CN112224033A

CN112224033A - Controller, power assembly and electric automobile

Info

Publication number: CN112224033A
Application number: CN201910582133.7A
Authority: CN
Inventors: 喻凤传; 张星春
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2021-01-15
Anticipated expiration: 2039-06-30
Also published as: CN112224033B

Abstract

The invention belongs to the technical field of electric automobiles, and particularly relates to a controller, a power assembly and an electric automobile. The controller comprises a box body, a power supply assembly, an electric control assembly and a heat dissipation assembly, wherein the box body is provided with a first cavity and a second cavity, the electric control assembly is installed in the first cavity, the power supply assembly is installed in the second cavity, the heat dissipation assembly is arranged in the box body and located between the first cavity and the second cavity, and the heat dissipation assembly is used for dissipating heat of the power supply assembly and the electric control assembly. The controller integrates the electric control assembly, the power supply assembly and the heat dissipation assembly into one box body, the electric control assembly and the power supply assembly can share the heat dissipation assembly, the controller is simple in structure, and more integration functions are achieved in the box body, so that the overall occupied space, weight and cost of the controller are reduced, and the electric automobile is lighter.

Description

Controller, power assembly and electric automobile

Technical Field

The invention belongs to the technical field of electric automobiles, and particularly relates to a controller, a power assembly and an electric automobile.

Background

With the development of the current social technology, electric vehicles are more and more popular, and the requirements of users on electric vehicles are higher and higher, so that the functional integration of controllers of electric vehicles is more and more, but the volume requirements are smaller and smaller. In the prior art, controllers of electric vehicles, such as a motor drive controller, a vehicle controller, a bsg (belt drive Starter generator) controller, etc., are generally relatively single in integrated function, and a power supply module and the controller are both independent boxes for installation and each have an independent heat dissipation system, so that the controller occupies a relatively large space, and hardly meets the high requirements for function integration at present, and the controller occupies a large space and is relatively heavy.

Disclosure of Invention

The invention provides a controller, a power assembly and an electric automobile, wherein the controller is simple in structure, the accommodating volume in a box body is larger, the integrated functions are more, the overall occupied space, weight and cost of the controller are further reduced, and the electric automobile is lighter and more handy; meanwhile, the structure and the circuit of the heat dissipation assembly and the like in the controller can be shared, and the cost is further reduced.

In order to solve the above technical problems, in one aspect, an embodiment of the present invention provides a controller, including a box, a power supply assembly, an electronic control assembly, and a heat dissipation assembly, where the box is provided with a first cavity and a second cavity, the electronic control assembly is installed in the first cavity, the power supply assembly is installed in the second cavity, the heat dissipation assembly is disposed in the box and located between the first cavity and the second cavity, and the heat dissipation assembly is configured to dissipate heat of the power supply assembly and the electronic control assembly at the same time.

Optionally, the heat sink assembly comprises a heat sink channel passing through the tank; the upper and lower opposite sides of the heat dissipation water channel are respectively provided with a first heat dissipation surface and a second heat dissipation surface, the electric control assembly is arranged on the first heat dissipation surface, and the power supply assembly is arranged on the second heat dissipation surface.

Optionally, an assembly surface is arranged on the first heat dissipation surface, the assembly surface is located on one side, away from the power supply module, of the heat dissipation water channel, and the electronic control module is mounted on the assembly surface.

Optionally, the electric control assembly includes a bridge arm converter and a first PCB, the IGBT of the bridge arm converter is fixed to the first PCB, and the first PCB is mounted on the mounting surface.

Optionally, the heat dissipation assembly further comprises a water channel cover plate arranged on the second heat dissipation surface, the water channel cover plate is fixedly connected with the box body, and the power supply assembly is installed on the water channel cover plate.

Optionally, the water channel cover plate is fixedly connected with the box body through friction welding.

Optionally, the power module includes an OBC and a bidirectional DC/DC, the power devices of the OBC and the bidirectional DC/DC are mounted on a second PCB, the second PCB is fixedly connected to the tank and/or the waterway cover plate, and the second PCB is attached to the waterway cover plate.

Optionally, the controller further includes an upper cover and a lower cover, an edge of the upper cover is connected to an opening edge of the first cavity in a sealing manner, and an edge of the lower cover is connected to an opening edge of the second cavity in a sealing manner.

Optionally, the controller further comprises a power supply module, wherein the power supply module comprises a direct current bus plug-in, a capacitor and a three-phase copper bar assembly electrically connected with the motor; the battery passes through direct current bus plug-in components with the electric capacity electricity is connected, the electric capacity pass through first PCB board with the three-phase copper bar subassembly electricity is connected.

