A lithium battery charging and discharging detection device and detection process

Abstract

The present invention discloses a lithium battery charge and discharge detection device and a detection process. Through an automated pressing assembly and a precisely controlled probe assembly, the present invention can ensure the precise docking of the probe with the battery electrode, avoid human operation errors, and ensure the consistency and reliability of the test data. Secondly, the design uses magnetic fluid and annular sealing airbags to provide a gentle and efficient cleaning method. The magnetic fluid is accurately guided by a magnetic field controlled by an electromagnet to achieve comprehensive and detailed cleaning of the probe, avoiding physical damage to the probe that may be caused in traditional cleaning. The advantages are more obvious when processing high-density and fine probes. The application of the annular sealing airbag ensures the sealing during the cleaning process and the recycling of the cleaning fluid, further improving the cleaning efficiency and environmental protection, not only extending the service life of the probe, but also maintaining the accuracy of data collection, and significantly improving the maintenance efficiency and reliability of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of charge and discharge detection equipment, and more specifically, to a lithium battery charge and discharge detection equipment and a detection process. Background Art

[0002] As a highly efficient energy storage device, lithium batteries are widely used in various portable electronic devices, electric vehicles and renewable energy storage systems. The performance, safety and life of lithium batteries directly affect the efficiency and reliability of these devices. In order to ensure that the performance and safety of lithium batteries meet the optimal standards, accurate charge and discharge tests are required, which can not only evaluate the capacity and discharge curve of the battery, but also detect the performance changes of the battery under different charge and discharge cycles, making lithium battery charge and discharge detection equipment extremely important.

[0003] Although existing lithium battery testing systems are able to provide accurate measurements of a variety of battery performance parameters, there are still significant challenges in the maintenance and cleaning of probes. Traditional cleaning methods mainly rely on manual cleaning, which is not only inefficient but may also cause probe damage due to improper operation, especially when dealing with complex probes with multiple tiny, precision probes. In addition, manual cleaning methods make it difficult to completely remove all contaminants on the probes, such as dust and chemical residues, which can affect the accuracy and repeatability of test results.

[0004] Mechanical cleaning equipment that is manually operated usually requires the operator to directly intervene in the cleaning process, but often damages sensitive probes due to its rigid cleaning method. The strong scrubbing or brushing action of mechanical cleaning may cause probe bending, breaking or other forms of physical damage, especially when the probes are densely installed or the design is relatively delicate. This risk is particularly prominent. In addition, mechanical cleaning is often difficult to adapt to the specific needs of probes of different shapes and sizes, resulting in incomplete cleaning or excessive cleaning, which affects the long-term use and maintenance costs of the equipment.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a lithium battery charge and discharge detection device and detection process. Summary of the invention

[0006] The purpose of the present invention is to provide a lithium battery charge and discharge detection device and detection process to solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0008] A lithium battery charge and discharge detection device, comprising: a charge and discharge detection device body, a probe mounting plate, a pressing assembly, a probe assembly and a driving assembly, wherein a pair of mutually symmetrical cylinders are mounted on the charge and discharge detection device body, and a tray is mounted in the middle of the charge and discharge detection device body, and a lithium battery is arranged on the tray; the probe mounting plates are arranged as a pair, and a pair of the probe mounting plates are mounted on the charge and discharge detection device body, and a plurality of probe assemblies are arranged on the probe mounting plate; the pressing assemblies are arranged as a pair, and a pair of the pressing assemblies are symmetrically arranged about the central axis of the charge and discharge detection device body, and the pressing assembly comprises: a pressing frame: constituting the main frame of the pressing assembly for supporting and fixing; a pressing power source: a cylinder, driving a pressing transmission mechanism to perform pressing and separation actions; a pressing transmission mechanism: connecting the cylinder and the probe assembly, and converting the linear power of the cylinder into the pressing and retracting actions of the probe assembly; the pressing transmission mechanism comprises: a slider: mounted on a guide rail, capable of linear movement along the guide rail and connected to the probe assembly; a guide rail: fixed on the pressing frame, providing a smooth moving path for the slider;

[0009] Connecting rod: one end is connected to the slider, and the other end is connected to the probe assembly and transmits the pressing force; the probe assembly is used to realize the charge and discharge detection of the lithium battery; the driving assembly includes a fixed plate, which is fixedly connected to the bottom end of the probe mounting plate, and a driving plate is arranged on one side of the fixed plate, and a plurality of evenly distributed cleaning components are arranged on the driving plate, and the cleaning component is used to realize the cleaning of the probe assembly.

[0010] As a further improvement of the present invention, the probe assembly includes a probe, a spring is installed around the probe, and a plurality of evenly distributed probes are installed at one end of the probe. A sleeve is provided at one end of the probe, and the probe is slidably connected to the sleeve.

