Rapid remodeling probe assembly for lithium battery charging and discharging detection

Abstract

The invention discloses a rapid remodeling probe assembly for lithium battery charge and discharge detection, which integrates a probe mounting plate, a pressing assembly, a probe mechanism and an induction driving assembly, and is characterized in that a temperature sensor in the probe mechanism is electrically connected with a linear driver, a first electric push rod and a second electric push rod; the device is allowed to quickly respond when detecting abnormal temperature, emergency intervention is performed through the abnormal protection assembly and the cooling assembly, overheating of the battery is effectively prevented, the cooling efficiency and safety are greatly improved through the design of the cooling assembly, meanwhile, the arc extinction function designed in the abnormal protection assembly is mainly achieved through a hollow structure of a sealed injection push rod, and the service life of the device is prolonged. Nitrogen is quickly released through the control valve, and the arc extinguishing hose directly delivers the nitrogen to an arc generation area to quickly extinguish the arc, so that the safety and reliability of the whole equipment are remarkably improved, the continuity and stability of the battery test process are ensured, and the equipment can efficiently and safely adapt to continuously changing test requirements.

Description

Technical Field

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

[0002] Lithium batteries are widely used in various portable devices and electric vehicles due to their high energy density and long life. In order to ensure the performance and safety of lithium batteries, they need to be subjected to rigorous charge and discharge tests. These tests are designed to evaluate the electrochemical performance, stability, and behavior of the battery under different charge and discharge cycles. The equipment can simulate the charge and discharge process of the battery in actual use and conduct a comprehensive test of its performance, effectively testing and monitoring lithium batteries.

[0003] Although existing lithium battery charge and discharge detection equipment can effectively perform basic battery performance tests, arcing or overheating may occur during battery testing. These conditions can easily damage the battery structure and even cause safety accidents. When encountering abnormal battery conditions, traditional testing equipment has a slow response time and cannot take effective measures in time, resulting in battery damage or performance degradation. In addition, these devices are deficient in flexibility and maintainability, such as complex operations when adjusting probe configurations and handling emergencies, and high maintenance and upgrade costs, which limits their application efficiency and reliability in the rapidly developing battery testing needs.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a quickly replaceable probe assembly for lithium battery charge and discharge detection. Summary of the invention

[0005] The object of the present invention is to provide a quickly replaceable probe assembly for lithium battery charge and discharge detection to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows: A quickly changeable probe assembly for lithium battery charge and discharge detection, comprising: a charge and discharge detection device body, a probe mounting plate, a pressing assembly, a probe mechanism and an induction drive 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 mechanisms are arranged on the probe mounting plates; 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, and used for supporting and fixing; a pressing power source: a cylinder, driving the pressing transmission mechanism to press and separate The pressing and releasing action; the pressing transmission mechanism: connecting the cylinder and the probe mechanism, converting the linear power of the cylinder into the pressing and retracting action of the probe mechanism; 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 mechanism; the 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 mechanism and transmits the pressing force; the probe mechanism, the probe mechanism is used to realize the charging and discharging detection of the lithium battery; the induction drive component includes a linear driver installed on the lower side of the card plate, the output end of the linear driver is fixedly connected to the first electric push rod, the output end of the first electric push rod is fixedly connected to the second electric push rod, the output end of the second electric push rod is installed with an abnormal protection component, and a cooling component is arranged in the abnormal protection component.

[0007] As a further improvement of the present invention, the probe mechanism includes a probe, one end of which is equipped with a plurality of evenly distributed probes and a temperature sensor, and the temperature sensor is electrically connected to the linear drive, the first electric push rod and the second electric push rod.

[0008] As a further improvement of the present invention, a clamping plate is installed on the top of the probe mounting plate, a clamping plate chamfer and a clamping plate arc are provided on the clamping plate, and a support column is installed at one end of the probe mounting plate.

[0009] As a further improvement of the present invention, the abnormal protection component includes an insulating protective cover, one end of the insulating protective cover is fixedly connected to the output end of the second electric push rod, a plurality of evenly distributed first sealing cylinders are inlaid in the insulating protective cover, a sealing injection push rod is slidably connected in the first sealing cylinder, an extrusion spring is fixedly connected to the inner wall of the first sealing cylinder, one end of the extrusion spring is fixedly connected to the sealing injection push rod, the sealing injection push rod is hollow, and an arc extinguishing hose connected to the sealing injection push rod is installed at one end, the arc extinguishing hose is arranged in the middle of the extrusion spring, a conveying ring is installed at the outer end of the insulating protective cover, and a plurality of the arc extinguishing hoses are connected to the conveying ring.

