CN218959352U - Electric vehicle controller and electric vehicle - Google Patents

Abstract

The utility model belongs to the field of electric vehicle controllers, and provides an electric vehicle controller, which comprises: a housing; a circuit board disposed in the housing; a plurality of power tubes welded on the circuit board; the metal connecting pieces are provided with at least one avoidance groove for other metal connecting pieces to pass through; the plurality of metal connectors are configured as a negative electrode wiring member electrically connected with the circuit board, and at least four thermal relays connected with the metal back plate of the power tube. The utility model further provides an electric vehicle. In the electric vehicle controller, when conducting heat and/or realizing power supply input to a plurality of power tubes, the metal connecting pieces can be penetrated by other metal connecting pieces when needed instead of directly crossing over, simply stacking or avoiding other metal connecting pieces, so that the compactness and integration of the inside of the electric vehicle controller are maintained, and the volume of the electric vehicle controller is controlled.

Description

Electric vehicle controller and electric vehicle

Technical Field

The utility model belongs to the technical field of electric vehicle controllers, and particularly relates to an electric vehicle controller and an electric vehicle.

Background

In the prior art, a three-phase motor is generally adopted to drive an electric vehicle to move, and an electric vehicle controller is adopted to control the three-phase motor so as to control the movement of the electric vehicle.

When the internal structures of the electric vehicle controller are arranged and laid out, the internal structures of the electric vehicle controller are required to directly span other structures or be directly stacked together with other structures, or the internal structures of the electric vehicle controller are required to avoid other structures, so that the internal structures of the electric vehicle controller are compact and integrated, and the volume of the electric vehicle controller is further influenced.

Disclosure of Invention

The embodiment of the utility model provides an electric vehicle controller, which aims to solve the technical problem that the volume of the electric vehicle controller is affected due to the fact that the interior of the electric vehicle controller is not compact and integrated enough because some internal structures in the existing electric vehicle controller need to span, stack or avoid other structures.

The embodiment of the utility model is realized in such a way that an electric vehicle controller comprises:

a housing;

a circuit board disposed in the housing;

a plurality of power tubes welded on the circuit board; and

the metal connecting pieces are provided with at least one avoidance groove for other metal connecting pieces to pass through;

The plurality of metal connectors are configured as a negative electrode wiring member electrically connected with the circuit board, and at least four thermal relays connected with the metal back plate of the power tube.

Still further, the metal connector includes:

a main body; and

an extension formed to extend from the body;

the avoidance groove is arranged on the main body and/or the extension part.

Still further, the metal connector includes:

a main body;

an extension formed to extend from the body; and

and the wire terminal is connected with the main body or the extension part, and the avoidance groove is arranged on the wire terminal.

Further, the body is integrally formed with the terminal; or (b)

The extension part and the wiring terminal are integrally formed; or (b)

The body, the extension and the terminal are integrally formed.

Further, the main body is provided with a heat absorbing surface which is thermally connected with the metal back plate of the power tube;

the body and/or the extension has a heat transfer surface in insulating thermal connection with the housing.

Further, the heat absorbing surface and the power tube arranged on the heat absorbing surface form a thermal connection surface;

the area of the heat absorbing surface is larger than or equal to the area of the thermal connecting surface;

The extension is located at least partially outside the forward projection area of the four perpendicular faces of the thermal connection face.

Further, the escape groove is formed by recessing the heat transfer surface toward a side of the metal connection member facing away from the heat transfer surface.

Still further, the metal connector is aluminum, copper or copper aluminum composite.

The utility model also provides an electric vehicle, comprising:

a three-phase motor; and

the electric vehicle controller according to any one of the preceding claims, wherein the three-phase line interface of the three-phase motor is electrically connected to the three-phase output of the electric vehicle controller.

According to the electric vehicle controller, at least one avoidance groove for penetrating other metal connecting pieces is formed in at least one of the metal connecting pieces, so that the metal connecting pieces can penetrate the other metal connecting pieces when needed instead of directly crossing over, simply stacking or avoiding the other metal connecting pieces when conducting heat dissipation on the power tubes and/or realizing power supply input, the compactness and integration inside the electric vehicle controller are maintained, and the volume of the electric vehicle controller is controlled.

Drawings

Fig. 1 is a schematic perspective view of an electric vehicle controller according to an embodiment of the present utility model;

Fig. 2 is a schematic perspective exploded view of an electric vehicle controller according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a metal connector according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view illustrating disassembly of a metal connector according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a power tube according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a vertical installation of a power tube according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view illustrating a power tube obliquely installed according to an embodiment of the present utility model;

fig. 8 is a schematic perspective view of an electric vehicle controller according to another embodiment of the present utility model;

fig. 9 is a schematic perspective exploded view of an electric vehicle controller according to another embodiment of the present utility model;

FIG. 10 is a schematic perspective view of a metal connector according to another embodiment of the present utility model;

FIG. 11 is another perspective view of a metal connector according to another embodiment of the present utility model;

FIG. 12 is a schematic perspective view illustrating a metal connector according to another embodiment of the present utility model;

FIG. 13 is a schematic view of orthographic projection areas of four perpendicular surfaces of a thermal interface provided in an embodiment of the present utility model;

Fig. 14 is a schematic structural diagram of an electric vehicle according to an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated in the description of the direction and positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of description of the present utility model and simplification of the description, and is not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed 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 one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In this embodiment, at least one avoidance groove through which other metal connectors pass is provided on at least one of the plurality of metal connectors, so that the plurality of metal connectors can pass through the other metal connectors when needed when conducting and/or radiating the plurality of power tubes.

Example 1

Referring to fig. 1 to 4 and fig. 8 to 12, the electric vehicle controller 100 of the present utility model includes a plurality of metal connectors 10, a plurality of power tubes 20, a circuit board 30 and a housing 40, at least one avoiding groove 11 through which other metal connectors 10 can pass is provided on at least one metal connector 10, at least four thermal relays 101 configured to be connected to the metal back plate 21 of the power tube 20 and a negative electrode wiring member 102 electrically connected to the circuit board 30 are provided on the plurality of metal connectors 10, the plurality of power tubes 20 are welded on the circuit board 30, and the circuit board 30 is provided in the housing 40.

In the electric vehicle controller 100 of the present utility model, at least one avoidance groove 11 through which other metal connectors 10 pass is provided on at least one of the plurality of metal connectors 10, so that the plurality of metal connectors 10 can pass through other metal connectors 10 instead of directly crossing over, simply stacking or avoiding other metal connectors 10 when conducting heat and/or realizing power supply input to the plurality of power tubes 20, thereby maintaining the compactness and integration inside the electric vehicle controller 100 and further controlling the volume of the electric vehicle controller 100.

