Control method and device of electric breast pump and electric breast pump

Abstract

The invention discloses a control method and device for an electric breast pump and the electric breast pump, and the control method applied to the electric breast pump comprises the steps: responding to a first mode instruction, controlling a vacuum pump to operate so as to reduce the air pressure of an inner cavity of a breast suction cover, and monitoring the real-time air pressure value of the inner cavity; when the real-time air pressure value reaches a first target air pressure threshold value, a working mode instruction input by a user is obtained, and the working mode instruction comprises a working mode identifier; when the working mode identifier corresponds to a second working mode, the vacuum pump is controlled to stop running, and the piezoelectric pump is started to run in a first preset mode; and when the working mode identifier corresponds to a third working mode, the vacuum pump and the piezoelectric pump are controlled to operate according to a preset cooperative mode. By the adoption of heterogeneous combination of the vacuum pump and the piezoelectric pump and dynamic switching logic based on the negative pressure threshold value, efficient pressure building, powerful suction and mute operation of the breast pump can be achieved at the same time.

Description

Technical Field

[0001] This invention relates to the field of electric breast pump technology, and more particularly to a control method, device, and electric breast pump. Background Technology

[0002] As an important maternal and infant care device, the core function of an electric breast pump is to simulate a baby's sucking motion by generating periodic negative pressure, thereby helping mothers to extract and store breast milk. In this process, the power source that generates the negative pressure is the key component of the device, and its performance directly determines the device's overall performance in terms of noise, vibration, size, and the end-user's breast pumping experience.

[0003] There are two main technical approaches currently available: the first approach is to completely replace traditional vacuum pumps with low-noise pump bodies; the second approach is to optimize the structure of traditional vacuum pumps to reduce their noise.

[0004] In summary, existing breast pump power systems face an irreconcilable contradiction: while pure piezoelectric pumps achieve low noise, they sacrifice pumping performance and have longer pressure build-up times; while improved vacuum pumps offer a compromise between performance and noise, their quietness still cannot match that of piezoelectric pumps. This forces users to make trade-offs between pumping efficiency and user comfort. Neither a single pump type nor a simple combination or improvement of similar pump types can guarantee both powerful, efficient pumping performance and an extremely quiet operating experience. Summary of the Invention

[0005] The main objective of this application is to provide a control method, device, and electric breast pump for an electric breast pump, aiming to solve the technical problems of high noise level, insufficient suction force, and low efficiency of breast pumps.

[0006] To achieve the above objectives, this application proposes a control method for an electric breast pump, wherein the electric breast pump includes a main unit, a breast shield, a milk storage container, a vacuum pump, and a piezoelectric pump. The vacuum pump and the piezoelectric pump are disposed within the main unit. The air inlet of the vacuum pump and the air inlet of the piezoelectric pump are connected to the inner cavity of the breast shield via an air passage. The control method includes: In response to the first working mode command, the vacuum pump is controlled to operate to reduce the air pressure inside the breast shield, and the real-time air pressure value inside the breast shield is monitored. When the real-time air pressure value reaches the first target air pressure threshold, the working mode is determined based on the working mode instruction, which includes a working mode identifier. When the operating mode identifier corresponds to the second operating mode, the vacuum pump is controlled to stop running and the piezoelectric pump is started to operate in the first preset mode. When the operating mode identifier corresponds to the third operating mode, the vacuum pump and the piezoelectric pump are controlled to operate in a preset cooperative mode.

[0007] Furthermore, the first preset method includes: controlling the piezoelectric pump to operate with a first driving parameter to generate a periodic pulsating negative pressure in the inner cavity of the breast shield, wherein the first driving parameter includes at least one of operating frequency, duty cycle or driving voltage.

[0008] Furthermore, during the operation of the piezoelectric pump, the current air pressure value in the inner cavity is continuously monitored; when the current air pressure value reaches the second target air pressure threshold, the driving parameters of the piezoelectric pump are adjusted to switch it from the first driving parameter to the second driving parameter; after the piezoelectric pump runs with the second driving parameter for a second preset time, if no new working mode command is obtained, the electric breast pump is controlled to enter the standby state.

