Polymer lithium ion battery cell capable of rapidly dissipating heat

Abstract

The utility model relates to the field of battery cells, in particular to a polymer lithium ion battery cell capable of rapidly dissipating heat, which comprises a shell and a group of battery cell bodies arranged in the shell, the battery also comprises a heat dissipation mechanism; the heat dissipation mechanism is arranged in the shell and is used for carrying out heat dissipation treatment on the battery cell body; wherein the heat dissipation mechanism comprises a concentric-square-shaped pipe positioned on the outer side of the battery cell body, two groups of fan-shaped spray heads are mounted on the outer side of the concentric-square-shaped pipe, the fan-shaped spray heads are positioned between two adjacent battery cell bodies, the fan-shaped spray heads are obliquely arranged upwards, two groups of inclined pipes are arranged on the outer side of the concentric-square-shaped pipe, and the orientations of the two groups of inclined pipes are opposite; multi-point air cooling treatment can be carried out on the outer side of the battery cell, the air flowing effect in the shell is improved in cooperation with surrounding air flow, heat dissipation dead angles are effectively reduced, meanwhile, the heat conduction effect of the heat dissipation fins is improved, and the rapid heat dissipation effect is achieved in cooperation with an air cooling heat dissipation mode.

Description

Technical Field

[0001] This utility model relates to the field of battery cells, and in particular to a polymer lithium-ion battery cell with rapid heat dissipation. Background Technology

[0002] Lithium polymer batteries, also known as high-molecular lithium batteries, are a type of chemical battery. Compared to previous batteries, they are characterized by high energy density, miniaturization, and lightweight design. The battery cells, which are usually used as raw materials, require further processing before they can be used. For example, in electric vehicles, energy storage systems, and consumer electronics, the cells are assembled into battery modules or battery packs.

[0003] A search revealed that the Chinese patent "A Combined Battery Cell Assembly with Good Heat Dissipation" (publication number CN217485568U) includes a battery cell assembly housing, a mounting base, battery cell bodies, a cooling fan, and heat dissipation copper fins. The mounting base is fixed inside the battery cell assembly housing, and all battery cell bodies are installed inside the mounting base. The heat dissipation copper fins are arranged between the battery cell bodies. Anti-vibration protection mechanisms are provided on both sides of the mounting base. A fan frame is fixed to the inner wall of the battery cell assembly housing above the anti-vibration protection mechanisms. The cooling fan is installed on one side inside the fan frame. Thermally conductive silicone sheets are adhered to the inner walls of both sides of the battery cell assembly housing. The battery cell housing sidewalls at the location of the thermally conductive silicone pads are equipped with equally spaced heat dissipation slots, and heat dissipation fins are installed inside the heat dissipation slots. This multi-layered heat dissipation method improves heat dissipation efficiency and effect. However, the above method has the following drawbacks in actual use: Although a fan is used to increase the airflow speed inside and outside the housing, the fixed installation point of the fan and the direction of airflow result in heat dissipation dead zones inside the housing. Furthermore, the heat dissipation efficiency of using heat dissipation fins to conduct heat is low, making it difficult to achieve rapid heat dissipation during continuous use of the battery cells.

[0004] Therefore, a polymer lithium-ion battery cell with rapid heat dissipation is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a polymer lithium-ion battery cell that can quickly dissipate heat in order to solve the above-mentioned problems, thereby improving the issues of heat dissipation dead zones and low heat dissipation efficiency inside the casing.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a polymer lithium-ion battery cell capable of rapid heat dissipation, comprising a shell and a set of battery cell bodies installed inside it; further comprising a heat dissipation mechanism, wherein the heat dissipation mechanism is disposed inside the shell and is used to dissipate heat from the battery cell bodies; wherein, the heat dissipation mechanism includes a U-shaped tube located outside the battery cell bodies, two sets of fan-shaped nozzles are installed on the outside of the U-shaped tube, the fan-shaped nozzles are located between two adjacent battery cell bodies, the fan-shaped nozzles are inclined upwards, and two sets of inclined tubes are disposed on the outside of the U-shaped tube, the two sets of inclined tubes being arranged in opposite directions.

