Motor controller and automobile

Abstract

The invention provides a motor controller and an automobile, and the motor controller comprises a first box body which is provided with a first cooling water channel, and the first cooling water channel is provided with a first water inlet and a first water outlet; the second box body and the first box body are arranged in a stacked mode, the second box body is provided with a second cooling water channel, the second cooling water channel is provided with a second water inlet and a second water outlet, and the second water inlet and the second water outlet are communicated with the first cooling water channel. Through the arrangement, a double-layer structure is formed, the space of the motor controller in the height direction is fully utilized, the size of the motor controller in the length direction and the width direction in a whole vehicle can be optimized, and the occupied space is reduced; the flow path of the cooling liquid is increased, the cooling liquid can flow in the upper layer and the lower layer, more heat is taken away, parts in the first box body and the second box body are fully cooled, and the heat dissipation effect of the motor controller is improved.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly to a motor controller and an automobile. Background Art

[0002] Currently, new energy vehicles are developing rapidly and occupying an increasingly important position in the market.

[0003] As one of the core components of new energy vehicles, the motor controller is a decisive factor in the vehicle's power performance. The motor controller obtains the vehicle's requirements from the vehicle controller and electrical energy from the power battery pack. Through the modulation of its own inverter, it obtains the current and voltage required to control the motor and supplies them to the motor, enabling the motor's speed and torque to meet the vehicle's requirements. It also has functions such as power on / off management, torque control, forward and reverse rotation of the motor, active discharge function, creep control, slope parking - zero speed control, anti - shake, energy recovery, and thermal management function.

[0004] In current new energy vehicles on the market, in order to balance the body stiffness and the vehicle's weight, the layout space of the motor controller is becoming more and more limited. How to improve the heat dissipation effect of the motor controller under the premise of limited layout space and ensure the stable operation of the motor controller has become an urgent problem to be solved. Summary of the Invention

[0005] In view of this, this application provides a motor controller and an automobile, which can improve the heat dissipation effect while reducing the space occupied by the motor controller.

[0006] Specifically, the following technical solutions are included:

[0007] In a first aspect, this application provides a motor controller, which includes:

[0008] A first box body, which is constructed with a first cooling water channel having a first water inlet and a first water outlet;

[0009] A second box body, which is stacked with the first box body. The second box body is constructed with a second cooling water channel having a second water inlet and a second water outlet, and the second water inlet and the second water outlet are respectively communicated with the first cooling water channel.

[0010] In some possible implementation manners, the first cooling water channel includes multiple sub - water channels that are sequentially communicated, and the multiple sub - water channels are meanderingly distributed in the first box body.

[0011] In some possible implementation manners, the heights of the water inlet and the water outlet of at least one sub - water channel are different.

[0012] In some possible implementations, at least two sections of the sub-water channels have different heights and are cross-distributed.

[0013] In some possible implementations, the plurality of sequentially connected sub-water channels include a first water channel and a second water channel;

[0014] The first water channel is connected to the first water inlet, the first water channel has a third water outlet, and the third water outlet is connected to the second water inlet;

[0015] The second water channel has a third water inlet, and the third water inlet is communicated with the second water outlet.

[0016] In some possible implementations, an extension direction of the first water channel is inclined to an extension direction of the second water channel.

[0017] In some possible implementations, the multiple sections of sequentially connected sub-water channels further include a third water channel and a fourth water channel, the third water channel is connected to the second water channel and the fourth water channel respectively, and the fourth water channel is connected to the first water outlet.

[0018] In some possible embodiments, the motor controller also includes an IGBT power module and an MCU control module, both of which are located in the first housing, the MCU control module is located in the area where the first water channel and the fourth water channel are located, and the IGBT power module is located in the area where the second water channel and the third water channel are located.

[0019] In some possible implementations, the motor controller further includes a power module, and the power module is located in the second box.

