A head-mounted display device continuous power supply system and power supply method

Abstract

The application relates to the technical field of power supply, and discloses a head-mounted display device continuous power supply system and a power supply method, the continuous power supply system comprising a battery, a head-mounted display device, a capacitor and a control circuit board, the battery is used for supplying power for the head-mounted display device, the capacitor can accept power supply of a power supply body and be charged, the power supply body is the battery or the head-mounted display device; when the battery enters a low power protection state or is detached from a connecting interface, the capacitor can supply power for the head-mounted display device; the head-mounted display device can be continuously kept in an electric state, continuous endurance is realized, the volume of the head-mounted display device is reduced, and the weight is reduced; there is no waiting charging time, a charger utilization rate is high, requirements on the charger are reduced, more expensive fast charging is not needed, and charging is safer; the battery cannot cause life attenuation or damage of the whole head-mounted display product due to life attenuation or damage, a normal battery can be directly replaced, and after-sales is convenient.

Description

Technical Field

[0001] This invention relates to the technical field of power supply systems, and in particular to a continuous power supply system and method for head-mounted display devices. Background Technology

[0002] Head-mounted displays strive for thinner and lighter designs, but advancements in computing power, display resolution, frame rate, and other performance aspects, along with increased functionality, have resulted in persistently high power consumption. This makes it difficult to reduce battery capacity and size. Therefore, the size, weight, and battery life of head-mounted displays have become crucial factors in the user experience.

[0003] Current head-mounted displays suffer from short battery life and long charging times. This often fails to meet user needs, as the long wait for recharging after the battery is depleted results in a poor user experience. Increasing battery life using current methods requires larger batteries, which increases weight and size, reducing wearing comfort. Conversely, reducing battery size to improve comfort leads to shorter battery life and frequent charging delays. Therefore, finding a way to achieve continuous use without recharging while simultaneously reducing the weight and size of head-mounted displays is a pressing issue in this field.

[0004] The existing common power supply solutions are only the following: 1. It is not battery powered and is connected via wired connection; it cannot be used wirelessly.

[0005] 2. Powered by a single battery, when the battery is low, it must be connected to a power cord or fully charged before use.

[0006] 3. Powered by a single battery, the product must be charged when the battery is low, or the product must be removed from the head and disassembled to replace the battery.

[0007] Existing solutions all have one or more of the following drawbacks: 1. Large battery capacity, large and bulky size, long battery life.

[0008] 2. Small battery capacity, small size, lightweight, and short battery life.

[0009] 3. To achieve continuous battery life, you can only use the device while it's connected to the charging cable, which means you need to keep the charging cable connected at all times. When the charging cable is not connected, you must wait for it to recharge before you can use it again. Summary of the Invention

[0010] The purpose of this invention is to provide a continuous power supply system and method for head-mounted display devices, aiming to solve the problem that the existing technology lacks a continuous power supply system for head-mounted display devices that can be used continuously without waiting for charging, and can also reduce the weight and size of the head-mounted display device.

[0011] In a first aspect, this application provides a continuous power supply system for a head-mounted display device, comprising: Battery; A head-mounted display device having a connection interface capable of being detachably connected to the battery; A capacitor, wherein the capacitor is disposed within the head-mounted display device; The battery is used to power the head-mounted display device, and the capacitor can receive and charge the power supply from the power source, which is either the battery or the head-mounted display device. The control circuit board is located inside the head-mounted display device; The capacitor can supply power to the head-mounted display device when the battery enters a low-power protection state or is removed from the connection interface.

[0012] Furthermore, when the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode. When the head-mounted display device is in a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

[0013] Furthermore, the control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a MOS transistor Q1 electrically connected to the connection interface, a MOS transistor Q2 electrically connected to the MOS transistor Q1, a resistor R5 electrically connected to the MOS transistor Q2, a capacitor C1 electrically connected to the resistor R5, a diode D1 connected in parallel with the resistor R5, a transistor Q3, a resistor R3, and a detection element. The MOS transistor Q2 is electrically connected to the head-mounted display device.

[0014] Furthermore, the control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a power management IC chip U1, a capacitor C2, a resistor R6, and a capacitor C3. The power management IC chip U1 has five pins, namely pin 1, pin 2, pin 3, pin 4, and pin 5. Pin 1 of the power management IC chip U1 is electrically connected to the connection interface, pin 5 of the power management IC chip U1 is electrically connected to the head-mounted display device, pin 2 of the power management IC chip U1 is electrically connected to the first end of the capacitor C2, the second end of the capacitor C2 is electrically connected to the connection interface, pin 3 of the power management IC chip U1 is electrically connected to the first end of the resistor R6, the second end of the resistor R6 is electrically connected to the first end of the capacitor C3, the second end of the capacitor C3 is electrically connected to the head-mounted display device, and pin 4 of the power management IC chip U1 is used to output the battery power information and the capacitor C3 power information to the head-mounted display device.

