A phase change packaging structure and a portable charger

Abstract

This application relates to the field of charger structures, and discloses a phase change packaging structure and a portable charger, comprising: a packaging bag with an inner cavity inside; a support frame disposed within the inner cavity; and a phase change material layer filling the inner cavity and surrounding the support frame. The support frame has opposing first and second support surfaces, which are spaced apart and used to support the packaging bag respectively. Both the first and second support surfaces have exposed openings through which the phase change material layer contacts the inner wall of the packaging bag. This addresses the problem in existing technologies where heat transfer from the thicker surface of the packing box to the internal phase change material is slow, leading to poor thermal conductivity.

Description

Technical Field

[0001] This application relates to the field of charger structure technology, and more particularly to a phase change packaging structure and a portable charger. Background Technology

[0002] Power banks generate heat during charging and use, especially wireless power banks. This is because a large current (usually over 1A) flows through the wireless charging coil, which, according to Joule's law (P=I), causes the power to rise. 2 Wireless charging generates significant heat. Furthermore, hysteresis and eddy current losses occur during wireless charging, and this energy is also converted into heat. The coil is one of the largest heat sources in the entire system during wireless charging. Severe heat generation not only affects the performance and lifespan of electronic components but also poses safety risks during use. Therefore, power banks need to address the heat dissipation problem.

[0003] Existing power bank heat dissipation structures employ phase change materials (PCMs) for cooling. For example, patent CN208127935U, entitled "A Power Bank with Better Heat Dissipation Performance," discloses a design with packing boxes on the upper and lower sides of the inner shell, filled with PCM particles. This technical solution improves heat dissipation through PCMs. However, to achieve good support (high structural strength), the packing boxes are typically thick to prevent deformation and encapsulate the internal PCMs. Such a thick packing box structure leads to poor thermal conductivity, resulting in slow heat transfer from the thick packing box surface to the internal PCM layer.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a phase change packaging structure and a portable charger to solve the problem that the heat transfer from the surface of the thick packing box to the internal phase change material is slow, which leads to poor thermal conductivity.

[0006] The technical solution of this application is as follows:

[0007] On the one hand, this application proposes a phase change packaging structure, including:

[0008] A packaging bag, with an inner packaging cavity inside;

[0009] The support frame is disposed inside the encapsulation cavity;

[0010] A phase change material layer fills the encapsulation cavity and surrounds the support frame;

[0011] The support frame has a first support surface and a second support surface that are opposite to each other. The first support surface and the second support surface are spaced apart and are used to support the packaging bag respectively. Both the first support surface and the second support surface are provided with an exposed opening, through which the phase change material layer contacts the inner wall of the packaging bag.

[0012] Optionally, the first support surface is attached to the first inner wall surface of the packaging bag, the second support surface is attached to the second inner wall surface of the packaging bag, the first inner wall surface and the second inner wall surface inside the packaging bag are opposite to each other, and the phase change material layer is filled between the first support surface and the second support surface.

[0013] The above scheme makes the first support surface adhere to the first inner wall surface and the second support surface adhere to the second inner wall surface, thereby separating the first support surface and the second support surface on the upper and lower sides of the packaging bag. This makes the thickness of the packaging bag more stable in the vertical direction and ensures the support stability of the entire phase change packaging structure.

[0014] Optionally, the support frame includes:

[0015] Multiple first support plates are arranged at intervals, and the surfaces of the multiple first support plates are flush to form a first support surface;

[0016] Multiple second support plates are provided, which are staggered from multiple first support plates, and the surfaces of the multiple second support plates are flush to form a second support surface.

[0017] Multiple connecting plates, with their ends respectively connected to a first support plate and a second support plate that are set in a staggered manner.

[0018] Through the above scheme, the first and second support plates, staggered in the vertical direction, expose the deformable material layer in the space formed between the multiple spaced first support plates. This allows the deformable material layer to directly contact the packaging bag for heat absorption, thereby improving heat transfer efficiency. The similarly spaced second support plates also serve the same purpose. Furthermore, the staggered arrangement of the first and second support plates on the upper and lower sides further enhances heat conduction and provides vertical support.

[0019] Optionally, the first support plate includes: a plurality of first flat plates, which are arranged at intervals;

[0020] The first connecting plate extends along a first direction, and multiple first flat plates are staggered and arranged on both sides of the first connecting plate in a second direction.

