Stacked magnetic mobile power supply system

Abstract

This invention discloses a stacked magnetic power bank system, comprising a first power bank module and a second power bank module. They are positioned by a magnetic connection and electrically connected by a pogo pin and a contact pad. In the connected state, a controller manages the two power management circuits to transfer power to charge either battery, provide power jointly, or balance the state of charge. In the disconnected state, each module can output power independently. The stacked magnetic power bank system may also include a Type-C interface with a universal serial bus, a built-in cable, a flip-up charging / discharging connector, a wireless charging area for mobile and wearable devices, a display screen and power indicator light, and supporting components.

Claims

1. A stacked magnetic power bank system, comprising: a first power bank module including a first housing, a first rechargeable battery disposed within the first housing, a first power management circuit coupled to the first rechargeable battery, and a first external power interface configured to provide output power to an electronic device; a second power bank module including a second housing, a second rechargeable battery disposed within the second housing, a second power management circuit coupled to the second rechargeable battery, and a second external power interface configured to provide output power to the electronic device; and a detachable connection structure including: A magnetic connection portion is disposed on a first mating surface of the first housing and a second mating surface of the second housing; and an electrical connection portion is disposed on the first mating surface and the second mating surface, the electrical connection portion including at least one spring pin and at least one corresponding contact pad, such that when the first power module and the second power module are magnetically mated, the spring pin contacts the corresponding contact pad to form an inter-module electrical connection; and a controller is configured to control the first power management circuit and the second power management circuit in a mated state, transferring electrical energy between the first rechargeable battery and the second rechargeable battery through the inter-module electrical connection to perform at least one of the following: charging one of the first rechargeable battery and the second rechargeable battery, using the electrical energy of the first rechargeable battery and the second rechargeable battery to jointly power the electronic device, and balancing the state of charge of the first rechargeable battery and the second rechargeable battery, wherein the mated state refers to the first power module and the second power module being magnetically mated; wherein... In a disconnected state, the first power module and the second power module can each independently provide power to the electronic device through the first external power interface and the second external power interface, wherein the disconnected state means that the first power module and the second power module are separated from each other.

2. The stacked magnetic portable power system as claimed in claim 1, wherein the first external power interface includes a USB Type-C port, and the second external power interface includes a USB Type-C port.

3. The stacked magnetic portable power system as described in claim 1, wherein the electrical connection between the modules provides both a power transmission path and a data communication path for communication between the first power management circuit and the second power management circuit.

4. The stacked magnetic portable power system as claimed in claim 1, wherein the controller is configured to determine the respective states of charge of the first rechargeable battery and the second rechargeable battery, and to transfer electrical energy from the battery with a higher state of charge to the battery with a lower state of charge through the electrical connection between the modules, in order to perform the balancing.

5. The stacked magnetic power bank system as claimed in claim 1, wherein the second power bank module includes a wireless power transmitting coil disposed adjacent to the outer surface of the second housing to define a wireless charging area for a wearable device.

6. The stacked magnetic power bank system as claimed in claim 1, wherein the first power bank module includes a wireless power transmitting coil disposed adjacent to the outer surface of the first housing to define a wireless charging area for a mobile device.

7. The stacked magnetic power bank system as claimed in claim 1, wherein the second power bank module includes a flip-out charging / discharging connector movably mounted on the second housing and rotatable between a stowed position and an unfolded position, wherein in the unfolded position the flip-out charging / discharging connector protrudes outward from the second housing; wherein the flip-out charging / discharging connector is a USB Type-C plug.

8. The stacked magnetic power bank system as claimed in claim 1, wherein the first power bank module includes a built-in cable with a USB Type-C plug at one end, and the built-in cable is held on the first housing when not in use.

9. The stacked magnetic power bank system as claimed in claim 1, wherein at least one of the first power bank module and the second power bank module includes: at least one power indicator light; a display screen configured to display battery capacity information; and a power button configured to activate power output.

10. The stacked magnetic power bank system as claimed in claim 6, wherein the first power bank module further includes a support member coupled to the first housing and movable between a storage position and a supporting position; and wherein, When in the supported position, the support member supports the electronic device at an inclined angle, while the electronic device wirelessly charges in the mobile device wireless charging area.

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