Helium detection device with one cavity and two areas

Abstract

The utility model provides a one-cavity two-area helium detection device. The one-cavity two-area helium detection device comprises a cavity transfer linear module, a cavity mechanism, a cavity cover mechanism and two cavity dust collection mechanisms, the cavity transferring linear module is provided with a feeding and discharging position, a dust collection position and a helium detection position from right to left, the cavity mechanism is fixed to the output end of the cavity transferring linear module, the cavity cover mechanism is arranged above the left end of the cavity transferring linear module in a crossing mode, and the two cavity dust collection mechanisms are located on the front side and the rear side of the middle of the cavity transferring linear module respectively. The cavity transfer linear module can drive the cavity mechanism, the cavity mechanism can feed and discharge batteries when arriving at the feeding and discharging position, the cavity mechanism and the batteries can be cleaned through dust collection by aligning the two cavity dust collection mechanisms, and the cavity mechanism can be covered with the cavity cover mechanism to form a sealed cavity for helium detection when entering the cavity cover mechanism. The two lower cavity subareas of the cavity mechanism and the two upper cavity subareas of the cavity cover mechanism are covered to form two independent sealing cavities for helium detection of a plurality of batteries, the helium detection efficiency is high, and the efficiency loss of redetection needed when leaked batteries are detected is small.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery manufacturing equipment technical field especially relates to a one-cavity two-zone helium detection device. BACKGROUND

[0002] The single cell (referred to as battery hereinafter) of the lithium battery is a sealed container containing an inner cell and anhydrous electrolyte. The poor sealing of the battery will cause the battery to leak electrolyte during use, and more seriously, water vapor will penetrate into the battery, which will condense into water and enter the electrolyte, thereby damaging the insulation performance of the internal electrochemical system of the battery. A small amount of water will cause an abnormally large current during the charging process of the battery, resulting in abnormal heating, explosion and combustion. The sealing of the battery is related to the safety of the battery and the device using the battery, such as an electric vehicle.

[0003] The industry uses helium as a tracer gas for leak detection to detect air tightness, commonly known as helium detection. Generally, positive pressure helium detection is used to detect the leakage of helium from the inside to the outside of the battery. Before detection, the battery top cover is welded, vacuumed to below 2KPa through the liquid injection hole, and then filled with helium to 95±5KPa for detection, which is called pre-helium detection. Before the battery is sealed with a nail cover plate, helium is filled into the battery to 95±5KPa, and then welded to seal the helium in the battery. The helium detection after the welding of the nail cover plate is called post-helium detection.

[0004] During detection, the battery is placed in a sealed cavity, and a vacuum pump is used to form a pressure difference between the inside and outside of the battery to cause helium to leak from the inside to the outside of the battery through possible leak welding, cracks, pores, slag, etc. The vacuum pump extracts the vacuum cavity that may contain the leaked helium to the helium detector. After a certain period of time, when the speed of the detection pump extracting the helium from the vacuum chamber for detection by the helium detector is equal to the speed of the battery leaking helium into the vacuum chamber, i.e. the balance of the detected helium and the leaked helium, the flow rate of the helium detected per unit time is the helium leakage rate of the battery.

[0005] The leakage of the sealed container is absolute, and the non-leakage is relative. The air tightness of the battery is qualified at 23 DEG C, and the helium leakage rate is greater than or equal to 9.9*10 -7 Pa·m 3 / s, otherwise it is unqualified. According to the standard, the unqualified products are detected and removed to ensure that the sealing performance of the battery entering the use is qualified, thereby ensuring the safety performance of the battery entering the use.

[0006] Therefore, we develop a one-cavity two-zone helium detection device for high-speed detection of the sealing performance of the battery. Utility model content

[0007] The utility model aims at providing a one-cavity two-zone helium detection device for high-speed detection of the sealing performance of the battery.

[0008] A one-cavity two-zone helium detection device, comprising a cavity transfer linear module, a cavity mechanism, a cavity cover mechanism and two cavity dust suction mechanisms; the cavity transfer linear module is horizontally fixed on an external machine table, and is provided with an upper and lower loading position, a dust suction position and a helium detection position from right to left; the cavity mechanism is fixed on the output end of the cavity transfer linear module; the cavity cover mechanism is fixed on the external machine table and is located above the left end of the cavity transfer linear module and at the helium detection position; the two cavity dust suction mechanisms are fixed on the external machine table and are located at the front and rear of the middle part of the cavity transfer linear module and at the dust suction position; the cavity transfer linear module can drive the cavity mechanism to reciprocate left and right; the cavity mechanism can load and unload batteries at the upper and lower loading position at the right end; the cavity mechanism can be cleaned by the two cavity dust suction mechanisms at the dust suction position; the cavity mechanism can be sealed with the cavity cover mechanism to form a sealed cavity for helium detection at the helium detection position; characterized in that: the cavity mechanism comprises a cavity, two lower cavity partitions are arranged on the cavity, the cavity cover mechanism comprises a cavity cover, two upper cavity partitions are arranged on the cavity cover, and the two lower cavity partitions of the cavity mechanism and the two upper cavity partitions of the cavity cover mechanism are combined to form two independent sealed cavities for helium detection of multiple batteries.

