A method for power-off detection and incoming call identification and a battery device using the method

Abstract

The present invention provides a method for power-off detection and incoming power identification and a battery device using the method. The method includes steps of user parameter setting, external power-off identification, intelligent power supply and backup power supply mode selection, external power supply incoming power identification, and power supply mode selection. At the same time, the present invention also provides a battery device composed of a power management system, an intelligent power storage module, a backup power supply module, and an external power supply module. This battery device can ensure the normal operation of uninterrupted power supply to the load. The present invention improves the current system equipment method of connecting a storage battery to a host through an uninterruptible power supply and converting direct current into commercial power by module circuits such as a host inverter; through the power supply and distribution management of the intelligent power management system, using various software and hardware control modes, intelligently switching according to the power supply and distribution strategy required by the customer, achieving external power supply incoming power identification and power-off alarm work, and enabling the load to be in a state of uninterrupted power supply.

Description

Technical Field

[0001] The present invention relates to a power supply and distribution method and a device using the method, and particularly to a method for detecting power failure and identifying power restoration and a battery device using the method. Background Art

[0002] Currently, in industries involving data communication such as communication, servers, and monitoring and security, in order to ensure the stable use of each communication system, a backup power supply is usually configured for each communication system so that when the external power supply device is powered off, the backup power supply can directly supply power or invert power to the load of each communication system. Since the backup power supply is usually a rechargeable power supply, after the external power supply device resumes power supply, generally, the external power supply device needs to immediately charge the backup power supply to prepare for emergency use when the external power supply device is powered off next time.

[0003] Currently, the more widely used one is the UPS (uninterruptible power supply). The uninterruptible power supply (UPS) is a system device that connects a storage battery (mostly lead-acid maintenance-free battery) to the host, and the host inverter and other module circuits convert direct current into commercial power; it is mainly used to provide stable and uninterrupted power supply for a single computer, a computer network system or other power electronic devices such as solenoid valves and pressure transmitters. If the customer load (various electrical equipment) is large, an intelligent switching system with multiple power supply and distribution modes and multiple detection and judgment mechanisms is required to ensure that the load (various electrical equipment) is always in a normal working state through seamless connection. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a method for detecting power failure and identifying power restoration and a battery device using the method, which are used to solve the problem of detecting power failure and identifying power restoration in multiple power supply and distribution modes set according to customer needs in the prior art.

[0005] To achieve the above object and other related objects, the present invention provides a method for detecting power failure and identifying power restoration, including the following steps:

[0006] A user parameter setting step, in which the user can configure the power supply mode according to the demand, including selecting an external power supply mode or an intelligent energy storage module power supply mode. In the external power supply mode, the external power supply charges the intelligent energy storage module and the backup power supply module.

[0007] External power failure identification step: when the external power supply mode is on, if the intelligent power storage module detects that a reverse current occurs internally or the backup power module receives a reverse current, the intelligent power management system determines that the external power supply fails, and sends a power failure alarm signal to the background; when the intelligent power storage module supplies power, the intelligent power storage module actively reduces the output voltage. If the current does not change, the intelligent power management system determines that the external power supply fails, and sends a power failure alarm signal to the background;

[0008] A smart power supply and backup power supply mode selection step, when it is identified that the external power supply is powered off, the user sets the selection to be powered by the smart power storage module or by the backup power supply;

[0009] The step of identifying an incoming call from an external power supply is as follows: when the power is supplied by the intelligent power storage module, the intelligent power management system adjusts the voltage to be lower than the power supply voltage set by the user; if a reverse current appears in the current direction inside the intelligent power storage module, the intelligent power management system determines that the power supply of the external power supply has been restored, and sends a power-off release alarm to the background; when the power is supplied by the backup power supply, if a reverse current appears inside the backup power supply, the intelligent power management system determines that the power supply of the external power supply has been restored, and sends a power-off release alarm to the background;

[0010] The power supply mode selection step is as follows: when the external power supply is restored and the background clears the alarm, the user sets the external power supply, the intelligent power storage module or the backup power supply to be powered.

