Cooling system of electric drive system in vehicle and method thereof, processor and electronic equipment

Abstract

The invention discloses a cooling system and method of an electric drive system in a vehicle, a processor and an electronic device, the system comprises a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device, the heat dissipation device is connected with the front electric drive system, the rear electric drive system and the non-electric drive device, and the heat dissipation device is connected with the front electric drive system, the rear electric drive system and the non-electric drive device. The cooling system is used for outputting cooling liquid of a first flow to the front electric drive system and the rear electric drive system and outputting cooling liquid of a second flow to the non-electric drive equipment, and the first flow is different from the second flow; the front electric drive system is used for executing cooling operation through the cooling liquid of the first flow and the cooling liquid of the second flow; and the rear electric drive system is used for executing cooling operation through the first flow of cooling liquid. The technical problem that the cooling speed of the electric drive system in the vehicle is low is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a cooling system of an electric drive system in a vehicle and a method thereof, a processor and an electronic device. BACKGROUND

[0002] At present, with the rapid development of new energy vehicles, the heat dissipation demand of the cooling system of the vehicle is increasingly complex. In the related technology, the cooling system mainly adopts a liquid cooling scheme driven by an electric water pump to provide cooling function for components with large heat dissipation demand.

[0003] However, with the integration of electronic components such as intelligent driving controllers and vehicle controllers, the heat dissipation demand of the electric drive system in the vehicle has exceeded the capacity range of the existing cooling system, thereby causing the technical problem of low cooling speed of the electric drive system in the vehicle.

[0004] At present, no effective solution has been proposed for the above technical problem of low cooling speed of the electric drive system in the vehicle. SUMMARY

[0005] The embodiments of the present application provide a cooling system of an electric drive system in a vehicle and a method thereof, a processor and an electronic device to at least solve the technical problem of low cooling speed of the electric drive system in the vehicle.

[0006] According to an aspect of the embodiments of the present application, a cooling system of an electric drive system in a vehicle is provided, the system comprising: a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device, the heat dissipation device being connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively, wherein the heat dissipation device is configured to output a first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output a second flow of cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; the front electric drive system is configured to perform a cooling operation through the first flow of cooling liquid and the second flow of cooling liquid; and the rear electric drive system is configured to perform a cooling operation through the first flow of cooling liquid.

[0007] Optionally, the system further comprises: a venturi, the venturi comprising: a main inlet, a branch outlet, a branch inlet and a main outlet, the venturi being connected with the heat dissipation device, the front electric drive system and the non-electric drive device respectively, wherein the heat dissipation device is configured to output the second flow of cooling liquid to the venturi; the venturi is configured to output the second flow of cooling liquid from the main inlet to the branch outlet, and output the second flow of cooling liquid from the branch outlet to the non-electric drive device; the non-electric drive device is configured to output the second flow of cooling liquid from the branch inlet to the venturi; or the venturi is configured to output the second flow of cooling liquid from the main outlet to the front electric drive system.

[0008] Optionally, the heat dissipation device is connected with the venturi and the front electric drive system in series, and the venturi is connected with the non-electric drive device in parallel.

[0009] Optionally, the system further comprises a water pump connected with the heat dissipation device, the venturi and the rear electric drive system, wherein the heat dissipation device is configured to output the first flow of cooling liquid and the second flow of cooling liquid to the water pump; and the water pump is configured to drive the first flow of cooling liquid and the second flow of cooling liquid to the venturi, and drive the first flow of cooling liquid to the rear electric drive system.

[0010] Optionally, the heat dissipation device is connected with the venturi, the front electric drive system and the rear electric drive system in parallel, the venturi is connected with the non-electric drive device in parallel, and the venturi is connected with the front electric drive system in series.

[0011] Optionally, the first cooling liquid demand information of the front electric drive system is the same as the second cooling liquid demand information of the rear electric drive system, wherein the first cooling liquid demand information is used to indicate the flow of cooling liquid required by the front electric drive system to perform the cooling operation, and the second cooling liquid demand information is used to indicate the flow of cooling liquid required by the rear electric drive system to perform the cooling operation.

[0012] According to an aspect of an embodiment of the present application, a cooling method of an electric drive system in a vehicle is provided, which is applied to a cooling system of the electric drive system in the vehicle, and the system comprises a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device, wherein the heat dissipation device is connected with the front electric drive system, the rear electric drive system and the non-electric drive device; the method comprises the following steps: controlling the heat dissipation device to output a first flow of cooling liquid to the front electric drive system and the rear electric drive system, and output a second flow of cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; controlling the front electric drive system to perform a cooling operation by using the first flow of cooling liquid and the second flow of cooling liquid; and controlling the rear electric drive system to perform a cooling operation by using the first flow of cooling liquid.

[0013] According to an aspect of an embodiment of the present application, a cooling device of an electric drive system in a vehicle is provided, which can comprise a first control unit, a second control unit and a third control unit, wherein the first control unit is configured to control a heat dissipation device to output a first flow of cooling liquid to a front electric drive system and a rear electric drive system, and output a second flow of cooling liquid to a non-electric drive device, wherein the first flow is different from the second flow; the second control unit is configured to control the front electric drive system to perform a cooling operation by using the first flow of cooling liquid and the second flow of cooling liquid; and the third control unit is configured to control the rear electric drive system to perform a cooling operation by using the first flow of cooling liquid.

