Device for simultaneously evaluating health states of multiple groups of lithium batteries

Abstract

The invention relates to the technical field of battery detection, in particular to a device for simultaneously evaluating health states of multiple groups of lithium batteries, which comprises an evaluation box body, a detection assembly is arranged on the inner wall of the evaluation box body, the detection assembly comprises a detection table located on the inner wall of the evaluation box body, and a plurality of detection boxes are arranged at the top of the detection table. The device comprises a plurality of detection boxes, the outer walls of the plurality of detection boxes are provided with a power transmission box, the outer wall of the power transmission box is provided with a control button, and the outer walls of the plurality of detection boxes are provided with exhaust ports. The movement of the piston accelerates the temperature rise in the box, the exhaust valve fixedly connected with the front end of the second connecting pipe is opened after the temperature sensor monitors that the heat is sufficient, and the piston moves to drive air to enter so as to realize rapid cooling, so that the swelling or explosion of qualified batteries caused by too slow temperature reduction is prevented, and the potential safety hazard is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, and in particular to a device for simultaneously evaluating the health status of multiple groups of lithium batteries. Background Art

[0002] The battery is a new generation of green high-energy battery with excellent performance. It has the characteristics of high voltage, high capacity, low consumption, no memory effect, no pollution, small size, small internal resistance, low self-discharge, and many cycles. It is widely used in pure electric vehicles, hybrid devices, plug-in hybrid vehicles, ships, rail transportation, solar energy, wind power generation systems and many other civil and military fields. Especially with the development of electric vehicles, the requirements for lithium battery performance are getting higher and higher.

[0003] In order to control the quality of lithium batteries leaving the factory, we will test the lithium batteries we produce. One of the important parameters is the high-temperature aging performance of the battery. The current common testing method is to put the battery into a high-temperature aging box and generate high temperature through a heating device to simulate the temperature in actual work. However, the current high-temperature aging box has a simple structure, and the environment in the testing process is static, which cannot simulate the actual working environment. The detection accuracy is not high, and only lithium batteries in a single environment can be simulated and tested, and the results are not accurate enough. Therefore, we propose a device for simultaneously evaluating the health status of multiple groups of lithium batteries. Summary of the invention

[0004] The present invention provides the following technical solution: a device for simultaneously evaluating the health status of multiple groups of lithium batteries, comprising an evaluation box body, the inner wall of the evaluation box body is provided with a detection component, the detection component comprises a detection platform located on the inner wall of the evaluation box body, a plurality of detection boxes are provided on the top of the detection platform, a plurality of the detection boxes are provided with power supply boxes on the outer walls, a control button is provided on the outer wall of the power supply box, a plurality of the detection boxes are provided with exhaust ports on the outer walls, a plurality of the detection boxes are provided with air supply ports on the tops, a hot air blower is provided on the outer walls of the air supply ports, a plurality of the detection boxes are provided with lifting components on the inner walls, and a placement component is provided on the top of the lifting components; The placement component includes a connecting plate located at the top of the lifting component, the outer wall of the connecting plate is fixedly connected to a plurality of protrusions, the inner walls of the plurality of detection boxes are provided with a movable component on a side close to the connecting plate, the movable component includes a protective shell located on the inner wall of the plurality of detection boxes, the inner wall of the protective shell is provided with a cylinder, the inner wall of the cylinder is provided with a partition, the outer wall of the partition is provided with a pressing block, the inner wall of the cylinder is provided with a piston, the outer wall of the piston is fixedly connected to a connecting rod, the inner wall of the connecting rod is provided with a spring, the outer wall of the spring is fixedly connected to a connecting block, the inner wall of the protective shell is provided with a rack on a side close to the partition, the outer wall of the rack is meshed with a first gear, the outer wall of the first gear is fixedly connected to a magnetic pole, the outer wall of the rack is provided with a first connecting pipe, and the other end of the outer wall of the first connecting pipe is provided with a detection plate.

[0005] Preferably, the detection plate comprises a pressure measuring machine located on the outer wall of the first connecting tube, the outer wall of the pressure measuring machine is provided with a telescopic plate, and the outer wall of the telescopic plate is fixedly connected with a detection port.

[0006] Preferably, the placement component further comprises a U-shaped placement plate, an outer wall of the U-shaped placement plate is provided with a sensing protrusion, and a limit block is provided on the outer wall of the U-shaped placement plate at a side close to the sensing protrusion.

