Lithium hexafluorophosphate detection operation cabinet

Abstract

The invention belongs to the field of detection technology, in particular to a lithium hexafluorophosphate detection operating cabinet, comprising a workbench, in which a controller is installed; a Raman spectrometer is installed above the workbench through a support plate, and a detection head of the Raman spectrometer is arranged downward; evenly arranged electric telescopic rods are fixedly connected to the workbench; a placement plate is fixedly connected to the extended end of the electric telescopic rod; an operation cabinet is installed on the placement plate through bolts, and a sample is placed in the operation cabinet; the invention is mainly used to solve the problem that when lithium hexafluorophosphate is detected, if a cover glass is not well sealed, the lithium hexafluorophosphate will undergo a hydrolysis reaction, thereby affecting the detection process of the lithium hexafluorophosphate.

Description

Technical Field

[0001] The invention belongs to the field of detection technology, in particular to a lithium hexafluorophosphate detection operating cabinet. Background Art

[0002] Lithium-ion batteries are internationally recognized as ideal chemical energy sources today. They are small in size and large in capacity. After 500 times of repeated charge and discharge, the capacity only decreases by 3%. They are widely used in electronic products such as mobile phones, laptops and camcorders, and in the electric vehicle industry. With the increasing demand for consumer and mobile electronic products such as mobile phones, digital cameras, laptops and camcorders, especially the broad prospects for the development of electric vehicles in the future, lithium-ion batteries have huge application potential.

[0003] Lithium hexafluorophosphate is the most widely used electrolyte lithium salt for lithium-ion secondary batteries. The rapid growth of lithium-ion battery market demand has opened up a huge market space for lithium hexafluorophosphate. The synthesis methods of lithium hexafluorophosphate include gas-solid method, solvent method and ion exchange method. Due to its advantages of high product purity and moderate cost, it is the only industrialized preparation method at present. However, the raw materials anhydrous HF and PF are highly corrosive and toxic, and have high requirements on equipment materials, personnel safety protection and production control level.

[0004] However, when lithium hexafluorophosphate comes into contact with air, it will undergo a hydrolysis reaction with the moisture in the air to generate gases such as hydrofluoric acid and phosphorus pentafluoride. Therefore, after the sample is processed and prepared in a vacuum glove box, the lithium hexafluorophosphate needs to be sealed with a cover glass, and the cover glass needs to be taken out of the vacuum glove box before detection using a Raman spectrometer.

[0005] When lithium hexafluorophosphate is tested, if the cover glass is not sealed well, the lithium hexafluorophosphate will undergo hydrolysis reaction, thus affecting the detection process of lithium hexafluorophosphate.

[0006] In view of this, the present invention solves the above technical problems by proposing a lithium hexafluorophosphate detection operation cabinet. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a lithium hexafluorophosphate detection operation cabinet.

[0008] The technical solution adopted by the present invention to solve the technical problem is: the lithium hexafluorophosphate detection operation cabinet described in the present invention comprises a workbench, and a controller is installed in the workbench; a Raman spectrometer is installed above the workbench through a support plate, and the detection head of the Raman spectrometer is arranged downward;

[0009] The workbench is fixedly connected with evenly arranged electric telescopic rods; the extended ends of the electric telescopic rods are fixedly connected with a placement plate; an operation cabinet is installed on the placement plate by bolts, and a sample is placed in the operation cabinet; the front side of the operation cabinet is transparent; the operation cabinet includes:

[0010] A cabinet door, the operating cabinet is provided with a transparent cabinet door;

[0011] A cabinet cover is installed on the top of the operating cabinet, and a through slot is provided on the cabinet cover;

[0012] Rectangular bins, the left and right end surfaces of the operating cabinet are fixedly connected with rectangular bins; circular grooves are opened in the inner walls of the two rectangular bins; butyl rubber gloves are fixedly connected in the circular grooves, and the butyl rubber gloves are placed in the rectangular bins in the initial state;

[0013] A rectangular groove, wherein a rectangular groove is provided in the inner wall of the operation cabinet on one side opposite to the two rectangular bins;

[0014] Inlet pipe: Inlet pipes are installed on the upper and lower sides of the rectangular bin on the left side and are located in the inner wall of the operating cabinet, and the air intake pipes extend to one side of the operating cabinet and are flush with the inner surface of the operating cabinet;

[0015] The air outlet pipe is installed on the upper and lower sides of the rectangular bin on the right side and is located in the inner wall of the operating cabinet, and the air outlet pipe extends to one side of the operating cabinet and is flush with the inner surface of the operating cabinet; the air inlet pipe is used to introduce inert gas into the operating cabinet, and the air outlet pipe is used to discharge the inert gas in the operating cabinet;

