CN219679049U - Liquid channel structure and motor controller - Google Patents

Abstract

The utility model belongs to the field of automobiles, and particularly relates to a liquid channel structure for supporting capacitor heat dissipation and a motor controller. The liquid channel structure comprises a motor controller shell and a liquid channel cover plate. The motor controller housing is provided with a fluid channel slot and a fluid channel cover plate seals the fluid channel slot to form a cooling fluid channel. The supporting capacitor is arranged above the liquid channel cover plate so as to dissipate heat through the cooling liquid channel. In the utility model, the motor controller shell is provided with the liquid channel groove for cooling medium circulation, and is matched with the liquid channel cover plate to form a cooling liquid channel, the supporting capacitor is positioned above the liquid channel cover plate, namely above the cooling liquid channel, and heat generated by the supporting capacitor is transferred into the cooling medium through the liquid channel cover plate to realize heat dissipation. Therefore, other heat dissipation components do not need to be additionally arranged, compared with the heat dissipation device, the heat dissipation device is lighter in weight and lower in cost, and the heat dissipation efficiency through the cooling medium is higher, so that the heat dissipation requirement of the support capacitor is easily met.

Description

Liquid channel structure and motor controller

Technical Field

The utility model belongs to the field of automobiles, and particularly relates to a liquid channel structure for supporting capacitor heat dissipation and a motor controller.

Background

The motor controller is an important component of the motor control system of the new energy automobile, and in order to ensure the normal work of the motor controller, a heat radiation structure is arranged for radiating besides a heat radiation fan so as to ensure the normal work of the motor controller.

The supporting capacitor is an important component of the motor controller, and at present, two main heat dissipation means of the supporting capacitor exist. First, with supporting capacitor and motor controller casing meet, the heat carries out the heat exchange with the outside air through motor controller casing and reaches the radiating purpose, and this kind of radiating mode cooling effect is relatively poor, and the radiating rate of supporting capacitor is slower. Second, install the water-cooling board on the support electric capacity and dispel the heat through the water-cooling board, although the heat dissipation demand of support electric capacity can be satisfied to the water-cooling board, but, the water-cooling board occupies great inner space, and weight is great, increases the cost.

Disclosure of Invention

The utility model provides a liquid channel structure for supporting capacitor heat dissipation and a motor controller, and aims to solve the technical problems of low heat dissipation efficiency, large weight and high cost in the prior art.

The first aspect of the utility model provides a liquid channel structure for supporting heat dissipation of a capacitor, which comprises a motor controller shell and a liquid channel cover plate. The motor controller housing is provided with a fluid channel slot and a fluid channel cover plate seals the fluid channel slot to form a cooling fluid channel. The supporting capacitor is arranged above the liquid channel cover plate so as to dissipate heat through the cooling liquid channel. In this scheme, the heat that support electric capacity produced is passed through the cooling medium that liquid way apron was passed to in the coolant liquid way to realize the heat dissipation.

In an alternative scheme of the utility model, a heat conducting layer is arranged between the supporting capacitor and the liquid channel cover plate. The heat dissipation efficiency is improved through the heat conduction layer.

In an alternative aspect of the utility model, the fluid channel slot includes a heat sink slot section, and the support capacitor is located above the heat sink slot section. The heat generated by the supporting capacitor is transferred to the cooling medium at the radiating groove section, so that the temperature reduction is realized.

In an alternative scheme of the utility model, the liquid channel groove further comprises a liquid inlet groove section and a liquid outlet groove section which are respectively connected to two sides of the heat dissipation groove section, and the groove width of the liquid inlet groove section and the groove width of the liquid outlet groove section are smaller than the groove width of the heat dissipation groove section. The groove width of the heat dissipation groove section is the section with the largest groove width in the liquid channel groove, and the cooling medium flow velocity at the heat dissipation groove section is the slowest, thereby being beneficial to fully carrying out heat exchange and ensuring the heat dissipation effect.

In an alternative scheme of the utility model, a plurality of guide ribs are arranged in the radiating groove section at intervals, and the guide ribs are used for guiding the cooling medium to cover the whole radiating groove section. The cooling medium is guided to cover the whole radiating groove section through the guide rib, so that the bottom surface of the supporting capacitor can be covered by the radiating groove section, and the stagnation area is avoided.