[0009] Further, the cavity mechanism further comprises a cavity support bottom plate, four cavity lifting guide columns, four cavity lifting guide sleeves, two cavity lifting stop plates, a cavity lifting driver, a cavity lifting slide plate, two lower battery cavity sealing rings, two cavity gas connectors, and two cavity gas connector sealing rings. The cavity support bottom plate is fixed on the output end of the cavity transfer linear module. The four cavity lifting guide columns are respectively fixed on the four corners of the cavity support bottom plate. The four cavity lifting guide sleeves are respectively sleeved on the four cavity lifting guide columns. The two cavity lifting stop plates are respectively fixed on the top of the left and right two cavity lifting guide columns. The cavity lifting driver is vertically fixed on the middle part of the cavity support bottom plate. The cavity lifting slide plate is fixed on the output end of the cavity lifting driver and is fixed on the four cavity lifting guide sleeves. The cavity is fixed on the cavity lifting slide plate. The cavity comprises a cavity body, a plurality of lower chambers, and two cavity sealing grooves. The cavity body is fixed on the cavity lifting slide plate. The top plane of the cavity body is provided with two rows of front and rear lower chambers that are uniformly spaced from left to right, vertically downward, and have a preset diameter and depth, which match and accommodate the batteries. The two cavity sealing grooves are respectively arranged outside each of the plurality of lower chambers in the two rows of front and rear lower chambers. Each of the plurality of lower chambers in the two cavity sealing grooves forms a front or rear lower chamber subarea. The two lower battery cavity sealing rings are respectively fixed in the two cavity sealing grooves. The two cavity gas connectors are respectively fixed on the middle parts of the front and rear sides of the cavity. The cavity gas connector comprises a cavity gas connector body, a cavity gas connector air hole, and a cavity gas connector sealing groove. The two cavity gas connector bodies are respectively fixed on the middle parts of the front and rear sides of the cavity. The top plane of the two cavity gas connector bodies is provided with a vertically downward cavity gas connector air hole. The cavity gas connector air hole respectively communicates each of the plurality of lower chambers in the front and rear lower chamber subareas. The cavity gas connector sealing groove is arranged around the cavity gas connector air hole. The two cavity gas connector sealing rings are respectively fixed in the two cavity gas connector sealing grooves. The cavity lifting driver can drive the cavity lifting slide plate with the cavity lifting.

[0010] Further, the cavity cover mechanism further comprises a cavity cover support, a battery vacuumizing and helium injecting control assembly and two sealed cavity vacuumizing and helium detecting control assemblies; the cavity cover support comprises two cavity cover support bottom plates, four cavity cover support vertical columns and two cavity cover support top plates, the two cavity cover support bottom plates are fixed on the external machine table, are located on the left and right sides of the cavity body moving and loading linear module, are located at the helium detecting position, the four cavity cover support vertical columns are fixed on the two cavity cover support bottom plates, the two cavity cover support top plates are fixed on the top of the four cavity cover support vertical columns, and the cavity cover is fixed below the cavity cover support top plates; the cavity cover comprises a cavity cover body and a plurality of upper cavities, the cavity cover body is fixed below the cavity cover support top plates, is provided with two rows of upper cavities corresponding to the lower cavities of the cavity cover mechanism in terms of number, diameter, depth and interval distance, a plurality of upper cavities in the two rows of upper cavities become two upper cavity partitions corresponding to the two lower cavity partitions of the cavity cover mechanism respectively, the battery vacuumizing and helium injecting control assembly is fixed on the cavity cover support top plates, is connected with the upper cavities, and the battery vacuumizing and helium injecting control assembly is used for vacuumizing, injecting helium, returning helium after helium detection and breaking vacuum of the battery after returning helium.

