Highly integrated hybrid electric drive water channel sealing structure and vehicle

Abstract

This application discloses a highly integrated hybrid electric drive water channel sealing structure and vehicle, relating to the field of hybrid electric drive water channels. It includes: a hybrid electric drive body, comprising a hybrid electric drive housing, an inverter brick assembly disposed on the top of the hybrid electric drive body, an inverter brick water pipe disposed inside the inverter brick assembly, a cooling water inlet assembly disposed on the side wall of the hybrid electric drive housing, one end of the cooling water inlet assembly penetrating into the inverter brick water pipe, the cooling water inlet assembly including an inlet pipe, an end face sealing ring, a first radial sealing ring, and a second radial sealing ring disposed on the outside of the inlet pipe, and three grooves disposed on the surface of the inlet pipe, with the end face sealing ring installed in the first groove of the three grooves. This invention can prevent cooling water leakage through the gap between the inverter brick water pipe and the inlet pipe, thus preventing inverter brick assembly failure, while also ensuring that the coolant does not chemically react with the hybrid electric drive housing.

Description

Technical Field

[0001] This application relates to the field of hybrid electric drive water systems, and more particularly to a highly integrated hybrid electric drive water system sealing structure and vehicle. Background Technology

[0002] With the rapid development of the new energy vehicle industry, hybrid electric drive systems are moving towards high integration, lightweight, small size and low cost. In order to achieve the goal of lightweighting, the hybrid electric drive body is usually made of magnesium alloy material with low density advantage to make the hybrid electric drive housing. In the hybrid electric drive system, in order to ensure the normal operation of core electronic components such as inverters, a corresponding water channel sealing structure is equipped to build a cooling circulation system to prevent the system from malfunctioning due to excessive temperature.

[0003] In existing hybrid electric drive water cooling structures, cooling water is typically introduced through a cooling water inlet assembly installed on the side wall of the hybrid electric drive housing. The cooling water then enters the water channels inside the housing and flows through the inverter assembly's cooling circuit, carrying away the heat generated during inverter operation through heat exchange. Finally, it is discharged through the cooling water outlet assembly. To ensure the sealing of the cooling water circulation, a basic rubber sealing ring is usually installed at the connection point between the cooling water inlet assembly and the hybrid electric drive housing or inverter water pipes. The sealing ring deforms due to the compressive force generated when the components are joined, thus achieving a preliminary seal in the cooling water circuit.

[0004] Current water channel sealing structures have many defects in practical high-integration environments. The chemical properties of magnesium alloy materials are less stable than those of aluminum alloy materials. The existing water inlet structure can easily cause the cooling water flowing through the inverter water channel to come into direct contact with the magnesium alloy hybrid electric drive housing and react chemically, thus leaving serious safety hazards. Secondly, the existing conventional sealing methods are relatively simple and unreliable. Poor sealing can easily lead to internal leakage of cooling water at the connection gaps, causing short circuit failure of the inverter assembly. Summary of the Invention

[0005] The purpose of this invention is to provide a highly integrated hybrid electric drive water channel sealing structure and vehicle, which solves the problems in existing hybrid electric drive water channel sealing structures, such as cooling water easily coming into contact with magnesium alloy shell and causing chemical reaction, single seal leading to easy leakage of internal cooling water and easy intrusion of external moisture and dust into inverter cavity causing inverter failure, as well as the problem that the sealing ring is easy to fall off during assembly and the water inlet component is inconvenient for later disassembly and maintenance.

[0006] This invention provides the following solution:

[0007] The first aspect of the present invention provides a highly integrated hybrid electric drive water channel sealing structure, comprising: a hybrid electric drive body, the hybrid electric drive body including a hybrid electric drive housing, an inverter brick assembly disposed on the top of the hybrid electric drive body, an inverter brick water pipe disposed inside the inverter brick assembly, a cooling water inlet assembly disposed on the side wall of the hybrid electric drive housing, and one end of the cooling water inlet assembly penetrating into the interior of the inverter brick water pipe;

[0008] The cooling water inlet assembly includes an inlet pipe, and the inlet pipe is provided with an end face sealing ring, a first radial sealing ring and a second radial sealing ring on its exterior.

[0009] The surface of the water inlet pipe is provided with three grooves. The end face sealing ring is installed in the first groove of the three grooves. The first radial sealing ring and the second radial sealing ring are respectively installed in the second and third grooves of the three grooves.

