Power supply control circuit, method, storage medium, ion generator and purifier

Abstract

The present invention provides a power supply control circuit, method, device, storage medium, ion generator and purifier. The power supply control circuit includes: a high-voltage generating circuit, a current sampling circuit and a high-voltage controller; the high-voltage generating circuit is used to provide a power supply voltage for the electrostatic dust removal device of the ion generator; the current sampling circuit is used to sample the working current of the ion generator and feed back a current sampling signal to the high-voltage controller; the high-voltage controller is respectively connected to the high-voltage generating circuit and the current sampling circuit, and is used to control the high-voltage generating circuit according to the received sampling current signal so as to adjust the output voltage of the high-voltage generating circuit. The present invention can effectively control the power supply of the ion generator, achieve anti-static interference, ensure the ionization intensity of the ion generator, and improve the purification effect of the ionic purifier.

Description

Technical Field

[0001] The present invention relates to the technical field of purifiers, and particularly to a power supply control circuit, method, device, storage medium, ion generator and purifier. Background Art

[0002] At present, air purifier products on the market can be divided into two types according to the purification principle: mechanical filtration and adsorption purifiers, and electrostatic purifiers. In particular, the working principle of an electrostatic air purifier is to charge pollutants in the air through static electricity, and then use a dust collection device to capture and adsorb the pollutants carrying charged particles, ultimately achieving the effect of purifying the air. Compared with other purifiers, electrostatic purifiers have the characteristics of low energy consumption and high dust removal efficiency, so they are favored by users.

[0003] The core unit of an electrostatic air purifier is an ion generator, and its control methods include voltage feedback method and non-feedback method. Some also come with additional protection functions such as overcurrent protection unit and overtemperature protection unit. At the same time, the ion generator also faces a thorny problem: under the influence of the product usage environment, for example, in winter, especially in northern regions, static electricity is abundant and difficult to dissipate. Even under the same voltage conditions, the ion generator controlled by the voltage feedback method will have a reduction in ions generated by the ion generation unit and a consequent decrease in current due to the influence of static electricity. Therefore, the CADR (Clean Air Delivery Rate) of the air purifier decreases significantly, and the purification effect cannot be effectively guaranteed. Summary of the Invention

[0004] In view of the above problems, the present invention provides a power supply control circuit, method, device, storage medium, ion generator and purifier to solve the problem that the existing power supply control circuit of an ion air purifier cannot achieve anti-static interference, resulting in a reduction in ions generated by the ion generator, a decrease in current, and thus a reduction in the CADR of the whole machine.

[0005] In one aspect of the present invention, a power supply control circuit is provided, including a high-voltage generation circuit, a current sampling circuit and a high-voltage controller;

[0006] The high-voltage generation circuit is used to provide a supply voltage for the electrostatic dust removal device of the ion generator;

[0007] The current sampling circuit is used to sample the working current of the ion generator and feed back the current sampling signal to the high-voltage controller;

[0008] The high-voltage controller is respectively connected to the high-voltage generation circuit and the current sampling circuit, and is used to control the high-voltage generation circuit according to the received sampling current signal to adjust the output voltage of the high-voltage generation circuit.

[0009] Optionally, the power supply control circuit further includes a voltage sampling circuit, which is connected to the high-voltage controller and is used to sample the operating voltage of the ion generator and feedback a voltage sampling signal to the high-voltage controller;

[0010] The high-voltage controller is further used to control the high-voltage generating circuit according to the received voltage sampling signal to adjust the output voltage of the high-voltage generating circuit.

[0011] Optionally, the power supply control circuit further includes an overcurrent protection circuit, which is respectively connected to the high-voltage controller and the high-voltage generating circuit and is used to perform overcurrent protection on the high-voltage generating circuit when the operating current is overcurrent.

[0012] Optionally, the high-voltage generating circuit includes a switching circuit, a step-up transformer and a voltage multiplier rectification module. The switching circuit is connected to the high-voltage controller, the step-up transformer is connected to the switching circuit and is used to convert a low-voltage DC power supply into a high-voltage AC power supply, and the voltage multiplier rectification module is connected to the step-up transformer and is used to rectify the high-voltage AC power supply and output a DC voltage to the electrostatic dust removal device.

