Motor cooling system

Abstract

The invention discloses a motor cooling system which comprises a motor stator, a stator cooling pipeline and a heat exchanger. In the motor stators, a first stator comprises n first strip-shaped bulges, a second stator comprises 2n second strip-shaped bulges, and a third stator comprises n third strip-shaped bulges; the second strip-shaped bulge comprises a first sub-strip-shaped bulge and a second sub-strip-shaped bulge; the first strip-shaped protrusion is located on the side, away from the third stator, of the first sub strip-shaped protrusion, and the third strip-shaped protrusion is located on the side, away from the first stator, of the second sub strip-shaped protrusion. In the stator cooling pipeline, a first branch is located between a first sub-strip-shaped protrusion and a second sub-strip-shaped protrusion; the second branch part is located on the side, away from the third stator, of the second sub-strip-shaped protrusion. The third branch part is located on the side, away from the first stator, of the first sub-strip-shaped protrusion. The heat exchanger is connected with the stator cooling pipeline, and the refrigerant dissipates heat to the air through the heat exchanger. By adjusting the shape of the stator cooling pipeline, the fitting condition of the stator cooling pipeline and the motor stator is ensured, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor cooling, and in particular to a motor cooling system. Background Art

[0002] With the continuous development of industry, the heat dissipation of drive motors plays a vital role in many fields, such as new energy vehicles. However, the heat dissipation efficiency of drive motors is limited due to many factors such as cooling medium and cooling structure. In the case of poor heat dissipation, the motor will be damaged during use. These factors will have an adverse effect on the performance and life of the motor, and thus affect the use of related equipment. Summary of the invention

[0003] The embodiment of the present invention provides a motor cooling system, which adjusts the shape of a stator cooling pipe to ensure the fit between the stator cooling pipe and the motor stator, thereby improving the heat dissipation effect.

[0004] An embodiment of the present invention provides a motor cooling system, comprising a motor stator and a cooling pipeline, wherein the cooling pipeline comprises a stator cooling pipeline and a heat exchanger, and a refrigerant is transmitted in the cooling pipeline;

[0005] The motor stator comprises a first stator, a second stator and a third stator; along the first direction, the first stator and the third stator are located on both sides of the second stator; the first stator comprises a first base and n first strip-shaped protrusions located on the first base, the second stator comprises a second base and 2n second strip-shaped protrusions located on the second base, and the third stator comprises a third base and n third strip-shaped protrusions located on the third base; the first strip-shaped protrusion, the second strip-shaped protrusion and the third strip-shaped protrusion all extend along the first direction, The first strip protrusion, the second strip protrusion and the third strip protrusion have the same width along the second direction; wherein the second strip protrusion includes a first sub-strip protrusion and a second sub-strip protrusion, and along the second direction, the first sub-strip protrusion is located between two second sub-strip protrusions, and the second sub-strip protrusion is located between two first sub-strip protrusions; the first strip protrusion is located on a side of the first sub-strip protrusion away from the third stator, and the third strip protrusion is located on a side of the second sub-strip protrusion away from the first stator; n is a positive integer;

[0006] The stator cooling pipe is attached to the motor stator and the refrigerant in the stator cooling pipe is used to absorb the heat generated by the motor stator; the stator cooling pipe includes a first sub-section, a second sub-section and a third sub-section; along the second direction, the first sub-section is located between the first sub-strip protrusion and the second sub-strip protrusion; the second sub-section is located on a side of the second sub-strip protrusion away from the third stator, and is connected to two adjacent first sub-sections; the third sub-section is located on a side of the first sub-strip protrusion away from the first stator, and is connected to two adjacent first sub-sections;

[0007] The heat exchanger is connected to the stator cooling pipe, and the refrigerant dissipates heat into the air through the heat exchanger; the first direction is perpendicular to the second direction.

[0008] Optionally, a minimum distance between the stator cooling pipe and the motor stator is d, satisfying: 0≤d≤2mm.

[0009] Optionally, along the first direction, the length of the first stator is the same as the length of the first strip-shaped protrusion, the length of the second stator is the same as the length of the second strip-shaped protrusion, and the length of the third stator is the same as the length of the third strip-shaped protrusion.