[0016] A partition is slidably connected to the operating cabinet via a spring, and the partition is in contact with the inner surface of the operating cabinet; in the initial state, the partition is located above the air inlet pipe and the air outlet pipe above the rectangular bin; a handle is fixedly connected to the lower surface of the partition;

[0017] The upper surface of the partition is provided with a sealing column, and the sealing column is initially inserted into the through groove and seals the through groove; the sealing column part extends to the top of the operating cabinet;

[0018] The sealing column comprises a column and a silicone column; the silicone column is designed to wrap the column;

[0019] The surfaces of both sides of the sealing column are fixedly connected with sliding rods; the upper surfaces of the partitions on both sides of the sealing column are provided with sliding grooves, and the side of the sliding rod away from the sealing column extends into the sliding groove and is slidably connected to the sliding groove;

[0020] A placement groove is provided on the upper surface of the partition below the sealing column.

[0021] Preferably, both side end surfaces of the partition close to the air inlet pipe and the air outlet pipe are fixedly connected with sealing blocks; both side end surfaces of the left and right sides in the operating cabinet are fixedly connected with sealing layers, and the sealing layers are provided with rectangular openings and circular openings; the rectangular openings correspond to the rectangular grooves; the circular openings correspond to the air inlet pipe and the air outlet pipe;

[0022] The sealing block is made of silicone material; the sealing block is cylindrical and rotates on the partition;

[0023] The sealing layer is made of silica gel material; a cavity is provided in the sealing layer, and the cavity is filled with water.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The lithium hexafluorophosphate detection operating cabinet of the present invention extends the detection head into the operating cabinet, exhausts the air in the operating cabinet, and then detects the lithium hexafluorophosphate. This can prevent the lithium hexafluorophosphate from undergoing hydrolysis reaction when the cover glass is not well sealed, thereby affecting the detection process of the lithium hexafluorophosphate. At the same time, when the detection head is partially extended into the operating cabinet, the circulating inert gas can exhaust part of the air that enters, thereby reducing the amount of air and preventing the presence of air from affecting the detection of the lithium hexafluorophosphate.

[0026] 2. In the lithium hexafluorophosphate detection operation cabinet described in the present invention, since the sealing column includes a vertical column and a silicone column and the silicone column wraps the vertical column, when the detection head contacts the sealing column, the detection head will first contact the silicone column. When the silicone column contacts the detection head, the silicone column will gradually fit with the detection head, thereby squeezing the gas between the detection head and the silicone column, reducing the gas content between the silicone column and the detection head, and preventing the gas from being brought into the operation cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a stereogram of the present invention as a whole;

[0029] Figure 2 It is a three-dimensional diagram of the operating cabinet of the present invention;

[0030] Figure 3 is a cross-sectional view of the present invention as a whole;

[0031] Figure 4 is a cross-sectional view of the operating cabinet of the present invention;

[0032] Figure 5 The present invention Figure 4 A partial enlarged view of the middle part;

[0033] Figure 6Schematic diagram of the sealing layer in the present invention.

[0034] In the figure:

[0035] 1. Workbench; 11. Raman spectrometer; 12. Detection head; 13. Electric telescopic rod; 14. Placement plate; 2. Operation cabinet; 21. Cabinet door; 22. Cabinet cover; 23. Through slot; 24. Inlet pipe; 25. Outlet pipe; 3. Rectangular bin; 31. Rectangular slot; 32. Round slot; 33. Butyl rubber gloves; 4. Partition; 41. Sealing column; 42. Vertical column; 43. Silicone column; 44. Sliding rod; 45. Sliding slot; 46. Placement slot; 47. Sealing block; 5. Sealing layer; 51. Rectangular opening; 52. Round opening. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] like Figures 1 to 6 As shown, a lithium hexafluorophosphate detection operating cabinet according to the present invention;

[0038] Embodiment 1

[0039] It comprises a workbench 1, and a controller is installed in the workbench 1; a Raman spectrometer 11 is installed above the workbench 1 through a support plate, and a detection head 12 of the Raman spectrometer 11 is arranged downward;

[0040] The workbench 1 is fixedly connected with evenly arranged electric telescopic rods 13; the extended end of the electric telescopic rod 13 is fixedly connected with a placement plate 14; an operation cabinet 2 is installed on the placement plate 14 by bolts, and a sample is placed in the operation cabinet 2; the front side of the operation cabinet 2 is transparent; the operation cabinet 2 includes:

