CN217637846U

CN217637846U - Battery helium gas detection device

Info

Publication number: CN217637846U
Application number: CN202221813611.4U
Authority: CN
Inventors: 陈迁
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-10-21
Anticipated expiration: 2032-07-13

Abstract

The utility model provides a battery helium detection device, which comprises a first loading unit, a second loading unit, a vacuumizing unit, a battery processing assembly and a detection unit; the evacuation unit is used for evacuating the first loading unit and the second loading unit; the loading units and the at least one second loading unit are connected in parallel, and each loading unit or the second loading unit can be selectively connected with any one of the two evacuating units; the battery processing assembly is used for vacuumizing the interior of the battery and injecting helium into the battery; the detection unit is communicated with the first loading units and the second loading units at the same time and is used for helium detection; through detecting the cavity and rechecking the cavity and being connected in parallel can the selectivity link to each other with two units of managing to find time, thereby not only improved the detection volume that the single detected by a wide margin, thereby can also carry out the recheck when carrying out helium inspection through valve control moreover, and then shortened the helium and examined the flow, improved work efficiency.

Description

Battery helium gas detection device

Technical Field

The utility model relates to a battery helium examines technical field, especially relates to a battery helium detection device.

Background

In the existing technology of the battery, the battery can not be completely sealed due to the bad phenomena of pinholes, broken welding, explosion-proof valve damage and the like after the peripheral welding of the cover plate. When the defective battery flows into the post-process liquid injection, liquid leakage, short circuit, fire and other defective phenomena can occur, so that helium detection can be performed on the battery after the periphery of the cover plate is welded, and whether the battery is completely sealed or not can be confirmed.

According to the basic leak detection principle of helium detection, helium is used as tracer gas, the helium is filled into a workpiece in a vacuum box, and then the leak condition of the workpiece can be judged quickly and accurately with high precision through a helium leak detector. The specific operation flow is that an operator needs to put a workpiece in a vacuum box firstly, then a workpiece interface is connected with a quick joint in the vacuum box, and after the vacuum box door is closed, the system controls various processes of vacuumizing, helium filling, helium leakage point detection and workpiece pressure relief recovery of the workpiece in sequence. Technical personnel find that the flow of the whole existing working procedure is long, particularly after the quality problem of the battery is found through helium detection, the battery is required to be rechecked normally, so that the working efficiency of helium detection equipment is generally poor, and the requirement for high-efficiency production of the battery cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a battery helium gas detection device for need examine the battery again after solving and examining the discovery battery quality problem through the helium in the current helium test process, lead to the helium to examine the process flow longer, helium examines the general relatively poor problem of equipment work efficiency.

The technical scheme of the utility model is realized like this: the utility model provides a battery helium detection device, which comprises a first loading unit, a second loading unit, a vacuumizing unit, a battery processing assembly and a detection unit; two evacuating units are arranged and used for vacuumizing the first loading unit and the second loading unit; the first loading unit and the second loading unit can be used for placing batteries, the plurality of loading units and the at least one second loading unit are connected in parallel, and each loading unit or the second loading unit can be selectively connected with any one of the two evacuating units; the battery processing assembly can be communicated with the battery in the first loading unit or the second loading unit and is used for vacuumizing the interior of the battery and injecting helium into the battery; the detection unit is communicated with the first loading units and the second loading units at the same time and is used for detecting the helium concentration in the first loading units or the second loading units.

On the basis of the above technical scheme, preferably, the first loading unit comprises a detection cavity, the second loading unit comprises a rechecking cavity, the evacuation unit comprises a first vacuum pump, and the detection unit comprises a helium detection device and a helium detector pump; batteries can be placed in the detection cavity and the reinspection cavity, the detection cavity and the reinspection cavity are provided with a first evacuation end and a second evacuation end, each first evacuation end is simultaneously communicated with one of the first vacuum pumps, and each second evacuation end is simultaneously communicated with the other first vacuum pump; the helium detection device is simultaneously communicated with the detection cavities and the rechecking cavity and is used for detecting the helium concentration input into the helium detection device; the helium detector pump is communicated with the helium detection device and is used for pumping helium in the detection cavity and the rechecking cavity into the helium detection device.