[0010] Optionally, along the first direction, a distance between a side of the second subsection away from the second stator and the second stator is L1, a length of the first stator is L2, and the following is satisfied: |L1-L2| / L2≤20%;

[0011] Along the first direction, the length of the first section is L3, and the length of the second stator is L4, satisfying: |L3-L4| / L4≤20%;

[0012] Along the first direction, a distance between the side of the third section away from the second stator and the second stator is L4, and a length of the third stator is L6, satisfying: |L5-L6| / L6≤20%.

[0013] Optionally, the distance from the first strip-shaped protrusion to the first base is s1, the distance from the second strip-shaped protrusion to the second base is s2, and the distance from the third strip-shaped protrusion to the third base is s3;

[0014] The distance from the second subsection to the first base is s4, the distance from the first subsection to the second base is s5, and the distance from the third subsection to the third base is s6;

[0015] It satisfies that 0<(s4-s1) / s1≤20%, 0<(s5-s2) / s2≤20%, 0<(s6-s3) / s3≤20%.

[0016] Optionally, the material of the stator cooling pipe includes silicon steel sheet.

[0017] Optionally, the cooling pipeline further includes a circulation pump, and the circulation pump is located on a side of the heat exchanger away from the stator cooling pipeline.

[0018] Optionally, the cooling pipeline further includes a flow control unit; the flow control unit is used to control the flow of the refrigerant in the cooling pipeline.

[0019] Optionally, the flow control unit includes a solenoid valve.

[0020] Optionally, the cooling pipeline further includes a temperature control unit; the temperature control unit is used to control the temperature of the refrigerant in the cooling pipeline.

[0021] An embodiment of the present invention provides a motor cooling system, which includes a motor stator and a cooling pipe. The stator cooling pipe in the cooling pipe is arranged in close contact with the motor stator to absorb the heat generated by the motor stator in time, thereby achieving a cooling effect on the motor stator; wherein the motor stator includes a first stator, a second stator and a third stator; and the first stator and the third stator are located on both sides of the second stator; further, the first stator includes n first strip protrusions, the second stator includes 2n second strip protrusions, and the third stator includes n third strip protrusions; and the second strip protrusion includes a first sub-strip protrusion and a second sub-strip protrusion, that is, the first strip protrusion is located on one side of the first sub-strip protrusion, and the third strip protrusion is located on the third side of the second sub-strip protrusion. On one side of the second sub-strip protrusion, it is reflected that the strip protrusions of the entire motor stator are set in an "offset" manner; further, the stator cooling duct includes a first section, a second section and a third section, wherein the first section is located between the first sub-strip protrusion and the second sub-strip protrusion; the second section is located on the side of the second sub-strip protrusion away from the third stator; the third section is located on the side of the first sub-strip protrusion away from the first stator; it is reflected that the setting of the stator cooling duct is designed according to the setting positions of the first strip protrusion, the second strip protrusion and the third strip protrusion in the motor stator, thereby ensuring that the stator cooling duct fits better to the motor stator and timely absorbs the heat generated by the motor stator, thereby ensuring the heat dissipation effect of the motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a result schematic diagram of a motor cooling system provided by an embodiment of the present invention;

[0024] Figure 2 is an exploded diagram of a motor stator provided by an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a stator cooling pipeline provided by an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of a combination of a motor stator and a stator cooling pipe provided by an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of another combination of a motor stator and a stator cooling pipe provided by an embodiment of the present invention;

[0028] Figure 6 It is a result schematic diagram of a motor cooling system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below in combination with the drawings in the embodiments of the present invention through specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work fall within the protection scope of the present invention.

