CN215269250U

CN215269250U - Integrated heat dissipation module, vehicle-mounted charger and electric automobile

Info

Publication number: CN215269250U
Application number: CN202121136485.9U
Authority: CN
Inventors: 孙永宝; 王帮伟; 向世松; 陶安发; 曾昭麟; 颜龙
Original assignee: Shenzhen Inovance Technology Co Ltd
Current assignee: Huichuan New Energy Vehicle Technology Shenzhen Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-21
Anticipated expiration: 2031-05-25

Abstract

The embodiment of the utility model provides an integrated heat dissipation module, on-vehicle machine and electric automobile that charge, integrated heat dissipation module includes heat dissipation casing, insulating skeleton, a plurality of first heating device and a plurality of second heating device; the heat dissipation shell is independent of the shell of the vehicle-mounted charger and comprises an accommodating cavity; the first heating devices are assembled together through the insulating framework to form a magnetic assembly, the magnetic assembly is installed in the accommodating cavity, and the second heating devices are installed on the outer surface of the heat dissipation shell; the heat dissipation shell comprises a heat dissipation structure, and the magnetic assembly and the second heating device are respectively used for dissipating heat through the heat dissipation structure. The embodiment of the utility model provides a can improve the integrated level of on-vehicle machine that charges greatly, simplify the shell structure of on-vehicle machine that charges simultaneously, reduce the assembly process, improve assembly efficiency, reduce product cost.

Description

Integrated heat dissipation module, vehicle-mounted charger and electric automobile

Technical Field

The embodiment of the utility model provides a vehicle-mounted machine field that charges is related to, more specifically says, relates to an integrated heat dissipation module, vehicle-mounted machine and electric automobile that charge.

Background

In a new energy automobile, a power battery of the new energy automobile is mainly charged by an On Board Charger (OBC). In the vehicle-mounted charger, a magnetic device (such as an inductor, a transformer and the like) and a semiconductor switching device (such as a triode, a diode and the like) are important components of the vehicle-mounted charger. In the working process of the vehicle-mounted charger, the magnetic device and the semiconductor switch device generate a large amount of heat, and in order to ensure the normal work of the vehicle-mounted charger, the magnetic device and the semiconductor switch device need to be radiated by a radiating system.

Most of magnetic devices such as inductors and transformers in the existing vehicle-mounted charger product are installed in a single body mode, namely the magnetic devices such as the inductors and the transformers are generally installed in a heat dissipation cavity in a scattered mode through locking screws and the like, so that the occupied space is large, the utilization rate of a water channel is low, and the glue filling amount is increased; in addition, the shell of the existing vehicle-mounted charger is generally adopted as a carrier of a heat dissipation water channel in the existing vehicle-mounted charger product, so that semiconductor switching devices such as triodes and the like can only be arranged on the side wall in the cavity of the vehicle-mounted charger, and the semiconductor switching devices are arranged on the side wall in the vehicle-mounted charger due to the fact that the number of the semiconductor switching devices is large, a large space needs to be occupied, the size of the product is further increased, and the utilization rate of the water channel is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a to the product of above-mentioned on-vehicle machine that charges is bulky, the water course utilization ratio is lower and the problem that the encapsulating is with high costs, provide an integrated heat dissipation module, on-vehicle machine and electric automobile that charge.

The embodiment of the utility model provides a technical scheme who solves above-mentioned technical problem provides an integrated heat dissipation module, is applied to on-vehicle charger, and on-vehicle charger includes the shell, integrated heat dissipation module includes heat dissipation casing, insulating skeleton, a plurality of first heating device and a plurality of second heating device;

the heat dissipation shell is independent of the shell of the vehicle-mounted charger and comprises an accommodating cavity; the first heating devices are assembled together through the insulating framework to form a magnetic assembly, the magnetic assembly is installed in the accommodating cavity, and the second heating devices are installed on the outer surface of the heat dissipation shell; the heat dissipation shell comprises a heat dissipation structure, and the magnetic assembly and the second heating device are respectively used for dissipating heat through the heat dissipation structure.