[0014] According to another aspect of the embodiments of the present application, a processor is also provided. The processor is configured to execute a program, wherein the program, when executed by the processor, performs the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0015] According to another aspect of the embodiments of the present application, an electronic device is also provided. The electronic device comprises a memory storing a program; and a processor configured to execute the program, wherein the program, when executed by the processor, performs the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0016] According to another aspect of the embodiments of the present application, a computer readable storage medium is also provided. The computer readable storage medium comprises a stored program, wherein the program, when executed by a device in which the computer readable storage medium is located, controls the device to perform the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0017] According to another aspect of the embodiments of the present application, a computer program product is also provided. The computer program product comprises a computer program, wherein the computer program, when executed by a processor, implements the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0018] According to another aspect of the embodiments of the present application, a computer program product is also provided. The computer program product comprises a non-transitory computer readable storage medium configured to store a computer program, wherein the computer program, when executed by a processor, implements the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0019] According to another aspect of the embodiments of the present application, a computer program is also provided. The computer program, when executed by a processor, implements the method for cooling the electric drive system in the vehicle according to the embodiments of the present application.

[0020] In the embodiment of the present application, in the cooling system of the electric drive system in the vehicle, the heat dissipation device, the front electric drive system, the rear electric drive system and the non-electric drive device can be deployed, wherein the heat dissipation device is used to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of the cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; the front electric drive system is used to perform the cooling operation through the first flow of the cooling liquid and the second flow of the cooling liquid; the rear electric drive system is used to perform the cooling operation through the first flow of the cooling liquid. Since the heat dissipation device connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively in the embodiment of the present application, the first flow of the cooling liquid can be output to the front electric drive system and the rear electric drive system respectively, and the second flow of the cooling liquid can be output to the non-electric drive device, the front electric drive system performs the cooling operation through the first flow of the cooling liquid and the second flow of the cooling liquid, and the rear electric drive system performs the cooling operation through the first flow of the cooling liquid, thereby achieving the purpose of meeting the heat dissipation demand of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further realizing the technical effect of improving the cooling speed of the electric drive system in the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0022] Figure 1 FIG. 1 is a schematic diagram of a cooling system of an electric drive system in a vehicle according to an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a flow chart of a cooling method of an electric drive system in a vehicle according to an embodiment of the present application;

[0024] FIG. 3(a) is a schematic diagram of a low-temperature cooling system of a passenger vehicle based on a Venturi flow limiting according to an embodiment of the present application;

[0025] FIG. 3(b) is a schematic diagram of a Venturi structure according to an embodiment of the present application;

[0026] Figure 4 FIG. 4 is a schematic diagram of a cooling device of an electric drive system in a vehicle according to an embodiment of the present application;

[0027] Figure 5 FIG. 5 is a schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work should belong to the protection scope of the present application.

[0029] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to include only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0030] Figure 1 is a schematic diagram of a cooling system of an electric drive system in a vehicle according to an embodiment of the present application, as shown in Figure 1 The system 100 can include a heat dissipation device 101, a front electric drive system 102, a rear electric drive system 103 and a non-electric drive device 104, and the heat dissipation device 101 is connected to the front electric drive system 102, the rear electric drive system 103 and the non-electric drive device 104 respectively.

[0031] The heat dissipation device 101 is configured to output a first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output a second flow of cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow.

[0032] In the technical solution provided by the heat dissipation device 101 in the present application, the first flow is different from the second flow. For example, the first flow can be greater than the second flow, or much greater than the second flow. The first flow can be represented by A, and the second flow can be represented by B.

[0033] In this embodiment, the heat dissipation device can be different types of heat sinks. For example, different types of heat sinks can include water-cooled heat sinks and pipe belt heat sinks, etc., which are only used as examples and are not specifically limited.

[0034] In this embodiment, the above-mentioned cooling liquid can be different types of cooling liquids. For example, different types of cooling liquids can include: a water-based cooling liquid, a glycerol-based cooling liquid, and a special-purpose cooling liquid, etc., the water-based cooling liquid is a mixture of water and an antifreeze agent (for example, ethylene glycol), the glycerol-based cooling liquid is a mixture of water and glycerol, and the special-purpose cooling liquid is a mixture of water and an anti-corrosion additive, which are only exemplified here and are not specifically limited.

[0035] In this embodiment, the first flow of cooling liquid can be output to the front electric drive system and the rear electric drive system by the heat dissipation device connected to the front electric drive system and the rear electric drive system, respectively, and the second flow of cooling liquid can be output to the non-electric drive device by the heat dissipation device through the venturi.

[0036] Optionally, the first flow of cooling liquid can be output to the front electric drive system and the rear electric drive system by the heat dissipation device connected to the front electric drive system and the rear electric drive system, respectively. For example, the first flow of cooling liquid can be output to the front electric drive system by the heat dissipation device through the water pump and the venturi, and the first flow of cooling liquid can be output to the rear electric drive system by the heat dissipation device through the water pump.

[0037] The front electric drive system 102 is configured to perform a cooling operation by the first flow of cooling liquid and the second flow of cooling liquid.

[0038] In the technical solution provided by the above-mentioned front electric drive system 102 of the present application, the front electric drive system and the rear electric drive system are deployed at different positions in the vehicle, and the front electric drive system can include an electric motor, an inverter, a cooling pipeline, and a motor control unit, etc. For example, the front electric drive system can also be referred to as the front electric drive hereinafter.

[0039] In this embodiment, the above-mentioned non-electric drive device can be a controller.

[0040] In this embodiment, the first flow of cooling liquid output from the water pump can be received by the front electric drive system through the venturi, and the second flow of cooling liquid output from the non-electric drive device can be received by the front electric drive system through the venturi, and then the front electric drive system can perform a cooling operation by receiving the first flow of cooling liquid and the second flow of cooling liquid, thereby achieving the purpose of reducing the heat generation temperature of the front electric drive system.

