Electric drive oil cooling system structure, electric drive assembly device, and vehicle

Abstract

The present invention relates to the technical field of new energy vehicles, and in particular, to an electric drive oil cooling system structure, comprising a common case. An electric control case and a heat exchanger are mounted on the common case; an exchanger water inlet is formed in the heat exchanger; a case water outlet and a case water inlet pipe communicated with each other are formed in the common case; an electric control water pipe is arranged in the electric control case; an electric control water outlet nozzle communicated with the electric control water pipe is arranged on the electric control case; the electric control water outlet nozzle is inserted into the case water inlet pipe; the case water outlet is aligned and communicated with the exchanger water inlet. The objective of the present invention is: achieving the effect of making the electric control water pipe of the electric control case communicated with the heat exchanger by forming the water pipe in the common case. Compared with the prior art, a pipe is additionally provided to make the electric control water pipe of the electric control case communicated with the heat exchanger. The present invention has the characteristics of a simple and reliable structure, a short water pipe distance, small flow resistance, and convenient assembly and maintenance.

Description

Field of the Invention The present disclosure belongs to the technical field of new energy vehicles, and in particular, relates to an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle. Background of the Invention An electric drive is a core power component of a new energy vehicle, integrating functions of propulsion, energy recovery, charging, and the like. Propulsion refers to conversion of electrical energy from a battery into mechanical energy to provide power to the vehicle. Energy recovery refers to conversion of the mechanical energy from the vehicle into the electrical energy to charge the battery. Therefore, the electric drive is an integrated product that features a high degree of coupling between electrical and mechanical systems, and serves as a critical junction component for the mutual conversion between the electrical energy and the mechanical energy in new energy vehicles. During the mutual conversion between the electrical energy and the mechanical energy in the electric drive, current flowing through electrical components of the electric drive generates heat due to electrical resistance. If the generated heat is greater than a heat dissipation capacity, the electrical component may be overheated or burned out, leading to electrical failures in the electric drive, which in turn may result in degraded power performance or power interruption of the vehicle. During the mutual conversion between the electrical energy and the mechanical energy in the electric drive, mechanical components of the electric drive may generate motion. This motion leads to friction, which produces heat. Poor lubrication leads to increased friction and heat generation. If an amount of heat generated exceeds the heat dissipation capacity, it can cause a temperature of a surface of a mechanical component motion pair to rise, leading to wear or seizure. Such conditions may result in mechanical failure in the electric drive, causing the vehicle to fail to operate normally. The heat dissipation capacity is directly related to the electrical performance of the electric drive, while a lubrication effect is directly related to the mechanical performance of the electric drive. Therefore, heat dissipation and lubrication constitute fundamental requirements for the reliable operation of the electric drive. However, efficient and reliable heat dissipation and lubrication for the electric drive is long-standing challenge in the electric drive industry. Summary of the Invention An objective of the present disclosure is to provide an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle, which achieves an effect of communicating an electric control water passage of an electric control housing and a heat exchanger by forming a water passage in a shared housing, and has characteristics of simple and reliable structure, short water passage distance, small flow resistance, and convenience in assembling and maintenance compared with a method in the prior art in which the electric control water passage of the electric control housing and the heat exchanger are communicated by additionally arranging a pipeline. To achieve the above objective, the present disclosure adopts the following technical solutions. An electric drive oil cooling system structure includes a shared housing, where an electric control housing and a heat exchanger are mounted on the shared housing; the heat exchanger is provided with an exchanger water inlet, the shared housing is provided with a housing water outlet and a housing water inlet passage that are communicated with each other, an electric control water passage is provided in the electric control housing, the electric control housing is provided with an electric control water outlet nozzle that is communicated with the electric control water passage, the electric control water outlet nozzle is inserted in the housing water inlet passage, and the housing water outlet is aligned and communicated with the exchanger water inlet. Further, a water passage sealing ring is mounted on the electric control water outlet