[0009] Furthermore, when the operating mode identifier corresponds to the third mode, controlling the vacuum pump and piezoelectric pump to operate in a preset coordinated manner includes: starting the piezoelectric pump while reducing the output power of the vacuum pump from the initial power to the maintenance power; during coordinated operation, monitoring the current air pressure value of the inner cavity in real time and accumulating the coordinated working time of the piezoelectric pump and the vacuum pump; when the third target stop condition is met, controlling the vacuum pump and the piezoelectric pump to stop operating and opening the pressure relief passage to restore the air pressure in the inner cavity to the ambient air pressure.

[0010] Furthermore, the third target stopping condition includes any one or a combination of the following: the collaborative working time reaches the collaborative working time threshold; the current air pressure value reaches the third preset air pressure threshold; or a stop trigger command is received from the user.

[0011] Furthermore, if no new operating mode command is received after the vacuum pump and piezoelectric pump stop operating, the electric breast pump will be controlled to enter standby mode; if a new operating mode command is received in standby mode, the corresponding operating mode control process will be re-executed according to the command.

[0012] Furthermore, controlling the output power of the vacuum pump to decrease from the initial power to the maintenance power includes: controlling the drive current of the vacuum pump to decrease from a first current value to a second current value, where the first current value corresponds to the initial operating state of the vacuum pump and the second current value corresponds to the minimum drive current required to maintain the base negative pressure.

[0013] Furthermore, the first preset current value is 180 to 220 mA, and the second preset power value is 10% to 50% of the rated power of the vacuum pump.

[0014] This application also proposes a control device for an electric breast pump, the control device comprising: a memory; a processor; and a control program for the electric breast pump stored in the memory and executed by the processor, the control program for the electric breast pump implementing the control method for the electric breast pump as described above when executed by the processor.

[0015] This application also proposes an electric breast pump, comprising: a main unit, a breast shield, a milk storage container, a vacuum pump, and a piezoelectric pump. The vacuum pump and the piezoelectric pump are mounted on the main unit. At least one of the milk storage container and the breast shield is detachably mounted on the main unit. The air inlet of the vacuum pump and the air inlet of the piezoelectric pump are in communication with the inner cavity of the breast shield.

[0016] This application employs a heterogeneous combination of a vacuum pump and a piezoelectric pump, and through dynamic switching logic based on a negative pressure threshold, it can simultaneously achieve efficient pressure build-up, strong suction, and quiet operation of the breast pump. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A flowchart illustrating an embodiment of the control method for the electric breast pump of this application; Figure 2 A schematic diagram of the second working mode provided in Embodiment 1 of the control method for the electric breast pump of this application; Figure 3 A flowchart illustrating Embodiment 2 of the control method for the electric breast pump of this application; Figure 4 A schematic diagram of the third working mode provided in Embodiment 2 of the control method for the electric breast pump of this application; Figure 5 This is a schematic diagram of the structure of the electric breast pump according to an embodiment of this application; The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0021] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0022] This application provides a control method for an electric breast pump. The electric breast pump mainly includes: a main unit 100, a breast shield 200, a milk storage container 300, a vacuum pump 101, and a piezoelectric pump 102. The vacuum pump 101 and the piezoelectric pump 102 are disposed inside the main unit 100, and the air ports of the vacuum pump 101 and the piezoelectric pump 102 are interconnected with the inner cavity of the breast shield 200.

[0023] Example 1 like Figure 1 As shown, Figure 1 This is a flowchart illustrating the control method of the electric breast pump provided in Embodiment 1 of this application.

[0024] refer to Figure 1 In this embodiment, the control method for the electric breast pump includes the following steps: In step S10, in response to the first mode command, the vacuum pump is controlled to operate to reduce the air pressure inside the breast shield and the real-time air pressure value inside the breast shield is monitored.

[0025] The first mode command is the pressure build-up command; in response to this command, the main unit drives the vacuum pump to start drawing air from the inner cavity of the breast shield (when pumping, the breast shield fits against the user's breast) to build negative pressure; during this process, the real-time air pressure value is continuously monitored by a miniature pressure sensor on the main unit that is connected to the inner cavity of the breast shield.