[0011] Further, the battery vacuumizing and helium injecting control assembly comprises two upper cavity partition branch pipes, two vacuum gauges, two isolation gate valves, a vacuumizing pipe manifold, two vacuumizing gate valves, two helium injecting gate valves, a helium returning gate valve and two vacuum breaking gate valves; the two upper cavity partition branch pipes are fixed on the cavity cover body of the cavity cover in front and back respectively, are connected with a plurality of upper cavities of the two upper cavity partitions respectively, the two vacuum gauges are fixed on the two upper cavity partition branch pipes respectively, one end of the two isolation gate valves is fixed on the upper portions of the two upper cavity partition branch pipes respectively, the vacuumizing pipe manifold is fixed on the other end of the two isolation gate valves, the two vacuumizing gate valves, the two helium injecting gate valves, the helium returning gate valve and the two vacuum breaking gate valves are fixed on the vacuumizing pipe manifold respectively, and the battery vacuumizing and helium injecting control assembly is used for vacuumizing, injecting helium, returning helium after helium detection and breaking vacuum of the battery after returning helium.

[0012] Further, the sealed cavity vacuumizing helium leak detection control assembly comprises a helium leak detection tapping pipe mounting member, a helium leak detection tapping pipe, a helium leak detection pipe manifold, a vacuum gauge, two helium leak detection gate valves, a helium leak detection calibration gate valve, a standard leak sample, a helium leak detection vacuum breaking gate valve and a helium leak detection vacuum breaking silencer; the helium leak detection tapping pipe mounting member is fixed on the cavity cover body of the cavity cover, the helium leak detection tapping pipe is elastically arranged in the helium leak detection tapping pipe mounting member, the helium leak detection pipe manifold is fixed on the helium leak detection tapping pipe, the vacuum gauge, the two helium leak detection gate valves, the helium leak detection calibration gate valve and the helium leak detection vacuum breaking gate valve are fixed on the helium leak detection pipe manifold, the standard leak sample is fixed below the helium leak detection calibration gate valve, and the helium leak detection vacuum breaking silencer is fixed on the helium leak detection vacuum breaking gate valve; the sealed cavity vacuumizing helium leak detection control assembly is used for vacuumizing the sealed cavity, helium leak detection air extraction and helium leak detection vacuum breaking of the sealed cavity.

[0013] Further, the cavity dust suction mechanism comprises a cavity dust suction support column, a cavity dust suction suction plate lifting driver mounting member, a cavity dust suction suction plate lifting driver, a cavity dust suction suction plate mounting member and a cavity dust suction suction plate; the cavity dust suction support column is fixed on the front edge or the rear edge of the middle part of the cavity transfer linear module and is located at a dust suction position, the cavity dust suction suction plate lifting driver mounting member is fixed on the top of the cavity dust suction support column, the cavity dust suction suction plate lifting driver is vertically upwardly fixed on the cavity dust suction suction plate lifting driver mounting member, the cavity dust suction suction plate mounting member is fixed on the output end of the cavity dust suction suction plate lifting driver, and the cavity dust suction suction plate is fixed below the cavity dust suction suction plate mounting member; the cavity dust suction suction plate lifting driver is used for driving the cavity dust suction suction plate mounting member to lower the cavity dust suction suction plate and clean the cavity mechanism and the battery.

[0014] The one-cavity two-zone helium leak detection device has the following beneficial effects:

[0015] The cavity mechanism is provided with two lower cavity sub-zones, and the cavity cover mechanism is provided with two upper cavity sub-zones; the two lower cavity sub-zones of the cavity mechanism and the two upper cavity sub-zones of the cavity cover mechanism are combined to form two independent sealed cavities for helium leak detection of multiple batteries, and the helium leak detection efficiency is higher than that of multiple single sealed cavities; when a battery with a leak is detected, only one sealed cavity of the battery with a leak needs to be rechecked, thereby causing less efficiency loss. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the one-cavity two-zone helium leak detection device;

[0017] Figure 2 A structure diagram of the cavity mechanism;

[0018] Figure 3 A structure diagram of the cavity cover mechanism;

[0019] Figure 4 A structure diagram of the battery vacuumizing and helium injecting control assembly;

[0020] Figure 5Sealing cavity vacuum pumping helium detection control assembly structure diagram

[0021] Figure 6 Cavity dust suction mechanism structure diagram.

