Charging device and wireless charging system

Abstract

The utility model discloses a charging device and a wireless charging system. The charging device of the utility model includes a first shell and a transmitting coil. The first shell includes a first cavity for accommodating an electronic device, and the first cavity includes an opening for allowing the electronic device to pass through. There are multiple transmitting coils, at least one transmitting coil is arranged around the first cavity, and at least one transmitting coil is arranged at the bottom of the first cavity, and the transmitting coil is used to wirelessly charge the electronic device. When the electronic device is placed in the first cavity of the charging device, the charging device will select the transmitting coil closest to the receiving coil to charge the electronic device according to the setting position of the receiving coil of the electronic device. In this way, the demand for wireless charging of electronic devices of various models can be met.

Description

Technical Field

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

[0002] With the development of science and technology, various electronic devices have emerged, and the charging methods of electronic devices are also diverse. Wireless charging has become one of the common charging methods. Wireless charging is generally completed by wirelessly connecting the transmitting coil of the charging device and the receiving coil of the electronic device. In the prior art, since the internal receiving coils of electronic devices of different models are set in different positions, the same charging device cannot perform wireless charging on electronic devices of different models well. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a charging device that can match different types of electronic devices for wireless charging.

[0004] The utility model also provides a wireless charging system having the above charging device.

[0005] According to the first aspect of the present invention, the charging device includes a first shell and a transmitting coil. The first shell includes a first cavity for accommodating an electronic device, and the first cavity includes an opening for allowing the electronic device to pass through. There are multiple transmitting coils, at least one transmitting coil is arranged around the first cavity, and at least one transmitting coil is arranged at the bottom of the first cavity, and the transmitting coil is used to wirelessly charge the electronic device.

[0006] The charging device according to the embodiment of the utility model has at least the following beneficial effects: when the electronic device is placed in the first cavity of the charging device, no matter whether the receiving coil of the electronic device is set in the middle or at both ends, at least one transmitting coil is close enough to the receiving coil, so that wireless charging can be performed well. In this way, the demand for wireless charging of various types of electronic devices can be met.

[0007] According to some embodiments of the utility model, the charging device further comprises a control board. The control board is arranged in the first housing, the control board is electrically connected to the transmitting coil, and the control board is used to control the start and stop of each transmitting coil.

[0008] According to some embodiments of the present invention, the charging device further comprises a radiator. The radiator is arranged in the first housing, and the radiator and the control board are arranged at a distance along the height direction of the first housing.

[0009] According to some embodiments of the present invention, the diameter of the first cavity is more than twice the diameter of the electronic device. And / or, the maximum diameter of the transmitting coil arranged at the bottom of the first cavity is greater than the diameter of the first cavity, and the transmitting coil arranged at the bottom of the first cavity is coaxially arranged with the first cavity.

[0010] According to some embodiments of the present utility model, the charging device includes a battery, the battery is fixed in the first shell, and the battery is electrically connected to the transmitting coil; and / or, the charging device includes a connecting wire, one end of the connecting wire is electrically connected to the transmitting coil, and the other end of the connecting wire is used to connect to an external power supply.

[0011] According to some embodiments of the present invention, at least two transmitting coils surround the outer circumference of the first cavity, and the multiple transmitting coils surrounding the outer circumference of the first cavity are spaced apart and distributed in the height direction of the first cavity.

[0012] According to some embodiments of the present invention, the first shell includes an inner shell and an outer shell, and the inner shell is divided into a first cavity and a second cavity from top to bottom in the height direction. The transmitting coil is arranged in the interlayer between the inner shell and the outer shell, and / or the transmitting coil is arranged in the second cavity.

[0013] According to the wireless charging system of the second embodiment of the utility model, the wireless charging system includes the charging device of any one of the first embodiment, and also includes an electronic device. The electronic device includes a second housing and a receiving coil, the receiving coil is arranged in the second housing, and the receiving coil is used to wirelessly connect to the transmitting coil, so that the charging device wirelessly charges the electronic device.

[0014] According to the wireless charging system of the second embodiment of the utility model, there are at least the following beneficial effects: when the electronic device is placed in the first cavity of the charging device, no matter whether the receiving coil of the electronic device is set in the middle or at both ends, there will be at least one transmitting coil close enough to the receiving coil, so that wireless charging can be performed well. In this way, the demand for wireless charging of various types of electronic devices can be met.

[0015] According to some embodiments of the utility model, the opening is located at the top of the first cavity, and when the bottom end of the second shell abuts against the bottom wall of the first cavity, the receiving coil is located in the first cavity. The second shell is divided into three sections along the axial direction, and the three sections of the second shell are respectively a head section, a middle section and a tail section, and the receiving coil is arranged in the middle section.

