Compatible helium detection device

Abstract

The invention provides a compatible helium detection device. The compatible helium detection device comprises a machine table, a translation mechanism, a compatible battery jig and a cavity cover mechanism, the compatible battery jig is fixed to the output end of the linear module of the translation mechanism, the cavity cover mechanism is arranged at the left end of the linear module in a crossing mode, and the compatible battery jig comprises a compatible jig assembly and an adjacent compatible jig adjusting assembly. When the compatible jig assembly is driven by the linear module to enter the cavity cover mechanism to be aligned, the compatible jig assembly can be lifted to be tightly combined with the cavity cover mechanism to form a sealing cavity for helium detection, and the compatible jig adjusting assembly can adjust the width of a battery clamping position of the compatible jig assembly. The cavity cover mechanism comprises a lifting type battery vacuumizing and helium injection assembly, so that the height of a helium injection nozzle can be adjusted, the batteries with various heights can be sealed in a compatible manner, and vacuumizing, helium injection and helium detection can be carried out; the compatible helium detection device can be compatible with helium detection of batteries of various specifications.

Description

Technical Field

[0001] The present invention belongs to the technical field of cylindrical battery manufacturing equipment, and particularly relates to a compatible helium leak detection device. Background Art

[0002] A square aluminum shell battery, hereinafter referred to as a battery, generally has a length of 120 - 250 mm, a width of 22 - 100 mm, and a height of 80 - 250 mm. The battery specifications are defined by the numerical values of the length, width, and height dimensions, and the battery specifications are generally from 1202080 to 250100250.

[0003] A battery is a sealed container containing an electric core and anhydrous electrolyte. Poor sealing of the battery will cause the electrolyte to leak during use. More seriously, water vapor will penetrate in, and the water vapor will condense into water and enter the electrolyte, which will damage the insulation performance of the internal electrochemical system of the battery. A small amount of water will cause an abnormal large current during the charging process of the battery, resulting in abnormal heating, even explosion and combustion. The sealing of the battery is related to the safety of the battery and devices using the battery, such as electric vehicles.

[0004] After the battery top cover is welded and the sealing nail is welded, the sealing performance needs to be detected. The industry uses helium as the tracer gas for leak detection, forms an air pressure difference inside and outside the battery to make helium leak out from the battery, and uses a helium mass spectrometer to detect the helium leak rate, which is called helium leak detection. After the top cover is welded, helium is filled into the battery in a vacuum chamber to detect leaks, which is called pre-helium leak detection. After the sealing nail is welded, the helium gas pre-sealed in the battery is used to detect leaks in the vacuum chamber, which is called post-helium leak detection.

[0005] During detection, the battery is placed in a sealed chamber and evacuated by a vacuum pump to make the sealed chamber a vacuum chamber, forming an air pressure difference inside and outside the battery, so that helium leaks out from possible welding leaks, cracks, pores, slag inclusions, etc. in the battery from the inside to the outside. The detection pump extracts the vacuum air in the vacuum chamber that may contain the leaked helium and gives it to the helium leak detector. After a certain period of time, when the speed at which the detection pump extracts the helium gas from the vacuum chamber for the helium leak detector to detect is equal to the speed at which the battery leaks helium into the vacuum chamber, that is, when the helium detection and helium leakage are balanced, the helium gas flow rate per unit time detected is the helium leak rate of the battery.

[0006] Leakage of a sealed container is absolute, and non-leakage is relative. The qualified standard for the airtightness of a cylindrical battery is that at a temperature of 23 °C, if the helium leak rate ≥ 9.9×10- 7 Pa·m 3 / s, it is judged as unqualified. According to this standard, the unqualified products with unqualified sealing performance are detected and removed to ensure that the sealing performance of the batteries entering use is qualified, and thus ensure the safety performance of the batteries entering use.

[0007] The requirements for helium leak detection of the battery are:

[0008] (1) The air pressure in the sealed chamber reaches ≤ 20 Pa within 2 s after evacuation.

[0009] (2) Sealing performance of the vacuum chamber: After the air pressure reaches ≤ 20 Pa, the air pressure increase is ≤ 1 Pa / s.

[0010] In the existing helium leak detection technology, a set of helium leak detection device can only be used for one specification of battery. Therefore, we have developed a compatible helium leak detection device that can perform sealing detection on multiple specifications of batteries, reducing the number of changeovers and thus greatly reducing the changeover cost. Summary of the Invention

[0011] The purpose of the present invention is to provide a compatible helium leak detection device for performing sealing detection on multiple specifications of batteries, including: a machine platform, a translation mechanism, a compatible battery fixture, and a chamber cover mechanism; the translation mechanism includes a translation base plate and a linear module, the translation base plate is fixed on the machine platform, the linear module is horizontally fixed on the translation base plate, the compatible battery fixture is fixed on the output end of the linear module, the chamber cover mechanism is fixed on the machine platform and straddles the left end of the linear module, the linear module can drive the compatible battery fixture to move in and out under the chamber cover mechanism, the compatible battery fixture includes a compatible fixture component and an adjacent compatible fixture adjustment component, when the compatible battery fixture enters under the chamber cover mechanism for alignment, it can raise its compatible fixture component to be closely combined with the chamber cover mechanism to form a sealed chamber for helium leak detection, when the compatible battery fixture completely moves out of the chamber cover mechanism, it can load and unload batteries, the compatible fixture adjustment component can adjust the width of the battery clamping position where the compatible fixture component clamps the battery in the battery width direction, so that the compatible fixture component can compatibly clamp batteries of multiple lengths, widths, and heights, and the chamber cover mechanism includes a lifting type battery vacuuming and helium injection component, the lifting type battery vacuuming and helium injection component can adjust the height of the helium injection nozzle, and can compatibly seal batteries of multiple heights for vacuuming and helium leak detection, and the compatible helium leak detection device can be compatible with the helium leak detection of multiple specifications of batteries. Description of the Drawings

