CN217509320U

CN217509320U - Co-shell heat dissipation device, motor controller and new energy automobile

Info

Publication number: CN217509320U
Application number: CN202221286981.7U
Authority: CN
Inventors: 任思源; 刘铁; 牛冬牛; 姚斌斌; 陈义琛; 刘殿明
Original assignee: Suzhou Huichuan United Power System Co Ltd
Current assignee: Suzhou Huichuan United Power System Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-27
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to a new energy automobile technical field specifically discloses a shell heat abstractor, machine controller and new energy automobile altogether, and this shell heat abstractor altogether includes the drain pan of plastic material and the top shell of metal material, and one side that the top shell deviates from the drain pan is used for installing the power device. The bottom shell is provided with a containing cavity for containing the capacitor and a first opening communicated with the containing cavity, the containing cavity is used for pouring glue to fill and seal the capacitor, the top shell is directly contacted with the glue filled in the containing cavity for filling and sealing the capacitor through the first opening, the top shell made of metal has good heat conductivity, the capacitor conducts heat through the glue, the heat dissipation efficiency of the capacitor is improved, and a cooling flow channel is arranged in the top shell and used for simultaneously dissipating heat of the capacitor and a power device; the drain pan of plastic material can effectively subtract heavy and have insulating nature, makes the device can be in the aspect of total shell heat abstractor's volume, weight and heat dissipation relatively balanced, simple structure, assembly are reliable and can compromise the ann rule demand simultaneously.

Description

Co-shell heat dissipation device, motor controller and new energy automobile

Technical Field

The utility model relates to a new energy automobile technical field, in particular to common shell heat abstractor, machine controller and new energy automobile.

Background

The power semiconductor device is an important component in a motor controller, and is often used with a water channel, a capacitor and other hardware circuit parts. In order to reduce the volume of the controller and improve the integration degree of the controller, the capacitor and the water channel are usually designed into a common shell integrated module scheme.

At present, two common-shell integrated module schemes are generally adopted: metal casing or plastic material casing, metal casing heat conductivity is good, makes the electric capacity heat dissipation strengthen, nevertheless adopts full metal material can increase complete machine cost and weight, has the ann's rule problem of electric capacity and metal-back during the electric capacity embedment simultaneously, for leaving ann's rule clearance, makes the volume can't accomplish minimum, increases the encapsulating volume simultaneously, further increases complete machine cost and weight again. The plastic material casing has good insulating characteristic, can solve the ann rule problem, makes whole integrated module scheme volume reduce simultaneously to and reduce the weight and the cost of complete machine, but the problem that the plastic casing brought can't provide better heat dissipation condition for the electric capacity, and durability and reliability are not enough, and long-term use brings the risk of leaking easily. The existing product is difficult to balance in the aspects of volume, weight and heat dissipation of the shell.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a total shell heat abstractor, machine controller and new energy automobile aims at solving current total shell heat abstractor and is difficult to accomplish balanced technical problem in the aspect of the volume of casing, weight and the heat dissipation.

In order to achieve the above object, the utility model provides a shell heat abstractor altogether is applied to the heat dissipation of electric capacity and power device, shell heat abstractor altogether includes:

the bottom shell is provided with a containing cavity and a first opening communicated with the containing cavity, the first opening is formed in one surface of the bottom shell, and the bottom shell is made of plastic materials; and

the top shell is detachably connected with the bottom shell and used for plugging the first opening, the top shell is made of metal materials, and the top shell is provided with a cooling flow channel.

Optionally, the bottom shell is bonded to the top shell.

Optionally, a plurality of detachable portions are arranged on the bottom shell around the periphery of the first opening, and the plurality of detachable portions are arranged at intervals;

the top shell is provided with a plurality of mounting holes, and the dismounting part corresponds to one mounting hole one by one;

the common-shell heat dissipation device further comprises a plurality of fasteners, and the fasteners penetrate through the assembling portion and the mounting holes to connect the bottom shell and the top shell.