In the embodiment of the present utility model, the electric vehicle controller 100 may be a three-phase motor controller, which is applied to the electric vehicle 1000 to provide three-phase output, so as to realize accurate control of the three-phase motor 200 of the electric vehicle 1000 and the electric vehicle 1000. The three-phase motor controller is a commonly used controller in the field of electric vehicles 1000, and the functions and advantages thereof are not described herein.

It should be noted that, in the following description, when referring to the metal connector 10 for heat conduction and dissipation, if not specifically stated, the embodiment mainly refers to the case that the metal connector 10 is configured to conduct heat conduction and dissipation to the power tube 20 by the thermal relay 101, and when the metal connector 10 is configured to be the negative electrode wire member 102, the embodiment mainly plays a role in realizing negative electrode input of a power source.

Of course, it will be understood that when the negative electrode connection member 102 is electrically and thermally connected to the housing 40 of the electric vehicle controller 100, a certain heat dissipation effect can be achieved on the circuit board 30, but the heat dissipation of the power tube 20 is not particularly obvious with respect to the heat relay 101, so that the heat dissipation of the electric vehicle controller 100 is achieved mainly by the heat relay 101.

Referring to fig. 2 and 5, in the present embodiment, the power tube 20 may be a direct-insertion visible metal package power tube 20, which is formed by packaging three pins and a metal back plate 21 together by plastic packaging, wherein the three pins are respectively a gate, a drain and a source, and are arranged in a row on the plastic packaging, the metal back plate 21 is electrically connected with the drain, and the power tube 20 is soldered with a circuit board 30 through the three pins to be fixed on the circuit board 30.

The number of the power tubes 20 is at least 6 groups, at least 3 groups of upper bridge arm power tubes 201 and at least 3 groups of lower bridge arm power tubes 202 configured as A, B, C three phases are used for meeting the basic requirement of three-phase output of the electric vehicle controller 100, and the single power tube 20 can be 1 group.

In the embodiment shown in fig. 2, the total number of power tubes 20 is 18, and in the embodiment shown in fig. 8, the total number of power tubes 20 is 84, and the greater the number of power tubes 20, the greater the power of the electric vehicle controller 100.

The types, the numbers, the combinations, the arrangements, etc. of the power tubes 20 are not specifically limited herein, and the types, the numbers, the combinations, the arrangements, etc. of the power tubes 20 shown in the embodiments of the present utility model are only exemplary, and should not be construed as limiting the present utility model, so long as the above-mentioned items of the power tubes 20 are specifically selected in combination with specific power requirements of the electric vehicle controller 100 on the basis of ensuring that the electric vehicle controller 100 can normally provide three-phase output.

The power tube 20 may be mounted on the circuit board 30 in a horizontal, vertical or inclined mounting manner, specifically:

as shown in fig. 1 and 8, the metal back plate 21 horizontally installed as the power tube 20 is parallel to the circuit board 30;

as shown in fig. 6, the metal back plate 21 vertically installed as the power tube 20 is perpendicular to the circuit board 30;

As shown in fig. 7, the metal back plate 21, which is mounted obliquely as the power tube 20, is inclined with respect to the circuit board 30.

In the preferred embodiment of the present utility model, the power tube 20 is mounted on the circuit board 30 in a horizontal mounting manner, and by this mounting manner, the power tube 20 occupies less space in the vertical direction in the electric vehicle controller 100, and is more convenient for the installation of the thermal relay 101.

In the case where the metal connector 10 is configured as the thermal relay 101:

the heat relay body 101 is electrically and thermally connected with the metal backboard 21 of the power tube 20, namely, the heat relay body 101 can simultaneously realize electric conduction and heat conduction on the power tube 20, so that normal operation of the power tube 20 is ensured, and is also electrically and thermally connected with the shell 40 in an insulating manner, so that a heat dissipation path from the power tube 20 to the heat relay body 101 to the shell 40 can be established on the premise of ensuring electrical safety of the electric vehicle controller 100, and heat generated by the power tube 20 is conducted to the shell 40 for effective heat dissipation.

It should be noted that, the conductive thermal connection may be understood that the thermal relay 101 is directly contacted with the metal back plate 21 of the power tube 20, and the thermal relay 101 and the metal back plate 21 of the power tube 20 can conduct electricity and conduct heat therebetween, or may be understood that the thermal relay 101 is indirectly contacted with other elements to achieve indirect conduction and heat conduction.

In the embodiment of the present utility model, the conductive thermal connection refers to that the thermal relay 101 is directly contacted with the metal back plate 21 of the power tube 20 to conduct electricity and heat, and can be achieved by contacting the thermal relay 101 with any part of the metal back plate 21, for example, contacting the thermal relay 101 with the front, back and/or side of the metal back plate 21, so as to achieve the purpose of conductive thermal connection. The back surface of the metal back plate 21 of the power tube 20 is the lower surface of the metal back plate 21 shown in fig. 5, and the upper surface is the front surface of the metal back plate 21.

It should be noted that the insulating thermal connection is understood to be firstly insulating and nonconductive between the thermal relay 101 and the housing 40, so as to avoid short circuit or other damage caused by current transmission of the power tube 20 to the housing 40, and insulation between the thermal relay 101 and/or the housing 40 can be achieved by coating an insulating coating or insulating an object at intervals, and meanwhile, the housing 40 also has a certain heat conduction capability, so that heat dissipation of the electric vehicle controller 100 can be achieved on the premise that insulation contact with the thermal relay 101 ensures electrical safety of the electric vehicle controller 100.

In addition, when an insulating object is selected to be interposed between the thermal relay 101 and the case 40 to achieve an insulating connection between the two, the insulating object also has a certain heat conduction capability.

Further, in the present embodiment, the multiple thermal relays 101 include at least one upper leg thermal relay 1011 and at least three lower leg thermal relays 1012, at least one upper leg thermal relay 1011 is electrically and jointly connected to the metal back plates 21 of at least three groups of upper leg power tubes 201, and the metal back plates 21 of each group of lower leg power tubes 202 are electrically and thermally connected to at least one lower leg thermal relay 1012.

