Charging pile and OBC power module thereof

Abstract

The utility model discloses a charging pile and an OBC power module thereof. The OBC power module at least comprises a housing, and a first power board, a second power board, an inductance module, a transformer module and a cold plate assembly which are arranged in the housing. The first power board is located on the first side of the cold plate assembly, the second power board is located on the second side of the cold plate assembly, and the inductor module and the transformer module are located on the first side and / or the second side of the cold plate assembly respectively; the first side and the second side of the cold plate assembly are respectively provided with a concave-convex structure, so that the cold plate assembly can be respectively in adaptive contact with the first power plate, the second power plate, the inductance module and the transformer module for heat exchange, and contact type water-cooling heat dissipation can be realized for the internal power plates and modules of the OBC power module. Compared with an original air cooling heat dissipation mode, more heat can be taken away, the OBC power module is higher in structural integration degree and smaller in size, and therefore the size requirement and the heat dissipation performance requirement of the high-power OBC power module can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging pile technical field especially relates to a charging pile and OBC power module thereof. BACKGROUND

[0002] The existing OBC power module of charging pile reaches 60Kw power, and the volume will be very big, and the existing fan cooling is difficult to meet the heat dissipation performance requirement of high-power OBC power module. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model provides an OBC power module, which can realize water cooling of the internal power board and module of the OBC power module while optimizing and reducing the volume, can take away more heat compared with the original air cooling, and can meet the volume requirement and heat dissipation performance requirement of high-power OBC power module.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] An OBC power module is applied to a charging pile and at least comprises a shell, a first power board, a second power board, an inductor module, a transformer module and a cold plate assembly arranged in the shell.

[0006] The first power board is located at the first side of the cold plate assembly, the second power board is located at the second side of the cold plate assembly, and the inductor module and the transformer module are respectively located at the first side and / or the second side of the cold plate assembly.

[0007] The first side and the second side of the cold plate assembly have respectively concave-convex structures, so that they can be in adaptive contact with the first power board, the second power board, the inductor module and the transformer module respectively.

[0008] Preferably, one side of the first side and the second side of the cold plate assembly is provided with a convex part, and the other side is respectively provided with a first recess and a second recess.

[0009] One of the first power board and the second power board is in contact with the convex part, and the other is in contact with the first side or the second side of the cold plate assembly.

[0010] The transformer module and the inductor module are respectively installed in the first recess and the second recess.

[0011] Preferably, the convex part is located at the first side of the cold plate assembly, and the first recess and the second recess are respectively located at the second side of the cold plate assembly.

[0012] The inductor module and the transformer module are respectively electrically connected with the second power board.

[0013] Preferably, the number of protrusions is multiple, and arranged in parallel along the width direction of the shell;

[0014] The first power plate is in one-to-one contact with the plurality of protrusions on the first side of the cold plate assembly through a plurality of first semiconductor devices;

[0015] The first groove and the second groove are arranged in parallel along the width direction of the shell;

[0016] The second power plate is in contact with the second side of the cold plate assembly through a plurality of second semiconductor devices.

[0017] Preferably, the cold plate assembly has a liquid inlet, a cooling liquid circulation channel and a liquid outlet connected in sequence; wherein the liquid inlet and the liquid outlet are respectively located on the outer wall of the shell, and the cooling liquid circulation channel is a serpentine channel;

[0018] Each of the protrusions is provided with a protrusion channel and is in communication with the cooling liquid circulation channel.

[0019] Preferably, the cold plate assembly comprises a first plate body and a second plate body;

[0020] The first plate surface of the first plate body is assembled with the second plate surface of the second plate body; wherein the first plate surface of the first plate body is provided with the cooling liquid circulation channel, and the second plate surface is provided with the first groove and the second groove; the first plate surface of the second plate body is provided with a plurality of protrusions.

[0021] Preferably, the cold plate assembly further comprises a plurality of first flow guide strip assemblies and a plurality of second flow guide strip assemblies;

[0022] The plurality of first flow guide strip assemblies are respectively arranged on the first plate surface of the first plate body and are located in the plurality of sections of the cooling liquid circulation channel in one-to-one correspondence;

[0023] The plurality of second flow guide strip assemblies are arranged in the protrusion channels of the plurality of protrusions in one-to-one correspondence.

[0024] Preferably, the cold plate assembly is provided with a through slot, and the through slot is staggered with the concave-convex structure of the cold plate assembly;

[0025] The first power plate and the second power plate are electrically connected through a connecting copper bar, and the connecting copper bar passes through the through slot of the cold plate assembly.

