Pure electric heating pipeline, heat management system control method and related device

Abstract

The embodiment of the invention provides a pure electric heating pipeline, a heat management system control method and a related device, and relates to the technical field of hybrid extended-range vehicle types. A first port, a second port and a fifth port of a multi-way valve group are all communicated with an engine pipeline, and a fourth port of the multi-way valve group is communicated with an inlet of a thermosensitive water pump; a water outlet of the thermosensitive water pump is communicated with an inlet of the pure electric heating pipeline, a third port of the multi-way valve group is communicated with an outlet of the pure electric heating pipeline, a first port of the multi-way valve group is the inlet of the pure electric heating pipeline, a second port of the multi-way valve group is the outlet of the pure electric heating pipeline, and the first port of the multi-way valve group is closed in a pure electric heating mode. In the pure electric heating mode, the first port of the multi-way valve set is closed, circulation of cooling liquid in the pure electric heating pipeline and liquid in the engine pipeline is avoided, the temperature of the cooling liquid in the engine pipeline is prevented from being affected, and therefore the accuracy of calculating the fuel injection quantity is improved, and the problem that cold start is not successful is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid extended-range vehicles, and in particular to a pure electric heating pipeline, a thermal management system control method and related devices. Background Art

[0002] With the rapid development of the automobile industry, new energy vehicle technology continues to improve, especially in heating technology. New energy vehicles include extended-range and hybrid models, which usually use a combination of engine waste heat and water heaters for heating to meet heating needs under different conditions.

[0003] When users travel long distances, extended-range hybrid vehicles usually use pure electric mode first, then start the engine and use hybrid or extended-range mode. During the pure electric driving stage, the water heater will heat the antifreeze in the circuit to provide heating. Therefore, when the engine is cold started, the fuel injection amount may not match the current temperature due to misjudgment of the engine water temperature, resulting in an unsuccessful cold start. Summary of the invention

[0004] The object of the present invention is to provide a pure electric heating pipeline, a thermal management system control method and related devices to solve the problem of unsuccessful cold start.

[0005] In a first aspect, the present invention provides a pure electric heating pipeline, which comprises a multi-way valve group, a thermal water pump and a pure electric heating pipeline;

[0006] The first port, the second port and the fifth port of the multi-way valve group are all connected to the engine pipeline, the fourth port of the multi-way valve group is connected to the inlet of the thermal water pump, the water outlet of the thermal water pump is connected to the inlet of the pure electric heating pipeline, and the third port of the multi-way valve group is connected to the outlet of the pure electric heating pipeline; wherein the first port of the multi-way valve group is the inlet of the pure electric heating pipeline, and the second port of the multi-way valve group is the outlet of the pure electric heating pipeline;

[0007] The first port of the multi-way valve group is closed in the pure electric heating mode.

[0008] In an optional embodiment, the first port of the multi-way valve group is opened in the engine heating mode.

[0009] In an optional embodiment, the multi-way valve group includes a first four-way pipe and a three-way valve;

[0010] The first port and the second port of the first four-way pipe are both connected to the engine pipeline, the third port of the first four-way pipe is connected to the first port of the three-way valve, and the fourth port of the first four-way pipe is connected to the outlet of the pure electric heating pipeline;

[0011] The second port of the three-way valve is connected to the engine pipeline, and the third port of the three-way valve is connected to the inlet of the thermal water pump; the second port and the third port of the three-way valve are respectively the first port and the fourth port of the multi-way valve group, and the first port, the second port and the fourth port of the first four-way pipe are respectively the second port, the fifth port and the third port of the multi-way valve group.

[0012] In an optional embodiment, the multi-way valve group includes a four-way valve and a first three-way pipe, and the pure electric heating pipeline includes a heating component and a heat exchanger;

[0013] The first port and the second port of the four-way valve are both connected to the engine pipeline, the third port of the four-way valve is connected to the outlet of the heat exchanger, and the fourth port of the four-way valve is connected to the inlet of the thermal water pump;

[0014] The outlet of the thermal water pump is connected to the inlet of the heating assembly, the outlet of the heating assembly is connected to the third port of the first three-way pipe, the second port of the first three-way pipe is connected to the engine pipeline, and the third port of the first three-way pipe is connected to the inlet of the heat exchanger;

[0015] The first port, the second port, the third port and the fourth port of the four-way valve are respectively the first port, the second port, the third port and the fourth port of the multi-way valve group, and the second port of the first three-way pipe is the fifth port of the multi-way valve group.

