Dual battery power supply system and electronic device

Abstract

The application discloses a double-battery power supply system and electronic equipment, and relates to the field of battery power supply. In the system, the first battery module and the second battery module can both supply power to the power consumption system, and the length of the second wire between the second battery module and the power consumption system is greater than the length of the first wire between the first battery module and the power consumption system. Therefore, a voltage boosting module is arranged for the second battery module to boost the output voltage of the second battery module, and the difference between the voltage of the preset voltage after the voltage boosting and the power supply voltage of the power consumption system is not greater than a preset value, that is, even if the output voltage of the second battery module is low, the power consumption system can be normally powered through the voltage boosting module and the second wire, the problem that the available capacity of the battery is reduced due to the large voltage drop on the wire caused by the long distance between the battery and the power consumption system is solved, and the endurance of the electronic equipment is improved.

Description

Technical Field

[0001] This application relates to the field of battery power supply, and in particular to a dual-battery power supply system and electronic device. Background Technology

[0002] AR (Augmented Reality) and VR (Virtual Reality) electronic devices are placing increasingly higher demands on the power supply system for long battery life. In the past, multi-battery solutions typically involved connecting two batteries in parallel or series to directly power the system. If one of the batteries is far from the system, a large voltage drop will occur on the wires connecting the battery and the system, reducing the battery's usable capacity and resulting in lower battery life for the electronic device. Summary of the Invention

[0003] The purpose of this application is to provide a dual-battery power supply system and electronic device. Even if the output voltage of the second battery module is low, the power supply to the power system can still be provided normally through the boost module and the second wire. This solves the problem that the voltage drop on the wire is large due to the long distance between the battery and the power system, which reduces the usable capacity of the battery and improves the battery life of the electronic device.

[0004] To address the aforementioned technical problems, this application provides a dual-battery power supply system, comprising:

[0005] The first battery module has its output end connected to the power supply end of the power system via a first wire, and is used to supply power to the power system.

[0006] The second battery module and the boost module are connected in sequence through the boost module and the second wire to the power supply terminal of the power system for supplying power to the power system. The length of the second wire is greater than the length of the first wire.

[0007] The boost module is used to increase the output voltage of the second battery module to a preset voltage;

[0008] Wherein, the preset voltage is greater than the power supply voltage of the power system, and the difference between the voltage after the preset voltage passes through the second conductor and the power supply voltage is not greater than the preset value.

[0009] Preferably, the first battery module includes a first battery power management module and a first battery; the second battery module includes a second battery power management module and a second battery.

[0010] The output terminal of the second battery is connected to the first input terminal of the second battery power management module;

[0011] The output terminal of the second battery power management module is connected to the input terminal of the boost module;

[0012] The output terminal of the first battery is connected to the first input terminal of the first battery power management module;

[0013] The first battery power management module has its second input terminal connected to the output terminal of the boost module via the second wire, and its output terminal connected to the power system.

[0014] Preferably, it further includes:

[0015] The charging interface has a first output terminal connected to the second input terminal of the second battery power management module, and a second output terminal connected to the second input terminal of the first battery power management module.

[0016] The charging interface is used to charge the second battery through the second battery power management module and to charge the first battery and supply power to the power system when the power system is running, if the power system is plugged into the charger; if the power system is powered off, the second battery is charged through the second battery power management module and the first battery is charged through the first battery power management module.

[0017] The first switching circuit has its input terminal connected to the boost module and its output terminal connected to the second input terminal of the first battery power management module via the second wire. It is used to turn on when both the first battery and the second battery are supplying power to the power system and to turn off when the first battery and the second battery are charging.

[0018] Preferably, the second battery power management module is further configured to monitor the output voltage of the second battery in real time, and when the output voltage is less than a preset threshold, to shut down the boost module and control the first switching circuit to turn off, so that the first battery supplies power to the power system through the first battery power management module.

[0019] Preferably, the second battery power management module is further configured to turn on the boost module and control the first switching circuit to conduct when the output voltage of the second battery is not less than the preset threshold, so that the first battery and the second battery simultaneously supply power to the power system.

