A control method and device of a respiratory equipment, a respiratory equipment and a storage medium

Abstract

The application discloses a control method and device of a breathing apparatus, the breathing apparatus, and a storage medium. The breathing apparatus comprises a power supply circuit, the power supply circuit comprises a power adapter and a battery, the power adapter is used for connecting commercial power and is electrically connected with a load of the breathing apparatus and the battery, and the battery is electrically connected with the load. By respectively controlling the power supply states of the power adapter and the battery according to breathing phases and the charging state of the battery by the power adapter, the switching time of the power supply mode is aligned with the switching time of the breathing phases, the frequent switching of the power supply mode caused by the fluctuation of the load power near a threshold in the fixed threshold control mode is avoided, and thus the switching times of the charging and discharging states of the battery are reduced.

Description

Technical Field

[0001] This invention belongs to the field of respiratory equipment, and specifically relates to a control method, device, respiratory equipment, and storage medium for a respiratory device. Background Technology

[0002] High-flow humidified oxygen therapy devices and ventilators are widely used in intensive care, emergency care and respiratory support treatment. They have high load power and extremely high requirements for power supply stability and continuity. Therefore, these devices usually use dual power supply from a power adapter and a battery.

[0003] In dual-power supply systems, a fixed threshold control method is typically used, which switches the power supply ratio between the mains and the battery based on whether the load power exceeds a preset threshold. However, when the load power fluctuates around the threshold, the power supply mode switches frequently as the power crosses the threshold, causing the battery to frequently switch between charging and discharging states. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide a control method, apparatus, breathing device, and storage medium for a breathing device that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of the present invention provide a control method for a respiratory device, the respiratory device including a power supply circuit, the power supply circuit including a power adapter and a battery, the power adapter being used to connect to mains power and electrically connected to a load of the respiratory device and the battery; the battery being electrically connected to the load; the control method including: Determine the respiratory phase of the user of the breathing device at the current moment; the respiratory phase includes one of the inspiratory phase, expiratory phase, and breath-holding phase; Obtain the battery state parameters of the battery at the current moment; When the breathing phase is the inspiratory phase, the power adapter is controlled to supply power to the load according to the rated power value, the battery is controlled to supply power to the load according to the preset power value, and the power adapter is controlled not to charge the battery; When the breathing phase is the exhalation phase, a first mains power supply limit and a first charging power limit are determined according to the battery state parameters. The power adapter is controlled to supply power to the load according to the first mains power supply limit and to charge the battery according to the first charging power limit. When the breathing phase is the breath-holding phase, a second AC power supply limit and a second charging power limit are determined based on the battery state parameters. The power adapter is controlled to supply power to the load according to the second AC power supply limit and to charge the battery according to the second charging power limit. The first AC power supply limit is greater than the second AC power supply limit.

[0006] Optionally, the battery status parameters include the estimated backup power duration; determining the first charging power limit based on the battery status parameters includes: Based on the estimated backup power duration, determine the charging capacity coefficient; The first charging power limit is set as the product of the rated charging power and the charging power coefficient; And / or, Determining the second charging power upper limit based on the battery state parameters includes: Based on the estimated backup power duration, determine the charging capacity coefficient; The second charging power limit is set as the product of the rated charging power and the charging power coefficient.

[0007] Optionally, determining the charging capacity coefficient based on the estimated backup power duration includes: If the estimated backup power duration remains less than the first preset duration, the charging power coefficient is determined to be a first value. If the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration, the charging power coefficient is determined to be the second value. If the estimated backup power duration is greater than or equal to the second preset duration, the charging power coefficient is determined to be a third value; wherein the first preset duration is less than the second preset duration, the first value is greater than the second value, and the second value is greater than the third value.

[0008] Optionally, determining the upper limit of the first mains power supply based on the battery state parameters includes: The upper limit of the first mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the first mains power supply. And / or, The step of determining the upper limit of the second mains power supply based on the battery state parameters includes: The upper limit of the second mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the second mains power supply.

[0009] Optionally, the method further includes: When the breathing phase is the exhalation phase, the upper limit of the first battery power supply is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the first battery power supply. When the breathing phase is the breath-holding phase, the upper limit of the second battery power supply is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the second battery power supply; the upper limit of the first battery power supply is less than the upper limit of the second battery power supply.

[0010] Optionally, determining the upper limit of the first battery power supply based on the battery state parameters includes: The upper limit of the power supply of the first battery is determined according to the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the first battery. And / or, Determining the upper limit of the second battery's power supply based on the battery state parameters includes: The upper limit of the power supply of the second battery is determined based on the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the second battery.

[0011] Optionally, determining the charging capacity coefficient based on the estimated backup power duration further includes: When the estimated backup power duration changes from less than the first preset duration to greater than or equal to the first preset duration, the charging power coefficient remains at the current value until the estimated backup power duration continues to be greater than or equal to the first preset duration and reaches the preset duration, at which point the charging power coefficient is switched from the first value to the second value.

[0012] Optionally, the method further includes: In the event of a mains power outage, the operating level is determined based on the battery status parameters; the operating level includes multiple levels, and different operating levels correspond to different operating parameters for different loads of the respiratory device; Based on the operating level, the load of the respiratory equipment is controlled to operate according to the corresponding operating parameters.

[0013] Optionally, the load includes a fan, a humidifying heating plate, and heating pipes; as the operating level decreases, the operating parameters of the humidifying heating plate and / or the heating pipes are reduced before the operating parameters of the fan, and the fan maintains a preset minimum effective ventilation when the operating level reaches the lowest level.

[0014] Optionally, the method further includes: When the mains power is restored from the interruption state, the fan is controlled to gradually increase to the user-set flow rate value; And / or, control the humidification heating plate to gradually increase to the user-set temperature value; And / or, control the heating pipeline to resume heating after a preset delay time.

[0015] Secondly, embodiments of the present invention provide a control device for a respiratory device, the respiratory device including a power supply circuit, the power supply circuit including a power adapter and a battery, the power adapter being used to connect to mains power and electrically connected to the load of the respiratory device and the battery; the battery being electrically connected to the load; the control device including: The breathing phase determination module is used to determine the breathing phase of the user of the breathing device at the current moment; the breathing phase includes one of the inspiratory phase, expiratory phase and breath-holding phase; A battery status parameter acquisition module is used to acquire the battery status parameters of the battery at the current moment. The inspiratory phase control module is used to control the power adapter to supply power to the load according to the rated power value, control the battery to supply power to the load according to the preset power value, and control the power adapter not to charge the battery when the breathing phase is the inspiratory phase. The expiratory phase control module is used to determine a first mains power supply limit and a first charging power limit based on the battery state parameters when the breathing phase is the expiratory phase, control the power adapter to supply power to the load according to the first mains power supply limit, and control the power adapter to charge the battery according to the first charging power limit; The breath-holding phase control module is used to determine a second upper limit of AC power supply and a second upper limit of charging power based on the battery state parameters when the breathing phase is the breath-holding phase, control the power adapter to supply power to the load according to the second upper limit of AC power supply, and control the power adapter to charge the battery according to the second upper limit of charging power; the first upper limit of AC power supply is greater than the second upper limit of AC power supply.