[0030] Figure 1 is a result schematic diagram of a motor cooling system provided by an embodiment of the present invention, Figure 2 is an exploded diagram of a motor stator provided by an embodiment of the present invention, Figure 3 is a structural schematic diagram of a stator cooling pipeline provided by an embodiment of the present invention, Figure 4 is a schematic diagram of a combination of a motor stator and a stator cooling pipe provided by an embodiment of the present invention, Figure 5 is another schematic diagram of a combination of a motor stator and a stator cooling pipe provided by an embodiment of the present invention, with reference to Figures 1 to 5As shown, an embodiment of the present invention provides a motor cooling system 10, which includes a motor stator 100 and a cooling pipe 200, wherein the cooling pipe 200 includes a stator cooling pipe 210 and a heat exchanger 220, and a refrigerant 300 is transmitted in the cooling pipe 200; the motor stator 100 includes a first stator 110, a second stator 120 and a third stator 130; along a first direction X1, the first stator 110 and the third stator 130 are located on both sides of the second stator 120; the first stator 110 includes a first base 110a and n first strip-shaped protrusions 110b located on the first base 110a, the second stator 120 includes a second base 120a and 2n second strip-shaped protrusions 120b located on the second base 120a, and the third stator 130 includes a third base 130a and n third strip-shaped protrusions located on the third base 130a. shaped protrusion 130b; the first strip protrusion 110b, the second strip protrusion 120b and the third strip protrusion all extend along the first direction X1, and the first strip protrusion 110b, the second strip protrusion 120b and the third strip protrusion 130b have the same width along the second direction X2; wherein the second strip protrusion 120b includes a first sub-strip protrusion 120b1 and a second sub-strip protrusion 120b2, and along the second direction X2, the first sub-strip protrusion 120b1 is located between the two second sub-strip protrusions 120b2, and the second sub-strip protrusion 120b2 is located between the two first sub-strip protrusions 120b1; the first strip protrusion 110b is located on a side of the first sub-strip protrusion 120b1 away from the third stator 130, and the third strip protrusion 130b is located on a side of the second sub-strip protrusion 120b2 away from the first stator 110; n is a positive integer;

[0031] The stator cooling pipe 210 is attached to the motor stator 100 and the refrigerant in the stator cooling pipe 210 is used to absorb the heat generated by the motor stator 100; the stator cooling pipe 210 includes a first section 211, a second section 212 and a third section 213; along the second direction X2, the first section 211 is located between the first sub-strip protrusion 120b1 and the second sub-strip protrusion 120b2; the second section 212 is located on the side of the second sub-strip protrusion 120b2 away from the third stator 130, and is connected to the two adjacent first sections 211; the third section 213 is located on the side of the first sub-strip protrusion 120b1 away from the first stator 110, and is connected to the two adjacent first sections 211; the heat exchanger 220 is connected to the stator cooling pipe 210, and the refrigerant 300 dissipates heat to the air through the heat exchanger 220; the first direction X1 and the second direction X2 are perpendicular.

[0032] refer to Figure 1As shown, the motor cooling system 10 includes a motor stator 100 and a cooling pipe 200, and a refrigerant 300 is transmitted in the cooling pipe 200 to dissipate heat for the motor stator 100. The refrigerant is a substance that easily absorbs heat to become a gas and easily releases heat to become a liquid. The refrigerant absorbs heat or dissipates heat by converting the gaseous state and the liquid state of the refrigerant. The motor stator 100 is an important component of a motor such as a generator or a starter. By dissipating the heat generated by the motor stator 100 in a timely manner, the normal working efficiency of the motor such as the generator or the starter can be guaranteed, and the service life of the motor such as the generator or the starter can be guaranteed. The motor cooling system 10 provided in the embodiment of the present invention ensures that the heat generated by the cooling pipe 200 to the motor stator 100 can be dissipated in a timely manner by the design of the cooling pipe 200, thereby improving the overall working efficiency of the motor cooling system 10.

[0033] Specifically, the cooling pipeline 200 includes a stator cooling pipeline 210 and a heat exchanger 220. Figure 1 As shown, the stator cooling duct 210 is arranged around the motor stator 100, and the stator cooling duct 210 includes a medium inlet and a medium outlet (refer to Figure 1 The refrigerant is transferred to the stator cooling pipe 210 through the inlet and outlet to dissipate heat from the motor stator 100. The heat exchanger 220 can be understood as a condenser, and the heat of the motor stator 100 absorbed by the refrigerant is dissipated to the air through the heat exchanger 220. Optionally, by covering the stator cooling pipe 210 for transmitting the refrigerant on the motor stator 100, the heat generated by the motor stator 100 is absorbed by the refrigerant, and the refrigerant after absorbing the heat of the motor stator 100 is converted from liquid to gas; the cooling pipe 200 transfers the refrigerant in the stator cooling pipe 210 to the heat exchanger 220, and the heat exchanger 220 converts the gaseous refrigerant into a liquid refrigerant, and dissipates the heat to the external environment, such as the air, accompanied by heat dissipation.