[0013] Another aspect of the present invention provides a power supply control method based on the power supply control circuit as described above. The method includes:

[0014] Obtain the operating current of the ion generator;

[0015] Judge whether the operating current is within a preset target current range;

[0016] If the operating current is not within the target current range, adjust the power supply voltage of the ion generator so that the operating current of the ion generator remains within the target current range.

[0017] Optionally, the method further includes:

[0018] Judge whether the operating current is greater than a preset protection current threshold;

[0019] If the operating current is greater than the preset protection current threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0020] Optionally, the method further includes:

[0021] Obtain the operating voltage of the ion generator;

[0022] Determine whether the operating voltage is greater than a preset protection voltage threshold;

[0023] If the operating voltage is greater than the preset protection voltage threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the supply voltage of the ion generator according to the adjusted target current range.

[0024] Optionally, adjusting the supply voltage of the ion generator includes:

[0025] Determine whether the operating current is lower than the minimum threshold of the target current range;

[0026] If the operating current is lower than the minimum threshold of the target current range, calculate a first difference between the operating current and the minimum threshold of the target current range, and a second difference between the operating current and the maximum threshold of the target current range;

[0027] Determine a target current increase amount according to the first difference and the second difference;

[0028] Adjust the supply voltage of the ion generator according to the target current increase amount.

[0029] Optionally, adjusting the supply voltage of the ion generator includes:

[0030] Determine whether the operating current is higher than the maximum threshold of the target current range;

[0031] If the operating current is higher than the maximum threshold of the target current range, calculate a third difference between the operating current and the maximum threshold of the target current range, and a fourth difference between the operating current and the minimum threshold of the target current range;

[0032] Determine a target current decrease amount according to the third difference and the fourth difference;

[0033] Adjust the supply voltage of the ion generator according to the target current decrease amount.

[0034] In a third aspect of the present invention, there is also provided a power supply control device based on the power supply control circuit as described above, characterized in that the device includes:

[0035] A current acquisition module for acquiring the operating current of the ion generator;

[0036] A first judgment module for judging whether the operating current is within a preset target current range;

[0037] A control module, configured to adjust the power supply voltage of the ion generator when the working current is not within the target current range, so that the working current of the ion generator is maintained within the target current range.

[0038] Optionally, the device further includes:

[0039] A second judgment module, configured to judge whether the working current is greater than a preset protection current threshold;

[0040] A first adjustment module, configured to, when the judgment result of the second judgment module is that the working current is greater than the preset protection current threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy;

[0041] Correspondingly, the control module is further configured to adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0042] Optionally, the device further includes:

[0043] A voltage acquisition module, configured to acquire the working voltage of the ion generator;

[0044] A third judgment module, configured to judge whether the working voltage is greater than a preset protection voltage threshold;

[0045] A second adjustment module, configured to, when the judgment result of the third judgment module is that the working voltage is greater than the preset protection voltage threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy;

[0046] Correspondingly, the control module is further configured to adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0047] Optionally, the control module includes:

[0048] A judgment unit, configured to judge whether the working current is lower than the minimum threshold of the target current range;

[0049] A calculation unit, configured to, when the judgment result of the judgment unit is that the working current is lower than the minimum threshold of the target current range, calculate a first difference between the working current and the minimum threshold of the target current range, and a second difference between the working current and the maximum threshold of the target current range;

[0050] A determination unit, configured to determine a target current increase amount according to the first difference and the second difference;

[0051] A control unit, configured to adjust the power supply voltage of the ion generator according to the target current increase amount.

[0052] Optionally, the determination unit is further configured to determine whether the working current is higher than the maximum threshold of the target current range;

[0053] The calculation unit is further configured to calculate a third difference between the working current and the maximum threshold of the target current range, and a fourth difference between the working current and the minimum threshold of the target current range when the determination result of the determination unit is that the working current is higher than the maximum threshold of the target current range;

[0054] The determination unit is further configured to determine a target current reduction amount according to the third difference and the fourth difference;

[0055] The control unit is further configured to adjust the power supply voltage of the ion generator according to the target current reduction amount.

[0056] In addition, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above-mentioned method are implemented.