nozzle. With the above structure design, the electric control water outlet nozzle and the housing water inlet passage are sealed through the water passage sealing ring, which has simple structure and convenience in use. Further, a coarse filter, an electronic oil pump, and a motor housing are also mounted on the shared housing, an oil sump and a housing oil inlet passage are provided in the shared housing, the motor housing is provided with a motor oil return passage, and the motor oil return passage, the oil sump, the housing oil inlet passage, the coarse filter, and the electronic oil pump are communicated in sequence. With the above structure design, the motor oil return passage is directly connected with the electronic oil pump through the oil sump, the housing oil inlet passage, and the coarse filter, which ensures that lubricating oil after cooling a motor preferentially flows into the electronic oil pump, thereby reducing foam generated by gear rotation in the lubricating oil. Consequently, the electronic oil pump operates more stably, an oil cooler achieves a better heat exchange effect, and the practicability is higher. Further, the shared housing is also provided with a housing intermediate oil passage and a housing oil outlet, the heat exchanger is provided with an exchanger oil inlet, a fine filter is also mounted on the shared housing, and the motor oil return passage, the oil sump, the housing oil inlet passage, the coarse filter, the electronic oil pump, the housing intermediate oil passage, the fine filter, the housing oil outlet, and the exchanger oil inlet are communicated in sequence. With the above structure design, the housing oil inlet passage is disposed at an end of the motor oil return passage, which enables hot oil returned from the motor housing to rapidly flow into the heat exchanger under the action of the electronic oil pump, so that the heat exchange efficiency is high, and the overall oil cooling efficiency for the electric drive is improved. Further, an oil pipe is mounted between the fine filter and the housing oil outlet, and the fine filter and the housing oil outlet are communicated through the oil pipe. With the above structure design, the fine filter and the heat exchanger are connected smoothly through the oil pipe, and the oil pipe is disposed in the shared housing, thereby achieving the characteristics of small flow resistance, simplicity, and reliability. Further, a speed reducer case is also mounted on the shared housing, a cavity is formed between the shared housing and the speed reducer case, the oil pipe is located in the cavity, a shaft system for connecting and providing power is provided in the cavity, and the oil pipe is provided with an oil-pipe oil spray orifice for spraying lubricating oil to the shaft system. With the above structure design, the lubricating oil pumped by the electronic oil pump is sprayed out via the oil-pipe spray orifice when flowing through the oil pipe to lubricate the shaft system. Since there are only the housing intermediate oil passage and the fine filter between the electronic oil pump and the oil pipe, the oil pressure loss of the hydraulic oil is minimized. With sufficient pressure and large flow rate, the lubricating oil in the oil pipe can lubricate the shaft system thoroughly, whereby the lubrication requirement of the shaft system can be met at a low rotation speed of the electronic oil pump, the energy consumption of the electronic oil pump during the driving of the vehicle can be reduced, and the practicability is high. Further, the oil pipe is also fixedly connected with an auxiliary pipe, and the auxiliary pipe is also provided with an oil-pipe oil spray orifice for spraying the lubricating oil to the shaft system. With the above structure design, in addition to lubricating the shaft system through the oil-pipe oil spray orifice on the oil pipe, the auxiliary pipe is added to the oil pip. The auxiliary pipe is also provided with the oil-pipe oil spray orifice, which cooperates with the oil-pipe oil spray orifice on the oil pipe to simultaneously lubricate the shaft system from multiple angles, thereby achieving superior lubrication performance and high practicability. Further, the heat exchanger is also provided with an exchanger oil outlet, a motor housing is also mounted on the shared housing, a motor stator is provided in the motor housing, a front end of the motor stator is provided with a front oil spray ring, the front oil spray ring is provided with a front spray orifice, the shared housing is provided with the housing oil outlet and a housing-to-stator oil passage, and the exchanger oil outlet, the housing oil outlet, the housing-to-stator oil passage, and the front spray orifice are communicated in sequence. With the above structure design, the lubricating oil, after being cooled by the heat exchanger, enters the shared housing through the heat exchanger oil outlet and housing oil outlet, and then passes through the housing-to-stator oil passage and the front spray orifice to lubricate and cool the front end of the motor stator, thereby achieving cooling of the front end of the motor stator. This structure is simple and easy to assemble. Further, a rear end of the motor stator is provided with a rear oil spray ring, the rear oil spray ring is provided with a rear spray orifice, and the housing oil outlet, the motor intermediate oil passage, and the rear spray orifice are communicated in sequence. With the above structure design, the lubricating