Control method and system of vehicle-mounted air purification system and automobile

Abstract

The invention discloses a control method and system of a vehicle-mounted air purification system and an automobile. The method comprises the steps that whether the concentration of PM2.5 in the automobile exceeds the standard or not is detected through a PM2.5 sensor; and after it is judged that the PM2.5 concentration exceeds the standard, an air purification mode is started, in the air purification mode, an air conditioner controller collects information of the current air conditioner circulation mode state, the air outlet volume and the air conditioner refrigerating and heating state and adjusts the air conditioner mode, the air volume and the refrigerating and heating state to the state matched with the air purification state, and then a negative ion generator is started for air purification. The integrated air purification system has the advantages that the integrated air purification system is controlled in an automatic control mode, so that the air purification efficiency and the user experience feeling are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile air control, and in particular to a control method and system for a negative ion generator, and an automobile. Background Art

[0002] With the development of intelligent vehicles and increasingly stringent standards and regulations, new energy vehicle manufacturers are increasingly focused on improving in-car air quality, and users are increasingly concerned about the actual purification effect inside their vehicles. This requires that new energy vehicles be equipped with relevant air purification systems. To achieve the expected purification effect, system calibration is required to determine whether the installation location is appropriate.

[0003] There are currently two air purification solutions on the market. One is a standalone air purifier, installed in locations such as elbow rests, coat racks, and dashboards. While standalone air purifiers add to a vehicle's selling point, they also have many drawbacks. ① The air flow design and air volume do not match the air flow inside the vehicle, requiring reliance on HVAC air flow to purify the interior space, otherwise only partial purification is achieved. ② Additional noise is generated, which is unacceptable to users. ③ Additional filters require periodic replacement, increasing vehicle maintenance costs. ④ Standalone air purifiers have relatively low air volume, requiring a longer time to complete purification.

[0004] Another type is an integrated air purification system, consisting of a PM2.5 sensor, a negative ion generator, and a PM2.5 filter. The PM2.5 sensor is typically installed on the air inlet of the air conditioner, while the negative ion generator is installed in front of the evaporator. This approach offers the following advantages: ① It organically combines air purification and air conditioning control, ensuring comfortable air conditioning while achieving rapid air purification; ② The entertainment system display or air conditioning controller display displays air quality and purification effects; and ③ The PM2.5 sensor module detects PM2.5 concentrations inside and outside the vehicle and provides the data to the entertainment system display and air conditioning controller for display and control.

[0005] However, the existing technology lacks a design for the control strategy of the integrated air purification system, and the system can only be manually turned on by the user when needed. This method has shortcomings in air purification efficiency, speed and user experience, and cannot meet people's needs for air purification system control. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a control method and system for a negative ion generator, as well as a vehicle, which adopts an automatic control method to realize the control of an integrated air purification system to improve air purification efficiency and user experience.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a control method for a vehicle-mounted air purification system, including using a PM2.5 sensor to detect whether the PM2.5 concentration in the vehicle exceeds the standard; starting the air purification mode after judging that the PM2.5 concentration exceeds the standard. In the air purification mode, the air-conditioning controller collects the current air-conditioning circulation mode status, air volume, and air-conditioning cooling and heating status information and adjusts the air-conditioning mode, air volume, and cooling and heating status to match the state during air purification, and then turns on the negative ion generator for air purification.

[0008] In the air purification mode, the current air conditioning circulation mode state is collected and the air conditioning circulation mode state is adjusted and controlled to the internal circulation state.

[0009] In air purification mode, the current air volume of the air conditioner is collected and adjusted to a value greater than the minimum threshold air volume required for purification; when the current air volume is less than the minimum threshold air volume, the air volume is increased.

[0010] In air purification mode, the current cooling or heating state of the air conditioner is obtained, and the temperature inside the vehicle is adjusted according to the current cooling or heating state of the air conditioner to ensure that the temperature inside the vehicle is within the temperature range required by the mode.

[0011] When the air conditioner is in cooling mode, the cooling temperature in the vehicle is raised to a first temperature threshold; when the air conditioner is in heating mode, the heating temperature in the vehicle is lowered to a second temperature threshold.