[0026] Preferably, the shell comprises a casing, an upper cover and a lower cover;

[0027] The upper end and the lower end of the casing are both open;

[0028] The cold plate assembly is arranged in the middle of the cabinet, the first power plate is arranged on the lower side of the cold plate assembly, and the second power plate, the inductor module and the transformer module are arranged on the upper side of the cold plate assembly.

[0029] The upper cover is assembled on the upper end of the cabinet.

[0030] The lower cover is assembled on the lower end of the cabinet.

[0031] A charging pile comprises an OBC power module, and the OBC power module is the OBC power module as described above.

[0032] From the above technical solution, it can be seen that the OBC power module provided by the utility model separates the first power plate and the second power plate through the cold plate assembly, and the inductor module and the transformer module can be arranged on the same side or different sides of the cold plate assembly, and the concave-convex structures on both sides of the cold plate assembly can be in contact with the first power plate, the second power plate, the inductor module and the transformer module respectively to perform heat exchange, which can realize contact water cooling heat dissipation for the internal power plates and modules of the OBC power module, more heat can be taken away compared with the original air cooling heat dissipation, the structure integration of the OBC power module is higher, and the volume is smaller, so that the volume requirement and the heat dissipation performance requirement of the high-power OBC power module can be met. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can be used to obtain other drawings without creative labor for the ordinary skilled in the art.

[0034] Figure 1 The structure schematic view of the OBC power module provided by the utility model embodiment is shown in the figure.

[0035] Figure 2 The structure explosion view of the OBC power module provided by the utility model embodiment is shown in the figure.

[0036] Figure 3 The structure sectional view of the OBC power module provided by the utility model embodiment is shown in the figure.

[0037] Figure 4 The structure schematic view of the OBC power module hiding the first main power PCB plate provided by the utility model embodiment is shown in the figure.

[0038] Figure 5 The structure schematic view of the OBC power module hiding the second main power PCB plate provided by the utility model embodiment is shown in the figure.

[0039] Figure 6 An installation schematic view of the cold plate assembly in the shell is provided for the embodiment of the utility model;

[0040] Figure 7 A sectional view of the cold plate assembly in the shell is provided for the embodiment of the utility model;

[0041] Figure 8 A structure schematic view of the cold plate assembly is provided for the embodiment of the utility model;

[0042] Figure 9 Another structure schematic view of the cold plate assembly is provided for the embodiment of the utility model;

[0043] Figure 10 A back schematic view of the first plate body is provided for the embodiment of the utility model;

[0044] Figure 11 A structure schematic view of the second plate body is provided for the embodiment of the utility model.

[0045] Wherein, 1 is a shell, 1.1 is a casing, 1.2 is an upper cover, 1.3 is a lower cover, 2 is an inductance module, 3 is a transformer module, 4 is a cold plate assembly, 4.1 is a first plate body, 4.11 is a first recess, 4.12 is a second recess, 4.13 is a third recess, 4.14 is a cooling liquid circulation flow channel, 4.141 is a first section flow channel, 4.142 is a second section flow channel, 4.143 is a third section flow channel, 4.144 is a fourth section flow channel, 4.2 is a second plate body, 4.21 is a protrusion, 4.211 is a protrusion flow channel, 4.3 is an inlet, 4.4 is an outlet, 4.5 is a first flow guide strip, 4.6 is a second flow guide strip, 4.7 is a through groove, 5 is a connecting copper bar, 6 is a first main power PCB, 7 is a second main power PCB, 8 is a first MOS tube assembly, 9 is a second MOS tube assembly, 10 is a display panel, and 11 is a ceramic substrate. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0047] The OBC power module provided by the embodiment of the utility model can be applied to a charging pile, such as Figure 1 and Figure 2As shown, at least including: a shell 1 and a first power plate, a second power plate, an inductor module 2, a transformer module 3 and a cold plate assembly 4 arranged in the shell 1;

[0048] The first power plate is located on the first side of the cold plate assembly 4, the second power plate is located on the second side of the cold plate assembly 4, and the inductor module 2 and the transformer module 3 are respectively located on the first side and / or the second side of the cold plate assembly 4;

[0049] Wherein, the first side and the second side of the cold plate assembly 4 have concave-convex structures respectively, so that they can be in contact with the first power plate, the second power plate, the inductor module 2 and the transformer module 3 respectively.

