Two-in-one electronic oil pump

Abstract

The utility model relates to the technical field of electronic oil pumps, and discloses a two-in-one electronic oil pump which comprises a first shell, an end cover assembly is arranged at the top of the first shell, a second shell is fixedly connected to the bottom of the first shell, an installation sleeve is fixedly connected to the inner side of the first shell, and a PCB is fixedly connected to the inner side of the installation sleeve. A motor is fixedly installed on the inner side of the second shell, the PCB is electrically connected with the motor, a pump body is fixedly installed at the bottom of the second shell, and an output shaft of the motor is fixedly connected with a gear of the pump body. According to the electronic oil pump, the pump body and the motor are combined to form a two-in-one mode, a controller is omitted, and a circuit is connected through the PCB and the motor connector, so that the design cost of the oil pump can be greatly reduced, and the quality risk of the oil pump caused by the controller can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic oil pumps, and more specifically, to a two-in-one electronic oil pump. Background Art

[0002] Electronic oil pumps primarily provide power for the vehicle's lubrication and / or cooling systems. Currently, most electronic oil pumps are three-in-one, combining a pump, motor, and controller. The pump controller receives signals from the vehicle or electric drive to control the electronic oil pump to reach a corresponding speed to meet the vehicle's or electric drive's cooling and lubrication needs. This type of oil pump with a controller must meet the vehicle's EMC and EE requirements, using electronic components of varying grades and requiring associated software development.

[0003] Current electronic oil pumps have some technical defects: First, a three-in-one electronic oil pump requires a sealing layer between the controller and the motor to separate the dry and wet cavities to prevent oil from the motor side from entering the controller cavity. This design increases the design cost of the oil pump and the potential risk of oil leakage; second, the controller of the three-in-one electronic oil pump needs to be coated with heat dissipation glue to prevent the oil pump from being derated under heavy load and failing to meet the customer's working conditions; although the use of heat dissipation glue can dissipate heat from the controller, it itself will increase the design cost and production cost; third, most three-in-one electronic oil pumps are equipped with a breathing valve to reduce the risk of condensation in the PCBA cavity. The use of the breathing valve increases the design cost and also increases the production cost. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a two-in-one electronic oil pump, which has the advantages of reducing design costs and production costs.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a two-in-one electronic oil pump, comprising a first shell, an end cover assembly being provided on the top of the first shell, a second shell being fixedly connected to the bottom of the first shell, a mounting sleeve being fixedly connected to the inner side of the first shell, a PCB board being fixedly connected to the inner side of the mounting sleeve, a motor being fixedly installed on the inner side of the second shell, the PCB board being electrically connected to the motor, a pump body being fixedly installed on the bottom of the second shell, and the output shaft of the motor being fixedly connected to the gear of the pump body.

[0006] As a preferred technical solution of the present invention, the motor is a three-phase motor, and the motor is connected to the PCB board through a connector to connect the circuit.

[0007] As a preferred technical solution of the present invention, the end cover assembly includes a cover plate, and a plurality of first mounting seats are fixedly connected to the outer side of the cover plate, and the plurality of first mounting seats are distributed at equal angles around the cover plate. The outer side of the first shell is fixedly connected to a plurality of second mounting seats corresponding one to one to the first mounting seats, and the plurality of second mounting seats are fixedly connected to the corresponding first mounting seats by bolts.

[0008] As a preferred technical solution of the present invention, one end of the cover is fixedly connected to a wiring portion for connecting to an external power supply circuit, and an output end of the wiring portion is electrically connected to the PCB board.

[0009] As a preferred technical solution of the present invention, a plurality of air holes are provided on the outer edge of the cover plate, and the air holes are used for heat dissipation of the motor.

[0010] As a preferred technical solution of the present invention, one of the motor or the PCB board is grounded to the outside through a wire.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The electronic oil pump adopts a two-in-one design, which combines the pump body and the motor. The controller is eliminated and the circuit is connected through the PCB board and the motor connector. This not only greatly reduces the design cost of the oil pump, but also reduces the quality risk of the oil pump caused by the controller.

[0013] 2. Since the controller is eliminated, there is no dry or wet chamber, which reduces the need for a seal design. This can further reduce the cost and potential risk of oil leakage of the electronic oil pump, while also reducing the weight of the oil pump.

[0014] 3. Since the controller is eliminated, the use of heat dissipation glue for the controller is also eliminated, further reducing design and production costs, while also reducing the weight of the oil pump;

[0015] 4. Air holes are designed on the cover to dissipate heat, eliminating the need for a breathing valve, reducing design and production costs, and also reducing overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a two-in-one electronic oil pump of the present invention;

[0017] Figure 2 This is an exploded view of a two-in-one electronic oil pump of the present invention;

[0018] Figure 3 This is a schematic structural diagram of a PCB board of the present invention;

[0019] Figure 4This is a schematic diagram of the internal structure of the first shell of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the end cover assembly of the present utility model.

