Water chilling unit control method and device, new energy automobile and storage medium

Abstract

The invention discloses a water chilling unit control method and device, a new energy automobile and a storage medium. The water chilling unit comprises a compressor, and the control method of the water chilling unit comprises the steps that after the water chilling unit receives a preheating instruction, a three-phase compressor coil of the compressor is controlled to operate according to a target work cycle; wherein the target work period sequentially injects a target current of a second target time length for each phase of compressor coil at an interval of a first target time length; and the water chilling unit is controlled to operate for at least one target work period, so that preheating of the water chilling unit is completed. Preheating of the water cooling unit is achieved, smooth starting of the draught fan is guaranteed, and the service life of the draught fan is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and particularly to a control method and device for a water-cooled unit, a new energy vehicle, and a storage medium. Background Art

[0002] With the wide application of electric new energy heavy trucks, water-cooled thermal management has become more and more common. The water-cooled thermal management unit is responsible for cooling the battery during battery charging and discharging, and dissipating heat through a medium via a condenser.

[0003] In recent years, with the increase in battery density, it has changed from the original 284 kWh to the current 400 kWh and even 600 kWh, and the charging rate has changed from the original 0.5C to the current 1C charging rate. The heat dissipation is also getting larger, and the requirements for the heat dissipation of the water-cooled unit are getting higher. Due to the limited overall height of the mining truck, while increasing the number of batteries, the height of the batteries increases, which means that the height of the water-cooled unit needs to be reduced, from the original overall height of 290 to the current overall height of 210. Therefore, a new layout method for the fan needs to be considered, and the fan needs to change from the original side air outlet to the current top air outlet, but there is a possibility that the motor may be frozen by frost, snow, rain, or sleet with the top air outlet. Summary of the Invention

[0004] The present invention provides a control method and device for a water-cooled unit, a new energy vehicle, and a storage medium to solve the problem that the motor may be frozen by frost, snow, rain, or sleet with the top air outlet in the current application of the water-cooled unit.

[0005] According to an aspect of the present invention, a control method for a water-cooled unit is provided. The water-cooled unit includes a compressor, and the control method for the water-cooled unit includes:

[0006] After the water-cooled unit receives a preheating instruction, controlling the three-phase compressor winding of the compressor to operate with a target working cycle; wherein, the target working cycle is that a target current with a second target time length is injected into each phase of the compressor winding at intervals of a first target time length;

[0007] Controlling the water-cooled unit to operate for at least one target working cycle to complete the preheating of the water-cooled unit.

[0008] Optionally, the three-phase compressor winding includes a phase-A compressor winding, a phase-B compressor winding, and a phase-C compressor winding;

[0009] Controlling the three-phase compressor winding of the compressor to operate with a target working cycle includes:

[0010] Control the A-phase compressor winding, the B-phase compressor winding, and the C-phase compressor winding of the compressor in sequence, and inject the target current for the second target time length after an interval of the first target time length.

[0011] Optionally, controlling the three-phase compressor windings of the compressor to operate with a target duty cycle includes:

[0012] Control the A-phase compressor winding of the compressor to inject the target current for the second target time length. After an interval of the first target time length, control the B-phase compressor winding of the compressor to inject the target current for the second target time length. After another interval of the first target time length, control the C-phase compressor winding of the compressor to inject the target current for the second target time length.

[0013] Optionally, the water-cooled unit control method further includes:

[0014] Control the A-phase compressor winding of the compressor to inject the target current for the second target time length, and the B-phase compressor winding and the C-phase compressor winding discharge current to generate heat; and,

[0015] Control the B-phase compressor winding of the compressor to inject the target current for the second target time length, and the A-phase compressor winding and the C-phase compressor winding discharge current to generate heat; and,

[0016] Control the C-phase compressor winding of the compressor to inject the target current for the second target time length, and the A-phase compressor winding and the B-phase compressor winding discharge current to generate heat.