[0011] In one embodiment of the present invention, all power sources are supplied by the external power supply, the external power supply, the intelligent power storage module and the backup power supply are arranged in parallel circuit relative to the load, and the power supply strategy is set by the user.

[0012] In one embodiment of the present invention, both the intelligent power storage module and the backup power supply module can detect whether the external power supply is powered off and whether the power supply is restored.

[0013] In one embodiment of the present invention, when the external power supply in the external power-off identification step supplies power, the backup power supply is in a floating charge state; when the external power supply loses power, the backup power supply receives a large reverse current, and the intelligent power management system determines that the external power supply has lost power.

[0014] In one embodiment of the present invention, in the external power-off identification step, when the external power supply is used for power supply, the intelligent power storage module is in a charging state; when the external power supply fails, the intelligent power storage module will be discharged, at which time the charging current of the intelligent power storage module decreases and the power also decreases accordingly.

[0015] In one embodiment of the present invention, when the smart power storage module supplies power in the external power failure identification step, the external power source will select the smart power storage module and the backup power module for charging according to the user's settings.

[0016] In one embodiment of the present invention, in the external power-off identification step, when the intelligent power storage module is supplying power, the intelligent power storage module controls the output voltage within the load power supply voltage range and discharges at a power supply voltage lower than the user-set voltage; if the current direction of the intelligent power storage module does not change, the intelligent power management system determines that the external power supply has a power failure and sends the power-off alarm signal to the background; if the intelligent power management system detects that the intelligent power storage module is low on power, the backup power supply module is enabled to supply power.

[0017] In one embodiment of the present invention, in the external power supply incoming call identification step, when the external power supply is powered off and the intelligent power storage module supplies power, if the intelligent power management system performs voltage reduction processing on the intelligent power storage module, and the intelligent power storage module has a discharge power reduction or reverse current situation, the intelligent power management system determines that the external power supply has been restored, and sends the power-off alarm release signal to the background.

[0018] In one embodiment of the present invention, in the external power supply incoming call identification step, when the external power supply is powered off and the backup power supply module supplies power, if the backup power supply has a reverse current and the bus voltage suddenly increases, the intelligent power management system determines that the external power supply has resumed power supply and sends the power-off alarm release signal to the background.

[0019] The present invention also provides a battery device using the power failure detection and incoming call identification method, comprising: a power management system intelligent power storage module, a backup power module and an external power supply module;

[0020] The intelligent power storage module, the backup power module, and the external power supply module can perform signal interaction with the power management system to execute the power failure detection and incoming call identification method.

[0021] As described above, the method for power failure detection and incoming call identification of the present invention has the following beneficial effects:

[0022] The present invention improves the current system and equipment method of connecting a storage battery (mostly a maintenance-free lead-acid battery) to a host through an uninterruptible power supply (UPS), and converting direct current into commercial power through module circuits such as a host inverter. Through various software and hardware control modes, a connection method in which an external power supply, an intelligent power storage module, and a backup power supply module are connected in parallel is set, and the main and secondary power supplies are not distinguished in power supply and distribution. The power supply and distribution strategy is intelligently switched according to customer needs and seamless connection is achieved; at the same time, the hardware settings of the intelligent power storage module are used to physically detect the external circuit power supply situation within the load operating voltage range by adjusting step-up or step-down discharge. This method improves the detection accuracy through software and hardware monitoring and judgment, can preferentially ensure the normal operation of the load (various electrical equipment), and achieve free switching of power supply equipment; at the same time, the hardware detection can protect the power supply system from safety failures caused by external power supply overload. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It shows a schematic flow chart of a power failure detection and power-on identification method of the present invention.

[0024] Figure 2 It shows a schematic flow chart of a preferred embodiment of a power failure detection and power-on identification method of the present invention.