[0050] It should be noted that, as Figure 2 As shown, the first power plate can be a first main power PCB plate 6, and the second power plate can be a second main power PCB plate 7; wherein the matching relationship of the first main power PCB plate 6, the second main power PCB plate 7, the inductor module 2 and the transformer module 3 can be the prior art; of course, the number of transformer modules 3 can be two;

[0051] The inductor module 2 and the transformer module 3 can be respectively located on the first side or the second side of the cold plate assembly 4, or one of the inductor module 2 and the transformer module 3 is located on the first side of the cold plate assembly 4, and the other is located on the second side of the cold plate assembly 4; wherein the first side of the cold plate assembly 4 can be the lower side of the cold plate assembly 4, and the second side can be the upper side of the cold plate assembly 4, as Figure 3 As shown, the first main power PCB plate 6 can be located on the lower side of the cold plate assembly 4, the second main power PCB plate 7 can be located on the upper side of the cold plate assembly 4, and the inductor module 2 and the two transformer modules 3 can be respectively located on the upper side of the cold plate assembly 4;

[0052] The first side and the second side of the cold plate assembly 4 have concave-convex structures respectively, that is, the two sides (upper and lower sides) of the cold plate assembly 4 are three-dimensional structures, so that it (the cold plate assembly 4) can be in contact with the first main power PCB plate 6, the second main power PCB plate 7, the inductor module 2 and the two transformer modules 3 respectively to exchange heat, so that the internal functional devices of the OBC power module can be contact-cooled, which has better cooling effect than the original air-cooled cooling, so as to meet the cooling performance requirements of the high-power OBC power module;

[0053] In addition, the cold plate assembly 4 has a cooling liquid circulation flow channel for circulating cooling liquid to exchange heat with the above-mentioned power plates and modules, and the inlet and outlet of the cooling liquid can be located on the outside of the shell 1, facilitating the inflow and outflow of the cooling liquid;

[0054] In addition, the first power plate and the second power plate are separately installed, heat dissipation can be achieved, heat is not easy to gather, the heat dissipation effect is good, and the heat generators of the first power plate and the second power plate are all towards the cold plate assembly 4, so that heat is not easy to be transmitted to the shell 1.

[0055] That is, the present OBC power module separates the first power plate and the second power plate through the cold plate assembly 4, and the inductor module 2 and the transformer module 3 can be located on the same side or different sides of the cold plate assembly 4, and the concave-convex structures on both sides of the cold plate assembly 4 can be in contact with the first power plate, the second power plate, the inductor module 2 and the transformer module 3 respectively to exchange heat, so that water cooling heat dissipation can be achieved for the internal power plates and modules of the OBC power module, that is, contact water cooling heat dissipation can be achieved for the internal components of the OBC power module, in addition, the power devices are respectively installed on both sides of the cold plate assembly through the first power plate and the second power plate, so that the integration of the OBC power module is higher, the volume is smaller, more heat can be taken away compared with the original air cooling heat dissipation, the volume requirement and the heat dissipation performance requirement of the high-power OBC power module can be met at the same time, so that the high-power OBC power module operates more stably and has a longer service life.

[0056] In the present scheme, as shown in Figure 9 One side of the first side and the second side of the cold plate assembly 4 is provided with a convex 4.21, as shown in Figure 8 The other side is respectively provided with a first recess 4.11 and a second recess 4.12;

[0057] As shown in Figure 3 One of the first power plate and the second power plate is in contact with the convex 4.21, and the other is in contact with the first side or the second side of the cold plate assembly 4;

[0058] The transformer module 3 and the inductor module 2 are embedded in the first recess 4.11 and the second recess 4.12 for installation.

[0059] As shown in Figure 9 The convex 4.21 is located on the first side of the cold plate assembly 4, as shown in Figure 8 The first recess 4.11 and the second recess 4.12 are respectively located on the second side of the cold plate assembly 4; the inductor module 2 and the transformer module 3 are respectively electrically connected with the second power plate.

[0060] As shown in Figure 9 The lower side (lower plate surface) of the cold plate assembly 4 can be provided with the convex 4.21, as shown in Figure 3As shown, the first main power PCB board 6 can be in contact with the protrusions 4.21 on the lower side of the cold plate assembly 4 for heat exchange; that is, the cold plate assembly 4 is spaced apart from the first main power PCB board 6, and the contact can be achieved through the protrusions 4.21 on the lower plate surface of the cold plate assembly 4 to achieve contact water cooling heat dissipation for the first main power PCB board 6; as shown in Figure 8 As shown, the upper side (upper plate surface) of the cold plate assembly 4 can be provided with a first recess 4.11, a second recess 4.12 and a third recess 4.13 respectively, for realizing embedded installation of the transformer module 3, the inductor module 2 and another transformer module 3 one by one, which can also serve as the installation slot of the corresponding module; of course, the transformer module 3 is in contact with the first recess 4.11 for heat exchange, the inductor module 2 is in contact with the second recess 4.12 for heat exchange, and another transformer module 3 is in contact with the third recess 4.13 for heat exchange, which can realize contact water cooling heat dissipation for the inductor module 2 and the two transformer modules 3; and the upper side (the remaining part of the upper plate surface) of the cold plate assembly 4 is also in contact with the second main power PCB board 7 for heat exchange, which can realize contact water cooling heat dissipation for the second main power PCB board 7, so as to quickly take away the heat of the functional devices in the OBC power module, and make the OBC power module have better heat dissipation effect; at the same time, the first main power PCB board 6 and the second main power PCB board 7 are arranged separately, and the inductor module 2 and the two transformer modules 3 are embeddedly installed, which can make the structure of the OBC power module compact, and thus help to reduce the volume of the OBC power module.

