Integrated electric oil pump

Abstract

The invention belongs to an integrated electric oil pump in the technical field of active hydraulic suspension systems. The chamber I (14) is used for placing a high-pressure control module of the controller assembly (2); the chamber II (15) is used for placing a low-pressure control module of the controller assembly (2); the main shell (3) is connected with one middle shell assembly (6) to form a third cavity (16), the main shell (3) is connected with the other middle shell assembly (6) to form a fourth cavity (17), the motor stator assembly (4) and the motor rotor assembly (5) are placed in the third cavity (16) and the fourth cavity (17) respectively, one middle shell assembly (6) is connected with the pump cover (13) to form a fifth cavity (18), and the motor stator assembly (4) and the motor rotor assembly (5) are placed in the fifth cavity (18). And the other middle shell assembly (6) is connected with the pump cover (13) to form a sixth chamber (19). The integrated electric oil pump is simple in structure, integration of the electric oil pump can be achieved, the size of the electric oil pump is reduced, the structure of the electric oil pump is simplified, and the cost of the electric oil pump is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of active hydraulic suspension systems, and more specifically, relates to an integrated electric oil pump. Background Art

[0002] The active hydraulic suspension system is a product of the rapid development of new energy vehicles in recent years. The active hydraulic suspension system has fast response, large adjustment range, high intelligence level, and can bring excellent driving experience and safety guarantee to the vehicle. The electric oil pump provides large flow and high pressure hydraulic oil for the active hydraulic suspension system, thereby realizing various functions of the active hydraulic suspension system.

[0003] The current electric oil pumps are generally independent structures. The advantage of independent structures is that they can be arranged in a dispersed manner, but dispersed arrangements will take up a large layout space, and compact vehicle models are difficult to adapt. The electric oil pump with an independent structure has an independent design of the motor housing, controller assembly, and some structural parts and seals. Two sets of the above components are required, which will increase the overall cost of the electric oil pump. The independently designed electric oil pump controller also requires an independent power module and control module, which will increase the cost and the operating load of the domain control of the active hydraulic suspension system.

[0004] In the prior art, there is a technology named "Monotube active suspension system with different system layouts for controlling pump flow distribution" and the publication (announcement) number is "CN107116983A", which discloses a hydraulic actuator circuit for use with a first shock absorber and a second shock absorber, wherein the first shock absorber and the second shock absorber may each include a piston arranged in a housing. The piston helps define an upper working chamber and a lower working chamber. The circuit may have a motor, a first pump, the first pump being driven by the motor and associated with the first shock absorber and the motor. A second pump driven by the motor may be associated with the second shock absorber. A first accumulator is connected to both the first pump and the second pump. A first conversion valve may assist in controlling the flow of fluid into the chamber of the first shock absorber. A second conversion valve may assist in controlling the flow of fluid into the chamber of the second shock absorber.

[0005] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the invention

[0006] The technical problem to be solved by the present invention is: in view of the deficiencies in the prior art, to provide an integrated electric oil pump with a simple structure, capable of realizing the integration of the electric oil pump, reducing the volume of the electric oil pump, simplifying the electric oil pump structure, and reducing the cost of the electric oil pump.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0008] The present invention is an integrated electric oil pump, wherein the main housing is divided into four chambers, wherein the main housing is connected to a controller cover plate 1 to form chamber one, wherein chamber one is used to place a high-pressure control module of a controller assembly; the main housing is connected to a controller cover plate to form chamber two, wherein chamber two is used to place a low-pressure control module of a controller assembly; the main housing is connected to an intermediate housing assembly to form chamber three, wherein the main housing is connected to another intermediate housing assembly to form chamber four, wherein a motor stator assembly and a motor rotor assembly are placed in chamber three and chamber four respectively, wherein an intermediate housing assembly is connected to a pump cover to form chamber five, wherein another intermediate housing assembly is connected to a pump cover to form chamber six, wherein a busbar, a bushing, a sensor, a crescent plate, a pump head gear, and a pump head gear ring are arranged in chamber five and chamber six respectively.