[0025] Figure 3 It shows a structural diagram of a preferred embodiment of a battery device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. It should also be understood that the terms used in the embodiments of the present invention are for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The test methods without specific conditions noted in the following embodiments are usually carried out under conventional conditions or according to the conditions recommended by each manufacturer.

[0027] Please refer to Figures 1 to 3It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0028] Please refer to Figure 1 and Figure 2 , the present invention provides a method for power-off detection and incoming power identification, including user parameter setting steps, external power-off identification steps, intelligent power supply and backup power supply mode selection steps, external power supply incoming power identification steps, and power supply mode selection steps.

[0029] The present invention is implemented based on a BMS (battery management system) chip, a DC-DC (direct current voltage to direct current voltage) hardware module, an intelligent voltage management system software, and its user background operation interface (system).

[0030] The BMS chip realizes voltage management of the external power supply module, intelligent power storage module and backup power supply module in the present invention through hardware management of the DC-DC converter, including hardware management of voltage, current, temperature change and overload protection.

[0031] The intelligent management system uses the data collected by the BMS chip and, according to the user's power supply and distribution strategy on the background system, specifically realizes whether the external power supply is powered off and whether the power supply is restored by using the method of the present invention.

[0032] The method for power-off detection and incoming power identification of the present invention has a set of user background operation interface and system. Users can set appropriate power supply and distribution schemes and information feedback on the background interface. If the external power supply has a power-off situation or the power supply is restored, it will be displayed on the user interface; at the same time, the interface can display the voltage, current and power consumption of each module in the device. Users can not only set in the parameter setting steps, but also change the setting parameters in real time on the background interface according to the on-site situation.

[0033] In the technical solution provided by the present invention, users can set two power supply and distribution modes and a UPS backup power supply, namely external power supply module power supply, intelligent power storage module power supply and backup power supply module. The present invention specifically includes the following steps:

[0034] First, in the user parameter setting step, the user can configure the power supply mode according to requirements, including selecting the external power supply mode or the intelligent energy storage module power supply mode. In the external power supply mode, the external power supply charges the intelligent energy storage module and the backup power supply module.

[0035] In this step, according to the power supply and distribution requirements, the user can set the configuration information such as the charging and discharging voltages, charging rate of the external power supply, and the power supply time period for using the external power supply on the aforementioned user interface according to the load usage and requirements. The user parameter setting is not limited to the above functions. According to the user's needs, the functions and methods of user parameter setting can be added or improved on the software interface to meet the user's needs to the greatest extent.

[0036] All power supply sources in the present invention come from the external power supply. The external power supply module, the intelligent energy storage module, and the backup power supply are systematically set up in a parallel circuit relative to the load. The specific power supply strategy is set by the user according to the actual situation of the load and the power supply and distribution site, giving the user the greatest degree of freedom. The user can control the load voltage and current distribution, the coordination between the external power supply module and the intelligent energy storage module, as well as the charging time period and power of the external power supply module to the intelligent energy storage module and the backup power supply module.

[0037] The user can choose to supply power to the load through the external power supply mode or the intelligent energy storage module according to time periods such as peak and valley electricity prices. When in the external power supply mode, the intelligent energy storage module and the backup power supply module can be charged so that when the external power supply module loses power or reaches the electricity price peak, the intelligent energy storage module or the backup power supply module supplies power.

[0038] Second, the external power loss identification step. When in the external power supply mode, if the intelligent energy storage module detects a reverse current inside or the backup power supply module receives a reverse current, the intelligent power management system determines that the external power supply has lost power and sends a power loss alarm signal to the background. When the intelligent energy storage module supplies power, the intelligent energy storage module actively reduces the output voltage. If the current does not change, the intelligent power management system determines that the external power supply has lost power and sends a power loss alarm signal to the background.

[0039] In this step, according to the power supply strategy set by the user, the intelligent power management system can divide the state when the external power supply module loses power into the state of being powered by the external power supply module and the state of being powered by the intelligent energy storage module.

