A lithium battery heat dissipation packaging shell based on phase change material

Abstract

This invention provides a lithium battery heat dissipation packaging shell based on phase change material, including an outer frame comprising a fixed frame plate, a connecting base plate, and a connecting cover plate; an inner frame connected to the inner side of the outer frame for mounting the lithium battery body; a phase change cooling component connected to both the inner and outer sides of the inner frame for cooling the lithium battery body; and a heat dissipation component disposed on the outer side of the inner frame for dissipating heat from the lithium battery body. This invention utilizes the phase change cooling component to absorb heat from the lithium battery body and dissipate it through the heat dissipation component, thereby improving the heat dissipation effect of the lithium battery. Furthermore, heat dissipation requires no additional energy consumption, avoiding increased production and usage costs of the lithium battery packaging structure. Simultaneously, it provides the lithium battery packaging structure with strong support strength, facilitating the installation and use of the lithium battery.

Description

Technical Field

[0001] This utility model relates to the field of battery packaging, and in particular to a heat dissipation packaging shell for lithium batteries based on phase change materials. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. With advantages such as high energy density, light weight, small size, and portability, they have become one of the key technologies in modern electronic devices and energy storage. In a lithium-ion battery, lithium ions embedded in the carbon layer of the negative electrode migrate through the polymer separator to the positive electrode. Electrons flow from the negative electrode to the positive electrode through an external circuit, forming a current that drives the load. During discharge, lithium ions in the lithium-containing compound at the positive electrode are released, pass through the electrolyte and the polymer separator, and migrate to the negative electrode, embedding themselves in the micropores of the carbon layer. Simultaneously, charge compensation electrons from outside the battery flow from the positive electrode to the negative electrode through an external current. Lithium-ion batteries are mainly used in consumer electronic devices such as digital products, mobile phones, power banks, and laptops; medical electronics, power tools, drones, commercial robots, electric vehicles, photovoltaic energy storage, railway infrastructure, security communications, and surveying and mapping; and aerospace, shipbuilding, satellite navigation, and high-energy physics. Commonly used types include ultra-low temperature lithium batteries, high temperature lithium batteries, lithium titanate batteries, and explosion-proof lithium batteries. Lithium battery packaging is a crucial step in lithium battery production, directly affecting battery performance, safety, energy density, cost, and applicable scenarios.

[0003] When lithium batteries are used, they need to be encapsulated. After encapsulation, the lithium battery needs to be heat-dissipated to avoid heat accumulation that could affect its normal use. In the authorized Chinese utility model patent "Announcement No.: CN218602500U, Title: A Lithium Battery Encapsulation Structure", the combination of a cooling oil tank, a temperature sensor, a semiconductor cooling chip, a controller, and a phase change heat absorption plate effectively achieves automatic cooling of the lithium battery inside the encapsulation structure. At the same time, the phase change heat absorption plate absorbs heat inside the encapsulation structure, accelerating the heat dissipation rate. However, the use of cooling chips, controllers, and other devices in the above application means that the lithium battery needs to consume additional energy for heat dissipation, increasing the production and use costs of lithium battery encapsulation. In addition, the phase change heat absorption plate is only placed on the outside of the encapsulation shell, resulting in poor heat absorption and dissipation capabilities, which affects the heat dissipation effect of the lithium battery. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of poor heat dissipation in the prior art and to provide a heat dissipation packaging shell for lithium batteries based on phase change materials.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a heat dissipation packaging shell for lithium batteries based on phase change materials, including an outer frame, which comprises a fixed frame plate, a connecting base plate, and a connecting cover plate.

[0007] An inner frame is connected to the inside of the outer frame and is used to mount the lithium battery body.

[0008] A phase change cooling component is connected to both the inner and outer sides of the inner frame, and is used to cool the lithium battery body.

[0009] A heat dissipation component is provided on the outer side of the inner frame, and the heat dissipation component is used to dissipate heat from the lithium battery body.

[0010] In this technical solution, the phase change cooling component can absorb the heat of the lithium battery body and dissipate it through the heat dissipation component, thereby improving the heat dissipation effect of the lithium battery. Moreover, no additional energy is consumed during heat dissipation, avoiding increasing the production and use costs of the lithium battery packaging structure. At the same time, the lithium battery packaging structure has strong support strength, which facilitates the installation and use of the lithium battery.

[0011] Preferably, a connecting base plate is connected to the lower side of the fixed frame plate, and a connecting cover plate is detachably connected to the upper side of the fixed frame plate.