In an alternative scheme of the utility model, the cooling groove section is divided into a plurality of flow guide channels by the plurality of flow guide ribs, and the flow guide channels are gradually increased and gradually reduced in the flowing direction of the cooling medium from the liquid inlet groove section to the liquid outlet groove section. The guide ribs are adaptively arranged in a way of matching the shape of the liquid channel groove, so that the cooling medium firstly flows in a diffusion way and then flows in a shrinkage way.

In an alternative scheme of the utility model, the motor controller shell is also provided with a liquid inlet and a liquid outlet which are communicated with the liquid channel groove, the liquid inlet is positioned at the liquid inlet groove section, and the liquid outlet is positioned at the liquid outlet groove section. The cooling medium is led into and out of the liquid channel groove through the liquid inlet and the liquid outlet.

In an alternative scheme of the utility model, the motor controller shell is also provided with a plurality of capacitor installation points which are respectively and correspondingly arranged at two sides of the radiating groove section. Two opposite side walls of the supporting capacitor are respectively provided with a plurality of ear seats, and the ear seats are connected with a plurality of capacitor installation points in a one-to-one correspondence manner, so that the supporting capacitor is fixed above the radiating groove section. Through the cooperation of electric capacity mounted point position and ear seat, realize will supporting electric capacity fixed mounting in motor controller casing.

In an alternative scheme of the utility model, the circumferential edge of the liquid channel groove is in sealing connection with the circumferential edge of the liquid channel cover plate through a welding process.

The second aspect of the utility model provides a motor controller comprising the fluid channel structure described above.

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

in the utility model, the motor controller shell is provided with the liquid channel groove for cooling medium circulation, and is matched with the liquid channel cover plate to form a cooling liquid channel, the supporting capacitor is positioned above the liquid channel cover plate, namely above the cooling liquid channel, and heat generated by the supporting capacitor is transferred into the cooling medium through the liquid channel cover plate to realize heat dissipation. Therefore, other heat dissipation components (such as a water cooling plate) are not needed to be additionally arranged, compared with the heat dissipation device, the heat dissipation device is lighter in weight, lower in cost, higher in heat dissipation efficiency through a cooling medium and easy to meet the heat dissipation requirement of the support capacitor.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating an assembly of a motor controller housing and a liquid passage cover plate according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a fluid channel structure for supporting heat dissipation of a capacitor according to one embodiment of the present utility model;

FIG. 3 is a schematic view of the motor controller housing of FIG. 1;

fig. 4 is a schematic view of the liquid channel cover plate in fig. 1.

Reference numerals

1. A motor controller housing; 11. a flow guiding rib; 12. the capacitor is arranged at the point;

2. a liquid channel cover plate;

3. a supporting capacitor; 31. an ear seat;

A. a liquid channel groove; a1, a heat dissipation groove section; a2, a liquid inlet groove section; a3, a liquid outlet groove section; d1, a liquid inlet; and D2, a liquid outlet.

Detailed Description

To further clarify the above and other features and advantages of the present utility model, a further description of the utility model will be rendered by reference to the appended drawings. It should be understood that the specific embodiments presented herein are for purposes of explanation to those skilled in the art and are intended to be illustrative only and not limiting.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the existing first heat dissipation mode, the shell wall of the motor controller shell is subjected to heat exchange with the outside air to achieve the purpose of dissipating heat of the supporting capacitor, and the heat dissipation efficiency of the mode is low; in the existing second heat dissipation mode, the water cooling plate is installed on the supporting capacitor and dissipates heat through the water cooling plate, and although the heat dissipation requirement of the supporting capacitor can be met, the occupied installation space is large, the weight is large, and the cost is high. In view of the above, the present utility model aims to provide a liquid channel structure for supporting heat dissipation of a capacitor, which mainly comprises a motor controller housing 1 and a liquid channel cover plate 2, and has small occupied space and high heat dissipation efficiency by cooling medium. The following is a detailed description.

Fig. 3 is a schematic diagram of a portion of a motor controller housing 1 according to an embodiment of the present utility model, referring to fig. 3, a concave section is provided in the motor controller housing 1, and the concave section is used for circulating a cooling medium, namely, a liquid channel a. Fig. 4 is a schematic view showing a liquid channel cover plate 2 according to one embodiment of the present utility model, fig. 1 is a schematic view showing a liquid channel formed by assembling the liquid channel cover plate 2 in fig. 4 with a motor controller housing in fig. 3, and referring to fig. 1 and 4, the liquid channel cover plate 2 seals a cover liquid channel a, so as to form a cooling liquid channel through which a cooling medium can flow.

