Control method for a vehicle and vehicle

Abstract

The present application relates to the technical field of vehicles, and particularly provides a control method for a vehicle and the vehicle, aiming at solving the problem that the existing vehicle is prone to accidents due to the risk of resonance of the engine and the compressor of the vehicle-mounted air conditioner. The vehicle of the present application comprises an engine and a vehicle-mounted air conditioner for adjusting the indoor environment temperature of the vehicle. After the indoor environment temperature reaches the preset temperature set by the user, the control method of the present application comprises: acquiring the frequency F of the engine; acquiring the frequency f of the compressor of the vehicle-mounted air conditioner; and selectively adjusting the vehicle-mounted air conditioner according to the frequency F of the engine and the frequency f of the compressor. The present application can selectively adjust the vehicle-mounted air conditioner, so as to avoid the frequency F of the engine and the frequency f of the compressor being consistent, and further avoid the resonance of the engine and the compressor, thereby reducing the probability of accidents caused by the resonance of the engine and the compressor, improving the safety of the vehicle, and improving the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and specifically provides a control method for a vehicle and the vehicle. BACKGROUND

[0002] At present, the use of air conditioners has been popularized and has become a necessity of life. With the popularization of air conditioners, users have more and more choices and uses of air conditioners. In order to meet the needs of users, air conditioners are also added to cars, especially for large vehicles, which carry a vehicle-mounted air conditioner similar to a household hanging machine. The vehicle-mounted air conditioner is powered by a storage battery, and is similar to a household air conditioner. The vehicle-mounted air conditioner also has an indoor unit and an outdoor unit.

[0003] In the prior art, when the vehicle is driving, the engine of the car will vibrate. When the vibration frequency of the engine is consistent with the vibration frequency of the compressor of the vehicle-mounted air conditioner, resonance phenomenon will occur, which may cause serious accidents.

[0004] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0005] The present application aims to at least partially solve the above technical problems, i.e., at least partially solve the problem that the existing vehicle is prone to accidents due to resonance of the engine and the compressor of the vehicle-mounted air conditioner.

[0006] In a first aspect, the present application provides a control method for a vehicle, the vehicle comprising an engine and a vehicle-mounted air conditioner, the vehicle-mounted air conditioner being configured to adjust an in-vehicle ambient temperature of the vehicle, the control method comprising: obtaining a frequency F of the engine; obtaining a frequency f of a compressor of the vehicle-mounted air conditioner; and selectively adjusting the vehicle-mounted air conditioner according to the frequency F of the engine and the frequency f of the compressor.

[0007] In the preferred technical solution of the above control method, the step of "selectively adjusting the vehicle-mounted air conditioner according to the frequency F of the engine and the frequency f of the compressor" specifically comprises: comparing the frequency F of the engine and the frequency f of the compressor; and selectively adjusting the vehicle-mounted air conditioner according to the comparison result.

[0008] In the preferred technical solution of the above control method, the step of "selectively adjusting the vehicle-mounted air conditioner according to the comparison result" specifically comprises: if F > f, not adjusting the vehicle-mounted air conditioner.

[0009] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the comparison result specifically comprises: if F=f, further acquiring an opening angle θ of an electromagnetic expansion valve of the vehicle air conditioner; judging whether the opening angle θ is less than a maximum opening angle θmax; and selectively adjusting the vehicle air conditioner according to the judgment result.

[0010] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the judgment result specifically comprises: if the judgment result is “yes”, adjusting the opening angle θ of the electromagnetic expansion valve to θmax.

[0011] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the judgment result specifically comprises: if the judgment result is “no”, further acquiring an input current value I of the vehicle air conditioner; judging whether the input current value I is less than a maximum input current value Imax; and selectively adjusting the vehicle air conditioner according to the judgment result.

[0012] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the judgment result specifically comprises: if the judgment result is “no”, adjusting the input current value of the vehicle air conditioner to the maximum input current value Imax.

[0013] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the judgment result specifically comprises: if the judgment result is “yes”, further acquiring a current operation mode of the vehicle air conditioner; and adjusting a preset temperature set by a user according to the current operation mode.

[0014] In the preferred technical scheme of the control method, the step of selectively adjusting the vehicle air conditioner according to the comparison result specifically comprises: if F

[0015] In the second aspect, the present application provides a vehicle comprising a controller configured to perform the control method described above.

[0016] According to the technical scheme, the frequency F of the engine and the frequency f of the compressor of the vehicle-mounted air conditioner are acquired, and the vehicle-mounted air conditioner is selectively adjusted according to the frequency F of the engine and the frequency f of the compressor, so that the frequency F of the engine and the frequency f of the compressor are avoided to be consistent, and the engine and the compressor are avoided to resonate, the probability of accidents caused by resonance of the engine and the compressor is reduced, the safety of the vehicle is improved, and the use experience of the user is improved.

