CN110667335A - Control method and device of air conditioning system of vehicle and vehicle - Google Patents
Control method and device of air conditioning system of vehicle and vehicle Download PDFInfo
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- CN110667335A CN110667335A CN201910984592.8A CN201910984592A CN110667335A CN 110667335 A CN110667335 A CN 110667335A CN 201910984592 A CN201910984592 A CN 201910984592A CN 110667335 A CN110667335 A CN 110667335A
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- conditioning system
- air conditioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
Abstract
The disclosure provides a control method and device of an air conditioning system of a vehicle and the vehicle, and relates to the field of vehicles. When the heating grade of the air conditioning system is the first heating grade or the second heating grade, the first PTC heater and the second PTC heater can work alternately, and when the heating grade of the air conditioning system is the third heating grade, the first PTC heater works or the first PTC heater and the second PTC heater work simultaneously, so that a certain PTC heater of the air conditioning system is prevented from being continuously in a working state, the service life of each PTC heater is prolonged, and the service life of the air conditioning system is effectively prolonged.
Description
Technical Field
The disclosure relates to the field of vehicles, and in particular relates to a control method and device of an air conditioning system and a vehicle.
Background
A power supply device (e.g., a battery) is generally installed in the vehicle, and an air conditioning system is connected to the power supply device, and the power supply device may supply power to the air conditioning system so that the air conditioning system adjusts the temperature in the cabin of the vehicle. Wherein, air conditioning system can include: a first Positive Temperature Coefficient (PTC) heater and a second PTC heater, the first PTC heater having a smaller power rating than the second PTC heater.
In the related art, when it is necessary to raise the temperature in the cabin of the vehicle, that is, when the operation mode of the air conditioning system is the heating mode, the first PTC heater and/or the second PTC heater in the air conditioning system may be activated. For example, a first PTC heater may be activated at a first heating level, a second PTC heater may be activated at a second heating level, and the first PTC heater and the second PTC heater may be simultaneously activated at a third heating level of the air conditioning system. The heating capacity of the air conditioning system at the first heating level, the heating capacity of the air conditioning system at the second heating level and the heating capacity of the air conditioning system at the third heating level are gradually increased.
However, the PTC heater continues to operate after being activated at each heating level in the related art, resulting in a short service life of the PTC heater and thus the air conditioning system.
Disclosure of Invention
The disclosure provides a control method and device for an air conditioning system of a vehicle and the vehicle, which can solve the problem that the service life of the air conditioning system in the related art is short. The technical scheme is as follows:
in one aspect, a control method of an air conditioning system of a vehicle is provided, the air conditioning system including: a first positive temperature coefficient PTC heater and a second PTC heater, the method further comprising:
when the air conditioning system is in a heating mode, acquiring the heating grade of the air conditioning system, wherein the heating grade comprises: a first heating level, a second heating level, and a third heating level;
if the heating grade of the air conditioning system is a first heating grade or a second heating grade, controlling the first PTC heater and the second PTC heater to alternately work;
and if the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
Optionally, the controlling the first PTC heater and the second PTC heater to alternately operate includes:
if the heating grade of the air conditioning system is the first heating grade, controlling the first PTC heater to work and controlling the second PTC heater to stop working in one starting period of two adjacent starting periods, and controlling the first PTC heater to stop working and controlling the second PTC heater to work in the other starting period of the two adjacent starting periods;
wherein the working time of the first PTC heater and the working time of the second PTC heater are both less than the duration of the start-up period.
Optionally, the controlling the first PTC heater and the second PTC heater to alternately operate includes:
if the heating grade of the air conditioning system is the second heating grade, controlling the first PTC heater to work and controlling the second PTC heater to stop working in one of two adjacent starting periods, and controlling the first PTC heater to stop working and controlling the second PTC heater to work in the other of the two adjacent starting periods;
wherein the working time of the first PTC heater and the working time of the second PTC heater are equal to the duration of the starting period.
Optionally, controlling the first PTC heater to operate, or controlling the first PTC heater and the second PTC heater to operate simultaneously includes:
if the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work;
acquiring the external temperature of the vehicle;
determining a duty cycle of the second PTC heater corresponding to the outside temperature of the vehicle based on the outside temperature of the vehicle, the duty cycle of the second PTC heater comprising: a first duration of time for indicating that the second PTC heater is operating, and a second duration of time for indicating that the second PTC heater is not operating;
for each of the duty cycles, controlling the second PTC heater to operate for the first duration and controlling the second PTC heater to stop operating for the second duration.
Optionally, the air conditioning system further includes: a blower, the method further comprising:
acquiring a circulation mode of the air conditioning system, wherein the circulation mode comprises the following steps: an inner circulation mode and an outer circulation mode;
and when the circulation mode of the air-conditioning system is the external circulation mode, controlling the air output of the air blower based on the heating grade of the air-conditioning system.
