Wireless charging device and autonomous mobile device

Abstract

The utility model provides a wireless charging device and an autonomous mobile device. The wireless charging device comprises a housing; the circuit assembly is arranged in the shell; the wireless charging wire coil is arranged in the shell and is connected with the circuit assembly; and the insulating part is coated on the wireless charging wire coil, and the wireless charging wire coil is completely coated by the insulating part. According to the wireless charging device provided by the utility model, an electrical gap between the wireless charging wire coil and the circuit assembly or the shell does not need to be ensured to be at least 3mm, or a creepage distance does not need to be at least 5mm, so that the requirement of strengthening insulation can be met. Therefore, under the condition that the insulation problem is solved by arranging the insulating part, the circuit assembly and the wireless charging wire coil can be arranged more compactly, so that the circuit assembly and the wireless charging wire coil can be arranged at a closer distance, the overall size of the wireless charging device is reduced, and the use requirements of different scenes are met.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging, in particular to a wireless charging device and an autonomous mobile device. Background Art

[0002] In order for existing wireless power transmission coils to meet the reinforced insulation requirements of CE (European Conformity) or UL (Underwriters Laboratories) certifications, the coil must be at least 3mm away from other circuits or housings, and the creepage distance must be greater than 5mm. This will result in a larger overall size for the wireless charging device, making it difficult to meet the needs of applications that require a compact structure.

[0003] Therefore, how to design a small wireless charging device has become a problem that needs to be solved urgently. Utility Model Content

[0004] The utility model aims to at least solve the problem that the wireless charging device is large in size and cannot meet the needs of use in different scenarios.

[0005] To this end, a first aspect of the present utility model provides a wireless charging device.

[0006] A second aspect of the present invention provides an autonomous mobile device.

[0007] In view of this, the first aspect of the utility model proposes a wireless charging device, comprising: a shell; a circuit component, arranged in the shell; a wireless charging cable reel, arranged in the shell and connected to the circuit component; an insulating member, coated on the wireless charging cable reel, and the insulating member completely coats the wireless charging cable reel.

[0008] The wireless charging device provided by the utility model includes a housing, a circuit assembly, a wireless charging cable reel and an insulating member. The circuit assembly and the wireless charging cable reel are arranged in the housing, and the insulating member is coated on the wireless charging cable reel. It can be understood that the circuit assembly includes other electrical components and circuits, so that when the wireless charging cable reel is connected to the circuit assembly, the wireless charging device can work normally, wherein the circuit assembly can be connected to an external power supply. At the same time, since the present application coats the insulating member outside the wireless charging cable reel, the wireless charging cable reel can be insulated from the circuit assembly or the housing. Therefore, there is no need to ensure that the electrical clearance between the wireless charging cable reel and the circuit assembly or the housing is at least 3mm, or the creepage distance is at least 5mm, so as to achieve the requirement of enhanced insulation. Therefore, in the case where the present application solves the insulation problem by setting an insulating member, the present application can set the circuit assembly and the wireless charging cable reel more compactly, so that the two can be set closer, thereby reducing the overall volume of the wireless charging device, thereby meeting the use requirements of different scenarios.

[0009] The insulating member needs to completely cover the wireless charging cable reel to prevent the wireless charging cable reel from conducting electricity with the circuit component or the housing, thereby improving the insulation effect.

[0010] The wireless charging device provided by the utility model may also have the following additional technical features:

[0011] In some technical solutions, optionally, the insulating member includes at least one of an insulating strip, an insulating layer and an insulating sleeve.

[0012] In this technical solution, the insulating member includes at least one of an insulating strip, an insulating layer and an insulating sleeve, and different insulating members can be provided according to actual conditions to meet the needs of users. The types of insulating members are not limited thereto, and other types of insulating members may also be provided.

[0013] In some technical solutions, optionally, the insulating strip includes an insulating tape and a plastic strip, and the insulating tape or the plastic strip is wound around the outside of the wireless charging cable reel.

