchronously, the adjusting rack 806 drives the adjusting rack 806 on the other side to move by meshing with the rotating gear ring 807, and the adjusting rack 806 on the other side drives the corresponding moving plate 802 to move synchronously. The movable plate 802 is close to the rotating rod 703, so that the symmetrically arranged positioning plates 803 are close to each other, and the lithium battery body 12 can be stably positioned; at the same time, the movable plate 802 drives the side plate 901 to move synchronously, and the side plate 901 fits the elastic member 902 with the side wall of the lithium battery body 12 through the temperature sensor 903, so that the temperature of the surface of the lithium battery body 12 can be detected. By setting the temperature sensors 903 on both sides of the lithium battery body 12, the lithium battery body 12 can be double-detected, avoiding the problem of inaccurate detection caused by malfunction of the temperature sensor 903 and inaccurate detection due to insufficient contact between the lithium battery body 12 and the air, wherein the elastic member 902 can be an elastic telescopic rod.

[0073] Specific:

[0074] The lithium battery body 12 is placed on the placement disc 705 and between the symmetrically arranged positioning plates 803. The lithium battery body 12 and the cyclic charge and discharge module 13 are connected by wires. The electric telescopic rod 805 extends and pushes the moving plate 802 on one side close to the rotating rod 703. The moving plate 802 drives the positioning plate 803 to move synchronously, and can abut against one side of the lithium battery body 12. At the same time, the moving plate 802 drives the corresponding adjustment rack 806 to move synchronously. The adjustment rack 806 is adjusted by rotating the gear ring. The meshing mode of 807 drives the adjusting rack 806 on the other side to move, and the adjusting rack 806 on the other side drives the corresponding moving plate 802 to approach the rotating rod 703, so as to achieve the mutual approach of the symmetrically arranged positioning plates 803, and the lithium battery body 12 can be stably positioned; at the same time, the moving plate 802 drives the side plate 901 to move synchronously, and the side plate 901 fits the elastic member 902 with the side wall of the lithium battery body 12 through the temperature sensor 903, so that the temperature of the surface of the lithium battery body 12 can be detected;

[0075] When it is necessary to perform high-temperature detection on the lithium battery body 12, the cooling and heating module 201 heats the thermal conduction liquid and pushes the thermal conduction liquid to flow back from the upper end of the cooling and heating module 201 through the liquid guide tube 202 and the liquid guide tube 203 to the lower end of the cooling and heating module 201. The heated thermal conduction liquid can heat the air inside the test box 101 during the flow in the liquid guide tube 203, thereby meeting the high-temperature detection requirement in the test box 101; when it is necessary to perform low-temperature detection on the lithium battery body 12, the cooling and heating module 201 condenses the thermal conduction liquid and pushes the thermal conduction liquid to flow back from the upper end of the cooling and heating module 201 through the liquid guide tube 202 and the liquid guide tube 203 to the lower end of the cooling and heating module 201. The condensed thermal conduction liquid can absorb heat and cool the air inside the test box 101 during the flow in the liquid guide tube 203, thereby meeting the low-temperature detection requirement in the test box 101;

[0076] The water pump 402 guides the water in the liquid storage tank 401 to the atomizing nozzle 404 through the water pipe 403, and the atomizing nozzle 404 sprays the water in atomized form, so as to adjust the humidity in the air inside the test box 101 accordingly;

[0077] When the lithium battery body 12 is subjected to high temperature detection, the moisture in the air moves upward, and the lifting motor 301 drives the screw rod 302 to rotate clockwise. The screw rod 302 drives the threaded support tube 305 to move upward by means of threaded connection with the threaded support tube 305 and sliding cooperation between the threaded support tube 305 and the side groove 3031. The threaded support tube 305 drives the lithium battery body 12 to move upward synchronously through the connection between the rotating component 6 and the mounting component 7. At the same time, the screw rod 302 drives the pulley 1 501 to rotate clockwise. The pulley 1 501 drives the screw rod 2 504 to rotate synchronously by means of the connection between the transmission belt 502 and the pulley 2 503. The screw rod 2 504 drives the atomizing nozzle 404 to move downward by means of threaded connection with the threaded connection tube 505 and sliding cooperation between the guide plate 506 and the slide groove 507. The atomizing nozzle 404 is located below the lithium battery body 12. The water mist sprayed by the atomizing nozzle 404 will move upward under the action of high temperature, so that the lithium battery body 12 is fully in contact with moisture. When the lithium battery body 12 is tested for low temperature, the moisture in the air moves downward, and the lifting motor 301 drives the screw rod 302 to rotate counterclockwise. The screw rod 302 drives the threaded support tube 305 downward by threaded connection with the threaded support tube 305 and the sliding cooperation between the threaded support tube 305 and the side groove 3031. The threaded support tube 305 drives the lithium battery body 12 to move downward synchronously through the connection between the rotating component 6 and the mounting component 7. At the same time, the screw rod 302 drives the pulley 1 501 to rotate counterclockwise. The pulley 1 501 drives the screw 2 504 to rotate synchronously by connecting the transmission belt 502 and the pulley 2 503. The screw 2 504 drives the atomizing nozzle 404 upward by threaded connection with the threaded connection tube 505 and the sliding cooperation between the guide plate 506 and the slide groove 507. The atomizing nozzle 404 is located above the lithium battery body 12. The water mist sprayed by the atomizing nozzle 404 will move downward under the action of the low temperature, so that the lithium battery body 12 is fully in contact with moisture.

