CN220690403U - Drop-out lithium battery thermal runaway detection device - Google Patents
Drop-out lithium battery thermal runaway detection device Download PDFInfo
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- CN220690403U CN220690403U CN202322450119.6U CN202322450119U CN220690403U CN 220690403 U CN220690403 U CN 220690403U CN 202322450119 U CN202322450119 U CN 202322450119U CN 220690403 U CN220690403 U CN 220690403U
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- lithium battery
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 51
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 230000007306 turnover Effects 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model discloses a drop-out lithium battery thermal runaway detection device, which relates to the technical field of battery detection and comprises a base and a turnover assembly, wherein the top of the base is fixedly connected with a supporting rod, the inside of the supporting rod is fixedly connected with a servo motor, a fixed seat is fixedly connected to the inside of the supporting rod and is positioned right above the servo motor, the output end of the servo motor is fixedly connected with a screw rod, one end of the screw rod, which is far away from the servo motor, is rotationally connected with the fixed seat, the outer thread of the screw rod is connected with a sliding block, the inside of the supporting rod is slidably connected with a connecting rod, one end of the connecting rod is fixedly connected with the sliding block, one end of the connecting rod, which is far away from the sliding block, is provided with the turnover assembly, and a detection box is fixedly connected to the top of the base and is positioned right below the turnover assembly.
Description
Technical Field
The utility model relates to the technical field of battery detection, in particular to a drop-out lithium battery thermal runaway detection device.
Background
A lithium battery is a battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material, and therefore, such a battery is also called a lithium metal battery. Unlike other batteries, lithium batteries have characteristics of high charge density, long life, high unit cost, and the like, and lithium battery packs are an integrated body of a plurality of lithium batteries. Lithium batteries currently on the market all need to achieve a specified impact strength, otherwise burst during use or during transport due to insufficient strength in the event of a crash. Therefore, the lithium battery needs to pass through the drop test with the designated height before mass production, most of the current enterprises for producing the lithium battery carry out the drop test by manpower, the lithium battery is taken to the designated height, the lithium battery is released by hands to fall freely, the process does not have relevant detection test equipment, the stability and the reliability of detection data are poor, the accuracy is low, and the lithium battery possibly bursts when falling to the ground, if the position of a tester is very close to the burst position, a certain potential safety hazard exists.
Chinese patent CN209264235U discloses a detection device for lithium cell drop test, including bracing piece, conveying subassembly and locate the box of conveying subassembly bottom, compare with prior art, the lithium cell detection device that this patent provided can satisfy quick, not high detection demand, only need control the drop height of lithium cell through adjusting first adjustment mechanism and second adjustment mechanism during the test, and can handle the experimental result respectively, carry out unified classification detection after the test is accomplished, the efficiency of detection has been improved, it is fast to have detection speed, the detection form is various, efficient technical advantage.
The device does not set up corresponding safeguard measure at its box after the lithium cell falls, and the lithium cell falls from the eminence and probably can take place the fire promptly, simultaneously because the lithium cell falls after probably bursting, its inside releases a large amount of harmful gas, if the test personnel is very near apart from the position of bursting, then has certain potential safety hazard.
The utility model comprises the following steps:
the utility model aims to solve the problems and provide a drop-out type lithium battery thermal runaway detection device which solves the problems in the background art.
In order to solve the problems, the utility model provides a technical scheme that:
the utility model provides a drop-out lithium cell thermal runaway detection device, includes base and upset subassembly, the top fixedly connected with bracing piece of base, the inside fixedly connected with servo motor of bracing piece, the inside of bracing piece just is located servo motor's fixedly connected with fixing base directly over, servo motor's output fixedly connected with lead screw, servo motor's one end and fixing base rotation are kept away from to the lead screw are connected, the outside threaded connection of lead screw has the slider, the inside sliding connection of bracing piece has the connecting rod, the one end and the slider fixed connection of connecting rod, the one end that the slider was kept away from to the connecting rod is provided with upset subassembly, the top of base just is located the fixedly connected with detection case under the upset subassembly.
As a preferable scheme of the utility model, the overturning assembly comprises a vertical rod, the vertical rod is fixedly arranged at the top of a connecting rod, the top end of the vertical rod is rotationally connected with a transverse plate, an electric telescopic rod I is rotationally connected between the connecting rod and the transverse plate, and a placing box is fixedly connected at the top of the transverse plate.
As a preferable scheme of the utility model, the inside of the detection box is connected with the plate seat in a sliding way, limiting blocks are symmetrically and fixedly connected in the detection box, the tops of the two limiting blocks are contacted with the plate seat, an electric telescopic rod II is symmetrically and fixedly connected in the detection box and positioned below the plate seat, and a pressure sensor is fixedly connected in the plate seat.