Optionally, the bottom shell is further provided with a second opening communicated with the cavity, and the second opening is formed in a side surface of the bottom shell, which is opposite to or adjacent to the first opening;

the capacitor is accommodated in the accommodating cavity through the second opening.

Optionally, the bottom case further comprises a baffle plate, the baffle plate is connected to one side of the bottom case, the baffle plate protrudes out of the plane where the first opening is located, and the baffle plate and the plane where the first opening is located form an included angle;

and a guide connection part is arranged on one side of the bottom shell, which is just opposite to the baffle, the guide connection part protrudes out of the plane where the first opening is located, and forms a detachable groove with the plane where the first opening is located and the baffle in an enclosing manner, and the top shell is arranged in the detachable groove.

Optionally, the bottom shell is provided with an annular protrusion around the first opening;

a sealing groove is formed in one side, facing the bottom shell, of the top shell;

wherein, when the top shell with the drain pan assembles, the arch is located in the seal groove.

Optionally, a liquid inlet part and a liquid outlet part are arranged on the top shell;

and a liquid guide groove is formed in one side, back to the bottom shell, of the top shell, and the liquid inlet part, the liquid guide groove and the liquid outlet part are sequentially communicated to form the cooling flow channel.

Optionally, the bottom case further includes two limiting plates, the two limiting plates are disposed corresponding to the liquid inlet portion and the liquid outlet portion, and the two limiting plates are respectively configured to abut against and limit the liquid inlet portion and the liquid outlet portion.

The utility model also provides a motor controller, motor controller includes:

the device comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with an installation cavity;

the control assembly is arranged in the mounting cavity and comprises a capacitor and a power device, and the capacitor is electrically connected with the power device; and

the common-shell heat dissipation device is arranged in the installation cavity, the capacitor is arranged in the cavity of the common-shell heat dissipation device, and the power device is arranged on one side, deviating from the bottom shell, of the top shell of the common-shell heat dissipation device.

The utility model also provides a new energy automobile, new energy automobile includes:

the vehicle body is provided with an installation position; and

as for the motor controller, the motor controller is arranged on the mounting position and is detachably connected with the vehicle body.

The utility model discloses technical scheme passes through the top shell and the insulating drain pan of metal material, effectively solves current common-shell heat abstractor and is difficult to accomplish balanced problem in the aspect of the volume of casing, weight and heat dissipation. The common-shell heat dissipation device comprises a bottom shell made of plastic materials and a top shell made of metal materials, one side, away from the bottom shell, of the top shell is used for mounting a power device, the bottom shell is provided with a containing cavity used for containing a capacitor and a first opening communicated with the containing cavity, the containing cavity is used for pouring glue to encapsulate the capacitor, the top shell is in direct contact with the glue in the containing cavity through the first opening, the top shell made of metal materials has good heat conductivity, the capacitor conducts heat through the glue, the heat dissipation efficiency of the capacitor is improved, a cooling flow channel is arranged in the top shell, and the cooling flow channel is used for dissipating heat of the capacitor and the power device at the same time; the bottom shell made of the plastic material can effectively reduce weight and has insulating property, so that the device can be relatively balanced in the aspects of volume, weight and heat dissipation of the common-shell heat dissipation device, and meanwhile, the structure is simple, the assembly is reliable, and the safety requirements can be met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a bottom shell and a top shell according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a bottom shell and a top shell according to an embodiment of the present invention;

FIG. 3 is a schematic top view of the co-enclosed heat sink shown in FIG. 1;

FIG. 4 is a front view of the co-housed heat sink shown in FIG. 1;

fig. 5 is a schematic view of a bottom case structure in another embodiment of the present invention.