[0026] In this embodiment, the vacuum pump has a rated power of 10 watts and a corresponding drive current of 500 mA. At this power, the vacuum pump can operate at maximum flow rate, causing the internal pressure to rapidly drop from atmospheric pressure to the target negative pressure critical point of -200 mmHg in a short time.

[0027] Step S11: When the real-time air pressure value reaches the first target air pressure threshold, a working mode is determined based on a working mode command. The working mode command includes a working mode identifier. The working mode command can be entered by the user immediately or pre-configured by the user as needed before use. When the working mode command is pre-configured, the first target air pressure threshold is the condition for triggering the working mode command. In this step, when the air pressure in the inner cavity reaches the first target air pressure threshold, if no working mode command is obtained within the preset window period, the breast pump enters a low-power standby mode. In this embodiment, the working mode identifier is determined by one or more parameter combinations selected by the user through the interface. These parameters include, but are not limited to: suction strength: for example, high suction strength, medium suction strength, low suction strength; pump type and coordination method: for example, vacuum pump, piezoelectric pump, or dual pump coordination; and working frequency: for example, high frequency, medium frequency, low frequency, etc. The host computer maps to a specific working mode based on these parameters.

[0028] The system has multiple preset operating modes, each corresponding to a set of operating mode identifiers composed of parameters such as suction strength, pump type, coordination method, and operating frequency. A specific allocation example is shown below: Mode 1 is the silent priority mode. Suction strength: low or medium; Working mode: piezoelectric pump works alone (the vacuum pump only runs briefly during the initial pressure build-up phase and then stops); Working frequency: low frequency (e.g., the piezoelectric pump working frequency is set in the range of 10-30Hz to simulate a soothing suction rhythm); Suitable scenarios: nighttime use, environments that require a quiet environment, or users who are sensitive to noise.

[0029] Mode 2 is a balanced comfort mode. Suction strength: medium; Working method: The vacuum pump and piezoelectric pump work together, but the piezoelectric pump is dominant. The vacuum pump assists in establishing and maintaining the basic negative pressure with lower power, while the piezoelectric pump is responsible for generating the main stimulation fluctuations. Operating frequency: medium frequency (e.g., the piezoelectric pump's operating frequency is set in the range of 30-60Hz to balance stimulation intensity and comfort); Suitable scenarios: daily use, balancing breast pumping efficiency and comfort.

[0030] Mode 3: High-efficiency and powerful mode; Suction strength: High; Pump type and coordination method: Strong collaboration between vacuum pump and piezoelectric pump. The vacuum pump is responsible for quickly establishing a high negative pressure and maintaining it with optimized power thereafter, while the piezoelectric pump adds high-frequency fine fluctuations; Operating frequency: High frequency (e.g., the piezoelectric pump's operating frequency is set in the range of 60-100Hz to simulate the rapid sucking reflex triggered by an infant); Applicable scenarios: Situations requiring rapid emptying of the breast, slow milk flow, or strong stimulation.

[0031] In this embodiment, when the real-time air pressure value reaches a preset first target air pressure threshold, such as -200 mmHg, the host obtains the operating mode command input by the user in advance or in real time. In this embodiment, the user selects low suction intensity, so the operating mode identifier corresponds to the second operating mode.

[0032] Step S12: When the working mode identifier corresponds to the second working mode, the vacuum pump is controlled to stop running and the piezoelectric pump is started to operate in the first preset mode.

[0033] In this embodiment, the current operating mode is the second (silent priority, corresponding to mode 1), and the host performs the following operations: In this embodiment, the vacuum pump is immediately stopped to eliminate this main noise source and significantly reduce the overall noise of the system. At the same time, the piezoelectric pump is started and operated in a first preset mode. The first preset mode includes controlling the piezoelectric pump to operate with specific drive parameters (such as frequency and duty cycle). Due to its low power and low noise, it can perform more precise and quiet air pressure regulation based on the negative pressure established by the vacuum pump, so that the air pressure in the inner cavity continues to decrease slowly.

[0034] like Figure 2 As shown, Figure 2 A schematic diagram of the second working mode provided in Embodiment 1 of the control method for the electric breast pump of this application; Step S121: Control the piezoelectric pump to operate with a first driving parameter to generate a periodic pulsating negative pressure in the inner cavity of the breast shield. The first driving parameter includes at least one of operating frequency, duty cycle, or driving voltage.

