Control method for refrigeration system, related apparatus and storage medium

Abstract

The embodiments of the present application relate to the technical field of battery cooling. Provided are a control method for a refrigeration system, a related apparatus and a storage medium. The method comprises: when it is determined that the current ambient temperature is within a first preset temperature range, starting a water pump of a refrigeration system and a compressor of the refrigeration system; when it is determined that a first pressure corresponding to the refrigeration system reaches a preset pressure value, starting a fan of the refrigeration system, such that the pressure of the refrigeration system is kept within the preset pressure range to cool a battery management system; and when it is determined that the current ambient temperature is within a second preset temperature range, starting the water pump of the refrigeration system, and prohibiting the startup of the compressor and the fan.

Description

Control method of refrigeration system, related device and storage medium

[0001] The present application claims priority to the Chinese patent application No. 202410525864.9, filed on April 29, 2024, and entitled "Control method of refrigeration system, related device and storage medium", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of battery cooling technology, and in particular to a control method of a refrigeration system, a related device and a storage medium. BACKGROUND

[0003] Battery thermal management system (BTMS) has become a standard configuration of electric working machines. The working conditions of electric working machines are various, and there are many extreme working conditions, for example, the working environment temperature of the working machine is very low, for example, it can reach -30℃, or even lower. Although the working environment temperature of the working machine is very low, the battery of the working machine still has a cooling demand when it is charging and generating heat.

[0004] When the battery performs the cooling demand in a low-temperature working environment, the low-pressure side of the refrigeration system of the working machine is easily affected by the environment temperature and has a phenomenon that the low-pressure pressure of the refrigerant is too low, thereby causing the low-pressure pressure switch to be turned off, and further causing the BTMS system to be unable to perform protection work and the cooling demand of the battery to be unable to be achieved.

[0005] SUMMARY

[0006] The embodiments of the present application provide a control method of a refrigeration system, a related device and a storage medium, to solve the problem that the battery cannot be effectively cooled in a low-temperature environment in the prior art, and to achieve the purpose of effectively cooling the battery in a low-temperature environment.

[0007] The embodiments of the present application provide a control method of a refrigeration system, comprising:

[0008] In a case where it is determined that the current environment temperature is in a first preset temperature range, starting a water pump of the refrigeration system and a compressor of the refrigeration system, and in a case where it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value, maintaining the water pump and the compressor working;

[0009] In a case where it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value, starting a fan of the refrigeration system, so as to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system;

[0010] start the water pump of the refrigeration system and prohibit starting the compressor and the fan, wherein a maximum temperature of the second preset temperature range is less than or equal to a minimum temperature of the first preset temperature range.

[0011] The control method of the refrigeration system according to the embodiments of the present application, the starting the water pump of the refrigeration system and the compressor of the refrigeration system in the case of determining that the current environment temperature is in the first preset temperature range, comprises:

[0012] starting the water pump of the refrigeration system in the case of determining that the current environment temperature is in the first preset temperature range, and starting the compressor of the refrigeration system in the case that the running time of the water pump reaches a preset time.

[0013] The control method of the refrigeration system according to the embodiments of the present application, before the starting the water pump of the refrigeration system and the compressor of the refrigeration system in the case of determining that the current environment temperature is in the first preset temperature range, further comprises:

[0014] receiving the refrigeration demand sent by the battery management system;

[0015] detecting the current environment temperature based on the refrigeration demand;

[0016] determining whether the current environment temperature is in the first preset temperature range or the second preset temperature range in the case of determining that the current environment temperature is less than a preset temperature.

[0017] The control method of the refrigeration system according to the embodiments of the present application, after starting the fan of the refrigeration system, further comprises:

[0018] obtaining a second pressure corresponding to the refrigeration system;

[0019] adjusting at least one system operation parameter of the refrigeration system based on the second pressure, so as to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system, wherein the system operation parameter comprises: the wind speed of the fan, the starting of the fan, the closing of the fan, the rotating speed of the compressor and the rotating speed of the water pump.

