A charging device

Abstract

The utility model relates to the technical field of electronic products, and in particular to a charging device, including a shell, a circuit board, a battery and a flowable medium; the shell is provided with a first accommodating cavity and a second accommodating cavity which are isolated from each other, the battery is located in the first accommodating cavity, the circuit board is located in the second accommodating cavity, and the circuit board is electrically connected to the battery; the flowable medium is in the accommodating cavity and is in direct or indirect contact with the circuit board; at least a portion of the area on the shell corresponding to the position of the second accommodating cavity is a visible area, the visible area corresponds to the filling position of the flowable medium, and the circuit board and / or the flowable medium are visible through the visible area. The charging device provided by the utility model can solve the technical problem that it is difficult to observe the circuit board of the charging device by setting a visible area.

Description

[Technical field]

[0001] The utility model relates to the technical field of electronic products, in particular to a charging device. [Background technology]

[0002] With the development of smart phones, charging devices are becoming more and more popular as portable power sources. As the core of the charging device, the circuit board has functions such as charging management, battery management, current protection and temperature protection to ensure the safe, stable and efficient charging of the charging device. It is not easy to observe the working condition of the circuit board in the existing charging device, and it takes a long time to troubleshoot when the circuit board fails. In addition, the circuit board is not easy to visualize, which affects the aesthetics of the charging device. [Utility Model Content]

[0003] In order to solve the technical problem that the circuit board of the charging device is difficult to observe and has poor aesthetics, the utility model provides a charging device.

[0004] The solution to the technical problem of the utility model is to provide a charging device, including a shell, a circuit board, a battery and a flowable medium; the shell is provided with a first accommodating cavity and a second accommodating cavity which are isolated from each other, the battery is located in the first accommodating cavity, the circuit board is located in the second accommodating cavity, and the circuit board is electrically connected to the battery; the flowable medium is in the accommodating cavity and is in direct or indirect contact with the circuit board; at least a portion of the area on the shell corresponding to the position of the second accommodating cavity is a visible area, the visible area corresponds to the filling position of the flowable medium, and the circuit board and / or the flowable medium are visible through the visible area.

[0005] Preferably, it further comprises a receiving channel communicating with the second receiving cavity, wherein the receiving channel is arranged along the outer surface of the battery.

[0006] Preferably, a driving member is further provided on the accommodating channel, the driving member is electrically connected to the circuit board, and the driving member drives the flowable medium to flow in the first accommodating cavity and the accommodating channel.

[0007] Preferably, the flowable medium comprises a liquid medium and / or a solid medium.

[0008] Preferably, the flowable medium is in direct or indirect contact with the circuit board.

[0009] Preferably, the flowable medium includes at least one of a transparent medium, a translucent medium and an opaque medium.

[0010] Preferably, the flowable medium includes a liquid medium and a solid medium; the liquid medium is flowable in the containing cavity; and / or the solid medium is flowable in the liquid medium.

[0011] Preferably, the solid medium comprises solid powder or particles.

[0012] Preferably, the second accommodating cavity is a sealed cavity.

[0013] Preferably, an LED lamp and / or a display screen is further provided on the circuit board, and the LED lamp and / or the display screen is visible through the flowable medium and the visible area.

[0014] Compared with the prior art, the charging device provided by the utility model has the following advantages:

[0015] 1. The utility model provides a charging device, including a shell, a circuit board, a battery and a flowable medium; the shell is provided with a first accommodating cavity and a second accommodating cavity which are separated and arranged, the battery is located in the first accommodating cavity, the circuit board is located in the second accommodating cavity, and the circuit board is electrically connected to the battery; the flowable medium is in the accommodating cavity and is in direct or indirect contact with the circuit board; at least part of the area on the shell corresponding to the position of the second accommodating cavity is a visible area, the visible area corresponds to the filling position of the flowable medium, and the circuit board and / or the flowable medium are visible through the visible area. When the charging device is working, the flowable medium is located in the second accommodating cavity, wrapping and protecting the circuit board, and the user can observe the flowable medium at any time through the visible area, and observe the working state of the circuit board through the visible area and the flowable medium, and take timely measures when the working state of the circuit board changes, so that the charging device can work more stably and safely.