[0014] In this technical solution, the insulating strip can be a strip of insulating material such as an insulating tape and a plastic strip. Therefore, the strip of insulating material can be wound around the outside of the wireless charging cable reel. By winding with the strip of insulating material, the insulating material can be easily replaced, and the insulating strip and the wireless charging cable reel can be wound more tightly by winding, thereby ensuring the insulation effect.

[0015] In some technical solutions, optionally, the insulating member is an insulating sleeve, and the insulating sleeve is detachably mounted on the outside of the wireless charging cable reel.

[0016] In this technical solution, the insulating member is an insulating sleeve, and the insulating sleeve is detachably mounted on the outside of the wireless charging cable reel. The setting of the insulating sleeve is relatively convenient, which can improve the assembly efficiency, and the insulating effect of the insulating sleeve is also relatively good.

[0017] In some technical solutions, optionally, the insulating member is an insulating strip, and the number of layers of the insulating strip wound is greater than or equal to 3; or the thickness of the insulating member is greater than or equal to 0.7 mm.

[0018] In this technical solution, the insulating member is an insulating strip, and the number of layers of the insulating strip is greater than or equal to 3, or the thickness of the insulating member is greater than or equal to 0.7 mm. It is understandable that in the actual setting process, when the thickness of the insulating strip is thin, it is necessary to wind 3 layers to meet the safety requirements. However, when the thickness of the insulating member is thicker, it is necessary to meet the thickness of the insulating member greater than or equal to 0.7 mm. For example, when the insulation is an insulating strip, when the thickness of the insulating strip is 0.1 mm, it is necessary to wind the insulating strip in 3 layers. When the thickness of the insulating strip is 0.4 mm, it is necessary to wind the insulating strip in 2 layers, and the thickness of the two layers of insulating strip is 0.8 mm, which is greater than 0.7 mm.

[0019] In some technical solutions, optionally, the wireless charging cable reel includes a circular cable reel and a polygonal cable reel.

[0020] In this technical solution, the wireless charging cable reel can be set as a circular cable reel and a polygonal cable reel to meet the usage requirements of different scenarios.

[0021] In some technical solutions, optionally, the wireless charging cable reel is a rectangular cable reel.

[0022] In some technical solutions, optionally, the wireless charging cable reel is a square cable reel.

[0023] In some technical solutions, optionally, the wireless charging cable reel is a hexagonal cable reel.

[0024] In some technical solutions, optionally, the wireless charging cable reel is formed by winding a wire with a circular or polygonal cross-section.

[0025] In this technical solution, the cross section of the wireless charging cable drum can be formed by winding a circular or polygonal wire. The circular wire is easy to process, and the polygonal wire is more convenient and easy to fix when winding into the wireless charging cable drum.

[0026] In some technical solutions, optionally, the wireless charging cable reel is formed by winding a wire with a rectangular cross-section.

[0027] In some technical solutions, optionally, the wireless charging cable reel is wound by a wire with a square cross-section.

[0028] In some technical solutions, optionally, the electrical gap between the wireless charging cable reel and the circuit component is less than 3 mm; or the electrical gap between the wireless charging cable reel and the inner surface of the shell is less than 3 mm.

[0029] In this technical solution, the electrical gap between the wireless charging cable reel and the circuit component can be set to less than 3mm, or the electrical gap between the wireless charging cable reel and the inner surface of the shell can be set to less than 3mm. Compared with the related art, which requires the electrical gap between the wireless charging cable reel and the circuit component or the shell to be greater than 3mm, the present application can set the wireless charging cable reel and the circuit component more compactly, or the distance between the wireless charging cable reel and the inner surface of the shell can be set closer, thereby reducing the overall volume of the wireless charging device. It can be understood that since the metal shell has good heat dissipation, the shell of the wireless charging device can be set as a metal shell, but the metal shell is conductive. Therefore, the related art also requires that the electrical gap between the wireless charging cable reel and the shell meet the requirements. However, the present application does not need to ensure this requirement by setting an insulating member on the outer surface of the wireless charging cable reel, and can also ensure the insulation effect, thereby making the wireless charging cable reel and the circuit component or the shell closer, reducing the overall volume of the wireless charging device.

[0030] In some technical solutions, optionally, the shell is a non-metal shell or a metal shell.

