Cooling device for motor

Abstract

The present invention provides a motor cooling device characterized by having a cooling medium gallery in which a cooling medium is supplied to a shaft support mounted around the motor inside the transmission.

Description

Technology Field

[0001] The present invention relates to a vehicle motor cooling device. Background Technology

[0002] Published Patent Application No. 10-2024-0080652 discloses a cooling device for a motor comprising a first pipe section configured in a circular shape, a second pipe section extending in a straight line from one end of the first pipe section, and a third pipe section extending in a straight line from the other end of the first pipe section, wherein the first pipe section, the second pipe section, and the third pipe section are composed of a single pipe.

[0003] Generally, electric vehicles can be classified into hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), pure electric vehicles (BEV, EV), and hydrogen fuel cell electric vehicles (FCEV).

[0004] An electric vehicle may be equipped with a cooling tube for cooling the motor. Cooling of the first motor (P1) can be achieved by directly spraying oil cooled in the cooler onto the first motor (P1) through the cooling tube. The oil sprayed through the shaft's passage can indirectly cool the second motor (P2) after clutch lubrication.

[0005] However, a separate cooling tube is required for direct cooling of the second motor (P2), but if a separate cooling tube is configured, the cost increases and assembly process is added due to the configuration of the separate cooling tube, and it is difficult to manage because a small oil hole must be machined in the thin cooling tube to control the cooling flow rate, and the layout is inevitably disadvantageous due to the installation of the separate cooling tube. Prior art literature

[0006] Republic of Korea Published Patent Application No. 10-2024-0080652 (Published June 7, 2024) The problem to be solved

[0007] In order to solve the aforementioned problem, the present invention aims to provide a vehicle motor cooling device that enables cooling of the motor by directly injecting a cooling medium into the motor through a cooling medium gallery and a cooling medium injection hole provided in the shaft support when the motor overheats due to high-load driving of the transmission of an electric vehicle. means of solving the problem

[0008] To achieve the aforementioned objective, the present invention provides a motor cooling device characterized by having a cooling medium gallery in which a cooling medium is supplied to a shaft support mounted around the motor inside the transmission.

[0009] In addition, the shaft support may include a hub coupled to the shaft; and bolt holes provided along the edges.

[0010] In addition, the shaft support is provided with a cooling medium injection hole, and the cooling medium injection hole may be formed along the circumference of the hub at a distance from the hub on one side of the shaft support facing the motor.

[0011] In addition, the cooling medium injection hole may be formed on one side of the shaft support between the hub and the bolt hole.

[0012] In addition, the cooling medium gallery may be provided on the other side of the shaft support.

[0013] In addition, the cooling medium gallery can be formed in a circular shape.

[0014] In addition, the cooling medium gallery may be in communication with the cooling medium injection hole.

[0015] In addition, the cooling medium gallery is connected to a cooler, and the cooling medium supplied from the cooler can pass through the cooling medium gallery and be sprayed onto the motor through the cooling medium injection hole.

[0016] delete

[0017] In addition, the cooling medium may be oil. Effects of the invention

[0018] In this invention, cooling of the motor can be achieved by directly injecting a cooling medium into the motor through a cooling medium gallery and a cooling medium injection hole provided in the shaft support.

[0019] In addition, the present invention can reduce manufacturing costs because it does not require a separate cooling tube for cooling the motor.

[0020] In addition, since the present invention does not require a separate cooling tube for cooling the motor, the number of parts can be reduced, and as a result, the vehicle weight can be reduced.

[0021] In addition, the present invention can simplify the assembly process because it does not require a separate cooling tube for cooling the motor.

[0022] In addition, the present invention can reduce the vehicle layout because it does not require a separate cooling tube for cooling the motor. Brief explanation of the drawing

[0023] FIG. 1 is a drawing showing a state in which a shaft support according to a preferred embodiment of the present invention is mounted on a transmission. FIG. 2 is a front perspective view of a shaft support according to a preferred embodiment of the present invention. FIG. 3 is a perspective view of a shaft support according to a preferred embodiment of the present invention, viewed from the rear. Specific details for implementing the invention

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description is omitted. Additionally, while preferred embodiments of the present invention will be described below, the technical concept of the present invention is not limited or restricted thereto and can be modified and implemented in various ways by those skilled in the art.

[0025] FIG. 1 is a drawing showing a shaft support according to a preferred embodiment of the present invention mounted on a transmission, FIG. 2 is a perspective view of the shaft support according to a preferred embodiment of the present invention viewed from the front, and FIG. 3 is a perspective view of the shaft support according to a preferred embodiment of the present invention viewed from the rear.

