CN216410741U - Electrolyte sampling bottle - Google Patents

Abstract

The utility model discloses an electrolyte sampling bottle, which comprises an electrolyte sampling bottle according to the embodiment of the first aspect of the utility model, and comprises: the bottle comprises a bottle body, a bottle cap, a water inlet pipe, a water outlet pipe and a pressure relief pipe, wherein the upper end of the bottle body is provided with an opening; the bottle cap is detachably connected to the upper end of the bottle body so as to seal the bottle body; the water inlet pipe penetrates through the center of the bottle cap, the lower end of the water inlet pipe is connected with a first control valve and used for injecting electrolyte into the bottle body, and the upper end of the water inlet pipe is connected with a conical barrel with an upper end flaring; the water outlet pipe penetrates through the bottle cover and extends to the bottom of the bottle body, and the upper end of the water outlet pipe is provided with a water outlet valve for controlling liquid to flow out; the pressure release pipe is arranged on the bottle cap in a penetrating mode, and the lower end of the pressure release pipe is connected with a second control valve and used for discharging gas in the bottle body to prevent the pressure in the bottle body from being too high. The electrolyte sampling bottle provided by the utility model effectively avoids the reaction of the electrolyte contacting the outside air, has simple operation steps and effectively improves the sampling efficiency.

Description

Electrolyte sampling bottle

Technical Field

The utility model relates to the technical field of lithium battery electrolyte production, in particular to an electrolyte sampling bottle.

Background

The lithium ion battery is used as a new generation of green environment-friendly high-energy battery, the output of the lithium ion battery is rapidly increased and the application field is continuously expanded by virtue of the comprehensive advantages of the lithium ion battery, and the lithium ion battery is gradually developed from a civil mobile phone, a digital product and a portable tool to the fields of electric vehicles, energy storage, spaceflight and more extensive fields, and becomes a high-tech product which has important significance to national economy and people's life in twenty-one century. The electrolyte is one of four key materials (positive electrode, negative electrode, diaphragm and electrolyte) of the lithium ion battery, is called as 'blood' of the lithium ion battery, plays a role in conducting electrons between the positive electrode and the negative electrode in the battery, and is a guarantee for the lithium ion battery to obtain the advantages of high voltage, high specific energy and the like. The electrolyte is generally prepared from raw materials such as a high-purity organic solvent, an electrolyte lithium salt (lithium hexafluorophosphate, LiPF6), necessary additives and the like according to a certain proportion under certain conditions. The trace water and free acid content in the electrolyte for the lithium ion battery directly cause the decomposition of the electrolyte, further cause the corrosion of a battery pole piece, and further seriously affect the performance of the battery, so the moisture and the free acid content of the electrolyte are strictly controlled in the production and use processes, and the general industry is controlled below 10 PPM. In the process of producing the electrolyte, the moisture content of the electrolyte needs to be tested, the current sampling method is to sample the electrolyte in a mode of leading the electrolyte from a barrel containing the electrolyte into a small bottle with a cover, the sampling mode is not only troublesome to operate, but also extremely causes the electrolyte to absorb moisture in the air, and the deviation is easily caused to the test result.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an electrolyte sampling bottle which can isolate air and electrolyte during sampling so as to ensure that the test result is accurate.

An electrolyte sampling bottle according to an embodiment of a first aspect of the utility model includes: the bottle comprises a bottle body, a bottle cap, a water inlet pipe, a water outlet pipe and a pressure relief pipe, wherein the upper end of the bottle body is provided with an opening; the bottle cap is detachably connected to the upper end of the bottle body so as to seal the bottle body; the water inlet pipe penetrates through the bottle cap, the lower end of the water inlet pipe is connected with a first control valve and used for injecting electrolyte or inert gas into the bottle body, and the upper end of the water inlet pipe is connected with a conical barrel with an expanded upper end; the water outlet pipe penetrates through the bottle cap and extends to the bottom of the bottle body, and one end, away from the bottle body, of the water outlet pipe is provided with a water outlet valve used for controlling liquid to flow out; the pressure relief pipe penetrates through the bottle cap and is connected with a second control valve.

The electrolyte sampling bottle provided by the embodiment of the utility model at least has the following technical effects: according to the electrolyte sampling bottle provided by the embodiment of the utility model, the water inlet pipe is in butt joint with the electrolyte sampling pipeline, the electrolyte enters the bottle through the first control valve, and the gas in the bottle body is compressed by using the pressure of the electrolyte during sampling. The second control valve discharges gas in the bottle body when gas pressure in the bottle is too high so as to prevent the bottle cap from being damaged, when electrolyte in the bottle needs to be discharged, the water outlet valve is opened, the electrolyte is pressed out from the water outlet pipe by using the pressure of the gas in the bottle, the electrolyte is effectively prevented from contacting the external air to react, the operation step is simple, and the sampling efficiency is effectively improved.