[0031] In some technical solutions, optionally, a creepage distance between the wireless charging cable reel and the circuit component is less than 5 mm; or a creepage distance between the wireless charging cable reel and the inner surface of the shell is less than 5 mm.

[0032] In this technical solution, the creepage distance between the wireless charging cable reel and the circuit assembly can be set to less than 5mm, or the creepage distance between the wireless charging cable reel and the inner surface of the shell can be set to less than 5mm. Therefore, compared with the related art, which requires the creepage distance between the wireless charging cable reel and the circuit assembly or the shell to be greater than 5mm, the present application can set the wireless charging cable reel and the circuit assembly more compactly, or the distance between the wireless charging cable reel and the inner surface of the shell can be set closer, thereby reducing the overall volume of the wireless charging device. It can be understood that due to the good heat dissipation of the metal shell, the shell of the wireless charging device can be set as a metal shell, but the metal shell is conductive, therefore, the related art also needs to make the creepage distance between the wireless charging cable reel and the shell meet the requirements, and the present application can be provided with an insulating member on the outer surface of the wireless charging cable reel without the need to ensure this requirement, and can also ensure the insulation effect, so that the wireless charging cable reel and the circuit assembly or the shell are set closer, reducing the overall volume of the wireless charging device.

[0033] In some technical solutions, optionally, the wireless charging device further includes: a fixed bracket, which is arranged in the shell, and the wireless charging cable reel is arranged on the fixed bracket.

[0034] In this technical solution, the wireless charging device further includes a fixing bracket, which is arranged in the housing, and the wireless charging cable reel is arranged on the fixing bracket, so as to fix the wireless charging cable reel and prevent it from shifting.

[0035] In some technical solutions, optionally, the fixing bracket is integrally formed with the shell.

[0036] In some technical solutions, optionally, the fixing bracket is snapped into the shell.

[0037] In some technical solutions, optionally, an interface is provided on the shell, and the circuit component is connected to an external power source through the interface.

[0038] The second aspect of the present invention provides an autonomous mobile device, comprising: a wireless charging device as in any technical solution of the first aspect.

[0039] The autonomous mobile device provided by the utility model includes the wireless charging device in any technical solution of the first aspect. Since the autonomous mobile device includes the wireless charging device in any technical solution of the first aspect, the autonomous mobile device provided by the present application also has all the beneficial technical effects of the wireless charging device in any technical solution of the first aspect, which will not be repeated here.

[0040] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0042] Figure 1 A schematic diagram showing the structure of a wireless charging device according to an embodiment of the utility model is shown;

[0043] Figure 2 A cross-sectional view of a wireless charging device according to an embodiment of the utility model is shown;

[0044] Figure 3 A partial structural diagram of a wireless charging cable reel according to an embodiment of the utility model is shown;

[0045] Figure 4 The structure diagram of a wireless charging cable reel according to an embodiment of the utility model is shown.

[0046] in, Figures 1 to 4The corresponding relationship between the reference numerals and the component names is as follows:

[0047] 1. Shell, 2. Circuit assembly, 3. Wireless charging cable reel, 4. Insulator, 5. Fixed bracket. DETAILED DESCRIPTION

[0048] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0050] Refer to the following Figures 1 to 4 A wireless charging device according to some embodiments of the present invention is described.

[0051] According to an embodiment of the first aspect of the present utility model, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first aspect of the utility model proposes a wireless charging device, including: a shell 1; a circuit component 2, which is arranged in the shell 1; a wireless charging cable reel 3, which is arranged in the shell 1 and connected to the circuit component 2; an insulating member 4, which is coated on the wireless charging cable reel 3, and the insulating member 4 completely coats the wireless charging cable reel 3.

