Cooling device in gear motor
By directly connecting the electronically controlled cooling circuit with the motor cooling circuit in the reducer motor, and using the design of the baffle plate and the coolant communication tank, the low integration and installation problems caused by the separation of the cooling circuit are solved, and efficient cooling effect and simplified installation are achieved.
Patent Information
- Application Number
- CN202421991193.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The cooling circuit of the electronic control part and the motor part of the existing high-power drive motor are partially opened inside the machine body, resulting in low integration of the cooling circuit and troublesome installation.
In the reducer motor, the electronically controlled cooling circuit is directly connected to the motor cooling circuit. By setting a baffle plate and a coolant communication tank in the motor housing and the reducer housing, the surrounding flow of coolant is achieved, and the heat dissipation effect is improved in combination with the thermal conduction column.
The internal integration of the electronic control part and the motor part cooling circuit is realized, which improves the heat dissipation effect and simplifies the installation process.
Smart Images
Figure CN223052847U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cooling device in a mechanical and electrical equipment, in particular to a cooling device in a reduction motor. Background Art
[0002] As is well known, high-power drive motors for electric motorcycles are widely used due to their advantages such as light weight, small size, and high efficiency. The normal operation of the drive motor directly affects the performance of the electric motorcycle itself. Therefore, the high-power drive motor usually adopts a water-cooling method to cool it to prevent it from being affected by overheating and affecting its normal operation. At present, the cooling circuit of the electronic control part and the cooling circuit of the motor part of the drive motor are separated inside the body of the drive motor, and additional external water pipes are required to connect the two, which results in low integration and unreliability of the entire cooling circuit of the drive motor. Moreover, the additional external water pipes add trouble to the installation of the entire drive motor. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a cooling device in a reduction motor that can directly connect the cooling circuit of the electronic control part and the cooling circuit of the reduction motor part inside the body of the reduction motor.
[0004] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A cooling device in a speed reduction motor, comprising: a motor housing, and a speed reducer housing provided on the motor housing. An electric control installation chamber and an annular motor transmission chamber are provided in the motor housing. An electric control cooling chamber corresponding to the electric control installation chamber and a speed reduction transmission chamber corresponding to the motor transmission chamber in the motor housing are provided in the speed reducer housing. A motor end cover is provided above the motor transmission chamber of the motor housing. A partition connected to the speed reduction transmission chamber is longitudinally provided in the electric control cooling chamber of the speed reducer housing, separating the electric control cooling chamber into two coolant inlet and outlet channels. Baffle plates perpendicular to the traveling direction of the coolant are respectively provided on the two side walls of the coolant inlet and outlet channels. Moreover, the baffle plates on the two side walls of the coolant inlet and outlet channels are staggered from each other. Coolant inlets and outlets are respectively opened at one ends of the bottom walls of the two coolant inlet and outlet channels far from the speed reduction transmission chamber, and coolant pipe connectors are provided on the coolant inlets and outlets. Coolant diversion notches corresponding to the two coolant inlet and outlet channels are provided on the side wall of the speed reduction transmission chamber. N coolant communication grooves matching the coolant diversion notches are provided around the speed reduction transmission chamber on one side of the speed reducer housing facing the motor housing, where N is a positive integer greater than or equal to 3. All the coolant diversion notches and coolant communication grooves are arc-shaped and form a circle around the speed reduction transmission chamber. 2N + 2 coolant through holes are provided around the motor transmission chamber on one side of the motor housing facing the speed reducer housing. Two of the coolant through holes are respectively connected to the two coolant diversion notches in one-to-one correspondence. Among the remaining 2N coolant through holes, each coolant communication groove corresponds to two adjacent coolant through holes, and moreover, each coolant through hole communicates with only one coolant communication groove. Coolant through hole connection grooves are respectively opened on the other side of the motor housing to connect two adjacent coolant through holes corresponding to different coolant communication grooves or one corresponding to a coolant communication groove and the other corresponding to a coolant diversion notch.
[0005] As a preferred solution, in the cooling device in a speed reduction motor, a plurality of heat conducting columns are provided on the back surface of the bottom wall of the electric control installation chamber of the motor housing.
[0006] As a preferred solution, in the cooling device in a speed reduction motor, the heat conducting columns are arranged in a mesh pattern.
[0007] As a preferred solution, in the cooling device in a speed reduction motor, the coolant through hole connection groove is arc-shaped and corresponds to the motor transmission chamber.
[0008] As a preferred solution, in the cooling device in a speed reduction motor, the extending length of the baffle plate is greater than half of the width of the coolant inlet and outlet channel at its position.
[0009] As a preferred solution, in the cooling device of the speed reduction motor described above, the length that the baffle plate extends out is less than or equal to two-thirds of the width of the coolant inlet and outlet channel at its position.