The reference numbers indicate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a common-casing heat dissipation apparatus 100 for heat dissipation of capacitors and power devices. Fig. 1 is a schematic view illustrating an assembly structure of a bottom case 10 and a top case 30 of a common-case heat dissipation device 100 according to an embodiment of the present invention; fig. 2 is an exploded view of the bottom housing 10 and the top housing 30 of the common housing heat dissipation device 100 according to an embodiment of the present invention; FIG. 3 is a schematic top view of the co-enclosed heat sink shown in FIG. 1; FIG. 4 is a front view of the co-housed heat sink shown in FIG. 1; fig. 5 is a schematic view of a bottom case structure in another embodiment of the present invention.

As shown in fig. 1 and fig. 2, a common-shell heat dissipation device 100 provided by the embodiment of the present invention includes a bottom shell 10 and a top shell 30, the bottom shell 10 is provided with a cavity 10A and a first opening 10B communicating with the cavity 10A, the first opening 10B is provided on a surface of the bottom shell 10, and the bottom shell 10 is made of plastic material; the top case 30 is detachably connected to the bottom case 10, and the top case 30 blocks the first opening 10B. The top case 30 is made of metal, and the top case 30 is provided with a cooling flow passage.

Optionally, the capacitor placed in the cavity 10A is a bus capacitor.

The utility model discloses the total-shell heat abstractor that technical scheme provided includes the top shell 30 of metal material and the drain pan 10 of plastic material, effectively solves current total-shell heat abstractor 100 and is difficult to accomplish balanced problem in the aspect of the volume of shell, weight, heat dissipation and the reliability. In the common-shell heat dissipation device 100, one side, away from the bottom shell 10, of the top shell 30 is used for mounting a power device, the bottom shell 10 is provided with a containing cavity 10A for containing a capacitor and a first opening 10B communicated with the containing cavity 10A, the capacitor is placed in the containing cavity 10A, glue is filled into the containing cavity 10A to fill and seal the capacitor, the top shell 30 is in direct contact with the glue in the containing cavity 10A through the first opening 10B, the top shell 30 made of a metal material has good heat conductivity, the capacitor conducts heat through the glue, the heat dissipation efficiency of the capacitor is improved, a cooling flow channel is arranged in the top shell 30, and after the top shell 30 and the bottom shell 10 are assembled, the cooling flow channel is used for simultaneously dissipating heat of the capacitor and the power device; the bottom case 10 made of plastic material can effectively reduce weight and has insulating property, so that the common case heat dissipation device 100 can be relatively balanced in volume, weight and heat dissipation, and meanwhile, the common case heat dissipation device has a simple structure, is reliable to assemble and can meet the safety requirements.

The utility model discloses a totally shell heat abstractor 100 with the top shell 30 of metal material and the removable assecmbly of drain pan 10 of plastic material, the radiating effect and the reliability of metal material have been combined, and the insulating nature of plastic material, low weight and low-cost characteristics, and first opening 10B on the drain pan can make the bottom of the top shell 30 of holding the interior casting glue direct contact metal material of chamber 10A when reducing the plastic material, promote heat conduction efficiency, make totally shell heat abstractor 100 have small, light in weight, the heat dissipation is good, low cost, advantages such as reliability height, satisfy ann rule requirement simultaneously.

In one example, the metal material is copper or aluminum. An aluminum top shell 30 may be used in view of cost and weight requirements.

In one example, bottom shell 10 is bonded to top shell 30.

On the plastic bottom case 10, a plane for bonding with the bottom of the top case 30 is disposed outside the first opening 10B, and the top case 30 and the bottom case 10 are bonded by glue. In addition, after the core package of the capacitor is placed in the cavity 10A of the bottom case 10, the core package of the capacitor is filled into the cavity 10A, the filled colloid also flows to the connecting surface of the top case 30 and the bottom case 10, and after the colloid is solidified, the effects of moisture prevention, heat conduction and reinforcement of connection between the top case 30 and the bottom case 10 are achieved. The process for connecting the top shell 30 and the bottom shell 10 in an adhesive mode is simple, fastening bolts are omitted, the size of the common shell heat dissipation device can be reduced, the space occupied by the controller is saved, and the connection reliability and the sealing performance of the top shell 30 and the bottom shell 10 are improved.