[0061] Specifically, as shown in Figure 3 The transformer module 3 is in contact with the groove bottom and side wall of the first recess 4.11;

[0062] The inductor module 2 is in contact with the groove bottom and side wall of the second recess 4.12;

[0063] The other transformer module 3 is in contact with the groove bottom and side wall of the third recess 4.13.

[0064] It should be noted that the structures of the first recess 4.11, the second recess 4.12 and the third recess 4.13 of the cold plate assembly 4 can refer to the structures shown in Figure 8 The structure shape of the first transformer module 3 can match the structure shape of the first recess 4.11 of the cold plate assembly 4, so that the transformer module 3 can be adaptively and fitly installed in the first recess 4.11; wherein the bottom of the transformer module 3 can be in contact with the groove bottom of the first recess 4.11, two opposite side walls can be in contact with two corresponding opposite side walls of the first recess 4.11 one by one, and the other two opposite side walls can be in contact with the other two corresponding opposite side walls of the first recess 4.11 one by one;

[0065] The structural shape of the inductor module 2 can match the structural shape of the second recess 4.12 of the cold plate assembly 4, so that the inductor module 2 can be adaptively and closely installed in the second recess 4.12; wherein the bottom of the inductor module 2 can be in contact with the groove bottom of the second recess 4.12, two opposite side walls can be in one-to-one contact with the corresponding two opposite side walls of the second recess 4.12, and the other two opposite side walls can be in one-to-one contact with the corresponding other two opposite side walls of the second recess 4.12.

[0066] The structural shape of the second transformer module 3 can match the structural shape of the third recess 4.13 of the cold plate assembly 4, so that the transformer module 3 can be adaptively and closely installed in the third recess 4.13; wherein the bottom of the transformer module 3 can be in contact with the groove bottom of the third recess 4.13, two opposite side walls can be in one-to-one contact with the corresponding two opposite side walls of the third recess 4.13, and the other two opposite side walls can be in one-to-one contact with the corresponding other two opposite side walls of the third recess 4.13.

[0067] That is, the above scheme is designed to increase the contact area of the inductor module 2 and the water-cooled assembly 4, and to increase the contact area of each transformer module 3 and the water-cooled assembly 4, so that the inductor module 2 and each transformer module 3 can obtain better water-cooled heat dissipation effect, and of course, this also helps to realize the rapid positioning and installation of the inductor module 2 and each transformer module 3. Among them, as shown in Figure 8 Each recess of the water-cooled assembly 4 is provided with a plurality of parallel distributed partitions for positioning and cooperating with the corresponding internal gaps of the module, for example, when the inductor module 2 is installed in the first recess 4.11, the plurality of partitions of the first recess 4.11 are located in the plurality of gaps inside the inductor module 2.

[0068] Further, as shown in Figure 9 The number of protrusions 4.21 is multiple, and they are parallelly distributed along the width direction of the shell 1;

[0069] As shown in Figure 3 The first power plate is in one-to-one contact with the plurality of protrusions 4.21 on the first side of the cold plate assembly 4 through a plurality of first semiconductor devices;

[0070] As shown in Figure 6 The first recess 4.11, the second recess 4.12 and the third recess 4.13 are parallelly distributed along the width direction of the shell 1;

[0071] As shown in Figure 3 The second power plate is in contact with the second side of the cold plate assembly 4 through a plurality of second semiconductor devices.

