Power supply management circuit and energy storage power supply

Abstract

The application relates to a power supply management circuit and an energy storage power supply. The power supply management circuit comprises a controller, a battery module, a main auxiliary power supply module and a low-power auxiliary power supply module; the control end of the main auxiliary power supply module and the control end of the low-power auxiliary power supply module are connected to the signal output end of the controller, and the main auxiliary power supply module and the low-power auxiliary power supply module are arranged in parallel between the battery module and the power supply end of the controller; the signal output end of the controller outputs a signal corresponding to the state of the controller; in the case that the controller is in a working state, the main auxiliary power supply module is in a conducting state, and the battery module supplies power to the controller through the main auxiliary power supply module; in the case that the controller is in a sleep state, the low-power auxiliary power supply module is in a conducting state, and the battery module supplies power to the controller through the low-power auxiliary power supply module. The power supply reliability when supplying power to the controller can be improved by adopting the power supply management circuit.

Description

Technical Field

[0001] This application relates to the field of power supply control technology, and in particular to a power supply management circuit and an energy storage power source. Background Technology

[0002] With the rapid development of lithium battery technology and power electronics technology, energy storage power supplies are gaining increasing popularity among users, leading to greater demands for their functionality. For example, the control activation function is a crucial feature of energy storage power supplies, allowing users to selectively put the controller into an active or sleep state.

[0003] In related technologies, button batteries are often built into energy storage power supplies. When the controller in the energy storage power supply is in working state, the controller is powered by the battery module in the energy storage power supply. When the controller in the energy storage power supply is in sleep state, the controller is powered by the button battery in the energy storage power supply.

[0004] However, the power supply time maintained by the button battery when powering the controller is limited. Therefore, there is a problem in the related technology that the controller in the energy storage power supply cannot stay in sleep mode for a long time. Utility Model Content

[0005] Based on this, this application provides a power management circuit and an energy storage power supply, which can improve the power supply reliability when supplying power to the controller.

[0006] In a first aspect, this application provides a power management circuit, which includes a controller, a battery module, a main auxiliary power module, and a low-power auxiliary power module; the control terminals of the main auxiliary power module and the low-power auxiliary power module are both connected to the signal output terminal of the controller, and the main auxiliary power module and the low-power auxiliary power module are connected in parallel between the battery module and the power supply terminal of the controller; the signal output terminal of the controller outputs a signal corresponding to the state of the controller.

[0007] When the controller is in operation, the main and auxiliary power modules are in the ON state, and the battery module supplies power to the controller through the main and auxiliary power modules; when the controller is in sleep state, the low-power auxiliary power module is in the ON state, and the battery module supplies power to the controller through the low-power auxiliary power module.

[0008] In some embodiments, the controller includes a communication control module and a main control module;

[0009] The communication terminal of the communication control module is connected to the communication terminal of the main control module. The power supply terminals of both the communication control module and the main control module are connected to the output terminals of the main and auxiliary power supply modules. The power supply terminal of the communication control module is also connected to the output terminal of the low-power auxiliary power supply module.

[0010] When the main control module is in operation, the battery module supplies power to the communication control module and the main control module through the main auxiliary power module; when the main control module is in sleep mode, the battery module supplies power to the communication control module through the low-power auxiliary power module.

[0011] In some embodiments, the main signal output terminal of the main control module is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the communication control module is connected to the control terminal of the low-power auxiliary power supply module.

[0012] In some embodiments, the main signal output terminal of the communication control module is connected to the control terminal of the main auxiliary power supply module.

[0013] In some embodiments, the main auxiliary power module includes a main auxiliary power system and an on / off controller;

[0014] The first conducting terminal of the on / off controller is connected to the battery module, the second conducting terminal of the on / off controller is connected to the input terminal of the main auxiliary power system, the controlled terminal of the on / off controller is connected to the main signal output terminal of the main control module, and the controlled terminal of the on / off controller is also connected to the main signal output terminal of the communication control module; the power supply terminal of the communication control module and the power supply terminal of the main control module are both connected to the output terminal of the main auxiliary power system.

[0015] In some embodiments, the main auxiliary power supply module further includes a first diode; the anode of the first diode is connected to the main signal output terminal of the main control module, and the cathode of the first diode is connected to the controlled terminal of the on / off controller.

[0016] In some embodiments, the low-power auxiliary power module includes a low-power auxiliary power system and a second diode;

[0017] The input terminal of the low-power auxiliary power supply system is connected to the battery module, the output terminal of the low-power auxiliary power supply system is connected to the power supply terminal of the communication control module, and the control terminal of the low-power auxiliary power supply system is connected to the low-power signal output terminal of the communication control module; the cathode of the second diode is connected to the power supply terminal of the communication control module, and the anode of the second diode is connected to the power supply terminal of the main control module.

[0018] In some embodiments, the low-power auxiliary power supply system includes a signal control module and an enable module;

[0019] The input terminal of the signal control module is connected to the low-power signal output terminal of the communication control module; the output terminal of the signal control module is connected to the control terminal of the enable module; the input terminal of the enable module is connected to the battery module; and the output terminal of the enable module is connected to the power supply terminal of the communication control module.

[0020] When the controller is in sleep mode, the enable module is turned on, and the battery module supplies power to the communication control module through the enable module.

[0021] In some embodiments, the power management circuit further includes a power management module and a load interface;

[0022] The input terminal of the power management module is connected to the battery module, the output terminal of the power management module is connected to the load interface, and the controlled terminal of the power management module is connected to the control terminal of the main control module.

[0023] Secondly, this application provides an energy storage power supply, which includes the power supply management circuit of any one of the first aspects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the power management circuit provided in the first embodiment;

[0026] Figure 2 A schematic diagram of the power management circuit provided in the second embodiment;

[0027] Figure 3 A schematic diagram of the power management circuit provided in the third embodiment;

[0028] Figure 4 A schematic diagram of the power management circuit provided in the fourth embodiment;

[0029] Figure 5 Schematic diagrams of the energy storage power supply provided for some embodiments;

[0030] Figure 6 A schematic diagram of the power supply circuit for the communication control module provided in the first embodiment;

[0031] Figure 7 A schematic diagram of the power supply circuit for the communication control module provided in the second embodiment;

[0032] Figure 8 A schematic diagram of the power supply circuit for the communication control module provided in the third embodiment;

[0033] Figure 9 A schematic diagram of the power supply circuit for the communication control module provided in the fourth embodiment;

[0034] Figure 10 A schematic diagram of the power supply circuit for the communication control module provided in the fifth embodiment;

[0035] Figure 11 A schematic diagram showing the correspondence between the signal output terminal of the communication control module provided in the first embodiment and the voltage change at the power supply terminal of the communication control module;

[0036] Figure 12 A schematic diagram showing the correspondence between the signal output terminal of the communication control module provided in the second embodiment and the voltage change at the power supply terminal of the communication control module;

[0037] Figure 13 This diagram illustrates the correspondence between the signal output from the low-power signal output terminal of the communication control module, the voltage change at the power supply terminal of the communication control module, and the activation pulse output from the main signal output terminal of the communication control module in some embodiments. Detailed Implementation

[0038] This is intended to illustrate the technical solution of this application more clearly, and is therefore only used as an example and should not be used to limit the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined. In the description of the embodiments of this application, "each" means each of the multiple options, unless otherwise explicitly defined.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] The circuits in the embodiments of this application do not involve any improvement to the steps. Any description of the steps can be found in the implementation methods in related technologies.

[0044] Figure 1 A schematic diagram of the power management circuit provided in the first embodiment is shown below. Figure 1 As shown, the power management circuit includes a controller, a battery module, a main auxiliary power module, and a low-power auxiliary power module; the control terminals of the main auxiliary power module and the low-power auxiliary power module are both connected to the signal output terminal of the controller, and the main auxiliary power module and the low-power auxiliary power module are connected in parallel between the power supply terminal of the battery module and the power supply terminal of the controller; the signal output terminal of the controller outputs a signal corresponding to the state of the controller.

