Motor controller and vehicle

Abstract

The embodiment of the utility model relates to the technical field of automobile motor control, and particularly discloses a motor controller and a vehicle, the motor controller comprises a shell provided with a containing cavity, a partition plate is arranged in the shell, and the partition plate divides the containing cavity into a first space and a second space; a plurality of cooling fins are arranged on the side, close to the second space, of the partition plate, and the cooling fins are arranged at intervals. The control circuit board is arranged in the containing cavity, and the control circuit board is located in the first space; at least part of the fan assembly is arranged in the containing cavity, the fan assembly comprises a fan, the fan is located in the second space, and an air outlet of the fan faces the cooling fins. Through the mode, the influence on the insulation performance of the circuit on the control circuit board can be reduced, and the service life of the motor controller is prolonged.

Description

Technical Field

[0001] This application relates to the field of automotive motor control technology, and in particular to a motor controller and a vehicle. Background Technology

[0002] With industry development, new energy vehicles are accounting for an increasing proportion of personal transportation vehicles. The core power component of new energy vehicles is called the three-electric system, which includes the drive motor and the motor controller used to control the drive motor and other electrical devices. In related technologies, fans are typically used to cool the control circuit board in the motor controller. The fan is usually placed on one side of the control circuit board, and its operation drives airflow directly onto the control circuit board for cooling.

[0003] In the process of developing this application, the inventors discovered that: because the fan and the control circuit board are in the same space, the fan stirs up dust and impurities in the air during operation. These particles are easily deposited on the control circuit board, affecting the insulation performance of the circuits on the control circuit board, and in severe cases, causing short circuits. Utility Model Content

[0004] In view of the above problems, embodiments of this application provide a motor controller and a vehicle that overcome or at least partially solve the above problems.

[0005] According to one aspect of this application, a motor controller is provided, including a housing with a receiving cavity, a partition plate disposed within the housing, the partition plate dividing the receiving cavity into a first space and a second space, a plurality of heat sinks disposed on the side of the partition plate near the second space, the plurality of heat sinks being spaced apart; a control circuit board disposed within the receiving cavity, the control circuit board being located within the first space; and a fan assembly, at least partially disposed within the receiving cavity, the fan assembly including a fan, the fan being located within the second space, the air outlet of the fan facing the heat sinks.

[0006] In one optional embodiment, a mounting port is provided on one side of the housing, the mounting port communicating with the second space; a heat dissipation hole is provided on the other opposite side of the housing, the heat dissipation hole communicating with the second space, and the heat sink is located between the mounting port and the heat dissipation hole; the fan assembly includes a mounting bracket, the mounting bracket is mounted on the mounting port, the mounting bracket is detachably connected to the housing, the fan is detachably connected to the mounting bracket, the mounting bracket is provided with an air inlet hole communicating with the second space, and the heat sink is located between the air inlet hole and the heat dissipation hole.

[0007] In one alternative embodiment, the plurality of heat sinks are spaced apart to form a plurality of heat dissipation channels, the air inlets of the heat dissipation channels facing the fan, and the air outlets of the heat dissipation channels facing the heat dissipation holes.

[0008] In one alternative embodiment, the housing includes a cover plate, a bottom plate, and a plurality of side plates connected in sequence. The cover plate covers one side of the plurality of side plates, and the bottom plate covers the other side of the plurality of side plates. The cover plate is detachably connected to the plurality of side plates, and the bottom plate is detachably connected to the plurality of side plates. A first space is located between the cover plate and the partition plate, and a second space is located between the partition plate and the bottom plate.

[0009] In one alternative embodiment, the base plate extends toward the heat sink with a guide protrusion that abuts against the side of the heat sink away from the partition plate. The guide protrusion includes a first inclined portion, a horizontal portion, and a second inclined portion. The first inclined portion and the second inclined portion are respectively connected to the two ends of the horizontal portion. The inclined surface of the first inclined portion faces the fan, and the inclined surface of the second inclined portion faces the heat dissipation hole.

[0010] In one alternative embodiment, the plurality of side plates are provided with a mounting groove on the side near the cover plate, and a sealing ring is provided in the mounting groove. The side of the sealing ring opposite to the plurality of side plates abuts against the cover plate, and the sealing ring is located between the cover plate and the side plates.

