Driving motor and vehicle

Abstract

The embodiment of the utility model relates to the technical field of motors, and discloses a driving motor and a vehicle, and the driving motor comprises a housing, a stator located in the housing, and a winding located on the stator. The winding comprises a plurality of winding groups, the plurality of winding groups are distributed along the circumferential direction of the stator, each winding group comprises a plurality of winding wires, and the winding wires in each winding group are distributed along the radial direction of the stator. The shell is provided with a cooling inlet, a cooling channel is arranged between at least two adjacent winding wires, and the cooling channel is communicated with the cooling inlet. The cooling channel is located between the two adjacent winding wires in the winding, and the cooling channel abuts against the winding wires on the stator, so that the cooling liquid in the cooling channel can be in direct contact with the heating winding, the cooling effect of the cooling liquid on the winding can be effectively improved, and the stability and reliability of electronic work are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive motors, in particular to a drive motor and a vehicle. Background Art

[0002] With the continuous development of social economy, cars, as the most commonly used means of transportation for people, are becoming more and more common in people's lives. Among them, new energy vehicles use motors as their power source, have the lowest cost, no exhaust emissions, and are environmentally friendly. As people's environmental awareness continues to increase, new energy vehicles are becoming more and more popular.

[0003] New energy vehicles usually include a drive motor, which is connected to the axle and can drive the axle to rotate so that the vehicle can travel. The drive motor includes a housing and a stator arranged in the housing. The stator has a winding. The motor winding will generate heat during operation. A cooling oil channel is provided on the outer periphery of the motor stator. Cooling oil is provided in the cooling oil channel. The cooling oil can dissipate heat and cool down the motor winding to ensure the normal operation of the motor.

[0004] However, in the above-mentioned drive motor, the cooling pipe is far away from the winding and the cooling efficiency is low. Utility Model Content

[0005] In view of this, the utility model provides a drive motor and a vehicle to solve the problem that in the existing drive motor, the cooling pipeline is far away from the winding and the cooling efficiency is low.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] A first aspect of the present application provides a driving motor, comprising a housing, a stator located in the housing, and a winding located on the stator;

[0008] The winding includes a plurality of winding groups, the plurality of winding groups are distributed along the circumference of the stator, and each of the winding groups includes a plurality of windings, and the windings in each winding group are distributed along the radial direction of the stator;

[0009] A cooling inlet is provided on the shell, and a cooling channel is provided between at least two adjacent windings, and the cooling channel is connected to the cooling inlet.

[0010] In the embodiment of the present application, the cooling channel is located between two adjacent windings in the winding, so that the cooling channel is close to the winding on the stator. In this way, the coolant in the cooling channel can directly contact the heated winding, which can effectively improve the cooling effect of the coolant on the winding, thereby effectively improving the stability and reliability of the electronic operation.

[0011] In a possible implementation, in a direction from close to the center of the stator to far from the center of the stator, the windings in each winding group are the first winding, the second winding, the third winding to the Nth winding in sequence, where 4≤N≥10;

[0012] The cooling channel is located between two adjacent windings.

[0013] In a possible implementation manner, the cooling channel is located between the first winding and the second winding.

[0014] In a possible implementation, a plurality of motor slots are provided on the stator, and the plurality of motor slot groups are distributed along the circumference of the stator;

[0015] The number of the motor slots is the same as the number of the winding groups, a plurality of the winding groups are respectively located in each of the motor slots, and the cooling channel is located in the motor slot.

[0016] In a possible implementation, it further includes an oil guide member, the oil guide member is located in the housing, and the oil guide member is sleeved on the winding at one end of the stator;

[0017] An oil guide channel is provided on the oil guide member, one end of the oil guide channel is connected to the cooling inlet on the shell, and the other end of the oil guide channel is connected to the cooling channel. The oil guide channel is used to guide the cooling oil flowing into the cooling inlet into the cooling channel.

[0018] In a possible implementation, the oil guide member has a first surface and a second surface opposite to each other, and a cavity is defined between the first surface and the second surface;

[0019] A first oil guide port is formed on the first surface of the oil guide member, and a second oil guide port is formed on the second surface, wherein both the first oil guide port and the second oil guide port are connected to the cavity;

[0020] The first oil guide port is communicated with the cooling inlet, the second oil guide port is communicated with the cooling channel, and the first oil guide port, the second oil guide port and the cavity together form the oil guide channel.

