CN220961785U - Salt fog aging cabinet for lithium battery - Google Patents

Abstract

The utility model discloses a salt spray aging cabinet for a lithium battery, which relates to the technical field of lithium battery detection and comprises a cabinet body, wherein a first cavity and a second cavity are respectively arranged on two sides of the interior of the cabinet body, a group of heating rods are fixedly connected in the interior of the cabinet body, a first salt spray box and a second salt spray box are respectively fixedly connected on two sides of the cabinet body, a first water outlet pipe and a second water outlet pipe are respectively fixedly connected at water outlet ends of the first water pump and the second water pump, and a steam pipe is fixedly connected on one side, far away from the first cavity, of the second cavity.

Description

Salt fog aging cabinet for lithium battery

Technical Field

The utility model relates to the technical field of lithium battery detection, in particular to a lithium battery salt fog aging cabinet.

Background

The lithium battery is a battery using lithium metal or lithium alloy as a negative electrode material and using a nonaqueous electrolyte solution, and is widely applied in a plurality of new energy fields nowadays due to the advantages of high energy density, long service life, high rated voltage, strong high power bearing capacity, light weight, small volume and the like.

At present, the lithium battery can be subjected to aging detection in the process of processing and production, so that the aging condition of the lithium battery in the service years can be conveniently known.

In the prior art, the aging detection device for the lithium battery is mainly used for detecting hot air aging, damp heat aging or salt spray corrosion aging and the like, and the detection data of the detection mode is single and not accurate enough because the environments of the lithium battery are different when the lithium battery is used. Therefore, a lithium battery salt spray aging cabinet is needed to solve the technical problems.

Disclosure of utility model

The utility model aims to make up the defects of the prior art and provides a lithium battery salt fog aging cabinet.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lithium cell salt fog ageing cabinet, includes the cabinet body, the inside both sides of cabinet body are equipped with cavity and No. two cavities respectively, the top rigid coupling of cabinet body has the box, the inside rigid coupling of box has a set of heating rod, the both sides on cabinet body top have a set of No. two air-movers and No. two air-movers respectively, the air-out end of a air-movers and No. two air-movers respectively with box intercommunication rigid coupling, the both ends of box rear side have a gas storage tube and No. two gas storage tubes respectively rigid coupling, the front side rigid coupling of a gas storage tube has an intake pipe and No. two intake pipes, a set of gas outlet has all been seted up to one side that intake pipe and No. two intake pipes are close to each other, no. three intake pipes and No. four intake pipes are close to one side and are all seted up a set of No. two gas outlet, the both sides of cabinet body have a set of No. two salt boxes and No. two salt boxes respectively, a set of top and No. two salt boxes and No. two bottom rigid couplings have a water pump and No. two air storage tubes respectively, a water pump and No. two water pump respectively have a water pump and a water pump respectively, a water pump and a water pump respectively have a water pump and a water pump respectively, a water pump respectively have a water pump and a water pump respectively.

Preferably, both ends of the front side of the cabinet body are hinged with sealing doors, the bottoms of the first air storage pipe and the second air storage pipe are closed, and the front ends of the first air inlet pipe, the second air inlet pipe, the third air inlet pipe and the fourth air inlet pipe are closed.

Preferably, the rear side of the cabinet body is provided with a flat pressing mechanism, the flat pressing mechanism comprises a first exhaust pipe and a second exhaust pipe which are fixedly connected to the rear sides of a first chamber and a second chamber, the top ends of the first exhaust pipe and the second exhaust pipe are all in a closed shape, the top ends of the first exhaust pipe and the second exhaust pipe are fixedly connected with a second spring, the bottom ends of the second spring are fixedly connected with semicircular sealing covers, and one sides of the top ends of the first exhaust pipe and the second exhaust pipe are all provided with exhaust ports.

Preferably, the rear sides of the first air storage pipe and the second air storage pipe are respectively provided with a first electromagnetic valve and a second electromagnetic valve, and the end parts of the first water outlet pipe and the second water outlet pipe are respectively fixedly connected with a first atomizing nozzle and a second atomizing nozzle.

Preferably, the fixture includes a fixed U-shaped board of rigid coupling in a cavity and No. two cavity be close to one side mutually, a cavity and No. two cavity all rigid couplings have No. two fixed U-shaped boards of one side that keep away from mutually, two No. two fixed U-shaped boards are inside to keep away from mutually one side all rigid coupling have a set of spring, every group the tip of a spring all rigid coupling has movable U-shaped board, and movable U-shaped board all with No. two fixed U-shaped board swing joint.

