Hybrid power assembly and liquid cooling radiator

Abstract

The utility model provides a hybrid power assembly and a liquid cooling radiator. The liquid cooling radiator comprises an inlet main flow channel, a first branch flow channel, a second branch flow channel, an outlet main flow channel and a valve. And the inlet main runner and the outlet main runner are arranged at intervals. The first branch runner and the second branch runner are respectively arranged between the inlet main runner and the outlet main runner and are respectively communicated with the inlet main runner and the outlet main runner. The valve is arranged in the inlet main flow channel and located between an inlet of the first branch flow channel and an inlet of the second branch flow channel. And the valve is used for enabling the flow of cooling liquid in the first branch flow channel and the second branch flow channel to be different. The valve is arranged in the main flow channel, flow in different branch flow channels is reasonably distributed according to the heat dissipation requirement of the power module on the premise that the total flow of cooling liquid is not increased, the heat dissipation efficiency of the whole radiator is comprehensively improved, and the through-flow capacity of the power module is improved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicles, and in particular to a hybrid powertrain and a liquid-cooled radiator. Background Art

[0002] With the rapid development of the new energy vehicle industry, increasingly integrated power modules are used in the vehicle's power system. These power modules emit a large amount of heat when working, and require efficient heat dissipation measures to ensure their normal operation. A parallel multi-channel heat dissipation structure is usually used to dissipate heat for the power module.

[0003] During the operation of the vehicle's power system, different power modules generate different amounts of heat and emit different amounts of heat. Some power modules have higher heat dissipation requirements, while others do not. In commonly used heat dissipation structures, the flow between each flow channel is evenly distributed. In order to meet the needs of power modules with high heat dissipation requirements, it is often necessary to increase the inlet flow of the heat dissipation structure to improve the flow capacity of the overall heat dissipation structure.

[0004] However, this method will result in low flow utilization and more waste of coolant. Therefore, how to allocate reasonable flow to power modules according to the heat dissipation requirements of different power modules without increasing the total inlet flow is a technical problem that technicians in this field need to solve urgently. Utility Model Content

[0005] The present application provides a hybrid powertrain and a liquid-cooled radiator. By setting a valve in the main channel, the flow in different branch channels is reasonably allocated according to the heat dissipation requirements of the power module without increasing the total coolant flow at the liquid inlet, thereby comprehensively improving the heat dissipation efficiency of the overall radiator and improving the flow capacity of the power module.

[0006] In a first aspect, a hybrid powertrain is provided. The hybrid powertrain includes a driving power module, a generating power module, a generator, a driving machine and a liquid cooling radiator. The driving power module is connected to the driving machine, and the generating power module is connected to the generator. The liquid cooling radiator includes an inlet main channel, a first branch channel, a second branch channel, an outlet main channel and a valve. The inlet main channel and the outlet main channel are arranged at intervals. The first branch channel and the second branch channel are respectively arranged between the inlet main channel and the outlet main channel, and are respectively interconnected with the inlet main channel and the outlet main channel. The driving power module is in contact with the first branch channel, and the generating power module is in contact with the second branch channel. The valve is arranged in the inlet main channel and between the inlet of the first branch channel and the inlet of the second branch channel. The valve is used to make the coolant flow in the first branch channel and the second branch channel different.

[0007] Based on the above technical solution, a valve is set in the main channel to adjust the flow of coolant in the branch channel. Without increasing the total coolant flow at the liquid inlet, the flow in different branch channels is reasonably allocated according to the heat dissipation requirements of the power module, thereby comprehensively improving the heat dissipation efficiency of the overall radiator and the flow capacity of the power module.

[0008] It should be understood that the inlet of the first branch flow channel includes the communication interface between the first branch flow channel and the main water inlet flow channel, and the inlet of the second branch flow channel includes the communication interface between the second branch flow channel and the main water inlet flow channel.

[0009] It should be understood that the driving power module is connected to the driving machine, including physical connection, and / or power connection, and / or communication connection, etc., and this application does not make any special limitation on this.

[0010] It should be understood that the power generation module is connected to the generator, including physical connection, and / or power connection, and / or communication connection, etc., and this application does not make any special limitation on this.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the valve includes a first port and a second port. The liquid inlet of the inlet main channel is located on one side of the first branch channel, and the second branch channel is located on the other side of the first branch channel. The coolant in the inlet main channel flows in from the first port and flows out from the second port, and the coolant flow rate flowing into the first port is greater than the coolant flow rate flowing out of the second port. The coolant flow rate in the first branch channel is greater than the coolant flow rate in the second branch channel.

[0012] Based on the above technical solution, the valve includes a two-way flow control valve, which is installed between the inlet of the first branch channel and the inlet of the second branch channel, and is used to adjust the coolant flow distributed to the second branch channel. When the coolant flow at the inlet of the main inlet channel remains unchanged, the coolant flow out of the second port is reduced by the valve, and the coolant flow allocated to the first branch channel will increase. Therefore, without increasing the coolant flow at the inlet of the main inlet channel, the flow in different branch channels is reasonably distributed according to the heat dissipation requirements of different power modules, so as to comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the valve includes a first port, a second port, and a third port. The liquid inlet of the inlet main channel is located on one side of the third port, and the coolant in the inlet main channel flows in from the third port and flows out from the first port and the second port. The coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port.

[0014] Based on the above technical solution, the valve includes a three-way flow control valve. The liquid inlet of the inlet main channel is located on one side of the third port and is connected to the third port. The valve is installed between the inlet of the first branch channel and the inlet of the second branch channel to adjust the coolant flow rate distributed to the first port and the second port. When the coolant flow rate at the liquid inlet remains unchanged, the coolant flow rate of each branch channel is redistributed by reasonably redistributing the flow rate of different ports according to the heat dissipation requirements of different power modules without increasing the total coolant flow rate. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0015] It should be understood that by adjusting the valve, the coolant flow rate out of the first port and the second port can be adjusted in any proportion, and the coolant flow rate out of the first port and the second port is different. The coolant flow rate out of the first port can be greater than the coolant flow rate out of the second port, or less than the coolant flow rate out of the second port. The coolant flow rate in the first branch channel can be greater than the coolant flow rate out of the second branch channel, or less than the coolant flow rate out of the second branch channel.

[0016] It should be understood that the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port, including three situations: the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port; the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the second port; the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port, and is also greater than the coolant flow rate flowing out of the second port.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the number of valves includes one or more.

[0018] Based on the above technical solution, multiple valves can be set in the main channel. The valves are set between two adjacent branch channels and are used to make the coolant flow in the two adjacent branch channels different. According to the heat dissipation requirements of different power modules, the flow of different ports is reasonably redistributed, thereby redistributing the coolant flow of each branch channel. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0019] It should be understood that one or more valves can be provided in the main channel to adjust the flow rate of the coolant in the first branch channel and the second branch channel. One or more valves can also be provided in the main channel to adjust the flow rate of the coolant in multiple adjacent branch channels.