[0041] Optionally, the A flow of cooling liquid output from the water pump can be received by the front electric drive through the venturi, and the B flow of cooling liquid output from the controller can be received by the front electric drive through the venturi, and then the front electric drive can perform a cooling operation by receiving the A flow of cooling liquid and the B flow of cooling liquid, thereby achieving the purpose of reducing the heat generation temperature of the front electric drive system.

[0042] A rear electric drive system 103 is configured to perform a cooling operation by using the first flow of the coolant.

[0043] In the technical solution of the above rear electric drive system 103 of the present application, the rear electric drive system can include an electric motor, an inverter, a cooling pipeline, a motor control unit, etc. For example, the rear electric drive system can also be referred to as a rear electric drive hereinafter.

[0044] In this embodiment, the rear electric drive system can receive the first flow of the coolant output from the water pump through the venturi. Alternatively, the rear electric drive system can receive the first flow of the coolant output from the water pump through the venturi, and the rear electric drive system can perform a cooling operation by using the received first flow of the coolant, thereby achieving the purpose of reducing the heat generation temperature of the rear electric drive system.

[0045] In the embodiment of the present application, in the cooling system of the electric drive system in the vehicle, a heat dissipation device, a front electric drive system, a rear electric drive system, and a non-electric drive device can be deployed, wherein the heat dissipation device is configured to output a first flow of coolant to the front electric drive system and the rear electric drive system, respectively, and output a second flow of coolant to the non-electric drive device, wherein the first flow is different from the second flow; the front electric drive system is configured to perform a cooling operation by using the first flow of coolant and the second flow of coolant; and the rear electric drive system is configured to perform a cooling operation by using the first flow of coolant. Since the heat dissipation device connected to the front electric drive system, the rear electric drive system, and the non-electric drive device, respectively, in the embodiment of the present application, can output a first flow of coolant to the front electric drive system and the rear electric drive system, respectively, and output a second flow of coolant to the non-electric drive device, the front electric drive system can perform a cooling operation by using the first flow of coolant and the second flow of coolant, and the rear electric drive system can perform a cooling operation by using the first flow of coolant, thereby achieving the purpose of meeting the heat dissipation requirements of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further achieving the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0046] The above cooling system of the electric drive system in the vehicle of this embodiment will be further introduced as follows.

[0047] As an optional embodiment, the system further comprises: a Venturi tube, the Venturi tube comprising: a main path water inlet, a branch water outlet, a branch water inlet and a main path water outlet, the Venturi tube being connected with the heat dissipation device, the front electric drive system and the non-electric drive device respectively, wherein the heat dissipation device is configured to output the second flow of the cooling liquid to the Venturi tube; the Venturi tube is configured to output the second flow of the cooling liquid to the branch water outlet through the main path water inlet, and output the second flow of the cooling liquid to the non-electric drive device through the branch water outlet; the non-electric drive device is configured to output the second flow of the cooling liquid to the Venturi tube through the branch water inlet; or the Venturi tube is configured to output the second flow of the cooling liquid to the front electric drive system through the main path water outlet.

[0048] In this embodiment, the Venturi tube described above can comprise: a main path water inlet, a branch water outlet, a branch water inlet and a main path water outlet, and the Venturi tube is connected with the heat dissipation device, the front electric drive system and the non-electric drive device respectively.

[0049] In this embodiment, after the heat dissipation device connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively outputs the second flow of the cooling liquid to the Venturi tube through the water pump, the Venturi tube can output the second flow of the cooling liquid to the branch water outlet through the main path water inlet, and output the second flow of the cooling liquid to the non-electric drive device through the branch water outlet.

[0050] In this embodiment, after the Venturi tube outputs the second flow of the cooling liquid to the branch water outlet through the main path water inlet, and outputs the second flow of the cooling liquid to the non-electric drive device through the branch water outlet, the non-electric drive device can perform a cooling operation through the second flow of the cooling liquid, and then the non-electric drive device can output the second flow of the cooling liquid after the cooling operation to the Venturi tube through the branch water inlet.

[0051] In this embodiment, after the non-electric drive device outputs the second flow of the cooling liquid to the Venturi tube through the branch water inlet, the Venturi tube can output the second flow of the cooling liquid to the front electric drive system through the main path water outlet, thereby achieving the purpose of returning the second flow of the cooling liquid to the original branch where the front electric drive system is located in the Venturi tube, thereby realizing the technical effect of improving the cooling speed of the front electric drive system.

[0052] The cooling system of the electric drive system in the vehicle described above in this embodiment will be further introduced below.

[0053] As an optional embodiment, the heat dissipation device is configured to output the first flow of the cooling liquid to the Venturi tube; the Venturi tube is configured to output the first flow of the cooling liquid to the main path water outlet through the main path water inlet, and output the first flow of the cooling liquid to the front electric drive system through the main path water outlet.

[0054] In this embodiment, after the heat dissipation device outputs the first flow of cooling liquid to the water pump, the water pump can receive the first flow of cooling liquid through the main inlet of the venturi, and then output the first flow of cooling liquid through the main outlet, thereby outputting the first flow of cooling liquid to the front electric drive system through the main outlet, thereby achieving the purpose of flowing the first flow of cooling liquid into the original branch where the front electric drive system is located through the venturi, thereby realizing the technical effect of improving the cooling speed of the front electric drive system.

[0055] The cooling system of the electric drive system in the vehicle of the above embodiment will be further introduced below.

