Charging device

Abstract

The utility model provides a charging device which comprises a shell which comprises an upper cover and a lower cover which are movably connected, a first magnet and a third charging coil are arranged on the inner side of the upper cover, and a battery, a microprocessor, a power supply unit, a first charging coil, a second charging coil and a Hall sensor are arranged on the inner side of the lower cover. The position of the Hall sensor is opposite to the position of the first magnet, so that the Hall sensor can sense the first magnet when the upper cover and the lower cover are close to each other or closed, the Hall sensor is in signal connection with the microprocessor, and the microprocessor is electrically connected with the power supply unit; the first charging coil, the second charging coil and the third charging coil are electrically connected with the power supply unit, and the power supply unit is electrically connected with the battery. The charging device provided by the utility model can effectively avoid FOD abnormity, improves the charging efficiency, and supports wireless self-charging at the same time.

Description

Technical Field

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

[0002] With the widespread use of mobile devices, charging devices such as power banks for charging mobile devices have also become common electronic devices. At present, charging devices support wired charging and wireless charging. For example, the patent document with application number CN202321988617.X discloses a wireless charging device that can wirelessly charge multiple electronic devices. This type of charging device uses multiple charging coils and has complex internal electrical circuits, which is not only difficult to move, but also when the wireless charging metal surface of the charged electronic device coincides with the multiple charging coil surfaces of the wireless charging device, it will trigger a foreign object detection (FOD, Foreign Object Detector) abnormality, causing charging to be forced to be interrupted, and will affect charging safety. In addition, this type of charging device needs to use a charging cable to connect to an external power source for charging, which is inconvenient to use and cannot be applied to the needs of various scenarios. Utility Model Content

[0003] In order to solve or at least partially solve the above technical problems, the utility model provides a charging device.

[0004] One aspect of the utility model provides a charging device, comprising:

[0005] A housing, comprising an upper cover and a lower cover that are movably connected, a first magnet and a third charging coil are arranged on the inner side of the upper cover, a battery, a microprocessor, a power supply unit, a first charging coil, a second charging coil and a Hall sensor are arranged on the inner side of the lower cover, a position of the Hall sensor corresponds to a position of the first magnet so that the Hall sensor can sense the first magnet when the upper cover and the lower cover are close to or closed, the microprocessor is electrically connected to the power supply unit, the first charging coil, the second charging coil and the third charging coil are electrically connected to the power supply unit respectively, and the power supply unit is electrically connected to the battery;

[0006] The first charging coil is a receiving coil, used to charge the battery;

[0007] The second charging coil is a transmitting coil, which is used to charge an external electronic device;

[0008] The third charging coil is a transmitting coil, which is used to charge an external electronic device;

[0009] The Hall sensor is used to generate a first electrical signal when sensing the first magnet;

[0010] The microprocessor is used to control the power supply unit to be disconnected from the second charging coil under the triggering of the first electrical signal, so as to turn off the output of the second charging coil.

[0011] In some implementations, the charging device further includes: a flip detection circuit electrically connected to the Hall sensor, and configured to send a signal for shutting down the output power of the second charging coil when triggered by the first electrical signal.

[0012] In some embodiments, the second charging coil is used to charge the electronic device in the charging bin.

[0013] In some embodiments, the power supply unit includes: a first wireless power transmission circuit, a second wireless power transmission circuit and a wireless power receiving circuit, wherein the first wireless power transmission circuit, the second wireless power transmission circuit and the wireless power receiving circuit are electrically connected to the battery respectively, the wireless power receiving circuit is electrically connected to the first charging coil, the first wireless power transmission circuit is electrically connected to the second charging coil, and the second wireless power transmission circuit is electrically connected to the third charging coil.

[0014] In some implementations, the charging device further includes: a DC-DC converter electrically connected to the microprocessor, the wireless power receiving circuit, the first wireless power transmitting circuit, and the second wireless power transmitting circuit, respectively.

[0015] In some embodiments, a wake-up button is provided on the upper cover or the lower cover; the charging device also includes: a key switch circuit, electrically connected to the microprocessor, for generating a second electrical signal when the wake-up button is pressed, so that the microprocessor wakes up the charging device when triggered by the second electrical signal.

[0016] In some embodiments, an indicator light is further provided on the outside of the upper cover or the lower cover; the charging device further comprises: an indicator light circuit, electrically connected to the microprocessor, for controlling the working state of the indicator light according to instructions of the microprocessor, and the working state of the indicator light is used to indicate the working state of the charging device.