[0040] When in the external power supply mode, the intelligent energy storage module will be in the state of being charged by the external power supply. The intelligent power management system will monitor the supply voltage and current of the intelligent energy storage module in real time. Once it detects that the charging voltage of the intelligent energy storage module decreases and its charging power also decreases accordingly, the system will determine that there is an abnormal external power supply. At this time, a reverse current will also occur in the intelligent energy storage module (that is, due to the stop of the external power supply, the intelligent energy storage module discharges to the load); the intelligent power management system will then determine that there is a power failure in the external power supply. The system will switch to the intelligent energy storage module or the backup power supply module for power supply within 10 milliseconds according to the user's settings to ensure uninterrupted power supply to the load. Subsequently, the system will send a signal of external power failure alarm to the user background interface, and the user interface will pop up a message indicating that the external power supply module has a power failure, prompting the user to resolve it and restore power supply as soon as possible.

[0041] When in the external power supply mode, the backup power supply module is also in the floating charge state (i.e., a continuous and long-term constant voltage charging mode). The floating charge voltage is slightly higher than the trickle charge voltage, which is sufficient to compensate for the self-discharge loss of the battery and can quickly restore the battery to a nearly fully charged state after discharge. At this time, the backup power supply is equivalent to a power-consuming resistor. To balance the capacity loss caused by the self-discharge of the backup power supply, a continuous and long-term constant voltage charging of the battery is required.

[0042] If the backup power supply module receives a large reverse current (i.e., if the load is 5kw and the DC supply voltage is 50V, then the reverse current of the backup power supply is approximately 100A), when the intelligent power management system detects abnormal voltage and current of the backup power supply module, the system will consider that there is a power failure in the external power supply and send a signal of external power failure alarm to the user background interface. The user interface will pop up a message indicating that the external power supply module has a power failure, prompting the user to resolve it and restore power supply as soon as possible.

[0043] When the intelligent energy storage module supplies power, the external power supply module and the backup power supply module can be in the floating charge state according to the user's strategy. At this time, the intelligent power management system will perform a voltage reduction operation on the discharge voltage of the intelligent energy storage module at intervals set by the user parameters. The discharge voltage for the voltage reduction operation needs to be within the voltage range of the load power supply, and the system is set slightly lower than the user-set power supply voltage value; if the intelligent power management system detects at this time that the current direction of the intelligent energy storage module has not changed and the supply voltage is at the voltage reduction supply voltage set by the intelligent power management system, the system will determine that there is a power failure in the external power supply circuit and send a signal of external power failure alarm to the user background interface, prompting the user to resolve it and restore power supply as soon as possible to ensure the demand for uninterrupted power supply to the load.

[0044] If the intelligent power management system monitors that the power level of the intelligent energy storage module is low, in order to ensure normal power supply to the load, if the external power supply has not been restored, the system will automatically switch to the backup power supply to ensure uninterrupted power supply to the load. At the same time, the intelligent power management system will feedback the working status of the external power supply module, the intelligent energy storage module and the backup power supply module to the user interface and prompt the user of the low power level of the intelligent energy storage module.

[0045] Third, the power supply mode selection step for the intelligent power supply and the backup power supply. When the external power supply is recognized as powered off, the user sets to select power supply by the intelligent energy storage module or by the backup power supply.

[0046] In this step, when the intelligent power management system triggers an alarm, it is necessary to allocate power supply to the load by the intelligent energy storage module or the backup power supply module according to the user's power supply and distribution strategy settings. Regardless of the abnormal power level status of the intelligent energy storage module or the backup power supply module monitored by the intelligent power management system, the intelligent power management system will switch to other power supply modes according to the user-set parameters.

[0047] Fourth, the external power supply power-on recognition step. When powered by the intelligent energy storage module, the intelligent power management system adjusts the voltage to be lower than the user-set power supply voltage. If a reverse current appears in the current method inside the intelligent energy storage module, the intelligent power management system determines that the external power supply has been restored and sends a power-off alarm cancellation to the background. When powered by the backup power supply, if a reverse current appears inside the backup power supply, the intelligent power management system determines that the external power supply has been restored and sends a power-off alarm cancellation to the background.

