CN220173672U - Vehicle-mounted power supply and vehicle - Google Patents

Abstract

The embodiment of the utility model provides a vehicle-mounted power supply and a vehicle, wherein the vehicle-mounted power supply comprises a bottom plate, and a supporting surface is arranged on the bottom plate; the water channel plate is arranged on the bottom plate and is provided with a heat exchange surface; the first power assembly comprises a first substrate and a plurality of first power devices, the first side surface is connected to the heat exchange surface, and the plurality of first power devices are arranged on the second side surface. The bottom surface of part of the substrate is contacted with the supporting surface, so that the contact area between the first substrate and the supporting surface can be reduced, the first substrate is tightly attached to the heat exchange surface, and the heat exchange efficiency of the water channel plate to the first power assembly is improved.

Description

Vehicle-mounted power supply and vehicle

Technical Field

The utility model belongs to the technical field of vehicle body electric control, and particularly relates to a vehicle-mounted power supply and a vehicle.

Background

With the continuous development of the automobile industry, the size of devices in the automobile is also made smaller and smaller, so that the integration level of the devices in the automobile is higher and higher.

Taking a three-dimensional installation circuit board as an example, the arrangement of the three-dimensional installation circuit board in the automobile can fully utilize the space in the vertical direction in the automobile; but the circuit board in the existing three-dimensional installation circuit board can generate much heat during operation, the heat dissipation effect on the circuit board in the traditional three-dimensional installation circuit board is lower, and the operation stability and the service life of the three-dimensional installation circuit board are reduced.

Disclosure of Invention

An object of the present utility model is to provide a new solution for a vehicle-mounted power supply and a vehicle.

According to a first aspect of the present utility model, there is provided an in-vehicle power supply comprising:

the bottom plate is provided with a supporting surface;

a waterway plate disposed on the base plate, the waterway plate having a heat exchange surface;

the first power assembly comprises a first substrate and a plurality of first power devices, the first substrate is provided with a first side surface, a second side surface and a substrate bottom surface, the first side surface is connected to the heat exchange surface, and the plurality of first power devices are arranged on the second side surface;

wherein, part of the bottom surface of the substrate is contacted with the supporting surface.

Optionally, a protrusion is provided on the bottom plate, and the protrusion is provided with the supporting surface.

Optionally, the protrusion is further provided with a first side surface and a second side surface which are positioned on two sides of the supporting surface, and the first side surface and the second side surface are perpendicular to the first side surface;

wherein a ratio of the size of the support surface to the size of the substrate bottom surface in the intersecting line direction of the first side surface and the substrate bottom surface is in a range of (1:20) - (1:5).

Optionally, the bottom plate is provided with at least two supporting surfaces, and the two supporting surfaces are respectively supported on two sides of the bottom surface of the substrate.

Optionally, the bottom plate is provided with at least three supporting surfaces, and the three supporting surfaces are respectively supported at two sides and the middle position of the bottom surface of the substrate.

Optionally, a groove is formed on the bottom plate, and the bottom surface of the groove is configured to form the supporting surface;

the bottom surface of the substrate comprises a first surface and a second surface, the first surface is separated from the supporting surface, and the second surface is contacted with the supporting surface.

Optionally, an upper end face is further disposed on the protrusion, the first substrate further has a substrate top surface far away from the substrate bottom surface and parallel to the substrate bottom surface, and in a direction perpendicular to the substrate bottom surface, the upper end face is closer to the substrate top surface than the supporting surface.

Optionally, a heat conductive silicone grease is disposed between the first side surface and the heat exchanging surface.

Optionally, the roughness of the upper end surface is greater than the roughness of the support surface.

Optionally, the flatness of the support surface is less than 0.1mm.

Optionally, the power device further comprises an elastic piece, one end of the elastic piece is in pressure connection with the first power assembly, and the other end of the elastic piece is connected to the bottom plate.

Optionally, the elastic member includes a first connection piece and a second connection piece connected to each other, the first connection piece is obliquely crimped to the first power component, and the second connection piece is connected to the base plate.

Optionally, further comprising a connection structure;

the other end of the elastic piece is connected to the bottom plate through the connecting structure.

Optionally, the connecting structure is a connecting column, an axis of the connecting column is perpendicular to the supporting surface, and the other end of the elastic element is fixed on the connecting column.

Optionally, the connecting device further comprises a connecting plate, the connecting posts comprise a plurality of connecting posts, the connecting posts are sequentially arranged at intervals along a first direction, the first direction is parallel to the first side surface and parallel to the supporting surface, and the connecting plate is connected with the connecting posts.

Optionally, a protrusion is arranged on the bottom plate, the protrusion is provided with the supporting surface, and the protrusion is arranged between the connecting plate and the water channel plate.

Optionally, the connecting plate is disposed on a side of the connecting post away from the first substrate.

Optionally, a distance between the connection plate and the first substrate is equal to a distance between a central axis of the connection post and the first substrate.

