Thermal management system and method and ship

Abstract

The invention provides a thermal management system and method and a ship, the thermal management system comprises a first heat exchanger, a pumping device, a cooling pipe network, a flow control device and a controller, the cooling pipe network comprises a first cooling branch and a second cooling branch which are arranged in parallel, and the first cooling branch is used for cooling a generator and a motor controller in a range extender; the second cooling branch is used for cooling a second cooling medium so as to cool an engine in the range extender through the second cooling medium, the first heat exchanger is used for heat exchange between the first cooling medium and seawater, and the pumping device is used for pumping the first cooling medium output by the first heat exchanger to the cooling pipe network. The flow control device is used for adjusting the flow proportion of the first cooling medium input to the first cooling branch and the second cooling branch, and the controller is used for controlling the pumping device and the flow control device to operate based on the current state parameters of the cooling pipe network, so that the cost and the structural complexity of the thermal management system are greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of ships, and in particular to a thermal management system, method and ship. Background Art

[0002] With the continuous development of ship technology, the requirements for energy conservation and emission reduction of ships are gradually increasing. The hybrid system can meet the requirements of energy conservation and emission reduction while ensuring the cruising range of the ship by setting up a range extender, and can provide a variety of power modes to meet different navigation conditions. Therefore, it is widely used on ships. In order to ensure the safe and reliable operation of the hybrid system, the cooling of the range extender is particularly important.

[0003] In the process of cooling the range extender, the engine, generator and motor controller in the range extender are mainly cooled. However, the temperature requirement of the engine for the cooling medium is different from that of the generator and the motor controller.

[0004] At present, in order to meet the different temperature requirements of the engine, generator and motor controller for the cooling medium, two independent cooling circuits are usually used to cool the range extender, one cooling circuit is used to cool the engine, and the other cooling circuit is used to cool the generator and motor controller. Considering that ships usually cool the range extender by exchanging heat between the cooling medium and seawater, however, the heat exchanger used for heat exchange with seawater has high requirements for corrosion resistance, resulting in a significantly higher cost than ordinary heat exchangers. At the same time, two sets of independent pressure regulating equipment are required on the ship to adjust the circulation of seawater and cooling medium in the two independent cooling circuits respectively. Therefore, cooling the range extender through two independent cooling circuits will greatly increase the cost and structural complexity of the thermal management system. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a thermal management system, method and ship to solve the problem in the prior art that the range extender is cooled by two independent cooling circuits, which greatly increases the cost and structural complexity of the thermal management system.

[0006] To achieve the above technical objectives, the present application provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present specification provides a thermal management system for cooling a range extender of a ship, comprising a first heat exchanger, a pumping device, a cooling pipe network, a flow control device and a controller; the first heat exchanger, the pumping device and the cooling pipe network are connected in series;

[0008] The first heat exchanger is used for heat exchange between the first cooling medium and seawater;

[0009] The pumping device is used to pump the first cooling medium output by the first heat exchanger to the cooling pipe network;

[0010] The cooling pipe network includes a first cooling branch and a second cooling branch arranged in parallel, the first cooling branch is used to cool the generator and the motor controller in the range extender, the second cooling branch is used to cool the second cooling medium, and the second cooling medium is used to cool the engine in the range extender;

[0011] The flow control device is used to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch;

[0012] The controller is electrically connected to the pumping device and the flow control device, and is used to control the operation of the pumping device and the flow control device based on current state parameters of the cooling pipe network.

[0013] In one embodiment, the cooling pipe network further includes an engine cooling circuit and a second heat exchanger, a cold side channel of the second heat exchanger is arranged in the second cooling branch, and a hot side channel of the second heat exchanger is arranged in the engine cooling circuit;

[0014] The second heat exchanger is used for exchanging heat between the second cooling medium and the first cooling medium;

[0015] The engine cooling circuit is used to cool the engine by using the second cooling medium.

[0016] In one embodiment, the flow control device includes a flow control valve disposed in a target cooling branch, and the target cooling branch is a cooling branch having a higher required cooling medium temperature among the first cooling branch and the second cooling branch.

[0017] In one embodiment, the current state parameter of the cooling network includes a first temperature of the first cooling medium and a second temperature of the second cooling medium;

[0018] The controller is specifically used for:

[0019] Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch;

[0020] Based on the cooling branch that meets the cooling condition, the pumping device and the flow control device are controlled to operate.

[0021] In one embodiment, the controller is specifically configured to:

[0022] If both the first cooling branch and the second cooling branch satisfy the cooling condition, determining a target speed of the pumping device and a target value of an operating parameter of the flow control device based on an operating parameter of the range extender, the first temperature, and the second temperature;

[0023] The pumping device is controlled to adjust the speed based on the target speed, and the flow control device is controlled to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch based on the target value of the working parameter of the flow control device.

[0024] In one embodiment, the controller is specifically configured to:

[0025] If both the first cooling branch and the second cooling branch do not meet the cooling condition, the pumping device is controlled to be closed.