[0011] As a further improvement of the present invention, the sleeve is fixedly connected to a probe clamping block near one end of the probe, and the probe clamping block is arranged at the outer surrounding of the probe. The probe and one end of the spring are fixedly connected to a feedback block, and the feedback block is slidably connected to the sleeve. A pressure sensor is installed in the feedback block, and an electric push rod is installed on the inner wall of the sleeve. The output end of the electric push rod is fixedly connected to the feedback block, and the electric push rod is electrically connected to the pressure sensor.

[0012] As a further improvement of the present invention, a card plate is installed on the top of the probe mounting plate, and a card plate chamfer and a card plate arc are opened on the card plate. The card plate chamfer matches the probe positioning block, and a support column is installed at one end of the probe mounting plate.

[0013] As a further improvement of the present invention, an adjusting electric push rod is installed at one end of the fixed plate, and the output end of the adjusting electric push rod is fixedly connected to the driving plate, and one end of the driving plate is fixedly connected to a servo motor, and the output end of the servo motor is fixedly connected to a reciprocating screw rod, and one end of the reciprocating screw rod is rotatably connected to the inner wall of the driving plate, and a plurality of evenly distributed screw sleeves matching the number of cleaning components are installed outside the reciprocating screw rod, and one end of the screw sleeve is fixedly connected to a moving block.

[0014] As a further improvement of the present invention, a pair of symmetrical connecting rods are fixedly connected to the top of the moving block, and the cleaning assembly includes a cleaning frame, the bottom of the cleaning frame is fixedly connected to a pair of connecting rods, and a pair of symmetrical electromagnets are fixedly connected at both ends of the cleaning frame.

[0015] As a further improvement of the present invention, a conveying hose and an output hose are respectively installed at the upper and lower ends of the cleaning frame, the conveying hose includes a cleaning hose and an inflation hose, one end of the cleaning hose is connected to a cleaning box and a drying box, and the cleaning hose is communicated with the cleaning frame, a drying fan is installed in the drying box, cleaning liquid and a diaphragm pump are provided in the cleaning box, the cleaning liquid consists of a magnetic fluid and a cleaning base liquid, one end of the inflation hose is connected to an inflation pump, an annular sealing airbag is installed in the cleaning frame, and the inflation hose is communicated with the annular sealing airbag.

[0016] As a further improvement of the present invention, the output hose includes an adjusting block, an electric valve is installed in the adjusting block, and a collecting hose and a drying hose connected to the adjusting block are installed at the bottom end of the adjusting block, one end of the collecting hose is connected to a recovery box, and one end of the drying hose is connected to a discharge pipe.

[0017] As a further improvement of the present invention, a plurality of evenly distributed friction balls are installed in the cleaning frame, the friction balls are staggered with the plurality of probes arranged on the probe, and the material of the friction balls is set to be polytetrafluoroethylene.

[0018] As a further improvement of the present invention, the detection process of the lithium battery charge and discharge detection equipment includes the following steps:

[0019] S1: Battery positioning and installation: The operator places the lithium battery on the tray in the main body of the equipment, ensuring that the electrodes of the lithium battery are accurately aligned with the probe assembly to provide an accurate physical contact basis for the subsequent test.

[0020] S2: Precise docking of probes: Activate the cylinder in the pressing assembly to drive the pressing transmission mechanism, including the slider and the connecting rod, to push the probe assembly to move precisely toward the electrode of the lithium battery. By finely controlling the pressing power, ensure that the probe contacts the battery electrode gently and stably to prevent damage to the electrode or probe.

[0021] S3: Start the charge and discharge test sequence: After the probe successfully contacts the battery electrode, the system automatically starts the charge or discharge test program, which transmits a certain amount of current to the lithium battery through the probe assembly and monitors the battery response in real time, such as voltage and current changes.

[0022] S4: Data collection and real-time analysis: During the charging and discharging process, various electrical parameters of the lithium battery, such as voltage, current, temperature, etc., are collected in real time and transmitted to the main control system through the probe installation board to evaluate the battery performance and record the results for subsequent analysis.

[0023] S5: End of test and probe evacuation: After the test is completed, the system instructs the cylinder to operate in reverse, and the probe assembly is smoothly evacuated from the battery electrode to avoid any physical damage to the battery or the probe. Then, the tray removes the battery and prepares for the next battery.

[0024] S6: Probe cleaning and maintenance: When part of the test cycle or when the demand is triggered, the cleaning component is activated, the adjustment electric push rod on the fixed plate controls the cleaning frame to move above the probe assembly, and the annular sealing airbag ensures a sealed environment. Then the cleaning and drying process is started to completely remove the contaminants on the probe.