As a preferable scheme of the utility model, the plate body is detachably connected in the plate seat, the bottom of the plate body is fixedly connected with the convex block, the groove matched with the plate body is formed in the plate seat, and the pressure sensor is contacted with the bottom of the plate body.
As a preferable scheme of the utility model, the inside of the base is fixedly connected with the dry powder box, the inside of the base is fixedly connected with the dry powder pump at one side of the dry powder box, the input end of the dry powder pump is fixedly connected with the feeding pipe, one end of the feeding pipe, which is far away from the dry powder pump, extends to the inside of the dry powder box, the inside of the detection box is fixedly connected with the nozzle above the plate body, the output end of the dry powder pump is fixedly connected with the feeding pipe, and one end of the feeding pipe, which is far away from the dry powder pump, is fixedly connected with the nozzle.
As a preferable scheme of the utility model, the temperature sensor is fixedly connected in the detection box and above the plate body, and the camera is fixedly connected in the detection box and right above the temperature sensor.
The beneficial effects of the utility model are as follows: the sliding block is driven to slide up and down through the screw rod, so that a worker can detect the explosion resistance of the lithium battery according to different heights, and the step is quick and simple; the transverse plate is rotated through the extension and retraction of the electric extension rod I, so that manual battery holding is avoided, manual fixed installation is reduced, and the degree of automation is high; by arranging the detection box, the drop test is carried out in the detection box, and the explosion of the lithium battery in the drop test process is effectively prevented, so that the safety accident is caused. Therefore, the safety coefficient of the device is improved, so that the use is safer; by arranging the dry powder box, when the lithium battery fires in the detection process, the nozzle sprays dry powder extinguishing agent into the detection box, so that the fire extinguishing function is realized, and the protection effect on detection personnel is realized; through setting up the combined use of pressure sensor, temperature-sensing ware and camera, can respond to and record the impact force and the heat that produce after falling the lithium cell, improve the precision that detects, make things convenient for staff follow-up work.
Description of the drawings:
for ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a schematic view of the internal cross-sectional structure of the present utility model;
FIG. 3 is an enlarged schematic view of the present utility model at A in FIG. 2;
fig. 4 is an enlarged schematic view of the present utility model at B in fig. 2.
In the figure: 1. a base; 2. a support rod; 3. a detection box; 4. a servo motor; 5. a screw rod; 6. a fixing seat; 7. a slide block; 8. a connecting rod; 9. a flip assembly; 91. an electric telescopic rod I; 92. a vertical rod; 93. a cross plate; 94. placing a box; 10. a nozzle; 11. a limiting block; 12. a plate seat; 13. a plate body; 14. a groove; 15. a bump; 16. a pressure sensor; 17. an electric telescopic rod II; 18. a temperature sensor; 19. a camera; 20. a dry powder box; 21. a dry powder pump; 22. a feed pipe; 23. and a material conveying pipe.
The specific embodiment is as follows:
the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Examples:
referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a drop-out lithium cell thermal runaway detection device, includes base 1 and upset subassembly 9, the top fixedly connected with bracing piece 2 of base 1, the inside fixedly connected with servo motor 4 of bracing piece 2, the inside of bracing piece 2 just is located servo motor 4 and is fixedly connected with fixing base 6 directly over, servo motor 4's output fixedly connected with lead screw 5, the one end that servo motor 4 was kept away from to lead screw 5 rotates with fixing base 6 to be connected, the external screw thread of lead screw 5The sliding block 7 is connected, and it should be noted that, because the size of the sliding block 7 exactly matches with the size of the supporting rod 2, the supporting rod 2 can restrict the sliding block 7, that is, the sliding block 7 slides up and down along the screw rod 5; the inside of the supporting rod 2 is connected with a connecting rod 8 in a sliding way, one end of the connecting rod 8 is fixedly connected with the sliding block 7, namely, the sliding block 7 is driven to slide up and down through the screw rod 5, so that a worker can detect the explosion resistance of the lithium battery