[0016] Optionally, the battery status parameters include estimated backup power duration; the exhalation phase control module includes: The first charging power coefficient submodule is used to determine the charging power coefficient based on the estimated backup power duration. The first charging power upper limit determination submodule is used to set the first charging power upper limit as the product of the rated charging power and the charging strength coefficient; And / or, The gas phase control module includes: The second charging power coefficient submodule is used to determine the charging power coefficient based on the estimated backup power duration. The second charging power upper limit determination submodule is used to set the second charging power upper limit as the product of the rated charging power and the charging intensity coefficient.

[0017] Optionally, the first charging force coefficient submodule includes: The first value determination unit is used to determine the charging power coefficient as a first value when the estimated backup power duration is kept less than a first preset duration. The second value determination unit is used to determine the charging power coefficient as a second value when the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration. The third value determination unit is used to determine the charging power coefficient as a third value when the estimated backup power duration is greater than or equal to the second preset duration; wherein the first preset duration is less than the second preset duration, the first value is greater than the second value, and the second value is greater than the third value.

[0018] Optionally, the expiratory phase control module includes: The first AC power supply power upper limit determination submodule is used to determine the first AC power supply power upper limit based on the charging intensity coefficient; the larger the charging intensity coefficient, the smaller the first AC power supply power upper limit. And / or, The gas phase control module includes: The second AC power supply upper limit determination submodule is used to determine the second AC power supply upper limit based on the charging intensity coefficient; the larger the charging intensity coefficient, the smaller the second AC power supply upper limit.

[0019] Optionally, the device further includes: The first battery power supply limit determination module is used to determine the first battery power supply limit based on the battery state parameters when the breathing phase is the expiratory phase, and control the battery to supply power to the load according to the first battery power supply limit. The second battery power supply upper limit determination module is used to determine the second battery power supply upper limit based on the battery state parameters when the breathing phase is the breath-holding phase, and control the battery to supply power to the load according to the second battery power supply upper limit; the first battery power supply upper limit is less than the second battery power supply upper limit.

[0020] Optionally, the first battery power supply upper limit determination module includes: The first battery power supply limit submodule is used to determine the first battery power supply limit based on the charging strength coefficient; the larger the charging strength coefficient, the larger the first battery power supply limit. And / or, the second battery power supply upper limit determination module includes: The second battery power supply limit determination submodule is used to determine the second battery power supply limit based on the charging strength coefficient; the larger the charging strength coefficient, the larger the second battery power supply limit.

[0021] Optionally, the device further includes: The switching module is used to maintain the charging intensity coefficient at its current value when the estimated backup power duration changes from less than the first preset duration to greater than or equal to the first preset duration, until the estimated backup power duration continues to be greater than or equal to the first preset duration and reaches a preset duration, and then switches the charging intensity coefficient from the first value to the second value.

[0022] Optionally, the device further includes: An operation level determination module is used to determine the operation level based on the battery status parameters in the event of a mains power outage; the operation level includes multiple levels, and different operation levels correspond to different operation parameters for different loads of the respiratory device; The load control module is used to control the load of the respiratory device to operate according to the corresponding operating parameters based on the operating level.

[0023] Optionally, the load includes a fan, a humidifying heating plate, and heating pipes; as the operating level decreases, the operating parameters of the humidifying heating plate and / or the heating pipes are reduced before the operating parameters of the fan, and the fan maintains a preset minimum effective ventilation when the operating level reaches the lowest level.

[0024] Optionally, the device further includes: The fan control module is used to control the fan to gradually increase the flow rate to the user-set value when the mains power is restored from the interruption state; And / or, a humidification heating plate control module, used to control the humidification heating plate to gradually increase to the user-set temperature value; And / or, a heating pipeline control module, used to control the heating pipeline to resume heating after a preset delay time.

[0025] Thirdly, embodiments of the present invention provide a breathing device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0026] Fourthly, embodiments of the present invention provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0027] The control method for a respiratory device according to an embodiment of the present invention includes a power supply circuit comprising a power adapter and a battery. The power adapter is used to connect to mains power and is electrically connected to the load and battery of the respiratory device. The battery is electrically connected to the load. First, the respiratory phase of the user at the current moment needs to be determined; the respiratory phase includes one of inspiratory phase, expiratory phase, and breath-holding phase. Then, the battery state parameters at the current moment are obtained. Finally, when the respiratory phase is inspiratory phase, the power adapter is controlled to supply power to the load according to its rated power value, the battery is controlled to supply power to the load according to a preset power value, and the power adapter is controlled not to supply power to the load. Battery charging: When the breathing phase is exhalation, a first upper limit for mains power supply and a first upper limit for charging power are determined based on battery state parameters. The power adapter is controlled to supply power to the load according to the first upper limit for mains power supply and to charge the battery according to the first upper limit for charging power. When the breathing phase is breath-holding, a second upper limit for mains power supply and a second upper limit for charging power are determined based on battery state parameters. The power adapter is controlled to supply power to the load according to the second upper limit for mains power supply and to charge the battery according to the second upper limit for charging power. The first upper limit for mains power supply is greater than the second upper limit for mains power supply. This embodiment of the application controls the power supply state of the power adapter and the battery, as well as the charging state of the battery by the power adapter, according to the breathing phase. This aligns the switching time of the power supply mode with the switching time of the breathing phase, avoiding frequent switching of the power supply mode caused by the fluctuation of the load power near the threshold under the fixed threshold control method, thereby reducing the number of battery charging and discharging state switching. Attached Figure Description

[0028] Figure 1 This is a flowchart of the steps of a control method for a breathing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a power supply circuit according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a control device for a respiratory device according to an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] High-flow humidified oxygen therapy devices and ventilators are widely used in intensive care, emergency care, and respiratory support treatment. Their main function is to provide a stable airflow through a high-speed fan, combined with a humidification heating plate and heating tubing to heat and humidify the gas, ensuring patient comfort and therapeutic efficacy. A typical load for this type of equipment includes a high-speed fan (approximately 80–150W), a humidification heating plate (approximately 40–80W), and heating tubing (approximately 10–30W), with a total peak power of 180–260W, placing extremely high demands on the stability and continuity of the power supply system.

[0031] Currently, such devices typically employ a dual-power supply system, using both a power adapter and a battery. When powered by the power adapter, the battery is simultaneously charged; when mains power is interrupted, the system switches to battery power. This dual-power supply system generally uses a fixed threshold control strategy, switching the power supply ratio between mains and battery based on whether the load power exceeds a preset threshold. However, this control method has the following problems: because the load power of the respiratory device fluctuates periodically, with a significant increase in inspiratory power and relatively lower power in expiratory and breath-holding phases, the fluctuation range within a single cycle can reach 40–60W. Under the fixed threshold control method, when the load power fluctuates near the threshold, it repeatedly crosses the threshold, leading to frequent switching of the power supply mode and causing the battery to frequently switch between charging and discharging states.