[0057] In addition, the present invention further provides an ion generator, including an electrostatic dust removal device and the above-mentioned power supply control circuit. The high-voltage controller in the power supply control circuit includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the above-mentioned method are implemented.

[0058] In addition, the present invention further provides a purifier, including the above-mentioned ion generator.

[0059] The power supply control circuit, method, device, storage medium, ion generator and purifier provided by the embodiments of the present invention can keep the working current of the ion generator within the target current range, ensure the ionization intensity of the ion generator, effectively avoid the influence of the external environment on the ion generation device, and thus ensure the stability of the overall CADR of the ion generator.

[0060] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically exemplified below. Description of the Drawings

[0061] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0062] Figure 1 is a schematic structural diagram of a power supply control circuit for an ion generator according to an embodiment of the present invention Figure 1 ;

[0063] Figure 2 is a schematic structural diagram of a power supply control circuit for an ion generator according to an embodiment of the present invention Figure 2 ;

[0064] Figure 3 is a schematic structural diagram of a power supply control circuit for an ion generator according to a specific embodiment of the present invention;

[0065] Figure 4 is a schematic flowchart of a power supply control method according to an embodiment of the present invention;

[0066] Figure 5 is a schematic structural diagram of a power supply control device according to an embodiment of the present invention. Detailed Embodiments

[0067] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0068] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined.

[0069] Figure 1 is a schematic structural diagram of a power supply control circuit for an ion generator according to an embodiment of the present invention. As Figure 1As shown in the figure, a power supply control circuit for an ion generator provided in this embodiment includes a high-voltage generation circuit 10, a current sampling circuit 20, and a high-voltage controller 30. The high-voltage generation circuit 10 is used to provide a power supply voltage for the electrostatic dust removal device of the ion generator. The current sampling circuit 20 is used to sample the working current of the ion generator and feed the current sampling signal back to the high-voltage controller 30. The high-voltage controller 30 is connected to the high-voltage generation circuit 10 and the current sampling circuit 20 respectively, and is used to control the high-voltage generation circuit 10 according to the received sampling current signal to adjust the output voltage of the high-voltage generation circuit 10.

[0070] Specifically, the high-voltage controller 30 controls the working state of the high-voltage generation circuit 10 to change the output voltage of the high-voltage generation circuit 10. The voltage generated by the high-voltage generation circuit 10 is supplied to the electrostatic dust removal device, and the electrostatic dust removal device uses a high-voltage electric field to ionize and charge pollutants in the air. The current acquisition circuit 20 acquires the real-time working current of the ion generator and feeds the acquired real-time working current data back to the high-voltage controller 30. The high-voltage controller 30 performs corresponding control on the high-voltage generation circuit 10 according to the fed-back real-time working current data.

[0071] In another embodiment of the present invention, as Figure 2 shown, the power supply control circuit may further include a voltage sampling circuit 50. The voltage sampling circuit 50 is connected to the high-voltage controller 30 and is used to sample the working voltage of the ion generator and feed the voltage sampling signal back to the high-voltage controller 30. The high-voltage controller 30 controls the high-voltage generation circuit 10 according to the fed-back voltage sampling signal to adjust the output voltage of the ion generator.

[0072] Specifically, if the real-time working voltage is too high and exceeds the maximum voltage value allowed by the ion generator, the high-voltage generation circuit 10 is controlled to reduce the output voltage to avoid danger caused by insufficient insulation strength of the ion generator and protect the safety of electrical appliances and personnel. On the other hand, if the real-time working voltage is too low, the high-voltage generation circuit 10 is controlled to increase the output voltage to ensure the operating power of the ion generator.

[0073] In one embodiment of the present invention, as Figure 2 shown, the power supply control circuit further includes an overcurrent protection circuit 40. The overcurrent protection circuit 40 is connected to the high-voltage controller 30 and the high-voltage generation circuit 10 respectively. When the overcurrent protection circuit 40 detects that the working current of the ion generator is too high and exceeds the maximum current value allowed by the ion generator, overcurrent protection is performed, and the high-voltage generation circuit 10 is hardware-shut down to avoid damage to the ion generator due to overheating of the circuit.