Optionally, the power supply module further includes a control signal plug, and the control signal plug is connected to the first PCB.

Optionally, the controller further comprises a power distribution assembly mounted within the first cavity or/and the second cavity.

Optionally, the power distribution assembly includes a dc charging module, the dc charging module includes a wire nose and a contactor, the dc power supply is electrically connected to the contactor through the wire nose, and the contactor is electrically connected to the dc bus plug-in.

Optionally, the power distribution assembly includes an ac charging module, the ac charging module includes an ac charging socket and a first fuse, the ac power supply is electrically connected to the first fuse through the ac charging socket, and the first fuse is electrically connected to the dc bus plug-in.

Optionally, the power distribution assembly comprises a second fuse, a compressor socket and a PTC socket, both of which are electrically connected with the dc bus bar insert through the second fuse; and the battery heating socket is electrically connected with the direct current bus plug-in unit through the third fuse.

On one hand, the embodiment of the invention also provides a power assembly, which comprises a power assembly, a support body and a controller, wherein the power assembly comprises a rotating shaft, and the support body is sleeved on the rotating shaft; an accommodating space is formed between the power assembly and the support body; the controller is installed on the supporting body and the power assembly, and at least one part of the controller is located in the accommodating space.

Optionally, the power assembly includes an electric machine and a transmission, which are coupled and integrated in one housing.

Optionally, the power assembly further includes a bearing installed in the support body, and the support body is sleeved on the rotating shaft through the bearing.

Optionally, the controller comprises an upper box body and a lower box body arranged at the bottom end of the upper box body in a protruding manner; the upper box body is arranged on the supporting body and the power assembly, and at least one part of the lower box body is positioned in the accommodating space.

Optionally, a supporting surface is arranged at the top end of the supporting body, and the upper box body is mounted on the supporting surface and the power assembly.

Optionally, a first mounting surface and mounting feet are arranged on the upper box body; the support body is also provided with a first fixing hole; the first mounting surface is abutted to the supporting surface, and the mounting foot is in screw connection with the first fixing hole.

On one hand, the embodiment of the invention also provides an electric automobile which comprises the controller.

The controller comprises a box body, a power supply assembly, an electric control assembly and a heat dissipation assembly, wherein the box body is provided with a first cavity and a second cavity, the electric control assembly is installed in the first cavity, the power supply assembly is installed in the second cavity, the heat dissipation assembly is arranged in the box body and located between the first cavity and the second cavity, and the heat dissipation assembly is used for dissipating heat of the power supply assembly and the electric control assembly. According to the controller, the electric control assembly, the power supply assembly and the heat dissipation assembly are integrated in the box body, the electric control assembly and the power supply assembly can share the heat dissipation assembly, the controller is simple in structure, and more integrated functions are achieved in the box body, so that the overall occupied space, weight and cost of the controller are reduced, and an electric automobile is lighter; meanwhile, a power distribution system (comprising a power supply module, a direct current charging module, an alternating current charging module and the like) of the controller can be integrated in a box body of the controller, the using quantity of direct current bus plug-ins and the like can be reduced, and the cost and the occupied space of the controller are further reduced.

Drawings

Fig. 1 is a schematic view of an assembly structure of a controller according to an embodiment of the present invention.

Fig. 2 is a sectional view of a controller according to an embodiment of the present invention.

Fig. 3 is an exploded view of a controller according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a power distribution system of a controller according to an embodiment of the present invention.

Fig. 5 is a schematic view of an assembly structure of a powertrain according to an embodiment of the present invention.

Fig. 6 is an exploded view of a powertrain according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an extension support of a powertrain according to an embodiment of the present invention.

Fig. 8 is a schematic circuit diagram of a controller according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a controller; 10. a box body; 101. a first cavity; 1011. an assembly surface; 102. a second cavity; 103. a first heat dissipation surface; 104. a second heat dissipation surface; 20. a power supply component; 201. bidirectional DC/DC; 2011. a power device; 202. a second PCB board; 203. a DC crossover sub; 204. a power signal plug-in; 30. an electronic control assembly; 301. a bridge arm converter; 3011. an IGBT; 302. a first PCB board; 303. a magnetic ring; 40. a heat dissipating component; 401. a heat dissipation water channel; 402. a water channel cover plate; 403. a water inlet pipe; 404. a water outlet pipe; 50. an upper cover; 501. a first mounting cover; 502. a second mounting cover; 60. a lower cover; 701. a direct current bus plug-in; 7011. a DC bus terminal; 702. a capacitor; 703. a three-phase copper bar assembly; 704. a control signal plug-in; 705. a second insurance; 706. a compressor socket; 707. a PTC socket; 708. a third insurance; 709. a battery heating socket; 801. a wire nose; 8011. a DC charging line terminal; 802. a contactor; 803. a DC charging port; 901. an AC charging socket; 902. a first insurance; 903. an AC charging port; 100. a motor; 110. a battery; 120 a battery heater; 130. a PTC; 140. a compressor; 150. a control module; 160. OBC; 170. boosting the DC;

