Packaging structure of polymer lithium battery

Abstract

The invention belongs to the technical field of lithium battery packaging, and particularly relates to a polymer lithium battery packaging structure which comprises a packaging box. A packaging cover is mounted at the top of the packaging box, and a power supply is mounted in the packaging cover; a cooling fan is mounted on the packaging cover, and the cooling fan is electrically connected with a power supply through a wire; partition plates which are evenly arranged are installed in the packaging box. The end faces of the two sides of the partition plate are fixedly connected with clamping plates which are evenly arranged. Clamping plates which are uniformly arranged are also mounted on the end surface of one side, parallel to the partition plate, of the packaging box; packaging boxes are connected in the opposite clamping plates in a sliding manner, and the packaging boxes are used for packaging polymer lithium batteries; a distance is reserved between the packaging boxes; the method is mainly used for solving the problems that when the polymer lithium battery is transported, the temperature is too high, and when the polymer lithium battery is impacted or extruded, the polymer lithium battery is fractured, and the risks of liquid leakage, fire breakout and even explosion are caused.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery packaging technology, specifically a packaging structure for a polymer lithium battery. Background Technology

[0002] Polymer lithium-ion batteries are the most technologically advanced and latest type of battery in the industry. They use lithium cobalt oxide as the positive electrode, carbon materials as the negative electrode, and a solid or gel-state organic conductive film as the electrolyte. The latest generation of rechargeable lithium-ion batteries uses aluminum-plastic film for packaging. They are a replacement for liquid lithium-ion batteries, possessing not only the high voltage, long cycle life, stable discharge voltage, and clean, pollution-free characteristics of liquid lithium-ion batteries, but also eliminating the explosion safety hazards associated with liquid lithium-ion batteries. They also have higher energy density, are more flexible and convenient in shape, and are lightweight. Their performance meets or exceeds the technical specifications of liquid lithium-ion batteries, and they offer greater safety.

[0003] When transporting polymer lithium batteries, the temperature needs to be controlled between -5 and 35°C. During transportation, severe vibration, impact or squeezing should be prevented, and exposure to sunlight and rain should be avoided.

[0004] If polymer lithium batteries are transported and the temperature is too high, or if they are subjected to impact or compression, they may rupture, causing leakage, fire, or even explosion.

[0005] In view of this, the present invention proposes a packaging structure for a polymer lithium battery to solve the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a packaging structure for polymer lithium batteries.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a polymer lithium battery packaging structure of the present invention includes a packaging box; a packaging cover is installed on the top of the packaging box, and a power supply is installed inside the packaging cover; a heat dissipation fan is installed on the packaging cover, and the heat dissipation fan is electrically connected to the power supply through a wire.

[0008] The encapsulation box is equipped with evenly arranged partitions; both sides of the partitions are fixedly connected to evenly arranged clamping plates; the encapsulation box is also equipped with evenly arranged clamping plates on one side of the partitions that is parallel to each other; encapsulation boxes are slidably connected to the opposite clamping plates, and the encapsulation boxes are used to encapsulate polymer lithium batteries; a distance is left between the encapsulation boxes.

[0009] The packaging box includes a box body; two mounting slots are formed on the bottom surface of the box body; springs are fixedly installed in the two mounting slots and evenly arranged, and a buffer layer is fixedly connected to the other side of the springs; the top of the buffer layer is arc-shaped.

[0010] The two mounting slots are located on opposite sides of the box body, where evenly arranged first ventilation slots are provided;

[0011] The top of the box body has convex grooves on both sides of the box body; the top of the box body has a lid; the lid has evenly arranged second ventilation grooves.

[0012] Two convex blocks are fixedly installed on the lower surface of the box cover, and the convex blocks are slidably connected to the convex grooves;

[0013] Two rectangular slots are provided on both sides of the second ventilation slot on the box cover; a rotating rod is rotatably connected in each rectangular slot; a rotating belt is rotatably connected to the rotating rods in the two rectangular slots on both sides of the second ventilation slot, and an extrusion layer is fixed on the rotating belt. In the initial state, the extrusion layer is located above the box cover.

[0014] Optionally, an operating groove is provided on the side opposite to the rectangular groove and the second vent groove on the box cover; an operating rod is rotatably connected in the operating groove, and one side of the operating rod is fixedly connected to the rotating rod.

[0015] Optionally, the extrusion layer is made of thermally conductive silicone; the extrusion layer has a cavity, and a spring is fixedly connected inside the cavity;

[0016] The cavity within the extrusion layer is filled with heat-conducting oil;

[0017] The spring fixed within the extruded layer is made of shape memory alloy.

[0018] Optionally, the box body is made of iron, and a magnet is provided inside the convex block.