[0056] As an optional embodiment, the system further includes a water pump connected with the heat dissipation device, the venturi and the rear electric drive system, wherein the heat dissipation device is configured to output the first flow of cooling liquid and the second flow of cooling liquid to the water pump; the water pump is configured to drive the first flow of cooling liquid and the second flow of cooling liquid to be output to the venturi, and drive the first flow of cooling liquid to be output to the rear electric drive system.

[0057] In this embodiment, the water pump can be connected with the heat dissipation device, the venturi and the rear electric drive system, respectively. The water pump is an electric water pump.

[0058] In this embodiment, after the heat dissipation device outputs the first flow of cooling liquid and the second flow of cooling liquid to the water pump, the water pump can drive the first flow of cooling liquid to be output to the main inlet of the venturi, and also drive the second flow of cooling liquid to be output to the branch outlet of the venturi, and the water pump can drive the first flow of cooling liquid to be output to the cooling pipeline of the rear electric drive system, thereby achieving the purpose of outputting the cooling liquid to the front electric drive system and the rear electric drive system, respectively, thereby realizing the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0059] The cooling system of the electric drive system in the vehicle of the above embodiment will be further introduced below.

[0060] As an optional embodiment, the heat dissipation device is connected with the venturi, the front electric drive system and the rear electric drive system in parallel, the venturi is connected with the non-electric drive device in parallel, and the venturi is connected with the front electric drive system in series.

[0061] In this embodiment, the heat dissipation device can be connected with the venturi, the front electric drive system and the rear electric drive system in parallel, respectively. For example, the radiator can be connected with the venturi, the front electric drive and the rear electric drive in parallel, respectively.

[0062] In this embodiment, the venturi can be connected with the non-electric drive device in parallel, and the venturi can be connected with the front electric drive system in series. For example, the venturi can be connected with the controller in parallel, and the venturi can be connected with the front electric drive in series.

[0063] The cooling system of the electric drive system in the vehicle is further described as follows.

[0064] As an optional embodiment, the first cooling liquid demand information of the front electric drive system is the same as the second cooling liquid demand information of the rear electric drive system, wherein the first cooling liquid demand information is used to represent the flow rate of the cooling liquid required by the front electric drive system to perform the cooling operation, and the second cooling liquid demand information is used to represent the flow rate of the cooling liquid required by the rear electric drive system to perform the cooling operation.

[0065] In this embodiment, the first cooling liquid demand information of the front electric drive system is the same as the second cooling liquid demand information of the rear electric drive system.

[0066] In this embodiment, the first cooling liquid demand information can be used to represent the flow rate of the cooling liquid required by the front electric drive system to perform the cooling operation. For example, the flow rate represented by the first cooling liquid demand information can be the same as the first flow rate, which is only used as an example and is not limited specifically.

[0067] In this embodiment, the second cooling liquid demand information can be used to represent the flow rate of the cooling liquid required by the rear electric drive system to perform the cooling operation. For example, the flow rate represented by the second cooling liquid demand information can be the same as the first flow rate, which is only used as an example and is not limited specifically.

[0068] In the embodiment of the present application, in the cooling system of the electric drive system in the vehicle, a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device can be deployed, wherein the heat dissipation device is used to output the first flow rate of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow rate of the cooling liquid to the non-electric drive device, wherein the first flow rate is different from the second flow rate; the front electric drive system is used to perform the cooling operation by the first flow rate of the cooling liquid and the second flow rate of the cooling liquid; and the rear electric drive system is used to perform the cooling operation by the first flow rate of the cooling liquid. Since the heat dissipation device connected to the front electric drive system, the rear electric drive system and the non-electric drive device respectively in the embodiment of the present application can output the first flow rate of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow rate of the cooling liquid to the non-electric drive device, and the front electric drive system performs the cooling operation by the first flow rate of the cooling liquid and the second flow rate of the cooling liquid, and the rear electric drive system performs the cooling operation by the first flow rate of the cooling liquid, thereby achieving the purpose of meeting the heat dissipation requirement of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further realizing the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0069] According to an embodiment of the present application, a cooling method for an electric drive system in a vehicle is provided. The method is applied to a cooling system of the electric drive system in the vehicle, and the system includes a heat dissipation device, a front electric drive system, a rear electric drive system, and a non-electric drive device. The heat dissipation device is connected to the front electric drive system, the rear electric drive system, and the non-electric drive device, respectively.

[0070] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0071] Figure 2 is a flowchart of a cooling method for an electric drive system in a vehicle according to an embodiment of the present application, as shown in Figure 1 The method can include the following steps:

[0072] Step S201, control the heat dissipation device, respectively, output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system, and output the second flow of the cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow.

[0073] In the technical solution provided by the above step S201 of the present application, the first flow is different from the second flow.

[0074] In this embodiment, the heat dissipation device can be different types of heat sinks. For example, different types of heat sinks can include water-cooled heat sinks and pipe belt heat sinks, etc., which are only exemplified here and are not specifically limited.

[0075] In this embodiment, the cooling liquid can be different types of cooling liquid. For example, different types of cooling liquid can include water-based cooling liquid, glycerol-based cooling liquid, and special-purpose cooling liquid, etc., the water-based cooling liquid is a mixture of water and antifreeze (e.g., ethylene glycol), the glycerol-based cooling liquid is a mixture of water and glycerol, and the special-purpose cooling liquid is a mixture of water and corrosion-resistant additives, which are only exemplified here and are not specifically limited.

