Water-cooled motor jacket and motor

Abstract

The application discloses a water-cooled motor sleeve and a motor, and relates to the technical field of motors. The water-cooled motor sleeve comprises an inner shell, an outer sleeve, a blocking strip, a stop rib and two sealing rings. The outer sleeve is sleeved on the outer shell, and is arranged at intervals from the inner shell. The two sealing rings are oppositely arranged, and are connected between the outer sleeve and the inner shell. The outer sleeve, the inner shell and the two sealing rings jointly enclose a water-cooled cavity. The stop rib is connected between the two sealing rings, and is connected between the outer sleeve and the inner shell. The blocking strip is connected between the outer sleeve and the inner shell, and is connected with the stop rib, so as to divide the water-cooled cavity into two water flow channels arranged outside the inner shell. The water flow channels comprise water inlet channels and water outlet channels. The length of the water inlet channels is equal to the length of the water outlet channels. The cross-sectional area of the water inlet channels is greater than the cross-sectional area of the water outlet channels. The water-cooled motor sleeve can ensure uniform cooling around the motor body, so as to ensure the performance of the motor body, has good cooling effect and high safety.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a water-cooled motor sleeve and a motor. Background Technology

[0002] Currently, motors, electronic control systems, and battery systems are core components of new energy vehicles. Among them, the motor is the drive unit, and ensuring its safe and stable operation is crucial. Motors generate a large amount of heat under load, especially full load. If this heat is not dissipated in time, it can cause insulation failure or even burnout. Currently, water cooling is commonly used to cool motors, with cooling water flowing through cooling channels located outside the motor. However, because the cooling water continuously absorbs heat from the motor as it flows through the channels, the temperature of the cooling water in the latter half of the channel tends to be higher. This affects the cooling effect on the motor side corresponding to the latter half of the channel, leading to uneven cooling around the motor, impacting motor performance, and potentially causing safety accidents.

[0003] In view of this, designing and manufacturing a water-cooled motor sleeve with good cooling effect and a motor is particularly important in motor production. Summary of the Invention

[0004] The purpose of this invention is to provide a water-cooled motor sleeve that can ensure uniform cooling around the motor body, thereby ensuring the performance of the motor body, with good cooling effect and strong safety.

[0005] Another objective of this invention is to provide an electric motor that ensures uniform cooling around the motor body, thereby guaranteeing the performance of the motor body, providing good cooling effect, and enhancing safety.

[0006] The present invention is achieved by the following technical solution.

[0007] A water-cooled motor housing includes an inner shell, an outer shell, a plug strip, a stop rib, and two sealing rings. The outer shell is fitted over the inner shell and spaced apart from it. The two sealing rings are positioned opposite each other and connected between the outer shell and the inner shell. The outer shell, inner shell, and two sealing rings together form a water-cooled cavity. The stop rib connects between the two sealing rings and between the outer shell and the inner shell. The plug strip connects between the outer shell and the inner shell and is connected to the stop rib, thus dividing the water-cooled cavity to form two water flow channels ringed around the inner shell. The water flow channels include an inlet channel and an outlet channel. The length of the inlet channel is equal to the length of the outlet channel, and the cross-sectional area of ​​the inlet channel is larger than that of the outlet channel. The inlet channel is used to supply cooling water to cool the motor body.

[0008] Optionally, the ratio of the cross-sectional area of ​​the inlet channel to the cross-sectional area of ​​the outlet channel ranges from 2 to 14.

[0009] Optionally, the plugging strip includes a connecting part and two water-blocking parts. One water-blocking part is connected to the other water-blocking part through the connecting part. The ends of the two water-blocking parts away from the connecting part are connected to the stop rib. A water inlet channel is formed between one side of the water-blocking part and a sealing ring, and a water outlet channel is formed between the other side of the water-blocking part and another sealing ring.

[0010] Optionally, the water-blocking part extends circumferentially along the inner shell, the connecting part extends axially along the inner shell, and the stop rib extends axially along the inner shell.

[0011] Optionally, the water-cooled motor sleeve also includes multiple guide ribs, all of which are disposed within the water inlet channel and connected between the outer shell and the inner shell. The guide ribs extend axially along the inner shell, and the multiple guide ribs are used to divide the water inlet channel into a water-cooling flow channel.

[0012] Optionally, the length of the water-cooled channel is greater than the length of the water outlet channel, and the cross-sectional area of ​​the water-cooled channel is equal to the cross-sectional area of ​​the water outlet channel.

