Air purification device and vehicle

Abstract

The utility model relates to the technical field of air purification, and discloses an air purification device and a vehicle, and the air purification device is arranged at a position associated with an air inlet of an air conditioner of the vehicle; the air purification device carries out purification operation on air passing through an air inlet of an air conditioner of the vehicle, so that air entering a cabin of the vehicle is purified air obtained through purification operation, and the purification operation comprises the step of carrying out electrostatic loading on the air passing through the air inlet of the air conditioner of the vehicle. The air purification device is arranged at the position associated with the air inlet of the air conditioner of the vehicle, and after air passes through the air inlet of the air conditioner and before the air enters a cabin of the vehicle, electrostatic loading purification operation can be carried out on the air in advance; the air entering the cabin of the vehicle is purified air obtained through purification operation, so that a user in the cabin is prevented from being in contact with air with poor air quality in the whole process, the body health of the user is guaranteed, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air purification technical field, concretely relates to air purification device and vehicle. BACKGROUND

[0002] Air purification is an important means to improve air quality, protect health and improve user experience. The existing air purifier generally purifies air when the air quality in the vehicle is poor. Before the purification is completed, the user has inhaled air of poor quality, which is not conducive to the user's health.

[0003] Therefore, how to avoid the user inhaling air of poor quality in the vehicle has become a problem to be solved. INVENTION CONTENTS

[0004] Therefore, the utility model provides an air purification device and vehicle to solve the problem that the air purifier in the prior art can easily cause the user to inhale air of poor quality.

[0005] In a first aspect, the utility model provides an air purification device applied to a vehicle, which is arranged at a position associated with an air inlet of an air conditioner of the vehicle.

[0006] The air purification device performs a purification operation on air passing through the air inlet of the air conditioner of the vehicle, so that the air entering the cabin of the vehicle is purified air obtained through the purification operation. The purification operation includes: performing electrostatic loading on the air passing through the air inlet of the air conditioner of the vehicle.

[0007] Beneficial effects: The air purification device of the present application is arranged at a position associated with the air inlet of the air conditioner of the vehicle. After the air passes through the air inlet of the air conditioner and before it enters the cabin of the vehicle, the air can be subjected to the purification operation of electrostatic loading in advance, so that the air entering the cabin of the vehicle is purified air obtained through the purification operation, thereby avoiding the user in the cabin from contacting air of poor quality throughout the process, which is conducive to protecting the user's health and improving the user experience.

[0008] In an optional embodiment, the air inlet of the air conditioner includes an inner circulation air inlet and an outer circulation air inlet, wherein the inner circulation air inlet is connected with an inner circulation air inlet pipeline, the outer circulation air inlet is connected with an outer circulation air inlet pipeline, and the inner circulation air inlet pipeline and the outer circulation air inlet pipeline are respectively connected with an air conditioner filter core through a main pipeline.

[0009] The air purification device is arranged at the main pipeline.

[0010] Alternatively, a plurality of air purification devices are respectively arranged in the inner circulation air inlet pipeline and the outer circulation air inlet pipeline.

[0011] Beneficial effects: the air purification device is arranged at the main pipeline of the air conditioner, or the air purification device is arranged at the outer circulation air inlet pipeline and the inner circulation air inlet pipeline of the air conditioner respectively, so that the air is purified after passing through the air inlet, and the purified air enters the cabin of the vehicle.

[0012] In an optional embodiment, the air purification device comprises a corona electrode.

[0013] An electrostatic field is formed between the corona electrode and the dust collection electrode formed by the power supply of the vehicle.

[0014] Beneficial effects: the high-voltage direct current output by the air purification device is used to form a corona electrode, and an electrostatic field is formed between the corona electrode and the dust collection electrode formed by the power supply of the vehicle, so that the air is electrostatically loaded after entering the air inlet of the air conditioner and before entering the cabin of the vehicle, and the air pollutants with static electricity are more easily filtered by the air conditioner, improving the filtering effect. In this way, the air entering the cabin of the vehicle is purified air, avoiding the user inhaling air with poor air quality, not only ensuring the health of the user, but also improving the user's experience of the product.

[0015] In an optional embodiment, the air purification device further comprises a DC / AC circuit, a boost circuit and a rectifier circuit.

