Intelligent glasses and power management system and method thereof

Abstract

The invention discloses intelligent glasses and a power management system and method thereof, the power management system comprises a first battery module, a second battery module, an electric energy output module and a power control module, and the battery capacity of the first battery module is greater than that of the second battery module; the electric energy output module is used for being connected with a load and supplying power to the load according to first power supply electric energy output by the first battery module or first power supply electric energy output by the second battery module; the power management module is used for detecting power supply current output by the electric energy output module, controlling the second battery module to provide first power supply electric energy for the electric energy output module when the power supply current is larger than a preset value, and controlling the second battery module to provide the first power supply electric energy for the electric energy output module when the power supply current is smaller than or equal to the preset value. The reliability of the intelligent glasses can be improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a pair of smart glasses and a power management system and method thereof. Background Art

[0002] Smart glasses are a general term for wearable glasses that have independent operating devices like smartphones and can realize various functions through software installation. Smart glasses are easy to use and small in size. Smart glasses integrate the main control chip, communication module, display module, touch panel, camera, integrated circuit and power supply device on the glasses so that the smart glasses can work independently. Among them, the power supply device determines the battery life of smart glasses.

[0003] At present, the battery capacity and weight of smart glasses are key factors that determine whether AR (Augmented Reality) products provide a better experience. However, if the battery capacity is small enough, it cannot meet the battery life requirements of smart glasses. If the instantaneous discharge current is particularly large when processing complex applications, it will cause the battery overcurrent protection, directly causing the smart glasses to power off and shut down. The above situations will affect the reliability of smart glasses.

[0004] Therefore, the current technology still needs to be improved and enhanced. Summary of the invention

[0005] The present application provides a pair of smart glasses and a power management system and method thereof, which can effectively improve the reliability of the smart glasses.

[0006] The present application provides a power management system for smart glasses, the power management system comprising:

[0007] A first battery module and a second battery module, wherein the battery capacity of the first battery module is greater than the battery capacity of the second battery module;

[0008] An electric energy output module, the electric energy output module is connected to the first battery module and the second battery module respectively; the electric energy output module is used to be connected to a load and to supply power to the load according to the first power supply electric energy output by the first battery module or the first power supply electric energy output by the second battery module;

[0009] A power management module, the power management module is respectively connected to the first battery module, the second battery module and the power output module; the power management module is used to detect the power supply current output by the power output module, when the power supply current is greater than a preset value, the second battery module is controlled to provide the first power supply energy to the power output module, when the power supply current is less than or equal to the preset value, the second battery module is controlled to provide the first power supply energy to the power output module.

[0010] In some embodiments, the power management system of the smart glasses further comprises:

[0011] An electric energy input module, the electric energy input module is used to connect to an external power source, and the electric energy input module is respectively connected to the first battery module, the second battery module and the power management module; the electric energy input module is used to output a second power supply according to the external power source;

[0012] The power management module is further used to detect whether the power input module outputs the second power supply energy, and when the power input module does not output the second power supply energy, detect the power supply current output by the power output module.

[0013] In some embodiments, the smart glasses include an optical engine, a light propagation medium, and a frame; the optical engine is installed in the frame, and the optical engine is used to emit light; the light propagation medium is used to guide the light emitted by the optical engine to propagate;

[0014] The power management system also includes an auxiliary power supply module; the auxiliary power supply module is connected to the power output module; the auxiliary power supply module is used to absorb light that has not entered the light propagation medium, and convert light energy into electrical energy as the third power supply energy to power the first battery module and the second battery module.

[0015] In the power management system of the smart glasses in some embodiments, the power management module is also used to detect the remaining power of the second battery module and whether the auxiliary power supply module outputs the third power supply energy. When the remaining power of the second battery module is less than the preset power and the auxiliary power supply module does not output the third power supply energy, the first battery module is controlled to output the fourth power supply energy to power the second battery module.

