Mobile power supply based on hall switch triggering display power

Abstract

This utility model relates to the field of portable power bank technology, specifically a portable power bank that displays battery level based on a Hall effect switch trigger. It includes a housing, a battery and control circuit housed within the housing, and a battery level display module mounted on the housing. It also includes a USB power cable, one end of which passes through the housing and connects to the control circuit, while the other end serves as an external USB connector mounted on the housing. A storage section is formed on the housing to house the USB connector. A magnet is incorporated within the USB connector. The control circuit includes an MCU unit and a Hall effect unit. The Hall effect unit detects changes in the magnetic field of the storage section. When the USB connector is inserted into and / or removed from the storage section, the Hall effect unit outputs a trigger signal to the MCU unit. Upon receiving the trigger signal, the MCU unit activates the battery level display module. This utility model eliminates the need for touch or physical buttons to trigger the battery level display module, resulting in a simpler and more reliable structure that reduces power consumption and the likelihood of accidental operation.

Description

Technical Field

[0001] This utility model relates to the field of mobile power bank technology, specifically a mobile power bank that displays battery level based on a Hall switch trigger. Background Technology

[0002] The power display function of a power bank is one of the core indicators of user experience. Its functional design involves multiple dimensions such as hardware circuits, algorithm optimization and user interaction. Its core lies in monitoring the battery status in real time and triggering corresponding display feedback.

[0003] In existing power bank technologies, the power display function typically relies on touch or physical buttons for activation. Its core design logic involves user-activated display modules, such as LED indicators, LCD screens, or graphical interfaces, to indicate the remaining battery capacity. While such solutions are widely used in the market, their technical implementation still suffers from the following significant drawbacks:

[0004] (1) The contradiction between power consumption and energy efficiency. Touch or button triggering mechanisms need to continuously monitor user input signals, causing the control circuit to be in a standby power consumption state for a long time. For example, the LED indicator of a traditional power bank needs to be intermittently displayed through a periodic wake-up circuit, while physical buttons need to add trigger thresholds or delay circuits to achieve the design of preventing accidental touches, which will further increase static power consumption. In addition, some touch solutions need to integrate additional capacitive sensing modules, whose continuous power supply requirements directly conflict with the goals of lightweight and long battery life of power banks.

[0005] (2) Operational reliability issues. Physical buttons are susceptible to mechanical wear, oxidation, or foreign object jamming, which may lead to poor contact or malfunction after long-term use. For example, the power button mentioned in Chinese patent document CN203119570U requires multiple presses to activate the display function, and its mechanical structure has significantly reduced reliability under frequent operation. Although touch solutions avoid mechanical parts, they are sensitive to environmental humidity and temperature. Humid environments may cause a decrease in touch sensitivity or even failure.

[0006] (3) User experience defects. The layout of the touch area and buttons is often poorly designed, leading to accidental touches. Some power banks have buttons located in easily accessible areas on the front of the device, which are prone to accidental activation and cause unnecessary power consumption. In addition, touch response delays or misjudgments can also reduce the smoothness of operation, especially affecting the user experience in emergency charging scenarios.

[0007] (4) System integration complexity

[0008] Touch or button triggering requires the additional integration of sensors, signal processing circuits, and drive modules, resulting in increased PCB area and material costs, significantly increasing the size and weight of the power bank, which contradicts the industry trend towards thinner and lighter designs.

[0009] In summary, existing touch- or button-triggered power display solutions have significant limitations in terms of power consumption control, reliability, information accuracy, and user experience. These shortcomings are further amplified, especially in high-frequency use scenarios involving power banks, necessitating innovative technological breakthroughs to achieve breakthroughs in triggered power display solutions. Utility Model Content

[0010] This utility model aims to meet the above-mentioned needs of the prior art and provides a mobile power bank based on Hall switch-triggered power display, the technical solution of which is as follows.