[0052] The wireless charging device provided by the utility model includes a housing 1, a circuit assembly 2, a wireless charging cable drum 3 and an insulating member 4. The circuit assembly 2 and the wireless charging cable drum 3 are arranged in the housing 1, and the insulating member 4 is coated on the wireless charging cable drum 3. It can be understood that the circuit assembly 2 includes other electrical components and circuits, so that when the wireless charging cable drum 3 is connected to the circuit assembly 2, the wireless charging device can work normally, wherein the circuit assembly 2 can be connected to an external power supply. At the same time, since the present application coats the insulating member 4 on the outside of the wireless charging cable drum 3, the wireless charging cable drum 3 can be insulated from the circuit assembly 2 or the housing 1. Therefore, there is no need to ensure that the electrical clearance between the wireless charging cable drum 3 and the circuit assembly 2 or the housing 1 is at least 3mm, or the creepage distance is at least 5mm, and the demand for enhanced insulation can be achieved, thereby meeting the relevant certification requirements of CE or UL. Therefore, in the case where the present application solves the insulation problem by setting the insulating member 4, the present application can set the circuit assembly 2 and the wireless charging cable drum 3 more compactly, so that the two can be set closer, thereby reducing the overall volume of the wireless charging device, thereby meeting the use requirements of different scenarios.

[0053] The insulating member 4 needs to completely cover the wireless charging cable reel 3 to prevent the wireless charging cable reel 3 from being electrically conductive with the circuit assembly 2 or the housing 1 , thereby improving the insulation effect. Figure 1 The arrangement of the middle insulating member 4 is only a schematic diagram, which does not reflect that the insulating member 4 only partially wraps the wireless charging cable reel 3 .

[0054] In some embodiments, optionally, the insulating member 4 is thinner, so after the wireless charging cable reel 3 is covered with the insulating member 4, the overall volume of the wireless charging cable reel 3 is not increased, thereby further reducing the overall volume of the wireless charging device.

[0055] In some embodiments, optionally, the insulating member 4 includes at least one of an insulating strip, an insulating layer and an insulating sleeve.

[0056] In this embodiment, the insulating member 4 includes at least one of an insulating strip, an insulating layer, and an insulating sleeve, and different insulating members 4 can be provided according to actual conditions to meet the needs of users. The type of insulating member 4 is not limited thereto, and other types of insulating members 4 may also be provided.

[0057] In some embodiments, optionally, the insulating strip includes an insulating tape and a plastic strip, and the insulating tape or the plastic strip is wound around the outside of the wireless charging cable reel 3 .

[0058] In this embodiment, the insulating strip can be a strip of insulating material such as an insulating tape and a plastic strip. Therefore, the strip of insulating material can be wound around the outside of the wireless charging cable reel 3. By winding with the strip of insulating material, the insulating material can be easily replaced, and the insulating strip and the wireless charging cable reel 3 can be wound more tightly by winding, thereby ensuring the insulation effect.

[0059] In some embodiments, optionally, the insulating tape is an insulating Mylar tape.

[0060] In some embodiments, optionally, the insulating member 4 is an insulating sleeve, and the insulating sleeve is detachably mounted on the outside of the wireless charging cable reel 3 .

[0061] In this embodiment, the insulating member 4 is an insulating sleeve, which is detachably mounted on the outside of the wireless charging cable reel 3 . The setting of the insulating sleeve is convenient, which can improve the assembly efficiency, and the insulating effect of the insulating sleeve is also good.

[0062] In some embodiments, optionally, the insulating member 4 is an insulating strip, and the number of layers of the insulating strip wound is greater than or equal to 3; or the thickness of the insulating member 4 is greater than or equal to 0.7 mm.

[0063] In this embodiment, the insulating member 4 is an insulating strip, and the number of layers of the insulating strip wound is greater than or equal to 3, or the thickness of the insulating member 4 is greater than or equal to 0.7 mm. It is understandable that in the actual setting process, when the thickness of the insulating strip is thin, it is only necessary to wind 3 layers to meet the safety requirements. However, when the thickness of the insulating member 4 is thicker, it is necessary to meet the thickness of the insulating member 4 greater than or equal to 0.7 mm. For example, when the insulation is an insulating strip, when the thickness of the insulating strip is 0.1 mm, it is necessary to wind the insulating strip in 3 layers. When the thickness of the insulating strip is 0.4 mm, it is necessary to wind the insulating strip in 2 layers, and the thickness of the two layers of insulating strip is 0.8 mm, which is greater than 0.7 mm.