[0017] Further, compared with the prior art of calculating the difference between the frequency F of the engine and the frequency f of the compressor, and then comparing the difference with a preset value, and selectively adjusting the vehicle-mounted air conditioner according to the comparison result, the frequency F of the engine and the frequency f of the compressor are directly compared, and the vehicle-mounted air conditioner is selectively adjusted according to the comparison result, so that the relationship between the frequency F of the engine and the frequency f of the compressor can be more intuitively judged, and the vehicle-mounted air conditioner can be more timely adjusted according to the comparison result, so that the resonance phenomenon caused by the consistency of the frequency f of the compressor and the frequency F of the engine is avoided.

[0018] Further, when the frequency F of the engine is higher than the frequency f of the vehicle-mounted air conditioner, it indicates that the engine and the compressor of the vehicle-mounted air conditioner will not resonate, and the vehicle-mounted air conditioner does not need to be adjusted at this time.

[0019] Further, when the frequency F of the engine is equal to the frequency f of the vehicle-mounted air conditioner, it is first judged whether the opening and closing angle of the electromagnetic expansion valve is less than the maximum opening and closing angle θmax, and the opening and closing angle of the electromagnetic expansion valve of the vehicle-mounted air conditioner is selectively adjusted according to the judgment result to reduce the frequency of the compressor, so that the vehicle-mounted air conditioner can be reduced in frequency in time by adjusting the vehicle-mounted air conditioner, and the frequency band of the vehicle-mounted air conditioner is avoided to cross the frequency band of the engine, and the engine and the vehicle-mounted air conditioner are avoided to resonate.

[0020] Further, when the judgment result is “yes”, it indicates that the opening and closing angle of the electromagnetic expansion valve is less than the maximum opening and closing angle, and the opening and closing angle of the electromagnetic expansion valve is adjusted to the maximum opening and closing angle, so that the frequency of the compressor of the vehicle-mounted air conditioner is reduced without changing the temperature of the coil, and the frequency band of the vehicle-mounted air conditioner is avoided to cross the frequency band of the engine, and the engine and the vehicle-mounted air conditioner are avoided to resonate.

[0021] Further, in the case of the judgment result being "no", it is indicated that the opening angle of the electromagnetic expansion valve has reached the maximum opening angle, at this time, the frequency reduction treatment of the compressor cannot be continued by adjusting the opening angle of the electromagnetic expansion valve, by further acquiring the input current value of the vehicle air conditioner, and judging whether the input current value is less than the maximum input current value, the vehicle air conditioner can be selectively adjusted according to the input current value to reduce the frequency of the compressor, thereby ensuring that the frequency band of the vehicle air conditioner does not cross the frequency band of the engine, and resonance between the engine and the vehicle air conditioner can be avoided.

[0022] Further, in the case of the judgment result being "no", it is indicated that the input current value of the vehicle air conditioner is less than the maximum input current value, by adjusting the input current value of the vehicle air conditioner to the maximum input current value, the suction and discharge pressure of the compressor can be improved, and under the condition that the coil temperature remains unchanged, the vehicle air conditioner will reduce the frequency to avoid the coil temperature being too low due to excessive refrigerating capacity, that is, the frequency reduction treatment of the vehicle air conditioner can be realized, and the frequency band of the vehicle air conditioner does not cross the frequency band of the engine, and resonance between the engine and the vehicle air conditioner can be avoided.

[0023] Further, in the case of the judgment result being "yes", it is indicated that the input current value of the vehicle air conditioner has also reached the maximum input current value, and the frequency of the compressor cannot be reduced by adjusting the input current value of the vehicle air conditioner, at this time, by acquiring the current operating mode of the vehicle air conditioner and adjusting the preset temperature set by the user according to the current operating mode, the difference between the actual environment temperature in the vehicle and the preset temperature can be reduced, and the cooling or heating demand of the vehicle air conditioner can be reduced, thereby reducing the energy consumption of the air conditioner and the frequency of the compressor.

[0024] Further, when the frequency F of the engine of the vehicle is lower than the frequency f of the vehicle air conditioner, since the frequency of the vehicle air conditioner already contains the frequency of the engine, and since the vehicle air conditioner uses direct current input, the frequency of the vehicle air conditioner will change according to the change of the power of the battery during operation of the vehicle air conditioner, by acquiring the current frequency of the compressor at intervals and judging whether the frequency of the compressor is reduced, and selectively charging the battery of the vehicle air conditioner according to the judgment result, the vehicle air conditioner can be charged in time when the frequency of the vehicle air conditioner is reduced, avoiding the reduction of the frequency of the vehicle air conditioner due to the reduction of the power of the battery of the vehicle air conditioner, and further preventing the frequency of the vehicle air conditioner from being reduced to the same as the frequency of the engine, thereby avoiding resonance.