[0032] One of the core concepts of this invention is that by controlling the power supply state of the power adapter and the battery, as well as the charging state of the battery by the power adapter, according to the breathing phase, the switching time of the power supply mode is aligned with the switching time of the breathing phase. This avoids the frequent switching of the power supply mode caused by the fluctuation of the load power near the threshold under the fixed threshold control method, thereby reducing the number of battery charging and discharging state switching.

[0033] Reference Figure 1 The diagram illustrates a flowchart of the control method for a respiratory device according to an embodiment of the present invention. The respiratory device includes a power supply circuit, which includes a power adapter and a battery. The power adapter is used to connect to mains power and is electrically connected to the load of the respiratory device and the battery. The battery is electrically connected to the load. Specifically, the method may include the following steps: Step 101: Determine the respiratory phase of the user of the breathing device at the current moment; the respiratory phase includes one of the inspiratory phase, expiratory phase, and breath-holding phase.

[0034] The respiratory device also includes a controller that can determine the user's respiratory phase at the current moment based on the airway flow sensor signal. The airway flow sensor can be installed in the breathing tubing, and its output airway flow sensor signal contains instantaneous gas flow rate and direction information. The controller can be electrically connected to the airway flow sensor to acquire the airway flow sensor signal. For example, with a sampling period of 10ms, the controller samples the airway flow sensor signal, determines the airflow direction through zero-crossing detection, and combines this with a minute ventilation threshold to output a real-time three-state respiratory phase signal Phase(t) ∈ {INH, EXH, HOLD}, where INH represents the inspiratory phase, EXH represents the expiratory phase, and HOLD represents the breath-holding phase.

[0035] For example, the breathing phase can be determined according to the following judgment logic: when the minute ventilation is greater than 110% of the set flow rate and the airflow direction is towards the user, the current breathing phase is determined to be the inspiratory phase. At this time, the user is in the active inhalation or equipment-supplied air stage, and the load power demand is high. When the minute ventilation is less than 90% of the set flow rate and the airflow direction is away from the user, the current breathing phase is determined to be the expiratory phase. At this time, the user is in the exhalation stage, and the load power demand is low. When the minute ventilation is within ±5% of the set flow rate threshold range and the duration of this state is greater than 300ms, the current breathing phase is determined to be the breath-hold phase. At this time, the airflow approaches zero, the user is in a short pause at the end of inhalation or exhalation, the fan load is the lowest, and the load power demand is lower than that of the expiratory phase. The breathing phase signal Phase(t) serves as the core trigger variable for global power scheduling, used to trigger the switching of power supply strategies for subsequent phases.

[0036] Step 102: Obtain the battery state parameters at the current moment.

[0037] Battery state parameters are a set of physical quantities that characterize the current energy state of a battery. For example, battery state parameters can be the current remaining charge of the battery and the duration of power supply that can be maintained under the current load power.

[0038] Step 103: When the breathing phase is the inspiratory phase, control the power adapter to supply power to the load according to the rated power value, control the battery to supply power to the load according to the preset power value, and control the power adapter not to charge the battery.

[0039] Reference Figure 2This diagram illustrates a power supply circuit according to an embodiment of the present invention. The power supply circuit includes a power adapter and a battery. The power adapter is used to connect to AC mains power and is electrically connected to the load of the breathing device and the battery. The battery is electrically connected to the load. The power supply circuit also includes: a first switching transistor, i.e., a charging control MOSFET, connected in series between the power adapter and the battery, used to control the charging path of the battery module; a second switching transistor, i.e., a battery power supply control MOSFET, connected in series between the battery and the DC power bus, used to control the power supply path of the battery; a third switching transistor, i.e., an AC mains power supply control MOSFET, connected in series between the power adapter and the DC power bus, used to control the power supply path of the power adapter; a load, connected to the DC power bus, used to operate according to the power supply of the DC power bus; and a controller, which may be a microcontroller unit (MCU), connected to the third switching transistor and connected to the first and second switching transistors respectively through a battery management system (BMS). The controller is used to control the operating states of the first, second, and third switching transistors to switch the operating mode of the power supply circuit. For example, the first switch can be turned off, the second switch can be turned on, and the third switch can be turned on, so that the power adapter and the battery jointly supply power to the load. Alternatively, the first switch can be turned on, the second switch can be turned off, and the third switch can be turned on, so that the power adapter supplies power to the load and charges the battery, while the battery does not supply power to the load. Or, the first switch can be turned off, the second switch can be turned on, and the third switch can be turned off, so that when the power adapter is disconnected from the mains power, the battery supplies power to the load.

[0040] The first anti-backflow module is connected in series between the power adapter and the DC power bus. This module includes an ideal diode controller (ORING controller) to prevent voltage from the DC power bus side from flowing back into the power adapter. The second anti-backflow module is connected in series between the battery and the DC power bus. This module also includes an ideal diode controller (ORING controller) to prevent voltage from the DC power bus side from flowing back into the battery. The current sampling module connects one end to the power adapter and the other end to a pin of the main control MCU's first analog-to-digital converter (ADC1). This module collects the current output from the power adapter to the DC power bus and outputs the sampled signal to the main control MCU's first ADC. The current sampling battery module connects one end to the battery and the other end to a pin of the main control MCU's second analog-to-digital converter (ADC2). This module collects the current output from the battery to the DC power bus and outputs the sampled signal to the main control MCU's second ADC. The main control MCU can directly control the conduction state of the third switching transistor (mains power control MOSFET). The main control MCU can also interact with the BMS to control the conduction state of the first switching transistor (charging control MOSFET) and the second switching transistor (battery power supply control MOSFET). For example, the main control MCU interacts with the BMS via a communication bus, receiving battery parameters such as battery voltage, current, and temperature reported by the BMS, and sending control commands to the BMS based on the battery status. The BMS, according to the control commands, controls the conduction or cutoff of the first and second switching transistors to allow or disable the battery to supply power to the DC power bus, and to allow or disable the power adapter to charge the battery. The intake phase is the stage with the highest load power demand (maximum fan power). At this time, the power adapter and battery jointly supply power to the load to meet the peak power demand of the intake phase. Specifically, the power adapter is controlled to output according to its rated power value, i.e., the power adapter is at full capacity, and the battery is controlled to participate in compensation power supply according to a preset power value to ensure the peak power demand of the intake phase. Simultaneously, the power adapter is prohibited from charging the battery to avoid the charging power and load power from overlapping and causing the bus power to exceed the limit. The preset power value refers to the upper limit of the output power of the battery when it participates in power supply during the intake phase. For example, the preset power value can be 30% of the rated discharge power value of the battery.

[0041] Step 104: When the breathing phase is the exhalation phase, determine the first AC power supply limit and the first charging power limit based on the battery state parameters, control the power adapter to supply power to the load according to the first AC power supply limit, and control the power adapter to charge the battery according to the first charging power limit.