More preferably, the first loading unit and the second loading unit both further comprise two first vacuum valves and two helium check valves; the two first vacuumizing valves are respectively arranged on the first vacuumizing end and the second vacuumizing end and are used for connecting the detection cavity or the re-detection cavity with the first vacuum pump or disconnecting the detection cavity or the re-detection cavity with the first vacuum pump; the helium detection valves are communicated between the detection cavity and the helium detection device or between the rechecking cavity and the helium detection device in a one-to-one correspondence manner, and the helium detection valves are used for connecting the detection cavity or the rechecking cavity to the helium detection device or disconnecting the detection cavity or the rechecking cavity to the helium detection device.

Further preferably, the first loading unit and the second loading unit further comprise first pressure relief valves, the first pressure relief valves are communicated with the detection cavity or the reinspection cavity in a one-to-one correspondence manner, and the first pressure relief valves are used for communicating the detection cavity or the reinspection cavity with the external environment or disconnecting the detection cavity or the reinspection cavity from the external environment.

Still further preferably, the battery handling assembly includes a connector, a helium gas storage device and a second vacuum pump; the connectors are arranged in the detection cavities and the reinspection cavity, the connectors can be communicated with the batteries in the detection cavities or the reinspection cavity, and the connectors are provided with gas injection ends and third evacuation ends; the helium storage device is communicated with each gas injection end at the same time, and can inject helium into the battery; the second vacuum pump is communicated with the third evacuation ends at the same time, and the second vacuum pump can evacuate the interior of the battery.

It is further preferable that two connectors are provided in each detection chamber, and the two connectors are connected in parallel and have the same gas injection end and the same third evacuation end.

Still further preferably, the battery processing assembly further comprises an air injection valve and a second vacuum pumping valve; the gas injection valve is arranged on the gas injection end, and the gas injection end is used for connecting the battery with the helium storage device or disconnecting the battery from the helium storage device; and the second vacuumizing valve is arranged on the third vacuumizing end and is used for connecting the battery with the second vacuum pump or disconnecting the battery from the second vacuum pump.

Still further preferably, the battery processing assembly further comprises a second pressure release valve, the second pressure release valves are communicated with the connectors in a one-to-one correspondence manner, and the second pressure release valves are used for communicating the battery with the external environment or disconnecting the battery from the external environment.

Still further preferably, the battery processing assembly further comprises recovery valves, the recovery valves are communicated with the connectors in a one-to-one correspondence manner, and the recovery valves are used for connecting the batteries with an external helium recovery device or disconnecting the batteries from the external helium recovery device.

The utility model discloses a battery helium gas detection surveys device has following beneficial effect for prior art:

(1) The utility model discloses a detect the chamber and examine the chamber again parallelly connected and can the selectivity link to each other with two units of managing to find time, not only improved the detection volume that the single detected by a wide margin, thereby can also carry out the reinspection when carrying out helium and examining through valve control moreover, and then shortened the helium and examined the flow, improved work efficiency.

(2) The utility model discloses a battery processing subassembly switch-on simultaneously detects the chamber and rechecks the battery of intracavity to detect two batteries simultaneously at same detection intracavity, and carry out the recheck of single battery in the recheck intracavity, improved the detection volume that single helium examined, improved efficiency, can also guarantee the accuracy of recheck simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a helium gas detection device of the present invention;

fig. 2 is a schematic structural view of the battery handling assembly of the present invention.

In the figure: 1. a first loading unit; 11. a detection chamber; 12. a first evacuation valve; 13. a helium check valve; 14. A first pressure relief valve; 101. a first evacuation end; 102. a second evacuation end; 2. a second loading unit; 21. a rechecking cavity; 3. an evacuation unit; 31. a first vacuum pump; 4. a battery handling assembly; 41. a joint; 42. a helium gas storage device; 43. a second vacuum pump; 44. an air injection valve; 45. a second vacuum valve; 46. a second pressure relief valve; 47. a recovery valve; 401. a gas injection end; 402. a third evacuation end; 5. a detection unit; 51. a helium detection device; 52. helium detector pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, the battery helium detecting device of the present invention comprises a first loading unit 1, a second loading unit 2, a vacuum unit 3, a battery handling assembly 4 and a detecting unit 5.