According to some embodiments of the utility model, the outer peripheral wall of the water inlet pipe is provided with threads, the water inlet pipe is sleeved with a first nut which abuts against the lower end of the bottle cap, the upper end of the water inlet pipe is connected with a conical barrel with an upper end flaring, the diameter of the lower end of the conical barrel is larger than that of the water inlet pipe, and the lower end of the conical barrel abuts against the upper end of the bottle cap.

According to some embodiments of the utility model, a mounting boss is arranged around the outer side of the water outlet pipe, the lower end of the mounting boss abuts against the upper end of the bottle cap, threads are arranged on the outer peripheral wall of the water outlet pipe, and a second nut abutting against the lower end of the bottle cap is sleeved on the water outlet pipe.

According to some embodiments of the utility model, the pressure relief pipe comprises a connecting section and a pressure relief section, the connecting section is connected above the pressure relief section, the diameter of the pressure relief section is larger than that of the connecting section, the connecting section penetrates through the bottle cap, the upper end of the pressure relief section abuts against the lower end of the bottle cap, the outer peripheral wall of the connecting section is provided with threads, and a third nut abutting against the upper end of the bottle cap is sleeved on the connecting section.

According to some embodiments of the utility model, a first sealing ring is arranged between the lower end of the conical cylinder and the upper end of the bottle cap, a second sealing ring is arranged between the lower end of the mounting boss and the upper end of the bottle cap, and a third sealing ring is arranged between the upper end of the pressure relief section and the lower end of the bottle cap.

According to some embodiments of the utility model, a fourth seal ring is disposed within the tapered barrel.

According to some embodiments of the present invention, the first control valve includes a valve body, a spring, and a sealing ball, the valve body is a hollow cylinder, the upper end of the valve body is provided with a valve water inlet communicated with the water inlet pipe, the lower end of the valve body is provided with a valve water outlet communicated with the inner space of the bottle body, the spring is disposed in the valve body and abuts against the lower end of the inner side of the valve body, the sealing ball is disposed in the valve body and abuts against the upper end of the spring, and the sealing ball abuts against the valve water inlet and seals the valve water inlet under the action of the spring.

According to some embodiments of the utility model, a first flange is arranged around the lower end of the bottle cap, a second flange is arranged around the upper end of the bottle body, and the first flange and the second flange are connected through bolts.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is a schematic view of a first control valve of an embodiment of the present invention;

FIG. 3 is a schematic view of a second control valve of the embodiment of the present invention;

fig. 4 is an enlarged view at a in fig. 1.

Reference numerals:

a body 100, a second flange 110;

the bottle cap 200, a first sealing ring 201, a second sealing ring 202, a third sealing ring 203, a fourth sealing ring 204 and a first flange 210;

the water inlet pipe 300, the first control valve 310, the valve body 311, the spring 312, the sealing ball 313, the valve water inlet 314, the valve water outlet 315, the conical cylinder 320 and the first nut 330;

the water outlet pipe 400, the water outlet valve 410, the mounting boss 420 and the second nut 430;

the pressure relief pipe 500, the connecting section 501, the pressure relief section 502, the second control valve 510 and the third nut 520.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, an electrolyte sampling bottle according to an embodiment of the present invention includes: the bottle comprises a bottle body 100, a bottle cap 200, a water inlet pipe 300, a water outlet pipe 400 and a pressure relief pipe 500. The upper end of the bottle body 100 is open, the bottle cap 200 is detachably connected to the upper end of the bottle body 100 to seal the bottle body 100, and the bottle cap 200 is detachable and convenient to clean; the bottle cap 200 and the bottle body 100 are both made of stainless steel materials, so that the corrosion of electrolyte is avoided. The water inlet pipe 300 penetrates through the center of the bottle cap 200, the first control valve 310 is welded at the lower end of the water inlet pipe 300, the first control valve 310 is a one-way valve and is used for injecting electrolyte into the bottle body 100, the first control valve 310 enables the electrolyte to enter the bottle body 100 only from the water inlet pipe 300 and not enter the water inlet pipe 300 from the bottle body 100, and the electrolyte sequentially passes through the water inlet pipe 300 and the first control valve 310 from a sampling pipeline and then enters the bottle body 100 to compress gas in the bottle body 100; the water outlet pipe 400 penetrates through the bottle cap 200 and extends to the bottom of the bottle body 100, the upper end of the water outlet pipe 400 is provided with a water outlet valve 410 for controlling liquid to flow out, when the electrolyte in the bottle needs to be discharged, the water outlet valve 410 is opened, and the electrolyte is pressed out of the water outlet pipe 400 by using the pressure of gas in the bottle; the pressure release pipe 500 penetrates through the bottle cap 200, the second control valve 510 is welded at the lower end of the pressure release pipe 500, the second control valve 510 is a one-way valve, and the second control valve 510 is used for discharging gas in the bottle body 100 when the gas pressure in the bottle is too high so as to prevent the bottle cap 200 from being damaged due to the fact that the pressure in the bottle body 100 is too high. The opening pressure of the second control valve 510 may be 0.5 to 0.9Mpa, and preferably, the opening pressure of the second control valve 510 is 0.6 Mpa. It is expected that, in order to prevent the electrolyte from contacting with air, an inert gas such as argon gas is introduced into the bottle body 100 from the first control valve 310 before sampling, and the excess gas is discharged from the second control valve 510 to fill the bottle with the inert gas.

