Inflation recovery system of helium detection equipment for airtightness of battery sealing cover of new energy automobile

Abstract

The utility model discloses an inflation recovery system of helium detection equipment for airtightness of a battery sealing cover of a new energy automobile. The inflation recovery system comprises a vacuum pump, a gas storage tank, a pressure detection unit, a booster pump and a helium supply device, the vacuum pump is used for performing vacuum treatment on the product cavity; the gas storage tank is used for supplying helium into the product cavity; the pressure detection unit is used for detecting the air pressure in the product cavity; the booster pump is used for recycling and compressing the mixed helium in the product cavity into the gas storage tank; the output end of the helium supply device is communicated with the gas storage tank through a pipeline V and is used for supplying helium to the gas storage tank; mixed helium in the product cavity can be recycled and compressed into the gas storage tank through the booster pump, compared with existing helium detection equipment, helium does not need to be discharged, the helium recycling function is achieved, and the helium detection cost is reduced. In addition, through mutual cooperation of a helium supply device and a sixth electromagnetic valve, helium can be automatically supplied to the interior of the gas storage tank, and the automatic supplementing function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection technical field especially relates to a new energy automobile battery seal cover airtightness helium detection equipment fills and recovers the system. BACKGROUND

[0002] The battery seal cover is an important component of the battery. The battery seal cover needs to be detected for airtightness in the battery production link. Helium is injected into the inner cavity of the battery seal cover, and the helium concentration is detected to determine whether the product is good. The existing helium detection equipment directly discharges the helium after detection in the detection station, without recycling, which is wasteful and leads to high helium detection cost, and lacks automatic helium supplement function. SUMMARY

[0003] The utility model discloses a new energy automobile battery seal cover airtightness helium detection equipment fills and recovers the system, and aims at solving the above-mentioned problems.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme as follows:

[0005] The application provides a new energy automobile battery seal cover airtightness helium detection equipment fills and recovers the system, comprising:

[0006] The vacuum pump is connected to the product cavity through pipeline one at the input end, and is used for vacuum treatment in the product cavity;

[0007] The gas storage tank is connected to the product cavity through pipeline two at the output end, and is used for supplying helium in the product cavity;

[0008] The pressure detection unit is connected to the product cavity, and is used for detecting the internal pressure of the product cavity;

[0009] The booster pump is connected to the product cavity through pipeline three at the input end, and is connected to the gas storage tank through pipeline four at the output end, and is used for recycling and compressing the mixed helium in the product cavity into the gas storage tank;

[0010] The helium supply device is connected to the gas storage tank through pipeline five at the output end, and is used for supplying helium to the gas storage tank when the helium concentration in the gas storage tank is insufficient.

[0011] In a possible implementation, a residual helium cleaning unit is further installed on the product cavity;

[0012] The residual helium cleaning unit comprises an exhaust fan and a high-pressure gas supply pipe, the exhaust fan is connected to the product cavity, and is used for discharging residual helium;

[0013] The output end of the high-pressure gas supply pipe is communicated to the product cavity for blowing out residual helium high pressure.

[0014] In a possible implementation, an electromagnetic valve one is installed between the vacuum pump and the product cavity.

[0015] In a possible implementation, an electromagnetic valve two is installed on the pipeline two.

[0016] In a possible implementation, an electromagnetic valve three is installed on the pipeline three.

[0017] In a possible implementation, a helium concentration instrument for detecting the helium concentration inside the gas storage tank is installed on the pipeline four.

[0018] In a possible implementation, a pressure relief and discharge unit for pressure relief is installed on the gas storage tank.

[0019] The pressure relief and discharge unit comprises a gas storage tank pressure sensor for detecting the pressure inside the gas storage tank and an electromagnetic valve four for pressure relief.

[0020] In a possible implementation, an electromagnetic valve five is installed between the high-pressure gas supply pipe and the product cavity.

[0021] In a possible implementation, a vacuum pressure sensor is installed between the electromagnetic valve one and the vacuum pump.

[0022] In a possible implementation, an electromagnetic valve six is installed on the pipeline five.

[0023] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present application are:

[0024] In the present application, the mixed helium in the product cavity can be recovered and compressed into the gas storage tank by the booster pump, without the need for helium discharge between the existing helium detection equipment, with the function of helium recovery, reducing the helium detection cost; in addition, the internal of the gas storage tank can be automatically supplied with helium by the helium supply device, with the automatic replenishment function, and the system structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The system schematic diagram of the present application.

[0026] Markings in the figure:

[0027] 1, vacuum pump; 101, pipeline one; 100, product cavity;

[0028] 2, gas storage tank; 201, pipeline two;

[0029] 3, pressure detection unit;

[0030] 4, booster pump; 401, pipeline three; 402, pipeline four;

[0031] 5, helium supply device; 501, pipeline five; 6, exhaust fan; 7, high-pressure gas supply pipe; 8, electromagnetic valve one; 9, electromagnetic valve two; 10, electromagnetic valve three; 11, helium concentration instrument; 12, gas tank pressure sensor; 13, electromagnetic valve four; 14, electromagnetic valve five; 15, vacuum pressure sensor; 16, electromagnetic valve six. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0033] Firstly, using Figure 1 The overall structure of the helium charging and recovery system of the new energy automobile battery sealing cover airtightness helium detection equipment will be described, Figure 1 The system principle diagram of the present application.