[0021] The second support plate includes: a plurality of second flat plates, which are arranged at intervals and offset from the first flat plate;

[0022] The second connecting plate extends along the first direction, and multiple second flat plates are staggered on both sides of the second connecting plate in the second direction. The first connecting plate and the second connecting plate are staggered in the second direction.

[0023] The connecting plate includes: a plurality of spaced-apart first connecting vertical plates, the two ends of which are respectively connected to the edge of a first flat plate and a second connecting plate;

[0024] Multiple second connecting vertical plates are spaced apart, and the two ends of the multiple second connecting vertical plates are respectively connected to the edge of the second flat plate and the first connecting plate.

[0025] The above scheme, by configuring the first support plate as multiple first flat plates connected at intervals, creates openings between these plates, allowing the phase change material layer to directly contact the packaging bag. Similarly, by configuring the second support plate as multiple second flat plates connected at intervals, the same openings allow the phase change material layer to directly contact the packaging bag. Furthermore, the first connecting plate connects the multiple first flat plates on the left and right sides, and the second connecting plate connects the multiple second flat plates on the left and right sides, increasing the number of openings and achieving a more uniform heat absorption effect.

[0026] Optionally, the packaging bag includes a first outer sealing layer and a second outer sealing layer, the first outer sealing layer and the second outer sealing layer are sealed around their perimeter to form a packaging edge layer, and a packaging cavity is formed between the first outer sealing layer and the second outer sealing layer that are sealed around their perimeter.

[0027] The above method effectively seals the edges of the packaging bag, making the sealing process simpler and easier to manufacture.

[0028] Optionally, at least one edge of the support frame is provided with a support side plate, and the encapsulation side layer covers the support side plate;

[0029] A retaining groove is provided on the support side plate, and the edges of the first outer sealing layer and the second outer sealing layer are connected in the retaining groove.

[0030] The above solution uses a retaining groove to fix the packaging edge layer within the groove, thereby securing the internal support frame to the packaging bag and preventing the support frame from loosening.

[0031] Optionally, the packaging bag is an aluminum-plastic bag.

[0032] Through the above solution, aluminum-plastic bags have excellent thermal conductivity, thus transferring heat to the phase change material layer more efficiently when the phase change material layer is in direct contact with the aluminum-plastic bag.

[0033] Optionally, a thermally conductive metal sheet is provided on one side surface of the packaging bag.

[0034] The above method involves bonding a thermally conductive metal sheet to the outer layer of the packaging bag. During use, the thermally conductive metal sheet comes into contact with the heat-generating components, thereby enabling the heat from the heat-generating components to be dissipated more quickly.

[0035] Optionally, an infrared heat dissipation layer is provided on one side of the packaging bag.

[0036] The above method allows for heat dissipation through an infrared heat dissipation layer on the outer wall of the packaging bag. This enables the phase change packaging structure to act as a transfer medium, radiating the absorbed heat in the form of infrared rays (electromagnetic waves).

[0037] On the other hand, this application also proposes a portable charger, including a housing, a rechargeable battery disposed within the housing, and a phase change encapsulation structure as described above disposed on at least one side of the rechargeable battery.

[0038] Optionally, a wireless charging coil is also provided inside the housing, and the phase change encapsulation structure is disposed between the rechargeable battery and the wireless charging coil.

[0039] The beneficial effects of the phase change packaging structure and portable charger provided in this application are at least as follows: By encapsulating a phase change material layer inside a packaging bag and setting a support frame inside the packaging bag, the phase change material layer can wrap around the support frame. In use, due to the thinness of the packaging bag, heat transfer is more efficient through the exposed opening contacting the inner wall of the packaging bag, allowing the internal phase change material layer to absorb heat and enabling the heat from the heat-generating device to be absorbed more quickly, thus achieving better heat dissipation. Furthermore, the support frame not only stabilizes the outer packaging bag but also provides stable vertical support for the entire phase change packaging structure through the upper first support surface and the lower second support surface, preventing deformation. Moreover, the entire support frame can conduct heat within the packaging cavity, allowing the first and / or second support surfaces to conduct heat to the phase change material layer across the entire surface. This results in more uniform heat absorption in all areas of the phase change material layer, further improving heat dissipation. Attached Figure Description