[0025] In addition, the vehicle provided by the present application has the beneficial effects of the control method of the vehicle, and compared with the vehicle before the improvement, the vehicle of the present application can avoid resonance of the engine and the compressor of the vehicle air conditioner, thereby reducing the probability of accidents caused by resonance, and further improving the safety of the vehicle and the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0026] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a connection diagram of the vehicle of the present application;

[0028] Figure 2 is a flowchart of the control method of the present application;

[0029] Figure 3 is a flowchart of an embodiment of the control method of the present application.

[0030] LIST OF REFERENCE NUMERALS:

[0031] 1, vehicle; 11, engine; 12, vehicle air conditioner; 121, compressor; 13, controller. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0033] In addition, it should be further pointed out that in the description of the present application, unless otherwise explicitly specified and limited, the terms "arrangement" and "connection" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0034] Please refer to Figure 1 , Figure 1 is a connection diagram of the vehicle of the present application.

[0035] As shown in Figure 1 , the vehicle 1 of the present application comprises an engine 11 and a vehicle air conditioner 12, the vehicle air conditioner comprises a compressor 121, and the vehicle air conditioner 12 is used to adjust the indoor environment temperature of the vehicle 1.

[0036] It should be noted that in actual application, the vehicle 1 can be set as a new energy vehicle, and correspondingly, the control method for the vehicle of the present application is applicable to the new energy vehicle, or the vehicle 1 can also be set as a fuel vehicle, and correspondingly, the control method for the vehicle of the present application is applicable to the fuel vehicle, and the like. Such adjustment and change of the specific type of the vehicle 1 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0037] It should be further noted that the compressor 121 of the vehicle-mounted air conditioner 12 is a variable frequency compressor.

[0038] Next, referring to Figure 2 , Figure 2 is a flowchart of the control method of the vehicle of the present application.

[0039] As Figure 2 shown, when the indoor environment temperature reaches the preset temperature set by the user, the control method of the present application comprises the following steps:

[0040] S1000: acquiring the frequency F of the engine 11;

[0041] S2000: acquiring the frequency f of the compressor 121 of the vehicle-mounted air conditioner 12;

[0042] S3000: selectively adjusting the vehicle-mounted air conditioner according to the frequency F of the engine 11 and the frequency f of the compressor 121.

[0043] Through such a setting, the frequency F of the engine 11 and the frequency f of the compressor 121 of the vehicle-mounted air conditioner can be acquired, and the vehicle-mounted air conditioner can be selectively adjusted according to the frequency F of the engine 11 and the frequency f of the compressor 121, so that the frequency F of the engine 11 and the frequency f of the compressor 121 can be avoided to be consistent, and further, the engine 11 and the compressor 121 can be avoided to produce resonance, the probability of accidents caused by resonance of the engine 11 and the compressor 121 can be reduced, the safety of the vehicle can be improved, and the user's use experience can be improved.

[0044] It should be noted that in actual application, a temperature sensor can be arranged in the vehicle, and the indoor environment temperature can be acquired through the detection result of the temperature sensor, or a thermometer can be arranged in the vehicle, and the indoor environment temperature can be acquired through the measurement value of the thermometer, and the like. Such adjustment and change of the specific acquisition method of the indoor environment temperature do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0045] Preferably, a temperature sensor is arranged in the vehicle, and the indoor environment temperature is acquired through the detection result of the temperature sensor (not shown in the figure).

[0046] It should be noted that in actual application, the skilled in the art can acquire the temperature of the vehicle interior environment, and when the temperature of the vehicle interior environment is equal to the preset temperature, it is indicated that the temperature of the vehicle interior environment reaches the preset temperature set by the user, or the temperature of the vehicle interior environment can be acquired, and it is judged whether the duration that the temperature of the vehicle interior environment reaches the preset temperature set by the user reaches the preset duration, if the duration that the temperature of the vehicle interior environment reaches the preset temperature set by the user reaches the preset duration, it is indicated that the temperature of the vehicle interior environment reaches the preset temperature set by the user, and the like, and such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0047] Preferably, the temperature of the vehicle interior environment is acquired, and it is judged whether the duration that the temperature of the vehicle interior environment reaches the preset temperature set by the user reaches the preset duration, if the duration that the temperature of the vehicle interior environment reaches the preset temperature set by the user reaches the preset duration, it is indicated that the temperature of the vehicle interior environment reaches the preset temperature set by the user.

[0048] It should be noted that in actual application, the skilled in the art can acquire the frequency F of the engine 11 by table lookup, or the speed of the engine 11 can be acquired, and the frequency F of the engine 11 is calculated according to the speed, and the like, and such adjustment and change of the specific acquisition mode of the frequency of the engine 11 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0049] Preferably, the specific steps of “acquiring the frequency of the engine 11” include:

[0050] The speed n of the engine 11 is acquired, and the frequency F of the engine 11 is calculated according to the speed n.

[0051] Through such a setting, the speed n of the engine 11 can be more conveniently acquired, so that the frequency F of the engine 11 can be more conveniently calculated by the speed of the engine 11.