[0015] Secondly, this application provides a method for continuously supplying power to a head-mounted display device, which uses the aforementioned continuous power supply system for head-mounted display devices to supply power to the head-mounted display device. The continuous power supply method specifically includes: When the battery is electrically connected to the connection interface of the head-mounted display device, the battery supplies power to the operation of the head-mounted display device, and the power supply charges the built-in capacitor of the head-mounted display device. The power supply can be either the battery or the head-mounted display device. The head-mounted display device detects the battery voltage. When the detected battery voltage is lower than a threshold, the head-mounted display device displays that the battery is low. When the detected battery voltage is 0, it indicates that the battery has entered a low-power protection state or has been removed from the connection interface. The capacitor supplies power to the head-mounted display device. When the battery with energy is reconnected to the connection interface, it powers the head-mounted display.

[0016] Furthermore, when the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

[0017] Furthermore, when the powered battery is reconnected to the connection interface, the battery supplies power to the head-mounted display device, and the head-mounted display device enters normal mode and normal state.

[0018] Compared with existing technologies, the above-described continuous power supply system and method for head-mounted display devices can continuously keep the head-mounted display device powered, achieving continuous battery life; it can reduce the size and weight of the head-mounted display device; there is no waiting time for charging, the charger utilization rate is higher, thereby reducing the requirements for the charger, eliminating the need for more expensive fast charging, and charging is also safer; battery degradation or damage will not cause the entire head-mounted display product's lifespan to decrease or be damaged, as a normal battery can be directly replaced, making after-sales service more convenient and more environmentally friendly. Attached Figure Description

[0019] Figure 1 This is a structural block diagram of a continuous power supply system for a head-mounted display device provided in an embodiment of the present invention; Figure 2 This is a circuit diagram of a continuous power supply system for a head-mounted display device provided in an embodiment of the present invention; Figure 3 This is a structural block diagram of another head-mounted display device continuous power supply system provided in an embodiment of the present invention; Figure 4 This is a circuit diagram of another head-mounted display device continuous power supply system provided in an embodiment of the present invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] Reference Figure 1-4 The diagram shows a preferred embodiment of the present invention.

[0027] In a first aspect, this application provides a continuous power supply system for a head-mounted display device, comprising: Battery; A head-mounted display device having a connection interface capable of being detachably connected to the battery; A capacitor, wherein the capacitor is disposed within the head-mounted display device; The battery is used to power the head-mounted display device, and the capacitor can receive and charge the power supply from the power source, which is either the battery or the head-mounted display device. The control circuit board is located inside the head-mounted display device; The capacitor can supply power to the head-mounted display device when the battery enters a low-power protection state or is removed from the connection interface.

[0028] The aforementioned continuous power supply system for head-mounted displays can continuously keep the head-mounted display powered, achieving continuous battery life; it can reduce the size and weight of the head-mounted display; there is no waiting time for charging, the charger is utilized more efficiently, thereby reducing the requirements for the charger, eliminating the need for more expensive fast charging, and making charging safer; the battery's lifespan degradation or damage will not cause the lifespan of the entire head-mounted display product to degrade or be damaged, as a normal battery can be directly replaced, making after-sales service more convenient and more environmentally friendly.

[0029] Furthermore, when the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode. When the head-mounted display device is in a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

[0030] See Figure 1 and Figure 2As shown, the control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a MOS transistor Q1 electrically connected to the connection interface, a MOS transistor Q2 electrically connected to the MOS transistor Q1, a resistor R5 electrically connected to the MOS transistor Q2, a capacitor C1 electrically connected to the resistor R5, a diode D1 connected in parallel with the resistor R5, a transistor Q3, a resistor R3, and a detection element. The drain of the MOS transistor Q1 is electrically connected to the connection interface, the source of the MOS transistor Q1 is electrically connected to the source of the MOS transistor Q2, the drain of the MOS transistor Q2 is electrically connected to the first terminal of the resistor R5, the second terminal of the resistor R5 is electrically connected to the positive terminal of the capacitor C1, the anode of the diode D1 is electrically connected to the second terminal of the resistor R5, the cathode of the diode D1 is electrically connected to the first terminal of the resistor R5, and the drain of the MOS transistor Q2 is electrically connected to the head-mounted display device.