[0007] Preferably: the movable component also includes a limiting groove, the inner wall of the protective shell is provided with a second gear on the side close to the limiting groove, the second gear is meshed with the first gear, the outer wall of the protective shell is provided with a temperature sensor, the inner wall of the protective shell is provided with a guide groove on the side close to the magnetic pole, the outer wall of the guide groove is clamped with a magnet, the bottom of the magnet is provided with a labeler, the outer wall of the protective shell is provided with a second connecting pipe, and one end of the second connecting pipe is fixedly connected to an exhaust valve.

[0008] Preferably, the inner walls of the plurality of detection boxes are provided with cooling fins, and the cooling fins are symmetrically distributed on both sides of the inner walls of the detection boxes.

[0009] Preferably, the position of the connecting block corresponds to the positions of the plurality of protrusions, and the positions of the exhaust port and the exhaust valve are on the same horizontal line.

[0010] Preferably: a universal wheel is provided at the bottom of the evaluation box body, an inclined plate is provided on the outer wall of the evaluation box body, a door panel is provided on the outer wall of the evaluation box body, the evaluation box body and the door panel are hingedly connected, a collection component is provided on the inner wall of the evaluation box body, a screening component is provided on the inner wall of the evaluation box body, and a transmission component is provided on the inner wall of the evaluation box body on the side close to the collection component.

[0011] Preferably: the collecting component comprises a supporting platform located on the inner wall of the evaluation box body, a pulling rod is provided on the outer wall of the supporting platform, a battery placing platform is provided on the top of the supporting platform, a collecting box is provided on the outer wall of the supporting platform on the side away from the pulling rod, the screening component comprises a conveyor belt located on the inner wall of the evaluation box body, a fixing block is provided on the outer wall of the conveyor belt, a rotating rod is provided on the bottom of the fixing block, an arc-shaped detection shell is fixedly connected to the bottom of the fixing block, the transmission component comprises a cleaning box located on the inner wall of the evaluation box body, an arc-shaped plate is provided on the top of the cleaning box, a sensor is provided on the top of the arc-shaped plate, a conveying trough is provided on the outer wall of the cleaning box, and a pushing block is provided on the inner wall of the cleaning box.

[0012] Preferably, the conveying trough is longer than the length of the testing platform and is located on the same horizontal line as the testing platform.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. A device for simultaneously evaluating the health status of multiple groups of lithium batteries, by moving the piston when the temperature rises, the movement of the piston accelerates the increase of the temperature in the box, and when the temperature sensor detects that the heat is sufficient, the exhaust valve fixedly connected to the front end of the second connecting pipe is opened, and the movement of the piston drives the entry of air to achieve rapid cooling, thereby preventing qualified batteries from bulging or exploding due to slow temperature drop, reducing safety hazards, and since a connecting rod is fixedly connected to the outer wall of the piston, and a spring is provided on the inner wall of the connecting rod, when the piston moves, the connecting block hits multiple protrusions on the connecting plate, and a collision test is performed on the battery, ensuring that the temperature rises while the piston moves and drives the next test to be performed at the same time, effectively increasing the accuracy of the test results.

[0014] 2. This device simultaneously performs health status assessment on multiple groups of lithium batteries. The batteries on the battery placement table are clamped by the rotating rod on the top conveyor belt and then rotated. Since the bottom of the fixed block is fixedly connected with an arc-shaped detection shell, the inner wall of the arc-shaped detection shell is provided with a detection component. When the battery surface is detected to be damaged, leaking or bulging, the clamping arm is opened and the battery falls into the bottom collection box for preliminary screening, which effectively assists subsequent detection. When the lithium battery with no abnormality in appearance falls into the arc plate, it passes through the cleaning box and falls into the conveying trough. A brush is provided on the inner wall of the cleaning box to remove dust on the outer wall of the battery, thereby reducing inaccurate subsequent detection results caused by external residual dirt.