[0016] In the power management system of the smart glasses in some embodiments, the power output module includes a DC-DC converter, and the DC-DC converter is respectively connected to the power management module, the first battery module, and the second battery module;

[0017] The DC-DC converter is used to supply power to the load according to the input first power supply energy.

[0018] The embodiment of the present application also provides a power management method for smart glasses, wherein the smart glasses include a first battery module and a second battery module, wherein the battery capacity of the first battery module is greater than the battery capacity of the second battery module; the power management method includes:

[0019] Powering the load according to the first power supply energy provided by the first battery module or the first power supply energy provided by the second battery module;

[0020] The power supply current of the load is detected. When the power supply current is greater than a preset value, the second battery module is controlled to output the first power supply energy; when the power supply current is less than or equal to the preset value, the first battery module is controlled to output the first power supply energy.

[0021] In some embodiments, the power management method of smart glasses further comprises a power input module, and the power management method further comprises:

[0022] Determining whether the power input module inputs the second power supply;

[0023] If not, the supply current of the load is detected.

[0024] In some embodiments, the power management method of smart glasses includes an optical engine, a light propagation medium, and a frame, wherein the optical engine is installed in the frame and is used to emit light; the light propagation medium is used to guide the propagation of the light emitted by the optical engine; and the power management method further includes:

[0025] The light that does not enter the light propagation medium is collected, and the light energy is converted into electric energy as the third power supply electric energy to supply power to the first battery module and the second battery module.

[0026] In some embodiments, the power management method of smart glasses further includes:

[0027] Determine whether the remaining power of the second battery module is less than a preset power, and whether the first battery module and the second battery module input a third power supply energy;

[0028] If the remaining power of the second battery module is less than the preset power, and the third power supply energy is not input to the first battery module and the second battery module, the first battery module is controlled to provide the fourth power supply energy to the second battery module.

[0029] An embodiment of the present application also provides a pair of smart glasses, which include the above-mentioned power management system.

[0030] The present application provides a kind of smart glasses and its power management system and method. The power management system of the smart glasses is provided with two battery modules with a large and a small battery capacity at the same time. The power management module detects the power supply current of the power output module. When the power supply current has an instantaneous high current, that is, the power supply current becomes greater than a preset value, the power management module controls the switching to the second battery module to provide the first power supply energy to the power output module to meet the instantaneous high current power demand. If the power supply current becomes less than or equal to the preset value, the power management module controls the switching back to the first battery module to provide the first power supply energy to the power output module. In this way, while meeting the battery life requirements of the smart glasses, it can also ensure the instantaneous high current power supply requirements and improve the reliability of the smart glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0032] Figure 1 This is a curve diagram of the current consumed by the current smart glasses within a certain period of time after being turned on.

[0033] Figure 2 This is a first structural block diagram of the power management system of the smart glasses provided in an embodiment of the present application.

[0034] Figure 3 This is a second structural block diagram of the power management system of the smart glasses provided in an embodiment of the present application.

[0035] Figure 4 This is a third structural block diagram of the power management system of the smart glasses provided in an embodiment of the present application.

[0036] Figure 5 A schematic diagram of the principles of the optical engine, light propagation medium and auxiliary power supply module in the smart glasses provided in an embodiment of the present application.

[0037] Figure 6 This is a fourth structural block diagram of the power management system of the smart glasses provided in an embodiment of the present application.

[0038] Figure 7 This is a fifth structural block diagram of the power management system of the smart glasses provided in an embodiment of the present application.

[0039] Figure 8 A schematic diagram of the first flow chart of the power management method for smart glasses provided in an embodiment of the present application.

[0040] Fig. 9 A second flow chart of the power management method for smart glasses provided in an embodiment of the present application.

[0041] Fig.10 A third flow chart of the power management method for smart glasses provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. The features specified as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0044] Smart glasses include but are not limited to AI glasses, camera glasses, XR glasses, audio glasses, Bluetooth glasses, etc. that are commonly seen on the market. Smart glasses are easy to use and small in size. Smart glasses integrate the main control chip, communication module, display module, touch panel, camera, integrated circuit and power supply device on the glasses so that the smart glasses can work independently. Among them, the power supply device determines the battery life of smart glasses.