[0012] In this technical solution, the connecting cover plate facilitates the installation and removal of the lithium battery body.

[0013] Preferably, the inner frame includes a middle frame plate, and side frame plates are respectively provided on the upper and lower sides of the middle frame plate. The middle frame plate and the side frame plates are connected by multiple vertical connecting plates.

[0014] Multiple horizontal connecting plates are connected to the outside of the vertical connecting plate, and the end of the horizontal connecting plate away from the vertical connecting plate is connected to the inside of the fixed frame plate.

[0015] In this technical solution, the inner frame can be used to support the lithium battery body, and the inner frame and the lithium battery body are selected in the heat dissipation channel to improve the heat dissipation effect of the lithium battery.

[0016] Preferably, the bottom of the lower frame plate is connected to the top of the connecting base plate, and the top of the upper frame plate is detachably connected to the connecting cover plate.

[0017] This technical solution increases the stability of the connecting cover plate installation.

[0018] Preferably, the phase change cooling component includes an inner phase change material plate and an outer phase change material plate, wherein the inner phase change material plate is connected to the inner side of the middle frame plate and the outer side of the frame plate, and the outer phase change material plate is connected to the outer side of the middle frame plate and the frame plate.

[0019] In this technical solution, the phase change cooling component can absorb and dissipate heat from both the inner and outer sides of the inner frame of the lithium battery body, thereby improving the heat dissipation effect of the lithium battery.

[0020] Preferably, both the intermediate frame plate and the outer frame plate are provided with multiple mounting holes, and heat-conducting columns are provided in the mounting holes. The two ends of the heat-conducting columns are respectively connected to the inner phase change material plate and the outer phase change material plate.

[0021] In this technical solution, heat exchange can be carried out between the inner phase change material plate and the outer phase change material plate using heat-conducting pillars, which facilitates the dissipation of heat generated by the lithium battery body.

[0022] Preferably, the heat dissipation component includes a heat dissipation port and a ventilation channel, and the side of the fixed frame plate has multiple heat dissipation ports;

[0023] Both the connecting base plate and the connecting cover plate are provided with multiple ventilation channels distributed in both directions, and the ventilation channels are interwoven with each other.

[0024] In this technical solution, a heat dissipation component can be used to dissipate heat from the lithium battery body.

[0025] Preferably, a dustproof mesh is connected to the heat dissipation vent.

[0026] In this technical solution, a dustproof net is used to prevent dust and other contaminants from entering the outer frame.

[0027] Preferably, a plurality of partition plates are provided on the inner side of the inner frame, and the two ends of the partition plates are respectively movably connected to the inner frame through adjustment components;

[0028] The adjustment component includes connecting columns, and two symmetrically distributed connecting columns are connected to both sides of the partition plate.

[0029] The end of the connecting column away from the partition plate is connected to a limiting slider, and the upper and lower sides of the limiting slider are slidably connected to the middle frame plate and the side frame plate, respectively.

[0030] The limiting slider is detachably connected to the connecting column and the outside of the limiting slider by locking screws.

[0031] In this technical solution, the position of the separator plate can be adjusted and locked using the adjustment component, which facilitates the installation of different lithium battery bodies.

[0032] Preferably, the partition plate is connected to a follower phase change material plate on both its upper and lower sides.

[0033] In this technical solution, the use of a follower phase change material plate facilitates the heat dissipation from the connecting base plate and the connecting cover plate.

[0034] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0035] The positive and progressive effects of this utility model are as follows:

[0036] This invention utilizes a phase change cooling component to absorb the heat of the lithium battery body and dissipate it through a heat dissipation component, thereby improving the heat dissipation effect of the lithium battery. Moreover, no additional energy is consumed during heat dissipation, avoiding increasing the production and use costs of the lithium battery packaging structure. At the same time, it makes the lithium battery packaging structure have strong support strength, which facilitates the installation and use of the lithium battery.

[0037] Meanwhile, the position of the partition plate can be adjusted using the adjustment component, and the space within the inner frame can be divided in different ways using the partition plate, thereby facilitating the installation of different types of lithium battery bodies. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a lithium battery heat dissipation packaging shell based on phase change material according to an embodiment of this utility model.

[0039] Figure 2 for Figure 1 The diagram shown is a schematic front view of the overall structure of a lithium battery heat dissipation packaging shell based on phase change materials.

