A lithium battery low-temperature performance test environment simulation cabin

Abstract

The utility model relates to lithium battery test technical field especially relates to a kind of lithium battery low temperature performance test environment simulation cabin.The utility model provides such a kind of lithium battery low temperature performance test environment simulation cabin, including cabin, temperature control mechanism, control panel, door panel, support seat, rotating shaft, first gear, drive motor, second gear, lifting assembly and clamping assembly, cabin front side is rotatably connected with door panel, and the upper side of cabin front side wall is equipped with control panel.The temperature inside cabin can be accurately adjusted to the required low temperature state by temperature control mechanism, simulating the working scene of lithium battery in low temperature environment;Meanwhile, the collaborative operation of drive motor, rotating shaft and lifting assembly can make lithium battery move up and down reciprocatingly while rotating, simulate vibration and rotation composite working condition, compared with single test condition, more truly restore lithium battery actual use environment, improve the reliability and effectiveness of test result.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing technology, and in particular to a lithium battery low-temperature performance testing environment simulation chamber. Background Technology

[0002] With the rapid development of new energy technologies, lithium batteries are widely used in electric vehicles, energy storage systems, and other fields due to their advantages such as high energy density and long cycle life. In cold regions or under low-temperature conditions, the charge-discharge performance, cycle life, and safety of lithium batteries are significantly affected. Therefore, low-temperature performance testing of lithium batteries has become a key step in ensuring product quality and reliability.

[0003] Existing equipment mostly employs static testing in constant temperature chambers, which can only simulate a single low-temperature environment and cannot reproduce dynamic operating conditions. Such equipment has significant limitations: firstly, it cannot simulate the vibration and rotation conditions of lithium batteries in actual applications caused by equipment operation, vehicle movement, etc. In real-world use, vibration and rotation can lead to deformation of the internal electrode structure and uneven electrolyte distribution, affecting the low-temperature performance of the lithium battery, resulting in a significant deviation between existing test results and actual application scenarios; secondly, some equipment capable of dynamic testing has independent vibration and temperature control, making it difficult to accurately control the temperature and maintain a stable low-temperature testing environment, leading to a lack of accuracy and consistency in the test data. Utility Model Content

[0004] To overcome the aforementioned shortcomings, the technical problem is to provide a low-temperature performance testing environment simulation chamber for lithium batteries.

[0005] A lithium battery low-temperature performance testing environment simulation chamber includes a chamber body, a temperature control mechanism, a control panel, a door panel, a support base, a rotating shaft, a first gear, a drive motor, a second gear, a lifting assembly, and a clamping assembly. A door panel is rotatably connected to the front of the chamber body. A control panel is installed on the upper side of the front sidewall of the chamber body. A temperature control mechanism is installed at the top of the chamber body. A rotating shaft is movably connected to the bottom of the chamber body. A support base is connected to the top of the rotating shaft. A drive motor is installed on the left side of the rotating shaft inside the chamber body. The drive motor and the temperature control mechanism are electrically connected to the control panel via electrical wiring. A second gear is connected to the output shaft of the drive motor. A first gear is connected to the outer side of the rotating shaft. The first gear meshes with the second gear, and the first gear is longer than the second gear. A lifting assembly is connected to the bottom of the rotating shaft. A clamping assembly is provided on the support base.

[0006] Optionally, the clamping assembly includes a dual-axis motor, screws, and clamping blocks. The dual-axis motor is installed in the center of the support base, and screws are connected to the output shafts at both ends of the motor. The screws are rotatably connected to the inside of the support base. Clamping blocks are symmetrically slidably connected to the top of the support base, and the clamping blocks are threadedly connected to the corresponding screws. The dual-axis motor is electrically connected to the control panel.

[0007] Optionally, the lifting assembly includes a connecting rod, a connecting cylinder, and a ball. The connecting rod is connected to the bottom of the rotating shaft, and an arc-shaped guide groove is machined on the outer side of the connecting rod. The connecting cylinder is connected to the bottom of the cabin. The connecting rod and the connecting cylinder are movably connected. A ball is connected to one side of the connecting cylinder, and the ball is slidably connected to the arc-shaped guide groove.

[0008] Optionally, it also includes a connecting pipe, a support frame, a venting component, a spring, and a sealing ring. The connecting pipe is connected and communicates with the upper left side of the cabin. The support frame is connected to the right side inside the connecting pipe. The venting component is slidably connected to the support frame. A spring connects the venting component and the support frame. The sealing ring is connected to the right side inside the connecting pipe. Under normal conditions, the venting component fits tightly with the sealing ring to achieve a sealed connection.

