Heat dissipation method, device and equipment for motor system of electric tractor and medium

Abstract

The invention discloses a heat dissipation method, device and equipment for a motor system of an electric tractor and a medium, and relates to the technical field of agricultural machinery, and the method comprises the steps: setting a heat dissipation branch for heat dissipation for each motor or a control system when the number of motors in the motor system of the electric tractor exceeds two; and controlling the liquid flow and / or flow velocity in each heat dissipation branch through the heat dissipation main path, so that the temperature of the motor or the control system corresponding to each heat dissipation branch is reduced. According to the invention, the temperature of different motors can correspond to different liquid flows and / or flow velocities in a manner of arranging corresponding heat dissipation branches for each motor, so that accurate control can be realized in a batch cooling process, and the problem that part of motors are not reasonably cooled due to unified temperature control is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a heat dissipation method, device, equipment and medium for an electric tractor motor system. Background Art

[0002] With the enhancement of environmental awareness and the advancement of agricultural modernization, the market demand for new energy electric tractors has shown explosive growth, and one of the core components is the motor. The motor is crucial to the performance and safety of the tractor. Since the motor generates a lot of heat during operation, if the heat cannot be dissipated in time, the temperature will rise, which will affect the normal operation and life of the motor. Therefore, motor heat dissipation is a key process to ensure the normal operation of the motor. There are many ways to dissipate heat for motors, among which air cooling and water cooling are the most commonly used. However, in the prior art, when the number of motors is too large, the temperature of each motor is different. Therefore, a unified temperature control method is no longer applicable to the current development situation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the prior art and specifically provide a heat dissipation method, device, equipment and medium for an electric tractor motor system, as follows:

[0004] 1) In the first aspect, the present invention provides a heat dissipation method for an electric tractor motor system, and the specific technical solution is as follows:

[0005] When the number of motors in the electric tractor motor system exceeds two, a heat dissipation branch for heat dissipation is provided for each motor or control system;

[0006] Through the heat dissipation main circuit, the liquid flow rate and / or flow rate in each heat dissipation branch is controlled to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

[0007] The beneficial effects of the heat dissipation method of an electric tractor motor system provided by the present invention are as follows:

[0008] By setting a corresponding heat dissipation branch for each motor, the temperatures of different motors can correspond to different liquid flow rates and / or flow rates, so that precise control can be achieved during the cooling process, and the problem of some motors not being properly cooled due to unified temperature control will not be caused.

[0009] Based on the above solution, the present invention can also be improved as follows.

[0010] Furthermore, the heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

[0011] Furthermore, the heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

[0012] Furthermore, it also includes: an expansion kettle, and the water tank is connected to the first water collector through the expansion kettle.

[0013] 2) In a second aspect, the present invention further provides a heat dissipation device for an electric tractor motor system, and the specific technical solution is as follows:

[0014] The judgment module is used to: when the number of motors in the electric tractor motor system exceeds two, set a heat dissipation branch for each motor or control system for heat dissipation;

[0015] The heat dissipation module is used to control the liquid flow and / or flow rate in each heat dissipation branch through the heat dissipation main circuit, so as to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

[0016] Based on the above solution, the present invention can also be improved as follows.

[0017] Furthermore, the heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

[0018] Furthermore, the heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

[0019] Furthermore, it also includes: an expansion kettle, and the water tank is connected to the first water collector through the expansion kettle.

[0020] 3) In a third aspect, the present invention further provides an electronic device, comprising a processor, wherein the processor is coupled to a memory, wherein at least one computer program is stored in the memory, and the at least one computer program is loaded and executed by the processor so that the electronic device implements any of the above methods.

[0021] 4) In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein at least one computer program is stored in the computer-readable storage medium, and the at least one computer program is loaded and executed by a processor so that a computer implements any of the above methods.