[0025] S7: Verification and feedback of cleaning effect: After cleaning, the built-in magnetic field sensor is used to check the cleanliness of the probe. If an abnormal magnetic field or other indicators are detected, the system will prompt you to clean again or make maintenance adjustments. This step ensures that the probe is in the best condition before each test, ensuring the reliability and accuracy of the test results.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] This solution uses automated pressing components and precision-controlled probe components to ensure precise docking of the probe with the battery electrode, avoiding human operating errors and ensuring the consistency and reliability of the test data. Secondly, the design uses magnetic fluid and annular sealing airbags to provide a gentle and efficient cleaning method. The magnetic fluid is precisely guided by the magnetic field controlled by the electromagnet to achieve comprehensive and detailed cleaning of the probe, avoiding physical damage to the probe that may be caused by traditional cleaning. The advantages are particularly obvious when dealing with high-density and fine probes. The application of annular sealing airbags ensures sealing during the cleaning process and recycling of cleaning fluid, further improving cleaning efficiency and environmental protection, which not only extends the service life of the probe, but also maintains the accuracy of data collection, significantly improving the maintenance efficiency and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2It is a schematic diagram of the three-dimensional structure of the tray and the lithium battery of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the pressing assembly of the present invention;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the probe mounting plate of the present invention;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the card board of the present invention;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the probe assembly of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the driving component of the present invention;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention;

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cleaning frame of the present invention.

[0037] Description of the numbers in the figure:

[0038] 1. The main body of the charge and discharge detection equipment; 2. The pressing assembly; 3. The probe mounting plate; 4. The probe assembly; 5. The driving assembly; 6. The cleaning assembly; 11. The cylinder; 12. The tray; 13. The lithium battery; 31. The card board; 32. The card board chamfer; 33. The card board arc; 34. The support column; 41. The probe; 42. The spring; 43. The feedback block; 44. The probe positioning block; 45. The sleeve; 51. The fixing plate; 52. The driving plate; 53. The moving block; 61. The cleaning frame; 62. The conveying hose; 63. The output hose; 64. The electromagnet; 65. The friction ball; 66. The annular sealing airbag. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0040] Example

[0041] See also Figure 1-9A lithium battery charge and discharge detection device, comprising: a charge and discharge detection device body 1, a probe mounting plate 3, a pressing assembly 2, a probe assembly 4 and a driving assembly 5, a pair of mutually symmetrical cylinders 11 are installed on the charge and discharge detection device body 1, and a tray 12 is installed in the middle of the charge and discharge detection device body 1, and a lithium battery 13 is arranged on the tray 12; the probe mounting plates 3 are arranged as a pair, a pair of probe mounting plates 3 are installed on the charge and discharge detection device body 1, and a plurality of probe assemblies 4 are arranged on the probe mounting plate 3; the pressing assembly 2 is arranged as a pair, and a pair of pressing assemblies 2 are symmetrically arranged about the central axis of the charge and discharge detection device body 1, and the pressing assembly 2 includes: a pressing frame: constituting the main frame of the pressing assembly, for supporting and fixing; a pressing power source: the cylinder 11, driving the pressing transmission mechanism The structure performs pressing and separation actions; pressing transmission mechanism: connecting the cylinder 11 and the probe assembly 4, converting the linear power of the cylinder 11 into the pressing and retracting actions of the probe assembly 4; the pressing transmission mechanism includes: a slider: installed on the guide rail, able to move linearly along the guide rail and connected to the probe assembly 4; a guide rail: fixed on the pressing frame, providing a smooth moving path for the slider; a connecting rod: one end is connected to the slider, and the other end is connected to the probe assembly 4 and transmits the pressing force; the probe assembly 4 is used to realize the charge and discharge detection of the lithium battery 13; the driving assembly 5 includes a fixed plate 51, the fixed plate 51 is fixedly connected to the bottom end of the probe mounting plate 3, a driving plate 52 is arranged on one side of the fixed plate 51, and a plurality of evenly distributed cleaning components 6 are arranged on the driving plate 52, and the cleaning component 6 is used to realize the cleaning of the probe assembly 4.