[0034] Specifically, refer to Figure 2As shown, the motor stator 100 includes a first stator 110, a second stator 120 and a third stator 130, and along the first direction X1, the first stator 110 and the third stator 130 are located on both sides of the second stator 120. It can be understood that the second stator 120 is arranged between the first stator 110 and the third stator 130, and the first stator 110, the second stator 120 and the third stator 130 form a motor stator 100. Furthermore, the first stator 110 includes a first base 110a and a plurality of first strip-shaped protrusions 110b located on the first base 110a, the second stator 120 includes a second base 120a and a plurality of second strip-shaped protrusions 120b located on the second base 120a, and the third stator 130 includes a third base 130a and a plurality of third strip-shaped protrusions 130b located on the third base 130a, wherein the first strip-shaped protrusion 110b can be understood as a protrusion structure on the first stator 110, the second strip-shaped protrusion 120b can be understood as a protrusion structure on the second stator 120, and the third strip-shaped protrusion 130b can be understood as a protrusion structure on the third stator 130, and the protrusion structure can dissipate heat for the motor stator 100, and the stator cooling pipe 210 can enhance the heat dissipation effect on the motor stator 100 by tightly surrounding the protrusion structure.

[0035] For further reference, Figure 2 and Figure 5 As shown, the first strip protrusion 110b, the second strip protrusion 120b and the third strip protrusion 130b all extend along the first direction X1, that is, the extending direction of the protrusion structure is the same as the arrangement direction of the first stator 110, the second stator 120 and the third stator 130. Combined with the arrangement positions of the first stator 110, the second stator 120 and the third stator 130, it can be understood that the first strip protrusion 110b and the third strip protrusion 130b are located on both sides of the second strip protrusion 120b.

[0036] Further, the second stator 120 includes 2n second strip protrusions 120b, and the second strip protrusion 120b includes a first sub-strip protrusion 120b1 and a second sub-strip protrusion 120b2. Along the second direction X2, the first sub-strip protrusion 120b1 is located between two second sub-strip protrusions 120b2, and the second sub-strip protrusion 120b2 is located between two first sub-strip protrusions 120b1. Figure 2 and Figure 5As shown, there is a second sub-strip protrusion 120b2 between two adjacent first sub-strip protrusions 120b1, and there is a first sub-strip protrusion 120b1 between two adjacent second sub-strip protrusions 120b2, that is, the first sub-strip protrusions 120b1 and the second sub-strip protrusions 120b2 are alternately arranged along the second direction X2, so the 2n second strip protrusions 120b include n first sub-strip protrusions 120b1 and n second sub-strip protrusions 120b2. At the same time, the first stator 110 includes n first strip protrusions 110b, and the third stator 130 includes n third strip protrusions 130b. The first strip protrusion 110b is located on the side of the first sub-strip protrusion 120b1 away from the third stator 130, and the third strip protrusion 130b is located on the side of the second sub-strip protrusion 120b2 away from the first stator 110. In other words, with reference to Figure 2 and Figure 5 As shown, although the first strip protrusion 110b and the third strip protrusion 130b are located on both sides of the second strip protrusion 120b, they are in contact with different second strip protrusions 120b (the first sub-strip protrusion 120b1 and the second sub-strip protrusion 120b2), that is, the projections of the first strip protrusion 110b and the third strip protrusion 130b along the first direction X1 do not overlap. In other words, the first strip protrusion 110b and the third strip protrusion 130b are staggered. Further, the first strip protrusion 110b, the second strip protrusion 120b and the third strip protrusion 130b have the same width along the second direction X2, refer to Figure 2 The width of the first strip protrusion 110b along the second direction X2 is w1, the width of the second strip protrusion 120b along the second direction X2 is w2, the width of the third strip protrusion 130b along the second direction X2 is w3, and |w1-w2| / w2≤20%, |w2-w3| / w3≤20%, that is, the values ​​of w1, w2 and w3 are the same or similar. In this way, the protrusion structures that fit each other in the first stator 110, the second stator 120 and the third stator 130 can be ensured to have a more regular shape, which is convenient for the arrangement of the stator cooling pipe 210.

