Lithium battery positive electrode powder storage device

Abstract

The utility model discloses a lithium battery positive electrode powder storage device, and belongs to the field of powder storage devices. The device comprises a storage tank, a top cover, a one-way valve and a pressure release valve. When the lithium battery positive electrode powder storage device needs to be adopted for storing and transporting lithium battery positive electrode powder, firstly, the top cover is opened, the lithium battery positive electrode powder is guided into the storage tank through the feeding opening, and then the top cover is connected with the feeding opening in a sealed mode; and then, a nitrogen pipe is connected to the one-way valve, the pressure release valve is opened at the same time, nitrogen is introduced into the storage tank from the nitrogen pipe through external nitrogen equipment, air in the storage tank is discharged from the pressure release valve through the introduced nitrogen, a certain amount of nitrogen is stored in the storage tank, and then the pressure release valve is closed. Therefore, the storage tank with better air tightness can more effectively prevent the positive electrode powder of the lithium battery from being in contact with air, and the quality guarantee period is prolonged. In addition, the storage tank is made of stainless steel, is more durable than a ton bag and is not prone to damage, waste of packing materials can be reduced, and storage and transportation cost is saved.

Description

Technical Field

[0001] The present application relates to the field of powder storage devices, and in particular to a lithium battery positive electrode powder storage device. Background Art

[0002] Because lithium battery cathode powder is exposed to moisture and oxidation over time, ton bags must be sealed with a vacuum sealer. This seal is susceptible to sticking to the powder, resulting in a weak seal. This shortens the lifespan of the ton bags, which typically must be scrapped after six months. Furthermore, during loading, unloading, and transportation, there is a risk of damage to the bag skin and sling breakage.

[0003] Therefore, there is an urgent need for a device that can effectively store lithium battery positive electrode powder. Utility Model Content

[0004] The present invention provides a lithium battery positive electrode powder storage device. This device can solve the problem of effectively storing lithium battery positive electrode powder in the prior art. The technical solution is as follows:

[0005] In one aspect, a lithium battery positive electrode powder storage device is provided, the lithium battery positive electrode powder storage device comprising:

[0006] Storage tanks, covers, check valves and pressure relief valves;

[0007] The storage tank has a feed port and a discharge port connected to each other, and is used to store positive electrode powder of lithium batteries. The storage tank is a tank body made of stainless steel;

[0008] The top cover is arranged at the feed inlet and is movably connected to the storage tank;

[0009] The one-way valve is installed on the top cover, the outlet of the one-way valve is communicated with the storage tank, and the inlet of the one-way valve is used to connect to the nitrogen pipe;

[0010] The pressure relief valve is installed on the top cover, and the inlet of the pressure relief valve is communicated with the storage tank.

[0011] Optionally, the storage tank includes: a first tank body, a second tank body and a third tank body arranged in sequence along a direction away from the top cover, the inner side wall of the first tank body is a circular arc surface; the inner diameter of the second tank body gradually decreases along a direction away from the first tank body and approaching the third tank body; the inner side wall of the third tank body is a circular arc surface.

[0012] Optionally, the inner side wall of the second tank body is an arc surface.

[0013] Optionally, the bottom of the storage tank further has a sewage outlet arranged opposite to the top cover; the lithium battery positive electrode powder storage device further includes: a straight-through valve installed at the sewage outlet.

[0014] Optionally, the side of the storage tank has a mounting through hole; the lithium battery positive electrode powder storage device further includes: a transparent plate installed at the mounting through hole.

[0015] Optionally, the outer wall of the storage tank has multiple groups of first connecting members distributed in a circular array; the lithium battery positive electrode powder storage device also includes: multiple brackets, the multiple brackets correspond one-to-one to the multiple groups of first connecting members, and each of the brackets is detachably connected to the corresponding group of first connecting members.

[0016] Optionally, each bracket has a traction hanger on a side facing away from the storage tank.

[0017] Optionally, the top of each bracket has a second connecting member, and the bottom of each bracket has a third connecting member;

[0018] Wherein, when a plurality of the lithium battery positive electrode powder storage devices are stacked, the second connecting member in one of every two adjacent lithium battery positive electrode powder storage devices is fastened to the third connecting member in the other lithium battery positive electrode powder storage device.

[0019] Optionally, the bottoms of some of the multiple brackets have universal wheels, and the bottoms of another part of the brackets have universal wheels with brake components.