[0052] It should be noted that in actual application, the skilled in the art can acquire the speed n of the engine 11 by setting a speed sensor and acquiring the speed n of the engine 11 by the speed sensor, or the speed n of the engine 11 can be acquired by the data displayed on the instrument panel of the vehicle 1, and the like, and such adjustment and change of the specific acquisition mode of the speed of the engine 11 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0053] Preferably, the speed n of the engine 11 is acquired by the instrument panel of the vehicle 1.

[0054] It should be noted that the calculation mode between the frequency F and the speed n of different types of engines 11 is not the same.

[0055] The specific acquisition method of the frequency of the engine 11 of the present application will be described in detail in the following several cases.

[0056] Case 1:

[0057] For a gasoline engine:

[0058] The frequency F of a 4-cylinder engine is 2*n / 60 (unit: s -1 );

[0059] The frequency F of a 6-cylinder engine is 3*n / 60 (unit: s -1 );

[0060] The frequency F of an 8-cylinder engine is 4*n / 60 (unit: s -1 );

[0061] The frequency F of a 12-cylinder engine is 6*n / 60 (unit: s -1 );

[0062] Case 2:

[0063] For a diesel engine, the frequency F of a 4-cylinder engine is n / 60 (unit: s -1 );

[0064] Case 3:

[0065] For a new energy vehicle, the frequency of the engine is 50HZ as specified in the national standard.

[0066] It should be noted that in actual application, the rotation speed of the compressor 121 can be measured by a rotation speed sensor or a tachometer, and then the frequency of the compressor 121 can be calculated according to the rotation speed, or the frequency of the compressor 121 can also be acquired according to the value displayed on the instrument panel, etc. The adjustment and change of the specific acquisition method of the frequency f of the compressor 121 do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0067] Preferably, the frequency of the compressor 121 is acquired according to the value displayed on the instrument panel.

[0068] It should be noted that in actual application, the frequency F of the engine 11 and the frequency f of the compressor 121 can be directly compared by those skilled in the art, and according to the comparison result, the vehicle-mounted air conditioner is selectively adjusted, or the difference between the frequency F of the engine 11 and the frequency f of the compressor 121 can be calculated first, and then the difference is compared with a preset value, and according to the comparison result, the vehicle-mounted air conditioner is selectively adjusted, or the ratio of the frequency F of the engine 11 to the frequency f of the compressor 121 can be calculated first, and then the ratio is compared with a preset value, and according to the comparison result, the vehicle-mounted air conditioner is selectively adjusted, and the like. Such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0069] Next, referring to Figure 3 , Figure 3 is a flowchart of an embodiment of the control method for a vehicle of the present application.

[0070] Preferably, as shown in Figure 3 , the step of "selectively adjusting the vehicle-mounted air conditioner according to the frequency F of the engine 11 and the frequency f of the compressor 121" includes:

[0071] S3100: comparing the frequency F of the engine 11 with the frequency f of the compressor 121;

[0072] According to the comparison result, the vehicle-mounted air conditioner is selectively adjusted.

[0073] Through such a setting, compared with the way of first calculating the difference between the frequency F of the engine 11 and the frequency f of the compressor 121, and then comparing the difference with a preset value, and according to the comparison result, the vehicle-mounted air conditioner is selectively adjusted, through directly comparing the frequency F of the engine 11 with the frequency f of the compressor 121, and according to the comparison result, the vehicle-mounted air conditioner is selectively adjusted, the relationship between the frequency F of the engine 11 and the frequency f of the compressor 121 can be more intuitively judged, and then the vehicle-mounted air conditioner can be more timely selectively adjusted according to the comparison result, avoiding the occurrence of resonance phenomenon caused by the consistency of the frequency f of the compressor 121 and the frequency F of the engine 11.

[0074] Preferably, as shown in Figure 3 , the step of "selectively adjusting the vehicle-mounted air conditioner according to the comparison result" specifically includes:

[0075] S3101: if F > f, the vehicle-mounted air conditioner is not adjusted.

[0076] Through such a setting, in the case that the frequency F of the engine 11 of the vehicle is higher than the frequency f of the vehicle-mounted air conditioner, it is indicated that the engine 11 and the compressor 121 of the vehicle-mounted air conditioner will not resonate, and at this time, the vehicle-mounted air conditioner does not need to be adjusted.

[0077] It should be noted that, since the opening angle of the electromagnetic expansion valve of the vehicle-mounted air conditioner determines the flow rate of the refrigerant, when the opening angle of the electromagnetic expansion valve is increased, the flow rate of the refrigerant will increase, which will cause the refrigerating capacity of the compressor 121 of the vehicle-mounted air conditioner to increase. However, in order to maintain the indoor environment temperature at the preset temperature set by the user, the vehicle-mounted air conditioner will reduce the frequency of the compressor 121 to prevent the refrigerating capacity from being too high and causing the indoor environment temperature to decrease, thereby achieving frequency reduction of the compressor 121.