[0021] In a possible implementation, a fixing hole is further provided on the oil guide member, the fixing hole is communicated with the cavity, and the winding wire is passed through the fixing hole.

[0022] In a possible implementation, it further includes an oil deflector, the oil deflector is located at one end of the stator and surrounds the outer periphery of the winding, and the first oil guide port is located outside the oil deflector;

[0023] One end of the oil deflector is in contact with the stator, and the other end of the oil deflector is in contact with the inner wall of the housing.

[0024] In a possible implementation, an oil hole is provided on the oil retaining ring, one end of the oil hole is connected to the cooling inlet, and the other end of the oil hole is connected to the end of the winding.

[0025] In one possible implementation, the housing includes a shell and an end cover;

[0026] The end cover is disposed on one end of the shell, the stator is located in the shell, and the cooling inlet is located on the shell.

[0027] A second aspect of the present application provides a vehicle, comprising any of the drive motors described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A schematic diagram of the structure of a drive motor provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of a stator provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the structure of a winding provided in an embodiment of the present application;

[0032] Figure 4 An exploded view of a drive motor provided in an embodiment of the present application;

[0033] Figure 5 A cross-sectional view of a drive motor provided in an embodiment of the present application;

[0034] Figure 6 A front view of an oil guide member provided in an embodiment of the present application;

[0035] Figure 7 A schematic structural diagram of an oil guide member provided in an embodiment of the present application at a first viewing angle;

[0036] Figure 8 A rear view of an oil guide member provided in an embodiment of the present application;

[0037] Fig. 9A schematic diagram of the structure of an oil guide member provided in an embodiment of the present application under a second viewing angle;

[0038] Fig.10 A cross-sectional view of an oil guide member provided in an embodiment of the present application;

[0039] Fig.11 for Fig.10 Magnified view of area A in the middle.

[0040] Description of reference numerals:

[0041] 100-driving motor;

[0042] 110 - housing; 111 - shell; 1111 - cooling inlet; 1112 - first cooling outlet;

[0043] 112-end cover; 1121-second cooling outlet;

[0044] 120-stator; 121-cooling channel; 122-motor slot;

[0045] 130-winding; 131-winding group; 1311-winding;

[0046] 140 - oil guide member; 141 - oil guide channel; 142 - first surface; 1421 - first oil guide port;

[0047] 143- second surface; 1431- second oil guide port; 144- cavity; 145- fixing hole;

[0048] 150 - oil retaining ring; 151 - oil hole. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0050] The embodiment of the present application provides a drive motor and a vehicle including the drive motor, wherein the vehicle may be a car, a bus, or a truck. For example, the vehicle may be any one of an electric vehicle / electric vehicle (Electric Vehicle; referred to as EV), a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; referred to as PEV / BEV), a hybrid electric vehicle (Hybrid Electric Vehicle; referred to as HEV), a range extended electric vehicle (Range Extended Electric Vehicle; referred to as REEV), a plug-in hybrid electric vehicle (Plug-in Hybrid Electric Vehicle; referred to as PHEV), a new energy vehicle (New Energy Vehicle), and a fuel vehicle.

[0051] As described in the background technology above, the drive motor includes a housing and a stator arranged in the housing. The stator has a winding. The motor winding will generate heat during operation. A cooling oil channel is provided on the outer periphery of the motor stator. Cooling oil is provided in the cooling oil channel. The cooling oil can dissipate heat and cool down the motor winding to ensure the normal operation of the motor.

[0052] However, in the above-mentioned drive motor, the cooling pipe is far away from the winding and the cooling efficiency is low.

[0053] In order to solve the above problems, an embodiment of the present application provides a drive motor and a vehicle, in which a cooling channel is located between two adjacent windings in the winding, and the cooling channel is close to the winding on the stator. In this way, the coolant in the cooling channel can directly contact the heated winding, which can effectively improve the cooling effect of the coolant on the winding, thereby effectively improving the stability and reliability of the electronic operation.

[0054] The drive motor provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0055] Figure 1 A schematic diagram of the structure of a drive motor provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic diagram of the structure of a stator provided in an embodiment of the present application, Figure 3 A schematic diagram of the structure of a winding provided in an embodiment of the present application.