[0016] The DC / AC circuit is used to convert the second power supply provided by the vehicle to the air purification device from direct current to alternating current, the boost circuit is used to convert the alternating current output by the DC / AC circuit into high-voltage alternating current, and the rectifier circuit is used to convert the high-voltage alternating current output by the boost circuit into high-voltage direct current, which forms a corona electrode.

[0017] The first power supply of the vehicle is grounded to form a dust collection electrode.

[0018] Beneficial effects: the DC / AC circuit, the boost circuit and the rectifier circuit are used to sequentially perform DC / AC conversion, boosting and rectification on the second power supply provided by the vehicle to the air purification device, so that the high-voltage direct current output by the rectifier circuit serves as the corona electrode of the air purification device. Moreover, the first power supply of the vehicle is grounded to form a dust collection electrode, and an electrostatic field is formed between the corona electrode and the dust collection electrode, thereby electrostatically loading the air passing through the air inlet of the air conditioner of the vehicle and improving the filtering efficiency of the air conditioner.

[0019] In an optional embodiment, the DC / AC circuit comprises a full-bridge inverter circuit, a first triode, a second triode, a third resistor, a fourth resistor, a first inverter chip, a second inverter chip, a third inverter chip, a fourth inverter chip, a voltage stabilizer and a fourth capacitor.

[0020] The second power supply is connected with the first end of the second inverter chip through the first transistor and the first inverter chip in sequence, and the first end of the second inverter chip is connected with the control end of the full-bridge inverter circuit and the second power supply through the second transistor.

[0021] The second end of the second inverter chip is connected with the voltage stabilizer, the third end of the second inverter chip is connected with the first end of the third inverter chip and the first end of the fourth capacitor respectively, the second end of the third inverter chip is connected with the first end of the fourth inverter chip and the first end of the fourth resistor respectively, and the second end of the fourth inverter chip is connected with the second end of the fourth resistor and the second end of the fourth capacitor through the third resistor.

[0022] Beneficial effect: the fourth capacitor, the third resistor and the fourth resistor in the application constitute an RC charging and discharging circuit, the RC charging and discharging circuit is connected with the second transistor through the second inverter chip, the second transistor is connected with the control end of the full-bridge inverter circuit, the third resistor and the fourth resistor affect the charging and discharging speed of the fourth capacitor, thereby affecting the output waveform of the circuit, and then the conduction and cutoff of the switching tube in the full-bridge inverter circuit are controlled, realizing the effect of converting direct current into alternating current.

[0023] In an alternative embodiment, the DC / AC circuit further comprises a fifth resistor and / or a sixth resistor;

[0024] The fifth resistor is connected between the first transistor and the first inverter chip, and / or the sixth resistor is connected between the first end of the second inverter chip and the second transistor.

[0025] Beneficial effect: by setting the fifth resistor and / or the sixth resistor, the base bias voltage of the first transistor and the second transistor is set, the working point of the transistor is determined, the transistor works in the appropriate area, and the stability and linearity of the circuit are ensured.

[0026] In an alternative embodiment, the DC / AC circuit further comprises a first resistor and / or a second resistor;

[0027] The first resistor is connected between the second power supply and the first transistor, and / or the second resistor is connected between the second power supply and the second transistor.

[0028] Beneficial effect: by setting the first resistor and the second resistor between the second power supply and the first transistor and between the second power supply and the second transistor, the current in the circuit is limited, and the damage of the elements caused by excessive current is prevented.

[0029] In an alternative embodiment, the DC / AC circuit further comprises a first capacitor and / or a second capacitor and / or a third capacitor;

[0030] One end of the first capacitor is connected with the second power supply, and the other end is grounded;

[0031] And / or, one end of the second capacitor is connected with the second power supply, and the other end of the second capacitor is grounded.

[0032] And / or, one end of the third capacitor is connected with the second power supply through the voltage stabilizer, and the other end of the third capacitor is grounded.

[0033] Beneficial effects: the first capacitor in the application filters the low-frequency ripple in the direct current output by the second power supply, so that the output direct current voltage is more stable and has stronger stability. The second capacitor and the third capacitor filter the high-frequency noise on the power line, so as to ensure the normal work of other elements in the circuit.

[0034] In an optional embodiment, the first output end of the boost circuit is connected with the first input end of the rectifier circuit, and the second output end of the boost circuit is connected with the second input end of the rectifier circuit.

[0035] The first output end of the rectifier circuit is grounded, and the second output end of the rectifier circuit outputs high-voltage direct current.