oil cools the front end of the motor stator through the front spray orifice, and simultaneously cools the rear end of the motor stator via the motor intermediate oil passage and the rear spray orifice, thereby achieving the cooling of both the front end and the rear end of the motor stator, and achieving superior cooling effect. Further, the shared housing is also provided with a housing-to-rotor oil passage, the speed reducer case and the motor housing are also mounted on the shared housing, the speed reducer case is provided with a case-to-rotor oil passage, the motor stator is provided in the motor housing, a motor rotor is provided in the motor stator, the cavity is formed between the shared housing and the speed reducer case, the shaft system for connecting and providing power is provided in the cavity, the shaft system is mounted on the motor rotor, the shaft system is provided with an input-shaft-to-rotor oil passage, the motor rotor is provided with a rotor shaft spray orifice, the shared housing is provided with the housing oil outlet, and the housing oil outlet, the housing-to-rotor oil passage, the case-to-rotor oil passage, the rotor oil passage, and the rotor shaft spray orifice are communicated in sequence. With the above structure design, the lubricating oil, after being cooled by the heat exchanger, enters the shared housing sequentially through the heat exchanger oil outlet and the housing oil outlet, and then flows through the housing-to-rotor oil passage, the case-to-rotor oil passage, and the rotor oil passage to reach the rotor shaft spray orifice. Driven by the rotation of the motor rotor, a portion of the lubricating oil is re-sprayed onto the motor stator for secondary heat exchange with the motor stator, thereby further enhancing the cooling efficiency; and the remaining lubricating oil flows to a motion pair of the motor rotor to lubricate the motion pair. The present disclosure further discloses an electric drive assembly device, which includes the foregoing electric drive oil cooling system structure. The present disclosure further discloses a vehicle, which includes a vehicle cooling system and the foregoing electric drive oil cooling system structure, where the heat exchange is also provided with an exchanger water outlet nozzle, the exchanger water outlet nozzle is communicated with the vehicle cooling system, the electric control housing is also provided with an electric control water inlet nozzle communicated with the electric control water passage, and the vehicle cooling system is communicated with the electric control water inlet nozzle of the electric control housing. By adopting the above technical solutions, the present disclosure has the following advantages: 1. The shared housing is provided with the housing water outlet and the housing water inlet passage that are communicated with each other, the electric control water outlet nozzle is inserted in the housing water inlet passage, and the housing water outlet is aligned and communicated with the exchanger water inlet, the heat exchanger only needs to be mounted on the shared housing, to enable the housing water outlet to be aligned with the exchanger water inlet, and then the electric control housing is mounted onto the shared housing to enable the electric control water outlet nozzle to be inserted in the housing water inlet passage, so that an effect of communicating the electric control water passage of the electric control housing and the heat exchanger by using the shared housing can be achieved; and compared with the method for additionally arranging a pipeline to communicate the electric control water passage of the electric control housing and the heat exchanger in the prior art, the present disclosure has the characteristics of simple and reliable structure, short water passage distance, small flow resistance, and convenience in assembling and maintenance. 2. The motor oil return passage is directly connected with the electronic oil pump through the oil sump, the housing oil inlet passage, and the coarse filter, which ensures that the lubricating oil after cooling the motor preferentially flows into the electronic oil pump, thereby reducing foam generated by the gear rotation in the lubricating oil. Consequently, the electronic oil pump operates more stably, the oil cooler achieves a better heat exchange effect, and the practicability is higher. 3. The housing oil inlet passage is disposed at the end of the motor oil return passage, which enables hot oil returned from the motor housing to rapidly flow into the heat exchanger under the action of the electronic oil pump, so that the heat exchange efficiency is high, and the overall oil cooling efficiency for the electric drive is improved. 4. The fine filter and the heat exchanger are connected smoothly through the oil pipe, and the oil pipe is disposed in the shared housing, thereby achieving the characteristics of small flow resistance, simplicity, and reliability. 