[0020] The control method of the refrigeration system according to the embodiments of the present application, the target temperature range corresponding to the battery management system;

[0021] The adjusting at least one system operation parameter of the refrigeration system based on the second pressure comprises:

[0022] detecting a current water temperature corresponding to the battery management system;

[0023] adjust at least one system operating parameter of the refrigeration system based on the current water temperature, the target temperature range, and the second pressure.

[0024] The embodiment of the present application provides a control device of a refrigeration system, which comprises:

[0025] The first control module is configured to start a water pump of the refrigeration system and a compressor of the refrigeration system when it is determined that the current environment temperature is in a first preset temperature range, and to maintain the water pump and the compressor working when it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value.

[0026] The second control module is configured to start a fan of the refrigeration system to maintain the pressure of the refrigeration system in a preset pressure range for cooling the battery management system when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value.

[0027] The third control module is configured to start the water pump of the refrigeration system and to prohibit starting the compressor and the fan when it is determined that the current environment temperature is in a second preset temperature range, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0028] The embodiment of the present application also provides an interactive system for refrigeration, which comprises a refrigeration system and a battery management system, wherein the refrigeration system and the battery management system are communicatively connected.

[0029] The battery management system is configured to generate a refrigeration demand and to send the refrigeration demand to the refrigeration system.

[0030] The refrigeration system is configured to start a water pump of the refrigeration system and a compressor of the refrigeration system when it is determined that the current environment temperature is in a first preset temperature range, to maintain the water pump and the compressor working when it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value, to start a fan of the refrigeration system to maintain the pressure of the refrigeration system in a preset pressure range for cooling the battery management system when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value, and to start the water pump of the refrigeration system and to prohibit starting the compressor and the fan when it is determined that the current environment temperature is in a second preset temperature range, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0031] The embodiment of the present application also provides a working machine for implementing the steps of the control method of the refrigeration system.

[0032] The embodiment of the present application further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the control method of the refrigeration system when executing the program.

[0033] The embodiment of the present application further provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program implements the steps of the control method of the refrigeration system when executed by a processor.

[0034] The control method of the refrigeration system, the related device and the storage medium provided by the embodiment of the present application can realize preliminary cooling for the battery by starting the water pump of the refrigeration system and the compressor of the refrigeration system when it is determined that the current environment temperature belongs to the first preset temperature range, and maintaining the water pump and the compressor working when it is determined that the first pressure corresponding to the refrigeration system is less than the preset pressure value; and starting the fan of the refrigeration system when it is determined that the first pressure (refrigerant pressure) corresponding to the refrigeration system reaches the preset pressure value, so as to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system. It can be seen that, the fan is started based on the pressure of the refrigeration system, which can effectively avoid the occurrence of the phenomenon that the low-pressure side hydraulic pressure of the refrigeration system is too low, and further avoid the occurrence of the problem that the low-pressure pressure switch is disconnected and the BTMS cannot perform protection work, so that the normal and effective execution of the battery refrigeration demand is ensured, the purpose of effectively cooling the battery in a low-temperature environment is achieved, and the energy is saved while effectively cooling the battery in a low-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a flowchart of the control method of the refrigeration system provided by the embodiment of the present application.

[0036] FIG. 2 is a flowchart of the control method of the refrigeration system provided by the embodiment of the present application.

[0037] FIG. 3 is a flowchart of the control method of the refrigeration system provided by the embodiment of the present application.

[0038] FIG. 4 is a structural schematic diagram of the control device of the refrigeration system provided by the embodiment of the present application.

[0039] FIG. 5 is a structural schematic diagram of the interactive system for refrigeration provided by the embodiment of the present application.

[0040] FIG. 6 is a structural schematic diagram of an electronic device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] The embodiments of the present application provide a control method of a refrigeration system, which can be applied in working machines such as cranes, excavators, loaders, road rollers, etc., servers, and intelligent terminals. Hereinafter, the method applied in working machines is taken as an example for description, but it should be noted that this is only for example description and does not limit the protection scope of the present application. Some other descriptions in the embodiments of the present application are also for example description and do not limit the protection scope of the present application, and the following will not be described one by one.

[0043] The specific implementation of the method is shown in FIG. 1.