[0076] In this embodiment, the heat dissipation device is controlled to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system, respectively, and to output the second flow of the cooling liquid to the non-electric drive device. Alternatively, this embodiment controls the heat dissipation device connected to the front electric drive system, the rear electric drive system, and the non-electric drive device, respectively, to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system, respectively, and controls the heat dissipation device to output the second flow of the cooling liquid to the non-electric drive device through a venturi.

[0077] Optionally, the heat dissipation device connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively is controlled to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively. For example, the heat dissipation device is controlled to output the first flow of the cooling liquid to the front electric drive system through the water pump and the venturi, and the heat dissipation device is controlled to output the first flow of the cooling liquid to the rear electric drive system through the water pump.

[0078] In step S202, the front electric drive system is controlled to perform the cooling operation through the first flow of the cooling liquid and the second flow of the cooling liquid.

[0079] In the technical solution provided by the above step S202 of the application, the front electric drive system and the rear electric drive system are arranged at different positions in the vehicle, and the front electric drive system can include a motor, an inverter, a cooling pipeline, a motor control unit, etc. For example, the front electric drive system can also be referred to as the front electric drive hereinafter.

[0080] In this embodiment, the non-electric drive device can be a controller.

[0081] In this embodiment, after the heat dissipation device is controlled to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of the cooling liquid to the non-electric drive device, the front electric drive system is controlled to receive the first flow of the cooling liquid output from the water pump through the venturi, and the front electric drive system is controlled to receive the second flow of the cooling liquid output from the non-electric drive device through the venturi, and then the front electric drive system is controlled to perform the cooling operation through the received first flow of the cooling liquid and the second flow of the cooling liquid, thereby achieving the purpose of reducing the heat generation temperature of the front electric drive system.

[0082] Optionally, the front electric drive is controlled to receive the A flow of the cooling liquid output from the water pump through the venturi, and the front electric drive is controlled to receive the B flow of the cooling liquid output from the controller through the venturi, and then the front electric drive is controlled to perform the cooling operation through the received A flow of the cooling liquid and B flow of the cooling liquid, thereby achieving the purpose of reducing the heat generation temperature of the front electric drive system.

[0083] In step S203, the rear electric drive system is controlled to perform the cooling operation through the first flow of the cooling liquid.

[0084] In the technical solution provided by the above step S203 of the application, the rear electric drive system can include a motor, an inverter, a cooling pipeline, a motor control unit, etc.

[0085] In this embodiment, after controlling the heat dissipation device to output the first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of cooling liquid to the non-electric drive device, the rear electric drive system is controlled to receive the first flow of cooling liquid output from the water pump through the venturi, and then the rear electric drive system is controlled to perform a cooling operation through the received first flow of cooling liquid.

[0086] The above steps S201 to S203 of the present application can be performed by the heat dissipation device connected to the front electric drive system, the rear electric drive system and the non-electric drive device respectively, to output the first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of cooling liquid to the non-electric drive device, perform a cooling operation by the front electric drive system through the first flow of cooling liquid and the second flow of cooling liquid, and perform a cooling operation by the rear electric drive system through the first flow of cooling liquid, thereby achieving the purpose of meeting the cooling demand of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further achieving the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0087] In this embodiment, the cooling method of the electric drive system in the vehicle can be performed by the low-temperature cooling system of the passenger car based on the venturi flow limiting, to control the front electric drive system to perform a cooling operation through the first flow of cooling liquid and the second flow of cooling liquid, and control the rear electric drive system to perform a cooling operation through the first flow of cooling liquid. For example, the system can include a radiator, an electric water pump, a venturi, a controller, a front electric drive and a rear electric drive. Among them, the radiator can be connected in series with the electric water pump, the electric water pump can be connected in parallel with the venturi and the rear electric drive, the venturi can be connected in parallel with the controller, and the venturi can be connected in parallel with the front electric drive.

[0088] In this embodiment, the two ends of the controller are connected to the water inlet of the venturi, and a part of the flow is introduced to meet the cooling demand of the controller according to Bernoulli's principle, and then returns to the venturi to join the original branch to continue participating in the cooling of the front electric drive. Among them, according to simulation calculation, since the controller generates less heat, the temperature of the cooling liquid passing through the controller will rise by 3-4℃, and after joining the branch where the front electric drive is located, the water temperature of the front electric drive will only rise by 1-2℃, which has little effect on the cooling effect of the electric drive system.

[0089] It should be noted that the above-mentioned venturi is a device using the principle of fluid mechanics, and its basic structure is a section of tapered pipe. Among them, the above-mentioned venturi can include a converging section (converging section), a throat and a diverging section (expanding section), the converging section is a pipe part with gradually decreasing cross-sectional area, the throat is the part with the smallest cross-sectional area, and the diverging section is a pipe part with gradually increasing cross-sectional area and restoring to the original size.

[0090] Optionally, the Venturi effect is the result of the Bernoulli equation and the law of conservation of mass (continuity equation). Among them, the continuity equation is that when the incompressible fluid (for example, water) flows steadily in the pipe, the mass of the fluid flowing through any cross section of the pipe per unit time is equal, so the flow rate is inversely proportional to the cross-sectional area, and the continuity equation can be shown as equation (1) as follows:

[0091] A1 x v1 = A2 x v2 (1)

[0092] Among them, A1 can be used to represent the cross-sectional area of the throat, v1 can be used to represent the flow rate of the fluid flowing through the throat, A2 can be used to represent the cross-sectional area of the diffusion section, and v2 can be used to represent the flow rate of the fluid flowing through the diffusion section. For example, in the Venturi tube, when the fluid enters the throat (A2