As a further improvement of the present invention, the first heat generating device includes one or more of the following devices: the power factor correction device comprises a main transformer, a direct current transformer and a power factor correction inductor;

the insulating framework comprises an insulating plate, the insulating plate comprises a plurality of first terminal holes, and each first terminal hole penetrates through the upper surface and the lower surface of the insulating plate;

the plurality of first heating devices are respectively fixed below the insulating plate, and the end pins of the plurality of first heating devices respectively penetrate through the plurality of first terminal holes and then reach the upper part of the insulating plate.

As a further improvement of the present invention, each of the first terminal holes includes a guide portion protruding from an upper surface of the insulating frame, and a plurality of the terminal pins of the first heat generating element respectively pass through the guide portion to guide a protruding direction.

As a further improvement of the present invention, the heat dissipation case includes second terminal holes respectively corresponding to the plurality of first terminal holes;

when the magnetic assembly is installed in the accommodating cavity of the heat dissipation shell, the terminal pins of the first heating devices respectively penetrate through the second terminal holes and then protrude out of the heat dissipation shell.

As a further improvement of the present invention, the magnetic assembly is fixed in the accommodating cavity by combining the screw fastening and the glue filling;

be equipped with one or more encapsulating and dodge the hole on the insulation board, and each the hole runs through is dodged to the encapsulating the upper surface and the lower surface of insulation board.

As a further improvement of the present invention, the heat dissipation structure of the heat dissipation housing includes a coolant inlet, a coolant outlet and a coolant passage formed between the coolant inlet and the coolant outlet, the heat dissipation housing, the magnetic component and the second heat generating device take away heat from the coolant passage through flowing through the coolant.

As a further improvement of the present invention, the heat dissipation housing includes a top wall and a plurality of side walls, the plurality of side walls are respectively vertically connected to the top wall and sequentially connected end to form a closed ring shape, and the accommodating cavity is enclosed by the inner surfaces of the top wall and the plurality of side walls;

the cooling liquid channel comprises a side wall section flow channel positioned on the side wall and a top wall section flow channel positioned on the top wall, and the second heat generating device is installed on the outer surface of the side wall and/or the outer surface of the top wall.

As a further improvement of the present invention, the first end of the side wall section runner is connected to the coolant inlet, the second end of the side wall section runner is connected to the first end of the top wall section runner, and the second end of the top wall section runner is connected to the coolant outlet.

As a further improvement of the present invention, the coolant inlet and the coolant outlet are located on the outer surface of the same side wall of the heat dissipation case.

The embodiment of the utility model provides a still provide an on-vehicle machine that charges, including shell and as above arbitrary integrated heat dissipation module, integrated heat dissipation module is last to have a plurality of fixed orificess, just integrated heat dissipation module is through passing the fastener of fixed orifices is fixed in the cavity of shell.

The embodiment of the utility model provides an electric automobile is still provided, include as above on-vehicle machine that charges.

The utility model discloses integrated heat dissipation module, on-vehicle machine and electric automobile that charges form magnetic component through insulating skeleton with the equipment of first heating device to generating heat the device with magnetic component and second and integrating the heat dissipation casing, forming an independent module, can improve the integrated level of on-vehicle machine that charges greatly, improve assembly efficiency simultaneously, reduce product cost.

Drawings

Fig. 1 is an exploded schematic view of an integrated heat dissipation module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a magnetic component in an integrated heat dissipation module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an insulating frame in the integrated heat dissipation module according to an embodiment of the present invention;

fig. 4 is a schematic flow diagram of the integrated heat dissipation module and the coolant in the channel of the sidewall segment according to an embodiment of the present invention;

fig. 5 is a schematic flow diagram of the integrated heat dissipation module and the coolant in the top wall channel according to an embodiment of the present invention;