Preferably, the sliding holes are formed in the top ends of the second fixed U-shaped plates, hinge seats are fixedly connected to the top ends of the movable U-shaped plates, hinge plates are hinged to the top ends of the hinge seats, and baffles are fixedly connected to the top ends of the second fixed U-shaped plates.

Preferably, the steam pipe is kept away from the cabinet body one end all installs No. three solenoid valves.

Preferably, the outside of gas vent all is fixedly connected with the connecting pipe, the top of connecting pipe all is fixedly connected with purifier, and purifier all with cabinet body rigid coupling.

Preferably, the bottom ends of the first chamber and the second chamber are fixedly connected with a collecting box, and inclined planes are formed in the bottom ends of the collecting boxes.

Preferably, two the collection box is kept away from the equal rigid coupling of one end that looks has the drain pipe, and the drain pipe all extends to the outside of the cabinet body, the drain pipe is kept away from the one end of the cabinet body and is all installed No. four solenoid valves.

The beneficial effects are that:

Compared with the prior art, the lithium battery salt fog aging cabinet has the following beneficial effects:

1. according to the utility model, the heating rod is used for heating air in the box body, the first air outlet and the second air outlet are used for respectively inputting hot air into the first chamber and the second chamber, the lithium battery is subjected to high-temperature aging detection, the first water pumping pipe of the first water pump is used for pumping salt solution from the first salt spray box, then the salt solution is discharged through the first water outlet pipe, the lithium battery is subjected to high-temperature aging detection of salt mist, the steam pipe is connected with an external air conveying pipeline, the steam enters the second chamber through the steam pipe, the lithium battery is subjected to humid heat aging detection, the steam is kept to enter the second chamber, the second water pump is used for pumping the salt solution from the second salt spray box through the second water pumping pipe, then the salt solution is discharged into the second chamber through the second water outlet pipe, and the lithium battery is subjected to humid heat aging detection of salt mist, so that the diversity of the lithium battery detection environment is improved, and the accuracy of monitoring data is improved.

2. According to the utility model, the temperature in the first chamber and the second chamber is increased, the pressure is increased, the semicircular sealing cover extrudes the second spring after receiving the upward pressure, the exhaust port is opened, the gas in the first chamber and the second chamber is exhausted, and when the internal pressure and the external pressure are balanced, the second spring drives the semicircular sealing cover to recover downwards, and the exhaust port is sealed again, so that the automatic exhaust of the gas in the first chamber and the second chamber is facilitated when the pressure in the first chamber and the second chamber is overlarge.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of another view angle structure of the present utility model;

FIG. 4 is a schematic cross-sectional view of a clamping mechanism according to the present utility model;

Fig. 5 is a schematic view of a partial cross-sectional structure of a platen press mechanism according to the present utility model.

In the figure: 1. the cabinet body, 2, the sealing door, 3, a first chamber, 4, a second chamber, 5, a box body, 6, a heating rod, 7, a first blower, 8, a second blower, 11, a first gas storage pipe, 12, a second gas storage pipe, 13, a first electromagnetic valve, 14, a second electromagnetic valve, 15, a first air inlet pipe, 16, a second air inlet pipe, 17, a third air inlet pipe, 18, a fourth air inlet pipe, 19, a first air outlet, 20, a second air outlet, 21, a first salt spray box, 22, a second salt spray box, 23, a first water pump, 24, a second water pump, 25, a first water pumping pipe, 26, a second water pumping pipe, 27 and a first water outlet pipe, 28, a second water outlet pipe, 29, a first atomizing nozzle, 30, a second atomizing nozzle, 301, a steam pipe, 302, a third electromagnetic valve, 31, a clamping mechanism, 311, a first fixed U-shaped plate, 312, a second fixed U-shaped plate, 313, a first spring, 314, a movable U-shaped plate, 32, a flat pressing mechanism, 321, a first exhaust pipe, 322, a second exhaust pipe, 323, a second spring, 324, a semicircular sealing cover, 325, an exhaust port, 33, a sliding hole, 34, a hinge seat, 35, a hinge plate, 36, a baffle, 37, a connecting pipe, 38, a purifying device, 39, a collecting box, 40, an inclined plane, 41, a drain pipe, 42 and a fourth electromagnetic valve.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1-5, the lithium battery salt spray aging cabinet comprises a cabinet body 1, a first chamber 3 and a second chamber 4 are respectively arranged on two sides of the interior of the cabinet body 1, a box body 5 is fixedly connected to the top end of the cabinet body 1, a group of heating rods 6 are fixedly connected to the interior of the box body 5, a first air blower 7 and a second air blower 8 are respectively fixedly connected to two sides of the top end of the cabinet body 1, air outlet ends of the first air blower 7 and the second air blower 8 are respectively fixedly connected with the box body 5 in a communicating manner, a first air storage pipe 11 and a second air storage pipe 12 are respectively fixedly connected to two ends of the rear side of the box body 5, a first air inlet pipe 15 and a second air inlet pipe 16 are fixedly connected to the front side of the first air storage pipe 11, a group of first air outlets 19 are respectively formed in one side, which is close to the second air inlet pipe 16, and a third air inlet pipe 17 and a fourth air inlet pipe 18 are fixedly connected to the front side of the second air storage pipe 12.