[0078] The rotating motor 606 drives the rotating gear 605 to rotate, and the rotating gear 605 drives the rotating ring 602 and the mounting frame 604 to rotate around the rotating rod 703 by meshing with the gear ring 1 603. The mounting frame 604 drives the movable plate 2 1003 to rotate synchronously by connecting with the reset guide module. The movable plate 2 1003 pushes the abutment wheel 1002 to keep in contact with the outer wall of the cam 1001 through the reset guide module. Since the abutment wheel 1002 and the movable plate 2 1003 rotate synchronously with the mounting frame 604, the abutment wheel 1002 pushes the movable plate 2 1003 along the mounting frame 604 by movably abutting with the outer wall of the cam 1001 and cooperating with the reset guide module. The frame 604 moves back and forth in the length direction, and the movable plate 2 1003 drives the movable rack 1004 to move synchronously. The movable rack 1004 realizes the intermittent rotation of the rotating rod 703 by meshing with the gear ring 2 1005 and cooperating with the ratchet groove 1101, the movable pawl 1102 and the spring 2 1103. The rotating rod 703 drives the placement disk 705 to rotate synchronously and drives the lithium battery body 12 and the cyclic charge and discharge module 13 to rotate synchronously by cooperating with the positioning component 8, so as to make the lithium battery body 12 fully contact with the detection environment, thereby avoiding the reduction of detection accuracy caused by the lithium battery body 12 not being able to fully contact with the detection environment during the placement process.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery aging test system capable of simulating temperature and humidity, comprising a housing assembly, characterized in that: The shell assembly includes a test box, a humidity sensor is provided inside the test box, a controller is provided outside the test box, a temperature control assembly is provided on one side of the test box, a spray assembly is provided on the other side of the test box, a lifting assembly is provided inside the test box, and the lifting assembly and the spray assembly are connected through a transmission module, the lifting assembly includes a threaded support cylinder movably arranged inside the test box, a rotating assembly is provided on the threaded support cylinder, the rotating assembly includes a rotating ring rotatably arranged on the threaded support cylinder, a plurality of mounting racks are circumferentially distributed on the outer side of the rotating ring, a mounting assembly is movably provided on the mounting rack, the mounting assembly includes a mounting cylinder 2 installed at the outer end of the mounting rack, a rotating rod is rotatably provided in the mounting cylinder 2, a placing disc is installed on the top of the rotating rod, a lithium battery body and a cyclic charge and discharge module are provided on the placing disc, the lithium battery body and the cyclic charge and discharge module are electrically connected, a positioning assembly for positioning the lithium battery body is provided on the placing disc, a temperature detection module in contact with the side wall of the lithium battery body is provided on the positioning assembly, and a reciprocating moving assembly and an intermittent rotating assembly are provided between the threaded support cylinder and the rotating rod; The rotating assembly further comprises a gear ring 1 arranged on the outer side of the rotating ring, a rotating gear meshing with the gear ring 1 is movably arranged on the outer side of the rotating ring, and the rotating gear is connected to a rotating motor arranged on the mounting frame; The mounting assembly further comprises a bracket 2 circumferentially distributed outside the mounting tube 2, wherein one end of the bracket 2 away from the mounting tube 2 is connected to a support ring, and the support ring is rotatably connected to the placement disc; The reciprocating moving assembly includes a cam arranged on the outside of the threaded support cylinder, a plurality of abutment wheels movably abutting against the outer wall of the cam are movably provided in the test box, a plurality of movable plates corresponding to the abutment wheels are movably provided in the test box, a reset guide module is provided between the movable plate 2 and the mounting frame, a movable rack is installed on the outside of the movable plate 2, and a gear ring 2 meshing with the movable rack is rotatably provided at the bottom of the rotating rod; The intermittent rotating assembly comprises a ratchet groove arranged inside the second gear ring, an end of the rotating rod close to the ratchet groove is provided with a movable pawl movably engaged with the ratchet groove, a partition is provided at the bottom of the rotating rod, and a second spring is connected between the movable pawl and the partition; The spray assembly comprises: A liquid storage tank, the liquid storage tank is arranged on the outer wall of the test box; Atomizing nozzle, the atomizing nozzle is slidably arranged in the test box, and a water pipe penetrating the side wall of the test box is connected between the liquid storage tank and the atomizing nozzle; and a water pump, the water pump being installed on the side wall of the test box and being connected to the water pipe; The lifting assembly comprises: Screw rod 1, the screw rod 1 is rotatably disposed inside the test box, and one end of the screw rod 1 is connected to the lifting motor; and a mounting tube 1, the mounting tube is sleeved on the outside of the screw rod 1, the two ends of the mounting tube 1 are respectively connected to the upper end and the lower end of the test box through a plurality of brackets 1, the mounting tube is provided with a plurality of side grooves in a circumferential direction, the threaded support tube is movably sleeved on the outside of the mounting tube 1 and slidably matched with the side grooves, and the threaded support tube is threadedly connected to the screw rod 1; The transmission module comprises: A pulley 1, wherein the pulley 1 is arranged on a screw rod 1; Screw 2, the screw 2 is rotatably arranged on one side of the test box near the atomizing nozzle, the screw 2 is provided with a pulley 2, and a transmission belt is connected between the pulley 1 and the pulley 2; and a threaded connection tube, wherein the threaded connection tube is threadedly connected to the screw rod 2, the threaded connection tube is connected to a guide plate connected to the atomizing nozzle, and one end of the guide plate away from the threaded connection tube is slidably matched with a slide groove arranged on the inner wall of the test box; The reset guide module comprises: A vertical plate 1, wherein the vertical plate 1 is arranged on the movable plate 2; A second vertical plate, the second vertical plate is arranged at the bottom of the mounting frame, and the second vertical plate is connected to a cross bar that is slidably matched with the first vertical plate; and a spring 1, wherein the spring 1 is connected between the vertical plate 1 and the vertical plate 2 and is sleeved on the outer side of the cross bar; The direction of the threads on the first screw is opposite to the direction of the threads on the second screw.

