Heat dissipation structure of motor

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a heat dissipation structure of a motor, which comprises a motor casing, and the motor casing comprises a medium accommodating chamber arranged in the motor casing and used for accommodating a heat-conducting medium; the plurality of heat conduction fins are circumferentially distributed on the radial outer side of the motor shell; wherein at least part of the heat conduction fin penetrates through the motor shell and extends into the medium containing cavity, the end, located in the medium containing cavity, of the heat conduction fin is concaved inwards to form a first foot part and a second foot part, and a motor rear cover plate used for opening or closing the medium containing cavity is arranged on one side of the motor shell. The beneficial effects of the utility model are that the medium accommodating chamber for accommodating the heat-conducting medium is matched with the plurality of heat-conducting fins extending into the medium accommodating chamber, so that the motor can maintain a better heat dissipation effect during operation, and the heat-conducting medium and the heat-conducting fins can be in better contact for heat conduction due to the first foot part and the second foot part which are formed by recessing inwards.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a heat dissipation structure of a motor. Background Art

[0002] At present, the application scope of motors is mainly small electric vehicles, such as electric cars, electric bicycles, electric scooters, and special vehicles, etc.

[0003] When the motor drives the above-mentioned wheel hubs, the motor itself will continuously generate heat. To ensure that the motor can operate normally without overheating and damage, it is necessary to ensure that the motor housing has good heat dissipation effect. Therefore, there is an urgent need for a motor housing that can meet the good heat dissipation effect of the motor to solve the above problems. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a heat dissipation structure of a motor to solve the above problems.

[0005] The technical solution of the utility model is realized as follows: A heat dissipation structure of a motor includes a motor housing, and the motor housing includes:

[0006] A medium accommodating chamber, which is opened inside the motor housing and is used to accommodate a heat-conducting medium;

[0007] Heat-conducting fins, several of which are provided and are circumferentially distributed on the radial outer side of the motor housing;

[0008] Among them, at least part of the heat-conducting fins penetrate the motor housing and extend into the medium accommodating chamber. One end of the heat-conducting fin located in the medium accommodating chamber is concave to form a first foot and a second foot. A motor rear cover plate for opening or closing the medium accommodating chamber is arranged on one side of the motor housing.

[0009] Further, a U-shaped air guiding chamber is opened between the first foot and the second foot, and several rectangular air guiding grooves penetrating the upper end of the heat dissipation fins are opened on the upper cavity wall of the air guiding chamber.

[0010] Further, several medium accommodating chambers are provided, and the several medium accommodating chambers are annularly and arrayedly distributed inside the motor housing.

[0011] Further, a diversion hole is opened between two adjacent medium accommodating chambers.

[0012] Further, a liquid injection hole and a liquid outlet hole communicating with the medium accommodating chamber are opened on the outer side of the motor rear cover plate, and the liquid injection hole and the liquid outlet hole are arranged far away from each other.

[0013] The beneficial effects of the utility model are as follows:

[0014] A medium accommodating chamber for accommodating a heat-conducting medium, in combination with a number of heat-conducting fins extending into the medium accommodating chamber, can enable the motor to maintain a relatively good heat dissipation effect during operation;

[0015] The first and second feet formed by concave can enable the heat-conducting medium to better contact and conduct heat with the heat-conducting fins. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a cross-sectional view of the motor in the specific embodiment of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the heat-conducting fins in the specific embodiment of the present invention. Specific Embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] As Figures 1 to 2 shown, the present invention discloses a heat dissipation structure of a motor, including a motor housing 1, and the motor housing 1 includes:

[0022] The medium accommodating chamber 2 is opened inside the motor housing 1 and is used to accommodate the heat-conducting medium;

[0023] There are several heat-conducting fins 3, which are circumferentially distributed on the radial outer side of the motor housing 1;

[0024] Among them, at least part of the heat-conducting fin 3 penetrates through the motor housing 1 and extends into the medium accommodating chamber 2. One end of the heat-conducting fin 3 located in the medium accommodating chamber 2 is concave to form a first foot 31 and a second foot 32. A motor rear cover plate 10 for opening or closing the medium accommodating chamber is provided on one side of the motor housing 1.