[0016] 2. The utility model provides a charging device, which also includes a receiving channel connected to the second receiving cavity. The receiving channel is arranged along the outer surface of the battery. By expanding the flow area of ​​the flowable medium, the heat dissipation efficiency of the flowable medium to the battery is improved and the visual effect is enhanced.

[0017] 3. The utility model provides a charging device, wherein a driving member is further provided on the accommodating channel, wherein the driving member is electrically connected to the circuit board, and the driving member drives the flowable medium to flow in the first accommodating cavity and the accommodating channel, so as to facilitate better flow of the flowable medium in the accommodating cavity.

[0018] 4. The utility model provides a charging device, wherein the flowable medium includes a liquid medium and / or a solid medium, which can be flexibly set according to user needs.

[0019] 5. The utility model provides a charging device, wherein the flowable medium is in direct or indirect contact with the circuit board, the circuit board can be observed through the flowable medium, and plays a role in heat dissipation.

[0020] 6. The utility model provides a charging device, wherein the flowable medium includes at least one of a transparent medium, a semi-transparent medium and an opaque medium, so as to facilitate flexible setting of the transparency of the flowable medium.

[0021] 7. The utility model provides a charging device, wherein the flowable medium includes a liquid medium and a solid medium; the liquid medium is flowable in the accommodating cavity; and / or the solid medium is flowable in the liquid medium, thereby making the setting of the flowable medium more diverse.

[0022] 8. In a charging device provided by the utility model, the solid medium includes solid powder or particles to improve the heat dissipation performance of the flowable medium.

[0023] 9. In a charging device provided by the utility model, the second accommodating chamber is a sealed chamber, which limits the flow range of the flowable medium and prevents the leakage of the flowable medium from affecting the operation of the charging device.

[0024] 10. The utility model provides a charging device, wherein the circuit board is also provided with an LED light and / or a display screen, the LED light and / or the display screen is visible through the flowable medium and the visible area, and the working status of the circuit board is displayed through the LED light and / or the display screen.

Brief Description of the Drawings

[0025] Figure 1 The first embodiment of the utility model provides a schematic diagram of the structure of a charging device Figure 1 .

[0026] Figure 2 The first embodiment of the utility model provides a schematic diagram of the structure of a charging device Figure 2 .

[0027] Figure 3 It is a cross-sectional schematic diagram of a charging device provided in the first embodiment of the utility model.

[0028] Figure 4 It is an exploded schematic diagram of a charging device provided in the first embodiment of the utility model.

[0029] Figure 5 The first embodiment of the utility model provides an exploded schematic diagram of a charging device housing and a support member.

[0030] Description of the accompanying drawings:

[0031] 1. Circuit board; 2. Shell; 3. Support member; 4. Sealing member; 5. Battery; 6. Wireless charging assembly; 7. Switch; 8. First accommodating chamber; 9. Second accommodating chamber; 10. Flowable medium;

[0032] 11. First mounting hole; 21. Perspective layer; 22. Filling port; 23. Filling piece; 24. Second mounting hole; 25. Protrusion; 26. Input port; 27. Output port; 28. Upper bottom surface; 29. ​​Lower bottom surface; 31. Mounting groove; 32. Third mounting hole; 33. Fourth mounting hole; 34. Fifth mounting hole; 61. Transmitter. [Specific implementation method]

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] It should be noted that the terms "first" and "second" etc. in the specification and claims of the present utility model are used to distinguish different objects rather than to describe a specific order.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0037] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0038] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] See also Figure 1 , Figure 3 and Figure 4 The first embodiment of the utility model provides a charging device for charging an electronic device, comprising a circuit board 1, a shell 2, a battery 5 and a flowable medium 10; the shell 2 is provided with a first accommodating chamber 8 and a second accommodating chamber 9 which are isolated from each other, the battery 5 is located in the first accommodating chamber 8, the circuit board 1 is located in the second accommodating chamber 9, and the circuit board 1 is electrically connected to the battery 5; the flowable medium 10 is in the accommodating chamber and directly or indirectly contacts the circuit board 1; at least a part of the area on the shell 2 corresponding to the position of the second accommodating chamber 9 is a visible area, and the visible area corresponds to the filling position of the flowable medium 10, so that the circuit board 1 can be directly observed from the outside through the visible area and the flowable medium 10. When using the charging device, the user can observe the working status of the flowable medium 10 and the circuit board 1 through the visible area, take timely measures when the working status of the circuit board 1 changes, and improve the aesthetics; in addition, the flowable medium 10 can play a role in heat dissipation in the accommodating chamber, thereby ensuring the safety and stability of the operation of the charging device.