[0015] 3. This device can evaluate the health status of multiple groups of lithium batteries at the same time. After the drop resistance test is completed, the placement component is lowered to the initial height, and then connected to the detection board for detection again to ensure that the battery is still in a qualified state after the drop resistance test is completed. When the detected voltage slightly pushes the rack to move, the magnetic pole absorbs the magnet after rotation, and the magnet slides on the guide groove. When the qualified battery moves to the bottom after the test, the telescopic rod is extended and retracted, and a qualified label is affixed to the qualified battery, which is convenient for the subsequent output of lithium batteries to be quickly identified and sorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 2 A schematic diagram of the three-dimensional structure of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 3 A schematic diagram of the structure of a collection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 4 A schematic diagram of the structure of a screening component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 5 A schematic diagram of the structure of a transmission component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 6 A schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 7 A schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Figure 8 A schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Fig. 9 A schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Fig.10 A schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries; Fig.11 The present invention is a schematic diagram of the structure of a detection component of a device for simultaneously evaluating the health status of multiple groups of lithium batteries.

[0017] In the figure: 1. Evaluation box body; 2. Universal wheel; 3. Door panel; 4. Inclined plate; 5. Collection component; 51. Support table; 52. Pull rod; 53. Battery placement table; 54. Collection box; 6. Screening component; 61. Conveyor belt; 62. Rotating rod; 63. Arc detection shell; 64. Fixed block; 7. Transmission component; 71. Cleaning box; 72. Arc plate; 73. Sensor; 74. Conveying trough; 75. Push block; 8. Detection component; 81. Detection table; 82. Detection box; 83. Power supply box; 84. Control button; 85. Hot air blower; 86. Air supply port; 87. Exhaust port; 9. Temperature sensor; 10. Placement component; 101. U-shaped placement plate; 102. Sensor 10. The cam 103. The limit block 104. The connecting plate 105. The cam 11. The lifting assembly 12. The detection plate 121. The pressure test machine 122. The telescopic plate 123. The detection port 13. The movable assembly 131. The protective shell 132. The first connecting pipe 133. The rack 134. The limit groove 135. The first gear 136. The magnetic pole 137. The cylinder 138. The piston 139. The partition 1310. The push block 1311. The connecting rod 1312. The spring 1313. The connecting block 14. The cooling plate 15. The guide groove 16. The magnet 17. The labeler 18. The second connecting pipe 19. The exhaust valve 20. The second gear 21. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-11 , a device for simultaneously evaluating the health status of multiple groups of lithium batteries, comprising an evaluation box body 1, an inner wall of the evaluation box body 1 is provided with a detection assembly 8, the detection assembly 8 comprises a detection platform 81 located on the inner wall of the evaluation box body 1, a plurality of detection boxes 82 are arranged on the top of the detection platform 81, a power supply box 83 is arranged on the outer wall of the plurality of detection boxes 82, a control button 84 is arranged on the outer wall of the power supply box 83, an exhaust port 87 is arranged on the outer wall of the plurality of detection boxes 82, an air supply port 86 is arranged on the top of the plurality of detection boxes 82, a hot air blower 85 is arranged on the outer wall of the air supply port 86, a lifting assembly 11 is arranged on the inner wall of the plurality of detection boxes 82, and a placement assembly 10 is arranged on the top of the lifting assembly 11; The placement assembly 10 includes a connecting plate 104 located at the top of the lifting assembly 11, and the outer wall of the connecting plate 104 is fixedly connected with a plurality of protrusions 105. The inner wall of the plurality of detection boxes 82 is provided with a movable assembly 13 on a side close to the connecting plate 104. The movable assembly 13 includes a protective shell 131 located on the inner wall of the plurality of detection boxes 82. The inner wall of the protective shell 131 is provided with a cylinder 137. The inner wall of the cylinder 137 is provided with a partition 139. The outer wall of the partition 139 is provided with a pressing block 1310. The inner wall of the cylinder 137 is provided with a piston 138. The outer wall of the piston 138 is fixedly connected to a connecting rod 1311, the inner wall of the connecting rod 1311 is provided with a spring 1312, the outer wall of the spring 1312 is fixedly connected to a connecting block 1313, the inner wall of the protective shell 131 is provided with a rack 133 on the side close to the partition 139, the outer wall of the rack 133 is meshed with a first gear 135, the outer wall of the first gear 135 is fixedly connected to a magnetic pole 136, the outer wall of the rack 133 is provided with a first connecting tube 132, and the other end of the outer wall of the first connecting tube 132 is provided with a detection plate 12.

[0020] See also Fig.10 The detection plate 12 includes a pressure measuring machine 121 located on the outer wall of the first connecting pipe 132. The outer wall of the pressure measuring machine 121 is provided with a telescopic plate 122. The outer wall of the telescopic plate 122 is fixedly connected with a detection port 123.

