CN112448542A - Electric assembly - Google Patents

Abstract

The invention discloses an electric assembly, comprising: automatically controlled module, motor and heat dissipation channel structure, heat dissipation channel structure includes: a first heat dissipation channel and a second heat dissipation channel, the first heat dissipation channel having a media inlet; the second heat dissipation channel is communicated with the first heat dissipation channel; the first heat dissipation channel is attached to or penetrates through the electric control module, and the second heat dissipation channel is partially arranged on the outer side of the motor in a surrounding mode. According to the electric assembly provided by the embodiment of the invention, the heat dissipation structure of the motor in the electric assembly is integrated with the heat dissipation structure of the electric control module, so that the integration of the electric assembly is facilitated, the integration level of the electric assembly is improved, the space utilization rate of the electric assembly is improved, and the cost is reduced.

Description

Electric assembly

Technical Field

The invention relates to the technical field of power equipment, in particular to an electric assembly.

Background

Along with the development of the current social technology, electric automobiles are more and more popular, the functions of controllers of the electric automobiles are more and more integrated, and the volume requirement is smaller and smaller. The vehicle controller in the related art has relatively single function and low integration level, the motor and the electric control module shell are independent shells, and water channels of all the box bodies are independent and need water pipes and the like to be connected with water channels, so that the occupied space is large, the weight is heavy, and the cost is high.

Disclosure of Invention

One object of the present invention is to provide an electric assembly in which the heat dissipation structure of the electric motor is integrated with the heat dissipation structure of the electronic control module.

An electric powertrain according to an embodiment of the present invention includes: automatically controlled module, motor and heat dissipation channel structure, heat dissipation channel structure includes: a first heat dissipation channel and a second heat dissipation channel, the first heat dissipation channel having a media inlet; the second heat dissipation channel is communicated with the first heat dissipation channel; the first heat dissipation channel is attached to or penetrates through the electric control module, and the second heat dissipation channel is partially arranged on the outer side of the motor in a surrounding mode.

According to the electric assembly provided by the embodiment of the invention, the heat dissipation structure of the motor in the electric assembly is integrated with the heat dissipation structure of the electric control module, so that the integration of the electric assembly is facilitated, the integration level of the electric assembly is improved, the space utilization rate of the electric assembly is improved, and the cost is reduced.

In addition, the electric assembly according to the above embodiment of the present invention may further have the following additional technical features:

in some embodiments, the first heat dissipation channel is disposed between the motor and the electronic control module, and one side of the first heat dissipation channel is attached to the electronic control module and the other side is attached to the motor.

In some embodiments, the power assembly further comprises a power module, the heat sink channel structure further comprises a third heat sink channel in communication with the second heat sink channel, the third heat sink channel having a media outlet; and the third heat dissipation channel is attached to or penetrates through the power supply module.

In some embodiments, the power module comprises a MOS transistor, a power DC inductor, a power step-down transformer, a power transformer; the MOS pipe is attached to the third heat dissipation channel, and the power supply DC inductor, the power supply step-down transformer and the power supply transformer are distributed on the peripheral side of the third heat dissipation channel.

In some embodiments, the second heat dissipation channel comprises: a passage body extending in a direction around the motor, and a partition plate; the partition plate is arranged in the channel main body and extends along the channel main body, one end of the channel main body is separated by the partition plate, one side of the partition plate is communicated with the first heat dissipation channel, and a gap is formed between the other end of the partition plate and the inner surface of the channel main body.

In some embodiments, a first water retaining rib is disposed on a surface of the partition plate, and the first water retaining rib forms a circuitous flow passage.

In some embodiments, a positioning sliding groove is formed in an inner surface of the second heat dissipation channel, the positioning sliding groove extends in a direction parallel to an axis of the motor, and an edge of the first water blocking rib is embedded into the positioning sliding groove.

In some embodiments, a motor three-phase line passing hole is formed in the top end of the motor, the motor three-phase line passing hole is arranged in a direction perpendicular to the axis of the motor, and the motor three-phase line penetrates through the motor three-phase line passing hole to connect the motor and the electronic control module.

In some embodiments, the electric powertrain further includes a transmission positioned below the electronic control module and the power module.

In some embodiments, the electric assembly includes the electronic control module, a power module, a motor, a transmission, and the heat dissipation channel structure, and all disposed in the same box.

In some embodiments, the first heat dissipation channel is provided with a second water blocking rib to form a circuitous flow channel.

Drawings

FIG. 1 is a schematic view of an electric powertrain in accordance with one embodiment of the present invention.