[0072] It should be noted that, as described above, the first power plate can be a first main power PCB plate 6, as shown in Figure 4As shown, the first semiconductor device can be a first MOSFET assembly 8, meaning the first main power PCB board 6 can contact the multiple protrusions 4.21 on the first side of the cold plate assembly 4 one by one through multiple first MOSFET assemblies 8. This allows the first power board to make multiple contacts with the first side of the cold plate assembly 4, increasing the contact area between the first power board and the first side of the cold plate assembly 4, thus enabling the first power board to achieve better water cooling performance. The structure of the multiple protrusions 4.21 on the first side of the cold plate assembly 4 can be referred to... Figure 9 As shown;

[0073] Furthermore, as mentioned above, the second power board can be a second main power PCB board 7, such as... Figure 5 As shown, the second semiconductor device can be a second MOSFET assembly 9, meaning the second main power PCB board 7 can contact multiple parts on the second side of the cold plate assembly 4 through multiple second MOSFET assemblies 9. This allows for multiple contacts between the second power board and the second side of the cold plate assembly 4, increasing the contact area and improving the water cooling performance of the second power board. Of course, as... Figure 6 As shown, the first part between the first groove 4.11 and the second groove 4.12, the second part between the second groove 4.12 and the third groove 4.13, the third part located outside the first groove 4.11, and the fourth part located outside the third groove 4.13 in the cold plate assembly 4 can all serve as multiple protrusions on the second side of the cold plate assembly 4. That is, these protrusions are used to contact the multiple second MOS transistor assemblies 9 of the second main power PCB board 7 one by one.

[0074] Furthermore, such as Figure 8 and Figure 10 As shown, the cold plate assembly 4 has a liquid inlet 4.3, a coolant circulation channel 4.14, and a liquid outlet 4.4 connected in sequence; wherein, as... Figure 1 As shown, the liquid inlet 4.3 and the liquid outlet 4.4 are located on the outer wall of the housing 1, respectively. Figure 10 As shown, the coolant circulation channel 4.14 is a serpentine channel;

[0075] like Figure 11 As shown, each protrusion 4.21 has a protrusion flow channel 4.211 inside, and is connected to the coolant circulation flow channel 4.14.

[0076] It should be noted that, as Figure 8 As shown, the liquid inlet 4.3 of the cold plate assembly 4 can be a liquid inlet pipe, and the liquid outlet 4.4 can be a liquid outlet pipe; wherein, the first end of the liquid inlet pipe can be connected to the liquid inlet of the coolant circulation channel 4.14, and the second end can be located outside the housing 1 and used to introduce coolant, and can also be used to connect with the liquid inlet pipe of the coolant circulation system.

[0077] The first end of the liquid outlet pipe can be connected with the liquid outlet of the cooling liquid circulation flow channel 4.14, and the second end can be located outside the shell 1 and used for flowing out the cooling liquid, and can be used for connecting with the liquid return pipe of the cooling liquid circulation system;

[0078] As shown in Figure 3 , the cooling liquid circulation flow channel 4.14 is located inside the cold plate assembly 4, so that the cooling liquid circulates through the inside of the cold plate assembly 4 and contacts the devices and modules inside the OBC power module, for taking away the heat of these devices and modules; and in order to increase the flow of the cooling liquid in the cooling liquid circulation flow channel 4.14, the cooling liquid circulation flow channel 4.14 can adopt a serpentine flow channel, that is, the cooling liquid circulation flow channel 4.14 can be distributed in a serpentine shape; wherein the structure of the cooling liquid circulation flow channel 4.14 can refer to Figure 10 , the flow direction of the cooling liquid in the cooling liquid circulation flow channel 4.14 can refer to the arrow direction in Figure 10 ; of course, the cooling liquid circulation flow channel 4.14 can also adopt other distribution forms, such as a spiral distribution;

[0079] As shown in Figure 11 , the plurality of protrusions 4.21 on the first side of the cold plate assembly 4 are each provided with a protrusion flow channel 4.211, that is, the plurality of protrusions 4.21 are each hollow structures, and the protrusion flow channel 4.211 of each protrusion 4.21 is in communication with the corresponding flow channel of the cooling liquid circulation flow channel 4.14, so that the cooling liquid circulates through the cooling liquid circulation flow channel 4.14 and the protrusion flow channel 4.211 of the plurality of protrusions 4.21, thereby achieving water cooling heat dissipation for the components inside the OBC power module; as shown in Figure 9 , the protrusion flow channels 4.211 of the two longer protrusions 4.21 on the first side of the cold plate assembly 4 can be respectively in communication with the flow channels in the cooling liquid circulation flow channel 4.14 located in the groove bottom of the first groove 4.11, and the protrusion flow channels 4.211 of the two shorter protrusions 4.21 can be respectively in communication with the flow channels in the cooling liquid circulation flow channel 4.14 located in the groove bottom of the second groove 4.12.