[0012] Figure 1 Structural diagram of the compatible helium leak detection device;

[0013] Figure 2 Structural diagram of the compatible battery fixture;

[0014] Figure 3 Structural diagram of the compatible fixture component;

[0015] Figure 4 Front structural diagram of the fixture;

[0016] Figure 5 Reverse structural diagram of the fixture;

[0017] Figure 6 Structural diagram of the compatible fixture adjustment component;

[0018] Figure 7 Structural diagram of the chamber cover mechanism;

[0019] Figure 8 Structure diagram of the vacuum pumping and helium leak detection assembly for the sealed cavity;

[0020] Figure 9 Structure of the lifting type battery vacuum pumping and helium injection assembly Figure 1 ;

[0021] Figure 10 Structure of the lifting type battery vacuum pumping and helium injection assembly Figure 2 .

[0022] Description of the reference numerals in the drawings:

[0023] 10. Battery;

[0024] 100. Machine platform;

[0025] 200. Translation mechanism; 210. Translation bottom plate; 220. Linear module;

[0026] 300. Compatible battery fixture;

[0027] 310. Compatible fixture assembly;

[0028] 311. Fixture support; 3111. Fixture support bottom plate; 3112. Fixture support sliding column; 3113. Fixture support top plate; 3114. Fixture lifting sliding sleeve;

[0029] 312. Fixture lifting drive;

[0030] 313. Fixture slide plate;

[0031] 314. Lower sealing ring;

[0032] 315. Fixture; 3151. Fixture bottom plate; 3152. Fixture front support; 3152A. Fixture rear support; 3153. Fixture adjustment first drive plate; 3153A. Fixture adjustment first linkage plate; 3154. Fixture adjustment second drive plate; 3154A. Fixture adjustment second linkage plate; 3155. Fixture adjustment first linkage rod; 3155A. Fixture adjustment second linkage rod; 3156. Fixture adjustment first drive nut; 3156A. Fixture adjustment second drive nut; 3157. Fixture adjustment double-headed lead screw; 3158. Fixture adjustment first sliding sleeve; 3158A. Fixture adjustment second sliding sleeve; 3159. Fixture adjustment first sliding rod; 3159A. Fixture adjustment second sliding rod; 315A. Fixture adjustment drive first magnetic coupling; 315B. Fixture clamping plate; 315C. Battery clamping position; 315D. Fixture height reference bar;

[0033] 320. Compatible fixture adjustment component; 321. Fixture adjustment bracket; 322. Fixture adjustment advance / retreat drive mounting plate; 323. Fixture adjustment slide group; 324. Fixture adjustment advance / retreat drive; 325. Fixture adjustment carriage; 326. Fixture adjustment limit member; 327. Fixture adjustment drive; 328. Fixture adjustment drive second magnetic coupling; 329. Fixture height

[0034] Detector

[0035] 400. Chamber cover mechanism

[0036] 410. Chamber cover bracket; 411. Chamber cover bracket bottom plate; 412. Chamber cover bracket column; 413. Chamber cover bracket top plate; 420. Upper sealing ring; 430. Cavity

[0037] 440. Sealed chamber vacuum pumping and helium leak detection component; 441. Vacuum pumping pipeline; 442. Vacuum pumping gate valve; 443. Helium leak detection pipeline; 444. Helium leak detection gate valve; 445. Air gate valve; 446. Muffler; 447. Cleaning gas gate valve; 448. Vacuum gauge

[0038] 450. Lifting type battery vacuum pumping and helium injection component

[0039] 451. Battery vacuum pumping and helium injection bracket; 452. Battery vacuum pumping and helium injection lifting drive bracket; 453. Battery vacuum pumping and helium injection lifting drive; 454. Battery vacuum pumping and helium injection lifting transmission lead screw; 455. Battery vacuum pumping and helium injection lifting transmission nut; 456. Battery vacuum pumping and helium injection lifting slide group

[0040] 457. Battery vacuum pumping and helium injection lifting component; 4571. Battery vacuum pumping and helium injection lifting carriage; 4572. Battery vacuum pumping and helium injection lifting unit; 45721. Battery vacuum pumping and helium injection slide tube; 45722. Battery vacuum pumping and helium injection slide tube air joint; 45723. Battery vacuum pumping and helium injection pressure gauge; 45724. Battery vacuum pumping and helium injection nozzle sealing ring

[0041] 458. Battery vacuum pumping and helium injection lifting seal component; 4581. Battery vacuum pumping and helium injection seal fixing plate; 4582. Battery vacuum pumping and helium injection seal unit; 45821. Battery vacuum pumping and helium injection seal sliding sleeve; 45822. Battery vacuum pumping and helium injection sealing ring

[0042] 459. Battery vacuum pumping and helium injection fixing component; 4591. Battery vacuum pumping and helium injection fixing unit; 45911. Battery vacuum pumping and helium injection fixing tube; 45912. Battery vacuum pumping and helium injection fixing tube air joint; 45913. Battery vacuum pumping and helium injection gate valve Detailed implementation method

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the terms in the present invention can be understood according to specific situations.