[0016] According to some embodiments of the utility model, the opening is located at the top of the first cavity, and when the bottom end of the second shell abuts against the bottom wall of the first cavity, the receiving coil is located in the first cavity. The second shell is divided into three sections along the axial direction, and the three sections of the second shell are respectively a head section, a middle section and a tail section, and the receiving coil is arranged in the head section or the tail section. When the second shell is placed in the first cavity, the section where the receiving coil is located is closer to the bottom of the first cavity than the other two sections.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A three-dimensional diagram of a wireless charging system according to a second embodiment of the present invention;

[0020] Figure 2 A three-dimensional diagram of the internal structure of a charging device according to an embodiment of the first aspect of the utility model;

[0021] Figure 3 is a cross-sectional view of a first embodiment of the wireless charging system of the present utility model;

[0022] Figure 4 It is a cross-sectional view of a second embodiment of the wireless charging system of the present invention.

[0023] Figure numerals: wireless charging system 100, charging device 101, electronic device 102, first cavity 103, opening 104, transmitting coil 201, first shell 202, receiving coil 301, inner shell 302, outer shell 303, head section 304, middle section 305, tail section 306, control board 307, radiator 308, battery 309, second cavity 310, second shell 311. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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.

[0029] refer to Figures 1 to 3 According to the first aspect of the present invention, the charging device 101 includes a first shell 202 and a transmitting coil 201. The first shell 202 includes a first cavity 103 for accommodating the electronic device 102, and the first cavity 103 includes an opening 104 for allowing the electronic device 102 to pass through. There are multiple transmitting coils 201, at least one transmitting coil 201 is arranged around the first cavity 103, and at least one transmitting coil 201 is arranged at the bottom of the first cavity 103, and the transmitting coil 201 is used to wirelessly charge the electronic device 102. When the electronic device 102 is placed in the first cavity 103 of the charging device 101, no matter whether the receiving coil 301 of the electronic device 102 is arranged in the middle or at both ends, there will be at least one transmitting coil 201 close enough to the receiving coil 301, so that wireless charging can be performed well. In this way, the demand for wireless charging of various types of electronic devices 102 can be met.

[0030] For example, if the receiving coil 301 of the electronic device 102 of model A is set in the middle section 305, when it is placed in the first cavity 103, the transmitting coil 201 arranged around the first cavity 103 is close to the receiving coil of the electronic device 102, and charging can be performed well; if the receiving coil 301 of the electronic device 102 of model B is set at both ends, when it is placed in the first cavity 103, the end with the receiving coil 301 is placed at the bottom of the first cavity 103, and the transmitting coil 201 arranged at the bottom of the first cavity 103 is close enough to the receiving coil of the electronic device 102, and charging can be performed well.

[0031] It should be noted that in some embodiments of the present invention, the charging device 101 is configured as a pen holder, and the electronic device 102 is an electronic pen. In some embodiments of the present invention, the charging device 101 can also wirelessly charge small devices such as mobile phones and tablets.

[0032] refer to Figure 3 and Figure 4 In some embodiments of the present invention, the charging device 101 further includes a control board 307. The control board 307 is disposed in the first housing 202, and the control board 307 is electrically connected to the transmitting coil 201. The control board 307 is used to control the start and stop of each transmitting coil 201. As the information center of the charging device 101, the control board 307 can control each transmitting coil 201, turn off the transmitting coil 201 that is not involved in charging, and reduce unnecessary energy loss.

[0033] refer to Figure 3 In some embodiments of the present utility model, the charging device 101 further includes a radiator 308. The radiator 308 is disposed in the first housing 202, and the radiator 308 and the control board 307 are spaced apart in the height direction of the first housing 202. The radiator 308 can cool the first housing 202, and the precision component in the first housing 202 is the control board 307, so the radiator 308 is spaced apart from the control board 307, and the control board 307 is cooled first, ensuring that the control board 307 runs within a suitable temperature and improving its performance. In some embodiments of the present utility model, the radiator 308 uses an air-cooled radiator 308, specifically, a fan is spaced apart below the control board 307, and the air-cooled heat dissipation has high heat dissipation efficiency, a simple structure, and convenient maintenance. In some embodiments of the present utility model, the radiator 308 can also use structures such as heat sinks and liquid cooling devices.

[0034] refer to Figure 1 and Figure 3In some embodiments of the present invention, the diameter of the first cavity 103 is more than twice the diameter of the electronic device 102. And / or, the maximum diameter of the transmitting coil 201 disposed at the bottom of the first cavity 103 is greater than the diameter of the first cavity 103, and the transmitting coil 201 disposed at the bottom of the first cavity 103 is coaxially arranged with the first cavity 103. The diameter of the first cavity 103 is more than twice the diameter of the electronic device 102, so that the first cavity 103 can accommodate multiple electronic devices 102; the maximum diameter of the transmitting coil 201 disposed at the bottom of the first cavity 103 is greater than the diameter of the first cavity 103, and the transmitting coil 201 disposed at the bottom of the first cavity 103 is coaxially arranged with the first cavity 103, so as to ensure that the electronic devices 102 placed in the first cavity 103 are within the range of the transmitting coil 201 in the vertical direction, thereby improving the charging reliability of the charging device.