[0031] When the battery is connected (i.e., the battery is electrically connected to the connection interface), Q1 / Q2 conducts, charging capacitor C1 through current limiting R5, and simultaneously supplying power to the head-mounted display circuit connected to the power supply. At this time, Detect is a detection signal connected to the head-mounted display device. When Detect is high, the head-mounted display device uses an ADC to determine the current battery voltage. When the detected voltage is below a threshold, the head-mounted display device indicates low battery. When the detected voltage is 0, it indicates low battery protection or that the battery has been removed, and immediately enters low-power mode. In this mode, C1 supplies power through D1 to maintain the head-mounted display device's switch to low-power mode. The system core continues to run, but major power-consuming components such as the camera and display screen are temporarily suspended. When the battery is connected again, Q1 / Q2 conducts, C1 charges, the head-mounted display device detects a high level on Detect, exits low-power mode, and immediately wakes up for use. Because the capacitor has sufficient charge to sustain the battery replacement time, the wake-up time after battery replacement in this embodiment is only about 1 second, far less than the waiting time for charging.

[0032] See Figure 3 and Figure 4As shown, the control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a power management IC chip U1, a capacitor C2, a resistor R6, and a capacitor C3. The power management IC chip U1 has 5 pins, namely pin 1, pin 2, pin 3, pin 4, and pin 5. Pin 1 of the power management IC chip U1 is electrically connected to the connection interface. Pin 5 of the power management IC chip U1 is electrically connected to the head-mounted display device. Pin 2 of the power management IC chip U1 is electrically connected to the first end of the capacitor C2. The second end of the capacitor C2 is electrically connected to the connection interface. Pin 3 of the power management IC chip U1 is electrically connected to the first end of the resistor R6. The second end of the resistor R6 is electrically connected to the first end of the capacitor C3. The second end of the capacitor C3 is electrically connected to the head-mounted display device. Pin 4 of the power management IC chip U1 is used to output the battery power information and the capacitor C3 power information to the head-mounted display device.

[0033] U1 is a power management IC chip that manages the charging of capacitor C3 and reads battery and capacitor levels. When the battery is connected, pin 5 of the power management IC chip U1 charges capacitor C3 and simultaneously supplies power to the core power supply of the head-mounted display connected to the POWER. Pin 4 of the power management IC chip U1 also outputs battery and capacitor level information to the head-mounted display. When the head-mounted display detects low battery levels via OUT1, it prompts the user to replace the battery. When the battery is in low-power protection mode or removed, capacitor C3 provides power. In this case, screen brightness decreases, frame rate decreases, and CPU frequency is reduced to maintain basic operation, prompting the user to reinstall the battery as soon as possible. When low battery levels are detected in capacitor C3, the display enters a lower-power sleep mode. When the battery is reconnected, the head-mounted display resumes normal operation after reading the battery level information. This embodiment allows for uninterrupted use during rapid battery swapping. If the battery swapping time is exceeded, normal operation can be resumed immediately after replacement.

[0034] Secondly, this application provides a method for continuously supplying power to a head-mounted display device, which uses the aforementioned continuous power supply system for head-mounted display devices to supply power to the head-mounted display device. The continuous power supply method specifically includes: When the battery is electrically connected to the connection interface of the head-mounted display device, the battery supplies power to the operation of the head-mounted display device, and the power supply charges the built-in capacitor of the head-mounted display device. The power supply can be either the battery or the head-mounted display device. The head-mounted display device detects the battery voltage. When the detected battery voltage is lower than a threshold, the head-mounted display device displays that the battery is low. When the detected battery voltage is 0, it indicates that the battery has entered a low-power protection state or has been removed from the connection interface. The capacitor supplies power to the head-mounted display device. When the battery with energy is reconnected to the connection interface, it powers the head-mounted display.

[0035] The aforementioned method for continuously powering a head-mounted display device can keep the device powered, enabling continuous battery life; it can reduce the size and weight of the device; it eliminates charging time, increasing charger utilization and reducing charger requirements, eliminating the need for more expensive fast chargers, and making charging safer; and it prevents the entire head-mounted display product from experiencing lifespan degradation or damage due to battery lifespan decay or damage, allowing for direct replacement of a known good battery, making after-sales service more convenient and environmentally friendly.

