Heat exchange control method, readable storage medium, heat exchange control device and heat exchange system

Abstract

The invention discloses a heat exchange control method, a readable storage medium, a heat exchange control device and a heat exchange system.The heat exchange control method comprises the steps that a first heat exchanger of the heat exchange system is controlled to operate at a first rotating speed, a second heat exchanger of the heat exchange system is controlled to operate at a second rotating speed, and the second rotating speed is smaller than the first rotating speed; temperature information is obtained, wherein the temperature information comprises at least one of environment temperature information and heat exchange system temperature information; if the temperature information meets set conditions, the second heat exchanger is controlled to operate at a third rotating speed larger than the first rotating speed, the set conditions represent that the power of the first heat exchanger reaches target power, and the target power corresponds to the target adjusting temperature. The second heat exchanger is controlled to operate while the first heat exchanger operates, so that discomfort caused by transient decrease of the environment temperature due to low starting temperature of the second heat exchanger when the second heat exchanger needs to be used for heating is effectively avoided, and the heating comfort of the heat exchange system is improved.

Description

Heat exchange control method, readable storage medium, heat exchange control device and heat exchange system Technical Field

[0001] The present application relates to the field of heat exchange control technology, and in particular to a heat exchange control method, a readable storage medium, a heat exchange control device, and a heat exchange system. Background Art

[0002] When electric vehicles use heat pumps for winter heating, the heat pump system is often affected by factors such as ambient temperature, humidity, frost on the outdoor heat exchanger, and system pressure, leading to insufficient heating performance. Therefore, mainstream electric vehicle heat pump systems currently incorporate PTC (Positive Temperature Coefficient) heaters to provide supplemental heating to ensure safe and comfortable winter driving. In related technologies, in low ambient temperatures, the heat pump mode is typically activated first for heating, followed by the PTC heating mode to heat the coolant in the warm air circulation system, thereby increasing the outlet air temperature.

[0003] Summary of the Invention

[0004] In view of this, one of the objectives of this application is to provide a heat exchange control method, comprising:

[0005] Controlling a first heat exchanger of the heat exchange system to operate at a first speed, and controlling a second heat exchanger of the heat exchange system to operate at a second speed, wherein the second speed is lower than the first speed;

[0006] Acquiring temperature information, where the temperature information includes at least one of ambient temperature information and heat exchange system temperature information; and

[0007] If the temperature information meets the set conditions, the second heat exchanger is controlled to operate at a third speed, which is greater than the first speed. The set conditions indicate that the power of the first heat exchanger reaches the target power, and the target power corresponds to the target adjustment temperature.

[0008] Furthermore, the ambient temperature information includes a temperature rise rate of the conditioned space; if the temperature information satisfies a set condition, controlling the second heat exchanger to operate at a third speed includes:

[0009] If the temperature climbing rate reaches the rate setting value, the second heat exchanger is controlled to operate at the third speed.

[0010] Furthermore, the temperature information of the heat exchange system includes the outlet air temperature, the water temperature of the water circulating in the heat exchange system, and the coolant temperature; if the temperature information meets the set conditions, controlling the second heat exchanger to operate at the third speed includes:

[0011] If the difference between any two of the air outlet temperature, the water temperature and the coolant temperature reaches a corresponding temperature difference set value, the second heat exchanger is controlled to operate at a third speed.

[0012] Furthermore, controlling the first heat exchanger of the heat exchange system to operate at a first speed and controlling the second heat exchanger of the air conditioner to operate at a second speed includes:

[0013] In response to a heating start instruction instructing the heat exchange system to enter a heating mode, the first heat exchanger is controlled to operate at a first speed and the second heat exchanger is controlled to operate at a second speed to perform heating.

[0014] Furthermore, the first heat exchanger is a heat pump, and the second heat exchanger is a warm air water pump.

[0015] Furthermore, if the temperature information satisfies a set condition, controlling the second heat exchanger to operate at a third speed includes:

[0016] The second heat exchanger is controlled to increase its speed from the second speed to the third speed in a step-by-step manner.

[0017] Furthermore, the ambient temperature information includes an ambient temperature value; the heat exchange control method includes: determining a temperature compensation value according to the target temperature value and the ambient temperature value,

[0018] A first rotational speed is determined according to the temperature compensation value.