[0020] In a second aspect, the present application provides a car, comprising a motor controller provided by any embodiment of the first aspect.

[0021] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: by arranging a first box body and a second box body that are stacked and distributed in a layered manner in the motor controller, a double-layer structure is formed, which makes full use of the space of the motor controller in the height direction, helps to optimize the dimensions of the motor controller in the length and width directions in the vehicle, and reduces the occupied space; since the first box body and the second box body are respectively constructed with a first cooling water channel and a second cooling water channel, and the second water inlet and the second water outlet of the second cooling water channel are respectively connected to the first cooling water channel, the flow path of the coolant is increased, and the coolant can flow in the upper and lower layers, taking away more heat, and fully cooling and dissipating the components in the first box body and the second box body, thereby improving the heat dissipation effect of the motor controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic exploded view of the motor controller provided by the embodiment of the present application;

[0024] Figure 2 Schematic structural view of the first box body provided by the embodiment of the present application;

[0025] Figure 3 Schematic structural view of the second box body provided by the embodiment of the present application;

[0026] Figure 4 Schematic position view of the IGBT power module and the MCU control module in the first box body provided by the embodiment of the present application;

[0027] Figure 5 Schematic position view of the power module in the second box body provided by the embodiment of the present application.

[0028] The reference numerals in the drawings are respectively represented as:

[0029] 1 - First box body; 11 - First cooling water channel; 111 - First water inlet; 112 - First water outlet; 113 - Sub - water channel; 1131 - First water channel; 11311 - Third water outlet; 1132 - Second water channel; 11321 - Third water inlet; 1133 - Third water channel; 1134 - Fourth water channel;

[0030] 2 - Second box body; 21 - Second cooling water channel; 211 - Second water inlet; 212 - Second water outlet;

[0031] 3 - Upper cover plate;

[0032] 4 - First water channel cover plate;

[0033] 5 - Second water channel cover plate;

[0034] 6 - IGBT power module;

[0035] 7 - MCU control module;

[0036] 8 - Power module.

[0037] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the concept 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 of the Embodiments

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0039] For the orientation terms involved in the embodiments of the present application, such as "upper", "lower", "side", etc., generally based on the relative relationship of the orientation shown in the drawings, and using these orientation terms is only to more clearly describe the relationship between the structure and the structure, rather than to describe the absolute orientation. When the product is placed in different postures, the orientation may change. For example, "upper" and "lower" may be interchanged.

[0040] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meaning as commonly understood by those of ordinary skill in the art.

[0041] To make the technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0042] At present, new energy vehicles are developing rapidly and occupy an increasingly important position in the market.

[0043] As one of the core components of new energy vehicles, the motor controller is a decisive factor for the vehicle's power performance. The motor controller obtains the vehicle's requirements from the vehicle controller, obtains electrical energy from the power battery pack, and through the modulation of its own inverter, obtains the current and voltage required to control the motor, and supplies them to the motor, so that the speed and torque of the motor meet the requirements of the vehicle. It also has functions such as power on / off management, torque control, forward and reverse rotation of the motor, active discharge function, creep control, slope parking - zero speed control, anti - shake, energy recovery, and thermal management function.

[0044] In current new energy vehicles on the market, in order to balance the body stiffness and the vehicle weight, the layout space of the motor controller is becoming more and more limited. How to improve the heat dissipation effect of the motor controller under the premise of limited layout space and ensure the stable operation of the motor controller has become an urgent problem to be solved.

[0045] To solve the above - mentioned technical problems, the present application provides a motor controller and a vehicle.

[0046] like Figure 1 As shown, the motor controller includes a first box body 1 and a second box body 2 .

[0047] The first housing 1 is configured with a first cooling water channel 11 , and the first cooling water channel 11 has a first water inlet 111 and a first water outlet 112 .