[0016] In a second aspect, the present invention provides a thermal management system for a hybrid range-extended vehicle, the thermal management system for the hybrid range-extended vehicle comprising: an engine pipeline and the pure electric heating pipeline described in any one of the aforementioned embodiments.

[0017] In an optional embodiment, the engine pipeline includes an engine internal pipeline and an engine external pipeline;

[0018] The first pipeline connection end of the internal pipeline of the engine is connected to the first port of the multi-way valve group, the second pipeline connection end of the internal pipeline of the engine is connected to the second port of the multi-way valve group and the first pipeline connection end of the external pipeline of the engine, and the second pipeline connection end of the external pipeline of the engine is connected to the fifth port of the multi-way valve group.

[0019] In an optional embodiment, the engine external pipeline includes a first one-way valve and a water storage bottle;

[0020] The inlet of the first one-way valve is communicated with the fifth port of the multi-way valve group, the outlet of the first one-way valve is communicated with the inlet of the water storage bottle, and the outlet of the water storage bottle is communicated with the second pipeline connection end of the internal pipeline of the engine; the inlet of the first one-way valve is the second pipeline connection end of the external pipeline of the engine, and the outlet of the water storage bottle is the first pipeline connection end of the external pipeline of the engine.

[0021] In an optional embodiment, the engine internal pipeline also includes an engine cooling water jacket, a thermostat and an engine water pump;

[0022] The inlet of the engine water pump is communicated with the outlet of the water storage bottle and the second port of the multi-way valve group respectively, the outlet of the engine water pump is communicated with the inlet of the engine cooling water jacket, the outlet of the cooling water jacket is communicated with the inlet of the thermostat, the first outlet of the thermostat is communicated with the first port of the multi-way valve group, the second outlet of the thermostat is communicated with the engine water pump, and the third outlet of the thermostat is communicated with the first pipeline connection end of the engine external pipeline; the inlet of the engine water pump and the third outlet of the thermostat are both the second pipeline connection ends of the engine internal pipeline, and the first outlet of the thermostat is the first pipeline connection end of the engine internal pipeline.

[0023] In a third aspect, the present invention provides a hybrid range-extended vehicle, comprising a controller and a thermal management system of the hybrid range-extended vehicle as described in any one of the aforementioned embodiments.

[0024] In a fourth aspect, the present invention provides a thermal management system control method, which is applied to the controller of the hybrid range-extended vehicle described in the aforementioned embodiment, wherein the controller is communicatively connected to the multi-way valve group in the thermal management system of the hybrid range-extended vehicle described in the aforementioned embodiment, and the method comprises:

[0025] In the pure electric heating mode, controlling the first port of the multi-way valve group to be closed;

[0026] In the engine heating mode, the first port of the multi-way valve group is controlled to open.

[0027] The pure electric heating pipeline, thermal management system control method and related devices provided by the embodiment of the present invention, the pure electric heating pipeline includes a multi-way valve group, a thermal water pump and a pure electric heating pipeline, the first port, the second port and the fifth port of the multi-way valve group are all connected to the engine pipeline, the fourth port of the multi-way valve group is connected to the inlet of the thermal water pump, the water outlet of the thermal water pump is connected to the inlet of the pure electric heating pipeline, and the third port of the multi-way valve group is connected to the outlet of the pure electric heating pipeline, wherein the first port of the multi-way valve group is the inlet of the pure electric heating pipeline, the second port of the multi-way valve group is the outlet of the pure electric heating pipeline, and the first port of the multi-way valve group is closed in the pure electric heating mode. By closing the first port of the multi-way valve group in the pure electric heating mode, the coolant in the pure electric heating pipeline and the liquid in the engine pipeline are prevented from circulating, and the temperature of the coolant in the engine pipeline is prevented from being affected, thereby improving the accuracy of calculating the injection amount, and thus avoiding the problem of unsuccessful cold start. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of a pure electric heating pipeline provided by an embodiment of the present invention is shown;

[0030] Figure 2 A schematic diagram of a multi-way valve group provided in an embodiment of the present invention is shown;

[0031] Figure 3 Another schematic diagram of a multi-way valve group provided by an embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram of an engine pipeline provided by an embodiment of the present invention is shown;

