EV switching power supply module structure
By installing two EV switching power supply modules in parallel on the water-cooled plate, and using the concave and convex surface structures of the aluminum substrate and the water-cooled plate, combined with the heat dissipation material, the problem of space and cost increase in the EV switching power supply module in the prior art is solved. , realizes efficient heat dissipation and high integration parallel structure, meeting the needs of high-power output.
Patent Information
- Application Number
- CN202411608133.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2024-12-24
AI Technical Summary
When expanding power, existing EV switching power modules need to add an aluminum shell and cooling waterway, resulting in increased space and cost, which cannot meet the market's demand for efficient cooling and low cost.
Design an EV switching power supply module structure, by installing two EV switching power supply modules of the same specifications in parallel on the water-cooled plate, and using the concave and convex surface structure of the aluminum substrate and the water-cooled plate, combining heat dissipation glue and thermal conductivity grease to achieve efficient heat dissipation and Highly integrated parallel structure.
It realizes an EV switching power module structure with efficient heat dissipation, small size and light weight, reduces costs, meets the demand for high-power output, and provides an efficient and economical solution to the market.
Smart Images
Figure CN119183278A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of high-power switching power supplies, and 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. In order to prevent dust, water, heat and shield interference, EV switching power supply modules are usually installed in an aluminum alloy shell. In order to increase power, EV switching power supply modules need good heat dissipation. Water cooling is currently a more economical and commonly used 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 may be to connect two EV switching power supplies of the same specification in parallel. This requires two aluminum shells and heat dissipation channels, which requires high space on the client side. At the same time, the cost increases exponentially. Obviously, neither of these can be accepted by customers.
[0003] In order to solve the above-mentioned problem of power expansion, the present invention proposes a new EV switching power module structure to meet the market demand for high-power EV switching power modules. Summary of the invention
[0004] The technical problem to be solved by the present invention 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: An EV switch power module structure comprises an upper cover, a lower shell, a water-cooling plate, two first and second EV switch power modules of the same specification, and an aluminum substrate. One side of the aluminum substrate is uneven and the other side is flat. The flat side 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 switch power module is screwed to the upper working surface of the water-cooling plate. The second EV switch power module is screwed to the uneven side of the aluminum substrate. The input, output and signal control of the first and second EV switch power modules are respectively connected together to form a parallel structure. After the aluminum substrate, the water-cooling plate and the two EV power modules are assembled, they are placed in the lower shell.
[0006] Furthermore, a plurality of threaded holes are arranged on the flange edge of the upper cover, and the upper cover can be locked to the lower shell body by screws.
[0007] Furthermore, the lower shell is a pentahedron with an opening at the 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.
[0008] Furthermore, there are a plurality of 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, and there is a circle of grooves on the inner side of the flange edge for installing a sealing strip or a sealant.
[0009] Furthermore, there are bosses on the front and rear inner side walls of the lower shell for supporting the water cooling plate, and there are threaded holes in the bosses, so that the water cooling plate can be locked into the lower shell by screws.
[0010] Furthermore, the EV switching power supply module includes two power modules, a control carrier board and a filter. The power module and the control carrier board are assembled together through a plug-in on a PCBA, and the filter and the control carrier board are connected together through a filter copper busbar.
[0011] Furthermore, the upper working surface of the water cooling plate is provided with an uneven shape, the raised part corresponds to the power device in the first EV switching power module, there is an annular water channel inside the water cooling plate, and there is an embedded bottom plate on the bottom of the water channel, which is assembled to the lower shell by welding technology. The bottom plate is flush with the bottom of the water channel to form a flat lower working surface of the water cooling plate.
[0012] 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 lower shell boss. There are multiple step 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.
[0013] Furthermore, on the uneven surface of the aluminum substrate, the raised part corresponds to the position of the power device in the second switch EV power module, and it also includes a plurality of step studs for supporting and installing the second EV switch power module, and also includes a plurality of threaded holes, the size and position of which correspond to the second threaded holes on the lower working surface of the water cooling plate, and the flat side of the aluminum substrate can be locked to the lower working surface of the water cooling plate with screws.
[0014] 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.
[0015] The technical effects achieved by the present invention relative to the existing structural design are as follows: The EV switching power supply module structure provided by the present invention has two EV switching power supply modules installed in parallel on the upper and lower working surfaces of the water-cooled plate, respectively. It 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
[0016] Figure 1 This is an exploded structural diagram of the EV switching power module provided by the present invention; Figure 2 It is a schematic diagram of the upper cover structure of the EV switching power module provided by the present invention; Figure 3 It is a schematic diagram of the lower housing structure of the EV switching power module provided by the present invention; Figure 4 It is a schematic diagram of the structure of the water cooling plate provided by the present invention; Figure 5 It is a schematic diagram of the bottom surface of the water cooling plate provided by the present invention; Figure 6 It is an exploded schematic diagram of the water cooling plate, aluminum substrate and EV switch power module provided by the present invention; Figure 7 It is a schematic diagram of the assembly of the water cooling plate, the aluminum substrate and the EV switching power supply module provided by the present invention; Figure 8 This is a schematic diagram of the overall structure of the EV switching power supply module provided by the present invention. DETAILED DESCRIPTION
[0017] 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.