[0064] In some embodiments, optionally, the wireless charging cable reel 3 includes a circular cable reel and a polygonal cable reel.

[0065] In this embodiment, the wireless charging cable reel 3 can be configured as a circular cable reel or a polygonal cable reel to meet the usage requirements of different scenarios.

[0066] In some embodiments, optionally, the wireless charging cable reel 3 is a rectangular cable reel.

[0067] In some embodiments, optionally, the wireless charging cable reel 3 is a square cable reel.

[0068] In some embodiments, optionally, the wireless charging cable reel 3 is a hexagonal cable reel.

[0069] In some embodiments, optionally, the wireless charging cable reel 3 is wound by a wire having a circular or polygonal cross section.

[0070] In this embodiment, the cross section of the wireless charging cable drum 3 can be formed by winding a circular or polygonal wire. The circular wire is easy to process, and the polygonal wire is more convenient and easy to fix when winding into the wireless charging cable drum 3.

[0071] In some embodiments, optionally, the wireless charging cable reel 3 is formed by winding a wire with a rectangular cross-section.

[0072] In some embodiments, optionally, the wireless charging cable reel 3 is wound by a wire having a square cross-section.

[0073] In some embodiments, optionally, the electrical gap between the wireless charging cable reel 3 and the circuit assembly 2 is less than 3 mm; or the electrical gap between the wireless charging cable reel 3 and the inner surface of the housing 1 is less than 3 mm.

[0074] In this embodiment, the electrical gap between the wireless charging cable tray 3 and the circuit component 2 can be set to be less than 3mm, or the electrical gap between the wireless charging cable tray 3 and the inner surface of the housing 1 can be set to be less than 3mm. Compared with the related art, which requires the electrical gap between the wireless charging cable tray and the circuit component or the housing to be greater than 3mm, the present application can set the wireless charging cable tray 3 and the circuit component 2 more compactly, or the distance between the wireless charging cable tray 3 and the inner surface of the housing 1 can be set closer, thereby reducing the overall volume of the wireless charging device. It can be understood that since the metal shell has good heat dissipation, the housing 1 of the wireless charging device can be set as a metal shell, but the metal shell has conductivity. Therefore, the related art also requires that the electrical gap between the wireless charging cable tray 3 and the housing 1 meet the requirements. However, the present application does not need to ensure this requirement by setting an insulating member 4 on the outer surface of the wireless charging cable tray 3, and can also ensure the insulation effect, thereby making the wireless charging cable tray 3 and the circuit component 2 or the housing 1 closer, reducing the overall volume of the wireless charging device.

[0075] In some embodiments, optionally, the housing 1 is a non-metal housing or a metal housing.

[0076] In some embodiments, optionally, a creepage distance between the wireless charging cable reel 3 and the circuit assembly 2 is less than 5 mm; or a creepage distance between the wireless charging cable reel 3 and the inner surface of the housing 1 is less than 5 mm.

[0077] In this embodiment, the creepage distance between the wireless charging cable tray 3 and the circuit component 2 can be set to less than 5mm, or the creepage distance between the wireless charging cable tray 3 and the inner surface of the housing 1 can be set to less than 5mm. Therefore, compared with the related art, which requires to ensure that the creepage distance between the wireless charging cable tray 3 and the circuit component 2 or the housing 1 is greater than 5mm, the present application can set the wireless charging cable tray 3 and the circuit component 2 more compactly, or the distance between the wireless charging cable tray 3 and the inner surface of the housing 1 can be set closer, thereby reducing the overall volume of the wireless charging device. It can be understood that due to the good heat dissipation of the metal shell, the housing 1 of the wireless charging device can be set as a metal shell, but the metal shell has conductivity, therefore, the related art also needs to make the creepage distance between the wireless charging cable tray 3 and the housing 1 meet the requirements, and the present application can be provided with an insulating member 4 on the outer surface of the wireless charging cable tray 3 without ensuring this requirement, and can also ensure the insulation effect, so that the wireless charging cable tray 3 and the circuit component 2 or the housing 1 are set closer, reducing the overall volume of the wireless charging device.