[0045] When the controller is in operation, the main and auxiliary power modules are in the ON state, and the battery module supplies power to the controller through the main and auxiliary power modules; when the controller is in sleep state, the low-power auxiliary power module is in the ON state, and the battery module supplies power to the controller through the low-power auxiliary power module.

[0046] The main auxiliary power module has its input connected to the battery module and its output connected to the power supply of the controller. The low-power auxiliary power module has its input connected to the battery module and its output connected to the power supply of the controller.

[0047] The controller may be included in the energy storage power supply and may be used to handle tasks generated by the energy storage power supply. In some embodiments, the controller may include integration of one or more of the following: a microcontroller unit (MCU), a general-purpose processor, an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field-programmable gate array (FPGA), a microprocessor, a programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, a quantum computing-based data processing logic unit, an artificial intelligence (AI) processor, etc.

[0048] The battery module can be an existing power supply module in the energy storage power supply. For example, the battery module can be an energy storage battery in the energy storage power supply.

[0049] The controller being in working state can mean that the controller has entered normal working mode (non-low power mode), and the controller being in sleep state can mean that the controller has entered low power mode.

[0050] In some embodiments, the signal output terminal of the controller may include a main signal output terminal and a low-power signal output terminal. The main signal output terminal of the controller is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the controller is connected to the control terminal of the low-power auxiliary power supply module.

[0051] In some embodiments, when the controller is in the working state, the main signal output terminal of the controller outputs a valid electrical signal (e.g., a high-level signal) to enable the main auxiliary power module to be in the conducting state, and the low-power signal output terminal of the controller outputs an invalid electrical signal (e.g., a low-level signal) to enable the low-power auxiliary power module to be in the disconnected state. Thus, the main auxiliary power module is working, the low-power auxiliary power module is not working, and the battery module supplies power to the controller through the main auxiliary power module.

[0052] In some embodiments, when the controller is in a sleep state, the main signal output terminal of the controller outputs an invalid electrical signal (e.g., a low-level signal) to disconnect the main auxiliary power module, and the low-power signal output terminal of the controller outputs an valid electrical signal (e.g., a high-level signal or a pulse width modulation voltage signal; this embodiment uses a pulse width modulation voltage signal as an example) to turn on the low-power auxiliary power module, thereby stopping the main auxiliary power module from working and enabling the low-power auxiliary power module to work, through which the battery module supplies power to the controller.

[0053] It should be noted that how the controller outputs high-level signals, low-level signals, or pulse-width modulated voltage signals in this application embodiment is not the focus of this application embodiment. For example, the controller can use any technology in the related art to output high-level signals, low-level signals, or pulse-width modulated voltage signals. The description of these signals in this application embodiment is only for illustrating the circuit principle in this application embodiment, and does not constitute an improvement on how the controller outputs signals. The controller only needs to be able to output high-level signals, low-level signals, or pulse-width modulated voltage signals. That is to say, the power supply management circuit in this application embodiment does not depend on how the controller outputs high-level signals, low-level signals, or pulse-width modulated voltage signals; it only needs to be able to output high-level signals, low-level signals, or pulse-width modulated voltage signals.

[0054] In some embodiments, the voltage supplied by the battery module to the controller through the main auxiliary power module is greater than the voltage supplied by the battery module to the controller through the low-power auxiliary power module.

[0055] In the technical solution provided in this application embodiment, when the controller is in the working state, the battery module supplies power to the controller through the main auxiliary power module; when the controller is in the sleep state, the battery module supplies power to the controller through the low-power auxiliary power module. The battery module can store a large amount of electrical energy, enabling the power module to supply power to the controller for a long time according to the voltage provided by the battery module, thereby improving the power supply reliability when supplying power to the controller. Furthermore, when the controller is in the working state, the battery module provides sufficient electrical energy to the controller through the main auxiliary power module, ensuring that the controller can efficiently run various complex tasks. When the controller is in the sleep state, the battery module maintains the low-power operation of the controller through the low-power auxiliary power module, reducing unnecessary power consumption. This ensures the stable operation of the controller during normal operation and reduces the power consumption of the controller during sleep, extending the battery module's battery life and further improving the power supply reliability when supplying power to the controller.

[0056] Figure 2A schematic diagram of the power management circuit provided in the second embodiment is shown below. Figure 2 As shown, Figure 2 Compared to the example Figure 2 The difference in the embodiments is that the controller includes a communication control module and a main control module. The communication terminal of the communication control module is connected to the communication terminal of the main control module, and the power supply terminals of both the communication control module and the main control module are connected to the output terminals of the main and auxiliary power supply modules. The power supply terminal of the communication control module is also connected to the output terminal of the low-power auxiliary power supply module.

[0057] When the main control module is in operation, the battery module supplies power to the communication control module and the main control module through the main auxiliary power module; when the main control module is in sleep mode, the battery module supplies power to the communication control module through the low-power auxiliary power module.

[0058] In some embodiments, the communication control module can also be connected to a communication antenna, through which the communication control module transmits and receives signals.

[0059] In some embodiments, when the controller is in a sleep state, the main control module stops running (or is in a sleep state), while the communication control module remains operational; when the controller is operational, both the main control module and the communication control module are operational.

[0060] In some embodiments, the main control module may include a main control MCU. In some embodiments, the communication control module may include a Wireless Fidelity (WiFi) MCU. In other embodiments, the communication control module may be an MCU of other communication types, such as a Bluetooth MCU, a cellular MCU, or an IoT MCU.

[0061] In some embodiments, the communication control module's communication terminal is connected to the main control module's communication terminal, enabling communication between the two. For example, when the main control module needs to enter a sleep state, it can send a sleep signal to the communication control module; conversely, when the communication control module needs to wake up the main control module, it can send a wake-up signal to the main control module, allowing the main control module to process services. In this way, both the main control module and the communication control module can determine whether the main control module is in a sleep or working state.

[0062] It should be noted that the transmission and reception of sleep and wake-up signals, as well as the sleep and wake-up of the main control module, can be implemented using any technology in the relevant field. The implementation of the power management circuit in the embodiments of this application does not depend on any improvement to the method.

[0063] In the technical solution provided in this application embodiment, when the main control module is in working state, the main auxiliary power module supplies power to both the communication control module and the main control module, effectively ensuring smooth communication between the two and stable operation of the overall device function, meeting the needs of complex business processing. When the main control module enters sleep state, the low-power auxiliary power module supplies power to the communication control module, without needing to supply power to the main control module. While maintaining smooth communication link, it greatly reduces unnecessary power consumption, thus ensuring the high performance of the main control module when it is working, and reducing power consumption when the main control module is in sleep state, extending the battery module's battery life, thereby improving power utilization.

[0064] In some embodiments, Figure 2 Compared to the example Figure 1 The difference in the embodiments is that the main signal output terminal of the main control module is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the communication control module is connected to the control terminal of the low-power auxiliary power supply module.

[0065] In some embodiments, when the main control module is in operation, the main signal output terminal of the main control module outputs a valid electrical signal (e.g., a high-level signal) to enable the main auxiliary power module to be in the conducting state, and the low-power signal output terminal of the communication control module outputs an invalid electrical signal (e.g., a low-level signal) to enable the low-power auxiliary power module to be in the disconnected state. Thus, the main auxiliary power module is working, the low-power auxiliary power module is not working, and the battery module supplies power to the communication control module and the main control module through the main auxiliary power module.

[0066] In some embodiments, when the main control module is in a sleep state, the main signal output terminal of the main control module outputs an invalid electrical signal (e.g., a low-level signal) to disconnect the main auxiliary power supply module, and the low-power signal output terminal of the communication control module outputs an valid electrical signal (e.g., a pulse width modulation voltage signal) to turn on the low-power auxiliary power supply module. Thus, the main auxiliary power supply module stops working, the low-power auxiliary power supply module starts working, and the battery module supplies power to the communication control module through the low-power auxiliary power supply module.