Optionally, based on the heating level of the air conditioning system, controlling the air output of the blower includes:
if the heating grade of the air conditioning system is the first heating grade, controlling the maximum air output of the air blower to be a first air output;
if the heating grade of the air conditioning system is the second heating grade, controlling the maximum air output of the air blower to be the second air output;
if the heating grade of the air conditioning system is the third heating grade, controlling the maximum air output of the blower to be the third air output,
and the first air output is less than the second air output, and the second air output is less than the third air output.
In another aspect, there is provided a control apparatus of an air conditioning system of a vehicle, the air conditioning system including: a first positive temperature coefficient PTC heater and a second PTC heater, the apparatus comprising:
the first obtaining module is used for obtaining the heating grade of the air conditioning system when the air conditioning system is in a heating mode, and the heating grade comprises: a first heating level, a second heating level, and a third heating level;
the first control module is used for controlling the first PTC heater and the second PTC heater to alternately work if the heating grade of the air conditioning system is a first heating grade or a second heating grade; and if the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
Optionally, the first control module is configured to:
when the heating grade of the air conditioning system is the first heating grade, controlling the first PTC heater to work and the second PTC heater to stop working in one starting period of two adjacent starting periods, and controlling the first PTC heater to stop working and the second PTC heater to work in the other starting period of the two adjacent starting periods, wherein the working time of the first PTC heater and the working time of the second PTC heater are both smaller than the duration of the starting periods;
the heating grade of the air conditioning system is the second heating grade, in one starting period of two adjacent starting periods, the first PTC heater is controlled to work, the second PTC heater stops working, in the other starting period of the two adjacent starting periods, the first PTC heater stops working and is controlled to work, and the second PTC heater works, wherein the working time of the first PTC heater and the working time of the second PTC heater are equal to the duration of the starting periods.
Optionally, the first control module is configured to:
when the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work;
acquiring the external temperature of the vehicle;
determining a duty cycle of the second PTC heater corresponding to the outside temperature of the vehicle based on the outside temperature of the vehicle, the duty cycle of the second PTC heater comprising: a first duration of time for indicating that the second PTC heater is operating, and a second duration of time for indicating that the second PTC heater is not operating;
for each of the duty cycles, controlling the second PTC heater to operate for the first duration and controlling the second PTC heater to stop operating for the second duration.
Optionally, the air conditioning system further includes: a blower, the apparatus further comprising:
a second obtaining module, configured to obtain a circulation pattern of the air conditioning system, where the circulation pattern includes: an inner circulation mode and an outer circulation mode;
and the second control module is used for controlling the air output of the air blower based on the heating grade of the air conditioning system when the circulation mode of the air conditioning system is the external circulation mode.
In still another aspect, there is provided a control apparatus of an air conditioning system of a vehicle, the apparatus including: a processor, a memory and a computer program stored on and executable on the memory, the processor implementing the method of controlling an air conditioning system of a vehicle as described in the above aspect when executing the computer program.
In still another aspect, there is provided a computer-readable storage medium having instructions stored therein, which, when run on a computer, cause the computer to execute the control method of the air conditioning system of the vehicle according to the above aspect.
In yet another aspect, a computer program product containing instructions is provided, which when run on the computer, causes the computer to execute the method of controlling an air conditioning system of a vehicle of the above aspect.
In still another aspect, there is provided a vehicle including the control device of the air conditioning system according to the above aspect.
The beneficial effect that technical scheme that this disclosure provided brought includes at least:
the present disclosure provides a control method and apparatus for an air conditioning system of a vehicle, and a vehicle, in which when a heating level of the air conditioning system is a first heating level or a second heating level, a first PTC heater and a second PTC heater may alternately operate, and when the heating level of the air conditioning system is a third heating level, the first PTC heater operates, or the first PTC heater and the second PTC heater operate simultaneously, thereby preventing a certain PTC heater of the air conditioning system from being continuously in an operating state, and thus increasing the service life of each PTC heater, thereby effectively increasing the service life of the air conditioning system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a control method of an air conditioning system of a vehicle according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a control method of an air conditioning system of another vehicle according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a control method of an air conditioning system of a vehicle according to still another embodiment of the present disclosure;
fig. 4 is a block diagram of a control device of an air conditioning system of a vehicle according to an embodiment of the present disclosure;
fig. 5 is a block diagram of a control device of an air conditioning system of another vehicle according to an embodiment of the present disclosure;
fig. 6 is a block diagram of a control device of an air conditioning system of a vehicle according to still another embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The disclosed embodiments provide a control method of an air conditioning system of a vehicle, which may be applied to a Vehicle Control Unit (VCU) of the vehicle. The air conditioning system may include: a first PTC heater and a second PTC heater. Alternatively, the vehicle may be an electric vehicle, for example it may be a purely electric vehicle. Referring to fig. 1, the control method may include:
The heating level may include: the air conditioning system comprises a first heating grade, a second heating grade and a third heating grade, wherein the heating capacity of the first heating grade of the air conditioning system is smaller than that of the second heating grade, and the heating capacity of the second heating grade is smaller than that of the third heating grade, namely, the heating capacity of the first heating grade, the heating capacity of the second heating grade and the heating capacity of the third heating grade of the air conditioning system are gradually increased in sequence. The heating quantity is the sum of the heat values provided by the air conditioning system in the heating mode in unit time.