[0022] Reference signs:

[0023] 300, two-zone helium detection device in one cavity

[0024] 310, cavity transfer linear module

[0025] 320, cavity mechanism; 321, cavity support bottom plate; 322, cavity lifting guide column; 323, cavity lifting guide sleeve; 324, cavity lifting stop plate; 325, cavity lifting driver; 326, cavity lifting slide plate; 327, cavity; 3271, cavity body; 3272, lower chamber; 3273, cavity sealing groove; 3274, lower cavity partition; 328, lower battery cavity sealing ring; 329, cavity gas connector; 3291, cavity gas connector body; 3292, cavity gas connector air hole; 3293, cavity gas connector sealing groove; 32A, cavity gas connector sealing ring

[0026] 330, cavity cover mechanism

[0027] 331, cavity cover support; 3311, cavity cover support bottom plate; 3312, cavity cover support column; 3313, cavity cover support top plate

[0028] 332, cavity cover; 3321, cavity cover body; 3322, upper chamber; 3323, upper cavity partition

[0029] 333, battery vacuum pumping helium injection control assembly; 3331, upper cavity partition tapping pipe; 3332, vacuum gauge; 3333, isolation gate valve; 3334, vacuum pumping manifold; 3335, vacuum pumping gate valve; 3336, helium injection gate valve; 3337, helium return gate valve; 3338, vacuum breaking gate valve

[0030] 334, sealing cavity vacuum pumping helium detection control assembly; 3341, helium detection tapping pipe mounting; 3342, helium detection tapping pipe; 3343, helium detection pipe manifold; 3344, vacuum gauge; 3345, helium detection gate valve; 3346, helium detection calibration gate valve; 3347, standard leak sample; 3348, helium detection vacuum breaking gate valve; 3349, helium detection vacuum breaking silencer

[0031] 340, cavity dust suction mechanism; 341, cavity dust suction support column; 342, cavity dust suction suction plate lifting driver mounting; 343, cavity dust suction suction plate lifting driver; 344, cavity dust suction suction plate mounting; 345, cavity dust suction suction plate

[0032] 360, blanking position; 370, dust suction position; 380, helium detection position. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will combine with the drawings and examples, and make the utility model further detailed description. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0034] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two components. For ordinary skilled in the art, the specific meaning of the terms in the utility model can be understood according to the specific circumstances.

[0035] Reference Figure 1The embodiment provides a one-cavity two-zone helium detection device 300 for sealing detection of a battery, which comprises a cavity transfer linear module 310, a cavity mechanism 320, a cavity cover mechanism 330 and two cavity dust suction mechanisms 340; the cavity transfer linear module 310 is horizontally fixed on an external machine table, and is provided with an upper and lower loading position 360, a dust suction position 370 and a helium detection position 380 from right to left; the cavity mechanism 320 is fixed on the output end of the cavity transfer linear module 310; the cavity cover mechanism 330 is fixed on the external machine table and is arranged above the left end of the cavity transfer linear module 310 and located at the helium detection position 380; the two cavity dust suction mechanisms 340 are fixed on the external machine table and are respectively located at the front and rear sides of the middle part of the cavity transfer linear module 310 and at the dust suction position 370; the cavity transfer linear module 310 can drive the cavity mechanism 320 to reciprocate left and right, the cavity mechanism 320 can load and unload the battery at the upper and lower loading position 360 at the right end; the cavity mechanism 320 can be cleaned by the two cavity dust suction mechanisms 340 at the dust suction position 370; the cavity mechanism 320 can be combined with the cavity cover mechanism 330 to form a sealed cavity for helium detection at the helium detection position 380; characterized in that: the cavity mechanism 320 comprises a cavity 327, two lower cavity partitions 3274 are arranged on the cavity 327, the cavity cover mechanism 330 comprises a cavity cover 332, two upper cavity partitions 3323 are arranged on the cavity cover 332, and the two lower cavity partitions 3274 of the cavity mechanism 320 and the two upper cavity partitions 3323 of the cavity cover mechanism 330 are combined to form two independent sealed cavities for helium detection of multiple batteries. Compared with multiple single sealed cavities, the helium detection efficiency is high, and when a battery with leakage is detected, only the multiple batteries in one sealed cavity of the battery with leakage need to be rechecked, so that the efficiency loss is small.