[0009] The controller assembly is connected to the domain controller of the suspension system, communicates via CAN, and transmits signals and data; the controller assembly is connected to the battery module, and obtains the required high-voltage electric energy from the battery module; the controller assembly is connected to the motor stator assembly, and inputs the electric energy into the motor stator assembly in the form of current and voltage.

[0010] The motor stator assembly is configured as a structure capable of generating a magnetic field to drive the motor rotor assembly to rotate; the motor rotor assembly in chamber three is configured as a structure capable of driving the corresponding pump head gear and pump head gear ring to rotate in chamber five to complete oil suction and oil discharge; the motor rotor assembly in chamber four is configured as a structure capable of driving the corresponding pump head gear and pump head gear ring to rotate in chamber six to complete oil suction and oil discharge.

[0011] A plurality of threaded holes are arranged on the periphery of the main shell, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; two through holes are arranged on the end of the pump cover to connect the hydraulic circuit of the suspension system, one hole is used to absorb oil, and the other hole is used to discharge oil; the oil suction port and the oil discharge port of the pump cover are both provided with bypass flow channels, and the bypass flow channels flow to the sensor; the sensor detects the oil pressure and oil temperature, and feeds back the signal to the controller assembly; when operating in the suspension system, the two motor pumps are respectively in independent suspension systems and do not interfere with each other.

[0012] Alternatively, the main shell is divided into six chambers, the main shell and the rear cover of the low-pressure controller assembly form chamber five and chamber two, and the low-pressure controller assembly is placed in chamber five and chamber two respectively; the main shell and an intermediate shell assembly form chamber three, the main shell and another intermediate shell assembly form chamber four, the motor stator assembly and the motor rotor assembly are placed in chamber three, and the motor stator assembly and the motor rotor assembly are placed in chamber four; an intermediate shell assembly and the pump cover form chamber one, the other intermediate shell assembly and the pump cover form chamber six, and the gear pump assembly and the sensor are placed in chamber one and chamber six respectively.

[0013] The low-voltage controller assembly is connected to the domain controller of the suspension system, communicates via CAN, and transmits signals and data; the high-voltage controller assembly is connected to the battery module, and obtains the required high-voltage electric energy from the battery module; the high-voltage controller assembly is connected to the motor stator assembly, and inputs the electric energy into the motor stator assembly in the form of current and voltage, and the motor stator assembly is configured to be a structure capable of generating a magnetic field to drive the motor rotor assembly to rotate; the motor rotor assembly in chamber three is configured to be a structure capable of driving the pump head gear and the pump head gear ring to rotate in chamber one to complete oil suction and oil discharge; the motor rotor assembly in chamber four is configured to be a structure capable of driving the pump head gear and the pump head gear ring to rotate in chamber six to complete oil suction and oil discharge.

[0014] A plurality of threaded holes are arranged on the periphery of the main shell, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; each pump cover end has two through holes for connecting the hydraulic circuit of the suspension system, one hole for oil suction and one hole for oil discharge; each pump cover has a bypass flow channel at the oil suction port and the oil discharge port, and the bypass flow channel flows to the sensor; the sensor detects the oil pressure and oil temperature, and feeds back the signal to the low-pressure controller assembly; when operating in the suspension system, the two motor pumps are in independent suspension systems respectively and do not interfere with each other.

[0015] Alternatively, the main shell is divided into seven chambers, the main shell and the intermediate shell assembly form chamber three and chamber four, and the gear pump assembly is placed in chamber three and chamber four respectively; the intermediate shell assembly and the motor shell assembly form chamber two and chamber six, and the motor stator assembly and the motor rotor assembly are placed in chamber two and chamber six respectively; the motor shell assembly and the low-pressure controller assembly cover form chamber one and chamber five, and the low-pressure controller assembly is placed in chamber one and chamber five respectively; the high-pressure controller assembly shell is connected to the motor shell assembly by bolts, and the high-pressure controller shell assembly and the high-pressure controller assembly cover form chamber seven, and the high-pressure controller assembly is placed in chamber seven.