[0037] The stator cooling pipe 210 is attached to the motor stator 100 and the refrigerant in the stator cooling pipe 210 is used to absorb the heat generated by the motor stator 100. Therefore, the stator cooling pipe 210 should be arranged in accordance with the shape of the motor stator 100 to ensure the overall heat dissipation effect. Figures 3 to 5 As shown, the stator cooling pipe 210 includes a first subsection 211, a second subsection 212 and a third subsection 213. The first subsection 211, the second subsection 212 and the third subsection 213 are internally connected pipe structures to ensure the transmission of the refrigerant in the stator cooling pipe 210. For details, refer to Figures 3 to 5As shown, along the second direction X2, the first sub-portion 211 is located between the first sub-strip protrusion 120b1 and the second sub-strip protrusion 120b2, that is, the first sub-portion 211 is located in the groove area formed by two adjacent second strip protrusions 120b and the second base 120a. Figures 3 to 5 As shown, the second sub-section 212 is located on the side of the second sub-strip protrusion 120b2 away from the third stator 130, that is, the second sub-section 212 is located in the groove area formed by two adjacent first strip protrusions 110a and the first base 110a; at the same time, the second sub-section 212 is connected to the two adjacent first sub-sections 211, so the second sub-section 212 and the two adjacent first sub-sections 211 are connected to form a "J"-shaped channel. Similarly, refer to Figures 3 to 5 As shown, the third subsection 213 is located on the side of the first sub-strip protrusion 120b1 away from the first stator 110, that is, the third subsection 213 is located in the groove area formed by two adjacent third strip protrusions 130a and the third base 130a; at the same time, the third subsection 213 is connected to the two adjacent first subsections 211, and the third subsection 213 and the two adjacent first subsections 211 are connected to form a "J"-shaped channel. The entire stator cooling pipe 210 can be understood as a return "J"-shaped refrigerant transmission channel, and the stator cooling pipe 210 and the protrusion structure of the motor stator 100 can be tightly fitted, thereby ensuring the heat dissipation effect on the motor stator 100.

[0038] Optionally, the material of the stator cooling pipe 210 includes silicon steel sheets. By stacking silicon steel sheets of different shapes, a folded "J"-shaped refrigerant transmission channel including a first section 211, a second section 212 and a third section 213 can be formed. Exemplarily, silicon steel sheets whose shapes fit the raised structures of the motor stator 100 are stacked, and the stator cooling pipe 210 is prepared by a liquid expansion molding process, which can ensure that the stator cooling pipe 210 is tightly fitted to the motor stator 100, and can better absorb the heat of the motor stator 100, thereby ensuring the heat dissipation effect of the motor stator 100.

[0039] In summary, an embodiment of the present invention provides a motor cooling system, which includes a motor stator and a cooling pipe. The stator cooling pipe in the cooling pipe is arranged in a close fit with the motor stator to absorb the heat generated by the motor stator in a timely manner, thereby achieving a cooling effect on the motor stator; wherein the setting of the stator cooling pipe is designed according to the setting positions of the first strip protrusion, the second strip protrusion and the third strip protrusion in the motor stator, thereby ensuring that the stator cooling pipe is better fitted to the motor stator and the heat generated by the motor stator is absorbed in a timely manner, thereby ensuring the heat dissipation effect of the motor stator.

[0040] Optionally, the minimum distance between the stator cooling pipe 210 and the motor stator 100 is d, satisfying: 0≤d≤2mm.

[0041] Specifically, refer to Figure 2 is a schematic diagram of the split structure of the motor stator 100, Figure 3 is a schematic structural diagram of the stator cooling pipe 210, Figure 4 Schematic diagram of the structure in which the stator cooling pipe 210 is attached to the motor stator 100. Figure 5 Schematic diagram of the structure in which the stator cooling pipe 210 is attached to a part of the motor stator 100. Figures 2 to 5 As shown, the stator cooling pipe 210 is provided with a first section 211, a second section 212 and a third section 213 according to the shape of the motor stator 100, and ensures that the minimum distance d between the stator cooling pipe 210 and the motor stator 100 satisfies: 0≤d≤2mm. It can be understood that the stator cooling pipe 210 and the motor stator 100 are tightly fitted, and the gap therebetween is less than or equal to 2mm. Furthermore, the minimum distance between the stator cooling pipe 210 and the motor stator 100 is almost zero, which means that the stator cooling pipe 210 and the motor stator 100 are closely fitted, thereby ensuring that the refrigerant in the stator cooling pipe 210 can effectively dissipate the heat of the motor stator 100, thereby reflecting the heat dissipation and cooling effect of the motor cooling system 10.

