EV switching power supply module structure

Abstract

The utility model provides an EV switch power supply module structure which comprises an upper cover, a lower shell, a water cooling plate, a first EV switch power supply module, a second EV switch power supply module and an aluminum substrate, the first EV switch power supply module and the second EV switch power supply module are identical in specification, one side of the aluminum substrate is uneven, the other side of the aluminum substrate is flat, the flat side is installed on the lower working face of the water cooling plate, and the upper working face of the water cooling plate is uneven. The first EV switching power supply module is locked on the upper working face of the water cooling plate through screws, the second EV switching power supply module is locked on the uneven face of the aluminum substrate through screws, and input, output and signal control of the first EV switching power supply module and the second EV switching power supply module are respectively connected together to form a parallel structure. The aluminum substrate, the water cooling plate and the two EV power supply modules are assembled and then placed into the lower shell; according to the EV switching power supply module structure provided by the utility model, the two EV switching power supply modules are connected in parallel and are respectively assembled on the upper working surface and the lower working surface of the water cooling plate, so that the heat dissipation effect is good, the power is increased, the integration level is high, the overall structure is simple, and the assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the field of high-power switching power supplies, in particular to an EV switching power supply module structure. Background Art

[0002] With the rapid development of new energy vehicles, the demand for EV switching power supplies is increasing. To meet the needs of dust and water resistance, heat dissipation, and interference shielding, EV switching power supply modules are usually installed in an aluminum alloy casing. To increase power, EV switching power supply modules require good heat dissipation, and water cooling is currently a relatively economical and common method. With the market demand for high-power output of EV switching power supplies, for example, if the output power is exactly twice as high and the output voltage is the same, the solution is to connect two EV switching power supplies of the same specification in parallel. This requires two aluminum casings and heat dissipation channels, which increases the space requirements of the client and increases the cost exponentially. Obviously, neither of these two options is acceptable to the client.

[0003] In order to solve the above-mentioned problem of power expansion, the present invention proposes a new EV switching power supply module structure to meet the market demand for high-power EV switching power supply modules. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an EV switching power supply module structure.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] An EV switching power module structure includes an upper cover, a lower shell, a water-cooling plate, two first and second EV switching power modules of the same specification, and an aluminum base plate. The aluminum base plate has an uneven surface on one side and a flat surface on the other side. The flat surface is mounted on the lower working surface of the water-cooling plate. The working surface of the water-cooling plate is uneven. The first EV switching power module is screwed to the upper working surface of the water-cooling plate, and the second EV switching power module is screwed to the uneven surface of the aluminum base plate. The input, output, and signal control of the first and second EV switching power modules are respectively connected together to form a parallel structure. After the aluminum base plate, the water-cooling plate, and the two EV power modules are assembled, they are placed in the lower shell.

[0007] Furthermore, a plurality of threaded holes are provided on the flange edge of the upper cover, and screws can be used to lock the upper cover to the lower shell.

[0008] Furthermore, the lower shell is a pentahedron with an open top, with two mounting brackets on each of its left and right sides, an input port, a positive output port, a negative output port and a signal port on the front side, and a water inlet port and a water outlet port on the rear side.

[0009] Furthermore, there are several screw holes on the flange edge around the top of the lower shell, and the positions of the screw holes of the upper cover correspond one to one. There is a circle of grooves on the inner side of the flange edge for installing sealing strips or sealants.

[0010] Furthermore, there are bosses on the front and rear inner side walls of the lower shell for supporting the water cooling plate. There are threaded holes in the bosses, and the water cooling plate can be locked into the lower shell with screws.

[0011] Furthermore, the EV switching power supply module includes two power modules, a control carrier board and a filter. The power modules and the control carrier board are assembled together through plug-ins on the PCBA, and the filter and the control carrier board are connected together through a filter copper busbar.

[0012] Furthermore, the upper working surface of the water-cooling plate is provided with an uneven shape, the raised portion corresponds to the power device in the first EV switching power module, there is an annular water channel inside the water-cooling plate, and the bottom surface of the water channel has an embedded bottom plate, which is assembled to the lower shell by welding technology. The bottom plate is flush with the bottom surface of the water channel, forming a flat lower working surface of the water-cooling plate.

[0013] Furthermore, the water-cooling plate also includes a water inlet and a water outlet extending from the main body, with threads inside. There are multiple first-type threaded holes on the four sides of the water-cooling plate, corresponding to the positions of the threaded holes in the boss of the lower shell. There are multiple stepped studs on the working surface of the water-cooling plate for supporting and installing the EV switching power module, and there are multiple second-type threaded holes on the lower working surface for installing the aluminum base plate.

[0014] Furthermore, the raised portion on the uneven surface of the aluminum substrate corresponds to the position of the power device in the second switch EV power module, and it also includes a plurality of stepped studs for supporting and installing the second EV switch power module. It also includes a plurality of threaded holes, the size and position of which correspond to the second type of threaded holes on the lower working surface of the water-cooling plate. The flat side of the aluminum substrate can be locked to the lower working surface of the water-cooling plate with screws.