In a specific application, the motor controller housing 1 is integrally formed by a casting process and forms the liquid channel groove a, in other words, in the case of eliminating the water cooling plate, the motor controller housing 1 having the liquid channel groove a is redesigned, the liquid channel cover plate 2 can be combined with the motor controller housing 1 and form a cooling liquid channel for cooling the supporting capacitor 3 with the liquid channel groove a, so that the internal space of the motor controller housing 1 can be optimized after eliminating the water cooling plate, the overall weight can be reduced, and in the case of mass production, the cost can be reduced.

It will be appreciated that in order to ensure that the liquid channel cover plate 2 is able to completely seal the liquid channel groove a, the projected area of the liquid channel cover plate 2 is at least required to completely cover the liquid channel groove a. In a specific practical application, the shape of the liquid channel cover plate 2 is basically the same as that of the liquid channel groove A, so that excessive occupation of the installation space in the motor controller shell 1 is avoided. In order to ensure the sealing effect, it is preferable that the circumferential edge of the liquid channel groove a and the circumferential edge of the liquid channel cover plate 2 are sealed by a welding process, specifically, a friction stir welding process. Of course, not limited to this, for example, the motor controller housing 1 and the liquid channel cover plate 2 may be sealed by sealant, and in comparison with the sealing connection achieved by a welding process, the connection stability is better.

The supporting capacitor 3 is located above the liquid channel cover plate 2, and it can be understood that the heat generated by the supporting capacitor 3 can be transmitted to the cooling medium in the cooling liquid channel through the liquid channel cover plate 2, and the heat can be emitted through the cooling medium. It will be appreciated that the liquid channel cover plate 2 should have good heat conductivity, and in particular applications, the liquid channel cover plate 2 is a stamped sheet metal part, for example, an aluminum alloy stamping part, which has good heat dissipation performance and is light in weight.

Therefore, in the disclosure, the cooling liquid channel for cooling medium circulation is formed by arranging the liquid channel groove A in the motor controller shell 1 and matching with the liquid channel cover plate 2, so that the support capacitor 3 is cooled, and compared with a scheme of directly cooling through a shell wall, the cooling efficiency is higher, and the cooling requirement of the support capacitor 3 can be met; compared with the scheme of radiating through the water cooling plate, the radiator is lighter in weight and lower in cost.

In the disclosure, a heat conducting layer is disposed between the supporting capacitor 3 and the liquid channel cover plate 2 to further assist heat conduction and improve heat dissipation efficiency. In a specific application, the heat conducting layer is a heat dissipating silicone grease coated on the liquid channel cover plate 2, or the heat conducting layer is an alloy layer, such as a copper alloy layer, arranged on the liquid channel cover plate 2. Of course, the heat conductive layer is not limited to the above embodiments, and is not illustrated in detail herein.

Referring to fig. 3, in the embodiment of the utility model, the liquid channel groove a includes a heat dissipation groove section A1, the heat dissipation groove section A1 is covered by a corresponding position of the liquid channel cover plate 2 to form a heat dissipation liquid channel section, the supporting capacitor 3 is located above the heat dissipation groove section A1, i.e. above the heat dissipation liquid channel section, and the supporting capacitor 3 dissipates heat in the heat dissipation liquid channel section.

Further, the liquid channel groove A comprises a liquid inlet groove section A2 and a liquid outlet groove section A3 which are connected to two sides of the heat dissipation groove section A1, the liquid inlet groove section A2 and the liquid outlet groove section A3 are covered by corresponding positions of the liquid channel cover plate 2 to form a liquid inlet channel section and a liquid outlet channel section, the liquid inlet channel section and the liquid outlet channel section can play a role in drainage, and a cooling medium is led into the heat dissipation liquid channel section from the liquid inlet channel section and led out from the liquid outlet channel section.