Specifically, in the embodiment of the present utility model:

1. three groups of upper bridge arm power tubes 201 are configured as A, B, C three-phase upper bridge arm power tubes 201, namely, a group of A-phase upper bridge arm power tubes 2011, a group of B-phase upper bridge arm power tubes 2012 and a group of C-phase upper bridge arm power tubes 2013, wherein the number of each group of A-phase upper bridge arm power tubes 2011, each group of B-phase upper bridge arm power tubes 2012 and each group of C-phase upper bridge arm power tubes 2013 is at least 1;

2. three groups of lower leg power tubes 202 may be configured as A, B, C three-phase lower leg power tubes 202, i.e., as a group of a-phase lower leg power tubes 2021, a group of B-phase lower leg power tubes 2022, and a group of C-phase lower leg power tubes 2023, each group of a-phase lower leg power tubes 2021, each group of B-phase lower leg power tubes 2022, and each group of C-phase lower leg power tubes 2023 being the same in number, at least 1;

3. Of the plurality of thermal relays 101, the thermal relay 101 electrically and thermally connected to the upper arm power transistor 201 is defined as an upper arm thermal relay 1011, and the thermal relay 101 electrically and thermally connected to the lower arm power transistor 202 is defined as a lower arm thermal relay 1012.

Based on the characteristics of the upper bridge arm power tubes 201, the three groups of the upper bridge arm power tubes 201 of A, B, C three phases can share one upper bridge arm heat relay 1011, and can share one upper bridge arm heat relay 1011 in electric heating connection, i.e. can share one upper bridge arm heat relay 1011 in electric conduction and heat conduction, so that the upper bridge arm heat relay 1011 is at least 1, the space occupation is reduced while the material use is saved, and the three groups of the lower bridge arm power tubes 202 of A, B, C three phases need to respectively correspond to the heat relay 101 for heat dissipation, so that the lower bridge arm heat relay 1012 is at least 3, and accurate adaptation is performed.

It will be appreciated that a greater number of upper arm thermal relays 1011 may be provided in conductive thermal connection with one or more groups of upper arm power tubes 201 according to actual requirements.

In the embodiment of the utility model, the power tube 20 is configured as three groups of upper bridge arm power tubes 201 and 202 of A, B, C and A, B, C to realize three-phase output of the electric vehicle controller 100, and based on different functions, the thermal relay 101 is configured as at least one upper bridge arm thermal relay 1011 and at least three lower bridge arm thermal relays 1012 to respectively and rapidly and effectively conduct heat conduction and heat dissipation on at least 6 groups of power tubes 20 such as upper bridge arm power tubes 201 and 202 of A, B, C of A, B, C and the like, so that the operation safety of the electric vehicle controller 100 is ensured, the working reliability is improved, and after the heating problem of the power tube 20 is solved, the output current of the power tube 20 can be improved to increase the output power of the electric vehicle controller 100.

In the embodiment shown in fig. 3 and 10, the number of upper arm thermal relays 1011 is 1, which are electrically and thermally connected to the upper arm power tubes 201 of the three phases A, B, C, the number of lower arm thermal relays 1012 is 3, and the 3 lower arm thermal relays 1012 are divided into a-phase lower arm thermal relay 10121, B-phase lower arm thermal relay 10122 and C-phase lower arm thermal relay 10123, which are electrically and thermally connected to the metal back plates 21 of the a-phase lower arm power tubes 2021, B-phase lower arm power tubes 2022 and C-phase lower arm power tubes 2023, respectively.

In the case where the metal connection member 10 is configured as the negative electrode connection member 102:

in this embodiment, one end of the negative electrode wiring member 102 is electrically connected to the negative electrode copper foil of the circuit board 30, and the other end is connected to the power negative electrode to provide the power negative electrode input of the electric vehicle controller 100.

The back of the circuit board 30 is not provided with components such as a capacitor and a resistor, and the negative electrode wiring member 102 is configured to be located below the circuit board 30, so that the negative electrode wiring member 102 is easier to be close to the circuit board 30 and is fixed with a negative electrode copper foil of the circuit board 30 to form electrical connection, and the problem that the difficulty of fixed connection is increased due to interference with the components such as the capacitor and the resistor when the negative electrode wiring member 102 is located above the circuit board 30 can be avoided. The thermal relay 101 is also provided under the circuit board 30, and the effects due to the positional relationship can be referred to above.

The electrical connection between the negative electrode wiring member 102 and the negative electrode copper foil of the circuit board 30 may be:

1. the negative electrode wiring member 102 is directly contacted and clung to the negative electrode copper foil to realize electrical connection, so that the arrangement of other conductive media can be avoided to simplify the assembly process;

2. the negative electrode connection member 102 may be connected to the negative electrode copper foil through some conductive medium, such as a wire, conductive adhesive or other medium with conductive capability, so as to realize electrical connection, so that the electrical connection between the negative electrode connection member 102 and the negative electrode copper foil is not limited by the position.

In this embodiment, the negative electrode wiring member 102 is in direct contact with the negative copper foil of the circuit board 30 to achieve thermal and electrical connection.

At least one avoidance groove 11 through which other metal connecting pieces 10 can penetrate is formed in at least one metal connecting piece 10, that is, at least one avoidance groove 11 through which a plurality of heat relay bodies 101 can penetrate is formed in the negative electrode wiring piece 102, and/or at least one avoidance groove 11 through which the negative electrode wiring piece 102 and/or other heat relay bodies 101 can penetrate is formed in at least one heat relay body 101, so that the top and the bottom of the integral metal connecting piece 10 are relatively flat, the structure is more stable, the installation of the integral metal connecting piece in the electric vehicle controller 100 is facilitated, and the arrangement of other structures of the electric vehicle 1000 is facilitated.

In this embodiment, dodge groove 11 can be the structural morphology such as groove, breach, recess, is equipped with and dodges other structures can dodge to the structure in groove 11, lets other structures can wear to establish and pass, exemplarily:

1. in the case where the negative electrode terminal 102 is provided with the escape groove 11:

the negative electrode wiring member 102 is retracted into the thermal relay body 101, the thermal relay body 101 can penetrate through the retraction groove 11 and the negative electrode wiring member 102, the part of the thermal relay body 101 penetrating through the retraction groove 11 is in a jogged/laminated/carried matched state with the negative electrode wiring member 102, the thermal relay body 101 does not directly penetrate through the upper part or the lower part of the negative electrode wiring member 102, and the two parts are still on the same horizontal plane; in this way, the distance between the negative electrode tab 102 and the thermal relay 101 can be shortened to promote compactness.