[0015] Furthermore, there is heat dissipation glue between the first EV switching power module and the upper working surface of the water cooling plate, there is thermal conductive silicone grease between the lower working surface of the water cooling plate and the flat surface of the aluminum substrate, and there is heat dissipation glue between the concave and convex surface of the substrate and the second EV switching power module.

[0016] The technical effects achieved by this utility model compared to the existing structural design are:

[0017] The EV switching power supply module structure provided by the utility model has two EV switching power supply modules installed in parallel on the upper and lower working surfaces of the water-cooled plate, respectively. The structure has good heat dissipation effect, expanded power, high integration, fewer overall structure connections, and convenient assembly. It is smaller in size and lighter in weight than the existing power supply structure of the same power on the market, and contributes to the development of high-power EV switching power supplies. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded structural diagram of the EV switching power supply module provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the upper cover structure of the EV switching power module provided by the utility model;

[0020] Figure 3 This is a schematic diagram of the lower housing structure of the EV switching power module provided by the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the water cooling plate provided by the utility model;

[0022] Figure 5 This is an exploded schematic diagram of the bottom surface of the water-cooling plate provided by the present invention;

[0023] Figure 6 This is an exploded diagram of the water-cooling plate, aluminum base plate, and EV switching power supply module provided by the present invention;

[0024] Figure 7 This is a schematic diagram of the completed assembly of the water cooling plate, aluminum base plate and EV switching power supply module provided by the utility model;

[0025] Figure 8 This is a schematic diagram of the overall structure of the EV switching power supply module provided by the utility model. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solutions of the present invention in detail.

[0027] as follows Figure 1 In the figure, the EV switching power module structure includes an upper cover 100, a lower shell 200, an assembled water cooling plate, an aluminum substrate and two EV switching power modules 300, and also includes an input terminal 402, an output positive terminal 403, an output negative terminal 404, and a signal terminal 405. Figure 6 、 Figure 7 In the figure, the first EV switching power supply module 330 and the second EV switching power supply module 340 are two EV switching power supply modules of the same specification. The structure is described with reference to 330. It includes two power modules 331, a control carrier board 332, and a filter 333. The power modules 331 and the control carrier board 332 are assembled together through plug-in connectors on the PCBA. The filter 333 and the control carrier board 332 are connected together through filter copper busbars. The positive and negative outputs of the power modules are connected together using the positive output copper busbar 334 and the negative output copper busbar 335, respectively. The input, output, and signal control of the first and second EV switching power supply modules are connected together to form a parallel structure.

[0028] as follows Figure 2 In the embodiment, there are multiple screw holes 101 on the flange edge of the upper cover 100, and screws can be used to lock the upper cover to the lower shell; Figure 3 In the figure, the lower shell 200 is a pentahedron with an open top, with two mounting brackets 201 on each side. The front side has an input port 202, an output positive port 203, an output negative port 204 and a signal port 205, and the rear side has a water inlet 206 and a water outlet 207. There are several screw holes 208 on the flange edge around the top of the lower shell, which correspond to the positions of the screw holes 101. The upper cover can be fixed to the lower shell with screws. There is a circle of grooves 209 on the inner side of the flange for installing sealing strips or sealants. After the upper cover is installed, a good seal can be achieved. The front and rear inner walls of the lower shell also include multiple bosses 210 for supporting the water-cooled plate. There are threaded holes 211 in the bosses, and the water-cooled plate can be locked to the lower shell with screws.

[0029] as follows Figure 4 、 Figure 5 In the embodiment, the upper working surface of the water-cooling plate 310 is provided with an uneven shape, the raised portion 311 corresponds to the power device in the first EV switching power module 330, and it also includes a plurality of stepped studs 312 for supporting and mounting the first EV switching power module 330. The water-cooling plate has a plurality of first-type threaded holes 313 on the periphery thereof, which are adapted to the threaded holes in the boss in the lower shell. The water-cooling plate has an annular water channel 314 inside, and an embedded bottom plate 315 and support holes 316A on the bottom surface of the water channel. 315 and 316A are mounted to the lower shell by welding technology. The bottom plate 315 is flush with the bottom surface of the water channel, forming a flat lower working surface of the water-cooling plate, so that the water channel forms an enclosed space. The lower working surface of the water-cooling plate also includes a plurality of second-type threaded holes 316 for mounting the base plate to the lower working surface of the water-cooling plate with screws. The water-cooling plate also includes a water inlet 317 and a water outlet 318 extending from the main body, both of which are threaded.

[0030] Figure 6 In the figure, one side of the aluminum substrate 320 is uneven and the other side is flat. The raised part corresponds to the position of the power device in the second EV switching power module 340. It also includes a plurality of stepped studs 321 for supporting and installing the second EV switching power module 340. It also includes a plurality of threaded holes 322, which correspond one-to-one to the positions of the second threaded holes 316 of the water cooling plate; the water inlet connector 317A and the water outlet connector 318A are respectively installed on the water inlet 317 and the water outlet 318 of the water cooling plate.