[0035] refer to Figure 3 and Figure 4 In some embodiments of the present invention, the charging device 101 includes a battery 309, the battery 309 is fixed in the first shell 202, and the battery 309 is electrically connected to the transmitting coil 201; and / or, the charging device 101 includes a connecting wire, one end of the connecting wire is electrically connected to the transmitting coil 201, and the other end of the connecting wire is used to connect to an external power source. In this way, the use scenario of the charging device 101 can be improved. The built-in battery 309 can be set so that the charging device 101 can be placed in any required scene, and the connecting wire can be set to connect to an external power source to solve the battery life problem. Both modes can also be included. When the wired mode is used, the connecting wire will also charge the battery 309. When the use scenario needs to be changed and it is inconvenient to use the wired mode, the connecting wire can be removed and the battery life of the built-in battery 309 can be used for continued use.

[0036] It should be noted that the reference Figure 3 In some embodiments of the utility model, the battery 309 is arranged between the radiator 308 and the control board 307. Such an arrangement can make the structure more compact and reduce the size of the first shell 202. At the same time, the battery 309 can also be well cooled by the radiator 308 during use, thereby improving safety.

[0037] refer to Figure 2 and Figure 3In some embodiments of the present invention, at least two transmitting coils 201 surround the outer circumference of the first cavity 103, and the multiple transmitting coils 201 surrounding the outer circumference of the first cavity 103 are spaced apart in the height direction of the first cavity 103. Compared with designing an integral transmitting coil 201, the multiple transmitting coils 201 can also avoid the problem of overheating of the transmitting coil 201 during use. The multiple transmitting coils 201 can also enable the charging device 101 to charge multiple electronic devices 102, and each transmitting coil 201 can charge different electronic devices 102, thereby improving the charging efficiency.

[0038] refer to Figure 3 and Figure 4 In some embodiments of the present invention, the first shell 202 includes an inner shell 302 and an outer shell 303, and the inner shell 302 is divided into a first cavity 103 and a second cavity 310 from top to bottom in the height direction. The transmitting coil 201 is arranged in the interlayer between the inner shell 302 and the outer shell 303, and / or, the transmitting coil 201 is arranged in the second cavity 310. The form of inner shell plus outer shell can make the first shell 202 have diversity in design. The inner shell 302 uses a light, radio-friendly, and poorly shielded material, such as glass, plastic, etc.; and the outer shell can use a wear-resistant, highly processable, and beautiful material, such as bamboo, ceramic, and ABS plastic. In short, the selection becomes more, and the plasticity of the charging device 101 is improved. The interlayer between the inner shell 302 and the outer shell 303 and the design of the second cavity 310 can place the transmitting coil 201, the radiator 308, the control board 307 and other components therein, thereby improving the product's aesthetics.

[0039] refer to Figure 1 and Figure 3 According to the wireless charging system 100 of the second aspect of the present utility model, it includes the charging device 101 of any one of the first aspect of the embodiment, and also includes an electronic device 102. The electronic device 102 includes a second shell 311 and a receiving coil 301, and the receiving coil 301 is arranged in the second shell 311. The receiving coil 301 is used to wirelessly connect with the transmitting coil 201, so that the charging device 101 can wirelessly charge the electronic device 102. When the electronic device 102 is placed in the first cavity 103 of the charging device 101, no matter whether the receiving coil 301 of the electronic device 102 is set in the middle or at both ends, there will be at least one transmitting coil 201 close enough to the receiving coil 301, so that wireless charging can be performed well. In this way, the demand for wireless charging of electronic devices 102 of various models can be met.

[0040] It should be noted that in some embodiments of the present invention, the charging device 101 and the electronic device 102 will also be connected by wireless signals, specifically, by Bluetooth or 2.4G signal connection. After the charging of the electronic device 102 is completed, the electronic device 102 will feedback a charging completion signal to the charging device 101 through the wireless signal connection. After receiving the signal, the charging device 101 stops charging the electronic device 102, thereby improving safety and reducing unnecessary energy loss.

[0041] refer to Figure 3 In some embodiments of the present invention, the opening 104 is located at the top of the first cavity 103, and when the bottom end of the second shell 311 abuts against the bottom wall of the first cavity 103, the receiving coil 301 is located in the first cavity 103. The second shell 311 is divided into three sections along the axial direction, and the three sections of the second shell 311 are respectively a head section 304, a middle section 305 and a tail section 306, and the receiving coil 301 is arranged in the middle section 305. Since at least one transmitting coil 201 is arranged around the first cavity 103, the receiving coil 301 is arranged in the middle section 305, so that when the electronic device 102 is placed in the first cavity 103, no matter what posture it is in, the distance between the receiving coil 301 and the transmitting coil 201 is moderate, which can improve the wireless connection effect and charging efficiency.