11. an upper box body; 111. a first mounting surface; 112. mounting a foot; 1121. mounting a plate; 1122. a first mounting hole; 1123. reinforcing ribs; 113. a second mounting surface; 12. a lower box body; 2. a power assembly; 21. a motor; 22. a transmission; 23. a support table; 24. a second fixing hole; 3. a rotating shaft; 4. a support body; 41. a support surface; 42. a first fixing hole; 43. a bump; 44. an installation part; 5. and a bearing.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a controller 1, including a box 10, a power module 20, an electronic control module 30, and a heat dissipation module 40, where the box 10 is provided with a first cavity 101 and a second cavity 102, the electronic control module 30 is installed in the first cavity 101, the power module 20 is installed in the second cavity 102, the heat dissipation module 40 is disposed in the box 10 and between the first cavity 101 and the second cavity 102, and the heat dissipation module 40 is configured to dissipate heat of the power module 20 and the electronic control module 30. That is, the case 10 of the controller 1 is divided into a first chamber 101 and a second chamber 102 by the heat sink 40, and the electronic control component 30 is mounted in the first chamber 101 above the heat sink 40, and the power module 20 is mounted in the second chamber 102 below the heat sink 40. In the entire controller 1, the power supply module 20 and the electronic control module 30 are stacked in one case 10, and heat is radiated by the heat radiation module 40 disposed in the partition between the power supply module 20 and the electronic control module 30. The controller 1 of the present invention integrates the electric control module 30, the power module 20, and the heat dissipation module 40 in one case 10, and the electric control module 30 and the power module 20 can share the heat dissipation module 40, and the controller 1 has a simple structure, and has more integrated functions (at least the electric control module 30, the power module 20, and the heat dissipation module 40 are integrated) in the case 10 compared to a separated arrangement, so that the overall occupied space, weight, and cost of the controller 1 are reduced, and the electric vehicle is lighter.

In one embodiment, as shown in fig. 1 and 2, the heat sink assembly 40 includes a heat sink channel 401 passing through the tank 10 (preferably passing through opposite sides of the tank 10); the two opposite sides of the heat dissipation water channel 401 are respectively provided with a first heat dissipation surface 103 and a second heat dissipation surface 104, the electronic control assembly 30 is arranged on the first heat dissipation surface 103, and the power supply assembly 20 is arranged on the second heat dissipation surface 104. The case 10 of the controller 1 is divided into a first cavity 101 and a second cavity 102 by the heat dissipation water channel 401, the electric control assembly 30 is assembled in the first cavity 101 at the upper side of the heat dissipation water channel 401 (the electric control assembly 30 is arranged on the first heat dissipation surface 103, and the heat dissipation water channel 401 dissipates heat to the electric control assembly 30 through the first heat dissipation surface 103), the power module 20 is assembled in the second cavity 102 at the lower side of the heat dissipation water channel 401 (the power module 20 is arranged on the second heat dissipation surface 104, and the heat dissipation water channel 401 dissipates heat to the power module 20 through the second heat dissipation surface 104), the power module 20 and the electric control assembly 30 share the heat dissipation water channel 401 to dissipate heat, so that more integrated functions and more compact structure are provided in the controller 1, and the shared heat dissipation water channel 401 makes the controller 1 not need to set up a heat dissipation mechanism for each of the electric control assembly 30 and the power module 20, and thus is less expensive to manufacture.

In one embodiment, as shown in fig. 1 to 3, a mounting surface 1011 is disposed on the first heat dissipating surface 103, the mounting surface 1011 is located on a side of the heat dissipating water channel 401 away from the power module 20, and the electronic control module 30 is mounted on the mounting surface 1011. That is, the assembly surface 1011 is disposed above the heat dissipation water channel 401, and the assembly surface 1011 is disposed on the first heat dissipation surface 103 for mounting the electronic control component 30.