[0067] In other embodiments, the control terminals of the main auxiliary power supply module and the low-power auxiliary power supply module may have other connection methods. For example, the main signal output terminal of the main control module is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the main control module is connected to the control terminal of the low-power auxiliary power supply module. Similarly, the main signal output terminal of the communication control module is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the communication control module is connected to the control terminal of the low-power auxiliary power supply module.

[0068] In the technical solution provided in this application embodiment, the low-power signal output terminal of the communication control module is connected to the control terminal of the low-power auxiliary power module. This avoids the situation where the main control module needs to output a valid electrical signal to the low-power auxiliary power module when the main control module needs to enter a sleep state, which would prevent the main control module from entering sleep mode. Therefore, in this embodiment, the low-power signal output terminal of the communication control module outputs a valid electrical signal to the low-power auxiliary power module, thereby enabling the main control module to enter sleep mode smoothly and providing the control effectiveness of the communication control module.

[0069] In some embodiments, Figure 2 Compared to the example Figure 1 The difference in the embodiment is that the main signal output terminal of the communication control module is connected to the control terminal of the main auxiliary power supply module.

[0070] In some embodiments, when the communication control module needs to wake up the main control module, the communication control module wakes up the main control module through a communication connection with the main control module. The main signal output terminal of the communication control module can also output a valid electrical signal (e.g., a high-level signal) to put the main auxiliary power module in a conducting state. The battery module supplies power to the main control module and the communication control module through the main auxiliary power module. This avoids the situation where the main auxiliary power module does not supply power to the main control module after the communication control module sends a wake-up signal to the main control module, causing the main control module to be unable to work. This improves the reliability and timeliness of the main control module switching from a sleep state to a working state.

[0071] In some embodiments, the main signal output terminal of the communication control module outputs an activation pulse (or a valid electrical signal of a set duration). The activation pulse enables the main auxiliary power module to conduct for such a duration that it can continue until the main control module starts up and enables the main signal output terminal of the main control module to output a valid electrical signal. In other words, the activation pulse enables the main auxiliary power module to conduct for such a duration that the main control module can continue to take over the control of the communication control module to control the main auxiliary power module to conduct. This not only avoids the interruption of power supply to the main control module and the communication control module, but also eliminates the need for the main signal output terminal of the communication control module to output the activation pulse for a long time, thus reducing the power consumption of the communication control module.

[0072] Figure 3 A schematic diagram of the power management circuit provided in the third embodiment is shown below. Figure 3 As shown, Figure 3 Compared to the example Figure 2The difference in the embodiments is that: the main auxiliary power module includes a main auxiliary power system and an on / off controller (exemplarily, the on / off controller included in the main auxiliary power module can be a MOS switch); the first conducting terminal of the on / off controller is connected to the battery module, the second conducting terminal of the on / off controller is connected to the input terminal of the main auxiliary power system, the controlled terminal of the on / off controller is connected to the main signal output terminal of the main control module, and the controlled terminal of the on / off controller is also connected to the main signal output terminal of the communication control module; the power supply terminal of the communication control module and the power supply terminal of the main control module are both connected to the output terminal of the main auxiliary power system.

[0073] In the technical solution provided in this application embodiment, by controlling the on / off state of the on / off controller, the main auxiliary power system can supply power to the main control module and the communication control module, or the main auxiliary power system can stop supplying power to the main control module and the communication control module. This avoids changes to the structure of the main auxiliary power system that could affect its operation and cause potential operational anomalies, thereby improving the reliability and stability of the main auxiliary power system.

[0074] In some embodiments, Figure 3 Compared to the example Figure 2 The difference in the embodiment is that the main auxiliary power supply module also includes a diode D1; the anode of diode D1 is connected to the main signal output terminal of the main control module, and the cathode of diode D1 is connected to the controlled terminal of the on / off controller.

[0075] In the technical solution provided in this application embodiment, the anode of diode D1 is connected to the main signal output terminal of the main control module, and the cathode of diode D1 is connected to the controlled terminal of the on / off controller. This ensures that when the main control module is in sleep mode, the effective electrical signal output by the communication control module will not flow to the main signal output terminal of the main control module, thereby achieving control isolation.

[0076] In some embodiments, the main signal output terminal of the communication control module is connected to the anode of another diode, and the cathode of the other diode is connected to the controlled terminal of the on / off controller.

[0077] In some embodiments, Figure 3 Compared to the example Figure 2 The difference in the embodiments is that: the low-power auxiliary power module includes a low-power auxiliary power system and a diode D2; the input terminal of the low-power auxiliary power system is connected to the battery module, the output terminal of the low-power auxiliary power system is connected to the power supply terminal of the communication control module, and the control terminal of the low-power auxiliary power system is connected to the low-power signal output terminal of the communication control module; the cathode of the diode D2 is connected to the power supply terminal of the communication control module, and the anode of the diode D2 is connected to the power supply terminal of the main control module.

[0078] In the technical solution provided in this application embodiment, the cathode of diode D2 is connected to the power supply terminal of the communication control module, and the anode of diode D2 is connected to the power supply terminal of the main control module. This enables the main auxiliary power system to supply power to the communication control module, while the low-power auxiliary power system cannot supply power to the main control module. This avoids the situation where the low-power auxiliary power system supplies power to the main control module, resulting in wasted power. Thus, this application embodiment can provide a solution to reduce power consumption.

[0079] In some embodiments, Figure 3 Compared to the example Figure 2 The difference in the embodiments lies in that the low-power auxiliary power supply system includes a signal control module and an enable module. The input terminal of the signal control module is connected to the low-power signal output terminal of the communication control module; the output terminal of the signal control module is connected to the control terminal of the enable module, the input terminal of the enable module is connected to the battery module, and the output terminal of the enable module is connected to the power supply terminal of the communication control module. When the controller is in sleep mode, the enable module is turned on, and the battery module supplies power to the communication control module through the enable module.

[0080] For a description of the signal control module and the enable module, please refer to the description in the above embodiments; they will not be repeated here.

[0081] Figure 4 A schematic diagram of the power management circuit provided in the fourth embodiment is shown below. Figure 4 As shown, Figure 4 Compared to the example Figure 3 The difference in the embodiment is that the power management circuit also includes a power management module and a load interface; the input terminal of the power management module is connected to the battery module, the output terminal of the power management module is connected to the load interface, and the controlled terminal of the power management module is connected to the control terminal of the main control module.

[0082] The load interface can be used to connect a load. In some embodiments, the main control module can control the power management module. For example, the main control module can control at least one of the output voltage, output current, and output power of the power management module. The scheme by which the main control module controls the power management module can be a conventional scheme, and this application embodiment does not limit it.

[0083] In some embodiments, the power management module can implement voltage regulation and voltage reduction functions. The specific implementation of the power management module is not limited in the embodiments of this application. Any module that implements voltage regulation and voltage reduction functions can be the power management module in the embodiments of this application.

[0084] In the technical solution provided in this application embodiment, the main control module controls the power management module during operation, thereby enabling control over the power supply to the load, which is beneficial to improving energy utilization and the controllability of power supply to the load.

[0085] Figure 4 The illustrated embodiment is in Figure 3 Based on the illustrated embodiments, in other embodiments, Figure 4 The illustrated embodiments can be used in Figure 1 or Figure 2 The embodiments shown are based on the examples provided, and will not be described in detail in this application.

[0086] The controller in the power management circuit of this application embodiment includes a communication control module and a main control module. For example, the communication control module and the main control module communicate via a Controller Area Network (CAN) bus; the main control module is responsible for controlling the power management module of the energy storage power supply, controlling the main and auxiliary power systems, and communicating with the communication control module; the communication control module is responsible for external communication, controlling the low-power auxiliary power system, controlling the main and auxiliary power systems, and communicating with the main control module.