[0013] Optionally, the water-cooled motor housing also includes multiple flow guide ribs, each of which is disposed between two adjacent flow guide ribs. The flow guide ribs extend axially along the inner shell and are used to guide and pressurize the cooling water in the water-cooled flow channel to increase speed.

[0014] Optionally, the cross-sectional area at both ends of the drainage rib is smaller than the cross-sectional area in the middle of the drainage rib.

[0015] Optionally, the inner shell is integrally formed with the outer shell through stop ribs and flow guide ribs, and the plug strip and two sealing rings are welded between the inner shell and the outer shell.

[0016] An electric motor includes a motor body and the aforementioned water-cooled motor sleeve. The water-cooled motor sleeve includes an inner shell, an outer shell, a plug, a stop rib, and two sealing rings. The outer shell is fitted over the inner shell and spaced apart from it. The inner shell is fitted over the motor body. The two sealing rings are arranged opposite each other and are both connected between the outer shell and the inner shell. The outer shell, the inner shell, and the two sealing rings together form a water-cooled cavity. The stop rib is connected between the two sealing rings and between the outer shell and the inner shell. The plug is connected between the outer shell and the inner shell and is connected to the stop rib to divide the water-cooled cavity into two water flow channels. The water flow channels include an inlet channel and an outlet channel. The length of the inlet channel is equal to the length of the outlet channel, and the cross-sectional area of ​​the inlet channel is larger than the cross-sectional area of ​​the outlet channel. The inlet channel is used to supply cooling water to cool the motor body.

[0017] The water-cooled motor sleeve and motor provided by this invention have the following beneficial effects:

[0018] The water-cooled motor sleeve provided by this invention has an outer sleeve fitted over an inner shell, spaced apart from the inner shell. Two sealing rings are positioned opposite each other and connected between the outer sleeve and the inner shell. The outer sleeve, inner shell, and two sealing rings together form a water-cooled cavity. A stop rib connects between the two sealing rings and between the outer sleeve and the inner shell. A plug connects between the outer sleeve and the inner shell and is connected to the stop rib, thus dividing the water-cooled cavity into two water flow channels encircling the inner shell. Each water flow channel includes an inlet channel and an outlet channel. The length of the inlet channel is equal to the length of the outlet channel, and the cross-sectional area of ​​the inlet channel is larger than that of the outlet channel. The inlet channel is used to supply cooling water to cool the motor body. Compared with the prior art, the water-cooled motor sleeve provided by this invention, due to the use of a plug dividing the water-cooled cavity into two water flow channels and an inlet channel with a larger cross-sectional area than the outlet channel, can ensure uniform cooling around the motor body, thereby ensuring the performance of the motor body, providing good cooling effect and strong safety.

[0019] The motor provided by this invention includes a water-cooled motor sleeve, which can ensure uniform cooling around the motor body, thereby ensuring the performance of the motor body, with good cooling effect and strong safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the water-cooled motor sleeve provided in an embodiment of the present invention;

[0022] Figure 2 An explosion attempt of a water-cooled motor sleeve provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection between the inner shell and the plug strip in a water-cooled motor sleeve provided in an embodiment of the present invention;

[0024] Figure 4 This is a structural schematic diagram from another perspective showing the connection between the inner shell and the plug strip in the water-cooled motor sleeve provided in an embodiment of the present invention.

[0025] Icons: 100-Water-cooled motor sleeve; 110-Inner shell; 120-Outer shell; 130-Blocking strip; 131-Connecting part; 132-Water blocking part; 140-Stop rib; 150-Sealing ring; 160-Guide rib; 170-Drainage rib; 180-Inlet nozzle; 190-Outlet nozzle; 200-Water-cooled cavity; 210-Water flow channel; 211-Inlet channel; 212-Outlet channel; 213-Water-cooled flow channel. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0032] Please refer to the reference. Figures 1 to 4 This invention provides a motor (not shown) for implementing a driving function. It ensures uniform cooling around the motor body (not shown), thereby guaranteeing the performance of the motor body, providing good cooling effect and strong safety.

[0033] It should be noted that the motor includes a motor body and a water-cooled motor sleeve 100. The water-cooled motor sleeve 100 is fitted outside the motor body. The motor body is used for driving and generates a lot of heat. The water-cooled motor sleeve 100 is used to cool the motor body with water to ensure uniform cooling around the motor body, thereby ensuring the performance of the motor body, with good cooling effect and strong safety.