[0044] In step 101, when it is determined that the current environment temperature is in a first preset temperature range, the water pump of the refrigeration system and the compressor of the refrigeration system are started, and when it is determined that the first pressure corresponding to the refrigeration system is less than a preset pressure value, the water pump and the compressor are maintained to work.

[0045] The environment temperature is the temperature of the environment where the working machine is located, and the first preset temperature range is, for example, [-10℃, 5℃], which can be set by the user according to actual needs, and the present application does not make any limitation.

[0046] For example, when the current environment temperature is in [-10℃, 5℃], the water pump of the refrigeration system and the compressor of the refrigeration system are started.

[0047] In step 102, when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value, the fan of the refrigeration system is started to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system.

[0048] The pressure corresponding to the refrigeration system is the refrigerant pressure of the refrigeration system, the preset pressure is, for example, 1.4Mpa, and the preset pressure range is 0.8Mpa-2.2Mpa, which can be set by the user according to actual needs, and the present application does not make any limitation.

[0049] Specifically, in a case that the first pressure is less than the preset pressure, only the water pump and the compressor work, and the fan (corresponding to the condensing fan) does not work. With the working of the water pump and the compressor, the temperature of the refrigerant increases after heat exchange with the battery, and the pressure of the refrigerating system increases. If the fan is started in a case that the first pressure is less than the preset pressure, the pressure may be reduced to an abnormal value due to the cooling of the cooling pipeline (or the excessive cooling of the refrigerant) by the fan, thereby causing the low-pressure pressure switch to be turned off, and further causing the BTMS system to fail to perform the protection work, and the refrigeration demand of the battery to fail to be implemented. However, in a case that the first pressure is greater than or equal to the preset pressure, if the fan is started and the compressor and the fan work at the same time, the above problem will not occur. Therefore, the application starts the fan of the refrigerating system only in a case that the first pressure corresponding to the refrigerating system reaches the preset pressure value, thereby ensuring the normal implementation of the refrigeration demand of the battery.

[0050] In step 103, in a case that the current environment temperature is in the second preset temperature range, the water pump of the refrigerating system is started, and the starting of the compressor and the fan is prohibited.

[0051] The highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0052] The control method of the refrigerating system provided by the embodiments of the application can start the water pump of the refrigerating system and the compressor of the refrigerating system in a case that the current environment temperature is in the first preset temperature range, and implement the preliminary cooling for the battery by means of water circulation. Further, in a case that the first pressure (the refrigerant pressure) corresponding to the refrigerating system reaches the preset pressure value, the fan of the refrigerating system is started, so as to maintain the pressure of the refrigerating system in the preset pressure range for the cooling of the battery management system. It can be seen that, the application starts the fan based on the pressure of the refrigerating system, which can effectively avoid the occurrence of the phenomenon of excessively low liquid pressure on the low-pressure side of the refrigerating system, thereby avoiding the problem of the low-pressure pressure switch being turned off and the BTMS failing to perform the protection work, ensuring the normal and effective implementation of the refrigeration demand of the battery, and achieving the purpose of effectively cooling the battery in a low-temperature environment.

[0053] In one specific embodiment, before starting the water pump of the refrigerating system and the compressor of the refrigerating system in a case that the current environment temperature is in the first preset temperature range, or before starting the water pump of the refrigerating system and prohibiting the starting of the compressor and the fan in a case that the current environment temperature is in the second preset temperature range, the refrigeration demand sent by the battery management system is received; the current environment temperature is detected based on the refrigeration demand; and in a case that the current environment temperature is less than the preset temperature, it is determined whether the current environment temperature is in the first preset temperature range or the second preset temperature range.

[0054] The preset temperature is the lowest temperature of the first preset temperature range, for example, -10 DEG C.

[0055] The second preset temperature range is, for example, a temperature range lower than -10 DEG C, which is set by the user according to actual needs and the first preset temperature range, and the application does not make any limitation. The highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0056] Specifically, the battery management system monitors the battery temperature of the battery (or battery cell), generates a refrigeration demand when the battery temperature exceeds the preset temperature, and sends the refrigeration demand to the controller of the refrigeration system. The controller sends a temperature detection refrigeration to the detection component (for example, a temperature sensor). After the temperature sensor receives the temperature detection refrigeration, it detects the current environment temperature and returns it to the controller. The controller compares the obtained current environment temperature with the preset temperature, and determines whether the current environment temperature is in the first preset temperature range or the second preset temperature range when it is determined that the current environment temperature is less than the preset temperature.