[0036] Beneficial effects: the first input end and the second input end of the rectifier circuit in the application are respectively connected with the first output end and the second output end of the boost circuit, so as to convert the high-voltage alternating current of the boost circuit into high-voltage direct current and output the high-voltage direct current by the second output end of the rectifier circuit, thereby forming a corona electrode.

[0037] In an optional embodiment, the rectifier circuit comprises a first rectifier diode, a second rectifier diode, a third rectifier diode and a fourth rectifier diode.

[0038] The first input end of the rectifier circuit is respectively connected with the input end of the first rectifier diode and the output end of the second rectifier diode, and the output end of the first rectifier diode and the output end of the third rectifier diode are respectively connected with the first output end of the rectifier circuit.

[0039] The second input end of the rectifier circuit is respectively connected with the input end of the third rectifier diode and the output end of the fourth rectifier diode, and the input end of the fourth rectifier diode and the input end of the second rectifier diode are respectively connected with the second output end of the rectifier circuit.

[0040] Beneficial effects: the rectifier circuit in the application is composed of four rectifier diodes, and the rectifier diodes have the characteristic of one-way conduction, so that the rectifier circuit can be conducted in the positive half cycle and the negative half cycle of the high-voltage alternating current output by the boost circuit, full-wave rectification is realized, and the high-voltage alternating current is converted into high-voltage direct current.

[0041] In an optional embodiment, the rectifier circuit further comprises a seventh resistor.

[0042] The second output end of the rectifier circuit outputs high-voltage direct current through the seventh resistor.

[0043] Beneficial effect: the second output end of the rectifier circuit in the application outputs high-voltage direct current after the seventh resistor, and the seventh resistor is used for protecting the circuit.

[0044] In an alternative embodiment, the voltage boosting circuit comprises a transformer.

[0045] Beneficial effect: the application converts the alternating current output by the DC / AC circuit into high-voltage alternating current through the transformer, thereby providing a voltage for forming a corona electrode.

[0046] In a second aspect, the utility model provides a kind of vehicle, and the vehicle includes the air purification device of the above-mentioned first aspect or any implementation corresponding thereto. BRIEF DESCRIPTION OF DRAWINGS

[0047] To more clearly illustrate the specific embodiments of the utility model or the technical solutions in prior art, the drawings needed in the specific embodiments or prior art description will be simply introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0048] Figure 1 The structural block diagram of the air purification device provided for the embodiments of the utility model is shown in the figure.

[0049] Figure 2 The structural block diagram of another air purification device provided for the embodiments of the utility model is shown in the figure.

[0050] Figure 3 The circuit structure schematic diagram of the air purification device provided for the embodiments of the utility model is shown in the figure.

[0051] Figure 4 The structural block diagram of the vehicle provided for the embodiments of the utility model is shown in the figure.

[0052] Mark explanation:

[0053] 100, air purification device;

[0054] 10, inner circulation air inlet of air conditioner; 20, outer circulation air inlet of air conditioner;

[0055] 301, corona electrode; 302, dust collecting electrode;

[0056] 303, DC / AC circuit; K1, first triode; K2, second triode; C0, first capacitor; C2, second capacitor; C3, third capacitor; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; IC1, first inverter chip; IC2, second inverter chip; IC3, third inverter chip; IC4, fourth inverter chip; D, voltage stabilizer; C4, fourth capacitor;

[0057] 304, boost circuit;

[0058] 305, rectifier circuit; D1, first rectifier diode; D2, second rectifier diode; D3, third rectifier diode; D4, fourth rectifier diode; R7, seventh resistor. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0060] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms 'inner', 'upper', 'outer', 'lower' and 'under' are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms 'first','second' and 'third' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0061] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms'mounting', 'connection' and 'communication' should be understood broadly, for example, it can be fixed communication, or detachable communication, or integrally communicated; it can be mechanical communication, or electrical communication; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements inside, which can be wireless communication, or wired communication. For those skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0062] The embodiments of the utility model will be described below in combination with Figures 1 to 4

[0063] ​According to the embodiments of the utility model, the utility model provides a kind of air purification device 100, as shown in Figure 1 The air purification device 100 is arranged at a position associated with the air inlet of the air conditioner of the vehicle. The air purification device 100 performs a purification operation on the air passing through the air inlet of the air conditioner of the vehicle, so that the air entering the cabin of the vehicle is purified air obtained by the purification operation. The purification operation includes electrostatically charging the air passing through the air inlet of the air conditioner of the vehicle.