[0056] The present application embodiment provides a driving motor 100, see Figure 1 As shown, the driving motor 100 may include a housing 110, a stator 120 located in the housing 110, and a winding 130 located on the stator 120. Figure 2 and Figure 3As shown, the winding 130 may include winding groups 131, the plurality of winding groups 131 are distributed along the circumference of the stator 120, and each winding group 131 includes a plurality of windings 1311, and the windings 1311 in each winding group 131 are distributed along the radial direction of the stator 120;

[0057] The housing 110 may be provided with a cooling inlet 1111 (see Figure 4 As shown in FIG. 1 , at least two adjacent windings 1311 have a cooling channel 121, and the cooling channel 121 may be connected to the cooling inlet 1111. The cooling channel 121 may have a cooling liquid (e.g., cooling oil), and for example, the cooling oil may enter the cooling channel 121 through the cooling inlet 1111, so that the cooling liquid in the cooling channel 121 may dissipate heat and cool down the windings 130 on the stator 120.

[0058] For example, the housing 110 may include a housing 111 and an end cover 112, the end cover 112 may be covered on one end of the housing 111, the stator 120 may be located inside the housing 111, and the cooling inlet 1111 may be located on the housing 111. During the assembly of the drive motor 100, the stator 120 may be first installed in the housing 111, and then the end cover 112 may be installed on the housing 111. This may facilitate the assembly and disassembly of the drive motor 100.

[0059] A first cooling outlet 1112 may be provided at one end of the shell 111 facing the end cover 112 . The first cooling outlet 1112 may be connected to the cooling channel 121 . The cooling oil in the cooling channel 121 may flow out from the first cooling outlet 1112 to achieve circulation of the cooling oil.

[0060] In the embodiment of the present application, the cooling channel 121 is located between two adjacent windings 1311 in the winding 130, and the cooling channel 121 is close to the winding 1311 on the stator 120. In this way, the coolant in the cooling channel 121 can directly contact the heated winding 130, which can effectively improve the cooling effect of the coolant on the winding 130, thereby effectively improving the stability and reliability of the electronic operation.

[0061] Continue to see Figure 3 As shown, from the direction close to the center of the stator 120 to the direction away from the center of the stator 120, the windings 1311 in each winding group 131 can be the first winding, the second winding, the third winding to the Nth winding in sequence, where 4≤N≥10. For example, N can be 5, 6 or 8.

[0062] For example, see Figure 3As shown, taking N equal to 5 as an example, the windings 1311 in each winding group 131 may be the first winding 1311a, the second winding 1311b, the third winding 1311c, the fourth winding 1311d and the fifth winding 1311e in sequence. The cooling channel 121 may be located between the first winding 1311a and the second winding 1311b. Alternatively, the cooling channel 121 may also be located between the second winding 1311b and the third winding 1311c, or the cooling channel 121 may also be located between the third winding 1311c and the fourth winding 1311d, or, in some examples, the cooling channel 121 may also be located between the fourth winding 1311d and the fourth winding 1311e.

[0063] Preferably, the cooling channel 121 can be located between the first winding 1311a and the second winding 1311b. The skin effect at the first winding 1311a is more obvious and the heat density is relatively large. By setting the cooling channel 121 between the first winding 1311a and the second winding 1311b, the coolant in the cooling channel 121 can directly contact the first winding 1311a to cool the first winding 1311a, which can effectively improve the cooling effect on the first winding 1311a and improve the overall cooling efficiency of the motor.

[0064] Continue to see Figure 3 As shown, a plurality of motor slots 122 may be provided on the stator 120, and the plurality of motor slots 122 may be distributed along the circumference of the stator 120. The number of the motor slots 122 may be the same as the number of the winding groups 131, and the plurality of winding groups 131 may be respectively located in each motor slot 122, and the motor slots 122 may provide mounting holes for the winding groups 131 to fix the winding groups 131, which may effectively reduce or prevent the winding groups 131 from falling off, and help improve the firmness and reliability of the winding groups 131 on the stator 120.

[0065] The cooling channel 121 may be located in the motor slot 122. For example, the portion of the motor slot 122 where the cooling channel 121 is required to be provided may be vacated so that the coolant may enter the cooling channel 121. For example, taking the cooling channel 121 located between the first winding 1311a and the second winding 1311b as an example, when the winding group 131 is provided in the motor slot 122, the motor slot 122 between the first winding 1311a and the second winding 1311b may be vacated to form the cooling channel 121, so that the coolant in the cooling channel 121 may cool the winding group 131.

[0066] Figure 4 An exploded view of a drive motor provided in an embodiment of the present application, Figure 5 A cross-sectional view of a drive motor provided in an embodiment of the present application.