[0011] A portable power bank that displays battery level based on Hall effect switch triggering includes a housing, a battery and control circuit housed within the housing, and a battery level display module mounted on the housing. The battery and the battery level display module are respectively connected to the control circuit, and the battery level display module is used to display the battery level. It also includes a USB power cable, one end of which passes through the housing and connects to the control circuit, and the other end of which is configured as a USB connector external to the housing. A storage part for housing the USB connector is formed on the housing.

[0012] The USB connector contains a magnet;

[0013] The control circuit includes an MCU unit and a Hall unit, with the Hall unit used to detect changes in the magnetic field of the storage section.

[0014] The Hall effect sensor outputs a trigger signal to the MCU unit when the USB connector is inserted into and / or removed from the storage compartment. When the MCU unit receives the trigger signal, it triggers the power display module.

[0015] As an improvement, the storage section has a groove-like structure in which the USB connector is detachably embedded.

[0016] Furthermore, the groove structure has protruding ridges on a pair of sidewalls, and the USB connector has an injection-molded plastic body; when the USB connector is embedded in the groove structure of the storage part, the plastic body is clamped between the protruding ridges to form an interference fit.

[0017] Preferably, the groove structure also has a recessed groove extending from the USB connector on one side of the end of the USB connector.

[0018] Preferably, the surface of the plastic body forms an arc-shaped edge protruding towards the ridge, and when the USB connector is embedded in the groove-shaped structure of the storage part, the center point of the arc-shaped edge is located inside the ridge.

[0019] As another improvement, the power display module includes an indicator light group consisting of multiple LEDs, which is used to indicate the battery power by the number of LEDs that are lit.

[0020] As another improvement, the USB connector can be one of the following interface types: Type-C, Micro USB, or Lightning.

[0021] As another improvement, the casing has a soft magnetic sheet in the area where the storage part is located, which is used to magnetically absorb and store the USB connector.

[0022] Compared with the prior art, the present invention has the following advantages: the Hall unit detects the change in the magnetic field of the storage part when the USB connector is inserted into and / or removed from the storage part, and outputs a trigger signal to the MCU unit. The MCU unit then triggers the power display module according to the received trigger signal, so that the triggering of the power display module no longer depends on touch or physical buttons, the structure is simpler and more reliable, and both power consumption and the probability of misoperation are reduced.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a structural schematic diagram of Embodiment 1 of this utility model.

[0026] Figure 3 This is a schematic diagram illustrating the working principle of Embodiment 1 of this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0028] Figure 5 This is a schematic diagram of the circuit principle of the MCU unit in this utility model.

[0029] Figure 6 This is a schematic diagram of the circuit principle of the Hall unit in this utility model.

[0030] Figure 7 This is a schematic diagram of the circuit principle of the power display module in this utility model. Detailed Implementation

[0031] Please see Figures 1 to 7As shown, in one embodiment, this utility model provides a portable power bank that displays battery level based on Hall effect switch triggering, including a housing 1, a battery 2 and a control circuit 3 disposed in the housing 1, and a battery level display module 4 disposed on the housing 1. The battery 2 and the battery level display module 4 are respectively connected to the control circuit 3, and the battery level display module 4 is used to display the battery level of the battery 2; it also includes a USB power cable 5, one end of which passes through the housing 1 and is connected to the control circuit 3, and the other end of which is configured as a USB connector 6 externally disposed on the housing 1, and a storage part 7 is formed on the housing 1 for storing the USB connector 6;

[0032] The USB connector 6 contains a magnet 8;

[0033] The control circuit 3 includes an MCU unit 21 and a Hall unit 22. The Hall unit 22 is used to detect changes in the magnetic field of the storage section 7.

[0034] When the USB connector 6 is inserted into and / or removed from the storage section 7, the Hall unit 22 outputs a trigger signal to the MCU unit 21. When the MCU unit 21 receives the trigger signal, it triggers the power display module 4.