[0042] Among them, through the automated pressing assembly 2 and the precisely controlled probe assembly 4, the equipment can ensure the precise docking of the probe with the battery electrode, avoid human operation errors, and ensure the consistency and reliability of the test data. Secondly, the design uses magnetic fluid and annular sealing airbags 66 to provide a gentle and efficient cleaning method. The magnetic fluid is precisely guided by the magnetic field controlled by the electromagnet 64 to achieve comprehensive and detailed cleaning of the probe 41, avoiding physical damage to the probe that may be caused in traditional cleaning. The advantages are more obvious when dealing with high-density and fine probes. The application of the annular sealing airbag 66 ensures the sealing and recycling of the cleaning fluid during the cleaning process, further improving the cleaning efficiency and environmental protection, not only extending the service life of the probe, but also maintaining the accuracy of data collection, significantly improving the maintenance efficiency and reliability of the equipment.

[0043] The probe assembly 4 includes a probe 41 , a spring 42 is installed around the probe 41 , and a plurality of evenly distributed probes are installed at one end of the probe 41 . A sleeve 45 is provided at one end of the probe 41 , and the probe 41 is slidably connected to the sleeve 45 .

[0044] A probe positioning block 44 is fixedly connected to one end of the sleeve 45 close to the probe 41, and the probe positioning block 44 is arranged at the outer surrounding of the probe 41. A feedback block 43 is fixedly connected to one end of the probe 41 and the spring 42. The feedback block 43 is slidably connected to the sleeve 45. A pressure sensor is installed in the feedback block 43. An electric push rod is installed on the inner wall of the sleeve 45. The output end of the electric push rod is fixedly connected to the feedback block 43, and the electric push rod is electrically connected to the pressure sensor.

[0045] A clamping plate 31 is installed at the top of the probe mounting plate 3 . A clamping plate chamfer 32 and a clamping plate arc 33 are provided on the clamping plate 31 . The clamping plate chamfer 32 matches the probe clamping block 44 . A support column 34 is installed at one end of the probe mounting plate 3 .

[0046] Among them, the probe assembly 4 is placed on the probe mounting plate 3, and fixed with screws using a clamping plate 31. The probe clamping block 44 is adjusted to align with the clamping slot on the clamping plate 31, and the clamping plate 31 is pushed to lock the probe assembly 4, which is then locked and tightened in sequence by countersunk screws to ensure the stability and precise alignment of the probe assembly 4. This installation method ensures the rapid positioning and stability of the probe assembly 4, reduces the complexity of operation, and improves the reliability of the equipment and the convenience of maintenance.

[0047] By loosening the screws on the card board 31 without completely removing it, the card board 31 can be quickly adjusted or replaced to adjust the number and spacing of probes, supporting rapid response to different test requirements, adding or reducing the probe assembly 4, and re-fixing the probe assembly 4, providing great flexibility and adjustment speed, enabling the equipment to quickly adapt to different types of battery tests, greatly reducing equipment downtime and improving production efficiency.

[0048] The probe mounting plate 3 is made of an aluminum mold, combined with a finely designed card plate 31, wherein the card plate 31 is designed to include a card plate chamfer 32 for easy installation and a card plate arc 33 for compatibility with probes of multiple sizes. In addition, the combined use of the probe mounting plate 3 and the card plate 31 reduces the use of screws, and the support column 34 enhances the structural stability, optimizes the mechanical strength and durability of the component, reduces the wear caused by frequent replacement or adjustment of the probe, and improves the stability and operating efficiency of the entire machine.

[0049] An adjusting electric push rod is installed at one end of the fixed plate 51, and the output end of the adjusting electric push rod is fixedly connected to the driving plate 52. A servo motor is fixedly connected to one end of the driving plate 52, and a reciprocating screw rod is fixedly connected to the output end of the servo motor. One end of the reciprocating screw rod is rotatably connected to the inner wall of the driving plate 52. A plurality of evenly distributed screw sleeves matching the number of the cleaning components 6 are installed outside the reciprocating screw rod, and a moving block 53 is fixedly connected to one end of the screw sleeve.

[0050] A pair of symmetrical connecting rods are fixedly connected to the top of the moving block 53 . The cleaning assembly 6 includes a cleaning frame 61 . The bottom of the cleaning frame 61 is fixedly connected to the pair of connecting rods. A pair of symmetrical electromagnets 64 are fixedly connected to both ends of the cleaning frame 61 .

[0051] A conveying hose 62 and an output hose 63 are respectively installed at the upper and lower ends of the cleaning frame 61. The conveying hose 62 includes a cleaning hose and an inflation hose. One end of the cleaning hose is connected to a cleaning box and a drying box, and the cleaning hose is communicated with the cleaning frame 61. A drying fan is installed in the drying box. A cleaning liquid and a diaphragm pump are provided in the cleaning box. The cleaning liquid consists of a magnetic fluid and a cleaning base liquid. One end of the inflation hose is connected to an inflation pump. An annular sealing airbag 66 is installed in the cleaning frame 61, and the inflation hose is communicated with the annular sealing airbag 66.