[0034] The water-cooled motor housing 100 includes an inner shell 110, an outer shell 120, a plug strip 130, a stop rib 140, two sealing rings 150, multiple guide ribs 160, multiple drainage ribs 170, two water inlets 180, and two water outlets 190. The outer shell 120 is fitted over the inner shell 110 and spaced apart from it. The two sealing rings 150 are positioned opposite each other and connected between the outer shell 120 and the inner shell 110. The outer shell 120, inner shell 110, and two sealing rings 150 together form a water-cooled cavity 200 for the flow of cooling water. The inner shell 110 is fitted over the motor body. Heat emitted by the motor body is transferred to the inner shell 110. The cooling water in the water-cooled cavity 200 carries away the heat transferred to the inner shell 110, thereby reducing its temperature and cooling the motor body. The stop rib 140 is connected between the two sealing rings 150 and between the outer shell 120 and the inner shell 110. The stop rib 140 is used to isolate the water-cooled cavity 200 to prevent cooling water from circulating within the water-cooled cavity 200. The block rib 130 is connected between the outer shell 120 and the inner shell 110 and is connected to the stop rib 140 to divide the water-cooled cavity 200 into two independent water flow channels 210 arranged around the inner shell 110. A portion of the cooling water flows in one water flow channel 210 and another portion flows in the other water flow channel 210. Both portions of cooling water simultaneously achieve the cooling function of the motor body, resulting in good cooling effect.

[0035] Specifically, the water flow channel 210 includes an inlet channel 211 and an outlet channel 212. Cooling water flows from the inlet channel 211 to the outlet channel 212. Since the cooling water continuously absorbs heat from the motor body during its flow within the water flow channel 210, the temperature of the cooling water is lower and the cooling effect is better during its flow within the inlet channel 211; the temperature of the cooling water is higher and the cooling effect is worse during its flow within the outlet channel 212. Therefore, in this invention, the water-cooled cavity 200 is divided into two water flow channels 210 by a blocking strip 130. The two inlet channels 211 are positioned opposite each other on both sides of the inner shell 110, and the two outlet channels 212 are positioned opposite each other on both sides of the inner shell 110. The inlet channels 211 are used to supply cooling water to cool the motor body, and the outlet channels 212 are used to quickly discharge the cooling water whose temperature has risen within the inlet channels 211. In this way, both sides of the inner shell 110 can be efficiently cooled simultaneously, ensuring uniform cooling around the motor body, thereby guaranteeing the performance of the motor body, providing good cooling effect, and enhancing safety.

[0036] Furthermore, the length of the inlet channel 211 is equal to the length of the outlet channel 212, meaning that both the inlet channel 211 and the outlet channel 212 are semi-circular to ensure the cooling effect of the cooling water within the two inlet channels 211. The cross-sectional area of ​​the inlet channel 211 is larger than that of the outlet channel 212 to increase the coverage area of ​​the inlet channel 211, thereby increasing the range of water cooling effect.

[0037] In this embodiment, the water-cooled cavity 200 is arranged in a ring shape, and the axial height of the water-cooled cavity 200 is greater than the axial height of the motor body. This ensures that the position of the motor body corresponds to the position of the water inlet channel 211, and that the position of the motor body is offset from the position of the water outlet channel 212. In this way, the motor body is completely covered by the two water inlet channels 211, but not by the two water outlet channels 212, so as to further improve the cooling effect and ensure uniform cooling around the motor body.

[0038] It should be noted that both inlet nozzles 180 and two outlet nozzles 190 are installed outside the outer casing 120. Each inlet nozzle 180 is connected to an inlet channel 211 and is located at the end of the inlet channel 211 away from the outlet channel 212. Each outlet nozzle 190 is connected to an outlet channel 212 and is located at the end of the outlet channel 212 away from the inlet channel 211. The inlet nozzles 180 are used to introduce cooling water into the inlet channel 211, and the outlet nozzles 190 are used to discharge the cooling water from the outlet channel 212.

[0039] It is worth noting that the ratio of the cross-sectional area of ​​the inlet channel 211 to the cross-sectional area of ​​the outlet channel 212 ranges from 2 to 14. A reasonable ratio of the cross-sectional area of ​​the inlet channel 211 to the outlet channel 212 can improve drainage efficiency while ensuring cooling effect and avoid excessive water pressure in the water flow channel 210. In this embodiment, the ratio of the cross-sectional area of ​​the inlet channel 211 to the cross-sectional area of ​​the outlet channel 212 is 8, but it is not limited to this. In other embodiments, the ratio of the cross-sectional area of ​​the inlet channel 211 to the cross-sectional area of ​​the outlet channel 212 can be 2 or 14. There is no specific limitation on the value of the ratio of the cross-sectional area of ​​the inlet channel 211 to the cross-sectional area of ​​the outlet channel 212.