[0026] In one embodiment, the controller is specifically configured to:

[0027] If the first cooling branch meets the cooling condition and the second cooling branch does not meet the cooling condition, the flow control device is controlled to adjust the flow of the first cooling medium input to the second cooling branch to zero, and the pumping device is controlled to adjust the speed based on the first temperature.

[0028] In a second aspect, an embodiment of the present specification provides a thermal management method, which is applied to a thermal management system as described in any one of the above items, and the method includes:

[0029] Obtaining current status parameters of the cooling pipe network;

[0030] Based on the current state parameters of the cooling pipe network, the operation of the pumping device and the flow control device is controlled.

[0031] In one embodiment, the current state parameter of the cooling network includes a first temperature of the first cooling medium and a second temperature of the second cooling medium;

[0032] The controlling the operation of the pumping device and the flow control device based on the current state parameters of the cooling pipe network includes:

[0033] Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch;

[0034] Based on the cooling branch that meets the cooling condition, the pumping device and the flow control device are controlled to operate.

[0035] In a third aspect, an embodiment of the present specification provides a ship, the ship comprising a range extender and a thermal management system as described in any one of the above items.

[0036] In a fourth aspect, an embodiment of the present specification provides an electronic device, the electronic device comprising at least one processor and at least one memory, the memory storing a computer program, and the computer program, when executed by the processor, implements the thermal management method as described above.

[0037] In a fifth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the thermal management method as described above is implemented.

[0038] In a sixth aspect, an embodiment of the present specification provides a computer program product or a computer program, wherein the computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; the processor of the computer device reads the computer program from the computer-readable storage medium, and the processor implements the thermal management method described above when executing the computer program.

[0039] It can be seen from the above technical scheme that the embodiment of the present application provides a thermal management system, method and ship, which is used to cool the range extender of the ship. The thermal management system includes a first heat exchanger, a pumping device, a cooling pipe network, a flow control device and a controller. The first heat exchanger, the pumping device and the cooling pipe network are connected in series. The cooling pipe network includes a first cooling branch and a second cooling branch arranged in parallel. The generator and the motor controller in the range extender are cooled by the first cooling branch, and the second cooling medium is cooled by the second cooling branch, and the engine in the range extender is cooled by the second cooling medium. The first heat exchanger is used for the first The cooling medium exchanges heat with seawater, and the pumping device is used to pump the first cooling medium output by the first heat exchanger to the cooling network. The flow control device is used to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch. The controller is electrically connected to the pumping device and the flow control device, and is used to control the operation of the pumping device and the flow control device based on the current state parameters of the cooling network. Thus, a heat exchanger that exchanges heat with seawater and a set of pressure regulating equipment can meet the different temperature requirements of the engine, generator and motor controller for the cooling medium, thereby greatly reducing the cost and structural complexity of the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of the structure of a thermal management system provided for an implementation of this specification.

[0042] Figure 2 A schematic diagram of the structure of another thermal management system provided for an embodiment of this specification.

[0043] Figure 3 A schematic flow chart of a thermal management method provided for an implementation of this specification. DETAILED DESCRIPTION

[0044] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0045] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0046] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0047] Overview

[0048] As described in the background technology, with the continuous development of ship technology, the requirements for energy conservation and emission reduction of ships are gradually increasing. By setting up a range extender, the hybrid power system can meet the requirements of energy conservation and emission reduction while ensuring the cruising range of the ship, and can provide a variety of power modes to meet different navigation conditions. Therefore, it is widely used on ships. In order to ensure the safe and reliable operation of the hybrid power system, cooling the range extender is particularly important.

[0049] Among them, in the process of cooling the range extender, the engine, generator and motor controller in the range extender are mainly cooled, wherein the engine is used to burn fuel (such as gasoline, natural gas, diesel, etc.) to generate mechanical energy, and drive the generator to generate electricity through the generated mechanical energy, so that the electric energy generated by the generator can be used to charge the battery or power the drive motor, and the motor controller can be used to control the generator and the drive motor.

[0050] However, the temperature requirement of the engine for the cooling medium is different from the temperature requirement of the generator and the motor controller for the cooling medium. For example, the temperature requirement of the engine for the cooling medium is usually 80°C to 110°C, and the temperature requirement of the generator and the motor controller for the cooling medium is usually less than 65°C.

[0051] At present, in order to meet the different temperature requirements of the engine, generator and motor controller for the cooling medium, two independent cooling circuits are usually used to cool the range extender, one cooling circuit is used to cool the engine, and the other cooling circuit is used to cool the generator and motor controller. Considering that ships usually cool the range extender by exchanging heat between the cooling medium and seawater, however, the heat exchanger used for heat exchange with seawater has high requirements for corrosion resistance, resulting in a significantly higher cost than ordinary heat exchangers. At the same time, two sets of independent pressure regulating equipment are required on the ship to adjust the circulation of seawater and cooling medium in the two independent cooling circuits respectively. Therefore, cooling the range extender through two independent cooling circuits will greatly increase the cost and structural complexity of the thermal management system.