[0010] The cooling water inlet assembly is a detachable structure, and it is fixedly connected to the hybrid electric drive housing by a second fixing bolt.

[0011] Preferably, the end face sealing ring has anti-detachment protrusions distributed in the circumferential direction, and the end face sealing ring is embedded in the annular groove of the flange end face that mates with the water inlet pipe and the hybrid electric drive housing.

[0012] Preferably, the inner diameters of the first radial sealing ring and the second radial sealing ring respectively mate with the small diameters of the second and third grooves on the surface of the water inlet pipe, and the outer diameters of the first radial sealing ring and the second radial sealing ring both mate with the inner hole of the inverter brick water pipe.

[0013] Preferably, the first radial sealing ring and the second radial sealing ring have the same size.

[0014] Preferably, the first radial sealing ring is a primary sealing ring, and the second radial sealing ring is a secondary sealing ring.

[0015] Preferably, the inlet of the inverter brick water pipe is provided with a chamfer and a rounded corner, and the inverter brick water pipe is connected to the internal cooling circuit of the inverter brick assembly.

[0016] Preferably, the inverter brick assembly is fixedly connected to the hybrid electric drive housing by inverter brick fixing bolts, and a cooling water outlet pipe assembly is provided on the outer surface of the hybrid electric drive housing.

[0017] Preferably, the hybrid electric drive housing is provided with an electric drive top cover, which is fixedly connected to the hybrid electric drive housing by a first fixing bolt. The hybrid electric drive housing is made of die-cast magnesium alloy, and the cooling water inlet assembly and the cooling water outlet pipe assembly are both made of die-cast aluminum alloy.

[0018] Preferably, a low-voltage connector fixing bolt is provided between the electric drive top cover and the low-voltage terminal block on the top of the inverter brick assembly.

[0019] A second aspect of the present invention provides a vehicle, including a vehicle body, wherein the vehicle body is provided with a highly integrated hybrid electric drive water channel sealing structure as described in the first aspect of the present invention.

[0020] The above solution achieves the following beneficial technical effects:

[0021] This invention achieves physical isolation between the internal cooling water circuit and external moisture and dust by setting an inlet pipe and three grooves on the surface of the inlet pipe, installing an end face sealing ring in the first groove of the three grooves, and installing a first radial sealing ring and a second radial sealing ring in the second and third grooves of the three grooves, respectively. This ensures reliable sealing of the cooling water and prevents the cooling water from leaking through the gap between the inverter brick water pipe and the inlet pipe, which could lead to failure of the inverter brick assembly. Furthermore, the end face sealing rings prevent external moisture and dust from entering the inverter cavity of the hybrid electric drive body.

[0022] This invention inserts one end of the cooling water inlet assembly into the inverter brick water pipe, allowing the cooling water to flow directly into the inverter brick water pipe. This avoids direct contact and chemical reaction between the cooling water and the hybrid electric drive housing, thereby ensuring reliable sealing of the cooling water and safe operation of the hybrid electric drive body.

[0023] This invention sets the cooling water inlet assembly as a detachable structure and fixes it to the hybrid electric drive housing with a second fixing bolt. This not only prevents the sealing rings from falling off during assembly, but also facilitates the independent disassembly and assembly of the cooling water inlet assembly and subsequent maintenance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the hybrid electric drive structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the water pipe fittings of the present invention;

[0026] Figure 3 This is a schematic diagram of the water pipe installation position according to the present invention;

[0027] Figure 4 This is a schematic diagram of the water pipe of the present invention.

[0028] Among them, 100 is the hybrid electric drive body; 101 is the hybrid electric drive housing; 200 is the cooling water inlet assembly; 201 is the water inlet pipe; 202 is the end face sealing ring; 203 is the first radial sealing ring; 204 is the second radial sealing ring; 300 is the cooling water outlet pipe assembly; 400 is the inverter brick assembly; 401 is the inverter brick water pipe; 500 is the inverter brick fixing bolt; 600 is the electric drive top cover; 700 is the first fixing bolt; 800 is the low-voltage connector fixing bolt; and 900 is the second fixing bolt. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see the appendix Figure 1 To be continued Figure 4 This invention provides a highly integrated hybrid electric drive water channel sealing structure, comprising: a hybrid electric drive body 100, the hybrid electric drive body 100 including a hybrid electric drive housing 101, an inverter brick assembly 400 disposed on the top of the hybrid electric drive body 100, an inverter brick water pipe 401 disposed inside the inverter brick assembly 400, and a cooling water inlet assembly 200 disposed on the side wall of the hybrid electric drive housing 101, one end of the cooling water inlet assembly 200 penetrating into the interior of the inverter brick water pipe 401.