[0019] Optionally, the buffer layer has the same structure as the compression layer.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The polymer lithium battery packaging structure of the present invention supports the polymer lithium battery through a compression layer and a buffer layer, thereby limiting the polymer lithium battery to the middle position of the box, so that the polymer lithium battery does not contact the bottom of the box or the box cover. When the polymer lithium battery is impacted during transportation, the buffer layer and the compression layer can buffer the force on the polymer lithium battery, thereby preventing the impact force from acting directly on the polymer lithium battery and causing the polymer lithium battery to rupture or even explode. At the same time, since the polymer lithium battery is individually packaged, it will not be squeezed, thereby avoiding damage to the polymer lithium battery due to compression.

[0022] 2. The polymer lithium battery packaging structure of the present invention can dissipate heat from the packaging box when the heat dissipation fan is activated, thereby preventing the polymer lithium battery from overheating and spontaneously combusting or exploding during transportation in hot weather. At the same time, the distance between the packaging boxes allows gas to flow, improving the heat dissipation effect of the polymer lithium battery. Furthermore, the uniformly arranged first venting grooves at the bottom of the box and the uniformly arranged second venting grooves on the box cover allow gas to circulate within the packaging box, improving the heat dissipation effect.

[0023] 3. The encapsulation structure of the polymer lithium battery described in this invention includes a spring fixed within the extrusion layer. The presence of the spring enhances the buffering effect on the polymer lithium battery, preventing excessive impact force on the encapsulation box and thus preventing damage to the polymer lithium battery from impacting the box or cover. Since the extrusion layer is made of thermally conductive silicone, it can conduct heat to the polymer lithium battery. Simultaneously, because the extrusion layer is filled with thermally conductive oil, if the polymer lithium battery's temperature rises due to external influences, the thermally conductive oil in the extrusion layer can conduct heat away from the polymer lithium battery, thereby reducing its own heat and preventing damage due to overheating. Furthermore, since the spring within the extrusion layer is made of shape memory alloy, it will extend when heated, thus better supporting the polymer lithium battery. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of the packaging box of the present invention;

[0026] Figure 2 This is an internal structural diagram of the packaging box of the present invention;

[0027] Figure 3 This is a perspective view of the packaging box of the present invention when it is opened;

[0028] Figure 4 This is the present invention. Figure 3 Enlarged view of a portion of point A in the middle;

[0029] Figure 5 This is a perspective view of the packaging box of the present invention when it is closed;

[0030] Figure 6 This is a top view of the packaging box of the present invention when it is closed;

[0031] Figure 7 This is the present invention. Figure 6 Sectional view at point BB;

[0032] Figure 8 This is the present invention. Figure 7 Enlarged view of a section at point C.

[0033] In the picture:

[0034] 1. Packaging box; 11. Packaging cover; 12. Cooling fan; 13. Partition; 14. Card plate; 2. Packaging box; 20. Box body; 21. Mounting slot; 22. Buffer layer; 23. First ventilation slot; 24. Convex slot; 25. Box cover; 26. Second ventilation slot; 27. Convex block; 3. Rectangular slot; 31. Rotating rod; 32. Rotating belt; 33. Operating slot; 34. Operating lever; 35. Extrusion layer. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 8 As shown, the present invention discloses a polymer lithium battery packaging structure, including a packaging box 1; a packaging cover 11 is installed on the top of the packaging box 1, and a power supply is installed inside the packaging cover 11; a heat dissipation fan 12 is installed on the packaging cover 11, and the heat dissipation fan 12 is electrically connected to the power supply through a wire.

[0037] The encapsulation box 1 is equipped with evenly arranged partitions 13; both ends of the partitions 13 are fixedly connected to evenly arranged clamping plates 14; the encapsulation box 1 and the partitions 13 are also equipped with evenly arranged clamping plates 14 on the side end that is parallel to each other; each of the clamping plates 14 is slidably connected to an encapsulation box 2, and the encapsulation box 2 is used to encapsulate polymer lithium batteries; a distance is left between the encapsulation boxes 2.

[0038] The packaging box 2 includes a box body 20; two mounting slots 21 are formed on the bottom surface of the box body 20; springs are fixedly installed in the two mounting slots 21 and evenly arranged springs are fixedly connected to the other side of the springs; the top of the buffer layer 22 is arc-shaped.

[0039] The two mounting slots 21 are located on opposite sides of the box body 20, where the first ventilation slots 23 are evenly arranged.

[0040] The top of the box body 20 is provided with convex grooves 24 on both sides of the box body 20; the top of the box body 20 is provided with a box cover 25; the box cover 25 is provided with evenly arranged second ventilation grooves 26.