[0011] In one alternative embodiment, the housing is provided with a first connection terminal and a second connection terminal, the first connection terminal and the second connection terminal being spaced apart on the outer surface of the housing, and both the first connection terminal and the second connection terminal being electrically connected to the control circuit board.

[0012] In one alternative embodiment, a heat-conducting element is provided on the side of the control circuit board near the partition plate, and the side of the heat-conducting element opposite to the control circuit board abuts against the partition plate, with the heat-conducting element located between the control circuit board and the partition plate.

[0013] In one alternative embodiment, the control circuit board is provided with one or more of the following: an auxiliary source circuit, a DSP circuit, a digital input circuit, a digital output circuit, a current sampling circuit, an overcurrent comparison circuit, a reference circuit, and an encoder circuit.

[0014] According to another aspect of this application, a vehicle is provided, including a motor controller as described above.

[0015] The beneficial effects of this application embodiment are as follows: Unlike the prior art, this application embodiment includes a housing, a control circuit board, and a fan assembly. The housing has a receiving cavity, and a partition plate within the housing divides the receiving cavity into a first space and a second space. Multiple heat sinks are arranged on the side of the partition plate near the second space, spaced apart. The control circuit board is located within the receiving cavity, specifically in the first space. The fan assembly, at least partially located within the receiving cavity, includes a fan located in the second space, with its air outlet facing the heat sinks. Heat generated by the control circuit board can be transferred to the heat sinks through the partition plate. Then, the fan drives external airflow towards the heat sinks, achieving heat dissipation. Since the control circuit board is located in the first space and the fan in the second space, even if the fan stirs up dust and impurities in the air during operation, because the control circuit board and fan are located in different spaces, dust and impurities are less likely to accumulate on the control circuit board. This reduces the impact on the insulation performance of the circuits on the control circuit board and improves the service life of the motor controller. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a partial structural schematic diagram of the motor controller according to an embodiment of this application;

[0018] Figure 2 This is an exploded view of part of the structure of the motor controller according to an embodiment of this application;

[0019] Figure 3 This is a partial sectional view of the structure of the motor controller according to an embodiment of this application;

[0020] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is an exploded view of a portion of the structure of the motor controller in an embodiment of this application. Detailed Implementation

[0022] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0024] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see Figures 1-3 The motor controller 1000 includes a housing 10, a control circuit board 20, and a fan assembly 30. The control circuit board 20 is located inside the housing 10, and the fan assembly 30 is at least partially disposed inside the housing 10, serving to dissipate heat from the control circuit board 20. The housing 10, the control circuit board 20, and the fan assembly 30 are described in detail below.

[0026] For the aforementioned housing 10, as Figure 2 and Figure 3 As shown, the housing 10 is provided with a receiving cavity 10a, which can be used to house control devices, power electronic devices, power modules, etc. Specifically, the housing 10 includes a cover plate 101, a bottom plate 102, and a plurality of side plates 103 connected in sequence. The cover plate 101 covers one side of the plurality of side plates 103, and the bottom plate 102 covers the other side of the plurality of side plates 103. The cover plate 101 and the plurality of side plates 103 are detachably connected, and the bottom plate 102 and the plurality of side plates 103 are detachably connected. The cover plate 101, the bottom plate 102, and the plurality of side plates 103 together form the aforementioned receiving cavity 10a. It is understood that the detachable connection between the cover plate 101 and the plurality of side plates 103, and the detachable connection between the bottom plate 102 and the plurality of side plates 103, includes, but is not limited to, screwing, riveting, snap-fitting, etc.

[0027] In some embodiments, the housing 10 further includes a partition plate 104 connected to the side plate 103. The partition plate 104 divides the receiving cavity 10a into a first space 10aa and a second space 10ab. The first space 10aa is located between the cover plate 101 and the partition plate 104, and the second space 10ab is located between the partition plate 104 and the bottom plate 102. In some embodiments, the control circuit board 20 is located in the first space 10aa, and the fan 301 in the fan assembly 30 is located in the second space 10ab. Even if the fan 301 agitates dust and impurities in the air during operation, since the control circuit board 20 and the fan 301 are located in different spaces, dust and impurities are less likely to accumulate on the control circuit board 20. This reduces the impact on the insulation performance of the circuits on the control circuit board 20 and improves the service life of the motor controller 1000.