[0033] Figure 5 A schematic diagram of an external pipeline of an engine provided by an embodiment of the present invention is shown;

[0034] Figure 6 Another schematic diagram of an external pipeline of an engine provided by an embodiment of the present invention is shown;

[0035] Figure 7 A schematic diagram of an internal pipeline of an engine provided by an embodiment of the present invention is shown;

[0036] Figure 8 Another schematic diagram of the internal pipeline of the engine provided by the embodiment of the present invention is shown;

[0037] Fig. 9 A schematic diagram of a thermal management system for a hybrid range-extended vehicle provided by an embodiment of the present invention is shown;

[0038] Fig.10 Another schematic diagram of a thermal management system for a hybrid range-extended vehicle provided by an embodiment of the present invention is shown.

[0039] Icons: 100-pure electric heating pipeline; 110-multi-way valve group; 111-first four-way pipe; 112-three-way valve; 131-heating component; 132-heat exchanger; 113-four-way valve; 114-first three-way pipe; 120-thermal water pump; 130-pure electric heating pipeline; 200-engine pipeline; 210-engine internal pipeline; 211-engine cooling water jacket; 212-thermostat; 214-third one-way valve; 215-third three-way pipe; 216-fourth three-way pipe; 217-fifth three-way pipe through pipe; 218-second four-way pipe; 219-cooler; 220-engine external pipeline; 221-first one-way valve; 222-water storage bottle; 223-second three-way pipe; 224-second one-way valve; 225-radiator; 226-electronic fan; 227-first temperature sensor; B1-first pipeline connection end of the engine internal pipeline; B2-second pipeline connection end of the engine internal pipeline; C1-first pipeline connection end of the engine external pipeline; C2-second pipeline connection end of the engine external pipeline. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0043] See also Figure 1 , Figure 1 A schematic diagram of a pure electric heating pipeline 100 provided in an embodiment of the present invention is shown. The pure electric heating pipeline 100 includes a multi-way valve group 110, a thermal water pump 120 and a pure electric heating pipeline 130.

[0044] The first port A1, the second port A2 and the fifth port A5 of the multi-way valve group 110 are all connected to the engine pipeline 200, the fourth port A4 of the multi-way valve group 110 is connected to the inlet of the thermal water pump 120, the water outlet of the thermal water pump 120 is connected to the inlet of the pure electric heating pipeline 130, and the third port A3 of the multi-way valve group 110 is connected to the outlet of the pure electric heating pipeline 130.

[0045] Among them, the first port of the multi-way valve group 110 is the inlet of the pure electric heating pipeline 100, and the second port A2 of the multi-way valve group 110 is the outlet of the pure electric heating pipeline 100.

[0046] In some embodiments, the first port A1 of the multi-way valve assembly 110 is closed in the pure electric heating mode.

[0047] The pure electric heating pipeline 100 provided in an embodiment of the present invention can prevent the coolant in the pure electric heating pipeline 100 and the coolant in the engine pipeline 200 from circulating in the pure electric heating mode by closing the first port of the multi-way valve group 110. Such circulation may cause the coolant temperature in the engine pipeline 200 to fluctuate. The calculation of the engine fuel injection amount depends on the feedback of the engine temperature. If the temperature of the coolant in the engine pipeline 200 fluctuates due to the circulation, the calculation of the fuel injection amount will deviate. By preventing the coolant in the pure electric heating pipeline 100 and the coolant in the engine pipeline 200 from circulating, the engine temperature can be ensured to remain stable, thereby improving the accuracy of the fuel injection amount calculation.

[0048] Furthermore, if the temperature in the engine pipeline 200 is higher than the actual temperature of the engine itself, the calculated fuel injection amount will be lower, and the actual fuel injection amount will be lower than the fuel injection amount required for the actual start of the engine, thereby causing a cold start failure. When the engine is restarted, the fuel injection amount will increase, and the fuel injection amount will exceed the actual demand, thereby causing emissions to exceed the standard.

[0049] In some embodiments, the extended-range hybrid vehicle model also has an engine heating mode. In order to introduce the coolant in the engine pipeline 200 into the pure electric heating pipeline 100, the first port of the multi-way valve group 110 is opened in the engine heating mode.

