Lithium salt sampling container

Abstract

The utility model provides a lithium salt sampling container, which relates to the technical field of lithium batteries and comprises a sampling container main body, the accommodating cavity capable of being opened and closed is positioned in the sampling container main body; the sealing valve is used for controlling opening and closing of the accommodating cavity; wherein a cavity is formed in the sampling container main body, a sealing plug is in sliding sealing fit in the cavity, and the cavity, the sealing plug and the sealing valve jointly define a space to form a containing cavity. By expanding the volume of the accommodating cavity, the lithium salt in the container for storing the lithium salt can be sucked into the accommodating cavity, and the protective gas in the container for storing the lithium salt can be sucked into the accommodating cavity, so that a nitrogen atmosphere is formed in the accommodating cavity, replacement operation on the accommodating cavity during sampling in the prior art is not needed, and the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and particularly relates to a lithium salt sampling container. Background Art

[0002] With the rapid development of new energy vehicles, the consumption of lithium salts, which are the main raw materials of lithium secondary batteries, is also increasing. These lithium salts, such as lithium hexafluorophosphate, are powder materials. When exposed to air, they will undergo a violent decomposition reaction with the moisture in the air, thus releasing corrosive white smoke. Therefore, it is strictly prohibited for lithium salts to come into contact with air.

[0003] Currently, the operation of sampling lithium salts from a stainless - steel lithium salt storage barrel (with nitrogen protection) is as follows: First, an external vacuum - pumping device and a nitrogen source are connected to make the inside of the tank container for sampling in a nitrogen atmosphere, and then the tank container is connected to the discharge port of the stainless - steel lithium salt storage barrel for sampling.

[0004] Although the above operation can effectively ensure the safety of the operation process and the quality of the sample, it is necessary to perform multiple vacuum - pumping and nitrogen replacement operations on the tank container separately to ensure that the inside of the tank container is in a nitrogen atmosphere. The sampling process is a bit cumbersome and needs to be improved. Summary of the Utility Model

[0005] In view of the above situation, the utility model provides a lithium salt sampling container, aiming to solve the technical problem that the existing sampling process is a bit cumbersome.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] The utility model provides a lithium salt sampling container, comprising:

[0008] A sampling container main body;

[0009] An openable and closable accommodating cavity, located inside the sampling container main body;

[0010] A sealing valve, used to control the opening and closing of the accommodating cavity;

[0011] Among them, there is a cavity inside the sampling container main body, and a sealing plug is slidably and sealingly fitted inside the cavity. The cavity, the sealing plug and the sealing valve jointly define a space to form the accommodating cavity.

[0012] In some embodiments of the utility model, the lower end of the cavity is open.

[0013] In some embodiments of the utility model, the sealing plug is connected with a driving rod, and the driving rod is located outside the cavity.

[0014] In some embodiments of the utility model, a end - cover is detachably connected to the open lower end of the cavity, and the driving rod movably penetrates through the end - cover.

[0015] In some embodiments of the present utility model, the lower open end of the cavity is connected to the end cap by screws.

[0016] In some embodiments of the present utility model, the driving rod is threadedly connected to the end cap. The driving rod is rotatably connected to a connecting rod, and the connecting rod is connected to the sealing plug.

[0017] In some embodiments of the present utility model, one end of the driving rod has a convex ring, and one end of the connecting rod has an annular groove matching the convex ring.

[0018] In some embodiments of the present utility model, the sampling container body has a flange.

[0019] In some embodiments of the present utility model, the side wall of the accommodating cavity has an observation window.

[0020] In some embodiments of the present utility model, the observation window is provided with scales.

[0021] The embodiments of the present utility model have at least the following advantages or beneficial effects:

[0022] By expanding the volume of the accommodating cavity, the lithium salt in the container for storing the lithium salt can be sucked into the accommodating cavity, and the protective gas (nitrogen) in the container for storing the lithium salt can also be sucked into the accommodating cavity, so as to form a nitrogen atmosphere in the accommodating cavity. There is no need to perform a replacement operation on the accommodating cavity during sampling as in the prior art, and the operation is more convenient.

[0023] Other features and advantages of the present utility model will be described in the subsequent description, and some of them will become obvious from the description, or can be understood by implementing the present utility model. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of a lithium salt sampling container.

[0026] Reference numerals: 6 - sampling container body, 61 - accommodating cavity, 62 - sealing valve, 63 - cavity, 64 - sealing plug, 65 - driving rod, 66 - end cap, 67 - connecting rod, 68 - convex ring, 69 - annular groove, 71 - flange. Detailed Embodiments

[0027] In the following text, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the embodiments of the present invention.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0030] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0031] See Figure 1 , this embodiment provides a lithium salt sampling container, including a sampling container main body 6. The sampling container main body 6 has an openable and closable accommodation cavity 61 for accommodating samples. The volume of the accommodation cavity 61 is adjustable.