[0045] See Figure 1 and Figure 2, this embodiment provides a compatible helium leak detection device for performing airtightness detection on batteries of various specifications, including: a machine table 100, a translation mechanism 200, a compatible battery fixture 300, and a chamber cover mechanism 400; the translation mechanism 200 includes a translation bottom plate 210 and a linear module 220. The translation bottom plate 210 is fixed on the machine table 100, and the linear module 220 is horizontally fixed on the translation bottom plate 210. The compatible battery fixture 300 is fixed on the output end of the linear module 220, and the chamber cover mechanism 400 is fixed on the machine table 100 and straddles the left end of the linear module 220. The linear module 220 is used to drive the compatible battery fixture 300 to enter and exit under the chamber cover mechanism 400. The compatible battery fixture 300 includes a compatible fixture assembly 310 and an adjacent compatible fixture adjustment assembly 320. When the compatible battery fixture 300 enters under the chamber cover mechanism 400 for alignment, it can raise its compatible fixture assembly 310 to be closely combined with the chamber cover mechanism 400 to form a sealed chamber for helium leak detection. When the compatible battery fixture 300 is completely removed from the chamber cover mechanism 400, batteries can be loaded and unloaded. It is characterized in that the compatible fixture adjustment assembly 320 can adjust the width of the battery clamping position 315C where the compatible fixture assembly 310 clamps the battery in the battery width direction, so that the compatible fixture assembly 310 can compatibly clamp batteries 10 of various lengths, widths, and heights. Moreover, the chamber cover mechanism 400 includes a lifting battery vacuuming and helium injection assembly 450. The lifting battery vacuuming and helium injection assembly 450 can adjust the height of the helium injection nozzle and can compatibly seal batteries of various heights for vacuuming and helium leak detection. The compatible helium leak detection device can be compatible with helium leak detection of batteries of various specifications.

[0046] See Figure 3, Further, the compatible fixture assembly 310 of the compatible battery fixture 300 includes a fixture support 311, a fixture lifting driver 312, a fixture slide plate 313, a lower sealing ring 314, and a fixture 315; the fixture support 311 includes a fixture support bottom plate 3111, four fixture support sliding columns 3112, two fixture support top plates 3113, and four fixture lifting sliding sleeves 3114. The fixture support bottom plate 3111 is fixed on the machine table 100, and the four fixture support sliding columns 3112 are fixed at the four corners of the fixture support bottom plate 3111. The two fixture support top plates 3113 are respectively fixed at the tops of two fixture support sliding columns 3112, and the four fixture lifting sliding sleeves 3114 are respectively sleeved outside the four fixture support sliding columns 3112; the fixture lifting driver 312 is vertically upward fixed in the middle of the fixture support bottom plate 3111. The fixture slide plate 313 is fixed on the four fixture lifting sliding sleeves 3114 and fixed on the output end of the fixture lifting driver 312. The fixture 315 is fixed in the middle of the fixture slide plate 313, and the lower sealing ring 314 is fixed inside the outer edge of the fixture slide plate 313, surrounding the fixture 315 for sealing the fixture 315 with the cavity cover mechanism; the fixture lifting driver 312 is used to drive the fixture slide plate 313 to rise along the fixture support sliding columns 3112 to seal the fixture 315 with the cavity cover mechanism for helium leak detection.

[0047] See Figure 4 and Figure 5 , Even further, the fixture 315 includes a fixture bottom plate 3151, two fixture front support columns 3152, two fixture rear support columns 3152A, a first fixture adjustment drive plate 3153, three first fixture adjustment linkage plates 3153A, a second fixture adjustment drive plate 3154, three second fixture adjustment linkage plates 3154A, three first fixture adjustment linkage rods 3155, three second fixture adjustment linkage rods 3155A, a first fixture adjustment drive nut 3156, a second fixture adjustment drive nut 3156A, a fixture adjustment double-headed lead screw 3157, sixteen first fixture adjustment sliding sleeves 3158, sixteen second fixture adjustment sliding sleeves 3158A, two first fixture adjustment sliding rods 3159, two second fixture adjustment sliding rods 3159A, a first fixture adjustment drive magnetic coupling 315A, eight fixture clamping plates 315B, four battery clamping positions 315C, and a fixture height benchmark 315D;

[0048] The fixture bottom plate 3151 is fixed on the middle part of the fixture slide plate 313. Two fixture front support columns 3152 are respectively fixed on the two ends in front of the fixture bottom plate 3151. Two fixture rear support columns 3152A are respectively fixed on the two ends behind the fixture bottom plate 3151. Two fixture adjustment first slide rods 3159 are respectively fixedly mounted on the upper and lower ends of the two fixture front support columns 3152. Sixteen fixture adjustment first slide sleeves 3158 are respectively sleeved on the two fixture adjustment first slide rods 3159, eight for each rod. Two fixture adjustment second slide rods 3159A are respectively fixedly mounted on the upper and lower ends of the two fixture rear support columns 3152A. Sixteen fixture adjustment second slide sleeves 3158A are respectively sleeved on the two fixture adjustment second slide rods 3159A, eight for each rod. The fixture adjustment double-headed lead screw 3157 is rotatably mounted on the middle parts of the two fixture front support columns 3152. The fixture adjustment first drive nut 3156 and the fixture adjustment second drive nut 3156A are respectively sleeved on the right end and the left end of the fixture adjustment double-headed lead screw 3157. The fixture adjustment first drive plate 3153 is fixed on the fixture adjustment first drive nut 3156 and on two fixture adjustment first slide sleeves 3158 and two fixture adjustment second slide sleeves 3158A on the right side. The fixture adjustment second drive plate 3154 is fixed on the fixture adjustment second drive nut 3156A and on two fixture adjustment first slide sleeves 3158 and two fixture adjustment second slide sleeves 3158A on the left side. Three fixture adjustment first linkage plates 3153A are respectively fixed on two fixture adjustment first slide sleeves 3158 and two fixture adjustment second slide sleeves 3158A in the middle part. Three fixture adjustment first linkage rods 3155 are respectively fixed between the fixture adjustment first drive plate 3153 and the three fixture adjustment first linkage plates 3153A. Three fixture adjustment second linkage plates 3154A are respectively fixed on two fixture adjustment first slide sleeves 3158 and two fixture adjustment second slide sleeves 3158A in the middle part. Three fixture adjustment second linkage rods 3155A are respectively fixed between the fixture adjustment second drive plate 3154 and the three fixture adjustment second linkage plates 3154A. The fixture adjustment drive first magnetic coupling 315A is fixed on the right end of the fixture adjustment double-headed lead screw 3157. Four fixture clamping plates 315B are respectively fixed on the left surfaces of the fixture adjustment first drive plate 3153 and the three fixture adjustment first linkage plates 3153A. Another four fixture clamping plates 315B are respectively fixed on the right surfaces of the fixture adjustment second drive plate 3154 and the three fixture adjustment second linkage plates 3154A. Four battery clamping positions 315C are formed between the adjacent and opposite fixture clamping plates 315B. The fixture height reference rod 315D is fixed outside the right surface of the fixture adjustment first drive plate 3153, above the fixture adjustment drive first magnetic coupling 315A, and is used to detect the position of the fixture 315 relative to the compatible fixture adjustment component 320;The jig adjustment double-headed lead screw 3157 can rotate to drive the jig adjustment first drive plate 3153 and the three jig adjustment first linkage plates 3153A to drive the four jig clamping plates 315B to move in unison. At the same time, it drives the jig adjustment second drive plate 3154 and the three jig adjustment second linkage plates 3154A to drive the four jig clamping plates 315B to move in the opposite direction in unison, so as to increase or decrease the width of the four battery clamping positions 315C formed between two adjacent and opposite jig clamping plates 315B. The jig 315 can clamp batteries 10 of various specifications.