[0064] It should be understood that the cabin of the vehicle is an environment with a small internal space and strong sealing. The passenger in the cabin consumes oxygen and increases the concentration of carbon dioxide. The switching of the internal and external circulation of the air conditioner can adjust the air freshness and temperature in the cabin, thereby improving the comfort of the cabin.

[0065] In some optional embodiments, referring back to Figure 1 , the air inlet of the air conditioner is divided into an internal circulation air inlet 10 and an external circulation air inlet 20. When the air conditioner is in internal circulation, the air conditioner mainly takes in air from inside the vehicle through the internal circulation air inlet 10, thereby isolating the pollutants outside the vehicle. When the air conditioner is in external circulation, the air conditioner mainly takes in air from outside the vehicle through the external circulation air inlet 20, thereby avoiding the turbidity of the air inside the vehicle.

[0066] In some embodiments, the internal circulation air inlet 10 of the air conditioner is located inside the vehicle, and the external circulation air inlet 20 of the air conditioner is located outside the vehicle. The internal circulation air inlet 10 is connected to an internal circulation air duct, and the external circulation air inlet 20 is connected to an external circulation air duct. The internal circulation air duct and the external circulation air duct are respectively connected to an air conditioner filter element after passing through a main duct. Referring back to Figure 1 The position associated with the air inlet of the air conditioner of the vehicle can be at the main duct, i.e., the air purification device can be arranged at the main duct. In this way, the air purification device can perform a purification operation on the air after the air passes through the air inlet, regardless of whether the air conditioner is in internal circulation or external circulation. The air entering the cabin of the vehicle will be purified air.

[0067] In some embodiments, as shown in Figure 2 , the number of air purification devices 100 can also be multiple. The position associated with the air inlet of the air conditioner of the vehicle can be the internal circulation air duct and the external circulation air duct, i.e., multiple air purification devices can be arranged at the internal circulation air duct of the air conditioner and the external circulation air duct of the air conditioner, respectively. In this way, the air can be filtered in advance by the air purification device before entering the cabin of the vehicle.

[0068] Specifically, the purification operation can be electrostatically charging the air. The air is treated in advance before entering the cabin of the vehicle, so that the particles with static electricity in the air are more easily captured by the air conditioner filter element. The filtration efficiency is high, and the pollutants in the air are effectively prevented from entering the cabin of the vehicle.

[0069] The related technology adopts an air negative ion system. Oxygen molecules are ionized in a gas discharge tube to form electrons and positive ions. The electrons are captured by oxygen molecules in the air to generate air negative ions. The negative ions are released into the air in the vehicle. The negative ions have negative charges and can combine with positively charged particles such as particulate matters, bacteria, viruses, and the like in the air to make the positively charged particles lose activity, thereby purifying the air and removing odors. However, the negative ion generator is generally arranged at a position of an air outlet of an air conditioner. The negative ion generator only works when the air quality in the vehicle is poor or when pollutants enter the vehicle.

[0070] Compared with the air negative ion system in the related technology, the air purification device in the present application is arranged at a position associated with an air inlet of an air conditioner of a vehicle. The air is purified in advance after passing through the air inlet of the air conditioner and before entering a cabin of the vehicle. The air entering the cabin of the vehicle is purified air, which avoids the user inhaling air with poor air quality and improves the user experience. Moreover, the purification efficiency of dust, bacteria, and the like is higher through the electrostatic loading operation.

[0071] The air purification device provided in the embodiment is arranged at a position associated with an air inlet of an air conditioner of a vehicle. The air is purified in advance through the electrostatic loading operation after passing through the air inlet of the air conditioner and before entering a cabin of the vehicle. The air entering the cabin of the vehicle is purified air obtained through the purification operation, which avoids the user in the cabin inhaling air with poor air quality, is beneficial to protecting the health of the user, and improves the user experience.

[0072] In some optional embodiments, as shown in Figure 3 The air purification device 100 includes a corona electrode 301. A static electric field is formed between the corona electrode 301 and a dust collecting electrode 302 formed by a power supply of the vehicle. The static electric field is used to electrostatically load the air passing through the air inlet of the air conditioner of the vehicle, so that the air conditioner filters the air with static electricity.