[0007] Preferably, the heat dissipation mechanism further includes two sets of heat dissipation fins, the heat dissipation fins having through holes inside, and each side of the heat dissipation fins having a set of oblique holes communicating with the through holes.

[0008] Preferably, a heat-conducting sleeve is provided on the outer side of the battery cell body, and heat-conducting rods are installed on both sides of the heat-conducting sleeve. One end of the heat-conducting rod is inserted into the interior of the outer shell and a heat-dissipating plate is installed thereon. The heat dissipation fins are installed on the outer side of the heat-dissipating plate.

[0009] Preferably, an axial flow fan is installed on the outside of the housing, and a flow guide shroud corresponding to the axial flow fan is provided inside the housing, with one end of the flow guide shroud connected to a U-shaped pipe.

[0010] Preferably, a top cover is bolted to the top of the outer casing, a heat dissipation grille is provided inside the top cover, and a flow guide cover with arc-shaped sides is installed on the top of the top cover, with the heat dissipation fins located below the arc-shaped sides of the flow guide cover.

[0011] Preferably, a flow guide strip is installed at each of the four corners inside the outer casing, and the flow guide strip is arc-shaped on the side closest to the battery cell body.

[0012] Preferably, a dustproof plate is installed on one side of the axial flow fan.

[0013] The beneficial effects of this utility model are:

[0014] 1. By setting up two sets of inclined tubes and fan-shaped nozzles, the fan-shaped nozzles are used to treat the gaps between each battery cell body with cold air, so that the gas flows in an inclined upward direction. Then, the two sets of inclined tubes are used to guide the gas in opposite directions to the inner wall of the shell. Then, with the help of guide strips, the gas is guided to flow in a circular motion, moving slowly from the bottom wall of the shell to the top. Finally, the gas guided by the fan-shaped nozzles is discharged along the heat dissipation grille. This method effectively improves the airflow effect inside the shell and reduces the occurrence of heat dissipation dead corners inside the shell.

[0015] 2. By setting through holes and angled holes, the exposed area of ​​the heat dissipation fins can be effectively increased. At the same time, the angled holes can also improve the convection between the through holes and the outside air, improve the heat dissipation effect, and with the guide cover, the air is directed to the heat dissipation fins, driving the air around them to flow and assisting them in active heat dissipation, so that the heat dissipation fins can achieve the effect of rapid heat dissipation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the spiral tube and the inclined tube of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the heat dissipation fins and through holes of this utility model;

[0020] Figure 5 for Figure 3 A magnified view of A in the middle.

[0021] In the diagram: 100, outer casing; 110, axial flow fan; 120, air guide shroud; 130, air guide strip; 140, air guide cover; 200, battery cell body; 210, heat-conducting sleeve; 211, heat-conducting rod; 212, heat dissipation plate; 300, heat dissipation mechanism; 310, U-shaped tube; 320, fan-shaped nozzle; 330, inclined tube; 340, heat dissipation fins; 341, through hole; 342, inclined hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-5As shown, a polymer lithium-ion battery cell capable of rapid heat dissipation includes a housing 100 and a set of battery cell bodies 200 installed inside it; it also includes a heat dissipation mechanism 300, which is disposed inside the housing 100 and is used to dissipate heat from the battery cell bodies 200; wherein, the heat dissipation mechanism 300 includes a U-shaped tube 310 located outside the battery cell bodies 200, two sets of fan-shaped nozzles 320 are installed on the outside of the U-shaped tube 310, the fan-shaped nozzles 320 are located between two adjacent battery cell bodies 200, and the fan-shaped nozzles 320 are inclined upwards; two sets of inclined tubes 330 are disposed on the outside of the U-shaped tube 310, and the two sets of inclined tubes 330 are arranged in opposite directions.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, the heat dissipation mechanism 300 also includes two sets of heat dissipation fins 340. The heat dissipation fins 340 have through holes 341 inside, and both sides of the heat dissipation fins 340 have a set of oblique holes 342 that communicate with the through holes 341.

