Outdoor water and heat management control method and system and vehicle thereof

Abstract

The invention relates to the technical field of vehicle heat management control, in particular to an outdoor water heat management control method and system and a vehicle thereof. The system comprises a first water pump, a three-way proportional valve and the input end of a liquid-liquid heat exchanger form a primary side water loop, and the primary side water loop is connected with an engine cooling pipeline; the second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary side water loop, and the heater is connected with the battery pack; the control method comprises the steps that the starting state of the engine and the remaining electric quantity of the battery pack are obtained to switch the working modes, a corresponding heat management strategy is executed based on each working mode, and heat is output to the secondary side water loop. The requirement for outdoor hot water can be met, and the utilization rate of resources is increased. The water path of the whole vehicle is connected with the water path of the outdoor water tank, heat of the engine can be transferred to water in the outdoor water tank for heating, energy is saved, and meanwhile the user experience feeling is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management control, and in particular to an outdoor water thermal management control method, system and vehicle thereof. Background Art

[0002] Pure electric vehicles are currently developing rapidly. However, due to the limitations of battery energy density and the low temperature characteristics of the battery itself, using battery packs to heat external water consumes a lot of energy, and the battery pack power is easily consumed in large quantities, affecting driving mileage.

[0003] At present, outdoor hot water includes the following two situations: (1) Use the vehicle power supply port to discharge externally, and use heating equipment such as Heater to heat the vehicle's outdoor water. If the vehicle power supply port is used to discharge externally, it is easy to cause a significant consumption of the battery pack's power. The power consumption for washing and heating at night can reach 1 to 2 degrees, which greatly reduces the cruising range and affects subsequent vehicle use. Especially in low temperature environments, the demand for hot water is large, but the battery pack discharge power will be further reduced, so more electricity will be consumed to meet the outdoor hot water demand.

[0004] (ii) When the vehicle arrives at the camping site, it is connected to the 220V national grid power supply in the camp to heat the outdoor water on the vehicle. If the vehicle waits until the vehicle arrives at the camping site before using the power from the grid to heat the water, it will limit the use of the vehicle and affect the user experience. Summary of the invention

[0005] The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention proposes an outdoor water thermal management control method, system and vehicle thereof.

[0006] According to an outdoor water thermal management control method according to an embodiment of the first aspect of the present invention, the method is applied to a thermal management system, wherein the thermal management system includes: an engine, a battery pack, a first water pump, a three-way proportional valve, a heater, a water temperature sensor, a second water pump and an outdoor water tank, wherein: A liquid-to-liquid heat exchanger having an input end and an output end, The first water pump, the three-way proportional valve and the input end of the liquid-liquid heat exchanger form a primary water circuit, which is connected to the engine cooling pipeline; The second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; The control method comprises: S100, obtaining the engine start status and the remaining power of the battery pack; S200, switching the operating mode according to the starting state of the engine and the remaining power of the battery pack, executing a corresponding thermal management strategy based on each operating mode, and outputting heat to the secondary water circuit. In a possible implementation manner of the first aspect, the working mode includes four working modes, corresponding to a first working mode, a second working mode, a third working mode, and a fourth working mode, respectively; The thermal management strategies include a first strategy, a second strategy, a third strategy, a fourth strategy and a fifth strategy.

[0007] In a possible implementation of the first aspect, the S200 further includes determining whether a preset condition is met according to the start state of the engine and the remaining power of the battery pack, and switching the working mode according to the preset condition met, specifically: S201, determining whether the engine has been started, if so, jumping to S202; if not, jumping to S203; S202, determining whether the remaining battery power of the battery pack is not less than a first preset threshold, if so, switching to the first working mode, if not, switching to the second working mode; S203, determining whether the remaining battery power of the battery pack is not less than a second preset threshold value, if so, switching to the third working mode, if not, switching to the fourth working mode.

[0008] In a possible implementation of the first aspect, executing a corresponding thermal management strategy based on each working mode specifically includes the following contents: When the thermal management system is in the first working mode, it is determined whether the water temperature of the primary water circuit is not lower than the first preset temperature. If not, the thermal management system executes the first strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the second working mode, it is determined whether the water temperature of the primary water circuit is not lower than the second preset temperature. If not, the thermal management system executes the third strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the third operating mode, the thermal management system executes a fourth strategy; When the thermal management system is in the fourth operating mode, the thermal management system executes a fifth strategy.