[0093] Optionally, the above Bernoulli equation can be used to describe that the sum of the pressure energy, kinetic energy and potential energy of the fluid on a streamline is constant. For example, for a horizontally placed Venturi tube, the equation can be simplified as equation (2) as follows:

[0094] P + 1 / 2 p v2 = constant (2)

[0095] Among them, P can be used to represent the static pressure of the fluid, p can be used to represent the density of the fluid, and v can be used to represent the velocity of the fluid. For example, in the Venturi tube, when the flow rate of the fluid increases in the throat (v2 increases), in order to keep the equation equal on both sides, the static pressure P of the point decreases, that is, when the fluid flows from a large cross section to a small cross section, the static pressure of the fluid decreases according to the Bernoulli equation, and the static pressure is restored after passing through the throat (cannot be 100% restored due to viscous friction). By using the pressure difference between the throat and the two ends, a fluid circuit can be formed.

[0096] The technical solutions of the embodiments of the present application will be described below in conjunction with preferred embodiments.

[0097] At present, with the rapid development of new energy vehicles, the cooling system of the vehicle has increasingly complex heat dissipation requirements. In the related art, the cooling system mainly adopts a liquid cooling scheme driven by an electric water pump to provide cooling functions for components with large heat dissipation requirements.

[0098] However, with the integration of electronic components such as intelligent driving controllers and vehicle controllers, the heat dissipation requirements of the electric drive system in the vehicle have exceeded the capacity range of the existing cooling system, thereby causing the technical problem of low cooling speed of the electric drive system in the vehicle.

[0099] To solve the above technical problems, the embodiment of the present application proposes a cooling system of an electric drive system in a vehicle, which is connected with a heat dissipation device of a front electric drive system, a heat dissipation device of a rear electric drive system and a heat dissipation device of a non-electric drive device, respectively, can output a first flow of cooling liquid to the front electric drive system and the rear electric drive system, and output a second flow of cooling liquid to the non-electric drive device, and the front electric drive system performs cooling operation through the first flow of cooling liquid and the second flow of cooling liquid, and the rear electric drive system performs cooling operation through the first flow of cooling liquid, thereby achieving the purpose of meeting the heat dissipation demand of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further realizing the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0100] In this embodiment, the cooling method of the electric drive system in the vehicle can be performed through the Venturi flow limiting passenger car low-temperature cooling system to control the front electric drive system to perform cooling operation through the first flow of cooling liquid and the second flow of cooling liquid, and control the rear electric drive system to perform cooling operation through the first flow of cooling liquid. For example, FIG. 3(a) is a schematic diagram of a Venturi flow limiting passenger car low-temperature cooling system according to an embodiment of the present application, as shown in FIG. 3(a), the system can include a radiator 301, an electric water pump 302, a Venturi tube 303, a controller 304, a front electric drive 305 and a rear electric drive 306. Wherein, the radiator 301 can be connected in series with the electric water pump 302, the electric water pump 302 can be connected in parallel with the Venturi tube 303 and the rear electric drive 306, the Venturi tube 303 can be connected in parallel with the controller 304, and the Venturi tube 303 can be connected in parallel with the front electric drive 305.

[0101] In this embodiment, the two ends of the controller 304 are connected to the water inlet of the Venturi tube 303, and a part of the flow is introduced to meet the cooling demand of the controller 304 according to Bernoulli principle, and then returns to the Venturi tube 303 to join the original branch to continue participating in the cooling of the front electric drive. Wherein, according to simulation calculation, since the heat generation of the controller is small, the temperature of the cooling liquid passing through the controller will rise by 3-4℃, and after joining the branch of the front electric drive, the inlet water temperature of the front electric drive will only rise by 1-2℃, which has little effect on the cooling effect of the electric drive system.

[0102] It should be noted that the above-mentioned Venturi tube is a device using fluid mechanics principle, and its basic structure is a section of tapered pipe. Wherein, the above-mentioned Venturi tube can include a converging section (converging section), a throat and a diverging section (expanding section), the converging section is a pipe part with gradually decreasing cross-sectional area, the throat is the part with the smallest cross-sectional area, and the diverging section is a pipe part with gradually increasing cross-sectional area and recovering to the original size.

[0103] Optionally, the Venturi effect is the result of the Bernoulli equation and the law of conservation of mass (continuity equation). The continuity equation states that for an incompressible fluid (e.g. water) flowing steadily in a pipe, the mass of fluid passing any cross-section of the pipe per unit time is the same, so the velocity is inversely proportional to the cross-sectional area. The continuity equation can be expressed as equation (1) above.

[0104] Where A1 can be used to represent the cross-sectional area of the throat, v1 can be used to represent the flow rate of the fluid through the throat, A2 can be used to represent the cross-sectional area of the diffuser, and v2 can be used to represent the flow rate of the fluid through the diffuser. For example, in a Venturi, when the fluid enters the throat from the larger pipe (A2 < A1), the flow rate of the fluid must increase (v2 > v1) according to the continuity equation.

[0105] Optionally, the Bernoulli equation described above can be used to describe that the sum of the pressure energy, kinetic energy, and potential energy of the fluid along a streamline is constant. For example, for a horizontally placed Venturi, the equation can be simplified as equation (2) above.

[0106] Where P can be used to represent the static pressure of the fluid, p can be used to represent the density of the fluid, and v can be used to represent the velocity of the fluid. For example, in a Venturi, when the flow rate of the fluid increases in the throat (v2 increases), the static pressure P at that point must decrease in order to keep the equation balanced. That is, when the fluid flows from a large cross-section to a small cross-section, the static pressure of the fluid decreases, as described by the Bernoulli equation. After passing through the throat, the static pressure recovers (not 100% due to viscous friction), and a fluid circuit is formed using the pressure difference between the throat and the two ends.