[0052] The output hose 63 includes a regulating block, an electric valve is installed in the regulating block, and a collecting hose and a drying hose connected to the regulating block are installed at the bottom of the regulating block, one end of the collecting hose is connected to a recovery box, and one end of the drying hose is connected to a discharge pipe.

[0053] A plurality of evenly distributed friction balls 65 are installed in the cleaning frame 61 . The friction balls 65 and the plurality of probes arranged on the probe 41 are staggered in distribution, and the material of the friction balls 65 is set to be polytetrafluoroethylene.

[0054] Among them, the operation of charge and discharge detection is mainly realized through the probe assembly 4. The probe directly contacts the electrode of the lithium battery 13 to perform necessary current transmission and voltage measurement. The operator correctly places the lithium battery 13 on the tray 12 in the device body 1 to ensure that the battery electrodes match the corresponding positions of the probe assembly 4. When the device is started, the cylinder 11 of the pressing assembly 2 is activated to push the pressing transmission mechanism, including the slider and the connecting rod, so that the probe assembly 4 moves toward the electrode of the lithium battery 13 and finally contacts. During this process, the probe head 41 provides the necessary pressure through its spring 42 to ensure good electrical contact.

[0055] After the probe head 41 contacts the battery electrode, the electrical connection of the probe is activated and begins to transmit current for charging test or discharging test. During the charging and discharging process, the device collects the voltage, current and other important parameters of the battery through the probe assembly 4. These data are transmitted to the main control system through the probe mounting plate 3 for analysis. After the test is completed, the cylinder 11 is reversely activated to separate the probe assembly 4 from the battery electrode, allowing the battery to be removed or the next round of testing to be carried out.

[0056] When during the detection process, the probe on the probe 41 contacts the lithium battery 13 and causes abnormal pressure, the pressure will be fed back to the pressure sensor in 43. By setting the pressure sensor in a specific threshold environment, when the pressure sensor data is large, the probe 41 contacts the lithium battery 13 and causes a larger pressure. When the pressure sensor data is small, the probe 41 contacts the lithium battery 13 and causes a smaller pressure. Both can be adjusted by starting the electric push rod to be within a certain threshold range, thereby ensuring the accuracy of the detection and the safety of the probe 41.

[0057] When it is necessary to clean the multiple probes 41 on the probe, since the multiple probe assemblies 4 and the multiple cleaning assemblies 6 are arranged on the same horizontal line, the adjusting electric push rod installed on the fixed plate 51 is first started to drive the driving plate 52 to move to the outside of the multiple probe assemblies 4. At this time, the servo motor on the driving plate 52 is started again, so that the servo motor drives the reciprocating screw rod to rotate, thereby driving the multiple moving blocks 53 to move to the side close to the probe assembly 4, so that the cleaning frame 61 in the cleaning assembly 6 coincides with the center point of the probe 41, and then the adjusting electric push rod is started again, so that the cleaning frame 61 is sleeved on the probe 41. At the outer enclosure, the power supply of the entire detection equipment is disconnected, and the air pump connected to one end of the inflation hose is started. By starting the air pump, the annular sealing airbag 66 is inflated and abuts against the outer wall of the probe 41, thereby maintaining its sealing. After completion, a pair of electromagnets 64 and the diaphragm pump power switch set in the cleaning box are started again, so that the diaphragm pump conveys the cleaning liquid into the closed environment formed by the cleaning frame 61 and the probe 41, and by controlling the conveying frequency of the diaphragm pump, it changes periodically. The diaphragm pump is suitable for fluids with high viscosity and containing solid particles, and can prevent magnetic particles in the magnetic fluid from damaging the internal structure of the pump.

[0058] The cleaning liquid is composed of a cleaning base liquid and a magnetic fluid. When a pair of electromagnets 64 are turned on, the magnetic fluid of the cleaning liquid can generate an attraction force, so that the entire cleaning liquid can generate a certain controllable friction force on the probe 41 on the probe, which can avoid large physical friction contact and have a certain flexibility of cleaning, reducing the mechanical wear of the probe 41, so that the cleaning base liquid can better remove the dust and oil stains on the probe 41 on the probe. At the same time, through the periodic change of the delivery frequency of the diaphragm pump, it can drive the multiple annular sealing airbags 66 in the cleaning frame 61, so that the friction between the annular sealing airbags 66 and the recessed part of the probe 41 can better achieve a flexible cleaning effect, while maintaining its cleaning efficiency, it will not cause damage to the probe 41. At the same time, by setting the material of the friction ball 65 to be polytetrafluoroethylene material, the material has excellent chemical stability and hardly reacts with any chemical substances, thereby maintaining its service life. At the same time, if the friction ball 65 has a small friction force due to the performance of the material and is difficult to achieve a cleaning effect, friction patterns can also be engraved on its surface to achieve a cleaning effect.