[0052] In order to solve the problem that the cost and structural complexity of the thermal management system are greatly increased by cooling the range extender through two independent cooling circuits in the traditional solution, a thermal management solution is provided in the technical solution of the present application. The solution is used to cool the range extender of the ship. The thermal management system includes a first heat exchanger, a pumping device, a cooling pipe network, a flow control device and a controller. The first heat exchanger, the pumping device and the cooling pipe network are connected in series. The cooling pipe network includes a first cooling branch and a second cooling branch arranged in parallel. The generator and the motor controller in the range extender are cooled by the first cooling branch, and the second cooling medium is cooled by the second cooling branch, and the second cooling medium is cooled by the second cooling medium. The engine in the range extender, the first heat exchanger is used for exchanging heat between the first cooling medium and seawater, the pumping device is used for pumping the first cooling medium output by the first heat exchanger to the cooling network, the flow control device is used for adjusting the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch, the controller is electrically connected to the pumping device and the flow control device, and is used to control the operation of the pumping device and the flow control device based on the current state parameters of the cooling network. Therefore, through a heat exchanger for exchanging heat with seawater and a set of pressure regulating equipment, the different temperature requirements of the engine, the generator and the motor controller for the cooling medium can be met, thereby greatly reducing the cost and structural complexity of the thermal management system.

[0053] Based on the above inventive concept, the thermal management system provided by the embodiments of this specification is exemplarily described below.

[0054] Exemplary Systems

[0055] The embodiments of this specification provide a thermal management system for cooling a range extender of a ship, such as Figure 1 As shown, the thermal management system includes a first heat exchanger 101, a pumping device 102, a cooling network 103, a flow control device 104 and a controller 105; the first heat exchanger 101, the pumping device 102 and the cooling network 103 are connected in series;

[0056] The first heat exchanger 101 is used for heat exchange between the first cooling medium and seawater;

[0057] The pumping device 102 is used to pump the first cooling medium output by the first heat exchanger 101 to the cooling pipe network 103;

[0058] The cooling pipe network 103 includes a first cooling branch and a second cooling branch arranged in parallel, the first cooling branch is used to cool the generator and the motor controller in the range extender, and the second cooling branch is used to cool the second cooling medium, and the second cooling medium is used to cool the engine in the range extender;

[0059] The flow control device 104 is used to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch;

[0060] The controller 105 is electrically connected to the pumping device 102 and the flow control device 104 , and is used to control the operation of the pumping device 102 and the flow control device 104 based on current state parameters of the cooling pipe network 103 .

[0061] Specifically, the range extender of the ship may include an engine, a generator and a motor controller, and the motor controller and the thermal management system may be used to cool the engine, the generator and the motor controller in the range extender.

[0062] The thermal management system may include a first heat exchanger 101, and the first heat exchanger 101 is used for heat exchange between a first cooling medium and seawater. The first cooling medium is a cooling medium other than seawater. The specific type of the first cooling medium may be set according to actual needs, for example, it may be fresh water, antifreeze, oil, etc. Optionally, the first cooling medium may be fresh water, which has good thermal conductivity, low cost, and low corrosion to metal components.

[0063] The thermal management system further includes a pumping device 102 and a cooling pipe network 103, and the first heat exchanger 101 is serially connected to the pumping device 102 and the cooling pipe network 103. For example, the cold side channel of the first heat exchanger 101 can be used for the input and output of seawater, and the hot side channel of the first heat exchanger 101 can be used for the input and output of the first cooling medium. The cooling medium output end of the hot side channel of the first heat exchanger 101 can be connected to the cooling medium input end of the cooling pipe network 103 through a first pipeline, and the cooling medium output end of the cooling pipe network 103 is connected to the cooling medium input end of the hot side channel of the first heat exchanger 101 through a second pipeline. The pumping device 102 can be arranged in the first pipeline to pump the cooled first cooling medium output by the first heat exchanger 101 to the cooling pipe network 103 through the pumping device 102.

[0064] The cooling network 103 includes a first cooling branch and a second cooling branch arranged in parallel. The first cooling branch is used to cool the generator and the motor controller in the range extender. For example, the generator cooling module 106 and the motor controller cooling module 107 can be connected to the first cooling branch in series or in parallel. Figure 1 The generator cooling module 106 and the motor controller cooling module 107 are only connected in series for illustration; wherein the generator cooling module 106 can absorb the heat of the generator through the first cooling medium input into the first cooling branch to achieve cooling of the generator; the motor controller cooling module 107 can absorb the heat of the motor controller through the first cooling medium input into the first cooling branch to achieve cooling of the motor controller.