[0050] It can be understood that, when the first port A1 of the multi-way valve group 110 is opened, the heated coolant in the engine pipeline 200 can enter the pure electric heating pipeline 100 through the first port A1 of the multi-way valve group 110, and the thermal water pump 120 is working. The thermal water pump 120 can extract the coolant in the engine pipeline 200 from the fourth port A4 of the multi-way valve group 110, transfer it to the third port of the multi-way valve group 110 through the pure electric heating pipeline 130, and then return to the engine pipeline 200 through the second port of the multi-way valve group 110.

[0051] In some embodiments, if abnormal noise occurs in the pure electric heating pipeline 100 due to the presence of air, the vehicle mode can be switched to the engine heating mode, and the first port A1 of the multi-way valve group 110 can be opened to evacuate the pure electric heating pipeline 100 through the engine heating mode, and the gas in the pure electric heating pipeline 100 can be discharged into the water bottle 222 in the engine pipeline 200 through the fifth port of the multi-way valve group 110.

[0052] See also Figure 2-Figure 10 The first port, second port, third port and fourth port of the four-way pipe are 1, 2, 3 and 4 as shown in the figure respectively; the first port, second port and third port of the three-way pipe are 5, 6 and 7 as shown in the figure respectively; the first port, second port and third port of the three-way valve are a, b and c as shown in the figure respectively; the first port, second port, third port and fourth port of the four-way valve are e, f, g and h as shown in the figure respectively.

[0053] In some embodiments, Figure 2 As shown, the multi-way valve assembly 110 includes a first four-way pipe 111 and a three-way valve 112 .

[0054] The first and second ports of the first four-way pipe 111 are both connected to the engine pipeline 200 , the third port of the first four-way pipe 111 is connected to the first port of the three-way valve 112 , and the fourth port of the first four-way pipe 111 is connected to the outlet of the pure electric heating pipeline 130 .

[0055] The second port of the three-way valve 112 is connected to the engine pipeline 200, and the third port of the three-way valve 112 is connected to the inlet of the thermal water pump 120; the second port and the third port of the three-way valve 112 are respectively the first port and the fourth port of the multi-way valve group 110, and the first port, the second port and the fourth port of the first four-way pipe 111 are respectively the second port, the fifth port and the third port of the multi-way valve group 110.

[0056] It can be understood that the four ports of the first four-way pipe 111 are all located at the same node, so the pressure differences of the four ports of the first four-way pipe 111 are equal. Since the third port of the first four-way pipe 111 is connected to the inlet of the thermal water pump 120, when the thermal water pump 120 is working, the coolant in the pure electric heating pipeline 100 will flow from the fourth port of the first four-way pipe 111 to the third port of the first four-way pipe 111 and will not flow into the first port of the first four-way pipe 111 and the second port of the first four-way pipe 111. In addition, the first port of the three-way valve 112 is closed in the pure electric heating mode. Therefore, in the pure electric heating mode, the coolant in the pure electric heating pipeline 100 will not enter the engine pipeline 200, and the coolant in the engine pipeline 200 will not enter the pure electric heating pipeline 100. The coolant in the pure electric heating pipeline 100 and the coolant in the pure electric heating pipeline 100 will not circulate.

[0057] In some embodiments, Figure 3 As shown, the multi-way valve group 110 includes a four-way valve 113 and a first three-way pipe 114 , and the pure electric heating pipeline 130 includes a heating component 131 and a heat exchanger 132 .

[0058] The heating assembly 131 may include a thermal sensitive component (Positive Temperature Coefficient, PTC), which is not limited here. The heat exchanger 132 may include a warm air core, which is not limited here.

[0059] The first and second ports of the four-way valve 113 are both connected to the engine pipeline 200 , the third port of the four-way valve 113 is connected to the outlet of the heat exchanger 132 , and the fourth port of the four-way valve 113 is connected to the inlet of the thermal water pump 120 .

[0060] The outlet of the thermal water pump 120 is connected to the inlet of the heating component 131, the outlet of the heating component 131 is connected to the third port of the first three-way pipe 114, the second port of the first three-way pipe 114 is connected to the engine pipeline 200, and the third port of the first three-way pipe 114 is connected to the inlet of the heat exchanger 132.

[0061] The first port, the second port, the third port and the fourth port of the four-way valve 113 are respectively the first port, the second port, the third port and the fourth port of the multi-way valve group 110 , and the second port of the first three-way pipe 114 is the fifth port of the multi-way valve group 110 .