Optionally, the power device further comprises an insulating sheet, and the insulating sheet is arranged between the first power device and one end of the elastic piece.

Optionally, in a direction perpendicular to the supporting surface, one end of the elastic member is disposed adjacent to a middle position of the first substrate.

Optionally, the device further comprises a second power component, wherein the second power component is arranged at intervals with the first power component, the second power component is provided with a second substrate, and the second substrate is supported on the supporting surface.

Optionally, the projection of the water channel plate on the bottom plate is annular or U-shaped, the periphery side of the water channel plate is configured as the heat exchange surface, and the second power components and the first power components are distributed on the periphery side of the water channel plate at intervals.

Optionally, a circuit board is also included;

the circuit board is perpendicular to the first substrate, a connecting plug is arranged on the first substrate, a jack is arranged on the circuit board, and the connecting plug is inserted into the jack.

Optionally, the first power device is a patch MOS transistor.

According to a second aspect of the present utility model there is provided a vehicle comprising said on-board power supply.

The utility model has the technical effects that:

the embodiment of the utility model provides a vehicle-mounted power supply, which comprises a bottom plate, wherein a supporting surface is arranged on the bottom plate; a waterway plate disposed on the base plate, the waterway plate having a heat exchange surface; the first power assembly comprises a first substrate and a plurality of first power devices, the first side surface is connected to the heat exchange surface, and the plurality of first power devices are arranged on the second side surface. The bottom surface of part of the substrate is contacted with the supporting surface, so that the contact area between the first substrate and the supporting surface can be reduced, the first substrate is tightly attached to the heat exchange surface, and the heat exchange efficiency of the water channel plate to the first power assembly is improved.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a partial perspective view (excluding a first power component) of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 2 is a partial perspective view of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 3 is a side view I of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 4 is a perspective view of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 5 is a second side view of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 6 is a split schematic diagram of a first power component of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 7 is a perspective view of a first power module (excluding an insulating sheet) of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 8 is a perspective view of a first power component of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 9 is a schematic partial view of a first power component of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 10 is a second perspective view of a vehicle-mounted power supply according to an embodiment of the present utility model;

fig. 11 is a side view of another vehicle-mounted power supply according to an embodiment of the present utility model.

Wherein:

1. a case; 11. a bottom plate; 111. a mounting surface; 112. a groove; 12. a side plate; 13. a protrusion; 131. a support surface; 132. a first side; 133. a second side; 134. an upper end surface; 2. a waterway plate; 21. a heat exchange surface; 22. a flow passage; 3. a first power component; 31. a first substrate; 311. a first substrate layer; 312. a first insulating layer; 313. a first circuit layer; 314. a connection plug; 315. a first side surface; 316. a second side surface; 317. a bottom surface of the substrate; 3171. a first face; 3172. a second face; 318. a top surface of the substrate; 32. a first power device; 33. an insulating sheet; 8. a circuit board; 81. a jack; 4. a stop assembly; 41. a connecting plate; 42. an elastic member; 43. a connection structure;

7. a second power component; 71. and a second substrate.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

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.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to fig. 1 to 2, an embodiment of the present utility model provides a vehicle-mounted power supply including:

a bottom plate 11, wherein a supporting surface 131 is arranged on the bottom plate 11;

a waterway plate 2, the waterway plate 2 being disposed on the base plate 11, and the waterway plate 2 having a heat exchange surface 21;

a first power assembly 3, the first power assembly 3 comprising a first substrate 31 and a plurality of first power devices 32, the first substrate 31 having a first side surface 315, a second side surface 316, and a substrate bottom surface 317;

one side surface of the first substrate 31 is connected to the heat exchange surface 21, a plurality of the first power devices 32 are connected to a side of the first substrate 31 away from the heat exchange surface 21, specifically, the first side surface 315 is connected to the heat exchange surface 21, and a plurality of the first power devices 32 are disposed on the second side surface 316;

wherein a portion of the substrate bottom surface 317 is in contact with the support surface 131.

When the first substrate 31 is mounted, a part of the substrate bottom surface 317 is in contact with the supporting surface 131 so that the supporting surface 131 supports the first substrate 31; part base plate bottom surface 317 butt extremely on the holding surface 131, can be guaranteeing on the holding surface 131 is right on first base plate 31 plays better supporting role basis, reduce first base plate 31 with area of contact between the holding surface reduces the frictional force when assembling between first base plate 31 with the holding surface 131, and then can make first base plate 31 with the heat transfer face 21 laminating is tighter, has improved water course board 2 is right the heat transfer efficiency of first power module 3 has guaranteed vehicle-mounted power supply's reliability.

In some embodiments, the vehicle-mounted power supply includes a box 1, where the box 1 may further include a side plate 12, where the side plate is disposed on the bottom plate, and the bottom plate 11 and the side plate 12 enclose a receiving cavity, for example, the side plate 12 is connected to a peripheral side of the bottom plate 11 and encloses the receiving cavity with the bottom plate 11; the side plate has an inner wall surface, the bottom plate 11 has at least one mounting surface 111, and the inner wall surface and the mounting surface constitute at least a part of a cavity wall of the accommodating cavity; the supporting surface of the protrusion protrudes from the mounting surface.