[0017] Optionally, the water-cooled unit includes a compressor control circuit. The compressor control circuit includes an A-phase upper bridge arm, a B-phase upper bridge arm, and a C-phase upper bridge arm. The three-phase compressor windings include an A-phase compressor winding, a B-phase compressor winding, and a C-phase compressor winding;

[0018] Controlling the three-phase compressor windings of the compressor to operate with a target duty cycle includes:

[0019] Control the A-phase upper bridge arm to conduct, and the A-phase compressor winding injects the target current for the second target time length;

[0020] Control the B-phase upper bridge arm to conduct, and the B-phase compressor winding injects the target current for the second target time length;

[0021] Control the C-phase upper bridge arm to conduct, and the C-phase compressor winding injects the target current for the second target time length.

[0022] Optionally, the compressor control circuit further includes a lower arm of phase A line, a lower arm of phase B line, and a lower arm of phase C line;

[0023] The water-cooled unit control method further includes:

[0024] While controlling the upper arm of phase A line to conduct, controlling the lower arm of phase B line and the lower arm of phase C line to conduct, and the current flowing out of the phase B compressor winding and the phase C compressor winding generates heat;

[0025] While controlling the upper arm of phase B line to conduct, controlling the lower arm of phase A line and the lower arm of phase C line to conduct, and the current flowing out of the phase A compressor winding and the phase C compressor winding generates heat;

[0026] While controlling the upper arm of phase C line to conduct, controlling the lower arm of phase A line and the lower arm of phase B line to conduct, and the current flowing out of the phase A compressor winding and the phase B compressor winding generates heat.

[0027] Optionally, the water-cooled unit control method further includes:

[0028] Obtaining the current ambient temperature of the environment where the water-cooled unit is located, and generating the preheating instruction according to the current ambient temperature.

[0029] According to another aspect of the present invention, there is provided a water-cooled unit control device, the water-cooled unit includes a compressor, and the water-cooled unit control device includes:

[0030] A target duty cycle operation module, configured to, after the water-cooled unit receives a preheating instruction, control the three-phase compressor windings of the compressor to operate with a target duty cycle; wherein, the target duty cycle is that each phase of the compressor winding injects a target current for a second target time length at intervals of a first target time length;

[0031] A preheating control module, configured to control the water-cooled unit to operate for at least one target duty cycle to complete the preheating of the water-cooled unit.

[0032] According to another aspect of the present invention, there is provided a new energy vehicle, the new energy vehicle includes a thermal management system, the thermal management system includes a water-cooled unit, and the water-cooled unit includes a compressor;

[0033] The thermal management system further includes:

[0034] At least one processor; and,

[0035] A memory communicatively connected to the at least one processor; wherein,

[0036] The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor is enabled to execute the water-cooled unit control method according to any embodiment of the present invention.

[0037] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the water-cooled unit control method according to any embodiment of the present invention when executed.

[0038] In the technical solution of the embodiment of the present invention, the water-cooled unit includes a compressor. After the water-cooled unit receives a preheating instruction, the three-phase compressor winding of the compressor is controlled to operate with a target duty cycle; wherein, the target duty cycle is that a target current with a second target time length is injected into each phase of the compressor winding at intervals of a first target time length; the water-cooled unit is controlled to operate for at least one target duty cycle to complete the preheating of the water-cooled unit. The present invention solves the problem that in the current application of water-cooled units, the top air outlet of the fan may freeze the motor due to wind, frost, rain and snow, realizes the preheating of the water-cooled unit, ensures the smooth start of the fan, and thus increases the service life of the fan.

[0039] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0041] Figure 1 is a flowchart of a water-cooled unit control method according to an embodiment of the present invention;

[0042] Figure 2 is a schematic structural diagram of a compressor control circuit according to an embodiment of the present invention;

[0043] Figure 3 is a schematic structural diagram of a compressor according to an embodiment of the present invention;

[0044] Figure 4 is a schematic structural diagram of a water-cooled unit control device according to an embodiment of the present invention;

[0045] Figure 5It is a schematic structural diagram of a new energy vehicle for implementing the water-cooled unit control method of the embodiments of the present invention. Detailed implementation manners