[0045] The power supply device includes a battery. The energy density of the battery is closely related to the electrolyte, negative electrode material, diaphragm material, and lithium-ion material inside the battery. The capacity of the battery is also related to the volume. When smart glasses become lighter and lighter, the volume of the battery will become smaller and smaller, and the capacity will also become smaller and smaller. In order to ensure that the use time of smart glasses is long enough, the battery capacity needs to be large enough. The only thing that can be improved is the battery energy density, and improving the battery energy density requires increasing the chemical activity of the substances inside the battery. However, after the chemical activity is increased, if a large instantaneous current is encountered, materials such as the diaphragm and the negative electrode will undergo irreversible polarization, which can easily damage the battery, resulting in lower and lower battery capacity, and it cannot meet the battery life requirements of smart glasses.

[0046] Among them, the instantaneous large current is usually in the millisecond level, and the current rises in steps. Figure 1 , Figure 1 This is a curve diagram of the current consumed by the current smart glasses within a certain period of time after being turned on; Figure 1 The horizontal axis is time in ms, and the vertical axis is current in mA. Figure 1 It can be seen that the maximum peak current, that is, the maximum instantaneous current, is 1600mAh. The current battery capacity of smart glasses is 250mAh, which means that the maximum peak current is 6.4 times the battery capacity. At this time, the battery must meet the discharge current of 7C (C is used to indicate the battery charge and discharge capacity ratio) to be relatively safe. This peak discharge time is very short, generally tens of milliseconds, and the actual power consumption is very small. Compared with the discharge of a few seconds or minutes, it is a transient state, so it is called transient current. If a battery with such performance needs to be matched, the battery material can only be changed to a more stable one, that is, the battery material has a lower activity to avoid polarization caused by instantaneous large current, but this greatly reduces the energy density of the battery and reduces the overall battery capacity.

[0047] See also Figure 2 , Figure 2 The first structural block diagram of the power management system of the smart glasses provided in the embodiment of the present application. The present embodiment provides a power management system of the smart glasses, which includes a first battery module 11, a second battery module 12, a battery output module and a power management module 14; the power output module 13 is connected to the first battery module 11 and the second battery module 12 respectively; the power management module 14 is connected to the first battery module 11, the second battery module 12 and the power output module 13 respectively.

[0048] Among them, the battery capacity of the first battery module 11 is greater than the battery capacity of the second battery module 12; the power output module 13 is used to connect to the load 10, and is used to power the load 10 according to the first power supply power output by the first battery module 11 or the first power supply power output by the second battery module 12; the power management module 14 is used to detect the power supply current output by the power output module 13, when the power supply current is greater than a preset value, the second battery module 12 is controlled to provide the first power supply power to the power output module 13, when the power supply current is less than or equal to the preset value, the second battery module 12 is controlled to provide the first power supply power to the power output module 13.

[0049] In this embodiment, the first battery module 11 is a large-capacity battery module, and the second battery module 12 is a small-capacity battery module. Two battery modules are set at the same time. For the small-capacity battery module, materials with better stability can be used to prepare it, so as to meet the instantaneous large current discharge requirements; for the large-capacity battery module, materials with higher activity can be used to improve the energy density, meet the conventional discharge requirements, and meet the battery life requirements of the smart glasses.

[0050] In actual application, in the initial state of the smart glasses being turned on, the first battery module 11 provides the first power supply to the power output module 13. The power management module 14 detects the power supply current of the power output module 13. When the power supply current has an instantaneous high current, that is, the power supply current becomes greater than the preset value, the power management module 14 controls the switch to the second battery module 12 to provide the first power supply to the power output module 13 to meet the instantaneous high current power demand. If the power supply current becomes less than or equal to the preset value, the power management module 14 controls the switch back to the first battery module 11 to provide the first power supply to the power output module 13. In this way, while meeting the battery life requirements of the smart glasses, it can also ensure the instantaneous high current power supply requirements and improve the reliability of the smart glasses.