[0028] In some embodiments, a plurality of heat sinks 1041 are provided on the side of the partition plate 104 near the second space 10ab. The heat sinks 1041 are spaced apart, and the heat generated on the control circuit board 20 can be transferred to the heat sinks 1041. The heat sinks 1041 can cooperate with the fan 301 located in the second space 10ab to dissipate heat from the control circuit board 20. The heat sinks 1041 can increase the contact area with air, thereby improving heat dissipation efficiency. In some embodiments, the plurality of heat sinks 1041 form a plurality of heat dissipation channels 1041a at intervals. The fan 301 drives external airflow to circulate within the plurality of heat dissipation channels 1041a to remove the heat transferred from the control circuit board 20 to the heat sinks 1041.

[0029] In some embodiments, a mounting port 10b is provided on one side of the housing 10, which communicates with the second space 10ab. A heat dissipation hole 10c is provided on the opposite side of the housing 10, which also communicates with the second space 10ab. A heat sink 1041 is located between the mounting port 10b and the heat dissipation hole 10c. The mounting port 10b is used for mounting a fan assembly 30. The fan assembly 30 drives external airflow towards the heat sink 1041 and blows the heat on the heat sink 1041 to the heat dissipation hole 10c to be discharged from the second space 10ab. In some embodiments, the heat dissipation hole 10c faces the air outlet of the heat dissipation channel 1041a, and the airflow from the heat dissipation channel 1041a can flow out through the heat dissipation hole 10c.

[0030] In some embodiments, please refer to the following: Figure 4Multiple side plates 103 are provided with mounting grooves 1033 on the side near the cover plate 101. A sealing ring 1033a is provided in the mounting groove 1033. The side of the sealing ring 1033a away from the multiple side plates 103 abuts against the cover plate 101. The sealing ring 1033a is located between the cover plate 101 and the side plates 103. The sealing ring 1033a can improve the sealing between the cover plate 101 and the side plates 103 to reduce the entry of external dust and impurities into the receiving cavity 10a.

[0031] In some embodiments, the base plate 102 extends toward the heat sink 1041 with a guide protrusion 1021. The guide protrusion 1021 abuts against the side of the heat sink 1041 away from the partition plate 104. The guide protrusion 1021 includes a first inclined portion 1021a, a horizontal portion 1021b, and a second inclined portion 1021c. The first inclined portion 1021a and the second inclined portion 1021c are respectively connected to the two ends of the horizontal portion 1021b. The inclined surface of the first inclined portion 1021a is disposed toward the fan 301 on the fan assembly 30, and the inclined surface of the second inclined portion 1021c is disposed toward the heat dissipation hole 10c. The guide protrusion 1021 can guide the airflow blown by the fan 301 to the heat sink 1041 to increase the contact area between the airflow and the heat sink 1041 and improve the heat dissipation efficiency. In this process, part of the airflow blown by the fan 301 is directly blown toward the heat sink 1041, and part of the airflow is guided to the heat sink 1041 through the first inclined part 1021a. After the cold airflow passes through the heat sink 1041, it forms a hot airflow. Then, at least part of the hot airflow is directly blown toward the heat dissipation hole 10c for discharge, and part of the hot airflow is blown toward the second inclined part 1021c. The second inclined part 1021c guides part of the hot airflow to the heat dissipation hole 10c for discharge.

[0032] In some embodiments, the housing 10 is provided with a first connection terminal 1031 and a second connection terminal 1032, which are spaced apart on the outer surface of the housing 10. Both the first connection terminal 1031 and the second connection terminal 1032 are electrically connected to the control circuit board 20, and can be plugged into by external electronic devices. In some embodiments, the first connection terminal 1031 is a power terminal, and the second connection terminal 1032 is a signal terminal.

[0033] For the aforementioned control circuit board 20 and fan assembly 30, such as Figure 2 and Figure 3As shown, the control circuit board 20 is disposed within the receiving cavity 10a, and the control circuit board 20 is located within the first space 10aa. The fan assembly 30 is at least partially disposed within the receiving cavity 10a, and the fan assembly 30 includes a fan 301, which is located within the second space 10ab. The air outlet of the fan 301 faces the heat sink 1041. Since the control circuit board 20 is located within the first space 10aa and the fan 301 is located within the second space 10ab, even if the fan 301 agitates dust and impurities in the air during operation, because the control circuit board 20 and the fan 301 are located in different spaces, dust and impurities are less likely to accumulate on the control circuit board 20. This reduces the impact on the insulation performance of the circuits on the control circuit board 20 and improves the service life of the motor controller 1000. In some embodiments, the fan 301 faces the air inlet of the heat dissipation channel 1041a, and the fan 301 drives air to blow towards the air inlet of the heat dissipation channel 1041a.

