A light-shielding and moisture-proof composite bag for lithium battery positive electrode materials

Abstract

The present invention relates to the technical field of battery material packaging bags, specifically a light-shielding and moisture-proof composite bag for positive materials of lithium batteries, comprising an inner ton bag and an outer ton bag, the outer ton bag presenting a cubic cavity structure in an unfolded state, the top and bottom center positions of the outer ton bag respectively provided with an inlet and an outlet, the inner ton bag being arranged on the inner side of the cubic cavity structure of the outer ton bag, and inflating and deflating air into the buffer pump air space through an air charging and discharging valve, when the buffer pump air space is in an air-pumping state, the drying bag protrudes from the drying bag storage compartment in the air-pumping state and is exposed to the inner ton bag space, adjacent ton bags of the present invention are connected by an electrostatic derivation block, so that all stacked ton bags form a whole, and through this arrangement, the bags stacked in different areas can all be effectively anti-statically operated, and at the same time, the buffer pump air space has diverse functions, and the drying object is more precise, thereby ensuring safety and stability during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of battery material packaging bags, in particular to a light-shielding and moisture-proof composite bag for lithium battery positive electrode materials. Background Art

[0002] The prior art discloses a ton bag for lithium battery materials with the publication number "CN217478055U", which comprises a ton bag body and a first warp cloth. The ton bag body is covered with a plastic layer, a waterproof PET film layer and an aluminum foil composite film layer in sequence from the outside to the inside. The top and bottom of the ton bag body are respectively provided with an inlet and a discharge port. The first warp cloth is integrally wound along the bag body and the bottom of the ton bag body and forms an "n"-shaped hanging ring at the four corners of the top of the bag bottom body. An exhaust valve is provided at the top of the ton bag body, and the exhaust valve is integrated with the inner side of the cubic cavity. The device is arranged in a "well" shape at the bottom of the ton bag body through the first warp cloth, so that the bearing force of the bottom of the ton bag body is evenly distributed to the bag body, thereby increasing the overall bearing weight of the ton bag body; the ton bag body is provided with a plastic layer, a waterproof PET film layer and an aluminum foil composite film layer from the outside to the inside, which can achieve waterproof, moisture-proof and anti-static properties. An exhaust valve is provided on the top of the ton bag body to achieve a vacuum state. The plastic layer adopts PP granular polypropylene material, which can prevent cracking and puncture.

[0003] However, the ton bags used for the above-mentioned lithium battery materials still have obvious defects during use: the above-mentioned device structure is relatively simple, which meets the packaging requirements of the bag structure, but for the packaging of lithium battery materials, there are still functional deficiencies and cannot meet the buffering, anti-static, drying and other requirements of new energy battery materials during transportation. Summary of the Invention

[0004] The object of the present invention is to provide a light-shielding and moisture-proof composite bag of positive electrode materials for lithium batteries to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A light-shielding and moisture-proof composite bag for positive materials of lithium batteries, comprising an inner ton bag and an outer ton bag, wherein the outer ton bag presents a cubic cavity structure in the unfolded state, and a feed port and a discharge port are respectively provided at the top and bottom center positions of the outer ton bag, the inner ton bag is arranged on the inner side of the cubic cavity structure of the outer ton bag, and loading and unloading ports protruding from the feed port and the discharge port are formed on the upper and lower sides of the inner ton bag, the inner ton bag is a conductive sealed bag, a sealed lining film layer is provided on the inner side of the outer ton bag, an electrostatic lead-out block electrically connected to the inner ton bag is provided on the outer ton bag, and the inner ton bag and the outer ton bag are separated from each other on the side of the bag body to form a buffer Pumping air space, the side wall of the outer ton bag is provided with an inflation and deflation valve connected with the buffer pumping air space, and the buffer pumping air space is inflated and deflated through the inflation and deflation valve. When the buffer pumping air space is in the pumping air state, the outer ton bag is unfolded to form a cube structure, and a number of drying bags are also detachably installed on the inside of the inner ton bag. The outer ton bag is provided with drying bag storage cabins corresponding to the number of drying bags and one-to-one correspondence. The drying bags protrude from the drying bag storage cabin and are exposed in the inner ton bag space when the buffer pumping air space is in the pumping air state. The drying bags move into the drying bag storage cabin when the buffer pumping air space is in the exhaust state, thereby isolating them from the external environment.