[0048] In this step, at this time the external power supply module is in a powered-off state, and according to the user's power supply strategy, the current power supply to the load is divided into power supply by the intelligent energy storage module and power supply by the backup power supply module.

[0049] When powered by the intelligent energy storage module, the intelligent power management system will perform a step-down operation on the discharge voltage of the intelligent energy storage module. Its discharge voltage is within the load power supply voltage range and is set by the intelligent power management system to be slightly lower than the user-set power supply voltage value. If at this time the intelligent power management system detects that the current direction of the intelligent energy storage module appears a reverse current, and at the same time detects that the output current of the intelligent energy storage module decreases and the external voltage increases, the intelligent power management system determines that the external power supply has been restored, and after continuously monitoring the voltage and current for one minute to be stable, it sends a signal of the external power supply power-off alarm to the user background interface.

[0050] If the intelligent power management system monitors that the power supply of the intelligent energy storage module is low, it will automatically switch to the backup power supply to ensure uninterrupted power supply to the load.

[0051] When the backup power module is supplying power, when the intelligent power management system detects that the backup power module has a large reverse current and the bus voltage suddenly increases, it can determine that the external power supply has resumed supplying power, and after continuously monitoring the voltage and current for one minute to stabilize, it will send an external power failure alarm signal to the user background interface.

[0052] If the external power supply has not been restored, the intelligent power management system will automatically switch to the intelligent power storage module to supply power when the backup power module is low on power to the load, to ensure uninterrupted power supply to the load.

[0053] Fifth, the power supply mode selection step: when the external power supply is restored and the background alarm is released, the user sets the power supply to be from the external power supply, the intelligent power storage module or the backup power supply.

[0054] In this step, when the external power supply is restored, the intelligent power management system will monitor and observe and determine that the external power supply has been restored, and will send an alarm cancellation message to the user background interface; at this time, the intelligent power management system will determine whether to supply power by an external power module, an intelligent power storage module or a backup power module based on the user's power supply and distribution strategy, thereby realizing the user's right to independently decide the power supply and distribution mode and achieving a greater degree of user freedom.

[0055] The working principle of the present invention is as follows:

[0056] The present invention is mainly intended to solve the problem that the load cannot work or works intermittently for a short time due to power failure of the external power supply, which causes unnecessary losses to the customer.

[0057] The DC-DC principle hardware can detect the voltage and current of the intelligent power storage module and the backup power module. After the obtained signal is collected by the intelligent power management system, it can be used to determine the usage of the intelligent power storage module and the backup power module. Under normal power supply voltage, if the voltage of the intelligent power storage module or the backup power module decreases, and the discharge current decreases at the same time, it means that the electromotive force in the module is reduced and the power supply is insufficient.

[0058] When the intelligent power storage module supplies power, according to the user-set parameters, the intelligent power management system controls the intelligent power storage module to perform voltage reduction and discharge operations regularly (the voltage is within the load operating voltage range) within the user-set range, and monitors the power supply status of the external power supply in real time; if the external power supply fails, the intelligent power storage module continues to supply power to ensure uninterrupted power supply. Because according to the current flow direction of the electromotive force, the current with high voltage will be output to the module with low voltage, so if the intelligent power storage module detects that the voltage is lower than the supply voltage, the external power supply abnormality can be detected by the intelligent power management system and can be displayed through the user interface.

[0059] When the intelligent power management system controls the intelligent energy storage module to perform step-down discharge operation (within the load operating voltage range), the load supply voltage will be lower than the user-set voltage. If reverse current occurs in the intelligent energy storage module, it will be detected by the intelligent power management system, and it will be judged that the external power supply has returned to normal (i.e., power failure recovery). At this time, the intelligent power management system will send a power-off alarm cancellation to the user background.