[0031] Specifically, addressing the safety hazard inherent in existing technologies where cooling water easily comes into direct contact with the magnesium alloy hybrid electric drive housing 101, leading to a chemical reaction, magnesium alloy, despite its excellent low density and lightweight advantages, has a low standard electrode potential and is chemically highly reactive. In traditional structures, cooling water (typically a mixture of ethylene glycol and water, potentially slightly acidic or alkaline, or containing free ions) is highly susceptible to electrochemical corrosion and even hydrogen gas generation when flowing through the internal water channels of the magnesium alloy housing. This results in pitting and porosity on the inner walls of the water channels, ultimately causing severe coolant leakage. This invention addresses this by directly inserting one end of the cooling water inlet assembly 200 into the inverter brick water pipe 401 inside the inverter brick assembly 400, allowing cooling water to flow directly into the inverter brick water pipe 401. During actual operation, cooling water is introduced through the cooling water inlet assembly 200 and directly connected to the cooling circuit inside the inverter brick assembly 400, ensuring completely closed-loop circulation of the cooling water within the assembly.

[0032] By inserting one end of the cooling water inlet assembly 200 into the inverter brick water pipe 401, the cooling water is prevented from directly contacting the hybrid electric drive housing 101, which is prone to reaction, thus preventing chemical reactions. This not only eliminates safety hazards but also extends the service life of internal components, ensuring reliable sealing of the cooling water and safe operation of the hybrid electric drive body 100.

[0033] The cooling water inlet assembly 200 includes an inlet pipe 201. An end face sealing ring 202, a first radial sealing ring 203, and a second radial sealing ring 204 are provided on the outside of the inlet pipe 201. Three grooves are provided on the surface of the inlet pipe 201. The end face sealing ring 202 is installed in the first groove of the three grooves. The first radial sealing ring 203 and the second radial sealing ring 204 are respectively installed in the second and third grooves of the three grooves. The inner diameters of the first radial sealing ring 203 and the second radial sealing ring 204 mate with the smaller diameters of the second and third grooves on the surface of the inlet pipe 201, respectively. The outer diameters of the first radial sealing ring 203 and the second radial sealing ring 204 mate with the inner hole of the inverter brick water pipe 401. The first radial sealing ring 203 and the second radial sealing ring 204 have the same size.

[0034] Specifically, to address the problems of existing conventional sealing methods being singular and unreliable, prone to internal leakage of cooling water and intrusion of external dust due to poor sealing, this invention, during assembly, installs the end face sealing ring 202 in the first groove, and the first radial sealing ring 203 and the second radial sealing ring 204 in the second and third grooves, respectively. In actual operation, the outer diameters of the first radial sealing ring 203 and the second radial sealing ring 204 are tightly fitted to the inner hole of the inverter brick water pipe 401, forming a pre-set interference fit. Sufficient radial clamping force is generated by the elastic deformation of the rubber material, thus forming a highly efficient double-radial seal. Even if minor relative vibrations occur in the pipeline due to vehicle bumps, or if the first sealing ring undergoes microscopic aging due to long-term use, the second sealing ring still provides reliable redundancy protection, preventing internal leakage of cooling water through the gap between the inverter brick water pipe 401 and the inlet pipe 201, thus avoiding short-circuit failure of the inverter brick assembly 400 due to water leakage.

[0035] The end face sealing ring 202 can form an end face seal, preventing moisture and dust from the external environment from entering the inverter cavity of the hybrid electric drive body 100, realizing physical isolation between the internal cooling water circuit and the external environment, and improving the service life and overall reliability of the hybrid electric drive body 100 and the inverter brick assembly 400.

[0036] The end face sealing ring 202 has anti-detachment protrusions distributed in the circumferential direction. The end face sealing ring 202 is embedded in the annular groove of the flange end face of the water inlet pipe 201 and the hybrid electric drive housing 101. The first radial sealing ring 203 is the first sealing ring, and the second radial sealing ring 204 is the second sealing ring.