Two evacuation units 3 are provided, and the evacuation units 3 are used for evacuating the first loading unit 1 and the second loading unit 2. Specifically, the evacuation unit 3 includes a first vacuum pump 31 and a control hand valve, the first vacuum pump 31 performs a vacuum pumping function, and the control hand valve controls a communication state of the first vacuum pump 31.

The first loading unit 1 and the second loading unit 2 can be used for placing batteries, the plurality of loading units and at least one second loading unit 2 are connected in parallel, and each loading unit or the second loading unit 2 can be selectively connected with any one of the two evacuating units 3. Wherein, generally set up four first loading unit 1 and set up two second loading unit 2, the quantity arrangement of this can furthest's improvement detection efficiency, can not cause the problem that detects the precision and reduce because of detecting station single detection quantity too much again to and avoid reinspection station utilization ratio lower problem. The first loading unit 1 is a check station and the second loading unit 2 is a re-check station.

Specifically, the first loading unit 1 includes a detection chamber 11, and the second loading unit 2 includes a review chamber 21.

The batteries can be placed in the detection cavity 11 and the rechecking cavity 21, the detection cavity 11 and the rechecking cavity 21 are provided with a first evacuation end 101 and a second evacuation end 102, each first evacuation end 101 is communicated with one of the first vacuum pumps 31, and each second evacuation end 102 is communicated with the other first vacuum pump 31.

The battery handling assembly 4 can be communicated with the battery in the first loading unit 1 or the second loading unit 2, and the battery handling assembly 4 is used for vacuumizing the interior of the battery and injecting helium into the battery. It should be noted that the battery handling assembly 4 is not shown in fig. 1, because the pipelines of the battery handling assembly 4 and the vacuum-pumping and helium-testing pipelines of the detection chamber 11 and the rechecking chamber 21 are independent from each other, and there is no communication relationship therebetween.

The detection unit 5 is simultaneously communicated with the first loading units 1 and the second loading units 2, and the detection unit 5 is used for detecting the helium concentration in the first loading units 1 or the second loading units 2.

Specifically, the detection unit 5 includes a helium detector 51 and a helium detector pump 52.

The helium detecting device 51 is simultaneously communicated with the detection cavities 11 and the rechecking cavity 21, and the helium detecting device 51 is used for detecting the concentration of helium gas input into the helium detecting device 51. It should be noted that the principle of helium detection is to place the battery in a vacuum box, inject helium into the battery which is evacuated inside, if the battery has a leak point, the helium will overflow from the inside of the battery into the vacuum box, so that the helium can be detected by the helium detection device 51, and therefore the helium detection device 51 is only used for detecting whether helium exists and the concentration of helium, and transmitting the detection signal to the external control system. Since the present invention does not relate to an improvement of the principle of helium detection, the signal transmission process and the external control system are not described in detail.

The helium detector pump 52 is communicated with the helium detection device 51, and the helium detector pump 52 is used for pumping helium gas in the detection cavity 11 and the rechecking cavity 21 into the helium detection device 51.

The second embodiment:

in the first embodiment, the first loading unit 1 and the second loading unit 2 each further include two first evacuation valves 12 and a helium check valve 13.

The two first evacuation valves 12 are respectively disposed on the first evacuation end 101 and the second evacuation end 102, and the first evacuation valves 12 are used to connect the detection chamber 11 or the review chamber 21 to the first vacuum pump 31 or disconnect the detection chamber 11 or the review chamber 21 to the first vacuum pump 31.

The helium check valves 13 are correspondingly communicated between the detection cavity 11 and the helium check device 51 or between the rechecking cavity 21 and the helium check device 51, and the helium check valves 13 are used for connecting the detection cavity 11 or the rechecking cavity 21 to the helium check device 51 or disconnecting the detection cavity 11 or the rechecking cavity 21 to the helium check device 51.

By controlling the opening and closing of the first vacuumizing valve 12 and the helium detecting valve 13, helium detection can be performed by using a plurality of detection stations in batches, and batteries with possible leakage points can be rechecked by using a rechecking station while helium detection is performed.

Example three:

in the second embodiment, in a specific operation, each of the first loading unit 1 and the second loading unit 2 further includes a first relief valve 14.