[0107] For example, the Venturi structure described above can be as shown in FIG. 3(b), which is a schematic diagram of a Venturi structure according to an embodiment of the present application. In the Venturi structure, there can be a main inlet, a branch outlet, a branch inlet, and a main outlet. The front motor can directly receive A flow of coolant through the main inlet and the main outlet. In addition, the controller can output B flow of coolant to the main outlet through the branch outlet and the branch inlet, and the front motor can receive B flow of coolant through the main outlet.

[0108] In the embodiment, in the cooling system of the electric drive system in the vehicle, the heat dissipation device, the front electric drive system, the rear electric drive system and the non-electric drive device can be deployed, wherein the heat dissipation device is configured to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of the cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; the front electric drive system is configured to perform the cooling operation by the first flow of the cooling liquid and the second flow of the cooling liquid; and the rear electric drive system is configured to perform the cooling operation by the first flow of the cooling liquid. Since the heat dissipation device connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively in the embodiment of the present application, the first flow of the cooling liquid can be output to the front electric drive system and the rear electric drive system respectively, and the second flow of the cooling liquid can be output to the non-electric drive device, the front electric drive system performs the cooling operation by the first flow of the cooling liquid and the second flow of the cooling liquid, and the rear electric drive system performs the cooling operation by the first flow of the cooling liquid, thereby achieving the purpose of meeting the heat dissipation requirement of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further realizing the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0109] According to the embodiment of the present application, a cooling device for the electric drive system in the vehicle is also provided. It should be noted that the cooling device for the electric drive system in the vehicle can be used to execute the cooling method for the electric drive system in the vehicle in the embodiment.

[0110] Figure 4 is a schematic diagram of a cooling device for the electric drive system in the vehicle according to the embodiment of the present application, as shown in Figure 4 The cooling device for the electric drive system in the vehicle 400 can include a first control unit 401, a second control unit 402 and a third control unit 403.

[0111] The first control unit 401 is configured to control the heat dissipation device to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of the cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow.

[0112] The second control unit 402 is configured to control the front electric drive system to perform the cooling operation by the first flow of the cooling liquid and the second flow of the cooling liquid.

[0113] The third control unit 403 is configured to control the rear electric drive system to perform the cooling operation by the first flow of the cooling liquid.

[0114] In this embodiment, a cooling device for an electric drive system in a vehicle is provided, which can include: a first control unit configured to control a heat dissipation device to output a first flow of cooling liquid to a front electric drive system and a rear electric drive system respectively, and output a second flow of cooling liquid to a non-electric drive device, wherein the first flow is different from the second flow; a second control unit configured to control the front electric drive system to perform a cooling operation by the first flow of cooling liquid and the second flow of cooling liquid; and a third control unit configured to control the rear electric drive system to perform a cooling operation by the first flow of cooling liquid, thereby achieving the purpose of meeting the heat dissipation requirements of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further achieving the technical effect of improving the cooling speed of the electric drive system in the vehicle. Since the heat dissipation device connected to the front electric drive system, the rear electric drive system and the non-electric drive device respectively, the first flow of cooling liquid can be output to the front electric drive system and the rear electric drive system respectively, and the second flow of cooling liquid can be output to the non-electric drive device, the front electric drive system performs a cooling operation by the first flow of cooling liquid and the second flow of cooling liquid, and the rear electric drive system performs a cooling operation by the first flow of cooling liquid, thereby achieving the purpose of meeting the heat dissipation requirements of the electric drive system in the vehicle, thereby solving the technical problem of low cooling speed of the electric drive system in the vehicle, and further achieving the technical effect of improving the cooling speed of the electric drive system in the vehicle.

[0115] According to the embodiments of the present application, a processor is also provided, which is used to run a program, wherein the program is executed to perform the cooling method of the electric drive system in the vehicle according to the embodiments when the program is run by the processor.

[0116] According to the embodiments of the present application, an electronic device is also provided. Figure 5 is a schematic diagram of an electronic device according to an embodiment of the present application, as Figure 5 shown, the electronic device 500 can include a memory 510 and a processor 520, wherein the memory 510 is configured to store an executable program; and the processor 520 is configured to run the program stored in the memory 510, and the program is executed to perform the cooling method of the electric drive system in the vehicle according to the present application when the program is run.

[0117] In the present application, a plurality of refers to two or more.

[0118] In the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0119] The terms "first", "second", "third", "fourth" and the like in the present application, if any, are used to distinguish similar objects, and are not necessarily used to describe a particular sequential or chronological order.

[0120] The term "and / or" in the present application is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0121] If not specifically stated, all steps in the present application can be performed in sequence or randomly. For example, the cooling method of the electric drive system in the vehicle of the present application can include step S101 and step S102, which means that the cooling method of the electric drive system in the vehicle of the present application can include sequentially performed step S101 and step S102, or sequentially performed step S102 and step S101.

[0122] For example, the cooling method of the electric drive system in the vehicle of the present application can also include step S103, which means that step S103 can be added to the method in any order, for example, the cooling method of the electric drive system in the vehicle of the present application can include step S101, step S102 and step S103, or step S101, step S103 and step S102, or step S103, step S101 and step S102, etc. Here, only exemplified, not specifically limited.

[0123] According to another aspect of the embodiment of the present application, a computer readable storage medium is also provided. The computer readable storage medium includes a stored program, wherein the program controls the device where the computer readable storage medium is located to perform the cooling method of the electric drive system in the vehicle in the embodiment when the program is running.