In some embodiments, a protrusion 13 is provided on the base plate 11, the protrusion 13 having the supporting surface 131, and the protrusion 13 being located in the receiving cavity.

The supporting surface 131 of the protrusion 13 may limit the installation position of the first power module 3 in the height direction when supporting the first substrate 31 of the first power module 3, so as to perform a positioning function on the first power module 3.

In some embodiments, the case 1 may be made of a metal material with good heat conductivity, such as aluminum alloy or copper, so as to improve the heat dissipation efficiency of the vehicle-mounted power supply.

In some embodiments, referring to fig. 6, the first substrate 31 includes a first substrate layer 311, a first insulating layer 312, and a first circuit layer 313 sequentially attached, and a plurality of the first power devices 32 are connected to a side of the first circuit layer 313 away from the first insulating layer 312.

In some embodiments, the plurality of first power devices 32 may be arranged in a rectangular array or a triangular array on the surface of the first circuit layer 313, for example, six first power devices 32 form two rows on the surface of the first circuit layer 313, and each row includes three first power devices 32 disposed at equal intervals.

In some embodiments, the first substrate layer 311 may be a metal plate with a relatively good thermal conductivity, such as an aluminum plate or a copper plate, the first insulating layer 312 may be a sheet with insulation and thermal conductivity, such as a ceramic sheet or a thermal conductive film, and the first circuit layer 313 may be a printed circuit board, so that the first substrate 31 is connected to various devices through the first circuit layer 313.

In some embodiments, referring to fig. 1, the base plate is provided with a protrusion 13 having the support surface thereon. For example, the protrusion 13 may be a protrusion protruding from the bottom plate 11, the substrate bottom surface 317 and the supporting surface 131 are directly attached, and the supporting surface 131 is perpendicular to the first side surface 315.

In some embodiments, when the protrusion 13 protrudes from the base plate 11, that is, the supporting surface 131 of the protrusion 13 is higher than the mounting surface 111 of the base plate 11, such that the supporting surface of the protrusion 13 is closer to the first power component 3 than the mounting surface 111 of the base plate 11, the supporting surface of the protrusion 13 is convenient for abutting and supporting the substrate bottom surface 317 of the first substrate 31.

And the supporting surface 131 is perpendicular to the first side surface 315, so that the first substrate 31 can be vertically supported in the accommodating cavity, and the space utilization rate of the vehicle-mounted power supply in the vertical direction is improved.

In some embodiments, the upper surface further has a first side 132 and a second side 133 on opposite sides of the support surface 131, the first side 132 and the second side 133 being perpendicular to the first side surface 315;

wherein a ratio of the size of the support surface 131 to the size of the substrate bottom surface 317 in the intersecting line direction of the first side surface 315 and the substrate bottom surface 317 is in a range of (1:20) - (1:5).

In some embodiments, the bottom plate 11 is provided with a plurality of supporting surfaces side by side, and the supporting surfaces of the plurality of supporting surfaces are flush and together supported on the substrate bottom surface 317 of the first substrate 31.

For example, the bottom plate is provided with a plurality of protrusions 13 side by side, and the protrusions 13 provided side by side have a plurality of support surfaces provided side by side.

The stability of the first power component 3 in the accommodating cavity is improved by the arrangement of the plurality of supporting surfaces, meanwhile, the plurality of supporting surfaces are distributed at intervals, in the intersecting line direction of the first side surface 315 and the substrate bottom surface 317, the size of the supporting surface 131 can be controlled within the range of 2mm-5mm, the size of the substrate bottom surface 317 is controlled within the range of 40-100mm, the transverse resistance of the first substrate 31 during installation can be reduced, and the installation accuracy of the first power component 3 is ensured.

In some embodiments, at least two supporting surfaces 131 are disposed on the bottom plate 11, and the two supporting surfaces 131 are respectively supported on two sides of the bottom surface 317 of the substrate.

In some embodiments, referring to fig. 2, the substrate bottom surface 317 extends in the intersecting line direction of the first side surface 315 and the substrate bottom surface 317, when two raised supporting surfaces 131 are correspondingly disposed on two sides of the substrate bottom surface 317 in this direction, the two raised supporting surfaces 131 are respectively supported on two sides of the substrate bottom surface 317, so as to ensure balance of the first substrate 31.

In some embodiments, at least three supporting surfaces 131 are disposed on the bottom plate 11, and the three supporting surfaces 131 are respectively supported on two sides and a middle position of the bottom surface 317 of the substrate.