[0017] In some embodiments, the charging device further includes one or more of the following circuit units, which are electrically connected to the microprocessor: an overvoltage protection circuit; an overcurrent protection circuit; an overheating protection circuit; a short circuit protection circuit; a low voltage power-off protection circuit; and an abnormal alarm circuit.

[0018] In some implementations, a temperature sensor is further disposed on the upper cover or the lower cover, and the temperature sensor is electrically connected to the overheat protection circuit.

[0019] In some implementations, the upper cover or the lower cover is provided with a charging interface; the charging device further comprises: an interface circuit, which is electrically connected to the charging interface and the power supply unit respectively.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The charging device provided in the embodiment of the utility model adopts a Hall sensor to sense the opening and closing of the shell of the charging device and controls the working state of the second charging coil accordingly, which can effectively avoid the FOD anomaly triggered by the overlapping use of the metal surface of the wireless charger and the charging coil surface for charging electronic devices such as earphone charging bins. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation of the utility model, the following is a brief introduction to the relevant drawings. It is understood that the drawings described below are only used to illustrate some implementations of the utility model, and ordinary technicians in this field can also obtain many other technical features and connection relationships not mentioned in this article based on these drawings.

[0023] Figure 1 It is a schematic diagram of the structure of the charging device provided by the embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the charging device provided by the embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the circuit structure of the charging device provided by the embodiment of the utility model;

[0026] Figure 4 1 is a circuit structure diagram of a wireless power transmission circuit according to an embodiment of the present utility model;

[0027] Figure 5 1 is a circuit structure diagram of a wireless power receiving circuit according to an embodiment of the present utility model;

[0028] Figure 6 This is an example diagram of the circuit structure of the Hall sensor involved in the embodiment of the utility model.

[0029] Description of labels:

[0030] 100. Charging device

[0031] 101 Upper cover

[0032] 102 Lower cover

[0033] 103 First Magnet

[0034] 104 Charging port

[0035] 105 Indicator Light

[0036] 120 microprocessor

[0037] 130 Power supply unit

[0038] 131 Battery

[0039] 132 first wireless power transmission circuit

[0040] 133 second wireless power transmission circuit

[0041] 134 Wireless Power Receiving Circuit

[0042] 140 First charging coil

[0043] 150 second charging coil

[0044] 160 Third charging coil

[0045] 170DC-DC Converter

[0046] 180 Hall sensor

[0047] 190 key switch circuit DETAILED DESCRIPTION

[0048] The utility model is described in detail below in conjunction with the accompanying drawings.

[0049] Figure 1 The schematic diagram of the structure of the charging device 100 provided by the utility model is shown. Figure 2 The schematic diagram of the circuit structure of the charging device 100 provided by the utility model is shown.

[0050] See also Figure 1 and Figure 2 As shown, the charging device 100 provided by the utility model includes a shell, and the shell includes an upper cover 101 and a lower cover 102 that can be movably connected. The upper cover 101 and the lower cover 102 can be closed or opened. Exemplarily, in order to facilitate charging through the charging coil, the upper cover 101 and the lower cover 102 can be made of metal respectively. By arranging a magnet for adsorption on the inner side of the upper cover 101 or the lower cover 102, the electronic device to be charged can be adsorbed to the designated area of ​​the upper cover 101 or the lower cover 102, thereby improving the charging efficiency.

[0051] See also Figure 3As shown, the charging device 100 provided by the utility model includes: a first magnet 103 for triggering a Hall sensor 180, a third charging coil 160, a microprocessor 120, a battery 131, a power supply unit 130, a first charging coil 140, a second charging coil 150 and a Hall sensor 180, the Hall sensor 180 is signal-connected to the microprocessor 120, the microprocessor 120 is electrically connected to the power supply unit 130, the first charging coil 140, the second charging coil 150 and the third charging coil 160 are electrically connected to the power supply unit 130 respectively, and the power supply unit 130 is electrically connected to the battery 131.

[0052] The first charging coil 140 is a receiving coil, which can be used to wirelessly charge the battery 131. Specifically, the first charging coil 140 can be arranged at the upper inner part of the lower cover 102 and close to the cover body of the lower cover 102. When the external power source is close to or attached to the upper outer part of the lower cover 102, the first charging coil 140 can receive radio waves from the external power source to charge the battery 131 of the charging device 100, and the charging device 100 can store, replenish and / or store electricity without a charging cable.