[0073] In some embodiments, the air purification device 100 outputs high-voltage direct current as the corona electrode 301 of the air purification device. The first power supply of the vehicle is grounded to form the dust collecting electrode 302. The static electric field is formed between the corona electrode 301 and the dust collecting electrode 302. It should be noted that the operation of the air purification device 100 to form the corona electrode 301 can be any existing way of outputting high-voltage direct current by the air purification device.

[0074] The air purification device 100 outputs high-voltage direct current to form a corona electrode 301, and an electrostatic field is formed between the corona electrode 301 and a dust collecting electrode 302 formed by the vehicle power supply, so that the air is electrostatically loaded after entering the air inlet of the air conditioner and before entering the cabin of the vehicle, so that the air pollutants with static electricity are more easily filtered by the air conditioner, and the filtering effect is improved. In this way, the air entering the cabin of the vehicle is purified air, avoiding the user inhaling air with poor air quality, not only ensuring the health of the user, but also improving the user's experience of using the product.

[0075] In some optional embodiments, referring again to Figure 3 The air purification device 100 further includes a DC / AC circuit 303, a boost circuit 304, and a rectifier circuit 305. The DC / AC circuit 303 is configured to convert the second power supply provided by the vehicle to the air purification device 100 from direct current to alternating current. The boost circuit 304 is configured to boost the alternating current converted by the DC / AC circuit 303 to a voltage required by the air purification device 100, and then convert the alternating current output by the DC / AC circuit 303 to high-voltage alternating current. The rectifier circuit 305 is configured to convert the high-voltage alternating current output by the boost circuit 304 to high-voltage direct current, and the high-voltage direct current forms the corona electrode 301. It should be noted that the voltage required by the air purification device 100 can be about 6V, which can be set according to the actual scene.

[0076] The DC / AC circuit 303, the boost circuit 304, and the rectifier circuit 305 are used to sequentially perform DC / AC conversion, boosting, and rectification on the second power supply provided by the vehicle to the air purification device 100, so that the high-voltage direct current output by the rectifier circuit 305 serves as the corona electrode of the air purification device. Moreover, the first power supply of the vehicle is grounded to form the dust collecting electrode 302, and the electrostatic field is formed by the corona electrode 301 and the dust collecting electrode 302, thereby electrostatically loading the air passing through the air inlet of the air conditioner of the vehicle, and improving the filtering efficiency of the air conditioner.

[0077] Referring again to Figure 3 The DC / AC circuit 303 includes a full-bridge inverter circuit composed of four switching tubes. When the first group of switching tubes (the first transistor of the upper bridge arm and the fourth transistor corresponding to the lower bridge arm) is closed, the direct current of the second power supply starts from the positive electrode, passes through the first transistor of the upper bridge arm, the primary winding of the boost circuit 304, and the fourth transistor corresponding to the lower bridge arm, and finally returns to the negative electrode of the second power supply. At this time, a current in one direction is formed on the primary winding of the boost circuit 304, which is equivalent to the positive half cycle of alternating current.

[0078] Next, when the first group of switch tubes are turned off and the second group of switch tubes (the second transistor of the lower bridge arm and the corresponding third transistor of the upper bridge arm) are turned on, the direct current of the second power supply starts from the positive electrode, passes through the second transistor of the lower bridge arm, the primary winding of the boost circuit 304, and the corresponding third transistor of the upper bridge arm, and finally returns to the negative electrode of the second power supply. At this time, the current direction of the primary winding of the boost circuit 304 is reversed, which is equivalent to the negative half cycle of the alternating current. By repeatedly performing the above process, the four switch tubes are turned on and turned off alternately, and by controlling the time and sequence of the switch tubes, the primary winding of the boost circuit 304 continuously appears the current direction alternately changed electricity, realizing the inversion of the direct current provided by the second power supply into alternating current. The switch tube can be a MOS tube, but the present application is not limited thereto.

[0079] In some optional embodiments, referring back to Figure 3 , the DC / AC circuit 303 further comprises a first triode K1, a second triode K2, a third resistor R3, a fourth resistor R4, a first inverter chip IC1, a second inverter chip IC2, a third inverter chip IC3, a fourth inverter chip IC4, a voltage stabilizer D, and a fourth capacitor C4.