[0012] The negative ion generator is allowed to work only after the air conditioning mode, air volume, and cooling and heating states are adjusted to match the state for air purification. At this time, the negative ion generator is controlled to work and air purification is performed according to the adjusted air volume and temperature.

[0013] During the air purification process, the PM2.5 concentration is monitored in real time to see if it is lower than the set threshold. If it is lower than the set concentration threshold, the air conditioning circulation mode setting state, temperature setting parameters, and air volume setting parameters before the purification mode are restored.

[0014] Only when the vehicle meets the pre-start conditions will PM2.5 concentration data be collected and a decision made on whether to enter air purification mode be made.

[0015] A control system for a vehicle-mounted air-conditioning purification system includes a PM2.5 sensor, an air-conditioning controller, and a negative ion generator; the PM2.5 sensor is used to collect PM2.5 concentration data in the vehicle, and its output end is connected to the air-conditioning controller. The air-conditioning controller activates an air purification mode after determining that the PM2.5 concentration exceeds the standard. In the air purification mode, the air-conditioning controller collects information on the current air-conditioning circulation mode status, air volume, and air-conditioning cooling and heating status, and adjusts the air-conditioning mode, air volume, and cooling and heating status to match the status during air purification. The air-conditioning controller then activates the negative ion generator to perform air purification.

[0016] A car adopts the control method to perform air purification control or adopts the control system to perform air purification.

[0017] The advantages of the present invention are that it uses automatic control to realize the control of the integrated air purification system, thereby improving air purification efficiency and user experience. The calibrated control strategy can effectively and quickly complete air purification, improve purification efficiency, and shorten purification time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0019] Figure 1 This is a flow chart of the automatic purification control strategy of the present invention;

[0020] Figure 2 This is a schematic diagram of the control electrical appliances of the integrated purification system of the present invention;

[0021] Figure 3 Schematic diagram of the test process of the present invention. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0023] The main purpose of this embodiment is to realize the automatic start of the air purification system and to ensure that the air purification system can perform air purification with greater purification efficiency. Through this solution, not only the automatic start of the air purification is achieved, but also the purification rate can be improved, thereby reducing the duration of the air pollution environment and providing a more comfortable and clean air environment for the passengers in the car. The details of this solution are as follows:

[0024] like Figure 1As shown, this embodiment provides a control method for an in-vehicle air purification system, including using a PM2.5 sensor to detect whether the PM2.5 concentration in the vehicle exceeds the standard; after determining that the PM2.5 concentration exceeds the standard, the air purification mode is activated. In the air purification mode, the air conditioning controller collects information about the current air conditioning circulation mode, air volume, and air conditioning cooling and heating status, and adjusts the air conditioning mode, air volume, and cooling and heating status to match the state during air purification, and then activates the negative ion generator to purify the air. During the air purification process, the PM2.5 concentration is monitored in real time to see if it is below a set threshold. If it is below the set concentration threshold, the air conditioning circulation mode setting state, temperature setting parameters, and air volume setting parameters before the purification mode are restored.

[0025] In this embodiment, a pre-start condition is provided for activating purification. Only when the pre-start condition is met will PM2.5 concentration data be collected and the decision to enter air purification mode be made. The pre-start condition primarily considers the driver's vehicle usage, reducing the need to activate the air purification system when the vehicle is not in use and reducing energy consumption caused by unnecessary activations. This has significant benefits for improving the range and required energy consumption of pure electric vehicles. In this embodiment, the pre-start condition is used to detect whether the user is using the vehicle. The pre-start condition is determined to be met when the vehicle is detected to be in the start state or when a remote vehicle start signal or a scheduled vehicle start signal is received via an internet app while the vehicle is in the off state. During vehicle use, or approximately 10 minutes before receiving a remote start signal or the scheduled start time, the PM2.5 concentration is used to determine whether the conditions for entering air purification mode are met. If the PM2.5 concentration exceeds a set threshold, the PM2.5 concentration is determined to be above the standard and air purification mode is entered. Otherwise, air purification mode is not entered.

[0026] After entering the air purification mode, the car is required to complete the purification quickly to reduce the time that the PM2.5 content in the car exceeds the standard. Therefore, the purification rate and efficiency are crucial to the user. Especially when the user is in the car, if the purification time is too long, it will have a negative impact on the health and experience of the user in the car. Therefore, after entering the air purification mode, this solution adjusts and sets the parameters such as the air conditioning status, air flow, and temperature in the car to achieve the purpose of completing the air purification quickly and reduce the time required for air purification. The specific parameters to be set include:

[0027] 1. In air purification mode, collect the current air conditioning circulation mode status and adjust the air conditioning circulation mode status to the internal circulation state.