FIG. 2 is a schematic view of an electric powertrain according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view of a motorized assembly in accordance with one embodiment of the present invention.

FIG. 4 is a schematic view of a spacer plate of the motorized assembly in accordance with one embodiment of the present invention.

FIG. 5 is a schematic view of a housing of the motorized assembly of one embodiment of the present invention.

FIG. 6 is a schematic view of a housing of the motorized assembly of one embodiment of the present invention.

FIG. 7 is a cross-sectional view of a motorized assembly in accordance with one embodiment of the present invention.

FIG. 8 is an exploded view of the motorized assembly in accordance with one embodiment of the present invention.

Fig. 9 is a partially enlarged schematic view of the region indicated by circle a in fig. 8.

FIG. 10 is a schematic view of a PCB layout of the motorized assembly of one embodiment of the present invention.

FIG. 11 is a schematic view of a power module assembly of the motorized assembly in accordance with one embodiment of the present invention.

FIG. 12 is a schematic view of a PCB layout of a motorized assembly in accordance with one embodiment of the present invention.

FIG. 13 is a schematic layout of the electric powertrain according to one embodiment of the present invention.

Figure 14 is an exploded view of the motorized assembly in accordance with one embodiment of the present invention.

Reference numerals: an electric assembly 100, an upper small cover a1, an upper cover 2, an upper small cover b3, an alternating current charging connector 4, a water inlet pipe 5, a box shell 6, a transmission box cover 7, a direct current bus 8, a PTC connector 9, a compressor connector 10, a direct current charging wire 11, a DC adapter 12, a water outlet pipe 13, a signal connector 14, a motor cover 15, an IGBT drive 16, an IGBT17, a first cover plate 18, a first heat dissipation channel 19, a motor cabin 20, a motor shaft 21, a first opening 22, a motor cooling flow channel a23, a motor cooling flow channel b24, a motor cooling flow channel c25, a motor cooling flow channel d26, a partition plate 27, a second flow channel 28, a second opening 29, a support rib 30, a third heat dissipation channel 31, a second cover plate 32, a MOS tube drive a33, a MOS tube 34, a partition plate screw post a35, a first water blocking rib a36, a partition plate rib gap a37, a first water blocking rib b38, a partition plate rib 39, a first water blocking plate 3884 c notch 3884, partition screw column b42, power supply electronic control cavity 43, medium inlet 44, second water blocking rib a45, second water blocking rib b46, gearbox cavity 47, power supply DC inductor encapsulation cavity 48, power supply step-down transformer encapsulation cavity 49, power supply transformer encapsulation cavity 50, motor three-phase wire through hole 51, medium outlet 52, channel body 53, positioning chute 54, three-phase wire terminal 55, Hall 56, motor three-phase wire 57, motor 58, transmission 59, screw 60, motor bearing 61, deep integrated PCB62, power supply DC filtering area 63, signal switching connector 64, power supply OBC filtering area 65, shielding cover 66, conductive connection column 67, power supply power module assembly 68, magnetic ring seat assembly 69, metalized film capacitor 70, negative electrode connection copper bar 71, positive electrode connection copper bar 72, fuse 73, fuse switching connector a74, fuse switching copper bar b75, contactor 76, power distribution switching copper bar a77, distribution switching copper bar support 78, distribution switching copper bar b79, MOS pipe drive a80, M4 screw 81, DC adaptor 82, MOS pipe clamp plate subassembly 83, power transformer 84, power step-down transformer 85, power DC inductance 86, power board 87.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

With reference to fig. 1 to 14, an electric motor assembly 100 according to an embodiment of the present invention may include: an electronic control module, a motor 58 and a heat dissipation channel structure.

The heat dissipation channel structure can dissipate heat of the electric control module and the motor 58, and can integrate the heat dissipation structures of the electric control module and the motor 58 together, so that the heat dissipation structures can dissipate heat of the electric control module and the motor by using the same heat dissipation channel structure, the integration of the electric assembly 100 is facilitated, the space utilization rate of the electric assembly 100 is improved, and the production, maintenance, repair and other costs are reduced.

The heat dissipation channel structure may include: a first heat dissipation channel 19 and a second heat dissipation channel, the first heat dissipation channel 19 has a medium inlet 44, and a heat dissipation medium (for example, a coolant such as water) can be introduced into the first heat dissipation channel 19 through the medium inlet 44. The second heat dissipation channel communicates with the first heat dissipation channel 19, and the medium entering the first heat dissipation channel 19 from the medium inlet 44 can continue to flow into the second heat dissipation channel. The first heat dissipation channel 19 is attached to or penetrates through the electronic control module, the first heat dissipation channel 19 can dissipate heat of the electronic control module, the second heat dissipation channel is partially arranged on the outer side of the motor 58 in a surrounding mode, and the second heat dissipation channel can dissipate heat of the motor 58.