[0009] In a possible implementation manner of the first aspect, The first strategy includes: the primary water circuit operates normally, and heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger. At the same time, the battery pack supplies power and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the water temperature reaches a first preset temperature; The second strategy includes: the primary water circuit operates normally, heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack does not supply power; The third strategy includes: the primary water circuit operates normally, and heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger until the water temperature reaches a first preset temperature; The fourth strategy includes: the primary water circuit does not operate, the battery pack supplies power, and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the remaining battery power of the battery pack is less than a second preset threshold; The fifth strategy includes: requesting the engine to start, the primary water circuit to operate normally, exchanging heat to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack not supplying power until the water temperature reaches a second preset temperature.

[0010] In a possible implementation manner of the first aspect, the primary water circuit further includes a three-way proportional valve, and the three-way proportional valve is connected in series to the primary water circuit.

[0011] In a possible implementation manner of the first aspect, the first preset temperature is equal to the second preset temperature.

[0012] In a possible implementation manner of the first aspect, the first preset threshold is equal to the second preset threshold.

[0013] According to the outdoor water thermal management control method of the embodiment of the present invention, a more economical and energy-saving working mode can be formulated according to the engine startup state and the remaining power state of the battery pack to meet the outdoor hot water demand and improve the utilization rate of resources. By connecting the water circuit of the vehicle and the water circuit of the outdoor water tank, the heat of the engine itself can be transferred to the water in the outdoor water tank for heating. At the same time, the present invention can also have both engine water circuit and battery pack discharge heating modes, so that outdoor hot water can be used faster and the user experience can be improved.

[0014] An outdoor water thermal management control system according to an embodiment of the second aspect of the present invention comprises: engine; A liquid-to-liquid heat exchanger having an input end and an output end, First water pump; A three-way proportional valve, wherein the three-way proportional valve, the first water pump and the input end of the liquid-liquid heat exchanger form a primary water circuit connected to an engine cooling pipeline; Battery pack; Second water pump; Heater; Water temperature sensor; An outdoor water tank, the second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; An acquisition module is used to obtain the engine start status and the remaining power of the battery pack; The control module is used to switch the working mode according to the starting state of the engine and the remaining power of the battery pack, execute a corresponding thermal management strategy based on each working mode, and output heat to the secondary water circuit.

[0015] According to a third aspect of an embodiment of the present invention, a vehicle is provided, wherein the vehicle is equipped with an outdoor water thermal management control system, and the system is used to execute the outdoor water thermal management control method as described above.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a flow chart of an outdoor water thermal management control method according to an embodiment of the present invention; Figure 2 is a flowchart of some steps in S200 of the outdoor water thermal management control method according to an embodiment of the present invention; Figure 3 4 is a structural diagram of an outdoor water thermal management control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] The terms "first", "second", "third", etc. in the specification and claims of the present application and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or optionally, steps or units not listed are included, or optionally, other steps or units inherent to these processes, methods, products or devices are included.

[0023] Only the part relevant to the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. When its operation is completed, the process can be terminated, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0024] The terms "component", "module", "system", "unit", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. Units can communicate through local and / or remote processes, for example, based on signals having one or more data packets (e.g., data from a second unit interacting with another unit in a local system, a distributed system, and / or a network. For example, the Internet interacts with other systems via signals).

[0025] Example 1 See also Figure 1 As shown, this embodiment provides an outdoor water thermal management control method, which is applied to a thermal management system, the thermal management system includes: an engine, a battery pack, a first water pump, a three-way proportional valve, a heater, a water temperature sensor, a second water pump and an outdoor water tank, wherein: The liquid-liquid heat exchanger has an input end and an output end, and the liquid medium in the liquid-liquid heat exchanger is water.

[0026] The first water pump, the three-way proportional valve and the input end of the liquid-liquid heat exchanger form a primary water circuit, which is connected to the engine cooling pipeline; The second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; It should be noted that, in this embodiment, the heater is a PTC heater, which is safer and more economical than other heating elements.

[0027] It should be noted that, in this embodiment, the water temperature in the primary water circuit is regulated by a three-way proportional valve, and the energy exceeding the water temperature can be used to charge the battery pack through the energy conversion device. The function of the three-way proportional valve is to adjust the proportion of the engine heat source introduced (not introducing the engine coolant or introducing the engine coolant at a certain proportion); its effect is to control the size of the engine heat source and thus control the water temperature.