[0007] Preferably, the materials used for the inner ton bag and the sealing lining film layer include but are not limited to one or more composites of polyethylene, polypropylene, and polyester materials, and the inner and outer sides of the inner ton bag are also composited with conductive aluminum foil.

[0008] Preferably, the outer ton bag further comprises a woven fabric layer arranged outside the sealing inner lining film layer, and the material used for the woven fabric layer includes but is not limited to a composite of one or more of linen, polyester, nylon and polyester fibers.

[0009] Preferably, the inner layer ton bag and the electrostatic derivation block provided on the outer layer ton bag are connected to form an electrostatic derivation junction.

[0010] Preferably, each surface of the outer ton bags is provided with an electrostatic lead-out block, and the electrostatic lead-out block includes a magnetic block and a conductive film layer wrapped on the outside. During the stacking process, the outer ton bags are magnetically adsorbed and connected to the electrostatic lead-out blocks provided on the adjacent outer ton bags through the electrostatic lead-out blocks provided on each surface.

[0011] Preferably, the buffer pump air space formed on each side of the inner ton bag and the outer ton bag forms several drying areas under the separation of the suture lines, and drying bags are provided at the apexes of the protrusions that expand and protrude in the inflated state. The drying bags are matched with the mounting blocks provided on the inner ton bag by snap-fitting. A traction spring is provided in the drying bag storage compartment on the side of the mounting block away from the drying bag. The traction spring pulls the drying bag to the side of the drying bag storage compartment for storage in the absence of external force. A rubber sealing cover is also installed on the drying bag, and the rubber sealing cover cooperates with the drying bag storage compartment to isolate the drying bag from the external environment.

[0012] Preferably, the rubber sealing cover and the outer edge of the drying bag storage compartment are both provided with magnetic matching blocks, and the two are magnetically connected by the magnetic matching blocks. The buffer pump air space promotes the separation of the inner ton bag and the outer ton bag in the pumping state, thereby pushing the rubber sealing cover and the drying bag storage compartment to separate.

[0013] Preferably, nylon slings are provided on all four sides above the outer ton bag.

[0014] Preferably, zipper-type sealing strips are provided on the inner sides of the loading and unloading ports on the upper and lower sides, and magic buckles are also provided on one side of the loading and unloading ports on the upper and lower sides, and the magic buckles cooperate with the magic strips provided on the upper and lower sides of the outer ton bag.

[0015] Preferably, the sides of the outer ton bag are provided with nylon-made cross-shaped reinforcement ribs.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses static electricity guide blocks to guide away static electricity accumulated in the inner ton bags, thereby ensuring the safety of the positive electrode materials of lithium batteries during transportation. In addition, adjacent ton bags are connected by static electricity guide blocks, so that all stacked ton bags form a whole. This configuration allows bags stacked in different areas to effectively perform anti-static operations.

[0018] 2. The present invention provides a buffer pumping space. The pumping gas serves as a rapid prototyping mechanism for the bag body, rapidly forming the cubic cavity structure through the expansion of the gas. It also provides a buffer and isolation for the battery materials loaded therein. Furthermore, the expansion and contraction of the buffer pumping space correspondingly allows the drying bag to be in contact with or isolated from the external environment. This ensures that after the battery materials are loaded, the drying bag keeps the internal transport materials dry, further ensuring safety during transportation.

[0019] 3. The telescopic setting of the drying bag in the present invention makes the drying operation more targeted, effectively preventing the drying bag from absorbing moisture in the air when not in use and affecting the drying of the battery materials loaded therein, further ensuring the drying requirements.