[0025] When heat dissipating the battery cell body 200, the heat on the battery cell body 200 can be discharged to the outside by using the heat dissipation fins 340. The through hole 341 can effectively increase the exposed area of ​​the heat dissipation fins 340. At the same time, the inclined hole 342 can also improve the convection between the through hole 341 and the outside air, thereby improving the heat dissipation effect. Then, the outside air is introduced into the U-shaped tube 310. Some of the air is sprayed obliquely between two adjacent battery cell bodies 200 along the fan-shaped nozzle 320, which expands the air cooling area and reduces the heat accumulation between two adjacent battery cell bodies 200. With the help of two sets of inclined tubes 330, the air is obliquely guided to the inner wall of the outer shell 100 in opposite directions, so that the two sets of air flow in a circle and make an approximately spiral motion on the outside of the battery cell body 200. It slowly moves from the bottom wall of the inner shell 100 to the top, driving the air flow inside the outer shell 100.

[0026] like Figure 1 and Figure 2 As shown, a heat-conducting sleeve 210 is provided on the outer side of the battery cell body 200. Heat-conducting rods 211 are installed on both sides of the heat-conducting sleeve 210. One end of the heat-conducting rod 211 is inserted into the interior of the outer shell 100 and is equipped with a heat-dissipating plate 212. Heat dissipation fins 340 are installed on the outer side of the heat-dissipating plate 212.

[0027] By using the heat-conducting sleeve 210 and the heat-conducting rod 211, the heat generated by the battery cell body 200 can be directed to the heat dissipation plate 212, and then the heat can be discharged to the outside along the heat dissipation fins 340.

[0028] like Figure 1 , Figure 2 and Figure 3As shown, an axial flow fan 110 is installed on the outside of the housing 100, and a flow guide shroud 120 corresponding to the axial flow fan 110 is provided inside the housing 100. One end of the flow guide shroud 120 is connected to the U-shaped pipe 310.

[0029] An axial flow fan 110 is used to guide the gas along the guide shroud 120 into the U-shaped pipe 310 to complete the gas delivery.

[0030] like Figure 1 and Figure 2 As shown, a top cover is bolted to the top of the outer casing 100. A heat dissipation grille is provided inside the top cover. A flow guide cover 140 with arc-shaped sides is installed on the top of the top cover. The heat dissipation fins 340 are located below the arc-shaped sides of the flow guide cover 140.

[0031] The design of the heat dissipation grille facilitates the discharge of gas from the outer casing 100. The arc-shaped design of the flow guide cover 140 directs the gas discharged from the outer casing 100 onto the heat dissipation fins 340, driving the surrounding gas flow and assisting in active heat dissipation, thereby enabling the heat dissipation fins 340 to achieve rapid heat dissipation.

[0032] like Figure 2 As shown, guide strips 130 are installed at the four corners inside the outer casing 100, and the guide strips 130 are arc-shaped on the side near the cell body 200.

[0033] By using the guide strip 130, the gas discharged from the inclined tube 330 can be smoothly guided, ensuring that the gas flows around the inside of the outer shell 100.

[0034] like Figure 1 As shown, a dustproof plate is installed on one side of the axial flow fan 110.

[0035] The use of a dustproof plate can reduce the occurrence of external dust entering the interior of the housing 100 during the operation of the axial flow fan 110.