[0042] Optionally, refer to Figure 2 As shown, along the first direction X1, the length of the first stator 110 is the same as the length of the first strip protrusion 110b, the length of the second stator 120 is the same as the length of the second strip protrusion 120b, and the length of the third stator 130 is the same as the length of the third strip protrusion 130b.

[0043] Furthermore, along the first direction X1, the length of the first stator 110 is the same as the length of the first strip-shaped protrusion 110b, which can be understood as the protrusion structure on the first stator 110 is the same as its own length; similarly, along the first direction X1, the length of the second stator 120 is the same as the length of the second strip-shaped protrusion 120b, which can be understood as the protrusion structure on the second stator 120 is the same as its own length; similarly, along the first direction X1, the length of the third stator 130 is the same as the length of the third strip-shaped protrusion 130b, which can be understood as the protrusion structure on the third stator 130 is the same as its own length. The raised structures on the first stator 110, the second stator 120 and the third stator 130 are all the same length as themselves. Therefore, when the first stator 110, the second stator 120 and the third stator 130 are fitted together, the raised structures can also be aligned and fitted together, that is, the overall structure of the motor stator 100 is more regular, thereby providing a more regular space for the setting of the stator cooling pipe 210, facilitating the preparation of the stator cooling pipe 210 in combination with the shape of the motor stator 100, thereby ensuring the cooling and heat dissipation effect of the motor cooling system 10.

[0044] Combination Figure 2 and Figure 5 As shown, along the first direction X1, the distance between the side of the second section 212 away from the second stator 120 and the second stator 120 is L1, and the length of the first stator is L2, satisfying: |L1-L2| / L2≤20%; along the first direction X1, the length of the first section 211 is L3, and the length of the second stator is L4, satisfying: |L3-L4| / L4≤20%; along the first direction X1, the distance between the side of the third section 213 away from the second stator 120 and the second stator 120 is L4, and the length of the third stator 130 is L6, satisfying: |L5-L6| / L6≤20%.

[0045] For further reference, Figure 2 , Figure 4 and Figure 5 As shown, for the motor stator 100, along the first direction, the length of the first stator 110 is L2, the length of the second stator 120 is L4, and the length of the third stator 130 is L6; Figures 3 to 5As shown, for the stator cooling pipe 210, along the first direction, the distance between the second subsection 212 and the second stator 120 is L1, the length of the first subsection 211 is L3, and the distance between the third subsection 213 and the second stator 120 is L4. Among them, |L1-L2| / L2≤20%, that is, the length of the first stator 110 is the same as or similar to the length of the second subsection 212; |L3-L4| / L4≤20%, that is, the length of the second stator 120 is the same as or similar to the length of the first subsection 211; |L5-L6| / L6≤20%, that is, the length of the third stator 130 is the same as or similar to the length of the third subsection 213. On the one hand, the overall length of the stator cooling pipe 210 does not significantly exceed the length of the motor stator 100, thereby ensuring the regularity of the overall structure; on the other hand, the overall length of the stator cooling pipe 210 does not significantly shorten the length of the motor stator 100, thereby ensuring the heat dissipation effect of the motor stator 100. In general, the compatibility of the stator cooling pipe 210 and the motor stator 100 is reflected, thereby ensuring the cooling effect of the motor cooling system 10.

[0046] Optionally, the distance from the first strip protrusion 110b to the first base 110a is s1, the distance from the second strip protrusion 120b to the second base 120a is s2, and the distance from the third strip protrusion 130b to the third base 130a is s3; the distance from the second division 212 to the first base 110a is s4, the distance from the first division 211 to the second base 120a is s5, and the distance from the third division 213 to the third base 130a is s6; satisfying, 0<(s4-s1) / s1≤20%, 0<(s5-s2) / s2≤20%, 0<(s6-s3) / s3≤20%.