[0067] See also Figure 4 and Figure 5 As shown, the drive motor 100 may further include an oil guide member 140, which may be located inside the housing 110, and may be sleeved on the winding 130 at one end of the stator 120, and an oil guide channel 141 may be provided on the oil guide member 140, one end of the oil guide channel 141 may be connected to a cooling inlet 1111 on the housing 110, and the other end may be connected to the cooling channel 121, and the oil guide channel 141 may be used to guide the cooling oil flowing into the cooling inlet 1111 into the cooling channel 121.

[0068] The oil guide 140 can limit the flow direction of the cooling oil so that the coolant can flow into the cooling channel 121 in a preset direction. This can effectively reduce or avoid the accuracy of the cooling oil flow and help improve the cooling effect of the coolant on the drive motor 100.

[0069] Figure 6 This is a front view of an oil guide member provided in an embodiment of the present application. Figure 7 A schematic diagram of the structure of an oil guide member provided in an embodiment of the present application at a first viewing angle, Figure 8 This is a rear view of an oil guide member provided in an embodiment of the present application. Fig. 9 A schematic diagram of the structure of an oil guide member provided in an embodiment of the present application at a second viewing angle, Fig.10 A cross-sectional view of an oil guide member provided in an embodiment of the present application, Fig.11 for Fig.10 Magnified view of area A in the middle.

[0070] For example, see Figure 6 , Figure 7 , Figure 8 as well as Fig. 9 As shown, the oil guide member 140 may have a first surface 142 and a second surface 143 opposite to each other. Fig.10 and Fig.11 As shown, there may be a cavity 144 between the first surface 142 and the second surface 143. The first surface 142 of the oil guide member 140 may have a first oil guide port 1421, and the second surface 143 may have a second oil guide port 1431, and both the first oil guide port 1421 and the second oil guide port 1431 may be connected to the cavity 144.

[0071] The first oil guide port 1421 may be communicated with the cooling inlet 1111 on the housing 110, the second oil guide port 1431 may be communicated with the cooling channel 121, and the first oil guide port 1421, the second oil guide port 1431 and the cavity 144 together form the above-mentioned oil guide channel 141. For example, the winding group 131 may be arranged in the second oil guide port 1431, so that the second oil guide port 1431 can be communicated with the cooling channel 121 in the winding group 131.

[0072] After entering the cooling inlet 1111 of the housing 110, the cooling oil may first flow into the first oil guide port 1421, and then enter the cavity 144 through the first oil guide port 1421. After entering the cavity 144, the cooling liquid may flow out from the second oil guide port 1431 and flow into the cooling channel 121 to cool the winding group 131.

[0073] The oil guide plate has a simple structure and reliable oil guide, which can make the cooling oil flow into the cooling channel 121 quickly and smoothly, and can effectively reduce or prevent the cooling oil from flowing into other places, which helps to improve the reliability and stability of the cooling oil flow, thereby effectively improving the cooling effect of the drive motor 100.

[0074] Continue to see Fig. 9 As shown, the oil guide member 140 may also be provided with a fixing hole 145, and the fixing hole 145 may be located on the first surface 142 of the oil guide member 140. The fixing hole 145 may be connected to the cavity 144, and the winding 1311 may be inserted into the fixing hole 145. The fixing hole 145 may limit and fix the winding group 131, which may reduce or avoid misalignment between the oil guide member 140 and the winding 130, and help improve the reliability and stability of the matching between the winding 130 and the oil guide member 140.

[0075] For example, see Fig. 9 As shown, the fixing hole 145 may include a first fixing hole 145 and a second fixing hole 145, and there may be a gap between the first fixing hole 145 and the second fixing hole 145. The winding wire 1311 on one side of the cooling channel 121 may be inserted into the first fixing hole 145, and the winding wire 1311 on the other side of the cooling channel 121 may be inserted into the second fixing hole 145.

[0076] For example, taking the cooling channel 121 located at the first winding 1311a and the second winding 1311b as an example, the first winding 1311a can be inserted into the first fixing hole 145, and the second winding 1311b, the third winding 1311c, the fourth winding 1311d and the fifth winding 1311e can be inserted into the second fixing hole 145. The interval between the first fixing hole 145 and the second fixing hole 145 can shield the cooling oil to reduce or prevent the cooling oil from flowing out from the area between the first winding 1311a and the second winding 1311b, which is conducive to improving the reliability and stability of the cooling oil flow.