[0010] As a further improvement of the present invention, a gas storage container is installed on the main body of the charge and discharge detection equipment, nitrogen is provided in the gas storage container, and a control valve is installed on the gas storage container. The gas storage container is connected to the conveying ring through a hose, and a current sensor is installed in the insulating protective cover, and the current sensor is electrically connected to the control valve.

[0011] As a further improvement of the present invention, a transmission pipeline connected to the first sealing cylinder is fixedly connected, and one end of each of the transmission pipelines is fixedly connected to a second sealing cylinder connected to the first sealing cylinder. A sealing push rod is slidably connected inside the second sealing cylinder, and a cooling component is movably connected to one end of the sealing push rod.

[0012] As a further improvement of the present invention, the cooling component includes a cooling bag and a cooling block, the cooling bag and the cooling block are connected, the cooling bag is filled with heat transfer oil, a blocking block is fixedly connected to the cooling block, elastic bags are installed at the upper and lower ends of the blocking block, a pair of elastic bags are connected to the inner wall of the cooling block, the cavity formed by the upper elastic bag and the inner wall of the cooling block is filled with coolant, and the cavity formed by the lower elastic bag and the inner wall of the cooling block is filled with cooling particles.

[0013] As a further improvement of the present invention, a movable groove is opened in the blocking block, a sealing spring is fixedly connected to the inner wall of the movable groove, one end of the sealing spring is fixedly connected to a magnetic block, the magnetic block is slidably connected to the movable groove, and a sealing gasket is installed on the outside of the magnetic block, the outer end of the cooling block is fixedly connected to an electromagnet, an emergency temperature sensor is installed on the inner wall of the insulating protective cover, and the emergency temperature sensor is electrically connected to the electromagnet.

[0014] As a further improvement of the present invention, the inner wall of the cooling block is inlaid with a plurality of evenly distributed heat-conducting rods, one end of each of the heat-conducting rods passes through the inner wall of the cooling block and extends into the cooling bag, the material of the coolant is set to water, and the material of the cooling particles is set to saltpeter particles.

[0015] As a further improvement of the present invention, the material of the coolant is set to water, and the material of the cooling particles is set to saltpeter particles.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This scheme effectively increases the internal air pressure by inducing the contact between the multiple sealed injection push rods in the insulating protective sleeve of the driving component and the inner wall of the first sealing tube. This design enables the increased air pressure in the first sealing tube to further squeeze the transmission pipe in the second sealing tube, thereby realizing the orderly transmission of air pressure. Through this air pressure transmission mechanism, the transmission pipe pushes the cooling bag in the cooling component to closely contact the joint area of ​​the lithium battery, thereby significantly improving the heat dissipation efficiency and ensuring that the temperature control of the battery during the test is more accurate and safe.

[0017] (2) This solution uses the induction drive component in the cooling component to operate. Primary heat dissipation is achieved through the natural flow of thermal oil in the cooling bag, which can quickly absorb and disperse the heat generated by the battery to maintain the stability of battery operation. For higher temperatures or emergency situations, the emergency temperature sensor is activated to cause the electromagnet to work, pushing the magnetic block to move, prompting the coolant and cooling particles to be fully mixed, which not only enhances the cooling effect, but also stabilizes the battery temperature more quickly and prevents potential risks caused by overheating.

[0018] (3) The arc extinguishing function designed in the abnormal protection component of the inductive drive component is mainly realized through the sealed injection push rod hollow structure. These structures allow nitrogen to be directly delivered to the key joint area of ​​the battery. Nitrogen is an inert gas. Once the current sensor detects an arc phenomenon, nitrogen is quickly released through the control valve. The arc extinguishing hose delivers nitrogen directly to the arc occurrence area, quickly extinguishing the arc and effectively preventing further damage and potential fire risks caused by the arc. This fast response design significantly improves the safety and reliability of the overall equipment and ensures the continuity and stability of the battery testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the tray and lithium battery of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the pressing assembly of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the probe mounting plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the card board of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the induction drive assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the abnormal protection component and the cooling component of the present invention; Figure 8 It is a schematic diagram of the side cross-sectional structure of the abnormal protection component and the cooling component of the present invention; Fig. 9For the present invention Figure 8 Schematic diagram of the structure at point A in the middle.