[0053] The second charging coil 150 is a transmitting coil, which can be used to wirelessly charge external electronic devices. Specifically, the second charging coil 150 can be arranged at the lower inner part of the lower cover 102 and close to the cover body of the lower cover 102. When the external electronic device is close to or attached to the lower outer part of the lower cover 102, the second charging coil 150 converts the electric energy of the battery 131 in the charging device 100 into radio waves and transmits them. The electronic device receives the radio waves through its internal charging coil for charging.

[0054] In order to prevent the first charging coil 140 and the second charging coil 150 from interfering with each other, the first charging coil 140 and the second charging coil 150 are isolated from each other. For example, a partition can be provided inside the lower cover 102, and the first charging coil 140 and the second charging coil 150 are separated by the partition, so that the first charging coil 140 and the second charging coil 150 can be arranged independently inside the lower cover 102, which is conducive to reducing interference between the charging coils and improving charging efficiency.

[0055] In one example, the first magnet 103 can be disposed inside the upper cover 101, and the Hall sensor 180 can be disposed inside the lower cover 102. The position of the Hall sensor 180 corresponds to the position of the first magnet 103. When the upper cover 101 and the lower cover 102 are close to or closed, the Hall sensor 180 will generate a first electrical signal due to the induction of the first magnet 103, so that the microprocessor 120 can disconnect the connection between the second charging coil 150 and the power supply unit 130 under the triggering of the first electrical signal, and turn off the output of the second charging coil 150. Therefore, the operation of the second charging coil 150 can be controlled by the combination of the Hall sensor 180 and the first magnet 103. When the Hall sensor 180 senses the magnet or the upper cover 101 and the lower cover 102 are closed, the second charging coil 150 turns off the output. When the Hall sensor 180 does not sense the magnet or the upper cover 101 and the lower cover 102 are opened, the second charging coil 150 turns on the output, which is conducive to reducing the interference between the second charging coil 150 and other charging coils and improving the charging efficiency.

[0056] The second charging coil 150 can be used to charge various types of electronic devices such as mobile phones, tablet computers, headphones, etc. Preferably, the second charging coil 150 can be used exclusively for charging electronic devices in a charging compartment, for example, a headphone charging compartment.

[0057] The third charging coil 160 is a transmitting coil, which can be used to wirelessly charge the electronic device. Specifically, the third charging coil 160 can be arranged on the inner side of the upper cover 101 and close to the cover body of the upper cover 101. When the electronic device is close to or attached to the outer side of the upper cover 101, the third charging coil 160 converts the electric energy of the battery 131 in the charging device 100 into radio waves and transmits them. The electronic device receives the radio waves through the charging coil inside it for charging.

[0058] When the upper cover 101 and the lower cover 102 are closed, the housing of the charging device 100 is in a closed state, the second charging coil 150 does not work, and the first charging coil 140 and the third charging coil can work. When the upper cover 101 and the lower cover 102 are opened, the housing of the charging device 100 is in an open state, and the first charging coil 140, the second charging coil 150, and the third charging coil 160 can all work.

[0059] See also Figure 3In the charging device 100 of the embodiment of the utility model, the power supply unit 130 may include: a first wireless power transmission circuit 132, a second wireless power transmission circuit 133 and a wireless power receiving circuit 134, the first wireless power transmission circuit 132, the second wireless power transmission circuit 133 and the wireless power receiving circuit 134 are electrically connected to the battery 131 respectively, the wireless power receiving circuit 134 is electrically connected to the first charging coil 140, the first wireless power transmission circuit 132 is electrically connected to the second charging coil 150, and the second wireless power transmission circuit 133 is electrically connected to the third charging coil 160.

[0060] In one example, the battery 131 may be, but is not limited to, a lithium battery, a lithium polymer battery, or other types of rechargeable batteries.

[0061] When the first charging coil 140 receives radio waves from an external power source, the radio waves are converted into electric energy for the battery 131 through the wireless power receiving circuit 134, thereby realizing the recharging of the battery 131. When the electronic device is close to the second charging coil 150 at the lower outer part of the lower cover 102, the electric energy of the battery 131 is converted into radio waves by the first wireless power transmitting circuit 132 and the second charging coil 150 and then transmitted. The radio waves are received by the electronic device and converted into electric energy and stored in the electronic device. When the electronic device is close to the third charging coil 160 on the outer side of the upper cover 101, the electric energy of the battery 131 is converted into radio waves by the second wireless power transmitting circuit 133 and the third charging coil 160 and then transmitted. The radio waves are received by the electronic device and converted into electric energy and stored in the electronic device.

[0062] For example, the first wireless power transmission circuit 132 and the second wireless power transmission circuit 133 may adopt Figure 4 The circuit structure shown in FIG. 1 is a wireless power receiving circuit 134. Figure 5 The circuit structure shown in FIG. 1 is a circuit structure of the Hall sensor 180. Figure 6 The circuit structure shown.