[0065] The second cooling branch is used to cool the second cooling medium, and the second cooling medium can be used to cool the engine in the range extender. Among them, the second cooling medium is a cooling medium other than seawater, and the second cooling medium can be of the same type as the first cooling medium, or of a different type from the first cooling medium. For example, a second cooling medium cooling module 108 can be provided in the second cooling branch, and the second cooling medium cooling module 108 can adopt a heat exchanger to achieve heat exchange between the first cooling medium and the second cooling medium through the heat exchanger, thereby cooling the second cooling medium; in addition, the second cooling medium cooling module 108 can also adopt a mixing device to mix the first cooling medium and the second cooling medium through the mixing device, thereby cooling the second cooling medium. It is understood that an engine cooling circuit for circulating the second cooling medium can also be provided, and the engine cooling module is provided in the engine cooling circuit, and the engine cooling module can absorb the heat of the engine through the second cooling medium in the engine cooling circuit to achieve cooling of the engine. It is understood that when the second cooling medium is cooled by the mixing device, the second cooling medium can be of the same type as the first cooling medium to reduce the complexity of the structure.

[0066] The flow control device 104 can be arranged at the connection point of the first cooling branch and the second cooling branch. For example, the flow control device 104 can adopt a three-way proportional regulating valve, the inlet of the three-way proportional regulating valve is connected to the first pipeline, and the two outlets of the three-way proportional regulating valve are respectively connected to the first cooling branch and the second cooling branch, so as to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch through the three-way proportional regulating valve. In addition, the flow control device 104 can also be a flow control valve arranged in the second cooling branch, so as to control the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch by adjusting the opening of the flow control valve.

[0067] It can be understood that the flow control device 104 can also include a first sub-flow control valve arranged in the first cooling branch and a second sub-flow control valve arranged in the second cooling branch, so as to control the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch by adjusting the opening of the first sub-flow control valve and the second sub-flow control valve.

[0068] It should be noted that Figure 1 In the figure, only the flow control device 104 is arranged in the second cooling branch for illustration.

[0069] The controller 105 can be electrically connected to the pumping device 102 and the flow control device 104 to control the operation of the pumping device 102 and the flow control device 104 based on the current state parameters of the cooling network 103. The current state parameters of the cooling network 103 may include the temperature of the cooling medium in the cooling network 103. In addition, it may also include the operating state of the cooling network 103, such as the flow rate and pressure of the cooling medium. Therefore, the thermal management system of the present application can meet the different temperature requirements of the engine, the generator and the motor controller for the cooling medium through a heat exchanger that exchanges heat with seawater and a set of pressure regulating equipment, thereby greatly reducing the cost and structural complexity of the thermal management system.

[0070] In one possible implementation, Figure 2 As shown, the cooling pipe network 103 also includes an engine cooling circuit and a second heat exchanger 201, the cold side channel of the second heat exchanger 201 is arranged in the second cooling branch, and the hot side channel of the second heat exchanger 201 is arranged in the engine cooling circuit;

[0071] The second heat exchanger 201 is used for heat exchange between the second cooling medium and the first cooling medium;

[0072] The engine cooling circuit is used to cool the engine by using the second cooling medium.

[0073] Specifically, the second cooling medium cooling module 108 can adopt a second heat exchanger 201, and the second heat exchanger 201 can be used for heat exchange between the second cooling medium and the first cooling medium. For example, the second heat exchanger 201 can adopt a shell and tube heat exchanger, a plate heat exchanger, etc., and can be specifically configured according to actual needs.

[0074] Among them, the cold side channel of the second heat exchanger 201 is arranged in the second cooling branch. For example, the cooling medium input end of the cold side channel of the second heat exchanger 201 can be connected to the cooling medium output end of the hot side channel of the first heat exchanger 101, and the cooling medium output end of the cold side channel of the second heat exchanger 201 can be connected to the cooling medium input end of the hot side channel of the first heat exchanger 101, so as to input the first cooling medium after cooling by the first heat exchanger 101 into the cold side channel of the second heat exchanger 201.

[0075] The engine cooling circuit is used to cool the engine through the second cooling medium, wherein the hot side channel of the second heat exchanger 201 is arranged in the engine cooling circuit, and the engine cooling circuit can be used for the circulation of the second cooling medium. For example, the cooling medium output end of the hot side channel of the second heat exchanger 201 can be connected to the cooling medium input end of the engine cooling circuit, and the cooling medium input end of the hot side channel of the second heat exchanger 201 can be connected to the cooling medium output end of the engine cooling circuit, so as to cool the second cooling medium through the first cooling medium. Among them, the engine cooling module 202 is arranged in the engine cooling circuit, and the engine cooling module 202 can absorb the heat of the engine through the second cooling medium cooled in the engine cooling circuit to achieve cooling of the engine, and the structure is simple, and can effectively meet the temperature requirements of the engine for the cooling medium.

[0076] In addition, a water pump 203 may be provided in the engine cooling circuit so that the second cooling medium circulates in the engine cooling circuit under the action of the water pump 203. The water pump 203 may be a mechanical pump or an electronic pump, and the water pump 203 may run continuously during the operation of the engine to ensure the effective operation of the engine.