In another example, bottom shell 10 and top shell 30 are connected by fasteners 50.

Alternatively, the bottom case 10 is provided with a plurality of detachable portions 13 around the periphery of the first opening 10B, and the plurality of detachable portions 13 are arranged at intervals; the top case 30 is provided with a plurality of mounting holes 30A, and a mounting portion 13 corresponds to one mounting hole 30A.

The common-shell heat sink 100 further includes a plurality of fasteners 50, and the plurality of fasteners 50 are disposed through the mounting portion 13 and the mounting holes 30A.

Optionally, the inner wall of the mounting hole 30A is provided with threads, and the fastening member 50 is threadedly coupled to the mounting hole 30A.

In this embodiment, drain pan 10 and top shell 30 demountable assembly to carry out threaded connection through fastener 50, promote joint strength and reliability, can adapt to the vibrations of great intensity or rock the environment, and convenient to detach changes drain pan 10 and capacitor module, increase design flexibility.

It is understood that the detachable portion may be provided as a detachable hole. In an example, the fastener 50 is installed from bottom to top to achieve the detachable assembly of the bottom case 10 and the top case 30, or the fastener 50 is installed from top to bottom, that is, the fastener 50 sequentially penetrates through the installation hole 30A and the dismounting hole, at this time, the inner wall of the dismounting hole is provided with a thread, the installation hole 30A is a through hole, and the fastener 50 is installed from bottom to top to achieve the detachable assembly of the bottom case 10 and the top case 30.

Optionally, the bottom shell 10 is further provided with a second opening 10C communicating with the cavity 10A.

In one example, the second opening 10C is opened on a side surface of the bottom case 10 opposite to the first opening 10B, as shown in fig. 1, 2, and 4; in another example, the second opening 10C is opened at a side surface of the bottom case 10 adjacent to the first opening 10B, as shown in fig. 5. The capacitor is disposed in the cavity 10A through the second opening 10C.

When the second opening 10C is opened on the bottom case 10 at a side surface adjacent to the first opening 10B, the capacitor is filled from the second opening 10C at the side surface, and then the colloid is poured from the second opening 10C; or, when the second opening 10C is opened on the surface of the bottom case 10 on the side opposite to the first opening 10B, the capacitor is filled from the second opening 10C at the bottom, and then the glue is poured, and the second opening 10C is disposed at the bottom, so that the space utilization rate of the bottom case 10 can be increased.

Optionally, the bottom shell 10 further includes a baffle 16, the baffle 16 is connected to one side of the bottom shell 10, and the baffle 16 protrudes out of the plane where the first opening 10B is located and forms an included angle with the plane where the first opening 10B is located; one side of the bottom shell 10 opposite to the baffle 16 is provided with a guiding and connecting part 17, the guiding and connecting part 17 protrudes out of the plane where the first opening 10B is located, and forms a detachable groove with the plane where the first opening 10B is located and the baffle 16 in an enclosing manner, the top shell 30 is arranged in the detachable groove, and the baffle 16 is used for shielding the side edge of the top shell 30.

In one embodiment, the baffle 16 may be connected to a side of the plastic bottom case 10 and disposed at an angle with the top surface 11, or the baffle 16 and a side plate of the plastic bottom case 10 are integrally disposed; wherein, the side of the drain pan 10 with the plastic material of lower floor upwards extends and makes its protrusion in the top surface 11 setting of drain pan 10 to form baffle 16, baffle 16 are used for sheltering from the lateral wall of the top shell 30 of metal material, with the ann rule problem when solving electric capacity copper bar and power device metal terminal and being connected.