[0063] In some embodiments, the charging device 100 may further include: a flip detection circuit, which is electrically connected to the Hall sensor 180 and can be used to send an indication signal for shutting down the output power of the second charging coil under the triggering of the first electrical signal generated by the Hall sensor 180. Thus, the output of the second charging coil 150 can be automatically shut down when the shell of the charging device 100 is closed through the flip detection circuit, thereby automatically stopping the charging of electronic devices such as the charging bin when the shell of the charging device 100 is in a closed state.

[0064] See also Figure 3Optionally, the charging device 100 provided by the utility model may further include: a direct current to direct current (DC-DC) converter 170, which is electrically connected to the microprocessor 120, the wireless power receiving circuit 134, the first wireless power transmitting circuit 132, and the second wireless power transmitting circuit 133. The DC-DC converter 170 can realize voltage conversion between the microprocessor 120 and different circuits.

[0065] Optionally, in the charging device 100 of the present invention, a wake-up button may be provided on the outer side of the upper cover 101 or the lower cover 102. Figure 3 The charging device 100 may further include: a key switch circuit 190, which may be integrated in the microprocessor 120 or independently provided and electrically connected to the microprocessor 120, and the key switch circuit 190 is used to generate a second electrical signal when the wake-up key is pressed, and the microprocessor 120 may also be used to wake up the charging device 100 under the triggering of the second electrical signal. Thus, when the charging device 100 is in a dormant state, the charging device 100 may be woken up by a key to start the charging function of the charging device 100.

[0066] Optionally, an indicator light 105 may be provided on the outside of the upper cover 101 or the lower cover 102 of the charging device 100 of the utility model, and the charging device 100 may further include: an indicator light circuit, the indicator light circuit is electrically connected to the microprocessor 120 or integrated in the microprocessor 120, and can be used to control the working state of the indicator light 105 according to the instruction of the microprocessor 120, so as to indicate the working state of the charging device 100 through the working state of the indicator light 105. The indicator light 105 and the indicator light circuit can be used to indicate the current state of the charging device 100, for example, it is always on when charging, and flashes quickly when abnormal.

[0067] Optionally, the charging device 100 of the utility model may further include one or more of the following circuit units: an overvoltage protection circuit, an overcurrent protection circuit, an overheat protection circuit, a short circuit protection circuit, a low voltage power-off protection circuit, and an abnormal alarm circuit. These circuit units may be integrated into the microprocessor 120 or independently provided and electrically connected to the microprocessor 120. Through these circuit units, the functions of the charging device 100 such as overvoltage protection, overcurrent protection, overheat protection, short circuit protection, low voltage power-off protection, and abnormal alarm may be realized.

[0068] In one example, a temperature sensor may be further provided on the lower cover 102 or the upper cover 101 of the charging device 100, and the temperature sensor is electrically connected to the overheat protection circuit. The temperature sensor may be used to sense the ambient temperature and provide the sensed ambient temperature value to the overheat protection circuit, so that the overheat protection circuit controls the charging device 100 to automatically shut down when the ambient temperature value exceeds a predetermined threshold.

[0069] Alternatively, see Figure 3 , a charging interface 104 may also be provided on the lower cover 102 or the upper cover 101 of the charging device 100, and the charging device 100100 may also include an interface circuit, and the charging interface 104 is electrically connected to the power supply unit 130 through the interface circuit. Thus, the power supply unit 130 may be charged by wire, or an external electronic device may be charged by wire. Exemplarily, the charging interface 104 may be, but is not limited to, TYPE-C, USB, or various other types.

[0070] Optionally, the charging device 100 may further include a charging cable, which may be embedded in the lower cover 102 , and the charging cable may store electricity / replenish electricity / store electricity for the charging device 100 .

[0071] In a specific application, a printed circuit board (PCB) may be disposed inside the lower cover 102, and the microprocessor 120, the power supply unit 130, and the aforementioned circuit units may be integrated on the printed circuit board to achieve electrical connection between the microprocessor 120, the power supply unit 130, and the other circuit units. The battery 131 may be disposed independently of the printed circuit board.

[0072] The charging device of the utility model has the following beneficial effects:

[0073] 1) One or more electronic devices can be wirelessly charged at the same time;

[0074] 2) The Hall sensor is used to sense the opening of the shell and control the working state of the second charging coil accordingly, which can effectively avoid FOD anomalies triggered by the overlap of the metal surface of the wireless charger and the charging coil surface for charging electronic devices such as headphone charging bins.