5. The lubricating oil pumped by the electronic oil pump is sprayed out via the oil-pipe spray orifice when flowing through the oil pipe to lubricate the shaft system. Since there are only the housing intermediate oil passage and the fine filter between the electronic oil pump and the oil pipe, the oil pressure loss of the hydraulic oil is minimized. With sufficient pressure and large flow rate, the lubricating oil in the oil pipe can lubricate the shaft system thoroughly, whereby the lubrication requirement of the shaft system can be met at a low rotation speed of the electronic oil pump, the energy consumption of the electronic oil pump during the driving of the vehicle can be reduced, and the practicability is high. Brief Description of the Drawings The present disclosure may be further described by non-restrictive embodiments shown in the accompanying drawings. Fig. 1 is a schematic structural diagram I of an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 2 is a schematic structural diagram II of an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 3 is an exploded schematic structural diagram of an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 4 is a schematic structural diagram I of a shared housing in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 5 is a schematic structural diagram II of a shared housing in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 6 is a schematic structural diagram of a motor housing in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 7 is a schematic structural diagram of an electric control housing in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 8 is a schematic structural diagram of an oil pipe in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; Fig. 9 is a schematic structural diagram of a heat exchanger in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure; and Fig. 10 is a schematic structural diagram of shaft system in an electric drive oil cooling system structure, an electric drive assembly device, and a vehicle according to an embodiment of the present disclosure. Description of reference numerals of main components is as follows: shared housing 1, housing oil inlet passage 10, housing intermediate oil passage 11, housing oil outlet 12, housing oil outlet 13, housing water outlet 14, housing water inlet passage 15, housing-to-stator oil passage 16, housing-to-rotor oil passage 17, coarse filter 2, electronic oil pump 3, fine filter 4, heat exchanger 5, exchanger oil inlet 51, exchanger oil outlet 52, exchanger water inlet 53, exchanger water outlet nozzle 54, motor housing 6, motor intermediate oil passage 61, motor oil return passage 62, front oil spray ring 7, front spray orifice 71, rear oil spray ring 8, rear spray orifice 81, motor stator 9, motor rotor 10A, rotor shaft spray orifice 10A1, speed reducer case 11 A, case-to-rotor oil passage 11A1, shaft system 12A, input-shaft-to-rotor oil passage 12A1, electric control housing 13A, electric control water inlet nozzle 13A1, electric control water passage 13A2, electric control water outlet nozzle 13A3, water passage sealing ring 13A4, oil pipe 14A, oil-pipe oil spray orifice 14A1, auxiliary pipe 14A2, and oil sump 15A. Detailed Description of the Embodiments The present disclosure is described in detail below with reference to the attached drawings and specific embodiments. It should be noted that in the attached drawings or descriptions, similar or identical parts all use the same reference numerals, and the implementations not shown or described in the attached drawings are known to ordinary technicians in the related art. Directional terms mentioned in the following embodiments, such as upper, lower, top, bottom, left, left, right, front or rear, etc., are only directions referring to the attached drawings, rather than limitations to the scope of the protection of the present disclosure. Embodiment I As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 7, and Fig. 9, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A and a heat exchanger 5 are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, and the shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, and the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. In the present embodiment, when the system is operated, cooling water enters the housing water inlet passage 15 from the electric control water passage 13A2 via the electric control water outlet nozzle 13A3, then enters the exchanger water inlet 53 via the housing water outlet 14 to reach the heat exchanger 5, and exchanges heat with lubricating oil in the heat exchanger 5. Embodiment II As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 7, and Fig. 9, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A and a heat exchanger 5 are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, and the shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The present embodiment differs from Embodiment I in that the electric control water outlet nozzle 13A3 and the housing water inlet passage 15 are sealed by using the water passage sealing ring 13A4. Embodiment III As shown in Fig. 1 to Fig. 9, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, and a motor housing 6 are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53 and an exchanger oil inlet 51. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. The present embodiment differs from Embodiment III in that an oil path of the lubricating oil after exchanging heat with various components of the motor is specifically defined as follows: the lubricating oil after the heat exchange flows into the oil sump 15A of the shared housing 1 from the motor oil return passage 62 of the motor housing 6 under the action of the electronic oil pump 3, then enters the coarse filter 2 vi the housing oil inlet passage 10, and subsequently flows through the electronic oil pump 3 into the housing intermediate oil passage 11 of the shared housing 1 to reach the fine filter 4 for filtration; and after the filtration, the lubricating oil exits the shared housing (1) through the oil pipe 14A via the housing oil outlet 12, and finally enters the heat exchanger 5 through the exchanger oil inlet 51 for heat exchange. Embodiment IV As shown in Fig. 1 to Fig. 10, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, a motor housing 6, and a speed reducer case 11A are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53 and an exchanger oil inlet 51. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. A cavity is formed between the shared housing 1 and the speed reducer case 11 A, a shaft system 12A for connecting and providing power is provided in the cavity, the oil pipe 14A is located in the cavity, the oil pipe 14A is also fixedly connected with an auxiliary pipe 14A2, and both the oil pipe 14A and the auxiliary pipe 14A2 are respectively provided with an oilpipe oil spray orifice 14Al for spraying lubricating oil to the shaft system 12A. The present embodiment differs from Embodiment III in that the oil pipe 14A is further defined, the oil pipe 14A is also fixedly connected with the auxiliary pipe 14A2, both the oil pipe 14A and the auxiliary pipe 14A2 are respectively provided with the oil-pipe oil spray orifice 14A1 for spraying the lubricating oil to the shaft system 12Ato simultaneously lubricate the shaft system 12A, thereby achieving multi-angle lubrication. Embodiment V As shown in Fig. 1 to Fig. 10, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, and a motor housing 6 are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53 and an exchanger oil inlet 51. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. A motor stator 9 is provided in the motor housing 6, a front end of the motor stator 9 is provided with a front oil spray ring 7, the front oil spray ring 7 is provided with a front spray orifice 71, the shared housing 1 is provided with a housing oil outlet 13 and a housing-to-stator oil passage 16, and the exchanger oil outlet 52, the housing oil outlet 13, the housing-to-stator oil passage 16, and the front spray orifice 71 are communicated in sequence. A rear end of the motor stator 9 is provided with a rear oil spray ring 8, the rear oil spray ring 8 is provided with a rear spray orifice 81, the motor housing 6 is provided with a motor intermediate oil passage 61, and the housing oil outlet 13, the motor intermediate oil passage 61, and the rear spray orifice 81 are communicated in sequence. The present embodiment differs from Embodiment III in that a cooling mode of a motor is further defined specifically as follows: the front oil spray ring 7 and the rear oil spray ring 8 are used to spray lubricating oil to the front end and the rear end of the motor stator 9 for cooling, thereby cooling the front end and the rear end of the motor stator 9. The lubricating oil after the cooling flows into the motor oil return passage 62 to form a loop with an oil path of the lubricating oil after heat exchange, thereby achieving the circulation of the lubricating oil. Embodiment VI As shown in Fig. 1 to Fig. 10, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A, a heat exchanger 5, a speed reducer case 11 A, and a motor housing 6 are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, and the shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing-to-rotor oil passage 17, the speed reducer case 11A is provided with a case-to-rotor oil passage 11 Al, a motor stator 9 is provided in the motor housing 6, a motor rotor 10A is provided in the motor stator 9, the speed reducer case 11A is also mounted on the shared housing 1, a cavity is formed between the shared housing 1 and the speed reducer case 11 A, a shaft system 12A for connecting and providing power is provided in the cavity, the shaft system 12A is mounted on the motor rotor 10A, the shaft system 12A is provided with an input-shaft-to-rotor oil passage 12A1, the motor rotor 10A is provided with a rotor shaft spray orifice 10A1, the shared housing 1 is provided with a housing oil outlet 13, and the housing oil outlet 13, the housing-to-rotor oil passage 17, the case-to-rotor oil passage 11A1, the rotor oil passage 12A1, and the rotor shaft spray orifice 10A1 are communicated in sequence. The present embodiment differs from Embodiment I in that the motor stator 9 is further cooled, and a motion pair is simultaneously lubricated. To be specific, the lubricating oil, after being cooled by the heat exchanger 5, enters the shared housing 1 sequentially through the heat exchanger oil outlet 52 and the housing oil outlet 13, and then flows through the housing-to-rotor oil passage 17, the case-to-rotor oil passage 11A1, and the rotor oil passage 12A1 to reach the rotor shaft spray orifice 10A1. Driven by the rotation of the motor rotor 10A, a portion of the lubricating oil is re-sprayed onto the motor stator 9 for secondary heat exchange with the motor stator 9, thereby further enhancing the cooling efficiency; and the remaining lubricating oil flows to the motion pair of the motor rotor 10A to lubricate the motion pair. Embodiment VII As shown in Fig. 1 to Fig. 10, an electric drive oil cooling system structure according to the present disclosure includes a shared housing 1, where an electric control housing 13A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, a motor housing 6, and a speed reducer case 11A are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, an exchanger oil inlet 51, and an exchanger oil outlet 52. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. A cavity is formed between the shared housing 1 and the speed reducer case 11 A, a shaft system 12A for connecting and providing power is provided in the cavity, the oil pipe 14A is located in the cavity, the oil pipe 14A is also fixedly connected with an auxiliary pipe 14A2, and both the oil pipe 14A and the auxiliary pipe 14A2 are respectively provided with an oilpipe oil spray orifice 14Al for spraying lubricating oil to the shaft system 12A. A motor stator 9 is provided in the motor housing 6, a front end of the motor stator 9 is provided with a front oil spray ring 7, the front oil spray ring 7 is provided with a front spray orifice 71, the shared housing 1 is provided with a housing oil outlet 13 and a housing-to-stator oil passage 16, and the exchanger oil outlet 52, the housing oil outlet 13, the housing-to-stator oil passage 16, and the front spray orifice 71 are communicated in sequence. A rear end of the motor stator 9 is provided with a rear oil spray ring 8, the rear oil spray ring 8 is provided with a rear spray orifice 81, the motor housing 6 is provided with a motor intermediate oil passage 61, and the housing oil outlet 13, the motor intermediate oil passage 61, and the rear spray orifice 81 are communicated in sequence. The shared housing 1 is also provided with a housing-to-rotor oil passage 17, the speed reducer case 11A is provided with a case-to-rotor oil passage 11A1, a motor rotor 10A is provided in the motor stator 9, a shaft system 12A is mounted on the motor rotor 10A, the shaft system 12A is provided with an input-shaft-to-rotor oil passage 12A1, the motor rotor 10A is provided with a rotor shaft spray orifice 10A1, the housing oil outlet 13, the housing-to-rotor oil passage 17, the case-to-rotor oil passage 11A1, the rotor oil passage 12A1, and the rotor shaft spray orifice 10A1 are communicated in sequence. Embodiment VIII As shown in Fig. 1 to Fig. 10, an electric drive assembly device according to the present disclosure includes an electric drive oil cooling system structure, where the oil cooling system structure includes a shared housing 1, and an electric control housing 13 A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, a motor housing 6, and a speed reducer case 11A are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, an exchanger oil inlet 51, and an exchanger oil outlet 52. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 that is communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, and the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. A cavity is formed between the shared housing 1 and the speed reducer case 11 A, a shaft system 12A for connecting and providing power is provided in the cavity, the oil pipe 14A is located in the cavity, the oil pipe 14A is also fixedly connected with an auxiliary pipe 14A2, and both the oil pipe 14A and the auxiliary pipe 14A2 are respectively provided with an oilpipe oil spray orifice 14Al for spraying lubricating oil to the shaft system 12A. A motor stator 9 is provided in the motor housing 6, a front end of the motor stator 9 is provided with a front oil spray ring 7, the front oil spray ring 7 is provided with a front spray orifice 71, the shared housing 1 is provided with a housing oil outlet 13 and a housing-to-stator oil passage 16, and the exchanger oil outlet 52, the housing oil outlet 13, the housing-to-stator oil passage 16, and the front spray orifice 71 are communicated in sequence. A rear end of the motor stator 9 is provided with a rear oil spray ring 8, the rear oil spray ring 8 is provided with a rear spray orifice 81, the motor housing 6 is provided with a motor intermediate oil passage 61, and the housing oil outlet 13, the motor intermediate oil passage 61, and the rear spray orifice 81 are communicated in sequence. The shared housing 1 is also provided with a housing-to-rotor oil passage 17, the speed reducer case 11A is provided with a case-to-rotor oil passage 11A1, a motor rotor 10A is provided in the motor stator 9, a shaft system 12A is mounted on the motor rotor 10A, the shaft system 12A is provided with an input-shaft-to-rotor oil passage 12A1, the motor rotor 10A is provided with a rotor shaft spray orifice 10A1, the housing oil outlet 13, the housing-to-rotor oil passage 17, the case-to-rotor oil passage 11A1, the rotor oil passage 12A1, and the rotor shaft spray orifice 10A1 are communicated in sequence. Embodiment IX A vehicle includes a vehicle cooling system and an electric drive oil cooling system structure, where a heat exchanger 5 is also provided with an exchanger water outlet nozzle 54, the exchanger water outlet nozzle 54 is communicated with the vehicle cooling system, an electric control housing 13A is also provided with an electric control water inlet nozzle 13Al that is communicated with an electric control water passage 13A2, and the vehicle cooling system is communicated with the electric control water inlet nozzle 13 Al of the electric control housing 13 A. As shown in Fig. 1 to Fig. 10, the vehicle according to the present disclosure includes the vehicle cooling system and the electric drive oil cooling system structure, where the oil cooling system structure includes a shared housing 1, and the electric control housing 13A, a heat exchanger 5, a coarse filter 2, an electronic oil pump 3, a fine filter 4, a motor housing 6, and a speed reducer case 11A are mounted on the shared housing 1. The heat exchanger 5 is provided with an exchanger water inlet 53, an exchanger water outlet nozzle 54, an exchanger oil inlet 51, and an exchanger oil outlet 52. The shared