[0031] During assembly, apply a layer of thermal grease evenly on the lower working surface of the water-cooled plate, and use screws to lock the flat side of the aluminum substrate to the lower working surface of the water-cooled plate; apply heat dissipation glue on the raised part of the working surface of the water-cooled plate, and place the first EV switching power module. The step of the step stud supports the first EV switching power module, and use screws to lock the first EV power module to the upper working surface of the water-cooled plate; apply heat dissipation glue on the raised part of the concave and convex side of the aluminum substrate, and place the second EV switching power module. The step of the step stud supports the second EV switching power module and tightens it with screws; put the water-cooled plate with the EV switching power module installed into the lower shell, and the boss inside the lower shell supports the water-cooled plate, and use screws to fix the water-cooled plate to the lower shell; the input terminal 402 is connected to the filter of the EV switching power modules 330 and 340 through a wire, and is used The screws are locked to the input port 202 of the lower shell, the output positive terminal 403 is stuck between the output positive copper bars of the EV switching power supply 330 and 340 and locked with screws, the output positive terminal is screwed to the output positive port 203 of the lower shell, the output negative terminal 404 is stuck between the output negative copper bars of the EV switching power supply module 330 and 340 and locked with screws, and the output negative terminal is screwed to the output negative port 204 of the lower shell. The signal terminal 405 is connected to the carrier board of the EV switching power supply module 330 and 340 through a wire and a terminal block, and is screwed to the signal port 205 of the lower shell, thereby realizing the parallel connection of the circuits of the EV switching power supply modules 330 and 340; place a sealing ring in the groove on the top of the lower shell or apply sealant, then put on the upper cover and screw the upper cover to the lower shell.

[0032] Although specific implementation examples of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that various changes or modifications may be made to these implementation examples without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is defined by the appended claims.

Claims

1. An EV switching power supply module structure, characterized in that: It includes an upper cover, a lower shell, a water-cooled plate, two first and second EV switching power modules of the same specifications, and an aluminum base plate. One side of the aluminum base plate is uneven and the other side is flat. The flat side is installed on the lower working surface of the water-cooled plate. The working surface of the water-cooled plate is uneven. The first EV switching power module is screwed to the upper working surface of the water-cooled plate, and the second EV switching power module is screwed to the uneven side of the aluminum base plate. The input, output and signal control of the first and second EV switching power modules are respectively connected together to form a parallel structure. After the aluminum base plate, water-cooled plate and two EV power modules are assembled, they are placed in the lower shell.

2. The EV switching power supply module structure according to claim 1, characterized in that: There are multiple threaded holes on the flange edge of the upper cover, and screws can be used to lock the upper cover to the lower shell.

3. The EV switching power module structure according to claim 1, characterized in that: The lower shell is a pentahedron with an open top, with two mounting brackets on each of its left and right sides, an input port, a positive output port, a negative output port and a signal port on the front side, and a water inlet port and a water outlet port on the rear side.

4. The EV switching power module structure according to claim 1, wherein: There are several screw holes on the flange around the top of the lower shell, which correspond to the positions of the screw holes in claim 2. There is a circle of grooves on the inner side of the flange for installing sealing strips or sealants.

5. The EV switching power module structure according to claim 1, characterized in that: The front and rear inner side walls of the lower shell are provided with bosses for supporting the water cooling plate. The bosses are provided with threaded holes, and the water cooling plate can be locked into the lower shell with screws.

6. The EV switching power supply module structure according to claim 1, characterized in that: The EV power module includes two power modules, a control carrier board and a filter. The power modules and the control carrier board are assembled together through plug-ins on the PCBA, and the filter and the control carrier board are connected together through a filter copper busbar.

7. The EV switching power module structure according to claim 1, characterized in that: The upper working surface of the water-cooling plate is provided with an uneven shape. The raised parts correspond to the power devices in the first EV power module. There is a circular water channel inside the water-cooling plate, and an embedded base plate on the bottom of the water channel. It is assembled to the lower shell through welding technology. The base plate is flush with the bottom of the water channel, forming a flat lower working surface of the water-cooling plate.

8. The EV switching power supply module structure according to claim 1, characterized in that: The water-cooling plate also includes a water inlet and a water outlet extending from the main body, with threads inside. There are multiple first-type threaded holes on the four sides of the water-cooling plate, corresponding to the positions of the threaded holes in the boss of the lower shell. There are multiple stepped studs on the working surface of the water-cooling plate for supporting and installing the EV switching power module. There are multiple second-type threaded holes on the four sides of the lower working surface for installing the aluminum base plate.

9. The EV switching power module structure according to claim 1, wherein: On the uneven side of the aluminum substrate, the raised part corresponds to the position of the power device in the second switch EV power module. It also includes multiple stepped studs for supporting and installing the second EV switch power module. It also includes multiple threaded holes, the size and position of which correspond to the second type of threaded holes on the lower working surface of the water cooling plate. Screws can be used to lock the flat side of the aluminum substrate to the lower working surface of the water cooling plate.

10. The EV switching power supply module structure according to claim 1, characterized in that: There is heat dissipation glue between the first EV switching power module and the working surface of the water cooling plate, there is thermal grease between the lower working surface of the water cooling plate and the flat surface of the aluminum substrate, and there is heat dissipation glue between the concave and convex surface of the aluminum substrate and the second EV switching power module.

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