[0022] It should be noted that the beneficial effects achieved by the technical solutions of the second to fourth aspects of the present invention and the corresponding possible implementation methods can be found in the above-mentioned technical effects of the first aspect and its corresponding possible implementation methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 A schematic flow chart of a heat dissipation method for an electric tractor motor system according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a model structure of a heat dissipation device of an electric tractor motor system according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0027] Figure 4 The diagram is a schematic diagram of the operating architecture of an electric tractor motor system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, a heat dissipation method for an electric tractor motor system according to an embodiment of the present invention comprises the following steps:

[0030] S1, when the number of motors in the electric tractor motor system exceeds two, a heat dissipation branch for heat dissipation is provided for each motor or control system;

[0031] S2, controlling the liquid flow and / or flow rate in each heat dissipation branch through the heat dissipation main circuit, so as to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

[0032] The beneficial effects of the heat dissipation method of an electric tractor motor system provided by the present invention are as follows:

[0033] By setting a corresponding heat dissipation branch for each motor, the temperatures of different motors can correspond to different liquid flow rates and / or flow rates, so that precise control can be achieved during the cooling process, and the problem of some motors not being properly cooled due to unified temperature control will not be caused.

[0034] The electric tractor motor system includes: at least one set of control system and motor, wherein the control system is a motor controller.

[0035] The flow direction of the liquid in the heat dissipation branch is from the motor controller to the motor.

[0036] The motor controller is given priority because the motor controller requires a better cooling effect, so the cooling water must first pass through the motor controller before flowing to the motor. The order of the controller and the motor cannot be reversed.

[0037] In addition, since this solution sets a heat dissipation branch for each motor, in the process of controlling each heat dissipation branch, it is necessary to collect the temperature of the motor or motor controller corresponding to any heat dissipation branch in real time, that is, to collect temperature data through a temperature sensor set on the motor controller or the motor, and feed the collected temperature data back to the whole machine controller of the electric tractor. The whole machine controller determines the opening degree of the water pump corresponding to any heat dissipation branch by comparing the temperature value on any heat dissipation branch with the threshold value, so as to control the liquid flow and / or flow rate on the heat dissipation branch through the opening degree of the water pump. In this way, the purpose of dissipating the heat of the motor controller or motor corresponding to the heat dissipation branch is achieved.

[0038] The whole machine controller determines the opening and closing degree of the water pump corresponding to any heat dissipation branch by comparing the temperature value on any heat dissipation branch with the threshold value, so as to control the liquid flow and / or flow rate on the heat dissipation branch by the opening and closing degree of the water pump. Specifically, the process is as follows:

[0039] By calculating the target difference between the temperature value and the threshold, the target water pump opening degree corresponding to the target difference is determined in the correspondence between the difference and the water pump opening degree; wherein the correspondence between the difference and the water pump opening degree represents the water pump opening degree corresponding to any difference.

[0040] Embodiment 1, as Figure 4As shown, for the convenience of description, the water collector 1 in the figure is named the first water collector, the water collector 2 is named the second water collector, the water pump 1 is named the first water pump, the water pump 2 is named the second water pump, and the water pump 3 is named the third water pump. Taking the electric tractor motor system containing three motors (i.e., motor 1, motor 2 and motor 3) as an example, when working, the coolant flows out of the water tank and reaches the first water pump, the second water pump and the third water pump respectively through the first water collector. Due to the drive of the electric water pump, the coolant flows in the cooling pipe. Through physical processes such as heat exchange in the radiator, the coolant takes away the heat generated by the motor and the controller. The three branch water flows are mixed and returned to the water tank through the second water collector, and then flow out of the water tank, and then reach the first water pump, the second water pump and the third water pump respectively through the first water collector, and the above process is repeated for circulation. Since the motor controller requires a better cooling effect, the cooling water must first pass through the motor controller and then flow to the motor. The order of the controller and the motor cannot be changed; each branch is driven by its own water pump, which not only has a good cooling effect, but also can achieve the required cooling effect by adjusting the water pump of each branch; compared with the traditional solution, the water flow rate becomes smaller and the requirements for the water pump are also reduced, which is conducive to selection.

[0041] The coolant flows through the motor into the second water collector through a one-way valve. The three water flows are mixed and then flow back to the water tank. In order to prevent the coolant from expanding due to temperature increase and overflowing from the cooling system, this solution also provides an expansion kettle to maintain the normal operation of the cooling system.