Optionally, the heating level of the air conditioning system of the vehicle may be configured before the vehicle leaves the factory.
And 102, if the heating grade of the air conditioning system is the first heating grade or the second heating grade, controlling the first PTC heater and the second PTC heater to alternately work.
For example, if the heating level of the air conditioning system obtained by the VCU is the first heating level or the second heating level, the VCU may control one of the first PTC heater and the second PTC heater to operate for a period of time, and then control the other of the first PTC heater and the second PTC heater to operate. And, one of the first and second PTC heaters is in operation, and the other PTC heater is not in operation, thereby enabling the first and second PTC heaters to be alternately operated.
And 103, if the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
In the embodiment of the present disclosure, if the heating level of the air conditioning system obtained by the VCU is the third heating level, the VCU may control one of the first PTC heater and the second PTC heater to operate, for example, may control the first PTC heater to operate. Alternatively, the VCU may control both PTC heaters to operate simultaneously.
In summary, the embodiments of the present disclosure provide a control method for an air conditioning system of a vehicle, where when the heating level of the air conditioning system is a first heating level or a second heating level, a first PTC heater and a second PTC heater may alternately operate, and when the heating level of the air conditioning system is a third heating level, the first PTC heater operates, or the first PTC heater and the second PTC heater operate simultaneously, so as to avoid that a certain PTC heater of the air conditioning system is continuously in an operating state, thereby improving the service life of each PTC heater, and thus effectively improving the service life of the air conditioning system.
Fig. 2 is a flowchart of a control method of an air conditioning system of another vehicle according to an embodiment of the present disclosure. The method may be applied to a VCU of a vehicle. The air conditioning system may include: a first PTC heater, a second PTC heater, and a blower. Alternatively, the vehicle may be an electric vehicle, for example it may be a purely electric vehicle. For example, the first PTC heater and the second PTC heater may each be a wind-heated heater. The first PTC heater is rated at 2.5 kilowatts (kw) and the second PTC heater is rated at 3 kw. Referring to fig. 2, the method may include:
The heating level may include: the air conditioning system comprises a first heating level, a second heating level and a third heating level, wherein the heating capacity of the first heating level of the air conditioning system is smaller than that of the second heating level, and the heating capacity of the second heating level is smaller than that of the third heating level, namely, the heating capacity of the first heating level, the heating capacity of the second heating level and the heating capacity of the third heating level of the air conditioning system are gradually increased. The heating quantity is the sum of the heat values provided by the air conditioning system in the heating mode in unit time.
Optionally, the heating level of the air conditioning system of the vehicle may be configured before the vehicle leaves the factory.
In the embodiment of the present disclosure, an air conditioner control panel is disposed in the vehicle, and a temperature control knob (also referred to as a temperature adjustment knob) may be disposed on the air conditioner control panel, and the air conditioner control panel may receive a temperature control signal triggered by the temperature control knob. The air conditioner control panel can be in communication connection with the VCU, and can send the temperature control signal to the VCU, and the VCU can judge whether the air conditioner system is in a heating mode according to the temperature control signal and acquire the heating grade of the air conditioner system based on the temperature control signal when the air conditioner system is determined to be in the heating mode.
It should be noted that, in the embodiment of the present disclosure, the driver may indirectly control the air conditioning system through the air conditioning control panel. The driver can rotate the temperature control knob on the temperature control panel promptly, is rotated the back when the temperature control knob, can trigger the control by temperature change signal, and air conditioner control panel can send the control by temperature change signal who receives to VCU.
Optionally, the position of the temperature control knob on the air conditioner control panel can be provided with a plurality of scale intervals, and correspondingly, when the temperature control knob is rotated to different scale intervals, the control panel can send different temperature control signals to the VCU. The VCU may obtain a heating level corresponding to the received temperature control signal according to a correspondence between the temperature control signal and the heating level stored in advance. The scale interval on the air-conditioning control panel can be set according to the number of heating levels of the air-conditioning system configured before the vehicle leaves the factory.
For example, assuming that the air conditioning system has three heating levels, at least 4 scale intervals may be set on the air conditioning control panel, for example, a first scale interval is 1 to 16, a second scale interval is 17 to 21, a third scale interval is 22 to 27, and a fourth scale interval is 28 to 33. When the temperature control knob is rotated to the first scale interval, the VCU may determine that the air conditioning system is in the cooling mode, and when the temperature control knob is rotated to the second, third, and fourth scale intervals, the VCU may determine that the air conditioning system is in the heating mode. And the second scale interval corresponds to the first heating level, the third scale interval corresponds to the second heating level, and the fourth scale interval corresponds to the third heating level.
Step 202, if the heating level of the air conditioning system is the first heating level, in one of two adjacent starting periods, controlling the first PTC heater to work, and controlling the second PTC heater to stop working, and in the other of the two adjacent starting periods, controlling the first PTC heater to stop working, and controlling the second PTC heater to work.
The working time of the first PTC heater and the working time of the second PTC heater are both smaller than the duration of the starting period.