[0048] The second housing 2 is stacked with the first housing 1 , and the second housing 2 is provided with a second cooling water channel 21 . The second cooling water channel 21 has a second water inlet 211 and a second water outlet 212 . The second water inlet 211 and the second water outlet 212 are respectively connected to the first cooling water channel 11 .

[0049] like Figure 1 As shown, the first box body 1 and the second box body 2 are stacked in the height direction, and the second box body 2 is located at the bottom of the first box body 1.

[0050] The first box 1 and the second box 2 are both used to accommodate components of the motor controller, such as input / output interface circuits, control motherboards, arithmetic units, memories, sensors, drive motherboards, supercapacitors, discharge resistors, DC high-voltage connectors, UVW connectors, etc.

[0051] Specifically, Figure 1 As shown, the motor controller further includes an upper cover plate 3, which is disposed on a side of the first box body 1 facing away from the second box body 2 (i.e. Figure 1 The upper part of the first box body 1 is formed by a plurality of holes, thereby closing the first box body 1 and providing protection for the components in the first box body 1.

[0052] like Figure 1 As shown, the motor controller also includes a first water channel cover plate 4, which is used to cover the first cooling water channel 11 to close at least part of the first cooling water channel 11 to prevent the coolant in the first cooling water channel 11 from flowing out and affecting the normal operation of components.

[0053] Exemplarily, a portion of the first cooling water channel 11 is a sealed channel arranged in the bottom wall of the first box body 1, forming a tubular structure; the other portion is an open groove structure with an opening at the top, and the first water channel cover plate 4 can be connected to the groove structure to form a relatively sealed tubular channel, thereby ensuring the leakage-proof effect of the first cooling water channel 11.

[0054] like Figure 1 As shown, the motor controller also includes a second water channel cover plate 5, which is used to cover the second cooling water channel 21 to close at least part of the second cooling water channel 21 to prevent the coolant in the second cooling water channel 21 from flowing out and affecting the normal operation of components.

[0055] Exemplarily, a part of the second cooling water channel 21 is a sealed channel arranged inside the bottom wall of the second box body 2, forming a tubular structure; another part is an open trough-shaped structure with an opening at the upper part. The second water channel cover plate 5 can be docked with the trough-shaped structure to form a relatively sealed tubular channel, thereby ensuring the leak prevention effect of the second cooling water channel 21.

[0056] Exemplarily, the second cooling water channel 21 is bent. For example Figure 3 As shown, the second cooling water channel 21 is generally in a "U" shape, which increases the flow path length of the coolant in the second cooling water channel 21, is beneficial to extending the flow time of the coolant in the second cooling water channel 21, and improves the cooling and heat dissipation effect.

[0057] Exemplarily, the first water inlet 111 and the first water outlet 112 are arranged on the side wall of the first box body 1. As Figure 2 shown, the first water inlet 111 is located on the outer side wall of the first box body 1 and can be docked and communicated with a pipeline, so that the coolant enters the first cooling water channel 11 through the first water inlet 111 under the drive of a water pump.

[0058] In some embodiments, please refer to Figure 2 and Figure 3 the arrow marks indicating the coolant flow direction in, the flow path of the coolant in the motor controller is as follows: the coolant enters the first cooling water channel 11 from the first water inlet 111 to cool and dissipate heat from the components in the first box body 1; the coolant then enters the second cooling water channel 21 from the second water inlet 211 to cool and dissipate heat from the components in the second box body 2; subsequently, the coolant returns to the first cooling water channel 11 again from the second water outlet 212, and then flows out of the motor controller through the first water outlet 112.

[0059] Optionally, the coolant flowing out from the first water outlet 112 can flow into an oil cooler or can also flow into the heat dissipation water channel of the drive motor, and the present application does not make specific limitations.

[0060] In the related art, most of the cooling water channels of the motor controllers on the market are flat-type series water channels. As the number of integrated components of the vehicle increases, the required heat dissipation area gradually increases, the space in the length direction and width direction of the motor controller is expanded, resulting in the compression of the space in the whole vehicle cabin, while the space in the height direction of the motor controller is not fully utilized, affecting the heat dissipation of other parts of the vehicle and being not conducive to improving the space utilization rate of the whole vehicle cabin.