[0028] The control method comprises: S100, obtaining the engine start status and the remaining power of the battery pack; S200, switching the operating mode according to the starting state of the engine and the remaining power of the battery pack, executing a corresponding thermal management strategy based on each operating mode, and outputting heat to the secondary water circuit, wherein the operating mode includes four operating modes, corresponding to the first operating mode, the second operating mode, the third operating mode and the fourth operating mode respectively, and the thermal management strategy includes a first strategy, a second strategy, a third strategy, a fourth strategy and a fifth strategy.

[0029] It should be noted that the S200 also includes determining whether a preset condition is met according to the start-up state of the engine and the remaining power of the battery pack, and switching the working mode according to the preset condition met, specifically: S201, determining whether the engine has been started, if so, jumping to S202; if not, jumping to S203; S202, determining whether the remaining battery power of the battery pack is not less than a first preset threshold, if so, switching to the first working mode, if not, switching to the second working mode; S203, determining whether the remaining battery power of the battery pack is not less than a second preset threshold value, if so, switching to the third working mode, if not, switching to the fourth working mode.

[0030] It should be noted that the corresponding thermal management strategy is implemented based on each working mode, including the following: When the thermal management system is in the first working mode, it is determined whether the water temperature of the primary water circuit is not lower than the first preset temperature. If not, the thermal management system executes the first strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the second working mode, it is determined whether the water temperature of the primary water circuit is not lower than the second preset temperature. If not, the thermal management system executes the third strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the third operating mode, the thermal management system executes a fourth strategy; When the thermal management system is in the fourth operating mode, the thermal management system executes a fifth strategy.

[0031] It should be noted that the first strategy includes: the primary water circuit operates normally, and heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger. At the same time, the battery pack supplies power and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the water temperature reaches the first preset temperature; The second strategy includes: the primary water circuit operates normally, heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack does not supply power; The third strategy includes: the primary water circuit operates normally, and heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger until the water temperature reaches a first preset temperature; The fourth strategy includes: the primary water circuit does not operate, the battery pack supplies power, and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the remaining battery power of the battery pack is less than a second preset threshold; The fifth strategy includes: requesting the engine to start, the primary water circuit to operate normally, exchanging heat to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack not supplying power until the water temperature reaches a second preset temperature.

[0032] It should be noted that in the first working mode, the second working mode and the fourth working mode, during the execution of each strategy, if the target water temperature reaches the preset temperature, the engine's own excess energy is used to charge the battery pack through the vehicle's built-in energy conversion device. The battery pack is charged based on the engine water circuit heating and the engine's excess power. The two work in combination, and combined with the engine Map intelligent control, the energy recovery of the engine in this embodiment can be more thorough.

[0033] It should be noted that, in this embodiment, the first preset temperature is equal to the second preset temperature, and the water temperature is 65°C, which can not only meet the user's outdoor hot water needs, but also avoid more energy consumption, and the energy utilization rate is greatly improved.

[0034] It should be noted that, in this embodiment, the first preset threshold is equal to the second preset threshold, and the preset threshold is 30%, which is used to ensure that the vehicle battery pack meets travel needs while increasing outdoor hot water needs, avoiding serious battery pack power loss, causing travel failures, and affecting normal vehicle use.

[0035] According to the outdoor water thermal management control method of the embodiment of the present invention, a more economical and energy-saving working mode can be formulated according to the engine startup state and the remaining power state of the battery pack to meet the demand for outdoor hot water and improve resource utilization. By connecting the water circuit of the vehicle and the water circuit of the outdoor water tank, the three methods of battery energy supply for water heating, engine water circuit heating, and vehicle external power supply water heating are strategically managed in a compatible manner, so that the heat of the engine itself can be transferred to the water in the outdoor water tank for heating. At the same time, the present invention can also have both engine water circuit and battery pack discharge heating modes, so that outdoor hot water can be used faster, the heating efficiency can be improved, and the power consumption of the vehicle battery pack can be reduced, thereby improving the user experience.