[0020] Description of the numbers in the figure: 1. The main body of the charge and discharge detection equipment; 2. The pressing assembly; 3. The probe mounting plate; 4. The probe mechanism; 5. The induction drive assembly; 6. The abnormal protection assembly; 7. The cooling 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; 51. The first electric push rod; 52. The second electric push rod; 61. The insulating protective sleeve; 62. The sealed injection push rod; 63. The first sealing cylinder; 64. The extrusion spring; 65. The arc extinguishing hose; 66. The conveying ring; 67. The transmission pipeline; 68. The second sealing cylinder; 69. The sealed push rod; 71. The cooling bag; 72. The cooling block; 73. The blocking block; 74. The moving groove; 75. The sealing spring; 76. The magnetic block; 77. The electromagnet; 78. The heat conducting rod. DETAILED DESCRIPTION

[0021] 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.

[0022] Example: See also Figure 1-Figure 5A quickly replaceable probe assembly for lithium battery charge and discharge detection, comprising: a charge and discharge detection device body 1, a probe mounting plate 3, a pressing assembly 2, a probe mechanism 4 and an induction drive 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 mechanisms 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 to press and separate action; pressing transmission mechanism: connecting the cylinder 11 and the probe mechanism 4, converting the linear power of the cylinder 11 into the pressing and retracting action of the probe mechanism 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 mechanism 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 mechanism 4 and transmits the pressing force; the probe mechanism 4, the probe mechanism 4 is used to realize the charge and discharge detection of the lithium battery 13; the induction drive component 5 includes a linear driver installed on the lower side of the card plate 31, and the output end of the linear driver is fixedly connected to the first electric push rod 51, the output end of the first electric push rod 51 is fixedly connected to the second electric push rod 52, and the output end of the second electric push rod 52 is installed with an abnormal protection component 6, and a cooling component 7 is arranged in the abnormal protection component 6.

[0023] Among them, by integrating the probe mounting plate 3, the pressing component 2, the probe mechanism 4 and the inductive drive component 5, the device realizes the accurate measurement and real-time monitoring of the performance of the lithium battery 13. The temperature sensor in the probe mechanism 4 is electrically connected with the linear drive, the first electric push rod 51 and the second electric push rod 52, allowing the device to respond quickly when abnormal temperature is detected, and emergency intervention is performed through the abnormal protection component 6 and the cooling component 7 to effectively prevent the battery from overheating. The design of the cooling component 7, including the application of thermal oil, coolant and cooling particles in the cooling capsule 71 and the cooling block 72, plus the pressure of the elastic capsule Force regulation greatly improves the heat dissipation efficiency and safety. At the same time, the arc extinguishing function designed in the abnormal protection component 6 is mainly realized by the hollow structure of the sealed injection push rod 62. These structures allow nitrogen to be directly delivered to the key joint area of ​​the battery, and the nitrogen is quickly released by controlling the valve. The arc extinguishing hose 65 delivers nitrogen directly to the arc occurrence area, quickly extinguishes the arc, and effectively prevents further damage and potential fire risks caused by the arc, which significantly improves the safety and reliability of the overall equipment, ensures the continuity and stability of the battery testing process, and enables the equipment to efficiently and safely adapt to changing testing needs.

[0024] A clamping plate 31 is installed at the top of the probe installation plate 3 . A clamping plate chamfer 32 and a clamping plate arc 33 are provided on the clamping plate 31 . A support column 34 is installed at one end of the probe installation plate 3 .

[0025] Among them, the probe mechanism 4 is placed on the probe mounting plate 3, and is fixed with screws using a clamping plate 31. The probe clamping block is adjusted to align with the clamping slot on the clamping plate 31, and the clamping plate 31 is pushed to lock the probe mechanism 4, which is then locked and tightened in sequence by countersunk screws to ensure the stability and precise alignment of the probe mechanism 4. This installation method ensures the rapid positioning and stability of the probe mechanism 4, reduces the complexity of operation, and at the same time improves the reliability of the equipment and the convenience of maintenance.