[0061] The motor controller provided by the embodiment of the present application forms a double-layer structure by arranging the first box body 1 and the second box body 2 in a stacked manner in the motor controller, making full use of the space of the motor controller in the height direction, which helps to optimize the dimensions of the motor controller in the length and width directions in the whole vehicle and reduces the occupied space. Since the first box body 1 and the second box body 2 are respectively provided with a first cooling water channel 11 and a second cooling water channel 21, and the second water inlet 211 and the second water outlet 212 of the second cooling water channel 21 are respectively communicated with the first cooling water channel 11, the flow path of the coolant is increased, and the coolant can flow in the upper and lower layers, taking away more heat, fully cooling and dissipating the heat of the components in the first box body 1 and the second box body 2, and improving the heat dissipation effect of the motor controller.

[0062] In some embodiments, the first cooling water channel 11 includes multiple sub-water channels 113 that are sequentially communicated, and the multiple sub-water channels 113 are meanderingly distributed in the first box body 1.

[0063] As Figure 2 shown, the first cooling water channel 11 includes four sub-water channels 113 that are sequentially communicated, and the four sub-water channels 113 are not arranged parallel to each other in the first box body 1, but extend and meander in a zigzag path.

[0064] The continuous turning design of the multiple sub-water channels 113 can cover the heat dissipation requirements of different regions in the first box body 1, eliminate local heat dissipation blind spots, and improve the heat dissipation effect.

[0065] Moreover, the segmented structure is convenient for carrying out differential water channel design for different heat regions in the first box body 1, and improving the space utilization rate.

[0066] In this embodiment, by arranging the multiple sub-water channels 113 to be meanderingly distributed in the first box body 1, an irregular and complex cooling path is formed. Compared with the conventional straight cooling water channel, the flow time of the coolant in the first cooling water channel 11 is extended.

[0067] In some embodiments, the heights of the water inlet and the water outlet of at least one sub-water channel 113 are different.

[0068] Each sub-water channel 113 has a water inlet and a water outlet. The coolant enters the sub-water channel 113 from the water inlet, flows out from the water outlet and enters the water inlet of the next sub-water channel 113.

[0069] In this embodiment, by setting the heights of the water inlet and the water outlet of at least one sub-water channel 113 to be different, the arrangement of the sub-water channel 113 is made more three-dimensional, making full use of the space in the height direction of the first box body 1, increasing the flow path length of the coolant in the sub-water channel 113, extending the flow time of the coolant in the sub-water channel 113, and improving the cooling and heat dissipation effect.

[0070] In some embodiments, the heights of at least two sub-water channels 113 are different and they are cross-distributed.

[0071] Exemplarily, one of the sub-water channels 113 is a sealed channel arranged in the bottom wall of the first box body 1, forming a tubular structure, and the other sub-water channel 113 is an open trough-shaped structure with an upper opening. These two sub-water channels 113 are arranged at intervals in the height direction of the first box body 1, and the orthographic projections of these two sub-water channels 113 on the bottom wall of the first box body 1 intersect each other.

[0072] In this embodiment, by setting the heights of at least two sub-water channels 113 to be different and cross-distributed, the arrangement of the first cooling water channel 11 is made more three-dimensional, making full use of the space in the height direction of the first box body 1 and increasing the effective heat dissipation area per unit volume.

[0073] In some embodiments, multiple successively connected sub-water channels 113 include a first water channel 1131 and a second water channel 1132.

[0074] The first water channel 1131 is communicated with the first water inlet 111. The first water channel 1131 has a third water outlet 11311, and the third water outlet 11311 is communicated with the second water inlet 211.