[0016] The low-voltage controller assembly is connected to the domain controller of the suspension system, communicates via CAN, and transmits signals and data; the high-voltage controller assembly is connected to the battery module of the system, and obtains the required high-voltage electric energy from the battery module; the high-voltage controller assembly is connected to the motor stator assembly, and inputs the electric energy into the motor stator assembly in the form of current and voltage. The motor stator assembly is configured to be a structure capable of generating a magnetic field to drive the motor rotor assembly to rotate, the motor rotor assembly in chamber two is configured to be a structure capable of driving the gear pump assembly to rotate in chamber three to complete oil suction and oil discharge, and the motor rotor assembly in chamber six is ​​configured to be a structure capable of driving the gear pump assembly to rotate in chamber four to complete oil suction and oil discharge.

[0017] The outer periphery of the main housing is provided with a plurality of threaded holes, and bolts are passed through the threaded holes to connect the intermediate housing assemblies and the motor housing assemblies on both sides; four oil ports are opened on the main housing, one oil suction port and one oil discharge port are connected to the gear pump assembly on one side, and another oil suction port and another oil discharge port are connected to the gear pump assembly on the other side, and the two sides do not interfere with each other and are independently supplied with oil; the four oil passages of the main housing are bypassed with four sensors to detect the pressure and temperature of the oil circuit and feed back the signal to the low-pressure controller assembly.

[0018] The technical solution of the present invention is adopted, and the working principle and beneficial effects are as follows:

[0019] The integrated electric oil pump described in the present invention can control two sets of motor pumps with one set of controller, which has a simpler structure, lower cost and higher space utilization rate than the prior art. The integrated installation of two sets of motors and two sets of oil pumps can be completed with one set of main housing, which simplifies the housing structure, reduces product cost and improves the feasibility of the layout of the electric oil pump product compared to the prior art. Although the structure is highly integrated, during use, the two sets of motors and two sets of oil pumps can work independently and will not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 This is a schematic structural diagram of Embodiment 1 of the integrated electric oil pump of the present invention;

[0022] Figure 2 This is a schematic structural diagram of Embodiment 1 of the integrated electric oil pump of the present invention;

[0023] Figure 3 This is a schematic structural diagram of Embodiment 1 of the integrated electric oil pump of the present invention;

[0024] Figure 4 This is a schematic structural diagram of Embodiment 2 of the integrated electric oil pump of the present invention;

[0025] Figure 5 This is a schematic structural diagram of Embodiment 2 of the integrated electric oil pump of the present invention;

[0026] Figure 6 This is a schematic structural diagram of Embodiment 2 of the integrated electric oil pump of the present invention;

[0027] Figure 7 This is a schematic structural diagram of Embodiment 2 of the integrated electric oil pump of the present invention;

[0028] Figure 8This is a schematic structural diagram of Embodiment 3 of the integrated electric oil pump of the present invention;

[0029] Fig. 9 This is a schematic structural diagram of Embodiment 3 of the integrated electric oil pump of the present invention;

[0030] Fig.10 This is a schematic structural diagram of Embodiment 3 of the integrated electric oil pump of the present invention;

[0031] Fig.11 This is a schematic structural diagram of Embodiment 3 of the integrated electric oil pump of the present invention;

[0032] The markings in the attached drawings are: 1, controller cover; 2, controller assembly; 3, main housing; 4, motor stator assembly; 5, motor rotor assembly; 6, intermediate housing assembly; 7, busbar; 8, bushing; 9, sensor; 10, crescent plate; 11, pump head gear; 12, pump head gear ring; 13, pump cover; 14, chamber one; 15, chamber two; 16, chamber three; 17, chamber four; 18, chamber five; 19, chamber six; 20, bolt mounting hole; 21, bolt Mounting hole; 22, left pump suction port; 23, right pump suction port; 24, left pump discharge port; 25, right pump discharge port; 26, chamber seven; 27, low-pressure controller assembly rear cover; 28, low-pressure controller assembly; 29, gear pump assembly; 31, high-pressure controller assembly; 32, motor housing assembly; 33, high-pressure controller assembly housing; 34, high-pressure controller assembly cover; 35, low-pressure controller assembly cover; 36, one-way valve; 37, bolt mounting hole. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various components involved, the function and working principle of each part, etc., through the description of the embodiments with reference to the accompanying drawings:

[0034] As attached Figure 1 -Attached Figure 3As shown, as embodiment 1, the present invention is an integrated electric oil pump, and the main housing 3 provides support for the entire product and is connected to external components through the main housing. The main housing 3 is divided into four chambers. The main housing 3 is connected with the controller cover 1 to form chamber 1 14. Chamber 1 14 is used to place the high-pressure control module of the controller assembly 2. The main housing 3 is connected with the controller cover 1 to form chamber 2 15. Chamber 2 15 is used to place the low-pressure control module of the controller assembly 2. The main housing 3 is connected with an intermediate housing assembly 6 to form chamber 3 16. The main housing 3 is connected with another intermediate housing assembly 6 to form chamber 4 17. The motor stator assembly 4 and the motor rotor assembly 5 are placed in chamber 3 16 and chamber 4 17 respectively. One intermediate housing assembly 6 is connected with the pump cover 13 to form chamber 5 18. Another intermediate housing assembly 6 is connected with the pump cover 13 to form chamber 6 19. The confluence plate 7, bushing 8, sensor 9, crescent plate 10, pump head gear 11, and pump head gear ring 12 are arranged in chamber 5 18 and chamber 6 19 respectively. The above structure proposes an improved technical solution to address the deficiencies in the prior art. When setting up the structure, a set of controllers can be used to control two sets of motor pumps. Compared with the prior art, the structure is simpler, the cost is lower, and the space utilization rate is higher. Using a set of main housings, the integrated installation of two sets of motors and two sets of oil pumps can be completed. Compared with the prior art, the structure of the housing is effectively simplified, the cost of the entire product is reduced, and the layout feasibility of the electric oil pump product is improved. Although the structure is highly integrated, during use, the two sets of motors and two sets of oil pumps can work independently and will not affect each other. The integrated electric oil pump described in the present invention has a simple structure, can realize the integration of the electric oil pump, reduce the volume of the electric oil pump, simplify the structure of the electric oil pump, and reduce the cost of the electric oil pump.

[0035] The controller assembly 2 is connected to the domain controller of the suspension system, communicates via CAN, and transmits signals and data; the controller assembly 2 is connected to the battery module, and obtains the required high-voltage electric energy from the battery module; the controller assembly 2 is connected to the motor stator assembly 4, and inputs the electric energy in the form of current and voltage to the motor stator assembly 4. The above structure can reliably realize the connection between the controller and the electric oil pump, and realize the precise control of the electric oil pump when it is working.

[0036] The motor stator assembly 4 is configured as a structure capable of generating a magnetic field to drive the motor rotor assembly 5 to rotate; the motor rotor assembly 5 in chamber three 16 is configured as a structure capable of driving the corresponding pump head gear 11 and the pump head gear ring 12 to rotate in chamber five 18 to complete oil suction and oil discharge; the motor rotor assembly 5 in chamber four 17 is configured as a structure capable of driving the corresponding pump head gear 11 and the pump head gear ring 12 to rotate in chamber six 19 to complete oil suction and oil discharge.

[0037] A plurality of threaded holes are arranged on the periphery of the main housing 3, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; two through holes are arranged at the end of the pump cover 13 to connect the hydraulic circuit of the suspension system, one hole for oil suction and the other hole for oil discharge; both the oil suction port and the oil discharge port of the pump cover 13 have bypass flow channels, and the bypass flow channels flow to the sensor 9; the sensor 9 detects the oil pressure and oil temperature, and feeds back the signal to the controller assembly 2; when operating in the suspension system, the two motor pumps are in independent suspension systems respectively and do not interfere with each other.

[0038] Alternatively, as embodiment 2, the main housing 3 provides support for the entire product and is connected to external components through the main housing 3. The main housing 3 is divided into six chambers. The main housing 3 and the low-pressure controller assembly rear cover 27 form chamber five 18 and chamber two 15. The low-pressure controller assembly 28 is placed in chamber five 18 and chamber two 15 respectively; the main housing 3 and an intermediate housing assembly 6 form chamber three 16, the main housing 3 and another intermediate housing assembly 6 form chamber four 17, the motor stator assembly 4 and the motor rotor assembly 5 are placed in chamber three 16, and the motor stator assembly 4 and the motor rotor assembly 5 are placed in chamber four 17; an intermediate housing assembly 6 and the pump cover 13 form chamber one 14, and another intermediate housing assembly 6 and the pump cover 13 form chamber six 19, and the gear pump assembly 29 and the sensor 9 are placed in chamber one 14 and chamber six 19 respectively.