[0020] Preferably, it further includes:

[0021] The second switching circuit is located between the second output terminal of the charging interface and the second input terminal of the first battery power management module, and is used to turn on with a delay when the charger is inserted into the charging interface.

[0022] The first battery power management module is also used to identify whether a USB device is plugged into the charging interface. If so, it controls the first switch circuit to turn off and controls the second switch circuit to turn on after a delay, so as to enumerate the USB device.

[0023] Preferably, the boost circuit is a boost circuit or a DC-DC circuit.

[0024] Preferably, the output terminal of the second battery module is further connected to the first battery module in sequence via a boost module and a second wire;

[0025] The second battery module is also used to charge the first battery module through the boost module and the second wire.

[0026] To address the aforementioned technical problems, this application also provides an electronic device, including the dual-battery power supply system described above.

[0027] Preferably, the electronic device is a VR device or an AR device.

[0028] This application provides a dual-battery power supply system and electronic device, relating to the field of battery power supply. In this system, both the first and second battery modules can supply power to the power-consuming system. The length of the second wire connecting the second battery module and the power-consuming system is greater than the length of the first wire connecting the first battery module and the power-consuming system. Therefore, a boost module is provided for the second battery module to boost its output voltage. The difference between the boosted preset voltage, after a voltage drop through the second wire, and the power supply voltage of the power-consuming system is not greater than a preset value. That is, even if the output voltage of the second battery module is low, it can still supply power to the power-consuming system normally through the boost module and the second wire. This solves the problem of reduced battery capacity due to large voltage drops on the wires caused by the long distance between the battery and the power-consuming system, thus improving the battery life of the electronic device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A structural block diagram of a dual-battery power supply system provided in this application;

[0031] Figure 2 This application provides a schematic diagram of the specific structure of a dual-battery power supply system.

[0032] Figure 3 This application provides a schematic diagram of the first charging process.

[0033] Figure 4 A schematic diagram of the second charging process provided in this application;

[0034] Figure 5 A schematic diagram of the third charging process provided in this application. Detailed Implementation

[0035] The core of this application is to provide a dual-battery power supply system and electronic device. Even if the output voltage of the second battery module is low, the power supply to the power system can still be provided normally through the boost module and the second wire. This solves the problem that the voltage drop on the wire is large due to the long distance between the battery and the power system, which reduces the usable capacity of the battery and improves the battery life of the electronic device.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Please refer to Figure 1 , Figure 1 A structural block diagram of a dual-battery power supply system provided in this application is shown. The system includes:

[0038] The first battery module 11 has its output end connected to the power supply end of the power system via a first wire, and is used to supply power to the power system.

[0039] The output terminal of the second battery module 12 is connected to the power supply terminal of the power system in sequence through the boost module 13 and the second wire to supply power to the power system. The length of the second wire is greater than the length of the first wire.

[0040] The boost module 13 is used to increase the output voltage of the second battery module 12 to a preset voltage;

[0041] The preset voltage is greater than the power supply voltage of the power system, and the difference between the preset voltage after passing through the second conductor and the power supply voltage is not greater than the preset value.

[0042] Specifically, this application takes into account that when using two batteries to power an electrical system as described in the prior art, if one of the batteries is far away from the electrical system, part of the battery's voltage will be consumed in the connecting wires, resulting in less usable capacity of the battery.

[0043] The design concept of this application is to set a boost module 13 at the rear end of the battery, which is far away from the power system, to increase the output voltage of the battery. At this time, even if the connected line needs to consume some voltage, it can still supply power to the power system normally.

[0044] Specifically, if the power supply section of the power system includes two modules, namely a first battery module 11 and a second battery module 12, and if the first battery module 11 is connected to the power system via a first wire, and the second battery module 12 is connected to the power system via a second wire, and the length of the second wire is greater than the length of the first wire, then when the second battery module 12 supplies power to the power system, a significant portion of the voltage output by the second battery module 12 will be consumed on the second wire. In this case, the usable capacity of the second battery module 12 will be relatively small. Therefore, a boost module 13 is installed between the second battery module 12 and the second wire to boost the output voltage of the second battery module 12 to a preset voltage. At this point, although some voltage is consumed on the second wire, the supply voltage transmitted to the power system still falls within the range of the power supply voltage of the power system.