[0035] In this embodiment, after the piezoelectric pump is started, it initially operates with the first driving parameters. The first driving parameters include the operating frequency, duty cycle, or power. Specifically, the first driving parameters are set to an operating frequency of 20Hz, a duty cycle of 50%, and a power of 50% of the piezoelectric pump's rated power, aiming to make the internal air pressure decrease smoothly and linearly from the first target air pressure threshold of -200mmHg.

[0036] Step S122: When the current air pressure value reaches the second target air pressure threshold, adjust the driving parameters of the piezoelectric pump to switch it from the first driving parameter to the second driving parameter.

[0037] During operation, the current air pressure value inside the cavity is continuously monitored. When the current air pressure value reaches the second target air pressure threshold, the main unit adjusts the drive parameters of the piezoelectric pump to switch it from the first drive parameter to the second drive parameter. The second target air pressure threshold is set to a value between the first target air pressure threshold and the final release air pressure value, such as -180 mmHg.

[0038] In this embodiment, the second driving parameter is used to change the stimulation characteristics. Specifically, the second driving parameter is 60Hz with a duty cycle of 30%, representing 100% of the piezoelectric pump's rated power. Changing the driving parameter aims to provide a higher frequency, gentler, micro-amplitude fluctuation stimulation during the phase when the air pressure approaches the target release point, better simulating the rapid, light sucking motion of an infant at the end of sucking, thus promoting the continuation of the milk let-down reflex or milk emptying.

[0039] Step S123: After the piezoelectric pump has been running for a second preset time with the second drive parameters, if no new working mode command is obtained, the electric breast pump is controlled to enter standby mode.

[0040] After the piezoelectric pump has been running for a period of time with the second drive parameter, regardless of whether the internal air pressure has dropped to -160 mmHg, the main unit will control the piezoelectric pump to stop running and perform air pressure release to complete the current suction cycle.

[0041] After the cycle ends, the system enters a short waiting window. If no new working mode command or start signal is received after this period, for example, if the user does not perform any operation for more than 15 seconds, the host controls the electric breast pump to enter a low-power standby state.

[0042] Example 2 like Figure 3 As shown, Figure 3 This is a flowchart illustrating the control method of the electric breast pump provided in Embodiment 2 of this application.

[0043] refer to Figure 3 In this embodiment, the control method of the electric breast pump is as follows: In step S20, in response to the first mode command, the vacuum pump is controlled to operate to reduce the air pressure inside the breast shield and the real-time air pressure value inside the breast shield is monitored.

[0044] The first mode command is the pressure build-up command; in response to this command, the host drives the vacuum pump to start drawing air from the inner cavity of the breast shield to build negative pressure; during this process, the real-time air pressure value is continuously monitored by the pressure sensor set in the air path or the inner cavity of the breast shield.

[0045] In this embodiment, the vacuum pump has a rated power of 10 watts and a corresponding drive current of 500 mA. At this power, the vacuum pump can operate at maximum flow rate, causing the internal cavity pressure to rapidly decrease from atmospheric pressure to a first target pressure threshold in a short time. In this example, the first target pressure threshold is -200 mmHg.

[0046] Step S21: When the real-time air pressure value reaches the first target air pressure threshold, a working mode is determined based on a working mode command, which includes a working mode identifier. The working mode command can be entered by the user immediately or pre-configured by the user as needed before use. When the working mode command is pre-configured, the first target air pressure threshold is the condition for triggering the working mode command. In this step, if no working mode command is received within the preset window period when the air pressure in the inner cavity reaches the first target air pressure threshold, the breast pump enters a low-power standby mode.

[0047] In this embodiment, the user selects the medium gear (corresponding to the third working mode, i.e., mode 2 mentioned above).

[0048] In this embodiment, when the air pressure inside the breast shield reaches the first target air pressure threshold, the main unit reduces the vacuum pump from its initial power to a maintenance power, where the maintenance power is 40% of the initial power, and simultaneously starts the piezoelectric pump. Thereafter, the vacuum pump and piezoelectric pump primarily work together to further deepen the negative pressure to the second target air pressure value, maintain the negative pressure, and generate high-frequency micro-amplitude pressure fluctuations.