[0028] 2. In air purification mode, collect the current air volume of the air conditioner and adjust it to a level greater than the minimum threshold air volume required for purification; when the current air volume is less than the minimum threshold air volume, increase the air volume.

[0029] 3. In air purification mode, the system determines the current cooling or heating state of the air conditioner and adjusts the vehicle interior temperature accordingly to ensure the interior temperature remains within the specified range. When the air conditioner is in cooling mode, the interior cooling temperature is raised to a first threshold; when the air conditioner is in heating mode, the interior heating temperature is lowered to a second threshold.

[0030] Because air purification rates vary under different setting parameters, this solution sets air purification parameters from three aspects to achieve faster purification rates. All three parameters need to be adjusted simultaneously, and no one can be ignored; only when all three parameters are met can the fastest purification rate and effect be achieved.

[0031] In this embodiment, when entering the purification mode, the current air conditioning circulation mode is detected, and the air conditioning circulation mode is adjusted to the internal circulation mode regardless of the mode, thereby reducing the external PM2.5 caused by the external circulation;

[0032] After adjusting to the internal circulation mode, the air volume also needs to be increased to match the minimum threshold air volume of the current PM2.5 concentration, because the larger the air volume, the better the air circulation and the better the purification effect, but the air volume cannot be unlimited. Unlimited large air volume will affect the user experience. The noise caused by the large air volume and the large air volume blowing directly on the human body will bring an uncomfortable experience. Therefore, as long as a minimum critical value is met, the air volume required for air purification can be met. A minimum threshold air volume is set here. As long as the minimum threshold air volume is met, the air purification rate requirements can be met. After the air volume reaches a certain air volume threshold, a larger air volume will not contribute much to the rate increase, so it only needs to be greater than the minimum threshold.

[0033] In this embodiment, the minimum threshold air volume is associated with the real-time PM2.5 concentration, and the current minimum threshold air volume is obtained based on the current PM2.5 concentration threshold. When the current air volume is greater than the minimum threshold air volume, the air conditioning air volume is not adjusted; when the current air volume is less than the minimum threshold air volume, the air conditioning air volume is adjusted to the minimum threshold air volume. The minimum threshold air volume can be obtained by pre-experimental calibration. The minimum threshold air volume is obtained by experimentally calibrating a two-dimensional comparison MAP between the PM2.5 concentration and the minimum threshold air volume. The comparison table of the calibrated PM2.5 concentration and the minimum threshold air volume is stored in the air conditioning controller. After entering the air purification mode, the PM2.5 concentration collected before the start of the purification mode is used to look up the table to obtain the set air volume after the purification starts. The air conditioning outlet air volume is controlled by increasing or keeping it unchanged, and the air volume is kept unchanged throughout the effective phase of the purification mode.

[0034] The third parameter set in this embodiment is the temperature parameter, which adjusts the temperature data according to the current cooling or heating state of the air conditioner; the temperature data depends on the setting of the calibration algorithm, generally the temperature is lowered when in heating, and the temperature is increased when in cooling; whether the temperature is increased or decreased, it is kept within a set temperature range, which is the temperature range required by the calibrated air purification mode. Purification can be performed faster through this temperature range. The main reason is that too high or too low temperature is not conducive to air circulation and the movement of PM2.5 particles. Only within a standard temperature range can the movement of particles be more conducive to essence. Therefore, this application fine-tunes the temperature to the set temperature range according to the heating and cooling modes of the air conditioner, thereby providing a basic environment for effective air purification.

[0035] The settings of the above three parameters effectively ensure the rapid progress of air purification. Therefore, after the parameter settings are completed, the negative ion generator is turned on, and the air purification operation is completed by the generated negative ions. The air conditioning mode, air volume, and cooling and heating status are adjusted to match the state during air purification before the negative ion generator is allowed to work. At this time, the negative ion generator is controlled to work and the air purification is carried out according to the adjusted air volume and temperature. Since the PM2.5 concentration gradually decreases during the air purification process, when it drops to a certain threshold, the air purification mode is terminated. After the air purification mode is terminated, the air conditioner needs to be restored to the setting parameters for the purification mode, and the air volume, temperature, circulation mode, etc. are restored to the user's setting status, so as to meet the reset work after the air purification is completed.