[0046] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] Figure 1 The embodiment of the present invention provides a flowchart of a water-cooled unit control method. This embodiment is applicable to the situation of preventing the motor shaft of the top-out fan from being frozen and preheating the water-cooled unit. The water-cooled unit control method can be executed by a water-cooled unit control device, which can be implemented in the form of hardware and / or software, and the water-cooled unit control device can be configured in a new energy vehicle. The new energy vehicle includes a thermal management system, the thermal management system includes a water-cooled unit, and the water-cooled unit includes a compressor. As Figure 1 shown, the water-cooled unit control method includes:

[0049] S110. After the water-cooled unit receives a preheating instruction, control the three-phase compressor winding of the compressor to operate with a target duty cycle; wherein, the target duty cycle is that each phase of the compressor winding injects a target current with a second target time length at intervals of a first target time length.

[0050] Among them, the preheating instruction can be generated by a control device such as a controller for controlling the water-cooled unit in the new energy vehicle. The preheating instruction is used to start the preheating process of the water-cooled unit, and the specific form of the preheating instruction is not limited in this embodiment.

[0051] Specifically, after the water-cooled unit receives the preheating instruction, it controls the three-phase compressor winding of the compressor to inject a target current to control the water-cooled unit to perform the preheating process. The target current can be adjusted according to the actual situation. In this embodiment, no special limitation is imposed on the specific value of the target current. Optionally, the target current can be 8A.

[0052] The first target time length is the interval time length for injecting the target current into each phase of the compressor winding in sequence. That is, after injecting the target current into the A-phase compressor winding of the compressor, after an interval of the first target time length, inject the target current into the B-phase compressor winding of the compressor, and then after an interval of the first target time length, inject the target current into the C-phase compressor winding of the compressor. The first target time length can be adjusted according to the actual situation. In this embodiment, no special limitation is imposed on the specific value of the first target time length. Optionally, the first target time length can be 3s.

[0053] The second target time length is the specific time length for injecting the target current into each phase of the compressor winding in sequence. That is, after injecting the target current of the second target time length into the A-phase compressor winding of the compressor, after an interval of the first target time length, inject the target current of the second target time length into the B-phase compressor winding of the compressor, and then after an interval of the first target time length, inject the target current of the second target time length into the C-phase compressor winding of the compressor. The second target time length can be adjusted according to the actual situation. In this embodiment, no special limitation is imposed on the specific value of the second target time length. Optionally, the second target time length can be 10s.

[0054] It can be understood that in one target working cycle, it is necessary to ensure that each phase of the compressor winding injects the target current for the second target time length, but no special limitation is imposed on the specific order of injecting the target current of the second target time length into the A-phase, B-phase, and C-phase compressor windings of the compressor. That is, the target current of the second target time length can be injected into the A-phase compressor winding of the compressor first, or the target current of the second target time length can be injected into the B-phase compressor winding of the compressor first, or the target current of the second target time length can be injected into the C-phase compressor winding of the compressor first.

[0055] In this embodiment, the three-phase compressor winding includes an A-phase compressor winding, a B-phase compressor winding, and a C-phase compressor winding. After controlling the A-phase compressor winding, B-phase compressor winding, and C-phase compressor winding of the compressor at intervals of a first target time length, a target current is injected for a second target time length to alternately inject current into each phase of the compressor winding, avoiding uneven preheating temperature of the water-cooled unit. Exemplarily, it is: controlling the A-phase compressor winding of the compressor to inject a target current for a second target time length, and after an interval of the first target time length, controlling the B-phase compressor winding of the compressor to inject a target current for a second target time length, and after another interval of the first target time length, controlling the C-phase compressor winding of the compressor to inject a target current for a second target time length.

[0056] Since the injected current is injected into one phase, and there is no current injection into the other two phases, the stator cannot form a rotating magnetic field, and at this time, the magnetic field will not generate alternation, so the fan does not operate. On this basis, the preheating process of the water-cooled unit is as follows: controlling the A-phase compressor winding of the compressor to inject a target current for a second target time length, and the B-phase compressor winding and C-phase compressor winding flow out current to generate heat; and, controlling the B-phase compressor winding of the compressor to inject a target current for a second target time length, and the A-phase compressor winding and C-phase compressor winding flow out current to generate heat; and, controlling the C-phase compressor winding of the compressor to inject a target current for a second target time length, and the A-phase compressor winding and B-phase compressor winding flow out current to generate heat.