[0062] In actual applications, many vehicles use hybrid or extended-range power technology, which makes the vehicle's thermal management system more complicated. It not only needs to consider the heating needs in pure electric mode, but also the heat management and distribution of the engine under different working conditions.

[0063] In order to adapt to the heat management and distribution of the engine under different working conditions, the embodiment of the present invention also provides a thermal management system for a hybrid range-extended vehicle, such as Figure 4 As shown, the thermal management system of the hybrid extended-range vehicle includes: an engine pipeline 200 and the above-mentioned pure electric heating pipeline 100.

[0064] The engine pipeline 200 includes an engine internal pipeline 210 and an engine external pipeline 220 .

[0065] The first pipeline connection end B1 of the internal pipeline of the engine is connected to the first port A1 of the multi-way valve group 110, the second pipeline connection end B2 of the internal pipeline of the engine is connected to the second A2 port of the multi-way valve group 110 and the first pipeline connection end C1 of the external pipeline of the engine, and the second pipeline connection end C2 of the external pipeline of the engine is connected to the fifth port A5 of the multi-way valve group 110.

[0066] In some embodiments, Figure 5 As shown, the engine external pipeline 220 includes a first one-way valve 221 and a water storage bottle 222 .

[0067] The inlet of the first one-way valve 221 is connected to the fifth port A5 of the multi-way valve group 110, the outlet of the first one-way valve 221 is connected to the inlet of the water bottle 222, the outlet of the water bottle 222 is connected to the second pipeline connection end B2 of the internal pipeline of the engine, the second pipeline connection end C2 of the external pipeline of the engine is the inlet of the first one-way valve 221, and the first pipeline connection end C1 of the external pipeline of the engine includes the outlet of the water bottle 222.

[0068] like Figure 6 As shown, the engine external pipeline 220 also includes a second three-way pipe 223 , a second one-way valve 224 , a radiator 225 , an electronic fan 226 and a first temperature sensor 227 . The radiator 225 is provided with the first temperature sensor 227 and the electronic fan 226 .

[0069] The first inlet of the engine water bottle 222 is connected to the outlet of the first one-way valve 221, the second port of the engine water bottle 222 is connected to the second port of the second three-way pipe, and the outlet of the engine water bottle 222 is connected to the second pipeline connection end B2 of the engine internal pipeline.

[0070] The first port of the second three-way pipe 223 is communicated with the outlet of the second one-way valve 224, and the third port of the second three-way pipe 223 is communicated with the second pipeline connecting end B2 of the internal pipeline of the engine.

[0071] The inlet of the second one-way valve 224 is communicated with the outlet of the radiator 225, and the inlet of the radiator 225 is communicated with the second pipeline connection end B2 of the internal pipeline of the engine.

[0072] The third port of the second three-way pipe 223, the outlet of the water storage bottle 222, the outlet of the radiator 225 and the inlet of the radiator 225 are all first pipeline connection ends C1 of the engine external pipeline.

[0073] The electronic fan 226 may be used to cool the coolant in the engine external pipeline 220 according to the temperature monitored by the first temperature sensor 227 .

[0074] The radiator 225 can be used to cooperate with the electronic fan 226 to cool the coolant in the engine external pipeline 220.

[0075] In some embodiments, Figure 7 As shown, the engine internal pipeline 210 includes an engine cooling water jacket 211 , a thermostat 212 and an engine water pump 213 .

[0076] The inlet of the engine water pump 213 is connected to the outlet of the water storage bottle 222 and the second port A2 of the multi-way valve group 110 respectively, the outlet of the engine water pump 213 is connected to the inlet of the engine cooling water jacket 211, the outlet of the cooling water jacket is connected to the inlet of the thermostat 212, the first outlet of the thermostat 212 is connected to the first port of the multi-way valve group 110, the second outlet of the thermostat 212 is connected to the engine water pump, and the third outlet of the thermostat 212 is connected to the first pipeline connection end C1 of the engine external pipeline.

[0077] The inlet of the engine water pump and the third outlet of the thermostat 212 are both the second pipeline connection end B2 of the internal pipeline of the engine, and the first outlet of the thermostat 212 is the first pipeline connection end B1 of the internal pipeline of the engine.