[0040] Specifically, the circuit board 1 can manage and control the charging and discharging process to ensure the safety, reliability and efficiency of the charging device.

[0041] Furthermore, the battery 5 ensures the realization of the charging and discharging process of the charging device, and is placed parallel to the bottom surface of the shell 2 to achieve the effect of saving space.

[0042] Furthermore, a display screen can be provided on the circuit board 1, and the visible area and the display screen are provided on the same side, so that the display screen can be observed from the outside through the visible area. The display screen is used to display the working status and transmission information of the charging device to enhance the user experience.

[0043] Furthermore, an LED indicator light may be provided on the circuit board 1, so that the user can check the power information and working status of the charging device and improve the aesthetics.

[0044] Specifically, the shell 2 can be set as a partially / fully transparent shell, and the transparent area at least covers the circuit board 1, which is suitable for the circuit board 1 to be directly observed from the outside, and at the same time facilitates the user to observe the working conditions of the internal components of the charging device, thereby improving the ornamental value of the product.

[0045] Optionally, the shell 2 can be made of plastic, metal or other materials, or partially / entirely made of transparent rubber, or made of a mixture of transparent rubber and color powder, and the transparent rubber is a combination of one or more of transparent PE material, transparent PVC material, transparent TPE material, transparent TPU material or transparent PP material.

[0046] In this embodiment, a through hole is opened in the area of ​​the shell 2 corresponding to the circuit board 1, and a perspective layer 21 is provided to close the through hole to form a visible area or a semi-visible area, so that the perspective layer 21 is more tightly connected to the shell 2, and the perspective layer 21 remains flush with the surface of the shell 2, which is convenient for users to use.

[0047] Furthermore, the perspective layer 21 can be made of transparent adhesive material, or a mixture of transparent adhesive material and color powder, and the transparent adhesive material is a combination of one or more of transparent PE material, transparent PV C material, transparent TPE material, transparent TPU material or transparent PP material.

[0048] Specifically, the second accommodating chamber 9 is a sealed chamber to limit the flow range of the flowable medium 10 and prevent the leakage of the flowable medium 10 from affecting the operation of other components of the charging device.

[0049] Furthermore, a filling port 22 is opened on the shell 2, and the filling port 22 connects the second accommodating chamber 9 with the outside. The flowable medium 10 can be filled into the second accommodating chamber 9 through the filling port 22, and a filling piece 23 is provided to seal the filling port 22, so that the flowable medium 10 is in a closed space, thereby preventing the flowable medium 10 from flowing arbitrarily in the charging device and affecting the operation of the charging device.

[0050] Furthermore, the filling piece 23 may be made of materials such as silicone, rubber, and foam plastic to achieve sealing of the filling port 22 .

[0051] In this embodiment, the filling port 22 is opened on the perspective layer 21 , and the flowable medium 10 can be directly filled into the second accommodating cavity 9 through the filling port 22 , thereby saving process costs.

[0052] Specifically, the light transmittance of the perspective layer 21 is set to W. By limiting the light transmittance of the perspective layer 21 to 30%<W<95%, the perspective layer 21 can be adapted for the circuit board 1 to be directly observed from the outside, while balancing the cost of the product and avoiding unnecessary cost increase for higher light transmittance.

[0053] Furthermore, when the relationship 60%<W<90% is satisfied, the cost and light transmittance of the product can be balanced while the transparent layer 21 is preferably suitable for the circuit board 1 to be directly observed from the outside.