[0057] Exemplarily, continue to refer to Figure 2 and Figure 3 As shown, taking the first target time length as 3 s, the second target time length as 10 s, and the target current as 8 A as an example, the resistance R of each phase of the compressor winding in the compressor is 0.25 Ω. A specific target working cycle is as follows: controlling the A-phase compressor winding of the compressor to inject a target current of 8 A for a second target time length of 10 s, generating heat of approximately I*I*R = 16 W, and the B-phase compressor winding and C-phase compressor winding flow out current of 4 A to generate heat, generating heat of approximately I*I*R = 4 W; and, after an interval of the first target time length of 3 s, controlling the B-phase compressor winding of the compressor to inject a target current of 8 A for a second target time length of 10 s, generating heat of approximately I*I*R = 16 W, and the A-phase compressor winding and C-phase compressor winding flow out current of 4 A to generate heat, generating heat of approximately I*I*R = 4 W; and, after an interval of the first target time length of 3 s, controlling the C-phase compressor winding of the compressor to inject a target current of 8 A for a second target time length of 10 s, generating heat of approximately I*I*R = 16 W, and the A-phase compressor winding and B-phase compressor winding flow out current of 4 A to generate heat, generating heat of approximately I*I*R = 4 W.

[0058] On the above basis, refer to Figure 2As shown in the figure, the water-cooled unit includes a compressor control circuit. The compressor control circuit includes an upper bridge arm on line A, an upper bridge arm on line B, and an upper bridge arm on line C. Then, control the upper bridge arm on line A to conduct, inject a target current with a second target time length into the compressor winding of phase A, control the upper bridge arm on line B to conduct, inject a target current with a second target time length into the compressor winding of phase B, and control the upper bridge arm on line C to conduct, inject a target current with a second target time length into the compressor winding of phase C.

[0059] Continue to refer to Figure 2 and Figure 3 As shown in the figure, taking the injection of a target current with a second target time length into the compressor winding of phase A of the compressor, and the current flowing out of the compressor windings of phase B and phase C to generate heat as an example, the compressor control circuit further includes a lower bridge arm on line A, a lower bridge arm on line B, and a lower bridge arm on line C. Then, while controlling the upper bridge arm on line A to conduct, control the lower bridge arms on line B and line C to conduct, and the current flowing out of the compressor windings of phase B and phase C generates heat. Similarly, while controlling the upper bridge arm on line B to conduct, control the lower bridge arms on line A and line C to conduct, and the current flowing out of the compressor windings of phase A and phase C generates heat. While controlling the upper bridge arm on line C to conduct, control the lower bridge arms on line A and line B to conduct, and the current flowing out of the compressor windings of phase A and phase B generates heat.

[0060] Based on the above embodiments, the reason for the water-cooled unit to perform the preheating process is that the ambient temperature is too cold, which may cause problems such as the fan being unable to start. Therefore, before generating the preheating instruction, it is necessary to obtain the current ambient temperature of the environment where the water-cooled unit is located, and generate a preheating instruction according to the current ambient temperature.

[0061] The current ambient temperature can be obtained by collecting through a temperature sensor set in a new energy vehicle, and can also be obtained through other temperature detection devices. This embodiment does not make any restrictions on this.

[0062] It should be noted that in this embodiment, only the current ambient temperature of the environment where the water-cooled unit is located is considered to determine whether to generate a preheating instruction. To exclude the interference of other conditions, it is considered that the water-cooled unit and related devices such as the fan are all free of faults at this time, that is, there is no blockage by foreign objects such as foreign matter or stones, so as to ensure the accuracy of the premise for preheating the water-cooled unit.

[0063] S120. Control the water-cooled unit to operate for at least one target working cycle to complete the preheating of the water-cooled unit.