[0041] Two convex blocks 27 are fixedly installed on the lower surface of the box cover 25, and the convex blocks 27 are slidably connected to the convex groove 24;

[0042] Two rectangular slots 3 are provided on both sides of the second ventilation slot 26 on the box cover 25; a rotating rod 31 is rotatably connected in each rectangular slot 3; a rotating belt 32 is rotatably connected to the rotating rods 31 in the two rectangular slots 3 on both sides of the second ventilation slot 26, and an extrusion layer 35 is fixedly connected to the rotating belt 32. In the initial state, the extrusion layer 35 is located above the box cover 25.

[0043] Specifically, when transporting polymer lithium batteries, the polymer lithium batteries are first placed inside the housing 20. The batteries inside the housing 20 will contact the buffer layer 22. Then, the operator will press the polymer lithium batteries downwards, causing them to move downwards within the housing 20. During this downward movement, the buffer layer 22 will be pushed downwards, compressing the spring beneath it. Subsequently, the convex block 27 fixed to the lower surface of the cover 25 will be pushed into the convex groove 24, pushing the cover 25 backwards above the housing 20, gradually covering it. When the cover 25 is above the polymer lithium batteries, the pressing of the batteries will stop. After the pressing stops, the spring beneath the buffer layer 22 will push the batteries upwards, bringing them into contact with the rotating belt 32 located below the cover 25. Due to the pressure between the polymer lithium batteries and the rotating belt 32... Due to friction, the rotating belt 32 rotates under the friction between itself and the polymer lithium battery during the pushing of the lid 25. During the rotation of the rotating belt 32, the extrusion layer 35, which was originally located on the upper surface of the lid 25, first passes through the rectangular groove 3 and then rotates to the bottom of the lid 25 and adheres to the surface of the polymer lithium battery, thereby holding the polymer lithium battery in place. At the same time, with the support of the buffer layer 22, the polymer lithium battery is limited to the middle of the box 20, so that the polymer lithium battery does not contact the bottom of the box 20 or the lid 25. When the polymer lithium battery is impacted during transportation, the buffer layer 22 and the extrusion layer 35 can buffer the force on the polymer lithium battery, thereby preventing the impact force from acting directly on the polymer lithium battery and causing it to rupture or even explode. At the same time, since the polymer lithium battery is individually packaged, it will not be squeezed, thus avoiding damage to the polymer lithium battery due to squeezing.

[0044] After the polymer lithium battery is installed in the box 20 and the box cover 25 is sealed, the staff places the encapsulation box 2 into the corresponding card plate 14, then puts the encapsulation cover 11 on the encapsulation box 1, and starts the cooling fan 12 for transportation. When the cooling fan 12 is started, it can dissipate heat from the encapsulation box 1, thereby preventing the polymer lithium battery from overheating and spontaneously combusting or exploding during transportation in hot weather. At the same time, because there is a distance between the encapsulation boxes 2, gas can flow, which can improve the heat dissipation effect of the polymer lithium battery. Furthermore, because the bottom of the box 20 has a uniformly arranged first venting groove 23 and the box cover 25 has a uniformly arranged second venting groove 26, the gas inside the encapsulation box 2 can circulate, which can improve the heat dissipation effect.

[0045] In one embodiment of the present invention, the rectangular groove 3 and the second ventilation groove 26 are respectively provided with operation grooves 33 on the opposite side of the box cover 25; an operation rod 34 is rotatably connected in the operation groove 33, and one side of the operation rod 34 is fixedly connected to the rotating rod 31.

[0046] Specifically, since the operating rod 34 and the rotating rod 31 are fixedly connected in the operating slot 33, when the cover 25 completely covers the box body 20, if the extrusion layer 35 is not completely rotated below the cover 25, the operating rod 34 can be manually rotated. During the rotation of the operating rod 34, the rotating rod 31 can be driven to rotate, thereby driving the rotating belt 32 to rotate, so that the extrusion layer 35 can be rotated to the bottom of the cover 25, so that the extrusion layer 35 can contact the polymer lithium battery.

[0047] In one embodiment of the present invention, the extrusion layer 35 is made of thermally conductive silicone; the extrusion layer 35 has a cavity, and a spring is fixedly connected inside the cavity;

[0048] The cavity provided in the extrusion layer 35 is filled with heat-conducting oil;

[0049] The spring fixed within the extrusion layer 35 is made of shape memory alloy;

[0050] Specifically, since the extrusion layer 35 is fixed with a spring, the presence of the spring can improve the buffering effect on the polymer lithium battery, prevent the packaging box 2 from being subjected to excessive impact force, and prevent the polymer lithium battery from colliding with the box body 20 or the box cover 25, causing damage to the polymer lithium battery. Since the extrusion layer 35 is made of thermally conductive silicone, it can conduct heat to the polymer lithium battery.