[0021] It should be noted that the height of the detection plate 12 corresponds to the U-shaped placement plate 101 , so that the detection port 123 can perform more convenient detection.

[0022] See also Fig. 9 The placement component 10 also includes a U-shaped placement plate 101, the outer wall of the U-shaped placement plate 101 is provided with a sensing protrusion 102, and the outer wall of the U-shaped placement plate 101 is provided with a limit block 103 on one side close to the sensing protrusion 102.

[0023] It should be noted that when the lithium battery is pushed onto the sensing protrusion 102, the side detection component starts to operate. Since a limit block 103 is provided at the front end of the sensing protrusion 102, the limit block 103 limits the battery to prevent position deviation caused by excessive pushing force, resulting in poor detection efficiency caused by inaccurate subsequent detection position.

[0024] See also Figure 9-11The movable component 13 also includes a limiting groove 134. The inner wall of the protective shell 131 is provided with a second gear 20 on the side close to the limiting groove 134. The second gear 20 is meshed with the first gear 135. The outer wall of the protective shell 131 is provided with a temperature sensor 9. The inner wall of the protective shell 131 is provided with a guide groove 15 on the side close to the magnetic pole 136. The outer wall of the guide groove 15 is clamped with a magnet 16. A labeler 17 is provided at the bottom of the magnet 16. The outer wall of the protective shell 131 is provided with a second connecting pipe 18. One end of the second connecting pipe 18 is fixedly connected to an exhaust valve 19.

[0025] It should be noted that when the first gear 135 starts to rotate, the limit groove 134 limits the first gear 135 to prevent the gear from shifting when moving. When the first gear 135 starts to run, due to the meshing with the second gear 20, the second gear 20 drives the outer wall motor to lift the placement component 10 for subsequent testing. When the drop resistance test is completed, the placement component 10 drops to the initial height and is connected to the detection board 12 for testing again. When the detected voltage slightly pushes the rack 133 to move, since the interior is at normal temperature, there is no The accumulated excess heat and air pressure make the piston in the cylinder unable to move, and the magnetic pole 136 can only attract the magnet 16 after rotation, so that the magnet 16 slides on the guide groove 15. When the qualified battery moves to the bottom of 17 after detection, the telescopic rod is extended and retracted, and a qualified label is affixed to the qualified battery; when the temperature sensor detects that the heat is sufficient, the exhaust valve 19 fixedly connected to the front end of the second connecting pipe 18 is opened, and the movement of the piston drives the entry of air to achieve rapid cooling, thereby preventing the originally qualified battery from bulging or exploding due to the slow temperature drop, which increases the safety hazard.

[0026] See also Figure 7 : The inner walls of the multiple detection boxes 82 are provided with cooling fins 14, and the cooling fins 14 are symmetrically distributed on both sides of the inner walls of the detection boxes 82.

[0027] It should be noted that, before the battery enters the detection box 82, the refrigeration sheet 14 starts to operate, so that the detection box 82 is at a relatively low temperature to first perform low-temperature detection, thereby simulating various environments in the detection box to make the monitoring data more accurate.

[0028] See also Figure 8 : The position of the connecting block 1313 corresponds to the position of the plurality of protrusions 105, and the positions of the exhaust port 87 and the exhaust valve 19 are on the same horizontal line.

[0029] It should be noted that since the outer wall of the piston is fixedly connected to the connecting block 1313, a plurality of protrusions 105 are provided at the corresponding positions of the connecting block 1313. When the piston moves, the connecting block 1313 successfully collides with the plurality of protrusions 105 to simulate a collision test, thereby reducing collision failures caused by position mismatch and reducing work efficiency. After the temperature of the inner wall of the test box reaches a certain high temperature, since the exhaust port 87 and the exhaust valve 19 are located on the same horizontal line, it is convenient for air to enter the box in time for cooling after the exhaust valve is opened.

[0030] See also Figure 1-4 : A universal wheel 2 is provided at the bottom of the evaluation box body 1, an inclined plate 4 is provided on the outer wall of the evaluation box body 1, a door panel 3 is provided on the outer wall of the evaluation box body 1, the evaluation box body 1 and the door panel 3 are hingedly connected, a collecting component 5 is provided on the inner wall of the evaluation box body 1, a screening component 6 is provided on the inner wall of the evaluation box body 1, and a transmission component 7 is provided on the inner wall of the evaluation box body 1 on the side close to the collecting component 5.