[0034] In some embodiments, please refer to the following: Figure 5 The fan assembly 30 includes a mounting bracket 302, which is mounted on the mounting port 10b and detachably connected to the housing 10. The fan 301 is detachably connected to the mounting bracket 302. The mounting bracket 302 has an air inlet 302a communicating with the second space 10ab. A heat sink 1041 is located between the air inlet 302a and the heat dissipation hole 10c. The mounting bracket 302 provides mounting for the fan 301, thus fixing the fan 301 relatively within the second space 10ab of the housing 10. Outside air can enter the second space 10ab through the air inlet 302a and flow towards the heat sink 1041 under the drive of the fan 301 until it flows out from the heat dissipation hole 10c. Furthermore, the detachable connection between the mounting bracket 302 and the housing 10 facilitates the maintenance or replacement of the fan 301.

[0035] In some embodiments, the fan assembly 30 further includes a connecting screw 303, the fan 301 being detachably connected to the mounting bracket 302 via the connecting screw 303, and the connecting screw 303 being at least partially located within the second space 10ab. This arrangement reduces the direct exposure of the connecting screw 303 on the outer surface of the housing 10, thus minimizing its impact on the aesthetic appearance of the housing 10.

[0036] In some embodiments, a heat-conducting element 201 is provided on the side of the control circuit board 20 near the partition plate 104. The side of the heat-conducting element 201 away from the control circuit board 20 abuts against the partition plate 104. The heat-conducting element 201 is located between the control circuit board 20 and the partition plate 104. The heat generated by the control circuit board 20 can be guided to the partition plate 104 through the heat-conducting element 201, thereby improving the heat dissipation efficiency of the control circuit board 20. Then, the partition plate 104 transfers the heat to the heat sink 1041. After that, the fan 301 drives the airflow to blow towards the heat sink 1041. Finally, the hot airflow is discharged from the heat dissipation hole 10c. In some embodiments, an integrated module 202 is disposed on the side of the control circuit board 20 near the partition plate 104. One side of the heat-conducting component 201 abuts against the integrated module 202, and the other side of the heat-conducting component 201 abuts against the partition plate 104. The heat-conducting component 201 is located between the integrated module 202 and the partition plate 104. Since the integrated module 202 generates a high amount of heat, the heat generated by the integrated module 202 can be guided to the partition plate 104 through the heat-conducting component 201, thereby improving the heat dissipation efficiency of the integrated module 202. It is understood that the integrated module 202 includes, but is not limited to, one or more of a microcontroller unit, a digital signal processor, a signal converter, and a power module.

[0037] In some embodiments, the power section and the control section are integrated on the control circuit board 20. This integrated configuration reduces the required physical space, making the motor controller 1000 more compact. At the same time, it reduces external connections and interfaces, lowers the failure rate, and improves the reliability of the system.

[0038] In some embodiments, the control circuit board 20 is provided with one or more of the following: auxiliary source circuit, DSP (Digital Signal Processor) circuit, digital input circuit, digital output circuit, current sampling circuit, overcurrent comparison circuit, reference circuit, and encoder circuit. This configuration integrates multiple functions on the control circuit board 20, which can reduce the number of external connections and components, save space, and at the same time, the digital input and output circuit can be flexibly expanded as needed to adapt to different application requirements.