[0020] In combination with the first aspect, in some implementations of the first aspect, a third branch flow channel and a fourth branch flow channel are further included, wherein the third branch flow channel, the first branch flow channel, the second branch flow channel, and the fourth branch flow channel are arranged in sequence.

[0021] Based on the above technical solution, the liquid-cooled radiator also includes a third branch channel and a fourth branch channel. The four branch channels are arranged in sequence, and the power module can be set between every two adjacent branch channels. The valve is installed between the first branch channel and the second branch channel, and is used to make the coolant flow in the two adjacent branch channels different. According to the heat dissipation requirements of different power modules, the coolant flow of each branch channel is redistributed by redistributing the flow of different ports reasonably. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0022] In combination with the first aspect, in certain implementations of the first aspect, the coolant flow rates in the third branch flow channel and the first branch flow channel are the same, and the coolant flow rates in the second branch flow channel and the fourth branch flow channel are the same.

[0023] Based on the above technical solution, the first branch channel and the third branch channel are used to set the driving power module, and the second branch channel and the fourth branch channel are used to set the power generation power module. A valve is set between the first branch channel and the second branch channel, and the valve is used to control the coolant flow through itself, and distribute coolant of different flow rates according to the heat dissipation requirements of different power modules. The coolant flow rates in the first branch channel and the third branch channel are the same, and the coolant flow rates in the second branch channel and the fourth branch channel are the same. Without increasing the total coolant flow rate, the heat dissipation efficiency of the entire radiator is comprehensively improved, and the flow capacity of the power module is improved.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the driving power module includes at least one driving power module, the driving power module is used to drive the power circuit to control the driving machine, and the driving power module is arranged between the first branch channel and the third branch channel.

[0025] Based on the above technical solution, since the heat dissipation demand of the driving power module is often greater than the heat dissipation demand of the power generation module, the driving power module is set between the first branch channel and the third branch channel, and more flow of coolant is allocated to the driving power module. The driving power module includes one or more driving power modules, and one or more power modules can be set between two adjacent branch channels, and heat is dissipated for one or more power modules. Without increasing the total flow of coolant, the heat dissipation efficiency of the overall radiator is comprehensively improved, and the flow capacity of the power module is improved.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the power generation module includes at least one power generation module, the power generation module is used to control the generator, and the power generation module is arranged between the second branch channel and the fourth branch channel.

[0027] Based on the above technical solution, since the heat dissipation demand of the power generation module is often smaller than that of the driving power module, the power generation module is set between the second branch channel and the fourth branch channel, and a relatively small flow of coolant is allocated to the power generation module. The power generation module includes one or more power generation modules, and one or more power modules can be set between two adjacent branch channels, and heat is dissipated for one or more power modules. Without increasing the total flow of coolant, the heat dissipation efficiency of the overall radiator is comprehensively improved, and the flow capacity of the power module is improved.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the valve is a sheet-like structure forming at least one through hole.

[0029] Based on the above technical solution, the valve includes a sheet structure forming at least one through hole, which is used to control the flow of coolant flowing to the second branch flow channel. By simplifying the structure of the valve, the function of flow distribution is realized at the same time. On the basis of improving the heat dissipation efficiency of the overall radiator and the flow capacity of the power module, the production cost can be further reduced and the commissioning work at the delivery site can be simplified.

[0030] In a second aspect, a liquid-cooled radiator is provided. The liquid-cooled radiator includes an inlet main channel, a first branch channel, a second branch channel, an outlet main channel and a valve. The inlet main channel is spaced apart from the outlet main channel, and the first branch channel and the second branch channel are respectively arranged between the inlet main channel and the outlet main channel, and are respectively interconnected with the inlet main channel and the outlet main channel. The valve is arranged in the inlet main channel and is located between the inlet of the first branch channel and the inlet of the second branch channel. The valve is used to make the coolant flow in the first branch channel and the second branch channel different.

[0031] Based on the above technical solution, a valve is set in the main channel to adjust the flow of coolant in the branch channel. Without increasing the total coolant flow at the liquid inlet, the flow in different branch channels is reasonably allocated according to the heat dissipation requirements of the power module, thereby comprehensively improving the heat dissipation efficiency of the overall radiator and the flow capacity of the power module.

[0032] It should be understood that the inlet of the first branch flow channel includes the communication interface between the first branch flow channel and the main water inlet flow channel, and the inlet of the second branch flow channel includes the communication interface between the second branch flow channel and the main water inlet flow channel.

[0033] In combination with the second aspect, in certain implementations of the second aspect, the valve includes a first port and a second port. The liquid inlet of the inlet main channel is located on one side of the first branch channel, and the second branch channel is located on the other side of the first branch channel. The coolant in the inlet main channel flows in from the first port and flows out from the second port, and the coolant flow rate flowing into the first port is greater than the coolant flow rate flowing out of the second port. The coolant flow rate in the first branch channel is greater than the coolant flow rate in the second branch channel.

[0034] Based on the above technical solution, the valve includes a two-way flow control valve, which is installed between the inlet of the first branch channel and the inlet of the second branch channel, and is used to adjust the coolant flow distributed to the second branch channel. When the coolant flow at the inlet of the main inlet channel remains unchanged, the coolant flow out of the second port is reduced by the valve, and the coolant flow allocated to the first branch channel will increase. Therefore, without increasing the coolant flow at the inlet of the main inlet channel, the flow in different branch channels is reasonably distributed according to the heat dissipation requirements of different power modules, so as to comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0035] In conjunction with the second aspect, in certain implementations of the second aspect, the valve includes a first port, a second port, and a third port. The liquid inlet of the inlet main channel is located on one side of the third port, and the coolant in the inlet main channel flows in from the third port and flows out from the first port and the second port. The coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port.

[0036] Based on the above technical solution, the valve includes a three-way flow control valve. The liquid inlet of the inlet main channel is located on one side of the third port and is connected to the third port. The valve is installed between the inlet of the first branch channel and the inlet of the second branch channel to adjust the coolant flow rate distributed to the first port and the second port. When the coolant flow rate at the liquid inlet remains unchanged, the coolant flow rate of each branch channel is redistributed by reasonably redistributing the flow rate of different ports according to the heat dissipation requirements of different power modules without increasing the total coolant flow rate. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0037] It should be understood that by adjusting the valve, the coolant flow rate out of the first port and the second port can be adjusted in any proportion, and the coolant flow rate out of the first port and the second port is different. The coolant flow rate out of the first port can be greater than the coolant flow rate out of the second port, or less than the coolant flow rate out of the second port. The coolant flow rate in the first branch channel can be greater than the coolant flow rate out of the second branch channel, or less than the coolant flow rate out of the second branch channel.

[0038] It should be understood that the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port, including three situations: the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port; the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the second port; the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port, and is also greater than the coolant flow rate flowing out of the second port.

[0039] In combination with the second aspect, in certain implementations of the second aspect, the number of valves includes one or more.