According to the electric assembly 100 of the embodiment of the invention, the heat dissipation structure of the motor 58 in the electric assembly 100 is integrated with the heat dissipation structure of the electronic control module, which is beneficial to the integration of the electric assembly 100 and improves the integration level of the electric assembly 100, thereby improving the space utilization rate of the electric assembly 100 and reducing the cost.

In addition, the length of the heat dissipation channel structure is shortened, namely the cost is reduced, and the flow resistance of the cooling liquid is also reduced, so that the energy consumption of driving cooling is reduced, and the heat dissipation channel structure is energy-saving and environment-friendly.

It should be noted that, in the present invention, cooling media such as water may flow through the first heat dissipation channel 19 and the second heat dissipation channel, or the first heat dissipation channel 19 and the second heat dissipation channel may be configured as heat transfer channels, that is, the first heat dissipation channel 19 and the second heat dissipation channel are configured as heat conductive materials, and the heat dissipation structure is configured outside the motor 58 and the electronic control module, so that the motor 58 and the electronic control module are cooled due to the principle that heat is spontaneously conducted from a high temperature region to a low temperature region.

The first heat dissipation channel 19 can be attached to the electronic control module, and when a fluid passes through the heat exchange channel, the heat can be dissipated to the electronic control module and the motor; in addition, the first heat dissipation channel 19 may penetrate through the electronic control module, that is, the first heat dissipation channel 19 passes through the inside of the electronic control module, so as to further effectively improve the heat dissipation effect of the first heat dissipation channel 19 on the electronic control module.

In addition, the second heat dissipation channel may be disposed in a partially enclosed structure, that is, the second heat dissipation channel is disposed around the motor 58, and the motor 58 may be partially enclosed by the second heat dissipation channel, so that heat is dissipated from the motor 58 through the second heat dissipation channel.

Wherein the second heat dissipation channel may surround 1/4 to 3/4 of the motor 58, alternatively, the second heat dissipation channel may be disposed along a circumferential direction of the motor 58, the second heat dissipation channel surrounding 1/4 to 3/4 of the motor 58 in the circumferential direction of the motor 58. For example, the combination of the first heat dissipation channel 19 and the second heat dissipation channel forms a half-enclosure structure for the motor 58.

Alternatively, the second heat dissipation channel in the present invention is provided in a structure surrounding the motor 58, wherein the second heat dissipation channel may be provided in a circular arc shape extending in a direction surrounding the motor 58, specifically, the second heat dissipation channel is provided in a form provided in a circumferential direction of the motor 58, and the motor 58 is provided inside the circular arc shape.

Optionally, the first heat dissipation channel 19 is disposed between the motor 58 and the electronic control module. The first heat dissipation channel 19 can dissipate heat with the electronic control module at the same time, and the heat of the motor 58 and the heat of the electronic control module are taken away through the first heat dissipation channel 19, so that the structure of the heat dissipation channel is effectively simplified, and the electric assembly 100 is suitable for integration, simplification and the like.

The first heat dissipation channel 19 and the second heat dissipation channel may be configured to surround the motor 58, the first heat dissipation channel 19 and the second heat dissipation channel may completely wrap the motor 58 in the circumferential direction of the motor 58, and the first heat dissipation channel 19 and the second heat dissipation channel may also include 1/4 to 3/4 of the motor 58 in the circumferential direction of the motor 58.

In addition, the second heat dissipation channel may be provided in a circular arc shape extending in the circumferential direction of the motor 58.

Optionally, one side of the first heat dissipation channel 19 is attached to the electronic control module, and the other side of the first heat dissipation channel 19 is attached to the motor 58, so that the first heat dissipation channel 19 is respectively attached to the electronic control module and the motor 58, and the first heat dissipation channel 19 is located between the electronic control module and the motor 58, thereby effectively simplifying a heat dissipation structure, simplifying a structure, and improving heat dissipation efficiency and effect.

Optionally, the electric powered assembly 100 further comprises a power module. The power module may provide the motor 58 with a power module adapted to convert an external power module into a power module suitable for the motor 58. The power module and the electric control module can be arranged in the same box body.