2. As shown in fig. 12, when the thermal relay body 101 is provided with the escape groove 11:

the heat relay body 101 avoids the negative electrode wiring member 102 and/or other heat relay bodies 101, the negative electrode wiring member 102 and/or other heat relay bodies 101 can penetrate through the avoiding groove 11, the other heat relay bodies 101 and/or the part structures of the negative electrode wiring member 102 penetrating through the avoiding groove 11 are in a jogged/laminated/carried matched state with the heat relay body 101, the other heat relay bodies 101 and/or the negative electrode wiring members 102 do not need to directly penetrate through the upper part or the lower part of the heat relay body 101, and the other heat relay bodies 101 and/or the negative electrode wiring members 102 are still on the same horizontal plane;

In this way, the distance between the electric vehicle controller 100 and the negative electrode wire connecting piece 102 and/or other thermal relays 101 can be shortened to improve compactness, and structural stability between the electric vehicle controller 100 and the negative electrode wire connecting piece 102 and/or other thermal relays 101 can be improved, so that shaking of the electric vehicle controller 100 when being impacted is reduced, and one or more avoidance grooves 11 are formed according to the matching condition between the electric vehicle controller 100 and the negative electrode wire connecting piece 102 and/or other thermal relays 101.

3. As shown in fig. 3 and fig. 4, in the case where the avoiding grooves 11 are formed in the negative electrode connection member 102 and the thermal relay body 101, reference may be made to the content of the avoiding grooves 11 formed in the negative electrode connection member 102 and the thermal relay body 101, which is not described herein.

It should be noted that, one or more avoidance grooves 11 may be formed in any suitable position on each thermal relay body 101 of the plurality of thermal relay bodies 101, and any thermal relay body 101 according to actual requirements, so as to ensure structural interaction with other thermal relay bodies 101 and the negative electrode wire member 102.

Further, the structures such as grooves, notches or depressions for avoiding other structures on the negative electrode wire member 102 and the thermal relay body 101 may be understood as avoiding the groove 11, as long as the negative electrode wire member 102 and the thermal relay body 101 can be made flat and compact.

Referring to fig. 1, fig. 2, fig. 8 and fig. 9, the housing 40 in the embodiment of the present utility model includes an upper shell 41 and a lower shell 42 that are detachably disposed in cooperation with each other, and the upper shell 41 and the lower shell 42 may be detachably disposed between them by means of screw fastening, or rivet anchoring, etc., where the upper shell 41 and the lower shell 42 are combined to form an inner space, and the inner components of the electric vehicle controller 100, such as the circuit board 30, the power tube 20, the metal connector 10, etc., are disposed in the inner space, so that the components are prevented from being affected by direct impact and moisture impurities from the outside, and normal use and service life of the inner components are ensured.

Further, the upper case 41 and the lower case 42 may be made of metal or plastic, which has high enough hardness and strength and good ductility, and thus not only can the overall strength of the case 40 be improved, but also the case can be easily manufactured into a designed shape.

And, at least a part of the structure of at least one of the upper case 41 and the lower case 42 is made of metal to satisfy the heat dissipation requirement in insulating thermal connection with the thermal relay 101.

In one embodiment, upper shell 41 is made of plastic and lower shell 42 is made of metal, including but not limited to copper and/or aluminum and/or copper aluminum composites.

In this way, the cost of the electric vehicle controller 100 can be controlled, and the lower shell 42 can be directly used as a heat dissipation medium to be thermally connected with the thermal relay 101, so that a good heat dissipation effect is achieved, and further the operation reliability of the electric vehicle controller 100 is improved.

In yet another embodiment, the upper shell 41 and the lower shell 42 are made of metal, so that the overall structural strength of the housing 40 can be improved, and the upper shell 41 and the lower shell 42 can be thermally connected with the metal connecting piece 10 as a heat dissipation medium, so as to further improve the heat dissipation effect on the power tube 20.

In other embodiments, the upper shell 41 may be made of metal, the lower shell 42 may be made of plastic, or both the upper shell 41 and the lower shell 42 may be made of plastic, but at least part of the structures of both are made of metal to ensure heat dissipation. The benefits of both designs are reasonably expected based on the context of the two examples above.

In a preferred embodiment of the present utility model, the upper case 41 is made of plastic, the lower case 42 is made of metal, and the lower case 42 is thermally connected with the thermal relay 101 in an insulating manner to dissipate heat from the power tube 20 through the lower case 42.

Example two

Referring to fig. 3 and 4 and fig. 10 to 12, further, the metal connector 10 includes a main body 12 and an extension portion 13 extending from the main body 12, and the avoiding groove 11 is disposed on the main body 12 and/or the extension portion 13.

Since the metal connection member 10 is configured as the anode wiring member 102 and the thermal relay body 101, and the anode wiring member 102 and the thermal relay body 101 function differently in the present embodiment, the following will explain specifically the different function of the main body 12 and the extension portion 13 in the anode wiring member 102 from that in the thermal relay body 101:

1. when the metal connector 10 is configured as the negative electrode connector 102, the main body 12 and the extension portion 13 are respectively located at two ends of the negative electrode connector 102, the main body 12 is electrically connected with the negative electrode copper foil of the circuit board 30, the extension portion 13 extends from the main body 12 to be connected with the negative electrode of the power supply so as to form a current path to the circuit board 30, and the arrangement of the main body 12 and the extension portion 13 makes the negative electrode connector 102 easier to connect the negative electrode copper foil of the circuit board 30 with the negative electrode of the power supply.

The avoidance groove 11 is arranged on the main body 12 and/or the extension part 13, so that the thermal relay body 101 can be penetrated at different positions of the negative electrode wiring member 102 according to actual requirements, and the negative electrode wiring member 102 can be more flexibly matched with the thermal relay body 101.

2. When the metal connecting piece 10 is configured as the thermal relay 101, the main body 12 is thermally connected with the metal backboard 21 of the power tube 20, the thickness of the main body 12 is larger than that of the extension part 13, and the extension part 13 is designed to enable the thermal relay 101 to have a certain heat storage and dissipation space, so that the heat storage capacity of the thermal relay 101 is improved, the heat of the power tube 20 can be conducted away more effectively, the electric vehicle controller 100 can be quickly and effectively dissipated, the heat dissipation burden of the electric vehicle controller 100 is reduced, and the normal work of the electric vehicle controller is further ensured.

The avoiding groove 11 is disposed on the main body 12 and/or the extension portion 13, so that the negative electrode wire connecting piece 102 and/or other thermal relay bodies 101 can be arranged at different positions of the thermal relay bodies 101 according to actual requirements, and the thermal relay bodies 101 can be more flexibly matched with the negative electrode wire connecting piece 102 and/or other thermal relay bodies 101.

As shown in fig. 3, one escape groove 11 is provided in the extension 13 of the upper arm thermal relay 1011, and as shown in fig. 3, one escape groove 11 is provided in the main body 12 and the extension 13 of the a-phase lower arm thermal relay 10121.

As shown in fig. 10 to 12, two escape grooves 11 are provided in the extension portion 13 of the upper arm heat relay body 1011, and at this time, the escape grooves 11 pass through the lower arm heat relay body 1012.