[0040] Based on the above technical solution, multiple valves can be set in the main channel. The valves are set between two adjacent branch channels and are used to make the coolant flow in the two adjacent branch channels different. According to the heat dissipation requirements of different power modules, the flow of different ports is reasonably redistributed, thereby redistributing the coolant flow of each branch channel. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0041] It should be understood that one or more valves can be provided in the main channel to adjust the flow rate of the coolant in the first branch channel and the second branch channel. One or more valves can also be provided in the main channel to adjust the flow rate of the coolant in multiple adjacent branch channels.

[0042] In combination with the second aspect, in some implementations of the second aspect, a third branch flow channel and a fourth branch flow channel are further included, wherein the third branch flow channel, the first branch flow channel, the second branch flow channel, and the fourth branch flow channel are arranged in sequence.

[0043] Based on the above technical solution, the liquid-cooled radiator also includes a third branch channel and a fourth branch channel. The four branch channels are arranged in sequence, and the power module can be set between every two adjacent branch channels. The valve is installed between the first branch channel and the second branch channel, and is used to make the coolant flow in the two adjacent branch channels different. According to the heat dissipation requirements of different power modules, the coolant flow of each branch channel is redistributed by redistributing the flow of different ports reasonably. This can comprehensively improve the heat dissipation efficiency of the overall radiator and improve the flow capacity of the power module.

[0044] In combination with the second aspect, in certain implementations of the second aspect, the coolant flow rates in the third branch flow channel and the first branch flow channel are the same, and the coolant flow rates in the second branch flow channel and the fourth branch flow channel are the same.

[0045] Based on the above technical solution, a power module is set between the first branch channel and the third branch channel, and another power module is set between the second branch channel and the fourth branch channel. A valve is set between the first branch channel and the second branch channel, and the valve is used to control the coolant flow through itself, and distribute coolant of different flow rates according to the heat dissipation requirements of different power modules. The coolant flow rates in the first branch channel and the third branch channel are the same, and the coolant flow rates in the second branch channel and the fourth branch channel are the same. Without increasing the total coolant flow rate, the heat dissipation efficiency of the entire radiator is comprehensively improved, and the flow capacity of the power module is improved.

[0046] In conjunction with the second aspect, in some implementations of the second aspect, a first power module is disposed between the third branch channel and the first branch channel, and a second power module is disposed between the second branch channel and the fourth branch channel. The first power module and the second power module have different heat dissipation requirements.

[0047] Based on the above technical solution, the first branch channel and the third branch channel are used to set the first power module, and the second branch channel and the fourth branch channel are used to set the second power module. A valve is set between the first branch channel and the second branch channel, and the valve is used to control the coolant flow through itself, and distribute coolant of different flow rates according to the heat dissipation requirements of different power modules. The coolant flow rates in the first branch channel and the third branch channel are the same, and the coolant flow rates in the second branch channel and the fourth branch channel are the same. Without increasing the total coolant flow rate, the heat dissipation efficiency of the entire radiator is comprehensively improved, and the flow capacity of the power module is improved.

[0048] In one implementation, the heat dissipation requirement of the first power module is greater than the heat dissipation requirement of the second power module. By adjusting the valve to control the coolant flow passing through itself, the coolant flow allocated to the first branch channel is greater than the coolant flow in the second branch channel.

[0049] In another implementation, the heat dissipation requirement of the first power module is smaller than that of the second power module, and the valve is adjusted to control the coolant flow passing through itself so that the coolant flow allocated to the first branch channel is smaller than the coolant flow in the second branch channel.

[0050] In combination with the second aspect, in certain implementations of the second aspect, the valve is a sheet-like structure forming at least one through hole.

[0051] Based on the above technical solution, the valve includes a sheet structure forming at least one through hole, which is used to control the flow of coolant flowing to the second branch flow channel. By simplifying the structure of the valve, the function of flow distribution is realized at the same time. On the basis of improving the heat dissipation efficiency of the overall radiator and the flow capacity of the power module, the production cost can be further reduced and the commissioning work at the delivery site can be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of a parallel multi-channel heat dissipation structure provided in an embodiment of the present application.

[0053] Figure 2 It is a structural schematic diagram of a hybrid powertrain provided in this application.

[0054] Figure 3 It is a structural schematic diagram of a heat dissipation device provided in this application.

[0055] Figure 4It is a structural schematic diagram of another heat dissipation device provided in the present application.

[0056] Figure 5 It is a structural schematic diagram of another heat dissipation device provided in the present application.

[0057] Figure 6 It is a schematic diagram of the allocation structure provided in this application. DETAILED DESCRIPTION

[0058] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0059] It should be noted that, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two, and "at least one" and "one or more" mean one, two or more. The singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0060] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0061] In the description of the embodiments of the present application, the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "vertical" and "horizontal" are defined relative to the directions or positions of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, rather than indicating or implying that the device or component referred to must have a specific direction, or be constructed and operated in a specific direction. They may change accordingly according to changes in the directions of the components placed in the drawings, and therefore cannot be understood as limitations on the present application.

[0062] In the embodiments of the present application, the same reference numerals are used to represent the same components or parts. In addition, the various parts in the drawings are not drawn to scale, and the sizes and dimensions of the parts shown in the drawings are only exemplary and should not be understood as limiting the present application.

[0063] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "connected", "configured" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a detachable fixation, or an integral connection, etc.; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two devices or the interaction relationship between two devices, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] It should be noted that when a device is referred to as being "fixed on" or "set on" or "configured on" another device, it may be directly on the other device or there may be a central device. When a device is considered to be "connected to" another device, it may be directly connected to the other device or there may be a central device at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0065] With the rapid development of the new energy vehicle industry, increasingly integrated power modules are used in the vehicle's power system. These power modules emit a large amount of heat when working, and require efficient heat dissipation measures to ensure their normal operation. A parallel multi-channel heat dissipation structure is usually used to dissipate heat for the power module.

[0066] Figure 1 It is a schematic diagram of a parallel multi-channel heat dissipation structure provided in an embodiment of the present application.

[0067] The heat dissipation structure generally has a water inlet main pipe and a water outlet main pipe, and a flow channel group is connected between the water inlet main pipe and the water outlet main pipe. The flow channels between the flow channel groups or between the flow channels in the flow channel groups are used to fix the power modules that need heat dissipation. The coolant enters the water inlet main pipe through the water inlet, then passes through the flow channel group connected to the main pipe, and finally flows out from the water outlet through the water outlet main pipe. The entire heat dissipation structure dissipates heat through the flow of coolant in the flow channel, thereby achieving the effect of heat dissipation for the power module. The flow rate of the coolant in the flow channel affects the heat carried away by the coolant, thereby affecting the heat dissipation effect of the power module fixed next to the flow channel.

[0068] Next, through Figure 1The heat dissipation structure of the present application is described as a specific implementation method, but it should be understood that this should not constitute any limitation on the protection scope of the present application.