[0080] Specifically, the second power supply is connected to the first end of the second inverter chip IC2 in sequence through the first triode K1 and the first inverter chip IC1, and the first end of the second inverter chip IC2 is connected to the control end of the full-bridge inverter circuit and the second power supply through the second triode K2. Moreover, the second end of the second inverter chip IC2 is connected to the voltage stabilizer D, the first end of the third inverter chip IC3 and the first end of the fourth capacitor C4 are connected to the third end of the second inverter chip IC2, the second end of the fourth inverter chip IC4 and the first end of the fourth resistor R4 are connected to the second end of the third inverter chip IC3, and the second end of the fourth inverter chip IC4 is connected to the second end of the fourth resistor R4 and the second end of the fourth capacitor C4 through the third resistor R3. The voltage stabilizer D is used to stabilize the voltage at the second inverter chip IC2 to a fixed value, which can be 5V, and the fixed value can be set according to the actual scene.

[0081] In the above embodiment, the first inverter chip IC1, the second inverter chip IC2, the third inverter chip IC3, and the fourth inverter chip IC4 are used to realize the signal inversion amplification function.

[0082] In some embodiments, referring back to Figure 3 , the DC / AC circuit further comprises a fifth resistor R5, wherein the fifth resistor R5 is connected between the first triode K1 and the first inverter chip IC1.

[0083] In some embodiments, referring back to Figure 3The DC / AC circuit further includes a sixth resistor R6, wherein the sixth resistor R6 is connected between the first end of the second inverter chip IC2 and the second transistor K2.

[0084] It should be noted that the fifth resistor R5 and the sixth resistor R6 have a biasing effect, which can be used to set the base bias voltage of the first transistor K1 and the second transistor K2, determine the working point of the transistor, and make the transistor work in a suitable region to ensure the stability and linearity of the circuit. In the embodiment, the fifth resistor R5 and the sixth resistor R6 can be 10KΩ, and can be set according to the actual application scenario.

[0085] In the embodiment, the fourth capacitor C4 can couple the alternating current signal formed by the front-stage full-bridge inverter circuit to the rear-stage circuit (the RC charging and discharging circuit composed of the fourth capacitor C4, the third resistor R3 and the fourth resistor R4), and the direct current bias of the front-stage circuit will not affect the rear-stage circuit, thereby ensuring the independence and stability of the working points of the circuits at different stages. In addition, the third resistor R3 and the fourth resistor R4 can affect the charging and discharging speed of the fourth capacitor C4 in the RC charging and discharging circuit, thereby affecting the response time of the circuit and the waveform characteristics of the circuit output waveform. The circuit output waveform controls the time and sequence of the conduction or cutoff of the switch tube in the full-bridge inverter circuit through the control end of the full-bridge inverter circuit. The fourth capacitor C4 can be 2.2μF, and the third resistor R3 and the fourth resistor R4 can be 100KΩ. The values can be set according to the actual application scenario, and the application is not limited thereto.

[0086] In the embodiment of the application, the fourth capacitor C4, the third resistor R3 and the fourth resistor R4 constitute an RC charging and discharging circuit. The RC charging and discharging circuit is connected with the second transistor K2 through the second inverter chip IC2, the second transistor K2 is connected with the control end of the full-bridge inverter circuit, the third resistor R3 and the fourth resistor R4 affect the charging and discharging speed of the fourth capacitor C4, thereby affecting the circuit output waveform, and then controlling the conduction and cutoff of the switch tube in the full-bridge inverter circuit, to realize the effect of converting direct current into alternating current. In some optional embodiments, referring back to Figure 3 The DC / AC circuit 303 further includes a first resistor R1 connected between the second power supply and the first transistor K1. The first resistor R1 can be 1KΩ, which is used to limit the current in the circuit, prevent the current from being too large to damage the elements, limit the base current, and protect the transistor.

[0087] In some optional embodiments, referring back to Figure 3The DC / AC circuit 303 further comprises a second resistor R2 connected between the second power supply and the second triode K2. The second resistor R2 can be 1KΩ, which is used to limit the current in the circuit to prevent damage to the components due to excessive current, limit the base current, and protect the triode.

[0088] In some embodiments, referring again to Figure 3 The DC / AC circuit 303 further comprises a first capacitor C0, one end of which is connected to the second power supply and the other end is grounded. The first capacitor C0 is used in the power supply circuit to filter out low-frequency ripples in the direct current output by the second power supply, making the output direct current voltage more stable and more stable. In this embodiment, the first capacitor C0 is about 100μF, and the second power supply is 12V. The first capacitor C0 is connected to the 12V power supply, which helps to stabilize the voltage input to the subsequent circuit and reduce the impact of voltage fluctuations on circuit performance. It should be noted that the specific specifications of the first capacitor C0 and the second power supply can be adjusted in combination with actual application scenarios.