[0078] Preferably, as shown in Figure 3 The step of "selectively adjusting the vehicle-mounted air conditioner according to the comparison result" specifically includes:

[0079] S3102: If F = f, further acquire the opening angle θ of the electromagnetic expansion valve of the vehicle-mounted air conditioner;

[0080] S3103: Determine whether the opening angle θ is less than the maximum opening angle θmax;

[0081] According to the determination result, selectively adjust the vehicle-mounted air conditioner;

[0082] Wherein, θmax is the maximum opening angle of the electromagnetic expansion valve.

[0083] Through such a setting, when the frequency F of the engine 11 is equal to the frequency f of the compressor 121 of the vehicle-mounted air conditioner, it is first determined whether the opening angle of the electromagnetic expansion valve is less than the maximum opening angle θmax, and according to the determination result, the opening angle of the electromagnetic expansion valve of the vehicle-mounted air conditioner is selectively adjusted to reduce the frequency of the compressor 121, so that the frequency reduction processing of the vehicle-mounted air conditioner can be performed in time by adjusting the vehicle-mounted air conditioner, and the frequency band of the vehicle-mounted air conditioner can be ensured not to cross the frequency band of the engine 11, and resonance between the engine 11 and the vehicle-mounted air conditioner can be avoided.

[0084] Preferably, as shown in Figure 3 The step of "selectively adjusting the vehicle-mounted air conditioner according to the determination result" specifically includes:

[0085] S3104: If the determination result is "yes", adjust the opening angle θ of the electromagnetic expansion valve to the maximum opening angle θmax.

[0086] Through such a setting, in the case where the determination result is "yes", it is indicated that the opening angle of the electromagnetic expansion valve is less than the maximum opening angle, and by adjusting the opening angle of the electromagnetic expansion valve to the maximum opening angle, the frequency of the compressor 121 of the vehicle-mounted air conditioner can be reduced under the condition that the coil temperature remains unchanged, and the frequency band of the vehicle-mounted air conditioner can be ensured not to cross the frequency band of the engine 11, and resonance between the engine 11 and the vehicle-mounted air conditioner can be avoided.

[0087] It should be noted that in actual application, the frequency of the compressor 121 can be reduced by adjusting the opening angle of the electromagnetic expansion valve to a maximum opening angle, for example, the opening angle of the electromagnetic expansion valve can be adjusted to a set opening degree value, etc., and such flexible adjustment and change does not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application. Of course, preferably, the frequency of the compressor 121 is reduced by adjusting the opening angle of the electromagnetic expansion valve to a maximum opening angle.

[0088] It should be further noted that since the vehicle-mounted air conditioner uses direct current input, during operation of the vehicle-mounted air conditioner, the frequency of the vehicle-mounted air conditioner will change according to the change of the power of the battery, and therefore, the operating frequency of the vehicle-mounted air conditioner will also change according to the change of the input current of the battery.

[0089] Specifically, increasing the input current of the vehicle-mounted air conditioner will increase the suction and discharge pressure of the compressor 121, which will in turn cause the refrigerating capacity of the compressor 121 to have a rising trend. In order to maintain the indoor environment temperature at the preset temperature set by the user, the vehicle-mounted air conditioner will reduce the frequency of the compressor 121 to prevent the refrigerating capacity from being too high and causing the indoor environment temperature to decrease, thereby realizing the frequency reduction of the compressor 121.

[0090] Preferably, as shown in Figure 3 the step of "selectively adjusting the vehicle-mounted air conditioner according to the judgment result" specifically includes:

[0091] S3105: If the judgment result is "no", further acquiring the input current value I of the vehicle-mounted air conditioner;

[0092] S3106: judging whether the input current value I is less than the maximum input current value Imax;

[0093] selectively adjusting the vehicle-mounted air conditioner according to the judgment result.

[0094] Through such a setting, in the case where the judgment result is "no", it indicates that the opening angle of the electromagnetic expansion valve has reached the maximum opening angle, at this time, the frequency reduction of the compressor cannot be further processed by adjusting the opening angle of the electromagnetic expansion valve. By further acquiring the input current value of the vehicle-mounted air conditioner and judging whether the input current value is less than the maximum input current value, the vehicle-mounted air conditioner can be selectively adjusted according to the input current value to reduce the frequency of the compressor 121, thereby ensuring that the frequency band of the vehicle-mounted air conditioner does not cross the frequency band of the engine 11, and resonance between the engine 11 and the vehicle-mounted air conditioner can be avoided.

[0095] Preferably, as shown in Figure 3As shown, the specific steps of "selectively adjusting the vehicle air conditioner according to the judgment result" include:

[0096] S3107: If the judgment result is "no", the input current value of the vehicle air conditioner is adjusted to the maximum input current value.