In some embodiments, the three supporting surfaces 131 may be disposed at equal intervals along the intersecting line direction of the first side surface 315 and the substrate bottom surface 317, and the two supporting surfaces 131 at two ends are disposed corresponding to two sides of the substrate bottom surface 317, for example, the two supporting surfaces 131 at two ends are respectively supported at two side edges of the substrate bottom surface 317, and the middle supporting surface 131 is disposed corresponding to a middle position of the substrate bottom surface 317, for example, the middle supporting surface 131 is supported at a middle of the substrate bottom surface 317, so as to improve the reliability of supporting the first substrate 31 by the protrusion 13.

In some embodiments, at least four supporting surfaces 131 are disposed on the bottom plate 11, wherein three supporting surfaces 131 are respectively supported on two sides and a middle position of the bottom surface 317 of the substrate.

In some embodiments, among the at least four support surfaces 131, three support surfaces 131 may be two end protrusions and one middle protrusion, respectively, two end support surfaces 131 may be supported on both side edges of the substrate bottom surface 317, respectively, and the middle support surface 131 may be supported on the middle of the substrate bottom surface 317; while the remaining at least one support surface 131 may be located between the end protrusions and the middle protrusions to enhance the support strength and stability of the support surface 131 to the first substrate 31.

Referring to fig. 11, the bottom plate is provided with a groove 112, and the bottom surface of the groove 112 is configured to form the supporting surface;

the substrate bottom surface 317 includes a first surface 3171 and a second surface 3172, the first surface 3171 being separated from the support surface 131, the second surface 3172 being in contact with the support surface 131.

For example, the second surface 3172 protrudes from the bottom surface of the first substrate 31 relative to the first surface 3171, and the second surface 3172 of the bottom surface 317 of the substrate extends into the groove and then abuts against the bottom of the groove, so that the first substrate 31 is limited by the groove on the basis of stably supporting the first power component 3, the position accuracy of the first power component 3 is improved, and the stability of the first substrate 31 supported on the supporting surface 131 is ensured.

In some embodiments, referring to fig. 1 and 2, the protrusion 13 has an upper end surface 134, the first substrate 31 further has a substrate top surface 318 disposed away from the substrate bottom surface 317 and parallel to the substrate bottom surface 317, and the upper end surface 134 is closer to the substrate top surface 318 than the support surface 131 in a direction perpendicular to the substrate bottom surface 317.

In some embodiments, due to the smaller thickness of the first substrate 31, when the protrusion 13 supports the first substrate 31, the contact area between the protrusion 13 and the first substrate 31 occupies only a portion of the substrate bottom surface 317 of the first substrate 31; when the substrate bottom surface 317 abuts against the supporting surface 131, the first substrate 31 may be limited by the step corresponding to the upper end surface 134 on the basis of ensuring that the protrusion 13 plays a better supporting role on the first substrate 31, so as to ensure accuracy of the mounting position of the first power component 3.

In some embodiments, referring to fig. 2 and 3, the first side surface 315 directly or indirectly engages the heat exchange surface 21.

In some embodiments, the first substrate 31 may be a rectangular substrate, and the substrate bottom surface 317 of the first substrate 31 and the supporting surface 131 of the protrusion 13 may be parallel to the bottom plate 11 after being abutted against each other, so as to ensure the setting stability of the first power component 3; and the heat exchange surface 21 may be perpendicular to the mounting surface of the base plate 11, so as to improve the tightness of direct or indirect bonding between the first side surface 315 and the heat exchange surface 21 when the first substrate 31 and the base plate 11 are perpendicular to each other.

In some embodiments, a thermally conductive silicone grease is disposed between the first side surface 315 and the heat exchanging surface 21. Under the condition that the heat conduction silicone grease is filled between the first substrate 31 of the first power assembly 3 and the heat exchange surface 21 of the water channel plate 2, not only the heat exchange efficiency of the heat exchange surface 21 on the first power assembly 3 can be improved, but also the bonding force between the first substrate 31 and the heat exchange surface 21 can be increased, the bonding effect between the first substrate 31 and the heat exchange surface 21 is improved, and the setting stability of the first substrate 31 is improved.

In some embodiments, the roughness of the upper end surface 134 is greater than the roughness of the support surface 131.

In some embodiments, the supporting surface 131 of the protrusion 13 may be formed by machining after casting, so as to improve the flatness of the supporting surface 131 on the protrusion 13, for example, the roughness range of the supporting surface on the protrusion 13 may be controlled to be ra0.1-1.0 μm, so as to ensure the fitting degree of the plane formed by the substrate bottom surface 317 of the first substrate 31 and the plane formed by the supporting surface 131 of the protrusion 13, and improve the stability of the first power component 3.

In some embodiments, the flatness of the supporting surface 131 is less than 0.1mm, so as to improve the flatness of the supporting surface 131 on the protrusion 13, ensure the fitting degree of the plane formed by the substrate bottom surface 317 of the first substrate 31 and the plane formed by the supporting surface 131 of the protrusion 13, and improve the stability of the first power component 3.