Alternatively, the start-up period at the first heating level, the operating period of the first PTC heater, and the operating period of the second PTC heater may be pre-stored by the VCU of the vehicle. And the operating period of the first PTC heater may be equal to the operating period of the second PTC heater. For example, the start-up period may be 360 seconds(s), the operating time period of the first PTC heater, and the operating time period of the second PTC heater may be 240 s.
Because the working time of each starting period of the first PTC heater and the second PTC heater is less than the duration of the starting period, compared with the air-conditioning system in the related art, when the first PTC heater continuously works under the first heating level, that is, the output power of the air-conditioning system is equal to the rated power of the first PTC heater, the control method of the air-conditioning system provided by the embodiment of the disclosure can effectively reduce the output power of the air-conditioning system on the premise of prolonging the service life of the air-conditioning system, thereby reducing the energy consumption of the power supply equipment of the vehicle by the air-conditioning system.
Optionally, if the vehicle is an electric vehicle, the energy consumption of the air conditioning system to the power supply equipment of the vehicle is reduced, so that the driving range of the electric vehicle can be effectively improved.
In an embodiment of the present invention, the air conditioning system may further include: the VCU can be connected with the first PTC heater through the first relay and controls the first PTC heater to work by controlling the first relay to be closed; the first relay is controlled to be switched off so as to control the first PTC heater to stop working. The VCU can be connected with the second PTC heater through the second relay and controls the second PTC heater to work by controlling the second relay to be closed; and controlling the second PTC heater to stop working by controlling the second PTC heater to be disconnected.
It should be noted that, a timer may be configured in the VCU, and accordingly, the VCU also has a timing function. When the VCU detects that the current heating level is the first heating level, the VCU may repeatedly perform the following operations: controlling a first relay to be closed in one starting period of two adjacent starting periods so as to control a first PTC heater to work, starting counting by a timer in a VCU while controlling the first relay to be closed, and controlling the first relay to be opened when the counted time length is equal to the prestored working time length of the first PTC heater; and after the timed duration is equal to the pre-stored starting period, resetting the timer. In another starting period of the two adjacent starting periods, controlling the second relay to be closed so as to control the second PTC heater to work, starting timing by a timer in the VCU while controlling the second relay to be closed, and controlling the second relay to be opened when the timing duration is equal to the prestored working duration of the second PTC heater; and after the timed duration is equal to the pre-stored starting period, resetting the timer. According to the working process of the timer, the timer carries out zero clearing operation once in each starting period.
Optionally, the timer in the VCU may also be cleared when the counted time period is equal to the pre-stored operating time period of the first PTC heater or the second PTC heater, and the counting is restarted. Correspondingly, when the timing duration is equal to the difference between the starting period and the working duration of the first PTC heater, the VCU controls the second relay to close, and simultaneously, the timer is cleared again and starts timing again. And then, resetting the timer again when the timed duration is equal to the difference between the starting period and the working duration of the second PTC heater, and restarting timing, wherein the VCU can control the second relay to be switched off at the moment, and resetting the timer when the timed duration is equal to the difference between the starting period and the working duration of the second PTC heater. According to the working process of the timer, the timer carries out zero clearing operation twice in each starting period.
For example, if the heating level of the air conditioning system obtained by the VCU is the first heating level, the start-up period of the air conditioning system is 360s, and both the operating time of the first PTC heater and the operating time of the second PTC heater are 240s, the VCU may control the first PTC heater to operate for 240s, control the second PTC heater to operate for 240s after 360s, and control the first PTC heater to operate for 240s after 360s, so as to control the first PTC heater and the second PTC heater to operate alternately.
And step 203, if the heating grade of the air conditioning system is the second heating grade, controlling the first PTC heater to work and the second PTC heater to stop working in one of two adjacent starting periods, and controlling the first PTC heater to stop working and the second PTC heater to work in the other of the two adjacent starting periods.
The time length of the first PTC heater working and the time length of the second PTC heater working are equal to the duration of the starting period.
In an embodiment of the present invention, when the obtained heating level of the air conditioning system is the second heating level, the VCU may repeatedly perform the following operations: in one starting period of two adjacent starting periods, the first relay is controlled to be closed to control the first PTC heater to work, the timer in the VCU starts timing while the first relay is controlled to be closed, and when the timing duration is equal to the prestored starting period, the first relay is controlled to be opened, the timer is reset, and timing is restarted. And in the other starting period of the two adjacent starting periods, controlling the second relay to be closed so as to control the second PTC heater to work, timing by the timer while controlling the second relay to be closed, and when the timed duration is equal to the prestored starting period, controlling the second relay to be opened and resetting the timer.
For example, if the VCU detects that the heating level of the air conditioning system is the second heating level, the start cycle is 360s, and the operating time of the first PTC heater and the operating time of the second PTC heater are both 360s, the VCU may control the first PTC heater to operate for 360s, and then control the second PTC heater to operate for 360s, so as to control the first PTC heater and the second PTC heater to operate alternately.
It should be noted that, in the embodiment of the present disclosure, the VCU may also control one of the first PTC heater and the second PTC heater to continuously operate when it detects that the current heating level is the second heating level.