[0075] The second water channel 1132 has a third water inlet 11321, and the third water inlet 11321 is communicated with the second water outlet 212.

[0076] Specifically, after the coolant enters the first water channel 1131 from the first water inlet 111, it flows into the second cooling water channel 21 from the third water outlet 11311 and the second water inlet 211, and then flows into the third water inlet 11321 from the second water outlet 212 of the second cooling water channel 21 and enters the second water channel 1132.

[0077] In this embodiment, the first water channel 1131, the second cooling water channel 21, and the second water channel 1132 are successively communicated. The first water channel 1131 and the second water channel 1132 can dissipate heat from the components in the first box body 1, and the second cooling water channel 21 can dissipate heat from the components in the second box body 2, realizing hierarchical and zonal heat dissipation and cooling of the motor controller and improving the heat dissipation effect.

[0078] In some embodiments, the extending direction of the first water channel 1131 is inclined to the extending direction of the second water channel 1132.

[0079] Exemplarily, the second water channel 1132 includes a front section and a rear section. Both the front section and the rear section are linear and their extending directions are inclined to each other. The third water inlet 11321 is arranged in the front section. The first water channel 1131 and the front section are inclined to each other, forming a "V"-shaped flow channel.

[0080] In this embodiment, by arranging the first water channel 1131 and the second water channel 1132 obliquely, the flow path length of the coolant in the first water channel 1131 and the second water channel 1132 is increased, the flow time of the coolant in the sub-water channel 113 is extended, and the cooling and heat dissipation effect is improved.

[0081] In some further embodiments, the multi-segment sub-water channels 113 that are sequentially connected also include a third water channel 1133 and a fourth water channel 1134. The third water channel 1133 is respectively connected to the second water channel 1132 and the fourth water channel 1134, and the fourth water channel 1134 is connected to the first water outlet 112.

[0082] In this embodiment, the first cooling water channel 11 includes the first water channel 1131, the second water channel 1132, the third water channel 1133, and the fourth water channel 1134. The flow path of the coolant in the motor controller is as follows:

[0083] After the coolant enters the first water channel 1131 from the first water inlet 111, it flows into the second cooling water channel 21 in the second box body 2 from the third water outlet 11311 and the second water inlet 211. Subsequently, it flows into the third water inlet 11321 from the second water outlet 212 of the second cooling water channel 21, enters the second water channel 1132 in the first box body 1, then sequentially flows through the third water channel 1133 and the fourth water channel 1134, and finally flows out of the motor controller through the first water outlet 112.

[0084] The four sub-water channels 113 of the first cooling water channel 11 facilitate the differential water channel design for different heat regions in the first box body 1, improve the space utilization rate, and increase the flow path length of the coolant in the first cooling water channel 11, which helps to extend the flow time of the coolant in the sub-water channel 113 and improve the cooling and heat dissipation effect.

[0085] In some embodiments, the motor controller further includes an IGBT power module 6 and an MCU control module 7. Both the IGBT power module 6 and the MCU control module 7 are located in the first box body 1. The MCU control module 7 is located in the region where the first water channel 1131 and the fourth water channel 1134 are located, and the IGBT power module 6 is located in the region where the second water channel 1132 and the third water channel 1133 are located.

[0086] Among them, the IGBT (Insulated Gate Bipolar Transistor) power module 6, as a key power switching device, is used to modulate and convert direct current through its own switching state, so as to output alternating current that meets the requirements of the motor. By controlling the switching state of the IGBT power module 6, the control of the driving states such as motor startup, operation, forward and reverse speed, and climbing force can also be achieved.

[0087] Such asFigure 4 As shown, the approximate positions of the IGBT power module 6 and the MCU control module 7 within the first housing 1 are shown by the dashed lines. Most of the MCU control module 7 is located in the area where the first water channel 1131 and the fourth water channel 1134 are located, and most of the IGBT power module 6 is located in the area where the second water channel 1132 and the third water channel 1133 are located.