[0074] In one embodiment of the present invention, as Figure 3As shown, the high-voltage generating circuit 10 includes a switching circuit 101, a step-up transformer 102, and a voltage multiplier rectification module 103. The switching circuit 101 is connected to the high-voltage controller 30, and the step-up transformer 102 is connected to the switching circuit 101 for converting a low-voltage DC power supply into a high-voltage AC power supply. The voltage multiplier rectification module 103 is connected to the step-up transformer 102 for rectifying the high-voltage AC power supply and outputting a DC voltage to the electrostatic dust removal device.

[0075] Specifically, the high-voltage controller 30 includes an MCU main control module. The MCU main control module is used to output a PWM drive signal to the switching circuit 101 to drive the switching circuit 101 to perform a switching action, and invert the DC voltage into an AC voltage via the step-up transformer 102. Optionally, parallel MOS transistors can be used as switching transistors to connect to the MCU main control module to receive the PWM drive signal and perform conduction or cutoff actions.

[0076] Furthermore, the MCU main control module can adjust the conduction time of the switching circuit 101 by changing the duty cycle of the PWM drive signal, thereby controlling the step-up transformer 102 to convert the low-voltage power supply into high-voltage power supplies with different values. The voltage multiplier rectification module 103 is connected to the step-up transformer 102 to convert the high-voltage AC power supply into a higher DC voltage and deliver it to the electrostatic dust removal device.

[0077] In an embodiment of the present invention, the high-voltage generating circuit 10 further includes a capacitor 104 connected in parallel at the input end of the step-up transformer.

[0078] Specifically, the capacitor 104 is used for energy storage. When the switching circuit 101 is conducting, the capacitor 104 discharges.

[0079] In a specific embodiment of the present invention, the current sampling circuit 20 samples the current of the high-voltage generating circuit 10 and feeds it back to the high-voltage controller 30. The high-voltage controller 30 adjusts the PWM drive signal according to the feedback to control the output voltage of the high-voltage generating circuit 10 and stabilize the working current of the ion generator. The current value in the output loop. On the other hand, the voltage sampling circuit 50 samples the voltage of the high-voltage generating circuit 10 and feeds it back to the high-voltage controller 30. The high-voltage controller 30 adjusts the PWM drive signal according to the feedback to control the output voltage of the high-voltage generating circuit 10 and stabilize the working voltage of the ion generator.

[0080] The power supply control circuit provided by the embodiment of the present invention realizes real-time monitoring of the working current and working voltage of the ion generator through a current sampling circuit and a voltage sampling circuit, and controls the output voltage of the ion generator according to the monitoring data, so that its working current and / or working voltage are kept stable, ensuring the ionization intensity of the ion generator while preventing the ion generator from operating overvoltage or undervoltage, and having the characteristics of simple structure, easy implementation and high reliability.

[0081] Figure 4 The flowchart of the power supply control method according to an embodiment of the present invention is schematically shown. The power supply control method proposed by the embodiment of the present invention realizes power supply control based on the power supply control circuit. Referring to Figure 4 , the power supply control method proposed by the embodiment of the present invention specifically includes steps S11 to S13 as follows:

[0082] S11. Obtain the working current of the ion generator.

[0083] S12. Determine whether the working current is within a preset target current range.

[0084] S13. If the working current is not within the target current range, adjust the power supply voltage of the ion generator so that the working current of the ion generator is kept within the target current range.

[0085] In this embodiment, in order to maintain stable operation and ensure ionization intensity, the high-voltage electric field provided by the ion generator needs to be maintained within a certain range. Therefore, according to the ionization intensity required by the ion generator, the working current value of the current ion generator will also be maintained within the corresponding threshold range, which is preset as the target current range.

[0086] Specifically, when the ion generator is running, the working current of the ion generator is obtained in real time. It can be understood that in an ideal state, when the load remains unchanged, only the corresponding power supply voltage needs to be provided according to the preset target current range. However, in practical applications, affected by static electricity, even under the same voltage conditions, the ions generated by the ion generator will decrease relatively and the current will drop accordingly. Therefore, it is necessary to monitor the working current of the ion generator to adjust the output voltage of the ion generator in time when the ionization intensity of the ion generator weakens or becomes too strong, so that its ionization intensity is kept within a reasonable range. Especially when applied in an electrostatic air purifier, it is necessary to prevent the ionization intensity of the ion generator from weakening, which will cause a significant reduction in the CADR of the air purifier.

