CN218388469U - Power converter cooling structure - Google Patents

Abstract

The utility model belongs to the technical field of the power converter, a power converter cooling structure is disclosed, including drain pan and water-cooling apron. The water-cooling cover plate is covered at the bottom of the bottom shell and is connected with the bottom shell in a sealing way. The cooling flow channel is formed by matching the water-cooling cover plate and the bottom shell, a first bulge is convexly arranged on the bottom shell in the direction close to the water-cooling cover plate and extends along the first direction, the cooling flow channel comprises a first flow channel arranged on one side of the first bulge and a second flow channel arranged on the other side of the first bulge, one end of the first flow channel is communicated with one end of the second flow channel, a first cooling position corresponding to the first flow channel and the second flow channel is arranged at the bottom of the accommodating cavity, the first cooling position is used for cooling the air compressor control module, the first bulge and the water-cooling cover plate are arranged at intervals, a first groove communicated with the accommodating cavity is arranged in the first bulge, the first groove is used for accommodating the inductance of the air compressor control module, and the first flow channel is communicated with the second flow channel through a gap between the first bulge and the water-cooling cover plate.

Description

Power converter cooling structure

Technical Field

The utility model relates to a power converter technical field especially relates to a power converter cooling structure.

Background

A power converter is a device that can convert one dc voltage value to another dc voltage value. Because the heat productivity of the components inside the power converter is large, in order to ensure the normal operation of the power converter, a cooling structure needs to be arranged on the power converter to cool the components inside the power converter. The existing power converter cooling structure is generally characterized in that a cooling water channel is laid at the bottom of a power converter shell, components needing heat dissipation are attached to the bottom of the shell, and heat emitted by the components is taken away by cooling liquid circulating in the cooling water channel so as to achieve the purpose of cooling. However, in the power converter cooling structure, the heat dissipation water channel is paved at the bottom of the power converter shell, the components are paved on the shell provided with the cooling water channel, and only plane heat dissipation can be formed, so that the heat dissipation area is small, and due to the fact that some irregular electronic components are often arranged on the components of the power converter, the contact area between the components and the shell can be reduced, and the heat dissipation effect is poor.

Therefore, a power converter cooling structure is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power converter cooling structure increases heat radiating area, improves the cooling effect.

To achieve the purpose, the utility model adopts the following technical proposal:

a power inverter cooling structure comprising:

the bottom shell is internally provided with an accommodating cavity for accommodating components of the power converter;

the water-cooling apron, its lid is located drain pan bottom, and with drain pan sealing connection, the water-cooling apron with the drain pan cooperation forms the cooling runner that is used for circulating the coolant liquid, the drain pan is to being close to the protruding first arch that is equipped with of direction of water-cooling apron, first arch with the water-cooling apron interval sets up, first arch extends along the first direction, the cooling runner including set up in the first runner of first protruding one side with set up in the second runner of first protruding opposite side, the one end of first runner with the one end intercommunication of second runner, hold the chamber bottom be provided with first runner and the first cooling position that the second runner corresponds, first cooling position is used for cooling down air compressor control module, be provided with in the first arch with hold the first recess of chamber intercommunication, first recess is used for holding air compressor control module's inductance, first runner middle section warp first arch with clearance between the water-cooling apron with second runner intercommunication.

Preferably, the bottom case includes:

a main housing provided with a mounting hole;

the air compressor water cooling plate is arranged at the position of the mounting hole and is sealed, the first cooling position and the first bulges are arranged on the air compressor water cooling plate, a first fin extending into the first flow channel and a second fin extending into the second flow channel are arranged on the air compressor water cooling plate, and the first fin and the second fin are both provided with a plurality of fins and extend along a first direction.

Preferably, a fourth protrusion and a fifth protrusion are arranged on the water-cooling cover plate, the fourth protrusion extends into the first flow channel, and the fifth protrusion extends into the second flow channel.