[0019] Furthermore, temperature information is obtained, including:

[0020] After controlling the first heat exchanger of the heat exchange system to operate at a first speed and controlling the second heat exchanger of the heat exchange system to operate at a second speed, temperature information is obtained after setting a delay time.

[0021] A readable storage medium stores a program, which, when executed by a processor, implements the above-mentioned heat exchange control method.

[0022] A heat exchange control device includes one or more processors and is used in the above heat exchange control method.

[0023] A heat exchange system includes a first heat exchanger, a second heat exchanger, and the above-mentioned heat exchange control device, wherein the heat exchange control device is connected to the first heat exchanger and the second heat exchanger.

[0024] This application provides a heat exchange control method. This method controls a first heat exchanger in a heat exchange system to operate at a first speed and a second heat exchanger to operate at a second speed, where the second speed is less than the first speed, so that the heat exchange system is in a heat exchange state. Temperature information is obtained, and when the temperature information meets a set condition, the second heat exchanger is controlled to operate at a third speed. Because the third speed is greater than the second speed, this method facilitates regulating the surrounding ambient temperature. In this application, by controlling the second heat exchanger to operate at a low speed while the first heat exchanger is operating, and then increasing the speed of the second heat exchanger when the temperature reaches a certain level, the temperature can be better regulated, and the second heat exchanger can reach the desired speed more quickly, which can improve user comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] FIG1 is a flow chart of an exemplary embodiment of a heat exchange control method of the present application;

[0027] FIG2 is another flow chart of an exemplary embodiment of the heat exchange control method of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] FIG1 is a flow chart of an exemplary embodiment of the heat exchange control method of the present application. In the embodiment shown in FIG1 , the heat exchange control method includes steps 11-13:

[0030] Step 11: Control the first heat exchanger of the heat exchange system to operate at a first speed, and control the second heat exchanger of the heat exchange system to operate at a second speed, which is lower than the first speed. The first heat exchanger operates at the first speed to initially heat the surrounding environment. The second heat exchanger operates at the second speed, which is lower than the first speed. This maintains the second heat exchanger in a standby state and prevents the first heat exchanger from neutralizing the startup temperature of the second heat exchanger when the second heat exchanger is turned on, causing the ambient temperature to drop, thereby causing user discomfort.

[0031] Step 12: Obtain temperature information, which includes at least one of ambient temperature information and heat exchange system temperature information. In some embodiments, the ambient temperature information is used to represent data such as the ambient temperature of the space regulated by the heat exchange control system and the rate of increase of the ambient temperature. The heat exchange system temperature information is used to represent data such as the temperature of the water flowing within the heat exchange system, the outlet air temperature of the heat exchange system, and the coolant temperature.

[0032] Step 13: If the temperature information satisfies a set condition, the second heat exchanger is controlled to operate at a third speed, which is greater than the first speed. The set condition indicates that the power of the first heat exchanger has reached the target power, and the target power corresponds to the target adjustment temperature. In some embodiments, the set condition may indicate that the power of the first heat exchanger has reached the target power. At this time, the first heat exchanger operating at the target adjustment temperature cannot provide a better heating effect for the surrounding environment, and it is necessary to continue heating by operating the second heat exchanger to further optimize the surrounding temperature and improve user comfort. If the temperature information does not meet the set condition, that is, the first heat exchanger may not have reached the target power, and a better heat exchange effect can still be achieved by continuing to operate the first heat exchanger, or the heat exchange effect of the first heat exchanger cannot enable the second heat exchanger to operate better, the second heat exchanger is controlled to continue operating at the second speed.

[0033] In some embodiments, the second speed is less than the first speed, and the speed range of the second speed can be 1000-2000 revolutions per minute. This speed is used to put the second heat exchanger in a standby working state, which is more energy-efficient than fully opening the second heat exchanger. At the same time, this speed ensures that when the second heat exchanger operates at a higher power, there is no need to compensate the temperature of the second heat exchanger itself with the ambient temperature.

[0034] In some embodiments, the third speed is greater than the first speed, and the range of the third speed can be greater than or equal to 3000 revolutions per minute. Controlling the second heat exchanger to operate at this speed is conducive to achieving further heating of the second heat exchanger on the basis of heating of the first heat exchanger to increase the ambient temperature.