[0087] In the normal operating mode of the energy storage power supply, that is, when the main control module is in working state, the main control module outputs a valid POW_ON1 signal (i.e., a valid electrical signal) to control the operation of the main and auxiliary power supply systems. The main and auxiliary power supply systems supply power to the main control module and the communication control module. The power supply terminal of the communication control module is isolated from the power supply terminal of the main control module by a diode D2, which only allows the main and auxiliary power supply systems to supply power to the communication control module, while the low-power auxiliary power supply system cannot supply power to the main control module.

[0088] When the energy storage power supply receives a sleep command, the main control module enters a sleep state. The main control module sends a sleep signal to the communication control module via CAN communication. The communication control module starts a low-power mode. The main control module outputs a POW_ON1 signal (i.e., an invalid electrical signal) to shut down the main and auxiliary power systems. The main control module is powered down, and the power management module of the energy storage power supply also stops working.

[0089] To enable remote activation and startup of the application (APP), the energy storage power supply is not completely shut down. After the main control module outputs a sleep signal to the communication control module, the communication control module activates the POW_PWM signal (i.e., outputs the aforementioned pulse width modulation voltage signal), starting the low-power auxiliary power supply system. The communication control module is powered by the low-power auxiliary power supply system. In low-power mode, to ensure stable power supply to the communication control module, the communication control module only reads data from the communication buffer during the period when the POW_PWM signal is active. During this time, the communication control module is powered by the low-power auxiliary power supply system, ensuring stable power supply and normal operation of the communication control module.

[0090] If the communication control module does not receive a remote control activation start signal from the APP in the communication buffer, it continues to operate in the current low-power mode, with the POW_PWM signal being a waveform with a set duty cycle. If the communication control module reads a valid remote control activation start signal from the APP, it sets the POW_PWM signal to an invalid electrical signal (e.g., a low-level signal). After the communication control module (e.g., after multiple confirmations) confirms that the remote control activation start signal from the APP is valid, it outputs a POW_ON pulse signal to activate the main and auxiliary power supply systems. After the main and auxiliary power supply systems start working, the main control module is powered on and starts working, issuing a POW_ON1 level signal to maintain the normal operation of the main and auxiliary power supply systems and ensure normal power supply to the internal system of the energy storage power supply, thus realizing remote activation start via the APP.

[0091] A diode D1 is added between the POW_ON1 signal controlled by the main control module for the main and auxiliary power systems and the POW_ON pulse signal sent by the communication control module. This prevents the POW_ON signal from flowing back to the POW_ON1 signal pin of the main control module in low-power mode, achieving control isolation in low-power mode. The on / off controller controls the switching of the main and auxiliary power systems. The main control module turns on the on / off controller according to the energy storage power supply's operating mode to control the energy storage power supply's startup state. Simultaneously, when the communication control module receives a valid APP remote control activation start signal, it turns on the on / off controller to activate the main and auxiliary power systems.

[0092] Figure 5 Schematic diagrams of the energy storage power supply provided for some embodiments, such as Figure 5 As shown, the energy storage power supply includes the power management circuit in any of the above embodiments.

[0093] In some embodiments, the energy storage module may further include a charging interface for connecting to a power source to supply power to the battery module in the power management circuit.

[0094] In some embodiments, the energy storage module may further include a communication antenna, which is connected to the communication control module of the power supply management circuit.

[0095] In some embodiments, the low-power auxiliary power supply module described above can be the power supply circuit for the communication control module. The power supply circuit for the communication control module is described below:

[0096] Figure 6 A schematic diagram of the power supply circuit for the communication control module provided in the first embodiment is shown below. Figure 6As shown, the power supply circuit of the communication control module includes a signal control module and an enable module; the input terminal of the signal control module is connected to the signal output terminal of the communication control module; the output terminal of the signal control module is connected to the control terminal of the enable module, the input terminal of the enable module is connected to the battery module, and the output terminal of the enable module is connected to the power supply terminal of the communication control module; the signal output terminal of the communication control module outputs a pulse width modulation voltage signal, which includes a periodically alternating first voltage signal and a second voltage signal.

[0097] The signal control module is used to periodically output a first level signal to the enable module according to the periodic first voltage signal; the enable module is used to periodically supply power to the communication control module according to the periodic first level signal and the battery voltage of the battery module.

[0098] The signal control module is also used to periodically output a second level signal to the enable module according to the periodic second voltage signal, and to periodically supply power to the communication control module; the enable module is also used to stop supplying power to the communication control module according to the periodic second level signal.

[0099] In some embodiments, the power supply terminal of the communication control module is also connected to the output terminal of the main auxiliary power system, and the input terminal of the main auxiliary power system is connected to the battery module. The battery module supplies power to the main auxiliary power system, which in turn provides a stable voltage output to the communication control module, thereby improving the operational stability of the communication control module.

[0100] In some embodiments, when the main control module and the communication control module are in operation, the main control module controls the main auxiliary power supply system to supply power to the main control module and the communication control module. When the main control module is in sleep mode (i.e., enters low-power mode), the main control module controls the main auxiliary power supply system to stop supplying power to the communication control module, while the communication control module remains in operation, and the communication control module controls its power supply circuit to supply power to the communication control module.

[0101] In some embodiments, the input terminal of the signal control module is connected to the signal output terminal of the communication control module. When the communication control module is in the working state, the communication control module outputs a second voltage signal to the input terminal of the signal control module, causing the signal control module to output a second level signal to the control terminal of the enable module. The enable module, based on the second level signal, does not supply power to the communication control module. When the communication control module is in a sleep state (i.e., enters a low-power mode), the communication control module outputs a periodically alternating first voltage signal and a second voltage signal to the input terminal of the signal control module. Each time, the signal control module outputs a first level signal to the control terminal of the enable module based on the acquired first voltage signal. The enable module supplies power to the communication control module based on the first level signal and the battery voltage of the battery module. Each time, the signal control module outputs a second level signal to the control terminal of the enable module based on the acquired second voltage signal. The enable module, based on the second level signal, does not supply power to the communication control module. In this way, by outputting periodically alternating first and second voltage signals, the battery module periodically supplies power to the communication control module.

[0102] For example, the first voltage signal and the second voltage signal are two voltage signals with different high and low voltage levels. For example, the first voltage signal is a high voltage signal and the second voltage signal is a low voltage signal. Or, for example, the first voltage signal is a low voltage signal and the second voltage signal is a high voltage signal. Similarly, the first level signal and the second level signal are two level signals with different high and low voltage levels. For example, the first level signal is a low level signal and the second level signal is a high level signal. Or, for example, the first level signal is a high level signal and the second level signal is a low level signal.

[0103] In the technical solution provided in this application embodiment, the communication control module outputs a pulse width modulation voltage signal to enable the enable module to periodically supply power to the communication control module according to the battery voltage provided by the battery module in the energy storage power supply. This allows the communication control module to be powered even when it enters a low-power mode, thanks to the large amount of energy stored in the battery module. This enables the enable module to supply power to the communication control module for extended periods based on the voltage provided by the battery module, improving the reliability of power supply to the communication control module in low-power mode. Furthermore, this application embodiment does not employ the conventional power supply method of using a fixed voltage value to power the communication control module. Conventional power supply methods often require continuous power supply from the battery module, leading to high battery consumption. In this application embodiment, the battery module periodically supplies power to the communication control module via the enable module, which, compared to continuous power supply, reduces battery energy consumption and further improves the reliability of power supply to the communication control module in low-power mode.

[0104] Figure 7 A schematic diagram of the power supply circuit for the communication control module provided in the second embodiment is shown below. Figure 7 As shown, Figure 7 Compared to the example Figure 6 The difference in the embodiment is that the signal control module further includes a signal conversion unit and a power storage unit; the signal conversion unit is connected between the signal output terminal of the communication control module and the control terminal of the enable module; the output terminal of the power storage unit is connected to the power supply terminal of the communication control module.