Preferably, the bottom of the main casing body is provided with a second protrusion and a third protrusion protruding into the accommodating cavity, the second protrusion and the third protrusion are arranged at intervals along a first direction and extend along a second direction, the second direction is perpendicular to the first direction, the cooling channel further comprises a third channel arranged in the second protrusion and a fourth channel arranged in the third protrusion, one end of the third channel is communicated with one end of the fourth channel, the top end of the second protrusion and the top end of the third protrusion are provided with a plurality of second cooling positions, and the second cooling positions are used for cooling the MOSFET and the DIODE.

Preferably, the main housing is provided with a plurality of third fins extending into the third flow channel and a plurality of fourth fins extending into the fourth flow channel, and the third fins and the fourth fins extend along the second direction.

Preferably, a sixth bulge corresponding to the second bulge and a seventh bulge corresponding to the third bulge are arranged on the water-cooling cover plate, the sixth bulge extends into the third flow channel, and the seventh bulge extends into the fourth flow channel.

Preferably, the cooling flow channel further includes a fifth flow channel and a sixth flow channel disposed between the second protrusion and the third protrusion, the fifth flow channel and the sixth flow channel both extend along the second direction, one end of the fifth flow channel is communicated with one end of the sixth flow channel, a plurality of third cooling positions corresponding to the fifth flow channel or the sixth flow channel are disposed at the bottom of the accommodating cavity, and the third cooling positions are used for cooling the power inductor.

Preferably, the cooling flow channel further includes a seventh flow channel and an eighth flow channel, a fourth cooling position corresponding to the seventh flow channel and the eighth flow channel is disposed in the accommodating cavity, and the fourth cooling position is used for cooling the hydrogen pump control module.

Preferably, the main housing is provided with a connecting water channel, a water inlet and a water outlet, one end of the first flow channel is communicated with the water inlet, the other end of the first flow channel is communicated with one end of the second flow channel through the connecting water channel, the other end of the second flow channel is communicated with one end of the third flow channel, the other end of the third flow channel is communicated with one end of the fourth flow channel, the other end of the fourth flow channel is communicated with one end of the seventh flow channel, the other end of the seventh flow channel is communicated with one end of the fifth flow channel, the other end of the fifth flow channel is communicated with one end of the sixth flow channel, the other end of the sixth flow channel is communicated with one end of the eighth flow channel, and the other end of the eighth flow channel is communicated with the water outlet.

Preferably, the main housing is provided with a first bypass column extending into the seventh flow channel and a second bypass column extending into the eighth flow channel, and the first bypass column and the second bypass column are provided with a plurality of columns.

The utility model has the advantages that:

the utility model discloses a power converter cooling structure, first flow channel and second flow channel are used for dispelling the heat and cooling to the air compressor control module that sets up on second cooling position, through setting up first arch to set up first recess in first arch, air compressor control module's inductance holds in first recess, makes air compressor control module can more add closely to laminate on first cooling position, improves the cooling effect to air compressor control module. The cooling liquid circulates in the gap between the first protrusion and the water-cooling cover plate, so that the heat dissipation area is increased, three-side three-dimensional heat dissipation of the bottom and two sides of the air compressor control module inductor is realized, and the cooling effect of the air compressor control module inductor with higher heat productivity is improved.

Drawings

Fig. 1 is an exploded view of a power converter cooling structure provided by an embodiment of the present invention;

fig. 2 is a partial cross-sectional view of an air compressor water-cooling plate of a cooling structure of a power converter provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a main housing of a power converter cooling arrangement provided by an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of an air compressor water-cooling plate of a power converter cooling structure provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second air compressor water-cooling plate of the power converter cooling structure provided in the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a water-cooling cover plate of a cooling structure of a power converter according to an embodiment of the present invention;

fig. 7 is a schematic partial structural diagram of a main housing of a power converter cooling structure according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a partial structure of a main housing of a cooling structure of a power converter according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a third partial structure of a main housing of a cooling structure of a power converter according to an embodiment of the present invention;

fig. 10 is a partial cross-sectional view of a second protrusion and a third protrusion of a power converter cooling structure provided by an embodiment of the present invention.