[0051] See also Figure 3 , Figure 3A second structural block diagram of the power management system of the smart glasses provided in the embodiment of the present application. In some embodiments, the first battery module 11 includes a first discharge circuit 111 and a first battery 112, and the second battery module 12 includes a second discharge circuit 121 and a second battery 122; the first battery 112 has a battery capacity greater than that of the second battery 122. The first discharge circuit 111 is connected between the power output module 13 and the first battery 112, and the second discharge circuit 121 is connected between the power output module 13 and the second battery 122. When the first battery 112 is required to discharge as a power source, the first discharge circuit 111 is controlled to be turned on, otherwise the first discharge circuit 111 is controlled to be disconnected; when the second battery 122 circuit is required to discharge as a power source, the second discharge circuit 121 is controlled to be turned on, otherwise the second discharge circuit 121 is controlled to be disconnected.

[0052] See also Figure 4 , Figure 4 The third structural block diagram of the power management system of the smart glasses provided in the embodiment of the present application. In some embodiments, the power management system further includes a power input module 15, the first battery module 11 further includes a first charging circuit 113, the second battery module 12 further includes a second charging circuit 123, the first charging circuit 113 is connected between the first battery 112 and the power input module 15, and the second charging circuit 123 is connected between the second battery 122 and the power input module 15; the power input module 15 is also connected to the power management module 14.

[0053] The power input module 15 is used to connect to an external power source, and the power input module 15 is used to output a second power supply according to the external power source. The power input module 15 can be a Type-C interface in the smart glasses, and the power management module 14 will detect whether the Type-C interface is connected to an external power source. When the Type-C interface is connected to an external power source, the power management module can control the first discharge circuit 111 and the second discharge circuit 121 to be disconnected, and the power output module 13 is provided with a second power supply by an external power source, which is equivalent to the load 10 of the smart glasses being directly powered by an external power source. At the same time, the first battery 112 and the second battery 122 are charged respectively through the first charging circuit 113 and the second charging circuit 123 through the external power source, so that the first battery 112 and the second battery 122 store power.

[0054] When the Type-C interface is not connected to an external power source, the first battery 112 supplies power to the power output module 13 through the first discharge circuit 111. At the same time, the power management module 14 monitors the power supply current of the power output module 13, so as to switch to the second battery 122 for power supply when a transient high current appears in the power supply current, and switch to the first battery 112 for power supply when the power supply current is normally powered, thereby meeting the battery life requirements of the smart glasses while also meeting the instantaneous high current power demand, ensuring the battery life and improving the reliability of the smart glasses.

[0055] See also Figure 5 and Figure 6 , Figure 5 A schematic diagram of the principle of the optical engine 21, the light propagation medium 22 and the auxiliary power supply module 16 in the smart glasses provided in an embodiment of the present application; Figure 6 The fourth structural block diagram of the power management system of the smart glasses provided in the embodiment of the present application. In some embodiments, the smart glasses include an optical engine 21, a light propagation medium 22 and a frame, the optical engine 21 is installed in the frame, the optical engine 21 is used to emit light; the light propagation medium 22 is used to guide the propagation of the light emitted by the optical engine 21. Among them, the power management system also includes an auxiliary power supply module 16, the auxiliary power supply module 16 is connected to the power output module 13; the auxiliary power supply module 16 is used to absorb light that has not entered the light propagation medium 22, and convert light energy into electrical energy as the third power supply energy to power the first battery module 11 and the second battery module 12.