[0034] The new energy automobile battery sealing cover airtightness helium detection equipment charging and recovery system, comprising a vacuum pump 1, a gas tank 2, a pressure detection unit 3, a booster pump 4, a helium supply device 5 and a control system, wherein:

[0035] The control system can be a PLC control system, and the control system and the vacuum pump 1, the gas tank 2, the pressure detection unit 3, the booster pump 4 and the helium supply device 5 and other components and instruments are electrically connected together, which is used for controlling the coordinated operation of the system.

[0036] The input end of the vacuum pump 1 is connected with the product cavity 100 through the pipeline one 101, and the electromagnetic valve one 8 is installed between the vacuum pump 1 and the product cavity 100. The electromagnetic valve one 8 is installed on the pipeline one 101, and the vacuum pressure sensor 15 is installed between the electromagnetic valve one 8 and the vacuum pump 1. When the vacuum pump 1 starts, the electromagnetic valve one 8 opens, and the vacuum pump 1 can be used for vacuum treatment in the product cavity 100, so that the inside of the product cavity 100 is in a vacuum state. When the vacuum pump 1 is closed, the electromagnetic valve one 8 is also closed, so that the product cavity 100 maintains a vacuum state.

[0037] The output end of the gas tank 2 is connected with the product cavity 100 through the pipeline two 201, and the electromagnetic valve two 9 is installed on the pipeline two 201. The gas tank 2 is used for supplying helium to the product cavity 100. Specifically, when the helium in the gas tank 2 is supplied to the product cavity 100, the electromagnetic valve two 9 is opened, and the helium in the gas tank 2 can be transmitted to the product cavity 100 in a vacuum state, and then the electromagnetic valve two 9 is closed.

[0038] The pressure detection unit 3 can be a pressure sensor, the pressure detection unit 3 is communicated with the product cavity 100, the pressure detection unit 3 can detect the internal pressure of the product cavity 100. When the product cavity 100 is internally vacuumized, the pressure detection unit 3 can be used to detect the pressure in the vacuum state. When the product cavity 100 is internally supplied with helium, the pressure detection unit 3 can detect the pressure when the helium is provided, and is used to evaluate the air tightness of the product cavity 100.

[0039] The input end of the booster pump 4 is communicated with the product cavity 100 through the pipeline three 401, and the output end of the booster pump 4 is communicated with the gas storage tank 2 through the pipeline four 402. The electromagnetic valve three 10 is installed on the pipeline three 401, and the electromagnetic valve three 10 is located between the booster pump 4 and the product cavity 100. When the booster pump 4 is opened, the electromagnetic valve three 10 is opened, at this time, the booster pump 4 can recover and compress the mixed helium in the product cavity 100 into the gas storage tank 2, and then the electromagnetic valve three 10 is closed.

[0040] The helium supply device 5 can be a high-pressure helium tank, the output end of the helium supply device 5 is communicated with the gas storage tank 2 through the pipeline five 501, and the electromagnetic valve six 16 is installed on the pipeline five 501. After the gas storage tank 2 releases helium in the product cavity 100 for many times, when the helium concentration in the gas storage tank 2 is insufficient, the electromagnetic valve six 16 is opened, and the helium supply device 5 can supply helium to the gas storage tank 2.

[0041] In the embodiment, when the gas storage tank 2 supplies helium to the product cavity 100, and the product cavity 100 is evaluated after the air tightness, through the cooperation of the booster pump 4 and the electromagnetic valve three 10, the booster pump 4 is opened, the electromagnetic valve three 10 is opened, and the booster pump 4 can recover and compress the mixed helium in the product cavity 100 into the gas storage tank 2. Compared with the existing helium detection equipment, the helium recovery function is realized, and the helium detection cost is reduced. Moreover, through the cooperation of the helium supply device 5 and the electromagnetic valve six 16, the internal helium of the gas storage tank 2 can be automatically supplied, and the automatic supplement function is realized.

[0042] In some embodiments, as shown in Figure 1 . Figure 1 It is the system principle diagram of the utility model. In order to intelligently monitor the helium concentration in the gas storage tank 2, so as to automatically supply helium to the inside of the gas storage tank 2. The helium concentration instrument 11 for detecting the helium concentration in the gas storage tank 2 is installed on the pipeline four 402, and the helium concentration instrument 11 and the control system are electrically connected together.

[0043] When the helium concentration instrument 11 detects that the helium concentration in the gas storage tank 2 is lower than the set threshold value, the control system controls the electromagnetic valve six 16 to open, and the helium in the helium supply device 5 can be supplied to the gas storage tank 2.

[0044] When the helium concentration instrument 11 detects that the helium concentration inside the gas tank 2 is within the set threshold range, the control system controls the electromagnetic valve six 16 to be closed, and the helium supply device 5 and the gas tank 2 can automatically complete the supply of helium.