[0045] For example, if the power supply voltage range of the power system is 4.5V-5V, and the output voltage of both the first battery module 11 and the second battery module 12 is 5V, but the voltage required on the first wire is 0.1V and the voltage required on the second wire is 0.5V, then the first battery module 11 can supply power to the power system normally. The second battery module 12 can initially supply power, but as its charge decreases, its output voltage will drop. At this point, it may not be able to supply power to the power system when the second battery module 12 still has half its charge remaining. However, this application provides a boost module 13 at the output terminal of the second battery module, for example, to boost the output voltage of the second battery to 5.5V. In this case, even if the second wire requires 0.5V, it can still supply power to the power system normally. Furthermore, when the second battery module 12 has a low charge, such as an output voltage of 2V, it can also be boosted to 5.5V by the boost module 13, still supplying power to the power system normally. Unless otherwise specified, the second battery module 12 can supply power to the power system normally until its power is completely depleted, thus increasing the available capacity of the second battery module 12.

[0046] As a preferred embodiment, the boost circuit is a Boost circuit or a DC-DC circuit.

[0047] The boost circuit is not limited to the two examples mentioned above, and may also be implemented in other ways. This application does not impose any special limitations on it.

[0048] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 2 This is a schematic diagram of the specific structure of a dual-battery power supply system provided in this application. Figure 3 This is a schematic diagram of the first charging process provided in this application. Figure 4 This is a schematic diagram of the second charging process provided in this application. Figure 5 A schematic diagram of the third charging process provided in this application.

[0049] In a preferred embodiment, the output terminal of the second battery module 12 is connected to the first battery module 11 in sequence via the boost module 13 and the second wire;

[0050] The second battery module 12 is also used to charge the first battery module 11 through the boost module 13 and the second wire.

[0051] Furthermore, the above only describes the scenario where the second battery module 12 supplies power to the power system. In certain scenarios, the second battery module 12 can also charge the first battery module 11 through the boost module 13 and the second wire. In a specific embodiment, the second battery module 12 can simultaneously charge itself and supply power to the power system.

[0052] In a preferred embodiment, the first battery module 11 includes a first battery power management module 22 and a first battery 21; the second battery module 12 includes:

[0053] The output terminal of the second battery 23 is connected to the first input terminal of the second battery power management module 24.

[0054] The output terminal of the second battery power management module 24 is connected to the input terminal of the boost module 13;

[0055] The output terminal of the first battery 21 is connected to the first input terminal of the first battery power management module 22;

[0056] The first battery power management module 22 has its second input terminal connected to the output terminal of the boost module 13 via a second wire, and its output terminal connected to the power system.

[0057] Specifically, this embodiment aims to provide a specific implementation of a first battery module 11 and a second battery module 12. The first battery module 11 includes a first battery power management module 22 and a first battery 21, and the second battery module 12 includes a second battery power management module 24 and a second battery 23. In this case, the first battery 21 supplies power to the power system through the first battery power management module 22 and a first lead wire. The second battery 23 supplies power to the power system through the boost module 13 of the second battery power management module 24 and a second lead wire.

[0058] Furthermore, the output end of the second wire is also connected to the input end of the first battery power management module 22, so that the second battery 23 can charge the first battery 21 and supply power to the power system through the second battery power management module 24, the boost module 13, the second wire and the first battery power management module 22.

[0059] As a preferred embodiment, it also includes:

[0060] The charging interface 27 has a first output terminal connected to the second input terminal of the second battery power management module 24, and a second output terminal connected to the second input terminal of the first battery power management module 22.

[0061] The charging port 27 is used to charge the second battery 23 through the second battery power management module 24 and charge the first battery 21 and supply power to the power system when the power system is running, and when the power system is plugged into the charger; if the power system is off, the second battery 23 is charged through the second battery power management module 24 and the first battery 21 is charged through the first battery power management module 22.