[0036] Referring to Figure 2Further, the cavity mechanism 320 further comprises a cavity bracket bottom plate 321, four cavity lifting guide columns 322, four cavity lifting guide sleeves 323, two cavity lifting stop plates 324, a cavity lifting driver 325, a cavity lifting sliding plate 326, two lower battery cavity sealing rings 328, two cavity gas connectors 329 and two cavity gas connector sealing rings 32A; the cavity bracket bottom plate 321 is fixed on the output end of the cavity transfer linear module 310, the four cavity lifting guide columns 322 are respectively fixed on the four corners of the cavity bracket bottom plate 321, the four cavity lifting guide sleeves 323 are respectively sleeved on the four cavity lifting guide columns 322, the two cavity lifting stop plates 324 are respectively fixed on the top of the left and right two cavity lifting guide columns 322, the cavity lifting driver 325 is vertically fixed on the middle part of the cavity bracket bottom plate 321, the cavity lifting sliding plate 326 is fixed on the output end of the cavity lifting driver 325 and is fixed on the four cavity lifting guide sleeves 323, the cavity 327 is fixed on the cavity lifting sliding plate 326, and the cavity 327 comprises a cavity body 3271, a plurality of lower chambers 3272 and two cavity sealing grooves 3273; the cavity body 3271 is fixed on the cavity lifting sliding plate 326, the top plane of the cavity body 3271 is provided with two rows of front and back from left to right, uniformly spaced, vertically downward, pre-set diameter and depth, matched with a plurality of lower chambers 3272 for accommodating batteries, and the two cavity sealing grooves 3273 are respectively arranged outside each of the plurality of lower chambers 3272 of the two rows of front and back, so that each of the plurality of lower chambers 3272 in the two cavity sealing grooves 3273 forms two lower cavity sub-zones 3274; the two lower battery cavity sealing rings 328 are respectively fixed in the two cavity sealing grooves 3273, the two cavity gas connectors 329 are respectively fixed on the middle part of the front and rear sides of the cavity 327, the cavity gas connector 329 comprises a cavity gas connector body 3291, a cavity gas connector air hole 3292 and a cavity gas connector sealing groove 3293, the two cavity gas connector bodies 3291 are respectively fixed on the middle part of the front and rear sides of the cavity 327, the top plane of the two cavity gas connector bodies 3291 is provided with a vertically downward cavity gas connector air hole 3292, the cavity gas connector air hole 3292 respectively communicates with each of the plurality of lower chambers 3272 in the two lower cavity sub-zones 3274, and the cavity gas connector sealing groove 3293 is arranged around the cavity gas connector air hole 3292; the two cavity gas connector sealing rings 32A are respectively fixed in the two cavity gas connector sealing grooves 3293; the cavity lifting driver 325 can drive the cavity lifting sliding plate 326 to lift the cavity 327.

[0037] Referring to Figure 3Further, the cavity cover mechanism 330 further comprises a cavity cover support 331, a battery vacuum helium injection control assembly 333 and two sealed cavity vacuum helium detection control assemblies 334; the cavity cover support 331 comprises two cavity cover support bottom plates 3311, four cavity cover support vertical columns 3312 and two cavity cover support top plates 3313, the two cavity cover support bottom plates 3311 are fixed on the external machine table, respectively located on the front and back sides of the left end of the cavity transfer linear module 310, and located at the helium detection position 380, the four cavity cover support vertical columns 3312 are respectively fixed on the two cavity cover support bottom plates 3311, and the cavity cover support top plate 3313 is fixed on the top of the four cavity cover support vertical columns 3312, and the cavity cover 332 is fixed below the cavity cover support top plate 3313;

[0038] Referring to Figure 4 The cavity cover 332 comprises a cavity cover body 3321 and a plurality of upper cavities 3322, the cavity cover body 3321 is fixed below the cavity cover support top plate 3313, and is provided with two rows of upper cavities 3322 in number, diameter, depth and spacing distance corresponding to the plurality of lower cavities 3272 of the cavity cover mechanism 330, and a plurality of upper cavities 3322 in the front and back rows respectively become two upper cavity partitions 3323 in the front and back corresponding to the two lower cavity partitions 3274 of the cavity cover mechanism 330, the battery vacuum helium injection control assembly 333 is fixed on the cavity cover support top plate 3313 and communicates with the upper cavity 3322, and the battery vacuum helium injection control assembly 333 is used for vacuumizing, injecting helium, returning helium after helium detection, and breaking vacuum after returning helium for the battery; the two sealed cavity vacuum helium detection control assemblies 334 are fixed on the cavity cover support top plate 3313 and can be respectively connected to the cavity gas joint 329 of the cavity body mechanism 320, and the sealed cavity vacuum helium detection control assembly 334 is used for vacuumizing, helium detection and breaking vacuum after helium detection for the sealed cavity; the two lower cavity partitions 3274 and the two upper cavity partitions 3323 can be combined to form two independent sealed cavities capable of containing a plurality of batteries for helium detection.