In an embodiment, as shown in fig. 3, the electronic control assembly 30 includes a bridge arm converter 301 and a first PCB 302 for receiving a control command and outputting a control signal to execute the control command, wherein an IGBT (Insulated Gate Bipolar Transistor) 3011 of the bridge arm converter 301 is fixed on the first PCB 302, and the first PCB 302 is mounted on the mounting surface 1011. Understandably, the electronic control assembly 30 further includes a magnetic ring 303 for reducing electromagnetic interference conduction and radiation interference, and the magnetic ring 303 may also be installed on the assembling surface 1011. Understandably, the mounting surface 1011 is disposed on a side of the heat dissipation water channel 401 away from the power module 20, and therefore, the first PCB board 302 and the IGBT3011 are mounted on the mounting surface 1011, and heat can be dissipated through the heat dissipation water channel 401.

In an embodiment, as shown in fig. 2 and 3, the heat dissipating assembly 40 further includes a water channel cover 402 disposed on the second heat dissipating surface 104, the water channel cover 402 is fixedly connected to the box body 10 (as shown in fig. 2, the box body 10 is provided with a mounting opening communicating with the second heat dissipating surface 104, the water channel cover 402 is fixed on the mounting opening and attached to the second heat dissipating surface 104), and the power module 20 is mounted on the water channel cover 402. That is, a waterway cover plate 402 is further disposed below the heat dissipation waterway 401, and the waterway cover plate 402 is hermetically connected to the bottom surface of the second cavity 102 (the second heat dissipation surface 104 is located on the bottom surface of the second cavity 102), so that the heat dissipation waterway 401 is isolated from the second cavity 102, and the coolant in the heat dissipation waterway 401 does not enter the second cavity 102. Understandably, the heat dissipation water channel 401 includes an inlet pipe 403 and an outlet pipe 404; the cooling liquid flows into the water inlet pipe 403 and flows out of the water outlet pipe 404, so that the cooling liquid in the heat dissipation water channel 401 can flow circularly, and further, heat generated by all components (such as the IGBT3011 and the heat generating component of the power module 20) installed on both sides of the heat dissipation water channel 401 is taken away.

In one embodiment, the waterway cover plate 402 is fixedly connected to the tank body 10 by friction welding, so that the connection between the waterway cover plate 402 and the tank body 10 is more secure and reliable.

In one embodiment, as shown in fig. 2 and 3, the power module 20 includes an OBC160 and a bidirectional DC/DC201, a power device 2011 of the OBC160 and the bidirectional DC/DC201 is mounted on the second PCB 202, and the power device 2011 may be a Metal Oxide Semiconductor (MOS) transistor; the second PCB 202 is fixedly connected to the tank 10 and/or the waterway cover plate 402, and the second PCB 202 is attached to the waterway cover plate 402. The power module 20 is installed on a side of the heat dissipation water channel 401 away from the electronic control components 30, for example, as shown in fig. 2, the electronic control components 30 are located above the heat dissipation water channel 401, the power module 20 is located below the heat dissipation water channel 401, and the power module 20 includes a second PCB 202 for heat dissipation and fixed support; the power device 201, which is the most important heat generating component of the power module 20, is mounted on the second PCB 202, so that the heat of the power device 201 passes through the second PCB 202 and the water channel cover 402, and is cooled by the cooling liquid flowing through the heat dissipating water channel 401, and then the cooling liquid flows out through the water outlet pipe 404 on the box 10. Further, the power supply assembly 20 further includes a DC adapter 203 for DC power taking of the electric vehicle and a power signal plug 204 for transmitting a power signal; the DC adapter 203 and the power signal plug 204 are fixed to the box 10.

Understandably, referring to fig. 8, controller 1 includes control module 150, bridge arm converter 301, bidirectional DC/DC201, OBC (On board charger) 160 and boost DC 170; and control module 150 is in communication connection with bridge arm converter 301, bidirectional DC/DC201, OBC160, and boost DC 170, so as to control each module in communication connection therewith to execute a control command through control module 150. In this embodiment, the electric control assembly 30 in the controller 1 includes the arm converter 301 shown in fig. 8, and the arm converter 301 is constituted by three groups of arms and 6 IGBTs 3011 shown in fig. 8. In this embodiment, the power supply component 20 in the controller 1 includes an OBC160 and a bidirectional DC/DC201, and the OBC160 and the bidirectional DC/DC201 include several power devices 2011.

In an embodiment, as shown in fig. 1 to 3, the controller 1 further includes an upper cover 50 and a lower cover 60, wherein an edge of the upper cover 50 is hermetically connected to an opening edge of the first cavity 101, and an edge of the lower cover 60 is hermetically connected to an opening edge of the second cavity 102. That is, after the electric control component is mounted in the first chamber 101, the first chamber 101 is sealed by the upper cover 50, and after the power module 20 is mounted in the second chamber 102, the second chamber is sealed by the lower cover 60.