[0064] It can be understood that considering the starting temperature of the water-cooled unit and the fan and the current ambient temperature, the water-cooled unit can be controlled to operate for one, two or more target working cycles. The specific number of target working cycles that can be operated is not restricted in any way.

[0065] Specifically, after controlling the A-phase compressor winding, B-phase compressor winding, and C-phase compressor winding of the compressor at intervals of the first target time length in sequence, inject the target current for the second target time length, and repeat this multiple times to achieve the operation of multiple target duty cycles, thereby completing the preheating of the water-cooled unit and ensuring the normal startup of the top-outlet fan.

[0066] In the technical solution of the embodiment of the present invention, the water-cooled unit includes a compressor. After the water-cooled unit receives a preheating instruction, control the three-phase compressor windings of the compressor to operate with a target duty cycle; wherein, the target duty cycle is that each phase of the compressor winding injects the target current for the second target time length at intervals of the first target time length; control the water-cooled unit to operate for at least one target duty cycle to complete the preheating of the water-cooled unit. The present invention solves the problem that the motor may be frozen by wind, frost, rain, and snow due to the top-outlet of the fan in the current application of the water-cooled unit, realizes the preheating of the water-cooled unit, ensures the smooth startup of the fan, and increases the service life of the fan.

[0067] Based on the same inventive concept, Figure 4 is a schematic structural diagram of a control device for a water-cooled unit provided by an embodiment of the present invention. The water-cooled unit includes a compressor, as Figure 4 shown, the control device for the water-cooled unit includes:

[0068] A target duty cycle operation module 210, configured to execute, after the water-cooled unit receives a preheating instruction, control the three-phase compressor windings of the compressor to operate with a target duty cycle; wherein, the target duty cycle is that each phase of the compressor winding injects the target current for the second target time length at intervals of the first target time length;

[0069] A preheating control module 220, configured to execute controlling the water-cooled unit to operate for at least one target duty cycle to complete the preheating of the water-cooled unit.

[0070] Optionally, the three-phase compressor windings include an A-phase compressor winding, a B-phase compressor winding, and a C-phase compressor winding;

[0071] Controlling the three-phase compressor windings of the compressor to operate with a target duty cycle specifically includes:

[0072] Control the A-phase compressor winding, B-phase compressor winding, and C-phase compressor winding of the compressor in sequence, and inject the target current for the second target time length after an interval of the first target time length.

[0073] Optionally, controlling the three-phase compressor windings of the compressor to operate with a target duty cycle specifically includes:

[0074] Control the target current with a second target time length to be injected into the A-phase compressor winding of the compressor. After an interval of a first target time length, control the target current with a second target time length to be injected into the B-phase compressor winding of the compressor. After another interval of the first target time length, control the target current with a second target time length to be injected into the C-phase compressor winding of the compressor.

[0075] Optionally, the water-cooled unit control device further includes:

[0076] A process current heating module, configured to execute controlling the target current with a second target time length to be injected into the A-phase compressor winding of the compressor, and the currents flowing out from the B-phase and C-phase compressor windings generate heat; and,

[0077] Control the target current with a second target time length to be injected into the B-phase compressor winding of the compressor, and the currents flowing out from the A-phase and C-phase compressor windings generate heat; and,

[0078] Control the target current with a second target time length to be injected into the C-phase compressor winding of the compressor, and the currents flowing out from the A-phase and B-phase compressor windings generate heat.

[0079] Optionally, the water-cooled unit includes a compressor control circuit. The compressor control circuit includes an A-phase upper bridge arm, a B-phase upper bridge arm, and a C-phase upper bridge arm. The three-phase compressor windings include an A-phase compressor winding, a B-phase compressor winding, and a C-phase compressor winding;

[0080] Control the three-phase compressor windings of the compressor to operate with a target duty cycle, specifically for:

[0081] Control the A-phase upper bridge arm to conduct, and inject the target current with a second target time length into the A-phase compressor winding;

[0082] Control the B-phase upper bridge arm to conduct, and inject the target current with a second target time length into the B-phase compressor winding;

[0083] Control the C-phase upper bridge arm to conduct, and inject the target current with a second target time length into the C-phase compressor winding.