[0049] See Figure 6 Furthermore, the compatible jig adjustment assembly 320 includes a jig adjustment bracket 321, a jig adjustment advance / retreat drive mounting plate 322, a jig adjustment slide group 323, a jig adjustment advance / retreat drive 324, a jig adjustment carriage 325, a jig adjustment limit member 326, a jig adjustment drive 327, a jig adjustment drive second magnetic coupling 328, and a jig height detector 329. The jig adjustment bracket 321 is fixed on the machine table 100, close to the compatible jig assembly 310. The jig adjustment advance / retreat drive mounting plate 322 is fixed on the top of the jig adjustment bracket 321. The slide rail of the jig adjustment slide group 323 is fixed on the top surface of the jig adjustment bracket 321, facing the compatible jig assembly 310. The jig adjustment advance / retreat drive 324 is horizontally fixed on the jig adjustment advance / retreat drive mounting plate 322. The jig adjustment carriage 325 is fixed on the output end of the jig adjustment advance / retreat drive 324 and the slider of the jig adjustment slide group 323. The jig adjustment drive 327 is horizontally fixed on the jig adjustment carriage 325. The jig adjustment drive second magnetic coupling 328 is fixed on the output end of the jig adjustment drive 327, facing and alignable with the jig adjustment drive first magnetic coupling 315A of the compatible jig assembly 310. The jig height detector 329 is fixed on the top surface of the jig adjustment bracket 321, facing and alignable with the jig height reference bar 315D of the compatible jig assembly 310, for detecting the position of the jig 315 relative to the compatible jig adjustment assembly 320. The jig adjustment limit member 326 is fixed on the top surface of the jig adjustment bracket 321, for limiting the position where the jig adjustment carriage 325 advances and engages with the jig adjustment drive first magnetic coupling 315A.

[0050] See Figure 7, Further, the cavity cover mechanism 400 further includes a cavity cover bracket 410, an upper sealing ring 420, a cavity body 430, and a vacuum pumping and helium leak detection assembly 440 for the sealed cavity. The cavity cover bracket 410 further includes a cavity cover bracket bottom plate 411, four cavity cover bracket columns 412 fixed at the four corners of the cavity cover bracket bottom plate 411, and a cavity cover bracket top plate 413 fixed on top of the four cavity cover bracket columns 412. The cavity body 430 is fixed under the cavity cover bracket top plate 413. The upper sealing ring 420 is arranged between the cavity body 430 and the cavity cover bracket top plate 413 for sealing the joint surface between the cavity body 430 and the cavity cover bracket top plate 413. The vacuum pumping and helium leak detection assembly 440 for the sealed cavity is fixed on the left side of the cavity cover bracket top plate 413 and communicates with the cavity body 430. The lifting type battery vacuum pumping and helium injection assembly 450 is fixed on the right side of the cavity cover bracket top plate 413 and communicates with the cavity body 430.

[0051] See Figure 8 , Even further, the vacuum pumping and helium leak detection assembly 440 for the sealed cavity includes a vacuum pumping pipeline 441, a vacuum pumping gate valve 442, a helium leak detection pipeline 443, a helium leak detection gate valve 444, an air gate valve 445, a muffler 446, a cleaning gas gate valve 447, and a vacuum gauge 448;

[0052] The vacuum pumping pipeline 441, the helium leak detection pipeline 443, and the vacuum gauge 448 are all vertically fixed on the left side of the cavity cover bracket top plate 413 and communicate with the cavity body 430. The vacuum pumping gate valve 442 is fixed on the vacuum pumping pipeline 441. The helium leak detection gate valve 444, the air gate valve 445, and the cleaning gas gate valve 447 are all fixed on the helium leak detection pipeline 443. The muffler 446 is fixed on the air gate valve 445.

