Energy storage device
By simulating the front end and power button design, the problem of high power consumption in standby mode of energy storage devices is solved, achieving low power standby and extending device life, while reducing production costs.
Patent Information
- Application Number
- CN202422896391.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing energy storage devices keep their microcontroller units (MCUs) powered on even when not in use for extended periods, resulting in high power consumption, shortened device lifespan, and increased costs.
The design employs an analog front-end and a power button. The analog front-end receives the power-on command to wake up the energy storage device, and supplies power only during power-on, reducing standby power consumption and minimizing the MCU's power consumption.
It achieves a standby power consumption of less than 10 microamps, extending the storage time and lifespan of the device, while reducing production costs.
Smart Images
Figure CN223502612U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of energy storage technology, and in particular relates to an energy storage device. Background Technology
[0002] Currently, even when the energy storage device is not used for a long time (such as when the energy storage device enters hibernation or is shut down), the charging and discharging switches of the energy storage device are kept closed, so that the microcontroller unit (MCU) of the energy storage device is always powered on.
[0003] Because MCUs consume a lot of power when they are always powered on, prolonged high power consumption can reduce the lifespan of energy storage devices. Summary of the Invention
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an energy storage device that can reduce the power consumption of the energy storage device under operating conditions such as hibernation and shutdown, and extend the service life of the energy storage device.
[0005] The energy storage device of this application includes: a battery module; a power switch, one end of which is electrically connected to the battery module and generates a power-on command when the power is on; and an analog front-end, which is powered by the battery module and electrically connected to the other end of the power switch, and receives the power-on command.
[0006] In some embodiments, the energy storage device further includes a controller and a power supply module. The power supply module is connected to the battery module, and its power supply terminal is electrically connected to the controller. The power supply module's enable terminal is electrically connected to the analog front end. When the analog front end receives the power-on command, it sends a power supply enable signal to the enable terminal so that the power supply module supplies power to the controller.
[0007] In some embodiments, the analog front end further includes a voltage regulator, which is used to convert the supply voltage of the battery module into a preset voltage threshold, so as to send the power supply enable signal to the power supply module based on the preset voltage threshold.
[0008] In some embodiments, the energy storage device further includes: a bus capacitor; a precharge switch assembly connected to the bus capacitor and the battery module; the controller generates a precharge command when powered on; the controller is communicatively connected to the analog front end, and the analog front end receives the precharge command to control the precharge switch assembly to close and precharge the bus capacitor.
[0009] In some embodiments, the energy storage device further includes a charge / discharge switch assembly, and the controller is further configured to generate a charge / discharge command when the voltage of the bus capacitor is greater than a preset voltage; the analog front end receives the charge / discharge command to control the charge / discharge switch assembly to charge or discharge.
[0010] In some embodiments, the energy storage device further includes a charge / discharge switch assembly connected to the analog front end. The power switch button is connected to the controller. When the power switch button receives a power-off operation, it generates a power-off command. The controller receives the power-off command to control the analog front end to stop sending the power supply enable signal and to control the individual switches of the charge / discharge switch assembly to open via the analog front end.
[0011] In some implementations, the analog front end enters a sleep state after it stops sending the power enable signal and the switches of the charge / discharge MOS components are turned off.
[0012] In some embodiments, the energy storage device further includes a charging interface connected to the power supply module to supply power to the power supply module.
[0013] In some implementations, when the charging interface is connected to an external power source, the power supply module supplies power to the controller. When the controller is powered on, it generates a wake-up command and sends it to the analog front-end to wake up the analog front-end.
[0014] In some implementations, the simulated front end is in a sleep state before receiving the power-on command or the wake-up command.
[0015] The energy storage device disclosed in this application includes a battery module, a power button, and an analog front-end. One end of the power button is electrically connected to the battery module, generating a power-on command during operation. The analog front-end is powered by the battery module and electrically connected to the other end of the power button, receiving the power-on command. When the energy storage device needs to be powered on, the analog front-end receives the power-on command, meaning the device can be powered on by waking it up. When the energy storage device is powered off or in standby mode (not charging or discharging), the power consumption of the battery module only includes the power consumption of the analog front-end, which is typically less than 10 microamps. This achieves low power consumption in the power-off and standby states, effectively reducing the power consumption during sleep mode and extending the storage time and lifespan of the energy storage device.
[0016] Furthermore, with standby power consumption at the microampere level, even if the energy storage device is not used for a long time, its state of charge (SOC) will usually not change when it is turned on again. This can also extend the time it takes for the battery module of the energy storage device to enter the undervoltage point, thus avoiding affecting the lifespan of the energy storage device.