[0049] In this embodiment, the second target air pressure threshold is -250 mmHg.

[0050] In this embodiment, the vacuum pump power is reduced to a second preset power value, which can be achieved by controlling the output current of the vacuum pump through the host control. For example, the output current can be reduced to a specific first preset current value, where the first preset current value is 200 mA, in order to achieve the effect of noise reduction.

[0051] In this embodiment, the host controls the piezoelectric pump to vibrate at high frequency and with small amplitude through a pre-programmed waveform. This generates gentle and rapid pressure fluctuations within the breast pump, realistically simulating the sucking action of an infant triggering the mother's milk ejection reflex, thus improving milk extraction efficiency. The vibration frequency of the piezoelectric pump is set within the range of 10Hz to 100Hz. This frequency band simulates the biomechanical frequency at which an infant effectively stimulates nerve endings in the areola area, triggering the "milk ejection reflex." A frequency below 10Hz results in insufficient stimulation; a frequency above 100Hz fails to simulate an effective physiological sucking rhythm, losing its physiological realism.

[0052] In this embodiment, since the noise of the vacuum pump is strongly correlated with its speed and load, stable low-to-medium load operation can significantly reduce its airflow noise and mechanical vibration noise. Therefore, by having the piezoelectric pump undertake the main tasks of pressure stabilization and fluctuation absorption, the vacuum pump does not need to operate at full power, frequently start and stop, or significantly adjust its power to cope with insufficient power or minor disturbances. This allows the vacuum pump to operate at a more stable and relatively lower power level, thereby reducing its airflow noise and mechanical vibration noise.

[0053] In this embodiment, the operating noise of the piezoelectric pump is mainly a weak high-frequency buzzing sound, while the noise of the vacuum pump is mainly mid-to-low frequency wind noise and mechanical noise. The human ear is more sensitive to mid-to-low frequency noise, while high-frequency noise attenuates faster in the air. In the third operating mode, when the two pumps operate in tandem, the weak high-frequency sound of the piezoelectric pump can create an acoustic masking effect on the mid-to-low frequency noise of the vacuum pump, and change the frequency spectrum structure of the noise, making the overall listening experience more peaceful and reducing the annoying and harsh low-frequency wind noise and mechanical noise.

[0054] In this embodiment, in the third operating mode, the vacuum pump and the piezoelectric pump work together, and after testing, the overall operating noise can be reduced to below 40dB.

[0055] Step S22: When the working mode identifier corresponds to the third working mode, control the vacuum pump and piezoelectric pump to operate in a preset cooperative mode.

[0056] like Figure 4 As shown, Figure 4 A schematic diagram of the third working mode provided in Embodiment 2 of the control method for the electric breast pump of this application; Step S22 is as follows: Step S221: Start the piezoelectric pump and simultaneously reduce the output power of the vacuum pump from the initial power to the maintenance power.

[0057] Step S222: During the coordinated operation, the current air pressure value of the inner cavity is monitored in real time, and the coordinated working time of the piezoelectric pump and the vacuum pump is accumulated.

[0058] Step S223: When the third target stop condition is met, control the vacuum pump and the piezoelectric pump to stop running, and open the pressure relief passage to restore the internal cavity pressure to the ambient pressure.

[0059] In this embodiment, when the real-time air pressure value fed back by the air pressure sensor accurately reaches the second target air pressure value, and this value is stably maintained for a preset duration of 3 seconds, the host immediately performs the following operations: Send a stop command to the vacuum pump and piezoelectric pump to cut off the power supply to both pumps and terminate the pumping process; The built-in exhaust channel of the synchronous control device opens: after opening, the internal air pressure gradually rises back to normal pressure, allowing the breasts to rest and ending a sucking cycle.

[0060] Repeat the above steps to make the pressure inside the breast shield change periodically.

[0061] The beneficial effects of this application are: by adopting a heterogeneous combination of a vacuum pump and a piezoelectric pump, and by using dynamic switching logic based on a negative pressure threshold, the breast pump can simultaneously achieve efficient pressure build-up, strong suction, and quiet operation.