[0047] Among them, for the motor stator 100, the distance from the first strip protrusion 110b to the first base 110a is s1, which can be understood as the first base 110a is the bottom and the thickness of the first strip protrusion 110b is s1; the distance from the second strip protrusion 120b to the second base 120a is s2, which can be understood as the second base 120a is the bottom and the thickness of the second strip protrusion 120b is s2; the distance from the third strip protrusion 130b to the third base 130a is s3, which can be understood as the third base 130a is the bottom and the thickness of the third strip protrusion 130b is s3. Similarly, for the stator cooling pipe 210, the distance from the second division 212 to the first machine base 110a is s4, which can be understood as the first machine base 110a being the bottom and the thickness of the second division 212 being s4; the distance from the first division 211 to the second machine base 120a is s5, which can be understood as the second machine base 120a being the bottom and the thickness of the first division 211 being s5; the distance from the third division 213 to the third machine base 130a is s6, which can be understood as the third machine base 130a being the bottom and the thickness of the third division 213 being s6.

[0048] Among them, 0<(s4-s1) / s1≤20%, it can be understood that the thickness of the second section 212 can be equal to the thickness of the first strip protrusion 110b, or the thickness of the second section 212 is slightly greater than the thickness of the first strip protrusion 110b; 0<(s5-s2) / s2≤20%, it can be understood that the thickness of the first section 211 can be equal to the thickness of the second strip protrusion 120b, or the thickness of the first section 211 is slightly greater than the thickness of the second strip protrusion 120b; 0<(s6-s3) / s3≤20%, it can be understood that the thickness of the third section 213 can be equal to the thickness of the third strip protrusion 130b, or the thickness of the third section 213 is slightly greater than the thickness of the third strip protrusion 130b. While ensuring the overall heat dissipation effect, the regularity of the overall structure is further improved, the process preparation is convenient, and the difficulty of process preparation is reduced.

[0049] Figure 6 is a result schematic diagram of a motor cooling system provided by an embodiment of the present invention, with reference to Figure 6 As shown, the cooling pipeline 200 further includes a circulation pump 230 , which is located at a side of the heat exchanger 220 away from the stator cooling pipeline 210 .

[0050] For further reference, Figure 6 As shown, the cooling pipeline 200 further includes a circulation pump 230, and the circulation pump 230 provides power for the transmission of the refrigerant 300 in the cooling pipeline 200. Figure 6As shown, the circulating pump 230 is located on the side of the heat exchanger 220 away from the stator cooling pipe 210. It can be understood that the transmission path of the refrigerant 300 is to absorb the heat of the motor stator 100 through the stator cooling pipe 210, release the heat to the outside of the environment through the heat exchanger 220, and then transmit the refrigerant 300 to the stator cooling pipe 210 through the circulating pump 230.

[0051] Optional, reference Figure 6 As shown, the cooling pipeline 200 further includes a flow control unit 240 ; the flow control unit 240 is used to control the flow of the refrigerant 300 in the cooling pipeline 200 .

[0052] Furthermore, the cooling pipe 200 also includes a flow control unit 240, which can control the flow of the refrigerant 300 in the cooling pipe 200. For example, the motor stator 100 generates different amounts of heat at different powers or different working hours, and thus the amount of heat that needs to be dissipated is different. The flow control unit 240 can be used to control the flow of the refrigerant 300 in the cooling pipe 200 to ensure that the cooling of the motor cooling system 10 is more efficient and save energy.

[0053] Optionally, the flow control unit includes a solenoid valve.

[0054] The flow control unit includes a solenoid valve, and the flow rate can be adjusted by controlling the opening of the solenoid valve. Furthermore, the flow rate can be adjusted by adjusting the opening of the solenoid valve.

[0055] Optionally, the cooling pipe 200 further includes a temperature control unit 250 ; the temperature control unit 250 is used to control the temperature of the refrigerant 300 in the cooling pipe 200 .

[0056] Furthermore, the cooling pipe 200 further includes a temperature control unit 250, which can adjust the temperature of the refrigerant 300 in the cooling pipe 200. Exemplarily, the temperature control unit 250 can be a heating device and / or a refrigeration device, etc. By stabilizing the control unit 250 to ensure that the refrigerant 300 is in a suitable stable state flowing in the cooling pipe 200, the cooling effect of the motor cooling system 10 can be improved.