The sealing door 2 is hinged at both ends of the front side of the cabinet body 1, the bottom ends of the first gas storage pipe 11 and the second gas storage pipe 12 are in a closed shape, the front ends of the first gas inlet pipe 15, the second gas inlet pipe 16, the third gas inlet pipe 17 and the fourth gas inlet pipe 18 are in a closed shape, the sealing door 2 is designed, hot gas, steam and salt solution can be prevented from overflowing the cabinet body 1, tightness is achieved, the bottom ends of the first gas storage pipe 11, the second gas storage pipe 12, the first gas inlet pipe 15, the second gas inlet pipe 16, the third gas inlet pipe 17 and the fourth gas inlet pipe 18 are in a closed shape, the hot gas is collected, the hot gas is discharged into the first chamber 3 and the second chamber 4 completely, and the hot gas is conveyed to the outer surface of the lithium battery completely. A group of second air outlets 20 are formed in the side, close to the air inlet pipe 17 and the air inlet pipe 18, of the cabinet body 1, a first salt spray box 21 and a second salt spray box 22 are fixedly connected to the two sides of the cabinet body 1 respectively, a first water pump 23 and a second water pump 24 are fixedly connected to the top end and the bottom end of the first salt spray box 21 and the bottom end of the second salt spray box 22 respectively, a first water pumping pipe 25 and a second water pumping pipe 26 are fixedly connected to the water pumping ends of the first water pump 23 and the second water pump 24 respectively, the end parts of the first water pumping pipe 25 and the second water pumping pipe 26 extend into the first salt spray box 21 and the second salt spray box 22 respectively, and a first water outlet pipe 27 and a second water outlet pipe 28 are fixedly connected to the water outlet ends of the first water pump 23 and the second water pump 24 respectively.

The rear sides of the first gas storage pipe 11 and the second gas storage pipe 12 are respectively provided with the first electromagnetic valve 13 and the second electromagnetic valve 14, the end parts of the first water outlet pipe 27 and the second water outlet pipe 28 are respectively fixedly connected with the first atomizing nozzle 29 and the second atomizing nozzle 30, the first electromagnetic valve 13 and the second electromagnetic valve 14 are designed to control the closing and opening of the first gas storage pipe 11 and the second gas storage pipe 12, and the first atomizing nozzle 29 and the second atomizing nozzle 30 can atomize salt solution to improve the contact area of a lithium battery and the salt solution. A steam pipe 301 is fixedly connected to one side, away from the first chamber 3, of the second chamber 4.