[0080] That is, the cold plate assembly 4 adopts a three-dimensional flow channel, which has both protrusion flow channels and recess flow channels, not only can realize adaptive contact with the first power plate distributed at intervals, but also can realize embedded installation of the inductor module 2 and the two transformer modules 3, thereby improving the heat dissipation effect of the OBC power module and helping to make the OBC power module compact.

[0081] In this scheme, as shown in Figure 9 , the cold plate assembly 4 includes a first plate body 4.1 and a second plate body 4.2;

[0082] The first plate surface of the first plate body 4.1 is assembled with the second plate surface of the second plate body 4.2; wherein, as shown in Figure 10As shown in the figure, the first plate surface of the first plate body 4.1 is provided with a cooling liquid circulation flow channel 4.14, such as Figure 8 As shown in the figure, the second plate surface of the first plate body 4.1 is provided with a first groove 4.11, a second groove 4.12 and a third groove 4.13; such as Figure 9 As shown in the figure, the first plate surface of the second plate body 4.2 is provided with a plurality of protrusions 4.21.

[0083] It should be noted that, as Figure 9 As shown in the figure, the cold plate assembly 4 is composed of the first plate body 4.1 and the second plate body 4.2; wherein the first plate body 4.1 can be the upper plate body, the first plate surface of the first plate body 4.1 can be the lower plate surface of the first plate body 4.1, and the second plate surface can be the upper plate surface, such as Figure 10 That is, the lower plate surface of the first plate body 4.1 is provided with a cooling liquid circulation flow channel 4.14, of course, after the first plate body 4.1 and the second plate body 4.2 are assembled, the cooling liquid circulation flow channel 4.14 of the lower plate surface of the first plate body 4.1 forms a closed flow channel; such as Figure 8 That is, the upper plate surface of the first plate body 4.1 is respectively provided with a first groove 4.11, a second groove 4.12 and a third groove 4.13; of course, as Figure 8 As shown in the figure, the first plate body 4.1 has a certain thickness, which is greater than the thickness of the second plate body 4.2; in addition, the second plate body 4.2 can be the lower plate body, the first plate surface of the second plate body 4.2 can be the lower plate surface of the second plate body 4.2, and the second plate surface can be the upper plate surface; such as Figure 9 That is, the lower plate surface of the second plate body 4.2 is provided with a plurality of protrusions 4.21; of course, the cold plate assembly 4 is designed in this way, which is simple in structure and easy to manufacture.

[0084] Specifically, as Figure 10 And Figure 11 As shown in the figure, the cold plate assembly further comprises: a plurality of first flow guide strip assemblies 4.5 and a plurality of second flow guide strip assemblies 4.6;

[0085] The plurality of first flow guide strip assemblies 4.5 are respectively arranged on the first plate surface of the first plate body 4.1, and are respectively arranged in the plurality of flow channels of the cooling liquid circulation flow channel 4.14;

[0086] The plurality of second flow guide strip assemblies 4.6 are respectively arranged in the protrusion flow channels 4.211 of the plurality of protrusions 4.21.

[0087] It should be noted that, as Figure 10As shown, the cooling liquid circulation flow channel 4.14 can be sequentially divided into a first section flow channel 4.141, a second section flow channel 4.142, a third section flow channel 4.143, and a fourth section flow channel 4.144 along the cooling liquid flow direction; wherein, the first section flow channel is located in the groove bottom of the first groove 4.11 and the outer side portion of the first groove 4.11 (the third portion of the above-mentioned cold plate assembly 4), the second section flow channel is located in the groove bottom of the second groove 4.12 and the inner side portion of the first groove 4.11 (the first portion of the above-mentioned cold plate assembly 4), the third section flow channel is located in the groove bottom of the third groove 4.13 and the inner side portion of the third groove 4.13 (the second portion of the above-mentioned cold plate assembly 4), and the fourth section flow channel is located in the outer side portion of the third groove 4.13 (the fourth portion of the above-mentioned cold plate assembly 4); the number of the first flow guide strip assembly 4.5 can be four, and the four first flow guide strip assemblies 4.5 are located in the first section flow channel 4.141, the second section flow channel 4.142, the third section flow channel 4.143, and the fourth section flow channel 4.144 respectively, which can guide the flow of each section of the cooling liquid circulation flow channel 4.14, and thus facilitate the circulation of the cooling liquid through the cooling liquid circulation flow channel 4.14; wherein, each first flow guide strip assembly 4.5 can include a plurality of parallel distributed first flow guide strips, and the plurality of first flow guide strips can be distributed along the length direction of the shell 1, and the bottom of the plurality of first flow guide strips located in the groove bottom of the above-mentioned groove can be connected with the second plate surface (upper plate surface) of the second plate body 4.2, which can divide the part of each section flow channel located in the corresponding groove bottom into a plurality of small flow channels, and to a certain extent, help to improve the heat dissipation effect of the cold plate assembly 4;

