CN214822586U - Natural cooling drive control system for electric automobile - Google Patents

Abstract

The utility model relates to a natural cooling drive control system for electric automobile, including motor and dc-to-ac converter, the motor includes casing subassembly and rear end cap, rear end cap and casing subassembly integrated into one piece, the dc-to-ac converter includes forced air cooling board and contravariant power module, forced air cooling board and rear end cap fold the installation cavity that forms the dc-to-ac converter after the assembly, be equipped with the heat insulating board in the installation cavity, split into first cavity and second cavity with the cavity, the three-phase input interface of motor sets up in first cavity, contravariant power module installs in the second cavity and the inside wall of laminating forced air cooling board, be provided with first heat dissipation gusset on the outer wall of forced air cooling board, the periphery of rear end cap is equipped with second heat dissipation gusset, casing subassembly's outer lane distributes and has third heat dissipation gusset. Compared with the prior art, the utility model has the advantages of make the structure size of system compact, whole volume reduces substantially, the automatic assembly of being convenient for, motor and dc-to-ac converter all adopt natural air cooling's radiating mode moreover, help cost optimization.

Description

Natural cooling drive control system for electric automobile

Technical Field

The utility model relates to a drive control system especially relates to a natural cooling drive control system for electric automobile.

Background

With the continuous development of new energy vehicles, higher and higher requirements are put forward on motor controllers in the new energy vehicles. The traditional motor controller generally adopts a water cooling or oil cooling mode to dissipate heat of the motor and the inverter, and although the cooling effect of the water cooling or oil cooling heat dissipation mode is good, the liquid cooling and oil cooling structure is generally complex and large in size, so that the motor controller is not suitable for the development direction of miniaturization and light weight of the motor controller.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drive control system for natural cooling electric automobile in order to overcome the defect that above-mentioned prior art exists, realize control system's natural cooling, effectively simplify the structure, reduce control system's volume.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a natural cooling drive control system for electric automobile, includes motor and dc-to-ac converter, the motor includes casing subassembly and rear end cap, rear end cap and casing subassembly integrated into one piece, the dc-to-ac converter includes forced air cooling board and contravariant power module, forced air cooling board and rear end cap fold the installation cavity that forms the dc-to-ac converter after the assembly, are equipped with the heat insulating board in the installation cavity, split into first cavity and second cavity with the cavity, and the three-phase input interface of motor sets up in first cavity, contravariant power module installs in the second cavity and the inside wall of laminating forced air cooling board, be provided with first heat dissipation gusset on the outer wall of forced air cooling board, the periphery of rear end cap is equipped with second heat dissipation gusset, the outer lane distribution of casing subassembly has third heat dissipation gusset.

Further, contravariant power module includes power board, capacitive control board and guide plate, the setting of power board laminating forced air cooling board, the capacitive control board sets up and fixes directly over the power board to with power board electrical connection, the guide plate sets up in the capacitive control board top, and respectively with the input of capacitive control board and the output electrical connection of power board.

Furthermore, the guide plate is an integrated plastic-coated component integrating a direct current input copper bar and an alternating current output copper bar, and comprises a direct current input end, a direct current output end, an alternating current input end and an alternating current output end, wherein the direct current input end penetrates through the heat insulation plate to be connected with a high-voltage wire harness at the battery end of the whole vehicle; the direct current output end is connected with the two-phase input end on the capacitor control board; the alternating current input end is connected with the three-phase output end of the power board; and the alternating current output end penetrates through the heat insulation plate to be connected with the three-phase input end of the motor.

Furthermore, an alternating current outlet and a direct current outlet are distributed on the heat insulation plate, the direct current output end of the guide plate penetrates through the direct current outlet, and the alternating current output end of the guide plate penetrates through the alternating current outlet.

Furthermore, a rectangular boss is arranged on the outer wall of the air cooling plate, and the first heat dissipation rib plates are vertically arranged and connected on the rectangular boss.

Furthermore, the heat insulation plate is a metal plate with two side surfaces coated with heat insulation coatings.

Furthermore, the upper surface and the lower surface of the deflector are both covered with heat insulation materials.