[0057] Specifically, the refrigeration mode of the application includes: a normal refrigeration mode and a low-temperature refrigeration mode. When it is determined that the current environment temperature is greater than or equal to the preset temperature, the normal refrigeration mode is entered; when it is determined that the current environment temperature is less than the preset temperature, the low-temperature refrigeration mode is entered, and it is determined whether the current environment temperature is in the first preset temperature range or the second preset temperature range.

[0058] The refrigeration operation of the normal refrigeration mode corresponds to the refrigeration operation of the refrigeration system in the prior art, and the application does not make a specific description.

[0059] Specifically, when it is determined that the current environment temperature is less than the preset temperature, the low-temperature refrigeration mode is entered, and information indicating that the current time is in the low-temperature refrigeration mode is returned to the battery management system.

[0060] The application enters different refrigeration modes (different refrigeration modes correspond to different refrigeration strategies) by comparing the current environment temperature with the preset temperature, provides a more suitable refrigeration strategy for the cooling of the battery management system, and effectively improves the refrigeration efficiency of the battery management system.

[0061] In one specific embodiment, when it is determined that the current environment temperature is in the first preset temperature range, the specific implementation of starting the water pump of the refrigeration system and the compressor of the refrigeration system includes:

[0062] When it is determined that the current environment temperature is in the first preset temperature range, the water pump of the refrigeration system is started preferentially, and the compressor of the refrigeration system is started when the running time of the water pump reaches a preset time.

[0063] For example, in a case where it is determined that the current ambient temperature is in

-10℃, 5℃

[0064] In one embodiment, in a case where it is determined that the current ambient temperature is in the second preset temperature range, the water pump of the refrigeration system is started, and the compressor and the fan are prohibited from being started.

[0065] For example, in a case where it is determined that the current ambient temperature is lower than -10℃, the water pump of the refrigeration system is started, and the compressor and the fan are prohibited from being started.

[0066] In a case where the ambient temperature is low, the target temperature required by the battery (or cell) in the battery management system and the water temperature difference are large, generally greater than or equal to 36℃, in which case only the water pump is started, and the water circulation system can be used to achieve rapid cooling for the battery management system.

[0067] The target temperature belongs to a target temperature range corresponding to the battery management system, that is, the target temperature of the battery pack in the battery management system. The target temperature can be determined by a user according to actual needs or the properties of the battery.

[0068] In a case where the current ambient temperature is at the intersection point of the first preset temperature range and the second preset temperature range, the user can determine the refrigeration strategy according to actual needs.

[0069] In the embodiments of the present application, -10℃ is taken as an example of the intersection point of the first preset temperature range and the second preset temperature range. In a case where the current ambient temperature is -10℃, the water pump of the refrigeration system is preferentially started to run, and in a case where the running duration of the water pump reaches a preset duration, the compressor of the refrigeration system is started to run.

[0070] In a case where the ambient temperature is low, only the water pump is started, and the water circulation system can be used to achieve rapid cooling for the battery management system, thereby saving energy.

[0071] In one embodiment, after the fan of the refrigeration system is started, a second pressure corresponding to the refrigeration system is obtained; based on the second pressure, at least one system running parameter of the refrigeration system is adjusted to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system.

[0072] The system running parameter includes the wind speed of the fan, the start of the fan, the shutdown of the fan, the rotation speed of the compressor, and the rotation speed of the water pump.

[0073] Specifically, in the case that the first pressure is greater than or equal to the preset pressure, after starting the fan, the pressure (the second pressure) of the refrigeration system is monitored in real time, and at least one system operating parameter of the refrigeration system is adjusted in real time to ensure that the pressure of the refrigeration system is maintained within the preset pressure range.

[0074] For example, in the case that the second pressure is less than the minimum value of the preset pressure range, the fan is turned off, and the fan is turned on again in the case that the second pressure reaches the preset pressure; for another example, in the case that the second pressure is greater than the maximum value of the preset pressure range, the rotating speed of the fan and / or the rotating speed of the compressor is increased.