[0039] The low-voltage controller assembly 28 is connected to the domain controller of the suspension system, and communicates through CAN to transmit signals and data; the high-voltage controller assembly 31 is connected to the battery module to obtain the required high-voltage electric energy from the battery module; the high-voltage controller assembly 31 is connected to the motor stator assembly 4, and inputs the electric energy to the motor stator assembly 5 in the form of current and voltage. The motor stator assembly 5 is configured to generate a magnetic field to drive the motor rotor assembly 4 to rotate; the motor rotor assembly 4 in the chamber three 16 is configured to drive the pump head gear 11 and the pump head gear ring 12 to rotate in the chamber one 14 to complete the oil suction and oil discharge; the motor rotor assembly 4 in the chamber four 17 is configured to drive the pump head gear 11 and the pump head gear ring 12 to rotate in the chamber six 19 to complete the oil suction and oil discharge. The above structure can reliably realize the connection between the controller and the electric oil pump, and realize the precise control of the electric oil pump when it is working.

[0040] A plurality of threaded holes are arranged on the periphery of the main housing 3, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; each pump cover 13 has two through holes at the end thereof for connecting to the hydraulic circuit of the suspension system, one hole for sucking oil and one hole for discharging oil; each pump cover 13 has a bypass flow channel at the oil suction port and the oil discharge port, and the bypass flow channel flows to the sensor 9; the sensor 9 detects the oil pressure and oil temperature, and feeds back the signal to the low-pressure controller assembly 28; when operating in the suspension system, the two motor pumps are in independent suspension systems respectively and do not interfere with each other.

[0041] Alternatively, as embodiment 3, the main housing 3 and the motor housing assembly are connected with bolts to form a whole, and the motor housing assembly is provided with threaded holes for connecting with external components. An oil passage is provided inside the main housing 3, and the oil passage connects the oil suction hole and the oil discharge hole. The main shell 3 is divided into seven chambers. The main shell 3 and the intermediate shell assembly 6 form chamber three 16 and chamber four 17. The gear pump assembly 29 is placed in chamber three 16 and chamber four 17 respectively; the intermediate shell assembly 6 and the motor shell assembly 32 form chamber two 15 and chamber six 19. The motor stator assembly 4 and the motor rotor assembly 5 are placed in chamber two 15 and chamber six 19 respectively; the motor shell assembly 32 and the low-pressure controller assembly cover 35 form chamber one 14 and chamber five 18. The low-pressure controller assembly 28 is placed in chamber one 14 and chamber five 18 respectively; the high-pressure controller assembly shell 33 is connected to the motor shell assembly 32 by bolts, and the high-pressure controller shell assembly 33 and the high-pressure controller assembly cover 34 form chamber seven 26. The high-pressure controller assembly 31 is placed in chamber seven 26.

[0042] The low-voltage controller assembly 28 is connected to the domain controller of the suspension system, and communicates through CAN to transmit signals and data; the high-voltage controller assembly 31 is connected to the battery module of the system to obtain the required high-voltage electric energy from the battery module; the high-voltage controller assembly 31 is connected to the motor stator assembly 4, and inputs the electric energy to the motor stator assembly 4 in the form of current and voltage. The motor stator assembly 4 is configured to generate a magnetic field to drive the motor rotor assembly 5 to rotate, the motor rotor assembly 5 in the chamber 2 15 is configured to drive the gear pump assembly 29 to rotate in the chamber 3 16 to complete the oil suction and oil discharge, and the motor rotor assembly 5 in the chamber 6 19 is configured to drive the gear pump assembly 29 to rotate in the chamber 4 17 to complete the oil suction and oil discharge. The above structure can reliably realize the connection between the controller and the electric oil pump, and realize the precise control of the electric oil pump when it is working.