[0060] Meanwhile, if a large reverse current occurs in the backup power module, it will be detected by the intelligent power management system, and it will be judged that the external power supply has returned to normal (i.e., power failure recovery). At this time, the intelligent power management system will send a power-off alarm cancellation to the user background.

[0061] If the load is powered by the external power module, the external power supply module can not only charge the intelligent energy storage module and the backup power module, but also discharge and supply energy to the load.

[0062] At this time, if the external power module loses power, whether the intelligent power management system monitors a large reverse current when the external power supplies the intelligent energy storage module or the backup power module for charging, it can be judged that the external power supply is abnormal. At the same time, the intelligent power management system can allocate the intelligent energy storage module or the backup power module to discharge according to the customer's power supply strategy.

[0063] Subsequently, if the intelligent power management system monitors that the output current of the intelligent energy storage module decreases and detects that the external voltage increases, the intelligent power management system can judge that the external power supply has been restored; at this time, the intelligent power management system will control the intelligent energy storage module to perform passive power reduction operation and continuously monitor for about one minute. If the power supply does not have any abnormalities, the intelligent power management system can determine that the DC system of the external power module has resumed power supply, and according to the user parameter settings, the intelligent power management system controls the external power module, the intelligent energy storage module or the backup power module to perform load power supply operation.

[0064] When the external power module resumes power supply, the intelligent power management system can allocate according to the user parameter settings. It can not only supply power to the load, but also charge the intelligent energy storage module and the backup power module; to ensure the supply of load power demand at all times and solve the problem that the load cannot work properly or works intermittently for a short time.

[0065] The present invention monitors the voltage and current parameters of the intelligent energy storage module and the backup power module. The principle is simple and the working condition logic is comprehensive and clear. By means of boost and step-down operations, it is possible to monitor whether the external power supply has lost power and whether it has resumed power supply, so that the judgment accuracy is relatively high; and through the parallel circuit mode of the external power module, the intelligent energy storage module and the backup power module, it is ensured that the load can work without power interruption.

[0066] The hardware based on DC-DC enables the present invention not to be limited to a DC power supply platform and have strong adaptability, so it can be widely applied.

[0067] Accordingly, the present invention also provides a battery device adopting the method for power-off detection and power-on identification as described above. The battery device may be a battery pack, including an intelligent power storage module, a backup power supply module, an external power supply module, and a BMS (battery management system).

[0068] The customer power supply strategy can be set through the BMS system, and then the BMS system is integrated on the power management module on the circuit board. At this time, the external power supply module, the intelligent power storage module, and the backup power supply module are on the same bus (connected in a parallel circuit), and the power supply strategy is set by the customer. Since all power sources are external power supplies, both the intelligent power supply and the backup power supply can be used as tools for detecting the power-off of the external circuit, and finally the functions of external power-off detection and power-on identification are realized to prevent circuit overload.

[0069] This battery pack can also be used as a subsystem to form a battery module or other cluster configurations through the BMS system, so as to realize large-scale power supply strategies and power background management control modes.