[0105] The signal conversion unit is used to output a first level signal to the enable module according to the first voltage signal output each time; the energy storage unit is used to store energy when the enable module supplies power to the communication control module, and to output a second voltage signal at the signal output terminal of the communication control module each time, so that the battery module supplies power to the communication control module when the enable module stops supplying power to the communication control module.

[0106] For example, the energy storage unit may include an energy storage capacitor (also called a capacitor), with the first end of the energy storage capacitor connected to the power supply terminal of the communication control module and the second end of the energy storage capacitor connected to the ground terminal.

[0107] In this system, while the enabling module supplies power to the communication control module, it also supplies power to the energy storage capacitor so that the energy storage capacitor can store energy. When the enabling module stops supplying power to the communication control module, the electrical energy stored in the energy storage capacitor is transferred to the communication control module so that the energy storage capacitor can supply power to the communication control module.

[0108] In the technical solution provided by this application embodiment, the energy storage unit stores energy when the enabling module supplies power to the communication control module, and supplies power to the communication control module when the enabling module stops supplying power. This avoids the problem of the communication control module suddenly losing power and causing control abnormalities when the enabling module stops supplying power, resulting in no other power supply. Therefore, this application embodiment can improve the control reliability of the communication control module. Furthermore, this application embodiment can avoid the problem of the communication control module losing power due to voltage fluctuations caused by continuous low voltage supply to the communication control module, and can avoid the problem of large power consumption of the battery module caused by continuous high voltage supply to the communication control module. Thus, it can balance the power supply reliability to the communication control module and reduce the power consumption of the battery module.

[0109] Figure 8 A schematic diagram of the power supply circuit for the communication control module provided in the third embodiment is shown below. Figure 8 As shown, Figure 8 The illustrated embodiments are compared to Figure 7The difference in the illustrated embodiment is that the signal conversion unit includes a control switch ( Figure 8 (Example: N-type transistor Q1). The control terminal of the control switch is connected to the signal output terminal of the communication control module, the first conducting terminal of the control switch is connected to the control terminal of the enable module, and the second conducting terminal of the control switch is connected to the ground terminal. The control switch is used to periodically conduct according to the first voltage signal periodically output by the communication control module, and output a periodic first level signal to the enable module. Figure 8 The illustrated embodiment is in Figure 7 Based on the illustrated embodiments, in other embodiments, Figure 8 The illustrated embodiments can be used in Figure 6 The embodiments shown are based on the examples provided, and will not be described in detail in this application.

[0110] For example, Figure 8 In the illustrated embodiment, the control switch is an N-type transistor. The base of the N-type transistor is connected to the signal output terminal of the communication control module, the collector is connected to the control terminal of the enable module, and the emitter is connected to ground. In other embodiments, the control switch can be an NMOS switch. Alternatively, by adjusting the enable module with corresponding signal conversion—for example, by adjusting the enable module to supply power to the communication control module based on a second level signal and stop supplying power based on a first level signal—the control switch can also be a P-type transistor, a PMOS switch, etc.

[0111] For example, when the control terminal of the control switch receives a first voltage signal, the first and second conducting terminals of the control switch are turned on, and the level signal output by the first conducting terminal of the control switch to the control terminal of the enable module is pulled down to the first level signal (e.g., a low level signal).

[0112] In some embodiments, the control switch is used to periodically disconnect according to a second voltage signal periodically output by the communication control module, and output a periodic second level signal to the enable module. Exemplarily, the first conducting terminal of the control switch is also connected to a battery module, so that when the control switch is periodically disconnected, the level signal of the first conducting terminal of the control switch is a second level signal (exemplarily, it can be provided by the battery module), and the first conducting terminal of the control switch outputs a periodic second level signal to the enable module.

[0113] In the technical solution provided in this application embodiment, by periodically turning on the control switch, the control switch periodically outputs a first-level signal to the enable module. By periodically turning off the control switch, the control switch periodically outputs a second-level signal to the enable module. Thus, by utilizing the periodic on and off of the control switch, the periodic alternating first-level and second-level signals can be output to the enable module. The first-level or second-level signal provided to the enable module depends only on the on / off state change of the control switch, without the need for complex circuit design or algorithm programs. This greatly simplifies the way the first-level or second-level signal is provided to the enable module. Furthermore, the on and off of the control switch is based on the physical connection relationship to achieve the level signal output, without the need for additional power supply to maintain the working state, effectively reducing the power consumption of the power supply circuit of the communication control module.

[0114] Figure 8 The illustrated embodiments are compared to Figure 7 The difference in the illustrated embodiment is that the signal conversion unit further includes a power monitoring subunit; the monitoring end of the power monitoring subunit is connected to the power supply end of the communication control module, and the output end of the power monitoring subunit is connected to the control end of the control switch.

[0115] The power monitoring subunit is used to output a second-level signal to the control terminal of the control switch when the power supply voltage of the communication control module is detected to be less than or equal to the preset voltage.

[0116] The control switch is also used to output a first-level signal to the enable module when the second-level signal is turned on, so that the enable module supplies power to the communication control module.

[0117] For example, the power monitoring subunit may include a power monitoring device. In some embodiments, the power monitoring subunit may also be connected to a ground terminal.

[0118] In some embodiments, the power monitoring subunit is configured to output a first-level signal to the control terminal of the control switch when it detects that the power supply voltage of the communication control module is greater than a preset voltage; the control switch is further configured to disconnect according to the first-level signal and output a second-level signal to the enable module so that the enable module does not supply power to the communication control module.

[0119] In the technical solution provided in this application embodiment, when the power monitoring subunit detects that the power supply voltage of the communication control module is less than or equal to a preset voltage, it outputs a second-level signal to the control terminal of the control switch, thereby enabling the enable module to supply power to the communication control module. Thus, even if the enable module stops supplying power to the communication control module when the communication control module outputs the second voltage signal, and the power supply from the signal control module cannot meet the power supply requirements of the communication control module, causing the voltage at the power supply terminal of the communication control module to drop to the preset voltage, the power monitoring subunit can still output a second-level signal to the control terminal of the control switch, enabling the enable module to supply power to the communication control module. This avoids relying solely on pulse width modulation voltage signals to control the power supply of the communication control module, which would otherwise fail to meet the power supply requirements. Instead, the power monitoring subunit can monitor the power supply voltage of the communication control module to control the power supply to the communication control module, preventing control anomalies caused by power failure of the communication control module. Therefore, the control reliability of the communication control module can be improved.

[0120] Figure 8 The illustrated embodiments are compared to Figure 7 The difference in the illustrated embodiment is that the power monitoring subunit includes a power monitoring device, a control terminal current limiting resistor R1, and a pull-down resistor R2.

[0121] The monitoring terminal of the power monitoring device is connected to the power supply terminal of the communication control module, and the output terminal of the power monitoring device is connected to the first terminal of the current limiting resistor R1 of the control terminal; the second terminal of the current limiting resistor R1 of the control terminal is connected to the control terminal of the control switch; the first terminal of the pull-down resistor R2 is connected to the output terminal of the power monitoring device, and the second terminal of the pull-down resistor R2 is connected to the ground terminal.

[0122] In some embodiments, the power monitoring device may also be connected to a ground terminal.

[0123] It should be noted that the power monitoring device can be a voltage monitor. The way the power monitor outputs a signal when it detects that the voltage does not meet the requirements can be implemented using any technique in the related art. The power supply circuit of the communication control module in this embodiment does not rely on improvements to the way the power monitoring device outputs its signal.

[0124] In the technical solution provided in this application embodiment, by setting the current limiting resistor R1 at the control terminal, the phenomenon that the control switch is easily damaged due to excessive current at the control terminal of the control switch can be prevented. By setting the pull-down resistor R2, when the output terminal of the power monitoring device outputs a low-level signal, it is ensured that the signal received by the control terminal of the control switch is also a low-level signal, thus avoiding the phenomenon that the control switch is mis-turned due to signal fluctuations at the control terminal of the control switch.