[0009] Optionally, it also includes casters, with casters installed at all four corners of the bottom of the cabin.

[0010] Optionally, it also includes a transparent window, which is attached to the door panel.

[0011] Compared with the prior art, this utility model has the following advantages: 1. The temperature control mechanism can accurately adjust the internal temperature of the chamber to the required low temperature state, simulating the working scenario of lithium battery in low temperature environment; at the same time, the coordinated operation of drive motor, rotating shaft and lifting component can enable lithium battery to move up and down while rotating, simulating the combined working condition of vibration and rotation. Compared with single test conditions, it more realistically restores the actual use environment of lithium battery, and improves the reliability and effectiveness of test results.

[0012] 2. The clamping assembly uses a dual-axis motor to drive the screw and clamping block, which can stably clamp the lithium battery and prevent the lithium battery from shifting during the test and affecting the test data. The connecting pipe, venting parts and sealing ring and other structures can automatically depressurize when the internal pressure of the chamber exceeds the preset value and restore the seal after the pressure drops, preventing the chamber from being damaged due to abnormal pressure, ensuring the safety of equipment and personnel, and maintaining a stable test environment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the cabin, support base, and clamping block.

[0015] Figure 3 This is a cross-sectional view of the support base component of this utility model.

[0016] Figure 4 This is a cross-sectional view of the cabin and connecting cylinder components of this utility model.

[0017] Figure 5This is a cross-sectional view of the connecting pipe component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1: Cabin; 101: Temperature control mechanism; 2: Caster wheel; 3: Control panel; 4: Door panel; 5: Transparent window; 6: Support base; 7: Dual-axis motor; 8: Screw; 9: Clamping block; 10: Rotating shaft; 11: First gear; 12: Drive motor; 13: Second gear; 14: Connecting rod; 15: Connecting cylinder; 16: Ball; 17: Connecting pipe; 18: Support frame; 19: Venting component; 20: Spring; 21: Sealing ring. Detailed Implementation

[0019] Example: A low-temperature performance testing environment simulation chamber for lithium batteries, such as... Figures 1-4 As shown, the device includes a chamber 1, a temperature control mechanism 101, a control panel 3, a door panel 4, a support base 6, a rotating shaft 10, a first gear 11, a drive motor 12, a second gear 13, a lifting assembly, and a clamping assembly. The door panel 4 is rotatably connected to the front of the chamber 1, enabling its opening and closing for placing and removing the lithium battery to be tested. The control panel 3 is bolted to the upper side of the front wall of the chamber 1, serving as a human-machine interface for controlling the operation of various functional components. The temperature control mechanism 101 is bolted to the top of the chamber 1, allowing for precise temperature control of the chamber's interior to simulate the low-temperature testing environment required for lithium batteries. The rotating shaft 10 is movably connected to the bottom of the chamber 1, and a support base 6 is connected to the top of the rotating shaft 10. The support 6 is used to support the lithium battery to be tested. Inside the chamber 1, a drive motor 12 is bolted to the left of the rotating shaft 10. The drive motor 12 and the temperature control mechanism 101 are electrically connected to the control panel 3 through electrical circuits, so that the control panel 3 can control them. A second gear 13 is connected to the output shaft of the drive motor 12. A first gear 11 is welded to the outside of the rotating shaft 10. The first gear 11 and the second gear 13 mesh, and the length of the first gear 11 is longer than that of the second gear 13. Within the range of the first gear 11's vertical movement, the two always remain meshed to ensure stable power transmission. A lifting assembly is connected to the bottom of the rotating shaft 10, and a clamping assembly is provided on the support 6.

[0020] like Figures 2-3As shown, the clamping assembly includes a dual-axis motor 7, screws 8, and clamping blocks 9. The dual-axis motor 7 is bolted to the center of the support base 6, and screws 8 are connected to its left and right output shafts respectively. The screws 8 are rotatably connected to the inside of the support base 6. The clamping blocks 9 are symmetrically slidably connected to the top of the support base 6, and the clamping blocks 9 are threadedly connected to the corresponding screws 8. The dual-axis motor 7 is electrically connected to the control panel 3. When the lithium battery to be tested is placed on the support base 6, the dual-axis motor 7 is started by operating the control panel 3. The dual-axis motor 7 drives the screws 8 to rotate synchronously. Under the action of threaded transmission, the clamping blocks 9 on both sides move closer to each other until the lithium battery is clamped and fixed, thereby ensuring the stability of the lithium battery in the subsequent testing process. If it is necessary to release the lithium battery, the dual-axis motor 7 is controlled to rotate in reverse, driving the screws 8 to rotate in reverse. The two clamping blocks 9 will move away from each other under the threaded transmission, realizing the release operation of the lithium battery.