[0078] like Figure 8 As shown, the internal pipeline 210 of the engine also includes a third one-way valve 214, a third three-way pipe 215, a fourth three-way pipe 216, a fifth three-way pipe 217, a second four-way pipe 218, a throttle valve VT, a second temperature sensor T1 and a cooler 219, and the thermostat 212 is provided with a second temperature sensor T2.

[0079] The first port of the fourth three-way pipe 216 is connected to the second port A2 of the multi-way valve assembly 110 , the second port of the fourth three-way pipe 216 is connected to the outlet of the cooler 219 , and the third port of the fourth three-way pipe 216 is connected to the second port of the second four-way pipe 218 .

[0080] The third port of the second cross-connection pipe 218 is connected to the inlet of the engine water pump 213 , the fourth port of the second cross-connection pipe 218 is connected to the outlet of the radiator 225 , and the first port of the second cross-connection pipe 218 is connected to the third port of the third three-way pipe 215 .

[0081] The outlet of the engine water pump is communicated with the first port of the fifth three-way pipe 217 , the second port of the fifth three-way pipe 217 is communicated with the inlet of the cooler 219 , and the third port of the fifth three-way pipe 217 is communicated with the inlet of the engine cooling water jacket 211 .

[0082] The first outlet of the engine cooling water jacket 211 is communicated with the inlet of the throttle valve VT, the outlet of the throttle valve VT is communicated with the third port of the second three-way pipe 223 , and the second outlet of the engine cooling water jacket 211 is communicated with the inlet of the thermostat 212 .

[0083] The first outlet of the thermostat 212 is connected to the first port A1 of the multi-way valve group 110, the second outlet of the thermostat 212 is connected to the inlet of the third one-way valve 214, the outlet of the third one-way valve 214 is connected to the second port of the third three-way pipe 215, the first port of the third three-way pipe 215 is connected to the outlet of the water bottle 222, and the third outlet of the thermostat 212 is connected to the inlet of the radiator 225.

[0084] The third outlet of the thermostat 212 , the first outlet of the third three-way pipe 215 , the first outlet of the engine cooling water jacket 211 , and the fourth outlet of the second four-way pipe 218 are all second pipeline connection ends B1 of the engine internal pipeline 210 .

[0085] In some embodiments, Fig. 9 As shown, the second port of the first four-way pipe 111 is connected to the inlet of the first one-way valve 221 , the first port of the first four-way pipe 111 is connected to the first port of the fourth three-way pipe 216 , and the second port of the three-way valve 112 is connected to the first outlet of the thermostat 212 .

[0086] In some embodiments, Fig.10 As shown, the first port of the four-way valve 113 is connected to the first outlet of the thermostat 212 , the second port of the four-way valve 113 is connected to the first port of the fourth three-way pipe 216 , and the second port of the first three-way pipe 114 is connected to the inlet of the first check valve 221 .

[0087] An embodiment of the present invention further provides a hybrid range-extended vehicle, which includes the above-mentioned thermal management system of the hybrid range-extended vehicle.

[0088] The embodiment of the present invention also provides a thermal management system control method. The thermal management system control method can be applied to a controller, and the controller is communicatively connected to a multi-way valve group in a thermal management system of a hybrid extended-range vehicle. The specific process of this embodiment is described below using the controller as an example. The thermal management system control method can specifically include the following steps:

[0089] In pure electric heating mode, the first port of the multi-way valve group is controlled to be closed;

[0090] In the engine heating mode, the first port of the multi-way valve group is controlled to open.

[0091] In several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0092] If the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pure electric heating pipeline, characterized in that: The pure electric heating pipeline includes a multi-way valve group, a thermal water pump and a pure electric heating pipeline; The first port, the second port and the fifth port of the multi-way valve group are all connected to the engine pipeline, the fourth port of the multi-way valve group is connected to the inlet of the thermal water pump, the water outlet of the thermal water pump is connected to the inlet of the pure electric heating pipeline, and the third port of the multi-way valve group is connected to the outlet of the pure electric heating pipeline; wherein the first port of the multi-way valve group is the inlet of the pure electric heating pipeline, and the second port of the multi-way valve group is the outlet of the pure electric heating pipeline; The first port of the multi-way valve group is closed in the pure electric heating mode.

2. The pure electric heating pipeline according to claim 1, characterized in that: The first port of the multi-way valve group is opened in the engine heating mode.