[0037] Specifically, during assembly and structural connection, the end face sealing ring 202, with its circumferentially distributed anti-detachment protrusions, is embedded into the annular groove on the flange end face where the water inlet pipe 201 mates with the hybrid electric drive housing 101. This prevents detachment during complex assembly and ensures the ring is tightly pressed between the flange ends to isolate it from water and dust. The anti-detachment protrusions are evenly distributed at equal intervals on the outer circumferential surface of the end face sealing ring 202, and there are multiple protrusions. When the end face sealing ring 202 is pressed into the annular groove on the flange end face, the anti-detachment protrusions create slight local interference with the groove wall, achieving pre-fixation and preventing the sealing ring from twisting or turning within the groove. When the second fixing bolt 900 is tightened to the rated torque, the external protection level of the hybrid electric drive body 100 reaches IP67 or even IP68, ensuring a dry working environment inside the inverter cavity even during high-pressure car washes or deep wading conditions.

[0038] When the inlet pipe 201 is inserted into the inverter brick water pipe 401, the first radial sealing ring 203 serves as the first sealing ring. The mating diameter of the first radial sealing ring 203 is slightly smaller, mainly playing a good installation guiding role, ensuring that the front end of the inlet pipe 201 can smoothly slide into the inner hole of the inverter brick water pipe 401 without jamming or curling. The second radial sealing ring 204 serves as the second sealing ring. When it is inserted to this position, the mating diameter is relatively larger, thereby achieving precise positioning of the pipe fitting during the insertion process, which not only ensures the convenience of assembly, but also ensures the stability of the multi-seal structure.

[0039] The cooling water inlet assembly 200 is a detachable structure and is fixedly connected to the hybrid electric drive housing 101 by the second fixing bolt 900.

[0040] Specifically, addressing the technical shortcomings of existing rigid water inlet component structures, which often employ integral die casting or permanent adhesive bonding and welding, making subsequent maintenance difficult in case of water blockage or aging of sealing rings, this invention optimizes the design of the cooling water inlet component 200 into a detachable structure. After the water inlet pipe 201 and each sealing component are positioned and inserted, the cooling water inlet component 200 can be securely fastened to the side wall of the hybrid electric drive housing 101 using the second fixing bolt 900. The method of fixing with the second fixing bolt 900 not only provides a stable locking force for component docking, preventing the sealing rings from falling off or shifting and deforming during assembly docking and subsequent vibration, but also simplifies the installation and disassembly process. When it is necessary to inspect or replace internal parts later, maintenance personnel only need to unscrew the bolts to pull out the entire cooling water inlet component 200, which facilitates the independent disassembly and maintenance of the cooling water inlet component 200 and reduces the maintenance cost of the entire vehicle's life cycle.

[0041] The inlet of the inverter brick water pipe 401 is provided with chamfers and rounded corners. The inverter brick water pipe 401 is connected to the internal cooling circuit of the inverter brick assembly 400. The inverter brick assembly 400 is fixedly connected to the hybrid electric drive housing 101 by the inverter brick fixing bolts 500. The outer surface of the hybrid electric drive body 100 is provided with a cooling water outlet pipe assembly 300.

[0042] Specifically, during the installation of the cooling water inlet assembly 200, the inlet of the inverter brick water pipe 401 features a specially designed chamfer and rounded corner. The chamfer design further facilitates installation guidance, making the insertion of the inlet pipe 201 smoother. The rounded corner design eliminates sharp edges, preventing scratches on the first radial sealing ring 203 and the second radial sealing ring 204 during insertion, ensuring the integrity of the rubber sealing rings. When cooling water flows into the internal cooling circuit of the inverter brick assembly 400 through the cooling water inlet assembly 200 and the inverter brick water pipe 401, it effectively removes the heat generated by the system operation. The heated cooling water, having completed heat exchange, is finally discharged through the cooling water outlet pipe assembly 300 located on the outer surface of the hybrid electric drive body 100, thus forming a closed-loop, high-efficiency heat dissipation channel and ensuring the stable operation of the entire inverter brick assembly 400.

[0043] The hybrid electric drive housing 101 is provided with an electric drive top cover 600. The electric drive top cover 600 is fixedly connected to the hybrid electric drive housing 101 by a first fixing bolt 700. A low-voltage connector fixing bolt 800 is provided between the electric drive top cover 600 and the low-voltage terminal block on the top of the inverter brick assembly 400. The hybrid electric drive housing 101 is made of die-cast magnesium alloy, and the cooling water inlet assembly 200 and the cooling water outlet pipe assembly 300 are both made of die-cast aluminum alloy.