[0041] A cabinet door 21, the operating cabinet 2 is provided with a cabinet door 21, and the cabinet door 21 is transparent;

[0042] A cabinet cover 22 is installed on the top of the operating cabinet 2, and a through slot 23 is opened on the cabinet cover 22;

[0043] Rectangular bins 3, the left and right end surfaces of the operating cabinet 2 are fixedly connected with rectangular bins 3; circular grooves 32 are opened in the inner walls of the two rectangular bins 3; butyl rubber gloves 33 are fixedly connected in the circular grooves 32, and the butyl rubber gloves 33 are placed in the rectangular bins 3 in the initial state;

[0044] A rectangular groove 31 is provided in the inner wall of the operation cabinet 2 on one side opposite to the two rectangular bins 3;

[0045] Inlet pipe 24, the upper and lower sides of the rectangular bin 3 on the left side are both installed with an air intake pipe 24 located in the inner wall of the operating cabinet 2, and the air intake pipe 24 extends to one side of the operating cabinet 2 and is flush with the inner surface of the operating cabinet 2;

[0046] The air outlet pipe 25 is installed on the upper and lower sides of the rectangular bin 3 on the right side and is located in the inner wall of the operating cabinet 2, and the air outlet pipe 25 extends to one side of the operating cabinet 2 and is flush with the inner surface of the operating cabinet 2; the air inlet pipe 24 is used to introduce inert gas into the operating cabinet 2, and the air outlet pipe 25 is used to guide the inert gas in the operating cabinet 2 out;

[0047] The partition 4 is connected to the operating cabinet 2 by a spring sliding connection, and the partition 4 is in contact with the inner surface of the operating cabinet 2; the partition 4 is initially located above the air inlet pipe 24 and the air outlet pipe 25 above the rectangular bin 3; a handle is fixedly connected to the lower surface of the partition 4;

[0048] The upper surface of the partition plate 4 is provided with a sealing column 41, and the sealing column 41 is initially inserted into the through groove 23 and seals the through groove 23; the sealing column 41 partially extends to the top of the operating cabinet 2;

[0049] The sealing column 41 includes a column 42 and a silicone column 43; the silicone column 43 is designed to wrap the column 42;

[0050] Slide rods 44 are fixedly connected to both sides of the sealing column 41; both sides of the sealing column 41 are provided with slide grooves 45 on the upper surface of the partition 4, and the side of the slide rod 44 away from the sealing column 41 extends into the slide groove 45 and is slidably connected to the slide groove 45;

[0051] A placement groove 46 is provided on the upper surface of the partition plate 4 below the sealing column 41 .

[0052] When lithium hexafluorophosphate needs to be tested, the staff first introduces inert gas into the air inlet pipe 24. When the inert gas fills the operating cabinet 2, it will flow out from the air outlet pipe 25. In this project, the air in the operating cabinet 2 can be discharged. Then the staff puts both hands into the circular grooves 32 in the rectangular bins 3 on both sides. When the hands of the staff are put in, they will be put into the butyl rubber gloves 33. Then the staff can put their hands through the rectangular grooves 31 into the operating cabinet 2, and grind and mix the lithium hexafluorophosphate sample in the operating cabinet 2. Since there is only inert gas in the operating cabinet 2, the lithium hexafluorophosphate sample will not undergo hydrolysis reaction. When the sample is prepared, the sample is put into a container and placed at the bottom of the operating box. Then the staff extends his hand from the operating cabinet 2;

[0053] Then the staff controls the electric telescopic rod 13 to extend. During the extension of the electric telescopic rod 13, the operating cabinet 2 can be driven to move upward by the placement plate 14. Since the sealing column 41 partially extends above the operating cabinet 2, the sealing column 41 can be driven to move upward when the operating cabinet 2 moves upward as a whole, and gradually approaches the detection head 12. When the sealing column 41 contacts the detection head 12, it will push the sealing column 41 to move downward. At the same time, the sealing column 41 will push the partition 4 to move downward and compress the spring under the partition 4. At the same time, the sealing column 41 will gradually move into the operating cabinet 2. When the detection head 1 After the detection head 12 penetrates the through groove 23, it will make the detection head 12 fit with the through groove 23, so that the detection head 12 seals the through groove 23. However, at this time, the detection head 12 partially extends into the operation cabinet 2, and the sealing column 41 completely extends into the operation cabinet 2. At this time, the electric telescopic rod 13 stops extending further, and the partition 4 moves to the bottom of the upper air inlet pipe 24 and the air outlet pipe 25. At this time, the gas introduced by the upper air inlet pipe 24 will flow through the upper part of the partition 4 and flow out from the air outlet pipe 25 above the partition 4. In this process, the air above the partition 4 can be taken out, thereby preventing the existence of air above the partition 4.