[0057] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A motor cooling system, characterized in that: It includes a motor stator and a cooling pipeline, wherein the cooling pipeline includes a stator cooling pipeline and a heat exchanger, and a refrigerant is transmitted in the cooling pipeline; The motor stator comprises a first stator, a second stator and a third stator; along the first direction, the first stator and the third stator are located on both sides of the second stator; the first stator comprises a first base and n first strip-shaped protrusions located on the first base, the second stator comprises a second base and 2n second strip-shaped protrusions located on the second base, and the third stator comprises a third base and n third strip-shaped protrusions located on the third base; the first strip-shaped protrusion, the second strip-shaped protrusion and the third strip-shaped protrusion all extend along the first direction, The first strip protrusion, the second strip protrusion and the third strip protrusion have the same width along the second direction; wherein the second strip protrusion includes a first sub-strip protrusion and a second sub-strip protrusion, and along the second direction, the first sub-strip protrusion is located between two second sub-strip protrusions, and the second sub-strip protrusion is located between two first sub-strip protrusions; the first strip protrusion is located on a side of the first sub-strip protrusion away from the third stator, and the third strip protrusion is located on a side of the second sub-strip protrusion away from the first stator; n is a positive integer; The stator cooling pipe is attached to the motor stator and the refrigerant in the stator cooling pipe is used to absorb the heat generated by the motor stator; the stator cooling pipe includes a first sub-section, a second sub-section and a third sub-section; along the second direction, the first sub-section is located between the first sub-strip protrusion and the second sub-strip protrusion; the second sub-section is located on a side of the second sub-strip protrusion away from the third stator, and is connected to two adjacent first sub-sections; the third sub-section is located on a side of the first sub-strip protrusion away from the first stator, and is connected to two adjacent first sub-sections; The heat exchanger is connected to the stator cooling pipe, and the refrigerant dissipates heat into the air through the heat exchanger; the first direction is perpendicular to the second direction.

2. The motor cooling system according to claim 1, characterized in that: The minimum distance between the stator cooling pipe and the motor stator is d, satisfying: 0≤d≤2mm.

3. The motor cooling system according to claim 1, characterized in that: Along the first direction, the length of the first stator is the same as the length of the first strip-shaped protrusion, the length of the second stator is the same as the length of the second strip-shaped protrusion, and the length of the third stator is the same as the length of the third strip-shaped protrusion.

4. The motor cooling system according to claim 3, characterized in that: Along the first direction, a distance between the second subsection and the second stator at a side away from the second stator is L1, a length of the first stator is L2, and the following condition is satisfied: |L1-L2| / L2≤20%; Along the first direction, the length of the first section is L3, and the length of the second stator is L4, satisfying: |L3-L4| / L4≤20%; Along the first direction, a distance between the side of the third section away from the second stator and the second stator is L4, and a length of the third stator is L6, satisfying: |L5-L6| / L6≤20%.

5. The motor cooling system according to claim 1, characterized in that: The distance from the first strip-shaped protrusion to the first base is s1, the distance from the second strip-shaped protrusion to the second base is s2, and the distance from the third strip-shaped protrusion to the third base is s3; The distance from the second subsection to the first base is s4, the distance from the first subsection to the second base is s5, and the distance from the third subsection to the third base is s6; It satisfies that 0<(s4-s1) / s1≤20%, 0<(s5-s2) / s2≤20%, 0<(s6-s3) / s3≤20%.

6. The motor cooling system according to claim 1, characterized in that: The material of the stator cooling pipe includes silicon steel sheets.

7. The motor cooling system according to claim 1, characterized in that: The cooling pipeline further includes a circulation pump, and the circulation pump is located at a side of the heat exchanger away from the stator cooling pipeline.

8. The motor cooling system according to claim 1, characterized in that: The cooling pipeline also includes a flow control unit; the flow control unit is used to control the flow of the refrigerant in the cooling pipeline.

9. The motor cooling system according to claim 8, characterized in that: The flow control unit includes a solenoid valve.

10. The motor cooling system according to claim 1, characterized in that: The cooling pipeline also includes a temperature control unit; the temperature control unit is used to control the temperature of the refrigerant in the cooling pipeline.

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