[0026] 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 testing requirements, increasing or decreasing the probe mechanism 4, and re-fixing the probe mechanism 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.

[0027] The probe mechanism 4 includes a probe, and a plurality of evenly distributed probes and a temperature sensor are mounted on one end of the probe. The temperature sensor is electrically connected to the linear drive, the first electric push rod 51 and the second electric push rod 52 .

[0028] See also Figure 6-Figure 9 A transmission pipe 67 is fixedly connected to the first sealing cylinder 63, and one end of the multiple transmission pipes 67 is fixedly connected to a second sealing cylinder 68 connected to the first sealing cylinder 63. A sealing push rod 69 is slidably connected in the second sealing cylinder 68, and one end of the sealing push rod 69 is movably connected to a cooling component 7.

[0029] The cooling component 7 includes a cooling capsule 71 and a cooling block 72. The cooling capsule 71 and the cooling block 72 are connected. The cooling capsule 71 is filled with heat transfer oil. A blocking block 73 is fixedly connected to the cooling block 72. Elastic capsules are installed at the upper and lower ends of the blocking block 73. A pair of elastic capsules are connected to the inner wall of the cooling block 72. The cavity formed by the upper elastic capsule and the inner wall of the cooling block 72 is filled with coolant, and the cavity formed by the lower elastic capsule and the inner wall of the cooling block 72 is filled with cooling particles.

[0030] A movable groove 74 is provided in the blocking block 73, and a sealing spring 75 is fixedly connected to the inner wall of the movable groove 74. A magnetic block 76 is fixedly connected to one end of the sealing spring 75. The magnetic block 76 is slidably connected to the movable groove 74, and a sealing gasket is installed on the outer periphery of the magnetic block 76. An electromagnet 77 is fixedly connected to the outer end of the cooling block 72, and an emergency temperature sensor is installed on the inner wall of the insulating protective cover 61, and the emergency temperature sensor is electrically connected to the electromagnet 77.

[0031] The inner wall of the cooling block 72 is inlaid with multiple evenly distributed heat-conducting rods 78, one end of each of which passes through the inner wall of the cooling block 72 and extends into the cooling bag 71. The material of the coolant is set to water, and the material of the cooling particles is set to saltpeter particles. The material of the coolant is set to water, and the material of the cooling particles is set to saltpeter particles.

[0032] Among them, the probe mechanism 4 includes a plurality of evenly distributed probes and temperature sensors. These probes directly contact the battery for measuring voltage and current, while the temperature sensor monitors the temperature of the battery in real time. These probes are electrically connected to the linear drive, the first electric push rod 51 and the second electric push rod 52. Once a temperature abnormality is detected, these electric mechanisms will respond immediately, first evacuating the probe mechanism 4 with abnormal temperature in the area from the test position, and then starting cooling or safety measures. The evacuation of the probe mechanism 4 from the test position can be completed by the driving mechanism on the device, which belongs to the prior art and will not be repeated here. Subsequently, the abnormal protection component 6 and the cooling component 7 are moved to the area for emergency treatment through the linear drive in cooperation with the first electric push rod 51 and the second electric push rod 52. The linear drive is a driving component composed of a servo motor, a bidirectional screw and a screw sleeve, which also belongs to the prior art and will not be repeated here.

[0033] The cooling component 7 is composed of a first sealing cylinder 63, a transmission pipe 67, a second sealing cylinder 68 and a sealing push rod 69. The cooling component 7 includes a cooling bag 71 and a cooling block 72, wherein the cooling bag is filled with heat transfer oil, and the cooling block is provided with a movable blocking block 73. Elastic bags are installed at the upper and lower ends, the upper elastic bag is filled with coolant (water), and the lower side is filled with cooling particles (saltpeter particles).

[0034] When the temperature sensor of the probe detects abnormal battery temperature, the first electric push rod 51 and the second electric push rod 52 are activated, so that the sealing push rod 69 of the cooling assembly 7 pushes the cooling bag 71 to contact the battery, and the heat transfer oil quickly absorbs and discharges heat through the heat transfer rod 78.