[0062] The first switching circuit 25 has its input terminal connected to the boost module 13 and its output terminal connected to the second input terminal of the first battery power management module 22 via a second wire. It is used to turn on when both the first battery 21 and the second battery 23 are powered by the power system and to turn off when the first battery 21 and the second battery 23 are charging.

[0063] Furthermore, the dual-battery power supply system in this application is also equipped with a charging interface 27 for connecting a charger. When a charger is detected connected to the charging interface 27, the charger charges the second battery 23 through the second battery power management module 24 and the first battery 21 through the first battery power management module 22. If the power system is in operation, that is, when the power system needs power, the charger is controlled to supply power to the power system through the first battery power management module 22. If the power system is in a powered-off state, it is determined that the power system does not need power. At this time, the charger only charges the second battery 23 and the first battery 21. At this time, the circuit between the second battery 23 and the first battery 21 is disconnected, that is, the boost module 13 is stopped working, and the first switching circuit 25 between the first battery 21 and the second battery 23 is disconnected to ensure safety during the charging process.

[0064] In a preferred embodiment, the second battery power management module 24 is also used to monitor the output voltage of the second battery 23 in real time, and when the output voltage is less than a preset threshold, to shut down the boost module 13 and control the first switching circuit 25 to be turned off, so that the first battery 21 can supply power to the power system through the first battery power management module 22.

[0065] Furthermore, since the output terminal of the second battery module 12 is equipped with a boost module 13, it can supply power to the power system or charge the first battery module 11, regardless of the output voltage of the second battery module 12, as long as it is not zero. However, if the second battery module 12 is completely discharged each time, it may affect the lifespan of the second battery module 12.

[0066] Therefore, the second battery power management module 24 in this application monitors the output voltage of the second battery 23 in real time. When the output voltage is less than a preset threshold, it is determined that the output voltage is low and the discharge threshold has been reached. At this time, the second battery 23 is controlled to stop supplying power to the power system, and the first battery 21 is specifically controlled to supply power to the power system. The specific operation is: controlling the boost module 13 to turn off and the first switching circuit 25 to turn off.

[0067] Of course, the first battery power management module 22 also detects the output voltage of the first battery 21, and controls it to stop supplying power to the power system when its output voltage is less than a preset threshold. If the output voltage of both batteries is less than the preset threshold, a prompt message is output to inform the staff that the power system cannot be supplied normally.

[0068] In a preferred embodiment, the second battery power management module 24 is also used to turn on the boost module 13 and control the first switching circuit 25 to conduct when the output voltage of the second battery is not less than a preset threshold, so that the first battery 21 and the second battery 23 can supply power to the power system at the same time.

[0069] Similarly, when the output voltage of the second battery 23 is not less than a preset threshold, the path between the second battery 23 and the power system can be opened, so that its isomorphic boost module 13 and second switching circuit 26 can supply power to the power system.

[0070] When the output voltage of the first battery 21 and the output voltage of the second battery 23 are both not less than a preset threshold, this application does not specifically limit which battery is used to power the power system. For example, when the power consumption of the power system is high, both batteries can be controlled to power the power system simultaneously.

[0071] As a preferred embodiment, it also includes:

[0072] The second switch circuit 26 is located between the second output terminal of the charging interface 27 and the second input terminal of the first battery power management module 22, and is used to delay the conduction when the charger is inserted into the charging interface 27.

[0073] The first battery power management module 22 is also used to identify whether a USB device is plugged into the charging interface 27. If so, it controls the first switch circuit 25 to be turned off and controls the second switch circuit 26 to be turned on after a delay, so as to enumerate the USB device.

[0074] Furthermore, the first battery power management module 22 in this application is a module that is constantly powered on and also has USB communication functionality. If it is necessary to identify a USB device, it needs to be identified at a moment of power-on. Therefore, a second switch circuit 26 is provided between the charging interface 27 and the first battery power management module 22. When it detects that a USB device is inserted, it controls the first switch circuit 25 to turn off and controls the second switch circuit 26 to turn on after a delay. At this time, the first battery power management module 22 has a moment of power-on, which allows the first battery power management module 22 to enumerate USB devices.

