CN211317893U

CN211317893U - Device for collecting gas generated after explosion of lithium ion battery safety test

Info

Publication number: CN211317893U
Application number: CN201922439503.XU
Authority: CN
Inventors: 吴曲勇; 邵洋洋
Original assignee: Suzhou Maxon New Energy Co ltd
Current assignee: Shandong Lvneng Huanyu Low Carbon Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-21
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a lithium cell test field discloses a collect gaseous device after lithium ion battery safety test explosion, to the problem that gaseous collection device after current lithium ion battery explosion test lacks filter equipment and lacks explosion buffer structure, now proposes following scheme, and it includes test chamber, buffer tank, rose box, sampling box and inflation bag, one side in test chamber is fixed with the test port, and one side in test chamber is fixed with the protective gas and inserts the pipe, through first pipeline intercommunication between test chamber and the buffer tank, through second pipeline intercommunication between rose box and the buffer tank, through third pipeline intercommunication between sampling box and the rose box. The utility model discloses simple structure, design benefit, easy operation not only makes things convenient for the particulate matter in with the explosive gas to get rid of, and the impact force that brings when on the other hand also can cushion the explosion also makes things convenient for simultaneously to carry out quick sample, easily uses widely in the gas after the explosion.

Description

Device for collecting gas generated after explosion of lithium ion battery safety test

Technical Field

The utility model relates to a lithium cell test field especially relates to a collect gaseous device behind lithium ion battery safety test explosion.

Background

The lithium ion battery has the advantages of high voltage, long charging and discharging life, small environmental pollution, low self-discharging efficiency and the like, and is widely applied to daily life of people at present. In order to ensure the performance of lithium cell, need carry out strict detection to each item data index of lithium cell before the lithium cell drops into use, the test to the gaseous test after the lithium ion battery explosion test is one to lithium cell capability test, among the prior art, it is all fairly simple to collect the gaseous device structure after the lithium ion battery safety test explosion, be exactly a simple collection tank, the inside of the gaseous suction collection tank after will exploding, then take a sample to the gas in the collection tank again, this kind of device has more problem, mix solid particulate matter easily in the gas, secondly the impact force that brings when being difficult to the buffering battery explosion, cause the vibrations of collection tank easily, for this reason, this scheme has designed a gas device after collecting the lithium ion battery safety test explosion.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of collect gas device after lithium ion battery safety test explodes has solved the problem that the gas collecting device after the current lithium ion battery explosion test lacks filter equipment and lacks explosion buffer structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a device for collecting gas generated after explosion of a lithium ion battery safety test comprises a test chamber, a buffer tank, a filter box, a sampling tank and an expansion bag, wherein a test port is fixed on one side of the test chamber, a protective gas access pipe is fixed on one side of the test chamber, the test chamber is communicated with the buffer tank through a first pipeline, the filter box is communicated with the buffer tank through a second pipeline, the sampling tank is communicated with the filter box through a third pipeline, a filter screen is detachably fixed on the inner wall of the filter box and is positioned outside the inlet of the third pipeline, a cleaning port is formed in one side of the filter box, a sealing plate is fixed outside the cleaning port, an exhaust fan is fixed at the top of the sampling tank, a connecting pipe is fixed at the air inlet of the exhaust fan, the other end of the connecting pipe extends to the inside of the sampling tank, and an exhaust valve is installed on the connecting pipe, the sampling device comprises a sampling box, a hose, an expansion bag, a hose, a sampling valve and a hose, wherein the sampling tube is fixed on the outer wall of one side of the sampling box, the hose is fixed at the other end of the sampling tube in a detachable mode, the sampling valve is fixed on each sampling tube, and the expansion bag is fixedly connected and communicated with one side of the sampling box.

Preferably, be fixed with fixed frame on the inner wall of rose box, one side of filter screen is fixed with the connecting plate, and the opposite side of filter screen is fixed with the fixed block, the one end of connecting plate extends to the inside of fixed frame and coincide with fixed frame, and two fixed blocks all with pass through screw fixed connection between the inner wall of rose box.

Preferably, one end of the connecting plate, which is positioned inside the fixing frame, is of an isosceles trapezoid structure.

Preferably, a shielding gas valve is fixed outside the shielding gas access pipe.

Preferably, the hose and the sampling tube are fixedly connected through a pneumatic structure.

Preferably, the test cavity, the buffer tank, the filter box and the sampling box are all made of stainless steel materials.