[0054] Furthermore, the flowable medium 10 includes at least one of a transparent medium, a semi-transparent medium and an opaque medium, and can be flexibly set according to user needs.

[0055] Specifically, the flowable medium 10 includes a liquid medium and / or a solid medium, which can be flexibly configured according to user needs.

[0056] Furthermore, the flowable medium 10 includes a liquid medium and a solid medium; the liquid medium is flowable in the containing cavity; and / or the solid medium is flowable in the liquid medium.

[0057] Furthermore, the solid medium includes solid powder or particles.

[0058] Specifically, the flowable medium 10 is in direct contact or indirect contact with the circuit board 1 , which is flexibly arranged according to the properties of the flowable medium 10 and the second accommodating cavity 9 .

[0059] Furthermore, a visible area may be provided corresponding to the battery 5 , and a heat dissipation medium may be filled in the first accommodation cavity 8 , so as to dissipate heat and cool the battery 5 , thereby improving the safety of the battery 5 .

[0060] Specifically, the charging device also includes a receiving channel connected to the second receiving cavity 9. The receiving channel is arranged along the outer surface of the battery 5. By expanding the flow area of ​​the flowable medium 10, the heat dissipation efficiency of the flowable medium 10 on the battery 5 is improved and the visual effect is enhanced.

[0061] Furthermore, the accommodating channel may be configured as a pipe formed on the shell 2 , or may be configured as a tubular component independent of the shell 2 .

[0062] Furthermore, a driving member is provided on the accommodating channel, and the driving member is electrically connected to the circuit board 1. The driving member drives the flowable medium 10 to flow in the first accommodating cavity 8 and the accommodating channel. By driving the flowable medium 10 to flow, the heat dissipation performance of the flowable medium 10 is improved, so that the circuit board 1 can dissipate heat better.

[0063] It should be noted that the flowable medium 10 has a high thermal conductivity and has thermal conductivity, so that the heat generated by the circuit board 1 during operation can be dissipated through the flowable medium 10 to achieve the effect of heat dissipation and cooling.

[0064] Furthermore, when the flowable medium 10 is set as a heat dissipation medium of insulating material, it is a combination of one or more grease-like liquids or thermally conductive silicone particles, and is in direct contact with the circuit board 1, while dissipating heat, avoiding affecting the operation of the circuit board 1.

[0065] In this embodiment, the flowable medium 10 is a heat dissipation medium made of insulating material.

[0066] Furthermore, when the flowable medium 10 is a non-insulating material, it is a combination of one or more of an electrolyte solution and a liquid metal, so as to avoid direct contact between the flowable medium 10 and the circuit board 1 .

[0067] Furthermore, a plurality of connected / unconnected sections may be separated in the second accommodating chamber 9 , so that the arrangement of the flowable medium 10 is more flexible.

[0068] Furthermore, a sealed interlayer or cavity is provided in the second accommodating cavity 9 to wrap the circuit board 1 so as to separate the circuit board 1 from the flowable medium 10 , thereby preventing the non-insulating flowable medium 10 from affecting the working safety of the circuit board 1 .

[0069] Furthermore, the accommodating cavity filled with the flowable medium 10 is separated from the outside and is a closed space that is not connected to the outside, so as to avoid leakage of the flowable medium 10 .

[0070] Furthermore, the color and filling position of the flowable medium 10 can be flexibly set to enhance the aesthetics and visual experience.

[0071] Specifically, the charging device also includes a support member 3, which is connected to the shell 2, and the circuit board 1 is fixedly connected to the support member 3. An installation groove 31 is opened on the support member 3. The circuit board 1 is located in the installation groove 31 and is observed from the outside. A gap is left between the circuit board 1 and the shell 2 to fill the flowable medium 10.

[0072] Furthermore, the circuit board 1 is fixedly connected to the support member 3 by welding, threaded connection or riveting.

[0073] Specifically, a seal 4 is arranged along the circumference of the circuit board 1 , and the other end of the seal 4 is connected to the housing 2 , and cooperates with the housing 2 and the visible area to form a sealed second accommodating cavity 9 to prevent the flowable medium 10 from leaking.