In some embodiments, a ratio of a dimension of the support surface 131 to a dimension of the substrate bottom surface in a direction perpendicular to the second side surface is greater than or equal to 1.5. The supporting surface 131 may provide sufficient space for supporting the first substrate 31 in a direction perpendicular to the second side surface, and simultaneously reduce friction between the first substrate 31 and the supporting surface 131, so that the first substrate 31 is attached to the heat exchanging surface 21 more tightly, and heat exchanging efficiency of the water channel plate 2 on the first power assembly 3 is improved.

In some embodiments, a heat conductive silicone grease is disposed between the first side surface 315 and the heat exchanging surface 21, and a ratio of a size of the supporting surface 131 to a size of the substrate bottom surface is greater than or equal to 1.5 in a direction perpendicular to the second side surface.

In the process of mounting the first substrate, when the heat-conducting silicone grease is not solidified, in order to enable the first substrate to be tightly connected with the heat exchange surface, a pressing force is provided for the first substrate in the direction perpendicular to the heat exchange surface, so that friction force opposite to the pressing force is generated between the first substrate and the heat exchange surface, namely, the direction of the friction force is perpendicular to the heat exchange surface and far away from the heat exchange surface, and therefore one end, close to the supporting surface, of the first substrate cannot be well attached to the heat exchange surface, and the heat exchange effect is further affected.

In this embodiment, the size of the bottom surface of the first substrate in the direction perpendicular to the heat exchange surface is smaller, so that the first substrate can be ensured to be always contacted with the support surface, but not with other surfaces, in the process of mounting the first substrate, the precision design of the support surface is generally higher, the friction force is reduced as much as possible, and further, the end, close to the support surface, of the first substrate is ensured to be closely attached to the heat exchange surface.

In some embodiments, the flatness of the supporting surface 131 is less than 0.1mm, the heat-conducting silicone grease is disposed between the first side surface 315 and the heat exchanging surface 21, and the ratio of the size of the supporting surface 131 to the size of the bottom surface of the substrate is greater than or equal to 1.5 in the direction perpendicular to the second side surface. In this embodiment, the size of the bottom surface of the first substrate in the direction perpendicular to the heat exchange surface is smaller, so that the first substrate can be ensured to be always contacted with the support surface, but not with other surfaces, in the process of mounting the first substrate, the precision design of the support surface is generally higher, the friction force is reduced as much as possible, and further, the end, close to the support surface, of the first substrate is ensured to be closely attached to the heat exchange surface.

In some embodiments, the roughness of the supporting surface is controlled to be in the range of ra0.1-1.0 μm, the heat conductive silicone grease is disposed between the first side surface 315 and the heat exchanging surface 21, and the ratio of the size of the supporting surface 131 to the size of the bottom surface of the substrate is greater than or equal to 1.5 in the direction perpendicular to the second side surface. In this embodiment, the size of the bottom surface of the first substrate in the direction perpendicular to the heat exchange surface is smaller, so that the first substrate can be ensured to be always contacted with the support surface, but not with other surfaces, in the process of mounting the first substrate, the precision design of the support surface is generally higher, the friction force is reduced as much as possible, and further, the end, close to the support surface, of the first substrate is ensured to be closely attached to the heat exchange surface.

In some embodiments, referring to fig. 1, the vehicle power supply further comprises a stop assembly 4, and the stop assembly 4 abuts against a side of the first power assembly 3 away from the waterway board 2.

In some embodiments, the protrusion 13 may support the first power assembly 3 from the bottom of the first power assembly 3, and the water channel plate 2 may limit the first power assembly 3 from the inner side of the first power assembly 3 on the basis of heat exchange of the first power assembly 3.

And the stop component 4 set up in hold the chamber and the butt in when the first power component 3 is kept away from one side of water course board 2, stop component 4 can follow the outside of first power component 3 is right first power component 3 forms spacingly, guarantees the accuracy of first power component 3 setting position improves first power component 3 is to the stability of external connection.

In some embodiments, the vehicle power supply further includes an elastic member 42, one end of the elastic member 42 is crimped to the first power component 3, and the other end of the elastic member 42 is connected to the base plate 11.

In some embodiments, the elastic member 42 may generate compression deformation when directly or indirectly connected to the bottom plate 11, and when the elastic member 42 is pressed against the first power component 3 by the elastic force generated by the elastic member, the thermal resistance between the first power component 3 and the heat exchange surface 21 of the water channel plate 2 can be reduced, so that the heat dissipation performance of the water channel plate 2 to the first power component 3 is improved.

In some embodiments, the elastic member 42 may be a spring sheet with various shapes, such as a spring, a V-shaped bend, or an S-shaped bend.

In some embodiments, the elastic member 42 includes a first connecting piece and a second connecting piece, where the first connecting piece is connected to the first power assembly 3 by an oblique press connection, and the second connecting piece is connected to the bottom plate 11, where the first connecting piece may generate compression deformation when being pressed to the first power assembly 3, and the elastic force generated by the first connecting piece can reduce thermal resistance between the first power assembly 3 and the heat exchange surface 21 of the water channel plate 2.