In the figure:

1. a bottom case; 11. a first protrusion; 111. a first groove; 12. a main housing; 121. a second protrusion; 122. a third protrusion; 123. a third fin; 124. a fourth fin; 125. a fifth fin; 126. a sixth fin; 127. a first bypass column; 128. a second bypass column; 129. a seventh fin;

13. an air compressor water cooling plate; 131. a first fin; 132. a second fin;

14. a first arc-shaped flow guide rib; 15. a second arc-shaped flow guide rib;

2. water-cooling the cover plate; 21. a fourth protrusion; 22. a fifth projection; 23. a sixth projection; 24. a seventh projection;

10. an accommodating chamber;

101. a first cooling station; 102. mounting holes; 103. a second cooling station; 104. a third cooling position; 105. a fourth cooling position;

110. a first flow passage; 120. a second flow passage; 130. a third flow path; 140. a fourth flow path; 150. a fifth flow channel; 160. a sixth flow path; 170. a seventh flow channel; 180. an eighth flow channel; 190. a connecting water channel; 200. a water inlet; 210. a water outlet; 220. a gap.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a power converter cooling structure, for example, the cooling structure is used for heat dissipation of an all-in-one power converter, and main heat sources of the all-in-one power converter include a MOSFET metal-oxide semiconductor field effect transistor, a DIODE metal semiconductor DIODE, a power inductor, a hydrogen pump control module and an air compressor control module, wherein the power inductor is an inductor which is used in electrical engineering and can bear high power, the hydrogen pump control module is a module for controlling the rotating speed of a hydrogen circulating pump, and the air compressor control module can change a direct-current voltage value into an alternating-current voltage value and supply power to an air compressor.

As shown in fig. 1 and 2, the power converter cooling structure includes a bottom case 1 and a water-cooled cover plate 2. The bottom shell 1 is provided with an accommodating cavity 10 for accommodating power converter components. The water-cooling cover plate 2 is covered at the bottom of the bottom shell 1 and is connected with the bottom shell 1 in a sealing way. Specifically, in the present embodiment, the water-cooled cover plate 2 and the main casing 12 are connected by friction stir welding to ensure the sealing effect between the water-cooled cover plate 2 and the main casing 12. The water-cooling cover plate 2 and the bottom shell 1 are matched to form a cooling flow channel, a first bulge 11 is convexly arranged on the bottom shell 1 in the direction close to the water-cooling cover plate 2, the first bulge 11 extends in the first direction, the cooling flow channel comprises a first flow channel 110 arranged on one side of the first bulge 11 and a second flow channel 120 arranged on the other side of the first bulge 11, one end of the first flow channel 110 is communicated with one end of the second flow channel 120, a first cooling position 101 corresponding to the first flow channel 110 and the second flow channel 120 is arranged at the bottom of the accommodating cavity 10, the first cooling position 101 is used for cooling the air compressor control module, the first bulge 11 is arranged at an interval with the water-cooling cover plate 2, a first groove 111 communicated with the accommodating cavity 10 is arranged in the first bulge 11, the first groove 111 is used for accommodating inductance of the air compressor control module, and the first flow channel 110 is communicated with the second flow channel 120 through a gap 220 between the first bulge 11 and the water-cooling cover plate 2.

In the power converter cooling structure provided by this embodiment, the first flow channel 110 and the second flow channel 120 are used for cooling the air compressor control module disposed on the second cooling position 103, and by disposing the first protrusion 11 and disposing the first groove 111 in the first protrusion 11, the inductance of the air compressor control module is accommodated in the first groove 111, so that the air compressor control module can be more tightly attached to the first cooling position 101, and the cooling effect on the air compressor control module is improved. The cooling liquid circulates in the gap 220 between the first protrusion 11 and the water-cooling cover plate 2, so that the heat dissipation area is increased, three-side three-dimensional heat dissipation of the bottom and two sides of the air compressor control module inductor is realized, and the cooling effect of the air compressor control module inductor with higher heat productivity is improved.