[0075] Specifically, the rotating speed of the water pump can adjust the flow rate and flow speed of the coolant or the antifreeze on the battery cooling path, and the faster the flow rate and / or the flow speed, the higher the temperature of the antifreeze per unit time (or the faster the temperature rise), the higher the temperature of the refrigerant after heat exchange per unit time, and the higher the refrigerant pressure. Therefore, the change of the refrigerant after heat exchange can be affected by adjusting the rotating speed of the water pump to adjust the cooling effect of the battery per unit time.

[0076] The application continues to detect the second pressure of the refrigeration system after the refrigeration system is normally operated, and at any time, the system operating parameter of the refrigeration system is switched according to the second pressure to ensure the smooth operation of the refrigeration system and to cool the battery management system within the preset pressure range.

[0077] In one specific embodiment, the battery management system corresponds to a target temperature range, and therefore the water temperature needs to be adjusted within the target temperature range to reduce the loss of the battery and prolong the service life of the battery.

[0078] To achieve the above-mentioned purpose, the application detects the current water temperature corresponding to the battery management system; and based on the current water temperature, the target temperature range and the second pressure, at least one system operating parameter of the refrigeration system is adjusted.

[0079] On the basis of ensuring that the pressure of the refrigeration system is maintained within the preset pressure range by detecting the second pressure, the water temperature is maintained within the target temperature range by adjusting the system operating parameter of the refrigeration system.

[0080] Next, the application will be specifically illustrated by means of FIG. 2:

[0081] Step 201: receiving the refrigeration demand sent by the battery management system, and acquiring the current environment temperature based on the refrigeration demand.

[0082] Step 202: determining whether the current environment temperature is less than a preset temperature, if yes, executing step 203, otherwise, executing step 211.

[0083] Step 203: entering a low-temperature refrigeration mode.

[0084] Step 204, judge whether the current environment temperature is in the first preset temperature range, if yes, execute step 205, otherwise, execute step 210.

[0085] Step 205, start the water pump of the refrigeration system, and start the compressor of the refrigeration system in the case that the running time of the water pump reaches the preset time.

[0086] Step 206, obtain the first pressure corresponding to the refrigeration system.

[0087] Step 207, judge whether the first pressure is greater than the preset pressure value, if yes, execute step 208, otherwise, execute step 205.

[0088] Step 208, start the fan of the refrigeration system.

[0089] Step 209, obtain the second pressure corresponding to the refrigeration system, and adjust at least one system running parameter of the refrigeration system based on the second pressure.

[0090] Step 210, start the water pump of the refrigeration system, and prohibit starting the compressor and the fan.

[0091] Step 211, enter the normal refrigeration mode.

[0092] Next, the present application is specifically illustrated by Fig. 3:

[0093] Step 301, obtain the current environment temperature, and enter the low-temperature refrigeration mode in the case that the current environment temperature is less than the preset temperature.

[0094] Step 302, start the water pump of the refrigeration system in the case that the current environment temperature is in the first preset temperature range, start the compressor of the refrigeration system in the case that the running time of the water pump reaches the preset time, and start the fan of the refrigeration system in the case that the first pressure corresponding to the refrigeration system reaches the preset pressure value, so as to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system.

[0095] Step 303, start the water pump of the refrigeration system in the case that the current environment temperature is in the second preset temperature range, and prohibit starting the compressor and the fan.

[0096] Wherein, the execution order of step 302 and step 303 is alternative.

[0097] The application starts the water pump of the refrigeration system to realize preliminary cooling of the battery in a water circulation manner in a case where it is determined that the current environment temperature belongs to a first preset temperature range; then, the compressor of the refrigeration system is started in a case where it is determined that the running duration of the water pump reaches a preset duration; the fan of the refrigeration system is started to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system in a case where it is determined that the first pressure corresponding to the refrigeration system reaches a preset pressure value. It can be seen that the fan is started again based on the pressure information after the compressor is started, which can effectively avoid the occurrence of the phenomenon that the low-pressure side of the refrigeration system is too low, thereby avoiding the problem that the low-pressure pressure switch is disconnected and the BTMS cannot perform protection work, ensuring that the battery refrigeration demand is normally and effectively executed, and realizing the purpose of effectively cooling the battery in a low-temperature environment. In a case where it is determined that the current environment temperature belongs to a second temperature range, the water pump of the refrigeration system is started, and the compressor and the fan are prohibited from being started, and the water circulation system can be used to realize rapid cooling of the battery management system.