According to the electrolyte sampling bottle provided by the utility model, the water inlet pipe 300 is in butt joint with an electrolyte sampling pipeline, electrolyte enters the bottle through the first control valve 310, and gas in the bottle body 100 is compressed by using the pressure of the electrolyte during sampling. The second control valve 510 discharges the gas in the bottle body 100 when the gas pressure in the bottle is too high so as to prevent the bottle cap 200 from being damaged, when the electrolyte in the bottle needs to be discharged, the water outlet valve 410 is opened, the electrolyte is pressed out from the water outlet pipe 400 by using the pressure of the gas in the bottle, the electrolyte is effectively prevented from contacting the external air to react, the operation steps are simple, and the sampling efficiency is effectively improved.

In some embodiments of the present invention, a tapered barrel 320 with a flared upper end is welded to the upper end of the water inlet pipe 300, the size of the tapered barrel 320 matches the size of the electrolyte sampling pipe, the tapered barrel 320 is used for abutting the electrolyte sampling pipe, the outer circumferential wall of the water inlet pipe 300 is provided with threads, the water inlet pipe 300 is made of a stainless steel pipe, the bottle cap 200 is provided with a hole with the size equal to that of the water inlet pipe 300 for the water inlet pipe 300 to pass through, the water inlet pipe 300 is sleeved with a first nut 330 abutting against the lower end of the bottle cap 200, the threads on the inner side of the first nut 330 are engaged with the threads on the outer circumferential wall of the water inlet pipe 300, the diameter of the tapered barrel 320 is larger than that of the water inlet pipe 300, and the lower end of the tapered barrel 320 abuts against the upper end of the bottle cap 200. The bottle cap 200 is sandwiched between the tapered barrel 320 and the first nut 330. When the water inlet pipe 300 is disassembled, the first nut 330 is only needed to be disassembled to take out the water inlet pipe 300 from the upper part of the bottle cap 200, so that the first control valve 310 on the water inlet pipe 300 can be conveniently maintained and replaced.

In some embodiments of the present invention, a mounting boss 420 is circumferentially disposed on an outer side of the water outlet pipe 400, the mounting boss 420 is welded on an outer side of the water outlet pipe 400, a hole having a size equal to that of the water outlet pipe 400 is formed in the bottle cap 200 to allow the water outlet pipe 400 to pass through, a lower end of the mounting boss 420 abuts against an upper end of the bottle cap 200, a thread is disposed on an outer circumferential wall of the water outlet pipe 400, and a second nut 430 abutting against a lower end of the bottle cap 200 is sleeved on the water outlet pipe 400. The inner side thread of the second nut 430 is engaged with the thread of the outer peripheral wall of the water outlet pipe 400, the bottle cap 200 is clamped between the mounting boss 420 and the second nut 430, and the water outlet pipe 400 can be taken out from the upper side of the bottle cap 200 only by dismounting the second nut 430 during disassembly.

In some embodiments of the present invention, the pressure relief tube 500 includes a connection section 501 and a pressure relief section 502, the diameter of the pressure relief section 502 is greater than that of the connection section 501, the connection section 501 is welded above the pressure relief section 502, a hole with a size equal to that of the connection section 501 is formed in the bottle cap 200 to allow the connection section 501 to pass through, the upper end of the pressure relief section 502 abuts against the lower end of the bottle cap 200, the outer peripheral wall of the connection section 501 is provided with threads, a third nut 520 abutting against the upper end of the bottle cap 200 is sleeved on the connection section 501, the threads inside the third nut 520 are engaged with the threads on the outer peripheral wall of the connection section 501, the bottle cap 200 is clamped between the pressure relief section 502 and the third nut 520, the pressure relief tube 500 can be taken out from the lower side of the bottle cap 200 only by detaching the third nut 520, and maintenance and replacement of the second control valve 510 on the pressure relief tube 500 are facilitated.