[0075] To address the aforementioned technical problems, this application also provides an electronic device, including the dual-battery power supply system described above.

[0076] In a preferred embodiment, the electronic device is a VR device or an AR device. For example, the electronic device may be a wearable device, and the VR or AR device may be AR glasses, etc.

[0077] For a description of the electronic device, please refer to the above embodiments; this application will not repeat it here.

[0078] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual battery power supply system characterized by comprising: The application relates to a power supply system for a power-consuming system, comprising: a first battery module, the output end of which is connected with the power supply end of the power-consuming system through a first wire, and used for supplying power to the power-consuming system; a second battery module and a voltage boosting module, the output end of the second battery module being connected with the power supply end of the power-consuming system through the voltage boosting module and a second wire in sequence, and used for supplying power to the power-consuming system, wherein the length of the second wire is greater than that of the first wire; the voltage boosting module is used for raising the output voltage of the second battery module to a preset voltage; wherein the preset voltage is greater than the power supply voltage of the power-consuming system, and the difference between the voltage after the preset voltage passing through the second wire and the power supply voltage is not greater than a preset value; the first battery module comprises a first battery power supply management module and a first battery; the second battery module comprises a second battery power supply management module and a second battery; the output end of the second battery is connected with the first input end of the second battery power supply management module; the output end of the second battery power supply management module is connected with the input end of the voltage boosting module; the output end of the first battery is connected with the first input end of the first battery power supply management module; the second input end of the first battery power supply management module is connected with the output end of the voltage boosting module through the second wire, and the output end is connected with the power-consuming system; further comprising: a charging interface, the first output end of which is connected with the second input end of the second battery power supply management module, and the second output end is connected with the second input end of the first battery power supply management module; the charging interface is used for charging the second battery through the second battery power supply management module and charging the first battery through the first battery power supply management module and supplying power to the power-consuming system when the charging interface is inserted into a charger and the power-consuming system is in a running state; and the charging interface is used for charging the second battery through the second battery power supply management module and charging the first battery through the first battery power supply management module when the charging interface is inserted into the charger and the power-consuming system is in a shutdown state; a first switch circuit, the input end of which is connected with the voltage boosting module, and the output end is connected with the second input end of the first battery power supply management module through the second wire, and used for being turned on when the first battery and the second battery supply power to the power-consuming system and being turned off when the first battery and the second battery are charged; further comprising: a second switch circuit, which is arranged between the second output end of the charging interface and the second input end of the first battery power supply management module, and used for being turned on in a time-delay mode when the charging interface is inserted into the charger; the first battery power supply management module is further used for identifying whether the charging interface is inserted into a USB device, and if yes, the first battery power supply management module controls the first switch circuit to be turned off and controls the second switch circuit to be turned on in a time-delay mode, so as to realize the enumeration of the USB device.

2. The dual battery power system of claim 1, wherein, the second battery power supply management module is further used for monitoring the output voltage of the second battery in real time, and when the output voltage is less than a preset threshold value, the second battery power supply management module turns off the voltage boosting module and controls the first switch circuit to be turned off, so that the first battery supplies power to the power-consuming system through the first battery power supply management module.

3. The dual battery power system of claim 2, wherein, The second battery power management module is further configured to turn on the voltage boosting module and control the first switch circuit to be conductive when the output voltage of the second battery is not less than the preset threshold, so that the first battery and the second battery supply power to the power consumption system at the same time.

4. The dual battery power system of claim 1, wherein, The voltage boosting module is a Boost circuit or a DC-DC circuit.

5. A dual battery power system as claimed in any one of claims 1 to 4 wherein, The output end of the second battery module is further connected with the first battery module through the voltage boosting module and the second wire in sequence. The second battery module is further configured to charge the first battery module through the voltage boosting module and the second wire.

6. An electronic device, comprising: The dual-battery power supply system comprises any one of claims 1-5.

7. The electronic device of claim 6, wherein, The electronic device is a VR device or an AR device.

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