[0042] The exhalation phase is a period of lower load power demand, falling between the inhalation and breath-hold phases. During this time, the power adapter supplies power to the load according to the upper limit of the first AC power supply, while the battery can be controlled not to supply power to the load. Simultaneously, taking advantage of the lower power demand window during the exhalation phase, the power adapter is controlled to charge the battery according to the upper limit of the first charging power supply to restore battery charge. The upper limit of the first AC power supply and the upper limit of the first charging power supply are determined in real time by the controller based on battery status parameters. For example, the upper limit of the first AC power supply can be 80% of the rated power value.

[0043] Step 105: When the breathing phase is the breath-holding phase, determine the upper limit of the second mains power supply and the upper limit of the second charging power according to the battery state parameters, control the power adapter to supply power to the load according to the upper limit of the second mains power supply, and control the power adapter to charge the battery according to the upper limit of the second charging power; the upper limit of the first mains power supply is greater than the upper limit of the second mains power supply.

[0044] The breath-hold phase represents the period of lowest load power demand. During this time, the power adapter supplies power to the load according to the second maximum power limit, while the battery can be controlled not to supply power to the load. The second maximum power limit of the power adapter during the breath-hold phase is lower than the first maximum power limit during the exhalation phase. This allows for more power margin to be reserved for battery charging during the window of lowest power demand, achieving more efficient charging. The second maximum AC power supply and the second maximum charging power are determined in real time by the controller based on battery status parameters. For example, the second maximum AC power supply can be 60% of the rated power value.

[0045] In this embodiment of the invention, the power distribution during the inspiratory phase adopts a fixed value that is not adjusted according to changes in battery status. During the inspiratory phase, the power adapter is controlled to output at full capacity according to its rated power value, the battery is controlled to supply power to the load according to a preset power value, and the charging power is controlled to be zero. These three commands remain unchanged regardless of the battery charge status. This fixed distribution principle is used to ensure that the user always receives sufficient therapeutic power during the inspiratory phase, thus ensuring the safety and effectiveness of respiratory therapy.

[0046] By utilizing the exhalation and breath-hold phases as battery charging windows, the battery can be controlled to not supply power to the load during these phases, instead supplying power to the load via the power adapter while simultaneously charging the battery. Alternatively, the battery can be controlled to supply power to the load as needed. The load power demand during breath-hold is lower than that during exhalation, therefore the upper limit of charging power during breath-hold can be higher than that during exhalation. This method completes battery recharging within the low-power window, avoiding charging during peak inhalation periods and preventing the bus power from exceeding limits due to the superposition of charging power and load power. Furthermore, the switching time of the power supply mode is aligned with the switching time of the breathing phase, avoiding frequent switching of the power supply mode caused by load power fluctuations near the threshold, thus reducing the number of battery charge / discharge state switching operations.

[0047] In this embodiment of the invention, the battery state parameters include the estimated backup power duration; step 104 may include the following sub-steps: Sub-step S11: Determine the charging capacity coefficient based on the estimated backup power duration.

[0048] Sub-step S12: Set the first charging power upper limit to the product of the rated charging power and the charging power coefficient; And / or, step 105 may include the following sub-steps: Sub-step S21: Determine the charging intensity coefficient based on the estimated backup power duration.

[0049] Sub-step S22: Set the second charging power upper limit to the product of the rated charging power and the charging strength coefficient.

[0050] The estimated backup power duration T_remain(t) represents the estimated time during which the battery can continuously supply power to the respiratory device given its current remaining charge and current load power. The controller can obtain the current remaining battery charge and the current average load power, and calculate the estimated backup power duration based on the ratio of the current remaining charge to the current average load power. The estimated backup power duration decreases as the remaining battery charge decreases and as the load power increases, and is dynamically updated as battery usage time progresses.

[0051] The controller determines the charging power coefficient α based on the estimated backup power duration of the battery. For example, the charging power coefficient α can be a dimensionless parameter characterizing the current urgency of the battery's charge level, used to scale and adjust the upper limit of charging power during the exhalation and breath-holding phases. The larger α is, the more urgent the battery charge (the shorter the estimated backup power duration), requiring higher charging power; the smaller α is, the more abundant the battery charge (the longer the estimated backup power duration), allowing for a more appropriate reduction in charging power.

[0052] For example, the value of α ranges from 0.6 to 1.0, and its value is negatively correlated with the estimated backup power duration: the shorter the estimated backup power duration, the larger the value of α; the longer the estimated backup power duration, the smaller the value of α.

[0053] The first and second charging power limits are determined as follows: the controller determines the charging power coefficient α based on the estimated backup power duration, multiplies the rated charging power by the charging power coefficient α, and uses the product as the corresponding charging power limit.

[0054] By determining the charging power coefficient α based on the estimated backup power duration and setting the upper limit of charging power as the product of the rated charging power and α, adaptive adjustment of charging power based on the remaining battery charge is achieved. When the remaining battery charge is low (estimated backup power duration is short), α is set to a larger value, resulting in a higher charging power and rapid replenishment of battery charge. When the remaining battery charge is relatively sufficient (estimated backup power duration is long), α is set to a smaller value, resulting in a slightly lower charging power to avoid overcharging and energy waste. Simultaneously, α does not affect the inspiratory phase, ensuring that the therapeutic power during the inspiratory phase is not affected by the battery state, thus guaranteeing the safety and effectiveness of respiratory therapy.

[0055] In this embodiment of the invention, sub-step S11 may specifically include the following sub-steps: Sub-step S111: If the estimated backup power duration is less than the first preset duration, determine the charging power coefficient as the first value.

[0056] Sub-step S112: If the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration, determine the charging power coefficient as the second value.

[0057] Sub-step S113: If the estimated backup power duration is greater than or equal to the second preset duration, determine the charging power coefficient as the third value; wherein the first preset duration is less than the second preset duration, the first value is greater than the second value, and the second value is greater than the third value.

[0058] The charging intensity coefficient α can be determined in a segmented manner based on the estimated backup power duration. For example, the estimated backup power duration can be divided into three intervals, each corresponding to a value of α. When the estimated backup power duration is less than a first preset duration (e.g., less than 30 minutes), it indicates that the battery power is critical, and the controller determines the charging intensity coefficient α to the first value (e.g., α=1.0). At this time, the remaining battery power is low, and it needs to be charged at maximum power to restore the backup power duration as soon as possible, ensuring that the device has sufficient backup power duration when the mains power is interrupted, thus protecting patient safety. When the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration (e.g., greater than or equal to 30 minutes and less than 45 minutes), it indicates that the battery power is moderate, and the controller determines the charging intensity coefficient α to the second value (e.g., α=0.8). At this time, the battery power is still acceptable, and it is charged at a moderate power, replenishing the power while avoiding excessive burden on the system, achieving a balance between charging efficiency and system stability. When the estimated backup power duration is greater than or equal to the second preset duration (e.g., greater than or equal to 45 minutes), it indicates that the battery is fully charged, and the controller determines the charging power coefficient α to a third value (e.g., α = 0.6). At this time, the battery has sufficient charge, so it is charged at a lower power to avoid overcharging and energy waste, thus extending battery life. The shorter the estimated backup power duration, the larger the value of α, and the higher the charging power; the longer the estimated backup power duration, the smaller the value of α, and the lower the charging power.