Furthermore, a rectangular sinking groove is formed in the inner side wall of the air cooling plate, and the inverter power module is installed in the rectangular sinking groove.

Furthermore, threaded holes which are arranged in parallel are distributed at the bottom of the rectangular sinking groove, and the inverter power module is fixed in the rectangular sinking groove through bolts.

Furthermore, the widths of the first heat dissipation rib plate, the second heat dissipation rib plate and the third heat dissipation rib plate are all 2-4 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. according to the invention, the motor and the inverter are integrally designed, the inverter part is completely arranged on the bottom surface of the air cooling plate to form an installation block, the shell assembly is also integrally assembled with the rear end cover as the installation block, and the air cooling plate installation block is integrally arranged on the upper surface of the rear end cover, so that a more compact assembly design can be realized, a modular design is realized, the structural size of the system is compact, the integral volume is greatly reduced, the automatic assembly is convenient, and the motor and the inverter both adopt a natural air cooling heat dissipation mode, thereby being beneficial to cost optimization.

2. The rear end cover is internally provided with the heat insulation plate, the cavity is divided into the first cavity and the second cavity, the first cavity is communicated with the three-phase output interface in the motor, the heat is more, the inverter part is mainly installed in the second cavity, the heat is less, the heat insulation plate can prevent the heat radiated from the interior of the motor to the interior of the first cavity from being diffused to the second cavity, the temperature rise of the inverter exceeds the standard, the risk that the higher temperature in the motor interferes with the temperature rise of the inverter can be effectively reduced, and the better temperature rise effect is facilitated.

3. The second heat dissipation rib plates are arranged on the periphery of the rear end cover, so that the effect of quickly dissipating heat can be achieved, heat inside the first cavity assembled by the inverter can be quickly dissipated, and the effect of enhancing the strength of the rear end cover can be achieved.

4. The heat dissipation rib plates are arranged on the casing and the air cooling plate, the heat dissipation area is increased by the heat dissipation rib plates, so that the contact area between the heat dissipation rib plates and the air is increased in the running process of the electric vehicle, the heat exchange between the motor and the air inverter is more convenient, the heat generated by the motor and the air inverter is quickly taken away, and the heat dissipation performance of a drive control system is improved.

5. The guide plate has moulded direct current input copper bar and interchange output copper bar simultaneously to cover in the capacitance control board top as a whole, and the top layer has a layer of thermal insulation material moreover, has avoided the copper bar to generate heat and has aroused the too high phenomenon of capacitance control board temperature rise, also has a layer of thermal insulation material on the heat insulating board both sides wall simultaneously, also can very high drip inside the inside heat diffusion of separation motor to the dc-to-ac converter, has improved drive control system's heat dissipation situation well.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the motor assembly.

Fig. 3 is a schematic structural diagram of the inverter power module.

Fig. 4 is a schematic structural diagram of the rear end cap.

Fig. 5 is a schematic structural view of the air-cooled panel.

Fig. 6 is a schematic view of a baffle configuration.

Reference numerals: 1. the motor, 11, the housing assembly, 111, third heat dissipation gusset, 12, the rear end cap, 121, second heat dissipation gusset, 2, the inverter, 21, the air-cooled panel, 211, first heat dissipation gusset, 212, the rectangle boss, 213, the rectangle heavy groove, 22, the contravariant power module, 221, the power board, 222, the capacitance control board, 223, the guide plate, 223a, the direct current input end, 223b, the direct current output end, 223c, the alternating current input end, 223d, the current output end, 23, the heat insulating board, 231, the alternating current outlet, 232, the direct current outlet, 3, the installation cavity, 31, the first cavity, 32, the second cavity.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and 2, the present embodiment provides a natural cooling drive control system for an electric vehicle, including an inverter 2 electrically and mounted on an end surface of a shaft of a motor 1. The motor 1 comprises a shell component 11 and a rear end cover 12, wherein the rear end cover 12 and the shell component 11 are integrally manufactured. The inverter 2 comprises an air cooling plate 21 and an inverter power module 22, the air cooling plate 21 and the rear end cover 12 are folded and assembled to form an installation cavity 3 of the inverter 2, and the inverter power module 22 is installed in the installation cavity 3. A first heat dissipation rib plate 211 is arranged on the outer wall of the air cooling plate 21; a second heat dissipation rib plate 121 is arranged on the periphery of the rear end cover 12; the outer ring of the shell component 11 is distributed with third heat dissipation rib plates 111, and the third heat dissipation rib plates 111 can increase the heat dissipation area of the motor 1 and improve the strength of the shell component 11.