[0035] The multiple sealing injection push rods 62 in the insulating protective sleeve 61 abut against it, thereby increasing the air pressure in the first sealing cylinder 63, so that the air pressure in the first sealing cylinder 63 squeezes the transmission pipe 67 in the second sealing cylinder 68, so that the cooling bag 71 in the cooling component 7 is fully contacted with the joint area on the lithium battery 13 through the movement of the transmission pipe 67, thereby improving its heat dissipation efficiency.

[0036] When the cooling effect is not enough to control the temperature, the emergency temperature sensor triggers the electromagnet 77. The repulsive force exerted by the electromagnet 77 pushes the magnetic block 76 to slide in the movable groove 74, causing the blocking block 73 to move, so that the coolant and the filling cooling particles are fully mixed, thereby enhancing the cooling effect and quickly stabilizing the battery temperature.

[0037] It should be noted that the volume ratio of the coolant (water) to the cooling particles (saltpeter particles) in the cooling component 7 is between 5 and 7 to ensure that the two can be fully mixed, which can not only maximize the heat absorption efficiency but also maintain the fluidity of the mixture so that it can quickly conduct and disperse the heat from the battery.

[0038] At the same time, the elastic bags at the upper and lower ends play a vital role. When the coolant and the cooling particles are mixed, the internal space may decrease due to the change in the volume of the mixture. At this time, the elastic bag will be squeezed. Its design allows the elastic bag to exert pressure on the mixture during the extrusion process to ensure that the mixture can evenly and fully fill the entire internal space of the cooling block 72. By effectively squeezing the mixture, it is ensured that there are no gaps, which can maximize the contact area and accelerate the process of heat transfer from the heat transfer oil to the coolant and cooling particles through the heat transfer rod 78.

[0039] After use, the cooling assembly 7 can be removed from the sealing push rod 69, wherein the cooling block 72 is designed to be detachable, so as to be used for subsequent replenishment of coolant and cooling particles.

[0040] The above method can respond to emergency situations of the battery and quickly intervene through efficient thermal management, thereby greatly enhancing the safety and reliability of battery testing. The rapid responsiveness also helps to reduce equipment downtime and improve the efficiency of handling abnormally high temperatures of the battery during testing. The modularity and adjustability of the entire system also provide great flexibility for batteries of different types and sizes.

[0041] The abnormal protection component 6 includes an insulating protection sleeve 61, one end of which is fixedly connected to the output end of the second electric push rod 52, a plurality of evenly distributed first sealing cylinders 63 are inlaid in the insulating protection sleeve 61, a sealing injection push rod 62 is slidably connected in the first sealing cylinder 63, an extrusion spring 64 is fixedly connected to the inner wall of the first sealing cylinder 63, one end of the extrusion spring 64 is fixedly connected to the sealing injection push rod 62, the sealing injection push rod 62 is hollow, and an arc extinguishing hose 65 connected to the sealing injection push rod 62 is installed at one end, and the arc extinguishing hose 65 is arranged in the middle of the extrusion spring 64, and a conveying ring 66 is installed at the outer end of the insulating protection sleeve 61, and a plurality of arc extinguishing hoses 65 are connected to the conveying ring 66.

[0042] A gas storage container is installed on the main body 1 of the charge and discharge detection equipment. Nitrogen is set in the gas storage container, and a control valve is installed on the gas storage container. The gas storage container is connected to the conveying ring 66 through a hose. A current sensor is installed in the insulating protective cover 61, and the current sensor is electrically connected to the control valve.

[0043] Among them, the abnormal protection component 6 is composed of the following structures: an insulating protective sleeve 61: connected to the second electric push rod 52, providing mechanical protection and electrical insulation for the internal components; a first sealing cylinder 63: a sliding sealing injection push rod 62 is installed inside, which is connected to the push rod through an extrusion spring 64. The push rod is designed to be a hollow structure for transmitting nitrogen; an arc extinguishing hose 65: located in the middle of the extrusion spring, used to guide nitrogen from the push rod to the battery joint area; a conveying ring 66: connecting multiple arc extinguishing hoses 65 to form a complete gas delivery system.

[0044] The gas storage container is filled with nitrogen and is connected to the conveying ring through a control valve. These connections are completed through a hose. The current sensor is installed in the insulating protective cover 61 and is electrically connected to the control valve for detecting current abnormalities and controlling the valve switch.