Alternatively, as shown in fig. 1 and 3, the bottom case 1 includes a main case 12 and an air compressor water cooling plate 13. Be provided with mounting hole 102 on main casing 12, air compressor machine water-cooling board 13 sets up in mounting hole 102 department, and sealed mounting hole 102, and first cooling position 101 and first arch 11 all set up on air compressor machine water-cooling board 13. The areas of the air compressor water cooling plates 13 on the two sides of the first protrusion 11 are used for cooling other parts of the air compressor control module except for the inductor.

Alternatively, as shown in fig. 2 to 5, the air compressor water cooling plate 13 is provided with a first fin 131 extending into the first flow channel 110 and a second fin 132 extending into the second flow channel 120, and the first fin 131 and the second fin 132 are provided in plurality and extend in the first direction. The arrangement of the first fins 131 and the second fins 132 increases the contact area between the air compressor water cooling plate 13 and the cooling liquid, so that the cooling effect of the air compressor water cooling plate 13 on the control module of the air compressor is improved. And the split design of the main housing 12 and the air compressor water cooling plate 13 facilitates the processing of the first protrusion 11, the first groove 111, and the first fin 131 and the second fin 132. In this embodiment, the air compressor water-cooling plate 13 is fixed to the main casing 12 through screws, and a sealing ring surrounding the mounting hole 102 is clamped between the air compressor water-cooling plate 13 and the main casing 12, so as to ensure a waterproof sealing effect between the air compressor water-cooling plate 13 and the main casing 12.

Optionally, as shown in fig. 1 and fig. 6, a fourth protrusion 21 and a fifth protrusion 22 are disposed on the water-cooled cover plate 2, the fourth protrusion 21 extends into the first flow channel 110, and the fifth protrusion 22 extends into the second flow channel 120. In order to avoid that the cross sections of the first flow passage 110 and the second flow passage 120 are too large due to the existence of the mounting hole 102, so that the flow speed is reduced when the cooling liquid flows through the positions to influence the cooling effect, the fourth protrusion 21 and the fifth protrusion 22 are arranged on the water-cooling cover plate 2 to reduce the flow cross sections of the first flow passage 110 and the second flow passage 120, so that the flow speed of the cooling liquid at the positions is improved, and the cooling effect on the air compressor control module with high heat productivity is ensured.

Alternatively, as shown in fig. 7 to 9, a second protrusion 121 and a third protrusion 122 are convexly disposed at the bottom of the main housing 12 inward of the accommodating cavity 10, the second protrusion 121 and the third protrusion 122 are disposed at an interval along a first direction and both extend along a second direction, the second direction is perpendicular to the first direction, the cooling flow channel further includes a third flow channel 130 disposed in the second protrusion 121 and a fourth flow channel 140 disposed in the third protrusion 122, one end of the third flow channel 130 is communicated with one end of the fourth flow channel 140, a plurality of second cooling positions 103 are disposed at the top end of the second protrusion 121 and the top end of the third protrusion 122, and the second cooling positions 103 are used for cooling the MOSFET and the DIODE. Specifically, in the present embodiment, 8 second cooling sites 103 are respectively provided on the top end of the second bump 121 and the top end of the third bump 122, and the MOSFET and DIODE are pressed against the second cooling sites 103 by the pressing sheet to dissipate heat. The contact area between the accommodating cavity 10 and the bottom case 1 is further increased by the arrangement of the second protrusion 121 and the third protrusion 122, so that the cooling liquid circulating in the second protrusion 121 and the third protrusion 122 can better cool the components in the accommodating cavity 10 through the bottom case 1.