[0042] Each branch is equipped with a one-way valve (i.e., one-way valve 1, one-way valve 2, and one-way valve 3). If no one-way valve is installed, when one branch is not working, the cooling water flow of the other branches may flow back. The presence of the one-way valve avoids this situation and improves the cooling effect.

[0043] In contrast, it can be seen from the above embodiments that this solution has the following advantages:

[0044] Advantage 1: Three branches are set, and the flow of each branch can be adjusted independently, which has a good cooling effect; and the water flow of each branch is not large, which does not require high requirements for the electric water pump, and is convenient for the selection of the water pump;

[0045] Advantage 2: A one-way valve is set on each branch to prevent the coolant from the working branch from flowing back into other pipelines when one or two branches are not working, thus affecting the normal operation of the motor. After the one-way valve is set, the coolant can only flow into the water collector through the pipeline;

[0046] Advantage 3: After setting up a water collector, the three water flows are mixed to make the water temperature more uniform. The pipe connecting the water radiator and the water collector is one pipe, making the connection layout more convenient.

[0047] Furthermore, the heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

[0048] Furthermore, the heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

[0049] Furthermore, it also includes: an expansion kettle, and the water tank is connected to the first water collector through the expansion kettle.

[0050] The present invention also provides a heat dissipation device for an electric tractor motor system, and the specific technical solution is as follows:

[0051] The judgment module is used to: when the number of motors in the electric tractor motor system exceeds two, set a heat dissipation branch for each motor or control system for heat dissipation;

[0052] The heat dissipation module is used to control the liquid flow and / or flow rate in each heat dissipation branch through the heat dissipation main circuit, so as to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

[0053] Furthermore, the heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

[0054] Furthermore, the heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

[0055] Furthermore, it also includes: an expansion kettle, and the water tank is connected to the first water collector through the expansion kettle.

[0056] In the above embodiments, although the steps are numbered S1, S2, etc., these are only specific embodiments given by the present invention. Those skilled in the art may adjust the execution order of S1, S2, etc. according to actual conditions, which is also within the protection scope of the present invention. It can be understood that in some embodiments, some or all of the above embodiments may be included.

[0057] It should be noted that the beneficial effects of the heat dissipation device of the electric tractor motor system provided in the above embodiment are the same as the beneficial effects of the heat dissipation method of the electric tractor motor system provided in the above embodiment, which will not be described in detail here. In addition, when the system provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the system can be divided into different functional modules according to actual conditions to complete all or part of the functions described above. In addition, the system and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be described in detail here.

[0058] The heat dissipation device of the electric tractor motor system of the embodiment of the present invention can execute the heat dissipation method of the electric tractor motor system provided by the embodiment of the present invention, and its implementation principle is similar. The actions executed by each module and unit in the heat dissipation device of the electric tractor motor system in each embodiment of the present invention correspond to the steps in the heat dissipation method of the electric tractor motor system in each embodiment of the present invention. For the detailed functional description of each module of the heat dissipation device of the electric tractor motor system, please refer to the description of the corresponding heat dissipation method of the electric tractor motor system shown in the previous text, which will not be repeated here.

[0059] Among them, the heat dissipation device of the electric tractor motor system can be a computer program (including program code) running in a computer device. For example, the heat dissipation device of the electric tractor motor system is an application software; the device can be used to execute the corresponding steps in the method provided in the embodiment of the present invention.

[0060] In some embodiments, the heat dissipation device of the electric tractor motor system provided by the embodiment of the present invention can be implemented by combining software and hardware. As an example, the heat dissipation device of the electric tractor motor system provided by the embodiment of the present invention can be a processor in the form of a hardware decoding processor, which is programmed to execute the heat dissipation method of the electric tractor motor system provided by the embodiment of the present invention. For example, the processor in the form of a hardware decoding processor can adopt one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), complex programmable logic device (CPLD, Complex Programmable Logic Device), field programmable gate array (FPGA, Field-Programmable Gate Array) or other electronic components.