according to different heights, and the step is quick and simple; one end of the connecting rod 8 far away from the sliding block 7 is provided with a turnover assembly 9, the top of the base 1 is fixedly connected with the detection box 3 under the turnover assembly 9, the turnover assembly 9 comprises a vertical rod 92, the vertical rod 92 is fixedly arranged at the top of the connecting rod 8, and the vertical rod 92 and the connecting rod 8 are connected together through welding; the top end of the vertical rod 92 is rotationally connected with the transverse plate 93, an electric telescopic rod I91 is rotationally connected between the connecting rod 8 and the transverse plate 93, the top of the transverse plate 93 is fixedly connected with the placement box 94, the transverse plate 93 is rotated through the expansion and contraction of the electric telescopic rod I91, manual battery holding is avoided, manual fixed installation is reduced, and the automation degree is high; the inside of the detection box 3 is slidably connected with a plate seat 12, limiting blocks 11 are symmetrically and fixedly connected in the detection box 3, and the tops of the two limiting blocks 11 are in contact with the plate seat 12, namely the plate seat 12 cannot slide downwards under the limitation of the limiting blocks 11, so that the plate seat 12 is ensured to be kept stable when the lithium battery falls; inside of the detection box 3 and below the plate seat 12 are symmetrically and fixedly connected with an electric telescopic rod II 17, and the plate seat 12 is driven to slide upwards through the electric telescopic rod II 17, so that the plate seat 12 is at the momentNo longer is connected withThe plate body 13 is taken out and replaced by plates made of different materials without contacting with the limiting block 11, so that the falling resistance between the lithium battery and the plates made of different materials is detected; the pressure sensor 16 is fixedly connected to the inside of the plate seat 12, the plate body 13 is detachably connected to the inside of the plate seat 12, and the plate body 13 can be replaced by plates made of different materials such as iron plates, wood plates and cement plates, so that the detection diversity is improved; the bottom of the plate body 13 is fixedly connected with a bump 15, the inside of the plate seat 12 is provided with a groove 14 matched with the plate body 13, and the pressure sensor 16 is contacted with the bottom of the plate body 13, so that the drop test is performed in the detection box 3 by being provided with the detection box 3, thereby effectively preventingThe lithium battery explodes during the drop test, thereby causing safety accidents. Therefore, the safety coefficient of the device is improved, and the use is safer.
Further, in order to prevent the lithium battery from firing in the drop test process, thereby causing a safety accident, a dry powder tank 20 is fixedly connected in the base 1, it is to be noted that the dry powder tank 20 is internally provided with a dry powder extinguishing agent such as ammonium phosphate salt, and the like, a dry powder pump 21 is fixedly connected in the base 1 and positioned at one side of the dry powder tank 20, the input end of the dry powder pump 21 is fixedly connected with a feed pipe 22, one end of the feed pipe 22, which is far away from the dry powder pump 21, extends to the interior of the dry powder tank 20, the interior of the detection tank 3 is fixedly connected with a spray nozzle 10 above the plate 13, the output end of the dry powder pump 21 is fixedly connected with a feed pipe 23, and one end of the feed pipe 23, which is far away from the dry powder pump 21, is fixedly connected with the spray nozzle 10, and by arranging the dry powder tank 20, when the lithium battery fires in the detection process, the spray dry powder extinguishing agent is sprayed into the interior of the detection tank 3 by the spray nozzle 10, thereby realizing a fire extinguishing function, and simultaneously realizing a protection effect on detection personnel; the inside of detecting box 3 and be located the top fixedly connected with temperature-sensing ware 18 of plate body 13, the inside of detecting box 3 and be located the fixedly connected with camera 19 directly over temperature-sensing ware 18, through setting up pressure sensor 16, temperature-sensing ware 18 and the combination of camera 19 is used, can respond to and record the impact force and the heat that produce after falling the lithium cell, improve the precision that detect, make things convenient for staff's follow-up work, it is to be noted that the model of temperature-sensing ware 18 is BRW600-400A, the model of pressure sensor 16 is BRW800-2100, the model of camera 19 is CS-808.