[0097] Through such a setting, in the case where the judgment result is "no", it indicates that the input current value of the vehicle air conditioner is less than the maximum input current value, by adjusting the input current value of the vehicle air conditioner to the maximum input current value, the suction and discharge pressure of the compressor can be improved, and in the case where the coil temperature is unchanged, the vehicle air conditioner will reduce the frequency to avoid the coil temperature being too low due to excessive cooling capacity, that is, the frequency reduction processing of the vehicle air conditioner can be realized, the frequency band of the vehicle air conditioner is avoided to cross the frequency band of the engine, and resonance between the engine and the vehicle air conditioner can be avoided.

[0098] Preferably, as shown, the specific steps of "selectively adjusting the vehicle air conditioner according to the judgment result" include: Figure 3

[0099] S3108: If the judgment result is "yes", the current running mode of the vehicle air conditioner is further acquired;

[0100] S3109: According to the current running mode, the preset temperature set by the user is adjusted.

[0101] Through such a setting, in the case where the judgment result is "yes", it indicates that the input current value of the vehicle air conditioner has also reached the maximum input current value, and the frequency of the compressor cannot be reduced by adjusting the input current value of the vehicle air conditioner, at this time, by acquiring the current running mode of the vehicle air conditioner and adjusting the preset temperature set by the user according to the current running mode, the difference between the actual environment temperature in the vehicle and the preset temperature can be reduced, and the cooling or heating demand of the air conditioner can be reduced, thereby reducing the energy consumption of the air conditioner and the frequency of the compressor.

[0102] Preferably, the step of "adjusting the preset temperature set by the user according to the current running mode" specifically includes:

[0103] If the current running mode is a cooling mode, the preset temperature is adjusted to be higher to reduce the frequency of the compressor.

[0104] Through such a setting, if the current running mode is a cooling mode, adjusting the preset temperature to be higher can reduce the difference between the actual environment temperature in the vehicle and the preset temperature, thereby reducing the cooling demand, reducing the energy consumption of the air conditioner, and further reducing the frequency of the compressor 121.

[0105] Preferably, the step of "adjusting the preset temperature set by the user according to the current running mode" specifically includes: ​

[0106] If the current operation mode is the heating mode, the preset temperature is adjusted lower to reduce the frequency of the compressor.

[0107] Through such a setting, if the current operation mode is the heating mode, adjusting the preset temperature lower can reduce the difference between the actual environment temperature in the vehicle and the preset temperature, thereby reducing the heating demand, reducing the energy consumption of the air conditioner, and further reducing the frequency of the compressor 121.

[0108] It should be noted that in actual application, the preset temperature can be directly adjusted to the set temperature by those skilled in the art to reduce the frequency of the compressor 121, or the preset adjustment amount can be obtained first, and then the target temperature is calculated according to the preset adjustment amount, and the preset temperature is adjusted to the target temperature, and the like. Adjustment and change of such specific adjustment mode of the preset temperature do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0109] Preferably, the step of "adjusting the preset temperature" specifically comprises:

[0110] obtaining a preset adjustment amount;

[0111] calculating a target temperature according to the preset adjustment amount;

[0112] adjusting the preset temperature to the target temperature.

[0113] Through such a setting, compared with the form of directly adjusting the preset temperature to the set temperature, through the form of obtaining the preset adjustment amount first, then calculating the target temperature according to the preset adjustment amount, and adjusting the preset temperature to the target temperature, the preset temperature can be reasonably adjusted on the basis of the preset temperature according to the preset adjustment amount. On the one hand, it can avoid affecting the comfort of the environment in the vehicle due to the too large adjustment range; on the other hand, it can avoid the engine 11 and the compressor 121 from resonating due to the too small adjustment range and the failure to achieve the frequency reduction effect, thereby further improving the user's experience.

[0114] It should be noted that in actual application, the preset adjustment amount can be set in the form of percentage by those skilled in the art, or the preset adjustment amount can be set in the form of a specific temperature value, and the like. Adjustment and change of such specific setting form of the preset adjustment amount do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0115] Preferably, the preset adjustment amount is set in the form of a specific temperature value.

[0116] It should be noted that in actual applications, the specific value of the preset adjustment amount can be set according to experience, or the specific value of the preset adjustment amount can be set according to experience, and the like, and the adjustment and change of the specific setting mode of the preset adjustment amount do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0117] Preferably, the specific value of the preset adjustment amount is set according to experience.

[0118] Exemplarily, the preset adjustment amount is 1℃.

[0119] Preferably, the step of "calculating the target temperature according to the preset adjustment amount" specifically comprises:

[0120] The target temperature is calculated according to the following formula:

[0121] T=T0+△T;

[0122] Wherein, T is the target temperature (℃), T0 is the preset temperature (℃), and △T is the preset adjustment amount (℃).

[0123] It should be noted that in the case that the running mode of the vehicle air conditioner is the cooling mode, △T is positive, and in the case that the running mode of the vehicle air conditioner is the heating mode, △T is negative.