[0077] In a feasible implementation, the flow control device 104 includes a flow control valve disposed in a target cooling branch, and the target cooling branch is a cooling branch with a higher required cooling medium temperature between the first cooling branch and the second cooling branch.

[0078] Specifically, the flow control device 104 may include a flow control valve arranged in the target cooling branch, and the flow control valve may be an electronic valve. Among them, the target cooling branch is the cooling branch with a lower cooling medium demand temperature between the first cooling branch and the second cooling branch. The cooling medium demand temperature of the first cooling branch may be the cooling medium demand temperature of the generator and the motor controller during operation, and the cooling medium demand temperature of the second cooling branch may be the cooling medium demand temperature of the engine during operation. For example, when the engine's cooling medium demand temperature is 80°C to 110°C, and the generator and the motor controller's cooling medium demand temperature is lower than 65°C, a flow control valve may be arranged in the second cooling branch.

[0079] During operation of the thermal management system, the sum of the flow rate of the first cooling medium input to the first cooling branch and the flow rate of the first cooling medium input to the second cooling branch is the flow rate of the first cooling medium input to the cooling pipe network 103. Therefore, during operation of the pumping device 102, by adjusting the opening of the flow control valve, the ratio of the flow rate of the first cooling medium input to the first cooling branch and the flow rate of the first cooling medium input to the second cooling branch can be effectively adjusted. At the same time, by setting the flow control valve in the cooling branch with a higher cooling medium demand temperature among the first cooling branch and the second cooling branch, under the condition that the cooling branch with a lower cooling medium demand temperature meets the cooling condition and the cooling branch with a higher cooling medium demand temperature does not meet the cooling condition, the opening of the flow control valve can be adjusted to 0 to prevent the cooled first cooling medium from entering the cooling branch with a higher cooling medium demand temperature, thereby effectively meeting the different temperature requirements of the engine, the generator and the motor controller for the cooling medium, and the structure and control logic are simple, further reducing the cost of the thermal management system.

[0080] In a feasible implementation manner, the current state parameter of the cooling network 103 includes a first temperature of the first cooling medium and a second temperature of the second cooling medium;

[0081] The controller 105 is specifically used for:

[0082] Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch;

[0083] Based on the cooling branch that meets the cooling condition, the pumping device 102 and the flow control device 104 are controlled to operate.

[0084] Specifically, the first temperature of the first cooling medium may be a temperature detection value of the first cooling medium input to the cooling network 103. For example, a first temperature detection device may be provided on the first pipeline between the cooling medium output end of the hot side channel of the first heat exchanger 101 and the cooling medium input end of the cooling network 103, and the first temperature detection device is electrically connected to the controller 105, so that during the operation of the range extender, the temperature of the first cooling medium in the first pipeline is detected in real time by the first temperature detection device and transmitted to the controller 105.

[0085] The second temperature of the second cooling medium may be a temperature detection value of the second cooling medium after heat exchange with the first cooling medium. For example, a second temperature detection device may be provided in the engine cooling circuit, and the second temperature detection device may be provided at the cooling medium output end of the hot side channel of the second heat exchanger 201. The second temperature detection device is electrically connected to the controller 105, so that during the operation of the range extender, the temperature of the second cooling medium in the engine cooling circuit is detected in real time by the second temperature detection device, and transmitted to the controller 105.

[0086] In implementation, the controller 105 can determine the cooling branch that meets the cooling condition in the first cooling branch and the second cooling branch based on the first temperature of the first cooling medium and the second temperature of the second cooling medium. Wherein, when the first temperature of the first cooling medium is greater than the upper limit of the required temperature of the cooling medium of the generator and the motor controller, it can be determined that the first cooling branch meets the cooling condition, and when the first temperature of the first cooling medium is less than the lower limit of the required temperature of the cooling medium of the generator and the motor controller, it can be determined that the first cooling branch does not meet the cooling condition. At the same time, when the second temperature of the second cooling medium is greater than the upper limit of the required temperature of the cooling medium of the engine, it can be determined that the second cooling branch meets the cooling condition, and when the second temperature of the second cooling medium is less than the lower limit of the required temperature of the cooling medium of the engine, it can be determined that the second cooling branch does not meet the cooling condition.

[0087] It can be understood that when the first temperature of the first cooling medium is between the upper limit and the lower limit of the cooling medium required temperature of the generator and the motor controller, the determination result of whether the first cooling branch meets the cooling condition can be the determination result of the previous moment. At the same time, when the second temperature of the second cooling medium is between the upper limit and the lower limit of the cooling medium required temperature of the engine, the determination result of whether the second cooling branch meets the cooling condition can remain unchanged from the determination result of the previous moment.

[0088] Thus, the controller 105 can control the operation of the pumping device 102 and the flow control device 104 based on the cooling branch that meets the cooling conditions. For example, the controller 105 can control the operation of the pumping device 102 and the flow control device 104 based on the difference between the cooling medium detection temperature corresponding to the cooling branch that meets the cooling conditions and the cooling medium target temperature, thereby effectively meeting the different temperature requirements of the engine, the generator, and the motor controller for the cooling medium.