[0020] In the present invention, adjacent ton bags are connected by electrostatic decoupling blocks, so that all stacked ton bags form a whole. Through this arrangement, the bags stacked in different areas can effectively perform anti-static operations. At the same time, the functions of the buffer pump air space are diverse, and the drying objects are more precise, ensuring safety and stability during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection state of the static electricity decoupling block in the state of stacking ton bags of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the enlarged structure of region A of the present invention;

[0025] Figure 5 This is a diagram of the storage state of the drying bag of the present invention.

[0026] In the figure: 1 inner ton bag, 2 outer ton bag, 3 loading and unloading port, 4 sealed inner lining film layer, 5 static deflection block, 6 buffer pump air space, 7 charging and discharging valve, 8 drying bag, 9 drying bag storage compartment, 10 woven fabric layer, 11 static deflection knot, 12 suture line, 13 drying area, 14 mounting block, 15 traction spring, 16 rubber sealing cover, 17 magnetic matching block, 18 nylon sling, 19 zipper sealing strip, 20 magic buckle, 21 Velcro, 22 well-shaped reinforcement ribs. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0028] See also Figure 1-5 , the present invention provides a technical solution:

[0029] Example:

[0030] A light-shielding and moisture-proof composite bag for positive materials of lithium batteries, comprising an inner ton bag 1 and an outer ton bag 2. The outer ton bag 2 has a cubic cavity structure when unfolded, and a feed port and a discharge port are respectively provided at the top and bottom center positions of the outer ton bag 2. The inner ton bag 1 is arranged on the inner side of the cubic cavity structure of the outer ton bag 2, and loading and unloading ports 3 protruding from the feed port and the discharge port are formed on the upper and lower sides of the inner ton bag 1. The inner ton bag 1 is a conductive sealed bag, and a sealed inner lining film layer 4 is provided on the inner side of the outer ton bag 2. An electrostatic lead-out block 5 electrically connected to the inner ton bag 1 is provided on the outer ton bag 2. The inner ton bag 1 and the outer ton bag 2 are located on the side of the bag body and separated from each other to form a buffer pump air space. 6. The side wall of the outer ton bag 2 is provided with an air charging and discharging valve 7 which is connected to the buffer pumping air space 6. The air is charged and discharged into the buffer pumping air space 6 through the air charging and discharging valve 7. When the buffer pumping air space 6 is in the pumping state, the outer ton bag 2 is unfolded to form a cube structure. A number of drying bags 8 are also detachably installed on the inside of the inner ton bag 1. The outer ton bag 2 is provided with drying bag storage cabins 9 which are the same in number and correspond one to one with the drying bags 8. The drying bags 8 protrude from the drying bag storage cabin 9 and are exposed in the space of the inner ton bag 1 when the buffer pumping air space 6 is in the pumping state. The drying bags 8 move into the drying bag storage cabin 9 when the buffer pumping air space 6 is in the exhaust state, thereby isolating them from the external environment.

[0031] In this embodiment, the light-shielding and moisture-proof lithium battery positive material composite bag adopts a double-layer composite form of an inner ton bag 1 and an outer ton bag 2, wherein the outer ton bag 2 has a double-layer structural main body in the form of a sealed inner lining film layer 4 and a woven cloth layer 10. The materials selected for the inner ton bag 1 and the sealed inner lining film layer 4 include but are not limited to one or more composites of polyethylene, polypropylene, and polyester materials. Conductive aluminum foil is also composited on the inner and outer sides of the inner ton bag. The light-shielding and static electricity conduction effects inside the bag body are achieved through the setting of the conductive aluminum foil. The static electricity conduction blocks 5 provided on the inner ton bag 1 and the outer ton bag 2 are connected to form an static electricity conduction node 11. In order to improve the structural strength of the outer ton bag 2, the outer ton bag 2 also includes a woven cloth layer 10 provided on the outside of the sealed inner lining film layer 4. The material used for the woven cloth layer 10 includes but is not limited to a composite of one or more of linen, polyester cloth, nylon cloth and polyester fiber. The inner ton bag 1 and the outer ton bag 2 are located on the side of the bag body and are separated from each other to form a buffer pump air space 6. Refer to the attached manual Figure 3, air is supplied to the buffer pump air space 6 through the inflation and deflation valve 7 to make it expand. During the expansion process, the gas supports the inner and outer ton bags 1 and 2, so that the outer ton bag 2 forms a cubic cavity structure. Therefore, during the loading process, the loading personnel do not need to manually open the bag body. The bag body can be quickly formed by inflating the inflation and deflation valve 7. The bag body structure is maintained during the loading process, making the loading process simpler and more efficient. In addition, after the loading is completed, the buffer pump air space 6 can also provide a certain buffer space, so that the adjacent ton bags can play a certain buffering role during the bumpy transportation. At the same time, a drying bag 8 is also provided at the inner ton bag 1. The battery material stored inside is dried by the drying bag 8. The drying bag 8 protrudes from the drying bag storage cabin 9 in the pumping state of the buffer pump air space 6 and is exposed to the space of the inner ton bag 1. The drying bag 8 moves into the drying bag storage cabin 9 when the buffer pump air space 6 is exhausted, thereby isolating it from the external environment. The structure for realizing the above operation includes:

[0032] The buffer pump air space 6 formed on each side of the inner bulk bag 1 and the outer bulk bag 2 forms a plurality of drying areas 13 separated by the suture line 12. Drying bags 8 are provided at the apex of the protrusions that expand and protrude in the inflated state. The drying bags 8 are engaged with the mounting blocks 14 provided on the inner bulk bag 1 by snap-fitting. A traction spring 15 is provided in the drying bag storage compartment 9 on the side of the mounting block 14 away from the drying bag 8. The traction spring 15 pulls the drying bag 8 toward the drying bag storage compartment 9 for storage without external force. A rubber sealing cover 16 is also installed on the drying bag 8. The rubber sealing cover 16 cooperates with the drying bag storage compartment 9 to isolate the drying bag 8 from the external environment.

[0033] The drying bag 8 is isolated by the cooperation between the rubber sealing cover 16 and the drying bag storage compartment 9. The rubber sealing cover 16 is in a cooperative state with the drying bag storage compartment 9 under the traction of the traction spring 15 in the absence of external force. In addition, in order to ensure the tightness of the cooperation between the two, the outer edges of the rubber sealing cover 16 and the drying bag storage compartment 9 are provided with magnetic cooperation blocks 17, and the two are magnetically connected by the magnetic cooperation blocks 17. When the buffer pump air space 6 is pumped and expanded, the rubber sealing cover 16 is separated from the drying bag storage compartment 9 during the collision with the inner layer of the ton bag 1.