[0124] The preset temperature adjustment process of the present application will be described in detail below in combination with the following two cases.

[0125] Case 1:

[0126] The current running mode of the vehicle air conditioner is the cooling mode, the preset temperature is set to 25℃, and △T=1℃,

[0127] Then, the target temperature T=T0+△T=(25+1)℃=26℃;

[0128] That is, the preset temperature is adjusted to 26℃.

[0129] Case 2:

[0130] The current running mode of the vehicle air conditioner is the heating mode, the preset temperature is set to 25℃, and △T=-1℃,

[0131] Then, the target temperature T=T0+△T=(25-1)℃=24℃;

[0132] That is, the preset temperature is adjusted to 24℃.

[0133] It should be noted that in actual application, the preset temperature can be adjusted once by the person skilled in the art, or the frequency of the compressor 121 can be obtained again after the preset temperature is adjusted once, and if the frequency of the compressor 121 is still equal to the frequency of the engine 11, the preset temperature can be adjusted in turn, and the like, and such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0134] It should be noted that in actual application, the preset temperature set in the controller can be directly adjusted by the person skilled in the art, or the instruction for adjusting the preset temperature can be sent to the remote controller or the mobile device of the user, and the preset temperature is adjusted by the user, and the like, and such adjustment and change of the specific adjustment mode of the preset temperature do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0135] Preferably, the preset temperature set in the controller of the vehicle air conditioner is directly adjusted.

[0136] Preferably, as shown in Figure 3 The step of "selectively adjusting the vehicle air conditioner according to the comparison result" specifically includes:

[0137] S3110: If F < f, the current frequency fi of the compressor 121 is obtained at intervals of a set time;

[0138] S3111: According to the current frequency fi, it is judged whether the frequency of the compressor 121 is reduced;

[0139] According to the judgment result, the battery of the vehicle air conditioner is selectively charged.

[0140] Through such a setting, when the frequency F of the engine 11 of the vehicle is lower than the frequency f of the vehicle air conditioner, since the frequency of the compressor 121 of the vehicle air conditioner already contains the frequency of the engine 11, and since the vehicle air conditioner adopts direct current input, the current frequency of the compressor 121 is obtained at intervals of a set time during the operation of the vehicle air conditioner, and it is judged whether the frequency of the compressor 121 is reduced, and according to the judgment result, the battery of the vehicle air conditioner is selectively charged, so that the vehicle air conditioner can be charged in time when the frequency of the vehicle air conditioner is reduced, and the reduction of the frequency of the vehicle air conditioner caused by the reduction of the power of the battery of the vehicle air conditioner is avoided, and the frequency of the vehicle air conditioner is prevented from being reduced to the frequency of the engine to cause resonance.

[0141] It should be noted that in actual application, the current frequency of the compressor 121 is not necessarily obtained at intervals of a set time, and whether the frequency of the compressor 121 is reduced is determined according to the current frequency, and the battery of the vehicle air conditioner is selectively charged according to the determination result. For example, the current frequency of the compressor 121 can also be detected, and whether the current frequency is lower than a set value is determined, and the battery of the vehicle air conditioner is selectively charged according to the determination result.

[0142] Of course, preferably, the current frequency of the compressor 121 is obtained at intervals of a set time, and whether the frequency of the compressor 121 is reduced is determined according to the current frequency, and the battery of the vehicle air conditioner is selectively charged according to the determination result.

[0143] Preferably, as shown in Figure 3 the step of "selectively charging the battery of the vehicle air conditioner according to the determination result" includes:

[0144] S3112: If the determination result is "yes", the battery of the vehicle air conditioner is charged.

[0145] Through such a setting, if the determination result is "yes", it indicates that the battery of the vehicle air conditioner is reduced, and the battery of the vehicle air conditioner is charged in time, which can avoid the frequency of the vehicle air conditioner continuing to decrease due to insufficient power of the battery of the vehicle air conditioner, thereby avoiding the frequency of the vehicle air conditioner reducing to the same as the frequency of the engine, and further avoiding the engine 11 of the vehicle and the vehicle air conditioner from resonating.

[0146] Preferably, as shown in ​ the step of "selectively charging the battery of the vehicle air conditioner according to the determination result" includes:

[0147] If the determination result is "no", return to step S3110.

[0148] Through such a setting, if the determination result is "no", it indicates that the frequency of the vehicle air conditioner has not been reduced, i.e. the power of the vehicle air conditioner is sufficient, and further the battery of the vehicle air conditioner does not need to be charged, then the current frequency of the compressor 121 is obtained at intervals of a set time, and whether the frequency of the compressor 121 is reduced is determined, and when the frequency of the compressor 121 is reduced, the battery of the vehicle air conditioner is charged in time to avoid the frequency of the compressor 121 being reduced due to insufficient power and being consistent with the frequency of the engine.