[0089] The cooling medium detection temperature corresponding to the cooling branch is the temperature detection value of the cooling medium used to cool the device to be cooled corresponding to the cooling branch. The cooling medium target temperature corresponding to the cooling branch is the target value of the temperature of the cooling medium used to cool the device to be cooled corresponding to the cooling branch.

[0090] For example, the device to be cooled corresponding to the first cooling branch is a generator and a motor controller, the cooling medium detection temperature corresponding to the first cooling branch is the first temperature of the first cooling medium, and the cooling medium target temperature corresponding to the first cooling branch can be any temperature between the upper limit and the lower limit of the cooling medium required temperature of the generator and the motor controller, such as 50°C. The device to be cooled corresponding to the second cooling branch is an engine, the cooling medium detection temperature corresponding to the second cooling branch is the second temperature of the second cooling medium, and the cooling medium target temperature corresponding to the second cooling branch is any temperature between the upper limit and the lower limit of the cooling medium required temperature of the engine, such as 90°C.

[0091] In addition, the controller 105 can control the operation of the pumping device 102 and the flow control device 104 based on the cooling medium detection temperature corresponding to the cooling branch that meets the cooling conditions, and the working parameters of the device to be cooled corresponding to the cooling branch that meets the cooling conditions, so as to further improve the cooling effect of the thermal management system on the range extender. Among them, the working parameters of the device to be cooled can be the workload, speed, etc. of the device to be cooled, which can be set according to actual needs.

[0092] In a feasible implementation manner, the controller 105 is specifically configured to:

[0093] If both the first cooling branch and the second cooling branch satisfy the cooling condition, a target speed of the pumping device 102 and a target value of the operating parameter of the flow control device 104 are determined based on the operating parameter of the range extender, the first temperature and the second temperature;

[0094] The pumping device 102 is controlled to adjust the speed based on the target speed, and the flow control device 104 is controlled to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch based on the target value of the working parameter of the flow control device 104.

[0095] Specifically, if both the first cooling branch and the second cooling branch meet the cooling conditions, it indicates that the generator, the motor controller and the second cooling medium need to be cooled simultaneously. At this time, the target speed of the pumping device 102 and the target value of the working parameter of the flow control device 104 can be determined based on the working parameters of the range extender and the first temperature and the second temperature. For example, the target speed of the pumping device 102 and the target value of the working parameter of the flow control device 104 can be determined based on the working parameters of the range extender, the first temperature, the second temperature and the first target corresponding relationship. The first target corresponding relationship can be used to characterize the corresponding relationship between the working parameters of the range extender, the first temperature, the second temperature, the target speed of the pumping device 102 and the target value of the working parameter of the flow control device 104, so that the target speed of the pumping device 102 and the target value of the working parameter of the flow control device 104 can be determined quickly and accurately.

[0096] Among them, the operating parameters of the range extender may include one or more of the workload of the engine, the current speed of the engine, the workload of the generator, the current speed of the generator, and the workload of the motor controller. In implementation, the workload of the engine can be determined based on one or more of the current output power of the engine, the current fuel consumption rate, the current intake volume, and the current cylinder pressure. At the same time, the workload of the generator can be determined based on the current power generation power, current current, etc. of the generator. In addition, the workload of the motor controller can be determined based on one or more of the input power, output power, input current, and output current of the motor controller, and the workload calculated by the motor controller can also be obtained by communicating with the motor controller.

[0097] Optionally, when the flow control device 104 adopts a three-way proportional control valve, the working parameters of the flow control device 104 may include the opening ratio of the two outlets of the three-way proportional control valve; when the flow control valve includes a flow control valve arranged in the first cooling branch and / or the second cooling branch, the working parameters of the flow control device 104 may include the opening of the flow control device 104.

[0098] In implementation, the pumping device 102 can be controlled to operate based on the target rotation speed of the pumping device 102 to adjust the flow rate of the first cooling medium input to the cooling network 103. At the same time, based on the target value of the working parameter of the flow control device 104, the flow control device 104 is controlled to operate to adjust the flow rate ratio of the first cooling medium input to the first cooling branch and the second cooling branch through the flow control device 104.

[0099] Thus, the flow of the first cooling medium input to the first cooling branch and the second cooling branch can be effectively adjusted through the pumping device 102 and the flow control device 104, thereby achieving effective cooling of the engine, the generator and the motor controller.

[0100] In a feasible implementation manner, the controller 105 is specifically configured to:

[0101] If both the first cooling branch and the second cooling branch do not meet the cooling condition, the pumping device 102 is controlled to be closed.

[0102] Specifically, if the first cooling branch and the second cooling branch do not meet the cooling conditions, it indicates that the generator, the motor controller and the second cooling medium do not need to be cooled. At this time, the pumping device 102 can be controlled to be closed, that is, stop pumping the cooled first cooling medium to the cooling pipe network 103. At the same time, the flow control device 104 can also be controlled to keep the current state unchanged, and the flow control device 104 can also be controlled to adjust the flow of the first cooling medium input to the second cooling branch to zero. The specific settings can be made according to actual needs, so as to ensure that the engine, the generator and the motor controller work effectively.