[0088] In addition, as shown, Figure 11 The plurality of second flow guide strip assemblies 4.6 are arranged in the protrusion flow channel 4.211 of the plurality of protrusions 4.21 respectively, which can guide the flow of the protrusion flow channel 4.211 of the plurality of protrusions 4.21, and thus facilitate the circulation of the cooling liquid through the protrusion flow channel 4.211 of the plurality of protrusions 4.21; wherein, the number of the second flow guide strip assembly 4.6 can be four, and the four second flow guide strip assemblies 4.6 are arranged at the bottom of the protrusion flow channel 4.211 of the four protrusions 4.21 respectively, and each second flow guide strip assembly 4.6 can include a plurality of parallel distributed second flow guide strips, and the plurality of second flow guide strips can be distributed along the length direction of the shell 1.

[0089] Further, as shown, Figure 9 The cold plate assembly 4 is provided with a through groove 4.7, and the through groove 4.7 is staggered with the concave-convex structure of the cold plate assembly 4; wherein, the through groove 4.7 can be located between the second groove 4.12 and the third groove 4.13;

[0090] The first power plate and the second power plate are electrically connected through the connecting copper bar 5, and the connecting copper bar 5 passes through the through groove 4.7 of the cold plate assembly 4. As shown, Figure 3As shown, that is, the first main power PCB board 6 and the second main power PCB board 7 are electrically connected through the connecting copper bars 5, and the connecting copper bars 5 pass through the through slot 4.7 of the cold plate assembly 4, avoiding the interference between the connecting parts between the first main power PCB board 6 and the second main power PCB board 7 and the cold plate assembly 4, so as to ensure the effective electrical connection of the first main power PCB board 6 and the second main power PCB board 7.

[0091] Further, as shown, Figure 2 The shell 1 includes: a cabinet 1.1, an upper cover 1.2 and a lower cover 1.3.

[0092] As shown, Figure 4 and Figure 5 The upper end and the lower end of the cabinet 1.1 are both open; that is, the cabinet 1.1 has an upper port and a lower port.

[0093] As shown, Figure 3 The cold plate assembly 4 is arranged in the middle part of the cabinet 1.1, the first power plate is located on the lower side of the cold plate assembly 4, and the second power plate, the inductor module 2 and the two transformer modules 3 are respectively located on the upper side of the cold plate assembly 4.

[0094] The upper cover 1.2 is assembled to the upper end of the cabinet 1.1.

[0095] The lower cover 1.3 is assembled to the lower end of the cabinet 1.1.

[0096] That is, the shell 1 adopts the structure of the cabinet matched with the upper and lower covers, which is convenient for disassembling and assembling the above-mentioned devices, modules and cold plate assembly 4 in the shell 1, and the arrangement of the above-mentioned devices, modules and cold plate assembly 4 in the cabinet 1.1 also helps to make the OBC power module compact in structure and reduce the volume.

[0097] In addition, the assembly process of the OBC power module is as follows:

[0098] First, a plurality of ceramic substrates 11 are pasted one by one at a plurality of protrusions 4.21 on the first side of the cold plate assembly 4, then the first main power PCB board 6 is installed and fixed by screws, then the lower cover 1.3 is fastened to the lower port of the cabinet 1.1, then a plurality of ceramic substrates 11 are pasted one by one at corresponding positions on the second side of the cold plate assembly 4, then the inductor module 2 and the two transformer modules 3 are embedded and installed in the three grooves of the cold plate assembly 4 and are fixed by screws, then the second main power PCB board 7 is installed and fixed by screws, and finally the upper cover 1.2 is fastened to the upper port of the cabinet 1.1.

[0099] The utility model discloses an embodiment further provides a kind of charging pile, including OBC power module, the OBC power module is as above-mentioned OBC power module.Due to the OBC power module of above-mentioned in this scheme is used, it also has corresponding beneficial effect therefore, specifically can refer to the foregoing description, not repeated here.

[0100] In addition, the plurality of OBC power modules can be placed in close proximity in the charging pile, and the plurality of OBC power modules do not affect each other when stacked, which can be suitable for high-power charging piles, and the overall design volume of the high-power charging pile is reduced by stacking. In addition, the OBC power module can adopt a drawer structure and can be slid into the cabinet of the charging pile for installation, making the installation of the OBC power module more convenient and fast. Of course, the charging pile can be used as a new energy charging pile, an industrial power supply, a military enterprise power supply, or a medical power supply.