[0040] The blocking strip 130 includes a connecting portion 131 and two blocking portions 132. One blocking portion 132 is connected to the other blocking portion 132 via the connecting portion 131, and the ends of both blocking portions 132 away from the connecting portion 131 are connected to the stop rib 140. A water inlet channel 211 is formed between one side of the blocking portion 132 and a sealing ring 150, and a water outlet channel 212 is formed between the other side of the blocking portion 132 and another sealing ring 150. The water inlet channel 211 and the water outlet channel 212 formed by the blocking portion 132 are connected one-to-one with the water outlet channel 212 and the water inlet channel 211 formed by the other blocking portion 132, to form two water flow channels 210.

[0041] In this embodiment, the water-blocking part 132 extends circumferentially along the inner shell 110, the connecting part 131 extends axially along the inner shell 110, and the stop rib 140 extends axially along the inner shell 110 to facilitate production and processing.

[0042] It should be noted that multiple guide ribs 160 are all disposed within the water inlet channel 211 and are all connected between the outer shell 120 and the inner shell 110. The guide ribs 160 extend axially along the inner shell 110, and the multiple guide ribs 160 are used to divide the water inlet channel 211 into a water-cooled flow channel 213. The guide ribs 160 are used to guide the cooling water so that the cooling water flows along the water-cooled flow channel 213, thereby increasing the flow rate of the cooling water, improving the cooling efficiency, and enhancing the cooling effect.

[0043] In this embodiment, since multiple guide ribs 160 divide the inlet channel 211 into a water-cooled flow channel 213, and the length of the inlet channel 211 is equal to the length of the outlet channel 212, the length of the water-cooled flow channel 213 is greater than the length of the outlet channel 212. Specifically, the cross-sectional area of ​​the water-cooled flow channel 213 is equal to the cross-sectional area of ​​the outlet channel 212 to ensure that the flow velocity and water pressure of the cooling water do not change when it flows from the water-cooled flow channel 213 into the outlet channel 212, thereby improving the stability of the cooling water flow and ensuring that the cooling water can be discharged smoothly and quickly through the outlet channel 212.

[0044] It is worth noting that each flow guide rib 170 is disposed between two adjacent flow guide ribs 160, that is, each flow guide rib 170 is disposed within a section of the water-cooled flow channel 213. The flow guide rib 170 extends axially along the inner shell 110 and is used to guide and pressurize the cooling water in the water-cooled flow channel 213 to further increase the flow rate of the cooling water in the water-cooled flow channel 213, improve cooling efficiency, and enhance the cooling effect.

[0045] In this embodiment, the cross-sectional area at both ends of the flow guide rib 170 is smaller than that at the middle of the flow guide rib 170 to enhance the flow guidance and pressurization acceleration effect. During the flow of cooling water in the water-cooled flow channel 213, it first flows from one end of the flow guide rib 170 to the middle of the flow guide rib 170, and then from the middle of the flow guide rib 170 to the other end of the flow guide rib 170. In this process, the flow guide rib 170 first divides the cooling water into two parts, and then makes the two parts of cooling water converge together to increase the flow rate of the cooling water, thereby improving the cooling efficiency.

[0046] In this embodiment, the inner shell 110 is integrally formed with the outer shell 120 through the stop ribs 140 and the flow guide ribs 160 to improve the connection strength. The plug strip 130 and two sealing rings 150 are welded between the inner shell 110 and the outer shell 120 to improve the sealing performance, avoid leakage due to the decline in sealing performance after long-term use, and realize the integration of the entire water-cooled motor sleeve 100, thereby improving the service life of the water-cooled motor sleeve 100.