[0084] Optionally, the compressor control circuit further includes an A-phase lower bridge arm, a B-phase lower bridge arm, and a C-phase lower bridge arm;

[0085] The water-cooled unit control device further includes:

[0086] An outflow current control module, configured to execute controlling the A-phase upper bridge arm to conduct while controlling the B-phase lower bridge arm and the C-phase lower bridge arm to conduct, and the currents flowing out from the B-phase and C-phase compressor windings generate heat;

[0087] Control the B-phase upper bridge arm to conduct while controlling the A-phase lower bridge arm and the C-phase lower bridge arm to conduct, and the currents flowing out from the A-phase and C-phase compressor windings generate heat;

[0088] While controlling the upper arm of line C to conduct, control the lower arms of lines A and B to conduct simultaneously, and the currents flowing out of the A-phase compressor winding and the B-phase compressor winding generate heat.

[0089] Optionally, the water-cooled unit control device further includes:

[0090] An instruction generation module, configured to obtain the current ambient temperature of the environment where the water-cooled unit is located, and generate a preheating instruction according to the current ambient temperature.

[0091] The water-cooled unit control device provided by the embodiments of the present invention can execute the water-cooled unit control method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the water-cooled unit control method.

[0092] Based on the same inventive concept, a new energy vehicle includes a thermal management system, the thermal management system includes a water-cooled unit, and the water-cooled unit includes a compressor. Figure 5 FIG. shows a schematic structural diagram of a new energy vehicle 310 that can be used to implement the embodiments of the present invention. As Figure 5 shown, the new energy vehicle 310 includes at least one processor 311, and a memory communicatively connected to the at least one processor 311, such as a read-only memory (ROM 312), a random access memory (RAM 313), etc. Among them, the memory stores a computer program executable by the at least one processor, and the processor 311 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM 312) or the computer program loaded from the storage unit 318 into the random access memory (RAM 313). In the RAM 313, various programs and data required for the operation of the new energy vehicle 310 can also be stored. The processor 311, the ROM 312, and the RAM 313 are connected to each other through a bus 314. The I / O (input / output) interface 315 is also connected to the bus 314.

[0093] Multiple components in the new energy vehicle 310 are connected to the I / O interface 315, including: an input unit 316, such as a keyboard, a mouse, etc.; an output unit 317, such as various types of displays, speakers, etc.; a storage unit 318, such as a magnetic disk, an optical disc, etc.; and a communication unit 319, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 319 allows the new energy vehicle 310 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0094] The processor 311 may be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 311 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 311 executes the various methods and processes described above, such as the water-cooled unit control method.

[0095] In some embodiments, the water-cooled unit control method may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 318. In some embodiments, part or all of the computer program may be loaded and / or installed onto the new energy vehicle 310 via the ROM 312 and / or the communication unit 319. When the computer program is loaded into the RAM 313 and executed by the processor 311, one or more steps of the water-cooled unit control method described above may be executed. Alternatively, in other embodiments, the processor 311 may be configured to execute the water-cooled unit control method by any other suitable means (e.g., by means of firmware).

[0096] The various embodiments of the systems and techniques described above in this document may be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: implemented in one or more computer programs that may be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a special-purpose or general-purpose programmable processor that receives data and instructions from a storage system, at least one input device, and at least one output device, and transmits the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0097] The computer program for implementing the method of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0098] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0099] In order to provide interaction with a user, the systems and techniques described herein can be implemented on a new energy vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the new energy vehicle. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0100] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0101] A computing system may include a client and a server. The client and the server are generally far from each other and usually interact via a communication network. The client-server relationship is created by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0102] It should be understood that various forms of processes shown above can be used, steps can be reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0103] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water cooling unit control method, characterized in that: The water cooling unit includes a compressor, and the water cooling unit control method includes: After the water cooling unit receives the preheating instruction, the three-phase compressor coil of the compressor is controlled to operate at a target duty cycle; wherein the target duty cycle is that each phase compressor coil is sequentially injected with a target current of a second target time length at intervals of a first target time length; The water cooling unit is controlled to run at least one target working cycle to complete the preheating of the water cooling unit.