[0044] Specifically, the hybrid electric drive housing 101 of the hybrid electric drive body 100 is made of die-cast magnesium alloy, which has the advantage of low density, reducing the weight of the equipment. However, existing magnesium alloys are not chemically stable enough. This invention utilizes a cooling water inlet assembly 200 and a cooling water outlet pipe assembly 300, both made of die-cast aluminum alloy, as the main carriers of the water medium. Because a dense oxide film naturally forms on the surface of aluminum alloy, it has excellent corrosion resistance to coolant. By combining the weight reduction of the magnesium housing with the water-carrying aluminum pipes, the risk of corrosion and reaction caused by direct contact between cooling water and die-cast magnesium alloy is cleverly avoided. Simultaneously, the electric drive top cover 600 is fixed to the top of the hybrid electric drive housing 101 by the first fixing bolt 700, and the low-voltage connector fixing bolt 800 secures the low-voltage terminal block. Through the coordinated action of multiple components, a highly integrated and highly protected integrated chassis is formed. While achieving the weight reduction goal, it ensures safe isolation of water and electricity in a highly integrated environment, enhancing the overall reliability of the system.

[0045] A vehicle includes a vehicle body, on which a highly integrated hybrid electric drive water channel sealing structure is provided.

[0046] Specifically, the vehicle can be a battery electric vehicle (BEV), a plug-in hybrid electric vehicle (PHEV), or a range-extended hybrid electric vehicle (REEV), among other new energy vehicles. Within the vehicle architecture, the hybrid electric drive water channel sealing structure, as a crucial component of the vehicle's core powertrain thermal management system, is typically located in the front engine compartment or rear drive axle area.

[0047] When a vehicle is under heavy load conditions such as high-speed driving, frequent starts and accelerations, or prolonged uphill climbing, the power modules within the inverter assembly 400 will experience significant heat loss. At this time, the electronic water pump in the vehicle's thermal management system will pump low-temperature coolant into the cooling water inlet assembly 200. The dual radial and end-face sealing structure design of this invention, when the vehicle is in harsh driving environments such as bumpy roads, flooded roads, or dusty conditions, can both rely on the physical penetration isolation mechanism of the inlet pipe 201 to prevent coolant leakage into the hybrid electric drive housing 101, thus preventing corrosion of magnesium alloy components or high-voltage short circuits, and effectively prevent mud, sand, and moisture from entering the inverter cavity of the electric drive system through the end-face seal.

[0048] Furthermore, the highly integrated hybrid electric drive water channel sealing structure of this invention not only provides the vehicle with excellent electric drive waterproof and dustproof performance, but also benefits from the overall vehicle weight reduction brought by the magnesium alloy shell, effectively reducing the vehicle's weight and thus significantly improving the vehicle's range while reducing energy and fuel consumption per 100 kilometers. Simultaneously, the detachable water inlet component design of this structure further enhances the convenience of thermal management pipeline maintenance and parts replacement at after-sales service stations, shortening repair time and reducing the vehicle's total life-cycle maintenance costs, providing users with a safer, more reliable, and economical driving experience.

[0049] Working principle: During assembly and structural connection, the end face sealing ring 202 is first installed in the first groove on the surface of the water inlet pipe 201, and the anti-detachment protrusions distributed in the circumferential direction of the end face sealing ring 202 are embedded into the flange end face annular groove of the water inlet pipe 201 that mates with the hybrid electric drive housing 101 to prevent it from falling off during assembly. Then, the first radial sealing ring 203 and the second radial sealing ring 204 are respectively installed in the second and third grooves on the surface of the water inlet pipe 201.

[0050] One end of the water inlet pipe 201 of the cooling water inlet assembly 200 is inserted into the inverter brick water pipe 401 inside the inverter brick assembly 400. During the insertion process, the diameter of the water inlet pipe 201 and the inverter brick water pipe 401 is slightly smaller at the first radial sealing ring 203 of the first stage, which serves as a guide for installation. The chamfer and rounded corners set at the inlet of the inverter brick water pipe 401 further facilitate the guiding installation and effectively prevent scratching the sealing ring. When it is inserted to the second radial sealing ring 204, the relatively large diameter of the mating pipe achieves precise positioning. After positioning, the detachable cooling water inlet assembly 200 is fastened to the side wall of the hybrid electric drive housing 101 by the second fixing bolt 900.

[0051] During the operation of the hybrid electric drive body 100, cooling water is introduced through the cooling water inlet assembly 200. Since the water inlet pipe 201 directly penetrates into the inverter brick water pipe 401 and is directly connected to the cooling circuit inside the inverter brick assembly 400, the cooling water can flow in a closed loop inside the cooling water inlet assembly 200 and the inverter brick water pipe 401, which is made of die-cast aluminum alloy. This avoids direct contact between the cooling water and the magnesium alloy hybrid electric drive housing 101 from a physical structure perspective, thereby preventing chemical reactions and extending the service life of the components.