[0017] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description
[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0019] Figure 1 This is a schematic diagram of the energy storage device provided in the embodiments of this application. Detailed Implementation
[0020] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.
[0023] To facilitate understanding, the technical background and application scenarios of this application will be introduced below:
[0024] In related technologies, to extend the lifespan of energy storage devices in standby scenarios, a hibernation mode is typically set for them. In hibernation mode, the energy storage device shuts down some functional modules (e.g., communication modules), but its charging and discharging control module remains powered on, and the energy storage device's microcontroller unit (MCU) is always powered on. Because the MCU consumes a lot of power while constantly powered, this can lead to over-discharge and damage to the energy storage device, reducing its lifespan.
[0025] Therefore, there is also a partial shutdown sleep mode that powers only the Battery Management System (BMS) and periodically powers the MCU. Compared to the previous sleep mode, the partial shutdown sleep mode has lower power consumption (typically in the milliampere (mA) range).
[0026] However, in this hibernation mode, starting the energy storage device requires a power supply circuit based on the BMS system, which increases the cost of the BMS and thus the cost of the energy storage power supply.
[0027] In view of this, please refer to Figure 1 This application proposes an energy storage device 100, which includes:
[0028] Battery module 10;
[0029] Power button 20, one end of which is electrically connected to battery module 10, generates a power-on command when the power is on.
[0030] The analog front end 30 is powered by the battery module 10. The analog front end 30 is electrically connected to the other end of the power button 20 and receives the power-on command.
[0031] The battery module 10 can be used to store electrical energy input from an external power source into the energy storage device 100 for the energy storage device 100 to discharge. The battery module 10 includes a positive electrode (B+) and a negative electrode (B-).
[0032] The power switch 20 can be used to control the power on (and / or power off) of the energy storage device 100. The power switch 20 may include one power switch for controlling the power on and / or power off of the energy storage device 100; or, the power switch 20 may include a power switch and a power switch, with the power switch used to control the power on of the energy storage device 100 and the power switch used to control the power off of the energy storage device 100, etc.
[0033] The power-on command may include starting the energy storage device 100.
[0034] The analog front end 30 (Active Front End, AFE) can be used to convert analog signals into digital signals to achieve data acquisition and data processing of the energy storage device 100. The analog front end 30 can also be used for monitoring the battery module 10 of the energy storage device 100 (e.g., power monitoring).
[0035] The analog front-end 30 can be set on the BMS of the energy storage device 100, and the power on / off button 20 can be set on the main board of the energy storage device 100.
[0036] Specifically, the energy storage device 100 includes a battery module 10, a power switch 20, and an analog front-end 30. The power switch 20 is electrically connected to the battery module 10, and the other end is electrically connected to the analog front-end 30. The battery module 10 supplies power to the analog front-end 30. The analog front-end 30 is electrically connected to the power switch 20. In the event of a power-on operation (e.g., the power switch 20 receives a power-on operation (e.g., the power switch 20 is pressed or turned on), a power-on command can be generated and sent to the analog front-end 30. The analog front-end 30 is activated after receiving the power-on command. For example, taking the analog front-end 30 including an activation pin as an example, the power button 20 can be connected to the battery module 10 at one end and to the activation pin of the analog front-end 30 at the other end. The power-on operation can be to pull up (or pull down) the level of the power button 20. The power-on command can include a level signal that is pulled up (or pulled down). After receiving the level signal after being pulled up (or pulled down), the activation pin of the analog front-end 30 can activate the analog front-end 30. After activation, the analog front-end 30 can control the various components of the energy storage device 100 to respond to the power-on operation with the support of the electrical energy (i.e., B+, B-) of the battery module 10.
[0037] Thus, the energy storage device 100 includes a battery module 10, a power button 20, and an analog front-end 30. One end of the power button 20 is electrically connected to the battery module, generating a power-on command during operation. The analog front-end 30 is powered by the battery module 10 and is electrically connected to the other end of the power button 20, receiving the power-on command. When the energy storage device 100 needs to be powered on, the power-on command is received through the analog front-end 30, i.e., by waking up the analog front-end 30, the energy storage device 100 can be powered on. When the energy storage device 100 is in a power-off or standby state (at this time, the energy storage device 100 is not charging or discharging), the power consumption of the battery module 10 only includes the power consumption of the analog front-end 30, which is typically less than 10 microamps. This achieves low power consumption of the energy storage device 100 in power-off and standby states, effectively reducing the dormant power consumption of the energy storage device 100 in these states and extending its storage time and service life.