[0031] It should be noted that when the battery needs to be tested, the collection component 5 is pulled so that the collection component 5 slides out along the slide rail to facilitate the loading and unloading of the battery. The screening component 6 is arranged above the collection component 5 to facilitate the auxiliary testing component to screen out some damaged or leaking or bulging lithium batteries.

[0032] See also Figure 1-4 The collecting component 5 comprises a supporting platform 51 located on the inner wall of the evaluation box body 1, a pulling rod 52 is provided on the outer wall of the supporting platform 51, a battery placing platform 53 is provided on the top of the supporting platform 51, and a collecting box 54 is provided on the outer wall of the supporting platform 51 on the side away from the pulling rod 52. The screening component 6 comprises a conveyor belt 61 located on the inner wall of the evaluation box body 1, a fixing block 64 is provided on the outer wall of the conveyor belt 61, a rotating rod 62 is provided on the bottom of the fixing block 64, and an arc-shaped detection shell 63 is fixedly connected to the bottom of the fixing block 64. The transmission component 7 comprises a cleaning box 71 located on the inner wall of the evaluation box body 1, an arc-shaped plate 72 is provided on the top of the cleaning box 71, a sensor 73 is provided on the top of the arc-shaped plate 72, a conveying groove 74 is provided on the outer wall of the cleaning box 71, and a pushing block 75 is provided on the inner wall of the cleaning box 71.

[0033] It should be noted that the batteries placed on the battery placement table 53 are clamped by the rotating rod 62 on the top conveyor belt 61 and then rotated. Since the bottom of the fixed block 64 is fixedly connected to the arc-shaped detection shell 63, the inner wall of the arc-shaped detection shell 63 is provided with a detection component. When the battery surface is detected to be damaged, leaking or bulging, the clamping arm is opened and the battery falls into the bottom collection box 54 for preliminary screening, which effectively assists subsequent detection. When the lithium battery with no abnormality in appearance falls into the arc plate 72, it passes through the cleaning box 71 and falls into the conveying trough 74. A brush is provided on the inner wall of the cleaning box 71 to remove dust from the outer wall of the battery, thereby reducing inaccurate subsequent detection results caused by external residual dirt. The dropped battery is pushed into the interior of the detection component by the pushing block 75.

[0034] See also Figure 5 : The length of the conveying trough 74 is greater than the length of the detection platform 81 and is located on the same horizontal line as the detection platform 81.

[0035] It should be noted that when the lithium battery falls into the conveying trough 74, it is pushed into the detection box 82 by the pushing block 75 for detection, which facilitates the lithium battery to enter the detection component and prevents the work efficiency from being reduced due to the position not being at a relatively uniform angle before detection due to messy placement.