[0089] In some embodiments, referring again to Figure 3 The DC / AC circuit 303 further comprises a second capacitor C2, one end of which is connected to the second power supply and the other end is grounded. The second capacitor C2 is used to bypass high-frequency signals to ground and filter out high-frequency noise on the power supply line to prevent these high-frequency noises from interfering with the normal operation of other components in the circuit. In this embodiment, the second capacitor C2 is about 0.1μF, but the specific specifications can be adjusted in combination with actual application scenarios, which are not limited by the present application.

[0090] In some embodiments, referring again to Figure 3 The DC / AC circuit 303 further comprises a third capacitor C3, one end of which is connected to the second power supply through a voltage stabilizer D, and the other end is grounded. The third capacitor C3 is used to bypass high-frequency signals to ground and filter out high-frequency noise on the power supply line to prevent these high-frequency noises from interfering with the normal operation of other components in the circuit. In this embodiment, the third capacitor C3 is about 0.1μF, but the specific specifications can be adjusted in combination with actual application scenarios, which are not limited by the present application. In some optional embodiments, referring again to Figure 3 The first output end of the boost circuit 304 and the first input end of the rectifier circuit 305 are connected, the second output end of the boost circuit 304 and the second input end of the rectifier circuit 305 are connected, the first output end of the rectifier circuit 305 is grounded, and the second output end of the rectifier circuit 305 outputs high-voltage direct current.

[0091] Exemplarily, the boost circuit 304 includes a transformer, and the transformer converts the alternating current output by the DC / AC circuit 303 into high-voltage alternating current, thereby providing a voltage for forming the corona electrode 301. It should be noted that the first output end of the boost circuit 304 and the port of the high-voltage alternating current output by the secondary coil of the transformer, i.e., the second output end of the boost circuit 304.

[0092] The first input end and the second input end of the rectifier circuit 305 are connected with the first output end and the second output end of the boost circuit 304 respectively, and then the high-voltage alternating current of the boost circuit 304 is converted into high-voltage direct current and output by the second output end of the rectifier circuit 305, thereby forming the corona electrode 301.

[0093] In some optional embodiments, the rectifier circuit 305 includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, and a fourth rectifier diode D4. The first input end of the rectifier circuit 305 is connected with the input end of the first rectifier diode D1 and the output end of the second rectifier diode D2 respectively, and the output end of the first rectifier diode D1 and the output end of the third rectifier diode D3 are connected with the first output end of the rectifier circuit 305 respectively.

[0094] The second input end of the rectifier circuit 305 is connected with the input end of the third rectifier diode D3 and the output end of the fourth rectifier diode D4 respectively, and the input end of the fourth rectifier diode D4 and the input end of the second rectifier diode D2 are connected with the second output end of the rectifier circuit 305 respectively.

[0095] The rectifier circuit 305 is composed of four rectifier diodes in the application, and the unidirectional conduction characteristic of the rectifier diode is used to make the rectifier circuit 305 conduct in the positive half cycle and the negative half cycle of the high-voltage alternating current output by the boost circuit 304, thereby realizing full-wave rectification and converting the high-voltage alternating current into high-voltage direct current.

[0096] In some optional embodiments, the rectifier circuit 305 further includes a seventh resistor R7, and the second output end of the rectifier circuit 305 outputs the high-voltage direct current through the seventh resistor R7, thereby protecting the circuit.

[0097] In the above embodiments, the first power supply and the second power supply of the vehicle can both be 12V, and the actual application scene can be adjusted, and the application is not limited thereto.

[0098] According to the embodiments of the application, a vehicle 400 is provided, as shown in the figure, which includes the air purification device 100 of the above embodiments. Figure 3 Figure 4

[0099] ​Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope of the appended claims.

Claims

1. An air purification device, characterized by, The air purification device is arranged at a position associated with an air inlet of an air conditioner of the vehicle; The air purification device purifies air passing through the air inlet of the air conditioner of the vehicle, so that air entering a cabin of the vehicle is purified air obtained through purification, and the purification includes electrostatically charging the air passing through the air inlet of the air conditioner of the vehicle.