Alternatively, as shown in fig. 7 to 9, a plurality of third fins 123 extending into the third flow passage 130 and a plurality of fourth fins 124 extending into the fourth flow passage 140 are provided on the main housing 12, and each of the third fins 123 and the fourth fins 124 extends in the second direction. The third fins 123 and the fourth fins 124 are arranged to increase the contact area between the bottom case 1 and the cooling liquid, and improve the cooling effect of the second cooling position 103 on the MOSFETs and the DIODEs.

Optionally, as shown in fig. 6 and 10, a sixth protrusion 23 corresponding to the second protrusion 121 and a seventh protrusion 24 corresponding to the third protrusion 122 are provided on the water-cooled cover plate 2, the sixth protrusion 23 extends into the third flow channel 130, and the seventh protrusion 24 extends into the fourth flow channel 140. In order to avoid that the cooling effect is affected by the too large cross-sectional areas of the third flow channel 130 and the fourth flow channel 140 caused by the existence of the second protrusion 121 and the third protrusion 122 on the main housing 12, and the too low flow rate of the cooling liquid flowing through the third flow channel 130 and the fourth flow channel 140, the flow cross-sectional areas of the third flow channel 130 and the fourth flow channel 140 are reduced by arranging the sixth protrusion 23 and the seventh protrusion 24 on the water-cooling cover plate 2, so that the flow rate of the cooling liquid at the positions is increased, and the cooling effect on the MOSFET and DIODE is ensured.

Optionally, as shown in fig. 7 to 9, the cooling flow channel further includes a fifth flow channel 150 and a sixth flow channel 160 disposed between the second protrusion 121 and the third protrusion 122, the fifth flow channel 150 and the sixth flow channel 160 both extend along the second direction, one end of the fifth flow channel 150 is communicated with one end of the sixth flow channel 160, a plurality of third cooling positions 104 corresponding to the fifth flow channel 150 or the sixth flow channel 160 are disposed at the bottom of the accommodating cavity 10, and the third cooling positions 104 are used for cooling the power inductor. In the present embodiment, the third cooling station 104 may accommodate sixteen power inductors. A fifth flow channel 150 and a sixth flow channel 160 are arranged below the third cooling position 104, a third flow channel 130 is arranged in the second protrusion 121 on one side, and a fourth flow channel 140 is arranged in the third protrusion 122 on the other side, that is, the power inductor on the third cooling position 104 also realizes bottom and two-side three-surface cooling. Specifically, in this embodiment, the third cooling position 104 is filled with a heat conducting glue, and a part of heat of the power inductor is conducted to the fifth flow channel 150 and the sixth flow channel 160 through the heat conducting glue, and another part of heat is conducted to the third flow channel 130 in the second protrusion 121 and the fourth flow channel 140 in the third protrusion 122, so as to further improve the cooling effect on the power inductor.

Alternatively, as shown in fig. 7 to 9, a fifth fin 125 and a sixth fin 126 extending into the fifth flow passage 150 and the sixth flow passage 160 are further disposed on the main housing 12, and the fifth fin 125 and the sixth fin 126 are disposed in plural and extend in the second direction. The fifth fin 125 and the sixth fin 126 are used to improve the cooling effect of the third cooling position 104 and the power inductor.

Optionally, the cooling flow channels further include a seventh flow channel 170 and an eighth flow channel 180, a fourth cooling position 105 corresponding to the seventh flow channel 170 and the eighth flow channel 180 is disposed in the accommodating cavity 10, and the fourth cooling position 105 is used for cooling the hydrogen pump control module.