[0098] The control device of the refrigeration system provided by the embodiment of the application is described below. The control device of the refrigeration system described below can be correspondingly referred to the control method of the refrigeration system described above. The repeated parts will not be described again. As shown in FIG. 4, the device comprises:

[0099] The first control module 401 is configured to start the water pump of the refrigeration system and the compressor of the refrigeration system in a case where it is determined that the current environment temperature is in a first preset temperature range, and maintain the water pump and the compressor working in a case where it is determined that the first pressure corresponding to the refrigeration system is less than a preset pressure value.

[0100] The second control module 402 is configured to start the fan of the refrigeration system to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system in a case where it is determined that the first pressure corresponding to the refrigeration system reaches a preset pressure value.

[0101] The third control module 403 is configured to start the water pump of the refrigeration system and prohibit starting the compressor and the fan in a case where it is determined that the current environment temperature is in a second preset temperature range, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0102] In one specific embodiment, the second control module 402 is specifically configured to start the water pump of the refrigeration system in a case where it is determined that the current environment temperature is in the first preset temperature range, and start the compressor of the refrigeration system in a case where the running duration of the water pump reaches a preset duration.

[0103] In one embodiment, the device further comprises a determination module configured to receive the cooling demand sent by the battery management system; detect the current ambient temperature based on the cooling demand; and determine whether the current ambient temperature is in a first preset temperature range or a second preset temperature range when it is determined that the current ambient temperature is less than a preset temperature.

[0104] In one embodiment, the device further comprises an adjustment module configured to obtain a second pressure corresponding to the refrigeration system; and adjust at least one system operating parameter of the refrigeration system based on the second pressure to maintain the pressure of the refrigeration system within a preset pressure range to cool the battery management system, wherein the system operating parameter comprises a fan speed of a fan, a start of the fan, a stop of the fan, a rotation speed of a compressor, and a rotation speed of a water pump.

[0105] In one embodiment, the battery management system corresponds to a target temperature range; and the adjustment module is further configured to detect a current water temperature corresponding to the battery management system; and adjust at least one system operating parameter of the refrigeration system based on the current water temperature, the target temperature range, and the second pressure.

[0106] Embodiments of the present application also provide an interactive system for refrigeration, as shown in FIG. 5, comprising a refrigeration system 501 and a battery management system 502, wherein the refrigeration system 501 and the battery management system 502 are connected through communication.

[0107] The battery management system 502 is configured to generate a cooling demand and send the cooling demand to the refrigeration system 502.

[0108] The refrigeration system 501 is configured to start a water pump and a compressor of the refrigeration system 501 based on the cooling demand when it is determined that a current ambient temperature is in a first preset temperature range, and maintain the water pump and the compressor working when it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value; start a fan of the refrigeration system 501 to maintain the pressure of the refrigeration system 501 within a preset pressure range to cool the battery management system 502 when it is determined that the first pressure corresponding to the refrigeration system 501 reaches the preset pressure value; and start the water pump of the refrigeration system and prohibit starting the compressor and the fan when it is determined that the current ambient temperature is in a second preset temperature range, wherein a maximum temperature of the second preset temperature range is less than or equal to a minimum temperature of the first preset temperature range.

[0109] In one embodiment, the refrigeration system 501 is specifically configured to start the water pump of the refrigeration system when it is determined that the current ambient temperature is in the first preset temperature range, and start the compressor of the refrigeration system when a running duration of the water pump reaches a preset duration.

[0110] In one specific embodiment, the refrigeration system 501 is specifically configured to receive a refrigeration requirement sent by the battery management system, detect a current ambient temperature based on the refrigeration requirement, and determine whether the current ambient temperature is in a first preset temperature range or a second preset temperature range in a case where it is determined that the current ambient temperature is less than a preset temperature.