2. The air purification device of claim 1, wherein, The air inlet of the air conditioner includes an inner circulation air inlet and an outer circulation air inlet, the inner circulation air inlet is connected with an inner circulation air inlet pipeline, the outer circulation air inlet is connected with an outer circulation air inlet pipeline, and the inner circulation air inlet pipeline and the outer circulation air inlet pipeline are respectively connected with an air conditioner filter core through a main pipeline; The air purification device is arranged at the main pipeline; Alternatively, a plurality of air purification devices are respectively arranged in the inner circulation air inlet pipeline and the outer circulation air inlet pipeline.

3. The air purification device of claim 1, wherein, The air purification device includes a corona electrode; An electrostatic field is formed between the corona electrode and a dust collecting electrode formed by a power supply of the vehicle.

4. The air purification device of claim 3, wherein, The air purification device further includes a DC / AC circuit, a voltage boosting circuit and a rectifier circuit; The DC / AC circuit is used to convert a second power supply provided by the vehicle to the air purification device from direct current to alternating current, the voltage boosting circuit is used to convert alternating current output by the DC / AC circuit into high-voltage alternating current, and the rectifier circuit is used to convert high-voltage alternating current output by the voltage boosting circuit into high-voltage direct current, and the high-voltage direct current forms the corona electrode; The first power supply of the vehicle is grounded to form the dust collecting electrode.

5. The air purification device of claim 4, wherein, The DC / AC circuit includes a full-bridge inverter circuit, a first triode, a second triode, a third resistor, a fourth resistor, a first inverter chip, a second inverter chip, a third inverter chip, a fourth inverter chip, a voltage stabilizer and a fourth capacitor; The second power supply is connected to the first end of the second inverter chip in sequence through the first triode and the first inverter chip, and the first end of the second inverter chip is connected to the control end of the full-bridge inverter circuit and the second power supply through the second triode. The second end of the second inverter chip is connected to the voltage stabilizer, the third end of the second inverter chip is connected to the first end of the third inverter chip and the first end of the fourth capacitor, the second end of the third inverter chip is connected to the first end of the fourth inverter chip and the first end of the fourth resistor, and the second end of the fourth inverter chip is connected to the second end of the fourth resistor and the second end of the fourth capacitor through the third resistor.

6. The air purification device of claim 5, wherein, The DC / AC circuit further includes a fifth resistor and / or a sixth resistor; The fifth resistor is connected between the first triode and the first inverter chip, and / or the sixth resistor is connected between the first end of the second inverter chip and the second triode.

7. The air purification device of claim 5, wherein, The DC / AC circuit further includes a first resistor and / or a second resistor; The first resistor is connected between the second power supply and the first triode, and / or the second resistor is connected between the second power supply and the second triode.

8. The air purification device of claim 5, wherein, The DC / AC circuit further includes a first capacitor and / or a second capacitor and / or a third capacitor; One end of the first capacitor is connected to the second power supply, and the other end is grounded. And / or, one end of the second capacitor is connected with the second power supply, and the other end of the second capacitor is grounded. And / or, one end of the third capacitor is connected with the second power supply through the voltage stabilizer, and the other end of the third capacitor is grounded.

9. The air purification device of claim 4, wherein, The first output end of the boost circuit is connected with the first input end of the rectifier circuit, and the second output end of the boost circuit is connected with the second input end of the rectifier circuit. The first output end of the rectifier circuit is grounded, and the second output end of the rectifier circuit outputs high-voltage direct current.

10. The air purification device of claim 9, wherein, The rectifier circuit comprises a first rectifier diode, a second rectifier diode, a third rectifier diode and a fourth rectifier diode. The first input end of the rectifier circuit is connected with the input end of the first rectifier diode and the output end of the second rectifier diode respectively, and the output end of the first rectifier diode and the output end of the third rectifier diode are connected with the first output end of the rectifier circuit respectively. The second input end of the rectifier circuit is connected with the input end of the third rectifier diode and the output end of the fourth rectifier diode respectively, and the input end of the fourth rectifier diode and the input end of the second rectifier diode are connected with the second output end of the rectifier circuit respectively.

11. The air purification device of claim 9, wherein, The rectifier circuit further comprises a seventh resistor. The second output end of the rectifier circuit outputs high-voltage direct current through the seventh resistor.

12. The air purification device according to any one of claims 4-11, characterized in that, The boost circuit comprises a transformer.

13. A vehicle characterized by comprising: The vehicle comprises the air purification device according to any one of claims 1-12.

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