[0059] It should be noted that the specific values ​​of the preset durations (such as 30 minutes, 45 minutes) and the values ​​of α (such as 1.0, 0.8, 0.6) mentioned above are merely illustrative examples. Those skilled in the art can make adaptive adjustments according to the actual equipment configuration and clinical needs, and these all fall within the protection scope of this invention.

[0060] In this embodiment of the invention, step 104 may include the following sub-steps: The upper limit of the first mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the first mains power supply. And / or, step 105 may include the following sub-steps: The upper limit of the second mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the second mains power supply.

[0061] In one implementation, the upper limits of the first and second mains power supply can be determined by the controller based on a charging power coefficient α through a preset mapping relationship. The preset mapping relationship is the correspondence between the charging power coefficient α and the upper limits of the power supply. The charging power coefficient α and the upper limits of the power supply are inversely linked: the larger the charging power coefficient α, the more critical the battery charge, and the smaller the upper limit of the power supply; conversely, the smaller the charging power coefficient α, the more abundant the battery charge, and the larger the upper limit of the power supply. That is, when the battery charge is critical, the upper limit of the adapter's power supply is reduced to free up more power for battery charging; when the battery charge is sufficient, the upper limit of the adapter's power supply is increased, allowing the mains power to handle more of the load power and reducing the battery's output.

[0062] The preset mapping relationship can be implemented using a lookup table. The controller pre-stores a mapping table between the charging intensity coefficient α and the upper limit of the power supply. When the controller determines the value of α, it obtains the corresponding upper limit of the power supply by looking up the table.

[0063] Specifically, the controller determines the upper limit of the first mains power supply during the exhalation phase and the upper limit of the second mains power supply during the breath-holding phase by querying a preset mapping table or according to a preset function relationship based on the charging intensity coefficient α.

[0064] For example, when the charging power coefficient α = 1.0 (i.e., the battery is critically low and the estimated backup power duration is less than 30 minutes), the upper limit of the first AC power supply is 70% of the adapter's rated power, and the upper limit of the second AC power supply is 50% of the adapter's rated power. When the charging power coefficient α = 0.8 (i.e., the battery is moderately charged and the estimated backup power duration is greater than or equal to 30 minutes and less than 45 minutes), the upper limit of the first AC power supply is 80% of the adapter's rated power, and the upper limit of the second AC power supply is 60% of the adapter's rated power. When the charging power coefficient α = 0.6 (i.e., the battery is fully charged and the estimated backup power duration is greater than or equal to 45 minutes), the upper limit of the first AC power supply is 90% of the adapter's rated power, and the upper limit of the second AC power supply is 70% of the adapter's rated power. By establishing a preset mapping relationship between the charging power coefficient α and the upper limit of the power supply, the upper limit of the adapter's power supply can be adaptively adjusted in reverse according to the battery's charge level.

[0065] It should be noted that the preset durations (30 minutes, 45 minutes), percentage values ​​(70%, 80%, 90%, etc.), and values ​​of α (1.0, 0.8, 0.6) mentioned above are merely illustrative examples. Those skilled in the art can make adaptive adjustments based on actual equipment configuration and clinical needs, and these all fall within the protection scope of this invention.

[0066] In this embodiment of the invention, the method further includes: When the breathing phase is the exhalation phase, the upper limit of the first battery power supply is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the first battery power supply. When the breathing phase is the breath-holding phase, the upper limit of the power supply of the second battery is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the power supply of the second battery; the upper limit of the power supply of the first battery is less than the upper limit of the power supply of the second battery.

[0067] Specifically, the battery can also supply power to the load during the exhalation and breath-hold phases, and the upper limit of the battery's power supply is determined based on the battery's state parameters. That is, during the process of both mains power and the battery supplying power to the load, the controller adjusts the upper limit of the battery's output power in real time according to the battery's state parameters, so that the battery can bear the corresponding load power during the exhalation and breath-hold phases.

[0068] The exhalation phase is the stage where the load power demand is between the inhalation and breath-hold phases. During this phase, the battery moderately participates in power supply, undertaking a portion of the load power, leaving power margin for the mains to charge the battery. The breath-hold phase is the stage where the load power demand is lowest. At this stage, the battery undertakes a larger proportion of the load power supply, allowing the mains to allocate more power for battery charging, achieving more efficient energy replenishment. The upper limit of the battery's second power supply during the breath-hold phase is higher than the upper limit of its first power supply during the exhalation phase, making full use of this window of lowest power demand for rapid energy replenishment.

[0069] During breath-holding, the battery's power output is at its highest (e.g., 80% of its rated power), allowing the battery to handle more load power and freeing up AC power for charging, thus quickly restoring battery charge. During exhalation, the battery's power output is moderate (e.g., 60% of its rated power), with the battery moderately participating in load power supply, freeing up AC power for charging without excessively depleting battery charge. During inhalation, the battery's power output is at its lowest (e.g., fixed at 30% of its rated power), with the battery only acting as a transient buffer, minimizing the cost to maintain system stability, while reserving battery charge for use during exhalation and breath-holding. Through this phase-by-phase control, the battery's discharge and charging behavior are synchronized with the respiratory rhythm, avoiding disordered discharge and extending battery life.

[0070] In this embodiment of the invention, determining the upper limit of the first battery power supply based on battery state parameters includes: The upper limit of the power supply of the first battery is determined based on the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the first battery. And / or, The upper limit of the power supply of the second battery is determined based on the battery state parameters, including: The upper limit of the power supply of the second battery is determined based on the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the second battery.

[0071] Specifically, there is a positive correlation between the charging power coefficient α and the upper limit of the battery's power supply. The larger α is, the larger the upper limit of the battery's power supply; the smaller α is, the smaller the upper limit of the battery's power supply. That is, when the battery is low on power (larger α), the battery takes on more load power, allowing the mains power to free up power for charging, achieving "the battery does more work, the mains power gives way more power"; when the battery is fully charged (smaller α), the battery reduces its output, allowing the mains power to take on more load power, allowing the battery to "rest".

[0072] During the exhalation phase, the controller determines the upper limit of the first battery power supply based on the charging intensity coefficient α. The larger α is, the larger the upper limit of the first battery power supply (e.g., when α=1.0, the upper limit of the first battery power supply increases from 60% to 70% of the rated power value); the smaller α is, the smaller the upper limit of the first battery power supply (e.g., when α=0.6, it decreases from 60% to 50% of the rated power value).

[0073] During the air-hold phase, the controller determines the upper limit of the second battery's power supply based on the charging intensity coefficient α. The larger α is, the higher the upper limit of the second battery's power supply (e.g., when α=1.0, the upper limit increases from 80% to 90% of the rated power); the smaller α is, the lower the upper limit of the second battery's power supply (e.g., when α=0.6, it decreases from 80% to 60% of the rated power). It should be noted that the percentage values ​​mentioned above (e.g., 60%, 70%, 80%, 90%, etc.) are illustrative examples, and those skilled in the art can make adaptive adjustments based on actual equipment configuration and clinical needs; all of these adjustments fall within the scope of protection of this invention.