Optionally, the main housing 12 is provided with a connecting water channel 190, a water inlet 200 and a water outlet 210, one end of the first flow channel 110 is communicated with the water inlet 200, the other end is communicated with one end of the second flow channel 120 through the connecting water channel 190, the other end of the second flow channel 120 is communicated with one end of the third flow channel 130, the other end of the third flow channel 130 is communicated with one end of the fourth flow channel 140, the other end of the fourth flow channel 140 is communicated with one end of the seventh flow channel 170, the other end of the seventh flow channel 170 is communicated with one end of the fifth flow channel 150, the other end of the fifth flow channel 150 is communicated with one end of the sixth flow channel 160, the other end of the sixth flow channel 160 is communicated with one end of the eighth flow channel 180, and the other end of the eighth flow channel 180 is communicated with the water outlet 210. The arrangement of the cooling flow channel enables the cooling liquid entering the cooling flow channel through the water inlet 200 to cool the MOSFETs and DIODEs with higher calorific value on the second cooling position 103, then cool the air compressor control module with the same higher calorific value, and finally cool the power inductor on the third cooling position 104 and the hydrogen pump control module on the fourth cooling position 105, which have lower calorific value.

Alternatively, as shown in fig. 7 to 9, the main housing 12 is provided with a first bypass flow column 127 extending into the seventh flow passage 170 and a second bypass flow column 128 extending into the eighth flow passage 180, and the first bypass flow column 127 and the second bypass flow column 128 are provided in plurality. The first and second bypass columns 127 and 128 are used to increase the heat dissipation area of the bottom case 1 at this location and at the same time to properly guide the water flow at this location.

Optionally, as shown in fig. 7 to 9, a first arc-shaped flow guiding rib 14 is arranged at a communication part of the third flow channel 130 and the fourth flow channel 140; the communication part of the fifth flow channel 150 and the sixth flow channel 160 is provided with a second arc-shaped flow guiding rib 15, and the first arc-shaped flow guiding rib 14 and the second arc-shaped flow guiding rib 15 are used for reducing the flow resistance of the cooling flow channel.

Optionally, as shown in fig. 7 to 9, a seventh fin 129 extending into the connecting water channel 190 is further disposed on the main housing 12, and the seventh fins 129 are multiple, and the seventh fins 129 are used for improving the cooling effect on the main housing 12 near the connecting water channel 190. The connection water channel 190 and the seventh fin 129 extend in the first direction to reduce resistance of the seventh fin 129 to water flow in the connection water channel 190.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A power converter cooling structure, comprising:

a bottom shell (1) which is internally provided with an accommodating cavity (10) for accommodating a power converter component;

a water-cooling cover plate (2) which is covered at the bottom of the bottom shell (1) and is connected with the bottom shell (1) in a sealing way, the water-cooling cover plate (2) is matched with the bottom shell (1) to form a cooling flow channel for circulating cooling liquid, a first bulge (11) is convexly arranged on the bottom shell (1) towards the direction close to the water-cooling cover plate (2), the first bulge (11) and the water-cooling cover plate (2) are arranged at intervals, the first protrusion (11) extends along a first direction, the cooling flow channel comprises a first flow channel (110) arranged on one side of the first protrusion (11) and a second flow channel (120) arranged on the other side of the first protrusion (11), one end of the first flow passage (110) communicates with one end of the second flow passage (120), a first cooling position (101) corresponding to the first flow passage (110) and the second flow passage (120) is arranged at the bottom of the accommodating cavity (10), the first cooling position (101) is used for cooling the air compressor control module, a first groove (111) communicated with the accommodating cavity (10) is arranged in the first bulge (11), the first groove (111) is used for accommodating the inductance of the air compressor control module, the middle section of the first flow channel (110) is communicated with the middle section of the second flow channel (120) through a gap (220) between the first bulge (11) and the water-cooling cover plate (2).

2. The power inverter cooling structure according to claim 1, wherein the bottom case (1) includes:

a main housing (12) provided with a mounting hole (102);

air compressor machine water-cooling board (13), its set up in mounting hole (102) department, and sealed mounting hole (102), first cooling position (101) reach first arch (11) all set up in on air compressor machine water-cooling board (13), be provided with on air compressor machine water-cooling board (13) and stretch into first fin (131) in first runner (110) and stretch into second fin (132) in second runner (120), first fin (131) with second fin (132) all are provided with a plurality ofly, and all extend along the first direction.