[0059] By using a cleaning liquid composed of a magnetic fluid and a cleaning base liquid, and cooperating with the activation of the electromagnet 64, the dynamics of the magnetic fluid in the cleaning liquid can be accurately controlled, thereby applying a gentle and uniform friction force to the probe 41 on the probe, effectively avoiding excessive friction and damage to the probe 41 that may be caused by traditional mechanical cleaning. The gravitational force of the electromagnet ensures that the magnetic fluid maintains effective contact during the cleaning process without directly applying a large physical pressure on the surface of the probe 41. In addition, the periodic delivery changes of the diaphragm pump make the annular sealing airbag 66 in the cleaning frame 61 gently contact with the probe 41, further improving the flexibility and efficiency of cleaning. The use of a friction ball 65 made of polytetrafluoroethylene increases the chemical stability and durability of the system. The special friction texture design on its surface also enhances the thoroughness of cleaning, ensuring that the probe 41 is effectively and safely cleaned from dust and oil stains, thereby achieving an efficient and protective cleaning effect without damaging the probe 41.

[0060] The design of the electromagnet 64 embodies a high degree of adaptability and precise control, and its magnetic strength can be adjusted according to the cleaning requirements. This adjustable feature enables the electromagnet to provide appropriate magnetic force according to different probes 41 and the degree of contamination, ensuring that the cleaning process is both effective and gentle, and preventing excessive magnetic force from causing unnecessary mechanical pressure or damage to the probe 41. In addition, when the device is not in a cleaning state, the electromagnet can be completely powered off to eliminate its magnetic field, thereby ensuring that there will be no magnetic field interference with the normal operation of the device, which not only improves the flexibility of the device, but also ensures the safety and stability of the device in non-cleaning mode, making the entire system more reliable, and able to provide precise cleaning when needed, and remain non-interfering with the operation of the device when not needed.

[0061] Subsequently, by controlling the electric valve of the regulating block in the output hose 63, the cleaning liquid can enter the recovery box through the collection hose, and the magnetic fluid can be recycled through the recovery box, which can be achieved by magnetic separation or centrifugal separation.

[0062] Magnetic separation concentrates the waste liquid containing magnetic fluid in a container and arranges one or more high-strength magnets around the container to create a magnetic field strength sufficient to attract the magnetic particles. The magnetic particles will be attracted by the magnets and can then be collected mechanically. The remaining liquid can be further cleaned by filtration or sedimentation to remove any remaining magnetic particles.

[0063] The centrifugal separation method places the cleaning liquid containing magnetic fluid into the tube of the centrifuge, starts the centrifuge, and rotates at high speed so that the magnetic particles are forced to move to the bottom of the tube due to their higher density. After centrifugation, the solid particles and liquid are separated into layers, the particles are deposited at the bottom, and the upper layer is a cleaner liquid. Subsequently, the magnetic particles at the bottom are carefully removed, and the liquid on the upper layer is collected for further processing or disposal.

[0064] After the cleaning is completed, the drying fan in the drying box can be started to dry the cleaned probe 41, so as to facilitate the subsequent work.

[0065] If you want to more accurately monitor and verify the removal of the magnetic fluid during the cleaning process, you can install a magnetic field sensor, such as a Hall effect sensor, near the cleaning frame 61 or the drive board 52. It can detect the strength and direction of the magnetic field around it to ensure that it can approach the probe 41 part of the probe. The sensor is placed in a position that can cover all probes 41 and can remain stable during the cleaning and detection cycle. If the detected magnetic field strength is abnormal, it may indicate that the magnetic fluid has not been completely removed. You can choose to install it according to the actual situation.

[0066] The testing process of lithium battery charging and discharging testing equipment includes the following steps:

[0067] S1: Battery positioning and installation: The operator places the lithium battery 13 on the tray 12 in the device body 1, ensuring that the electrodes of the lithium battery are accurately aligned with the probe assembly 4, providing an accurate physical contact basis for the subsequent test.

[0068] S2: Precise docking of the probe: Activate the cylinder 11 in the pressing assembly 2 to drive the pressing transmission mechanism, including the slider and the connecting rod, to push the probe assembly 4 to move precisely toward the electrode of the lithium battery 13. By finely controlling the pressing power, ensure that the probe contacts the battery electrode gently and stably to prevent damage to the electrode or the probe.

[0069] S3: Start the charge and discharge test sequence: After the probe successfully contacts the battery electrode, the system automatically starts the charge or discharge test program, which transmits a certain amount of current to the lithium battery through the probe assembly 4 and monitors the battery response in real time, such as voltage and current changes.