[0039] Referring to Figure 4Further, the battery vacuum pumping and helium injection control assembly 333 comprises two upper cavity partition branch pipes 3331, two vacuum gauges 3332, two isolation gate valves 3333, a vacuum pumping manifold 3334, two vacuum pumping gate valves 3335, two helium injection gate valves 3336, a helium return gate valve 3337, and two vacuum breaking gate valves 3338; the two upper cavity partition branch pipes 3331 are respectively fixed in front of and behind the cavity cover body 3321 of the cavity cover 332, and respectively communicate with a plurality of upper cavity chambers 3322 of the two upper cavity partitions 3323; the two vacuum gauges 3332 are respectively fixed on the two upper cavity partition branch pipes 3331; one end of each of the two isolation gate valves 3333 is fixed on the upper part of each of the two upper cavity partition branch pipes 3331; the vacuum pumping manifold 3334 is fixed on the other end of each of the two isolation gate valves 3333; the two vacuum pumping gate valves 3335, the two helium injection gate valves 3336, the helium return gate valve 3337, and the two vacuum breaking gate valves 3338 are respectively fixed on the vacuum pumping manifold 3334; the battery vacuum pumping and helium injection control assembly 333 is used for vacuum pumping, helium injection, helium detection, helium return after detection, and vacuum breaking after helium return.

[0040] Referring to Figure 5 Further, the sealed cavity vacuum pumping and helium detection control assembly 334 comprises a helium detection branch pipe mounting piece 3341, a helium detection branch pipe 3342, a helium detection manifold 3343, a vacuum gauge 3344, two helium detection gate valves 3345, a helium detection calibration gate valve 3346, a standard leak sample 3347, a helium detection vacuum breaking gate valve 3348, and a helium detection vacuum breaking silencer 3349;

[0041] The helium detection branch pipe mounting piece 3341 is fixed on the cavity cover body 3321 of the cavity cover 332; the helium detection branch pipe 3342 is elastically arranged in the helium detection branch pipe mounting piece 3341; the helium detection manifold 3343 is fixed on the helium detection branch pipe 3342; the vacuum gauge 3344, the two helium detection gate valves 3345, the helium detection calibration gate valve 3346, and the helium detection vacuum breaking gate valve 3348 are fixed on the helium detection manifold 3343; the standard leak sample 3347 is fixed below the helium detection calibration gate valve 3346; and the helium detection vacuum breaking silencer 3349 is fixed on the helium detection vacuum breaking gate valve 3348; the sealed cavity vacuum pumping and helium detection control assembly 334 is used for vacuum pumping, helium detection, and vacuum breaking after helium detection.

[0042] Referring to Figure 6Further, the cavity dust collection mechanism 340 comprises a cavity dust collection support column 341, a cavity dust collection suction plate lifting driver mount 342, a cavity dust collection suction plate lifting driver 343, a cavity dust collection suction plate mount 344 and a cavity dust collection suction plate 345. The cavity dust collection support column 341 is fixed at the front or rear of the middle part of the cavity transfer linear module 310 and is located at the dust collection position 370. The cavity dust collection suction plate lifting driver mount 342 is fixed at the top of the cavity dust collection support column 341. The cavity dust collection suction plate lifting driver 343 is vertically upwardly fixed on the cavity dust collection suction plate lifting driver mount 342. The cavity dust collection suction plate mount 344 is fixed on the output end of the cavity dust collection suction plate lifting driver 343. The cavity dust collection suction plate 345 is fixed below the cavity dust collection suction plate mount 344. The cavity dust collection suction plate lifting driver 343 is used to drive the cavity dust collection suction plate mount 344 to lower the cavity dust collection suction plate 345 to clean the cavity mechanism 320 and the battery dust collection.

[0043] Because dust is generally generated and accumulated in the lower cavity 3272, the cavity dust collection mechanism 340 can effectively clean the lower cavity 3272 of the cavity mechanism 320, and the dust removal effect is better than that of only cleaning the upper cavity 3322 of the lid mechanism 330.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A one-cavity two-zone helium detection device (300) for detecting the sealing of a battery, comprising a cavity transfer linear module (310), a cavity mechanism (320), a cavity cover mechanism (330) and two cavity dust suction mechanisms (340); the cavity transfer linear module (310) is horizontally fixed on an external machine, and is provided with an upper and lower loading position (360), a dust suction position (370) and a helium detection position (380) from right to left; the cavity mechanism (320) is fixed on the output end of the cavity transfer linear module (310); the cavity cover mechanism (330) is fixed on the external machine and is arranged above the left end of the cavity transfer linear module (310) and located at the helium detection position (380); the two cavity dust suction mechanisms (340) are fixed on the external machine and are respectively located at the front and rear sides of the middle part of the cavity transfer linear module (310) and at the dust suction position (370); the cavity transfer linear module (310) can drive the cavity mechanism (320) to reciprocate left and right, the cavity mechanism (320) can load and unload batteries at the upper and lower loading position (360) at the rightmost end; the cavity mechanism (320) can be cleaned by the two cavity dust suction mechanisms (340) at the dust suction position (370); the cavity mechanism (320) can enter the cavity cover mechanism (330) and be aligned with the cavity cover mechanism (330) at the helium detection position (380) to form a sealed cavity for helium detection; characterized in that: The cavity mechanism (320) comprises a cavity (327) provided with two lower cavity sub-zones (3274), and the cavity cover mechanism (330) comprises a cavity cover (332) provided with two upper cavity sub-zones (3323), and the two lower cavity sub-zones (3274) of the cavity mechanism (320) and the two upper cavity sub-zones (3323) of the cavity cover mechanism (330) are combined to form two independent sealed cavities for helium detection of multiple batteries.