In an embodiment, as shown in fig. 3 and 4, the controller 1 further includes a power supply module 70, where the power supply module 70 includes a dc bus plug 701, a capacitor 702, and a three-phase copper bar assembly 703 electrically connected to the electric machine 100; the battery 110 is electrically connected with the capacitor 702 through the dc bus plug 701, and the capacitor 702 is electrically connected with the three-phase copper bar assembly 703 through the first PCB 302. Further, the power supply module 70 further includes a control signal plug-in 704, and the control signal plug-in 704 is connected with the first PCB board 302. In the present invention, the IGBT3011 and the capacitor 702 are soldered on the first PCB 302 and then mounted on the mounting surface 1011. The working process of the power supply module is as follows, after the current of the battery 110 flows through the direct current bus plug-in 701, passes through the capacitor 702 and the first PCB 302, and is output to the motor 100 through the three-phase copper bar assembly 703 for power supply; meanwhile, the control signal may also be output through the control signal plug 704 connected to the first PCB board 302. Further, the dc bus bar insert 701 includes a dc bus bar terminal 7011; the upper cover 50 is also provided with a first mounting cover 501, and the dc bus bar terminal 7011 is fixed below the first mounting cover 501 shown in fig. 3.

In an embodiment, the controller further comprises a power distribution assembly installed in the first cavity 101 or/and the second cavity 102. The power distribution components include, but are not limited to, one or more of the following dc charging modules 80, ac charging modules 90, and the like. Understandably, the power distribution assembly can be installed in the first cavity 102 (as shown in fig. 2 and 3), or can be installed in the second cavity 103, or even installed in both the first cavity 101 and the second cavity 102, as long as the arrangement is reasonable, so that the structure of each component in the controller box is more compact, and further, the overall occupied space, weight and cost are reduced.

In one embodiment, as shown in fig. 3 and 4, the power distribution assembly includes a dc charging module 80, the dc charging module 80 includes a wire nose 801 and a contactor 802, a dc power source is electrically connected to the contactor 802 through the wire nose 801, and the contactor 802 is electrically connected to the dc bus bar insert 701. Understandably, the dc charging module further includes a dc charging port 803 connected to the wire nose 801; when the dc power source charges the battery 110, the current of the dc power source passes through the dc charging port 803, then sequentially passes through the wire nose 801 and the contactor 802, and finally flows to the battery 110 after passing through the dc bus plug 701, thereby completing the dc charging process of the battery. Further, the wire nose 801 includes a dc charging wire terminal 8011; the upper cover 50 is further provided with a second mounting cover 502 for mounting a dc charging wire terminal 8011.

In one embodiment, as shown in fig. 3 and 4, the power distribution assembly includes an ac charging module 90, the ac charging module 90 includes an ac charging socket 901 and a first fuse 902, an ac power source is electrically connected to the first fuse 902 through the ac charging socket 901, and the first fuse 902 is electrically connected to the dc bus bar insert 701. Understandably, the ac charging module further includes an ac charging port 903 connected to the ac charging receptacle 901; when the battery 110 is charged by the ac power supply, the current of the ac power supply flows through the ac charging port 903, then flows through the ac charging socket 901 and the first fuse 902, and finally flows to the battery 100 through the dc bus plug 701.

In one embodiment, as shown in fig. 4, the power distribution assembly includes a second fuse 705, a compressor socket 706 and a PTC (Positive Temperature Coefficient) socket 707, and both the compressor socket 706 and the PTC socket 707 are electrically connected to the dc bus bar insert 701 through the second fuse 705; that is, in this embodiment, after passing through the dc bus bar insert 701, the current of the battery 110 is output to the compressor socket 706 and the PTC socket 707 through the second fuse 705, respectively, and the compressor socket 706 is connected to the compressor 140 for supplying power to the compressor 140; the PTC socket 707 is connected to the PTC130 for supplying power to the PTC 130.

In one embodiment, the power distribution assembly includes a third fuse 708 and a battery heating socket 709, wherein the battery heating socket 709 is electrically connected to the dc bus plug 701 through the third fuse 708. That is, the battery heating socket 709 is connected to the battery heater 120, in this embodiment, after the current of the battery 110 flows through the dc bus bar insert 701, the current passes through the third fuse 708 and then is output to the battery heating socket 709, and then the battery heater 120 is powered through the battery heating socket 709.