[0010] The beneficial effects of the present utility model are as follows:
[0011] 1. The present utility model comprehensively and evenly cools the electric control installation chamber by arranging baffle plates in the coolant inlet and outlet channels. By arranging coolant communication grooves on one side of the reducer housing facing the motor housing, and a number of pairs of coolant through holes corresponding to the respective coolant communication grooves on one side of the motor housing facing the reducer housing, and respectively opening connection grooves for connecting two adjacent coolant through holes corresponding to different coolant communication grooves on the other side of the motor housing, the coolant can flow around the motor transmission chamber and the speed reduction transmission chamber, comprehensively and evenly cooling the motor transmission chamber and the speed reduction transmission chamber, realizing the integration of the cooling circuit inside the body of the drive motor, realizing the direct and reliable connection of the cooling circuit of the electric control part and the cooling circuit of the motor part inside the body of the drive motor, and moreover, no external water pipe is needed anymore, making the installation of the entire drive motor more convenient.
[0012] 2. The present utility model greatly improves the heat dissipation effect of the electric control installation chamber by arranging heat conducting columns with a mesh structure on the back surface of the bottom wall of the electric control installation chamber of the motor housing.
[0013] 3. The present utility model controls the length that the baffle plate extends out, enabling the coolant to flow more evenly in the coolant inlet and outlet channels, thereby comprehensively and evenly cooling the electric control installation chamber more effectively and improving the heat dissipation effect of the electric control installation chamber. Description of the Drawings
[0014] Figure 1 and Figure 2 are exploded views of two perspectives of the cooling device in the speed reduction motor of the present utility model.
[0015] Figure 3 is a schematic structural diagram of the traveling route of the coolant in the reducer housing.
[0016] Figure 4 is a front view structural diagram of the motor housing.
[0017] Figure 5 is a three-dimensional structural diagram of the motor housing.
[0018] Figures 1 to 5The reference numerals in the drawings are: 1, motor end cover, 2, motor housing, 22, heat-conducting column, 201, electric control installation room, 202, motor transmission room, 205, coolant through hole, 251, coolant through hole connecting groove, 3, reducer housing, 301, electric control cooling room, 3011, coolant inlet and outlet channel, 3012, coolant inlet and outlet channel, 302, reduction transmission room, 3021, coolant guide gap, 3022, coolant guide gap, 305, coolant connecting groove, 31, coolant pipe interface, 311, coolant inlet and outlet, 32, coolant pipe interface, 321, coolant inlet and outlet, 33, partition, 34, baffle, 35, baffle, 37, installation column. DETAILED DESCRIPTION
[0019] The specific implementation scheme of the cooling device in the reduction motor according to the utility model is described in detail below with reference to the accompanying drawings.
[0020] like Figure 1 and Figure 2 As shown, a cooling device in a reduction motor described in the utility model comprises: a motor housing 2 and a reducer housing 3 arranged on the motor housing 2, wherein the motor housing 2 is provided with an electric control installation chamber 201 and an annular motor transmission chamber 202, wherein the reducer housing 3 is provided with an electric control cooling chamber 301 corresponding to the electric control installation chamber 201, and a reduction transmission chamber 302 corresponding to the motor transmission chamber 202 in the motor housing 2, and the motor housing 2 is provided with a motor end cover 1 above the motor transmission chamber 202; the reducer housing 3 is provided with a partition 33 connected to the side wall of the reduction transmission chamber 302 in the electric control cooling chamber 301 along the longitudinal direction, and the electric control cooling chamber 301 is divided into two coolant inlet and outlet channels 3011 and 302. 012, taking the coolant inlet and outlet channel 3012 as an example, two baffles 34 are arranged on one side wall of the coolant inlet and outlet channel 3012, that is, on the side of the corresponding side of the partition 33, and are perpendicular to the direction of travel of the coolant. A baffle 35 is arranged on the other side wall of the coolant inlet and outlet channel 3012, which is perpendicular to the direction of travel of the coolant and staggered with the two baffles 34. The extended length of the baffles 34 and 35 is greater than half of the width of the coolant inlet and outlet channel 3012 at the position where they are located, and less than or equal to two-thirds of the width of the coolant inlet and outlet channel 3012 at the position where they are located; the bottom walls of the two coolant inlet and outlet channels 3011 and 3012 are provided with coolant inlets and outlets 311 and 321 (see Figure 3As shown in the figure, coolant pipe connectors 31 and 32 are respectively provided on the two coolant inlet and outlet ports 311 and 321 in a one-to-one correspondence; on the side wall of the reduction drive chamber 302 near the electric control cooling chamber 301, coolant diversion notches 3021 and 3022 corresponding to the two coolant inlet and outlet channels 3011 and 3012 in a one-to-one correspondence are provided. On the side of the reducer housing 3 facing the motor housing 2, four arc-shaped coolant connection grooves 305 corresponding to the coolant diversion notches 3021 and 3022 and corresponding to the reduction drive chamber 302 are provided around the reduction drive chamber 302, so that the two coolant diversion notches 3021, 3022 and the four coolant connection grooves 305 exactly form a circle around the reduction drive chamber 302; as Figure 4 and Figure 5 shown in the figure, on the side of the motor housing 2 facing the reducer housing 3, ten coolant through holes 205 are provided around the motor drive chamber 202, so that the ten coolant through holes 205 form a circle around the motor drive chamber 202. Among them, two adjacent coolant through holes 205 are connected to the coolant diversion notches 3021 and 3022 in a one-to-one correspondence. Among the remaining eight coolant through holes 205, each coolant connection groove 305 is connected to two adjacent coolant through holes 205, and moreover, each coolant through hole 205 communicates with only one coolant connection groove 305; on the other side of the motor housing 2, five coolant through hole connection grooves 251 that are connected to two adjacent ones in a one-to-one correspondence and correspond to different coolant connection grooves 305 or one corresponds to the coolant connection groove 305 and the other corresponds to the coolant diversion notch 3021 or 3022 are provided. All five coolant through hole connection grooves 251 are arc-shaped and correspond to the motor drive chamber 202; on the back surface of the bottom wall of the electric control installation chamber 201 of the motor housing 2, a number of heat conducting columns 22 arranged in a net shape are provided.