[0069] Figure 1 The front view and side cross-sectional view of the heat dissipation structure are shown respectively. The heat dissipation structure includes a water inlet and a water outlet, and has 4 flow channels. Figure 1 In the structure shown, a power module that needs heat dissipation can be fixed between flow channel 1 and flow channel 2, and a power module that needs heat dissipation can also be fixed between flow channel 3 and flow channel 4. Flow channel 2 and flow channel 3 can be integrated in a flow channel plate.

[0070] After the coolant is injected from the water inlet, it will flow to the connected flow channels, and the coolant flow rates allocated to the four flow channels are almost the same. This means that the heat dissipation effect of the four flow channels is almost the same, and the heat dissipation effect that the power modules fixed between different flow channels can obtain is also almost the same. When the temperature of the power module fixed in the flow channel rises and more efficient heat dissipation is required, the heat dissipation effect can only be improved by increasing the flow rate of the water inlet.

[0071] Multiple power modules can be fixed in the flow channel, but during the operation of the vehicle's power system, different power modules generate different heat and emit different amounts of heat. Some power modules have higher power and generate more heat when in operation, requiring a larger coolant flow rate to achieve the heat dissipation effect; some power modules have lower power and generate less heat when in operation, so a smaller coolant flow rate can meet the heat dissipation needs. Figure 1 In the heat dissipation structure shown, the flow rates between the flow channels are the same, and the cooling effect of the power modules installed between the flow channels is equivalent. In order to meet the power modules with high heat dissipation requirements, it is often necessary to increase the inlet flow rate of the heat dissipation structure to improve the flow capacity of the overall heat dissipation structure. However, this method will result in a lower utilization rate of the flow rate and more waste of coolant.

[0072] Therefore, without increasing the coolant flow rate at the water inlet, how to more reasonably allocate different flow rates to different flow channels to achieve an improvement in the overall heat dissipation effect is the key technical problem to be solved in this application.

[0073] As a key component in the vehicle motor control system, the heat sink affects the heat dissipation effect and performance stability of the entire system to a certain extent. By optimizing the flow distribution between flow channels, the problem of coolant flow distribution in different flow channels in the heat sink can be improved. This means that in the motor control system, higher-power power modules can obtain more coolant flow, thereby achieving better heat dissipation effects. By optimizing the flow distribution of the coolant, the overall motor control system can fully utilize the heat dissipation capacity of the radiator, improve the heat dissipation efficiency and the performance of the overall system.

[0074] For example, in the field of new energy vehicles, efficient heat dissipation devices can effectively keep the temperature of power electronic components in the motor control system within an appropriate range, extend their service life, and improve the performance and safety of the entire vehicle. In addition, by optimizing the heat dissipation effect, it is also possible to reduce energy consumption in the electric vehicle system and improve energy utilization efficiency. By improving the heat dissipation effect of the heat dissipation device, it is possible to provide more efficient and stable power output for the development of new energy vehicles, improve the performance and reliability of the entire vehicle, and promote the further development and application of new energy vehicle technology.

[0075] Figure 2 It is a structural schematic diagram of a hybrid powertrain provided in this application.

[0076] The structure of the hybrid powertrain includes a driving power module, a power generation module, a generator, a driving machine and a liquid cooling radiator. Among them, the driving power module is connected to the driving machine, and the power generation module is connected to the generator. The liquid cooling radiator includes an inlet main channel, a first branch channel, a second branch channel, an outlet main channel and a valve. Specifically, the inlet main channel and the outlet main channel are arranged at intervals, and the first branch channel and the second branch channel are respectively arranged between the inlet main channel and the outlet main channel, and are respectively interconnected with the inlet main channel and the outlet main channel. The driving power module is in contact with the first branch channel, the power generation module is in contact with the second branch channel, and the valve is arranged in the inlet main channel and is located between the inlet of the first branch channel and the inlet of the second branch channel. The valve is used to make the coolant flow in the first branch channel and the second branch channel different.

[0077] The coolant flows from the inlet into the main channel, and then flows into each branch channel through the main channel. The dotted lines in the figure schematically show the direction of the water flow. The coolant flows from the inlet main channel, passes through each branch channel, and then flows out through the outlet of the outlet main channel.

[0078] In a specific implementation, the valve includes a first port and a second port. The liquid inlet of the inlet main channel is located on one side of the first branch channel, and the second branch channel is located on the other side of the first branch channel. The coolant in the inlet main channel flows in from the first port and flows out from the second port, and the coolant flow rate flowing into the first port is greater than the coolant flow rate flowing out of the second port. The coolant flow rate in the first branch channel is greater than the coolant flow rate in the second branch channel. Since the heat dissipation requirements of the driving power module and the power generation power module are different, by adjusting the valve, the coolant flow rates in the first branch channel and the second branch channel are redistributed according to the heat dissipation requirements. Under the premise of not increasing the total flow rate of the water inlet, the heat dissipation efficiency in each branch channel is reasonably allocated, thereby improving the flow capacity of the power module.

[0079] In another specific implementation, the valve includes a first port, a second port and a third port. The liquid inlet of the inlet main channel is located on one side of the third port. The coolant in the inlet main channel flows in from the third port and flows out from the first port and the second port. The coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port. When the heat dissipation requirements of the driving power module and the power generation power module are different, the coolant flow rate output from the first port and the second port is redistributed according to different heat dissipation requirements by adjusting the valve, thereby adjusting the coolant flow rate of each branch channel. In order to meet the different heat dissipation requirements of the power module, the heat dissipation efficiency in each branch channel is reasonably allocated without increasing the total flow rate of the water inlet, thereby improving the flow capacity of the power module.

[0080] In another specific implementation, in the structure of the integral liquid-cooled radiator, the number of valves includes one or more.

[0081] In another specific implementation, the liquid cooling radiator further includes a third branch flow channel and a fourth branch flow channel, wherein the third branch flow channel, the first branch flow channel, the second branch flow channel, and the fourth branch flow channel are arranged in sequence.

[0082] In another specific implementation, the coolant flow rates in the third branch flow channel and the first branch flow channel are the same, and the coolant flow rates in the second branch flow channel and the fourth branch flow channel are the same.

[0083] In another specific implementation, the driving power module includes at least one driving power module. The driving power module is used to drive the power circuit to control the driving machine. The driving power module is arranged between the first branch flow channel and the third branch flow channel.

[0084] In another specific implementation, the power generation module includes at least one power generation module. The power generation module is used to control the generator. The power generation module is arranged between the second branch flow channel and the fourth branch flow channel.

[0085] In another specific implementation, the valve is a sheet-like structure forming at least one through hole.

[0086] Figure 3 It is a structural schematic diagram of a heat dissipation device provided in this application.

[0087] The heat dissipation device includes a main water inlet channel and a main water outlet channel, and has four heat dissipation channels, and the four heat dissipation channels are connected to the four water outlets of the main water inlet channel in sequence. The coolant enters the main water inlet channel from the water inlet, flows into each heat dissipation channel through each outlet of the main channel, and the water flow direction is schematically shown by dotted lines in the figure. Power module 1 is fixed between heat dissipation channel 1 and heat dissipation channel 2, and power module 2 is fixed between heat dissipation channel 3 and heat dissipation channel 4. The coolant flows into the main water inlet channel, passes through each heat dissipation channel, and flows out through the outlet of the main water outlet channel.