As shown in fig. 3 and 4, the inverter power module 22 includes a power board 221, a capacitive control board 222, and a baffle 223. The power board 221 is attached to the air cooling board 21, the capacitance control board 222 is disposed and fixed right above the power board 221 and electrically connected to the power board 221, and the guide board 223 is disposed above the capacitance control board 222 and electrically connected to the input terminal of the capacitance control board 222 and the output terminal of the power board 221, respectively. A rectangular sinking groove 213 with the depth of 20mm is arranged on the inner side wall of the air cooling plate 21, threaded holes which are arranged in parallel are distributed at the bottom of the rectangular sinking groove 213, and a power plate 221 of the inverter power module 22 is fixed in the rectangular sinking groove 213 through bolts. The outer wall of the air cooling plate 21 is provided with a rectangular boss 212, and the rectangular boss 212 is provided with a first heat dissipation rib plate 211 perpendicular to the length direction. Each first heat dissipation rib plate 211 has a width of 3mm and a height of 45 mm.

As shown in fig. 4, a heat shield plate 23 is provided in the installation cavity 3 to divide the cavity into a first cavity 31 and a second cavity 32. The heat insulating plate 23 is a metal plate having both side surfaces coated with a heat insulating coating and has a width of 3 mm. The first cavity 31 is communicated with a three-phase output interface inside the motor 1, heat is more, the inverter 2 part is mainly installed on the second cavity 32, heat is less, the heat insulation plate 23 is located between the first cavity 31 and the second cavity 32 and separates the first cavity 31 from the second cavity 32, heat dissipated from the inside of the motor 1 to the inside of the first cavity 31 can be prevented from being diffused to the second cavity 32, and the inverter 2 is caused to exceed standard in temperature rise. An ac outlet 231 and a dc outlet 232 are also distributed on the heat shield 23. The ac outlet 231 and the dc outlet 232 each have a rectangular configuration. The second heat dissipation rib plates 121 on the periphery of the rear end cover 12 are in rib structures with the height of 18mm and the width of 2mm, and can play a role in quickly dissipating heat and also can enhance the strength of the end cover.

As shown in fig. 5, the deflector 223 is an integrated plastic-coated component integrating the dc input copper bar and the ac output copper bar, and includes a dc input end 223a, a dc output end 223b, an ac input end 223c, and an ac output end 223 d. The direct current input end 223a is fixedly connected with a high-voltage wire harness at the battery end of the whole vehicle, the direct current output end 223b penetrates through the direct current outlet 231 on the heat insulation plate 23 to be connected with the two-phase input end on the capacitor control plate 222, the alternating current input end 223c is connected with the three-phase output end of the power plate 221, and the alternating current output end 223d penetrates through the alternating current outlet 231 on the heat insulation plate 23 to be connected with the three-phase input end of the motor 1. The guide plate 223 in this embodiment has moulded direct current input copper bar and interchange output copper bar simultaneously to cover above the capacitance control board 222 as a whole, and the top layer has a layer of thermal insulation material, has avoided the copper bar to generate heat and has aroused the too high phenomenon of capacitance control board 222 temperature rise, also has a layer of thermal insulation material on the wall of heat insulating board 23 both sides simultaneously, also can be very high to drip inside heat diffusion to the dc-to-ac converter 2 of separation motor 1, has improved drive control system's heat dissipation situation well.