[0078] In some embodiments, optionally, the wireless charging device further includes: a fixing bracket 5 disposed in the housing 1 , and the wireless charging cable reel 3 is disposed on the fixing bracket 5 .

[0079] In this embodiment, the wireless charging device further includes a fixing bracket 5. The fixing bracket 5 is disposed in the housing 1, and the wireless charging cable reel 3 is disposed on the fixing bracket 5, so as to fix the wireless charging cable reel 3 to prevent it from shifting.

[0080] In some embodiments, optionally, the fixing bracket 5 is integrally formed with the housing 1 .

[0081] In some embodiments, optionally, the fixing bracket 5 is snap-fitted into the housing 1 .

[0082] In some embodiments, optionally, an interface is further provided on the housing 1, and the circuit component 2 is connected to an external power source through the interface.

[0083] In some embodiments, optionally, the wireless charging device further includes a magnetic core, and the wireless charging cable reel 3 can be disposed on the magnetic core.

[0084] Specifically, the wireless charging cable reel 3 can be first set on the fixed bracket 5, and then the entire wireless charging cable reel 3 can be set on the magnetic core. Alternatively, the wireless charging cable reel 3 can be set on the magnetic core. Alternatively, after the wireless charging cable reel 3 is set on the magnetic core, the entire wireless charging cable reel 3 can be set on the fixed bracket 5. The specific setting can be based on actual needs.

[0085] In some embodiments, the magnetic core is optionally composed of multiple ferrite magnets. For example, Figure 4 The 16 squares in the middle represent 16 ferrite magnets.

[0086] A second aspect of the present invention provides an autonomous mobile device, comprising: a wireless charging device as in any one of the embodiments of the first aspect.

[0087] The autonomous mobile device provided by the utility model includes the wireless charging device in any one of the embodiments of the first aspect. Since the autonomous mobile device includes the wireless charging device in any one of the embodiments of the first aspect, the autonomous mobile device provided by the present application also has all the beneficial technical effects of the wireless charging device in any one of the embodiments of the first aspect, which will not be repeated here.

[0088] In some embodiments, optionally, the autonomous mobile device includes an autonomous mobile robot (AMR) or an automated guided vehicle (AGV).

[0089] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wireless charging device, characterized in that: include: case; A circuit assembly is disposed in the housing; A wireless charging cable reel is disposed in the housing and connected to the circuit assembly; An insulating member is coated on the wireless charging cable reel, and the insulating member completely coats the wireless charging cable reel.

2. The wireless charging device according to claim 1, characterized in that: The insulating member includes at least one of an insulating strip, an insulating layer and an insulating sleeve.

3. The wireless charging device according to claim 2, characterized in that: The insulating strip includes an insulating tape and a plastic strip, and the insulating tape or the plastic strip is wound outside the wireless charging cable reel.

4. The wireless charging device according to claim 2, characterized in that: The insulating member is the insulating sleeve, and the insulating sleeve is detachably mounted on the outside of the wireless charging cable reel.

5. The wireless charging device according to claim 2, characterized in that: The insulating member is the insulating strip, and the number of layers of the insulating strip wound is greater than or equal to 3; or The thickness of the insulating member is greater than or equal to 0.7 mm.

6. The wireless charging device according to claim 1, characterized in that: The wireless charging cable reel includes a circular cable reel and a polygonal cable reel; and / or The wireless charging cable reel is formed by winding a wire with a circular or polygonal cross section.

7. The wireless charging device according to claim 1, characterized in that: The electrical clearance between the wireless charging cable reel and the circuit assembly is less than 3 mm; or The electrical gap between the wireless charging cable reel and the inner surface of the housing is less than 3 mm.

8. The wireless charging device according to claim 1, characterized in that: The creepage distance between the wireless charging cable reel and the circuit assembly is less than 5 mm; or The creepage distance between the wireless charging cable reel and the inner surface of the housing is less than 5 mm.

9. The wireless charging device according to any one of claims 1 to 8, characterized in that: Also includes: A fixed bracket is arranged in the shell, and the wireless charging cable reel is arranged on the fixed bracket.

10. An autonomous mobile device, characterized in that: include: The wireless charging device according to any one of claims 1 to 9.

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