And step 204, if the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work.
When the VCU detects that the heating level of the air conditioning system is the third heating level, the VCU can control the first relay to be closed so as to control the first PTC heater to work.
In the disclosed embodiment, the exterior of the vehicle is provided with a temperature sensor that can be connected to the vehicle's VCU and can transmit the detected temperature outside the vehicle to the VCU. Accordingly, the VCU may obtain the outside temperature of the vehicle.
It should be noted that, in the embodiment of the present disclosure, after acquiring the external temperature of the vehicle, the VCU may detect whether the external temperature is less than the temperature threshold. If the VCU detects that the external temperature is less than the temperature threshold, only the first PTC heater may be controlled to operate, i.e., the second PTC heater may be controlled to stop operating. If the VCU detects that the external temperature is not less than the temperature threshold, step 206 may be performed.
Alternatively, the temperature threshold may be pre-stored by the VCU and may be obtained by an operator through a number of experiments. For example, the temperature threshold may be 5 degrees Celsius (C.).
Based on the outside temperature of the vehicle, a duty cycle of the second PTC heater corresponding to the outside temperature of the vehicle is determined, step 206.
Wherein the duty cycle of the second PTC heater may comprise: a first duration for indicating that the second PTC heater is operating, and a second duration for indicating that the second PTC heater is not operating. The first duration is inversely related to the external temperature and, correspondingly, the second duration is positively related to the external temperature, i.e. the lower the external temperature, the longer the first duration, the shorter the second duration.
In the disclosed embodiment, the VCU stores in advance a correspondence relationship between the external temperature of the vehicle and the first and second duration periods, and the VCU may determine the first and second duration periods in the duty cycle of the second PTC heater based on the correspondence relationship and the external temperature of the vehicle.
For example, assuming that the correspondence relationship between the vehicle exterior temperature and the first and second duration periods may be as shown in table 1, it can be seen from table 1 that the duty cycle of the second PTC heater may include the first duration period of 476s and the second duration period of 224s when the vehicle exterior temperature is-10 ℃.
TABLE 1
| Outside temperature (. degree. C.) | -25 | -20 | -15 | -10 | -5 | 0 | 5 |
| First duration(s) | 800 | 644 | 560 | 476 | 392 | 280 | 140 |
| Second duration(s) | 0 | 56 | 140 | 224 | 308 | 420 | 560 |
And step 207, controlling the second PTC heater to work within a first duration and controlling the second PTC heater to stop working within a second duration for each work period.
The VCU may control the second relay to close for the first duration to control the second PTC heater to operate and may control the second relay to open for the second duration to control the second PTC heater to stop operating after determining the first duration and the second duration of the duty cycle of the second PTC heater.
For example, assuming an offboard temperature of-10 ℃, the VCU determines a first duration of the duty cycle of the second PTC heater to be 476s and a second duration to be 224s, the VCU may control the second relay to be closed for 476s and open for 224 s.
Compared with the prior art that the air conditioning system controls the first PTC heater and the second PTC heater to simultaneously operate under the third heating level, namely the output power of the air conditioning system is equal to the sum of the rated powers of the first PTC heater and the second PTC heater, the control method of the air conditioning system of the vehicle provided by the embodiment of the disclosure can reduce the output power of the air conditioning system, thereby effectively reducing the energy consumption of the power supply equipment by the air conditioning system.
It should be noted that, when determining that the heating level of the air conditioning system is the third heating level, the VCU may control the second PTC heater to operate first, and then control the first PTC heater to operate based on the acquired external temperature of the vehicle.
Optionally, the air conditioning system in the embodiment of the present disclosure may further include: a blower. Referring to fig. 3, the control method of the air conditioning system of the vehicle may further include:
and 301, acquiring a circulation mode of the air conditioning system.
The cyclic mode includes: an inner circulation mode and an outer circulation mode. The internal circulation mode refers to that air entering an air duct of an air conditioning system of the vehicle is air in a cabin of the vehicle. The external circulation mode means that air entering an air duct of the air conditioning system is air outside the vehicle.
In the embodiment of the present disclosure, an inner circulation switch and an outer circulation switch are further disposed on the air conditioning control panel of the vehicle, and the air conditioning control panel may receive an inner circulation signal triggered by the inner circulation switch and an outer circulation signal triggered by the outer circulation switch, and may send the received inner circulation signal or outer circulation signal to the VCU. Accordingly, the VCU may obtain the circulation mode of the air conditioning system according to the received signal. For example, if the VCU receives the internal circulation signal, the circulation mode of the air conditioning system may be acquired as the internal circulation mode; if the VCU receives the external circulation signal, the circulation mode of the air conditioning system may be acquired as the external circulation mode.
It should be noted that, the VCU may also be connected to a circulation damper in the air conditioning system, and the VCU may control the circulation damper according to the acquired circulation mode, so as to control the direction of the air entering the air duct of the air conditioning system, that is, to control whether the air in the air duct of the air conditioning system comes from the inside of the vehicle cabin or the outside of the vehicle.