[0034] In addition, in order to facilitate the lifting of the ton bag during transportation, nylon slings 18 are provided on all sides of the upper part of the outer ton bag 2. When the battery material is filled, in order to prevent the battery material from leaking from the loading and unloading ports 3 on the upper and lower sides, zipper-type sealing strips 19 are provided on the inner sides of the loading and unloading ports 3 on the upper and lower sides, and magic buckles 20 are also provided on one side of the loading and unloading ports 3 on the upper and lower sides. The magic buckles 20 cooperate with the magic strips 21 provided on the upper and lower sides of the outer ton bag 2. During use, the loading and unloading ports 3 are first sutured by pulling the thread, and then the magic buckles 20 on the loading and unloading ports 3 are cooperated with the corresponding magic strips 21 on the outer ton bag 2, so that the loading and unloading ports 3 are closed. At the same time, in order to improve the structural strength of the ton bag, the sides of the outer ton bag 2 are provided with nylon cross-shaped reinforcement ribs 22.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A light-shielding, moisture-proof composite bag for lithium battery cathode materials, comprising an inner ton bag and an outer ton bag. The outer ton bag, when unfolded, has a cubic cavity structure. The outer ton bag has a feed inlet and a discharge outlet at the top and bottom centers, respectively. The inner ton bag is disposed inside the cubic cavity structure of the outer ton bag. The inner ton bag has protruding loading and unloading ports on its upper and lower sides. The bag is characterized by: The inner bulk bag is a conductive sealed bag, the inner side of the outer bulk bag is provided with a sealed lining film layer, the outer bulk bag is provided with an electrostatic lead-out block electrically connected to the inner bulk bag, the inner bulk bag and the outer bulk bag are located on the side of the bag body and are separated from each other to form a buffer pumping air space, the side wall of the outer bulk bag is provided with an inflation and deflation valve connected to the buffer pumping air space, and the buffer pumping air space is inflated and deflated through the inflation and deflation valve. When the buffer pumping air space is in an inflation state, the outer bulk bag is unfolded to form a cubic structure, and a number of drying bags are also detachably installed on the inner side of the inner bulk bag, and the outer bulk bag is provided with a corresponding number of drying bag storage cabins that is the same as the number of drying bags and corresponds one to one. When the buffer pumping air space is in an inflation state, the drying bag protrudes from the drying bag storage cabin and is exposed to the inner bulk bag space, and when the buffer pumping air space is in an exhaust state, the drying bag moves into the drying bag storage cabin to be isolated from the external environment; The buffer pump air space formed on each side of the inner and outer ton bags forms several drying areas separated by the suture lines. Drying bags are provided at the apexes of the protrusions that expand and protrude in the inflated state. The drying bags are engaged with the mounting blocks provided on the inner ton bag by snap-fitting. A traction spring is provided in the drying bag storage compartment on the side of the mounting block away from the drying bag. The traction spring pulls the drying bag toward the side of the drying bag storage compartment for storage in the absence of external force. A rubber sealing cover is also installed on the drying bag, and the rubber sealing cover cooperates with the drying bag storage compartment to isolate the drying bag from the external environment.

2. The light-shielding and moisture-proof lithium battery cathode material composite bag according to claim 1, characterized in that: The material used for the inner layer ton bag and the sealing inner lining film layer is polyethylene, and the inner and outer sides of the inner layer ton bag are also compounded with conductive aluminum foil.

3. The light-shielding and moisture-proof lithium battery cathode material composite bag according to claim 2, characterized in that: The outer ton bag further comprises a woven cloth layer arranged on the outside of the sealing inner lining film layer, and the material used for the woven cloth layer is linen.

4. The light-shielding and moisture-proof lithium battery cathode material composite bag according to claim 1, characterized in that: The inner layer ton bag and the static electricity derivation block provided on the outer layer ton bag are connected to form a static electricity derivation junction.

5. The light-shielding and moisture-proof composite bag for lithium battery cathode materials according to claim 4, characterized in that: Each surface of the outer ton bags is provided with an electrostatic lead-out block, and the electrostatic lead-out block includes a magnetic block and a conductive film layer wrapped on the outside. During the stacking process, the outer ton bags are magnetically adsorbed and connected to the electrostatic lead-out blocks provided on the adjacent outer ton bags through the electrostatic lead-out blocks provided on each surface.

6. The light-shielding and moisture-proof lithium battery cathode material composite bag according to claim 1, characterized in that: The rubber sealing cover and the outer edge of the drying bag storage compartment are both provided with magnetic matching blocks, and the two are magnetically connected by the magnetic matching blocks. When the buffer pump air space is in the pumping state, it promotes the separation of the inner ton bag and the outer ton bag, thereby pushing the rubber sealing cover and the drying bag storage compartment to separate.

7. A light-shielding and moisture-proof composite bag for lithium battery cathode materials according to any one of claims 1 to 6, characterized in that: Nylon slings are arranged on all four sides above the outer ton bag.

8. The light-shielding and moisture-proof composite bag for lithium battery cathode materials according to any one of claim 7, characterized in that: The inner sides of the loading and unloading ports on the upper and lower sides are provided with zipper sealing strips, and one side of the loading and unloading ports on the upper and lower sides is also provided with a magic buckle, and the magic buckle cooperates with the magic strips provided on the upper and lower sides of the outer ton bag.

9. The light-shielding and moisture-proof composite bag for lithium battery cathode materials according to any one of claim 8, characterized in that: The sides of the outer ton bag are provided with nylon cross-shaped reinforcement ribs.

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