[0026] As illustrated in FIGS. 1 to 3, the present invention is characterized by enabling cooling of the motor (11) by directly injecting a cooling medium through a cooling medium gallery (124) and a cooling medium injection hole (123) provided in a shaft support (12) when the motor (11) overheats due to high-load driving of the transmission (10) of an electric vehicle.

[0027] The cooling medium can be injected directly into the motor (11) through the cooling medium gallery (124) and the cooling medium injection hole (123). For example, the cooling medium may be oil.

[0028] The shaft support (12) can be mounted around the motor (11) inside the transmission (10). In the present invention, the transmission (10) may be a transmission of an electric vehicle, such as a hybrid vehicle or a pure electric vehicle.

[0029] The shaft support (12) may include a hub (121) and a bolt hole (122). The hub (121) may be coupled to the shaft (13). The bolt hole (122) may be provided along the edge of the shaft support (12). A bolt (14) may be coupled to the inner wall of the transmission (10) by passing through the bolt hole (122).

[0030] A cooling medium injection hole (123) may be provided on one side of the shaft support (12). The cooling medium injection hole (123) may be formed along the circumference of the hub (121) with a gap from the hub (121). One side of the shaft support (12) may face the motor (11).

[0031] A cooling medium injection hole (123) can be formed on one side of the shaft support (12) between the hub (121) and the bolt hole (122).

[0032] A cooling medium gallery (124) may be provided on the other side of the shaft support (12). The cooling medium gallery (124) may be formed in a circular shape. The cooling medium gallery (124) may be in communication with a cooling medium injection hole (123).

[0033] The cooling medium gallery (124) can be connected to a cooler (not shown) of a known configuration that supplies a cooling medium. The cooling medium supplied from the cooler (not shown) can be sprayed onto the motor (11) through the cooling medium gallery (124) of the shaft support (12) and the cooling medium injection hole (123).

[0034] In addition to the motor (11), another motor (16) may be installed in the transmission (10) of the present invention. The other motor (16) may be a P1 motor. The other motor (16) may be cooled by a cooling medium sprayed from a cooling tube (15).

[0035] The following describes the cooling medium injection process of the present invention.

[0036] As shown in FIGS. 1 to 3, the cooling medium supplied from the cooler (not shown) can be supplied to a circular cooling medium gallery (124) provided in the shaft support (12).

[0037] The cooling medium supplied to the cooling medium gallery (124) can be directly injected into the motor (11) through the cooling medium injection holes (123) arranged along the circular cooling medium gallery (124).

[0038] Since the cooling medium injection holes (123) are formed at regular intervals along the circular cooling medium gallery (124), the cooling medium supplied to the cooling medium gallery (124) is inevitably sprayed evenly over the entire motor (11) through the cooling medium injection holes (123).

[0039] As the cooling medium is evenly and directly sprayed throughout the motor (11) through the cooling medium injection hole (123), the cooling of the motor (11) can be smoothly achieved.

[0040] As described above, the present invention enables cooling of the motor by directly injecting a cooling medium into the motor through a cooling medium gallery and a cooling medium injection hole provided in the shaft support. Furthermore, since the present invention does not require a separate cooling tube for cooling the motor, manufacturing costs can be reduced. Additionally, since the present invention does not require a separate cooling tube for cooling the motor, the number of parts can be reduced, thereby reducing vehicle weight. Moreover, since the present invention does not require a separate cooling tube for cooling the motor, the assembly process can be simplified. Furthermore, since the present invention does not require a separate cooling tube for cooling the motor, the vehicle layout can be reduced.

[0041] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments and accompanying drawings. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0042] 10 : Transmission 11 : Motor 12: Shaft support 121 : Hub 122: Bolt hole 123: Cooling medium injection hole 124 : Cooling Media Gallery 13 : Shaft 14 : Bolt 15 : Cooling tube 16: Other motors

Claims

Claim 1 A motor cooling device having a cooling medium gallery in which a cooling medium is supplied to a shaft support mounted around a motor inside a transmission, wherein the shaft support comprises: a hub coupled to a shaft; and a bolt hole provided along the edge; wherein the shaft support is provided with a cooling medium injection hole, the cooling medium injection hole is formed along the circumference of the hub with a gap from the hub on one side of the shaft support facing the motor, and is formed between the hub and the bolt hole on one side of the shaft support; wherein the cooling medium gallery is provided on the other side of the shaft support and communicates with the cooling medium injection hole, and wherein the cooling medium is oil. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A motor cooling device according to claim 1, wherein the cooling medium gallery is formed in a circular shape. Claim 7 delete Claim 8 A motor cooling device according to claim 1, wherein the cooling medium gallery is connected to a cooler, and the cooling medium supplied from the cooler is sprayed onto the motor through the cooling medium gallery and the cooling medium injection hole. Claim 9 delete Claim 10 delete

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