2. The one-cavity two-zone helium detection device (300) according to claim 1, wherein the cavity mechanism (320) further comprises a cavity support bottom plate (321), four cavity lifting guide columns (322), four cavity lifting guide sleeves (323), two cavity lifting stop plates (324), a cavity lifting driver (325), a cavity lifting sliding plate (326), two lower battery cavity sealing rings (328), two cavity gas connectors (329), and two cavity gas connector sealing rings (32A); the cavity support bottom plate (321) is fixed on the output end of the cavity transfer linear module (310), the four cavity lifting guide columns (322) are respectively fixed on the four corners of the cavity support bottom plate (321), the four cavity lifting guide sleeves (323) are respectively sleeved on the four cavity lifting guide columns (322), the two cavity lifting stop plates (324) are respectively fixed on the top of the left and right two cavity lifting guide columns (322), the cavity lifting driver (325) is vertically fixed on the middle part of the cavity support bottom plate (321), the cavity lifting sliding plate (326) is fixed on the output end of the cavity lifting driver (325) and is fixed on the four cavity lifting guide sleeves (323), the cavity (327) is fixed on the cavity lifting sliding plate (326), and the cavity (327) comprises a cavity body (3271), a plurality of lower chambers (3272), and two cavity sealing grooves (3273); the cavity body (3271) is fixed on the cavity lifting sliding plate (326), the top plane of the cavity body (3271) is provided with two rows of front and back from left to right, evenly spaced, vertically downward, pre-set diameter and depth, and a plurality of lower chambers (3272) matched with the battery, two cavity sealing grooves (3273) are respectively arranged outside each plurality of lower chambers (3272) of the two rows of front and back, and each plurality of lower chambers (3272) in the two cavity sealing grooves (3273) form two lower cavity sub-zones (3274); two lower battery cavity sealing rings (328) are respectively fixed in the two cavity sealing grooves (3273), two cavity gas connectors (329) are respectively fixed on the middle part of the front and back sides of the cavity (327), the cavity gas connector (329) comprises a cavity gas connector body (3291), a cavity gas connector air hole (3292), and a cavity gas connector sealing groove (3293), two cavity gas connector bodies (3291) are respectively fixed on the middle part of the front and back sides of the cavity (327), the top plane of the two cavity gas connector bodies (3291) is provided with a vertically downward cavity gas connector air hole (3292), the cavity gas connector air hole (3292) respectively communicates each plurality of lower chambers (3272) in the two lower cavity sub-zones (3274), and the cavity gas connector sealing groove (3293) is arranged around the cavity gas connector air hole (3292).Two cavity gas joint sealing rings (32A) are fixed in two cavity gas joint sealing grooves (3293) respectively; the cavity lifting driver (325) can drive the cavity lifting slide plate (326) to lift the cavity (327).

3. The one-cavity two-zone helium detection device (300) according to claim 2, wherein the cavity cover mechanism (330) further comprises a cavity cover support (331), a battery vacuum injection helium control assembly (333), and two sealed cavity vacuum helium detection control assemblies (334); the cavity cover support (331) comprises two cavity cover support bottom plates (3311), four cavity cover support vertical columns (3312), and two cavity cover support top plates (3313), the two cavity cover support bottom plates (3311) are fixed on the external machine table and located on the left end of the cavity transfer linear module (310) on the front and back sides, and located at the helium detection position (380), the cavity cover support vertical columns (3312) are fixed on the two cavity cover support bottom plates (3311), the cavity cover support top plates (3313) are fixed on the top of the four cavity cover support vertical columns (3312), and the cavity cover (332) is fixed below the cavity cover support top plates (3313); the cavity cover (332) comprises a cavity cover body (3321) and a plurality of upper cavities (3322), the cavity cover body (3321) is fixed below the cavity cover support top plates (3313), and the cavity cover body (3321) is provided with a plurality of upper cavities (3322) corresponding in number, diameter, depth, and interval distance to the plurality of lower cavities (3272) of the cavity cover mechanism (330), and a plurality of upper cavities (3322) on the front and back sides form two upper cavity sub-zones (3323) corresponding to the two lower cavity sub-zones (3274) of the cavity cover mechanism (330), the battery vacuum injection helium control assembly (333) is fixed on the cavity cover support top plates (3313) and connected to the upper cavities (3322), and the battery vacuum injection helium control assembly (333) is used for vacuumizing, injecting helium, helium detection, returning helium, and breaking vacuum after helium detection of the battery; the two sealed cavity vacuum helium detection control assemblies (334) are fixed on the cavity cover support top plates (3313) and connected to the cavity gas joint (329) of the cavity mechanism (320), and the sealed cavity vacuum helium detection control assemblies (334) are used for vacuumizing, helium detection, and breaking vacuum after helium detection of the sealed cavity; and the two lower cavity sub-zones (3274) and the two upper cavity sub-zones (3323) can be combined to form two independent sealed cavities for helium detection of multiple batteries.