In addition, in the present embodiment, the main body 12 is provided with the fixing hole 122, and the fixing hole 122 can be penetrated by a fastener such as a screw, a bolt or a rivet to fix the main body 12 relative to the circuit board 30 and/or fix the main body relative to the metal back plate 21 of the power tube 20, so that the fixing effect of the fastener and the fixing hole 122 is better, the repeatability is higher, and the assembly and the disassembly are convenient.

In other embodiments, the fixing holes 122 may be omitted, and the fixing may be performed by pressing, welding or gluing (such as conductive glue), so that the main body 12 (the negative electrode connector 102) and the negative electrode copper foil are fixedly connected and/or the main body 12 (the thermal relay 101) and the power tube 20 are fixed.

The above manner of fixing the negative electrode copper foil of the negative electrode connector 102 and the circuit board 30, and fixing the heat relay 101 and the metal back plate 21 of the power tube 20 is merely exemplary, and should not be construed as limiting the present utility model, and the connection manner may be reasonably selected on the basis of ensuring effective connection between the above structures.

Example III

With continued reference to fig. 3 and 4 and fig. 10 to 12, further, the metal connector 10 includes a main body 12, an extension portion 13 extending from the main body 12, and a terminal 14 connected to the main body 12 or the extension portion 13, and the avoiding groove 11 is disposed on the terminal 14.

In this embodiment, for the positional relationship, structural features, effects, etc. of the main body 12 and the extension portion 13, reference may be made to the description of the second embodiment, and the description is omitted here. In this embodiment, details concerning the reception of the data 14 will be described.

In this embodiment, the terminals 14 are configured as a power positive/negative terminal and a motor three-phase output terminal 143, wherein the power positive terminal 141 is disposed on the extension portion 13 of the upper bridge arm thermal relay 1011 and is electrically connected with the power positive electrode to implement positive input of the electric vehicle controller 100, the power negative terminal 142 is disposed on the extension portion 13 of the negative terminal 102 and is electrically connected with the power negative electrode to implement negative input of the electric vehicle controller 100, and the motor three-phase output terminal 143 includes an a-phase output terminal 1431, a B-phase output terminal 1432 and a C-phase output terminal 1433, which are respectively disposed on the extension portions 13 of the three lower bridge arm thermal relays 1012 to implement three-phase output of the electric vehicle controller 100 to the three-phase motor 200.

The terminal 14 is connected with the main body 12 or the extension portion 13, and further, the terminal 14 is integrally formed on the main body 12 and/or the extension portion 13, specifically:

1. the terminal 14 is integrally formed on the main body 12, for the metal connector 10 configured as the negative electrode connector 102, the main body 12 can directly realize the electrical connection between the negative electrode of the power supply and the negative copper foil of the circuit board 30, and for the metal connector 10 configured as the thermal relay 101, the main body 12 can directly realize the electrical connection between the terminal 14 and the power tube 20 while realizing heat absorption and heat conduction to the power tube 20;

2. the terminal 14 is integrally formed on the extension portion 13, and the terminal 14 can be located at any feasible position in the electric vehicle controller 100 along with the extension of the extension portion 13 so as to adapt to the design requirement of the internal structure of the electric vehicle controller 100, and the wire connection of the electric vehicle controller 100 is more flexible;

3. the terminal 14 is integrally formed on the main body 12 and the extension portion 13, and at this time, the terminal 14 is located at the connection portion between the main body 12 and the extension portion 13, so as to meet the special connection requirement.

In a preferred embodiment of the utility model, the terminals 14 are integrally formed on the extension 13.

In this embodiment, the avoidance slot 11 may be disposed on any one or more of the positive power terminal 141, the negative power terminal 142, the a-phase output terminal 1431, the B-phase output terminal 1432 and the C-phase output terminal 1433, where the setting of the avoidance slot 11 following the terminal 14 is more flexible and variable, and is easier to adapt to other structures, and when any one or more of the positive power terminal 141, the negative power terminal 142, the a-phase output terminal 1431, the B-phase output terminal 1432 and the C-phase output terminal 1433 extends to any position in the electric vehicle controller 100 along with the extension portion 13, the negative electrode wiring member 102 and/or the thermal relay 101 may be easier to correspondingly penetrate the avoidance slot 11 on the terminal 14 according to the actual structural design requirement.

As shown in fig. 3 and 4, one avoidance groove 11 is provided on the positive terminal 141 of the power supply, the negative terminal 102 is penetrated through the avoidance groove 11, and the upper arm thermal relay 1011 is avoided from the negative terminal 102.

More specifically, in fig. 3, one avoidance groove 11 is formed in the extension portion 13 of the upper arm thermal relay 1011, the avoidance groove 11 is formed in the main body 12 of the negative electrode terminal member 102, one avoidance groove 11 is formed in the main body 12 and the heat absorbing portion of the lower arm thermal relay 10121 of the a phase, the avoidance groove 11 is formed in the extension portion 13 of the negative electrode terminal member 102, and simultaneously, the avoidance groove 11 is also formed in the negative electrode terminal member 102, the avoidance groove 11 is formed in the main body 12 and the extension portion 13 of the lower arm thermal relay 10121 of the a phase, so that the compactness between the negative electrode terminal member 102 and the lower arm thermal relay 10121 of the a phase is improved, and the stability is also better.

Referring to fig. 12, in still another example, a relief groove 11 is provided at the bottom of the C-phase output end 1433, where the relief groove 11 is configured to relief the extension 13 of the negative electrode wire member 102, so that the bottom surface of the negative electrode wire member 102 is relatively flush with the bottom surface of the C-phase lower arm thermal relay 10123.

Example IV

Further, the body 12 is integrally formed with the terminal 14, or the extension 13 is integrally formed with the terminal 14, or the body 12, the extension 13 and the terminal 14 are integrally formed.

That is, the terminal 14 is integrally formed with the body 12 and/or the extension 13, specifically:

1. the main body 12 and the wiring terminal 14 are integrally formed, namely, the wiring terminal 14 is arranged on the main body 12, and the main body 12 can directly realize the electrical connection between the wiring terminal 14 and the power tube 20 while realizing heat absorption and heat conduction to the power tube 20;

2. the extension part 13 and the terminal 14 are integrally formed, i.e. the terminal 14 is arranged on the extension part 13, and the terminal 14 can be positioned at any feasible position in the electric vehicle controller 100 along with the extension of the extension part 13 so as to adapt to the design requirement of the internal structure of the electric vehicle controller 100 and enable the connection of the electric vehicle controller 100 with the power supply and/or the three-phase motor 200 to be more flexible;

3. the main body 12, the extension portion 13 and the terminal 14 are integrally formed, that is, the terminal 14 may be disposed on the main body 12 and/or the extension portion 13, and the terminal 14 is disposed on the main body 12 and the extension portion 13 in the special case that the terminal 14 is disposed at the connection position between the main body 12 and the extension portion 13, so as to meet the special position requirement and the connection requirement.