[0074] The larger α is (the lower the battery charge), the smaller the upper limit of the mains power supply, the larger the upper limit of the battery power supply, and the larger the charging power command. This means "mains power yields more, battery takes on more, and charging is rapid." Conversely, the smaller α is (the more fully charged the battery), the larger the upper limit of the mains power supply, the smaller the upper limit of the battery power supply, and the smaller the charging power command. This means "mains power takes on more, battery outputs less, and charging is gentle." Through this coordinated adjustment mechanism, the upper limits of the mains power supply, battery power supply, and charging power command work together to ensure that the charging process is always completed within the combined safe limits of both the mains power and the battery. Through the aforementioned linkage adjustment mechanism, the upper limit of mains power supply, the upper limit of battery power supply, and the charging power command work together to achieve dynamic power allocation optimization under the dual power supply system of mains and battery. This effectively avoids over-discharge or unreasonable load distribution that may occur when the battery passively participates in compensation power supply. The distribution relationship between the upper limit of battery power supply, charging power, and upper limit of mains power supply is adaptively adjusted according to the battery status, ensuring that the charging action is always completed within the joint safety limit of mains power and battery. This ensures that the equipment has a stable and predictable minimum backup power duration in the event of a power outage.

[0075] In this embodiment of the invention, sub-step S11 further includes: When the estimated backup power duration changes from less than the first preset duration to greater than or equal to the first preset duration, the charging power coefficient remains at the current value until the estimated backup power duration continues to be greater than or equal to the first preset duration and reaches the preset duration. Then, the charging power coefficient is switched from the first value to the second value.

[0076] When determining the charging intensity coefficient α based on the estimated backup power duration, the controller employs a hysteresis switching mechanism to avoid frequent jumps in the α value near the interval boundary due to minor fluctuations in the estimated backup power duration. This, in turn, avoids frequent fluctuations in the charging power command and the upper limit of the power supply. Specifically, when the estimated backup power duration changes from less than a first preset duration to greater than or equal to the first preset duration, the controller does not immediately switch the charging intensity coefficient α from the first value to the second value. Instead, it maintains the charging intensity coefficient α at the current value (i.e., the first value) until the estimated backup power duration continuously exceeds or equals the first preset duration to a preset duration (e.g., 3 minutes). Only then does the controller switch the charging intensity coefficient α from the first value to the second value.

[0077] Similarly, when the estimated backup power duration changes from one side of the second preset duration to the other side, the same hysteresis switching mechanism is also used. For example, the preset duration (i.e., hysteresis time) can be 3 minutes, and this duration can be adaptively adjusted according to the actual equipment configuration and clinical needs, such as 2 minutes, 5 minutes, etc., all of which are within the protection scope of this invention.

[0078] Through the aforementioned hysteresis switching mechanism, the switching of the charging power coefficient α at the interval boundary has a time confirmation characteristic. That is, after the switching conditions are met, it is necessary to continuously confirm for a preset time, and only after the confirmation is stable will the switching be performed. This effectively avoids power command oscillation caused by the short-term fluctuation of the estimated backup power duration near the critical point.

[0079] In this embodiment of the invention, the method further includes: In the event of a mains power outage, the operating level is determined based on the battery status parameters; there are multiple operating levels, and different operating levels correspond to different operating parameters for different loads on the respiratory equipment. According to the operating level, the load of the respiratory equipment is controlled to operate according to the corresponding operating parameters.

[0080] Specifically, the operating level refers to the load operating level of the respiratory equipment after a power outage. It indicates the operating parameter level corresponding to each load of the respiratory equipment under the current battery charge. There are multiple operating levels, each corresponding to different load operating parameters. That is, at a higher operating level, the operating parameters of each load are higher, and the equipment consumes more power; at a lower operating level, the operating parameters of each load are lower or some loads are turned off, and the equipment consumes less power to extend battery life.

[0081] The operating level is determined by the controller based on the estimated backup power duration range, and decreases progressively as the estimated backup power duration decreases. When the estimated backup power duration is sufficient, the operating level is higher, and all loads maintain normal or near-normal operation. When the estimated backup power duration is insufficient, the operating level is lowered accordingly. By adjusting or shutting down the operating parameters of some loads, the overall power consumption is reduced, thereby extending battery power supply time and ensuring the continuous operation of the core respiratory support function.

[0082] In this embodiment of the invention, the load includes a fan, a humidifying heating plate, and a heating pipeline; as the operating level decreases, the operating parameters of the humidifying heating plate and / or the heating pipeline are reduced before the operating parameters of the fan, and the fan maintains a preset minimum effective ventilation volume when the operating level reaches the lowest level.

[0083] The load of a breathing device includes a fan, a humidifying heating plate, and heating tubing. Among these, the fan is a rigid load that must maintain a minimum effective ventilation volume to ensure the user's ventilation safety; the humidifying heating plate is a flexible load that can dynamically adjust its temperature based on the remaining battery power; and the heating tubing is an interruptible load that can be completely shut off when the battery power is low.

[0084] As the operating level decreases, the controller progressively reduces the operating parameters of each load according to its priority. Specifically, the heating pipes have the lowest priority, the humidification heating plate has the second highest priority, and the fan has the highest priority. That is, the heating pipes are reduced in operating parameters or shut down before the humidification heating plate, the humidification heating plate is reduced in operating parameters before the fan, and the fan maintains a preset minimum effective ventilation rate when the operating level reaches the lowest level.

[0085] The operating levels include multiple levels. For example, according to the backup power duration from longest to shortest, the operating levels are divided into the first operating level (L1), the second operating level (L2), the third operating level (L3), and the fourth operating level (L4). The load operating parameters corresponding to each operating level are as follows: First operating level (L1, backup power duration > 60 min): The battery power is sufficient, the fan maintains the user-set value, the humidification heating plate maintains the user-set value, and the heating pipeline maintains the user-set value; Second operating level (L2, backup power duration 30-60 min): The battery power is moderately low, the fan maintains the user-set value. User-defined operating values: 1-2°C decrease in humidification heating plate temperature (minimum not lower than 34°C), 2-3°C decrease in heating pipe temperature; 2. Third operating level (L3, backup power duration 15-30 min): Battery power is low, fan starts to decrease but not lower than the preset minimum effective ventilation volume, humidification heating plate temperature drops to the minimum safe temperature (e.g., 34°C), heating pipe temperature drops to 31°C, maintaining only a slight temperature; 3. Fourth operating level (L4, backup power duration ≤ 15 min): Battery power is extremely low, fan directly drops to the preset minimum effective ventilation volume, humidification heating plate temperature is maintained at the minimum safe temperature (e.g., 34°C), heating pipe temperature is completely shut off.