The specific assembly process of this implementation is as follows:

firstly, mounting a shell component 11 on the bottom surface of a rear end cover 12 to complete the assembly of the motor 1; then, the bottom of the power plate 221 is coated with heat-conducting silicone grease and then is installed on the rectangular sink groove 213 on the air cooling plate 21, then the capacitance control plate 222 is installed above the power plate 221, and then the guide plate 223 is installed on the direct-current input end 223a of the capacitance control plate 222 and the alternating-current input end 223c of the power plate 221, so that the installation of the whole inverter 2 is completed; finally, the inverter 2 is mounted upside down on the upper surface of the rear end cover 12, and the parts of the inverter 2 are mainly in the first cavity 31, so that the assembly of the whole drive control system is completed.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The natural cooling drive control system for the electric automobile is characterized by comprising a motor (1) and an inverter (2), wherein the motor (1) comprises a shell component (11) and a rear end cover (12), the rear end cover (12) and the shell component (11) are integrally formed, the inverter (2) comprises an air cooling plate (21) and an inversion power module (22), the air cooling plate (21) and the rear end cover (12) are folded and assembled to form a mounting cavity (3) of the inverter (2), a heat insulation plate (23) is arranged in the mounting cavity (3) to divide the cavity into a first cavity (31) and a second cavity (32), a three-phase input interface of the motor (1) is arranged in the first cavity (31), the inversion power module (22) is arranged in the second cavity (32) and attached to the inner side wall of the air cooling plate (21), a first heat dissipation rib plate (211) is arranged on the outer wall of the air cooling plate (21), and a second heat dissipation rib plate (121) is arranged on the periphery of the rear end cover (12), and a third heat dissipation rib plate (111) is distributed on the outer ring of the shell component (11).

2. The natural cooling drive control system for the electric vehicle as recited in claim 1, wherein the inverter power module (22) includes a power board (221), a capacitive control board (222), and a baffle plate (223), the power board (221) is disposed in conformity with the air-cooled board (21), the capacitive control board (222) is disposed and fixed directly above the power board (221) and is electrically connected to the power board (221), and the baffle plate (223) is disposed above the capacitive control board (222) and is electrically connected to an input end of the capacitive control board (222) and an output end of the power board (221), respectively.

3. The natural cooling driving control system for the electric automobile according to claim 2, wherein the deflector (223) is an integrated plastic-coated component integrating a direct current input copper bar and an alternating current output copper bar, and comprises a direct current input end (223a), a direct current output end (223b), an alternating current input end (223c) and an alternating current output end (223d), wherein the direct current input end (223a) penetrates through the heat insulation plate (23) and is connected with a high-voltage wire harness at the battery end of the whole automobile; the direct current output end (223b) is connected with two-phase input ends on the capacitance control plate (222); the alternating current input end (223c) is connected with the three-phase output end of the power board (221); the alternating current output end (223d) penetrates through the heat insulation plate (23) to be connected with the three-phase input end of the motor (1).

4. The free cooling driving control system for the electric vehicle as claimed in claim 3, wherein the heat insulation plate (23) is distributed with an ac outlet (231) and a dc outlet (232), the dc output end (223b) of the deflector (223) passes through the dc outlet (232), and the ac output end (223d) of the deflector (223) passes through the ac outlet (231).

5. The natural cooling drive control system for the electric automobile according to claim 1, wherein a rectangular boss (212) is provided on an outer wall of the air-cooling plate (21), and the first heat dissipation rib plates (211) are vertically arranged on the rectangular boss (212).

6. The free-cooling drive control system for an electric vehicle according to claim 1, wherein the heat insulating plate (23) is a metal plate having both sides coated with a heat insulating coating.

7. The free cooling drive control system for an electric vehicle as set forth in claim 2, wherein the upper and lower surfaces of the deflector (223) are covered with a heat insulating material.

8. The free cooling drive control system for the electric vehicle as claimed in claim 1, wherein a rectangular sink (213) is provided on an inner sidewall of the air-cooling panel (21), and the inverter power module (22) is installed in the rectangular sink (213).

9. The natural cooling drive control system for the electric vehicle as recited in claim 8, wherein the rectangular sinking groove (213) has parallel threaded holes distributed at the bottom thereof, and the inverter power module (22) is fixed in the rectangular sinking groove (213) by bolts.

10. The natural cooling drive control system for the electric automobile according to claim 1, wherein the widths of the first heat dissipation rib plate (211), the second heat dissipation rib plate (121) and the third heat dissipation rib plate (111) are all 2-4 mm.

Images