[0040] Figure 1 This is a partial cross-sectional view of the main structure of a phase change packaging structure according to an embodiment of this application;

[0041] Figure 2 This is a partial cross-sectional view of another structure of a phase change packaging structure according to an embodiment of this application;

[0042] Figure 3 This is a front view of a support frame for a phase change packaging structure according to an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of another structure of the support frame for a phase change packaging structure according to an embodiment of this application;

[0044] Figure 5 This is a partial cross-sectional view of the detailed structure of a phase change packaging structure according to an embodiment of this application, wherein... Figure 5 Figure (a) is a partial cross-sectional view of the first structure. Figure 5 Figure (b) is a partial cross-sectional view of the second structure. Figure 5 Figure (c) is a partial cross-sectional view of the third structure;

[0045] Figure 6 This is a cross-sectional view of a portable charger according to an embodiment of this application, wherein... Figure 6 Figure (d) is a cross-sectional view of the first structure. Figure 6 Figure (e) is a cross-sectional view of the second structure. Figure 6 Figure (f) is a cross-sectional view of the third structure.

[0046] The labels in the diagram are as follows: 10, Phase change packaging structure; 100, Packaging bag; 110, First outer sealing layer; 120, Second outer sealing layer; 130, Packaging edge layer; 200, Support frame; 201, First support surface; 202, Second support surface; 210, Exposed opening; 220, Support side plate; 221, Retaining groove; 230, First support plate; 231, First flat plate; 232, First connecting plate; 240, Second support plate; 241, Second flat plate; 242, Second connecting plate; 250, Connecting plate; 251, First connecting vertical plate; 252, Second connecting vertical plate; 300, Phase change material layer; 400, Thermally conductive metal sheet; 410, Infrared heat dissipation layer; 20, Outer shell; 21, Rechargeable battery; 22, Wireless charging coil. Detailed Implementation

[0047] This application provides a phase change packaging structure. To make the purpose, technical solution, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0048] It should be noted that in annotations, leader lines with arrows represent non-solid areas such as holes and slots, or non-specific solid features such as higher-level features, or specific directions. Leader lines without arrows represent solid features or specific lower-level features.

[0049] When a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings and are for ease of description only, and should not be construed as limiting the scope of the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0050] Example 1

[0051] Existing thick packing box structures not only result in poor thermal conductivity, but also lead to slow heat transfer from the thick packing box surface to the internal phase change material layer. Furthermore, with a certain thickness of the phase change material layer throughout the packing box, heating occurs only on the top and bottom surfaces, causing uneven heating along the thickness direction. To improve and solve these problems, this embodiment proposes a phase change encapsulation structure that can absorb heat from the heating element, thereby facilitating heat dissipation.

[0052] like Figure 1 , Figure 2 As shown, this application also proposes a phase change packaging structure 10, mainly comprising: a packaging bag 100, a support frame 200, and a phase change material layer 300. The packaging bag 100 has an inner packaging cavity, the support frame 200 can be directly installed in the inner packaging cavity and is used for heat conduction, and the phase change material layer 300 fills the inner packaging cavity. The support frame 200 has opposing first support surfaces 201 and second support surfaces 202, which are spaced apart and respectively used to support the packaging bag 100. Both the first support surfaces 201 and the second support surfaces 202 have an exposure opening 210, through which the phase change material layer 300 contacts the inner wall of the packaging bag 100.

[0053] like Figure 1 , Figure 2As shown, by encapsulating the phase change material layer 300 inside the encapsulation bag 100 and providing a support frame 200 inside the encapsulation bag 100, the phase change material layer 300 can wrap around the support frame 200. In use, due to the thinness of the encapsulation bag 100, heat transfer is more efficient as the exposed opening 210 contacts the inner wall of the encapsulation bag 100. This allows the internal phase change material layer 300 to absorb heat, enabling the heat from the heat-generating device to be absorbed more quickly, thus achieving better heat dissipation. Furthermore, the support frame 200 not only keeps the outer packaging bag 100 in place, but also provides stable vertical support for the entire phase change packaging structure 10 through the first support surface 201 at the top and the second support surface 202 at the bottom, making it less prone to deformation; and the entire support frame 200 can conduct heat within the packaging cavity, allowing the first support surface 201 and / or the second support surface 202 to conduct heat to the phase change material layer 300. This results in more uniform heat absorption in all areas of the phase change material layer 300, which further improves heat dissipation.