[0056] Among them, the optical machine 21 includes an optical engine 211 and a lens 212. The lens 212 converges the light emitted by the optical engine 211 to the optical relay medium; the optical transmission medium 22 includes a coupling grating 221 and an optical waveguide 222. The coupling grating 221 is arranged between the optical machine 21 and the optical waveguide 222. The coupling grating 221 is used to change the direction of the light so that the light enters the optical waveguide 222. The auxiliary power supply module 16 can convert the light energy that has not entered the optical waveguide 222 after passing through the coupling grating 221 into electrical energy as the third power supply energy. It is equivalent to collecting the light that is not absorbed and enters the optical transmission medium 22 in the smart glasses to charge the first battery 112 and the second battery 122, further improving the endurance of the smart glasses. Of course, since the battery capacity of the second battery 122 is relatively small, the auxiliary power supply module 16 can give priority to supplying power to the second battery 122. If the second battery 122 is fully charged, the first battery 112 will be charged.

[0057] The photoelectric conversion of the auxiliary power supply module 16 utilizes the silicon-to-electricity conversion principle of silicon atoms, where light generates electron transitions on silicon atoms to form current.

[0058] In some embodiments, the power management module 14 is also used to detect the remaining power of the second battery module 12, that is, the remaining power of the second battery 122, and whether the auxiliary power supply module 16 outputs the third power supply energy. The power management module 14 detects the remaining power of the second battery 122 mainly by detecting the output voltage of the second battery 122. When the output voltage of the second battery 122 is less than a certain value, it indicates that the remaining power of the second battery 122 is less than a preset value. When the power management module 14 detects whether the auxiliary power supply module 16 outputs the third power supply energy, it can detect whether the output voltage of the auxiliary power supply module 16 is greater than the preset voltage. If the output voltage of the auxiliary power supply module 16 is greater than the preset voltage, it indicates that the auxiliary power supply module 16 outputs the third power supply energy.

[0059] When the remaining power of the second battery module 12 is less than the preset power, and the auxiliary power supply module 16 does not output the third power supply energy, the power management module 14 controls the first battery module 11 to output the fourth power supply energy to supply power to the second battery module 12. That is, the power management module 14 controls the first battery 112 to charge the second battery 122 through the first discharge circuit 111 and the second charging circuit 123, thereby ensuring the remaining power of the second battery 122 and ensuring that the second battery 122 can be used at any time.

[0060] As an embodiment, in order to ensure that the second battery 122 can meet the instantaneous large current supply, it can be ensured that the remaining power of the second battery 122 is greater than or equal to half of the rated capacity.

[0061] See also Figure 7 , Figure 7 The fifth structural block diagram of the power management system of the smart glasses provided in the embodiment of the present application. In some embodiments, the power management system further includes a boost module 17, the boost module 17 and the auxiliary power supply module 16, and the boost module 17 can boost the voltage output by the auxiliary power supply module 16 before outputting it to ensure that the first battery 112 and the second battery 122 can be charged.

[0062] As an embodiment, the power output module includes a DC-DC converter, and the DC-DC converter is respectively connected to the power management module 14, the first battery module 11 and the second battery module 12. Specifically, the DC-DC converter is respectively connected to the first discharge circuit 111, the second discharge circuit 121 and the power input module 15. The DC-DC converter is used to supply power to the load 10 according to the input first power supply power. When the power output module 13 is not connected to external power, the first battery 112 supplies power to the DC-DC converter through the first discharge circuit 111, and the power management module 14 monitors the power supply current output by the DC-DC converter accordingly. When the power supply current is less than or equal to a preset value, such as 3 times the battery capacity of the first battery 112, that is, less than or equal to 3C, the first battery 112 is used as a power source to supply power to the load 10. When the power supply current is greater than 3 times the battery capacity of the first battery 112, that is, greater than 3C, the second battery 122 is controlled to be a short-term power source.

[0063] The power management system of the smart glasses in the present application controls the switching to a small-capacity battery as a power source for discharge when a large current is detected, and controls the switching to a large-capacity battery as a power source for discharge when a small current is detected, thereby using batteries of different capacities to supply power for different currents, thereby increasing the total battery capacity in the smart glasses while ensuring a limited volume. At the same time, the light source of the light engine itself is used to charge the battery in a directional manner, which can ensure that the battery life is extended.