In the present disclosure, the liquid inlet D1 is located at the liquid inlet groove section A2, and therefore, the liquid inlet D1 communicates with the liquid inlet channel section, and the cooling medium is introduced into the liquid inlet channel section through the liquid inlet D1, and then flows into the heat dissipation liquid channel section. The cooling medium flows out through the liquid outlet D2, and the liquid outlet D2 is positioned in the liquid outlet groove section A3, so that the liquid outlet D2 is communicated with the liquid outlet channel section to lead out the cooling medium in the heat dissipation liquid channel section. It will be appreciated that the inlet D1 and the outlet D2 communicate with the channel groove a, i.e. with the cooling channel.

It should be noted that, in a specific application, the liquid inlet D1 and the liquid outlet D2 may be shared with other liquid channels, for example, the liquid channel for cooling the power module, so as to reduce the number of openings on the motor controller housing 1 as much as possible, and thus, it is easy to ensure the tightness of the motor controller housing 1 and reduce the cost.

In the present disclosure, the slot widths of the liquid inlet slot section A2 and the liquid outlet slot section A3 are smaller than the heat dissipating slot section A1, in other words, the liquid channel slot a has a shape with a small slot width at the front and rear sections and a large slot width at the middle section in the flowing direction of the cooling medium, the slot section of the heat dissipating slot section A1 positioned at the middle section is the largest, i.e. the area is the largest, correspondingly, the heat dissipating area of the formed heat dissipating liquid channel section is the largest, the flow velocity of the cooling medium in the heat dissipating liquid channel section is relatively slow, and the heat dissipation of the supporting capacitor 3 is facilitated.

Further, a plurality of guide ribs 11 are arranged in the radiating groove section A1 at intervals, and under the action of the guide ribs 11, cooling medium is guided to different positions of the radiating groove section A1 to basically cover the whole radiating groove section A1, so that the cooling medium can be fully subjected to heat exchange with the supporting capacitor 3, and the radiating effect is ensured.

In the present disclosure, the plurality of guide ribs 11 divide the heat dissipation groove section A1 into a plurality of guide channels, and the guide channels are arranged gradually increasing and gradually decreasing in the flow direction of the cooling medium from the liquid inlet groove section A2 to the liquid outlet groove section A3.

The liquid channel groove a is in a shape of small groove width of the front section and the rear section and large groove width of the middle section, and correspondingly, the plurality of guide ribs 11 are adaptively arranged, so that the cooling medium flows out of the liquid inlet groove section A2 and flows in a diffusion way, and flows in a contraction way before entering the liquid outlet groove section A3, so that the whole cooling medium covers the heat dissipation groove section A1, the cooling medium is uniformly distributed, and the flow velocity in the heat dissipation groove section A1 is minimum, thereby ensuring sufficient heat exchange with the supporting capacitor 3 and ensuring the heat dissipation effect.

Referring to fig. 3, in the embodiment shown in fig. 3, the plurality of flow guiding ribs 11 are irregularly arranged, however, the arrangement of the plurality of flow guiding ribs 11 is not limited to the illustrated embodiment, and it is only necessary to ensure that the cooling medium covers the entire heat dissipation groove section A1.

Referring to fig. 2, in the embodiment of the present utility model, the motor controller housing 1 is further provided with a plurality of capacitor mounting points 12, and the plurality of capacitor mounting points 12 are respectively disposed on two sides of the heat dissipation groove section A1. The opposite side walls of the supporting capacitor 3 are provided with a plurality of ear seats 31, and the ear seats 31 are connected with the capacitor installation points 12 in a one-to-one correspondence manner, so that the supporting capacitor 3 is installed on the motor controller shell 1 and is positioned above the heat dissipation groove section A1.

In practical application, the capacitor installation point 12 is a bolt post with an internal threaded hole, the ear seat 31 is provided with an installation hole, the installation hole of the ear seat 31 is coaxially arranged with the internal threaded hole of the bolt post, and the fixed connection is realized after the bolt is penetrated, that is, the supporting capacitor 3 is fixed on the motor controller shell 1, of course, the capacitor installation point 12 is not limited to this, for example, the capacitor installation point 12 is a bolt seat, the bolt seat is provided with a bolt hole, the installation hole of the ear seat 31 is coaxially arranged with the bolt hole of the bolt seat, and the fixed connection is realized after the bolt is penetrated, so that the supporting capacitor 3 is installed on the motor controller shell 1. And are not illustrated in detail herein.