[0045] When the current sensor detects current anomalies, such as arcing, the control valve is activated to release nitrogen, which is rapidly transported to the joint area of ​​the battery through the delivery ring and arc extinguishing hose 65. The injection of nitrogen effectively suppresses the arc and reduces the risk of overheating and fire.

[0046] By promptly responding to current anomalies and quickly spraying nitrogen to extinguish arcs, the possibility of safety accidents caused by electric arcs is greatly reduced, protecting the safety of batteries and equipment. The use of nitrogen can not only suppress electric arcs, but also act as an inert gas to reduce oxidation of batteries at high temperatures, thereby protecting the chemical stability of the batteries and extending their service life. The design of the insulating protective cover 61 and its internal structure ensures the reliability of the detection and response system, reduces the failure rate and maintenance requirements, and improves the reliability of the overall equipment. The modular design of the system makes maintenance and possible replacement work simple, increasing the flexibility of equipment use and the convenience of maintenance.

[0047] Working principle: The operator places the lithium battery 13 precisely on the tray 12 of the main body 1 of the charge and discharge detection equipment, and uses the positioning system to ensure that the battery is correctly aligned with the probe mechanism 4 in the equipment to ensure the accuracy and repeatability of the test. The equipment power is turned on, and the system performs self-tests, including hardware status checks and software configuration loading. A specific test script is loaded, and the charge and discharge parameters and test limits are set for different types of lithium batteries. In addition, the system checks all safety monitoring devices, such as temperature sensors and current monitors, to ensure that they are in good working condition. The pressing assembly 2 controlled by the cylinder 11 allows the probe mechanism 4 to move smoothly along the guide rail equipped with a slider until the probe contacts the battery surface. The system automatically adjusts the pressure to ensure good contact with the battery but does not cause physical damage to the battery. The system performs a prescribed charging cycle on the battery and monitors the voltage, current and temperature changes of the battery during the charging process in real time. The temperature sensor in the probe mechanism 4 transmits data to the central processing unit in real time to monitor whether overheating occurs. After charging is completed, the system automatically switches to discharge mode. The discharge test helps to evaluate the actual output performance and capacity of the battery. Similarly, the system continuously monitors key parameters to ensure stable discharge and overall performance testing of the battery. After the test is completed, the probe mechanism automatically withdraws, and the system conducts a detailed analysis of the collected data. The analysis results help determine key performance indicators such as the battery's health status, efficiency, capacity decay and expected life. During the test, if any parameter abnormality is detected, such as excessive temperature or a sudden increase in current, the system will immediately initiate abnormal protection measures, the abnormal protection component 6 will be activated, and the cooling component 7 will quickly intervene to stabilize the battery temperature through thermal oil and the cooling system, or when an arc is detected, nitrogen is released through the sealed injection push rod 62 to quickly suppress the arc, effectively avoiding serious safety accidents.

[0048] 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.

[0049] 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 quickly replaceable probe assembly for lithium battery charge and discharge detection, comprising a charge and discharge detection device body (1), a pair of mutually symmetrical cylinders (11) being mounted on the charge and discharge detection device body (1), and a tray (12) being mounted in the middle of the charge and discharge detection device body (1), and a lithium battery (13) being arranged on the tray (12); characterized in that: include: 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 mechanisms (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: a cylinder (11) that drives the pressing transmission mechanism to perform pressing and separation actions; A pressing transmission mechanism: connecting the cylinder (11) and the probe mechanism (4), converting the linear power of the cylinder (11) into a pressing and retracting action of the probe mechanism (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 mechanism (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 mechanism (4) and transmits the pressing force; A probe mechanism (4), the probe mechanism (4) being used to implement charge and discharge detection of a lithium battery (13); An inductive drive component (5), the inductive drive component (5) comprising a linear driver mounted on the lower side of a card plate (31), the output end of the linear driver being fixedly connected to a first electric push rod (51), the output end of the first electric push rod (51) being fixedly connected to a second electric push rod (52), the output end of the second electric push rod (52) being installed with an abnormal protection component (6), and a cooling component (7) being arranged inside the abnormal protection component (6).