[0064] See also Figure 8 , Figure 8 The first flow chart of the power management method of the smart glasses provided in the embodiment of the present application. The embodiment of the present application also provides a power management method of the smart glasses, the smart glasses comprising a first battery module and a second battery module, wherein the battery capacity of the first battery module is greater than the battery capacity of the second battery module. The power management method comprises:

[0065] 100. Powering a load according to the first power supply energy provided by the first battery module or the first power supply energy provided by the second battery module;

[0066] 200. Detect the power supply current of the load. When the power supply current is greater than a preset value, control the second battery module to output the first power supply energy; when the power supply current is less than or equal to the preset value, control the first battery module to output the first power supply energy.

[0067] In this embodiment, the first battery module is a large-capacity battery module, and the second battery module is a small-capacity battery module. Two battery modules are set at the same time. Therefore, the small-capacity battery module can be prepared using materials with better stability to meet the instantaneous large current discharge requirements; for the large-capacity battery module, more active materials can be used to improve the energy density, meet the conventional discharge requirements, and meet the battery life requirements of the smart glasses.

[0068] In actual application, in the initial state of the smart glasses being turned on, the first battery module provides the first power supply energy to the power output module. At the same time, the power supply current of the load is detected. When the power supply current has an instantaneous high current, that is, the power supply current becomes greater than the preset value, the control switches to the second battery module to provide the first power supply energy to meet the instantaneous high current power demand. If the power supply current becomes less than or equal to the preset value, the control switches back to the first battery module to provide the first power supply energy. In this way, while meeting the battery life requirements of the smart glasses, it can also ensure the instantaneous high current power supply requirements and improve the reliability of the smart glasses.

[0069] See also Fig. 9 , Fig. 9 A second flow chart of the power management method of the smart glasses provided in the embodiment of the present application. In some embodiments, the smart glasses further include a power input module, and the power management method further includes:

[0070] 300. Determine whether the power input module inputs the second power supply energy;

[0071] 400. If not, detect the supply current of the load.

[0072] The power input module can be a Type-C interface in the smart glasses. After the smart glasses are turned on, they will determine whether the Type-C interface is connected to an external power source. When the Type-C interface is connected to an external power source, the external power source will power the smart glasses. When the Type-C interface is not connected to an external power source, the first battery module will power the smart glasses, and at the same time, the power supply current of the load will be detected to facilitate subsequent switching to the first battery or the second battery as the power supply.

[0073] In some embodiments, the smart glasses include an optical engine, a light propagation medium and a frame, the optical engine is installed in the frame, and the optical engine is used to emit light; the light propagation medium is used to guide the propagation of light emitted by the optical engine; the power management method also includes: collecting light that has not entered the light propagation medium, and converting the light energy into electrical energy as a third power supply energy to power the first battery module and the second battery module.

[0074] In this embodiment, the light of the light propagation medium is collected and converted into electrical energy to charge the first battery module and the second battery module, thereby further improving the battery life of the smart glasses.

[0075] See also Fig.10 , Fig.10 The third flow chart of the power management method of the smart glasses provided in the embodiment of the present application. In some embodiments, the power management method further includes:

[0076] 500. Determine whether the remaining power of the second battery module is less than a preset power, and whether the first battery module and the second battery module input a third power supply energy;

[0077] 600. If the remaining power of the second battery module is less than the preset power, and the third power supply energy is not input to the first battery module and the second battery module, control the first battery module to provide the fourth power supply energy to the second battery module.

[0078] The power management method also needs to detect the remaining power of the second battery module. When the remaining power of the second battery module is less than the preset power, and neither the first battery module nor the second battery module outputs the third power supply energy, it indicates that the remaining power of the second battery module is insufficient and there is no photoelectric conversion energy input. The first battery module is controlled to output the fourth power supply energy to power the second battery module, thereby ensuring the remaining power of the second battery and ensuring that the second battery module can be used at any time.

[0079] The embodiment of the present application further provides a pair of smart glasses, which include the above-mentioned power management system. Since the power management system has been described in detail above, it will not be repeated here.