[0070] S4: Data collection and real-time analysis: During the charging and discharging process, various electrical parameters of the lithium battery, such as voltage, current, temperature, etc., are collected in real time and transmitted to the main control system through the probe mounting board 3 to evaluate the battery performance and record the results for subsequent analysis.

[0071] S5: End of test and evacuation of probe: After the test is completed, the system instructs the cylinder 11 to operate in reverse, and the probe assembly 4 is smoothly evacuated from the battery electrode to avoid any physical damage to the battery or the probe. Then, the tray 12 removes the battery and prepares for the next battery.

[0072] S6: Probe cleaning and maintenance: When part of the test cycle or when the demand is triggered, the cleaning component 6 is activated, and the adjustment electric push rod on the fixed plate 51 controls the cleaning frame 61 to move above the probe component 4. The annular sealing airbag 66 ensures a sealed environment, and then the cleaning and drying process is started to completely remove the contaminants on the probe.

[0073] S7: Verification and feedback of cleaning effect: After cleaning, the built-in magnetic field sensor is used to check the cleanliness of the probe. If an abnormal magnetic field or other indicators are detected, the system will prompt you to clean again or make maintenance adjustments. This step ensures that the probe is in the best condition before each test, ensuring the reliability and accuracy of the test results.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0075] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A lithium battery charge and discharge detection device, characterized in that: include: A charge and discharge detection device body (1), wherein a pair of mutually symmetrical cylinders (11) are installed on the charge and discharge detection device body (1), and a tray (12) is installed in the middle of the charge and discharge detection device body (1), and a lithium battery (13) is arranged on the tray (12); A probe mounting plate (3), wherein the probe mounting plates (3) are arranged in a pair, and the pair of probe mounting plates (3) are mounted on a charge and discharge detection device body (1), and a plurality of probe assemblies (4) are arranged on the probe mounting plates (3); A pressing assembly (2), wherein the pressing assembly (2) is arranged in a pair, and the pair of pressing assemblies (2) are arranged symmetrically about the central axis of the charge and discharge detection device body (1), and the pressing assembly (2) comprises: Press-fit frame: constitutes the main frame of the press-fit assembly and is used for support and fixing; Pressing power source: the cylinder (11) drives the pressing transmission mechanism to perform pressing and separation actions; A pressing transmission mechanism: connecting the cylinder (11) and the probe assembly (4), converting the linear power of the cylinder (11) into pressing and retracting actions of the probe assembly (4); The pressing transmission mechanism comprises: Slider: mounted on the guide rail, capable of linear movement along the guide rail and connected to the probe assembly (4); Guide rail: fixed on the pressing frame, providing a smooth moving path for the slider; Connecting rod: one end of which is connected to the slider, and the other end of which is connected to the probe assembly (4) and transmits the pressing force; A probe assembly (4), the probe assembly (4) being used to implement charge and discharge detection of a lithium battery (13); A driving assembly (5), wherein the driving assembly (5) comprises a fixing plate (51), wherein the fixing plate (51) is fixedly connected to the bottom end of the probe mounting plate (3), wherein a driving plate (52) is arranged on one side of the fixing plate (51), wherein a plurality of evenly distributed cleaning assemblies (6) are arranged on the driving plate (52), wherein the cleaning assembly (6) comprises a cleaning frame (61), wherein a conveying hose (62) and an output hose (63) are respectively installed at the upper and lower ends of the cleaning frame (61), wherein the conveying hose (62) comprises a cleaning hose and An inflatable hose, one end of the cleaning hose is connected to a cleaning box and a drying box, and the cleaning hose is in communication with the cleaning frame (61), a drying fan is installed in the drying box, a cleaning liquid and a diaphragm pump are arranged in the cleaning box, the cleaning liquid is composed of a magnetic fluid and a cleaning base liquid, one end of the inflatable hose is connected to an inflatable pump, an annular sealing airbag (66) is installed in the cleaning frame (61), the inflatable hose is in communication with the annular sealing airbag (66), and the cleaning component (6) is used to clean the probe component (4).

2. A lithium battery charge and discharge detection device according to claim 1, characterized in that: The probe assembly (4) comprises a probe (41), a spring (42) is mounted on the outside of the probe (41), a plurality of evenly distributed probes are mounted on one end of the probe (41), a sleeve (45) is disposed on one end of the probe (41), and the probe (41) is slidably connected to the sleeve (45).