[0038] Furthermore, with standby power consumption at the microampere level, even if the energy storage device 100 is not used for a long time, its state of charge (SOC) will usually not change when it is turned on again. This can also extend the time for the battery module 10 of the energy storage device 100 to enter the undervoltage point, thus avoiding affecting the lifespan of the energy storage device 100.
[0039] Furthermore, compared to the current method of activating the sleep mode of the energy storage device 100 by setting up a power supply circuit based on a BMS system, this application does not require an additional power supply circuit based on a BMS system, which can reduce production costs.
[0040] Please see Figure 1 In some embodiments, the energy storage device 100 further includes a controller 40 and a power supply module 50. The power supply module 50 is connected to the battery module 10. The power supply terminal of the power supply module 50 is electrically connected to the controller 40. The enable terminal of the power supply module 50 is electrically connected to the analog front end 30. When the analog front end 30 receives a power-on command, it sends a power supply enable signal to the enable terminal so that the power supply module 50 supplies power to the controller 40.
[0041] The controller 40 can be used to issue control commands to manage various operations of the energy storage device 100 (e.g., controlling the charging and discharging of the energy storage device 100). For example, the controller 40 can be a microcontroller unit (MCU), a central processing unit (CPU), etc.
[0042] The power supply module 50 can be used to supply power to the controller 40.
[0043] The power supply enable signal can be used to control the power supply module 50 to supply power to the controller 40.
[0044] The controller 40 and the power supply module 50 can be installed on the main board of the energy storage device 100.
[0045] Optionally, the analog front-end 30 includes:
[0046] The voltage regulator 31 is used to convert the supply voltage of the battery module 10 into a preset voltage threshold, so as to send a power supply enable signal to the power supply module 50 based on the preset voltage threshold.
[0047] Among them, the voltage regulator 31 can be a low-dropout regulator (LDO) or the like. The analog front end 30 can output a voltage with a preset voltage threshold through the voltage regulator 31.
[0048] The preset voltage threshold can be 4 volts (V), 3.5V, 3.3V, 3V, etc.
[0049] Specifically, the battery module 10 can supply power to the power supply module 50. The power supply terminal of the power supply module 50 is electrically connected to the controller 40, and the enable terminal of the power supply module 50 is electrically connected to the analog front end 30. After receiving the power-on command, the analog front end 30 can convert the power supply voltage of the battery module 10 into a preset voltage threshold (taking 3.3V as an example) through the voltage regulator 31. The analog front end 30 then outputs a 3.3V voltage signal to the power supply module 50 as a power supply enable signal to activate the power supply module 50, so that the power supply module 50 can supply power to the controller 40, thereby activating the controller 40.
[0050] Please see Figure 1 In some embodiments, the energy storage device 100 further includes:
[0051] Bus capacitor;
[0052] The precharge switch assembly 60 is connected to the bus capacitor and the battery module 10. When the controller 40 is powered on, it generates a precharge command. The controller 40 is connected to the analog front end 30, which receives the precharge command to control the precharge switch assembly 60 to close and precharge the bus capacitor.
[0053] The bus capacitor can be a capacitor installed on the bus (the main conductor connecting and distributing power) of the energy storage device 100. The bus capacitor can help balance the voltage of the circuit of the energy storage device 100, reduce voltage fluctuations in the circuit, and improve circuit stability.
[0054] The switching component can be a metal-oxide-semiconductor field-effect transistor (MOS transistor). The pre-charge switching component 60 can be a pre-charge MOS transistor 60, and the pre-charge MOS transistor 60 can include one or more.
[0055] The communication connection between the controller 40 and the analog front-end 30 can be achieved by communication protocols such as Inter-Integrated Circuit (I2C or IIC) between the controller 40 and the analog front-end 30. For example, an I2C communication line can be set between the controller 40 and the analog front-end 30.
[0056] The pre-charge command can be used to pre-charge the energy storage device 100. Before charging, the energy storage device 100 can pre-charge the bus capacitor, raising its voltage and preventing current spikes that could damage circuit components when the relays in the energy storage device 100 are closed for charging and discharging. Therefore, based on the pre-charge command, the pre-charge switch assembly 60 can be closed to pre-charge the bus capacitor, thereby improving the safety and lifespan of the energy storage device.
[0057] Optionally, the energy storage device 100 also includes:
[0058] The charge / discharge switch assembly 70 and the controller 40 are also used to generate charge / discharge commands when the voltage of the bus capacitor is greater than a preset voltage; the analog front end 30 receives the charge / discharge commands to control the charge / discharge switch assembly 70 to charge or discharge.
[0059] The charge / discharge switch assembly 70 may include one or more charge / discharge MOSFETs 70, for example, including a charge MOSFET and a discharge MOSFET.