It can be understood that, the electric capacity is located and is held the chamber 10A and extend the winding displacement and upwards buckle to the one side that the top shell 30 of metal material deviates from drain pan 10 through the electric capacity copper bar to be connected with power device, power device can be the IGBT module, baffle 16 is used for sheltering from the lateral wall of the top shell 30 of metal material, in order to completely cut off the extension route of electric capacity copper bar and the top shell 30 of metal material, the ann rule problem when ensureing electric capacity copper bar and power device and/or metal terminal to be connected. The lead-out part 17 is provided with a lead-out terminal which is electrically connected with the power device.

It can be understood that when the second opening 10C is opened on the side surface of the bottom case 10 adjacent to the first opening 10B, the extending length of the copper bar can be shortened, and the generation of stray inductance can be reduced.

Optionally, the bottom shell 10 is provided with an annular protrusion 12 surrounding the first opening 10B; a sealing groove is formed in one side of the top shell 30 facing the bottom shell 10; when the top case 30 is assembled with the bottom case 10, the boss 12 is located in the sealing groove.

In this embodiment, the first opening 10B is disposed on the top surface 11 of the plastic bottom case 10, and the first opening 10B is communicated with the accommodating cavity 10A, so that the risk of glue overflow is existed in the accommodating cavity 10A during glue filling, for example, glue overflows from a contact gap between the top case 30 made of metal and the plastic bottom case 10 made of plastic. In order to prevent the capacitor from overflowing during the encapsulation, the annular protrusion 12 is disposed around the first opening 10B, and a sealing groove is formed around the lower surface of the top case 30 made of the upper metal facing the bottom case 10 made of the plastic material corresponding to the annular protrusion 12. When the bottom shell 10 made of the lower plastic material is fixedly connected with the top shell 30 made of the metal material, the protrusion 12 structure of the bottom shell 10 made of the plastic material is inserted into the sealing groove at the bottom of the top shell 30 made of the metal material, so that the problem of glue overflow of the capacitor at the joint of the top shell 30 made of the metal material and the bottom shell 10 made of the plastic material can be solved.

Optionally, a liquid inlet portion 32 and a liquid outlet portion 33 are arranged on the top shell 30; a liquid guide groove 30B is arranged on one side of the top shell 30, which is back to the bottom shell 10, and the liquid inlet part 32, the liquid guide groove 30B and the liquid outlet part 33 are sequentially communicated to form a cooling flow passage.

In this embodiment, the top case 30 made of metal includes a heat dissipation plate 31, a liquid guiding groove 30B is concavely disposed on a side of the heat dissipation plate 31 facing away from the bottom case 10, the heat dissipation plate 31 has a liquid inlet portion 32 and a liquid outlet portion 33, and the power device is detachably disposed on a side of the top case 30 made of metal facing away from the bottom case 10 through a substrate and covers a notch of the liquid guiding groove 30B. The liquid inlet portion 32, the liquid guide groove 30B, and the liquid outlet portion 33 are sequentially communicated to form a cooling flow path. The electric capacity that holds in the chamber 10A passes through the direct bottom contact with the top shell 30 of metal material of encapsulating and first opening 10B, and the bottom of the top shell 30 of metal material is the outside of the cell diapire of liquid guide groove 30B promptly to carry out heat conduction through the encapsulating and through the bottom heat conduction of the top shell 30 of metal material, it has the coolant liquid to lead to in the during operation cooling channel, in order to take away the heat that conducts through the top shell 30 of metal material, promotes the radiating efficiency.

In an embodiment, the liquid inlet portion 32 and the liquid outlet portion 33 are disposed on two sides of the top case made of metal, the cooling liquid enters the liquid guiding groove 30B through the liquid inlet portion 32, and the cooling liquid in the liquid guiding groove 30B absorbs heat of the power device and the capacitor and then is directly discharged from the opposite side of the liquid inlet portion 32 through the liquid outlet portion 33, so as to improve the heat dissipation rate.