As shown in fig. 4, fig. 4 is a schematic structural diagram of a power distribution system of a controller according to an embodiment of the present invention, the power distribution system (including the power supply module 70 and the power distribution components, etc.) of the controller 1 may also be integrated in the box 10 of the controller 1, so as to reduce the number of dc bus plugs 701, etc. used (each module or/and component in the power distribution system may share the same dc bus and the same dc bus plug 701, etc.), and further achieve reduction of cost and occupied space of the controller 1. Meanwhile, the power distribution system may be installed in the upper chamber 101 or/and the lower chamber 102 of the cabinet 10 and sealed by the upper cover 50 and the lower cover 60.

As shown in fig. 5 to 6, an embodiment of the present invention provides a power assembly, including a controller 1, a power assembly 2, and a support body 4; the power assembly 2 comprises a rotating shaft 3, and the supporting body 4 is sleeved on the rotating shaft 3; an accommodating space is formed between the power assembly 2 and the supporting body 4; the controller 1 is installed on the supporting body 4 and the power assembly 2, and at least a part of the controller 1 is located in the accommodating space. Understandably, the length of the rotating shaft 3 can be set according to the size of the controller 1 and the requirement of the operation strength, and the like, that is, when the controller 1 is large, the length of the rotating shaft 3 can be properly increased while the requirement of the operation strength is met, so as to better utilize the accommodating space. According to the power assembly of the embodiment of the invention, the controller 1 is arranged on the supporting body 4 and the power assembly 2, and at least one part of the controller 1 is placed in the accommodating space, so that the overall accommodating volume of the controller 1 can be larger, and meanwhile, the space above the rotating shaft 3 is effectively utilized, and the volume occupied by the controller 1 in the electric automobile is not increased while the overall accommodating volume of the controller 1 is increased. The invention has simple structure, ensures that the controller 1 has larger accommodation volume while being stably supported and installed, further ensures that the controller 1 has more integrated functions and lower cost, saves the space and weight of the whole electric automobile and ensures that the electric automobile is lighter.

In one embodiment, the power assembly includes a motor 21 and a transmission 22, and the motor 21 and the transmission 22 are coupled and integrated in a housing. Understandably, the housing may be used to support and protect the motor 21 and the reducer 22 installed in the housing, and the controller 1 may be partially installed on the housing, in which case, the housing may also be used to support the controller 1. In an embodiment, the power assembly 2 further includes a bearing 5 installed in the supporting body 4, and the supporting body 4 is sleeved on the rotating shaft 3 through the bearing 5. Preferably, as shown in fig. 6 to 7, the support body 4 is provided with a bearing 5 mounting portion 44 adapted to the outer ring of the bearing 5, and the bearing 5 is mounted in the mounting portion 44. That is, the rotating shaft 3 is mounted in the mounting portion 44 of the supporting body 4 through the bearing 5 sleeved at one end thereof, so that the rotating shaft 3 can be axially rotated while being connected to the supporting body 4.

In one embodiment, as shown in fig. 5 to 6, the power assembly 2 includes a motor 21 and a transmission 22; the motor 21 is connected to the transmission 22, and the supporting body 4 is disposed at one end of the motor 21 far away from the transmission 22. In the present embodiment, the supporting body 4 is disposed on the motor 21, the motor 21 is disposed between the supporting body 4 and the transmission 22, and the rotating shaft 3 is disposed between the transmission 22 and the supporting body 4, so that the rotating shaft, the motor 21, the transmission 22 and the supporting body 4 are connected as a whole; the controller 1 can be stably supported.

In an embodiment, as shown in fig. 5 to 6, the rotating shaft 3 includes a transmission rotating shaft (i.e., in this embodiment, the rotating shaft 3 is a part of a transmission), and the accommodating space is enclosed by the motor 21, the transmission 22, the rotating shaft 3 and the supporting body 4. Understandably, the rotating shaft 3 is used as a part of the transmission 22 and is connected between the supporting bodies 4, so that an accommodating space capable of accommodating at least a part of the controller 1 is enclosed among the rotating shaft 3, the motor 21, the transmission 22 and the supporting bodies 4, so that the accommodating space above the rotating shaft 3 is effectively utilized, and the total accommodating volume of the controller 1 is increased without increasing the volume occupied by the controller 1 in the electric automobile.