[0074] Furthermore, the seal 4 is an annular elastic member, which is deformed by extrusion after the shell 2 and the support member 3 are fixed to achieve the airtightness of the second accommodating chamber 9, thereby preventing the flowable medium 10 from flowing out of the second accommodating chamber 9 and interfering with the operation of other components of the charging device.

[0075] Optionally, the sealing member 4 may be made of materials such as silicone, rubber, and foam plastic.

[0076] For further information, see Figure 3 , Figure 4 and Figure 5 The housing 2 includes an upper bottom surface 28 and a lower bottom surface 29 that are opposite to each other. The support member 3 is located between the upper bottom surface 28 and the lower bottom surface 29 and is respectively engaged with the upper bottom surface 28 and the lower bottom surface 29 at the side.

[0077] Furthermore, the first accommodating cavity 8 is located between the supporting member 3 and the lower bottom surface 29 ; the second accommodating cavity 9 is located between the supporting member 3 and the upper bottom surface 28 , and a sealing effect is achieved through the sealing member 4 and the filling member 23 .

[0078] Furthermore, a first mounting hole 11 is opened on the circuit board 1, a second mounting hole 24 is opened on the shell 2, and a third mounting hole 32 is opened on the support member 3. Threaded members are arranged in the first mounting hole 11, the second mounting hole 24 and the third mounting hole 32, and the circuit board 1, the shell 2 and the support member 3 are fixed by threaded connection to improve the stability of the overall structure.

[0079] Furthermore, a protrusion 25 is provided on the edge of the shell 2, and a fourth mounting hole 33 is provided on the support member 3. When the shell 2 and the support member 3 are mounted, the protrusion 25 and the fourth mounting hole 33 are engaged with each other, so that the two are more firmly fixed.

[0080] See also Figure 2 and Figure 4 The housing 2 is also provided with an input port 26 and an output port 27 . The charging device supplies power to the battery 5 through the input port 26 and supplies power to the electronic device through the output port 27 .

[0081] Specifically, the charging device also includes a wireless charging component 6, which is located inside the housing 2 and electrically connected to the battery 5 to achieve the purpose of wireless charging of the electronic device, making the charging method more diverse.

[0082] Furthermore, a fifth mounting hole 34 is opened on the support member 3, the wireless charging component 6 is located in the fifth mounting hole 34 and is electrically connected to the circuit board 1, and the receiving end of the wireless charging component 6 is connected to the battery 5, so that discharge to the electronic device is achieved through the battery 5, and the charging and discharging process is controlled by the circuit board 1.

[0083] Furthermore, at least a partial area of ​​the shell 2 can be used as a transmitting end 61 of the wireless charging component 6. The electronic device can be electrically connected to the wireless charging component 6 through the shell 2. The user can charge the electronic device by placing the electronic device against the transmitting end 61 on the surface of the charging device, making the charging method more flexible and convenient, and improving the user experience.

[0084] Furthermore, the fifth mounting hole 34 is not connected to the mounting groove 31 to ensure that the second accommodating cavity 9 in the mounting groove 31 remains closed, thereby preventing the flowable medium 10 from leaking and affecting the operation of other components of the charging device.

[0085] Specifically, the charging device further includes a switch 7 , which is electrically connected to the circuit board 1 to control the working state of the circuit board 1 .

[0086] Compared with the prior art, the charging device provided by the utility model has the following advantages:

[0087] 1. The utility model provides a charging device, including a shell, a circuit board, a battery and a flowable medium; the shell is provided with a first accommodating cavity and a second accommodating cavity which are separated and arranged, the battery is located in the first accommodating cavity, the circuit board is located in the second accommodating cavity, and the circuit board is electrically connected to the battery; the flowable medium is in the accommodating cavity and is in direct or indirect contact with the circuit board; at least part of the area on the shell corresponding to the position of the second accommodating cavity is a visible area, the visible area corresponds to the filling position of the flowable medium, and the circuit board and / or the flowable medium are visible through the visible area. When the charging device is working, the flowable medium is located in the second accommodating cavity, wrapping and protecting the circuit board, and the user can observe the flowable medium at any time through the visible area, and observe the working state of the circuit board through the visible area and the flowable medium, and take timely measures when the working state of the circuit board changes, so that the charging device can work more stably and safely.