[0149] It should be noted that in actual application, the battery of the vehicle air conditioner can be charged by the engine, or the battery of the vehicle air conditioner can be charged by an external charging device, and the like, and the adjustment and change of the specific mode of charging the battery of the vehicle air conditioner do not deviate from the principles and scope of the present application, and should be included in the protection scope of the present application.

[0150] Preferably, the battery of the vehicle air conditioner is charged by the engine 11.

[0151] The specific embodiments of the control method of the present application will be described in detail below in combination with the following cases.

[0152] Case 1:

[0153] If the engine frequency F=16HZ and the compressor frequency f of the vehicle air conditioner=13HZ, F>f, the vehicle air conditioner is not adjusted.

[0154] Case 2:

[0155] If the engine frequency F=16HZ and the compressor frequency f of the vehicle air conditioner=16HZ, F=f, if the opening and closing angle of the electromagnetic expansion valve of the vehicle air conditioner is less than the maximum opening and closing angle, the opening and closing angle of the electromagnetic expansion valve is adjusted to the maximum opening and closing angle.

[0156] Case 3:

[0157] If the engine frequency F=16HZ and the compressor frequency f of the vehicle air conditioner=16HZ, F=f, if the opening and closing angle of the electromagnetic expansion valve of the vehicle air conditioner is equal to the maximum opening and closing angle, and the input current value I of the vehicle air conditioner is less than the maximum input current value Imax, the input current value of the vehicle air conditioner is adjusted to the maximum input current value Imax.

[0158] Case 4:

[0159] If the engine frequency F=16HZ and the compressor frequency f of the vehicle air conditioner=16HZ, F=f, if the opening and closing angle of the electromagnetic expansion valve of the vehicle air conditioner is equal to the maximum opening and closing angle, and the input current value I of the vehicle air conditioner is equal to the maximum input current value Imax, if the current operation mode of the vehicle air conditioner is the cooling mode, the preset temperature is increased.

[0160] Case 5:

[0161] If the engine frequency F=16HZ and the compressor frequency f of the vehicle air conditioner=16HZ, F=f, if the opening and closing angle of the electromagnetic expansion valve of the vehicle air conditioner is equal to the maximum opening and closing angle, and the input current value I of the vehicle air conditioner is equal to the maximum input current value Imax, if the current operation mode of the vehicle air conditioner is the heating mode, the preset temperature is decreased.

[0162] Case 6:

[0163] If the engine frequency F = 16HZ, the compressor frequency f = 18HZ of the vehicle air conditioner, then F < f, and the frequency of the compressor 121 is reduced, and the battery of the vehicle air conditioner is charged.

[0164] In addition, the present application also provides a vehicle, which comprises a controller configured to be capable of executing the above-mentioned control method for the vehicle.

[0165] It should be noted that the controller is in communication connection with the engine 11 and the vehicle air conditioner, so as to realize intelligent acquisition of the frequency F of the engine 11 and the frequency f of the vehicle air conditioner.

[0166] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A control method for a vehicle, characterized by, The vehicle comprises an engine and a vehicle air conditioner for adjusting an indoor ambient temperature of the vehicle, and the control method comprises: acquiring a frequency F of the engine; acquiring a frequency f of a compressor of the vehicle air conditioner; comparing the frequency F of the engine with the frequency f of the compressor; selectively adjusting the vehicle air conditioner according to the comparison result; if F=f, further acquiring an opening angle θ of an electromagnetic expansion valve of the vehicle air conditioner; judging whether the opening angle θ is less than a maximum opening angle θmax; if the judgment result is "yes", adjusting the opening angle θ of the electromagnetic expansion valve to θmax; or, if the judgment result is "no", further acquiring an input current value I of the vehicle air conditioner; judging whether the input current value I is less than a maximum input current value Imax; selectively adjusting the vehicle air conditioner according to the judgment result.

2. The control method according to claim 1, characterized by, The step of "selectively adjusting the vehicle air conditioner according to the comparison result" specifically comprises: if F>f, not adjusting the vehicle air conditioner.

3. The control method according to claim 1, characterized by, The specific step of "selectively adjusting the vehicle air conditioner according to the judgment result" comprises: if the judgment result is "no", adjusting the input current value of the vehicle air conditioner to the maximum input current value Imax.

4. The control method according to claim 1, characterized by, The specific step of "selectively adjusting the vehicle air conditioner according to the judgment result" comprises: if the judgment result is "yes", further acquiring a current operation mode of the vehicle air conditioner; adjusting a preset temperature set by a user according to the current operation mode.

5. The control method according to claim 1, characterized by, The step of "selectively adjusting the vehicle air conditioner according to the comparison result" specifically comprises: if F<f, acquiring a current frequency fi of the compressor at intervals of a set time; judging whether the frequency of the compressor is reduced according to the current frequency fi; selectively charging a storage battery of the vehicle air conditioner according to the judgment result.

6. A vehicle characterized by comprising: The vehicle comprises a controller configured to be capable of executing the control method of any one of claims 1 to 5.

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