[0020] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0021] A storage device for lithium battery positive electrode powder may include: a storage tank, a top cover, a one-way valve, and a pressure relief valve. When a lithium battery positive electrode powder storage device is needed to store and transport lithium battery positive electrode powder, first, open the top cover and introduce the lithium battery positive electrode powder into the storage tank through the feed port, and then seal the top cover with the feed port; then, connect the nitrogen pipe to the one-way valve, and at the same time open the pressure relief valve, and introduce nitrogen into the storage tank through the nitrogen pipe through an external nitrogen device. The air in the storage tank is discharged through the pressure relief valve by the filled nitrogen, and a certain amount of nitrogen is retained in the storage tank, and then the pressure relief valve is closed. In this way, a storage tank with better airtightness can more effectively prevent the lithium battery positive electrode powder from coming into contact with the air, thereby extending the shelf life. In addition, the storage tank is made of stainless steel, which is more durable than ton bags and not easily damaged, which can reduce packaging material waste and save storage and transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a schematic structural diagram of a lithium battery positive electrode powder storage device provided in an embodiment of the present application;

[0024] Figure 2 This is a schematic structural diagram of another lithium battery positive electrode powder storage device provided in an embodiment of the present application;

[0025] Figure 3 yes Figure 2 A front view of a lithium battery positive electrode powder storage device is shown;

[0026] Figure 4 yes Figure 2 A side view of a lithium battery positive electrode powder storage device is shown;

[0027] Figure 5 This is a schematic structural diagram of a bracket provided in an embodiment of the present application;

[0028] Figure 6 This is a schematic diagram of the connection of two lithium battery positive electrode powder storage devices provided in an embodiment of the present application.

[0029] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] Please refer to Figure 1 , Figure 1 Schematic diagram of a lithium battery positive electrode powder storage device provided in an embodiment of the present application. The lithium battery positive electrode powder storage device may include: a storage tank 1, a top cover 2, a one-way valve 3 and a pressure relief valve 4.

[0034] The storage tank 1 in the lithium battery positive electrode powder storage device may have a connected feed port 10 and a discharge port 11. The storage tank 1 may be used to store lithium battery positive electrode powder, and the storage tank 1 may be a tank body made of stainless steel. For example, the discharge port 11 of the storage tank 1 may be set on the side of the bottom of the storage tank 1, so that the operator can connect the vacuum suction equipment at the discharge port 11 to transfer the lithium battery positive electrode powder in the storage tank 1 out of the storage tank 1 for use. It should be noted that during the transportation of the lithium battery positive electrode powder stored in the storage tank 1, the discharge port 11 of the storage tank 1 is in a closed state. Here, the material of the storage tank 1 may be 304 stainless steel.

[0035] The top cover 2 in the lithium battery positive electrode powder storage device can be covered at the feed port 10 of the storage tank 1 and can be movably connected to the storage tank 1.

[0036] The one-way valve 3 in the lithium battery positive electrode powder storage device can be installed on the top cover 2, the outlet of the one-way valve 3 can be connected to the storage tank 1, and the inlet of the one-way valve 3 can be used to connect the nitrogen pipe.

[0037] The pressure relief valve 4 in the lithium battery positive electrode powder storage device can be installed on the top cover 2, and the inlet of the pressure relief valve 4 can be connected to the storage tank 1.

[0038] In the example, when the lithium battery positive pole powder storage device is needed to store and transport the lithium battery positive pole powder, first, the top cover 2 is opened, the lithium battery positive pole powder is introduced into the storage tank 1 through the feeding port 10, and then the top cover 2 is sealingly connected with the feeding port 10. Then, the nitrogen pipe is connected to the one-way valve 3, and the pressure relief valve 4 is opened at the same time. Nitrogen is introduced into the storage tank 1 through the nitrogen pipe by the external nitrogen equipment, the air in the storage tank 1 is discharged through the pressure relief valve 4 by the introduced nitrogen, and a certain amount of nitrogen is stored in the storage tank 1, and then the pressure relief valve 4 is closed. In this way, the storage tank 1 with good air tightness can more effectively prevent the lithium battery positive pole powder from contacting with the air, and prolong the shelf life. In addition, the storage tank 1 is made of stainless steel material, which is more durable than a ton bag, and is not easy to be damaged, can reduce the waste of packaging materials, and save the storage and transportation cost.

[0039] In summary, the embodiment of the present application provides a lithium battery positive pole powder storage device, which can include a storage tank, a top cover, a one-way valve and a pressure relief valve. When the lithium battery positive pole powder storage device is needed to store and transport the lithium battery positive pole powder, first, the top cover is opened, the lithium battery positive pole powder is introduced into the storage tank through the feeding port, and then the top cover is sealingly connected with the feeding port. Then, the nitrogen pipe is connected to the one-way valve, and the pressure relief valve is opened at the same time. Nitrogen is introduced into the storage tank through the nitrogen pipe by the external nitrogen equipment, the air in the storage tank is discharged through the pressure relief valve by the introduced nitrogen, and a certain amount of nitrogen is stored in the storage tank, and then the pressure relief valve is closed. In this way, the storage tank with good air tightness can more effectively prevent the lithium battery positive pole powder from contacting with the air, and prolong the shelf life. In addition, the storage tank is made of stainless steel material, which is more durable than a ton bag, and is not easy to be damaged, can reduce the waste of packaging materials, and save the storage and transportation cost.