And step 302, when the circulation mode of the air conditioning system is the external circulation mode, controlling the air output of the air blower based on the heating grade of the air conditioning system.
In an embodiment of the present invention, the VCU of the vehicle may be connected to a blower in the air conditioning system, for example, may be connected to a blower knob of the blower, and in the external circulation mode, the VCU may control an air output of the blower by controlling the blower knob based on the acquired heating level.
It should be noted that, the higher the heating level of the air conditioning system obtained by the VCU is, the larger the maximum air output of the blower in the air conditioning system can be controlled by the VCU. That is, the maximum air output of the blower is positively correlated to the heating level of the air conditioning system. For example, if the heating level of the air conditioning system obtained by the VCU is the first heating level, the maximum air output of the blower may be controlled to be the first air output. If the heating grade of the air conditioning system acquired by the VCU is the second heating grade, the maximum air output of the air blower can be controlled to be the second air output. If the heating grade of the air conditioning system acquired by the VCU is the third heating grade, the maximum air output of the blower can be controlled to be the third air output. The first air output is smaller than the second air output, and the second air output is smaller than the third air output.
The VCU can control the air output of the air blower based on the heating grade so as to enable the maximum air output of the air blower to be matched with the current heating grade, thereby avoiding the phenomenon that the temperature of the vehicle cabin of the vehicle is slowly increased due to the large air output of the air blower, and improving the heating efficiency of the air conditioning system on the vehicle cabin on the premise of reducing the energy consumption of power supply equipment of the vehicle.
Optionally, the VCU may pre-store a corresponding relationship between the heating level and the maximum gear of the air blower, and the VCU may obtain the maximum gear of the air blower corresponding to the heating level according to the obtained heating level and the corresponding relationship between the heating level and the maximum gear of the air blower, and control the gear of the air blower by controlling a knob of the air blower according to the maximum gear, so that the air output of the air blower does not exceed the air output corresponding to the maximum gear, that is, the maximum air output.
For example, assuming that the blower has 7 gears, the heating mode of the air conditioning system has 3 heating levels, and the corresponding relationship between the heating level and the maximum gear of the blower is shown in table 2, it can be seen from table 2 that when the heating level is the first heating level, the maximum gear of the blower is 2 gears, that is, when the heating level of the air conditioning system is the first heating level, the gear of the blower is controlled to be less than or equal to 2 gears by the VCU. When the heating level is the second heating level, the maximum gear of the blower is 3 gears, namely when the heating level of the VCU is the second heating level, the gear of the blower is controlled to be less than or equal to 3 gears. When the heating level is the third heating level, the maximum gear of the blower is 7, namely, when the heating level of the VCU is the third heating level, the gear of the blower is controlled to be less than or equal to 7.
TABLE 2
| Heating grade | Maximum gear of blower |
| First heating grade | 2 |
| Second heating grade | 3 |
| Third heating grade | 7 |
It should be noted that, in the embodiment of the present disclosure, if the VCU acquires that the air conditioning system of the vehicle is in the defrosting mode, the first PTC heater and the second PTC heater may be controlled to operate simultaneously, and the maximum air output of the blower is controlled to be the third air output.
The air conditioner control panel of the vehicle is also provided with a defrosting button, and the air conditioner control panel can receive a defrosting signal triggered by the defrosting button and can send the defrosting signal to the VCU. When the VCU receives the defrosting signal, it may determine that the air conditioning system is in the defrosting mode, and may control the first relay and the second relay to be closed to control the first PTC heater and the second PTC heater to operate.
It should be noted that, the order of the steps of the control method of the air conditioning system of the vehicle provided by the embodiment of the present disclosure may be appropriately adjusted, and the steps may also be increased or decreased according to the situation. For example, step 204 and step 205 are performed synchronously. Any method that can be easily conceived by those skilled in the art within the technical scope of the present disclosure is covered by the protection scope of the present invention, and thus, the detailed description thereof is omitted.
In summary, the embodiments of the present disclosure provide a control method for an air conditioning system of a vehicle, where when the heating level of the air conditioning system is a first heating level or a second heating level, a first PTC heater and a second PTC heater may alternately operate, and when the heating level of the air conditioning system is a third heating level, the first PTC heater operates, or the first PTC heater and the second PTC heater operate simultaneously, so as to avoid that a certain PTC heater of the air conditioning system is continuously in an operating state, thereby improving the service life of each PTC heater, and thus effectively improving the service life of the air conditioning system.
Fig. 4 is a block diagram of a control device of an air conditioning system of a vehicle according to an embodiment of the present disclosure. This air conditioning system includes: a first PTC heater and a second PTC heater, the apparatus may comprise:
the first obtaining module 401 is configured to obtain a heating level of the air conditioning system when the air conditioning system is in a heating mode, where the heating level includes: a first heating level, a second heating level, and a third heating level.