fig. 6 is an exploded schematic view of the vehicle-mounted charger provided by the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, be the embodiment of the utility model provides an integrated heat dissipation module's decomposition structure schematic diagram, this integrated heat dissipation module can be applied to on-vehicle machine that charges, and new energy automobile can be installed to this on-vehicle machine that charges to charge for new energy automobile's power battery. The vehicle-mounted charger comprises a shell, the integrated heat dissipation module of the embodiment is installed in the shell, and the integrated heat dissipation module comprises a heat dissipation shell 11, an insulation framework 124, a plurality of first heating devices 121-123 and a plurality of second heating devices 13. In an embodiment of the present invention, the first heat generating devices 121 to 123 are all magnetic devices, for example, the first heat generating devices 121 to 123 may include a main transformer 121, a dc transformer 122, a power factor correction inductor 123, etc., which may respectively realize functions of ac voltage transformation, dc voltage transformation, filtering, etc.; the second heat generating device 13 is a semiconductor power device, which can perform rectification, inversion, etc., for example, the second heat generating device 13 may specifically include one or more of the following devices: diodes, transistors, Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs), Insulated Gate Bipolar Transistors (IGBTs), and the like. When the vehicle-mounted charger works, the first heating devices 121-123 and the second heating device 13 in the integrated heat dissipation module can perform electric energy conversion, and a large amount of heat is generated in the process that the first heating devices 121-123 and the second heating device 13 can perform electric energy conversion.

The heat dissipation casing 11 in this embodiment is independent of the housing of the vehicle-mounted battery charger, and the heat dissipation casing 11 includes an accommodating cavity. The first heat generating devices 121 to 123 are assembled together through the insulating frame 124 to form a whole, i.e., a magnetic assembly. The magnetic assembly is installed in the accommodating cavity of the heat dissipation shell 11, the second heating device 13 is installed on the outer side surface of the heat dissipation shell 11, namely, the second heating device 13 is installed outside the accommodating cavity. The heat dissipating housing 11 may be made of a material having high heat conduction efficiency, such as iron, aluminum alloy, etc., so as to perform efficient heat exchange and rapid heat conduction with the magnetic assembly in the accommodating chamber and the second heat generating device 13 on the outer side surface.

Meanwhile, the heat dissipation housing 11 further includes a heat dissipation structure, and takes away heat through the heat dissipation structure. Like this, in the working process of the first heating devices 121 to 123 and the second heating devices 13, the heat dissipation shell 11 can continuously perform heat exchange with the first heating devices 121 to 123 and the second heating devices 13, and the heat is taken away by the heat dissipation structure, so that the heat dissipation of the first heating devices 121 to 123 and the second heating devices 13 is realized, and the first heating devices 121 to 123 and the second heating devices 13 are always in a normal working state.

The integrated heat dissipation module assembles a plurality of first heating devices 121-123 together through the insulating framework 124 to form a magnetic assembly, integrates the magnetic assembly and the second heating device 13 into the inner side and the outer side of the heat dissipation shell 11 respectively to form an independent module, and then installs the independent module into the shell of the vehicle-mounted charger, so that the first heating devices 121-123 and the second heating device 13 do not need to be installed into the shell of the vehicle-mounted charger respectively, the integration level of the vehicle-mounted charger is greatly improved, the shell structure of the vehicle-mounted charger is simplified, the assembly procedures of the vehicle-mounted charger are reduced, and the assembly efficiency of the vehicle-mounted charger is improved.

Referring to fig. 2 to 3, in an embodiment of the present invention, the insulating frame 124 includes an insulating plate, and the insulating plate includes a plurality of first terminal holes, and each of the first terminal holes penetrates through an upper surface and a lower surface of the insulating plate. The first heat-generating devices 121 to 123 are respectively fixed below the insulating plate, and the

terminal pins

1211, 1221, and 1231 of the first heat-generating devices 121 to 123 respectively pass through the first terminal holes and then reach the upper side of the insulating plate. Therefore, the wiring of the first heating devices 121-123 can be realized on the same side of the magnetic assembly.