[0080] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The power management system of the smart glasses provided in the embodiments of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power management system for smart glasses, characterized in that: The power management system comprises: a first battery module and a second battery module, wherein the battery capacity of the first battery module is greater than the battery capacity of the second battery module; An electric energy output module, the electric energy output module is connected to the first battery module and the second battery module respectively; the electric energy output module is used to be connected to a load and to supply power to the load according to the first power supply power output by the first battery module or the first power supply power output by the second battery module; A power management module, wherein the power management module is respectively connected to the first battery module, the second battery module and the power output module; the power management module is used to detect the power supply current output by the power output module, and when the power supply current is greater than a preset value, the second battery module is controlled to provide the first power supply energy to the power output module; when the power supply current is less than or equal to the preset value, the second battery module is controlled to provide the first power supply energy to the power output module.

2. The power management system for smart glasses according to claim 1, characterized in that: The power management system further comprises: An electric energy input module, the electric energy input module is used to connect to an external power source, the electric energy input module is respectively connected to the first battery module, the second battery module and the power management module; the electric energy input module is used to output a second power supply according to the external power source; The power management module is further used to detect whether the power input module outputs the second power supply energy, and when the power input module does not output the second power supply energy, detect the power supply current output by the power output module.

3. The power management system of smart glasses according to claim 1 or 2, characterized in that: The smart glasses include an optical engine, a light propagation medium and a frame; the optical engine is installed in the frame, and the optical engine is used to emit light; the light propagation medium is used to guide the propagation of the light emitted by the optical engine; The power management system also includes an auxiliary power supply module; the auxiliary power supply module is connected to the power output module; the auxiliary power supply module is used to absorb light that has not entered the light propagation medium, and convert light energy into electrical energy as a third power supply energy to power the first battery module and the second battery module.

4. The power management system for smart glasses according to claim 3, characterized in that: The power management module is also used to detect the remaining power of the second battery module and whether the auxiliary power supply module outputs the third power supply energy. When the remaining power of the second battery module is less than the preset power and the auxiliary power supply module does not output the third power supply energy, the first battery module is controlled to output the fourth power supply energy to power the second battery module.

5. The power management system for smart glasses according to claim 4, characterized in that: The power output module includes a DC-DC converter, and the DC-DC converter is respectively connected to the power management module, the first battery module and the second battery module; The DC-DC converter is used to supply power to the load according to the input first power supply energy.

6. A power management method for smart glasses, characterized in that: The smart glasses include a first battery module and a second battery module, wherein the battery capacity of the first battery module is greater than the battery capacity of the second battery module; The power management method comprises: supplying power to a load according to the first power supply energy provided by the first battery module or the first power supply energy provided by the second battery module; The power supply current of the load is detected, and when the power supply current is greater than a preset value, the second battery module is controlled to output the first power supply energy; when the power supply current is less than or equal to the preset value, the first battery module is controlled to output the first power supply energy.

7. The power management method according to claim 6, characterized in that: The smart glasses further include a power input module, and the power management method further includes: Determining whether the power input module inputs the second power supply energy; If not, the supply current of the load is detected.

8. The power management method according to claim 6 or 7, characterized in that: The smart glasses include an optical engine, a light propagation medium and a frame, wherein the optical engine is installed in the frame and is used to emit light; The light propagation medium is used to guide the propagation of light emitted by the optical machine; the power management method also includes: The light that does not enter the light propagation medium is collected, and the light energy is converted into electric energy as the third power supply electric energy to supply power to the first battery module and the second battery module.

9. The power management method according to claim 8, characterized in that: The power management method further includes: Determining whether the remaining power of the second battery module is less than a preset power, and whether the first battery module and the second battery module input the third power supply energy; If the remaining power of the second battery module is less than the preset power, and the first battery module and the second battery module do not input the third power supply energy, the first battery module is controlled to provide the fourth power supply energy to the second battery module.

10. A pair of smart glasses, characterized in that: Comprising a power management system as described in any one of claims 1-5.

Images