[0054] In this embodiment, the phase change packaging structure 10 is described using a cuboid as an example. The direction along the long side of the phase change packaging structure 10 is considered the left-right direction, which is also the second direction. The direction along the wide side of the phase change packaging structure 10 is considered the front-back direction, which is also the first direction. The thickness direction of the phase change packaging structure 10 is considered the top-bottom direction. The specific details of each structure are as follows:

[0055] like Figure 1 , Figure 2 As shown, the packaging bag 100 can be rectangular and made of aluminum-plastic composite. The aluminum-plastic composite bag not only has excellent sealing performance after sealing, but also excellent thermal conductivity, thus transferring heat more efficiently to the internal phase change material layer 300 when it comes into direct contact with the aluminum-plastic composite bag.

[0056] like Figure 1 , Figure 2 As shown, the packaging bag 100 can be formed by bonding the first outer sealing layer 110 and the second outer sealing layer 120 together at the edges, similar to the structure of a shampoo pouch. The first outer sealing layer 110 is located on top, and the second outer sealing layer 120 is located on the bottom. The first outer sealing layer 110 and the second outer sealing layer 120 are sealed around their perimeter to form a packaging edge layer 130. An inner packaging cavity is formed between the sealed first outer sealing layer 110 and the second outer sealing layer 120. The support frame 200 and the phase change material layer 300 are encapsulated in the inner packaging cavity. The packaging bag 100 can be supported and has a certain thickness by the support frame 200. By sealing the edges of the first outer sealing layer 110 and the second outer sealing layer 120, it is possible to effectively prevent [something], and the sealing process is simpler and easier to manufacture.

[0057] like Figure 2 As shown, at least one edge (left and right sides) of the internal support frame 200 is provided with a support side plate 220. The encapsulation side layer 130 covers the support side plate 220. The support side plate 220 can achieve relative fixation with the encapsulation bag 100. In the specific structure, the support side plate 220 is provided with a fixing groove 221. Multiple fixing grooves 221 are spaced apart on the support side plate 220 in the front-back direction. The edge of the fixing groove 221 is open. When the edge of the first outer sealing layer 110 and the edge of the second outer sealing layer 120 are bonded, the edge of the first outer sealing layer 110 and the second outer sealing layer 120 are connected in the fixing groove 221. In this way, the encapsulation side layer 130 can be encapsulated and fixed in the fixing groove 221, thereby fixing the internal support frame 200 with the encapsulation bag 100 and preventing the support frame 200 from loosening.

[0058] like Figure 1 , Figure 3 , Figure 4 As shown, the support frame 200 specifically includes multiple first support plates 230, multiple second support plates 240, and multiple connecting plates 250. The first support plate 230 can be a single piece of plate (e.g., ...). Figure 3 (as shown) or composed of multiple spacers (such as) Figure 4 As shown, the second support plate 240 can also be a single plate or composed of multiple partition plates. Multiple first support plates 230 are arranged at intervals, with their surfaces flush to form a first support surface 201; multiple second support plates 240 are staggered from the multiple first support plates 230, with their surfaces flush to form a second support surface 202; the two ends of multiple connecting plates 250 are respectively connected to the staggered first support plates 230 and second support plates 240.

[0059] like Figure 3As shown, in the first structure, taking the first support plate 230 and the second support plate 240 as a single piece of plate as an example, the first support plate 230 is a single piece of plate extending forward and backward, and the second support plate 240 is a single piece of plate extending forward and backward. Multiple first support plates 230 and multiple second support plates 240 are staggered in the left-right direction and connected by vertically arranged connecting plates 250, thus forming a longwall structure. This creates an opening 210 between adjacent upper first support plates 230 and between adjacent lower second support plates 240. Therefore, through the staggered arrangement of the first and second support plates 230 in the vertical direction, the deformable material layer can be exposed in the space formed between the multiple spaced first support plates 230, allowing the deformable material layer to directly contact the encapsulation bag 100 for heat absorption, thereby improving heat transfer efficiency. Similarly, the spaced second support plates 240 also have this function. Furthermore, with better heat conduction, the first support plate 230 and the second support plate 240 on the upper and lower sides are staggered, which also achieves the function of upper and lower support.