[0036] Working principle: when the device needs to be used and the battery needs to be tested, the collecting assembly 5 is pulled so that the collecting assembly 5 slides out along the slide rail, which is convenient for loading and unloading the battery. The screening assembly 6 is arranged above the collecting assembly 5, which is convenient for the auxiliary testing assembly to screen out a part of the damaged or leaking and bulging lithium batteries. The battery placed on the battery placement table 53 is clamped by the rotating rod 62 on the top conveyor belt 61 and then rotated. Since the bottom of the fixed block 64 is fixedly connected with the arc-shaped testing shell 63, the inner wall of the arc-shaped testing shell 63 is provided with a testing assembly. When the battery surface is detected to be damaged, leaking or bulging, the clamping arm is opened and the battery falls into the bottom collecting box 54 for preliminary screening, which effectively assists the subsequent detection. When the lithium battery with no abnormal appearance falls into the arc plate 72, it passes through the cleaning box 71 and falls into the conveying trough 74. A brush is arranged on the inner wall of the cleaning box 71, so that the dust on the outer wall of the battery is cleaned, reducing the inaccuracy of the subsequent detection results caused by the residual dirt on the outside. The battery after falling is pushed into the detection assembly by the pushing block 75. When the lithium battery falls into the conveying trough 74, it is pushed into the testing box 82 by the pushing block 75 for testing, which facilitates the lithium battery to enter the testing assembly and prevents the position before testing from being at a relatively uniform angle due to the disorderly placement, which leads to a decrease in work efficiency; When the lithium battery is pushed into the detection box 82, a limit block 103 is provided at the front end of the sensing protrusion 102, and the limit block 103 limits the battery to prevent position deviation caused by excessive pushing force, resulting in poor detection efficiency caused by inaccurate subsequent detection position; after the battery enters the detection box 82, the cooling plate 14 starts to operate. Since the sealed detection box 82 has been in a relatively low temperature environment before the battery enters, the battery after entering is initially detected in a low temperature environment. A detection plate 12 is provided at the other end of the outer wall of the first connecting tube 132. When the voltage passes through the first connecting tube When the rack 132 drives the gear 133 to operate, the first gear 135 drives the second gear 20 meshing therewith to operate the instrument. After the second gear 20 operates, the driving motor drives the lifting assembly 11 to rise, and the top hot air blower 85 starts to deliver hot air to the detection box 82. When heat and a large amount of air pressure are generated in the closed detection box 82, the piston 138 on the inner wall of the protective shell 131 is pushed by the air pressure and moves backward in the cylinder 137. At this time, since the outer wall of the first gear 135 is provided with a magnetic pole 136, the magnetic pole 136 absorbs the piston moving backward as the gear rotates, and the piston is rapidly sucked. The piston 138 moves and hits the raised partition 139 provided on the inner wall of the cylinder 137 near the magnetic pole 136. The partition 139 is provided on the inner wall of the cylinder 137 to prevent the subsequent activity from being interrupted due to the piston being tightly connected with the magnetic pole 136 by suction. The piston is subjected to the magnetic suction force and hits the pressing block 1310 provided on the partition 139. The pressing block 1310 drives the first gear 135 to rotate. The current used as the driving rack cannot last for a long time. The rack that originally drives the gear becomes driven. The gear drives the rack to continue to move. The rack further limits the speed of the gear, and the movement of the piston 138 accelerates. The test box 82 is heated; since the outer wall of the piston 138 is fixedly connected with a connecting rod 1311, and the inner wall of the connecting rod 1311 is provided with a spring, when the piston 138 moves, the connecting block 1313 hits the multiple protrusions 105 on the connecting plate 104, and performs a collision test on the battery, which effectively increases the accuracy of the detection. When the temperature sensor detects that the heat is sufficient, the exhaust valve 19 fixedly connected to the front end of the second connecting pipe 18 is opened, and the movement of the piston drives the entry of air to achieve rapid cooling, thereby preventing the originally qualified battery from bulging or exploding due to the slow temperature drop, which increases the safety hazard; After the drop resistance test is completed, the placement component 10 is lowered to the initial height and then connected to the detection board 12 for detection. When the detected voltage slightly pushes the rack 133 to move, since the interior is at normal temperature and there is no excess heat and air pressure accumulated, the piston in the cylinder cannot move. The magnetic pole 136 can only absorb the magnet 16 after rotation, and the magnet 16 slides on the guide groove 15. When the qualified battery moves to the bottom of 17 after the test, the telescopic rod is extended and retracted, and a qualified label is affixed to the qualified battery.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for simultaneously evaluating the health status of multiple groups of lithium batteries, comprising an evaluation box body (1), characterized in that: The inner wall of the evaluation box body (1) is provided with a detection component (8), the detection component (8) comprises a detection platform (81) located on the inner wall of the evaluation box body (1), a plurality of detection boxes (82) are provided on the top of the detection platform (81), a power supply box (83) is provided on the outer wall of the plurality of detection boxes (82), a control button (84) is provided on the outer wall of the power supply box (83), an exhaust port (87) is provided on the outer wall of the plurality of detection boxes (82), an air supply port (86) is provided on the top of the plurality of detection boxes (82), a hot air blower (85) is provided on the outer wall of the air supply port (86), a lifting component (11) is provided on the inner wall of the plurality of detection boxes (82), and a placement component (10) is provided on the top of the lifting component (11); The placement component (10) comprises a connection plate (104) located at the top of the lifting component (11); the outer wall of the connection plate (104) is fixedly connected to a plurality of protrusions (105); the inner walls of the plurality of detection boxes (82) are provided with a movable component (13) on a side close to the connection plate (104); the movable component (13) comprises a protective shell (131) located on the inner walls of the plurality of detection boxes (82); the inner wall of the protective shell (131) is provided with a cylinder (137); the inner wall of the cylinder (137) is provided with a partition (139); the outer wall of the partition (139) is provided with a push block (1310); the inner wall of the cylinder (137) is provided with a piston (1311); 8), the outer wall of the piston (138) is fixedly connected to a connecting rod (1311), the inner wall of the connecting rod (1311) is provided with a spring (1312), the outer wall of the spring (1312) is fixedly connected to a connecting block (1313), the inner wall of the protective shell (131) is provided with a rack (133) on a side close to the partition (139), the outer wall of the rack (133) is meshed with a first gear (135), the outer wall of the first gear (135) is fixedly connected to a magnetic pole (136), the outer wall of the rack (133) is provided with a first connecting tube (132), and the other end of the outer wall of the first connecting tube (132) is provided with a detection plate (12).

2. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 1, characterized in that: The detection plate (12) comprises a pressure measuring machine (121) located on the outer wall of the first connecting pipe (132), the outer wall of the pressure measuring machine (121) is provided with a telescopic plate (122), and the outer wall of the telescopic plate (122) is fixedly connected with a detection port (123).

3. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 1, characterized in that: The placement assembly (10) further comprises a U-shaped placement plate (101), the outer wall of the U-shaped placement plate (101) being provided with a sensing protrusion (102), and the outer wall of the U-shaped placement plate (101) being provided with a limiting block (103) on a side close to the sensing protrusion (102).

4. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 1, characterized in that: The movable component (13) further comprises a limiting groove (134); a second gear (20) is provided on the inner wall of the protective shell (131) at a side close to the limiting groove (134); the second gear (20) is meshed with the first gear (135); a temperature sensor (9) is provided on the outer wall of the protective shell (131); a guide groove (15) is provided on the inner wall of the protective shell (131) at a side close to the magnetic pole (136); a magnet (16) is clamped on the outer wall of the guide groove (15); a labeling device (17) is provided at the bottom of the magnet (16); a second connecting pipe (18) is provided on the outer wall of the protective shell (131); an exhaust valve (19) is fixedly connected to one end of the second connecting pipe (18).

5. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 4, characterized in that: The inner walls of the plurality of detection boxes (82) are provided with cooling fins (14), and the cooling fins (14) are symmetrically distributed on both sides of the inner wall of the detection box (82).

6. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 1, characterized in that: The position of the connection block (1313) corresponds to the positions of the plurality of protrusions (105), and the positions of the exhaust port (87) and the exhaust valve (19) are on the same horizontal line.

7. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 1, characterized in that: The bottom of the evaluation box body (1) is provided with a universal wheel (2), the outer wall of the evaluation box body (1) is provided with an inclined plate (4), the outer wall of the evaluation box body (1) is provided with a door panel (3), the evaluation box body (1) and the door panel (3) are hingedly connected, the inner wall of the evaluation box body (1) is provided with a collection component (5), the inner wall of the evaluation box body (1) is provided with a screening component (6), and the inner wall of the evaluation box body (1) is provided with a transmission component (7) on a side close to the collection component (5).

8. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 7, characterized in that: The collecting component (5) comprises a support platform (51) located on the inner wall of the evaluation box body (1), a pulling rod (52) is provided on the outer wall of the support platform (51), a battery placement platform (53) is provided on the top of the support platform (51), and a collecting box (54) is provided on the outer wall of the support platform (51) away from the pulling rod (52). The screening component (6) comprises a conveyor belt (61) located on the inner wall of the evaluation box body (1), a fixing block (64) is provided on the outer wall of the conveyor belt (61), and the battery storage platform (53) is provided on the top of the support platform (51). A rotating rod (62) is provided at the bottom of the fixed block (64), and an arc-shaped detection shell (63) is fixedly connected to the bottom of the fixed block (64). The transmission component (7) includes a cleaning box (71) located on the inner wall of the evaluation box body (1), and an arc-shaped plate (72) is provided on the top of the cleaning box (71), and a sensor (73) is provided on the top of the arc-shaped plate (72). A conveying groove (74) is provided on the outer wall of the cleaning box (71), and a pushing block (75) is provided on the inner wall of the cleaning box (71).

9. The device for simultaneously evaluating the health status of multiple groups of lithium batteries according to claim 8, characterized in that: The conveying trough (74) has a length greater than that of the detection platform (81) and is located on the same horizontal line as the detection platform (81).

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