[0043] The main housing 3 has a plurality of threaded holes on its periphery, through which bolts are passed to connect the intermediate housing assemblies 6 and the motor housing assemblies 32 on both sides; the main housing 3 has four oil ports, one oil suction port and one oil discharge port are connected to the gear pump assembly 29 on one side, and the other oil suction port and the other oil discharge port are connected to the gear pump assembly 29 on the other side, and the two sides do not interfere with each other and are independently supplied with oil; the four oil passages of the main housing 6 are bypassed with four sensors to detect the pressure and temperature of the oil circuit and feed back the signal to the low-pressure controller assembly 28.

[0044] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An integrated electric oil pump, characterized in that: The main housing (3) is divided into four chambers. The main housing (3) is connected to the controller cover (1) to form chamber one (14), and chamber one (14) is used to place the high-voltage control module of the controller assembly (2); the main housing (3) is connected to the controller cover (1) to form chamber two (15), and chamber two (15) is used to place the low-voltage control module of the controller assembly (2); the main housing (3) is connected to an intermediate housing assembly (6) to form chamber three (16), and the main housing (3) is connected to another intermediate housing assembly (6) to form chamber three (16). The motor stator assembly (4) and the motor rotor assembly (5) are placed in the chamber three (16) and the chamber four (17) respectively. An intermediate housing assembly (6) is connected to the pump cover (13) to form a chamber five (18). Another intermediate housing assembly (6) is connected to the pump cover (13) to form a chamber six (19). The chamber five (18) and the chamber six (19) are respectively arranged with a collector plate (7), a bushing (8), a sensor (9), a crescent plate (10), a pump head gear (11), and a pump head gear ring (12).

2. The integrated electric oil pump according to claim 1, characterized in that: The controller assembly (2) is connected to the domain controller of the suspension system, communicates via CAN, and transmits signals and data; the controller assembly (2) is connected to the battery module, and obtains the required high-voltage electric energy from the battery module; the controller assembly (2) is connected to the motor stator assembly (4), and inputs the electric energy into the motor stator assembly (4) in the form of current and voltage.

3. The integrated electric oil pump according to claim 1 or 2, characterized in that: The motor stator assembly (4) is configured as a structure capable of generating a magnetic field to drive the motor rotor assembly (5) to rotate; the motor rotor assembly (5) in chamber three (16) is configured as a structure capable of driving the corresponding pump head gear (11) and the pump head gear ring (12) to rotate in chamber five (18) to complete oil suction and oil discharge; the motor rotor assembly (5) in chamber four (17) is configured as a structure capable of driving the corresponding pump head gear (11) and the pump head gear ring (12) to rotate in chamber six (19) to complete oil suction and oil discharge.

4. The integrated electric oil pump according to claim 1 or 2, characterized in that: The outer periphery of the main housing (3) is provided with a plurality of threaded holes, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; two through holes are provided at the end of the pump cover (13) for connecting to the hydraulic circuit of the suspension system, one hole for oil suction and the other hole for oil discharge; the oil suction port and the oil discharge port of the pump cover (13) are both provided with bypass flow channels, and the bypass flow channels flow to the sensor (9); the sensor (9) detects the oil pressure and oil temperature, and feeds back the signal to the controller assembly (2); when operating in the suspension system, the two motor pumps are in independent suspension systems respectively and do not interfere with each other.

5. The integrated electric oil pump according to claim 1, characterized in that: Alternatively, the main housing (3) is divided into six chambers. The main housing (3) and the low-pressure controller assembly rear cover (27) form chamber five (18) and chamber two (15). The low-pressure controller assembly (28) is placed in chamber five (18) and chamber two (15), respectively. The main housing (3) and an intermediate housing assembly (6) form chamber three (16). The main housing (3) and another intermediate housing assembly (6) form chamber four (17). 6) and the motor stator assembly (4) and the motor rotor assembly (5) are placed in chamber four (17); an intermediate housing assembly (6) and a pump cover (13) form chamber one (14), and another intermediate housing assembly (6) and the pump cover (13) form chamber six (19); a gear pump assembly (29) and a sensor (9) are placed in chamber one (14) and chamber six (19) respectively.