[0088] 2. The utility model provides a charging device, which also includes a receiving channel connected to the second receiving cavity. The receiving channel is arranged along the outer surface of the battery. By expanding the flow area of ​​the flowable medium, the heat dissipation efficiency of the flowable medium to the battery is improved and the visual effect is enhanced.

[0089] 3. The utility model provides a charging device, wherein a driving member is further provided on the accommodating channel, wherein the driving member is electrically connected to the circuit board, and the driving member drives the flowable medium to flow in the first accommodating cavity and the accommodating channel, so as to facilitate better flow of the flowable medium in the accommodating cavity.

[0090] 4. The utility model provides a charging device, wherein the flowable medium includes a liquid medium and / or a solid medium, which can be flexibly set according to user needs.

[0091] 5. The utility model provides a charging device, wherein the flowable medium is in direct or indirect contact with the circuit board, the circuit board can be observed through the flowable medium, and plays a role in heat dissipation.

[0092] 6. The utility model provides a charging device, wherein the flowable medium includes at least one of a transparent medium, a semi-transparent medium and an opaque medium, so as to facilitate flexible setting of the transparency of the flowable medium.

[0093] 7. The utility model provides a charging device, wherein the flowable medium includes a liquid medium and a solid medium; the liquid medium is flowable in the accommodating cavity; and / or the solid medium is flowable in the liquid medium, thereby making the setting of the flowable medium more diverse.

[0094] 8. In a charging device provided by the utility model, the solid medium includes solid powder or particles to improve the heat dissipation performance of the flowable medium.

[0095] 9. In a charging device provided by the utility model, the second accommodating chamber is a sealed chamber, which limits the flow range of the flowable medium and prevents the leakage of the flowable medium from affecting the operation of the charging device.

[0096] 10. The utility model provides a charging device, wherein the circuit board is also provided with an LED light and / or a display screen, the LED light and / or the display screen is visible through the flowable medium and the visible area, and the working status of the circuit board is displayed through the LED light and / or the display screen.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging device for charging an electronic device, characterized in that: It includes a housing, a circuit board, a battery and a flowable medium; The housing is provided with a first accommodating cavity and a second accommodating cavity which are separated and arranged, the battery is located in the first accommodating cavity, the circuit board is located in the second accommodating cavity, and the circuit board is electrically connected to the battery; the flowable medium is in the accommodating cavity and is in direct or indirect contact with the circuit board; At least a portion of the housing corresponding to the location of the second accommodating cavity is a visible area, the visible area corresponds to the filling position of the flowable medium, and the circuit board and / or the flowable medium are visible through the visible area.

2. A charging device as claimed in claim 1, characterized in that: It also includes a receiving channel communicated with the second receiving cavity, and the receiving channel is arranged along the outer surface of the battery.

3. A charging device as claimed in claim 2, characterized in that: The accommodating channel is also provided with a driving member, the driving member is electrically connected to the circuit board, and the driving member works to drive the flowable medium to flow in the first accommodating cavity and the accommodating channel.

4. A charging device as claimed in claim 1, characterized in that: The flowable medium includes a liquid medium and / or a solid medium.

5. A charging device as claimed in claim 1, characterized in that: The flowable medium is in direct or indirect contact with the circuit board.

6. A charging device as claimed in claim 1, characterized in that: The flowable medium includes at least one of a transparent medium, a translucent medium, and an opaque medium.

7. A charging device as claimed in claim 3, characterized in that: The flowable medium includes a liquid medium and a solid medium; the liquid medium is flowable in the containing cavity; and / or the solid medium is flowable in the liquid medium.

8. A charging device as claimed in claim 7, characterized in that: The solid medium includes solid powder or particles.

9. A charging device as claimed in claim 1, characterized in that: The second accommodating cavity is a sealed cavity.

10. A charging device as claimed in claim 1, characterized in that: The circuit board is also provided with an LED lamp and / or a display screen, and the LED lamp and / or the display screen is visible through the flowable medium and the visible area.

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