[0021] In the figure: 1. First shell; 2. End cover assembly; 21. Cover plate; 22. First mounting seat; 23. Wiring portion; 24. Air hole; 3. Second mounting seat; 4. Second shell; 5. Pump body; 6. Mounting sleeve; 7. PCB board; 8. Motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, the present invention provides a two-in-one electronic oil pump, comprising a first housing 1, with an end cap assembly 2 disposed on the top of the first housing 1. A second housing 4 is fixedly connected to the bottom of the first housing 1. A mounting sleeve 6 is fixedly connected to the inner side of the first housing 1, and a PCB board 7 is fixedly connected to the inner side of the mounting sleeve 6. A motor 8 is fixedly mounted on the inner side of the second housing 4, and the PCB board 7 is electrically connected to the motor 8. The motor 8 is a three-phase motor, and the motor 8 is connected to the PCB board 7 via a connector to complete the circuit. A pump body 5 is fixedly mounted on the bottom of the second housing 4, and the output shaft of the motor 8 is fixedly connected to the gear of the pump body 5. The electronic oil pump adopts a two-in-one design formed by the combination of the pump body 5 and the motor 8, eliminating the controller and connecting the circuit through the PCB board 7 and the motor connector. This not only significantly reduces the design cost of the oil pump, but also reduces the quality risk of the oil pump caused by the controller. In addition, the elimination of the controller eliminates the dry and wet chambers, thereby eliminating a sealing design, further reducing the cost and potential oil leakage risk of the electronic oil pump, while also reducing the weight of the oil pump.

[0024] It should be noted that the PCB board 7 has two forms, one with a position sensor and the other without a position sensor. As another embodiment, a connection bridge can be used instead of the PCB board for connection.

[0025] Furthermore, since the controller is eliminated, the use of heat dissipation glue for dissipating heat from the controller is also eliminated, further reducing design costs and production costs, while also reducing the weight of the oil pump.

[0026] The end cap assembly 2 includes a cover plate 21, with a plurality of first mounting blocks 22 fixedly connected to the outside of the cover plate 21. The first mounting blocks 22 are equiangularly distributed around the cover plate 21. A plurality of second mounting blocks 3 corresponding one-to-one with the first mounting blocks 22 are fixedly connected to the outside of the first housing 1. The second mounting blocks 3 are fixedly connected to the corresponding first mounting blocks 22 via bolts. The bolted connection between the second mounting blocks 3 and the first mounting blocks 22 facilitates removal of the cover plate 21, thereby facilitating maintenance of the PCB.

[0027] One end of the cover 21 is fixedly connected to a connection portion 23 for connecting to an external power circuit. The output end of the connection portion 23 is electrically connected to the PCB board 7. The outer edge of the cover 21 is provided with a plurality of air holes 24 for dissipating heat from the motor 8. The design of the air holes 24 on the cover 21 for heat dissipation eliminates the need for a breathing valve, reduces design and production costs, and also reduces the overall weight.

[0028] Among them, one of the motor 8 or the PCB board 7 is grounded to the outside through a wire, which is beneficial to reducing the electromagnetic radiation generated by the stator assembly and the PCB board in the motor 8, and further helps to reduce the interference of electromagnetic radiation on the electronic components of the PCB board or other external devices, thereby improving the stability of the electronic oil pump.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-in-one electronic oil pump, comprising a first housing (1), characterized in that: An end cover assembly (2) is provided on the top of the first shell (1), a second shell (4) is fixedly connected to the bottom of the first shell (1), a mounting sleeve (6) is fixedly connected to the inner side of the first shell (1), a PCB board (7) is fixedly connected to the inner side of the mounting sleeve (6), a motor (8) is fixedly installed on the inner side of the second shell (4), the PCB board (7) is electrically connected to the motor (8), a pump body (5) is fixedly installed on the bottom of the second shell (4), and an output shaft of the motor (8) is fixedly connected to a gear of the pump body (5).

2. The two-in-one electronic oil pump according to claim 1, characterized in that: The motor (8) is a three-phase motor, and the motor (8) is connected to the PCB board (7) through a plug-in connector to connect the circuit.

3. The two-in-one electronic oil pump according to claim 1, characterized in that: The end cover assembly (2) comprises a cover plate (21), a plurality of first mounting seats (22) are fixedly connected to the outer side of the cover plate (21), and the plurality of first mounting seats (22) are distributed at equal angles around the cover plate (21); a plurality of second mounting seats (3) corresponding one-to-one to the first mounting seats (22) are fixedly connected to the outer side of the first shell (1), and the plurality of second mounting seats (3) are fixedly connected to the corresponding first mounting seats (22) by bolts.

4. The two-in-one electronic oil pump according to claim 3, characterized in that: One end of the cover plate (21) is fixedly connected to a wiring portion (23) for connecting to an external power supply circuit, and an output end of the wiring portion (23) is electrically connected to the PCB board (7).

5. The two-in-one electronic oil pump according to claim 4, characterized in that: A plurality of air holes (24) are provided on the outer edge of the cover plate (21), and the air holes (24) are used for heat dissipation of the motor (8).

6. The two-in-one electronic oil pump according to claim 1, characterized in that: One of the motor (8) or the PCB board (7) is grounded to the outside via a wire.

Images