4. The one-cavity two-zone helium detection device (300) according to claim 3, wherein the battery vacuum pumping and helium injection control assembly (333) comprises two upper cavity partition branch pipes (3331), two vacuum gauges (3332), two isolation gate valves (3333), a vacuum pumping manifold (3334), two vacuum pumping gate valves (3335), two helium injection gate valves (3336), a helium return gate valve (3337), and two vacuum breaking gate valves (3338); the two upper cavity partition branch pipes (3331) are fixed on the cavity cover body (3321) of the cavity cover (332) in front and back respectively, and are connected with a plurality of upper cavity chambers (3322) of two upper cavity partitions (3323) respectively; the two vacuum gauges (3332) are fixed on the two upper cavity partition branch pipes (3331) respectively; one end of the two isolation gate valves (3333) is fixed on the upper part of the two upper cavity partition branch pipes (3331) respectively; the vacuum pumping manifold (3334) is fixed on the other end of the two isolation gate valves (3333); the two vacuum pumping gate valves (3335), the two helium injection gate valves (3336), the helium return gate valve (3337), and the two vacuum breaking gate valves (3338) are fixed on the vacuum pumping manifold (3334) respectively; the battery vacuum pumping and helium injection control assembly (333) is used for battery vacuum pumping, helium injection, helium detection, helium return after helium detection, and vacuum breaking of the battery after the helium return.

5. The one-cavity two-zone helium detection device (300) according to claim 1, wherein the sealed cavity vacuum pumping and helium detection control assembly (334) comprises a helium detection branch pipe mounting member (3341), a helium detection branch pipe (3342), a helium detection manifold (3343), a vacuum gauge (3344), two helium detection gate valves (3345), a helium detection calibration gate valve (3346), a standard leak sample (3347), a helium detection vacuum breaking gate valve (3348), and a helium detection vacuum breaking silencer (3349); the helium detection branch pipe mounting member (3341) is fixed on the cavity cover body (3321) of the cavity cover (332); the helium detection branch pipe (3342) is elastically arranged in the helium detection branch pipe mounting member (3341); the helium detection manifold (3343) is fixed on the helium detection branch pipe (3342); the vacuum gauge (3344), the two helium detection gate valves (3345), the helium detection calibration gate valve (3346), and the helium detection vacuum breaking gate valve (3348) are fixed on the helium detection manifold (3343); the standard leak sample (3347) is fixed below the helium detection calibration gate valve (3346); and the helium detection vacuum breaking silencer (3349) is fixed on the helium detection vacuum breaking gate valve (3348); the sealed cavity vacuum pumping and helium detection control assembly (334) is used for sealed cavity vacuum pumping, helium detection gas pumping, and vacuum breaking of the sealed cavity after the helium detection.

6. The two-zone helium detection device (300) of claim 1, wherein the cavity dust suction mechanism (340) comprises a cavity dust suction support column (341), a cavity dust suction suction plate lifting driver mount (342), a cavity dust suction suction plate lifting driver (343), a cavity dust suction suction plate mount (344), and a cavity dust suction suction plate (345); the cavity dust suction support column (341) is fixed at the front or rear of the middle of the cavity transfer linear module (310) and is located at the dust suction position (370); the cavity dust suction suction plate lifting driver mount (342) is fixed at the top of the cavity dust suction support column (341); the cavity dust suction suction plate lifting driver (343) is vertically upwardly fixed on the cavity dust suction suction plate lifting driver mount (342); the cavity dust suction suction plate mount (344) is fixed on the output end of the cavity dust suction suction plate lifting driver (343); the cavity dust suction suction plate (345) is fixed below the cavity dust suction suction plate mount (344); and the cavity dust suction suction plate lifting driver (343) is used to drive the cavity dust suction suction plate mount (344) to lower the cavity dust suction suction plate (345) to clean the cavity mechanism (320) and the battery.

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