[0062] In another embodiment of this application, the sucking mode meets other termination conditions as follows: the host records a preset number of pressure fluctuation cycles generated by the piezoelectric pump. For example, the stimulation mode is determined to end when the piezoelectric pump completes a preset 300 effective pressure fluctuations, ensuring the number of stimulation cycles rather than just the duration.

[0063] In another embodiment of this application, the sucking mode meets other termination conditions as follows: the host monitors the user interface in real time, including a stop button or APP command. When the host receives a clear user stop signal, regardless of how long the current mode has been running, it immediately triggers the cycle end working mode, releases the pressure of the sealed negative pressure cavity through the pressure relief valve, allows outside air to enter the breast shield quickly and smoothly, and restores the air pressure inside the breast shield to atmospheric pressure, thus ending one sucking cycle.

[0064] In another embodiment of this application, the sucking mode meets other termination conditions as follows: the system continuously monitors key parameters, and if abnormal pressure is detected, such as negative pressure exceeding the safety limit, power unit overload, or milk storage container full, the main unit will actively end the current working mode, release the pressure of the sealed negative pressure cavity through the pressure relief valve, so that external air can quickly and smoothly enter the breast shield and restore the air pressure inside the breast shield to atmospheric pressure, thus ending a sucking cycle.

[0065] Furthermore, in this embodiment, the system determines whether to start the next working cycle through a multi-cycle mode set by the program. For example, in the lactation stimulation mode, the milk output rate determined by the built-in flow sensor is significantly increased, indicating that the milk let-down has been successfully triggered. The current stimulation cycle ends immediately, and the system automatically determines and enters the next long-cycle phase with the goal of efficient milk overflow.

[0066] Furthermore, in this embodiment, if it is necessary to start the next cycle, the control process will restart the vacuum pump to evacuate and rebuild the negative pressure environment, thus initiating a new cycle. For example, the program is preset to execute 6 cycles with the same parameters in a fixed cycle mode. The starting point of each new cycle is a rapid pressure-building phase dominated by the vacuum pump, thereby forming a stable and adaptively adjustable complete milk suction work cycle.

[0067] This application also proposes a control device for an electric breast pump, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of a control method for an electric breast pump. The control device for the electric breast pump operates on a computing device such as a desktop computer, a laptop, a handheld computer, or a cloud data center.

[0068] A control device for an electric breast pump, comprising: a memory; a processor; and a control program for the electric breast pump stored in the memory and executed by the processor, wherein the control program for the electric breast pump, when executed by the processor, implements the control method for the electric breast pump as described above.

[0069] The control device for an electric breast pump can operate on computing devices such as desktop computers, laptops, PDAs, and cloud servers. The control device for an electric breast pump, which can function, may include, but is not limited to, a processor and memory. Those skilled in the art will understand that the example is merely one illustration of a control device for an electric breast pump and does not constitute a limitation on such a device. It may include more or fewer components, combinations of certain components, or different components. For example, the control device for an electric breast pump may also include input / output devices, network access devices, buses, etc.

[0070] The control method of the electric breast pump is implemented by the control device of the electric breast pump. It adopts a heterogeneous combination of vacuum pump and piezoelectric pump, and through dynamic switching logic based on negative pressure threshold, it can simultaneously achieve efficient pressure build-up, strong suction and quiet operation of the breast pump.

[0071] In this embodiment, the control method of the electric breast pump stored in the memory is executed by the processor. By using a heterogeneous combination of vacuum pump and piezoelectric pump, and through dynamic switching logic based on negative pressure threshold, the breast pump can simultaneously achieve efficient pressure build-up, strong suction and quiet operation.

[0072] like Figure 5 As shown, Figure 5 This is a schematic diagram of the module structure of the control device of the electric breast pump according to an embodiment of this application.

[0073] Reference Figure 5 This application also proposes an electric breast pump, which is an integrated design including: a main unit 100, a breast shield 200, a milk storage container 300, a vacuum pump 101, and a piezoelectric pump 102. The vacuum pump 101 and the piezoelectric pump 102 are disposed inside the main unit 100. The breast shield 200 is inserted into the mounting part of the main unit 100, and the air ports of the vacuum pump 101 and the piezoelectric pump 102 are interconnected with the inner cavity of the breast shield 200. The milk storage container 300 is installed below the main unit 100 and is connected to the liquid outlet of the breast shield 200.