Optionally, the heat dissipation channel structure further comprises a third heat dissipation channel 31, the third heat dissipation channel 31 is communicated with the second heat dissipation channel, and the third heat dissipation channel 31 has a medium outlet 52. In other words, the heat dissipation channel structure includes a first heat dissipation channel 19, a second heat dissipation channel, and a third heat dissipation channel 31 connected in sequence, where the first heat dissipation channel 19 has a medium inlet 44, and the third heat dissipation channel 31 has a medium outlet 52, and in a use process, a heat dissipation medium may enter the first heat dissipation channel 19 from the medium inlet 44 and dissipate heat of the electronic control module, or the motor 58 and the electronic control module, and then a fluid enters the second heat dissipation channel to dissipate heat of the motor 58, and then a fluid enters the third heat dissipation channel 31 to dissipate heat of the power module, and finally is sent out from the medium outlet 52.

The third heat dissipation channel 31 may dissipate heat of the power module, and optionally, the third heat dissipation channel 31 is attached to or penetrates through the power module. For example, the third heat dissipation channel 31 is attached to the surface of the power module, or the power module is attached to the outer side surface of the third heat dissipation channel 31; the third heat dissipation channel 31 may also penetrate the power module. When the medium passes through the third heat dissipation channel 31, no matter the third heat dissipation channel 31 is attached to the power module or penetrates through the power module, the medium can dissipate heat of the third heat dissipation channel 31, and the heat dissipation effect of the power module is effectively improved.

Optionally, the power module includes a MOS transistor 34, a power DC inductor 86, a power step-down transformer 85, and a power transformer 84.

Because the MOS tube can generate larger heat in the operation process, the operation stability of the MOS tube is influenced by the temperature, the MOS can stably operate in a proper temperature range, and the temperature is too high or too low, therefore, the MOS tube 34 is attached to the third heat dissipation channel 31, the MOS tube is directly dissipated through the third heat dissipation channel 31, the heat dissipation efficiency and effect of the MOS tube are effectively improved, the operation stability of the electric assembly is improved, and the failure rate is reduced.

In addition, the power supply DC inductor 86, the power supply step-down transformer 85, and the power supply transformer 84 are distributed on the peripheral side of the third heat dissipation channel 31. The third heat dissipation channel 31 indirectly dissipates heat for the power supply DC inductor, the power supply step-down transformer and the power supply transformer, so that the power supply module can stably operate.

Specifically, a power supply DC inductor potting cavity 48, a power supply step-down transformer potting cavity 49, and a power supply transformer potting cavity 50 are disposed around the third heat dissipation channel 31, and are used for controlling the amount of potting adhesive of the electronic devices when the electronic devices are filled with the potting adhesive and preventing the electronic devices from being damaged by vibration. The power supply electric control box body 43 is also provided with an MOS tube water inlet 29, a third heat dissipation channel 31 and a medium outlet 52 for cooling the MOS tube. Wherein, power DC inductance embedment chamber 48 can be used for encapsulating power DC inductance 86, power step-down transformer embedment chamber 49 can be used for encapsulating power step-down transformer 85, and power transformer embedment chamber 50 can be used for encapsulating power transformer 84 to improve the radiating effect to the power module effectively.

Alternatively, the second heat dissipation channel includes a channel body 53 and the partition plate 27, the channel body 53 extending in a direction surrounding the motor 58. A partition plate 27 is provided in the passage body 53 and extends along the passage body 53, the partition plate 27 dividing one end of the passage body 53 and forming an inlet and an outlet of a second heat dissipation passage, wherein the inlet of the second heat dissipation passage is connected to the first heat dissipation passage 19, and the outlet of the second heat dissipation passage leads to the medium outlet 52. In other words, one side of the partition plate 27 communicates with the first heat dissipation channel 19, and a gap is formed between the other end of the partition plate 27 and the inner surface of the channel body 53 for forming a passage from the inlet to the outlet in the second heat exchange channel.

With reference to the foregoing embodiment, the heat dissipation channel structure includes a first heat dissipation channel 19, a second heat dissipation channel and a third heat dissipation channel 31, one end of the second heat dissipation channel connects the first heat dissipation channel 19 and the second heat dissipation channel, a partition 27 is disposed on the channel main body 53, the partition 27 separates a portion of the channel main body 53 connecting the first heat dissipation channel 19 from a portion connecting the second heat dissipation channel, and the partition 27 forms a circuitous flow channel in the channel main body 53, and after entering the second heat dissipation channel from the first heat dissipation channel 19, the medium will flow along the circuitous flow channel and then enter the third heat dissipation channel 31.

