Motor controller and vehicle
By setting up partitions and heat dissipation columns in the waterway structure of the motor controller to form a "U"-shaped runner, the problem of IGBT module being damaged due to severe heat generation is solved, and more efficient heat dissipation effect and the effect of reducing production costs is achieved.
Patent Information
- Application Number
- CN202421181222.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
IGBT modules are prone to severe heat and damage due to high current and insufficient cooling, which affects the reliability of the motor controller.
By setting up partitions in the waterway structure, a "U"-shaped flow channel is formed, the flow path of the coolant is increased, and multiple heat dissipation columns and flow guide ribs are provided in the flow channel to improve the cooling effect.
It effectively improves the heat dissipation effect of the IGBT module, reduces production costs, and prevents the IGBT module from being damaged due to severe heat generation.
Smart Images
Figure CN222582838U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of motor controllers, and in particular to a motor controller and a vehicle. Background Art
[0002] The motor controller is a key component in electric vehicles, and the IGBT (Insulated Gate Bipolar Transistor) module is the core device of the motor controller. Due to the high integration of the IGBT module and the very large heat flux density per unit volume, it is very easy to heat up and be damaged under conditions of high current and insufficient cooling, which seriously affects the reliability of the motor controller. Therefore, it is particularly important to operate it within a reliable temperature range through a reasonable heat dissipation system.
[0003] At present, there are two traditional technical means to improve the heat dissipation of IGBT modules: one is to add heat dissipation pins on the bottom substrate of the IGBT module to improve the heat dissipation capacity of the IGBT module itself; the other is to improve the cooling effect by optimizing the water channel structure of the controller housing.
[0004] The former is suitable for high-power controllers, and its advantages are simple water channel structure and good heat dissipation effect, but its disadvantage is high cost of IGBT module. The latter is suitable for medium and low power controllers, and its advantages are simple IGBT module structure, low cost and good heat dissipation effect; its disadvantage is complex water channel structure of controller housing, which increases the complexity of die-casting mold. Utility Model Content
[0005] In view of this, the present application provides a motor controller and a vehicle, which can improve the heat dissipation effect and reduce the production cost.
[0006] Specifically, the following technical solutions are included:
[0007] In a first aspect, an embodiment of the present application provides a motor controller, the motor controller comprising a housing and an IGBT module, the housing comprising a controller housing and a water channel bottom plate, the controller housing being configured with a water channel structure, the water channel structure having an inner cavity, the IGBT module being mounted on one side of the water channel structure, and the water channel bottom plate being mounted on a side of the water channel structure away from the IGBT module;
[0008] The water channel structure is provided with a partition, and the water channel bottom plate is provided with a water inlet and a water outlet connected with the inner cavity, the water inlet and the water outlet are respectively located on both sides of the partition, and the partition divides the inner cavity into a "U"-shaped flow channel.
[0009] In an optional embodiment, the partition is connected to the side wall on one side of the water channel structure, and the partition is spaced apart from the side wall on the other side of the water channel structure, thereby separating the water channel structure into a first flow channel and a second flow channel that are interconnected, and the first flow channel and the second flow channel are both protruding with multiple heat dissipation columns.
[0010] In an optional embodiment, both ends of the heat dissipation column in the length direction are arc-shaped.
[0011] In an optional embodiment, arc-shaped protrusions are provided on both sides of the heat dissipation column in the width direction, so that the heat dissipation column has an elliptical shape.
[0012] In an optional embodiment, in the first flow channel and the second flow channel, a plurality of the heat dissipation columns are distributed in parallel and staggered manner.
[0013] In an optional embodiment, the water channel structure is further provided with a plurality of guide ribs, and the plurality of guide ribs are distributed at intervals between the first flow channel and the second flow channel.
[0014] In an optional embodiment, the guide rib extends in an arc shape.
[0015] In an optional embodiment, a spoiler block is provided on the guide rib, and the spoiler block protrudes outward relative to the side wall of the guide rib.
[0016] In an optional embodiment, the water channel structure is further provided with a mounting column, and streamlined protrusions are protruded on both radial sides of the mounting column.
[0017] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising a motor controller provided by any embodiment of the first aspect.
[0018] The beneficial effects of the technical solution provided in the embodiment of the present application include at least: by setting a partition in the water channel structure to form a "U"-shaped flow channel, the flow path of the coolant in the flow channel is increased, which not only has a simple structure and is conducive to reducing production costs, but also improves the heat dissipation effect of the IGBT module and prevents the IGBT module from being damaged due to severe heat. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 One of the structural schematic diagrams of the motor controller provided in the embodiment of the present application;
[0021] Figure 2 The second structural diagram of the motor controller provided in the embodiment of the present application;
[0022] Figure 3 A schematic structural diagram of a waterway structure provided in an embodiment of the present application.