The first control module 402 is configured to control the first PTC heater and the second PTC heater to alternately operate when the heating level of the air conditioning system is the first heating level or the second heating level; and when the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
In summary, the embodiments of the present disclosure provide a control device for an air conditioning system of a vehicle, where when a heating level of the air conditioning system is a first heating level or a second heating level, a first PTC heater and a second PTC heater may alternately operate, and when the heating level of the air conditioning system is a third heating level, the first PTC heater operates, or the first PTC heater and the second PTC heater operate simultaneously, so as to prevent a certain PTC heater of the air conditioning system from being continuously in an operating state, thereby improving the service life of each PTC heater, and thus effectively improving the service life of the air conditioning system.
Optionally, the first control module 402 may be configured to:
when the heating grade of the air-conditioning system is a first heating grade, controlling the first PTC heater to work and controlling the second PTC heater to stop working in one starting period of two adjacent starting periods, and controlling the first PTC heater to stop working and controlling the second PTC heater to work in the other starting period of the two adjacent starting periods, wherein the working time of the first PTC heater and the working time of the second PTC heater are both shorter than the duration of the starting periods; when the heating grade of the air conditioning system is a second heating grade, the first PTC heater is controlled to work and the second PTC heater is controlled to stop working in one starting period of two adjacent starting periods, the first PTC heater is controlled to stop working and the second PTC heater is controlled to work in the other starting period of the two adjacent starting periods, wherein the working time length of the first PTC heater and the working time length of the second PTC heater are equal to the duration of the starting periods.
Optionally, the first control module 402 may be configured to:
when the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work; acquiring the external temperature of the vehicle; determining a duty cycle of a second PTC heater corresponding to the outside temperature of the vehicle based on the outside temperature of the vehicle, the duty cycle of the second PTC heater comprising: a first duration for indicating that the second PTC heater is operating, and a second duration for indicating that the second PTC heater is not operating; for each duty cycle, the second PTC heater is controlled to operate for a first duration and is controlled to deactivate for a second duration.
Optionally, the air conditioning system further comprises: the blower, referring to fig. 5, the apparatus may further include:
a second obtaining module 403, configured to obtain a circulation mode of the air conditioning system, where the circulation mode includes: an inner circulation mode and an outer circulation mode.
And a second control module 404, configured to control an air output of the blower based on a heating level of the air conditioning system when the circulation mode of the air conditioning system is the external circulation mode.
In summary, the embodiments of the present disclosure provide a control device for an air conditioning system of a vehicle, where when a heating level of the air conditioning system is a first heating level or a second heating level, a first PTC heater and a second PTC heater may alternately operate, and when the heating level of the air conditioning system is a third heating level, the first PTC heater operates, or the first PTC heater and the second PTC heater operate simultaneously, so as to prevent a certain PTC heater of the air conditioning system from being continuously in an operating state, thereby improving the service life of each PTC heater, and thus effectively improving the service life of the air conditioning system.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the apparatus and the modules described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 6 is a block diagram of a control device of an air conditioning system of a vehicle according to still another embodiment of the present disclosure. Referring to fig. 6, the apparatus includes: a processor 501, a memory 502 and a computer program stored on the memory 502 and operable on the processor 501, the processor implementing the method for controlling an air conditioning system of a vehicle as provided in the above method embodiments, for example, the method shown in any one of fig. 1 to 3, when executing the computer program.
The embodiment of the present disclosure also provides a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium runs on a computer, the computer is enabled to execute the method for controlling the air conditioning system of the vehicle, such as the method shown in any one of fig. 1 to 3, provided by the above method embodiment.
The embodiment of the disclosure also provides a computer program product containing instructions, which when running on a computer, causes the computer to execute the method for controlling the air conditioning system of the vehicle provided by the method embodiment, such as the method shown in any one of fig. 1 to 3.
Embodiments of the present disclosure also provide a vehicle, which may include a control device of an air conditioning system provided in the above embodiments, such as the device shown in any one of fig. 4 to 6.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A control method of an air conditioning system of a vehicle, characterized in that the air conditioning system includes: a first positive temperature coefficient PTC heater and a second PTC heater, the method further comprising:
when the air conditioning system is in a heating mode, acquiring the heating grade of the air conditioning system, wherein the heating grade comprises: a first heating level, a second heating level, and a third heating level;
if the heating grade of the air conditioning system is a first heating grade or a second heating grade, controlling the first PTC heater and the second PTC heater to alternately work;
and if the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
2. The method of claim 1, wherein controlling the alternating operation of the first PTC heater and the second PTC heater comprises:
if the heating grade of the air conditioning system is the first heating grade, controlling the first PTC heater to work and controlling the second PTC heater to stop working in one starting period of two adjacent starting periods, and controlling the first PTC heater to stop working and controlling the second PTC heater to work in the other starting period of the two adjacent starting periods;
wherein the working time of the first PTC heater and the working time of the second PTC heater are both less than the duration of the start-up period.
3. The method of claim 1, wherein controlling the alternating operation of the first PTC heater and the second PTC heater comprises:
if the heating grade of the air conditioning system is the second heating grade, controlling the first PTC heater to work and controlling the second PTC heater to stop working in one of two adjacent starting periods, and controlling the first PTC heater to stop working and controlling the second PTC heater to work in the other of the two adjacent starting periods;
wherein the working time of the first PTC heater and the working time of the second PTC heater are equal to the duration of the starting period.