Specifically, the partition plate 27 may partition a first flow passage, one end of which is configured as an inlet of the second heat dissipation channel, and a second flow passage, one end of which is configured as an outlet of the second heat dissipation channel, in the channel body 53, wherein the inlet and the outlet are located at the same end of the channel body 53. And at the other end of the partition plate 27, a gap is formed between the partition plate 27 and the inner surface of the passage main body 53, through which the other end of the first flow passage and the other end of the second flow passage can be communicated. Here, a notch may be provided in the partition plate 27 to communicate the first flow passage with the second flow passage 28, and a recess may be provided in the inner surface of the passage main body 53 to communicate the first flow passage with the second flow passage 28 between the partition plate 27 and the inner surface of the passage main body 53.

Optionally, the surface of the partition 27 is provided with a first water blocking rib, and the first water blocking rib forms a circuitous flow passage. Thereby prolonging the medium passing time and improving the cooling effect. Alternatively, the first water blocking ribs may include a plurality of first water blocking ribs arranged along the medium flowing direction, the channel main body 53 has a first side surface and a second side surface respectively arranged along two sides perpendicular to the medium flowing direction, one of two adjacent first water blocking ribs extends to the first side surface and is separated from the second side surface, and the other extends to the second side surface of the channel main body 53 and is separated from the first side surface.

Specifically, as described above, the partition plate 27 divides the first flow passage and the second flow passage 28 in the passage main body 53, the first flow passage is located on the side of the partition plate 27 facing the motor 58, and the second flow passage 28 is located on the side of the partition plate 27 facing away from the motor 58, wherein the first water blocking rib may be provided on the side of the first partition plate 27 facing the motor 58, thereby configuring the first flow passage to extend in a circuitous manner; the first water-retaining rib can also be provided on the side of the first partition 27 facing away from the electric motor 58, so that the second flow channel 28 is designed to extend in a meandering manner.

Optionally, a positioning sliding groove 54 is formed on the inner surface of the second heat dissipation channel, and the edge of the first water blocking rib is embedded into the positioning sliding groove 54. Through location spout 54, can realize the quick location of baffle 27 and passageway main part 53, moreover, the sealed effect between first water blocking rib and the passageway main part 53 can be realized to the cooperation of location spout 54 and first water blocking rib to promote cooling efficiency.

The structure of the partition 27 and the flow direction thereof are schematically shown in fig. 4, and the operation principle and the function of the partition 27 are further explained through the figure. The partition plate 27 has studs a35 and b42 for mounting the partition plate 27 in the second heat dissipating channel 53 by screws. As can be seen from the figure, the studs a35 and b42 have a gap in the partition plate 27, and water flows into and out of the 2 studs respectively. As can be seen from the water route, the cooling medium flows in from the notch of the screw pillar a35 and is separated by the first water-retaining rib a36 into the motor cooling flow channel d26, the water flows through the motor cooling flow channel d26 and then flows into the motor cooling flow channel c25 separated by the first water-retaining rib b38 from the partition rib notch a37 of the first water-retaining rib a36, the cooling water flows out from the partition rib notch b39 of the first water-retaining rib b38, flows into the motor cooling flow channel b24 separated by the first water-retaining rib c40, flows into the motor cooling flow channel a23 between the screw pillar b42 and the first water-retaining rib c40 from the partition rib notch c41 of the first water-retaining rib c40, and flows out from the notch of the screw pillar b42 (equivalent to flow into the second flow channel 28 as shown in fig. 3 and finally flows into the third heat dissipation channel 31).

The first flow channel is formed by connecting a motor cooling flow channel d, a motor cooling flow channel c, a motor cooling flow channel b and a motor cooling flow channel a in sequence, and the second heat dissipation channel is formed by connecting the motor cooling flow channel d, the motor cooling flow channel c, the motor cooling flow channel b, the motor cooling flow channel a and the second flow channel 28 in sequence.

In addition, the positioning chute 54 extends in a direction parallel to the axis of the motor 58, and during the production and assembly of the electric motor assembly 100, the partition plate 27 can be inserted into the passage main body 53 in a direction parallel to the axis of the motor 58 while ensuring stable mounting of the partition plate 27 and improving stability after the partition plate 27 is mounted into the passage main body 53.

Optionally, a motor three-phase wire passing hole 51 is formed in the top end of the motor 58, the motor three-phase wire passing hole 51 is arranged in a direction perpendicular to the axis of the motor 58, and the motor three-phase wire 57 penetrates through the motor three-phase wire passing hole 51 to connect the motor 58 with the electronic control module. Thus, the three-phase line for connecting the motor 58 and the electronic control module can directly penetrate through the three-phase line connecting hole to connect the motor 58 and the electronic control module, the three-phase line does not need to cross over the wall between the motor 58 and the electronic control module from the outside, the length of the three-phase line is effectively shortened, and potential safety hazards are avoided. In addition, mutual interference between the three-phase line and other circuits is reduced.