In some embodiments, the vehicle power supply further includes a connection structure 43, and the other end of the elastic member 42 is connected to the base plate 11 through the connection structure 43.

In some embodiments, the connection structure 43 may be a connection location directly or indirectly provided on the base plate 11, so that the other end of the elastic member 42 is connected to the base plate 11 through the connection location.

In some embodiments, the connecting structure 43 is a connecting post, the axis of the connecting post is perpendicular to the supporting surface 131, and the other end of the elastic member 42 is fixed to the connecting post.

In some embodiments, the connection structure 43 is a connection post, and the connection post includes a threaded hole, an axis of the threaded hole is perpendicular to the supporting surface 131, and the other end of the elastic member 42 is fixed to the threaded hole by a screw, so as to enable the other end of the elastic member 42 to be detachably connected to the base plate 11, and increase the connection strength of the connection between the elastic member 42 and the base plate 11.

In another embodiment, the connection structure 43 is a clamping protrusion, the other end of the elastic member 42 has a clamping groove, and the other end of the elastic member 42 can be detachably connected to the base plate 11 through the clamping fit between the clamping protrusion and the clamping groove, so as to ensure the connection reliability between the elastic member 42 and the base plate 11.

In some embodiments, the vehicle-mounted power supply further includes a connection board 41, where the connection posts include a plurality of connection posts, and the plurality of connection posts are sequentially spaced along a first direction, and the first direction is parallel to the first side surface 315 and parallel to the supporting surface 131, and the connection board 41 connects the plurality of connection posts. The strength of the connecting column can be increased, and the reliability of connection is improved. Simultaneously, the connecting columns and the box body are convenient to cast integrally, and when a plurality of connecting columns are connected through the connecting plates, the connecting plates and the connecting columns are convenient to cast.

In some embodiments, the connection plate 41 may be vertically connected to the bottom plate 11 while being parallel to the heat exchange surface 21 of the water channel plate 2, so as to form a uniform-width fixed gap between the connection plate 41 and the heat exchange surface 21 of the water channel plate 2; the first power assembly 3 is fixed in a fixed gap between the connection plate 41 and the waterway plate 2 to form a limit and fix for opposite sides of the first power assembly 3.

In the case where the connection plate 41 is connected to a plurality of connection columns, the strength of the connection columns can be increased, and the reliability of the connection between the elastic member 42 and the base plate 11 can be improved.

Meanwhile, the connecting columns can be cast integrally with the box body 1, and when a plurality of connecting columns are connected through the connecting plate 41, the connecting plate 41 and the connecting columns are convenient to cast.

The bottom plate is provided with a bulge, the bulge is provided with the supporting surface, and the bulge is arranged between the connecting plate and the water channel plate.

In some embodiments, the protrusion is disposed between the connection plate and the waterway plate. In the case that the base bottom surface 317 is supported on the supporting surface 131, the first base plate 31 may be disposed between the connecting plate and the waterway plate, so as to limit the first base plate 31 by the connecting plate and the waterway plate.

In some embodiments, the connection plate 41 is disposed on a side of the connection post away from the first substrate 31.

In some embodiments, when the connecting plate 41 connects a plurality of the connecting posts, the connecting plate 41 is disposed on a side of the connecting post away from the first substrate 31, so that the connecting post is closer to the first substrate 31, and the elastic member 42 is further capable of providing a larger pressing force for the first power assembly 3, so as to ensure the setting stability of the first power assembly 3.

In some embodiments, the distance between the connection plate 41 and the first substrate 31 is equal to the distance between the central axis of the connection post and the first substrate 31. That is, the connecting column may be disposed right above the connecting plate 41, so that the connecting column and the connecting plate 41 may be formed integrally on the basis of ensuring the connection strength between the connecting column and the connecting plate 41.

In some embodiments, the vehicle power supply further includes an insulating sheet 33, and the insulating sheet 33 is disposed between the first power device 32 and one end of the elastic member 42.

In some embodiments, the insulating sheet 33 is connected to a side of the first power device 32 away from the first substrate 31, so that the insulating sheet 33 is disposed between the first power device 32 and one end of the elastic member 42, so that a safety problem caused by insufficient electrical clearance between the elastic member 42 and the first power device 32 can be prevented.

In some embodiments, referring to fig. 3, one end of the elastic member 42 is disposed adjacent to an intermediate position of the first substrate 31 in a direction perpendicular to the supporting surface 131.

In some embodiments, in the vertical direction shown in fig. 3, the first substrate 31 and the insulating sheet 33 are disposed vertically opposite to each other, and sandwich the plurality of first power devices 32 therebetween; when one end of the elastic member 42 is disposed adjacent to the middle position of the first substrate 31, the stress when the heat exchange surface 21 and the first substrate 31 are mutually bonded is more balanced, so as to ensure stable setting of the first power assembly 3.