[0088] It should be understood that the heat dissipation device in the embodiment is a specific implementation of the liquid-cooled radiator in the above implementation, and does not constitute any limitation on the protection scope of the present application.

[0089] It should be understood that a power module can be fixed between two adjacent heat dissipation channels, and this application does not impose any special limitation on this.

[0090] It should be understood that in some embodiments, the flow control valve is also referred to as a valve, a control valve, a flow valve, etc., which is only a reference to the name and should not constitute any limitation on the scope of protection of the present application.

[0091] It should be understood that in some embodiments, the power module is also referred to as a power module, a power unit, etc., which is only a name reference and should not constitute any limitation on the scope of protection of the present application.

[0092] It should be understood that in some embodiments, the main water inlet channel is also referred to as the entrance main channel, the water inlet main channel, etc., and the water inlet is also referred to as the liquid inlet, the water inlet, etc. These are merely references to names and should not constitute any limitation on the scope of protection of this application.

[0093] It should be understood that in some embodiments, the main water outlet channel is also referred to as the outlet main channel, the main water outlet channel, etc., and the water outlet is also referred to as the liquid outlet, etc., which are merely references to names and should not constitute any limitation on the scope of protection of this application.

[0094] It should also be understood that the water inlet, water inlet, water outlet, etc. are merely names, and do not limit the liquid in the flow channel, including coolant, water, antifreeze, antifreeze oil, etc., and this application does not make any special limitations here.

[0095] It should be understood that the shapes of the heat dissipation channels and the heat dissipation modules are only schematically drawn in the accompanying drawings, and the present application does not make any special limitations on the actual shapes, size ratios, etc.

[0096] It should be understood that when the flow control valve is not installed, the coolant flow between the heat dissipation channels connected to the various outlets of the main channel is evenly divided, that is, the coolant flow divided in heat dissipation channel 1, heat dissipation channel 2, heat dissipation channel 3, and heat dissipation channel 4 is the same.

[0097] It should be understood that the heat dissipation channel is a specific manifestation of the branch channel in the above implementation method, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0098] It should be understood that the heat dissipation channel 2 is a specific manifestation of the first branch channel in the above implementation, and should not constitute any limitation on the protection scope of the present application, and the present application does not make any special limitation on this.

[0099] It should be understood that the heat dissipation channel 3 is a specific manifestation of the second branch channel in the above implementation, and should not constitute any limitation on the protection scope of the present application, and the present application does not make any special limitation on this.

[0100] It should be understood that the flow control valve is a specific form of the valve in the above-mentioned implementation method, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0101] It should be understood that the power module 1 is a specific form of driving the power module in the above implementation, and should not constitute any limitation on the protection scope of the present application, and the present application does not make any special limitation on this.

[0102] It should be understood that the power module 2 is a specific manifestation of the power generation module in the above implementation, and should not constitute any limitation on the protection scope of the present application, and the present application does not make any special limitation on this.

[0103] In one implementation, a flow control valve is provided between the heat dissipation channel 2 and the heat dissipation channel 3, and the flow control valve is used to control the flow rate of water passing through the valve.

[0104] In one implementation, the flow control valve includes a two-way flow control valve, and the two-way flow control valve includes two ports, and the two ports are respectively connected to two adjacent heat dissipation channels.

[0105] In a specific implementation, the two-way flow control valve is installed between the heat dissipation channel 2 and the heat dissipation channel 3. The two-way flow control valve includes two ports, port 1 is used to communicate with the heat dissipation channel 2, and port 2 is used to communicate with the heat dissipation channel 3.

[0106] It should be understood that port 1 is a specific manifestation of the first port in the above implementation, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0107] It should be understood that port 2 is a specific manifestation of the second port in the above implementation, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0108] It can also be understood that, along the water flow direction of the main water inlet channel, the two-way flow control valve is used to control the flow rate of the coolant flowing into its own valve and then outflowing.

[0109] It can also be understood that port 1 is the input end of the flow control valve, which is used to communicate with the heat dissipation channel 2 and the main channel at the same time; port 2 is the output end of the flow control valve, which is used to communicate with the heat dissipation channel 3, and the flow control valve is used to adjust the output flow of the output end (port 2) by adjusting its own opening. That is, the flow control valve is used to control the flow of the coolant in the main channel into the heat dissipation channel 3. The flow of the output port is less than or equal to the flow of the input port.

[0110] The flow control valve is used to adjust the opening of its own control valve to adjust the flow of coolant passing through according to the heat dissipation requirements of power module 1 and power module 2, thereby realizing flow distribution between different heat dissipation channels and meeting the heat dissipation requirements of power modules under different powers.

[0111] It should be understood that the coolant flow rate of the two-way control valve output port 2 is less than or equal to the coolant flow rate of the input port 1. It can also be understood that the coolant flow rate in the heat dissipation channel 3 is less than or equal to the coolant flow rate in the heat dissipation channel 2.

[0112] It should be understood that when the flow control valve is fully turned on, the flow rates in the heat dissipation channel 2 and the heat dissipation channel 3 are the same, and the flow rates among the four heat dissipation channels are the same.

[0113] It should be understood that when the two-way flow control valve is not fully conducted, the coolant flow in the heat dissipation channel 2 is less than the flow in the heat dissipation channel 3, the flow in the heat dissipation channel 1 is the same as the flow in the heat dissipation channel 2, and the flow in the heat dissipation channel 4 is the same as the flow in the heat dissipation channel 3. The power module 1 is fixed between the heat dissipation channel 1 and the heat dissipation channel 2, and the heat dissipation channel 1 and the heat dissipation channel 2 are respectively for the two surfaces of the power module 1 to dissipate heat; the power module 2 is fixed between the heat dissipation channel 3 and the heat dissipation channel 4, and the heat dissipation channel 3 and the heat dissipation channel 4 are respectively for the two surfaces of the power module 2 to dissipate heat. The conduction degree of the flow control valve can be adjusted according to the working temperature zone, heating condition, heat dissipation condition, etc. of the power module 1 and the power module 2.

[0114] In a specific implementation, when the heat dissipation demand of power module 1 is greater than that of power module 2, the flow control valve is controlled to reduce the flow into heat dissipation channel 3 and heat dissipation channel 4 by controlling the opening of the flow control valve, so that the flow of heat dissipation channel 1 and heat dissipation channel 2 is greater than the flow of heat dissipation channel 3 and heat dissipation channel 4, thereby more reasonably utilizing the coolant flow resources and quickly and efficiently dissipating the heat for the entire power module.