[0035] In the above embodiment, the power bank comes with a built-in USB power cable 5, which to some extent solves the problem of users needing to find a separate power cable to use the power bank. In particular, since the USB connector 6 has a magnet 8, the Hall unit 22 will detect the change in the magnetic field of the storage part 7 when the USB connector 6 is inserted into and / or removed from the storage part 7, thereby outputting a trigger signal to the MCU unit 21. The MCU unit 21 then triggers the power display module 4 according to the received trigger signal.

[0036] Obviously, the above implementation method makes the triggering of the power display module 4 of the power bank no longer dependent on touch or physical buttons, making the structure simpler and more reliable, reducing power consumption and the probability of misoperation.

[0037] To more intuitively understand the circuit architecture of this utility model, Figure 5 An exemplary circuit for the MCU unit 21 in this invention is provided. The MCU unit 21 uses a chip U1 of model SD59D24B, with pins 24-27 used to drive the power display module 4, and pin 57 used to receive the trigger signal from the Hall unit 22. Since the chip U1 is a known device, the construction of its peripheral circuitry will not be described in detail in the specific embodiment.

[0038] based on Figure 5 The MCU unit 21 shown, and the Hall unit 22 in this utility model can be adopted. Figure 6The exemplary circuit shown is illustrated. The Hall element 22 utilizes an OCH1660WAD omnipolar Hall switch U2. Similarly, given that the omnipolar Hall switch U2 is a known device, the construction of its peripheral circuitry will not be described in detail in the specific implementation.

[0039] based on Figure 5 The MCU unit 21 shown, and the power display module 4 in this utility model can be adopted. Figure 7 The exemplary circuit shown is illustrated here. The power display module 4 includes an indicator light group composed of multiple LEDs, used to indicate the power level of battery 2 by the number of lit LEDs. Specifically, the power display module 4 includes four LEDs: LED0, LED1, LED2, and LED3, which are connected in series with pins 24-27 of chip U1, corresponding one-to-one.

[0040] Optionally, the USB connector 6 can be one of the following interface types: Type-C, Micro USB, or Lightning.

[0041] Regarding the specific storage method of the USB connector 6, this utility model provides the following embodiments.

[0042] Example 1

[0043] like Figure 2 and Figure 3 As shown, in Embodiment 1, the storage part 7 has a groove structure 71, and the USB connector 6 is detachably embedded in the groove structure 71, so that the USB connector 6 will not protrude from the outer shell 1 of the power bank when stored, thus preventing it from being accidentally knocked off the storage part 7 and further reducing the probability of the power display module 4 being accidentally triggered.

[0044] like Figure 3 As shown, furthermore, the groove-shaped structure 71 has protrusions 70 on a pair of sidewalls, and the USB connector 6 has an injection-molded plastic body 61, with the magnet 8 embedded in the plastic body 61. When the USB connector 6 is inserted into the groove-shaped structure 71 of the storage part 7, the plastic body 61 is clamped between the protrusions 70, forming an interference fit. The material properties of the plastic body 61 give it the characteristic of slight elastic deformation. Therefore, while the plastic body 61 is clamped between the protrusions 70, it can also be removed. This characteristic effectively keeps the USB connector 6 stable in the stored state.

[0045] like Figure 2 As shown, preferably, the groove-shaped structure 71 also has a recessed groove 72 extending beyond the USB connector 6 on one side of the end of the USB connector 6. The size of the recessed groove 72 is designed according to the width of an average adult's finger, allowing the user to use their finger or an auxiliary tool to pry open the USB connector 6 through the recessed groove 72, making it easier to remove the USB connector 6.

[0046] like Figure 3 As shown, preferably, the surface of the plastic body 61 forms an arc-shaped edge 62 protruding towards the ridge 70. When the USB connector 6 is inserted into the groove structure 71 of the storage portion 7, the center point of the arc-shaped edge 62 is located inside the ridge 70. With this arrangement, the USB connector 6 is better positioned when inserted into the groove structure 71 of the storage portion 7, allowing the USB connector 6 to be more stable in the stored state.