3. The pure electric heating pipeline according to claim 2 is characterized in that: The multi-way valve group includes a first four-way pipe and a three-way valve; The first port and the second port of the first four-way pipe are both connected to the engine pipeline, the third port of the first four-way pipe is connected to the first port of the three-way valve, and the fourth port of the first four-way pipe is connected to the outlet of the pure electric heating pipeline; The second port of the three-way valve is connected to the engine pipeline, and the third port of the three-way valve is connected to the inlet of the thermal water pump; the second port and the third port of the three-way valve are respectively the first port and the fourth port of the multi-way valve group, and the first port, the second port and the fourth port of the first four-way pipe are respectively the second port, the fifth port and the third port of the multi-way valve group.

4. The pure electric heating pipeline according to claim 2, characterized in that: The multi-way valve group includes a four-way valve and a first three-way pipe, and the pure electric heating pipeline includes a heating component and a heat exchanger; The first port and the second port of the four-way valve are both connected to the engine pipeline, the third port of the four-way valve is connected to the outlet of the heat exchanger, and the fourth port of the four-way valve is connected to the inlet of the thermal water pump; The outlet of the thermal water pump is connected to the inlet of the heating assembly, the outlet of the heating assembly is connected to the third port of the first three-way pipe, the second port of the first three-way pipe is connected to the engine pipeline, and the third port of the first three-way pipe is connected to the inlet of the heat exchanger; The first port, the second port, the third port and the fourth port of the four-way valve are respectively the first port, the second port, the third port and the fourth port of the multi-way valve group, and the second port of the first three-way pipe is the fifth port of the multi-way valve group.

5. A thermal management system for a hybrid range-extended vehicle, characterized in that: The thermal management system of the hybrid range-extended vehicle comprises: an engine pipeline and a pure electric heating pipeline as described in any one of claims 1-4.

6. The thermal management system of the hybrid extended-range vehicle according to claim 5, characterized in that: The engine pipeline includes an engine internal pipeline and an engine external pipeline; The first pipeline connection end of the internal pipeline of the engine is connected to the first port of the multi-way valve group, the second pipeline connection end of the internal pipeline of the engine is connected to the second port of the multi-way valve group and the first pipeline connection end of the external pipeline of the engine, and the second pipeline connection end of the external pipeline of the engine is connected to the fifth port of the multi-way valve group.

7. The thermal management system of the hybrid extended-range vehicle according to claim 6, characterized in that: The engine external pipeline includes a first one-way valve and a water storage bottle; The inlet of the first one-way valve is communicated with the fifth port of the multi-way valve group, the outlet of the first one-way valve is communicated with the inlet of the water storage bottle, and the outlet of the water storage bottle is communicated with the second pipeline connection end of the internal pipeline of the engine; the inlet of the first one-way valve is the second pipeline connection end of the external pipeline of the engine, and the outlet of the water storage bottle is the first pipeline connection end of the external pipeline of the engine.

8. The thermal management system of the hybrid extended-range vehicle according to claim 7, characterized in that: The internal pipeline of the engine also includes an engine cooling water jacket, a thermostat and an engine water pump; The inlet of the engine water pump is communicated with the outlet of the water storage bottle and the second port of the multi-way valve group respectively, the outlet of the engine water pump is communicated with the inlet of the engine cooling water jacket, the outlet of the cooling water jacket is communicated with the inlet of the thermostat, the first outlet of the thermostat is communicated with the first port of the multi-way valve group, the second outlet of the thermostat is communicated with the engine water pump, and the third outlet of the thermostat is communicated with the first pipeline connection end of the engine external pipeline; the inlet of the engine water pump and the third outlet of the thermostat are both the second pipeline connection ends of the engine internal pipeline, and the first outlet of the thermostat is the first pipeline connection end of the engine internal pipeline.

9. A hybrid extended-range vehicle, characterized in that: A thermal management system for a hybrid range-extended vehicle comprising a controller and any one of claims 5-8.

10. A thermal management system control method, characterized in that: The controller applied to the hybrid extended-range vehicle according to claim 9, wherein the controller is communicatively connected to the multi-way valve group, and the method comprises: In the pure electric heating mode, controlling the first port of the multi-way valve group to be closed; In the engine heating mode, the first port of the multi-way valve group is controlled to open.

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