[0115] It should be understood that the opening of the flow control valve can also be proportionally controlled according to the quantitative relationship between the heat dissipation requirements of power module 1 and power module 2, so as to proportionally control the coolant flow between heat dissipation channel 2 and heat dissipation channel 3. In addition, an intelligent control system can be added to monitor the heat dissipation requirements in real time according to the working temperature rise of the power module, so as to control the coolant flow allocated to the heat dissipation channels where different power modules are located by adjusting the opening of the flow control valve according to the relative heat dissipation requirements between the power modules. The entire heat dissipation device has a more efficient heat dissipation effect, and the heat exchange efficiency of the heat dissipation device is improved as a whole without increasing the coolant flow at the water inlet, and the heat dissipation resources are reasonably used. When there are more power modules and heat dissipation channels in the entire system, the flow of the heat dissipation channel where each power module is located can be more accurately adjusted by increasing the number of flow control valves. The above implementation methods should not be considered to exceed the protection scope of this application.

[0116] exist Figure 3 In the implementation shown, the two-way flow control valve can only control the coolant flow through itself in one direction, and the coolant flow through it can be reduced by adjusting its opening. Figure 4 Another structure of a flow control valve is described below.

[0117] Figure 4 It is a structural schematic diagram of another heat dissipation device provided in the present application.

[0118] The heat dissipation device includes a main water inlet channel and a main water outlet channel, and has four heat dissipation channels, and the four heat dissipation channels are connected to the four water outlets of the main water inlet channel in sequence. The coolant enters the main water inlet channel from the water inlet, flows into each heat dissipation channel through each outlet of the main channel, and the water flow direction is schematically shown by dotted lines in the figure. Power module 1 is fixed between heat dissipation channel 1 and heat dissipation channel 2, and power module 2 is fixed between heat dissipation channel 3 and heat dissipation channel 4. The coolant flows into the main water inlet channel, passes through each heat dissipation channel, and flows out through the outlet of the main water outlet channel.

[0119] The heat sink and Figure 3 The difference of the heat dissipation device shown is that the flow control valve comprises a three-way flow control valve. The three-way flow control valve comprises three ports, one port is connected to the water inlet, and the other two ports are respectively connected to two adjacent heat dissipation channels.

[0120] In a specific implementation, the three-way flow control valve is installed between the heat dissipation flow channel 2 and the heat dissipation flow channel 3. The three-way flow control valve includes three ports, port 1 is used to communicate with the water inlet, port 2 is used to communicate with the heat dissipation flow channel 2, and port 3 is used to communicate with the heat dissipation flow channel 3. The three-way flow control valve is used to control the flow of coolant flowing out through ports 2 and 3 after flowing into the valve through port 1.

[0121] It should be understood that port 1 is a specific manifestation of the third port in the above implementation, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0122] It should be understood that port 2 is a specific manifestation of the first port in the above implementation, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0123] It should be understood that port 3 is a specific manifestation of the second port in the above implementation, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0124] It should be understood that the flow control valve is a specific form of the valve in the above-mentioned implementation method, and should not constitute any limitation on the protection scope of the present application. The present application does not make any special limitation on this.

[0125] It can also be understood that port 1 is the input port of the flow control valve, which is used to communicate with the main pipeline; port 2 is the output port of the flow control valve, which is used to communicate with the heat dissipation channel 2; port 3 is another output port of the flow control valve, which is used to communicate with the heat dissipation channel 3. The flow control valve adjusts the output flow of each output port by adjusting the opening of each output port. That is, the flow control valve is used to control the flow of the coolant in the main channel into the heat dissipation channel 2 and the heat dissipation channel 3. The sum of the flow of all output ports is less than or equal to the flow of the input port.

[0126] It should be understood that the arrangement of the flow channels, the connection between the heat dissipation flow channels and the main flow channels, the shape of the flow control valve, etc. in the drawings of this application are schematic and do not constitute any limitation on the scope of protection of this application. The arrangement of the flow channels and the connection between them can be designed and arranged according to the actual situation according to the shape of the power module, heat dissipation requirements, etc., and different arrangements and connection methods should not be considered to exceed the scope of protection of this application.

[0127] The flow control valve is used to adjust the flow of the coolant at the output port according to the heat dissipation requirements of the power module 1 and the power module 2 by adjusting the opening of its own port 2 and port 3, so as to achieve the flow distribution between different heat dissipation channels, thereby meeting the heat dissipation requirements of the power modules under different powers. The larger the opening of the port, the more the coolant flow through the port, and the more the coolant flow allocated to the heat dissipation channel connected to the port. When the opening of the port is adjusted to the maximum, that is, the port is in a fully open state, the coolant flow through the port is not restricted. The smaller the opening of the port, the less the coolant flow through the port, and the less the coolant flow allocated to the heat dissipation channel connected to the port. When the opening of the port is adjusted to the minimum, that is, the port is in a closed state, no coolant passes through the port, and there is no coolant in the heat dissipation channel connected to the port.

[0128] It should be understood that the three-way flow control valve can achieve arbitrary proportional distribution of the flow of the two output ports, thereby meeting the flow capacity requirements of the module under different powers.

[0129] It should be understood that the coolant flow rates of the output ports 2 and 3 of the three-way flow control valve are both less than or equal to the coolant flow rate of the input port 1. It can also be understood that the coolant flow rates in the heat dissipation channels 2 and 3 are both less than or equal to the coolant flow rate of the water inlet.

[0130] It should be understood that when the flow control valve is fully turned on, that is, when port 2 and port 3 are in a fully open state, the coolant flow rates allocated to heat dissipation channel 2 and heat dissipation channel 3 are the same, and the flow rates allocated among the four heat dissipation channels are the same.

[0131] It should be understood that when the three-way flow control valve is not fully turned on, the coolant flow in the heat dissipation channel 2 and the heat dissipation channel 3 is less than the coolant flow at the water inlet, and the flow in the heat dissipation channel 2 and the heat dissipation channel 3 depends on the opening of the three-way flow valve port 2 and port 3. When the opening of port 2 is larger than that of port 3, the coolant flow in the heat dissipation channel 2 is greater than the coolant flow in the heat dissipation channel 3; when the opening of port 2 is smaller than that of port 3, the coolant flow in the heat dissipation channel 2 is less than the coolant flow in the heat dissipation channel 3.

[0132] In a specific implementation, the power module 1 is fixed between the heat dissipation channel 1 and the heat dissipation channel 2, and the heat dissipation channel 1 and the heat dissipation channel 2 are respectively used to dissipate heat from two surfaces of the power module 1; the power module 2 is fixed between the heat dissipation channel 3 and the heat dissipation channel 4, and the heat dissipation channel 3 and the heat dissipation channel 4 are respectively used to dissipate heat from two surfaces of the power module 2. The conductance of the flow control valve can be adjusted according to the working temperature zone, heating condition, heat dissipation condition, etc. of the power module 1 and the power module 2.