[0047] The water-cooled motor sleeve 100 provided in this embodiment of the invention has an outer sleeve 120 fitted over an inner shell 110 and spaced apart from the inner shell 110. Two sealing rings 150 are positioned opposite each other and connected between the outer sleeve 120 and the inner shell 110. The outer sleeve 120, the inner shell 110, and the two sealing rings 150 together form a water-cooled cavity 200. A stop rib 140 is connected between the two sealing rings 150 and between the outer sleeve 120 and the inner shell 110. A stop strip 130 is connected to... Between the outer shell 120 and the inner shell 110, and connected to the stop rib 140, the water-cooled cavity 200 is divided into two water flow channels 210 annularly arranged outside the inner shell 110. Each water flow channel 210 includes an inlet channel 211 and an outlet channel 212. The length of the inlet channel 211 is equal to the length of the outlet channel 212, and the cross-sectional area of ​​the inlet channel 211 is larger than that of the outlet channel 212. The inlet channel 211 is used to supply cooling water to cool the motor body. Compared with the prior art, the water-cooled motor sleeve 100 provided by this invention, due to the use of the stop rib 130 that divides the water-cooled cavity 200 into two water flow channels 210 and the inlet channel 211 with a cross-sectional area larger than that of the outlet channel 212, can ensure uniform cooling around the motor body, thereby ensuring the performance of the motor body, providing good cooling effect and strong safety. This results in high motor durability and reliable safety.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water-cooled motor sleeve, characterized in that, The system includes an inner shell (110), an outer shell (120), a plug strip (130), a stop rib (140), and two sealing rings (150). The outer shell (120) is fitted over the inner shell (110) and spaced apart from it. The two sealing rings (150) are positioned opposite each other and connected between the outer shell (120) and the inner shell (110). The outer shell (120), the inner shell (110), and the two sealing rings (150) together form a water-cooled cavity (200). The stop rib (140) is connected between the two sealing rings (150) and between the outer shell (120) and the inner shell (110). Between 10), the plug (130) is connected between the outer shell (120) and the inner shell (110), and is connected to the stop rib (140) to divide the water-cooled cavity (200) into two water flow channels (210) arranged around the inner shell (110). The water flow channel (210) includes an inlet channel (211) and an outlet channel (212). The length of the inlet channel (211) is equal to the length of the outlet channel (212). The cross-sectional area of ​​the inlet channel (211) is greater than the cross-sectional area of ​​the outlet channel (212). The inlet channel (211) is used to supply cooling water to cool the motor body. The water-cooled motor sleeve also includes a plurality of flow guide ribs (160), which are all disposed in the water inlet channel (211) and are all connected between the outer shell (120) and the inner shell (110). The flow guide ribs (160) extend along the axial direction of the inner shell (110), and the plurality of flow guide ribs (160) are used to divide the water inlet channel (211) into a water-cooled flow channel (213). The length of the water-cooled channel (213) is greater than the length of the water outlet channel (212), and the cross-sectional area of ​​the water-cooled channel (213) is equal to the cross-sectional area of ​​the water outlet channel (212). The water-cooled motor sleeve also includes a plurality of flow guide ribs (170), each of the flow guide ribs (170) being disposed between two adjacent flow guide ribs (160), the flow guide ribs (170) extending along the axial direction of the inner shell (110), the flow guide ribs (170) being used to guide and pressurize the cooling water in the water-cooled flow channel (213) to increase speed; The cross-sectional area at both ends of the drainage rib (170) is smaller than the cross-sectional area at the middle of the drainage rib (170).

2. The water-cooled motor sleeve according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the water inlet channel (211) to the cross-sectional area of ​​the water outlet channel (212) ranges from 2 to 14.

3. The water-cooled motor sleeve according to claim 1, characterized in that, The blocking strip (130) includes a connecting part (131) and two water-blocking parts (132). One water-blocking part (132) is connected to the other water-blocking part (132) through the connecting part (131). The ends of the two water-blocking parts (132) away from the connecting part (131) are connected to the stop rib (140). One side of the water-blocking part (132) forms the water inlet channel (211) between it and one of the sealing rings (150), and the other side of the water-blocking part (132) forms the water outlet channel (212) between it and the other sealing ring (150).

4. The water-cooled motor sleeve according to claim 3, characterized in that, The water-blocking part (132) extends circumferentially along the inner shell (110), the connecting part (131) extends axially along the inner shell (110), and the stop rib (140) extends axially along the inner shell (110).

5. The water-cooled motor sleeve according to claim 1, characterized in that, The inner shell (110) is integrally formed with the outer shell (120) through the stop rib (140) and the flow guide rib (160), and the plug strip (130) and the two sealing rings (150) are welded between the inner shell (110) and the outer shell (120).

6. An electric motor, characterized in that, It includes a motor body and a water-cooled motor sleeve as described in any one of claims 1 to 5, wherein the inner shell (110) is sleeved on the motor body.

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