[0040] Optionally, please refer to Figure 2 、 Figure 3 and Figure 4 , Figure 2 is another structure schematic view of the lithium battery positive pole powder storage device provided by the embodiment of the present application, Figure 3 is Figure 2 the front view of the lithium battery positive pole powder storage device, Figure 4 is Figure 2A side view of a lithium battery positive electrode powder storage device is shown. The storage tank 1 in the lithium battery positive electrode powder storage device may include: a first tank body 12, a second tank body 13, and a third tank body 14, arranged in sequence in a direction away from the top cover 2. The inner sidewall of the first tank body 12 may be a circular arc surface. The inner diameter of the second tank body 13 may gradually decrease in a direction away from the first tank body 12 and toward the third tank body 14. The inner sidewall of the third tank body 14 may also be a circular arc surface. In this case, by setting the inner sidewalls of the first tank body 12 and the third tank body 14 as circular arc surfaces, and the inner diameter of the second tank body 13 gradually decreases in a direction away from the first tank body 12 and toward the third tank body 14, it can be ensured that the lithium battery positive electrode powder flows smoothly to the bottom of the storage tank 1 and is discharged from the discharge port 11. It should be noted that the first tank body 12, the second tank body 13, and the third tank body 14 are interconnected.

[0041] For example, the inner side wall of the second tank body 13 can be an arc surface, the shape of the second tank body 13 can be an inverted truncated cone, and the first tank body 12 and the third tank body 14 can be hemispherical. It should be noted that the embodiment of the present application does not specifically limit the shape of the storage tank 1.

[0042] In the embodiments of this application, Figure 3 and Figure 4 As shown, the bottom of the storage tank 1 may also have a drain port 15 arranged opposite to the top cover 2, and the lithium battery positive electrode powder storage device may further include: a straight-through valve 5 installed at the drain port 15. In this way, by providing the drain port 15 at the bottom of the storage tank 1 and the straight-through valve 5 installed at the drain port 15, when the interior of the storage tank 1 is cleaned, the cleaning liquid can be introduced into the storage tank 1 from the feed port 10, and the waste liquid generated after cleaning can be discharged from the drain port 15. It should be noted that when the drain port 15 is used, the straight-through valve 5 can be switched to the open state, and when transporting and storing the lithium battery positive electrode powder, the straight-through valve 5 is in the closed state and the drain port 15 is closed.

[0043] Optional, such as Figure 2 and Figure 3 As shown, the side of the storage tank 1 may have a mounting hole 16, and the lithium battery positive electrode powder storage device may further include: a transparent plate 6 installed at the mounting hole 16. In this case, by providing the transparent plate 6 on the side of the storage tank 1, the transparent plate 6 can form a transparent window, through which the height of the powder accumulation in the storage tank 1 can be confirmed.

[0044] In the examples of this application, please refer to Figure 2 、 Figure 4 and Figure 5 , Figure 5is a structural schematic diagram of a support provided by an embodiment of the present application. The outer side wall of the storage tank 1 can have a plurality of groups of first connecting members 17 arranged in a ring array. The lithium battery positive electrode powder storage device can further include a plurality of supports 7, which can correspond to the plurality of groups of first connecting members 17 one-to-one, and each support 7 can be detachably connected to a corresponding group of first connecting members 17. In this case, by providing a plurality of supports 7 connected to the storage tank 1 in the lithium battery positive electrode powder storage device, the storage tank 1 can be supported after the plurality of supports 7 are connected to the storage tank 1 by two connecting members. The support 7 can be lifted to achieve transportation of the storage tank 1. For example, the first connecting member 17 can include a first connecting bracket and a plurality of first connecting holes (not shown in the figure) provided on the first connecting bracket. The support 7 can have a second connecting hole 7a in communication with the first connecting hole, and a connecting fastener that can pass through the first connecting hole and the second connecting hole 7a to connect the support 7 to the storage tank 1.

[0045] In the present application, as shown in Figure 2 and Figure 4 , the side of each support 7 away from the storage tank 1 can have a traction hanger 71. In this way, a lifting device can be used to connect the traction hanger 71 to lift the lithium battery positive electrode powder storage device for transportation. For example, the traction hanger 71 can be a lifting ring.

[0046] Optionally, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 , Figure 6 is a schematic diagram of two lithium battery positive electrode powder storage devices connected according to an embodiment of the present application. The top of each support 7 can have a second connecting member 72, and the bottom of each support 7 can have a third connecting member 73. In the case of stacking a plurality of lithium battery positive electrode powder storage devices, the second connecting member 72 on the support 7 in one of the two adjacent lithium battery positive electrode powder storage devices is fastened to the third connecting member 73 on the support 7 in the other lithium battery positive electrode powder storage device. For example, one of the second connecting member 72 and the third connecting member 73 can be a connecting column, and the other of the second connecting member 72 and the third connecting member 73 can be a connecting through hole, and the connecting column can be connected to the connecting through hole.