[0124] The computer readable storage medium can also be referred to as computer storage medium. It can include a data signal propagating in the baseband or as part of a carrier wave, which carries readable program code. Such a propagating data signal can take various forms, including but not limited to electromagnetic signal, optical signal or any suitable combination of the above. The computer readable storage medium can send, propagate or transmit programs for use by or in conjunction with instruction execution systems, devices or apparatuses.

[0125] The program code contained in the computer readable storage medium can be transmitted by any suitable medium, including but not limited to wireless, wired, optical cable, radio frequency, etc. or any suitable combination of the above.

[0126] According to the embodiment of the present application, a computer program product is also provided, which comprises a computer program. When the computer program is executed by a processor, the method for cooling the electric drive system in the vehicle is implemented.

[0127] According to the embodiment of the present application, a computer program product is also provided, which comprises a non-volatile computer readable storage medium. The non-volatile computer readable storage medium is used to store a computer program. When the computer program is executed by a processor, the method for cooling the electric drive system in the vehicle is implemented.

[0128] According to the embodiment of the present application, a computer program is also provided. When the computer program is executed by a processor, the method for cooling the electric drive system in the vehicle is implemented.

[0129] Optionally, the computer program, when executed by a processor, implements the following program code: controlling the heat dissipation device to output the first flow of the cooling liquid to the front electric drive system and the rear electric drive system respectively, and output the second flow of the cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; controlling the front electric drive system to perform the cooling operation through the first flow of the cooling liquid and the second flow of the cooling liquid; and controlling the rear electric drive system to perform the cooling operation through the first flow of the cooling liquid.

[0130] The serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0131] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0132] In the several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. Of course, the unit embodiment described above is only schematic. For example, the division of the units can be a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units can be indirect coupling or communication connection through some interface, and can be electrical or other forms.

[0133] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment.

[0134] In addition, each function unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0135] If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the part that contributes to the related art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The foregoing storage medium includes a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0136] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A cooling system of an electric drive system in a vehicle, characterized in that, The system comprises: a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device, the heat dissipation device is connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively, wherein, The heat dissipation device is configured to output a first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output a second flow of cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow. The front electric drive system is configured to perform a cooling operation by using the first flow of cooling liquid and the second flow of cooling liquid. The rear electric drive system is configured to perform a cooling operation by using the first flow of cooling liquid.

2. The system of claim 1, wherein, The system further comprises a venturi, the venturi comprises: a main inlet, a branch outlet, a branch inlet and a main outlet, the venturi is connected with the heat dissipation device, the front electric drive system and the non-electric drive device respectively, wherein, The heat dissipation device is configured to output the second flow of cooling liquid to the venturi. The venturi is configured to output the second flow of cooling liquid from the main inlet to the branch outlet, and output the second flow of cooling liquid from the branch outlet to the non-electric drive device. The non-electric drive device is configured to output the second flow of cooling liquid from the branch inlet to the venturi. Alternatively, the venturi is configured to output the second flow of cooling liquid from the main outlet to the front electric drive system.

3. The system of claim 2, wherein, Wherein, The heat dissipation device is configured to output the first flow of cooling liquid to the venturi. The venturi is configured to output the first flow of cooling liquid from the main inlet to the main outlet, and output the first flow of cooling liquid from the main outlet to the front electric drive system.

4. The system of claim 2, wherein, The system further comprises a water pump, the water pump is connected with the heat dissipation device, the venturi and the rear electric drive system respectively, wherein, The heat dissipation device is configured to output the first flow of cooling liquid and the second flow of cooling liquid to the water pump. The water pump is configured to drive the first flow of cooling liquid and the second flow of cooling liquid to be output to the venturi, and drive the first flow of cooling liquid to be output to the rear electric drive system.

5. The system of claim 2, wherein, Wherein, The heat dissipation device is connected with the venturi, the front electric drive system and the rear electric drive system in parallel, the venturi is connected with the non-electric drive device in parallel, and the venturi is connected with the front electric drive system in series.

6. The system of any one of claims 1 to 5, wherein, First cooling liquid demand information of the front electric drive system is the same as second cooling liquid demand information of the rear electric drive system, wherein the first cooling liquid demand information is used to represent a flow of the cooling liquid required by the front electric drive system to perform the cooling operation, and the second cooling liquid demand information is used to represent a flow of the cooling liquid required by the rear electric drive system to perform the cooling operation.

7. A cooling method for an electric drive system in a vehicle, characterized by, A cooling system applied to an electric drive system in a vehicle, the system comprising: a heat dissipation device, a front electric drive system, a rear electric drive system and a non-electric drive device, the heat dissipation device being connected with the front electric drive system, the rear electric drive system and the non-electric drive device respectively, the method further comprising: controlling the heat dissipation device to output a first flow of cooling liquid to the front electric drive system and the rear electric drive system respectively, and output a second flow of cooling liquid to the non-electric drive device, wherein the first flow is different from the second flow; controlling the front electric drive system to perform a cooling operation through the first flow of cooling liquid and the second flow of cooling liquid; controlling the rear electric drive system to perform a cooling operation through the first flow of cooling liquid.

8. A processor, comprising: The processor is configured to execute a program, and the program, when executed by the processor, performs the method of claim 7.

9. An electronic device, comprising: comprising: a memory storing an executable program; a processor configured to execute the program, and the program, when executed, performs the method of claim 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored executable program, and when the executable program is executed, the device where the storage medium is located performs the method of claim 7.

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