In summary, since the liquid channel groove a for the cooling medium to circulate is provided in the motor controller housing 1 and is matched with the liquid channel cover plate 2 to form the cooling liquid channel for the cooling of the supporting capacitor 3, no additional cooling component (such as a water cooling plate) is required. In a further scheme, a diversion rib 11 is arranged in the liquid channel groove A so that the cooling medium flows through the whole heat dissipation groove section A1 to ensure the heat dissipation effect. Of course, the liquid channel structure also has other beneficial effects, and repeated description is omitted here.

It should be noted that the cooling medium in the above embodiment is preferably water or a mixture containing water, for example, water added with an antifreezing agent.

The second aspect of the present utility model further provides a motor controller, which includes the above-mentioned fluid channel structure, so that the motor controller obviously has a heat dissipation effect on the supporting capacitor 3 caused by the above-mentioned fluid channel structure, and of course, the motor controller also has other beneficial effects caused by the above-mentioned fluid channel structure, which are not repeated here.

It should be added here that the motor controller shares a housing with the motor, in other words, the portion of the housing for mounting the motor controller component is the motor controller housing 1, and the portion for mounting the motor component is the motor housing.

Further, it will be understood by those skilled in the art that if all or part of the sub-modules involved in each product provided by the embodiments of the present utility model are combined, replaced by fusion, simple variation, mutual transformation, etc., such as each component being placed in a moving position; or the products formed by the two are integrally arranged; or a removable design; it is within the scope of the present utility model to replace the corresponding components of the present utility model with devices/apparatuses/systems that may be combined to form a device/apparatus/system having a specific function.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The liquid channel structure for supporting the heat dissipation of the capacitor is characterized by comprising a motor controller shell (1) and a liquid channel cover plate (2);

the motor controller shell (1) is provided with a liquid channel groove (A), and the liquid channel cover plate (2) seals and covers the liquid channel groove (A) to form a cooling liquid channel;

the supporting capacitor (3) is arranged above the liquid channel cover plate (2) so as to radiate heat through the cooling liquid channel.

2. The liquid channel structure according to claim 1, characterized in that a heat conducting layer is arranged between the supporting capacitor (3) and the liquid channel cover plate (2).

3. The liquid channel structure according to claim 1, characterized in that the liquid channel groove (a) comprises a heat dissipation groove section (A1), and the support capacitor (3) is located above the heat dissipation groove section (A1).

4. A liquid channel structure according to claim 3, wherein the liquid channel (a) further comprises a liquid inlet channel section (A2) and a liquid outlet channel section (A3) respectively connected to two sides of the heat dissipation channel section (A1), and the width of the liquid inlet channel section (A2) and the width of the liquid outlet channel section (A3) are smaller than the width of the heat dissipation channel section (A1).

5. The liquid channel structure according to claim 4, wherein a plurality of guide ribs (11) are arranged in the heat dissipation groove section (A1) at intervals, and the guide ribs (11) are used for guiding cooling medium to cover the whole heat dissipation groove section (A1).

6. The liquid channel structure according to claim 5, characterized in that the plurality of flow guiding ribs (11) divide the heat dissipation groove section (A1) into a plurality of flow guiding channels, and the flow guiding channels are arranged gradually increasing and gradually decreasing in the flow direction of the cooling medium from the liquid inlet groove section (A2) to the liquid outlet groove section (A3).

7. The liquid channel structure according to claim 4, wherein the motor controller housing (1) is further provided with a liquid inlet (D1) and a liquid outlet (D2) which are communicated with the liquid channel groove (a), the liquid inlet (D1) is located in the liquid inlet groove section (A2), and the liquid outlet (D2) is located in the liquid outlet groove section (A3).

8. A liquid channel structure as defined in claim 3, wherein,

the motor controller shell (1) is also provided with a plurality of capacitor installation points (12), and the capacitor installation points (12) are respectively and correspondingly arranged at two sides of the radiating groove section (A1);

the two opposite side walls of the supporting capacitor (3) are respectively provided with a plurality of ear seats (31), and the ear seats (31) are connected with the capacitor installation points (12) in a one-to-one correspondence mode, so that the supporting capacitor (3) is fixed above the radiating groove section (A1).

9. The liquid channel structure according to claim 1, characterized in that the circumferential edge of the liquid channel groove (a) is in sealing connection with the circumferential edge of the liquid channel cover plate (2) by means of a welding process.

10. A motor controller, characterized in that it comprises a liquid channel structure according to any one of claims 1 to 9.