Moreover, in order to align the

terminal pins

1211, 1221, 1231 of the first heat-generating devices 121 to 123 for soldering the

terminal pins

1211, 1221, 1231 to the circuit board, each of the first terminal holes includes a guiding portion 1241 protruding from the upper surface of the insulating frame 124, and the

terminal pins

1211, 1221, 1231 of the first heat-generating devices 121 to 123 are respectively guided by the guiding portions 1241 in a protruding direction, for example, all the

terminal pins

1211, 1221, 1231 are perpendicular to the upper surface of the insulating plate.

Correspondingly, the heat dissipation housing 11 includes second terminal holes corresponding to the plurality of first terminal holes, respectively, and when the magnetic assembly is mounted in the accommodating cavity of the heat dissipation housing 11, the

terminal pins

1211, 1221, and 1231 of the plurality of first heat generating devices 121 to 123 exposed outside the first terminal holes respectively penetrate through the plurality of second terminal holes and then protrude outside the heat dissipation housing, thereby facilitating subsequent circuit board soldering operation.

The utility model discloses an embodiment, the magnetic component accessible screw-fastening that the integration has all first heating devices 121 ~ 123 and the mode that the encapsulating (heat-conducting glue) combined together fix at the holding intracavity of heat dissipation casing 11 (for example the insulation board is parallel with the top surface of heat dissipation casing 11), correspondingly, can set up on the insulation board has fixed orifices 1243 to can fix insulating skeleton 124 in the holding intracavity through screw locking earlier, fill the heat-conducting glue to the holding intracavity again, thereby improve the heat exchange efficiency of first heating devices 121 ~ 123 and heat dissipation casing 11 greatly.

And, be equipped with one or more encapsulating and dodge hole 1242 on the insulation board, and each encapsulating dodges the hole and runs through the upper surface and the lower surface of insulation board. When the glue is poured, the heat conducting glue can pass through the glue pouring avoiding hole 1242 and fully fill the space between each first heating device 121-123, the space between the insulating plate and the first heating device 121-123 and the space between the insulating plate and the heat dissipation shell 11 of the magnetic assembly, so that the heat conduction efficiency is prevented from being reduced due to the occurrence of gaps. In addition, the shape and size of the accommodating cavity on the heat dissipation shell 11 can be matched with the shape and size of the magnetic assembly, so that the glue filling amount is reduced, and only the heat conducting glue is required to fill the gap between the magnetic assembly and the inner wall of the accommodating cavity.

The second heat generating devices 13 are fixed to the heat dissipating case 11 such that the heat generating surfaces thereof are attached to the outer side surface of the heat dissipating case 11. Specifically, in order to improve the heat conduction efficiency and the assembly efficiency, the second heat generating device 13 (i.e., the semiconductor power device) may be first attached to a heat conducting substrate (e.g., a ceramic substrate) 14, one or more semiconductor power devices may be attached to the surface of each heat conducting substrate 14, and then the heat conducting substrate 14 may be attached to the outer side surface of the heat dissipating housing 11. Of course, in practical applications, the second heat generating device 13 and the heat conducting substrate 14 may be fixed on the outer side surface of the heat dissipating housing 11 by an elastic sheet or the like.

Also, in order to facilitate the subsequent circuit board soldering operation, the terminal pins of the respective second heat generating devices 13 have the same orientation, for example, in fig. 1, the terminal pins of the respective second heat generating devices 13 are vertically upward.

In order to improve the heat dissipation efficiency of the heat dissipation housing 11, the heat dissipation structure of the heat dissipation housing 11 may be a liquid cooling heat dissipation structure. Specifically, the heat dissipation structure of the heat dissipation housing 11 includes a coolant inlet 15, a coolant outlet 16, and a coolant channel formed between the coolant inlet 15 and the coolant outlet 16, that is, the body of the heat dissipation housing 11 has a coolant channel therein. The coolant inlet 15 and the coolant outlet 16 may be respectively communicated with an external coolant system (e.g., a coolant channel in a housing of the vehicle-mounted charger, or a coolant system independent of the vehicle-mounted charger), so that the heat dissipation housing 11, the first heat generating devices 121 to 123, and the second heat generating device 13 take away heat through the coolant flowing through the coolant channel. Correspondingly, the shell of the vehicle-mounted charger does not need to be provided with a heat dissipation water channel, and the structure of the shell is simplified.