[0023] The reference numerals in the figures represent respectively:
[0024] 1-box; 11-controller housing; 111-water channel structure; 1111-inner cavity; 1112-partition; 1113-first flow channel; 1114-second flow channel; 1115-heat dissipation column; 1115a-protrusion; 1116-flow guide rib; 1116a-spoiler block; 1117-installation column; 1117a-streamlined protrusion; 1118-top wall; 1119-side peripheral wall; 12-water channel bottom plate; 121-water outlet; 122-water inlet;
[0025] 2-IGBT module.
[0026] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.
[0029] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by those of ordinary skill in the art. Some technical terms appearing in the embodiments of the present application are explained below.
[0030] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.
[0031] The motor controller is a key component in electric vehicles, and the IGBT (Insulated Gate Bipolar Transistor) module is the core device of the motor controller. Due to the high integration of the IGBT module and the very large heat flux density per unit volume, it is very easy to heat up and be damaged under conditions of high current and insufficient cooling, which seriously affects the reliability of the motor controller. Therefore, it is particularly important to operate it within a reliable temperature range through a reasonable heat dissipation system.
[0032] At present, there are two traditional technical means to improve the heat dissipation of IGBT modules: one is to add heat dissipation pins on the bottom substrate of the IGBT module to improve the heat dissipation capacity of the IGBT module itself; the other is to improve the cooling effect by optimizing the water channel structure of the controller housing.
[0033] The former is suitable for high-power controllers, and its advantages are simple water channel structure and good heat dissipation effect, but its disadvantage is high cost of IGBT module. The latter is suitable for medium and low power controllers, and its advantages are simple IGBT module structure, low cost and good heat dissipation effect; its disadvantage is complex water channel structure of controller housing, which increases the complexity of die-casting mold.
[0034] In view of the technical problems existing in the prior art, the present application provides a motor controller, such as Figures 1 to 3 As shown, the motor controller includes a housing 1 and an IGBT module 2. The housing 1 includes a controller housing 11 and a water channel bottom plate 12. The controller housing 11 is constructed with a water channel structure 111. The water channel structure 111 has an inner cavity 1111. The IGBT module 2 is installed on one side of the water channel structure 111. The water channel bottom plate 12 is installed on the side of the water channel structure 111 away from the IGBT module 2. The water channel structure 111 is provided with a partition 1112. The water channel bottom plate 12 is provided with a water inlet 122 and a water outlet 121 communicating with the inner cavity 1111. The water inlet 122 and the water outlet 121 are respectively located on both sides of the partition 1112. The partition 1112 divides the inner cavity 1111 into a "U"-shaped flow channel.
[0035] Figure 1 and Figure 2 The front and back structural diagrams of the box body 1 are shown respectively. Figure 1 As shown, the IGBT module 2 is installed in the box body 1, wherein the water channel structure 111 includes a top wall 1118 and a side wall 1119, the top wall 1118 is arranged opposite to the water channel bottom plate 12, the top wall 1118 and the side wall 1119 are perpendicular to each other and the two are arranged to form an inner cavity 1111, the water channel bottom plate 12 is used to close the inner cavity 1111, and the IGBT module 2 is installed on the side of the top wall 1118 away from the water channel bottom plate 12.
[0036] Exemplarily, the controller housing 11 is made of die-cast aluminum, which has the advantages of good product quality, high production efficiency and light weight.
[0037] Exemplarily, the controller housing 11 and the waterway bottom plate 12 are connected by stir friction welding, which not only helps to improve the aesthetic appearance, but also has better sealing performance.
[0038] Please refer to Figure 2 and Figure 3 The water inlet 122 and the water outlet 121 are located at the upper and lower sides of the partition 1112. The coolant enters the water channel structure 111 from the water inlet 122 and then flows out from the water outlet 121. The coolant flows in the water channel structure 111 and exchanges heat with the IGBT module 2, thereby cooling and dissipating the heat of the IGBT module 2.
[0039] like Figure 3 As shown, a partition 1112 is provided in the water channel structure 111, and the partition 1112 divides the inner cavity 1111 into two interconnected flow channels. The coolant enters the water channel structure 111 from the water inlet 122 at the lower left corner, meanders through the "U"-shaped flow channel, and flows out from the water outlet 121 at the upper left corner.
[0040] It is understandable that the IGBT module 2 may also be replaced by other components that require cooling and heat dissipation.
[0041] The motor controller provided in the embodiment of the present application forms a "U"-shaped flow channel by setting a partition 1112 in the water channel structure 111, thereby increasing the flow path of the coolant in the flow channel. Not only is the structure simple, which is conducive to reducing production costs, but it also improves the heat dissipation effect on the IGBT module 2 and prevents the IGBT module 2 from being damaged due to severe heat.