2. A quickly replaceable probe assembly for lithium battery charge and discharge detection according to claim 1, characterized in that: The probe mechanism (4) comprises a probe, one end of which is mounted with a plurality of evenly distributed probes and a temperature sensor, the temperature sensor being electrically connected to the linear drive, the first electric push rod (51) and the second electric push rod (52).

3. A quickly replaceable probe assembly for lithium battery charge and discharge detection according to claim 2, 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), and a support column (34) is mounted on one end of the probe mounting plate (3).

4. A quickly changeable probe assembly for lithium battery charge and discharge detection according to claim 1, characterized in that: The abnormal protection component (6) comprises an insulating protective sleeve (61), one end of which is fixedly connected to the output end of the second electric push rod (52), a plurality of evenly distributed first sealing cylinders (63) are embedded in the insulating protective sleeve (61), a sealing injection push rod (62) is slidably connected in the first sealing cylinder (63), an extrusion spring (64) is fixedly connected to the inner wall of the first sealing cylinder (63), one end of the extrusion spring (64) is fixedly connected to the sealing injection push rod (62), the sealing injection push rod (62) is hollow, and an arc extinguishing hose (65) connected to the sealing injection push rod (62) is installed at one end, the arc extinguishing hose (65) is arranged in the middle of the extrusion spring (64), and a conveying ring (66) is installed at the outer end of the insulating protective sleeve (61), and a plurality of the arc extinguishing hoses (65) are connected to the conveying ring (66).

5. A quickly changeable probe assembly for lithium battery charge and discharge detection according to claim 4, characterized in that: A gas storage container is installed on the main body (1) of the charge and discharge detection equipment. Nitrogen is provided in the gas storage container. A control valve is installed on the gas storage container. The gas storage container is connected to the conveying ring (66) via a hose. A current sensor is installed in the insulating protective sleeve (61). The current sensor is electrically connected to the control valve.

6. A quickly changeable probe assembly for lithium battery charge and discharge detection according to claim 4, characterized in that: The first sealing cylinder (63) is fixedly connected to a transmission pipeline (67) in communication with the first sealing cylinder (63); one end of each of the plurality of transmission pipelines (67) is fixedly connected to a second sealing cylinder (68) in communication with the first sealing cylinder (63); a sealing push rod (69) is slidably connected inside the second sealing cylinder (68); one end of the sealing push rod (69) is movably connected to a cooling component (7).

7. A quickly changeable probe assembly for lithium battery charge and discharge detection according to claim 4, characterized in that: The cooling component (7) comprises a cooling capsule (71) and a cooling block (72), wherein the cooling capsule (71) and the cooling block (72) are connected, the cooling capsule (71) is filled with heat transfer oil, a blocking block (73) is fixedly connected to the cooling block (72), elastic capsules are installed at both upper and lower ends of the blocking block (73), a pair of the elastic capsules are connected to the inner wall of the cooling block (72), a cavity formed by the upper elastic capsule and the inner wall of the cooling block (72) is filled with cooling liquid, and a cavity formed by the lower elastic capsule and the inner wall of the cooling block (72) is filled with cooling particles.

8. A quickly replaceable probe assembly for lithium battery charge and discharge detection according to claim 7, characterized in that: A movable groove (74) is provided in the blocking block (73), a sealing spring (75) is fixedly connected to the inner wall of the movable groove (74), one end of the sealing spring (75) is fixedly connected to a magnetic block (76), the magnetic block (76) is slidably connected to the movable groove (74), and a sealing gasket is installed around the outer side of the magnetic block (76), an electromagnet (77) is fixedly connected to the outer end of the cooling block (72), an emergency temperature sensor is installed on the inner wall of the insulating protective sleeve (61), and the emergency temperature sensor is electrically connected to the electromagnet (77).

9. A quickly replaceable probe assembly for lithium battery charge and discharge detection according to claim 8, characterized in that: The inner wall of the cooling block (72) is inlaid with a plurality of evenly distributed heat-conducting rods (78), and one end of each of the plurality of heat-conducting rods (78) penetrates the inner wall of the cooling block (72) and extends into the cooling bag (71).

10. A quickly changeable probe assembly for lithium battery charge and discharge detection according to claim 7, characterized in that: The material of the coolant is set to water, and the material of the cooling particles is set to saltpeter particles.

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