3. A lithium battery charge and discharge detection device according to claim 2, characterized in that: The sleeve (45) is fixedly connected to a probe positioning block (44) at one end close to the probe (41), and the probe positioning block (44) is arranged at the outer surrounding of the probe (41). The probe (41) and one end of the spring (42) are fixedly connected to a feedback block (43), and the feedback block (43) is slidably connected to the sleeve (45). A pressure sensor is installed in the feedback block (43), and an electric push rod is installed on the inner wall of the sleeve (45). The output end of the electric push rod is fixedly connected to the feedback block (43), and the electric push rod is electrically connected to the pressure sensor.

4. A lithium battery charge and discharge detection device according to claim 1, characterized in that: A clamping plate (31) is mounted on the top of the probe mounting plate (3); a clamping plate chamfer (32) and a clamping plate arc (33) are provided on the clamping plate (31); the clamping plate chamfer (32) matches the probe clamping block (44); and a support column (34) is mounted on one end of the probe mounting plate (3).

5. A lithium battery charge and discharge detection device according to claim 1, characterized in that: An adjusting electric push rod is mounted on one end of the fixed plate (51); the output end of the adjusting electric push rod is fixedly connected to the driving plate (52); one end of the driving plate (52) is fixedly connected to a servo motor; the output end of the servo motor is fixedly connected to a reciprocating screw rod; one end of the reciprocating screw rod is rotatably connected to the inner wall of the driving plate (52); a plurality of evenly distributed screw sleeves matching the number of cleaning components (6) are mounted on the outer periphery of the reciprocating screw rod; one end of the screw sleeve is fixedly connected to a moving block (53).

6. A lithium battery charge and discharge detection device according to claim 5, characterized in that: The top of the moving block (53) is fixedly connected to a pair of mutually symmetrical connecting rods, the bottom of the cleaning frame (61) is fixedly connected to the pair of connecting rods, and both ends of the cleaning frame (61) are fixedly connected to a pair of mutually symmetrical electromagnets (64).

7. A lithium battery charge and discharge detection device according to claim 1, characterized in that: The output hose (63) comprises an adjusting block, an electric valve is installed in the adjusting block, and a collecting hose and a drying hose connected to the adjusting block are installed at the bottom end of the adjusting block, one end of the collecting hose is connected to a recovery box, and one end of the drying hose is connected to a discharge pipe.

8. A lithium battery charge and discharge detection device according to claim 1, characterized in that: A plurality of evenly distributed friction balls (65) are installed in the cleaning frame (61); the friction balls (65) are staggered with the plurality of probes provided on the probe (41); and the friction balls (65) are made of polytetrafluoroethylene.

9. A detection process for a lithium battery charge and discharge detection device as claimed in any one of claims 1 to 8, characterized in that: The detection process of the lithium battery charge and discharge detection equipment The following steps are involved: S1: Battery positioning and installation: The operator places the lithium battery (13) on the tray (12) in the device body (1), ensuring that the electrodes of the lithium battery are precisely aligned with the probe assembly (4) to provide an accurate physical contact basis for the subsequent test. S2: Precise docking of the probe: Activate the cylinder (11) in the pressing assembly (2) to drive the pressing transmission mechanism, including a slider and a connecting rod, to push the probe assembly (4) to move precisely toward the electrode of the lithium battery (13). By finely controlling the pressing force, ensure that the probe contacts the battery electrode gently and stably to prevent damage to the electrode or the probe. S3: Start the charge and discharge test sequence: After the probe successfully contacts the battery electrode, the system automatically starts the charge or discharge test program, which transmits a certain amount of current to the lithium battery through the probe assembly (4) and monitors the battery response in real time. S4: Data collection and real-time analysis: During the charging and discharging process, various electrical parameters of the lithium battery are collected in real time and transmitted to the main control system through the probe mounting plate (3) to evaluate the battery performance and record the results for subsequent analysis. S5: End of test and removal of probe: After the test is completed, the system instructs the cylinder (11) to operate in reverse, and the probe assembly (4) is smoothly removed from the battery electrode to avoid any physical damage to the battery or the probe. Subsequently, the tray (12) removes the battery and prepares for the next battery. S6: Probe cleaning and maintenance: As part of the test cycle or when a need is triggered, the cleaning assembly (6) is activated, and the adjustment electric push rod on the fixed plate (51) controls the cleaning frame (61) to move above the probe assembly (4). The annular sealing airbag (66) ensures a sealed environment, and then the cleaning and drying process is started to completely remove the contaminants on the probe. S7: Verification and feedback of cleaning effect: After cleaning, the built-in magnetic field sensor is used to check the cleanliness of the probe. If an abnormal magnetic field or other indicators are detected, the system will prompt you to clean again or make maintenance adjustments. This step ensures that the probe is in the best condition before each test, ensuring the reliability and accuracy of the test results.

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