housing 1 is provided with a housing water outlet 14 and a housing water inlet passage 15 that are communicated with each other. An electric control water passage 13A2 is provided in the electric control housing 13A, the electric control housing 13A is provided with an electric control water outlet nozzle 13A3 and an electric control water inlet nozzle 13Al that are communicated with the electric control water passage 13A2, and a water passage sealing ring 13A4 is mounted on the electric control water outlet nozzle 13A3. The electric control water outlet nozzle 13 A3 is inserted in the housing water inlet passage 15, the housing water outlet 14 is aligned and communicated with the exchanger water inlet 53, the exchanger water outlet nozzle 54 is communicated with the vehicle cooling system, and the vehicle cooling system is communicated with the electric control water inlet nozzle 13Al of the electric control housing 13 A. The shared housing 1 is also provided with a housing intermediate oil passage 11, a housing oil outlet 12, an oil sump 15 A, and a housing oil inlet passage 10, and the motor housing 6 is provided with a motor oil return passage 62. The motor oil return passage 62, the oil sump 15A, the housing oil inlet passage 10, the coarse filter 2, the electronic oil pump 3, the housing intermediate oil passage 11, the fine filter 4, an oil pipe 14A, the housing oil outlet 12, and the exchanger oil inlet 51 are communicated in sequence. A cavity is formed between the shared housing 1 and the speed reducer case 11 A, a shaft system 12A for connecting and providing power is provided in the cavity, the oil pipe 14A is located in the cavity, the oil pipe 14A is also fixedly connected with an auxiliary pipe 14A2, and both the oil pipe 14A and the auxiliary pipe 14A2 are respectively provided with an oilpipe oil spray orifice 14Al for spraying lubricating oil to the shaft system 12A. A motor stator 9 is provided in the motor housing 6, a front end of the motor stator 9 is provided with a front oil spray ring 7, the front oil spray ring 7 is provided with a front spray orifice 71, the shared housing 1 is provided with a housing oil outlet 13 and a housing-to-stator oil passage 16, and the exchanger oil outlet 52, the housing oil outlet 13, the housing-to-stator oil passage 16, and the front spray orifice 71 are communicated in sequence. A rear end of the motor stator 9 is provided with a rear oil spray ring 8, the rear oil spray ring 8 is provided with a rear spray orifice 81, the motor housing 6 is provided with a motor intermediate oil passage 61, and the housing oil outlet 13, the motor intermediate oil passage 61, and the rear spray orifice 81 are communicated in sequence. The shared housing 1 is also provided with a housing-to-rotor oil passage 17, the speed reducer case 11A is provided with a case-to-rotor oil passage 11A1, a motor rotor 10A is provided in the motor stator 9, a shaft system 12A is mounted on the motor rotor 10A, the shaft system 12A is provided with an input-shaft-to-rotor oil passage 12A1, the motor rotor 10A is provided with a rotor shaft spray orifice 10A1, the housing oil outlet 13, the housing-to-rotor oil passage 17, the case-to-rotor oil passage 11A1, the rotor oil passage 12A1, and the rotor shaft spray orifice 10A1 are communicated in sequence. The electric drive oil cooling system structure, the electric drive assembly device, and the vehicle provided by the present disclosure are described in detail above. The specific embodiments are only explained to help the understanding of the method and core concept of the present disclosure. It should be pointed out that various improvements and modifications may be made by those ordinary skilled in the art without departing from the concept of the present disclosure. These improvements and modifications fall within the scope of the present disclosure. It should be readily understood that the terms "on", "over", and "above" in the present disclosure should be construed in the broadest sense, so that "on" not only means "directly on" but also includes "on" with intermediate features or layers in between, and "over" or "above" not only encompasses the meaning of "over" or "above" something but may also include "over" or "above" with no intermediate features or layers (i.e., directly on). Furthermore, spatial relative terms such as "below", "beneath", "lower", "above", "upper", and the like may be used herein for ease of description to describe a relationship between one element or feature and another element or feature as illustrated in the figures. Relative spatial terms are intended to include different orientations of devices in use or operation other than 5 those shown in the drawings. Apparatuses may have other orientations (rotate for 90 degrees or in another orientation), and relative spatial description terms used herein may also be interpreted accordingly. Finally, it should be noted that the above embodiments are only used for illustrating the 10 technical solutions of the present application rather than limiting the present application. Although the present application is described in detail with reference to the foregoing embodiments, it should be understood by those ordinary skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently substituted. However, these modifications or substitutions do not make the 15 essence of the corresponding technical solutions depart from the scope of the technical solutions of various embodiments of the present application.