[0053] See Figure 9 , Even further, the lifting type battery vacuum pumping and helium injection assembly 450 includes a battery vacuum pumping and helium injection bracket 451, a battery vacuum pumping and helium injection lifting drive bracket 452, a battery vacuum pumping and helium injection lifting drive 453, a battery vacuum pumping and helium injection lifting transmission lead screw 454, a battery vacuum pumping and helium injection lifting transmission nut 455, a battery vacuum pumping and helium injection lifting slide group 456, a battery vacuum pumping and helium injection lifting assembly 457, a battery vacuum pumping and helium injection lifting sealing assembly 458, and a battery vacuum pumping and helium injection fixing assembly 459;

[0054] The battery vacuuming and helium-injecting support 451 is vertically fixed on the right side of the top plate 413 of the cavity cover support. The battery vacuuming and helium-injecting lifting drive support 452 is fixed on the right surface of the battery vacuuming and helium-injecting support 451. The battery vacuuming and helium-injecting lifting drive 453 is vertically upward fixed on the battery vacuuming and helium-injecting lifting drive support 452. The battery vacuuming and helium-injecting lifting transmission lead screw 454 is fixed on the output end of the battery vacuuming and helium-injecting lifting drive 453 and is mounted on the battery vacuuming and helium-injecting support 451 and the battery vacuuming and helium-injecting lifting drive support 452. The battery vacuuming and helium-injecting lifting transmission nut 455 is sleeved on the battery vacuuming and helium-injecting lifting transmission lead screw 454. The slide rail of the battery vacuuming and helium-injecting lifting slide group 456 is fixed on the left surface of the battery vacuuming and helium-injecting support 451. The battery vacuuming and helium-injecting lifting assembly 457 is fixed on the battery vacuuming and helium-injecting lifting transmission nut 455 and the slider of the battery vacuuming and helium-injecting lifting slide group 456. The battery vacuuming and helium-injecting lifting sealing assembly 458 is docked with the battery vacuuming and helium-injecting lifting assembly 457 below and is fixed on the right side of the top plate 413 of the cavity cover support. The battery vacuuming and helium-injecting fixing assembly 459 is docked with the battery vacuuming and helium-injecting lifting assembly 457 above and is fixed on the top of the battery vacuuming and helium-injecting support 451. The battery vacuuming and helium-injecting lifting drive 453 can drive the battery vacuuming and helium-injecting lifting transmission nut 455 to drive the battery vacuuming and helium-injecting lifting assembly 457 to lower and seal the liquid injection hole of the battery for vacuuming and injecting helium after vacuuming.

[0055] See Figure 10 , Further, the battery vacuuming and helium-injecting lifting assembly 457 includes a battery vacuuming and helium-injecting lifting carriage 4571 and four battery vacuuming and helium-injecting lifting units 4572; the battery vacuuming and helium-injecting lifting carriage 4571 is fixed on the battery vacuuming and helium-injecting lifting transmission nut 455 and the slider of the battery vacuuming and helium-injecting lifting slide group 456. The four battery vacuuming and helium-injecting lifting units 4572 are evenly spaced and fixed under the battery vacuuming and helium-injecting lifting carriage 4571. The battery vacuuming and helium-injecting lifting unit 4572 includes a battery vacuuming and helium-injecting slide tube 45721, a battery vacuuming and helium-injecting slide tube air joint 45722, a battery vacuuming and helium-injecting pressure gauge 45723, and a battery vacuuming and helium-injecting nozzle sealing ring 45724; the battery vacuuming and helium-injecting slide tube 45721 is fixed under the battery vacuuming and helium-injecting lifting carriage 4571, passes through the battery vacuuming and helium-injecting lifting sealing assembly 458 and enters the cavity 430. The battery vacuuming and helium-injecting slide tube air joint 45722 and the battery vacuuming and helium-injecting pressure gauge 45723 are fixed on the battery vacuuming and helium-injecting slide tube 45721. The battery vacuuming and helium-injecting nozzle sealing ring 45724 is fixed on the lower end surface of the battery vacuuming and helium-injecting slide tube 45721.

[0056] SeeFigure 10 , further, the battery evacuation and helium injection lifting and sealing assembly 458 includes a battery evacuation and helium injection sealing fixing plate 4581 and four battery evacuation and helium injection sealing units 4582. The battery evacuation and helium injection sealing fixing plate 4581 is fixed on the top plate 413 of the cavity cover bracket. The four battery evacuation and helium injection sealing units 4582 are evenly spaced and fixed on the battery evacuation and helium injection sealing fixing plate 4581. The battery evacuation and helium injection sealing unit 458 includes a battery evacuation and helium injection sealing sliding sleeve 45821 and a battery evacuation and helium injection sealing ring 45822. The battery evacuation and helium injection sealing sliding sleeve 45821 is fixed on the battery evacuation and helium injection sealing fixing plate 4581 and is used to seal the joint surface between the battery evacuation and helium injection sliding pipe 45721 and the battery evacuation and helium injection sealing fixing plate 4581. The battery evacuation and helium injection sealing ring 45822 is arranged between the battery evacuation and helium injection sealing fixing plate 4581 and the top plate 413 of the cavity cover bracket and is used to seal the joint surface between the battery evacuation and helium injection sealing fixing plate 4581 and the top plate 413 of the cavity cover bracket.