[0087] Based on this, when the obtained working current of the ion generator is not within the preset target current range, the power supply voltage of the ion generator is adjusted so that the working current of the ion generator is restored and kept within the target current range.

[0088] The power supply control method provided by the embodiment of the present invention can effectively control the output voltage according to the actual working current of the ion generator, ensure the ionization intensity of the ion generator, and improve the anti-interference ability (especially the electrostatic effect).

[0089] In one embodiment of the present invention, the method further specifically includes the following steps:

[0090] Judge whether the working current is greater than a preset protection current threshold;

[0091] If the working current is greater than the preset protection current threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0092] In this embodiment, to protect the circuit safety of the ion generator, the maximum current value allowed by the circuit is selected as the preset protection current threshold. Specifically, compare the obtained working current of the ion generator with the preset protection current threshold. If the working current is greater than the preset protection current threshold, it indicates that the power supply voltage provided according to the current target current range is too high and the working circuit has an overcurrent. Therefore, to avoid the situation of excessive current and circuit overheating and burning again, adjust the preset target current range of the current ion generator, reduce the target current value, and generate a power supply voltage according to the adjusted target current range with a lower threshold to protect the working circuit of the ion generator.

[0093] More specifically, when adjusting the preset target current range, the minimum threshold and the maximum threshold of the target current range can be reduced by two same or different values respectively, and the values can be preset values or obtained by the control program according to a preset operation logic. It can be understood that when the detected working current is too small, the minimum threshold and the maximum threshold of the target current range can be increased accordingly.

[0094] In another embodiment of the present invention, the method further specifically includes the following steps:

[0095] Obtain the working voltage of the ion generator;

[0096] Judge whether the working voltage is greater than a preset protection voltage threshold;

[0097] If the working voltage is greater than the preset protection voltage threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0098] In this embodiment, to protect the circuit safety of the ion generator, the maximum voltage value allowed by the circuit is selected as the preset protection voltage threshold. Specifically, the operating voltage of the ion generator obtained is compared with the preset protection voltage threshold. If the operating voltage is greater than the preset protection voltage threshold, it indicates that the supply voltage provided according to the current target current range is too high, and the ion generator may not be able to withstand the excessive operating voltage due to insufficient insulation strength, resulting in equipment abnormalities or other hazards. Therefore, to avoid repeated occurrences of abnormalities such as overvoltage, the preset target current range of the current ion generator is adjusted, the target current value is reduced, and the supply voltage is generated according to the adjusted target current range with a lower threshold to protect the equipment safety of the ion generator.

[0099] Similarly, when adjusting the preset target current range, the minimum threshold and the maximum threshold of the target current range can be reduced by two same or different values respectively. The selection of the values can also be preset values or can be obtained by the control program according to the preset operation logic. It can be understood that when the detected operating voltage is too low, the minimum threshold and the maximum threshold of the target current range can be increased correspondingly to avoid the ion generator from working under repeated and continuous undervoltage.

[0100] In a specific embodiment of the present invention, the adjustment of the supply voltage of the ion generator in step S13 specifically includes the following steps S131 to S134 not shown in the drawings:

[0101] S131. Determine whether the working current is lower than the minimum threshold of the target current range;

[0102] S132. If the working current is lower than the minimum threshold of the target current range, calculate the first difference between the working current and the minimum threshold of the target current range, and the second difference between the working current and the maximum threshold of the target current range;

[0103] S133. Determine the target current increase amount according to the first difference and the second difference;

[0104] S134. Adjust the supply voltage of the ion generator according to the target current increase amount.

[0105] In this specific embodiment, after it is determined that the working current of the ion generator is not within the preset target current range, it is further determined whether the working current is too low and does not reach the minimum threshold of the target current range. If so, the differences between the working current and the minimum and maximum thresholds of the target current range are calculated respectively to obtain the specific difference data of the actual working current of the ion generator being lower than the target current under the current power supply voltage condition, so as to facilitate determining, based on the difference data, the amount of current that needs to be increased for the current ion generator to meet the ionization intensity requirement - the target current increase amount, and then increasing the power supply voltage of the ion generator according to the target current increase amount.