[0111] In one specific embodiment, the refrigeration system 501 is specifically configured to obtain a second pressure corresponding to the refrigeration system, and adjust at least one system operation parameter of the refrigeration system based on the second pressure, so as to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system, wherein the system operation parameter includes a fan speed, a start of the fan, a stop of the fan, a rotation speed of a compressor, and a rotation speed of a water pump.

[0112] In one specific embodiment, the battery management system 502 corresponds to a target temperature range, and the refrigeration system 501 is specifically configured to detect a current water temperature corresponding to the battery management system, and adjust at least one system operation parameter of the refrigeration system based on the current water temperature, the target temperature range, and the second pressure.

[0113] The embodiments of the present application also provide a control method of a refrigeration system of a working machine.

[0114] In one specific embodiment, the working machine includes an excavator, a loader, a crane, and a road roller.

[0115] FIG. 6 shows a schematic diagram of an entity structure of an electronic device, as shown in FIG. 6, the electronic device can include a processor 601, a communications interface 602, a memory 603, and a communications bus 604, wherein the processor 601, the communications interface 602, and the memory 603 complete mutual communication through the communications bus 604. The processor 401 can invoke a logical instruction in the memory 603 to execute a control method of a refrigeration system, the method including: in a case where it is determined that a current ambient temperature is in a first preset temperature range, starting a water pump of the refrigeration system and a compressor of the refrigeration system, and in a case where it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value, maintaining the water pump and the compressor to work; in a case where it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value, starting a fan of the refrigeration system, so as to maintain the pressure of the refrigeration system in a preset pressure range to cool the battery management system; and in a case where it is determined that the current ambient temperature is in a second preset temperature range, starting the water pump of the refrigeration system, and prohibiting starting the compressor and the fan, wherein a highest temperature of the second preset temperature range is less than or equal to a lowest temperature of the first preset temperature range.

[0116] Further, the logic instructions in the memory 603 described above can be implemented in the form of software function units and sold or used as independent products, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0117] In another aspect, the present application also provides a computer program product, which comprises a computer program stored on a non-transitory computer readable storage medium, and the computer program comprises program instructions, when the program instructions are executed by a computer, the computer can execute the control method of the refrigeration system provided by the above-mentioned method, and the method comprises: starting the water pump of the refrigeration system and the compressor of the refrigeration system when it is determined that the current environment temperature is in a first preset temperature range, and maintaining the water pump and the compressor working when it is determined that the first pressure corresponding to the refrigeration system is less than a preset pressure value; starting the fan of the refrigeration system to maintain the pressure of the refrigeration system within a preset pressure range for the battery management system to cool down when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value; starting the water pump of the refrigeration system and prohibiting starting the compressor and the fan when it is determined that the current environment temperature is in a second preset temperature range, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0118] In yet another aspect, the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program, which, when executed by a processor, implements the control method of the refrigeration system as described above, the method comprising: starting the water pump of the refrigeration system and the compressor of the refrigeration system when it is determined that the current ambient temperature is in a first preset temperature range, and maintaining the water pump and the compressor working when it is determined that the first pressure corresponding to the refrigeration system is less than a preset pressure value; starting the fan of the refrigeration system to maintain the pressure of the refrigeration system in a preset pressure range for cooling the battery management system when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value; starting the water pump of the refrigeration system and prohibiting starting the compressor and the fan when it is determined that the current ambient temperature is in a second preset temperature range, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

[0119] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment scheme according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0120] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software plus necessary universal hardware platforms, and of course can also be realized by hardware. Based on such understanding, the above technical solutions, essentially or in other words, the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0121] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A control method of a refrigeration system, wherein, The method comprises the following steps: In the case that the current environment temperature is in the first preset temperature range, starting the water pump of the refrigeration system and the compressor of the refrigeration system, and in the case that the first pressure corresponding to the refrigeration system is less than the preset pressure value, maintaining the water pump and the compressor working; In the case that the first pressure corresponding to the refrigeration system reaches the preset pressure value, starting the fan of the refrigeration system to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system; In the case that the current environment temperature is in the second preset temperature range, starting the water pump of the refrigeration system, and prohibiting starting the compressor and the fan, wherein the highest temperature of the second preset temperature range is less than or equal to the lowest temperature of the first preset temperature range.