[0061] In other embodiments, the heat dissipation device of the electric tractor motor system provided by the embodiments of the present invention can be implemented by software. Figure 2 A heat dissipation device of an electric tractor motor system stored in a memory is shown, which may be software in the form of a program and a plug-in, and includes a series of modules, including a judgment module 210 and a heat dissipation module 220, for implementing the heat dissipation method of the electric tractor motor system provided in an embodiment of the present invention.

[0062] The modules involved in the embodiments of the present invention may be implemented by software or hardware, wherein the name of a module does not limit the module itself in some cases.

[0063] Based on the same principle as the method shown in the embodiments of the present invention, an electronic device is also provided in the embodiments of the present invention, which may include but is not limited to: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the method shown in any embodiment of the present invention by calling the computer program.

[0064] In an alternative embodiment, an electronic device is provided, such as Figure 3 As shown, Figure 3 The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may also include a transceiver 4004, which may be used for data interaction between the electronic device and other electronic devices, such as data transmission and / or data reception. It should be noted that in actual applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present invention.

[0065] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0066] The bus 4002 may include a path to transmit information between the above components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0067] The memory 4003 can be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to this.

[0068] The memory 4003 is used to store the application code (computer program) for executing the solution of the present invention, and the execution is controlled by the processor 4001. The processor 4001 is used to execute the application code stored in the memory 4003 to implement the content shown in the above method embodiment.

[0069] The electronic device may also be a terminal device. Figure 3 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0070] An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding contents of the aforementioned method embodiment.

[0071] According to another aspect of the present invention, a computer program product or a computer program is also provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the implementation modes of the above-mentioned various embodiments.

[0072] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0073] It should be understood that the flow charts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, the program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0074] The computer-readable storage medium provided by the embodiment of the present invention may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection with 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0075] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device executes the method shown in the above embodiment.

[0076] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the disclosure scope involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) by each other.

Claims

1. A heat dissipation method for an electric tractor motor system, characterized in that: include: When the number of motors in the electric tractor motor system exceeds two, a heat dissipation branch for heat dissipation is provided for each motor or control system; Through the heat dissipation main circuit, the liquid flow rate and / or flow rate in each heat dissipation branch is controlled to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

2. The heat dissipation method of an electric tractor motor system according to claim 1, characterized in that: The heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

3. The heat dissipation method of an electric tractor motor system according to claim 1, characterized in that: The heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

4. The heat dissipation method of an electric tractor motor system according to claim 3, characterized in that: Also includes: An expansion kettle, the water tank is connected to the first water collector through the expansion kettle.

5. A heat dissipation device for an electric tractor motor system, characterized in that: include: The judgment module is used to: when the number of motors in the electric tractor motor system exceeds two, set a heat dissipation branch for each motor or control system for heat dissipation; The heat dissipation module is used to control the liquid flow and / or flow rate in each heat dissipation branch through the heat dissipation main circuit, so as to reduce the temperature of the motor or control system corresponding to each heat dissipation branch.

6. The heat dissipation device of the electric tractor motor system according to claim 5, characterized in that: The heat dissipation branch includes: an electric water pump and a one-way valve connected in sequence.

7. The heat dissipation device of the electric tractor motor system according to claim 5, characterized in that: The heat dissipation main circuit includes: a first water collector, a second water collector and a water tank, wherein the water tank is connected to the first water collector, the first water collector is connected to any heat dissipation branch, the second water collector is connected to a one-way valve in any heat dissipation branch, and the second water collector is also connected to the water tank.

8. The heat dissipation device of the electric tractor motor system according to claim 7, characterized in that: Also includes: An expansion kettle, the water tank is connected to the first water collector through the expansion kettle.

9. An electronic device, characterized in that: The electronic device comprises a processor, the processor is coupled to a memory, at least one computer program is stored in the memory, and the at least one computer program is loaded and executed by the processor so that the electronic device implements the method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one computer program, and the at least one computer program is loaded and executed by a processor so that a computer implements the method according to any one of claims 1 to 4.

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