[0052] The outer diameters of the first radial sealing ring 203 and the second radial sealing ring 204 are tightly fitted with the inner hole of the inverter brick water pipe 401, forming a double radial seal, which prevents the cooling water from leaking internally through the gap between the inverter brick water pipe 401 and the water inlet pipe 201; the outer end face sealing ring 202 is pressed between the water inlet pipe 201 and the flange end of the hybrid electric drive housing 101, forming a reliable end face seal, which isolates moisture and dust from the external environment and prevents moisture and dust from entering the inverter cavity of the hybrid electric drive body 100.

[0053] The cooling water that has completed heat exchange is discharged through the cooling water outlet pipe assembly 300 on the outer surface, thereby ensuring the safe isolation of water and electricity in a highly integrated environment, while ensuring the stable and reliable operation of the entire inverter brick assembly 400 and the hybrid electric drive system.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highly integrated hybrid electric-driven waterway sealing structure, characterized in that, include: A hybrid electric drive body (100) includes a hybrid electric drive housing (101), an inverter brick assembly (400) is provided on the top of the hybrid electric drive body (100), an inverter brick water pipe (401) is provided inside the inverter brick assembly (400), and a cooling water inlet assembly (200) is provided on the side wall of the hybrid electric drive housing (101). The characteristic is that one end of the cooling water inlet assembly (200) extends into the interior of the inverter brick water pipe (401). The cooling water inlet assembly (200) includes an inlet pipe (201), and the inlet pipe (201) is provided with an end face sealing ring (202), a first radial sealing ring (203) and a second radial sealing ring (204) on the outside. The surface of the water inlet pipe (201) is provided with three grooves. The end face sealing ring (202) is installed in the first groove of the three grooves. The first radial sealing ring (203) and the second radial sealing ring (204) are respectively installed in the second and third grooves of the three grooves. The cooling water inlet assembly (200) is a detachable structure, and the cooling water inlet assembly (200) is fixedly connected to the hybrid electric drive housing (101) by the second fixing bolt (900).

2. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The end face sealing ring (202) has anti-detachment protrusions distributed in the circumferential direction. The end face sealing ring (202) is embedded in the annular groove of the flange end face that mates with the water inlet pipe (201) and the hybrid electric drive housing (101).

3. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The inner diameters of the first radial sealing ring (203) and the second radial sealing ring (204) respectively mate with the small diameters of the second and third grooves on the surface of the water inlet pipe (201), and the outer diameters of the first radial sealing ring (203) and the second radial sealing ring (204) both mate with the inner hole of the inverter brick water pipe (401).

4. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The first radial sealing ring (203) and the second radial sealing ring (204) have the same size and specifications.

5. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The first radial sealing ring (203) is the first sealing ring, and the second radial sealing ring (204) is the second sealing ring.

6. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The inlet of the inverter brick water pipe (401) is provided with a chamfer and a rounded corner, and the inverter brick water pipe (401) is connected to the internal cooling circuit of the inverter brick assembly (400).

7. The highly integrated hybrid electric-driven water channel sealing structure according to claim 1, characterized in that, The inverter brick assembly (400) is fixedly connected to the hybrid electric drive housing (101) by inverter brick fixing bolts (500), and a cooling water outlet pipe assembly (300) is provided on the outer surface of the hybrid electric drive body (100).

8. The highly integrated hybrid electric-driven water channel sealing structure according to claim 7, characterized in that, The hybrid electric drive housing (101) is provided with an electric drive top cover (600) on top. The electric drive top cover (600) is fixedly connected to the hybrid electric drive housing (101) by a first fixing bolt (700). The hybrid electric drive housing (101) is made of die-cast magnesium alloy. The cooling water inlet assembly (200) and the cooling water outlet pipe assembly (300) are both made of die-cast aluminum alloy.

9. The highly integrated hybrid electric-driven water channel sealing structure according to claim 8, characterized in that, A low-voltage connector fixing bolt (800) is provided between the electric drive top cover (600) and the low-voltage terminal block on the top of the inverter brick assembly (400).

10. A vehicle, characterized in that, The vehicle body includes a highly integrated hybrid electric drive water channel sealing structure as described in any one of claims 1-9.

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