[0036] Example 2 See also Figure 2 As shown, this embodiment provides an outdoor water thermal management control system, which includes: An engine, wherein the engine connecting pipeline forms an engine cooling system; A liquid-to-liquid heat exchanger having an input end and an output end, First water pump; A three-way proportional valve, wherein the three-way proportional valve, the first water pump and the input end of the liquid-liquid heat exchanger form a primary water circuit connected to an engine cooling pipeline; Battery pack; Second water pump; Heater; Water temperature sensor; An outdoor water tank, the second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; An acquisition module is used to obtain the engine start status and the remaining power of the battery pack; A control module is used to switch the working mode according to the starting state of the engine and the remaining power of the battery pack, execute a corresponding thermal management strategy based on each working mode, and output heat to the secondary water circuit, wherein the working mode includes four working modes, corresponding to the first working mode, the second working mode, the third working mode and the fourth working mode respectively, and the thermal management strategy includes the first strategy, the second strategy, the third strategy, the fourth strategy and the fifth strategy.

[0037] It should be noted that the control module determines whether a preset condition is met according to the start-up state of the engine and the remaining power of the battery pack, and switches the working mode according to the preset condition met, specifically: S201, determining whether the engine has been started, if so, jumping to S202; if not, jumping to S203; S202, determining whether the remaining battery power of the battery pack is not less than a first preset threshold, if so, switching to the first working mode, if not, switching to the second working mode; S203, determining whether the remaining battery power of the battery pack is not less than a second preset threshold value, if so, switching to the third working mode, if not, switching to the fourth working mode.

[0038] It should be noted that the corresponding thermal management strategy is implemented based on each working mode, including the following: When the thermal management system is in the first working mode, it is determined whether the water temperature of the primary water circuit is not lower than the first preset temperature. If not, the thermal management system executes the first strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the second working mode, it is determined whether the water temperature of the primary water circuit is not lower than the second preset temperature. If not, the thermal management system executes the third strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the third operating mode, the thermal management system executes a fourth strategy; When the thermal management system is in the fourth operating mode, the thermal management system executes a fifth strategy.

[0039] It should be noted that the first strategy includes: the primary water circuit operates normally, and heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger. At the same time, the battery pack supplies power and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the water temperature reaches the first preset temperature; The second strategy includes: the primary water circuit operates normally, heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack does not supply power; The third strategy includes: the primary water circuit operates normally, and heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger until the water temperature reaches a first preset temperature; The fourth strategy includes: the primary water circuit does not operate, the battery pack supplies power, and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the remaining battery power of the battery pack is less than a second preset threshold; The fifth strategy includes: requesting the engine to start, the primary water circuit to operate normally, exchanging heat to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack not supplying power until the water temperature reaches a second preset temperature.

[0040] It should be noted that in the first working mode, the second working mode and the fourth working mode, during the execution of each strategy, if the target water temperature reaches the preset temperature, the engine's own excess energy is used to charge the battery pack through the vehicle's built-in energy conversion device. The battery pack is charged based on the engine water circuit heating and the engine's excess power, and the work is superimposed. Combined with the engine Map intelligent control, this embodiment can make the engine energy recovery more thorough.

[0041] It should be noted that, in this embodiment, the first preset temperature is equal to the second preset temperature, and the water temperature is 65°C, which can not only meet the user's outdoor hot water needs, but also avoid more energy consumption, and the energy utilization rate is greatly improved.

[0042] It should be noted that, in this embodiment, the first preset threshold is equal to the second preset threshold, and the preset threshold is 30%, which is used to ensure that the vehicle battery pack meets travel needs while increasing outdoor hot water needs, avoiding serious battery pack power loss, causing travel failures, and affecting normal vehicle use.

[0043] An outdoor water heat management control system in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (NAS), a personal computer (PC), etc., which is not specifically limited in the embodiment of the present application.

[0044] An outdoor water heat management control system in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0045] An outdoor water heat management control system provided in the embodiment of the present application can achieve Figure 1 The various processes implemented by the method embodiment of an outdoor water thermal management control method will not be described here to avoid repetition.

[0046] According to the outdoor water thermal management control system of the embodiment of the present invention, a more economical and energy-saving working mode can be formulated according to the engine startup state and the remaining power state of the battery pack to meet the demand for outdoor hot water and improve the utilization rate of resources. By connecting the water circuit of the vehicle and the water circuit of the outdoor water tank, the heat of the engine itself can be transferred to the water in the outdoor water tank for heating. At the same time, the present invention can also have both engine water circuit and battery pack discharge heating modes, so that outdoor hot water can be used faster and the user experience can be improved.