In some embodiments, referring to fig. 1, the interior of the channel plate 2 forms flow channels 22, the flow channels 22 being configured to circulate a heat exchange medium.

In some embodiments, the water channel plate 2 may be a heat exchange plate disposed perpendicular to the bottom plate 11, the flow channel 22 is formed inside the heat exchange plate, and heat exchange between the heat exchange medium and the first power assembly 3 may be achieved in the flow channel 22 when a cooling liquid or a cooling air or other heat exchange medium circulates, so that the temperature of the first power assembly 3 may be maintained within a normal operating temperature range.

In some embodiments, referring to fig. 4 and 5, the vehicle power supply further includes a second power assembly 7, where the second power assembly 7 is spaced from the first power assembly 3, and the second power assembly has a second substrate 71, and the second substrate 71 is supported on the supporting surface.

The second power component further comprises a second power device, and the second power device is not limited to a MOS (metal oxide semiconductor) tube, a transistor, an IGBT (insulated gate bipolar transistor) and the like.

In some embodiments, the second power assembly 7 is connected to the heat exchanging surface 21 at a distance from the first power assembly 3 to exchange heat with a plurality of power assemblies while realizing the water channel plate 2.

In some embodiments, referring to fig. 10, the projection of the water channel plate 2 on the bottom plate 11 is in a ring shape or a U shape, the outer peripheral side of the water channel plate 2 is configured as the heat exchange surface 21, and the second power components 7 are spaced apart from the first power components 3 on the outer peripheral side of the water channel plate 2.

The projection of the flow channel 22 in the water channel plate 2 on the bottom plate 11 may be U-shaped, that is, the medium inlet and the medium outlet of the flow channel 22 are disposed on the same side, for example, the medium inlet and the medium outlet of the flow channel 22 are close to the side plate 12 on the same side of the box 1.

The annular water channel plate 2 can increase the area of the heat exchange surface 21 at the outer periphery side of the water channel plate 2, the heat exchange surface 21 at the outer periphery side of the water channel plate 2 can be provided with a plurality of first power components 3 and a plurality of second power components 7 at intervals, and medium in the flow channel 22 is transmitted along the arrangement direction of the plurality of second power components 7 and the first power components 3 so as to exchange heat for the plurality of power components simultaneously through the same heat exchange surface 21.

In some embodiments, referring to fig. 3 and 9, the vehicle-mounted power supply includes a circuit board 8;

the circuit board 8 is perpendicular to the first substrate 31, a connection plug 314 is disposed on the first substrate 31, an insertion hole 81 is disposed on the circuit board 8, and the connection plug 314 is inserted into the insertion hole 81, so as to electrically connect the first substrate 31 with the circuit board 8.

In some embodiments, a circuit board 8 may be plugged with a first power component 3, so as to ensure stability of electrical connection between the circuit board 8 and the first power component 3; and the circuit board 8 and the first power component 3 are connected without adopting a secondary welding production process, so that the stress is absorbed, the vibration resistance strength of the first power component 3 is improved, and meanwhile, the production, the assembly and the disassembly are convenient.

In some embodiments, the connection plug 314 may be composed of a plastic member having insulating properties and copper pins having conductive properties. And the part of the plastic member of the assembled connection plug 314 covers the board edge positions of the first substrate 31 and the circuit board 8 to provide insulation protection between the first substrate 31 and the circuit board 8.

In some embodiments, the first power device 32 is a patch MOS transistor.

In some embodiments, when the first power device 32 is a patch MOS transistor, the first power component 3 may have low power consumption, low noise, and low leakage current, and stability and reliability of the first power component 3 may be improved.

The embodiment of the utility model also provides a vehicle, which comprises the vehicle-mounted power supply.

Although specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the foregoing examples are for illustration only and are not intended to limit the scope of the utility model, and that any combination of the above-described embodiments of the utility model are within the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (25)

1. A vehicle-mounted power supply, characterized by comprising:

a bottom plate (11), wherein a supporting surface (131) is arranged on the bottom plate (11);

a waterway plate (2), the waterway plate (2) being arranged on the base plate (11), and the waterway plate (2) having a heat exchange surface (21);

-a first power assembly (3), the first power assembly (3) comprising a first substrate (31) and a plurality of first power devices (32), the first substrate (31) having a first side surface (315), a second side surface (316) and a substrate bottom surface (317), the first side surface (315) being connected to the heat exchanging surface (21), the plurality of first power devices (32) being provided at the second side surface (316);

wherein a portion of the substrate bottom surface (317) is in contact with the support surface (131).

2. The vehicle-mounted power supply according to claim 1, characterized in that a protrusion (13) is provided on the bottom plate (11), and the protrusion (13) is provided with the supporting surface (131).

3. The vehicle-mounted power supply according to claim 2, wherein the protrusion further has a first side surface (132) and a second side surface (133) on both sides of the supporting surface (131), and the first side surface (132) and the second side surface (133) are perpendicular to the first side surface (315);

wherein a ratio of a size of the support surface (131) to a size of the substrate bottom surface (317) in a direction of an intersection of the first side surface (315) and the substrate bottom surface (317) ranges from (1:20) - (1:5).