[0035] In some embodiments, the ambient temperature information includes a rate of temperature rise of the conditioned space.

[0036] Step 13: If the temperature information meets the set conditions, controlling the second heat exchanger to operate at a third speed includes:

[0037] If the temperature climb rate reaches the set rate value, the second heat exchanger is controlled to operate at the third speed. The temperature climb rate can be used to indicate the temperature rise of the conditioned space and the operating status of the first heat exchanger. When the temperature climb rate reaches the set rate value, it indicates that the first heat exchanger has reached the target power. At this time, if further heat exchange is required, the second heat exchanger should be controlled to operate at the third speed.

[0038] In some embodiments, the heat exchange system temperature information includes the outlet air temperature, the temperature of the water circulating in the heat exchange system, and the coolant temperature. The outlet air temperature, the temperature of the water circulating in the heat exchange system, and the coolant temperature can be used to indicate the operating status of the heat exchange system, thereby determining whether the operating power of the first heat exchanger has reached the target power and, further, whether the second heat exchanger needs to operate at the third speed.

[0039] Step 13: If the temperature information meets the set conditions, controlling the second heat exchanger to operate at a third speed includes:

[0040] If the difference between any two of the outlet air temperature, water temperature, and coolant temperature reaches the corresponding set temperature difference value, the second heat exchanger is controlled to operate at the third speed. This indicates that the first heat exchanger's heating function has achieved a certain balance between any two of the outlet air temperature, water temperature, and coolant temperature, or a certain balance between the three. This indicates that the first heat exchanger has reached the target power corresponding to the target adjustment temperature and has achieved a relatively good heating effect. If continued heating is required, the second heat exchanger is controlled to operate at the third speed to achieve higher heating power.

[0041] In some embodiments, step 11 controls the first heat exchanger of the heat exchange system to operate at a first speed, and controls the second heat exchanger of the air conditioner to operate at a second speed, including:

[0042] In response to a heating-on command instructing the heat exchange system to enter heating mode, the first heat exchanger is controlled to operate at a first speed and the second heat exchanger is controlled to operate at a second speed to provide heating. After the user turns on the heat exchange system, the heating-on command to enter heating mode controls the first heat exchanger to operate at the first speed for heating, while simultaneously controlling the second heat exchanger to operate in standby mode at the second speed. This helps reduce energy consumption when operating at both speeds simultaneously, prevents a sudden drop in ambient temperature when the second heat exchanger is subsequently turned on, and improves comfort.

[0043] In some embodiments, the first heat exchanger is a heat pump, and the second heat exchanger is a warm water pump. While the first heat exchanger is electrically heated, the warm water pump gradually increases its temperature. When the warm water pump reaches the target temperature, the warm water pump is primarily used for heating. This facilitates energy conservation and environmental protection in the heating mode of the heat exchange system, while also reducing the cost of using the heating mode, resulting in a highly cost-effective solution.

[0044] In some embodiments, if the temperature information satisfies a set condition, step 13 controls the second heat exchanger to operate at a third speed, including:

[0045] The second heat exchanger is controlled to increase its speed in a stepwise manner from the second speed to the third speed. The stepwise increase from the second speed to the third speed can effectively ensure the working stability of the second heat exchanger, which is beneficial to improving the safety performance of the heat exchange system while accelerating the heating process.

[0046] FIG2 is another flow chart of an exemplary embodiment of the heat exchange control method of the present application. In some embodiments, as shown in FIG2 , the ambient temperature information includes an ambient temperature value. The ambient temperature value is used to represent the initial temperature of the conditioned space. The heat exchange control method includes steps 21-22:

[0047] Step 21 determines a temperature compensation value based on the target temperature value and the ambient temperature value. After the temperature compensation value is determined, it can be determined at what power the second heat exchanger should operate to ultimately compensate for the temperature compensation value.

[0048] Step 22 determines a first speed based on the temperature compensation value. In some embodiments, the first speed can be adjusted based on different temperature compensation values. Specifically, the larger the temperature compensation value, the more energy the heat exchange system requires for heating. In this case, the first speed will be relatively faster to reach the set heating temperature within the set time.