[0054] Then the staff member continues to put his hand into the butyl rubber glove 33, and then put his hand into the operating cabinet 2. Then the staff member first holds the handle on the lower surface of the partition 4 with one hand, and then pulls the handle downward. At the same time, the partition 4 will move downward. When the partition 4 moves to the middle position of the rectangular groove 31, the staff member's other hand penetrates into the operating cabinet 2 from the upper half of the rectangular groove 31. At this time, the staff member's other hand will reach above the partition 4, and then the staff member holds the sealing column 41 and pushes the sealing column 41 backward. At this time, the slide bar 44 moves backward in the slide groove 45. Then the staff member's hand that pushes the sealing column 41 is first retracted into the rectangular bin 3, and then extends from the lower half of the rectangular groove 31 into the space below the partition 4, and then Hold the container with the sample, and bring the container into the rectangular bin 3, then reach into the space above the partition 4 from the upper part of the rectangular groove 31 again, and place the container in the placement groove 46 opened on the upper surface of the partition 4, then retract the hand that places the container from above the partition 4, then gradually relax the hand holding the handle, so that the partition 4 gradually and slowly moves upward until the rectangular column fits with the lower surface of the cabinet cover 22, because the sealing column 41 is pushed back a distance, so that the sealing column 41 and the through groove 23 are staggered, so that the sealing column 41 can fit with the lower surface of the cabinet cover 22, so that there is a certain distance between the partition 4 and the cabinet cover 22, which is convenient for the detection of the detection head 12, and then the detection head 12 can be used to detect lithium hexafluorophosphate;

[0055] By extending the detection head 12 into the operation cabinet 2 and exhausting the air in the operation cabinet 2, and then detecting lithium hexafluorophosphate, it can be prevented that when the lithium hexafluorophosphate is detected, if the cover glass is not well sealed, the lithium hexafluorophosphate will be hydrolyzed, thereby affecting the detection process of lithium hexafluorophosphate. At the same time, when the detection head 12 is partially extended into the operation cabinet 2, the circulating inert gas can exhaust part of the air that enters, thereby reducing the amount of air and preventing the presence of air from affecting the detection of lithium hexafluorophosphate;

[0056] Since the sealing column 41 includes the column 42 and the silicone column 43 and the silicone column 43 is designed to wrap the column 42, when the detection head 12 contacts the sealing column 41, the detection head 12 will first contact the silicone column 43. When the silicone column 43 contacts the detection head 12, the silicone column 43 will gradually fit with the detection head 12, thereby squeezing the gas between the detection head 12 and the silicone column 43, reducing the gas content between the silicone column 43 and the detection head 12, and preventing the gas from being brought into the operating cabinet 2.

[0057] Embodiment 2

[0058] The end surfaces of both sides of the partition plate 4 close to the air inlet pipe 24 and the air outlet pipe 25 are fixedly connected with sealing blocks 47; the end surfaces of the left and right sides in the operating cabinet 2 are fixedly connected with sealing layers 5, and the sealing layers 5 are provided with rectangular openings 51 and round openings 52; the rectangular openings 51 correspond to the rectangular grooves 31; the round openings 52 correspond to the air inlet pipe 24 and the air outlet pipe 25;

[0059] The sealing block 47 is made of silicone material; the sealing block 47 is cylindrical and rotates on the partition 4;

[0060] The sealing layer 5 is made of silica gel material; a cavity is defined in the sealing layer 5 and the cavity is filled with water.

[0061] Since the sealing layer 5 is provided with a rectangular opening 51, it will not affect the staff's extension into the operating cabinet 2. Since the sealing layer 5 is provided with a circular opening 52, it will not affect the inflow and outflow of inert gas. When the partition 4 moves downward, due to the presence of the sealing block 47 and the sealing layer 5, the sealing degree between the partition 4 and the operating cabinet 2 can be improved to prevent excessive gas from flowing through the gap between the partition 4 and the operating cabinet 2. At the same time, since the sealing column 41 is cylindrical and rotates on both sides of the partition 4, the sealing block 47 will rotate during the downward movement of the partition 4, thereby reducing the friction between the sealing block 47 and the sealing layer 5. At the same time, since the sealing layer 5 is filled with water, the sealing layer 5 will be squeezed during the downward rotation of the sealing block 47, so that the sealing layer 5 and the sealing block 47 are better fitted, thereby further improving the sealing degree between the sealing block 47 and the sealing layer 5.