6. The integrated electric oil pump according to claim 5, characterized in that: The low-voltage controller assembly (28) is connected to the domain controller of the suspension system, and communicates via CAN to transmit signals and data; the high-voltage controller assembly (31) is connected to the battery module to obtain the required high-voltage electric energy from the battery module; the high-voltage controller assembly (31) is connected to the motor stator assembly (4) to input the electric energy into the motor stator assembly (5) in the form of current and voltage, and the motor stator assembly (5) is configured to generate a magnetic field to drive the motor rotor assembly (4) to rotate; the motor rotor assembly (4) in chamber three (16) is configured to drive the pump head gear (11) and the pump head gear ring (12) to rotate in chamber one (14) to complete oil suction and oil discharge; the motor rotor assembly (4) in chamber four (17) is configured to drive the pump head gear (11) and the pump head gear ring (12) to rotate in chamber six (19) to complete oil suction and oil discharge.

7. The integrated electric oil pump according to claim 5 or 6, characterized in that: The outer periphery of the main housing 3 is provided with a plurality of threaded holes, and bolts are passed through the threaded holes to fix the electric oil pump assembly in the suspension system; each pump cover (13) has two through holes at the end thereof, which are used to connect the hydraulic circuit of the suspension system, one hole for oil suction and one hole for oil discharge; each pump cover (13) has a bypass flow channel at the oil suction port and the oil discharge port, and the bypass flow channel flows to the sensor (9); the sensor (9) detects the oil pressure and oil temperature, and feeds back the signal to the low-pressure controller assembly (28); when operating in the suspension system, the two motor pumps are in independent suspension systems respectively and do not interfere with each other.

8. The integrated electric oil pump according to claim 1, characterized in that: Alternatively, the main housing (3) is divided into seven chambers, the main housing (3) and the intermediate housing assembly (6) form chamber three (16) and chamber four (17), and the gear pump assembly (29) is placed in chamber three (16) and chamber four (17) respectively; the intermediate housing assembly (6) and the motor housing assembly (32) form chamber two (15) and chamber six (19), and the motor stator assembly (4) and the motor rotor assembly (5) are placed in chamber two (15) and chamber six (19) respectively; the motor housing The motor body assembly (32) and the low-pressure controller assembly cover plate (35) form chamber one (14) and chamber five (18), and the low-pressure controller assembly (28) is placed in chamber one (14) and chamber five (18) respectively; the high-pressure controller assembly housing (33) is connected to the motor housing assembly (32) by bolts, and the high-pressure controller housing assembly (33) and the high-pressure controller assembly cover plate (34) form chamber seven (26), and the high-pressure controller assembly (31) is placed in chamber seven (26).

9. The integrated electric oil pump according to claim 8, characterized in that: The low-voltage controller assembly (28) is connected to the domain controller of the suspension system, and communicates via CAN to transmit signals and data; the high-voltage controller assembly (31) is connected to the battery module of the system to obtain the required high-voltage electric energy from the battery module; the high-voltage controller assembly (31) is connected to the motor stator assembly (4) to input the electric energy into the motor stator assembly (4) in the form of current and voltage; the motor stator assembly (4) is configured to generate a magnetic field to drive the motor rotor assembly (5) to rotate; the motor rotor assembly (5) in chamber two (15) is configured to drive the gear pump assembly (29) to rotate in chamber three (16) to complete oil suction and oil discharge; the motor rotor assembly (5) in chamber six (19) is configured to drive the gear pump assembly (29) to rotate in chamber four (17) to complete oil suction and oil discharge.

10. The integrated electric oil pump according to claim 8 or 9, characterized in that: The main housing (3) has a plurality of threaded holes on its periphery, through which bolts are passed to connect the intermediate housing assemblies (6) and the motor housing assemblies (32) on both sides; the main housing (3) has four oil ports, one oil suction port and one oil discharge port connected to the gear pump assembly (29) on one side, and another oil suction port and another oil discharge port connected to the gear pump assembly (29) on the other side, so that the two sides do not interfere with each other and are independently supplied with oil; the four oil passages of the main housing (6) are bypassed with four sensors to detect the pressure and temperature of the oil passages and feed back the signals to the low-pressure controller assembly (28).

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