[0060] The preset voltage can be a preset percentage of the rated voltage of the bus capacitor, such as 70%, 80%, or 90% of the rated voltage of the bus capacitor.
[0061] Among them, the charge and discharge commands can be used to control the charging and discharging of the energy storage device 100.
[0062] Among them, the pre-charge MOSFET 60 and the charge / discharge MOSFET 70 can be installed on the BMS system.
[0063] Specifically, please refer to Figure 1 The following explanation uses I2C communication between controller 40 and analog front-end 30 as an example. When analog front-end 30 sends a power enable signal to the enable terminal of power supply module 50, enabling power supply module 50 to supply power to controller 40, controller 40 is now powered on. Controller 40 can generate a pre-charge command and send it to analog front-end 30 via I2C communication. Upon receiving the pre-charge command, analog front-end 30 can control the pre-charge MOSFET 60 to close, allowing pre-charging of the bus capacitor of battery module 10. When the voltage of the bus capacitor is greater than a preset voltage (e.g., 80% of the rated voltage of the bus capacitor), controller 40 determines that the energy storage device 100 is pre-charged, generates a charge / discharge command, and sends it to analog front-end 30 via I2C communication. Upon receiving the charge / discharge command, analog front-end 30 can control the charge / discharge MOSFET 70 to turn on for charging or discharging.
[0064] It is understandable that when the controller 40 is powered on, a self-test command can be issued first to test each component. If the self-test result shows that there is no fault, a pre-charge command can then be issued to improve the operational safety of the energy storage device 100.
[0065] Please see Figure 1 In some embodiments, the energy storage device 100 further includes a charge / discharge switch assembly 70 (charge / discharge MOSFET 70), which is connected to the analog front end 30. The power switch 20 is connected to the controller 40. When the power switch 20 receives a power-off operation, it generates a power-off command. The controller 40 receives the power-off command to control the analog front end 30 to stop sending power supply enable signals and to control the individual switches of the charge / discharge switch assembly 70 to open through the analog front end 30.
[0066] The shutdown command can be used to shut down the energy storage device 100 and / or control the energy storage device 100 to hibernate or standby mode.
[0067] Optionally, the shutdown command can be generated after the power button 20 receives a shutdown operation and sent to the controller 40; the shutdown command can also be generated by the controller 40, for example, the controller 40 can generate it based on the operating conditions of the energy storage device 100, such as when the energy storage device 100 has not performed charging and discharging operations for a preset time (e.g., 1 hour (h), 1.5h, 2h, 2.5h, etc.) or the energy storage device 100 has not output power for a longer time than the pre-charging time, etc., the shutdown command is generated.
[0068] Specifically, when the analog front-end 30 stops sending power enable signals to the power supply module 50, the power supply module 50 loses power and no longer supplies power to the controller 40.
[0069] Optionally, the analog front-end 30 enters a sleep state after it stops sending the power supply enable signal and after each switch of the charging and discharging MOS component is turned off.
[0070] In the case of the energy storage device 100 in a dormant state, the battery module 10 only provides power to the analog front end 30 for waking up.
[0071] Specifically, the energy storage device 100 also includes a charge / discharge switch assembly 70, which is connected to the analog front-end 30. A power switch 20 is connected to the controller 40. When the power switch 20 receives a power-off operation (e.g., the power switch 20 is pressed), it can generate a power-off command. The controller 40 can receive the power-off command and respond to it (e.g., by sending a power-off command message to the analog front-end 30 via I2C communication), controlling the analog front-end 30 to stop sending power enable signals to the power supply module 50. The power supply module 50 then stops supplying power to the controller 40, and the controller 40 will continue to lose power until it shuts down. The controller 40 can also control the individual switches of the charge / discharge switch assembly 70 to open via the analog front-end 30, thereby disabling the charge / discharge function of the energy storage device 100. After the analog front-end 30 stops sending the power supply enable signal and the switches of the charging and discharging MOS components are turned off, it can enter a sleep state. At this time, the battery module 10 of the energy storage device 100 only needs to supply power to wake up the analog front-end 30, so as to achieve low power consumption of the energy storage device 100 in the sleep state.
[0072] In other words, this application sets the operating conditions of the energy storage device 100 to power-on and power-off conditions. In the power-on condition, the energy storage device 100 performs charging and discharging, while in the power-off condition, the power consumption of the energy storage device 100 only includes the power consumption to maintain the analog front-end 30 (generally less than 10uA), which effectively reduces the power consumption of the energy storage device 100 when it is not performing charging and discharging, which is beneficial to the storage of the energy storage device 100.