[0106] In another specific embodiment of the present invention, the adjustment of the power supply voltage of the ion generator in step S13 specifically includes the following steps S131' to S134' not shown in the drawings:

[0107] S131'. Determine whether the working current is higher than the maximum threshold of the target current range;

[0108] S132'. If the working current is higher than the maximum threshold of the target current range, calculate the third difference between the working current and the maximum threshold of the target current range, and the fourth difference between the working current and the minimum threshold of the target current range;

[0109] S133'. Determine the target current reduction amount based on the third difference and the fourth difference;

[0110] S134'. Adjust the power supply voltage of the ion generator according to the target current reduction amount.

[0111] In this specific embodiment, after it is determined that the working current of the ion generator is not within the preset target current range, it is further determined whether the working current is too high and exceeds the maximum threshold of the target current range. If so, the differences between the working current and the minimum and maximum thresholds of the target current range are calculated respectively to obtain the specific difference data of the actual working current of the ion generator being higher than the target current under the current power supply voltage condition, so as to facilitate determining, based on the difference data, the amount of current that needs to be reduced for the current ion generator to control the current ionization intensity - the target current reduction amount, and then reducing the power supply voltage of the ion generator according to the target current reduction amount.

[0112] For method embodiments, for the sake of simplicity, they are all described as a series of combinations of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the described order of actions, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0113] Figure 5 The structural schematic diagram of a power supply control device according to an embodiment of the present invention is schematically shown. Referring to Figure 5 , the power supply control device according to the embodiment of the present invention specifically includes a current acquisition module 201, a first judgment module 202, and a control module 203, where:

[0114] The current acquisition module 201 is used to acquire the working current of the ion generator;

[0115] The first judgment module 202 is used to judge whether the working current is within a preset target current range;

[0116] The control module 203 is used to adjust the power supply voltage of the ion generator when the working current is not within the target current range, so that the working current of the ion generator remains within the target current range.

[0117] In an alternative embodiment of the present invention, the device further includes a second judgment module and a first adjustment module not shown in the drawings, where:

[0118] The second judgment module is used to judge whether the working current is greater than a preset protection current threshold;

[0119] The first adjustment module is used to reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy when the judgment result of the second judgment module is that the working current is greater than the preset protection current threshold;

[0120] Correspondingly, the control module 203 is further used to adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0121] In an alternative embodiment of the present invention, the device further includes a voltage acquisition module, a third judgment module, and a second adjustment module not shown in the drawings, where:

[0122] The voltage acquisition module is used to acquire the working voltage of the ion generator;

[0123] The third judgment module is used to judge whether the working voltage is greater than a preset protection voltage threshold;

[0124] The second adjustment module is configured to, when the judgment result of the third judgment module is that the working voltage is greater than the preset protection voltage threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy.

[0125] Correspondingly, the control module 203 is further configured to adjust the power supply voltage of the ion generator according to the adjusted target current range.

[0126] In an optional embodiment of the present invention, the control module 203 includes a judgment unit, a calculation unit, a determination unit, and a control unit, where:

[0127] The judgment unit is configured to judge whether the working current is lower than the minimum threshold of the target current range.

[0128] The calculation unit is configured to, when the judgment result of the judgment unit is that the working current is lower than the minimum threshold of the target current range, calculate a first difference between the working current and the minimum threshold of the target current range, and a second difference between the working current and the maximum threshold of the target current range.

[0129] The determination unit is configured to determine a target current increase amount according to the first difference and the second difference.

[0130] The control unit is configured to adjust the power supply voltage of the ion generator according to the target current increase amount.

[0131] In an optional embodiment of the present invention, the judgment unit is further configured to judge whether the working current is higher than the maximum threshold of the target current range.

[0132] The calculation unit is further configured to, when the judgment result of the judgment unit is that the working current is higher than the maximum threshold of the target current range, calculate a third difference between the working current and the maximum threshold of the target current range, and a fourth difference between the working current and the minimum threshold of the target current range.

[0133] The determination unit is further configured to determine a target current decrease amount according to the third difference and the fourth difference.