[0039] In this embodiment, a housing 10, a control circuit board 20, and a fan assembly 30 are provided. The housing 10 has a receiving cavity 10a, and a partition plate 104 is provided within the housing 10, dividing the receiving cavity 10a into a first space 10aa and a second space 10ab. Multiple heat sinks 1041 are provided on the side of the partition plate 104 near the second space 10ab, and the heat sinks 1041 are spaced apart. The control circuit board 20 is disposed within the receiving cavity 10aa and located within the first space 10aa. The fan assembly 30 is at least partially disposed within the receiving cavity 10a, and the fan assembly 30 includes a fan 301 located within the second space 10ab, with the air outlet of the fan 301 facing the heat sink 10aa. 41. The heat generated by the control circuit board 20 can be transferred to the heat sink 1041 through the partition plate 104. Then, the fan 301 drives the outside air to blow towards the heat sink 1041, thereby achieving heat dissipation. The control circuit board 20 is located in the first space 10aa, and the fan 301 is located in the second space 10ab. Even if the fan 301 stirs up dust and impurities in the air during operation, since the control circuit board 20 and the fan 301 are located in different spaces, dust and impurities are not easy to accumulate on the control circuit board 20. This reduces the impact on the insulation performance of the circuit on the control circuit board 20 and improves the service life of the motor controller 1000.

[0040] This application also provides an embodiment of a vehicle, which includes the motor controller 1000 as described above. The function and structure of the motor controller 1000 can be found in the above embodiments, and will not be repeated here.

[0041] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A motor controller, characterized in that, include: The housing has a receiving cavity, and a partition plate is provided inside the housing to divide the receiving cavity into a first space and a second space. A plurality of heat sinks are provided on the side of the partition plate near the second space, and the plurality of heat sinks are spaced apart. A control circuit board is disposed within the receiving cavity, and the control circuit board is located within the first space; A fan assembly, at least partially disposed within the receiving cavity, the fan assembly including a fan located within the second space, the fan's air outlet facing the heat sink.

2. The motor controller according to claim 1, characterized in that, One side of the housing is provided with a mounting port, which communicates with the second space; A heat dissipation hole is provided on the other opposite side of the housing, the heat dissipation hole is connected to the second space, and the heat sink is located between the mounting port and the heat dissipation hole; The fan assembly includes a mounting bracket, which is mounted on the mounting port and detachably connected to the housing. The fan is detachably connected to the mounting bracket, and the mounting bracket is provided with an air inlet hole that communicates with the second space. The heat sink is located between the air inlet hole and the heat dissipation hole.

3. The motor controller according to claim 2, characterized in that, Multiple heat sinks are spaced apart to form multiple heat dissipation channels, with the air inlets of the heat dissipation channels facing the fan and the air outlets of the heat dissipation channels facing the heat dissipation holes.

4. The motor controller according to claim 2, characterized in that, The housing includes a cover plate, a bottom plate, and a plurality of side plates connected in sequence. The cover plate covers one side of the plurality of side plates, and the bottom plate covers the other side of the plurality of side plates. The cover plate and the plurality of side plates are detachably connected, and the bottom plate and the plurality of side plates are detachably connected. The first space is located between the cover plate and the partition plate, and the second space is located between the partition plate and the bottom plate.

5. The motor controller according to claim 4, characterized in that, The base plate extends toward the heat sink and has a guide protrusion. The guide protrusion abuts against the side of the heat sink away from the partition plate. The guide protrusion includes a first inclined portion, a horizontal portion and a second inclined portion. The first inclined portion and the second inclined portion are respectively connected to the two ends of the horizontal portion. The inclined surface of the first inclined portion faces the fan and the inclined surface of the second inclined portion faces the heat dissipation hole.

6. The motor controller according to claim 4, characterized in that, The plurality of side plates are provided with mounting grooves on the side near the cover plate, and a sealing ring is provided in the mounting groove. The side of the sealing ring away from the plurality of side plates abuts against the cover plate, and the sealing ring is located between the cover plate and the side plates.

7. The motor controller according to claim 1, characterized in that, The housing is provided with a first connection terminal and a second connection terminal, which are spaced apart on the outer surface of the housing. Both the first connection terminal and the second connection terminal are electrically connected to the control circuit board.

8. The motor controller according to claim 1, characterized in that, A heat-conducting component is provided on the side of the control circuit board near the partition plate, and the side of the heat-conducting component away from the control circuit board abuts against the partition plate. The heat-conducting component is located between the control circuit board and the partition plate.

9. The motor controller according to claim 1, characterized in that, The control circuit board is equipped with one or more of the following: auxiliary source circuit, DSP circuit, digital input circuit, digital output circuit, current sampling circuit, overcurrent comparison circuit, reference circuit, and encoder circuit.

10. A vehicle, characterized in that, Includes the motor controller as described in any one of claims 1-9.

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