2. The temperature and humidity simulated lithium battery aging test system according to claim 1, characterized in that: The temperature control component comprises: A cooling and heating module, wherein the cooling and heating module is arranged on the outer wall of the test box, and the upper end and the lower end of the cooling and heating module are respectively connected to a liquid guide pipe penetrating the side wall of the test box; And a mounting tube 1, which is arranged on the inner wall of the test box and is arranged in an S shape, the upper end of the mounting tube 1 is connected to the liquid inlet pipe located at the upper end of the cooling and heating module, and the lower end of the mounting tube 1 is connected to the liquid inlet pipe located at the lower end of the cooling and heating module.

3. The temperature and humidity simulated lithium battery aging test system according to claim 1, characterized in that: The positioning component comprises: A guide groove, wherein the guide groove is symmetrically arranged on the placement disc, and a guide rod is arranged in the guide groove; A movable plate 1, wherein the movable plate 1 is symmetrically and movably arranged at both ends of the guide groove and slidably cooperates with the guide rod, and a positioning plate movably abutting against the outer wall of the lithium battery body is connected to one side of the movable plate 1 close to each other; A rotating gear ring, which is rotatably arranged on a side of the placement disc close to the second mounting cylinder and sleeved on the outer side of the rotating rod; And an adjusting rack, which is arranged at the bottom of the placing disc and is symmetrically distributed about the center of the rotating gear ring, the adjusting rack is respectively engaged with the two sides of the rotating gear ring, and the ends of the adjusting racks that are away from each other are connected to the corresponding moving plate 1, and an electric telescopic rod is connected between one moving plate 1 and the placing disc.

4. The temperature and humidity simulated lithium battery aging test system according to claim 1, characterized in that: The temperature detection module comprises: A side plate connected to the first movable plate; A temperature sensor, the temperature sensor is arranged on a side of the side plate close to the lithium battery body; and an elastic member connected between the temperature sensor and the side plate.

5. The temperature and humidity simulated lithium battery aging test system according to claim 4, characterized in that: The elastic member is an elastic telescopic rod.

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