[0057] See Figure 10 , further, the battery evacuation and helium injection fixing assembly 459 includes four battery evacuation and helium injection fixing units 4591. The four battery evacuation and helium injection fixing units 4591 are evenly spaced and fixed on the battery evacuation and helium injection bracket 451. The battery evacuation and helium injection fixing unit 4591 includes a battery evacuation and helium injection fixing pipe 45911, a battery evacuation and helium injection fixing pipe gas joint 45912 and a battery evacuation and helium injection gate valve 45913. The battery evacuation and helium injection fixing pipe 45911 is fixed on the battery evacuation and helium injection bracket 451. The battery evacuation and helium injection fixing pipe gas joint 45912 is fixed at the lower end of the battery evacuation and helium injection fixing pipe 45911 and is connected to the battery evacuation and helium injection sliding pipe 45721 through a hose. The battery evacuation and helium injection gate valve 45913 is fixed at the upper end of the battery evacuation and helium injection fixing pipe 45911 and is used to control the battery evacuation and helium injection.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compatible helium inspection device, comprising a machine platform (100), a translation mechanism (200), a compatible battery fixture (300) and a cavity cover mechanism (400); the translation mechanism (200) comprises a translation base plate (210) and a linear module (220); the translation base plate (210) is fixed on the machine platform (100); the linear module (220) is horizontally fixed on the translation base plate (210); the compatible battery fixture (300) is fixed on the output end of the linear module (220); the cavity cover mechanism (400) is fixed on the machine platform (100) and is arranged across the linear module (220); ), the linear module (220) is used to drive the compatible battery fixture (300) to enter and exit the cavity cover mechanism (400), the compatible battery fixture (300) includes a compatible fixture component (310) and an adjacent compatible fixture adjustment component (320), when the compatible battery fixture (300) enters the cavity cover mechanism (400) for alignment, the compatible fixture component (310) can be raised to fit closely with the cavity cover mechanism (400) to form a sealed cavity for helium inspection, when the compatible battery fixture (300) is completely moved out of the cavity cover mechanism (400), the battery can be loaded and unloaded, characterized in that, The compatible jig adjustment component (320) can adjust the width of the battery clamping position (315C) of the compatible jig component (310) that clamps the battery in the battery width direction, so that the compatible jig component (310) can be compatible with clamping batteries (10) of various lengths, widths and heights. The cavity cover mechanism (400) includes a lifting battery vacuum pumping and helium injection component (450). The lifting battery vacuum pumping and helium injection component (450) can adjust the height of the helium injection nozzle, and can be compatible with vacuum pumping and helium testing of batteries of various heights. The compatible helium testing device can be compatible with helium testing of batteries of various specifications.

2. According to the compatible helium detection device of claim 1, the compatible fixture assembly (310) of the compatible battery fixture (300) comprises a fixture bracket (311), a fixture lifting driver (312), a fixture slide plate (313), a lower sealing ring (314), and a fixture (315); the fixture bracket (311) comprises a fixture bracket bottom plate (3111), four fixture bracket slide columns (3112), two fixture bracket top plates (3113) and four fixture lifting sleeves (3114); the fixture bracket bottom plate (3111) is fixed on the machine platform (100), the four fixture bracket slide columns (3112) are fixed on the four corners of the fixture bracket bottom plate (3111), the two fixture bracket top plates (3113) are respectively fixed on the tops of the two fixture bracket slide columns (3112), and the four fixture lifting sleeves (3114) are fixed on the bottom plate (3111). The jig lifting sleeves (3114) are respectively sleeved on the outside of the four jig support slides (3112); the jig lifting driver (312) is vertically fixed upward on the middle part of the jig support bottom plate (3111); the jig slide plate (313) is fixed on the four jig lifting sleeves (3114) and on the output end of the jig lifting driver (312); the jig (315) is fixed on the middle part of the jig slide plate (313); the lower sealing ring (314) is fixed on the outer edge of the jig slide plate (313) and is located around the jig (315) to seal the jig (315) with the cavity cover mechanism; the jig lifting driver (312) is used to drive the jig slide plate (313) to rise along the jig support slide column (3112) and seal the jig (315) with the cavity cover mechanism for helium inspection.

3. The compatible helium detection device according to claim 2, wherein the fixture (315) comprises a fixture bottom plate (3151), two fixture front pillars (3152), two fixture rear pillars (3152A), a fixture adjustment first drive plate (3153), three fixture adjustment first linkage plates (3153A), a fixture adjustment second drive plate (3154), three fixture adjustment second linkage plates (3154A), three fixture adjustment first linkage rods (3155), three fixture adjustment second linkage rods (3155A), a fixture adjustment The first drive nut (3156) is adjusted, the second drive nut (3156A) is adjusted by the jig, the double-headed screw rod (3157) is adjusted by the jig, sixteen first sliding sleeves (3158) are adjusted by the jig, sixteen second sliding sleeves (3158A) are adjusted by the jig, two first sliding rods (3159) are adjusted by the jig, two second sliding rods (3159A) are adjusted by the jig, the first magnetic coupling (315A) is driven by the jig, eight jig clamps (315B), four battery clamping positions (315C) and a jig height bar (315D); The jig base plate (3151) is fixed on the middle part of the jig slide plate (313), the two jig front pillars (3152) are respectively fixed on the two ends in front of the jig base plate (3151), the two jig rear pillars (3152A) are respectively fixed on the two ends behind the jig base plate (3151), the two jig adjustment first sliding rods (3159) are respectively fixedly mounted on the upper and lower ends of the two jig front pillars (3152), the sixteen jig adjustment first sliding sleeves (3158) are respectively mounted on the two jig adjustment first sliding rods (3159) with eight of each, and the two jig adjustment second sliding rods (3159A) are respectively fixedly mounted on the two jig rear pillars The upper and lower ends of the jig (3152A), the sixteen jig adjustment second sliding sleeves (3158A) are respectively mounted on the two jig adjustment second sliding rods (3159A) with eight pieces in each, the jig adjustment double-headed screw rod (3157) is rotatably mounted on the middle of the two jig front pillars (3152), the jig adjustment first driving nut (3156) and the jig adjustment second driving nut (3156A) are respectively mounted on the right end and the left end of the jig adjustment double-headed screw rod (3157), the jig adjustment first driving plate (3153) is fixed on the jig adjustment first driving nut (3156) and the two jig adjustment first sliding sleeves (3158) and the two jig adjustment first sliding sleeves (3158) on the right and the two jig adjustment first sliding sleeves (3158) on the left and the two jig adjustment first sliding sleeves (3158) on the right ... The jig adjustment second sliding sleeve (3158A) is fixed to the jig adjustment second driving plate (3154) and the jig adjustment second driving nut (3156A) and the two jig adjustment first sliding sleeves (3158) and the two jig adjustment second sliding sleeves (3158A) on the left. The three jig adjustment first linkage plates (3153A) are respectively fixed to the two jig adjustment first sliding sleeves (3158) and the two jig adjustment second sliding sleeves (3158A) in the middle. The three jig adjustment first linkage rods (3155) are respectively fixed between the jig adjustment first driving plate (3153) and the three jig adjustment first linkage plates (3153A). The second linkage plate (3154A) for jig adjustment is respectively fixed on two first sliding sleeves (3158) for jig adjustment and two second sliding sleeves (3158A) for jig adjustment in the middle, three second linkage rods (3155A) for jig adjustment are respectively fixed between the second driving plate (3154) for jig adjustment and the three second linkage plates (3154A) for jig adjustment, the first magnetic coupling (315A) for jig adjustment drive is fixed on the right end of the double-headed screw (3157) for jig adjustment, and four jig clamping plates (315B) are respectively fixed on the left side of the first driving plate (3153) for jig adjustment and the three first linkage plates (3153A) for jig adjustment,The other four jig clamps (315B) are respectively fixed on the right side of the jig adjustment second drive plate (3154) and the three jig adjustment second linkage plates (3154A), and four battery clamping positions (315C) are formed between the jig clamps (315B) adjacent to each other. The jig height benchmark (315D) is fixed outside the right side of the jig adjustment first drive plate (3153), located above the jig adjustment drive first magnetic coupling (315A), and is used to detect the position of the jig (315) relative to the compatible jig adjustment component (320); the jig adjustment double-head The screw rod (3157) can rotate to drive the first jig adjustment drive plate (3153) and the three first jig adjustment linkage plates (3153A) to move in unison with the four jig clamps (315B), and at the same time drive the second jig adjustment drive plate (3154) and the three second jig adjustment linkage plates (3154A) to move in unison with the four jig clamps (315B) to increase or decrease the width of the four battery clamping positions (315C) formed between the jig clamps (315B) that are adjacent to each other. The jig (315) can clamp batteries (10) of various specifications.