Optionally, the electric powertrain 100 further comprises a transmission 59, the transmission 59 being located below the electronic control module and the power module. The transmission makes full use of the space below the electric control module and the power supply module, so that the space utilization rate is improved.

Alternatively, the second heat dissipation channel may be disposed to have one end connected to the first heat dissipation channel 19 and the third heat dissipation channel 31 and extend around the motor 58 in the present invention. Wherein the first heat dissipation channel 19, the second heat dissipation channel, and the third heat dissipation channel 31 may be configured in a substantially "Y" shaped configuration in a direction along the axis of the motor 58.

Optionally, in the present invention, the first heat dissipation channel and the third heat dissipation channel are arranged left and right, and the motor 58 and the transmission 59 are arranged left and right, wherein the first heat dissipation channel 19 is disposed above the motor 58, the third heat dissipation channel 31 is disposed above the transmission 59, two ends of the second heat dissipation channel are connected to the first heat dissipation channel 19 and the third heat dissipation channel 31, and the other end of the second heat dissipation channel extends around the motor 58. An inlet of the second heat dissipation channel is connected to an end of the first heat dissipation channel 19 near the third heat dissipation channel 31, an outlet of the second heat dissipation channel is connected to an end of the third heat dissipation channel 31 near the first heat dissipation channel 19, and the second heat dissipation channel is connected between the motor 58 and the transmission 59.

Specifically, a first opening 22 is disposed at an end of the first heat dissipation channel 19 close to the third heat dissipation channel 31, a second opening 29 is disposed at an end of the third heat dissipation channel 31 close to the first heat dissipation channel 19, an inlet of the second heat dissipation channel is connected to the first opening 22, and an outlet of the second heat dissipation channel is connected to the second opening 29.

In addition, the partition plate 27 in the present invention has an arc-shaped plate shape extending in a direction surrounding the motor 58.

Optionally, the electric assembly 100 of the present invention includes an electric control module, a power module, a motor 58, a transmission 59, and a heat dissipation channel structure, wherein the electric control module, the power module, the motor 58, the transmission 59, and the heat dissipation channel structure may all be disposed in the same box. Meanwhile, the heat dissipation channels are used for dissipating heat of the modules, the structure of the heat dissipation channels is simplified, and all the components are integrated together. The structure of electric motor assembly 100 is simplified, and the performance of electric motor assembly 100 is improved.

Optionally, a second water blocking rib is arranged in the first heat dissipation channel 19 to form a circuitous flow channel. The time of the medium in the first heat dissipation channel 19 is prolonged, and the medium is promoted to perform sufficient heat exchange in the first heat dissipation channel 19, so that the heat dissipation effect of the heat dissipation structure is effectively improved, and the performance of the electric assembly 100 is improved.

Specifically, a plurality of second water blocking ribs are sequentially arranged in the first heat dissipation channel 19 from the inlet to the outlet, and the plurality of second water blocking ribs are arranged in a staggered manner, so that a circuitous extending channel is formed.

In the invention, the first heat dissipation channel 19 and the second heat dissipation channel are combined, and the structures such as the power module, the electric control module, the motor 58 and the like are arranged around the heat dissipation channel, so that the purpose that one heat dissipation channel dissipates heat for a plurality of devices is achieved, and connecting structural members of the related heat dissipation channels are reduced.

In addition, the whole heat dissipation channel structure of the power module, the motor 58, the electronic control module and the power module in the invention is integrally communicated, and only one medium inlet 44 and one medium outlet 52 are provided, so that the pipeline connection of each heat dissipation module is reduced. Compare split type structure in the existing design, when guaranteeing to have the cooling effect of preferred, optimized cooling circuit, reduced cooling pipeline length. So, the cooling effect is good and compromise the space compactness, has reduced assembly cost simultaneously.

The electric control module in the invention can comprise components such as an IGBT17 and an IGBT driver 16, and the power supply module can comprise components such as an MOS tube 34 and an MOS tube driver 33.

In addition, in the invention, the box body is provided with the motor bin, and the position above the motor bin, which is close to the first heat exchange channel, is provided with the three-phase line passing hole, so that the three-phase line of the motor 58 can directly pass through the passing hole to be connected with the electric control module (or IGBT), and a three-phase injection molding part and a copper bar for switching the electric control module and the three-phase line 57 of the motor are omitted.