In one embodiment, as shown in fig. 5 and 6, the controller 1 includes an upper case 11 and a lower case 12 protruding from a bottom end of the upper case 11 (understandably, the upper case 11 and the lower case 12 may constitute the case 10 shown in fig. 1); the upper case 11 is mounted on the supporting body 4 and the power assembly 2, and at least a portion of the lower case 12 is located in the accommodating space. In this embodiment, the controller 1 extends downward to form a lower case 12 protruding from the upper case 11, so that the overall accommodating volume of the controller 1 is larger, the upper case 11 of the controller 1 is mounted on the supporting body 4 and the power assembly 2, and at least a portion of the lower case 12 is placed in the accommodating space above the rotating shaft 3, so that the space above the rotating shaft 3 and below the upper case 11 is effectively utilized, the overall accommodating volume of the controller 1 is increased, the volume occupied by the controller 1 in the electric vehicle is not increased, the accommodating volume of the controller 1 is larger while the controller 1 is stably supported and mounted, further, more integrated functions and lower cost are achieved in the controller 1, the space and weight of the whole electric vehicle are saved, and the electric vehicle is lighter and more handy.

As can be understood, referring to fig. 1, 2 and 6, the first cavity 101 is located in the upper case 11, and the second cavity 102 is located in the lower case 12; the power supply assembly 20 is placed in the second cavity 102, and the electronic control assembly 30 is placed in the first cavity 101; in the embodiment shown in fig. 6, the first cavity 102 has a larger volume than the second cavity 101, and at this time, the power distribution assembly can be placed in the first cavity 101 (while the structure is compact, because the power distribution assembly is additionally placed in the first cavity of the upper box 11, the volume of the upper box 11 is larger than that of the lower box 12, at this time, a step surface can be formed between the upper box 11 and the lower box 12, and the upper box 11 is mounted on the support body 4 and the power assembly 2 through the step surface), and the lower box part with a smaller volume is disposed in the accommodating space, so that the accommodating space is utilized to the maximum, the overall height of the power assembly is reduced, the occupied volume is reduced, and the whole vehicle layout is facilitated.

In one embodiment, as shown in fig. 6 to 7, a supporting surface 41 is provided at the top end of the supporting body 4, and the upper case 11 is mounted on the supporting surface 41 and the power module 2. That is, the supporting surface 41 can make the contact surface between the upper case 11 and the supporting body 4 larger and the connection more stable.

In an embodiment, as shown in fig. 5 to 6, a first mounting surface 111 and a mounting leg 112 are provided on the upper case 11; the support body 4 is also provided with a first fixing hole 42; the first mounting surface 111 abuts against the support surface 41, and the mounting leg 112 is screwed to the first fixing hole 42. The arrangement of the mounting feet 112 and the first fixing holes 42 enables the upper box body 11 to be further fixed on the supporting body 4 without shaking or moving, so that the stabilizing effect of the controller 1 is better; meanwhile, the installation pins 112 are used for fixing, so that the assembly and disassembly are convenient, and the interference is not easy to occur in the assembly and disassembly process. Preferably, as shown in fig. 6 to 7, the mounting plate 1121 is further provided with a reinforcing rib 1123 for reinforcing the connection strength of the mounting plate 1121, and the reinforcing rib 1123 also can make the connection between the mounting leg 112 and the first fixing hole 42 more reliable.

In one embodiment, as shown in fig. 5 to 6, the mounting leg 112 includes a mounting plate 1121 extending outward from an edge of the first mounting surface 111, and a first mounting hole 1122 provided on the mounting plate 1121; a bump 43 is arranged on the supporting body 4 at a position corresponding to the mounting plate 1121, and the first fixing hole 42 is arranged on the bump 43 at a position corresponding to the first mounting hole 1122; the mounting leg 112 is screwed to the first fixing hole 42 through the first mounting hole 1122. In the embodiment, the first mounting holes 1122 are provided on the protrusions 43 extending outward from the edge of the first mounting surface 111, so that the overall size of the supporting body 4 can be relatively small, the connection stability can be ensured, the cost can be saved, and the weight of the power assembly can be reduced.

In an embodiment, as shown in fig. 5 to 7, a second mounting surface 113 and a second mounting hole (not shown) are further provided on the upper case 11, a support table 23 is provided on the power module 2 (preferably, on the transmission 22), a second fixing hole 24 is provided on the support table 23, the second mounting surface 113 abuts against the support table 23, and the second mounting hole is screwed to the second fixing hole 24. In this embodiment, the support table 23 and the second mounting surface 113 are arranged so that the contact surface between the upper case 11 and the power assembly 2 is larger and the connection is more stable; meanwhile, the second mounting hole is in screw connection with the second fixing hole 24, so that the upper box body 11 is further fixed on the support body 4, shaking or moving cannot occur, and the stabilizing effect of the controller 1 is better.