In another embodiment, the liquid inlet portion 32 and the liquid outlet portion 33 are disposed on the same side of the top case made of metal, the cooling liquid enters the liquid guiding groove 30B through the liquid inlet portion 32, a flow guiding portion is disposed in the liquid guiding groove 30B, the flow guiding portion extends along the length direction of the heat dissipating plate 31, one end of the flow guiding portion located on the liquid inlet portion 32 and one end of the liquid outlet portion 33 are connected to the groove wall of the liquid guiding groove 30B to isolate the direct communication between the liquid inlet portion 32 and the liquid outlet portion 33, and a gap is formed between the other end of the flow guiding portion and the groove wall of the liquid guiding groove 30B to allow the cooling liquid to reversely flow back.

In specific implementation, the diversion part divides the liquid guide groove 30B into a liquid inlet section and a liquid outlet section, the liquid inlet section is communicated with the liquid inlet part 32, the cooling liquid enters the liquid inlet section in the liquid guide groove 30B from the liquid inlet part 32, then is drained to the opposite side, away from the liquid inlet part 32 and the liquid outlet part, of the heat dissipation plate 31 through the diversion part, and is drained to the liquid outlet section of the liquid guide groove 30B through a gap between the diversion part and the groove wall of the liquid guide groove 30B, and finally flows out of the liquid outlet section of the liquid guide groove 30B through the liquid outlet part 33, so that the flowing time of the cooling liquid in the liquid guide groove 30B is prolonged, and the heat exchange rate of the cooling liquid in unit volume is improved.

Optionally, the bottom shell 10 further includes two limiting plates 14, the two limiting plates 14 are disposed corresponding to the liquid inlet portion 32 and the liquid outlet portion 33, and the two limiting plates 14 are respectively used for abutting against and limiting the liquid inlet portion 32 and the liquid outlet portion 33.

In this embodiment, when the bottom case 10 is assembled with the top case 30, the bottom case 10 is provided with two position-limiting plates 14, the two position-limiting plates 14 are disposed at positions corresponding to the liquid inlet portion 32 and the liquid outlet portion 33, wherein the position-limiting plates 14 can abut against the outer peripheral walls of the liquid inlet portion 32 and/or the liquid outlet portion 33 to limit and support the liquid inlet portion 32 and/or the liquid outlet portion 33.

In another embodiment, the two limiting plates 14 are respectively provided with a limiting hole corresponding to the liquid inlet portion 32 and the liquid outlet portion 33, and the liquid inlet portion 32 and the liquid outlet portion 33 are respectively penetrated into the two limiting holes during assembly, so as to enhance the supporting effect of the liquid inlet portion 32 and the liquid outlet portion 33, and simultaneously improve the assembly reliability and stability of the top case 30 and the bottom case 10, and improve the use stability of the common case heat dissipation device 100.

When the liquid inlet portion 32 and the liquid outlet portion 33 are respectively located at two opposite sides of the bottom case 10, the bottom case 10 is provided with two limiting plates 14, and the two limiting plates 14 are located at two sides of the heat dissipation plate 31 where the liquid inlet portion 32 and the liquid outlet portion 33 are correspondingly located.

When liquid inlet portion 32 and liquid outlet portion 33 are located on the same side of bottom case 10, bottom case 10 is provided with a limiting plate 14, and limiting plate 14 is provided with two limiting holes corresponding to liquid inlet portion 32 and liquid outlet portion 33 respectively, and two limiting holes are used for limiting liquid inlet portion 32 and liquid outlet portion 33 respectively, promote the stability and the assembly reliability that set up of liquid inlet portion 32 and liquid outlet portion 33.

It can be understood that, the both sides of drain pan 10 are located to two limiting plates 14, and when drain pan 10 and top shell 30 carried out removable assembly, be equipped with mounting hole 30A on the top shell 30, on limiting plate 14 was located to dismouting portion 13, fastener 50 worn to locate in proper order in dismouting portion 13 and the mounting hole 30A of limiting plate 14, realized drain pan 10 and the removable assembly of top shell 30. The detachable portion 13 may be a detachable hole, and the detachable hole is a through hole.