4. The compatible helium detection device according to claim 3, wherein the compatible jig adjustment assembly (320) comprises a jig adjustment bracket (321), a jig adjustment advance and retreat driver mounting plate (322), a jig adjustment slide group (323), a jig adjustment advance and retreat driver (324), a jig adjustment slide (325), a jig adjustment stopper (326), a jig adjustment driver (327), a jig adjustment driver second magnetic coupling (328), and a jig height detector (329); The jig adjustment bracket (321) is fixed on the machine platform (100) and is close to the compatible jig assembly (310). The jig adjustment advance and retreat driver mounting plate (322) is fixed on the top of the jig adjustment bracket (321). The slide rail of the jig adjustment slide group (323) is fixed on the top surface of the jig adjustment bracket (321) and faces the compatible jig assembly (310). The jig adjustment advance and retreat driver (324) is horizontally fixed on the jig adjustment advance and retreat driver mounting plate (322). The jig adjustment slide (325) is fixed on the output end of the jig adjustment advance and retreat driver (324) and on the slide block of the jig adjustment slide group (323). The jig adjustment driver (327) is horizontally fixed on the jig adjustment slide (325). The second magnetic coupling (328) of the jig adjustment drive is fixed on the output end of the jig adjustment driver (327), facing and aligned with the first magnetic coupling (315A) of the jig adjustment drive of the compatible jig assembly (310); the jig height detector (329) is fixed on the top surface of the jig adjustment bracket (321), facing and aligned with the jig height benchmark (315D) of the compatible jig assembly (310), and is used to detect the position of the jig (315) relative to the compatible jig adjustment assembly (320); the jig adjustment limiter (326) is fixed on the top surface of the jig adjustment bracket (321), and is used to limit the jig adjustment slide (325) from moving forward to attract the position of the first magnetic coupling (315A) of the jig adjustment drive.

5. According to the compatible helium detection device of claim 1, the chamber cover mechanism (400) further comprises a chamber cover support (410), an upper sealing ring (420), a chamber body (430) and a sealed chamber vacuum pumping and helium detection assembly (440), the chamber cover support (410) further comprises a chamber cover support bottom plate (411), four chamber cover support columns (412) fixed at four corners of the chamber cover support bottom plate (411) and a chamber cover support top plate (413) fixed on the tops of the four chamber cover support columns (412), the chamber body (430) is fixed on the chamber cover Under the cover bracket top plate (413), the upper sealing ring (420) is arranged between the cavity (430) and the cavity cover bracket top plate (413) for sealing the joint surface between the cavity (430) and the cavity cover bracket top plate (413); the sealed cavity vacuum pumping and helium detection component (440) is fixed on the left side of the cavity cover bracket top plate (413) and is connected to the cavity (430); the lifting battery vacuum pumping and helium injection component (450) is fixed on the right side of the cavity cover bracket top plate (413) and is connected to the cavity (430).

6. According to the compatible helium detection device of claim 5, the sealed chamber vacuum and helium detection assembly (440) comprises a vacuum pipeline (441), a vacuum gate valve (442), a helium detection pipeline (443), a helium detection gate valve (444), an air gate valve (445), a muffler (446), a cleaning air gate valve (447) and a vacuum gauge (448); The vacuum pumping pipe (441), the helium detection pipe (443) and the vacuum gauge (448) are all vertically fixed on the left side of the chamber cover bracket top plate (413) and connected to the chamber (430); the vacuum pumping gate valve (442) is fixed on the vacuum pumping pipe (441); the helium detection gate valve (444), the air gate valve (445) and the cleaning air gate valve (447) are all fixed on the helium detection pipe (443); and the muffler (446) is fixed on the air gate valve (445).