[0036] Working principle: The battery cell body 200 is mounted inside the outer casing 100 via a mounting base. The connecting wires to the battery cell body 200 extend from the mounting base to the outside of the outer casing 100. During heat dissipation of the battery cell body 200, the heat generated by the battery cell body 200 is directed to the heat dissipation plate 212 via the heat-conducting sleeve 210 and heat-conducting rod 211. The heat is then discharged to the outside along the heat dissipation fins 340. The through-hole 341 effectively increases the exposed area of ​​the heat dissipation fins 340, while the oblique hole 342 enhances the convection between the through-hole 341 and the outside air, thereby improving the heat dissipation effect. An axial flow fan 110 guides the gas along the guide shroud 120 into the loop duct 310, completing the gas delivery. At this time, some gas is obliquely sprayed out between adjacent battery cell bodies 200 via fan-shaped nozzles 320, expanding the... The large air-cooling area reduces heat accumulation between adjacent battery cells 200. Two sets of inclined tubes 330 guide the gas in opposite directions to the inner wall of the outer casing 100, causing the two sets of gas to flow in a circular motion. The gas moves in an almost spiral motion outside the battery cell 200, slowly moving from the bottom wall of the outer casing 100 to the top, driving the airflow within the casing 100. The gas then exits along the heat dissipation grille. Subsequently, the arc-shaped guide cover 140 directs the exiting gas from the outer casing 100 onto the heat dissipation fins 340, driving the surrounding airflow and assisting in active heat dissipation. The entire device provides multi-point air cooling for the outer side of the battery cell 200. Combined with the circulating airflow to improve airflow within the outer casing 100, it effectively reduces heat dissipation dead zones and enhances the thermal conductivity of the heat dissipation fins 340. This air-cooling method achieves rapid heat dissipation.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polymer lithium-ion battery cell with rapid heat dissipation, characterized in that, include: The outer casing (100) and a set of battery cell bodies (200) installed inside it; It also includes a heat dissipation mechanism (300), which is disposed inside the housing (100) and is used to dissipate heat from the battery cell body (200); The heat dissipation mechanism (300) includes a U-shaped tube (310) located outside the battery cell body (200). Two sets of fan-shaped nozzles (320) are installed on the outside of the U-shaped tube (310). The fan-shaped nozzles (320) are located between two adjacent battery cell bodies (200) and are inclined upwards. Two sets of inclined tubes (330) are provided on the outside of the U-shaped tube (310) and are arranged in opposite directions.

2. The polymer lithium-ion battery cell with rapid heat dissipation according to claim 1, characterized in that: The heat dissipation mechanism (300) also includes two sets of heat dissipation fins (340). The heat dissipation fins (340) have through holes (341) inside, and both sides of the heat dissipation fins (340) have a set of oblique holes (342) communicating with the through holes (341).

3. The polymer lithium-ion battery cell with rapid heat dissipation according to claim 2, characterized in that: A heat-conducting sleeve (210) is fitted on the outside of the battery cell body (200). Heat-conducting rods (211) are installed on both sides of the heat-conducting sleeve (210). One end of the heat-conducting rod (211) is inserted into the inside of the outer shell (100) and a heat-dissipating plate (212) is installed thereon. The heat dissipation fins (340) are installed on the outside of the heat-dissipating plate (212).

4. The polymer lithium-ion battery cell with rapid heat dissipation according to claim 1, characterized in that: An axial flow fan (110) is installed on the outside of the housing (100), and a flow guide shroud (120) corresponding to the axial flow fan (110) is provided inside the housing (100). One end of the flow guide shroud (120) is connected to the U-shaped pipe (310).

5. A polymer lithium-ion battery cell with rapid heat dissipation according to claim 2, characterized in that: The top of the outer shell (100) is bolted to a top cover, the inside of which is provided with a heat dissipation grille, and the top of the top cover is provided with a flow guide cover (140) with two arc-shaped sides. The heat dissipation fins (340) are located below the arc-shaped sides of the flow guide cover (140).

6. A polymer lithium-ion battery cell with rapid heat dissipation according to claim 1, characterized in that: Each of the four corners inside the outer casing (100) is equipped with a flow guide strip (130), and the flow guide strip (130) is arc-shaped on the side near the battery cell body (200).

7. A polymer lithium-ion battery cell with rapid heat dissipation according to claim 4, characterized in that: A dustproof plate is installed on one side of the axial flow fan (110).

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