[0021] like Figure 4 As shown, the lifting assembly includes a connecting rod 14, a connecting cylinder 15, and a ball 16. The connecting rod 14 is welded to the bottom of the rotating shaft 10. An arc-shaped guide groove is machined on the outer side of the connecting rod 14. The connecting cylinder 15 is connected to the bottom of the cabin 1. The connecting rod 14 and the connecting cylinder 15 are movably connected. A ball 16 is connected to one side of the connecting cylinder 15. The ball 16 is slidably connected to the arc-shaped guide groove.

[0022] When conducting low-temperature testing of lithium batteries, first, rotate and open the door panel 4, place the lithium battery with the detector installed on the support base 6, and connect the detector to the control panel 3 to collect various performance data during the lithium battery test. Then, operate the control panel 3 to start the dual-axis motor 7 of the clamping assembly. Through the threaded transmission of the screw 8 and the clamping block 9, the lithium battery is clamped and fixed, completing the preparation work before the test. After preparation, close the door panel 4, set the parameters of the temperature control mechanism 101 on the control panel 3, and adjust the temperature control mechanism 101 to regulate the internal temperature of the chamber 1, accurately adjusting the internal temperature of the chamber 1 to the required low-temperature environment, thereby simulating the working environment of the lithium battery at low temperatures. Simultaneously, the control panel 3 starts the drive motor 12. The output shaft of the drive motor 12 rotates, driving the second gear 13 to rotate. Through gear meshing, the first gear 11 rotates synchronously with the rotating shaft 10. The rotating shaft 10 then drives the support base 6 and the lithium battery fixed on it to rotate. During the rotation of the rotating shaft 10, the connecting rod 14 connected to its bottom rotates accordingly. Due to the sliding engagement between the arc-shaped guide groove on the connecting rod 14 and the ball 16 inside the connecting cylinder 15, the connecting rod 14 will reciprocate up and down under the limiting action of the ball 16. This reciprocating movement will drive the rotating shaft 10, the first gear 11, and the support base 6 to move up and down synchronously, so that the lithium battery moves up and down while rotating, thereby simulating the operating conditions of the lithium battery under a combined state of vibration and rotation. During the entire test, the detector will collect various performance data of the lithium battery in real time and transmit the data to the control panel 3, so that the operator can record and adjust the test process. When the test is completed, the control panel 3 turns off the drive motor 12, stopping the rotation and lifting movements, and at the same time turns off the temperature control mechanism 101, stopping temperature regulation. Finally, the dual-axis motor 7 of the clamping assembly reverses its rotation, releasing the clamp on the lithium battery, allowing the door panel 4 to be opened and the tested lithium battery to be removed.

[0023] like Figures 4-5As shown, it also includes a connecting pipe 17, a support frame 18, a venting component 19, a spring 20, and a sealing ring 21. The connecting pipe 17 is connected and communicates with the upper left side of the chamber 1. The support frame 18 is connected to the right side inside the connecting pipe 17. The venting component 19 is slidably connected to the support frame 18. The spring 20 is connected between the venting component 19 and the support frame 18. The sealing ring 21 is connected to the right side inside the connecting pipe 17. Under normal conditions, the venting component 19 is tightly fitted with the sealing ring 21 to achieve a sealed connection. During the low-temperature test of the lithium battery, if the temperature is adjusted by the temperature control mechanism 101, causing the chamber to... When the internal pressure rises and exceeds the preset value, the force generated by this pressure will overcome the elasticity of the spring 20 and push the venting component 19 to the left, causing the spring 20 to compress and deform. At this time, the venting component 19 is separated from the sealing ring 21, and the excess pressurized gas inside the chamber 1 is discharged to the outside through the connecting pipe 17. When the internal pressure of the chamber 1 drops below the preset value, the spring 20 rebounds due to its own elastic restoring force, driving the venting component 19 to move to the right, and re-fit tightly with the sealing ring 21, restoring the sealing state inside the chamber 1, and ensuring the stability and safety of the test environment.