[0047] Optionally, an embodiment of the present application also provides an electronic device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned outdoor water thermal management control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0048] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned outdoor water thermal management control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0049] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0050] Example 3 This embodiment provides a vehicle, wherein the vehicle is equipped with an outdoor water thermal management control system, and the system is used to execute the outdoor water thermal management control method as described in Embodiment 1.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0053] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0054] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for outdoor water thermal management control, characterized in that: Applied to a thermal management system, the thermal management system includes: an engine, a battery pack, a first water pump, a three-way proportional valve, a heater, a water temperature sensor, a second water pump and an outdoor water tank, wherein: A liquid-to-liquid heat exchanger having an input end and an output end, The first water pump, the three-way proportional valve and the input end of the liquid-liquid heat exchanger form a primary water circuit, which is connected to the engine cooling pipeline; The second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; The control method comprises: S100, obtaining the engine start status and the remaining power of the battery pack; S200, switching the operating mode according to the starting state of the engine and the remaining power of the battery pack, executing a corresponding thermal management strategy based on each operating mode, and outputting heat to the secondary water circuit.

2. The outdoor water thermal management control method according to claim 1, characterized in that: The working modes include a first working mode, a second working mode, a third working mode and a fourth working mode.

3. The outdoor water thermal management control method according to claim 1, characterized in that: The S200 also includes determining whether a preset condition is met according to the starting state of the engine and the remaining power of the battery pack, and switching the working mode according to the preset condition being met.

4. The outdoor water thermal management control method according to claim 2, characterized in that: Based on each working mode, the corresponding thermal management strategy is implemented, including the following: When the thermal management system is in the first working mode, it is determined whether the water temperature of the primary water circuit is not lower than the first preset temperature. If not, the thermal management system executes the first strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the second working mode, it is determined whether the water temperature of the primary water circuit is not lower than the second preset temperature. If not, the thermal management system executes the third strategy. If yes, the thermal management system executes the second strategy. When the thermal management system is in the third operating mode, the thermal management system executes a fourth strategy; When the thermal management system is in the fourth operating mode, the thermal management system implements a fifth strategy.

5. The outdoor water thermal management control method according to claim 4, characterized in that: The first strategy includes: the primary water circuit operates normally, and heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger. At the same time, the battery pack supplies power and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the water temperature reaches a first preset temperature; The second strategy includes: the primary water circuit operates normally, heat is transferred to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack does not supply power; The third strategy includes: the primary water circuit operates normally, and heat is exchanged to the secondary water circuit through the liquid-liquid heat exchanger until the water temperature reaches a first preset temperature; The fourth strategy includes: the primary water circuit does not operate, the battery pack supplies power, and the heater is turned on synchronously to increase the water temperature of the secondary water circuit until the remaining battery power of the battery pack is less than a second preset threshold; The fifth strategy includes: requesting the engine to start, the primary water circuit to operate normally, exchanging heat to the secondary water circuit through the liquid-liquid heat exchanger, and the battery pack not supplying power until the water temperature reaches a second preset temperature.

6. The outdoor water thermal management control method according to claim 4, characterized in that: The primary water circuit further comprises a three-way proportional valve, and the three-way proportional valve is connected in series to the primary water circuit.

7. The outdoor water thermal management control method according to claim 6, characterized in that: The first preset temperature is equal to the second preset temperature.

8. The outdoor water thermal management control method according to claim 6, characterized in that: The first preset threshold is equal to the second preset threshold.

9. An outdoor water thermal management control system, characterized in that: include: engine; A liquid-to-liquid heat exchanger having an input end and an output end, First water pump; A three-way proportional valve, wherein the three-way proportional valve, the first water pump and the input end of the liquid-liquid heat exchanger form a primary water circuit connected to an engine cooling pipeline; Battery pack; Second water pump; Heater; Water temperature sensor; An outdoor water tank, the second water pump, the heater, the water temperature sensor, the outdoor water tank and the output end of the liquid-liquid heat exchanger form a secondary water circuit, and the heater is connected to the battery pack; An acquisition module is used to obtain the engine start status and the remaining power of the battery pack; The control module is used to switch the working mode according to the starting state of the engine and the remaining power of the battery pack, execute a corresponding thermal management strategy based on each working mode, and output heat to the secondary water circuit.

10. A vehicle, characterized in that: The vehicle is equipped with an outdoor water thermal management control system, and the system is used to execute the outdoor water thermal management control method according to any one of claims 1 to 7.

Images