[0086] As the operating level decreases from the first to the fourth operating level, the heating pipeline is adjusted (closed) first, followed by the humidifying heating plate (temperature gradually reduced), and the fan is adjusted last (reduced to the minimum effective ventilation). That is, the lower the operating level, the lower the operating parameters of the fan, humidifying heating plate, and heating pipeline decrease in sequence, but the fan will not be lower than the preset minimum effective ventilation at any operating level.

[0087] In this embodiment of the invention, the method further includes: When the mains power is restored from the interruption, the control fan is gradually increased to the user-set flow rate value; And / or, control the humidification heating plate to gradually increase to the user-set temperature value; And / or, control the heating pipes to resume heating after a preset delay time.

[0088] Specifically, when the mains power is restored from an interruption, the load on the respiratory equipment recovers from a degraded operating state to a normal operating state. If all loads start up and recover to the user-set values ​​simultaneously, a sudden surge in current will occur, which may trigger the mains line overload protection or cause a drop in DC bus voltage. Therefore, a stepped recovery strategy is required to gradually restore each load to its normal operating parameters in a time-sharing and step-by-step manner.

[0089] The controller controls the fan to gradually increase the flow rate to the user-set value according to a preset flow rate step and a preset time interval. For example, the flow rate step is 10L / min and the time interval is 5 seconds. That is, after the mains power is restored, the fan flow rate starts from the current value and increases by one level every 5 seconds (e.g., 10L / min → 15L / min → 20L / min...) until it is restored to the user-set flow rate value.

[0090] The controller controls the humidification heating plate to gradually increase the temperature to the user-set temperature value according to a preset temperature step and a preset time interval. For example, the temperature step is 1°C and the time interval is 10 seconds. That is, after the mains power is restored, the temperature of the humidification heating plate starts from the current value and increases by 1°C every 10 seconds until it returns to the user-set temperature value.

[0091] The controller controls the heating element to resume heating after a preset delay. For example, the preset time is 30 seconds. That is, after the mains power is restored, the heating element does not start heating immediately, but delays for 30 seconds before resuming heating to avoid current surges caused by simultaneous startup with the humidification heating plate.

[0092] By employing the aforementioned staggered, gradual recovery strategy, the startup times of each load are staggered, resulting in a smooth power ramp-up process and avoiding current surges caused by simultaneous startup of all loads.

[0093] Reference Figure 3 The diagram illustrates a structural schematic of a control device for a respiratory device according to an embodiment of the present invention. The respiratory device includes a power supply circuit, which includes a power adapter and a battery. The power adapter is used to connect to mains power and is electrically connected to the load of the respiratory device and the battery. The battery is electrically connected to the load. The control device includes: The breathing phase determination module 201 is used to determine the breathing phase of the user of the breathing device at the current moment; the breathing phase includes one of the inspiratory phase, expiratory phase and breath-holding phase; The battery status parameter acquisition module 202 is used to acquire the battery status parameters at the current moment. The inspiratory phase control module 203 is used to control the power adapter to supply power to the load according to the rated power value, control the battery to supply power to the load according to the preset power value, and control the power adapter not to charge the battery when the breathing phase is the inspiratory phase. The expiratory phase control module 204 is used to determine the first mains power supply limit and the first charging power limit based on the battery status parameters when the breathing phase is the expiratory phase, control the power adapter to supply power to the load according to the first mains power supply limit, and control the power adapter to charge the battery according to the first charging power limit. The breath-hold phase control module 205 is used to determine the upper limit of the second mains power supply and the upper limit of the second charging power according to the battery status parameters when the breathing phase is the breath-hold phase, control the power adapter to supply power to the load according to the upper limit of the second mains power supply, and control the power adapter to charge the battery according to the upper limit of the second charging power; the upper limit of the first mains power supply is greater than the upper limit of the second mains power supply.

[0094] In this invention, the battery status parameters include the estimated backup power duration; the exhalation phase control module includes: The first charging power coefficient submodule is used to determine the charging power coefficient based on the estimated backup power duration. The first charging power upper limit determination submodule is used to set the first charging power upper limit as the product of the rated charging power and the charging strength coefficient; And / or, The air-hold phase control module includes: The second charging power coefficient submodule is used to determine the charging power coefficient based on the estimated backup power duration. The second charging power upper limit determination submodule is used to set the second charging power upper limit as the product of the rated charging power and the charging intensity coefficient.

[0095] In this invention, the first charging force coefficient submodule includes: The first value determination unit is used to determine the charging power coefficient as the first value when the estimated backup power duration is less than the first preset duration. The second value determination unit is used to determine the charging power coefficient as the second value when the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration. The third value determination unit is used to determine the charging power coefficient as a third value when the estimated backup power duration is greater than or equal to the second preset duration; wherein the first preset duration is less than the second preset duration, the first value is greater than the second value, and the second value is greater than the third value.

[0096] In this invention, the expiratory phase control module includes: The first AC power supply power limit determination submodule is used to determine the first AC power supply power limit based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the first AC power supply power limit. And / or, The air-hold phase control module includes: The second AC power supply upper limit determination submodule is used to determine the upper limit of the second AC power supply based on the charging intensity coefficient; the larger the charging intensity coefficient, the smaller the upper limit of the second AC power supply.

[0097] In this embodiment of the invention, the device further includes: The first battery power supply limit determination module is used to determine the first battery power supply limit based on the battery status parameters when the breathing phase is the exhalation phase, and control the battery to supply power to the load according to the first battery power supply limit. The second battery power supply upper limit determination module is used to determine the upper limit of the second battery power supply based on the battery state parameters when the breathing phase is the breath-holding phase, and control the battery to supply power to the load according to the upper limit of the second battery power supply; the upper limit of the first battery power supply is less than the upper limit of the second battery power supply.

[0098] In this invention, the first battery power supply upper limit determination module includes: The first battery power supply limit submodule is used to determine the first battery power supply limit based on the charging strength coefficient; the larger the charging strength coefficient, the larger the first battery power supply limit. And / or, the second battery power supply upper limit determination module includes: The second battery power supply limit determination submodule is used to determine the upper limit of the second battery power supply based on the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the second battery power supply.

[0099] In this embodiment of the invention, the device further includes: The switching module is used to maintain the charging power coefficient at its current value when the estimated backup power duration changes from less than the first preset duration to greater than or equal to the first preset duration, until the estimated backup power duration continues to be greater than or equal to the first preset duration and reaches the preset duration, at which point the charging power coefficient is switched from the first value to the second value.

[0100] In this embodiment of the invention, the device further includes: The operating level determination module is used to determine the operating level based on battery status parameters in the event of a mains power outage. The operating level includes multiple levels, with different operating levels corresponding to different operating parameters for different loads on the respiratory equipment. The load control module is used to control the load of the respiratory equipment to operate according to the corresponding operating parameters based on the operating level.

[0101] In this invention, the load includes a fan, a humidifying heating plate, and heating pipes; as the operating level decreases, the operating parameters of the humidifying heating plate and / or heating pipes are reduced before the operating parameters of the fan, and the fan maintains a preset minimum effective ventilation when the operating level reaches the lowest level.