[0060] like Figure 4As shown, in the second structure, the first support plate 230 is composed of multiple partition plates, and the second support plate 240 is composed of multiple partition plates, as an example. The first support plate 230 specifically includes: multiple first flat plates 231 and a first connecting plate 232. The multiple first flat plates 231 located at the top are arranged at intervals in the front-to-back direction. The first connecting plate 232 extends along the front-to-back direction, and the multiple first flat plates 231 are divided into two groups and respectively arranged on the left and right sides of the first connecting plate 232, with the first flat plates 231 on the left and right sides being staggered in the front-to-back direction. The second support plate 240 specifically includes: multiple second flat plates 241 and a second connecting plate 242. The multiple second flat plates 241 located at the bottom are arranged at intervals in the front-to-back direction, and the second connecting plate 242 extends along the front-to-back direction. The multiple second flat plates 241 are divided into two groups and respectively arranged on the left and right sides of the second connecting plate 242, with the second flat plates 241 on the left and right sides being staggered in the front-to-back direction, and the first connecting plate 232 and the second connecting plate 242 are staggered in the left-to-right direction. The connecting plate 250 includes multiple spaced-apart first connecting vertical plates 251 and multiple spaced-apart second connecting vertical plates 252. The two ends of the multiple first connecting vertical plates 251 are respectively connected to the edge of the first flat plate 231 and the second connecting plate 242, and the two ends of the multiple second connecting vertical plates 252 are respectively connected to the edge of the second flat plate 241 and the first connecting plate 232. In this way, the first flat plate 231 and the second flat plate are supported by the first connecting vertical plates 251 and the second flat plate, forming multiple support points for more stable support. By configuring the first support plate 230 in a form where multiple first flat plates 231 are connected at intervals, an exposure opening 210 is also formed between the multiple first flat plates 231, allowing the phase change material layer 300 to be exposed and directly contact the packaging bag 100. Similarly, by configuring the second support plate 240 in a form where multiple second flat plates 241 are connected at intervals, the phase change material layer 300 is also exposed and directly contacted with the packaging bag 100 through the exposure opening 210. In addition, the first connecting plate 232 connects the multiple first flat plates 231 on the left and right sides, and the second connecting plate 242 connects the multiple second flat plates 241 on the left and right sides, increasing the exposed opening 210 and achieving a more uniform heat absorption effect.

[0061] Furthermore, the staggered arrangement maintains support stability while allowing the phase change material layer 300 to continuously fill the entire encapsulation bag 100 without being interrupted by the support frame 200. The connecting plates 250 arranged at the top and bottom are in contact with the phase change material layer 300 in the thickness direction, thereby conducting heat to the phase change material layer 300 in the thickness direction, making the heat conduction more uniform and the heat absorption efficiency of the phase change material layer 300 higher.

[0062] like Figure 5As shown in Figure (a), a thermally conductive metal sheet 400 is disposed on one side surface of the packaging bag 100. The thermally conductive metal sheet 400 can be an aluminum plate, which can be fixed to one side of the packaging bag 100 by adhesive bonding. By adhesively bonding the thermally conductive metal sheet 400 to the outer layer of the packaging bag 100, the thermally conductive metal sheet 400 comes into contact with the heat-generating components during use, thereby enabling the heat from the heat-generating components to be dissipated more quickly.

[0063] like Figure 5 As shown in Figure (b), an infrared heat dissipation layer 410 is provided on one side of the packaging bag 100. Specifically, the infrared heat dissipation layer 410 can be coated on the surface of the thermally conductive metal sheet 400 (e.g., ...). Figure 5 As shown in Figure (c), it can also be directly coated on the surface of the encapsulation bag 100. Heat is dissipated through the infrared heat dissipation layer 410 on the outer wall of the encapsulation bag 100, allowing the phase change encapsulation structure 10 to act as a transfer medium, radiating the absorbed heat in the form of infrared rays (electromagnetic waves).

[0064] Example 2

[0065] like Figure 6 As shown, this application also proposes a portable charger, including a housing 20, a rechargeable battery 21 disposed inside the housing 20, and a phase change encapsulation structure 10 as described above disposed on at least one side of the rechargeable battery 21.