[0021] In actual application, the corresponding end of the partition plate 33 is exactly connected to the mounting post 37 provided on the side wall of the reduction drive chamber 302.
[0022] In actual use, the coolant inlet and outlet channel 3011 can be used as the inlet channel, and the coolant inlet and outlet channel 3012 can be used as the outlet channel. Correspondingly, the coolant pipe interface 31 is used as the inlet interface, and the coolant pipe interface 32 is used as the outlet interface. During actual operation, cooling water is usually used as the coolant. The specific working process is as follows: The cooling water enters the coolant inlet and outlet channel 3011 from the coolant pipe interface 31, and enters the corresponding coolant through-hole 205 through the coolant diversion notch 3021. The cooling water entering this coolant through-hole 205 enters the adjacent coolant through-hole 205 through the coolant through-hole connection groove 251, and then flows to the coolant connection groove 305. Since the coolant connection groove 305 communicates with two coolant through-holes 205, the cooling water then flows into another coolant through-hole 205 that also communicates with this coolant connection groove 305. By analogy, after the cooling water orbits around the motor transmission chamber 202 of the motor housing 2 for one week, it flows out from the other coolant diversion notch 3022, and after passing through the coolant inlet and outlet channel 3012, it flows out from the coolant pipe interface 32.
[0023] In summary, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Any equivalent changes and modifications made to the shape, structure, features and spirit described in the claims of the present invention shall be included within the scope of the claims of the present invention.
Claims
1. A cooling device in a reduction motor, comprising: The motor housing and the reducer housing arranged on the motor housing are characterized in that the motor housing is provided with an electric control installation room and an annular motor transmission room, the reducer housing is provided with an electric control cooling room corresponding to the electric control installation room, and a reduction transmission room corresponding to the motor transmission room in the motor housing, and the motor housing is provided with a motor end cover above the motor transmission room; the reducer housing is provided with a partition connected to the reduction transmission room in the electric control cooling room along the longitudinal direction, and the electric control cooling room is divided into two cooling liquid inlet and outlet channels, and the side walls on both sides of the cooling liquid inlet and outlet channels are respectively provided with baffles perpendicular to the traveling direction of the cooling liquid, and the baffles on the side walls on both sides of the cooling liquid inlet and outlet channels are staggered with each other, and the bottom walls of the two cooling liquid inlet and outlet channels are respectively provided with cooling liquid inlet and outlet at the end away from the reduction transmission room, and the cooling liquid inlet and outlet are provided with cooling liquid pipe interfaces; the side walls of the reduction transmission chamber are provided with baffles connected to the two cooling liquid inlets The outlet channels correspond to the coolant guide notches that communicate with each other one by one. The reducer housing is provided with N coolant connecting grooves that match the coolant guide notches around the reduction transmission chamber on the side facing the motor housing, N is a positive integer greater than or equal to 3, and all the coolant guide notches and coolant connecting grooves are arc-shaped and form a circle around the reduction transmission chamber; the motor housing is provided with 2N+2 coolant through holes around the motor transmission chamber on the side facing the reducer housing, two of which are connected to the two coolant guide notches one by one, and in the remaining 2N coolant through holes, each coolant connecting groove corresponds to two adjacent coolant through holes, and each coolant through hole is only connected to one coolant connecting groove; the motor housing is provided with coolant through hole connecting grooves that connect two adjacent coolant through holes corresponding to different coolant connecting grooves or one coolant through hole corresponding to the coolant connecting groove and the other coolant through hole corresponding to the coolant guide notch on the other side.
2. The cooling device in a reduction motor according to claim 1, characterized in that: The motor housing is provided with a plurality of heat-conducting columns on the back side of the bottom wall of the electric control installation chamber thereof.
3. The cooling device in the reduction motor according to claim 2, characterized in that: The heat-conducting columns are arranged in a mesh shape.
4. The cooling device in a reduction motor according to claim 1, characterized in that: The coolant through hole connection groove is arc-shaped and corresponds to the motor transmission chamber.
5. A cooling device in a reduction motor according to any one of claims 1 to 4, characterized in that: The extended length of the baffle is greater than half the width of the coolant inlet and outlet channel at the position where the baffle is located.
6. The cooling device in the reduction motor according to claim 5, characterized in that: The extended length of the baffle is less than or equal to two-thirds of the width of the coolant inlet and outlet channel at the location where the baffle is located.