[0102] In this embodiment of the invention, the device further includes: The fan control module is used to control the fan to gradually increase the flow rate to the user-set value when the mains power is restored from the interruption state; And / or, a humidification heating plate control module, used to control the humidification heating plate to gradually increase to the user-set temperature value; And / or, a heating pipeline control module, used to control the heating pipeline to resume heating after a preset delay time.

[0103] The terms "first," "second," etc., used in this specification are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0104] Optionally, embodiments of the present invention also provide a breathing device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor 110, they implement the various processes of the control method embodiments of the breathing device described above and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0105] This invention also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the control method embodiment of the breathing device described above and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0106] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0107] This invention also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the control method embodiment of the above-described breathing device, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0108] It should be understood that the chip mentioned in the embodiments of the present invention may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0109] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0110] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0111] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A control method for a breathing device, characterized in that, The breathing device includes a power supply circuit, which includes a power adapter and a battery. The power adapter is used to connect to mains power and is electrically connected to the load of the breathing device and the battery. The battery is electrically connected to the load; the control method includes: Determine the respiratory phase of the user of the breathing device at the current moment; the respiratory phase includes one of the inspiratory phase, expiratory phase, and breath-holding phase; Obtain the battery status parameters of the battery at the current moment; the battery status parameters include the estimated backup power duration; When the breathing phase is the inspiratory phase, the power adapter is controlled to supply power to the load according to the rated power value, the battery is controlled to supply power to the load according to the preset power value, and the power adapter is controlled not to charge the battery; When the breathing phase is the exhalation phase, a first mains power supply limit and a first charging power limit are determined according to the battery state parameters. The power adapter is controlled to supply power to the load according to the first mains power supply limit and to charge the battery according to the first charging power limit. When the breathing phase is the breath-holding phase, a second AC power supply limit and a second charging power limit are determined based on the battery state parameters. The power adapter is controlled to supply power to the load according to the second AC power supply limit and to charge the battery according to the second charging power limit. The first AC power supply limit is greater than the second AC power supply limit.

2. The control method according to claim 1, characterized in that, Determining the first charging power limit based on the battery state parameters includes: Based on the estimated backup power duration, determine the charging capacity coefficient; The first charging power limit is set as the product of the rated charging power and the charging power coefficient; And / or, Determining the second charging power upper limit based on the battery state parameters includes: Based on the estimated backup power duration, determine the charging capacity coefficient; The second charging power limit is set as the product of the rated charging power and the charging power coefficient.

3. The control method according to claim 2, characterized in that, The step of determining the charging capacity coefficient based on the estimated backup power duration includes: If the estimated backup power duration remains less than the first preset duration, the charging power coefficient is determined to be a first value. If the estimated backup power duration is greater than or equal to the first preset duration and less than the second preset duration, the charging power coefficient is determined to be the second value. If the estimated backup power duration is greater than or equal to the second preset duration, the charging power coefficient is determined to be a third value; wherein the first preset duration is less than the second preset duration, the first value is greater than the second value, and the second value is greater than the third value.

4. The control method according to claim 2, characterized in that, Determining the upper limit of the first mains power supply based on the battery state parameters includes: The upper limit of the first mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the first mains power supply. And / or, The step of determining the upper limit of the second mains power supply based on the battery state parameters includes: The upper limit of the second mains power supply is determined based on the charging strength coefficient; the larger the charging strength coefficient, the smaller the upper limit of the second mains power supply.

5. The control method according to claim 2, characterized in that, The method further includes: When the breathing phase is the exhalation phase, the upper limit of the first battery power supply is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the first battery power supply. When the breathing phase is the breath-holding phase, the upper limit of the second battery power supply is determined according to the battery state parameters, and the battery is controlled to supply power to the load according to the upper limit of the second battery power supply; the upper limit of the first battery power supply is less than the upper limit of the second battery power supply.

6. The control method according to claim 5, characterized in that, Determining the upper limit of the first battery power supply based on the battery state parameters includes: The upper limit of the power supply of the first battery is determined according to the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the first battery. And / or, Determining the upper limit of the second battery's power supply based on the battery state parameters includes: The upper limit of the power supply of the second battery is determined based on the charging strength coefficient; the larger the charging strength coefficient, the larger the upper limit of the power supply of the second battery.

7. The control method according to claim 3, characterized in that, The step of determining the charging capacity coefficient based on the estimated backup power duration also includes: When the estimated backup power duration changes from less than the first preset duration to greater than or equal to the first preset duration, the charging power coefficient remains at the current value until the estimated backup power duration continues to be greater than or equal to the first preset duration and reaches the preset duration, at which point the charging power coefficient is switched from the first value to the second value.

8. The control method according to claim 1, characterized in that, The method further includes: In the event of a mains power outage, the operating level is determined based on the battery status parameters; the operating level includes multiple levels, and different operating levels correspond to different operating parameters for different loads of the respiratory device; Based on the operating level, the load of the respiratory equipment is controlled to operate according to the corresponding operating parameters.

9. The control method according to claim 8, characterized in that, The load includes a fan, a humidifying heating plate, and heating pipes; as the operating level decreases, the operating parameters of the humidifying heating plate and / or the heating pipes are reduced before the operating parameters of the fan, and the fan maintains a preset minimum effective ventilation when the operating level reaches the lowest level.

10. The control method according to claim 9, characterized in that, The method further includes: When the mains power is restored from the interruption state, the fan is controlled to gradually increase to the user-set flow rate value; And / or, control the humidification heating plate to gradually increase to the user-set temperature value; And / or, control the heating pipeline to resume heating after a preset delay time.

11. A control device for a breathing apparatus, characterized in that, The breathing device includes a power supply circuit, which includes a power adapter and a battery. The power adapter is used to connect to mains power and is electrically connected to the load of the breathing device and the battery. The battery is electrically connected to the load; the control device includes: The breathing phase determination module is used to determine the breathing phase of the user of the breathing device at the current moment; the breathing phase includes one of the inspiratory phase, expiratory phase and breath-holding phase; A battery status parameter acquisition module is used to acquire the battery status parameters of the battery at the current moment. The inspiratory phase control module is used to control the power adapter to supply power to the load according to the rated power value, control the battery to supply power to the load according to the preset power value, and control the power adapter not to charge the battery when the breathing phase is the inspiratory phase. The expiratory phase control module is used to determine a first mains power supply limit and a first charging power limit based on the battery state parameters when the breathing phase is the expiratory phase, control the power adapter to supply power to the load according to the first mains power supply limit, and control the power adapter to charge the battery according to the first charging power limit; The breath-holding phase control module is used to determine a second upper limit of AC power supply and a second upper limit of charging power based on the battery state parameters when the breathing phase is the breath-holding phase, control the power adapter to supply power to the load according to the second upper limit of AC power supply, and control the power adapter to charge the battery according to the second upper limit of charging power; the first upper limit of AC power supply is greater than the second upper limit of AC power supply.

12. A breathing device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the control method for the respiratory device as described in any one of claims 1-10.

13. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the control method for the respiratory device as described in any one of claims 1-10.

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