Thus, the manufacturing process of the metal connector 10 can be simplified, and the two parts do not need to be connected after being manufactured respectively, so that the manufacturing process is simplified. Meanwhile, the two parts are integrally formed, so that the extension part 13 is not required to be installed later, the manual installation cost is saved, and the production efficiency is improved.

In a preferred embodiment of the present utility model, the body 12, the extension 13 and the terminal 14 are integrally formed, and the terminal 14 is disposed on the extension 13.

The main body 12, the extension portion 13 and the terminal 14 can be manufactured together by adopting a casting process, so that the extension portion 13 can be bent relative to the main body 12 to increase the extension length of the extension portion 13 in the effective space of the electric vehicle controller 100, thereby increasing the heat dissipation area, and meanwhile, the terminal 14 can be flexibly arranged at any reasonable position in the electric vehicle controller 100 along with the extension of the extension portion 13.

Example five

Referring to fig. 2 to 4 and fig. 9 to 12, further, the main body 12 has a heat absorbing surface 121 thermally connected to the metal back plate 21 of the power tube 20, and the main body 12 and/or the extension 13 has a heat transfer surface 15 thermally connected to the housing 40 in an insulating manner.

Specifically, the heat absorbing surface 121 is a surface of the main body 12 and is thermally connected with the metal back plate 21 of the power tube 20, so that heat from the power tube 20 can be absorbed to conduct heat conduction and dissipation to the power tube 20, and the heat absorbing surface 121 is in surface contact with the metal back plate 21, so that stability of thermal connection can be ensured, and meanwhile, a thermal contact area is increased to enhance heat absorption and conduction effects.

The heat transfer surface 15 is a surface of the main body 12 and/or the extension portion 13 and is thermally connected with the housing 40 in an insulating manner, and is in stable surface contact with the housing 40, so that heat absorbed by the heat absorbing surface 121 from the power tube 20 can be conducted to the housing 40 in a large area, and heat generated in the electric vehicle controller 100 can be conducted to the outside, thereby realizing effective heat dissipation. The heat relay body 101 achieves effective heat dissipation of the power tube 20 through the absorption and conduction of heat by the heat absorbing surface 121 and the heat transferring surface 15, respectively.

Further, in the present embodiment, the heat absorbing surface 121 is electrically and thermally connected to the metal back plate 21 of the power tube 20, and any surface of the main body 12 electrically and thermally connected to the metal back plate 21 of the power tube 20 can be understood as the heat absorbing surface 121, by way of example:

if the top surface of the main body 12 is electrically and thermally connected to the back surface of the metal back plate 21 of the power tube 20, the heat absorbing surface 121 is the top surface of the main body 12; if the bottom surface of the main body 12 is electrically and thermally connected to the back surface of the metal back plate 21 of the power tube 20, the heat absorbing surface 121 is the bottom surface of the main body 12; if the side surface of the main body 12 is electrically and thermally connected to the back surface of the metal back plate 21 of the power tube 20, the heat absorbing surface 121 is the side surface of the main body 12.

In this embodiment, the top surface of the main body 12 contacts with the back surface of the metal back plate 21 of the power tube 20, i.e. the heat absorbing surface 121 is the top surface of the main body 12, so that the heat relay body 101 is conveniently arranged below the circuit board 30, thereby avoiding the heat relay body 101 from affecting the arrangement of other components on the circuit board 30 and avoiding the occupation of the heat relay body 101 to the upper space of the circuit board 30.

When the heat absorbing surface 121 absorbs the heat generated by the power tube 20 through the back surface of the metal back plate 21 and then is conducted to the main body 12, the heat is conducted to the extension portion 13 and distributed between the main body 12 and the extension portion 13, and the heat is outputted to the housing 40 through the heat transfer surface 15 on the back surface of the thermal relay 101 in a large area, so that a heat conduction path of the power tube 20 (metal back plate 21) -the heat absorbing surface 121-the main body 12-the extension portion 13-the heat transfer surface 15-the housing 40 is formed, and the circuit board 30 is rapidly conducted and dissipated, so that the normal operation of the electric vehicle controller 100 and the circuit board is ensured.

In the embodiment of the present utility model, the back surface of the metal back plate 21 of the power tube 20 may be substantially rectangular, that is, the contact surface between the back surface of the metal back plate 21 and the main body 12 is substantially rectangular, and the shape of the heat absorbing surface 121 may be adapted to the shape of the back surface of the metal back plate 21 and be disposed coplanar with the two, so that the heat absorbing surface 121 completely covers the back surface of the metal back plate 21, thereby improving the thermal contact area between the two, forming good conductive thermal connection between the two, and improving the thermal conduction effect.

Of course, in other embodiments, the back surface of the metal back plate 21 and the heat absorbing surface 121 are not limited to the horizontal plane, and may be specifically disposed in a specific embodiment.

In the embodiment of the present utility model, the back surface of the thermal relay body 101 is electrically and thermally connected with the housing 40 in an insulating manner, that is, the heat transfer surface 15 may be equal to the back surface (the front surface is the surface on which the main body 12 is disposed) of the thermal relay body 101, and the heat transfer surface 15 and the housing 40 form surface contact, so as to ensure a thermal contact area therebetween, and ensure a conductive effect and a thermal conduction effect.

The insulating thermal connection is understood to be firstly insulating and nonconductive between the thermal relay 101 and the housing 40, so as to avoid short circuit or other damage caused by current transmission of the power tube 20 to the housing 40, insulation between the thermal relay 101 and/or the housing 40 can be realized by coating an insulating coating or insulating an object at intervals, and the housing 40 also has a certain heat conduction capability, so that heat dissipation of the electric vehicle controller 100 can be realized on the premise of ensuring electrical safety of the electric vehicle controller 100 in insulating contact with the thermal relay 101.

In addition, when an insulating object is selected to be interposed between the thermal relay 101 and the case 40 to achieve an insulating connection between the two, the insulating object also has a certain heat conduction capability.