On the other hand, the embodiment of the invention also provides an electric vehicle, which comprises the controller 1. Understandably, the controller 1 may be installed in an electric vehicle through the above-described powertrain.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A controller is characterized by comprising a box body, a power supply assembly, an electric control assembly and a heat dissipation assembly, wherein the box body is provided with a first cavity and a second cavity, the electric control assembly is installed in the first cavity, the power supply assembly is installed in the second cavity, the heat dissipation assembly is arranged in the box body and located between the first cavity and the second cavity, and the heat dissipation assembly is used for simultaneously dissipating heat of the power supply assembly and the electric control assembly.

2. The controller of claim 1, wherein the heat sink assembly includes a heat sink channel through the tank; the upper and lower opposite sides of the heat dissipation water channel are respectively provided with a first heat dissipation surface and a second heat dissipation surface, the electric control assembly is arranged on the first heat dissipation surface, and the power supply assembly is arranged on the second heat dissipation surface.

3. The controller of claim 2, wherein the first heat sink surface has a mounting surface located on a side of the heat sink channel remote from the power supply assembly, the electrical control assembly being mounted on the mounting surface.

4. The controller of claim 3, wherein the electrical control assembly comprises a bridge arm inverter and a first PCB, wherein the IGBT of the bridge arm inverter is fixed on the first PCB, and the first PCB is mounted on the mounting surface.

5. The controller of claim 2, wherein the heat sink assembly further comprises a waterway cover plate disposed on the second heat sink surface, the waterway cover plate being fixedly coupled to the housing, the power module being mounted on the waterway cover plate.

6. The controller of claim 5, wherein the waterway cover plate is fixedly coupled to the housing by friction welding.

7. The controller of claim 5, wherein the power module comprises an OBC and a bi-directional DC/DC, the power devices of the OBC and the bi-directional DC/DC are mounted on a second PCB, the second PCB is fixedly connected with the tank and/or the waterway cover plate, and the second PCB is attached to the waterway cover plate.

8. The controller of claim 1, further comprising an upper cover and a lower cover, wherein an edge of the upper cover is hermetically connected with an opening edge of the first cavity, and an edge of the lower cover is hermetically connected with an opening edge of the second cavity.

9. The controller of claim 1, further comprising a power module comprising a dc bus plug-in, a capacitor, and a three-phase copper bar assembly electrically connected to a motor; the battery passes through direct current bus plug-in components with the electric capacity electricity is connected, the electric capacity pass through first PCB board with the three-phase copper bar subassembly electricity is connected.

10. The controller of claim 9, wherein the power module further comprises a control signal plug, the control signal plug being connected to the first PCB board.

11. The controller of claim 9, further comprising a power distribution assembly mounted within the first cavity or/and the second cavity.

12. The controller of claim 11, wherein the power distribution assembly comprises a dc charging module including a wire nose through which a dc power source is electrically connected to the contactor and a contactor electrically connected to the dc bus plug-in.

13. The controller of claim 11, wherein the power distribution assembly comprises an ac charging module including an ac charging socket and a first fuse, an ac power source electrically connected to the first fuse through the ac charging socket, the first fuse electrically connected to the dc bus plug.

14. The controller of claim 11, wherein the power distribution assembly comprises a second fuse, a compressor socket, and a PTC socket, each of the compressor socket and the PTC socket being electrically connected to the dc bus insert through the second fuse; or/and

the power distribution assembly further comprises a third fuse and a battery heating socket, and the battery heating socket is electrically connected with the direct current bus plug-in unit through the third fuse.

15. A power assembly, comprising a power assembly, a support body and the controller of any one of claims 1 to 14, wherein the power assembly comprises a rotating shaft, and the support body is sleeved on the rotating shaft; an accommodating space is formed between the power assembly and the support body; the controller is installed on the supporting body and the power assembly, and at least one part of the controller is located in the accommodating space.

16. A powertrain according to claim 15, characterised in that the power module comprises an electric machine and a transmission, which are coupled and integrated in one housing.

17. The locomotion assembly of claim 15, further comprising a bearing mounted in the support body, wherein the support body is sleeved on the rotating shaft through the bearing.

18. The power assembly according to claim 15, wherein the controller comprises an upper box body and a lower box body arranged at the bottom end of the upper box body in a protruding mode; the upper box body is arranged on the supporting body and the power assembly, and at least one part of the lower box body is positioned in the accommodating space.

19. The locomotion assembly of claim 18, wherein the top end of the support body is provided with a support surface, and the upper box is mounted on the support surface and the locomotion assembly.

20. The powertrain of claim 19, wherein the upper housing defines a first mounting surface and mounting feet; the support body is also provided with a first fixing hole; the first mounting surface is abutted to the supporting surface, and the mounting foot is in screw connection with the first fixing hole.

21. An electric vehicle comprising the controller of any one of claims 1 to 14.