[0074] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A control method of an electric breast pump, characterized by, The electric breast pump comprises a main machine, a breast cup, a milk storage container, a vacuum pump and a piezoelectric pump, the vacuum pump and the piezoelectric pump are arranged in the main machine, the air port of the vacuum pump and the air port of the piezoelectric pump are connected with the inner cavity of the breast cup through an air path, and the control method comprises: in response to a first working mode instruction, controlling the vacuum pump to operate to reduce the air pressure in the inner cavity of the breast cup, and monitoring the real-time air pressure value of the inner cavity; in the case that the real-time air pressure value reaches a first target air pressure threshold, determining a working mode based on a working mode instruction, the working mode instruction comprising a working mode identifier; when the working mode identifier corresponds to a second working mode, then controlling the vacuum pump to stop operating and starting the piezoelectric pump to operate in a first preset mode; when the working mode identifier corresponds to a third working mode, controlling the vacuum pump and the piezoelectric pump to operate in a preset cooperative mode.

2. The control method according to claim 1, characterized by, The first preset mode comprises: controlling the piezoelectric pump to operate in a first driving parameter to generate a periodic pulsating negative pressure in the inner cavity of the breast cup, the first driving parameter comprising at least one of a working frequency, a duty cycle or a driving voltage.

3. The control method according to claim 2, characterized by, During the operation of the piezoelectric pump, the current air pressure value of the inner cavity is continuously monitored; when the current air pressure value reaches a second target air pressure threshold, adjusting the driving parameter of the piezoelectric pump to switch from the first driving parameter to a second driving parameter; after the piezoelectric pump operates in the second driving parameter for a second preset time length, if no new working mode instruction is obtained, then controlling the electric breast pump to enter a standby state.

4. The control method of claim 1, wherein When the working mode identifier corresponds to the third mode, controlling the vacuum pump and the piezoelectric pump to operate in a preset cooperative mode comprises: starting the piezoelectric pump, and simultaneously reducing the output power of the vacuum pump from an initial power to a maintenance power; during the cooperative operation, the current air pressure value of the inner cavity is monitored in real time, and the coordinated working time length of the piezoelectric pump and the vacuum pump is accumulated; when a third target stop condition is met, controlling the vacuum pump and the piezoelectric pump to stop operating, and opening a pressure relief path to restore the air pressure in the inner cavity to the ambient air pressure.

5. The control method of claim 4, wherein The third target stop condition comprises any one or a combination of: the cooperative working time length reaches a cooperative time length threshold; the current air pressure value reaches a third preset air pressure threshold; a stop trigger instruction sent by a user is received.

6. The control method according to claim 5, characterized by, After the vacuum pump and the piezoelectric pump stop operating, if no new working mode instruction is received, then controlling the electric breast pump to enter a standby state; if a new working mode instruction is received in the standby state, then re-executing the corresponding working mode control process according to the instruction.

7. The control method according to any one of claims 4 to 6, characterized in that, controlling the output power of the vacuum pump to reduce from an initial power to a maintenance power comprises: controlling the driving current of the vacuum pump to reduce from a first current value to a second current value, the first current value corresponding to an initial working state of the vacuum pump, and the second current value corresponding to the minimum driving current required to maintain the basic negative pressure.

8. The control method of claim 7, wherein The first preset current value is 180 to 220 mA, and the second preset power value is 10% to 50% of the rated power of the vacuum pump.

9. A control device for an electric breast pump, characterized in that The control device comprises a memory, a processor, and a breast pumping program stored in the memory and executed by the processor, and the breast pumping program, when executed by the processor, implements the control method of the electric breast pump according to any one of claims 1-8.

10. An electric breast pump, characterized in that The electric breast pump comprises a host, a breast cup, a milk storage container, a vacuum pump, and a piezoelectric pump, the host and the control device according to claim 9, the vacuum pump and the piezoelectric pump are arranged in the host, and air inlets of the vacuum pump and the piezoelectric pump are in communication with an inner cavity of the breast cup.

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