[0134] The control unit is further configured to adjust the power supply voltage of the ion generator according to the target current decrease amount.

[0135] For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For related parts, please refer to the partial description of the method embodiment.

[0136] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0137] The power supply control circuit, method, device, storage medium, ion generator and purifier provided by the embodiments of the present invention can keep the working current of the ion generator within the target current range, ensure the ionization intensity of the ion generator, effectively avoid the influence of the external environment on the ion generating device, and thus ensure the stability of the overall CADR of the ion generator.

[0138] In addition, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the method described above are implemented.

[0139] In this embodiment, if the modules / units integrated in the power supply control device are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above embodiment methods of the present invention, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0140] The ion generator provided by an embodiment of the present invention includes an electrostatic dust removal device and the power supply control circuit as described above. The high-voltage controller in the power supply control circuit includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps in the above-described embodiments of each power supply control method are implemented. For example Figure 4 S11 to S13 shown. Alternatively, when the processor executes the computer program, the functions of each module / unit in the above-described embodiments of each power supply control device are implemented. For example Figure 5 the current acquisition module 201, the first determination module 202, and the control module 203 shown.

[0141] Exemplarily, the computer program may be divided into one or more modules / units. The one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the power supply control device. For example, the computer program may be divided into the current acquisition module 201, the first determination module 202, and the control module 203.

[0142] The processor may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor is the voltage control center and connects various parts of the entire ion generator using various interfaces and lines.

[0143] The memory can be used to store the computer programs and / or modules. By running or executing the computer programs and / or modules stored in the memory, and by invoking the data stored in the memory, the processor can implement various functions of the ion generator. The memory may mainly include a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0144] In addition, an embodiment of the present invention further provides a purifier, and the purifier includes the ion generator as described above.

[0145] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply control circuit, characterized in that, It includes a high-voltage generating circuit, a current sampling circuit, and a high-voltage controller; The high-voltage generating circuit is used to provide a power supply voltage for the electrostatic dust removal device of the ion generator; The current sampling circuit is used to sample the operating current of the ion generator and feedback the current sampling signal to the high-voltage controller; The high-voltage controller is respectively connected to the high-voltage generating circuit and the current sampling circuit, and is used to control the high-voltage generating circuit according to the received current sampling signal to adjust the output voltage of the high-voltage generating circuit; When adjusting the output voltage of the high-voltage generating circuit, it is judged whether the operating current is lower than the minimum threshold of the target current range and whether it is higher than the maximum threshold of the target current range; If the operating current is lower than the minimum threshold of the target current range, calculate the first difference between the operating current and the minimum threshold of the target current range, and the second difference between the operating current and the maximum threshold of the target current range; determine the target current increase amount according to the first difference and the second difference; Adjust the power supply voltage of the ion generator according to the target current increase amount; If the operating current is higher than the maximum threshold of the target current range, calculate the third difference between the operating current and the maximum threshold of the target current range, and the fourth difference between the operating current and the minimum threshold of the target current range; determine the target current decrease amount according to the third difference and the fourth difference; adjust the power supply voltage of the ion generator according to the target current decrease amount.

2. The power supply control circuit according to claim 1, characterized in that, It further includes a voltage sampling circuit, and the voltage sampling circuit is connected to the high-voltage controller and is used to sample the operating voltage of the ion generator and feedback the voltage sampling signal to the high-voltage controller; The high-voltage controller is further used to control the high-voltage generating circuit according to the received voltage sampling signal to adjust the output voltage of the high-voltage generating circuit.

3. The power supply control circuit according to claim 1, characterized in that, It further includes an overcurrent protection circuit, and the overcurrent protection circuit is respectively connected to the high-voltage controller and the high-voltage generating circuit and is used to perform overcurrent protection on the high-voltage generating circuit when the operating current is overcurrent.

4. The power supply control circuit according to claim 1, characterized in that, The high-voltage generating circuit includes a switching circuit, a step-up transformer, and a voltage multiplier rectification module. The switching circuit is connected to the high-voltage controller, the step-up transformer is connected to the switching circuit and is used to convert a low-voltage DC power supply into a high-voltage AC power supply, and the voltage multiplier rectification module is connected to the step-up transformer and is used to rectify the high-voltage AC power supply and output a DC voltage to the electrostatic dust removal device.