[0025] In this solution, the heat-conducting medium is a heat-conducting oil liquid or other high-heat-conductivity liquids such as a coolant;

[0026] In this solution, the side of the medium accommodating chamber facing the motor rear cover plate is open. When the motor rear cover plate is installed and fitted with the motor housing, the medium accommodating chamber is closed accordingly. A sealing rubber ring can be installed on the mating surface between the motor rear cover plate and the motor housing to improve the sealing performance of the medium accommodating chamber;

[0027] By adopting the above technical solution, the medium accommodating chamber for accommodating the heat-conducting medium, together with several heat-conducting fins extending into the medium accommodating chamber, can enable the motor to maintain a relatively good heat dissipation effect during operation;

[0028] The first foot and the second foot formed by the concavity can enable the heat-conducting medium to better contact and conduct heat with the heat-conducting fin;

[0029] After the motor is used for a long time, the motor rear cover plate can be removed to clean the cavity wall of the medium accommodating chamber, so as to prevent impurities in the heat-conducting medium from sticking to the inner wall of the medium accommodating chamber and the surface of the heat-conducting fin and affecting heat dissipation.

[0030] This embodiment provides a heat dissipation structure for a motor. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0031] Further, a U-shaped air guiding chamber 33 is opened between the first foot 31 and the second foot 32, and several rectangular air guiding grooves 34 penetrating through the upper end of the heat dissipation fin 3 are opened on the upper cavity wall of the air guiding chamber 33.

[0032] By adopting the above technical solution, through the combined use of the rectangular air guiding grooves and the air guiding chamber, the heat dissipation effect can be further improved, and the setting of the rectangular air guiding grooves is convenient for cleaning and maintenance when the air guiding grooves are blocked.

[0033] This embodiment provides a heat dissipation structure for a motor. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0034] Further, a plurality of medium accommodating chambers 2 are provided, and the plurality of medium accommodating chambers 2 are distributed in an annular array inside the motor housing 1.

[0035] By adopting the above technical solution, the plurality of medium accommodating chambers distributed in an annular array can make the heat dissipation of the motor itself more uniform.

[0036] This embodiment provides a heat dissipation structure of a motor. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0037] Further, a diversion hole is provided between two adjacent medium accommodating chambers 2.

[0038] By adopting the above technical solution, it is convenient for the heat-conducting medium to flow in each chamber and for the medium to circulate.

[0039] This embodiment provides a heat dissipation structure of a motor. In addition to including the technical solution of the above embodiment, it also has the following technical features.

[0040] Further, a liquid injection hole and a liquid outlet hole communicating with the medium accommodating chamber 2 are provided on the outer side of the motor rear cover plate 10, and the liquid injection hole and the liquid outlet hole are arranged away from each other.

[0041] By adopting the above technical solution, it is convenient to inject the heat-conducting medium through the external pump valve cycle through the diversion hole in cooperation with the liquid injection hole and the liquid outlet hole, and the use effect is good.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure of a motor, comprising a motor housing (1), characterized in that: The motor housing (1) comprises: A medium containing chamber (2) is provided inside the motor housing (1) and is used to contain a heat-conducting medium; A plurality of heat-conducting fins (3) are provided and distributed circumferentially on the radially outer side of the motor housing (1); The heat conducting fin (3) at least partially penetrates the motor housing (1) and extends into the medium accommodating chamber (2); one end of the heat conducting fin (3) located in the medium accommodating chamber (2) is concave to form a first foot (31) and a second foot (32); and a motor rear cover (10) for opening or closing the medium accommodating chamber is provided on one side of the motor housing (1).

2. A heat dissipation structure of a motor according to claim 1, characterized in that: A door-shaped air guide chamber (33) is provided between the first foot portion (31) and the second foot portion (32), and a plurality of rectangular air guide grooves (34) penetrating the upper ends of the heat-conducting fins (3) are provided on the upper wall of the air guide chamber (33).

3. A heat dissipation structure of a motor according to claim 1 or 2, characterized in that: A plurality of medium accommodating chambers (2) are provided, and the plurality of medium accommodating chambers (2) are distributed inside the motor housing (1) in an annular array.

4. The heat dissipation structure of a motor according to claim 3, characterized in that: A flow guide hole is provided between two adjacent medium containing chambers (2).

5. The heat dissipation structure of a motor according to claim 1, characterized in that: A liquid injection hole and a liquid outlet hole which are in communication with the medium accommodating chamber (2) are provided on the outer side of the motor rear cover plate (10), and the liquid injection hole and the liquid outlet hole are arranged away from each other.

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