[0103] In a feasible implementation manner, the controller 105 is specifically configured to:

[0104] If the first cooling branch meets the cooling condition and the second cooling branch does not meet the cooling condition, the flow control device 104 is controlled to adjust the flow of the first cooling medium input to the second cooling branch to zero, and the pumping device 102 is controlled to adjust the speed based on the first temperature.

[0105] Specifically, if the first cooling branch meets the cooling condition, and the second cooling branch does not meet the cooling condition, it indicates that the generator and the motor controller need to be cooled, but the second cooling medium does not need to be cooled. At this time, the controller 105 can control the flow control device 104 to adjust the flow of the first cooling medium input to the second cooling branch to zero, that is, the first cooling medium input to the cooling pipe network 103 is all input to the first cooling branch, so as to cool the generator and the motor controller through the first cooling medium input to the first cooling branch. At the same time, the engine can be cooled by the heat dissipation of the second cooling medium in the engine cooling circuit during the circulation process to ensure the operating temperature of the engine, thereby ensuring the effective operation of the engine, the motor and the motor controller.

[0106] In addition, the controller 105 can control the pumping device 102 to adjust the speed based on the first temperature of the first cooling medium. For example, the speed of the pumping device 102 can be adjusted by feedback control based on the first temperature of the first cooling medium and the target temperature of the first cooling medium, so that the first temperature of the first cooling medium reaches its target temperature. The target temperature of the first cooling medium can be determined based on the required temperature of the cooling medium of the generator and the motor controller during operation. For example, the target temperature of the first cooling medium can be any temperature between the upper limit and the lower limit of the required temperature of the cooling medium of the generator and the motor controller, such as 50°C, so that the generator and the motor controller can be cooled quickly and effectively.

[0107] In addition, the target speed of the pumping device 102 can be determined based on the first temperature of the first cooling medium, the operating parameters of the generator, the operating parameters of the motor controller, and the second target corresponding relationship, and the pumping device 102 can be controlled to adjust the speed based on the target speed of the pumping device 102. The second target corresponding relationship can be used to characterize the corresponding relationship between the first temperature of the first cooling medium, the operating parameters of the generator, the operating parameters of the motor controller, and the target speed of the pumping device 102, so that the generator and the motor controller can be cooled quickly and effectively.

[0108] It is understandable that since the engine, generator and motor controller all need to run during the operation of the range extender, and considering that the temperature required for the cooling medium by the engine during operation is higher than the temperature required for the cooling medium by the generator and motor controller, there is usually no situation where the first cooling branch does not meet the cooling conditions but the second cooling branch meets the cooling conditions.

[0109] Exemplary Methods

[0110] In an exemplary embodiment of the present specification, a thermal management method is also provided, which is applied to the thermal management system described in any of the above embodiments. Figure 3 As shown, the method includes:

[0111] S301, obtaining current state parameters of the cooling pipe network;

[0112] S302: Based on the current state parameters of the cooling pipe network, control the operation of the pumping device and the flow control device.

[0113] In a feasible implementation manner, the current state parameter of the cooling network includes a first temperature of the first cooling medium and a second temperature of the second cooling medium;

[0114] The controlling the operation of the pumping device and the flow control device based on the current state parameters of the cooling pipe network includes:

[0115] Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch;

[0116] Based on the cooling branch that meets the cooling condition, the pumping device and the flow control device are controlled to operate.

[0117] In a feasible implementation manner, the controlling the operation of the pumping device and the flow control device based on the cooling branch that meets the cooling condition includes:

[0118] If both the first cooling branch and the second cooling branch satisfy the cooling condition, determining a target speed of the pumping device and a target value of an operating parameter of the flow control device based on an operating parameter of the range extender, the first temperature, and the second temperature;

[0119] The pumping device is controlled to adjust the speed based on the target speed, and the flow control device is controlled to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch based on the target value of the working parameter of the flow control device.

[0120] In a feasible implementation manner, the controlling the operation of the pumping device and the flow control device based on the cooling branch that meets the cooling condition includes:

[0121] If both the first cooling branch and the second cooling branch do not meet the cooling condition, the pumping device is controlled to be closed.

[0122] In a feasible implementation manner, the controlling the operation of the pumping device and the flow control device based on the cooling branch that meets the cooling condition includes:

[0123] If the first cooling branch meets the cooling condition and the second cooling branch does not meet the cooling condition, the flow control device is controlled to adjust the flow of the first cooling medium input to the second cooling branch to zero, and the pumping device is controlled to adjust the speed based on the first temperature.

[0124] The thermal management method provided in this embodiment belongs to the same application concept as the thermal management system provided in the above embodiments of this application. The thermal management method provided in any of the above embodiments of this application can be executed by a controller in the thermal management system, and the controller has functional modules and beneficial effects corresponding to the execution of the thermal management method. For technical details not fully described in this embodiment, please refer to the specific processing content of the thermal management system provided in the above embodiments of this application, which will not be repeated here.