4. The vehicle-mounted power supply according to claim 1, characterized in that at least two supporting surfaces (131) are arranged on the bottom plate (11), and the two supporting surfaces (131) are respectively supported on two sides of the bottom surface (317) of the base plate.

5. The vehicle-mounted power supply according to claim 1, characterized in that at least three supporting surfaces (131) are provided on the bottom plate (11), and the three supporting surfaces (131) are respectively supported at both sides and the middle position of the bottom surface (317) of the substrate.

6. The vehicle-mounted power supply according to claim 1, characterized in that a groove (112) is provided on the bottom plate, a bottom surface of the groove (112) being configured to form the support surface;

the substrate bottom surface (317) includes a first surface (3171) and a second surface (3172), the first surface (3171) being separated from the support surface (131), the second surface (3172) being in contact with the support surface (131).

7. The vehicle-mounted power supply according to claim 2, characterized in that an upper end face (134) is further provided on the projection, the first substrate (31) further has a substrate top face (318) which is distant from the substrate bottom face (317) and is provided in parallel with the substrate bottom face (317), and the upper end face (134) is closer to the substrate top face (318) than the support face (131) in a direction perpendicular to the substrate bottom face (317).

8. The vehicle power supply according to any one of claims 1-7, characterized in that a heat conductive silicone grease is arranged between the first side surface (315) and the heat exchanging surface (21).

9. The vehicle-mounted power supply according to claim 7, characterized in that the roughness of the upper end face (134) is greater than the roughness of the support face (131).

10. The vehicle power supply according to any of claims 1-7, characterized in that the flatness of the support surface (131) is less than 0.1mm.

11. The vehicle-mounted power supply according to claim 1, further comprising an elastic member (42), one end of the elastic member (42) being crimped to the first power module (3), the other end of the elastic member (42) being connected to the bottom plate (11).

12. The vehicle-mounted power supply according to claim 11, characterized in that the elastic member (42) includes a first connecting piece and a second connecting piece connected to each other, the first connecting piece being obliquely crimped to the first power module (3), the second connecting piece being connected to the bottom plate (11).

13. The vehicle-mounted power supply according to claim 12, characterized by further comprising a connection structure (43);

the other end of the elastic piece (42) is connected to the bottom plate (11) through the connecting structure (43).

14. The vehicle-mounted power supply according to claim 13, characterized in that the connection structure (43) is a connection column, an axis of which is perpendicular to the supporting surface (131), and the other end of the elastic member (42) is fixed to the connection column.

15. The vehicle-mounted power supply according to claim 14, further comprising a connection plate (41), wherein the connection posts include a plurality of connection posts, and the plurality of connection posts are sequentially arranged at intervals along a first direction, wherein the first direction is parallel to the first side surface (315) and parallel to the support surface (131), and the connection plate (41) connects the plurality of connection posts.

16. The vehicle power supply of claim 15, wherein the base plate is provided with a protrusion having the support surface thereon, the protrusion being disposed between the connection plate and the waterway plate.

17. The vehicle-mounted power supply according to claim 16, characterized in that the connection plate (41) is provided on a side of the connection post remote from the first base plate (31).

18. The vehicle-mounted power supply according to claim 15, characterized in that a distance between the connection plate (41) and the first base plate (31) is equal to a distance between a central axis of the connection post and the first base plate (31).

19. The vehicle-mounted power supply according to claim 11, further comprising an insulating sheet (33), the insulating sheet (33) being provided between the first power device (32) and one end of the elastic member (42).

20. The vehicle-mounted power supply according to claim 11, characterized in that one end of the elastic member (42) is disposed adjacent to an intermediate position of the first substrate (31) in a direction perpendicular to the support surface (131).

21. The vehicle power supply according to claim 1, further comprising a second power assembly (7), the second power assembly (7) being arranged at a distance from the first power assembly (3), the second power assembly (7) having a second substrate, the second substrate being supported on the support surface.

22. The vehicle-mounted power supply according to claim 21, characterized in that the projection of the water channel plate (2) on the bottom plate (11) is ring-shaped or U-shaped, the outer peripheral side of the water channel plate (2) is configured as the heat exchanging surface (21), and the second power components (7) are distributed on the outer peripheral side of the water channel plate (2) at intervals from the first power components (3).

23. The vehicle-mounted power supply according to claim 1, characterized by further comprising a circuit board (8);

the circuit board (8) is perpendicular to the first substrate (31), a connecting plug (314) is arranged on the first substrate (31), an inserting hole (81) is formed in the circuit board (8), and the connecting plug (314) is inserted into the inserting hole (81).

24. The vehicle-mounted power supply according to claim 1, characterized in that the first power device (32) is a patch MOS transistor.

25. A vehicle comprising the on-board power supply of any one of claims 1-24.