[0040] Figure 3 for Figure 2 The diagram shows a cross-sectional view of a lithium battery heat dissipation package based on phase change materials.

[0041] Figure 4 for Figure 2 The diagram shows a BB cross-sectional structure of a lithium battery heat dissipation package based on phase change materials.

[0042] Figure 5 for Figure 1 The diagram shows the overall structural relationship between the inner frame, phase change cooling component, partition plate, adjustment component, and follow-up phase change material plate of the lithium battery heat dissipation packaging shell based on phase change material.

[0043] Figure 6 for Figure 1 The diagram shows a front view of the connection relationship between the inner frame, phase change cooling component, partition plate, adjustment component, and follow-up phase change material plate of the lithium battery heat dissipation packaging shell based on phase change material.

[0044] Figure 7 for Figure 6 The diagram shows a CC cross-sectional view of a lithium battery heat dissipation package based on phase change materials.

[0045] Figure 8 for Figure 6 The diagram shows a DD cross-sectional structure of a lithium battery heat dissipation package based on phase change materials.

[0046] Figure 9 for Figure 1 The diagram shows a cross-sectional view of the connecting base plate of a lithium battery heat dissipation package based on phase change materials.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Outer frame; 11. Fixed frame plate; 12. Connecting base plate; 13. Connecting cover plate;

[0049] 2. Inner frame; 21. Middle frame panel; 22. Side panel; 23. Vertical connecting panel; 24. Horizontal connecting panel;

[0050] 3. Lithium battery body;

[0051] 4. Phase change cooling component; 41. Inner phase change material plate; 42. Outer phase change material plate; 43. Heat-conducting column;

[0052] 5. Heat dissipation components; 51. Heat dissipation vents; 52. Ventilation channels; 53. Dust filter;

[0053] 6. Divider;

[0054] 7. Adjustment component; 71. Connecting post; 72. Limiting slider; 73. Locking screw;

[0055] 8. Follow-up phase change material plate. Detailed Implementation

[0056] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0057] Figures 1 to 9 The diagram shown is a structural schematic of an embodiment of the lithium battery heat dissipation packaging shell based on phase change materials of this utility model. The lithium battery heat dissipation packaging shell based on phase change materials includes an outer frame 1, which comprises a fixed frame plate 11, a connecting base plate 12, and a connecting cover plate 13.

[0058] Inner frame 2, which is connected to the inner side of outer frame 1, is used to install lithium battery body 3;

[0059] Phase change cooling component 4 is connected to the inner and outer sides of the inner frame 2 respectively, and is used to cool down the lithium battery body 3.

[0060] Heat dissipation component 5: A heat dissipation component 5 is provided on the outer side of the inner frame 2. The heat dissipation component 5 is used to dissipate heat from the lithium battery body 3.

[0061] In this technical solution, the phase change cooling component 4 can absorb the heat of the lithium battery body 3 and dissipate it through the heat dissipation component 5, thereby improving the heat dissipation effect of the lithium battery. Moreover, no additional energy is consumed during heat dissipation, avoiding increasing the production and use costs of the lithium battery packaging structure. At the same time, the lithium battery packaging structure has strong support strength, which facilitates the installation and use of the lithium battery.

[0062] The fixed frame plate 11 is connected to a connecting base plate 12 on its lower side, and a connecting cover plate 13 is detachably connected to the upper side of the fixed frame plate 11.

[0063] In this technical solution, the connecting cover plate 13 facilitates the installation and removal of the lithium battery body 3.

[0064] The connecting base plate 12 and the connecting cover plate 13 can be detachably connected by multiple screws.

[0065] In use, the lithium battery body 3 is installed inside the outer frame 1, and then the connecting cover 13 is installed to complete the lithium battery IDE encapsulation.

[0066] The inner frame 2 includes a middle frame plate 21, and side frame plates 22 are respectively provided on the upper and lower sides of the middle frame plate 21. The middle frame plate 21 and the side frame plates 22 are connected by a plurality of vertical connecting plates 23.

[0067] Multiple horizontal connecting plates 24 are connected to the outside of the vertical connecting plate 23, and the end of the horizontal connecting plate 24 away from the vertical connecting plate 23 is connected to the inside of the fixed frame plate 11.

[0068] In this technical solution, the inner frame 2 can support the lithium battery body 3, so that the inner frame 2 and the lithium battery body 3 are located in a heat dissipation channel, thereby improving the heat dissipation effect of the lithium battery.