[0036] like Figure 2 As shown, a control system of a vehicle air conditioning purification system of this embodiment includes a PM2.5 sensor, an air conditioning controller, and a negative ion generator; the PM2.5 sensor is used to collect PM2.5 concentration data in the vehicle, and its output end is connected to the air conditioning controller. The air conditioning controller starts the air purification mode after determining that the PM2.5 concentration exceeds the standard. In the air purification mode, the air conditioning controller collects the current air conditioning circulation mode status, air volume, and air conditioning cooling and heating status information and adjusts the air conditioning mode, air volume, and cooling and heating status to match the state during air purification. The air conditioning controller then turns on the negative ion generator to purify the air. The air conditioning controller uses the control strategy of the control method in the above embodiment to adjust the air conditioning mode, air volume, and cooling and heating status to match the state parameters during air purification, and then completes the activation of the lithium ion generator to achieve the purpose of air purification. The air conditioning controller integrates the software corresponding to the control method in the above embodiment to achieve air purification operation.

[0037] This embodiment also provides a car, which adopts the control method in the above embodiment to perform air purification control or adopts the control system in the above embodiment to perform air purification.

[0038] In order to prove that the rate and efficiency of the automatic air purification in this solution meet the requirements, this embodiment is equipped with a calibration test method, which is mainly used to determine whether the negative ion generator is working properly and the purification efficiency of the negative ion generator when working. The calibration method used is: light a cigarette and test the PM2.5 value in the car. When the TSI test value exceeds the limit (PM2.5 concentration>1000ug / m 3 ) and then put out the cigarette. When the concentration reaches 1000ug / m 3 , start recording the changes in PM2.5 values ​​over time.

[0039] like Figure 3 The test process is as follows. At the beginning of the calibration, the ambient temperature is around 25°C and the dust source is cigarettes. The negative ion generator is pre-installed in the installation location and powered on to start working. The PM2.5 detection instrument (TSI) is placed in front of the passenger seat. The air conditioner is tested in 4 wind speed, face blowing, and internal circulation mode. A cigarette is lit to make the PM2.5 concentration in the vehicle reach 1000ug / m 3 , TSI starts to decrease steadily from high to low, turn on and off the negative ions respectively, record the time it takes from 1000ug to 20ug, and compare to verify the purification efficiency.

[0040] Figure 2 The system block diagram in the middle shows a hard-wired connection between the negative ion module and the air-conditioning controller. Generally, the negative ion feedback voltage is detected to determine whether the negative ion is in normal working condition; CAN / LIN communication can be carried out between the PM2.5 module and the air-conditioning controller, and whether it is in working condition can be known by the change in concentration value; the air-conditioning filter is directly installed at the air inlet of the internal and external circulation box, and particulate matter is first filtered here; the entertainment system display screen generally has a PM2.5 concentration display interface and a negative ion switch, and CAN communication is carried out with the air-conditioning controller to turn the purification function on or off; at the same time, the air-conditioning controller can also communicate with TBOX through CAN to turn the purification function on or off on the mobile phone.

[0041] The calibration steps are as follows:

[0042] 1. Turn off the negative ion generator and use the PM2.5 detection instrument (TSI) to detect the air purification rate at a fixed air volume level of the air conditioner. Record the data and time, as shown in Table 1.

[0043] Table 1 Negative ion off

[0044]

[0045] 2. Manually turn on the negative ion generator and use the PM2.5 detection instrument (TSI) to detect the air purification rate at a fixed air volume level of the air conditioner. The data and time are recorded as shown in Table 2.

[0046] Table 2 Negative ion opening

[0047]

[0048] 3. Adoption Figure 1 The controller automatically implements the purification strategy, uses a PM2.5 detection instrument (TSI) to detect concentration, and records the data and time, as shown in Table 3.