It can be understood that, the lateral wall that drain pan 10 was equipped with limiting plate 14 can also be equipped with reinforcement 15, and the dismouting hole is located on reinforcement 15, and limiting plate 14 also is connected with reinforcement 15, and the setting of reinforcement 15 promotes the support intensity of limiting plate 14 to promote the assembly intensity of top shell 30 and drain pan 10, improve the reliability.

The utility model discloses still provide a motor controller (not shown), motor controller includes casing, control assembly and as above-mentioned any one shell heat abstractor 100 altogether, should the concrete structure of shell heat abstractor 100 altogether refer to above-mentioned embodiment, because this motor controller has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not given here again. The casing is provided with an installation cavity, the control assembly is arranged in the installation cavity and comprises a capacitor and a power device, the capacitor and the power device are electrically connected, the common-shell heat dissipation device 100 is arranged in the installation cavity, the capacitor is arranged in the accommodating cavity 10A of the common-shell heat dissipation device 100, and the power device is arranged on one side, deviating from the bottom shell 10, of the top shell 30 of the common-shell heat dissipation device 100.

Based on the above structure, the top case 30 made of the upper metal layer can provide a good heat dissipation effect for the capacitor, and the cooling flow channel formed by the metal on the top case 30 has high reliability and durability; the bottom shell 10 made of the lower plastic material solves the safety regulation problem of the inner wall, reduces the glue filling amount, further reduces the size, the weight and the cost, and is applied to the motor controller, so that the cost of the motor controller can be reduced, and the installation volume can be reduced.

The utility model discloses still provide a new energy automobile (not shown), new energy automobile include the automobile body and as above-mentioned motor controller, this motor controller's concrete structure refers to above-mentioned embodiment, because this new energy automobile has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the automobile body is equipped with the installation position, and motor controller locates the installation position to can dismantle with the automobile body and be connected.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A shell-sharing heat dissipation device is applied to heat dissipation of capacitors and power devices, and is characterized by comprising:

2. A co-housing heat sink in accordance with claim 1, wherein said bottom housing is bonded to said top housing.

3. A common-shell heat sink according to claim 1, wherein a plurality of detachable portions are provided on the bottom shell around a peripheral side of the first opening, the plurality of detachable portions being provided at intervals;

4. The common-shell heat sink according to claim 1, wherein the bottom shell further has a second opening communicating with the cavity, and the second opening is opened on a side surface of the bottom shell opposite to or adjacent to the first opening.

5. The common shell heat sink according to any one of claims 1 to 4, wherein the bottom shell further comprises a baffle plate, the baffle plate is connected to one side of the bottom shell, the baffle plate protrudes out of the plane of the first opening and forms an included angle with the plane of the first opening;

6. A common shell heat sink according to any of claims 1 to 4, wherein said bottom shell is provided with an annular protrusion surrounding said first opening;

when the top shell is assembled with the bottom shell, the protrusion is located in the sealing groove.

7. A common housing heat sink as in claim 1, wherein said top housing has a liquid inlet portion and a liquid outlet portion;

8. The common shell heat sink according to claim 7, wherein the bottom shell further comprises two position-limiting plates, the two position-limiting plates are disposed corresponding to the liquid inlet portion and the liquid outlet portion, and the two position-limiting plates are respectively used for abutting against and limiting the liquid inlet portion and the liquid outlet portion.

9. A motor controller, characterized in that the motor controller comprises:

the common-shell heat dissipation device as defined in any one of claims 1 to 8, wherein the common-shell heat dissipation device is disposed in the mounting cavity, the capacitor is disposed in the cavity of the common-shell heat dissipation device, and the power device is disposed on a side of the top shell of the common-shell heat dissipation device facing away from the bottom shell thereof.

10. A new energy automobile, characterized in that, the new energy automobile includes:

the vehicle body is provided with an installation position; and

the motor controller of claim 9, wherein the motor controller is disposed at the mounting location and is detachably connected to the body.