The one end that steam pipe 301 kept away from cabinet body 1 all installs No. three solenoid valve 302, no. three solenoid valve 302's design makes things convenient for steam pipe 301 after the external gas transmission pipeline of intercommunication, controls the input of steam. The first chamber 3 and the second chamber 4 are respectively provided with a clamping mechanism 31. The fixture 31 includes a fixed U-shaped plate 311 fixedly connected on one side of a chamber 3 and a chamber 4, a fixed U-shaped plate 312 is fixedly connected on one side of a chamber 3 and a chamber 4, which are far away from each other, a group of springs 313 is fixedly connected on one side of the two fixed U-shaped plates 312, which are far away from each other, the end parts of each group of springs 313 are fixedly connected with a movable U-shaped plate 314, the movable U-shaped plates 314 are movably connected with the fixed U-shaped plates 312, the movable U-shaped plates 314 are pressed, the movable U-shaped plates 314 are extruded, the springs 313 slide in the fixed U-shaped plates 312, one ends of the lithium batteries are inserted into the fixed U-shaped plates 311, the movable U-shaped plates 314 are loosened, the springs 313 drive the movable U-shaped plates 314 to move towards one side of the lithium batteries until the other ends of the lithium batteries are clamped into the movable U-shaped plates 314, and at this time, the clamping and fixing of the lithium batteries are realized. Sliding holes 33 are formed in the top ends of the second fixed U-shaped plates 312, hinge bases 34 are fixedly connected to the top ends of the movable U-shaped plates 314, hinge plates 35 are hinged to the top ends of the hinge bases 34, baffles 36 are fixedly connected to the top ends of the second fixed U-shaped plates 312, the hinge plates 35 drive the movable U-shaped plates 314 to move through the sliding hinge plates 35, when lithium batteries are required to be placed in or taken out, the hinge plates 35 can be rotated after the hinge plates 35 are slid, the hinge plates 35 are limited by the baffles 36, and accordingly lithium batteries can be conveniently placed and taken out by workers. The bottom of chamber No. 3 and chamber No. 4 all rigid coupling has collection box 39, and inclined plane 40 has all been seted up to the bottom of collection box 39, and collection box 39 can collect the recovery to the salt solution. The two collection boxes 39 keep away from the one end all the rigid coupling have drain pipe 41, and drain pipe 41 all extends to the outside of cabinet body 1, and No. four solenoid valve 42 is all installed to the one end that the cabinet body 1 was kept away from to drain pipe 41, and the design of inclined plane 40 can be with the salt solution to drain pipe 41 one side guide gathering, and then the accessible is opened No. four solenoid valve 42, carries out concentrated emission to the salt solution after the use.

When in work, the first chamber 3 can be used for carrying out high-temperature aging detection or salt spray high-temperature aging detection on the lithium battery, the second chamber 4 can be used for carrying out damp-heat aging detection or salt spray damp-heat aging detection on the lithium battery, the clamping mechanism 31 is used for clamping and fixing the lithium battery, the exhaust ends of the first blower 7 and the second blower 8 are controlled to exhaust air from the outside, and is discharged into the box body 5 through the air outlet end, the heating rod 6 heats the air in the box body 5, hot air enters the first air storage tube 11 and the second air storage tube 12, then enters the first air inlet pipe 15, the second air inlet pipe 16, the third air inlet pipe 17 and the fourth air inlet pipe 18, and then enters the first chamber 3 and the second chamber 4 respectively through the first air outlet 19 and the second air outlet 20, so that the high-temperature aging detection can be carried out on the lithium battery, if the salt spray high temperature aging detection is needed, the salt solution is extracted from the salt spray tank 21 by the first water pumping pipe 25 of the first water pump 23, then the salt solution is discharged through the first water outlet pipe 27, so that the high-temperature aging detection of the salt fog of the lithium battery can be performed, when the wet and heat aging detection is needed, the steam pipe 301 is connected with an external gas transmission pipeline, steam enters the second chamber 4 through the steam pipe 301, the wet and heat aging detection can be carried out on the lithium battery at the moment, when the salt fog wet and heat aging detection is needed, the steam is kept to enter the second chamber 4, the second water pump 24 pumps the salt solution from the second salt spray tank 22 through the second water pumping pipe 26, then, the salt solution is discharged into the second chamber 4 through the second water outlet pipe 28, so that the salt fog humid heat aging detection can be carried out on the lithium battery, the diversity of the lithium battery detection environment is improved, the data are diversified, and the accuracy of the monitoring data is improved.

The rear side of the cabinet body 1 is provided with a flat pressing mechanism 32, the flat pressing mechanism 32 comprises a first exhaust pipe 321 and a second exhaust pipe 322 which are fixedly connected to the rear sides of a first chamber 3 and a second chamber 4, the top ends of the first exhaust pipe 321 and the second exhaust pipe 322 are all in a closed shape, the top ends of the first exhaust pipe 321 and the second exhaust pipe 322 are fixedly connected with a second spring 323, the bottom ends of the second spring 323 are fixedly connected with semicircular sealing covers 324, and an exhaust port 325 is formed in one side of the top ends of the first exhaust pipe 321 and the second exhaust pipe 322. The outside of gas vent 325 all is fixedly connected with connecting pipe 37, and the top of connecting pipe 37 all is fixedly connected with purifier 38, and purifier 38 all with cabinet body 1 rigid coupling, no. one cavity 3 and No. two cavity 4 inside exhaust gas just can discharge the external world after purifier 38 purifies, avoids polluting the environment.