[0036] Furthermore, when the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

[0037] Furthermore, when the powered battery is reconnected to the connection interface, the battery supplies power to the head-mounted display device, and the head-mounted display device enters normal mode and normal state.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A continuous power supply system for a head-mounted display device, characterized in that, include: Battery; A head-mounted display device having a connection interface capable of being detachably connected to the battery; A capacitor, wherein the capacitor is disposed within the head-mounted display device; The battery is used to power the head-mounted display device, and the capacitor can receive and charge the power supply from the power source, which is either the battery or the head-mounted display device. The control circuit board is located inside the head-mounted display device; When the battery enters a low-power protection state or is disconnected from the connection interface, the capacitor can supply power to the head-mounted display device; The control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a MOSFET Q1 electrically connected to the connection interface, a MOSFET Q2 electrically connected to the MOSFET Q1, a resistor R5 electrically connected to the MOSFET Q2, a capacitor C1 electrically connected to the resistor R5, a diode D1 connected in parallel with the resistor R5, a transistor Q3, a resistor R3, and a detector element. The drain of the MOSFET Q1 is electrically connected to the connection interface, the source of the MOSFET Q1 is electrically connected to the source of the MOSFET Q2, the drain of the MOSFET Q2 is electrically connected to the first terminal of the resistor R5, the second terminal of the resistor R5 is electrically connected to the positive terminal of the capacitor C1, and the diode D1 is connected in parallel with the resistor R5. The anode of diode D1 is electrically connected to the second terminal of R5; the cathode of diode D1 is electrically connected to the first terminal of R5; the drain of MOSFET Q2 is electrically connected to the head-mounted display device; the cathode of capacitor C1 is electrically connected to the emitter of transistor Q3; the emitter of transistor Q3 is grounded; the collector of transistor Q3 is electrically connected to the gate of MOSFET Q1; the gate of MOSFET Q1 is electrically connected to the gate of MOSFET Q2; the base of transistor Q3 is electrically connected to the first terminal of resistor R3; the second terminal of resistor R3 is electrically connected to the detection element; the second terminal of resistor R3 is electrically connected to the first terminal of resistor R1; and the second terminal of resistor R1 is electrically connected to the connection interface.

2. The continuous power supply system for a head-mounted display device as described in claim 1, characterized in that, When the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode. When the head-mounted display device is in a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

3. The continuous power supply system for a head-mounted display device as described in claim 1, characterized in that, The control circuit board has a control circuit. When the power supply is the battery, the control circuit includes a power management IC chip U1, a capacitor C2, a resistor R6, and a capacitor C3. The power management IC chip U1 has 5 pins, namely pin 1, pin 2, pin 3, pin 4, and pin 5. Pin 1 of the power management IC chip U1 is electrically connected to the connection interface. Pin 5 of the power management IC chip U1 is electrically connected to the head-mounted display device. Pin 2 of the power management IC chip U1 is electrically connected to the first end of the capacitor C2. The second end of the capacitor C2 is electrically connected to the connection interface. Pin 3 of the power management IC chip U1 is electrically connected to the first end of the resistor R6. The second end of the resistor R6 is electrically connected to the first end of the capacitor C3. The second end of the capacitor C3 is electrically connected to the head-mounted display device. Pin 4 of the power management IC chip U1 is used to output battery power information and capacitor C3 power information to the head-mounted display device.

4. A method for continuously supplying power to a head-mounted display device, characterized in that, The head-mounted display device is powered by the continuous power supply system for the head-mounted display device according to any one of claims 1-3, wherein the continuous power supply method specifically includes: When the battery is electrically connected to the connection interface of the head-mounted display device, the battery supplies power to the operation of the head-mounted display device, and the power supply charges the built-in capacitor of the head-mounted display device. The power supply can be either the battery or the head-mounted display device. The head-mounted display device detects the battery voltage. When the detected battery voltage is lower than a threshold, the head-mounted display device displays a low battery level. When the detected battery voltage is 0, it indicates that the battery has entered a low-power protection state or has been removed from the connection interface. The capacitor supplies power to the head-mounted display device. When the battery with energy is reconnected to the connection interface, it powers the head-mounted display.

5. A method for continuously supplying power to a head-mounted display device as described in claim 4, characterized in that, When the capacitor supplies power to the head-mounted display device, the head-mounted display device enters a low-power mode, the core system of the head-mounted display device runs, and the head-mounted display device enters a sleep state.

6. A method for continuously supplying power to a head-mounted display device as described in claim 4, characterized in that, When the powered battery is reconnected to the connection interface, the battery powers the head-mounted display, and the head-mounted display enters normal mode and normal operation.

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