[0024] like Figures 1-2 As shown, it also includes casters 2 and transparent windows 5. Casters 2 are installed at the four corners of the bottom of the chamber 1. The casters 2 have a 360-degree free rotation function and a braking device, which can flexibly move the entire chamber 1 according to actual needs, which is convenient for the installation, debugging and position adjustment of the equipment. When it is necessary to fix the chamber 1, the chamber 1 can be firmly fixed by operating the braking device of the casters 2 to prevent it from shifting during the test. A transparent window 5 is connected to the door panel 4. The transparent window 5 is made of a high-strength, low-temperature resistant material with good light transmittance, so that the operator can observe the test status of the lithium battery inside the chamber 1 in real time through the transparent window 5 without opening the chamber 1, including the appearance changes of the lithium battery, the clamping status and the operation during the test, which is convenient for timely detection and handling of abnormalities.

Claims

1. A low-temperature performance testing environment simulation chamber for lithium batteries, characterized in that, The system includes a cabin (1), a temperature control mechanism (101), a control panel (3), a door panel (4), a support base (6), a rotating shaft (10), a first gear (11), a drive motor (12), a second gear (13), a lifting assembly, and a clamping assembly. A door panel (4) is rotatably connected to the front of the cabin (1). A control panel (3) is installed on the upper side of the front wall of the cabin (1). A temperature control mechanism (101) is installed at the top inside the cabin (1). A rotating shaft (10) is movably connected to the bottom inside the cabin (1). A support base (6) is connected to the top of the rotating shaft (10). (1) A drive motor (12) is installed on the left side of the rotating shaft (10). The drive motor (12) and the temperature control mechanism (101) are electrically connected to the control panel (3) through electrical circuits. A second gear (13) is connected to the output shaft of the drive motor (12). A first gear (11) is connected to the outside of the rotating shaft (10). The first gear (11) meshes with the second gear (13), and the length of the first gear (11) is longer than that of the second gear (13). A lifting assembly is connected to the bottom of the rotating shaft (10), and a clamping assembly is provided on the support base (6).

2. The lithium battery low-temperature performance testing environment simulation chamber according to claim 1, characterized in that, The clamping assembly includes a dual-axis motor (7), a screw (8), and a clamping block (9). The dual-axis motor (7) is installed in the middle of the support base (6), and the screw (8) is connected to the output shafts at both ends of the motor. The screw (8) is rotatably connected to the inside of the support base (6). The clamping block (9) is symmetrically slidably connected to the top of the support base (6). The clamping block (9) is threadedly connected to the corresponding screw (8). The dual-axis motor (7) is electrically connected to the control panel (3).

3. The lithium battery low-temperature performance testing environment simulation chamber according to claim 1, characterized in that, The lifting assembly includes a connecting rod (14), a connecting cylinder (15), and a ball (16). The bottom of the rotating shaft (10) is connected to the connecting rod (14), and an arc-shaped guide groove is machined on the outside of the connecting rod (14). The bottom of the cabin (1) is connected to the connecting cylinder (15), and the connecting rod (14) and the connecting cylinder (15) are movably connected. The ball (16) is connected to one side of the connecting cylinder (15), and the ball (16) is slidably connected to the arc-shaped guide groove.

4. The lithium battery low-temperature performance testing environment simulation chamber according to claim 1, characterized in that, It also includes a connecting pipe (17), a support frame (18), a venting component (19), a spring (20), and a sealing ring (21). The upper left side of the cabin (1) is connected to and communicates with the connecting pipe (17). The right side of the connecting pipe (17) is connected to the support frame (18). The venting component (19) is slidably connected on the support frame (18). The spring (20) is connected between the venting component (19) and the support frame (18). The right side of the connecting pipe (17) is connected to the sealing ring (21). Under normal conditions, the venting component (19) is tightly fitted with the sealing ring (21) to achieve a sealed connection.

5. The lithium battery low-temperature performance testing environment simulation chamber according to claim 1, characterized in that, It also includes casters (2), and casters (2) are installed at the four corners of the bottom of the cabin (1).

6. The lithium battery low-temperature performance testing environment simulation chamber according to claim 1, characterized in that, It also includes a transparent window (5), and the door panel (4) is connected to the transparent window (5).

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