When the internal temperature of the first chamber 3 and the second chamber 4 is increased, the pressure is increased, the semicircular sealing cover 324 automatically slides upwards after being subjected to upward pressure, the second spring 323 is extruded until the exhaust port 325 is opened, the gas in the first chamber 3 and the second chamber 4 is exhausted, and after the internal pressure and the external pressure are balanced, the second spring 323 drives the semicircular sealing cover 324 to recover downwards, the exhaust port 325 is sealed again, so that the internal pressure of the first chamber 3 and the second chamber 4 is over-high, and the gas in the first chamber 3 and the second chamber 4 is automatically exhausted.

Working principle: the first cavity 3 can be used for carrying out high temperature ageing detection or salt fog high temperature ageing detection to the lithium battery, the second cavity 4 can be used for carrying out the humid heat ageing detection or salt fog humid heat ageing detection to the lithium battery, utilize fixture 31 to carry out the centre gripping to the lithium battery fixedly, control the exhaust end of first air-blower 7 and second air-blower 8 from external convulsions, and in the air-out end row income box 5, the heating rod 6 heats the inside air of box 5, the steam gets into in gas storage tube 11 and the second gas storage tube 12, then get into first intake pipe 15, no. two intake pipes 16, no. three intake pipes 17 and No. four intake pipes 18, rethread gas outlet 19 and No. two gas outlets 20 are respectively in first cavity 3 and No. two cavity 4, can carry out the humid heat ageing detection to the lithium battery at this moment, if need carry out the humid heat ageing detection of salt fog high temperature ageing detection, then draw from the first water pipe 25 of first water pump 23 is followed in the first water pipe 21 and then be discharged with the salt solution through a water outlet pipe 27, can carry out the salt fog high temperature detection to the lithium battery, steam ageing detection is carried out in the second air storage tube 11 and No. two air storage tubes 12, then get into the humid heat ageing detection is carried out the second cavity 301, the humidity ageing detection is carried out to the lithium battery is carried out in No. 2, and No. two air storage tubes are respectively, the humidity ageing detection is carried out in No. 3 and No. 4 cavity 20, the humidity ageing detection is carried out respectively, this air is carried out, this time is required, and No. two cavity is carried out high temperature ageing detection, and No. is carried out, and if need carries out salt fog high temperature ageing detection, and No. water.

When the temperature in the first chamber 3 and the second chamber 4 is increased, the pressure is increased, the semicircular sealing cover 324 automatically slides upwards after being subjected to upward pressure, the second spring 323 is extruded until the exhaust port 325 is opened, the gas in the first chamber 3 and the second chamber 4 is discharged, after the internal pressure and the external pressure are balanced, the second spring 323 drives the semicircular sealing cover 324 to recover downwards, the exhaust port 325 is sealed again, and accordingly the gas in the first chamber 3 and the second chamber 4 is discharged automatically when the pressure in the first chamber 3 and the second chamber 4 is overlarge.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. Lithium cell salt fog cabinet of ageing, including the cabinet body (1), its characterized in that: the utility model discloses a salt mist spray cabinet, including cabinet body (1), air inlet pipe (15), air inlet pipe (16), air inlet pipe (17) and No. four (18) are respectively equipped with cavity (3) and No. two cavity (4) respectively to the inside both sides of cabinet body (1), the top rigid coupling of cabinet body (1) has box (5), the inside rigid coupling of box (5) has a set of heating rod (6), the both sides on cabinet body (1) top have a air-blower (7) and No. two air-blower (8) respectively, the air outlet end of a air-blower (7) and No. two air-blower (8) communicates the rigid coupling with box (5) respectively, the both ends of box (5) rear side rigid coupling has an air storage pipe (11) and No. two Chu Qiguan (12) respectively, the front side rigid coupling of an air storage pipe (11) has an air inlet pipe (15) and No. two air inlet pipe (16), a set of No. one air inlet pipe (15) and No. two air inlet pipe (16) are all offered to one side that is close to, no. two air inlet pipe (12) front side rigid coupling has No. three air inlet pipe (17) and No. four (18), no. two air inlet pipe (17) and No. two air inlet pipe (18) are close to one side of a set of No. two (20) and No. two air inlet pipe (20) are kept away from one side of a steam mist spray cabinet (20) respectively, clamping mechanisms (31) are arranged in the first chamber (3) and the second chamber (4).