The utility model discloses in:

1. through the setting of rose box and filter screen, can filter the particulate matter in the explosive gas, and through the cooperation between fixed frame, connecting plate and the fixed block, then made things convenient for the dismouting of filter screen, simultaneously, the setting of clearance mouth and closing plate is conveniently cleared up the particulate matter of rose box inside.

2. Through the setting of sampling tube and hose, the convenience is taken a sample fast to the inside gas of sampling box, and the setting of hose then makes that external sampling device can be more convenient be together fixed with the hose.

3. The setting through protection gas access pipe lets in the protection gas in the convenience box test box, then conveniently manages to find time the gas in the sample box through the setting of air exhauster and connecting pipe totally, and the setting of inflation bag then can cushion the impact force that brings when the lithium cell explodes.

The utility model discloses simple structure, design benefit, easy operation not only makes things convenient for the particulate matter in with the explosive gas to get rid of, and the impact force that brings when on the other hand also can cushion the explosion also makes things convenient for simultaneously to carry out quick sample, easily uses widely in the gas after the explosion.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the internal structure schematic diagram of the filtering box of the present invention.

Fig. 3 is a front view of the filter screen and the fixing frame of the present invention.

FIG. 4 is a left side view of the sampling box of the present invention

Reference numbers in the figures: the device comprises a test cavity 1, a buffer tank 2, a filter tank 3, a sampling tank 4, an expansion bag 5, a test port 6, a protective gas access pipe 7, a protective gas valve 8, a first pipeline 9, a second pipeline 10, a sealing plate 11, a third pipeline 12, an exhaust fan 13, a connecting pipe 14, an exhaust valve 15, a sampling pipe 16, a cleaning port 17, a fixing frame 18, a connecting plate 19, a filter screen 20, a fixing block 21, a sampling valve 22, a hose 23 and a pneumatic connector 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

Referring to fig. 1-3, a device for collecting gas after explosion in a safety test of a lithium ion battery comprises a test chamber 1, a buffer tank 2, a filter tank 3, a sampling tank 4 and an expansion bag 5, wherein the test chamber 1, the buffer tank 2, the filter tank 3 and the sampling tank 4 are all made of stainless steel materials, the stainless steel materials can avoid rusting and have high strength, a test port 6 is fixed on one side of the test chamber 1, a shielding gas access pipe 7 is fixed on one side of the test chamber 1, a shielding gas valve 8 is fixed outside the shielding gas access pipe 7, the shielding gas access pipe 7 can conveniently introduce shielding gas into the test chamber 1, the test chamber 1 is communicated with the buffer tank 2 through a first pipeline 9, the filter tank 3 is communicated with the buffer tank 2 through a second pipeline 10, the sampling tank 4 is communicated with the filter tank 3 through a third pipeline 12, and a filter screen 20 is detachably fixed on the inner wall of the filter tank 3, the filter screen 20 is located outside the inlet of the third pipeline 12, and particulate matters in the explosive gas can be filtered out through the filter screen 20, so that the gas entering the sampling box 4 does not contain particulate matters.

Fixed frame 18 is fixed on the inner wall of rose box 3, one side of filter screen 20 is fixed with connecting plate 19, the opposite side of filter screen 20 is fixed with fixed block 21, the one end of connecting plate 19 extends to the inside of fixed frame 18 and coincide with fixed frame 18, two fixed blocks 21 all with pass through screw fixed connection between the inner wall of rose box 3, through frame 18, cooperation between connecting plate 19 and the fixed block 21, the dismouting of filter screen 20 has been made things convenient for, the connecting plate 19 is located the inside one end of fixed frame 18 and is the isosceles trapezoid structure, the isosceles trapezoid structure makes things convenient for connecting plate 19 to insert the inside of fixed frame 18.

Clearance mouth 17 has been seted up to one side of rose box 3, clearance mouth 17's external fixation has closing plate 11, the solid particulate matter in the rose box 3 is conveniently cleared up in setting up of clearance mouth 17, the top of sampling box 4 is fixed with air exhauster 13, the air intake of air exhauster 13 is fixed with connecting pipe 14, the other end of connecting pipe 14 extends to the inside of sampling box 4, then conveniently manage to find time the gas in the sampling box totally through setting up of air exhauster 13 and connecting pipe 14, thereby the convenience is prepared to next test.