[0125] Figure 8 The illustrated embodiments are compared to Figure 7 The difference in the illustrated embodiment is that the signal conversion unit further includes diodes D3 and D4; the anode of diode D3 is connected to the signal output terminal of the communication control module, and the cathode of diode D3 is connected to the control terminal of the control switch; the anode of diode D4 is connected to the output terminal of the power monitoring subunit, and the cathode of diode D4 is connected to the control terminal of the control switch.

[0126] In the technical solution provided in this application embodiment, by setting diodes D3 and D4 in the signal conversion unit and adopting the above connection method, there is no interference between the signal output terminal of the communication control module and the signal output terminal of the power monitoring subunit, thus achieving effective signal isolation, avoiding the risk of control switch malfunction due to signal interference, and improving the control reliability of the control switch.

[0127] Figure 8 The illustrated embodiments are compared to Figure 7 The difference in the illustrated embodiment is that the output terminal of the power monitoring subunit is also connected to the detection terminal of the communication control module; the communication control module is also used to reset the output second voltage signal to the output first voltage signal when it receives the second level signal output by the power monitoring subunit and the signal output terminal of the communication control module outputs the second voltage signal.

[0128] In some embodiments, the power monitoring device can output a second level signal of a preset duration to ensure that the control switch is in the on state for the preset duration, and enable the communication control module to reset the output second voltage signal to the output first voltage signal.

[0129] In some embodiments, the duty cycle of the pulse width modulation voltage signal output by the signal output terminal of the communication control module is a preset duty cycle. When the signal output terminal of the communication control module resets the output second voltage signal to output the first voltage signal, it will continue to output the pulse width modulation voltage signal according to the preset duty cycle.

[0130] In the technical solution provided in this application embodiment, when the power supply voltage at the power supply terminal of the communication control module is less than or equal to a preset voltage, the output second voltage signal is reset to the first voltage signal. This allows the pulse width modulation voltage signal output by the communication control module to be adjusted according to the power consumption of the communication control module. This avoids the problem that when the voltage signal output at the signal output terminal of the communication control module is not reset, the power monitoring device outputs a second level signal to the control switch to turn on the control switch for a period of time, but the power stored in the energy storage unit cannot be maintained until the pulse width modulation voltage signal reaches the first voltage signal, causing the power monitoring device to need to output a second level signal to the control switch to turn on the control switch again. Thus, this application embodiment can reduce the frequency of control switch operation by resetting the voltage signal output at the signal output terminal of the communication control module.

[0131] In some embodiments, when the communication control module enters a low-power mode, the signal output terminal of the communication control module outputs a pulse width modulation voltage signal; when the communication control module exits the low-power mode, the signal output terminal of the communication control module continuously outputs a second voltage signal; the signal control module is further configured to continuously output a second level signal to the enable module according to the continuously output second voltage signal; the enable module is further configured to stop supplying power to the communication control module according to the continuously output second level signal.

[0132] In the technical solution provided in this application embodiment, when the communication control module exits the low-power mode, it continuously outputs a second voltage signal. The signal control module will continuously send a second level signal to the enable module based on this continuously output second voltage signal. The enable module will then stop supplying power to the communication control module accordingly, thus avoiding the situation where the enable module still supplies power to the communication control module when the communication control module exits the low-power mode. Therefore, this embodiment can reduce the power consumption of the battery module.

[0133] In some embodiments, each time the communication control module outputs a first voltage signal to enable the enable module to supply power to the communication control module, the voltage at the power supply terminal of the communication control module rises from a first power supply voltage to a target power supply voltage; each time the communication control module outputs a second voltage signal to enable the signal control module to supply power to the communication control module, the voltage at the power supply terminal of the communication control module drops from the target power supply voltage to a second power supply voltage; wherein, the target power supply voltage is the upper limit power supply voltage of the communication control module; and both the first power supply voltage and the second power supply voltage are greater than the lower limit power supply voltage of the communication control module.

[0134] In the technical solution provided in this application embodiment, both the first supply voltage and the second supply voltage are greater than the lower limit supply voltage of the communication control module. Therefore, even when the communication control module enters a low-power mode, the supply voltage provided to the communication control module is still higher than the lower limit supply voltage of the communication control module. This avoids the problem of the communication control module losing power and causing control abnormalities due to the first lower limit supply voltage at the power supply end of the communication control module, thereby improving the reliability of power supply to the communication control module. Furthermore, by outputting periodically alternating first and second voltage signals by the communication control module, the supply voltage of the communication control module fluctuates between the upper and lower limit supply voltages. This ensures that the supply voltage of the communication control module is always maintained within the effective operating range, avoiding functional abnormalities of the communication control module due to excessively low voltage. It also reduces the power consumption of the communication control module through voltage fluctuations, thereby reducing the power consumption of the communication control module while ensuring its normal operation in low-power mode.

[0135] Figure 9 A schematic diagram of the power supply circuit for the communication control module provided in the fourth embodiment is shown below. Figure 9 As shown, Figure 9 Compared to the example Figure 6 The difference in this embodiment lies in that the enabling module includes an on / off control module, a voltage regulator module, and a voltage conversion module. The control terminal of the on / off control unit is connected to the output terminal of the signal control module, the first conducting terminal of the on / off control unit is connected to the battery module, and the second conducting terminal of the on / off control unit is connected to the control terminal of the voltage conversion unit. The control terminal of the voltage conversion unit is also connected to the first terminal of the voltage regulator unit, the first conducting terminal of the voltage conversion unit is connected to the battery module, and the second conducting terminal of the voltage conversion unit is connected to the power supply terminal of the communication control module.

[0136] In some embodiments, the second terminal of the voltage regulator unit is connected to the ground terminal.

[0137] The on / off control unit is used to turn on the first and second on terminals of the on / off control unit according to the first level signal, so that the voltage provided by the battery module breaks down the voltage regulator unit, and the voltage at the first terminal of the voltage regulator unit is clamped at the breakdown voltage.

[0138] The voltage conversion unit is used to supply power to the communication control module based on the breakdown voltage.

[0139] In the technical solution provided in this application embodiment, the enabling module includes an on / off control module, a voltage regulator module, and a voltage conversion module. When the on / off control module receives a first-level signal, it turns on the battery module and the voltage regulator module, causing the voltage regulator module to break down. The voltage at the first terminal of the voltage regulator module is clamped at the breakdown voltage, allowing the voltage conversion module to output a fixed voltage signal to the communication control module based on the fixed breakdown voltage. This reliably raises the power supply terminal of the communication control module to the target power supply voltage. When the control module receives a second-level signal, it disconnects the connection between the battery module and the voltage regulator module. This periodic power supply reduces the energy consumption of the battery module and minimizes power loss. Furthermore, it avoids the impact of battery module voltage fluctuations on the higher voltage signal output by the enabling module, improving the stability of the voltage signal output.

[0140] In some embodiments, the on / off control unit includes a current-limiting resistor R3, a current-limiting resistor R4, and a field-effect transistor Q2.

[0141] The current-limiting resistor R3 is connected between the battery module and the gate of the field-effect transistor Q2; the current-limiting resistor R4 is connected between the battery module and the first conducting terminal of the field-effect transistor Q2, and the second conducting terminal of the field-effect transistor Q2 is connected to the control terminal of the voltage conversion unit.

[0142] In the technical solution provided in this application embodiment, by setting a current-limiting resistor R3, the phenomenon that excessive current input to the gate of the field-effect transistor Q2 can be prevented, which may cause the field-effect transistor Q2 to be easily damaged can be prevented; by setting a current-limiting resistor R4, the battery module provides current to the control terminal of the voltage conversion module through the current-limiting resistor R4 (for example, providing current to the base of the N-type transistor Q3), which can prevent excessive current supplied to the base of the N-type transistor Q3 from causing the N-type transistor Q3 to be easily damaged, and can also limit the current supplied to the voltage regulator module (for example, the Zener diode ZD).

[0143] In some embodiments, the voltage regulation unit includes a Zener diode ZD and a pull-down resistor R5, and the voltage conversion unit includes an N-type transistor Q3 and a current-limiting resistor R6.