3. The power converter cooling structure according to claim 2, wherein a fourth protrusion (21) and a fifth protrusion (22) are provided on the water-cooled cover plate (2), the fourth protrusion (21) extends into the first flow passage (110), and the fifth protrusion (22) extends into the second flow passage (120).

4. The power converter cooling structure according to claim 2, wherein a second protrusion (121) and a third protrusion (122) are protruded from the bottom of the main housing (12) into the receiving cavity (10), the second protrusion (121) and the third protrusion (122) are spaced apart from each other in a first direction, and both extend in a second direction, the second direction is perpendicular to the first direction, the cooling flow channel further includes a third flow channel (130) disposed in the second protrusion (121) and a fourth flow channel (140) disposed in the third protrusion (122), one end of the third flow channel (130) is communicated with one end of the fourth flow channel (140), a plurality of second cooling locations (103) are disposed at the top end of the second protrusion (121) and the top end of the third protrusion (122), and the second cooling locations (103) are used for cooling the MOSFET and the DIODE.

5. The power converter cooling structure according to claim 4, wherein a third fin (123) extending into the third flow passage (130) and a fourth fin (124) extending into the fourth flow passage (140) are provided on the main housing (12), and the third fin (123) and the fourth fin (124) are provided in plurality and each extend in the second direction.

6. The power converter cooling structure according to claim 4, wherein a sixth protrusion (23) corresponding to the second protrusion (121) and a seventh protrusion (24) corresponding to the third protrusion (122) are provided on the water-cooled cover plate (2), the sixth protrusion (23) extends into the third flow passage (130), and the seventh protrusion (24) extends into the fourth flow passage (140).

7. The power inverter cooling structure according to claim 4, wherein the cooling channel further includes a fifth channel (150) and a sixth channel (160) disposed between the second protrusion (121) and the third protrusion (122), the fifth channel (150) and the sixth channel (160) both extend in the second direction, one end of the fifth channel (150) communicates with one end of the sixth channel (160), the bottom of the accommodating cavity (10) is provided with a plurality of third cooling sites (104) corresponding to the fifth channel (150) or the sixth channel (160), and the third cooling sites (104) are used for cooling the power inductor.

8. The power inverter cooling structure according to claim 7, wherein the cooling flow passage further comprises a seventh flow passage (170) and an eighth flow passage (180), a fourth cooling position (105) corresponding to the seventh flow passage (170) and the eighth flow passage (180) is provided in the accommodating chamber (10), and the fourth cooling position (105) is used for cooling a hydrogen pump control module.

9. The power converter cooling structure according to claim 8, wherein a connection water channel (190), a water inlet (200) and a water outlet (210) are provided on the main housing (12), one end of the first flow channel (110) communicates with the water inlet (200), the other end communicates with one end of the second flow channel (120) through the connection water channel (190), the other end of the second flow channel (120) communicates with one end of the third flow channel (130), the other end of the third flow channel (130) communicates with one end of the fourth flow channel (140), the other end of the fourth flow channel (140) communicates with one end of the seventh flow channel (170), the other end of the seventh flow channel (170) communicates with one end of the fifth flow channel (150), the other end of the fifth flow channel (150) communicates with one end of the sixth flow channel (160), the other end of the sixth flow channel (160) communicates with one end of the eighth flow channel (180), and the other end of the eighth flow channel (180) communicates with the water outlet (210).

10. The power inverter cooling structure according to claim 8, wherein a first bypass pillar (127) extending into the seventh flow passage (170) and a second bypass pillar (128) extending into the eighth flow passage (180) are provided on the main housing (12), and a plurality of the first bypass pillars (127) and the second bypass pillars (128) are provided.

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