The heat transfer surface 15 in the embodiment of the utility model is distributed on the main body 12 and/or the extension 13, specifically:

1. the heat transfer surface 15 is distributed on the main body 12, that is, the heat transfer surface 15 is the bottom surface of the main body 12, which is opposite to the heat absorbing surface 121, and the main body 12 is in insulating thermal connection with the housing 40, but the extension part 13 is not in insulating thermal connection with the housing 40, and the main body 12 directly conducts heat to the heat transfer surface 15 to be output to the housing 40 after absorbing the heat through the heat absorbing surface 121, at this time, the heat transmission path is shortest;

2. the heat transfer surfaces 15 are distributed on the extension portion 13, and at this time, the extension portion 13 is in insulating thermal connection with the housing 40, but the main body 12 is not in insulating thermal connection with the housing 40, and the heat absorption surface 121 of the main body 12 absorbs heat from the power tube 20, then conducts to the extension portion 13, and then conducts to the housing 40 through the heat transfer surface 15 at the bottom of the extension portion 13;

3. the heat transfer surface 15 is distributed on the main body 12 and the extension portion 13, and at this time, the entire bottom surface of the thermal relay body 101 is in insulating thermal connection with the housing 40, that is, both the main body 12 and the extension portion 13 are in contact with the housing 40, so that a larger thermal contact area is provided, and a better heat transfer effect is achieved.

In a preferred embodiment of the present utility model, the heat transfer surface 15 is distributed on the main body 12 and the extension portion 13, that is, the heat transfer surface 15 is the entire bottom surface of the heat relay body 101, so as to ensure the heat transfer area. And, the heat transfer surface 15 on each thermal relay body 101 is on the same horizontal plane, so that each thermal relay body 101 forms stable surface contact with the shell 40, forms a heat transfer plane with a large area relative to the shell 40, and ensures the smoothness and stability of each thermal relay body 101.

It should be noted that, since the heat conduction effect of the negative electrode connection member 102 on the circuit board 30 is limited, the heat conduction effect of the heat conduction surface 15 in this embodiment mainly refers to the heat conduction effect of the bottom surface of the heat relay body 101, and is the heat conduction effect of the power tube 20. Also, when referring to the structure of the heat transfer surface 15, it is also mainly referred to as the bottom surface of the heat relay body 101, that is, the heat transfer surface 15 is mainly referred to as the structure on the heat relay body 101.

In addition, although the heat transfer surface 15 is not shown in fig. 3 and 4 due to the view angle, it should be clear to those skilled in the art from the text description of the present embodiment and the structures shown in fig. 3 and 4 that the heat transfer surface 15 also refers to the bottom surface of the heat relay body 101 in fig. 3 and 4, and not only the surface indicated in fig. 11 is the heat transfer surface 15.

Further, as shown in fig. 9, in one embodiment of the present utility model, the electric vehicle controller 100 may further include an insulating film 50 provided between the metal connector 10 and the housing 40 (lower case 42).

The insulating film 50 may be a sheet-like body made of an insulating thermal interface material such as a silicon wafer, an imine film, an insulating cloth, a high thermal conductivity interface material, etc., and the upper surface of the insulating film is in contact and close contact with the back surface of the thermal relay body 101 to form an insulating thermal connection, so as to ensure a larger insulating thermal contact area, at this time, the thermal relay body 101 absorbs heat generated by the power tube 20 from the metal back plate 21 and then conducts the heat to the insulating film 50, and the lower surface of the insulating film 50 is in contact and close contact with the lower shell 42 to form an insulating thermal connection so as to output the heat to the lower shell 42 and radiate the heat to the outside.

In this embodiment, the insulating film 50 is used as a conducting medium to realize insulating thermal connection between the thermal relay 101 and the lower shell 42, so as to form a heat dissipation path between the power tube 20 and the metal back plate 21 and between the thermal relay 101 and the insulating film 50 and between the thermal relay 50 and the lower shell 42, thereby realizing the purpose of rapidly dissipating heat of the power tube 20 through the shell 40 and ensuring normal operation of the power tube 20 and the electric vehicle controller 100.

In one embodiment, the volume of the insulating film 50 is much larger than the volume of the thermal relay 101, and covers the entire inner surface of the lower case 42, so that even when the thermal conductivity of the insulating film 50 is not high, it can fully absorb the heat conducted by the thermal relay 101, and then fully output the heat from the lower case 42 to the outside of the electric vehicle controller 100, thereby ensuring a better heat dissipation effect.

Of course, the insulating film 50 is also abutted against the bottom surface of the negative electrode wiring member 102 to realize insulating thermal connection, so that heat generated by the power negative electrode and/or the circuit board 30 can be conducted to the housing 40 on the premise of ensuring mutual insulation between the negative electrode wiring member 102 and the housing 40, and the heat dissipation effect of the electric vehicle controller 100 is further improved.

Example six

Further, the heat absorbing surface 121 and the power tube 20 mounted thereon form a thermal connection surface, the area of the heat absorbing surface 121 is greater than or equal to the area of the thermal connection surface, and the extension portion 13 is at least partially located outside the forward projection area of the four vertical surfaces of the thermal connection surface.

Specifically, since the heat absorbing surface 121 is thermally connected to the back surface of the metal back plate 21 of the power tube 20 in this embodiment, the heat absorbing surface 121 is in contact with the back surface of the metal back plate 21, and the heat generated by the operation of the power tube 20 is conducted to the main body 12 and the thermal relay 101 through the thermal connection surface.

The area of the heat absorbing surface 121 is greater than or equal to the area of the thermal connection surface, which can be understood that the area of the heat absorbing surface 121 is greater than or equal to the area of the back surface of the metal back plate 21, so that the heat absorbing surface 121 can completely cover the back surface of the metal back plate 21, and the thermal contact area between the power tube 20 and the thermal relay 101 is ensured, and even if the power tube 20 deviates to a certain extent from the thermal relay 101, a larger contact proportion can be ensured and efficient heat conduction is ensured based on the area-size relationship between the heat absorbing surface 121 and the thermal connection surface.

In one embodiment, the back surface of the metal back plate 21 of the power tube 20 may be substantially rectangular, and the thermal connection surface between the metal back plate 21 and the heat absorbing surface 121 may also be substantially rectangular, so as to facilitate alignment and adaptation between the main body 12 and the metal back plate 21 of the power tube 20, and between the heat absorbing surface 121 and the back surface of the metal back plate 21, thereby ensuring a better heat conduction effect.

In this embodiment, the extension portion 13 is at least partially located outside the orthographic projection area of the four vertical cross sections of the thermal connection surface, so that on one hand, the heat dissipation area can be increased to improve the heat dissipation performance of the power tube 20, and on the other hand, the arrangement mode of the extension portion 13 can make the arrangement mode of the terminal 14 of the electric vehicle controller 100 more flexible, and only the extension direction and the extension form of the extension portion 13 need to be changed to enable the terminal 14 to be arranged at any position.