[0032] A sealing valve 62 is provided on the sampling container main body 6, and the sealing valve is used to control the opening and closing of the accommodation cavity 61. The sealing valve can be a manual valve or a solenoid valve. The sampling container main body 6 is connected to the container for storing lithium salt through a flange 71.

[0033] Specifically, the sampling container main body 6 has a cavity 63. A sealing plug 64 is slidably and sealingly fitted in the cavity 63. The cavity 63, the sealing plug 64 and the sealing valve jointly define a space to form the accommodation cavity 61. The volume of the accommodation cavity 61 can be adjusted by moving the sealing plug 64 up and down.

[0034] In use, first push the sealing plug 64 upward to the upper limit position to minimize the volume of the accommodating cavity 61. Then connect the sampling container body 6 to the container for storing lithium salts through the flange 71. After opening the corresponding valve, move the sealing plug 64 downward to expand the volume of the accommodating cavity 61, and the lithium salts can enter the accommodating cavity 61. After reaching the sampling amount, close the corresponding valve and disassemble the lithium salt sampling container to complete the sampling operation. During the above process, after opening the corresponding valve, by expanding the volume of the accommodating cavity 61, the lithium salts in the container for storing lithium salts can be sucked into the accommodating cavity 61, and the protective gas (nitrogen) in the container for storing lithium salts can also be sucked into the accommodating cavity 61, so as to form a nitrogen atmosphere in the accommodating cavity 61, without the need to perform a replacement operation on the accommodating cavity 61 during sampling as in the prior art, and the operation is more convenient.

[0035] To facilitate controlling the sampling amount, the side wall of the accommodating cavity 61 is provided with a transparent or semi-transparent observation window (not shown in the figure), and a scale is provided on the observation window (not shown in the figure).

[0036] In this embodiment, the lower end of the cavity 63 is open, and the sealing plug 64 is connected with a driving rod 65, and the driving rod 65 is located outside the cavity 63. The setting of the driving rod 65 facilitates moving the sealing plug 64.

[0037] Further, the open end at the lower end of the cavity 63 is detachably connected with an end cover 66 through a screw, and the driving rod 65 movably penetrates through the end cover 66. The setting of the end cover 66 can, on the one hand, prevent dust from entering the cavity 63, and on the other hand, play a guiding role for the movement of the driving rod 65.

[0038] Further, the driving rod 65 is threadedly connected with the end cover 66, the driving rod 65 is rotatably connected with a connecting rod 67, and the connecting rod 67 is connected with the sealing plug 64. By rotating the driving rod 65, the sealing plug 64 can be moved up and down. The driving rod 65 is connected with the sealing plug 64 through the connecting rod 67, and the driving rod 65 can rotate relative to the connecting rod 67, so that the sealing plug 64 only needs to move up and down without rotating, and the wear is small.

[0039] In this embodiment, the driving rod 65 and the connecting rod 67 are rotatably connected in the following manner: one end of the driving rod 65 has a convex ring 68, one end of the connecting rod 67 has an annular groove 69 matching the convex ring 68, and the convex ring 68 is rotatably fitted in the annular groove 69.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lithium salt sampling container, characterized in that, Comprising: Sampling container body; An openable and closable accommodating cavity located within the sampling container body; A sealing valve for controlling the opening and closing of the accommodating cavity; Wherein, a cavity is provided within the sampling container body, and a sealing plug is slidably and sealingly fitted within the cavity. The cavity, the sealing plug, and the sealing valve jointly define a space to form the accommodating cavity.

2. The lithium salt sampling container according to claim 1, characterized in that, The lower end of the cavity is open.

3. The lithium salt sampling container according to claim 2, wherein The sealing plug is connected to a driving rod, and the driving rod is located outside the cavity.

4. The lithium salt sampling container according to claim 3, characterized in that, A end cap is detachably connected to the open lower end of the cavity, and the driving rod movably penetrates through the end cap.

5. The lithium salt sampling container according to claim 4, wherein, The open lower end of the cavity is connected to the end cap by screws.

6. The lithium salt sampling container according to claim 4, wherein, The driving rod is threadedly connected to the end cap, the driving rod is rotatably connected to a connecting rod, and the connecting rod is connected to the sealing plug.

7. The lithium salt sampling container according to claim 6, characterized in that, One end of the driving rod has a convex ring, and one end of the connecting rod has an annular groove matching the convex ring.

8. The lithium salt sampling container according to claim 1, wherein, The sampling container body is provided with a flange.

9. The lithium salt sampling container according to any one of claims 1 to 8, characterized in that An observation window is provided on the side wall of the accommodating cavity.

10. The lithium salt sampling container according to claim 9, characterized in that, A scale is provided on the observation window.

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