[0133] When the heat dissipation demand of power module 1 is greater than that of power module 2, the opening of port 2 and port 3 of the flow control valve is adjusted to make the opening of port 2 greater than that of port 3, so that heat dissipation channel 2 and heat dissipation channel 3 can get more coolant flow. Among them, the coolant flow rates of heat dissipation channel 1 and heat dissipation channel 2 are the same, and the coolant flow rates of heat dissipation channel 3 and heat dissipation channel 4 are the same, so that more heat is taken away from power module 1, and the coolant flow resources are used more reasonably as a whole, so as to quickly and efficiently dissipate heat for the entire power module.

[0134] When the heat dissipation demand of power module 1 is less than that of power module 2, the opening of port 2 and port 3 of the flow control valve is adjusted to make the opening of port 2 smaller than that of port 3, so that heat dissipation channel 2 is allocated less coolant flow than heat dissipation channel 3. Among them, the coolant flow allocated to heat dissipation channel 1 and heat dissipation channel 2 is the same, and the coolant flow allocated to heat dissipation channel 3 and heat dissipation channel 4 is the same, so that more heat is taken away from power module 2, and the coolant flow resources are used more reasonably as a whole, and the overall power module is cooled quickly and efficiently.

[0135] It should be understood that the opening of the flow control valve can also be proportionally controlled according to the quantitative relationship between the heat dissipation requirements of power module 1 and power module 2, so as to proportionally control the coolant flow between heat dissipation channel 2 and heat dissipation channel 3. In addition, an intelligent control system can be added to monitor the heat dissipation requirements in real time according to the working temperature rise of the power module, so as to control the coolant flow allocated to the heat dissipation channels where different power modules are located by adjusting the opening of the flow control valve according to the relative heat dissipation requirements between the power modules. The entire heat dissipation device has a more efficient heat dissipation effect, and the heat exchange efficiency of the heat dissipation device is improved as a whole without increasing the coolant flow at the water inlet, and the heat dissipation resources are reasonably used. When there are more power modules and heat dissipation channels in the entire system, the flow of the heat dissipation channel where each power module is located can be more accurately adjusted by increasing the number of flow control valves. The above implementation methods should not be considered to exceed the scope of protection of this application.

[0136] exist Figure 4 In the implementation shown, the three-way flow control valve can adjust the coolant flow of the heat dissipation channels connected to each output port by controlling the opening of the output port.

[0137] It should be understood that in other implementations, the number of power modules for heat dissipation can be increased according to actual applications, and more heat dissipation channels can be added to dissipate heat for the power modules. It is also possible to select a multi-way flow control valve according to the actual distribution of the heat dissipation channels, and control the coolant flow of the connected heat dissipation channels by adjusting the opening of the output port.

[0138] This application explains a two-way flow control valve and a three-way flow control valve through the accompanying drawings. In actual use, a four-way flow control valve, a five-way flow control valve and other multi-way flow control valves can also be used. One input port of the multi-way flow control valve is connected to the water inlet, and the remaining output ports are respectively connected to the heat dissipation flow channels to adjust the coolant flow rate distributed by the connected heat dissipation flow channels. The structure and implementation method of the above-mentioned multi-way flow control valve should not be considered to exceed the protection scope of this application.

[0139] In a specific implementation, the relative heat dissipation requirements of the power modules during operation are fixed, and the relative heat dissipation requirements of the power modules will not change during operation, and there is no need to adjust the coolant flow through the flow control valve. In order to reduce production costs, the flow control valve can be simplified to a distribution structure, and the coolant flow is directly distributed to each power module on demand, so as to maximize the heat dissipation efficiency of the overall heat dissipation structure. Figure 5 Describes the use of allocation structures.

[0140] Figure 5 It is a structural schematic diagram of another heat dissipation device provided in the present application.

[0141] The heat dissipation device includes a main water inlet channel and a main water outlet channel, and has four heat dissipation channels, and the four heat dissipation channels are connected to the four water outlets of the main water inlet channel in sequence. The coolant enters the main water inlet channel from the water inlet, flows into each heat dissipation channel through each outlet of the main channel, and the water flow direction is schematically shown by dotted lines in the figure. Power module 1 is fixed between heat dissipation channel 1 and heat dissipation channel 2, and power module 2 is fixed between heat dissipation channel 3 and heat dissipation channel 4. The coolant flows into the main water inlet channel, passes through each heat dissipation channel, and flows out through the outlet of the main water outlet channel.

[0142] The difference between this heat dissipation device and the aforementioned heat dissipation device is that a flow distribution structure is provided between the heat dissipation channel 2 and the heat dissipation channel 3, and the distribution structure is used to control the flow rate of water passing through the structure.

[0143] It can also be understood that, along the water flow direction of the main water inlet channel, the distribution structure is used to control the flow rate of the coolant flowing into itself and then out.

[0144] It should be understood that the flow control valve is a specific manifestation of the first valve and / or the second valve in the above implementation, and should not constitute any limitation on the protection scope of the present application, and the present application does not make any special limitation on this.

[0145] The distribution structure includes a sheet structure forming at least one through hole. The coolant flowing into the water inlet flows out through the through hole in the distribution structure, and the coolant flow rate that can flow out through the distribution structure is related to the area of ​​the through hole of the distribution structure. When the cross-sectional area of ​​the through hole is larger, the coolant flow rate passing through is more, that is, the coolant flow rate divided by the heat dissipation channel 3 and the heat dissipation channel 4 is larger. When the cross-sectional area of ​​the through hole is smaller, the coolant flow rate passing through is less, that is, the coolant flow rate divided by the heat dissipation channel 3 and the heat dissipation channel 4 is smaller.

[0146] It should be understood that when the distribution structure is not installed, the coolant flow is evenly divided by each channel, that is, the coolant flow divided by the four heat dissipation channels is the same. When the distribution structure is added, the coolant flow through the distribution structure will be reduced, that is, the coolant flow divided by heat dissipation channel 3 and heat dissipation channel 4 will be reduced, and the coolant flow divided by heat dissipation channel 1 and heat dissipation channel 2 will be increased without increasing the total coolant flow at the water inlet.

[0147] Figure 6 It is a schematic diagram of the allocation structure provided in this application.

[0148] The distribution structure comprises a sheet-like structure which is installed on the cross section of the main water inlet channel.

[0149] Combination Figure 5 In the structure of the heat dissipation device shown, the coolant flows into the heat dissipation channel 3 and the heat dissipation channel 4 through the through holes on the sheet structure. The flow in the heat dissipation channel 3 and the heat dissipation channel 4 is evenly divided. When the cross-sectional area of ​​the through hole is larger, the heat dissipation channel 3 and the heat dissipation channel 4 share more coolant flow; the smaller the cross-sectional area of ​​the through hole, the less coolant flow is shared by the heat dissipation channel 3 and the heat dissipation channel 4. The flow shared by the heat dissipation channel 3 and the heat dissipation channel 4 is less than or equal to the coolant flow shared by the heat dissipation channel 1 and the heat dissipation channel 2.

[0150] It should be understood that Figure 6 Only two possible allocation structures are schematically drawn as examples, which does not constitute any limitation on the protection scope of the present application.