[0077] Continue to see Figure 4 and Figure 5 As shown, the drive motor 100 may further include an oil deflector 150, which may be located at one end of the stator 120 and surrounded by the outer periphery of the winding 130, and the first oil guide port 1421 may be located outside the oil deflector 150. One end of the oil deflector 150 may abut against the stator 120, and the other end may abut against the inner wall of the housing 110. After the cooling oil enters the motor housing 110 from the cooling inlet 1111, it may enter the cavity 144 of the oil guide member 140 from the first oil guide port 1421 located outside the oil deflector 150, so as to enter the cooling channel 121.

[0078] The oil retaining ring 150 can limit the flow direction of the cooling oil so that the cooling oil flows in a preset direction, which can reduce or avoid a large amount of cooling oil not entering the cavity 144 of the oil guide member 140 but flowing into other parts, and can effectively improve the reliability of the cooling oil flow.

[0079] Continue to see Figure 4 and Figure 5 As shown, an oil hole 151 can be opened on the oil retaining ring 150, one end of the oil hole 151 can be connected to the cooling inlet 1111, and the other end can be connected to the end of the winding 130. After the cooling oil enters the housing 110 from the cooling inlet 1111, part of the cooling oil can enter the end of the winding 130 through the oil hole 151 to cool the end of the winding 130.

[0080] A second cooling outlet 1121 may be provided on the housing 111, and the second cooling outlet 1121 may be connected to the end of the winding 130. The cooling oil flowing to the end of the winding 130 through the oil hole 151 on the oil retaining ring 150 may flow out from the second cooling outlet 1121 to realize the circulation of the cooling oil.

[0081] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more groups.

[0082] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0083] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0084] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0085] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0086] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A driving motor, characterized in that: It comprises a housing, a stator located in the housing, and a winding located on the stator; The winding includes a plurality of winding groups, the plurality of winding groups are distributed along the circumference of the stator, and each of the winding groups includes a plurality of windings, and the windings in each winding group are distributed along the radial direction of the stator; A cooling inlet is provided on the shell, and a cooling channel is provided between at least two adjacent windings, and the cooling channel is connected to the cooling inlet.

2. The drive motor according to claim 1, characterized in that: From the direction close to the center of the stator to the direction away from the center of the stator, the windings in each winding group are the first winding, the second winding, the third winding to the Nth winding in sequence, wherein 4≤N≥10; The cooling channel is located between two adjacent windings.

3. The drive motor according to claim 2, characterized in that: The cooling channel is located between the first winding and the second winding.

4. The drive motor according to any one of claims 1 to 3, characterized in that: The stator is provided with a plurality of motor slots, and the plurality of motor slots are distributed along the circumference of the stator; The number of the motor slots is the same as the number of the winding groups, a plurality of the winding groups are respectively located in each of the motor slots, and the cooling channel is located in the motor slot.

5. The drive motor according to any one of claims 1 to 3, characterized in that: It also includes an oil guide member, which is located in the housing and is sleeved on the winding at one end of the stator; An oil guide channel is provided on the oil guide member, one end of the oil guide channel is connected to the cooling inlet on the shell, and the other end of the oil guide channel is connected to the cooling channel. The oil guide channel is used to guide the cooling oil flowing into the cooling inlet into the cooling channel.

6. The driving motor according to claim 5, characterized in that: The oil guide member has a first surface and a second surface opposite to each other, and a cavity is formed between the first surface and the second surface; A first oil guide port is formed on the first surface of the oil guide member, and a second oil guide port is formed on the second surface, wherein both the first oil guide port and the second oil guide port are connected to the cavity; The first oil guide port is communicated with the cooling inlet, the second oil guide port is communicated with the cooling channel, and the first oil guide port, the second oil guide port and the cavity together form the oil guide channel.

7. The driving motor according to claim 6, characterized in that: The oil guide member is also provided with a fixing hole, the fixing hole is communicated with the cavity, and the winding wire is passed through the fixing hole.

8. The drive motor according to claim 6 or 7, characterized in that: It also includes an oil deflector, which is located at one end of the stator and surrounds the outer periphery of the winding, and the first oil guide port is located outside the oil deflector; One end of the oil deflector is in contact with the stator, and the other end of the oil deflector is in contact with the inner wall of the housing.

9. The driving motor according to claim 8, characterized in that: An oil hole is provided on the oil retaining ring, one end of the oil hole is connected to the cooling inlet, and the other end of the oil hole is connected to the end of the winding.

10. A vehicle, characterized in that: It comprises the drive motor described in any one of claims 1 to 9.

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