To sum up: when the device is used, a worker firstly puts a lithium battery to be detected into the placement box 94, then starts the servo motor 4, the servo motor 4 drives the screw rod 5 to rotate, the size of the sliding block 7 just fits with the size of the supporting rod 2, the supporting rod 2 can restrict the sliding block 7, namely, the sliding block 7 slides up and down along the screw rod 5, meanwhile, the connecting rod 8 slides along with the sliding block 7, after the sliding block slides to a corresponding height, the electric telescopic rod 91 is started at the moment, the expansion of the electric telescopic rod 91 drives the transverse plate 93 to rotate, and when the transverse plate is used, the sliding rod 7 slides up and down along the screw rod 5When the plate 93 is changed from the horizontal direction to the vertical direction, the lithium battery falls into the detection box 3 from the placement box 94, and the plate 13 is transmitted to the pressure sensor 16 when being subjected to the impact force of the falling of the lithium battery, so that the plate 12 cannot slide downwards under the limit of the limit block 11 in order to ensure the stability of the plate 12, and the plate 12 is kept stable and motionless when the lithium battery falls; meanwhile, in order to enhance the diversity of the detection modes of the anti-falling performance of the lithium battery, the second electric telescopic rod 17 drives the plate seat 12 to slide upwards, and the plate seat 12 is at the momentNo longer is connected withThe plate body 13 is not in contact with the limiting block 11, is replaced by plates made of different materials, and finally is clamped and combined with the groove 14 by the convex blocks 15, so that the plate body 13 and the plate seat 12 are connected into a whole, the falling resistance between a lithium battery and the plates made of different materials is detected, the falling process of the lithium battery is detected by the temperature sensor 18 and the camera 19 in the whole course, when the heat emitted by the lithium battery reaches an alarm line of the temperature sensor 18 and possibly causes fire, the dry powder pump 21 sucks dry powder extinguishing agent from the dry powder box 20 and conveys the dry powder extinguishing agent to the inside of the nozzle 10 through the conveying pipe 23, the inside of the detection box 3 is sprayed by the nozzle 10, and the occurrence of safety accidents caused by excessive temperature fire in the falling test process of the lithium battery is avoided.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a drop-out lithium cell thermal runaway detection device, its characterized in that, including base (1) and upset subassembly (9), the top fixedly connected with bracing piece (2) of base (1), the inside fixedly connected with servo motor (4) of bracing piece (2), the inside of bracing piece (2) just is located fixedly connected with fixing base (6) directly over servo motor (4), the output fixedly connected with lead screw (5) of servo motor (4), the one end and fixing base (6) rotation connection of servo motor (4) are kept away from to lead screw (5), the outside threaded connection of lead screw (5) has slider (7), the inside sliding connection of bracing piece (2) has connecting rod (8), the one end and slider (7) fixedly connected with of connecting rod (8), the one end that slider (7) were kept away from to connecting rod (8) is provided with upset subassembly (9), the top of base (1) just is located under upset subassembly (9) fixedly connected with detection case (3).
2. The drop-out lithium battery thermal runaway detection device according to claim 1, wherein the turnover assembly (9) comprises a vertical rod (92), the vertical rod (92) is fixedly installed at the top of the connecting rod (8), a transverse plate (93) is rotatably connected to the top end of the vertical rod (92), an electric telescopic rod I (91) is rotatably connected between the connecting rod (8) and the transverse plate (93), and a placement box (94) is fixedly connected to the top of the transverse plate (93).
3. The drop-out lithium battery thermal runaway detection device according to claim 1, wherein a plate seat (12) is slidably connected in the detection box (3), limiting blocks (11) are symmetrically and fixedly connected in the detection box (3), tops of the two limiting blocks (11) are in contact with the plate seat (12), an electric telescopic rod II (17) is symmetrically and fixedly connected in the detection box (3) and located below the plate seat (12), and a pressure sensor (16) is fixedly connected in the plate seat (12).
4. The drop-out lithium battery thermal runaway detection device according to claim 3, wherein a plate body (13) is detachably connected to the inside of the plate seat (12), a protruding block (15) is fixedly connected to the bottom of the plate body (13), a groove (14) matched with the plate body (13) is formed in the inside of the plate seat (12), and the pressure sensor (16) is in contact with the bottom of the plate body (13).
5. The drop-out lithium battery thermal runaway detection device according to claim 1, wherein the inside of base (1) is fixedly connected with dry powder case (20), the inside of base (1) just is located one side fixedly connected with dry powder pump (21) of dry powder case (20), the input fixedly connected with inlet pipe (22) of dry powder pump (21), the one end that dry powder pump (21) was kept away from to inlet pipe (22) extends to the inside of dry powder case (20), the inside of detection case (3) just is located the top fixedly connected with nozzle (10) of plate body (13), the output fixedly connected with conveying pipeline (23) of dry powder pump (21), the one end that dry powder pump (21) was kept away from to conveying pipeline (23) and nozzle (10) fixedly connected.
6. The drop-out lithium battery thermal runaway detection device according to claim 1, wherein a temperature sensor (18) is fixedly connected to the inside of the detection box (3) and located above the plate body (13), and a camera (19) is fixedly connected to the inside of the detection box (3) and located right above the temperature sensor (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322450119.6U CN220690403U (en) | 2023-09-11 | 2023-09-11 | Drop-out lithium battery thermal runaway detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322450119.6U CN220690403U (en) | 2023-09-11 | 2023-09-11 | Drop-out lithium battery thermal runaway detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220690403U true CN220690403U (en) | 2024-03-29 |
Family
ID=90410342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322450119.6U Active CN220690403U (en) | 2023-09-11 | 2023-09-11 | Drop-out lithium battery thermal runaway detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220690403U (en) |
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2023
- 2023-09-11 CN CN202322450119.6U patent/CN220690403U/en active Active
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