[0151] It should be understood that the flow rate of the coolant that can be divided into the heat dissipation channel 3 and the heat dissipation channel 4 is related to the sum of the cross-sectional areas of all the through holes of the distribution structure. The distribution structure can control the flow rate divided into the heat dissipation channel through the cross-sectional area of ​​a through hole, or through the sum of the cross-sectional areas of multiple through holes. The present application does not specifically limit the number of through holes. For similar reasons, the present application does not specifically limit the shape of the cross section of the through hole, including but not limited to circular, square, triangular, etc.

[0152] In a specific implementation, the heat dissipation requirements between power module 1 and power module 2 are fixed and in a certain ratio. The cross-sectional area of ​​the through hole of the distribution structure is adjusted according to the heat dissipation requirements of this ratio, and the existing coolant flow can be more reasonably distributed without increasing the total coolant flow of the water inlet, so as to achieve high-efficiency heat dissipation of the overall heat dissipation device. In actual quantitative production applications, the cost of manually adjusting the flow control valve can be reduced through the fixed structure distribution structure sheet, which reduces production costs and improves production efficiency.

[0153] It should be understood that on the basis of the specific implementation of the present application, more power modules and heat dissipation channels can be added, and a reasonable coolant flow rate can be allocated to the heat dissipation channel according to the heat dissipation requirements of the power module. Specifically, the distribution of the coolant flow rate can be achieved by setting a flow control valve and / or a distribution structure in the main channel. In a specific implementation, multiple two-way flow control valves, and / or three-way flow valves, and / or distribution structures with different through-hole shapes can be set in the main channel to achieve the distribution of the coolant flow rate of the heat dissipation channel. This application does not make special restrictions on this, and the combined use of various flow control valves and distribution structures should not be considered to exceed the scope of protection of this application.

[0154] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0155] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0156] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0157] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0158] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hybrid powertrain, characterized in that: The hybrid powertrain includes: a driving power module, a power generation module, a generator, a driving machine and a liquid cooling radiator; The driving power module is connected to the driving machine, and the generating power module is connected to the generator; The liquid-cooled radiator includes: an inlet main channel, a first branch channel, a second branch channel, an outlet main channel and a valve. The inlet main channel is spaced apart from the outlet main channel. The first branch channel and the second branch channel are respectively arranged between the inlet main channel and the outlet main channel and are respectively interconnected with the inlet main channel and the outlet main channel. The driving power module is in contact with the first branch channel, and the power generation power module is in contact with the second branch channel. The valve is arranged in the inlet main channel and is located between the inlet of the first branch channel and the inlet of the second branch channel. The valve is used to make the coolant flow rates in the first branch channel and the second branch channel different.

2. The hybrid powertrain according to claim 1, characterized in that: The valve comprises a first port and a second port, the liquid inlet of the inlet main channel is located on one side of the first branch channel, and the second branch channel is located on the other side of the first branch channel; The coolant in the inlet main flow channel flows in from the first port and flows out from the second port, and the flow rate of the coolant flowing in from the first port is greater than the flow rate of the coolant flowing out from the second port; The coolant flow rate in the first branch flow channel is greater than the coolant flow rate in the second branch flow channel.

3. The hybrid powertrain according to claim 1, characterized in that: The valve comprises a first port, a second port and a third port, and the liquid inlet of the inlet main channel is located at one side of the third port; The coolant in the inlet main channel flows in from the third port and flows out from the first port and the second port, and the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port.

4. The hybrid powertrain according to any one of claims 1 to 3, characterized in that: The number of the valves includes one or more.

5. The hybrid powertrain according to any one of claims 1 to 3, characterized in that: It also includes a third branch flow channel and a fourth branch flow channel, wherein The third branch flow channel, the first branch flow channel, the second branch flow channel, and the fourth branch flow channel are arranged in sequence.

6. The hybrid powertrain according to claim 5, characterized in that: The coolant flow rates in the third branch flow channel and the first branch flow channel are the same, and the coolant flow rates in the second branch flow channel and the fourth branch flow channel are the same.

7. The hybrid powertrain according to claim 5, characterized in that: The driving power module includes at least one driving power module, and the driving power module is used to drive the power circuit to control the driving machine. The driving power module is arranged between the first branch channel and the third branch channel.

8. The hybrid powertrain according to claim 5, characterized in that: The power generation module includes at least one power generation module, which is used to control the generator and is arranged between the second branch flow channel and the fourth branch flow channel.

9. The hybrid powertrain according to any one of claims 1 to 3, characterized in that: The valve is a sheet-like structure with at least one through hole formed therein.

10. A liquid cooling radiator, characterized in that: The liquid-cooled radiator includes: an inlet main channel, a first branch channel, a second branch channel, an outlet main channel and a valve. The inlet main channel is spaced apart from the outlet main channel. The first branch channel and the second branch channel are respectively arranged between the inlet main channel and the outlet main channel, and are respectively interconnected with the inlet main channel and the outlet main channel. The valve is arranged in the inlet main channel and is located between the inlet of the first branch channel and the inlet of the second branch channel. The valve is used to make the coolant flow rates in the first branch channel and the second branch channel different.

11. The liquid cooling radiator according to claim 10, characterized in that: The valve comprises a first port and a second port, the liquid inlet of the inlet main channel is located on one side of the first branch channel, and the second branch channel is located on the other side of the first branch channel; The coolant in the inlet main flow channel flows in from the first port and flows out from the second port, and the flow rate of the coolant flowing in from the first port is greater than the flow rate of the coolant flowing out from the second port; The coolant flow rate in the first branch flow channel is greater than the coolant flow rate in the second branch flow channel.

12. The liquid cooling radiator according to claim 10, characterized in that: The valve comprises a first port, a second port and a third port, and the liquid inlet of the inlet main channel is located at one side of the third port; The coolant in the inlet main channel flows in from the third port and flows out from the first port and the second port, and the coolant flow rate flowing into the third port is greater than the coolant flow rate flowing out of the first port and / or the second port.

13. The liquid cooling radiator according to any one of claims 10 to 12, characterized in that: The number of the valves includes one or more.

14. The liquid cooling radiator according to any one of claims 10 to 12, characterized in that: It also includes a third branch flow channel and a fourth branch flow channel, wherein The third branch flow channel, the first branch flow channel, the second branch flow channel, and the fourth branch flow channel are arranged in sequence.

15. The liquid cooling radiator according to claim 14, characterized in that: The coolant flow rates in the third branch flow channel and the first branch flow channel are the same, and the coolant flow rates in the second branch flow channel and the fourth branch flow channel are the same.

16. The liquid cooling radiator according to claim 14, characterized in that: A first power module is arranged between the third branch channel and the first branch channel, and a second power module is arranged between the second branch channel and the fourth branch channel. The first power module and the second power module have different heat dissipation requirements.

17. The liquid cooling radiator according to any one of claims 10 to 12, characterized in that: The valve is a sheet-like structure with at least one through hole formed therein.

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