The power module, the electric control module, the motor 58 and the transmission shell are made into a box shell, the heat dissipation channels of the power module, the electric control module, the motor 58 and the transmission shell are mutually communicated for heat dissipation, the water channel connection of each module is omitted, and the first heat dissipation channel 19 and the local heat dissipation channel of the motor 58 are shared. Meanwhile, after the power module, the box body of the electronic control module and the shell of the motor 58 are integrated, the structure is firmer, box body connection is omitted, meanwhile, the space above the rotating shaft of the gearbox is fully utilized, and an additional supporting structure in the process of utilizing the space is omitted in the integrated box. Thus, the space of the whole product is saved, the weight is reduced, and the product is lighter.

As shown in fig. 1 and fig. 2, the electronic control assembly of the present invention is schematically illustrated, the housing of the electronic control assembly includes an upper cover 2 and a housing 6, the power module, the electronic control module, the motor 58 and the transmission 59 are integrated on the housing 6, the upper cover 2 further has an upper small cover a1 for conveniently installing the dc bus, the dc charging line terminal and the fuse, and an upper small cover b3 for installing the ac charging line terminal; the periphery of the box shell 6 is provided with an alternating current charging plug-in 4, a water inlet pipe 5, a gearbox cover 7, a direct current bus 8, a PTC plug-in 9, a compressor plug-in 10, a direct current charging wire 11, a DC adapter 12, a water outlet pipe 13, a signal plug-in 14, a motor cover 15 and other parts.

Fig. 3 is a schematic diagram showing the structure of the heat dissipation channel of the electronic control assembly and the flow direction of the medium, and from this schematic diagram, we can see that the cooling water enters the first heat dissipation channel 19 from the water inlet pipe 5, the IGBT17 is above the second heat dissipation channel 19, the motor compartment 20 is below the second heat dissipation channel, at this time, a part of the heat dissipation flow channels of the motor 58 share the first heat dissipation channel 19, and the first heat dissipation channel 19 is sealed by friction welding through the first cover plate 18. The cooling medium flows into the second heat dissipation channel 53 from the first opening 22 at the other end of the first heat dissipation channel 19. The second heat dissipating channel 53 is provided with a partition 27, and the partition 27 partitions the channel body of the first heat dissipating channel 19 into five small areas, namely a motor cooling channel a23, a motor cooling channel b24, a motor cooling channel c25, a motor cooling channel d26 and a second channel 28. The motor cooling flow channel a23, the motor cooling flow channel b24, the motor cooling flow channel c25, and the motor cooling flow channel d26 are configured as the first flow channel, and the second flow channel 28 is configured as the second flow channel 28.

After cooling the motor 58, the cooling medium flows into the third heat dissipation channel 31 through the second opening 29 above the second flow channel 28, a second cover plate 32 sealed by friction welding is arranged above the third heat dissipation channel 31, and the MOS tube 34 is tightly attached to the second cover plate 32. The cooling medium flows through the third heat dissipation channel 31 and then flows out from the medium outlet.

The purpose of dividing the second heat dissipation channel into several small water channels is to prevent water from flowing into the second heat dissipation channel from the first opening 22 and directly flowing out of the second opening 29 without passing through the regions a, b, c, and d of the motor cooling channels, so that the regions a, b, c, and d of the motor cooling medium channels of the motor 58 become dead water regions and do not have the function of cooling the motor 58. The whole power supply, the motor 58 and the electric control heat dissipation flow channel are integrally communicated, only one water inlet pipe and one water outlet pipe are provided, and the water pipe connection of each heat dissipation water channel module is reduced.