[0047]

Example 2

[0048] like Figure 4 As shown, in Embodiment 2, the outer casing 1 has a soft magnetic sheet 9 in the area where the storage part 7 is located, which is used to magnetically absorb and store the USB connector 6. After the USB connector 6 is placed into the storage part 7, magnetic attraction occurs between the magnet 8 and the soft magnetic sheet 9, allowing the USB connector 6 to be detachably attached to the storage part 7. Furthermore, when the USB connector 6 is placed into and removed from the storage part 7, the change in its magnetic field will act on the Hall unit 22 through the soft magnetic sheet 9.

[0049] In the second embodiment, preferably, the USB connector 6 has an injection-molded plastic body 61, and the magnet 8 is embedded in the plastic body 61; the soft magnet 9 can be combined with the shell 1 by in-mold injection molding, or by adhesive bonding, or by screw fixing.

[0050] Of course, in Embodiment 2, a positioning groove 73 that mates with the USB connector 6 can also be formed in the storage section 7. On the one hand, the positioning groove 73 accurately indicates the storage position of the USB connector 6 to the user; on the other hand, the positioning groove 73 makes it less likely for the magnetically absorbed USB connector 6 to become misaligned, preventing it from being accidentally knocked away from the storage section 7, and reducing the probability of the power display module 4 being falsely triggered to a certain extent.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power bank that displays battery level based on Hall effect switch triggering, comprising a housing, a battery and control circuit disposed within the housing, and a battery level display module disposed on the housing, wherein the battery and the battery level display module are respectively connected to the control circuit, and the battery level display module is used to display the battery level; it also includes a USB power cable, one end of which passes through the housing and connects to the control circuit, and the other end of which is configured as a USB connector externally disposed on the housing, and a storage part for storing the USB connector is formed on the housing; Its features are: The USB connector contains a magnet; The control circuit includes an MCU unit and a Hall unit, with the Hall unit used to detect changes in the magnetic field of the storage section. The Hall effect sensor outputs a trigger signal to the MCU unit when the USB connector is inserted into and / or removed from the storage compartment. When the MCU unit receives the trigger signal, it triggers the power display module.

2. The mobile power bank with power display based on Hall switch triggering according to claim 1, characterized in that: The storage section has a groove-like structure, and the USB connector is detachably embedded in the groove-like structure.

3. The mobile power bank with power display based on Hall switch triggering according to claim 2, characterized in that, The groove-shaped structure has protruding ridges on a pair of sidewalls, and the USB connector has an injection-molded plastic body; when the USB connector is embedded in the groove-shaped structure of the storage part, the plastic body is clamped between the protruding ridges to form an interference fit.

4. The mobile power bank with power display based on Hall switch triggering according to claim 3, characterized in that, The groove-shaped structure has a recessed groove extending from the end of the USB connector on one side.

5. The mobile power bank with power display based on Hall switch triggering according to claim 3, characterized in that, The surface of the plastic body forms an arc-shaped edge protruding towards the ridge. When the USB connector is embedded in the groove-shaped structure of the storage part, the center point of the arc-shaped edge is located inside the ridge.

6. The mobile power bank with power display based on Hall switch triggering according to claim 1, characterized in that: The power display module includes an indicator light group consisting of multiple LEDs, which indicates the battery level by the number of LEDs that are lit.

7. The mobile power bank based on Hall switch triggering for displaying power level according to claim 1, characterized in that: The USB connector interface type is one of Type-C, Micro USB, or Lightning.

8. The mobile power bank with power display based on Hall switch triggering according to claim 1, characterized in that: The outer casing has a soft magnetic sheet in the area where the storage section is located, which is used to magnetically absorb and store the USB connector.

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