[0069] The bottom of the lower frame plate 22 is connected to the top of the connecting base plate 12, and the top of the upper frame plate 22 is detachably connected to the connecting cover plate 13.

[0070] In this technical solution, the stability of the connecting cover plate 13 during installation is improved.

[0071] The phase change cooling component 4 includes an inner phase change material plate 41 and an outer phase change material plate 42. The inner phase change material plate 41 is connected to the inner side of the middle frame plate 21 and the side frame plate 22, and the outer phase change material plate 42 is connected to the outer side of the middle frame plate 21 and the side frame plate 22.

[0072] In this technical solution, the phase change cooling component 4 can absorb and dissipate heat from both the inner and outer sides of the inner frame 2 to the lithium battery body 3, thereby improving the heat dissipation effect of the lithium battery.

[0073] Both the intermediate frame plate 21 and the side frame plate 22 are provided with multiple mounting holes. A heat-conducting column 43 is provided in the mounting hole. The two ends of the heat-conducting column 43 are respectively connected to the inner phase change material plate 41 and the outer phase change material plate 42.

[0074] In this technical solution, the heat-conducting column 43 can be used to exchange heat between the inner phase change material plate 41 and the outer phase change material plate 42, which facilitates the dissipation of heat generated by the lithium battery body 3.

[0075] In use, the inner phase change material plate 41 and the outer phase change material plate 42 can absorb the heat of the lithium battery body 3 and dissipate the heat to the channel between the inner frame 2 and the outer frame 1. At this time, the heat dissipation component 5 can dissipate the heat out of the outer frame 1.

[0076] The heat dissipation component 5 includes heat dissipation vents 51 and ventilation channels 52, and the side of the fixed frame plate 11 has multiple heat dissipation vents 51.

[0077] Both the connecting base plate 12 and the connecting cover plate 13 are provided with a plurality of longitudinally and transversely distributed ventilation channels 52, and the longitudinally and transversely distributed ventilation channels 52 intersect each other.

[0078] In this technical solution, the heat dissipation component 5 can be used to dissipate heat from the lithium battery body 3.

[0079] During use, the heat between the outer frame 1 and the inner frame 2 can be dissipated through the heat dissipation vent 51, and the heat at the connection between the bottom plate 12 and the connection cover plate 13 can be dissipated through the ventilation channel 52. The multiple heat dissipation channels can improve the heat dissipation effect of the lithium battery body 3 and extend the service life of the lithium battery.

[0080] A dustproof mesh 53 is connected to the heat dissipation vent 51.

[0081] In this technical solution, the dustproof net 53 can be used to prevent dust and other particles from entering the outer frame 1.

[0082] The inner frame 2 is provided with a plurality of partition plates 6, and the two ends of the partition plates 6 are respectively connected to the inner frame 2 in an adjustable manner through adjustment components 7.

[0083] The adjustment component 7 includes a connecting column 71, and two symmetrically distributed connecting columns 71 are connected to both sides of the partition plate 6.

[0084] The end of the connecting column 71 away from the partition plate 6 is connected to a limiting slider 72, and the upper and lower sides of the limiting slider 72 are slidably connected to the middle frame plate 21 and the side frame plate 22, respectively.

[0085] The limiting slider 72 is detachably connected to the connecting post 71 and the outside of the limiting slider 72 by locking screws 73.

[0086] The connecting post 71 has two threaded holes distributed vertically on its outer side. The middle frame plate 21 and the side frame plate 22 are each provided with multiple threaded grooves on their outer sides. The locking screw 73 is detachably connected to the limiting slider 72, the middle frame plate 21 and the side frame plate 22 through the threaded holes and threaded grooves respectively.

[0087] In this technical solution, the position of the separator 6 can be adjusted and locked using the adjustment component 7, which facilitates the installation of different lithium battery bodies 3.

[0088] In use, the partition plate 6 can be slidable using the connecting post 71 and the limiting slider 72. Then, the limiting slider 72 and the middle frame plate 21, the connecting post 71 and the side plate 22 can be connected by the locking screw 73 respectively, so that the positions of the limiting slider 72 and the partition plate 6 can be locked to adapt to different types of lithium battery bodies 3.

[0089] Both the upper and lower sides of the partition plate 6 are connected to follow-up phase change material plates 8.