Claims

1. An electric drive oil cooling system structure, comprising a shared housing (1), wherein an electric control housing (13A) and a heat exchanger (5) are mounted on the shared housing (1), the heat exchanger (5) is provided with an exchanger water inlet (53), the shared housing (1) is provided with a housing water outlet (14) and a housing water inlet passage (15) that are communicated with each other, an electric control water passage (13A2) is provided in the electric control housing (13A), the electric control housing (13A) is provided with an electric control water outlet nozzle (13 A3) that is communicated with the electric control water passage (13A2), the electric control water outlet nozzle (13A3) is inserted in the housing water inlet passage (15), and the housing water outlet (14) is aligned and communicated with the exchanger water inlet (53).

2. The electric drive oil cooling system structure according to claim 1, wherein a water passage sealing ring (13A4) is mounted on the electric control water outlet nozzle (13A3).

3. The electric drive oil cooling system structure according to claim 1, wherein a coarse filter (2), an electronic oil pump (3), and a motor housing (6) are also mounted on the shared housing (1), an oil sump (15A) and a housing oil inlet passage (10) are provided in the shared housing (1), the motor housing (6) is provided with a motor oil return passage (62), and the motor oil return passage (62), the oil sump (15A), the housing oil inlet passage (10), the coarse filter (2), and the electronic oil pump (3) are communicated in sequence.

4. The electric drive oil cooling system structure according to claim 3, wherein the shared housing (1) is also provided with a housing intermediate oil passage (11) and a housing oil outlet (12), the heat exchanger (5) is provided with an exchanger oil inlet (51), a fine filter (4) is also mounted on the shared housing (1), and the motor oil return passage (62), the oil sump (15A), the housing oil inlet passage (10), the coarse filter (2), the electronic oil pump (3), thehousing intermediate oil passage (11), the fine filter (4), the housing oil outlet (12), and the exchanger oil inlet (51) are communicated in sequence.

5. The electric drive oil cooling system structure according to claim 4, wherein an oil pipe (14A) is mounted between the fine filter (4) and the housing oil outlet (12), and the fine filter (4) and the housing oil outlet (12) are communicated through the oil pipe (14A).

6. The electric drive oil cooling system structure according to claim 5, wherein a speed reducer case (11 A) is also mounted on the shared housing (1), a cavity is formed between the shared housing (1) and the speed reducer case (HA), the oil pipe (14A) is disposed in the cavity, a shaft system (12A) for connecting and providing power is provided in the cavity, and the oil pipe (14A) is provided with an oil-pipe oil spray orifice(14Al) for spraying lubricating oil to the shaft system (12A).

7. The electric drive oil cooling system structure according to claim 6, wherein the oil pipe (14A) is also fixedly connected with an auxiliary pipe (14A2), and the auxiliary pipe (14A2) is also provided with an oil-pipe oil spray orifice (14A1) for spraying the lubricating oil to the shaft system (12A).

8. The electric drive oil cooling system structure according to claim 1, wherein the heat exchanger (5) is also provided with an exchanger oil outlet (52), the motor housing (6) is also mounted on the shared housing (1), a motor stator (9) is provided in the motor housing (6), a front end of the motor stator (9) is provided with a front oil spray ring (7), the front oil spray ring (7) is provided a front oil spray orifice (71), the shared housing (1) is provided with the housing oil outlet (13) and a housing-to-stator oil passage (16), and the exchanger oil outlet (52), the housing oil outlet (13), the housing-to-stator oil passage (16), and the front spray orifice (71) are communicated in sequence.

9. The electric drive oil cooling system structure according to claim 8, wherein a rear end of the motor stator (9) is provided with a rear oil spray ring (8), the rear oil spray ring (8) is provided with a rear spray orifice (81), the motor housing (6) is provided with the motor intermediate oil passage (61), and the housing oil outlet (13), the motor intermediate oil passage (61), and the rear spray orifice (81) are communicated in sequence.

10. The electric drive oil cooling system structure according to claim 1, wherein the shared housing (1) is also provided with a housing-to-rotor oil passage (17), the speed reducer case (11 A) and the motor housing (6) are also mounted on the shared housing (1), the speed reducer case (11 A) is provided with a case-to-rotor oil passage (11 Al), the motor stator (9) is provided in the motor housing (6), a motor rotor (10A) is provided in the motor stator (9), the cavity is formed between the shared housing (1) and the speed reducer case (HA), the shaft system (12A) for connecting and providing power is provided in the cavity, the shaft system (12A) is mounted on the motor rotor (10A), the shaft system (12A) is provided with an input-shaft-to-rotor oil passage (12A1), the motor rotor (10A) is provided with a rotor shaft spray orifice (10A1), the shared housing (1) is provided with the housing oil outlet (13), and the housing oil outlet (13), the housing-to-rotor oil passage (17), the case-to-rotor oil passage (11 Al), the rotor oil passage (12A1), and the rotor shaft spray orifice (10A1) are communicated in sequence.

11. An electric drive assembly device, comprising the electric drive oil cooling system structure according to any one of claims 1 to 10.

12. A vehicle, comprising a vehicle cooling system and the electric drive oil cooling system structure according to any one of claims 1 to 10, wherein the heat exchanger (5) is also provided with an exchanger water outlet nozzle (54), the exchanger water outlet nozzle (54) is communicated with the vehicle cooling system, the electric control housing (13A) is also provided with an electric control water inlet nozzle (13Al) communicated with an electric control water passage (13A2), and the vehicle cooling system is communicated with the electric control water inlet nozzle (13A1) of the electric control housing (13A).

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