[0088] In this embodiment, the IGBT power module 6 and the MCU control module 7 are arranged within the first housing 1, and the first cooling water channel 11 located at the upstream end is used to fully cool and dissipate heat from the IGBT power module 6 and the MCU control module 7, reducing the temperatures of the IGBT power module 6 and the MCU control module 7 during operation and avoiding failures caused by overheating.

[0089] In a further embodiment, the motor controller further includes a power supply module 8, and the power supply module 8 is located within the second housing 2.

[0090] As Figure 5 shown, the position where the power supply module 8 is located is shown by the dashed line in the figure.

[0091] Specifically, the power supply module 8 is a CMDC two-in-one charging module, which is a functional component integrating a conventional charging module (Charge Module) and a DC / DC converter (DC / DC Converter), and is mainly used for the charging and power conversion scenarios of new energy vehicles.

[0092] The volume of the power supply module 8 is smaller than that of the IGBT power module 6 and the MCU control module 7. By arranging the power supply module 8 within the second housing 2, it is beneficial to reduce the size of the second housing 2 and the space occupied by the motor controller.

[0093] The embodiment of the present application also provides a vehicle, including the motor controller provided in any of the above embodiments.

[0094] Optionally, the vehicle is a new energy vehicle.

[0095] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plurality" means two or more, unless otherwise clearly defined.

[0096] Those skilled in the art will readily think of other implementation schemes 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 adaptive changes of the present application, and these variations, uses, or adaptive changes follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary.

[0097] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A motor controller, characterized in that, The motor controller includes: A first housing (1) configured with a first cooling water channel (11), the first cooling water channel (11) having a first water inlet (111) and a first water outlet (112); A second housing (2) stacked with the first housing (1), the second housing (2) configured with a second cooling water channel (21), the second cooling water channel (21) having a second water inlet (211) and a second water outlet (212), the second water inlet (211) and the second water outlet (212) being respectively communicated with the first cooling water channel (11).

2. The motor controller according to claim 1, characterized in that, The first cooling water channel (11) includes multiple sub-channels (113) connected in sequence, and the multiple sub-channels (113) are meanderingly distributed within the first housing (1).

3. The motor controller according to claim 2, wherein, The height of the water inlet and the water outlet of at least one of the sub-channels (113) is different.

4. The motor controller according to claim 2, wherein At least two of the sub-channels (113) have different heights and are cross-distributed.

5. The motor controller according to claim 2, characterized in that, The multiple sub-channels (113) connected in sequence include a first water channel (1131) and a second water channel (1132); The first water channel (1131) is communicated with the first water inlet (111), the first water channel (1131) having a third water outlet (11311), the third water outlet (11311) being communicated with the second water inlet (211); The second water channel (1132) has a third water inlet (11321), the third water inlet (11321) being communicated with the second water outlet (212).

6. The motor controller according to claim 5, characterized in that The extending direction of the first water channel (1131) is inclined to the extending direction of the second water channel (1132).

7. The motor controller according to claim 5, characterized in that The multiple sub-channels (113) connected in sequence further include a third water channel (1133) and a fourth water channel (1134), the third water channel (1133) being respectively communicated with the second water channel (1132) and the fourth water channel (1134), the fourth water channel (1134) being connected to the first water outlet (112).

8. The motor controller according to claim 7, characterized in that, The motor controller further includes an IGBT power module (6) and an MCU control module (7), the IGBT power module (6) and the MCU control module (7) both being located within the first housing (1), the MCU control module (7) being located in the area where the first water channel (1131) and the fourth water channel (1134) are located, the IGBT power module (6) being located in the area where the second water channel (1132) and the third water channel (1133) are located.

9. The motor controller according to claim 8, wherein The motor controller further includes a power module (8), the power module (8) being located within the second housing (2).

10. A vehicle, characterized in that, The vehicle includes the motor controller according to any one of claims 1 to 9.

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