[0090] In this technical solution, the heat can be easily discharged from the connecting base plate 12 and the connecting cover plate 13 by using the follower phase change material plate 8. At this time, the ventilation channel 52 can facilitate the heat discharge from the connecting base plate 12 and the connecting cover plate 13.

[0091] The inner phase change material plate 41, the outer phase change material plate 42, and the follower phase change material plate 8 are all composed of phase change materials, such as crystalline hydrated salts, molten salts, paraffin wax, fatty acids, etc., or composite phase change materials, such as combining the advantages of inorganic and organic materials, and improving performance through microencapsulation, porous adsorption and other technologies.

[0092] Phase change materials are substances that can undergo phase changes within a specific temperature range, such as from solid to liquid or from liquid to gas. Through the phase change process, they absorb or release a large amount of latent heat, thereby storing and releasing energy.

[0093] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A lithium battery heat dissipation packaging shell based on phase change material, comprising an outer frame (1), the outer frame (1) comprising a fixed frame plate (11), a connecting base plate (12), and a connecting cover plate (13), characterized in that, The lithium battery heat dissipation packaging shell based on phase change material further includes: an inner frame (2), which is connected to the inner side of the outer frame (1) and is used to install the lithium battery body (3). Phase change cooling component (4), the phase change cooling component (4) is connected to the inner and outer sides of the inner frame (2) respectively, and the phase change cooling component (4) is used to cool the lithium battery body (3); Heat dissipation component (5): The heat dissipation component (5) is provided on the outside of the inner frame (2), and the heat dissipation component (5) is used to dissipate heat from the lithium battery body (3).

2. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 1, characterized in that: The fixed frame plate (11) is connected to a connecting base plate (12) on its lower side, and a connecting cover plate (13) is detachably connected to the upper side of the fixed frame plate (11).

3. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 1, characterized in that: The inner frame (2) includes a middle frame plate (21), and the middle frame plate (21) is provided with side frame plates (22) on the upper and lower sides respectively. The middle frame plate (21) and the side frame plates (22) are connected by multiple vertical connecting plates (23). The vertical connecting plate (23) is connected to a plurality of horizontal connecting plates (24) on its outer side, and the end of the horizontal connecting plate (24) away from the vertical connecting plate (23) is connected to the inner side of the fixed frame plate (11).

4. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 3, characterized in that: The bottom of the lower frame plate (22) is connected to the top of the connecting base plate (12), and the top of the upper frame plate (22) is detachably connected to the connecting cover plate (13).

5. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 1, characterized in that: The phase change cooling component (4) includes an inner phase change material plate (41) and an outer phase change material plate (42). The inner phase change material plate (41) is connected to the inner side of the middle frame plate (21) and the side frame plate (22), and the outer phase change material plate (42) is connected to the outer side of the middle frame plate (21) and the side frame plate (22).

6. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 5, characterized in that: Both the intermediate frame plate (21) and the side frame plate (22) are provided with multiple mounting holes. A heat-conducting column (43) is provided in the mounting hole. The two ends of the heat-conducting column (43) are connected to the inner phase change material plate (41) and the outer phase change material plate (42) respectively.

7. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 1, characterized in that: The heat dissipation component (5) includes a heat dissipation port (51) and a ventilation channel (52), and the fixed frame plate (11) has multiple heat dissipation ports (51) on its side; Both the connecting base plate (12) and the connecting cover plate (13) are provided with a plurality of longitudinally and transversely distributed ventilation channels (52), and the longitudinally and transversely distributed ventilation channels (52) are interwoven with each other.

8. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 7, characterized in that: A dustproof mesh (53) is connected to the heat dissipation vent (51).

9. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 1, characterized in that: The inner frame (2) is provided with a plurality of partition plates (6) on its inner side, and the two ends of the partition plates (6) are respectively movably connected to the inner frame (2) through adjustment components (7); The adjustment component (7) includes connecting columns (71), and two symmetrically distributed connecting columns (71) are connected to both sides of the partition plate (6); The end of the connecting column (71) away from the partition plate (6) is connected to a limiting slider (72), and the upper and lower sides of the limiting slider (72) are slidably connected to the middle frame plate (21) and the side frame plate (22) respectively. The limiting slider (72) is detachably connected to the connecting post (71) and the outside of the limiting slider (72) respectively by locking screws (73).

10. The lithium battery heat dissipation packaging shell based on phase change material as described in claim 9, characterized in that: The partition plate (6) is connected to a follower phase change material plate (8) on both the upper and lower sides.

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