In some embodiments of the present invention, a first sealing ring 201 is disposed between the lower end of the tapered cylinder 320 and the upper end of the cap 200, and the first sealing ring 201 seals a gap between the lower end of the tapered cylinder 320 and the upper end of the cap 200 to prevent fluid inside the cap 200 from leaking. A second sealing ring 202 is arranged between the lower end of the mounting boss 420 and the upper end of the bottle cap 200, and the second sealing ring 202 seals a gap between the lower end of the mounting boss 420 and the upper end of the bottle cap 200 to prevent fluid inside the bottle cap 200 from leaking. A third sealing ring 203 is arranged between the upper end of the pressure relief section 502 and the lower end of the bottle cap 200, and the third sealing ring 203 seals a gap between the upper end of the pressure relief section 502 and the lower end of the bottle cap 200 to prevent fluid inside the bottle cap 200 from leaking.

In some embodiments of the present invention, a fourth seal ring 204 is disposed within the tapered barrel 320. The fourth sealing ring 204 can play a sealing role when being connected with the electrolyte sampling pipeline, so that leakage is prevented when the electrolyte sampling pipeline is connected with the conical cylinder 320.

In some embodiments of the present invention, the first control valve 310 includes a valve body 311, a spring 312, and a sealing ball 313. The valve body 311 is a hollow cylinder, the upper end of the valve body 311 is provided with a valve water inlet 314, the valve water inlet 314 is communicated with the water inlet pipe 300, the lower end of the valve body 311 is provided with a valve water outlet 315, the valve water outlet 315 is communicated with the inner space of the bottle body 100, the diameter of the valve water inlet 314 is equal to that of the valve water outlet 315, and the diameter of the spring 312 is larger than that of the valve water inlet 314. The spring 312 is arranged in the valve body 311 and is abutted against the inner lower end of the valve body 311, the sealing ball 313 is arranged in the valve body 311 and is abutted against the upper end of the spring 312, and the diameter of the sealing ball 313 is larger than that of the spring 312. The sealing ball 313 is abutted against the valve water inlet 314 and seals the valve water inlet 314 under the action of the spring 312, when the pressure in the water inlet pipe 300 is greater than the sum of the elastic force of the spring 312 and the pressure in the valve body 311, electrolyte can enter the valve body 311 from the valve water inlet 314, and when the pressure in the valve body 311 is greater than the pressure in the water inlet pipe 300, the sealing ball 313 is abutted against the valve water inlet 314 and seals the valve water inlet 314 under the action of the elastic force of the spring 312 and the pressure in the valve body 311, so that the effect of one-way circulation is achieved.

It is contemplated that the structure of the second control valve 510 is the same as the structure of the first control valve 310 and will not be described in detail.

In some embodiments of the present invention, a first flange 210 is welded around the lower end of the bottle cap 200, and a second flange 110 is welded around the upper end of the bottle body 100, wherein the first flange 210 and the second flange 110 have the same size. The first flange 210 is connected to the second flange 110 by bolts.

The working principle is as follows: before sampling, the bottle cap 200 and the bottle body 100 are respectively cleaned, then the bottle cap 200 is installed on the bottle body 100, purging is carried out in the bottle body 100, a compressed gas bottle or other equipment pipe orifices for storing inert gas are inserted into the conical cylinder 320, the pressure of the inert gas in the water inlet pipe 300 is greater than the pressure in the bottle body 100, the first control valve 310 is opened, so that the inert gas such as argon is introduced into the bottle body 100, when the pressure in the bottle body 100 is greater than 0.6Mpa, the inert gas is discharged from the second control valve 510, the air continuously introduced into the bottle body 100 is completely replaced by the inert gas, the equipment pipe orifices for storing the inert gas are removed from the conical cylinder 320, the pressure in the bottle body 100 is greater than the atmospheric pressure, and the first control valve 310 is closed, so that the space in the bottle is isolated from the air. During the sample, insert a conical cylinder 320 with the pipeline of electrolyte sample, make electrolyte let in inlet tube 300, the pressure of electrolyte is greater than body 100 internal pressure in inlet tube 300, first control valve 310 opens, make electrolyte get into in the body 100, second control valve 510 discharges unnecessary gas, avoid body 100 internal pressure too big, then shift out a conical cylinder 320 with the pipeline of electrolyte sample, pressure is less than body 100 internal pressure in inlet tube 300 this moment, first control valve 310 closes, make the bottle inner space isolated with the air. Can accomplish the sample, during the detection electrolyte, open outlet valve 410, utilize the interior gaseous pressure of bottle to extrude electrolyte from outlet pipe 400 automatically, need not auxiliary assembly and can take out the electrolyte that awaits measuring, or when the body internal pressure is not enough, pour into inert gas again and discharge electrolyte is whole.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. An electrolyte sampling bottle, characterized by comprising:

the bottle body (100), the upper end of the bottle body (100) is open;

a bottle cap (200) detachably coupled to an upper end of the bottle body (100) to close the bottle body (100);

the water inlet pipe (300) penetrates through the bottle cap (200), the lower end of the water inlet pipe (300) is connected with a first control valve (310), and the water inlet pipe (300) is used for injecting electrolyte or inert gas into the bottle body (100);

the water outlet pipe (400) penetrates through the bottle cap (200) and extends to the bottom of the bottle body (100), and a water outlet valve (410) used for controlling liquid to flow out is arranged at one end, away from the bottle body (100), of the water outlet pipe (400);

the pressure relief pipe (500) penetrates through the bottle cap (200), and the second control valve (510) is arranged on the pressure relief pipe (500).

2. An electrolyte sampling bottle as in claim 1, wherein: the outer peripheral wall of the water inlet pipe (300) is provided with threads, the water inlet pipe (300) is provided with a first nut (330) which is abutted to the lower end of the bottle cap (200), the upper end of the water inlet pipe (300) is connected with a tapered cylinder (320) with an upper end flaring, the diameter of the lower end of the tapered cylinder (320) is larger than that of the water inlet pipe (300), and the lower end of the tapered cylinder (320) is abutted to the upper end of the bottle cap (200).

3. An electrolyte sampling bottle as in claim 2, wherein: the outlet pipe (400) outside is encircleed and is provided with installation boss (420), installation boss (420) lower extreme with bottle lid (200) upper end offsets, outlet pipe (400) periphery wall is equipped with the screw thread, the cover is equipped with on outlet pipe (400) with second nut (430) that bottle lid (200) lower extreme offset.

4. An electrolyte sampling bottle as in claim 3 wherein: pressure release pipe (500) are including linkage segment (501) and pressure release section (502), linkage segment (501) are connected pressure release section (502) top, pressure release section (502) diameter is greater than linkage segment (501) diameter, linkage segment (501) pass bottle lid (200) just pressure release section (502) upper end with bottle lid (200) lower extreme offsets, linkage segment (501) periphery wall is equipped with the screw thread, the cover is equipped with on linkage segment (501) with third nut (520) that offset in bottle lid (200) upper end.

5. An electrolyte sampling bottle as in claim 4 wherein: the improved bottle cap is characterized in that a first sealing ring (201) is arranged between the lower end of the conical cylinder (320) and the upper end of the bottle cap (200), a second sealing ring (202) is arranged between the lower end of the mounting boss (420) and the upper end of the bottle cap (200), and a third sealing ring (203) is arranged between the upper end of the pressure relief section (502) and the lower end of the bottle cap (200).

6. An electrolyte sampling bottle as in claim 5 wherein: and a fourth sealing ring (204) is arranged in the conical cylinder (320).

7. An electrolyte sampling bottle as in claim 1, wherein: the first control valve (310) comprises a valve body (311), a spring (312) and a sealing ball (313), the valve body (311) is a hollow cylinder, a valve water inlet (314) communicated with the water inlet pipe (300) is formed in the upper end of the valve body (311), a valve water outlet (315) communicated with the inner space of the bottle body (100) is formed in the lower end of the valve body (311), the spring (312) is arranged in the valve body (311) and abutted against the inner side lower end of the valve body (311), the sealing ball (313) is arranged in the valve body (311) and abutted against the upper end of the spring (312), and the sealing ball (313) is abutted against the valve water inlet (314) under the action of the spring (312) and seals the valve water inlet (314).

8. An electrolyte sampling bottle as in claim 1, wherein: the bottle cap is characterized in that a first flange (210) is arranged at the lower end of the bottle cap (200) in a surrounding mode, a second flange (110) is arranged at the upper end of the bottle body (100) in a surrounding mode, and the first flange (210) is connected with the second flange (110) through bolts.

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