[0049] In some embodiments, step 12 of obtaining temperature information includes:

[0050] After controlling the first heat exchanger in the heat exchange system to operate at a first speed and the second heat exchanger in the heat exchange system to operate at a second speed, a set delay is set before acquiring temperature information. In some cases, users may want to operate different modes of the heat exchange system by setting fixed time periods. This delay can be set before acquiring temperature information to control the speed of the second heat exchanger.

[0051] The present application provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the above-mentioned heat exchange control method.

[0052] In some embodiments, a heat exchange control device may also be provided, the heat exchange control device including one or more processors for executing the heat exchange control method.

[0053] The heat exchange control method provided herein can be used in a heat exchange system comprising a first heat exchanger, a second heat exchanger, and a heat exchange control device connected to the first and second heat exchangers. In some embodiments, the heat exchange control device optimizes the heating mode of the heat exchange system by controlling the different operating states of the first and second heat exchangers. This ensures that when the first heat exchanger switches to the second heat exchanger, the ambient temperature remains stable, thereby enhancing user comfort.

[0054] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to the partial description of the method embodiments. The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without expending creative work.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0056] The above is a detailed introduction to the methods and devices provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the methods and core ideas of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A heat exchange control method, It is characterized in that include: Controlling a first heat exchanger of a heat exchange system to operate at a first speed, and controlling a second heat exchanger of the heat exchange system to operate at a second speed, wherein the second speed is less than the first speed; Acquiring temperature information, wherein the temperature information includes at least one of ambient temperature information and heat exchange system temperature information; and If the temperature information meets the set condition, the second heat exchanger is controlled to operate at a third speed, and the third speed is greater than the first speed. The set condition indicates that the power of the first heat exchanger reaches the target power, and the target power corresponds to the target adjustment temperature.

2. The method according to claim 1, It is characterized in that The ambient temperature information includes a temperature rise rate of the conditioned space; if the temperature information satisfies a set condition, controlling the second heat exchanger to operate at a third speed includes: If the temperature climbing rate reaches the rate setting value, the second heat exchanger is controlled to operate at a third speed.

3. The heat exchange control method according to claim 1, It is characterized in that The temperature information of the heat exchange system includes the outlet air temperature, the water temperature of the water circulating in the heat exchange system, and the coolant temperature; if the temperature information meets the set conditions, controlling the second heat exchanger to operate at the third speed includes: If the difference between any two of the outlet air temperature, the water temperature and the coolant temperature reaches a corresponding temperature difference setting value, the second heat exchanger is controlled to operate at a third speed.

4. The heat exchange control method according to claim 1, It is characterized in that The method of controlling the first heat exchanger of the heat exchange system to operate at a first speed and controlling the second heat exchanger of the air conditioner to operate at a second speed comprises: In response to a heating start instruction instructing the heat exchange system to enter a heating mode, the first heat exchanger is controlled to operate at a first speed, and the second heat exchanger is controlled to operate at a second speed to perform heating.

5. The heat exchange control method according to claim 1, It is characterized in that The first heat exchanger is a heat pump, and the second heat exchanger is a warm air water pump.

6. The heat exchange control method according to claim 1, It is characterized in that If the temperature information satisfies a set condition, controlling the second heat exchanger to operate at a third speed includes: The second heat exchanger is controlled to increase stepwise from the second speed to the third speed.

7. The heat exchange control method according to claim 1, It is characterized in that The ambient temperature information includes an ambient temperature value; the heat exchange control method includes: Determine the temperature compensation value according to the target temperature value and the ambient temperature value, The first rotation speed is determined according to the temperature compensation value.

8. The heat exchange control method according to claim 1, It is characterized in that The obtaining of temperature information comprises: After the first heat exchanger of the heat exchange system is controlled to run at a first speed and the second heat exchanger of the heat exchange system is controlled to run at a second speed, the temperature information is acquired after a delay time is set.

9. A readable storage medium, It is characterized in that A program is stored thereon, and when the program is executed by a processor, the heat exchange control method as described in any one of claims 1 to 8 is implemented.

10. A heat exchange control device, It is characterized in that The method comprises one or more processors for executing the heat exchange control method according to any one of claims 1 to 8.

11. A heat exchange system, It is characterized in that The heat exchanger comprises a first heat exchanger, a second heat exchanger, and a heat exchange control device as claimed in claim 10, wherein the heat exchange control device is connected to the first heat exchanger and the second heat exchanger.

Images