[0101] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0102] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An OBC power module, characterized by, At least comprising: a shell (1) and a first power plate, a second power plate, an inductance module (2), a transformer module (3) and a cold plate assembly (4) arranged in the shell (1); the first power plate is located on the first side of the cold plate assembly (4), the second power plate is located on the second side of the cold plate assembly (4), and the inductance module (2) and the transformer module (3) are located on the first side and / or the second side of the cold plate assembly (4) respectively; wherein the first side and the second side of the cold plate assembly (4) have concave-convex structures respectively, so that they can be in contact with the first power plate, the second power plate, the inductance module (2) and the transformer module (3) respectively.

2. The OBC power module of claim 1, wherein, One side of the first side and the second side of the cold plate assembly (4) is provided with a protrusion (4.21), and the other side is respectively provided with a first groove (4.11) and a second groove (4.12); One of the first power plate and the second power plate is in contact with the protrusion (4.21), and the other is in contact with the first side or the second side of the cold plate assembly (4); The transformer module (3) and the inductance module (2) are embedded in the first groove (4.11) and the second groove (4.12) for installation.

3. The OBC power module of claim 2, wherein, The protrusion (4.21) is located on the first side of the cold plate assembly (4), and the first groove (4.11) and the second groove (4.12) are located on the second side of the cold plate assembly (4) respectively; Wherein the inductance module (2) and the transformer module (3) are electrically connected with the second power plate respectively.

4. The OBC power module of claim 3, wherein, The number of the protrusions (4.21) is multiple, and they are distributed in parallel along the width direction of the shell (1); The first power plate is in contact with the multiple protrusions (4.21) on the first side of the cold plate assembly (4) through multiple first semiconductor devices; The first groove (4.11) and the second groove (4.12) are distributed in parallel along the width direction of the shell (1); The second power plate is in contact with the second side of the cold plate assembly (4) through multiple second semiconductor devices.

5. The OBC power module of claim 4, wherein, The cold plate assembly (4) has a liquid inlet (4.3), a cooling liquid circulation flow channel (4.14) and a liquid outlet (4.4) which are communicated in sequence; wherein the liquid inlet (4.3) and the liquid outlet (4.4) are located on the outer wall of the shell (1), and the cooling liquid circulation flow channel (4.14) is a serpentine flow channel; Each protrusion (4.21) is provided with a protrusion flow channel (4.211) which communicates with the cooling liquid circulation flow channel (4.14).

6. The OBC power module of claim 5, wherein, The cold plate assembly (4) comprises a first plate body (4.1) and a second plate body (4.2); The first plate surface of the first plate body (4.1) is assembled with the second plate surface of the second plate body (4.2); wherein the first plate surface of the first plate body (4.1) is provided with the cooling liquid circulation flow channel (4.14), and the second plate surface is provided with the first groove (4.11) and the second groove (4.12); the first plate surface of the second plate body (4.2) is provided with multiple protrusions (4.21).

7. The OBC power module of claim 6, wherein, The cold plate assembly further comprises a plurality of first flow guide strip assemblies (4.5) and a plurality of second flow guide strip assemblies (4.6); The plurality of first flow guide strip assemblies (4.5) are respectively arranged on the first plate surface of the first plate body (4.1) and are respectively located in the plurality of flow channels of the cooling liquid circulation flow channel (4.14); The plurality of second flow guide strip assemblies (4.6) are respectively arranged in the plurality of protrusion flow channels (4.211) of the plurality of protrusions (4.21).

8. The OBC power module of claim 1, wherein, The cold plate assembly (4) is provided with a through groove (4.7) and is staggered with the concave-convex structure of the cold plate assembly (4); The first power plate and the second power plate are electrically connected through a connecting copper bar (5), and the connecting copper bar (5) passes through the through groove (4.7) of the cold plate assembly (4).

9. The OBC power module of claim 1, wherein, The shell (1) comprises a cabinet (1.1), an upper cover (1.2) and a lower cover (1.3); The upper end and the lower end of the cabinet (1.1) are both open; The cold plate assembly (4) is arranged in the middle part of the cabinet (1.1), the first power plate is located on the lower side of the cold plate assembly (4), and the second power plate, the inductor module (2) and the transformer module (3) are respectively located on the upper side of the cold plate assembly (4); The upper cover (1.2) is assembled on the upper end of the cabinet (1.1); The lower cover (1.3) is assembled on the lower end of the cabinet (1.1).

10. A charging post comprising an OBC power module, characterized in that, The OBC power module is the OBC power module according to any one of claims 1-9.

Images