[0018] as follows Figure 1 In the embodiment, the EV switch power module structure includes an upper cover 100, a lower shell 200, an assembled water cooling plate, an aluminum substrate and two EV switch 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 switch power module 330 and the second EV switch power module 340 are two EV switch power modules of the same specification. The structure is described with reference to 330, which includes two power modules 331, a control carrier board 332 and a filter 333. The power module 331 and the control carrier board 332 are assembled together through the plug-in on the PCBA, and the filter 333 and the control carrier board 332 are connected together through the filter copper bus. The positive output and negative output of the power module are connected together with the positive output copper bus 334 and the negative output copper bus 335 respectively; the input, output and signal control of the first and second EV switch power modules are connected together to form a parallel structure.
[0019] as follows Figure 2 In the embodiment, there are a plurality of screw holes 101 on the flange edge of the upper cover 100, and the upper cover can be locked to the lower housing by screws; Figure 3In the figure, the lower shell 200 is a pentahedron with an opening at the top, with two mounting brackets 201 on each side, an input port 202, an output positive port 203, an output negative port 204 and a signal port 205 on the front side, a water inlet 206 and a water outlet 207 on the rear side, a plurality of screw holes 208 are arranged on the flange edge around the top of the lower shell, corresponding to the positions of the screw holes 101 one by one, and the upper cover can be fixed to the lower shell by screws, and a circle of grooves 209 for installing sealing strips or sealants are arranged on the inner side of the flange edge, and good sealing can be achieved after the upper cover is installed, and a plurality of bosses 210 are also included on the front and rear inner side walls of the lower shell for supporting the water cooling plate, and threaded holes 211 are arranged in the bosses, and the water cooling plate can be locked into the lower shell by screws.
[0020] 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 further comprises a plurality of stepped studs 312 for supporting and installing the first EV switching power module 330, and a plurality of first-type threaded holes 313 are arranged around the periphery of the water-cooling plate, which are adapted to the threaded holes in the boss in the lower shell; an annular water channel 314 is arranged inside the water-cooling plate, and an embedded bottom plate 315 and supporting holes 316A are arranged on the bottom surface of the water channel, 315 and 316A are mounted on 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 a closed space, and a plurality of second-type threaded holes 316 are arranged on the lower working surface of the water-cooling plate, which are used to install the substrate on the lower working surface of the water-cooling plate with screws; the water-cooling plate further comprises a water inlet 317 and a water outlet 318 extending from the main body, which have threads inside.
[0021] 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 switch power module 340. It also includes a plurality of stepped studs 321 for supporting and installing the second EV switch power module 340, and also includes a plurality of threaded holes 322, which correspond one to one with the positions of the second threaded holes 316 of the water cooling plate; the water inlet joint 317A and the water outlet joint 318A are respectively installed on the water inlet 317 and the water outlet 318 of the water cooling plate.
[0022] During assembly, apply a layer of thermal conductive silicone 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 the first EV power module is locked to the upper working surface of the water-cooled plate with screws; 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, the boss in the lower shell supports the water-cooled plate, and the water-cooled plate is fixed to the lower shell with screws; the input terminal 402 is connected to the filter of the EV switching power modules 330 and 340 through a wire, and the 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, 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 the wire and the terminal block, and is screwed to the signal port 205 of the lower shell, thereby realizing the parallel connection of the lines of the EV switching power supply modules 330 and 340; put the sealing ring in the groove on the top of the lower shell or put the upper cover after applying sealant, and screw the upper cover to the lower shell.
[0023] Although the specific implementation cases of the present invention are described above, those skilled in the art should understand that these are only examples, and various changes or modifications can be made to these implementation cases without departing from the principles and essence of the present invention. Therefore, the protection scope 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 switch power modules of the same specifications, and an aluminum substrate. One side of the aluminum substrate 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 switch power module is screwed on the upper working surface of the water-cooled plate, and the second EV switch power module is screwed on the uneven side of the aluminum substrate. The input, output and signal control of the first and second EV switch power modules are respectively connected together to form a parallel structure. After the aluminum substrate, the water-cooled plate and the two EV power modules are assembled, they are put into the lower shell.
2. An EV switching power supply module structure as claimed in claim 1, characterized in that: The flange edge of the upper cover is provided with a plurality of threaded holes, and the upper cover can be locked to the lower shell body by screws.
3. An EV switching power module structure as claimed in claim 1, characterized in that: The lower shell is a pentahedron with an opening at the 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. An EV switching power module structure as claimed in claim 1, characterized in that: There are several screw holes on the flange edge around the top of the lower shell, which correspond to the positions of the screw holes in claim 2, and there is a circle of grooves on the inner side of the flange edge 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 by screws.
6. An EV switching power module structure as claimed in claim 1, characterized in that: The EV power module includes two power modules, a control carrier board and a filter. The power module and the control carrier board are assembled together through a plug-in on a PCBA, and the filter and the control carrier board are connected together through a filter copper busbar.
7. An EV switching power supply module structure as claimed in claim 1, characterized in that: The upper working surface of the water-cooling plate is provided with uneven shapes. The raised parts correspond to the power devices in the first EV power module. There is a ring-shaped water channel inside the water-cooling plate, and an embedded bottom plate on the bottom of the water channel, which is assembled to the lower shell through welding technology. The bottom plate is flush with the bottom of the water channel to form a flat lower working surface of the water-cooling plate.
8. An EV switching power supply module structure as claimed in claim 1, characterized in that: The water cooling plate also includes a water inlet and a water outlet extending out of 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 lower shell boss. There are multiple step 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. An EV switching power module structure as claimed in claim 1, characterized in that: 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 a plurality of stepped studs for supporting and installing the second EV switch power module. It also includes a plurality of threaded holes, whose size and position correspond to the second 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.
10. An EV switching power module structure as claimed in 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 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 aluminum substrate and the second EV switching power module.