[0047] It should be noted that the top of the support 7 can be the end of the support 7 close to the top cover 2, and the bottom of the support 7 can be the end of the support 7 close to the bottom of the storage tank 1.

[0048] In the embodiments of the present application, as shown in Figure 2 and Figure 3As shown, the bottom of some of the multiple brackets 7 may have universal wheels 74, and the bottom of another part of the brackets 7 may have universal wheels 75 with brake components. In this way, by providing universal wheels 74 at the bottom of the brackets 7, the lithium battery positive electrode powder storage device can be easily moved, and the universal wheels 74 with brake components can be easily controlled to stop the rotation of the universal wheels 74.

[0049] In summary, the embodiment of the present application provides a lithium battery positive electrode powder storage device, which may include: a storage tank, a top cover, a one-way valve and a pressure relief valve. When a lithium battery positive electrode powder storage device is needed to store and transport lithium battery positive electrode powder, first, open the top cover and introduce the lithium battery positive electrode powder into the storage tank through the feed port, and then seal the top cover with the feed port; then, connect the nitrogen pipe to the one-way valve, and at the same time open the pressure relief valve, and introduce nitrogen into the storage tank through the nitrogen pipe through an external nitrogen device. The air in the storage tank is discharged through the pressure relief valve by the filled nitrogen, and a certain amount of nitrogen is preserved in the storage tank, and then the pressure relief valve is closed. In this way, a storage tank with better airtightness can more effectively prevent the lithium battery positive electrode powder from coming into contact with the air, thereby extending the shelf life. In addition, the storage tank is made of stainless steel, which is more durable than ton bags and not easily damaged, which can reduce packaging material waste and save storage and transportation costs.

[0050] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0051] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A lithium battery positive electrode powder storage device, characterized in that: include: Storage tanks, covers, check valves and pressure relief valves; The storage tank has a feed port and a discharge port connected to each other, and is used to store positive electrode powder of lithium batteries. The storage tank is a tank body made of stainless steel; The top cover is arranged at the feed inlet and is movably connected to the storage tank; The one-way valve is installed on the top cover, the outlet of the one-way valve is communicated with the storage tank, and the inlet of the one-way valve is used to connect to the nitrogen pipe; The pressure relief valve is installed on the top cover, and the inlet of the pressure relief valve is communicated with the storage tank.

2. The lithium battery positive electrode powder storage device according to claim 1, characterized in that: The storage tank includes: a first tank body, a second tank body and a third tank body arranged in sequence along a direction away from the top cover, the inner side wall of the first tank body is an arc surface; the inner diameter of the second tank body gradually decreases along a direction away from the first tank body and approaching the third tank body; the inner side wall of the third tank body is an arc surface.

3. The lithium battery positive electrode powder storage device according to claim 2, characterized in that: The inner side wall of the second tank body is an arc surface.

4. The lithium battery positive electrode powder storage device according to claim 1, characterized in that: The bottom of the storage tank is also provided with a sewage outlet arranged opposite to the top cover; the lithium battery positive electrode powder storage device further comprises: a straight-through valve installed at the sewage outlet.

5. The lithium battery positive electrode powder storage device according to claim 1, characterized in that: The side of the storage tank is provided with a mounting through hole; the lithium battery positive electrode powder storage device further comprises: a transparent plate installed at the mounting through hole.

6. The lithium battery positive electrode powder storage device according to any one of claims 1 to 5, characterized in that: The outer side wall of the storage tank has multiple groups of first connecting pieces distributed in a circular array; The lithium battery positive electrode powder storage device further includes: a plurality of brackets, each of which corresponds to the plurality of groups of first connectors on a one-to-one basis, and each of the brackets is detachably connected to a corresponding group of first connectors.

7. The lithium battery positive electrode powder storage device according to claim 6, characterized in that: Each bracket has a traction hanging piece on a side facing away from the storage tank.

8. The lithium battery positive electrode powder storage device according to claim 6, characterized in that: The top of each bracket has a second connecting piece, and the bottom of each bracket has a third connecting piece; Wherein, when a plurality of the lithium battery positive electrode powder storage devices are stacked, the second connecting member in one of every two adjacent lithium battery positive electrode powder storage devices is fastened to the third connecting member in the other lithium battery positive electrode powder storage device.

9. The lithium battery positive electrode powder storage device according to claim 6, characterized in that: The bottoms of some of the multiple brackets are provided with universal wheels, and the bottoms of the other brackets are provided with universal wheels with brake components.

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