[0042] refer to Figure 4 In some embodiments of the present invention, the opening 104 is located at the top of the first cavity 103, and when the bottom end of the second shell 311 abuts against the bottom wall of the first cavity 103, the receiving coil 301 is located in the first cavity 103. The second shell 311 is divided into three sections along the axial direction, and the three sections of the second shell 311 are respectively the head section 304, the middle section 305 and the tail section 306, and the receiving coil 301 is arranged in the head section 304 or the tail section 306. When the second shell 311 is placed in the first cavity 103, the section where the receiving coil 301 is located is closer to the bottom of the first cavity 103 than the other two sections. At least one transmitting coil 201 is arranged at the bottom of the first cavity 103, and the receiving coil 301 is arranged at the head section 304 or the tail section 306. Then, when the second shell 311 is placed in the first cavity 103, one end of the receiving coil 301 is closer to the bottom of the first cavity 103 than the end where the receiving coil 301 is not arranged. Therefore, no matter what posture the electronic device 102 is in the first cavity 103, the distance between the transmitting coil 201 and the receiving coil 301 is very close, which greatly improves the charging efficiency.

[0043] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A charging device, characterized in that: The charging device comprises: A first housing, wherein the first housing is formed with a first cavity for accommodating the electronic device and an opening communicating with the first cavity, wherein the opening is used for the electronic device to enter or leave the first cavity; A transmitting coil, wherein a plurality of transmitting coils are provided, at least one of the transmitting coils is provided around the first cavity, and at least one of the transmitting coils is provided at the bottom of the first cavity; The transmitting coil is used for wirelessly charging the electronic device.

2. The charging device according to claim 1, characterized in that: The charging device also includes: A control board is disposed in the first shell, the control board is electrically connected to the transmitting coil, and the control board is used to control the start and stop of each transmitting coil.

3. The charging device according to claim 2, characterized in that: The charging device also includes: A radiator is disposed in the first shell, and the radiator and the control board are spaced apart along a height direction of the first shell.

4. The charging device according to claim 1, characterized in that: The diameter of the first cavity is more than twice the diameter of the electronic device; and / or, The maximum diameter of the transmitting coil disposed at the bottom of the first cavity is greater than the diameter of the first cavity, and the transmitting coil disposed at the bottom of the first cavity is coaxially disposed with the first cavity.

5. The charging device according to claim 1, characterized in that: The charging device comprises: A battery, wherein the battery is fixed in the first housing and is electrically connected to the transmitting coil; and / or, The charging device comprises: a connecting wire, one end of which is electrically connected to the transmitting coil, and the other end of which is used to connect to an external power source.

6. The charging device according to claim 1, characterized in that: At least two transmitting coils surround the outer circumference of the first cavity, and the plurality of transmitting coils surrounding the outer circumference of the first cavity are spaced apart and distributed in a height direction of the first cavity.

7. The charging device according to claim 1, characterized in that: The first shell includes an inner shell and an outer shell, and the inner shell is divided into the first cavity and the second cavity from top to bottom in the height direction; The transmitting coil arranged around the first cavity is arranged in a layer between the inner shell and the outer shell, and / or the transmitting coil arranged at the bottom of the first cavity is arranged in the second cavity.

8. A wireless charging system, characterized in that: The wireless charging system comprises: The charging device according to any one of claims 1 to 7; An electronic device comprises a second shell and a receiving coil, wherein the receiving coil is arranged in the second shell and is used for wireless connection with the transmitting coil, so that the charging device can wirelessly charge the electronic device.

9. The wireless charging system according to claim 8, characterized in that: The opening is located at the top of the first cavity. When the bottom end of the second shell abuts against the bottom wall of the first cavity, the receiving coil is located in the first cavity. The second shell is divided into three sections along the axial direction. The three sections of the second shell are a head section, a middle section and a tail section respectively. The receiving coil is arranged in the middle section; and / or, The receiving coil is arranged in the head section or the tail section. When the second shell is placed in the first cavity, the section where the receiving coil is located is closer to the bottom of the first cavity than the other two sections.

10. The wireless charging system according to claim 8, characterized in that: The charging device also includes a sensor, which is used to detect changes in the magnetic field and is installed on the first shell. The electronic device also includes a magnet, which is fixedly connected to the second shell and is located in the second shell. When at least a portion of the second shell is located in the first cavity, at least a portion of the magnet is located in the detection area of ​​the sensor.

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