2. The water cooling unit control method according to claim 1, characterized in that: The three-phase compressor coil includes an A-phase compressor coil, a B-phase compressor coil and a C-phase compressor coil; Controlling the three-phase compressor coil of the compressor to operate at a target duty cycle includes: The A-phase compressor coil, the B-phase compressor coil and the C-phase compressor coil of the compressor are sequentially controlled at intervals of the first target time length, and then the target current of the second target time length is injected.

3. The water cooling unit control method according to claim 2, characterized in that: Controlling the three-phase compressor coil of the compressor to operate at a target duty cycle includes: Control the A-phase compressor coil of the compressor to inject the target current for the second target time length, and after an interval of the first target time length, control the B-phase compressor coil of the compressor to inject the target current for the second target time length, and after an interval of the first target time length, control the C-phase compressor coil of the compressor to inject the target current for the second target time length.

4. The water cooling unit control method according to claim 2, characterized in that: The water cooling unit control method further includes: Control the A-phase compressor coil of the compressor to inject the target current for the second target time length, and the B-phase compressor coil and the C-phase compressor coil to flow out current to generate heat; and, Control the B-phase compressor coil of the compressor to inject the target current for the second target time length, and the A-phase compressor coil and the C-phase compressor coil to flow out current to generate heat; and, The C-phase compressor coil of the compressor is controlled to inject the target current for the second target time length, and the A-phase compressor coil and the B-phase compressor coil flow out current to generate heat.

5. The water cooling unit control method according to claim 1, characterized in that: The water cooling unit includes a compressor control circuit, the compressor control circuit includes an A-line bridge arm, a B-line bridge arm and a C-line bridge arm, and the three-phase compressor coil includes an A-phase compressor coil, a B-phase compressor coil and a C-phase compressor coil; Controlling the three-phase compressor coil of the compressor to operate at a target duty cycle includes: Control the bridge arm on the A line to be turned on, and inject the target current of the second target time length into the A phase compressor coil; Control the bridge arm on the B line to be turned on, and inject the target current of the second target time length into the B-phase compressor coil; The bridge arm on the C line is controlled to be turned on, and the C-phase compressor coil is injected with the target current of the second target time length.

6. The water cooling unit control method according to claim 5, characterized in that: The compressor control circuit also includes an A-line bridge arm, a B-line bridge arm and a C-line bridge arm; The water cooling unit control method further includes: While controlling the bridge arm on line A to be turned on, the bridge arm on line B and the bridge arm on line C are also controlled to be turned on, so that the outflow current of the B-phase compressor coil and the C-phase compressor coil generates heat; Control the bridge arm below the B line to be turned on, and at the same time control the bridge arm below the A line and the bridge arm below the C line to be turned on, so that the A-phase compressor coil and the C-phase compressor coil flow out current and generate heat; While controlling the bridge arm on the C line to be turned on, the lower bridge arm on the A line and the lower bridge arm on the B line are also controlled to be turned on, so that the A-phase compressor coil and the B-phase compressor coil flow out current and generate heat.

7. The water cooling unit control method according to claim 1, characterized in that: The water cooling unit control method further includes: The current ambient temperature of the environment in which the water cooling unit is located is obtained, and the preheating instruction is generated according to the current ambient temperature.

8. A water cooling unit control device, characterized in that: The water cooling unit includes a compressor, and the water cooling unit control device also includes: A target duty cycle operation module is used to control the three-phase compressor coil of the compressor to operate at a target duty cycle after the water-cooling unit receives a preheating instruction; wherein the target duty cycle is that each phase compressor coil injects a target current of a second target time length in sequence at intervals of a first target time length; The preheating control module is used to execute and control the water cooling unit to run at least one target working cycle to complete the preheating of the water cooling unit.

9. A new energy vehicle, characterized in that: The new energy vehicle includes a thermal management system, the thermal management system includes a water cooling unit, and the water cooling unit includes a compressor; The thermal management system further comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the water cooling unit control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the water cooling unit control method according to any one of claims 1 to 7 when executed.

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