[0045] In some embodiments, as Figure 1 shown. Figure 1 The system principle diagram of the utility model. In order to ensure the cleanness after the internal airtightness detection of product cavity 100, the new energy automobile battery sealing cover airtightness helium detection equipment fills and recovers the system still includes the residual helium cleaning unit installed to product cavity 100.

[0046] Residual helium cleaning unit includes exhaust fan 6 and high pressure gas supply pipe 7, exhaust fan 6 is communicated with product cavity 100, when the airtightness detection of product cavity 100 is complete, exhaust fan 6 opens, can discharge the residual helium inside product cavity 100. And the output end of high pressure gas supply pipe 7 is communicated to product cavity 100, electromagnetic valve five 14 is installed between high pressure gas supply pipe 7 and product cavity 100, high pressure gas supply pipe 7 can supply high pressure air to the inside of product cavity 100, for residual helium high pressure blowing discharge, further ensure that there is no residual helium gas in product cavity 100, ensure the cleanness inside product cavity 100.

[0047] In some embodiments, as Figure 1 shown. Figure 1 The system principle diagram of the utility model. In order to ensure the stability of the internal pressure of gas tank 2. Gas tank 2 is installed with pressure relief discharge unit for pressure relief;Pressure relief discharge unit includes gas tank pressure sensor 12 and electromagnetic valve four 13, and gas tank pressure sensor 12 and electromagnetic valve four 13 are electrically connected together with control system.

[0048] Gas tank pressure sensor 12 can detect the internal pressure of gas tank 2. When the internal pressure of gas tank 2 is higher than the preset threshold, the control system controls electromagnetic valve four 13 to start, and electromagnetic valve four 13 can relieve the pressure of gas tank 2.

[0049] When the internal pressure of gas tank 2 is within the preset threshold range, the control system controls electromagnetic valve four 13 to be closed, and the internal pressure of gas tank 2 maintains a safe pressure value.

[0050] In the description of the utility model, it is necessary to explain that the term "include", "contain" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the existence of other same elements in the process, method, article or device including the element.

[0051] In addition, in the description of the utility model, the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 does not 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.

[0052] On the other hand, it is necessary to explain that unless otherwise explicitly specified and limited, the terms "provided", "installed", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A new energy vehicle battery sealing cover airtightness helium detection equipment fills the hydrogen recovery system, its characterized in that, The application relates to a helium residual cleaning device for a product cavity (100). The device comprises a vacuum pump (1) connected to the product cavity (100) through a pipeline (101) for vacuum treatment of the product cavity (100); a gas storage tank (2) connected to the product cavity (100) through a pipeline (201) for supplying helium to the product cavity (100); a pressure detection unit (3) connected to the product cavity (100) for detecting the internal pressure of the product cavity (100); a booster pump (4) connected to the product cavity (100) through a pipeline (401) and connected to the gas storage tank (2) through a pipeline (402) for recovering and compressing the mixed helium in the product cavity (100) into the gas storage tank (2); and a helium supply device (5) connected to the gas storage tank (2) through a pipeline (501) for supplying helium to the gas storage tank (2) when the helium concentration in the gas storage tank (2) is insufficient. The device further comprises a helium residual cleaning unit installed on the product cavity (100). The helium residual cleaning unit comprises an air extractor (6) connected to the product cavity (100) for discharging residual helium and a high-pressure gas supply pipe (7) connected to the product cavity (100) for blowing and discharging residual helium. An electromagnetic valve (8) is installed between the vacuum pump (1) and the product cavity (100). An electromagnetic valve (9) is installed on the pipeline (201).

2. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 1, characterized in that, An electromagnetic valve (10) is installed on the pipeline (401). A helium concentration detector (11) is installed on the pipeline (402) for detecting the helium concentration in the gas storage tank (2). A pressure relief and discharge unit is installed on the gas storage tank (2) for pressure relief.

3. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 2, characterized in that, The pressure relief and discharge unit comprises a gas storage tank pressure sensor (12) for detecting the internal pressure of the gas storage tank (2) and an electromagnetic valve (13) for pressure relief.

4. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 1, characterized in that, An electromagnetic valve (14) is installed between the high-pressure gas supply pipe (7) and the product cavity (100).

5. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 1, characterized in that, A vacuum pressure sensor (15) is installed between the electromagnetic valve (8) and the vacuum pump (1).

6. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 1, characterized in that, An electromagnetic valve (16) is installed on the pipeline (501).

7. The new energy vehicle battery sealing cover airtightness helium detection equipment filling and recovery system according to claim 1, characterized in that, ​ ​ 8. The new energy vehicle battery sealing cover airtightness helium detection equipment fills hydrogen recovery system according to claim 1, characterized in that, ​ 9. The new energy vehicle battery sealing cover airtightness helium detection equipment fills hydrogen back recovery system according to claim 3, characterized in that, ​ 10. The new energy vehicle battery sealing cover airtightness helium detection equipment fills hydrogen recovery system according to claim 1, characterized in that, ​

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