As shown in fig. 5 and 6, the structure of the housing is schematically illustrated, and it can be seen from the figure that the housing 6 includes three major parts, namely, a power supply electronic control cavity 43, a transmission cavity 47 and a motor cavity 20, which are respectively used for assembling a power supply electronic control device, a transmission gear and a motor core. The power supply electric control cavity 43 is also provided with an IGBT water channel 19, the IGBT water channel 19 is divided into 3 small water channels by the second water blocking ribs a45 and the second water blocking ribs b46, so that when a cooling medium flows into the water outlet of the IGBT water channel from the medium inlet 44 and flows out of the water outlet of the IGBT water channel, the water channel forms an S shape, the heat dissipation area of the area is enlarged, and the local water channels of the IGBT and the motor 58 are shared. The power supply electric control box body 43 is also respectively provided with a power supply DC inductance encapsulating cavity 48, a power supply step-down transformer encapsulating cavity 49 and a power supply transformer encapsulating cavity 50, and the power supply DC inductance encapsulating cavity, the power supply step-down transformer encapsulating cavity and the power supply transformer encapsulating cavity are used for controlling the glue filling amount of the electronic devices when the electronic devices are filled with the encapsulating glue and preventing the electronic devices from being damaged by vibration. The power supply electric control box body 43 is also provided with an MOS tube water inlet 29, a third heat dissipation channel 31 and a medium outlet 52 for cooling the MOS tube. Because the power supply electric control box body 43 is heavier after being filled with electronic devices, the supporting ribs 30 are additionally arranged below the box body, and the space above the rotating shaft can be fully utilized. A second heat dissipation channel for cooling the motor 58 is formed beside the motor compartment 20, and a positioning chute 54 is formed in the second heat dissipation channel for installing and fixing the aforementioned water channel partition plate 27 of the motor 58. A three-phase wire passing hole 51 of the motor is formed in the position, close to the IGBT water channel, above the motor bin 20, so that three-phase wires of the motor 58 can directly pass through the via hole to be connected with the IGBT, and three-phase injection molding parts and copper bars for switching the IGBT and the three-phase wire 57 of the motor are omitted.

In conclusion, the technical scheme of our department is characterized in that the shell of the power supply/electric control/motor is combined into an integrated box body, and the MOS tube of the power supply, the electric control IGBT and the heat dissipation water channel of the motor are integrally communicated and locally shared, so that the connection and waterproof structures among the heat dissipation water channels are reduced. The water channel partition plate structure is added to the motor water channel, so that the situation that dead water is generated in the local part of the motor water channel and the cooling effect cannot be achieved is prevented, and the cooling area of the motor water channel is effectively guaranteed. Meanwhile, the 3 water channels are arranged on the same box body, so that the connecting structure among the water channels is reduced, and the total weight and the cost of the vehicle are favorably reduced.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An electric powertrain, comprising: automatically controlled module, motor and heat dissipation channel structure, heat dissipation channel structure includes:

a first heat dissipation channel having a media inlet; and the number of the first and second groups,

the second heat dissipation channel is communicated with the first heat dissipation channel;

the first heat dissipation channel is attached to or penetrates through the electric control module, and the second heat dissipation channel is partially arranged on the outer side of the motor in a surrounding mode.

2. The electrical assembly of claim 1, wherein the first heat dissipation channel is disposed between the motor and the electronic control module, and one side of the first heat dissipation channel is attached to the electronic control module and the other side of the first heat dissipation channel is attached to the motor.

3. The electrical assembly of claim 1, further comprising a power module, the heat sink channel structure further comprising:

a third heat dissipation channel in communication with the second heat dissipation channel, the third heat dissipation channel having a media outlet;

and the third heat dissipation channel is attached to or penetrates through the power supply module.

4. The electrical assembly of claim 3, wherein the power module comprises a MOS transistor, a power DC inductor, a power step-down transformer, a power transformer; the MOS pipe is attached to the third heat dissipation channel, and the power supply DC inductor, the power supply step-down transformer and the power supply transformer are distributed on the peripheral side of the third heat dissipation channel.

5. The electrical assembly of claim 1, wherein the second heat dissipation channel comprises:

a channel body extending in a direction around the motor;

the partition plate is arranged in the channel main body and extends along the channel main body, one end of the channel main body is separated by the partition plate, one side of the partition plate is communicated with the first heat dissipation channel, and a gap is formed between the other end of the partition plate and the inner surface of the channel main body.

6. The electric assembly according to claim 5, wherein a first water blocking rib is arranged on the surface of the partition plate, and the first water blocking rib forms a circuitous flow passage.

7. The electric assembly according to claim 6, wherein a positioning sliding groove is formed on an inner surface of the second heat dissipation channel, the positioning sliding groove extends in a direction parallel to an axis of the motor, and an edge of the first water blocking rib is embedded in the positioning sliding groove.

8. The electric assembly according to claim 1, wherein a motor three-phase line passing hole is formed in the top end of the motor and arranged in a direction perpendicular to the axis of the motor, and the motor three-phase line penetrates through the motor three-phase line passing hole to connect the motor and the electric control module.

9. The electric powertrain of claim 3, further comprising a transmission positioned below the electronic control module and the power module.

10. The electrical assembly of claim 1, wherein the electrical assembly includes the electronic control module, a power module, a motor, a transmission, and the heat sink channel structure and are all disposed within a same housing.

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