[0042] In a further embodiment, the partition 1112 is connected to the side wall 1119 on one side of the water channel structure 111, and the partition 1112 is spaced apart from the side wall 1119 on the other side of the water channel structure 111, thereby separating the water channel structure 111 into a first flow channel 1113 and a second flow channel 1114 that are interconnected, and the first flow channel 1113 and the second flow channel 1114 are both protrudingly provided with a plurality of heat dissipation columns 1115.
[0043] like Figure 3 As shown, the partition 1112 is connected to the side wall 1119 on the left side of the water channel structure 111, and the partition 1112 extends to the right side, and there is a gap between the right end of the partition 1112 and the side wall 1119 on the right side of the water channel structure 111, thereby forming a "U"-shaped flow channel.
[0044] like Figure 3As shown, the first flow channel 1113 is located below the second flow channel 1114, the first flow channel 1113 is connected to the water inlet 122, and the second flow channel 1114 is connected to the water outlet 121. After the coolant enters the water channel structure 111 from the water inlet 122, it flows through the first flow channel 1113 and the second flow channel 1114 in sequence, and then flows out from the water outlet 121.
[0045] A plurality of heat dissipation columns 1115 are disposed at intervals in the first flow channel 1113 and the second flow channel 1114 . The heat dissipation columns 1115 protrude outward relative to the top wall 1118 of the water channel structure 111 . The heat dissipation columns 1115 can increase the heat exchange area and improve the cooling effect.
[0046] Exemplarily, the extension direction of the heat dissipation column 1115 is substantially parallel to the flow direction of the coolant.
[0047] In this embodiment, by providing heat dissipation columns 1115 in both the first flow channel 1113 and the second flow channel 1114 , the heat exchange area is increased, which is beneficial to improving the cooling effect.
[0048] In a further embodiment, both ends of the heat dissipation column 1115 in the length direction are arc-shaped.
[0049] like Figure 3 As shown, the length direction of the heat dissipation column 1115 is parallel to the horizontal direction, the width direction of the heat dissipation column 1115 is parallel to the vertical direction, and the left and right ends of the heat dissipation column 1115 are smooth and arc-shaped.
[0050] In this embodiment, by setting both ends of the heat dissipation column 1115 in the length direction to be arc-shaped, the flow resistance of the coolant in the water channel structure 111 can be reduced and the flow characteristics of the coolant can be improved.
[0051] In a further embodiment, arc-shaped protrusions 1115a are provided on both sides of the heat dissipation column 1115 in the width direction, so that the heat dissipation column 1115 is elliptical in shape.
[0052] like Figure 3 As shown, each heat dissipation column 1115 is provided with protrusions 1115a on both sides of the upper and lower sides, and the shape of the protrusions 1115a is smooth and round, and the heat dissipation column 1115 is in an elliptical or rhombus-like shape.
[0053] Through this arrangement, the surface area of the heat dissipation column 1115 is further increased, thereby increasing the heat exchange area between the heat dissipation column 1115 and the coolant, which is beneficial to improving the cooling effect of the water channel structure 111 on the IGBT module 2.
[0054] In a specific embodiment, in the first flow channel 1113 and the second flow channel 1114 , a plurality of heat dissipation columns 1115 are distributed in parallel and staggered.
[0055] like Figure 3 As shown, in the first flow channel 1113 and the second flow channel 1114 , a plurality of heat dissipation columns 1115 are arranged in a plurality of rows, the rows are parallel to each other, and the heat dissipation columns 1115 in two adjacent rows are staggered.
[0056] Through this arrangement, the distribution density of the heat dissipation columns 1115 in the water channel structure 111 is improved, and the flow path of the coolant in the water channel structure 111 is increased, which is beneficial to improving the heat exchange efficiency.
[0057] In a specific embodiment, the water channel structure 111 is further provided with a plurality of guide ribs 1116 , and the plurality of guide ribs 1116 are distributed between the first flow channel 1113 and the second flow channel 1114 at intervals.
[0058] like Figure 3 As shown, a plurality of guide ribs 1116 are distributed at intervals at the connecting corners of the first flow channel 1113 and the second flow channel 1114 , and the guide ribs 1116 are in a strip shape.
[0059] In this embodiment, the guide ribs 1116 guide the coolant in the water channel structure 111 and also increase the contact area between the coolant and the water channel structure 111, which is beneficial to reducing the flow resistance of the coolant and improving the heat dissipation efficiency.
[0060] Furthermore, the guide rib 1116 extends in an arc shape.