The utility model discloses an embodiment, heat dissipation casing 11 includes roof 111 and a plurality of lateral wall 112, wherein a plurality of lateral walls 112 are connected perpendicularly respectively on roof 111 and end to end forms closed cyclic annular in proper order, the holding chamber is enclosed by the internal surface of roof 111 and a plurality of lateral wall 112 and closes and form, and the part of heat dissipation casing 11 relative with roof 111 then forms the opening in holding chamber, first heating element 121 ~ 123 accessible this opening assembles the holding intracavity, and can realize the encapsulating operation through this opening. So that the first heat generating devices 121-123 in the accommodating chamber can exchange heat with the top wall 111 and the side wall 112 of the heat dissipating housing 11 at the same time.

Compared with the heat dissipation structure of the magnetic device and the power semiconductor device in the existing vehicle-mounted charger, the heat dissipation shell 11 has the advantages that the outer side surface of the top wall 111 is added for mounting the second heating device 13, the mounting space of the second heating device 13 is expanded, the increase of the whole volume of the vehicle-mounted charger shell due to the insufficient mounting space of the second heating device 13 is avoided, and meanwhile, the concentrated mounting of the second heating device 13 can be realized.

Particularly, the cooling liquid channel in the heat dissipation housing 11 includes a side wall section channel located on the side wall and a top wall section channel located on the top wall, that is, the cooling liquid channel in the heat dissipation housing 11 flows through the top wall 111 and the side wall 112 of the heat dissipation housing 11, and the first heat-generating devices 121 to 123 in the accommodating cavities can perform efficient heat dissipation through the top wall 111 and the side wall 112 of the heat dissipation housing 11, so that the heat dissipation efficiency of the first heat-generating devices 121 to 123 is greatly improved.

Accordingly, the second heat generating device 13 is mounted on the outer surface of the side wall 112 and/or the outer surface of the top wall 111 of the heat dissipation housing 11.

To improve the integration of the product, the second heat generating devices 13 may be mounted to both the outer surface of the side wall 112 and the outer surface of the top wall 111 of the heat dissipation housing 11, i.e., the second heat generating devices 13 are collectively mounted. Like this, use relatively less stromatolite copper bar of size and drive circuit board to realize all second device 13 that generate heat's welding, not only do benefit to and be connected with outside copper bar, reduce outside copper bar size, can save stromatolite copper bar and drive circuit board's material cost moreover.

Referring to fig. 4-5, in one embodiment of the present invention, the coolant passage in the heat dissipating housing 11 has a first end connected to the coolant inlet 15, a second end connected to the first end of the top wall section, and a second end connected to the coolant outlet 16. That is, the coolant flowing in from the coolant inlet 15 flows through the side walls 112 of the heat dissipating housing 11, flows into the top wall 111 of the heat dissipating housing 11, and flows out from the coolant outlet 16, as shown by the arrows in fig. 4 to 5. Because the heat dissipation housing 11 needs to dissipate heat for the first heat generating devices 121-123 and the second heat generating devices 13 at the same time, when the plurality of second heat generating devices 13 are intensively fixed on one side wall 112 and the top wall 111 of the heat dissipation housing 11, the cooling liquid channel structure is convenient for balancing heat dissipation of the second heat generating devices 13, so that the second heat generating devices 13 basically have similar temperatures.

In particular, the coolant inlet 15 and the coolant outlet 16 on the heat dissipation housing 11 may be located on the outer surface of the same sidewall 112 of the heat dissipation housing 11 to facilitate communication with an external coolant system while maximizing the travel of the coolant passage within the heat dissipation housing 11.

After the integrated heat dissipation module is assembled, the driving circuit board and the terminal pins of the second heat generating device 13 can be soldered and fixed through processes such as reflow soldering and the like.