5. A power supply control method based on the power supply control circuit according to any one of claims 1-4, characterized in that, The method includes: Obtain the operating current of the ion generator; Judge whether the operating current is within a preset target current range; If the operating current is not within the target current range, adjust the power supply voltage of the ion generator so that the operating current of the ion generator remains within the target current range; Adjusting the power supply voltage of the ion generator includes: Determine whether the working current is lower than the minimum threshold of the target current range and whether it is higher than the maximum threshold of the target current range; If the working current is lower than the minimum threshold of the target current range, calculate a first difference between the working current and the minimum threshold of the target current range, and a second difference between the working current and the maximum threshold of the target current range; determine a target current increase amount according to the first difference and the second difference; adjust the supply voltage of the ion generator according to the target current increase amount; If the working current is higher than the maximum threshold of the target current range, calculate a third difference between the working current and the maximum threshold of the target current range, and a fourth difference between the working current and the minimum threshold of the target current range; determine a target current decrease amount according to the third difference and the fourth difference; adjust the supply voltage of the ion generator according to the target current decrease amount.

6. The power supply control method according to claim 5, characterized in that, The method further includes: Determine whether the working current is greater than a preset protection current threshold; If the working current is greater than the preset protection current threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the supply voltage of the ion generator according to the adjusted target current range.

7. The power supply control method according to claim 5, characterized in that, The method further includes: Obtain the working voltage of the ion generator; Determine whether the working voltage is greater than a preset protection voltage threshold; If the working voltage is greater than the preset protection voltage threshold, reduce the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy, and adjust the supply voltage of the ion generator according to the adjusted target current range.

8. A power supply control device, characterized in that, The device includes: A current acquisition module for acquiring the working current of the ion generator; A first judgment module for judging whether the working current is within a preset target current range; A control module for adjusting the supply voltage of the ion generator when the working current is not within the target current range, so that the working current of the ion generator remains within the target current range; The control module includes: A judgment unit for judging whether the working current is lower than the minimum threshold of the target current range and whether it is higher than the maximum threshold of the target current range; A calculation unit for calculating a first difference between the working current and the minimum threshold of the target current range, and a second difference between the working current and the maximum threshold of the target current range when the judgment result of the judgment unit is that the working current is lower than the minimum threshold of the target current range, and calculating a third difference between the working current and the maximum threshold of the target current range, and a fourth difference between the working current and the minimum threshold of the target current range when the judgment result of the judgment unit is that the working current is higher than the maximum threshold of the target current range; A determination unit for determining a target current increase amount according to the first difference and the second difference, and determining a target current decrease amount according to the third difference and the fourth difference; A control unit for adjusting the supply voltage of the ion generator according to the target current increase amount and the target current decrease amount.

9. The power supply control device according to claim 8, wherein, The device further includes: A second judgment module for judging whether the working current is greater than a preset protection current threshold; A first adjustment module for, when the judgment result of the second judgment module is that the working current is greater than the preset protection current threshold, reducing the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy; Correspondingly, the control module is further configured to adjust the supply voltage of the ion generator according to the adjusted target current range.

10. The power supply control device according to claim 8, wherein, The device further includes: A voltage acquisition module for acquiring the working voltage of the ion generator; A third judgment module for judging whether the working voltage is greater than a preset protection voltage threshold; A second adjustment module for, when the judgment result of the third judgment module is that the working voltage is greater than the preset protection voltage threshold, reducing the minimum threshold and the maximum threshold of the target current range according to a preset adjustment strategy; Correspondingly, the control module is further configured to adjust the supply voltage of the ion generator according to the adjusted target current range.

11. A computer-readable storage medium, on which a computer program is stored, wherein, When the program is executed by a processor, the steps of the method according to any one of claims 5-7 are implemented.

12. An ion generator, comprising an electrostatic dust removal device and a power supply control circuit according to any one of claims 1-4, wherein, The high-voltage controller in the power supply control circuit includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the method according to any one of claims 5-7 are implemented.

13. A purifier, wherein, Including the ion generator according to claim 12.

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