Claims

1. A lithium hexafluorophosphate detection operating cabinet, characterized in that: The device comprises a workbench (1), wherein a controller is installed in the workbench (1); a Raman spectrometer (11) is installed above the workbench (1) via a support plate, and a detection head (12) of the Raman spectrometer (11) is arranged downward; The workbench (1) is fixedly connected with evenly arranged electric telescopic rods (13); the extended ends of the electric telescopic rods (13) are fixedly connected with a placement plate (14); an operation cabinet (2) is mounted on the placement plate (14) by bolts, and a sample is placed in the operation cabinet (2); the front side of the operation cabinet (2) is transparent; the operation cabinet (2) comprises: A cabinet door (21), the operating cabinet (2) is provided with a cabinet door (21) which is transparent; A cabinet cover (22), wherein the top of the operating cabinet (2) is provided with a cabinet cover (22), and a through slot (23) is provided on the cabinet cover (22); A rectangular bin (3), the left and right end surfaces of the operating cabinet (2) are fixedly connected with the rectangular bin (3); a circular groove (32) is provided in the inner wall of the two rectangular bins (3); butyl rubber gloves (33) are fixedly connected in the circular grooves (32), and the butyl rubber gloves (33) are placed in the rectangular bin (3) in an initial state; A rectangular groove (31), wherein a rectangular groove (31) is provided in the inner wall of the operating cabinet (2) on one side opposite to the two rectangular bins (3); An air intake pipe (24), the upper and lower sides of the rectangular bin (3) on the left side are both provided with air intake pipes (24) in the inner wall of the operating cabinet (2), and the air intake pipe (24) extends to one side of the operating cabinet (2) and is flush with the inner surface of the operating cabinet (2); An air outlet pipe (25), the upper and lower sides of the rectangular bin (3) on the right side are both provided with air outlet pipes (25) in the inner wall of the operating cabinet (2), and the air outlet pipe (25) extends to one side of the operating cabinet (2) and is flush with the inner surface of the operating cabinet (2); the air inlet pipe (24) is used to introduce inert gas into the operating cabinet (2), and the air outlet pipe (25) is used to guide the inert gas in the operating cabinet (2) out; A partition (4) is slidably connected to the operating cabinet (2) via a spring, and the partition (4) is in contact with the inner surface of the operating cabinet (2); in an initial state, the partition (4) is located above the air inlet pipe (24) and the air outlet pipe (25) above the rectangular bin (3); a handle is fixedly connected to the lower surface of the partition (4); A sealing column (41) is provided on the upper surface of the partition (4), and the sealing column (41) is inserted into the through groove (23) in an initial state and seals the through groove (23); a portion of the sealing column (41) extends to the top of the operating cabinet (2); The sealing column (41) comprises a column (42) and a silicone column (43); the silicone column (43) is designed to wrap the column (42); The end surfaces of both sides of the partition plate (4) close to the air inlet pipe (24) and the air outlet pipe (25) are fixedly connected with sealing blocks (47); the left and right end surfaces in the operating cabinet (2) are fixedly connected with sealing layers (5), and the sealing layers (5) are provided with rectangular openings (51) and circular openings (52); the rectangular openings (51) correspond to the rectangular grooves (31); and the circular openings (52) correspond to the air inlet pipe (24) and the air outlet pipe (25).

2. A lithium hexafluorophosphate detection operation cabinet according to claim 1, characterized in that: Slide rods (44) are fixedly connected to the surfaces of both sides of the sealing column (41); slide grooves (45) are provided on the upper surface of the partition (4) on both sides of the sealing column (41), and the side of the slide rod (44) away from the sealing column (41) extends into the slide groove (45) and is slidably connected to the slide groove (45).

3. A lithium hexafluorophosphate detection operation cabinet according to claim 2, characterized in that: A placement groove (46) is provided on the upper surface of the partition (4) below the sealing column (41).

4. A lithium hexafluorophosphate detection operation cabinet according to claim 1, characterized in that: The sealing block (47) is made of a silicone material; the sealing block (47) is cylindrical and rotates on the partition (4).

5. A lithium hexafluorophosphate detection operation cabinet according to claim 1, characterized in that: The sealing layer (5) is made of a silica gel material; a cavity is provided in the sealing layer (5), and the cavity is filled with water.

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