[0066] like Figure 6 As shown in Figure (d), if it is a regular power bank, the rechargeable battery 21 is a heat-generating device. The phase change packaging structure 10 can be fixedly covered on one or both sides of the rechargeable battery 21 to dissipate heat from the power bank's battery.

[0067] like Figure 6 As shown in Figures (e) and (f), in the case of a wireless power bank, a wireless charging coil 22 is also provided inside the outer casing 20 of the power bank, and the phase change encapsulation structure 10 is disposed between the rechargeable battery 21 and the wireless charging coil 22. When the wireless charging coil 22 is in use, it acts as the main heat-generating device, absorbing heat through the phase change encapsulation structure 10 to cool down the wireless charging coil 22. Figure 6 As shown in Figure (f), another phase change package structure 10 can also be provided on the side of the rechargeable battery 21 away from the wireless charging coil 22, so as to cool down the rechargeable battery 21.

[0068] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A phase change packaging structure, characterized in that, include: A packaging bag, wherein a packaging cavity is provided inside the packaging bag; A support frame is disposed within the encapsulation cavity; A phase change material layer, the phase change material layer filling the encapsulation cavity and surrounding the support frame; The support frame has a first support surface and a second support surface that are opposite to each other. The first support surface and the second support surface are spaced apart and are used to support the packaging bag respectively. Both the first support surface and the second support surface are provided with an exposed opening, through which the phase change material layer contacts the inner wall of the packaging bag.

2. The phase change packaging structure according to claim 1, characterized in that, The support frame includes: Multiple first support plates are arranged at intervals, and the surfaces of the multiple first support plates are flush to form the first support surface; Multiple second support plates are provided, and the multiple second support plates are staggered with the multiple first support plates at intervals. The surfaces of the multiple second support plates are flush with each other to form the second support surface. Multiple connecting plates, with their ends respectively connected to the first support plate and the second support plate, which are staggered.

3. The phase change packaging structure according to claim 2, characterized in that, The first support plate includes: a plurality of first flat plates, which are arranged at intervals; A first connecting plate extends along a first direction, and a plurality of first flat plates are staggered and arranged on both sides of the first connecting plate in a second direction. The second support plate includes: a plurality of second flat plates, which are arranged at intervals and offset from the first flat plate; The second connecting plate extends along the first direction, and a plurality of second flat plates are staggered on both sides of the second connecting plate in the second direction. The first connecting plate and the second connecting plate are staggered in the second direction. The connecting plate includes: a plurality of spaced-apart first connecting vertical plates, the two ends of which are respectively connected to the edge of the first flat plate and the second connecting plate; Multiple second connecting vertical plates are spaced apart, and the two ends of the multiple second connecting vertical plates are respectively connected to the edge of the second flat plate and the first connecting plate.

4. The phase change packaging structure according to claim 1, characterized in that, The packaging bag includes a first outer sealing layer and a second outer sealing layer. The first outer sealing layer and the second outer sealing layer are sealed around their perimeter to form a packaging edge layer. The inner packaging cavity is formed between the first outer sealing layer and the second outer sealing layer, which are sealed around their perimeter.

5. The phase change packaging structure according to claim 4, characterized in that, The support frame has a support side plate on at least one side edge, and the encapsulation side layer covers the support side plate; The support side plate is provided with a retaining groove, and the edges of the first outer sealing layer and the second outer sealing layer are connected in the retaining groove.

6. The phase change packaging structure according to claim 1, characterized in that, The packaging bag is an aluminum-plastic bag.

7. The phase change packaging structure according to claim 1, characterized in that, A thermally conductive metal sheet is provided on one side surface of the packaging bag.

8. The phase change packaging structure according to claim 1 or 7, characterized in that, An infrared heat dissipation layer is provided on one side of the packaging bag.

9. A portable charger, characterized in that, It includes an outer casing, in which a rechargeable battery is disposed, and at least one side of the rechargeable battery is provided with a phase change encapsulation structure as described in any one of claims 1-8.

10. The portable charger according to claim 9, characterized in that, The housing also contains a wireless charging coil, and the phase change encapsulation structure is disposed between the rechargeable battery and the wireless charging coil.

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