[0125] Exemplary Devices

[0126] In an exemplary embodiment of the present specification, an electronic device is also provided, the electronic device comprising at least one processor and at least one memory, the memory storing a computer program, and the computer program, when executed by the processor, implements the thermal management method as described in any of the above embodiments.

[0127] In an exemplary embodiment of the present specification, a ship is also provided, the ship comprising a range extender and a thermal management system as described in any one of the above embodiments.

[0128] Exemplary computer program products and storage media

[0129] In addition to the above-mentioned methods and devices, the thermal management method provided in the embodiments of this specification may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the thermal management method according to various embodiments of the present specification described in the above "Exemplary Method" section of this specification.

[0130] The computer program product can be written in any combination of one or more programming languages ​​to write program codes for executing the operations of the embodiments of this specification, and the programming languages ​​include object-oriented programming languages, such as Java, C++, etc., and also include conventional procedural programming languages, such as "C" language or similar programming languages.

[0131] In addition, an embodiment of the present specification also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the thermal management method according to various embodiments of the present specification described in the above "Exemplary Method" section of the present specification.

[0132] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this specification can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0133] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0134] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A thermal management system, characterized in that: Used for cooling a range extender of a ship, comprising a first heat exchanger, a pumping device, a cooling pipe network, a flow control device and a controller; the first heat exchanger, the pumping device and the cooling pipe network are connected in series; The first heat exchanger is used for heat exchange between the first cooling medium and seawater; The pumping device is used to pump the first cooling medium output by the first heat exchanger to the cooling pipe network; The cooling pipe network includes a first cooling branch and a second cooling branch arranged in parallel, the first cooling branch is used to cool the generator and the motor controller in the range extender, the second cooling branch is used to cool the second cooling medium, and the second cooling medium is used to cool the engine in the range extender; The flow control device is used to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch; The controller is electrically connected to the pumping device and the flow control device, and is used to control the operation of the pumping device and the flow control device based on current state parameters of the cooling pipe network.

2. The thermal management system according to claim 1, characterized in that: The cooling pipe network further comprises an engine cooling circuit and a second heat exchanger, wherein a cold side channel of the second heat exchanger is arranged in the second cooling branch, and a hot side channel of the second heat exchanger is arranged in the engine cooling circuit; The second heat exchanger is used for exchanging heat between the second cooling medium and the first cooling medium; The engine cooling circuit is used to cool the engine by using the second cooling medium.

3. The thermal management system according to claim 1, characterized in that: The flow control device includes a flow control valve disposed in a target cooling branch, and the target cooling branch is a cooling branch with a higher required cooling medium temperature among the first cooling branch and the second cooling branch.

4. The thermal management system according to any one of claims 1 to 3, characterized in that: The current state parameters of the cooling network include a first temperature of the first cooling medium and a second temperature of the second cooling medium; The controller is specifically used for: Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch; Based on the cooling branch that meets the cooling condition, the pumping device and the flow control device are controlled to operate.

5. The thermal management system according to claim 4, characterized in that: The controller is specifically used for: If both the first cooling branch and the second cooling branch satisfy the cooling condition, determining a target speed of the pumping device and a target value of an operating parameter of the flow control device based on an operating parameter of the range extender, the first temperature, and the second temperature; The pumping device is controlled to adjust the speed based on the target speed, and the flow control device is controlled to adjust the flow ratio of the first cooling medium input to the first cooling branch and the second cooling branch based on the target value of the working parameter of the flow control device.

6. The thermal management system according to claim 4, characterized in that: The controller is specifically used for: If both the first cooling branch and the second cooling branch do not meet the cooling condition, the pumping device is controlled to be closed.

7. The thermal management system according to claim 4, characterized in that: The controller is specifically used for: If the first cooling branch meets the cooling condition and the second cooling branch does not meet the cooling condition, the flow control device is controlled to adjust the flow of the first cooling medium input to the second cooling branch to zero, and the pumping device is controlled to adjust the speed based on the first temperature.

8. A thermal management method, characterized in that: Applied to the thermal management system according to any one of claims 1 to 7, the method comprises: Obtaining current status parameters of the cooling pipe network; Based on the current state parameters of the cooling pipe network, the operation of the pumping device and the flow control device is controlled.

9. The thermal management method according to claim 8, characterized in that: The current state parameters of the cooling network include a first temperature of the first cooling medium and a second temperature of the second cooling medium; The controlling the operation of the pumping device and the flow control device based on the current state parameters of the cooling pipe network includes: Based on the first temperature and the second temperature, determining a cooling branch that satisfies a cooling condition among the first cooling branch and the second cooling branch; Based on the cooling branch that meets the cooling condition, the pumping device and the flow control device are controlled to operate.

10. A ship, characterized in that: The ship comprises a range extender and a thermal management system according to any one of claims 1 to 7.

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