[0070] In summary, the present invention provides a method for power-off detection and power-on identification and a battery device using this method, which can be applied to lithium batteries and various backup power hybrid energy storage systems (DC systems), can accurately detect and identify the external power supply status, and freely switch the power supply path, ensuring that the load (various electrical devices) works uninterruptedly. Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0071] The above embodiments are only illustrative of the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for power failure detection and incoming call identification, It is characterized in that The method comprises: User parameter setting step, the user can configure the power supply mode according to the needs, including selecting the external power supply mode or the intelligent power storage module power supply mode, in which the external power supply mode charges the intelligent power storage module and the backup power supply module; External power failure identification step: when the external power supply mode is on, if the intelligent power storage module detects that a reverse current occurs internally or the backup power module receives a reverse current, the intelligent power management system determines that the external power supply fails, and sends a power failure alarm signal to the background; when the intelligent power storage module supplies power, the intelligent power storage module actively reduces the output voltage. If the current does not change, the intelligent power management system determines that the external power supply fails, and sends a power failure alarm signal to the background; The step of selecting the power supply mode of the intelligent power supply and the backup power supply, when it is identified that the external power supply is powered off, the user sets the selection to be powered by the intelligent power storage module or by the backup power supply; The step of identifying an incoming call from an external power supply, when the power is supplied by the intelligent power storage module, the intelligent power management system adjusts the voltage to be lower than the power supply voltage set by the user, and if a reverse current appears in the current direction inside the intelligent power storage module, the intelligent power management system determines that the power supply of the external power supply is restored, and sends a power-off alarm release signal to the background; when the power is supplied by the backup power supply, if a reverse current appears inside the backup power supply, the intelligent power management system determines that the power supply of the external power supply is restored, and sends a power-off alarm release signal to the background; The power supply mode selection step is as follows: when the external power supply is restored and the background clears the alarm, the user sets the external power supply, the intelligent power storage module or the backup power supply to be powered.

2. A method for power failure detection and incoming call identification according to claim 1, Features: All power supply sources are supplied by the external power supply. The external power supply, the intelligent power storage module and the backup power supply are arranged in parallel circuit relative to the load, and the power supply strategy is set by the user.

3. A method for power failure detection and incoming call identification according to claim 1, Features: The intelligent power storage module and the backup power supply module can both detect whether the external power supply is powered off and whether the power supply is restored.

4. A method for power failure detection and incoming call identification according to any one of claims 1 to 3, Features: When the external power supply in the external power-off identification step supplies power, the backup power supply is in a floating charge state; when the external power supply loses power, the backup power supply receives a large reverse current, and the intelligent power management system determines that the external power supply loses power.

5. A method for power failure detection and incoming call identification according to any one of claims 1 to 3, Features: In the external power-off identification step, when the external power supply is used for power supply, the intelligent power storage module is in a charging state; when the external power supply fails, the intelligent power storage module will be discharged, at which time the charging current of the intelligent power storage module decreases and the power also decreases accordingly.

6. A method for power failure detection and incoming call identification according to claim 1, Features: In the external power failure identification step, when the intelligent power storage module is supplying power, the external power supply will charge the intelligent power storage module and the backup power supply module according to the user's setting.

7. A method for power failure detection and incoming call identification according to claim 1 or 6, Features: In the external power-off identification step, when the intelligent power storage module is supplying power, the intelligent power storage module controls the output voltage within the load power supply voltage range and discharges at a power supply voltage lower than the user-set voltage; if the current direction of the intelligent power storage module does not change, the intelligent power management system determines that the external power supply has a power failure and sends the power-off alarm signal to the background; if the intelligent power management system detects that the intelligent power storage module is low on power, the backup power supply module is enabled to supply power.

8. A method for power failure detection and incoming call identification according to claim 1, Features: In the external power supply call identification step, when the external power supply is cut off and the intelligent power storage module is supplying power, if the intelligent power management system reduces the voltage of the intelligent power storage module, and the intelligent power storage module experiences a discharge power reduction or reverse current situation, the intelligent power management system determines that the external power supply has resumed power supply and sends the power-off release alarm signal to the background.

9. A method for power failure detection and incoming call identification according to claim 1, Features: In the external power supply call identification step, when the external power supply is cut off and powered by the backup power supply module, if the backup power supply has a reverse current and the bus voltage suddenly increases, the intelligent power management system determines that the external power supply has resumed power supply and sends the power-off alarm release signal to the background.

10. A battery device, using the method for power failure detection and incoming call identification according to any one of claims 1 to 9, It is characterized in that The battery device includes a power management system, an intelligent power storage module, a backup power module and an external power supply module; The intelligent power storage module, the backup power module, and the external power supply module can perform signal interaction with the power management system to execute the power failure detection and incoming call identification method.

Images