Wherein, first relief valve 14 one-to-one correspondence communicates on detecting chamber 11 or reinspection chamber 21, and first relief valve 14 is used for will detecting chamber 11 or reinspection chamber 21 intercommunication external environment or will detect chamber 11 or reinspection chamber 21 disconnection intercommunication external environment, and first relief valve 14 is used for letting out the vacuum pumping state who detects chamber 11 or reinspection chamber 21.

Example four:

on the basis of the first embodiment, in order to realize the vacuum pumping of the battery interiors in the plurality of stations and the helium gas injection into the batteries, as shown in fig. 1, with reference to fig. 2, the battery processing assembly 4 includes a connector 41, a helium gas storage device 42, and a second vacuum pump 43.

Wherein, the joint 41 is arranged in each of the detection cavity 11 and the reinspection cavity 21, the joint 41 can communicate with the battery in the detection cavity 11 or the reinspection cavity 21, and the joint 41 has a gas injection end 401 and a third evacuation end 402; the helium gas storage device 42 is communicated with each gas injection end 401, and the helium gas storage device 42 can inject helium gas into the battery. Generally, two connectors 41 are arranged in each detection cavity 11, and the two connectors 41 are connected in parallel and have the same gas injection end 401 and the same third evacuation end 402, for the reason similar to that of the current nucleic acid detection mode, and the efficiency of battery helium detection can be improved exponentially; meanwhile, a single connector 41 is still arranged in the rechecking cavity 21, so that the batteries which are detected by helium detection in the detection cavity 11 and have possible leak points can be rechecked.

The second vacuum pump 43 is also connected to each of the third evacuation ports 402, and the second vacuum pump 43 can evacuate the interior of the battery.

Example five:

in the fourth embodiment, the battery handling assembly 4 further includes a gas injection valve 44 and a second vacuum pumping valve 45.

Wherein the gas injection valve 44 is arranged on the gas injection end 401, and the gas injection end 401 is used for connecting the battery to the helium gas storage device 42 or disconnecting the battery from the helium gas storage device 42.

A second evacuation valve 45 is provided on the third evacuation port 402, the second evacuation valve 45 being used to connect the battery to the second vacuum pump 43 or disconnect the battery from the second vacuum pump 43.

Similarly to the second embodiment, the batteries in the plurality of stations can be charged with helium and evacuated in batches by controlling the opening and closing of the gas injection valve 44 and the second evacuation valve 45.

Example six:

in addition to the fourth embodiment, the battery treating assembly 4 further includes a second pressure relief valve 46 and a recovery valve 47.

The second pressure relief valves 46 are communicated with the connectors 41 in a one-to-one correspondence manner, the second pressure relief valves 46 are used for communicating the batteries with the external environment or disconnecting the batteries from the external environment, and the second pressure relief valves 46 are used for relieving the vacuum state inside the batteries.

The recovery valves 47 are in one-to-one communication with the connectors 41, and the recovery valves 47 are used for connecting the battery to the external helium recovery device or disconnecting the battery from the external helium recovery device, so that the helium in the battery is recovered and reused.

Example seven:

any combination of embodiments one to six is also included in the case where there is no technical conflict.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery helium gas detection device which characterized in that: comprises a first loading unit (1), a second loading unit (2), an evacuating unit (3), a battery processing assembly (4) and a detection unit (5);

two evacuation units (3) are provided, the evacuation units (3) being used for evacuating the first loading unit (1) and the second loading unit (2);

batteries can be placed in the first loading unit (1) and the second loading unit (2), a plurality of loading units and at least one second loading unit (2) are connected in parallel, and each loading unit or second loading unit (2) can be selectively connected with any one of the two evacuation units (3);

the battery processing assembly (4) can be communicated with a battery in the first loading unit (1) or the second loading unit (2), and the battery processing assembly (4) is used for vacuumizing the interior of the battery and injecting helium into the battery;

the detection unit (5) is communicated with the first loading units (1) and the second loading units (2) at the same time, and the detection unit (5) is used for detecting helium concentration in the first loading units (1) or the second loading units (2).