7. According to the compatible helium detection device of claim 5, the lifting type battery vacuum and helium injection component (450) comprises a battery vacuum and helium injection bracket (451), a battery vacuum and helium injection lifting driver bracket (452), a battery vacuum and helium injection lifting driver (453), a battery vacuum and helium injection lifting transmission screw (454), a battery vacuum and helium injection lifting transmission nut (455), a battery vacuum and helium injection lifting slide group (456), a battery vacuum and helium injection lifting component (457), a battery vacuum and helium injection lifting sealing component (458) and a battery vacuum and helium injection fixing component (459); The battery vacuum and helium injection bracket (451) is vertically fixed on the right side of the chamber cover bracket top plate (413), the battery vacuum and helium injection lifting driver bracket (452) is fixed on the right side of the battery vacuum and helium injection bracket (451), the battery vacuum and helium injection lifting driver (453) is vertically fixed on the battery vacuum and helium injection lifting driver bracket (452), the battery vacuum and helium injection lifting drive screw (454) is fixed on the output end of the battery vacuum and helium injection lifting driver (453) and is mounted on the battery vacuum and helium injection bracket (451) and the battery vacuum and helium injection lifting driver bracket (452), the battery vacuum and helium injection lifting drive nut (455) is sleeved on the battery vacuum and helium injection lifting drive screw (454), and the slide rail of the battery vacuum and helium injection lifting slide group (456) is fixed on the battery On the left side of the vacuum and helium injection bracket (451), the battery vacuum and helium injection lifting component (457) is fixed on the battery vacuum and helium injection lifting transmission nut (455) and the slider of the battery vacuum and helium injection lifting slide group (456); the battery vacuum and helium injection lifting sealing component (458) is docked with the battery vacuum and helium injection lifting component (457) at the bottom and fixed on the right side of the chamber cover bracket top plate (413); the battery vacuum and helium injection fixing component (459) is docked with the battery vacuum and helium injection lifting component (457) at the top and fixed on the top of the battery vacuum and helium injection bracket (451); the battery vacuum and helium injection lifting driver (453) can drive the battery vacuum and helium injection lifting transmission nut (455) to carry the battery vacuum and helium injection lifting component (457) to descend and seal the injection hole of the battery to vacuumize and inject helium after vacuumization.

8. According to the compatible helium detection device of claim 7, the battery vacuum and helium injection lifting assembly (457) comprises a battery vacuum and helium injection lifting carriage (4571) and four battery vacuum and helium injection lifting units (4572); The battery vacuum and helium injection lifting carriage (4571) is fixed on the battery vacuum and helium injection lifting transmission nut (455) and the slider of the battery vacuum and helium injection lifting slide group (456). Four battery vacuum and helium injection lifting units (4572) are evenly spaced and fixed under the battery vacuum and helium injection lifting carriage (4571). The battery vacuum and helium injection lifting units (4572) include a battery vacuum and helium injection sliding pipe (45721), a battery vacuum and helium injection sliding pipe gas joint (45722), a battery vacuum and helium injection pressure gauge (45723) and a battery vacuum and injection The battery vacuum and helium injection slide tube (45721) is fixed under the battery vacuum and helium injection lifting slide (4571), passes through the battery vacuum and helium injection lifting sealing assembly (458) and enters the cavity (430), the battery vacuum and helium injection slide tube gas joint (45722) and the battery vacuum and helium injection pressure gauge (45723) are fixed on the battery vacuum and helium injection slide tube (45721), and the battery vacuum and helium injection nozzle sealing ring (45724) is fixed on the lower end surface of the battery vacuum and helium injection slide tube (45721).

9. According to the compatible helium detection device of claim 8, the battery vacuum and helium injection lifting and sealing assembly (458) comprises a battery vacuum and helium injection sealing fixing plate (4581) and four battery vacuum and helium injection sealing units (4582), the battery vacuum and helium injection sealing fixing plate (4581) is fixed on the top plate of the chamber cover bracket (413), the four battery vacuum and helium injection sealing units (4582) are evenly spaced and fixed on the battery vacuum and helium injection sealing fixing plate (4581), the battery vacuum and helium injection sealing unit 458 comprises a battery vacuum and helium injection sealing sleeve (45821) and a battery vacuum and The battery vacuum and helium injection sealing sleeve (45821) is fixed on the battery vacuum and helium injection sealing fixing plate (4581) to seal the joint surface between the battery vacuum and helium injection sliding tube (45721) and the battery vacuum and helium injection sealing fixing plate (4581); the battery vacuum and helium injection sealing ring (45822) is arranged between the battery vacuum and helium injection sealing fixing plate (4581) and the cavity cover bracket top plate (413) to seal the joint surface between the battery vacuum and helium injection sealing fixing plate (4581) and the cavity cover bracket top plate (413).

10. According to the compatible helium detection device of claim 8, the battery vacuum and helium injection fixing assembly (459) comprises four battery vacuum and helium injection fixing units (4591), the four battery vacuum and helium injection fixing units (4591) are evenly spaced and fixed on the battery vacuum and helium injection bracket (451), and the battery vacuum and helium injection fixing unit (4591) comprises a battery vacuum and helium injection fixing pipe (45911), a battery vacuum and helium injection fixing pipe gas joint (45912) and a battery vacuum and helium injection gate valve (45913); the battery vacuum and helium injection fixed tube (45911) is fixed on the battery vacuum and helium injection bracket (451), the battery vacuum and helium injection fixed tube gas joint (45912) is fixed at the lower end of the battery vacuum and helium injection fixed tube (45911), connected to the battery vacuum and helium injection slide tube (45721) through a hose, and the battery vacuum and helium injection gate valve (45913) is fixed at the upper end of the battery vacuum and helium injection fixed tube (45911) for controlling the battery vacuum and helium injection.

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