Install extraction valve 15 on connecting pipe 14, be fixed with a plurality of sampling tubes 16 on the one side outer wall of sampling box 4, the equal detachable formula of the other end of a plurality of sampling tubes 16 is fixed with hose 23, all be fixed with sampling valve 22 on a plurality of sampling tubes 16, the setting of hose 23 then makes external sampling device can be more convenient fixed together with hose 23, thereby reach the purpose of quick sample, through pneumatic structure 24 fixed connection between hose 23 and the sampling tube 16, the dismouting of hose 23 has been made things convenient for.

The inflation bag 5 is fixedly connected and communicated with one side of the sampling box 4, and the inflation bag 55 is a sealed, inflatable bag which can be rapidly inflated when the internal air pressure becomes high.

The working principle is as follows: when an experimental sample explodes in the test cavity 1, gas in the test cavity 1 leaks into the buffer tank 2 and does not explode, solid particles in the explosive gas can be filtered out when a battery explodes after passing through the filter screen, the filtered gas enters the collecting box 4, when sampling is carried out, an external sampling device is butted with the hose 23, then the sampling valve 22 is opened to quickly sample at any time, the expansion bag 5 is a sealed and expandable bag, when the internal air pressure is increased, the expansion bag can be quickly expanded, when solid particles in the filter box 3 need to be cleaned, the sealing plate 11 can be opened to clean the inside of the filter box 3, when the filter screen 20 is disassembled, the screw on the fixing block 21 is screwed off, then the connecting plate 19 is pulled out from the fixing frame 18, and conversely, when the filter screen 20 is installed, the connecting plate 19 is directly inserted into the fixing frame 18, then, the inner walls of the fixed block 21 and the filter box 3 are fixed together by using screws, when the gas in the collecting box 4 needs to be exhausted, the air suction valve 15 is opened, and then the exhaust fan 13 is started.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The device for collecting the gas after the explosion of the lithium ion battery safety test comprises a test chamber (1), a buffer tank (2), a filter box (3), a sampling box (4) and an expansion bag (5), and is characterized in that one side of the test chamber (1) is fixed with a test port (6), one side of the test chamber (1) is fixed with a protective gas access pipe (7), the test chamber (1) is communicated with the buffer tank (2) through a first pipeline (9), the filter box (3) is communicated with the buffer tank (2) through a second pipeline (10), the sampling box (4) is communicated with the filter box (3) through a third pipeline (12), a filter screen (20) is detachably fixed on the inner wall of the filter box (3), the filter screen (20) is positioned outside the inlet of the third pipeline (12), one side of the filter box (3) is provided with a cleaning port (17), the outside of clearance mouth (17) is fixed with closing plate (11), the top of sampling box (4) is fixed with air exhauster (13), and the air intake of air exhauster (13) is fixed with connecting pipe (14), and the other end of connecting pipe (14) extends to the inside of sampling box (4), install extraction valve (15) on connecting pipe (14), be fixed with a plurality of sampling tubes (16) on the outer wall of one side of sampling box (4), the equal detachable formula of the other end of a plurality of sampling tubes (16) is fixed with hose (23), and is a plurality of all be fixed with sample valve (22) on sampling tube (16), inflation bag (5) and one side fixed connection of sampling box (4) just communicate with each other.

2. The device for collecting the gas generated after the explosion of the lithium ion battery safety test according to claim 1, wherein a fixing frame (18) is fixed on the inner wall of the filter box (3), a connecting plate (19) is fixed on one side of the filter screen (20), a fixing block (21) is fixed on the other side of the filter screen (20), one end of the connecting plate (19) extends into the fixing frame (18) and is matched with the fixing frame (18), and the two fixing blocks (21) are fixedly connected with the inner wall of the filter box (3) through screws.

3. The device for collecting the gas generated after the lithium ion battery safety test explosion according to claim 2, is characterized in that one end of the connecting plate (19) positioned inside the fixing frame (18) is of an isosceles trapezoid structure.

4. The device for collecting the gas after the explosion of the safety test of the lithium ion battery according to claim 1, wherein a shielding gas valve (8) is fixed outside the shielding gas access pipe (7).

5. The device for collecting the gas after the explosion of the lithium ion battery safety test according to claim 1, wherein the hose (23) is fixedly connected with the sampling tube (16) through a pneumatic structure (24).

6. The device for collecting the gas generated after the explosion of the lithium ion battery safety test according to claim 1, wherein the test chamber (1), the buffer tank (2), the filter box (3) and the sampling box (4) are all made of stainless steel materials.