[0051] Meanwhile, since the extrusion layer 35 is filled with heat-conducting oil, if the polymer lithium battery is affected by external factors and its temperature rises, the heat-conducting oil in the extrusion layer 35 can conduct heat on the polymer lithium battery, thereby reducing the heat of the polymer lithium battery and preventing the polymer lithium battery from being damaged due to excessive temperature.

[0052] Meanwhile, since the spring inside the extrusion layer 35 is made of shape memory alloy, when heated, the spring inside the extrusion layer 35 will stretch, thus better resisting the polymer lithium battery;

[0053] At the same time, when installing polymer lithium batteries into electrical devices, you can also choose to directly install the encapsulation box 2 into the electrical device, or choose according to the actual situation.

[0054] In one embodiment of the present invention, the box body 20 is made of iron, and a magnet is provided inside the convex block 27;

[0055] Specifically, since the convex block 27 contains a magnet, the magnet can be attracted to the box body 20, thereby improving the fixing effect between the box lid 25 and the box body 20 and preventing the box lid 25 from easily falling off the box body 20.

[0056] In one embodiment of the present invention, the buffer layer 22 and the compression layer 35 have the same structure;

[0057] Specifically, since the buffer layer 22 and the extrusion layer 35 have the same structure, the buffering effect and thermal conductivity of the polymer lithium battery can be further improved.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging structure for a polymer lithium battery, characterized in that, Includes a packaging box (1); the top of the packaging box (1) is equipped with a packaging cover (11), and a power supply is installed inside the packaging cover (11); a heat dissipation fan (12) is installed on the packaging cover (11), and the heat dissipation fan (12) is electrically connected to the power supply through a wire. The encapsulation box (1) is equipped with evenly arranged partitions (13); both sides of the partitions (13) are fixedly connected with evenly arranged clamping plates (14); the encapsulation box (1) and the partitions (13) are also equipped with evenly arranged clamping plates (14) on the side of the encapsulation box (1) that are parallel to each other; each of the opposite clamping plates (14) is slidably connected with an encapsulation box (2), and the encapsulation box (2) is used to encapsulate polymer lithium batteries; there is a distance between the encapsulation boxes (2). The packaging box (2) includes a box body (20); two mounting slots (21) are provided on the bottom surface of the box body (20); springs are fixedly installed in the two mounting slots (21) and a buffer layer (22) is fixedly connected to the other side of the springs; the top of the buffer layer (22) is arc-shaped. The two mounting slots (21) are located on opposite sides of the box body (20) and have evenly arranged first ventilation slots (23); The top of the box body (20) is provided with convex grooves (24) on both sides of the box body (20); the top of the box body (20) is provided with a box cover (25); the box cover (25) is provided with evenly arranged second ventilation grooves (26); Two convex blocks (27) are fixedly installed on the lower surface of the box cover (25), and the convex blocks (27) are slidably connected to the convex groove (24).

2. The packaging structure of a polymer lithium battery according to claim 1, characterized in that: The second ventilation groove (26) has two rectangular grooves (3) on both sides of the box cover (25); each rectangular groove (3) is rotatably connected to a rotating rod (31); the rotating rods (31) in the two rectangular grooves (3) on both sides of the second ventilation groove (26) are rotatably connected to a rotating belt (32), and a pressing layer (35) is fixed on the rotating belt (32). In the initial state, the pressing layer (35) is located above the box cover (25).

3. The packaging structure of a polymer lithium battery according to claim 2, characterized in that: The rectangular groove (3) and the second ventilation groove (26) are respectively provided with operation grooves (33) on the opposite side of the box cover (25); an operation rod (34) is rotatably connected in the operation groove (33), and one side of the operation rod (34) is fixedly connected to the rotating rod (31).

4. The packaging structure of a polymer lithium battery according to claim 2, characterized in that: The extrusion layer (35) is made of thermally conductive silicone; the extrusion layer (35) has a cavity, and a spring is fixedly connected inside the cavity.

5. The packaging structure of a polymer lithium battery according to claim 4, characterized in that: The cavity provided in the extrusion layer (35) is filled with heat-conducting oil.

6. The packaging structure of a polymer lithium battery according to claim 4, characterized in that: The spring fixed within the extrusion layer (35) is made of shape memory alloy.

7. The packaging structure of a polymer lithium battery according to claim 1, characterized in that: The box body (20) is made of iron, and the convex block (27) contains a magnet.

8. The packaging structure of a polymer lithium battery according to claim 2, characterized in that: The structure of the buffer layer (22) is exactly the same as that of the compression layer (35).

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