2. The control method of a refrigeration system according to claim 1, wherein, The method further comprises the following steps before starting the water pump of the refrigeration system and the compressor of the refrigeration system in the case that the current environment temperature is in the first preset temperature range: In the case that the current environment temperature is in the first preset temperature range, starting the water pump of the refrigeration system, and in the case that the running time of the water pump reaches the preset time, starting the compressor of the refrigeration system.

3. The control method of a refrigeration system according to claim 1, wherein, The method further comprises the following steps before starting the water pump of the refrigeration system and the compressor of the refrigeration system in the case that the current environment temperature is in the first preset temperature range: Receiving the refrigeration demand sent by the battery management system; Detecting the current environment temperature based on the refrigeration demand; In the case that the current environment temperature is less than the preset temperature, determining whether the current environment temperature is in the first preset temperature range or the second preset temperature range.

4. The control method of a refrigeration system according to any one of claims 1 to 3, wherein, The method further comprises the following steps after starting the fan of the refrigeration system: Obtaining the second pressure corresponding to the refrigeration system; Adjusting at least one system operation parameter of the refrigeration system based on the second pressure to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system, wherein the system operation parameter comprises the wind speed of the fan, the starting of the fan, the closing of the fan, the rotating speed of the compressor and the rotating speed of the water pump.

5. The control method of a refrigeration system according to claim 4, wherein, The battery management system corresponds to a target temperature range; The method further comprises the following steps of adjusting at least one system operation parameter of the refrigeration system based on the second pressure: Detecting the current water temperature corresponding to the battery management system; Adjusting at least one system operation parameter of the refrigeration system based on the current water temperature, the target temperature range and the second pressure.

6. A control device for a refrigeration system, wherein, The method comprises the following steps: The first control module is configured to start the water pump of the refrigeration system and the compressor of the refrigeration system in the case that the current environment temperature is in the first preset temperature range, and to maintain the water pump and the compressor working in the case that the first pressure corresponding to the refrigeration system is less than the preset pressure value; The second control module is configured to start the fan of the refrigeration system in the case that the first pressure corresponding to the refrigeration system reaches the preset pressure value to maintain the pressure of the refrigeration system in the preset pressure range to cool the battery management system; A third control module is configured to start a water pump of the refrigeration system and prohibit starting the compressor and the fan when it is determined that the current ambient temperature is in a second preset temperature range, wherein a maximum temperature of the second preset temperature range is less than or equal to a minimum temperature of the first preset temperature range.

7. An interactive system for refrigeration, wherein, The application relates to a refrigeration system and a control method thereof. The refrigeration system and the battery management system are communicatively connected. The battery management system is configured to generate a refrigeration demand and send the refrigeration demand to the refrigeration system. The refrigeration system is configured to start a water pump and a compressor of the refrigeration system when it is determined that a current ambient temperature is in a first preset temperature range based on the refrigeration demand, and maintain the water pump and the compressor working when it is determined that a first pressure corresponding to the refrigeration system is less than a preset pressure value. The refrigeration system is configured to start a fan of the refrigeration system to maintain the pressure of the refrigeration system in a preset pressure range for cooling the battery management system when it is determined that the first pressure corresponding to the refrigeration system reaches the preset pressure value; and start a water pump of the refrigeration system and prohibit starting the compressor and the fan when it is determined that the current ambient temperature is in a second preset temperature range, wherein a maximum temperature of the second preset temperature range is less than or equal to a minimum temperature of the first preset temperature range.

8. A work machine, wherein, The application further relates to a control method of the refrigeration system.

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein, The application further relates to a processor configured to implement the steps of the control method of the refrigeration system.

10. A non-transitory computer-readable storage medium, wherein, The application further relates to a computer program product, wherein the computer program product is stored on a computer readable medium and comprises computer readable instructions which, when executed by a processor, implement the steps of the control method of the refrigeration system.

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