[0073] In some embodiments, the energy storage device 100 further includes a charging interface 80, which is connected to the power supply module 50 to supply power to the power supply module 50.
[0074] Optionally, when the charging interface 80 is connected to an external power source, the power supply module 50 supplies power to the controller 40. When the controller 40 is powered on, it generates a wake-up command and sends it to the analog front-end 30 to wake up the analog front-end 30.
[0075] The wake-up command is a level signal. For example, the analog front-end 30 may include an activation pin, and the wake-up command may be a high-level signal. The controller 40 may generate a high-level wake-up command to the activation pin of the analog front-end 30 to wake up the analog front-end 30.
[0076] Optionally, the analog front-end 30 is in a sleep state before receiving a power-on command or a wake-up command.
[0077] Specifically, the charging interface 80 of the energy storage device 100 can be connected to an external power source, which supplies power to the energy storage device 100 through the charging interface 80 (for example, the external power source supplies power to the energy storage device 100 through the charging interface 80, and the electrical energy is stored in the battery module 10). When the charging interface 80 is connected to an external power source, the electrical energy from the external power source can flow into the power supply module 50 through the charging interface 80, and the power supply module 50 is energized and supplies power to the controller 40. At this time, the analog front-end 30 is in a dormant state, while the controller 40, when powered on, can generate a wake-up command and send it to the analog front-end 30 through communication with it (e.g., I2C communication) to wake up the analog front-end 30. After waking up the analog front-end 30, the controller 40 can also generate a pre-charge command to control the pre-charge MOSFET 60 to close through the analog front-end 30, thereby pre-charging the bus capacitor. After the pre-charge is completed, the controller 40 controls the charge-discharge MOSFET 70 to close (e.g., controls the charging MOSFET to close) through the analog front-end 30 to charge the battery module 10 of the energy storage device 100 through an external power supply, thereby realizing the charging function of the energy storage device 100.
[0078] It is understandable that the controller 40 can perform a self-test before generating a wake-up command. If the self-test result indicates that the energy storage device 100 is not faulty, then the controller 40 can generate a wake-up command to wake up the analog front-end 30.
[0079] In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. An energy storage device, characterized in that, include: Battery module; A power button, one end of which is electrically connected to the battery module, generates a power-on command when the power is on. The analog front end is powered by the battery module and is electrically connected to the other end of the power button, and receives the power-on command.
2. The energy storage device according to claim 1, characterized in that, The energy storage device also includes a controller and a power supply module. The power supply module is connected to the battery module. The power supply terminal of the power supply module is electrically connected to the controller. The enable terminal of the power supply module is electrically connected to the analog front end. When the analog front end receives the power-on command, it sends a power supply enable signal to the enable terminal so that the power supply module supplies power to the controller.
3. The energy storage device according to claim 2, characterized in that, The simulation front end also includes: A voltage regulator is used to convert the power supply voltage of the battery module into a preset voltage threshold, so as to send the power supply enable signal to the power supply module based on the preset voltage threshold.
4. The energy storage device according to claim 2, characterized in that, The energy storage device also includes: Bus capacitor; A precharge switch assembly is provided, which is connected to the bus capacitor and the battery module. When the controller is powered on, it generates a precharge command. The controller is communicatively connected to the analog front end, which receives the precharge command to control the precharge switch assembly to close and precharge the bus capacitor.
5. The energy storage device according to claim 4, characterized in that, The energy storage device also includes a charge / discharge switch assembly, and the controller is further configured to generate a charge / discharge command when the voltage of the bus capacitor is greater than a preset voltage; the analog front end receives the charge / discharge command to control the charge / discharge switch assembly to charge or discharge.
6. The energy storage device according to claim 2, characterized in that, The energy storage device also includes a charge / discharge switch assembly, which is connected to the analog front end. The power switch is connected to the controller. When the power switch receives a power-off operation, it generates a power-off command. The controller receives the power-off command to control the analog front end to stop sending the power supply enable signal and to control the individual switches of the charge / discharge switch assembly to open through the analog front end.
7. The energy storage device according to claim 6, characterized in that, After the analog front end stops sending the power enable signal and the switches of the charging and discharging MOS components are turned off, it enters a sleep state.
8. The energy storage device according to claim 2, characterized in that, The energy storage device also includes a charging interface, which is connected to the power supply module to supply power to the power supply module.
9. The energy storage device according to claim 8, characterized in that, When the charging interface is connected to an external power source, the power supply module supplies power to the controller. When the controller is powered on, it generates a wake-up command and sends it to the analog front end to wake up the analog front end.
10. The energy storage device according to claim 9, characterized in that, The simulated front end is in a sleep state before receiving the power-on command or the wake-up command.