2. The lithium battery salt spray aging cabinet according to claim 1, wherein: the two ends of the front side of the cabinet body (1) are hinged with sealing doors (2), the bottoms of the first gas storage pipe (11) and the second gas storage pipe Chu Qiguan (12) are closed, and the front ends of the first gas inlet pipe (15), the second gas inlet pipe (16), the third gas inlet pipe (17) and the fourth gas inlet pipe (18) are closed.

3. The lithium battery salt spray aging cabinet according to claim 2, wherein: the rear side of the cabinet body (1) is provided with a flat pressing mechanism (32), the flat pressing mechanism (32) comprises a first exhaust pipe (321) and a second exhaust pipe (322) fixedly connected to the rear side of a first chamber (3) and a second chamber (4), the top ends of the first exhaust pipe (321) and the second exhaust pipe (322) are all in a closed shape, a second spring (323) is fixedly connected to the top ends of the first exhaust pipe (321) and the second exhaust pipe (322), a semicircular sealing cover (324) is fixedly connected to the bottom end of the second spring (323), and an exhaust port (325) is formed in one side of the top ends of the first exhaust pipe (321) and the second exhaust pipe (322).

4. The lithium battery salt spray aging cabinet according to claim 1, wherein: the rear sides of the first gas storage pipe (11) and the second gas storage pipe Chu Qiguan (12) are respectively provided with a first electromagnetic valve (13) and a second electromagnetic valve (14).

5. The lithium battery salt spray aging cabinet according to claim 1, wherein: the clamping mechanism (31) comprises a first fixed U-shaped plate (311) fixedly connected to one side, close to the other side, of a first chamber (3) and a second chamber (4), a second fixed U-shaped plate (312) is fixedly connected to one side, far away from the other side, of the first chamber (3) and the second chamber (4), a group of first springs (313) are fixedly connected to one side, far away from the other side, of the inner portion of the second fixed U-shaped plate (312), the end portions of the first springs (313) are fixedly connected with movable U-shaped plates (314), and the movable U-shaped plates (314) are movably connected with the second fixed U-shaped plates (312).

6. The lithium battery salt spray aging cabinet according to claim 5, wherein: slide holes (33) are formed in the top ends of the second fixed U-shaped plates (312), hinge bases (34) are fixedly connected to the top ends of the movable U-shaped plates (314), hinge plates (35) are hinged to the top ends of the hinge bases (34), and baffle plates (36) are fixedly connected to the top ends of the second fixed U-shaped plates (312).

7. The lithium battery salt spray aging cabinet according to claim 1, wherein: the top end and the bottom end of the first salt spray box (21) and the second salt spray box (22) are respectively fixedly connected with a first water pump (23) and a second water pump (24), the water pumping ends of the first water pump (23) and the second water pump (24) are respectively fixedly connected with a first water pumping pipe (25) and a second water pumping pipe (26), the end parts of the first water pumping pipe (25) and the second water pumping pipe (26) are respectively extended into the first salt spray box (21) and the second salt spray box (22), the water outlet ends of the first water pump (23) and the second water pump (24) are respectively fixedly connected with a first water outlet pipe (27) and a second water outlet pipe (28), and the end parts of the first water outlet pipe (27) and the second water outlet pipe (28) are respectively fixedly connected with a first atomizing nozzle (29) and a second atomizing nozzle (30).

8. A lithium battery salt spray aging cabinet according to claim 3, wherein: the outside of gas vent (325) all is fixed with connecting pipe (37), the top of connecting pipe (37) all is fixed with purifier (38), and purifier (38) all is fixed with cabinet body (1).

9. The lithium battery salt spray aging cabinet according to claim 8, wherein: the bottom of the first chamber (3) and the bottom of the second chamber (4) are fixedly connected with a collecting box (39), and inclined planes (40) are formed in the bottom of the collecting box (39).

10. The lithium battery salt spray aging cabinet according to claim 9, wherein: two the one end that collecting box (39) kept away from mutually all is fixedly connected with drain pipe (41), and drain pipe (41) all extend to the outside of cabinet body (1), no. four solenoid valve (42) are all installed to the one end that cabinet body (1) was kept away from to drain pipe (41).