2. The battery helium detection device of claim 1, wherein: the first loading unit (1) comprises a detection cavity (11), the second loading unit (2) comprises a rechecking cavity (21), the evacuating unit (3) comprises a first vacuum pump (31), and the detection unit (5) comprises a helium detection device (51) and a helium detector pump (52);

batteries can be placed in the detection cavity (11) and the reinspection cavity (21), the detection cavity (11) and the reinspection cavity (21) are respectively provided with a first evacuation end (101) and a second evacuation end (102), each first evacuation end (101) is simultaneously communicated with one first vacuum pump (31), and each second evacuation end (102) is simultaneously communicated with the other first vacuum pump (31);

the helium detection device (51) is communicated with the detection cavities (11) and the rechecking cavity (21) at the same time, and the helium detection device (51) is used for detecting the helium concentration input into the helium detection device (51);

the helium detector pump (52) is communicated with the helium detector (51), and the helium detector pump (52) is used for pumping helium in the detection cavity (11) and the rechecking cavity (21) into the helium detector (51).

3. The battery helium detection device of claim 2, wherein: the first loading unit (1) and the second loading unit (2) respectively comprise two first vacuumizing valves (12) and two helium check valves (13);

the two first vacuumizing valves (12) are respectively arranged on the first vacuumizing end (101) and the second vacuumizing end (102), and the first vacuumizing valves (12) are used for switching on the first vacuum pump (31) of the detection cavity (11) or the reinspection cavity (21) or switching off the detection cavity (11) or the reinspection cavity (21) and switching on the first vacuum pump (31);

the helium detection valves (13) are correspondingly communicated between the detection cavity (11) and the helium detection device (51) or between the rechecking cavity (21) and the helium detection device (51), and the helium detection valves (13) are used for connecting the detection cavity (11) or the rechecking cavity (21) to the helium detection device (51) or disconnecting the detection cavity (11) or the rechecking cavity (21) to the helium detection device (51).

4. The battery helium detection device of claim 3, wherein: first loading unit (1) and second loading unit (2) all still include first relief valve (14), first relief valve (14) one-to-one intercommunication is on detecting chamber (11) or reinspection chamber (21), first relief valve (14) are used for will detecting chamber (11) or reinspection chamber (21) intercommunication external environment or will detect chamber (11) or reinspection chamber (21) disconnection intercommunication external environment.

5. The battery helium detection device of claim 2, wherein: the battery processing assembly (4) comprises a joint (41), a helium gas storage device (42) and a second vacuum pump (43);

the joint (41) is arranged in each detection cavity (11) and each reinspection cavity (21), the joint (41) can be communicated with a battery in the detection cavity (11) or the reinspection cavity (21), and the joint (41) is provided with a gas injection end (401) and a third evacuation end (402);

the helium storage device (42) is communicated with each gas injection end (401), and the helium storage device (42) can inject helium into the battery;

the second vacuum pump (43) is communicated with the third vacuumizing ends (402), and the second vacuum pump (43) can vacuumize the interior of the battery.

6. The battery helium detection device of claim 5, wherein: two joints (41) are arranged in each detection cavity (11), and the two joints (41) are connected in parallel and have the same gas injection end (401) and a third evacuation end (402).

7. The battery helium detection device of claim 5, wherein: the battery processing assembly (4) further comprises a gas injection valve (44) and a second vacuum pumping valve (45);

the gas injection valve (44) is arranged on a gas injection end (401), and the gas injection end (401) is used for connecting the battery with the helium storage device (42) or disconnecting the battery from the helium storage device (42);

the second vacuumizing valve (45) is arranged on the third vacuumizing end (402), and the second vacuumizing valve (45) is used for connecting the battery with the second vacuum pump (43) or disconnecting the battery from the second vacuum pump (43).

8. The battery helium detection device of claim 7, wherein: the battery processing assembly (4) further comprises a second pressure relief valve (46), the second pressure relief valve (46) is communicated with the joint (41) in a one-to-one correspondence mode, and the second pressure relief valve (46) is used for enabling the battery to be communicated with the external environment or disconnecting the battery from the external environment.

9. The battery helium detection device of claim 7, wherein: the battery processing assembly (4) further comprises recovery valves (47), the recovery valves (47) are communicated with the connectors (41) in a one-to-one correspondence mode, and the recovery valves (47) are used for enabling the batteries to be communicated with an external helium recovery device or disconnecting the batteries from the external helium recovery device.