It should be noted that, as shown in fig. 13, since the thermal connection surface is a rectangular plane, in the present utility model, "four vertical sections of the thermal connection surface" may be understood as four planes formed by extending four edges of the thermal connection surface perpendicular to the direction of the thermal connection surface, "the extension portion 13 is located at least partially outside the orthographic projection area of the four vertical sections of the thermal connection surface" may be understood as an orthographic projection of the extension portion 13 on the four vertical sections is located at least partially outside the corresponding vertical sections, that is, the extension portion 13 is located at least partially outside the hatched portion shown in fig. 13.

Of course, it will be appreciated that in some embodiments, the extension 13 may also be located at least partially within the forward projection areas of the four vertical cross-sections of the thermal interface.

Example seven

Referring to fig. 11 and 12, further, the escape groove 11 is formed by recessing the heat transfer surface 15 toward the side of the metal connection member 10 facing away from the heat transfer surface 15.

Since all the heat transfer surfaces 15 are located on the same horizontal plane in this embodiment, when the avoiding groove 11 is formed by recessing the heat transfer surface 15 toward the side of the metal connector 10 away from the heat transfer surface 15, it is ensured that each thermal relay 101 is completely and properly matched with each other when the stack passes through the other thermal relay 101, and stability and compactness of the structure are improved.

In addition, when the avoiding groove 11 is formed in the thermal relay body 101, the avoiding groove 11 and the other thermal relay bodies 101 cannot be tightly combined due to the accuracy problem, and the plurality of thermal relay bodies 101 cannot be tightly integrated, so that the compactness and the structural stability are adversely affected.

And, the avoidance groove 11 is also simpler and easier to realize by directly processing the heat transfer surface 15.

It should be noted that, although fig. 3 and fig. 4 do not show the heat transfer surface 15, the technical effect of "the avoiding groove 11 is formed by recessing the heat transfer surface 15 toward the side of the metal connecting member 10 away from the heat transfer surface 15" can be achieved in the embodiment shown in fig. 3 and fig. 4, and the description thereof is omitted here.

Example eight

Still further, the metal connector 10 is aluminum, copper or a copper aluminum composite.

That is, the negative electrode wiring member 102 and the thermal relay 101 are aluminum, copper or copper-aluminum conforming members, and the copper and aluminum materials have better electrical conductivity to ensure electrical connection with the metal back plate 21 of the negative electrode copper foil/power tube 20, and have better thermal conductivity, so that the heat dissipation effect of the electric vehicle controller 100 can be improved.

In the present embodiment, the metal connector 10 is preferably made of aluminum, which is relatively inexpensive, and the production cost of the metal connector 10 can be controlled to further control the production cost of the electric vehicle controller 100.

Of course, in other embodiments, the metal connector 10 may be made of other metal materials, and may be specifically selected on the premise of ensuring the electrical and thermal conductivity.

Based on the material characteristics and the structural characteristics of the metal connecting piece 10, the main body 12 and the extension part 13 and/or the main body 12, the extension part 13 and the wiring terminal 14 can be integrally formed by adopting a die casting aluminum process, so that the structural strength of the metal connecting piece 10 can be effectively improved, the step of manual assembly can be reduced, and the production cost can be effectively reduced.

Example nine

Referring to fig. 14, an electric vehicle 1000 of the present utility model includes:

A three-phase motor 200; and

according to any one of the above electric vehicle controllers 100, the three-phase line interface of the three-phase motor 200 is electrically connected to the three-phase output of the electric vehicle controller 100.

The electric vehicle 1000 of the present utility model includes an electric vehicle controller 100, in the electric vehicle controller 100, at least one avoidance groove 11 through which other metal connectors 10 penetrate is provided on at least one of a plurality of metal connectors 10, so that when conducting and radiating heat and/or realizing power supply input to a plurality of power tubes 20, the plurality of metal connectors 10 do not directly span, simply stack or avoid other metal connectors 10, but can be penetrated by other metal connectors 10, so as to keep the internal compactness and integration of the electric vehicle controller 100, and further control the volume of the electric vehicle controller 100.

The three-phase line interfaces of the three-phase motor 200 may include an a-phase line interface, a B-phase line interface, and a C-phase line interface, and the three-phase output ends of the electric vehicle controller 100 include an a-phase output end 1431, a B-phase output end 1432, and a C-phase output end 1433, that is, the a-phase connection terminal 14, the B-phase connection terminal 14, and the C-phase connection terminal 14 above, which are electrically connected with the three-phase line interfaces of the three-phase motor 200 in a one-to-one correspondence, so as to control the three-phase motor 200.

In the description of the present specification, the descriptions of the terms "embodiment one", "embodiment two", and the like, mean 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 do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (9)

1. An electric vehicle controller, comprising:

a housing;

a circuit board disposed in the housing;

a plurality of power tubes welded on the circuit board; and

the metal connecting pieces are provided with at least one avoidance groove for other metal connecting pieces to pass through;

The plurality of metal connectors are configured as a negative electrode wiring member electrically connected with the circuit board, and at least four thermal relays connected with the metal back plate of the power tube.

2. The electric vehicle controller of claim 1, wherein the metal connection comprises:

a main body; and

an extension formed to extend from the body;

the avoidance groove is arranged on the main body and/or the extension part.

3. The electric vehicle controller of claim 1, wherein the metal connection comprises:

a main body;

an extension formed to extend from the body; and

and the wire terminal is connected with the main body or the extension part, and the avoidance groove is arranged on the wire terminal.

4. The electric vehicle controller of claim 3, wherein the body is integrally formed with the terminal; or (b)

The extension part and the wiring terminal are integrally formed; or (b)

The body, the extension and the terminal are integrally formed.

5. The electric vehicle controller of claim 2 or 3, wherein the body has a heat absorbing surface thermally connected to a metal back plate of the power tube;

the body and/or the extension has a heat transfer surface in insulating thermal connection with the housing.

6. The electric vehicle controller of claim 5, wherein the heat absorbing surface forms a thermal connection surface with the power tube mounted thereon;

the area of the heat absorbing surface is larger than or equal to the area of the thermal connecting surface;

the extension is located at least partially outside the forward projection area of the four perpendicular faces of the thermal connection face.

7. The electric vehicle controller of claim 5, wherein the relief groove is formed by a recess in a side of the heat transfer surface facing away from the heat transfer surface of the metal connector.

8. The electric vehicle controller of claim 1, wherein the metal connection is aluminum, copper, or a copper aluminum composite.

9. An electric vehicle, comprising:

a three-phase motor; and

the electric vehicle controller of any of claims 1-8, the three-phase wire interface of the three-phase motor electrically connected to a three-phase output of the electric vehicle controller.

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