[0049] Table 3 Negative ion automatic purification strategy

[0050]

[0051] Through the analysis of the above recorded data, we can conclude that:

[0052] 1. Turn off the negative ion generator and the purification time is 12 minutes and 17 seconds. Turn on the negative ion generator manually and the purification time is about 11 minutes, which is 1 minute faster. When the concentration value is less than 100ug, the purification speed of turning off and turning on the negative ion generator manually will become slower and slower, and both will take about 5 minutes.

[0053] 2. After adopting the automatic purification strategy of the controller, the purification time is 7 minutes and 5 seconds, which is 5 minutes shorter than the purification time when the negative ion generator is turned off, achieving the effect of rapid purification. The purification speed only takes about 2 minutes when the concentration value is less than 100ug. Automatic purification can automatically adjust the air volume and temperature in real time, which greatly speeds up the purification speed, greatly improves the air quality in the car, and meets the user's comfort requirements. It can be seen that the air purification method of this scheme can not only achieve the purpose of automatic opening, but also effectively improve the purification rate by adjusting the control parameters, thereby reducing the purification time and improving the user experience.

[0054] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A control method for a vehicle-mounted air purification system, characterized in that: It includes using a PM2.5 sensor to detect whether the PM2.5 concentration in the car exceeds the standard; starting the air purification mode after determining that the PM2.5 concentration exceeds the standard. In the air purification mode, the air conditioning controller collects the current air conditioning circulation mode status, air volume, and air conditioning cooling and heating status information and adjusts the air conditioning mode, air volume and cooling and heating status to match the state during air purification, and then turns on the negative ion generator for air purification.

2. The control method of a vehicle-mounted air purification system according to claim 1, wherein: In the air purification mode, the current air conditioning circulation mode state is collected and the air conditioning circulation mode state is adjusted and controlled to the internal circulation state.

3. The control method of a vehicle-mounted air purification system according to claim 1, wherein: In air purification mode, the current air volume of the air conditioner is collected and adjusted to a value greater than the minimum threshold air volume required for purification; when the current air volume is less than the minimum threshold air volume, the air volume is increased.

4. The control method of a vehicle air conditioning purification system according to claim 1, characterized in that: In air purification mode, the current cooling or heating state of the air conditioner is obtained, and the temperature inside the vehicle is adjusted according to the current cooling or heating state of the air conditioner to ensure that the temperature inside the vehicle is within the temperature range required by the mode.

5. The control method of a vehicle air conditioning purification system according to claim 4, characterized in that: When the air conditioner is in cooling mode, the cooling temperature in the vehicle is raised to a first temperature threshold; when the air conditioner is in heating mode, the heating temperature in the vehicle is lowered to a second temperature threshold.

6. A control method for a vehicle air conditioning purification system according to any one of claims 1 to 5, characterized in that: The negative ion generator is allowed to work only after the air conditioning mode, air volume, and cooling and heating states are adjusted to match the state for air purification. At this time, the negative ion generator is controlled to work and air purification is performed according to the adjusted air volume and temperature.

7. The control method of the vehicle air conditioning purification system according to claim 6, characterized in that: During the air purification process, the PM2.5 concentration is monitored in real time to see if it is lower than the set threshold. If it is lower than the set concentration threshold, the air conditioning circulation mode setting state, temperature setting parameters, and air volume setting parameters before the purification mode are restored.

8. The control method of a vehicle air conditioning purification system according to any one of claims 1 to 5, characterized in that: Only when the vehicle meets the pre-start conditions will PM2.5 concentration data be collected and a decision made on whether to enter air purification mode be made.

9. A control system for a vehicle air conditioning purification system, characterized by: It includes a PM2.5 sensor, an air-conditioning controller, and a negative ion generator; the PM2.5 sensor is used to collect PM2.5 concentration data in the vehicle, and its output end is connected to the air-conditioning controller. The air-conditioning controller starts the air purification mode after determining that the PM2.5 concentration exceeds the standard. In the air purification mode, the air-conditioning controller collects the current air-conditioning circulation mode status, air volume, and air-conditioning cooling and heating status information and adjusts the air-conditioning mode, air volume, and cooling and heating status to match the state during air purification, and then the air-conditioning controller turns on the negative ion generator for air purification.

10. An automobile, characterized in that: The automobile adopts the control method described in any one of claims 1 to 8 to perform air purification control or adopts the control system described in claim 9 to perform air purification.

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