[0144] The cathode of Zener diode ZD is connected to the base of N-type transistor Q3, and the anode of Zener diode ZD is connected to the ground terminal; the first end of pull-down resistor R5 is connected to the base of N-type transistor Q3, and the second end of pull-down resistor R5 is connected to the ground terminal.

[0145] The collector of the N-type transistor Q3 is connected to the first end of the current-limiting resistor R6, the emitter of the N-type transistor Q3 is connected to the power supply terminal of the communication control module, and the second end of the current-limiting resistor R6 is connected to the battery module.

[0146] Figure 10A schematic diagram of the power supply circuit for the communication control module provided in the fifth embodiment is shown below. Figure 10 As shown, Figure 10 The power supply circuit for the communication control module provided in the embodiment is... Figure 8 Examples and Figure 9 The combination of embodiments. In Figure 10 In the illustrated embodiment, the power supply circuit of the communication control module includes a signal control module and an enable module.

[0147] Among them, the battery module connected to the enabling module can be a lithium battery pack of the energy storage system, which is used for energy storage and discharge functions and is an important component of the energy storage power system. The output voltage of the battery module can be VBAT.

[0148] The signal control module includes a power monitoring device, diodes D3 and D4, a current-limiting resistor R1, a pull-down resistor R2, an N-type transistor Q1, and an energy storage unit. The main and auxiliary power supply systems are connected in parallel with the power supply circuits of the communication control module. The main and auxiliary power supply systems are connected between the power supply terminals of the battery module and the communication control module, and the power supply circuit of the communication control module is connected between the power supply terminals of the battery module and the communication control module. When the communication control module is operating normally, the signal output terminal of the communication control module is invalid or does not output a voltage signal. Power is supplied to the communication control module through the main and auxiliary power supply systems to maintain its normal operation. The main and auxiliary power supply systems can be connected to the anode of diode D2, and the cathode of diode D2 can be connected to the power supply terminal of the communication control module. This prevents the power supplied by the communication control module's power supply circuit from entering the main and auxiliary power supply systems, thus avoiding energy consumption in the main and auxiliary power supply systems. When the communication control module enters a low-power mode, the main and auxiliary power supply systems no longer supply power to the communication control module. The power supply circuit of the communication control module provided in this embodiment supplies power to the communication control module, thereby taking over the power supply of the main and auxiliary power supply systems and preventing abnormal power loss of the communication control module.

[0149] Among them, the control terminal current limiting resistor R1 is the base current limiting resistor of the N-type transistor Q1, and the pull-down resistor R2 can reliably ensure that when the power monitoring device does not output a signal, the end of the pull-down resistor R2 connected to the control terminal current limiting resistor R1 is at a low level, which plays a filtering role; the energy storage unit is for energy storage, and for example, the energy storage unit is a capacitor.

[0150] The enable module includes current-limiting resistors R3 and R4, pull-down resistors R5 and R6, an N-type transistor Q3, a P-type field-effect transistor Q2, and a voltage regulator ZD (the voltage regulator may include a Zener diode).

[0151] The POW_EN signal is used to control the turn-on and turn-off of the P-type field-effect transistor Q2. When the N-type transistor Q1 is not conducting, the POW_EN signal is pulled up to the VBAT high level signal; when the N-type transistor Q1 is conducting, the POW_EN signal is pulled down to the low level signal. When the POW_EN signal is low, the P-type MOSFET Q2 is turned on. The VBAT voltage passes through the current-limiting resistor R4, the P-type MOSFET Q2, and the Zener diode ZD. Zener diode ZD breaks down, and the base of the N-type transistor Q3 is clamped at the breakdown voltage of Zener diode ZD. The voltage output by N-type transistor Q3 is the breakdown voltage of Zener diode ZD minus the emitter voltage drop of N-type transistor Q3 (typically 0.7V). For example, by selecting the breakdown voltage of Zener diode ZD, the desired VCC_MCU voltage is obtained after passing through the enable module. That is, when the POW_EN signal is low, the enable module effectively outputs the VCC_MCU voltage. VCC_MCU is the voltage required for the controller to operate normally (or the voltage required for the main control module to be in working state).

[0152] Conversely, when the POW_EN signal is high, the P-type MOSFET Q2 is turned off, and the base of the N-type transistor Q3 is pulled down to ground (GND) by the pull-down resistor R5. The N-type transistor Q3 is turned off, so the voltage output by the N-type transistor Q3 is 0V at this time; that is, when the POW_EN signal is high, the enable module has no output voltage (or stops outputting voltage signals, or in other words, does not output voltage signals).

[0153] When the P-type field-effect transistor Q2 is turned on, the current-limiting resistor R4 provides current I to the emitter of the N-type transistor Q3. B Since the N-type transistor Q3 is operating in amplification mode, the current between the collector (C) and emitter (E) is I. C =I B ×h (where h is the amplification factor of the transistor), the selection of the current-limiting resistor R6 determines the power supply current capability of the voltage conversion module to step down.

[0154] Figure 11 This is a schematic diagram showing the correspondence between the signal output terminal of the communication control module provided in the first embodiment and the voltage change at the power supply terminal of the communication control module.

[0155] When the communication control module enters low-power mode, based on the power supply range of 1.8V-3.6V (lower and upper limits of the power supply voltage) in low-power standby and low-power sleep modes, combined with the actual power consumption data of the communication control module in low-power mode and the sustaining time of the energy storage unit, the pulse width modulation voltage signal is designed as follows: Figure 11The duty cycle waveform is shown. When the communication control module is working normally, its signal output terminal outputs a low voltage signal. Since the main and auxiliary power supply systems supply power to the communication control module, the voltage at the power supply terminal of the communication control module is VCC_MCU (for example, the voltage value of VCC_MCU is...). Figure 11 (The voltage value of VCC2 is the same). When the communication control module enters low-power mode (corresponding to time T1), the signal output terminal of the communication control module outputs a pulse width modulation voltage signal. When the pulse width modulation voltage signal is a high voltage signal, for example, corresponding to the Ton period within a cycle, the high voltage signal drives the N-type transistor Q1 to conduct through diode D3, causing the POW_EN signal output to the control terminal of the enable module to be pulled low to an effective low level, thereby enabling the enable module. The enable module supplies power to the energy storage unit and the communication control module, and the voltage at the power supply terminal of the communication control module gradually increases. When the pulse width modulation voltage signal is a low voltage signal, corresponding to the Toff period within a cycle, the N-type transistor Q1 is cut off, and the POW_EN signal output to the control terminal of the enable module is pulled up by the current limiting resistor R3, causing the enable module to stop working. The energy storage unit supplies power to the communication control module, and the voltage at the power supply terminal of the communication control module gradually decreases. For example, at time T2, which is the end of the Toff period, the voltage at the power supply terminal of the communication control module drops to VCC1.

[0156] The enable module controls its start and stop operation via a pulse-width modulated voltage signal output from the communication control module. The voltage at the power supply terminal of the communication control module varies between VCC1 and VCC2. VCC1 has the same value in different cycles, or its value may vary in different cycles depending on the actual power consumption of the communication control module. During the Toff period of the pulse-width modulated voltage signal, the enable module stops operating, incurring no power loss and effectively improving its energy efficiency.

[0157] The power monitoring device is connected to the power supply terminal of the communication control module and constantly monitors the voltage value of the power supply terminal. When the voltage value of the power supply terminal of the communication control module is lower than the set value of the power monitoring device (e.g., ...), the device will detect the voltage drop. Figure 6 If Vmin is greater than the lower limit supply voltage, then the POW_EN0 signal (i.e., the second level signal mentioned above) is output. The POW_EN0 signal passes through the current limiting resistor R1 and diode D4 at the control terminal, driving the N-type transistor Q1 to conduct. The POW_EN signal output to the control terminal of the enable module is pulled down to GND (the low-level signal at the ground terminal) through the N-type transistor Q1. That is, the POW_EN signal is low level, forcibly enabling the enable module so that the enable module can work and supply power to the power supply terminal of the communication control module.