[0061] like Figure 3 As shown, multiple guide ribs 1116 are arranged in arc-shaped strips at the connecting corners of the first flow channel 1113 and the second flow channel 1114, which can guide the coolant to flow along the arc-shaped flow channel, reduce flow resistance, and reduce energy consumption.
[0062] Furthermore, a spoiler block 1116 a is provided on the guide rib 1116 , and the spoiler block 1116 a protrudes outward relative to the side wall of the guide rib 1116 .
[0063] like Figure 3 As shown, a plurality of spoiler blocks 1116 a are disposed on each guide rib 1116 , and the plurality of spoiler blocks 1116 a are spaced apart from each other.
[0064] Optionally, the spoiler block 1116a is convex relative to the side walls of the guide rib 1116, and the cross-sectional shape of the spoiler block 1116a can be triangular, circular, elliptical, etc., which is not specifically limited in the present application.
[0065] In this embodiment, by providing spoiler blocks 1116a on the guide ribs 1116, the contact area between the coolant and the water channel structure 111 is increased, which is beneficial to improving the heat exchange efficiency.
[0066] In one embodiment, the water channel structure 111 is further provided with a mounting column 1117 , and streamlined protrusions 1117 a are protruded from both radial sides of the mounting column 1117 .
[0067] The mounting post 1117 is protruded from the top wall 1118 of the water channel structure 111, and the mounting post 1117 is used to connect with the IGBT module 2 or other components in the motor controller. Exemplarily, a threaded hole is provided in the mounting post 1117 to facilitate threaded connection with other components.
[0068] like Figure 3 As shown, there are three installation columns 1117 in the water channel structure 111 , and each installation column 1117 is provided with streamlined protrusions 1117 a on both sides thereof.
[0069] Among them, the extension direction of the streamlined protrusion 1117a is parallel to the water flow direction or is set at an angle to the water flow direction. The streamlined protrusion 1117a has a smooth shape, which plays a certain role in guiding flow, and can also effectively reduce eddy currents and improve heat dissipation capacity.
[0070] An embodiment of the present application also provides a vehicle, comprising a motor controller provided by any of the above embodiments.
[0071] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.
[0072] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.
[0073] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A motor controller, characterized in that: The motor controller comprises a housing (1) and an IGBT module (2); the housing (1) comprises a controller housing (11) and a water channel bottom plate (12); the controller housing (11) is configured with a water channel structure (111); the water channel structure (111) has an inner cavity (1111); the IGBT module (2) is mounted on one side of the water channel structure (111); and the water channel bottom plate (12) is mounted on a side of the water channel structure (111) facing away from the IGBT module (2); The water channel structure (111) is provided with a partition (1112); the water channel bottom plate (12) is provided with a water inlet (122) and a water outlet (121) which are connected to the inner cavity (1111); the water inlet (122) and the water outlet (121) are respectively located on two sides of the partition (1112); and the partition (1112) divides the inner cavity (1111) into a "U"-shaped flow channel.
2. The motor controller according to claim 1, characterized in that: The partition (1112) is connected to a side peripheral wall (1119) on one side of the water channel structure (111), and the partition (1112) is spaced apart from the side peripheral wall (1119) on the other side of the water channel structure (111), thereby separating the water channel structure (111) into a first flow channel (1113) and a second flow channel (1114) that are interconnected, and the first flow channel (1113) and the second flow channel (1114) are both protrudingly provided with a plurality of heat dissipation columns (1115).
3. The motor controller according to claim 2, characterized in that: Both ends of the heat dissipation column (1115) in the length direction are arc-shaped.
4. The motor controller according to claim 3, characterized in that: Arc-shaped protrusions (1115a) are provided on both sides of the heat dissipation column (1115) in the width direction, so that the heat dissipation column (1115) is elliptical in shape.
5. The motor controller according to claim 2, characterized in that: In the first flow channel (1113) and the second flow channel (1114), a plurality of heat dissipation columns (1115) are distributed in parallel and staggered manner.
6. The motor controller according to claim 2, characterized in that: The water channel structure (111) is further provided with a plurality of guide ribs (1116), and the plurality of guide ribs (1116) are distributed at intervals between the first flow channel (1113) and the second flow channel (1114).
7. The motor controller according to claim 6, characterized in that: The guide rib (1116) extends in an arc shape.
8. The motor controller according to claim 7, characterized in that: A spoiler block (1116a) is provided on the guide rib (1116), and the spoiler block (1116a) is protruding outward relative to the side wall of the guide rib (1116).
9. The motor controller according to claim 1, characterized in that: The water channel structure (111) is further provided with a mounting column (1117), and streamlined protrusions (1117a) are protruded on both radial sides of the mounting column (1117).
10. A vehicle, characterized in that: The vehicle comprises a motor controller as claimed in any one of claims 1 to 9.