[0075] 2) Can be used as a mobile power source;

[0076] 3) With wireless charging and receiving function;

[0077] 3) Support charging and discharging mode;

[0078] 4) The charging port and wireless charger can be directly connected to the load for charging.

[0079] 5) It can be used in wireless charging scenarios such as outdoors and in cars.

[0080] 6) The wireless charging of electronic devices such as headphone charging boxes is not affected by whether other loads are working.

[0081] 7) Support bidirectional charging and discharging of C port and C line;

[0082] 8) Support PD maximum 20W discharge;

[0083] 9) Wireless charging can support automatic wake-up output function.

[0084] Finally, it should be noted that those skilled in the art can understand that in order to make the reader better understand the utility model, the embodiments of the utility model provide many technical details. However, even without these technical details and various changes and modifications based on the above-mentioned embodiments, the technical solutions claimed for protection by the claims of the utility model can be basically realized. Therefore, in practical applications, various changes can be made to the above-mentioned embodiments in form and detail without departing from the spirit and scope of the utility model.

Claims

1. A charging device, characterized in that: include: A housing, comprising an upper cover and a lower cover that are movably connected, a first magnet and a third charging coil are arranged on the inner side of the upper cover, a battery, a microprocessor, a power supply unit, a first charging coil, a second charging coil and a Hall sensor are arranged on the inner side of the lower cover, a position of the Hall sensor corresponds to a position of the first magnet so that the Hall sensor can sense the first magnet when the upper cover and the lower cover are close to or closed, the microprocessor is electrically connected to the power supply unit, the first charging coil, the second charging coil and the third charging coil are electrically connected to the power supply unit respectively, and the power supply unit is electrically connected to the battery; The first charging coil is a receiving coil, used to charge the battery; The second charging coil is a transmitting coil, which is used to charge an external electronic device; The third charging coil is a transmitting coil, which is used to charge an external electronic device; The Hall sensor is used to generate a first electrical signal when sensing the first magnet; The microprocessor is used to control the power supply unit to be disconnected from the second charging coil under the triggering of the first electrical signal, so as to turn off the output of the second charging coil.

2. The charging device according to claim 1, characterized in that: Also includes: The flip detection circuit is electrically connected to the Hall sensor and is used to send a signal to turn off the output power of the second charging coil when triggered by the first electrical signal.

3. The charging device according to claim 1, characterized in that: The second charging coil is used to charge the electronic equipment in the charging compartment.

4. The charging device according to claim 1, characterized in that: The power supply unit includes: a first wireless power transmission circuit, a second wireless power transmission circuit and a wireless power receiving circuit, wherein the first wireless power transmission circuit, the second wireless power transmission circuit and the wireless power receiving circuit are electrically connected to the battery respectively, the wireless power receiving circuit is electrically connected to the first charging coil, the first wireless power transmission circuit is electrically connected to the second charging coil, and the second wireless power transmission circuit is electrically connected to the third charging coil.

5. The charging device according to claim 4, characterized in that: Also includes: The DC-DC converter is electrically connected to the microprocessor, the wireless power receiving circuit, the first wireless power transmitting circuit and the second wireless power transmitting circuit respectively.

6. The charging device according to claim 5, characterized in that: The upper cover or the lower cover is provided with a wake-up button; The charging device further includes: a key switch circuit electrically connected to the microprocessor and configured to generate a second electrical signal when the wake-up key is pressed, so that the microprocessor wakes up the charging device under the triggering of the second electrical signal.

7. The charging device according to claim 6, characterized in that: The outer side of the upper cover or the lower cover is also provided with an indicator light; The charging device further comprises: an indicator light circuit, which is electrically connected to the microprocessor and is used to control the working state of the indicator light according to the instruction of the microprocessor, and the working state of the indicator light is used to indicate the working state of the charging device.

8. The charging device according to any one of claims 1 to 7, characterized in that: It also includes one or more of the following circuit units, which are electrically connected to the microprocessor: Overvoltage protection circuit; Overcurrent protection circuit; Overheat protection circuit; Short circuit protection circuit; Low voltage power-off protection circuit; Abnormal alarm circuit.

9. The charging device according to claim 8, characterized in that: A temperature sensor is also provided on the upper cover or the lower cover, and the temperature sensor is electrically connected to the overheat protection circuit.

10. The charging device according to claim 8, characterized in that: The upper cover or the lower cover is provided with a charging interface; The charging device further comprises: an interface circuit, which is electrically connected to the charging interface and the power supply unit respectively.

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