[0158] When the power monitoring device detects that the voltage at the power supply terminal of the communication control module is lower than its set value, it outputs a POW_EN0 signal. Once the voltage at the power supply terminal of the communication control module returns to normal, the power monitoring device clears the alarm, and the POW_EN0 signal becomes low. To prevent the energy storage unit from failing to maintain power supply until the next valid Ton moment of the pulse width modulation voltage signal after POW_EN0, the design sends the POW_EN0 signal from the power monitoring device to the I / O detection port of the communication control module (i.e., the detection terminal of the aforementioned communication control module). Upon receiving a valid POW_EN0 signal, the communication control module outputs a valid pulse width modulation voltage signal, resetting the valid start signal of the pulse width modulation voltage signal. This involves first outputting a high-level signal during the Ton period, followed by a low-level signal during the Toff period, then another high-level signal during the Ton period, and so on, outputting the pulse width modulation voltage signal.

[0159] Figure 11 In the illustrated embodiment, Vmin voltage is the alarm limit value of the power monitoring device. If VCC_MCU is lower than this value, the power monitoring device outputs a second-level signal. The pulse width modulation voltage signal is a preset fixed-frequency, fixed-duty-cycle signal. After the communication control module enters low-power mode, it continuously executes the pulse width modulation voltage signal. To avoid the MCU from experiencing abnormal power loss due to a rapid power drop in VCC_MCU before the next Ton time arrives, a power monitoring device is added to the circuit design. The alarm trigger voltage Vmin of the power monitoring device is less than VCC2 and greater than the lower limit operating voltage of the communication control module. After the power monitoring device triggers the alarm, it outputs a second-level signal (POW_EN0 signal) to force the enable module to start working and maintain the voltage of VCC_MCU.

[0160] Figure 12 This diagram illustrates the correspondence between the signal output from the signal output terminal of the communication control module provided in the second embodiment and the voltage change at the power supply terminal of the communication control module. Figure 12 Examples and Figure 11 The difference in the embodiments is that when the communication control module enters low-power mode (corresponding time T1), in Figure 6 In the process, the output pulse width modulated voltage signal is initially a low voltage signal, in Figure 12 In the process, the output pulse width modulation voltage signal is initially a high voltage signal.

[0161] In addition, Figure 12During the process, at time T3, the communication control module needs to exit the low-power mode. The communication control module stops outputting the pulse width modulation voltage signal and continues to output a low voltage signal. The main auxiliary power supply system takes over the power supply circuit of the communication control module to supply power to the communication control module. The voltage at the power supply terminal of the communication control module gradually increases to VCC_MCU (i.e., VCC2) and is maintained at VCC_MCU.

[0162] Figure 13 This diagram illustrates the correspondence between the signal output from the low-power signal output terminal of the communication control module, the voltage change at the power supply terminal of the communication control module, and the activation pulse output from the main signal output terminal of the communication control module in some embodiments. Figure 13 Compared to the example Figure 12 The difference in this embodiment is that, at time T3, the communication control module needs to wake up the main control module. The main signal output terminal of the communication control module outputs an activation pulse, and the low-power output terminal outputs a low-level signal to enable the main and auxiliary power supply systems to supply power to the communication control module. The power supply terminal of the communication control module gradually rises to VCC_MCU and maintains VCC_MCU. When the main control module enters sleep mode, the signal output by the low-power signal output terminal of the communication control module is a pulse-width modulated voltage signal. The explanation of how this pulse-width modulated voltage signal affects the voltage change at the power supply terminal of the communication control module can be found in the description of the relevant embodiments above.

[0163] In the technical solution provided in this application embodiment, the start and stop of the low-power auxiliary power supply system are controlled by the POW_PWM signal, which can significantly reduce the power loss of the low-power auxiliary power supply system and achieve the effect of ultra-low power consumption of the energy storage power supply in low-power mode.

[0164] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0165] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A power supply management circuit, characterized in that, The power management circuit includes a controller, a battery module, a main auxiliary power module, and a low-power auxiliary power module; the control terminals of the main auxiliary power module and the low-power auxiliary power module are both connected to the signal output terminal of the controller, and the main auxiliary power module and the low-power auxiliary power module are connected in parallel between the battery module and the power supply terminal of the controller; the signal output terminal of the controller outputs a signal corresponding to the state of the controller. When the controller is in an active state, the main auxiliary power module is in a conducting state, and the battery module supplies power to the controller through the main auxiliary power module; when the controller is in a sleep state, the low-power auxiliary power module is in a conducting state, and the battery module supplies power to the controller through the low-power auxiliary power module.

2. The power supply management circuit according to claim 1, characterized in that, The controller includes a communication control module and a main control module; The communication terminal of the communication control module is connected to the communication terminal of the main control module. The power supply terminals of the communication control module and the main control module are both connected to the output terminal of the main auxiliary power supply module. The power supply terminal of the communication control module is also connected to the output terminal of the low-power auxiliary power supply module. When the main control module is in operation, the battery module supplies power to the communication control module and the main control module through the main auxiliary power module; when the main control module is in sleep mode, the battery module supplies power to the communication control module through the low-power auxiliary power module.

3. The power supply management circuit according to claim 2, characterized in that, The main signal output terminal of the main control module is connected to the control terminal of the main auxiliary power supply module, and the low-power signal output terminal of the communication control module is connected to the control terminal of the low-power auxiliary power supply module.

4. The power supply management circuit according to claim 3, characterized in that, The main signal output terminal of the communication control module is connected to the control terminal of the main auxiliary power supply module.

5. The power supply management circuit according to any one of claims 2 to 4, characterized in that, The main and auxiliary power supply module includes a main and auxiliary power supply system and an on / off controller; The first conducting terminal of the on / off controller is connected to the battery module, the second conducting terminal of the on / off controller is connected to the input terminal of the main auxiliary power system, the controlled terminal of the on / off controller is connected to the main signal output terminal of the main control module, and the controlled terminal of the on / off controller is also connected to the main signal output terminal of the communication control module; the power supply terminal of the communication control module and the power supply terminal of the main control module are both connected to the output terminal of the main auxiliary power system.

6. The power supply management circuit according to claim 5, characterized in that, The main auxiliary power supply module also includes a first diode; the anode of the first diode is connected to the main signal output terminal of the main control module, and the cathode of the first diode is connected to the controlled terminal of the on / off controller.

7. The power supply management circuit according to any one of claims 2 to 4, characterized in that, The low-power auxiliary power module includes a low-power auxiliary power system and a second diode; The input terminal of the low-power auxiliary power supply system is connected to the battery module, the output terminal of the low-power auxiliary power supply system is connected to the power supply terminal of the communication control module, and the control terminal of the low-power auxiliary power supply system is connected to the low-power signal output terminal of the communication control module; the cathode of the second diode is connected to the power supply terminal of the communication control module, and the anode of the second diode is connected to the power supply terminal of the main control module.

8. The power supply management circuit according to claim 7, characterized in that, The low-power auxiliary power supply system includes a signal control module and an enable module; The input terminal of the signal control module is connected to the low-power signal output terminal of the communication control module; the output terminal of the signal control module is connected to the control terminal of the enable module; the input terminal of the enable module is connected to the battery module; and the output terminal of the enable module is connected to the power supply terminal of the communication control module. When the controller is in a sleep state, the enable module is turned on, and the battery module supplies power to the communication control module through the enable module.

9. The power supply management circuit according to any one of claims 2 to 4, characterized in that, The power management circuit also includes a power management module and a load interface; The input terminal of the power management module is connected to the battery module, the output terminal of the power management module is connected to the load interface, and the controlled terminal of the power management module is connected to the control terminal of the main control module.

10. An energy storage power source, characterized in that, The energy storage power supply includes the power management circuit as described in any one of claims 1 to 9.

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