It is shown in combination with fig. 6 that the embodiment of the utility model provides a still provide a vehicle-mounted machine that charges, this vehicle-mounted machine that charges can be applied to new energy automobile to charge for the power battery among the new energy automobile. The vehicle-mounted charger of the embodiment comprises a shell, a control circuit board 3 and the integrated heat dissipation module 1, wherein the shell is composed of a box body 21 and an upper cover 22, a mounting cavity is formed between the box body 21 and the upper cover 22, the integrated heat dissipation module 1 and the control circuit board 3 are respectively mounted in the mounting cavity, and end pins of the first heating devices 121-123 and the second heating device 13 in the integrated heat dissipation module 1 are respectively welded and fixed on the control circuit board 3. The integrated heat dissipation module 1 is provided with a plurality of fixing holes, and the integrated heat dissipation module 1 is fixed in the mounting cavity of the housing through fasteners passing through the fixing holes.

Specifically, the outer side surface of the side wall 112 of the heat dissipation housing 11 may have a plurality of lugs 17, each lug 17 has a fixing hole, and the fastening member may be a screw, so that the integrated heat dissipation module 1 may be fixed in the housing of the vehicle-mounted charger by the screw. Meanwhile, the cooling liquid inlet 15 and the cooling liquid outlet 16 can also be provided with lugs 17, so that the cooling liquid inlet 15 and the cooling liquid outlet 16 are conveniently fixed with a shell of the vehicle-mounted charger, and cooling liquid accessed by the shell can flow in through the cooling liquid inlet 15 and is discharged from the cooling liquid outlet 16.

The embodiment of the utility model provides an electric automobile is still provided, include as above on-vehicle machine that charges. The vehicle-mounted charger can charge a power battery in the electric automobile.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An integrated heat dissipation module is applied to a vehicle-mounted charger, and the vehicle-mounted charger comprises a shell, and is characterized in that the integrated heat dissipation module comprises a heat dissipation shell, an insulating framework, a plurality of first heating devices and a plurality of second heating devices;

2. The integrated thermal module of claim 1 wherein the first heat generating device comprises one or more of: the power factor correction device comprises a main transformer, a direct current transformer and a power factor correction inductor;

3. The integrated heat dissipation module of claim 2, wherein each of the first terminal holes comprises a guiding portion protruding from an upper surface of the insulating frame, and the terminal pins of the first heat generating devices are respectively guided by the guiding portions to protrude in a protruding direction.

4. The integrated heat dissipation module of claim 2, wherein the heat dissipation housing comprises second terminal holes corresponding to the first terminal holes, respectively;

5. The integrated heat dissipation module of claim 2, wherein the magnetic assembly is fixed in the accommodating cavity by combining screw fastening and glue filling;

6. The integrated thermal module according to any one of claims 1-5, wherein the heat dissipation structure of the heat dissipation housing comprises a coolant inlet, a coolant outlet, and a coolant channel formed between the coolant inlet and the coolant outlet, and the heat dissipation housing, the magnetic assembly, and the second heat generating device remove heat through the coolant flowing through the coolant channel.

7. The integrated heat dissipation module of claim 6, wherein the heat dissipation housing comprises a top wall and a plurality of side walls, the plurality of side walls are respectively vertically connected to the top wall and sequentially connected end to form a closed ring shape, and the accommodating cavity is enclosed by inner surfaces of the top wall and the plurality of side walls;

8. The integrated heat dissipation module of claim 7, wherein the first end of the side wall section channel is connected to the coolant inlet, the second end of the side wall section channel is connected to the first end of the top wall section channel, and the second end of the top wall section channel is connected to the coolant outlet.

9. A vehicle-mounted charger, characterized by comprising a housing and the integrated heat dissipation module according to any one of claims 1 to 8, wherein the integrated heat dissipation module is provided with a plurality of fixing holes, and the integrated heat dissipation module is fixed in a cavity of the housing by fasteners penetrating through the fixing holes.

10. An electric vehicle, characterized in that it comprises a vehicle-mounted charger according to claim 9.