4. The method of claim 1, wherein controlling the first PTC heater to operate, or controlling the first PTC heater and the second PTC heater to operate simultaneously, comprises:
if the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work;
acquiring the external temperature of the vehicle;
determining a duty cycle of the second PTC heater corresponding to the outside temperature of the vehicle based on the outside temperature of the vehicle, the duty cycle of the second PTC heater comprising: a first duration of time for indicating that the second PTC heater is operating, and a second duration of time for indicating that the second PTC heater is not operating;
for each of the duty cycles, controlling the second PTC heater to operate for the first duration and controlling the second PTC heater to stop operating for the second duration.
5. The method of any of claims 1 to 4, wherein the air conditioning system further comprises: a blower, the method further comprising:
acquiring a circulation mode of the air conditioning system, wherein the circulation mode comprises the following steps: an inner circulation mode and an outer circulation mode;
and when the circulation mode of the air-conditioning system is the external circulation mode, controlling the air output of the air blower based on the heating grade of the air-conditioning system.
6. The method of claim 5, wherein controlling the air output of the blower based on the heating level of the air conditioning system comprises:
if the heating grade of the air conditioning system is the first heating grade, controlling the maximum air output of the air blower to be a first air output;
if the heating grade of the air conditioning system is the second heating grade, controlling the maximum air output of the air blower to be the second air output;
if the heating grade of the air conditioning system is the third heating grade, controlling the maximum air output of the blower to be the third air output,
and the first air output is less than the second air output, and the second air output is less than the third air output.
7. A control device of an air conditioning system of a vehicle, characterized in that the air conditioning system includes: a first positive temperature coefficient PTC heater and a second PTC heater, the apparatus comprising:
the first obtaining module is used for obtaining the heating grade of the air conditioning system when the air conditioning system is in a heating mode, and the heating grade comprises: a first heating level, a second heating level, and a third heating level;
the first control module is used for controlling the first PTC heater and the second PTC heater to alternately work if the heating grade of the air conditioning system is a first heating grade or a second heating grade; and if the heating grade of the air conditioning system is a third heating grade, controlling the first PTC heater to work, or controlling the first PTC heater and the second PTC heater to work simultaneously.
8. The apparatus of claim 7, wherein the first control module is configured to:
when the heating grade of the air conditioning system is the first heating grade, controlling the first PTC heater to work and the second PTC heater to stop working in one starting period of two adjacent starting periods, and controlling the first PTC heater to stop working and the second PTC heater to work in the other starting period of the two adjacent starting periods, wherein the working time of the first PTC heater and the working time of the second PTC heater are both smaller than the duration of the starting periods;
the heating grade of the air conditioning system is the second heating grade, in one starting period of two adjacent starting periods, the first PTC heater is controlled to work, the second PTC heater stops working, in the other starting period of the two adjacent starting periods, the first PTC heater stops working and is controlled to work, and the second PTC heater works, wherein the working time of the first PTC heater and the working time of the second PTC heater are equal to the duration of the starting periods.
9. The apparatus of claim 7, wherein the first control module is configured to:
when the heating grade of the air conditioning system is the third heating grade, controlling the first PTC heater to work;
acquiring the external temperature of the vehicle;
determining a duty cycle of the second PTC heater corresponding to the outside temperature of the vehicle based on the outside temperature of the vehicle, the duty cycle of the second PTC heater comprising: a first duration of time for indicating that the second PTC heater is operating, and a second duration of time for indicating that the second PTC heater is not operating;
for each of the duty cycles, controlling the second PTC heater to operate for the first duration and controlling the second PTC heater to stop operating for the second duration.
10. A vehicle, characterized in that it comprises a device according to any one of claims 6 to 9.
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| CN201910984592.8A CN110667335A (en) | 2019-10-16 | 2019-10-16 | Control method and device of air conditioning system of vehicle and vehicle |
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| US20030217559A1 (en) * | 2002-05-22 | 2003-11-27 | Hisashi Ieda | Vehicle power supply control apparatus |
| CN106347067A (en) * | 2016-07-29 | 2017-01-25 | 北京新能源汽车股份有限公司 | Electric car and control method and system of PTC electric heater for electric car |
| CN208306325U (en) * | 2018-06-05 | 2019-01-01 | 河南森源重工有限公司 | A kind of vehicle temperature regulating system and vehicle |
| CN109417833A (en) * | 2016-07-04 | 2019-03-01 | 株式会社电装 | Heater control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0370621A (en) * | 1989-08-09 | 1991-03-26 | Nippondenso Co Ltd | Heating device for vehicle |
| US20030217559A1 (en) * | 2002-05-22 | 2003-11-27 | Hisashi Ieda | Vehicle power supply control apparatus |
| CN109417833A (en) * | 2016-07-04 | 2019-03-01 | 株式会社电装 | Heater control device |
| CN106347067A (en) * | 2016-07-29 | 2017-01-25 | 北京新能源汽车股份有限公司 | Electric car and control method and system of PTC electric heater for electric car |
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