CN210518087U - DC converter and energy recovery acceleration auxiliary system - Google Patents
DC converter and energy recovery acceleration auxiliary system Download PDFInfo
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- CN210518087U CN210518087U CN201921307993.1U CN201921307993U CN210518087U CN 210518087 U CN210518087 U CN 210518087U CN 201921307993 U CN201921307993 U CN 201921307993U CN 210518087 U CN210518087 U CN 210518087U
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Abstract
The utility model discloses a DC converter and an energy recovery accelerating auxiliary system, wherein the DC converter comprises a top cover, a printed circuit board and a cooling plate, the top cover and the cooling plate form a closed cavity to encapsulate the printed circuit board therein; an inductance magnetic core is arranged on the printed circuit board; the top cap is equipped with the elastic component on the surface relative with the inductance core, the elastic component contacts with inductance core interference in order to fix the inductance core. The utility model has the advantages of practice thrift the assemble duration, save printed circuit board's space, be favorable to reducing manufacturing cost and improvement production efficiency are saved to direct current converter's overall dimension.
Description
Technical Field
The utility model belongs to the technical field of the automotive electrical apparatus technique and specifically relates to a DC converter and energy recuperation auxiliary system with higher speed are related to.
Background
Generally, an electrical device that converts a dc voltage in a range or a fixed value into another dc voltage in a variable or fixed value is generally referred to as a dc converter or an electrical apparatus that converts a fixed dc voltage into a variable dc voltage. The structure of the direct current converter is designed in combination with the energy conservation and emission reduction requirement of modern automobiles along with the difference of application fields, for example, the direct current converter is applied to the automobile field, and the vehicle-mounted engine needs a power battery to provide auxiliary power, so that the requirement on the battery is extremely high, and the improvement is needed in order to ensure that the internal structure of a product is reasonable in arrangement.
Research finds that a direct current converter of an energy recovery acceleration auxiliary system applied to an automobile in the prior art has the problems of low internal space utilization rate due to complex structural design, easy damage to sealing performance under the condition of high-pressure water spraying, and poor electromagnetic compatibility (EMC) performance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dc converter and energy recuperation auxiliary system with higher speed to it is complicated to solve above-mentioned dc converter and have structural design, leads to its internal space utilization not high, and under the condition of process high pressure water spray, can be easily destroyed its sealing performance, and the poor problem of its electromagnetic compatibility.
In order to solve the problem, the utility model discloses a following technical scheme realizes:
a dc converter, comprising: the cooling device comprises a top cover, a printed circuit board and a cooling plate, wherein the top cover and the cooling plate form a closed cavity so as to enclose the printed circuit board; an inductance magnetic core is arranged on the printed circuit board; the top cap with be equipped with the elastic component on the relative surface of inductance magnetic core, the elastic component with inductance magnetic core interference contact is in order to fix inductance magnetic core.
Preferably, the top cover further comprises: a pressure balancing element for balancing the pressure inside and outside the closed chamber.
Preferably, the cooling plate further comprises a sealant for sealing a gap between an edge of the top cover and the cooling plate.
Preferably, the edge of the top cover is provided with a flange, and the flange extends towards the cooling plate, so that the cooling plate is located inside the flange.
Preferably, the flange is a vertical flange.
Preferably, the elastic member is one or any combination of foam, elastic sheet and rubber.
Preferably, the foam is silica gel foam.
Further, the dc converter further includes a connector, and the connector is connected to the printed circuit board and fixed to the cooling plate.
Furthermore, the connector is integrated with a 48V interface, a 12V interface and a communication interface.
On the other hand, the utility model provides an energy recuperation auxiliary system with higher speed is applied to the car, include: a dc converter as described above.
Compared with the prior art, the utility model has the following advantage:
the utility model provides a direct current converter, include: the cooling device comprises a top cover, a printed circuit board and a cooling plate, wherein the top cover and the cooling plate form a closed cavity so as to enclose the printed circuit board; an inductance magnetic core is arranged on the printed circuit board; the top cap with be equipped with the elastic component on the relative surface of inductance magnetic core, the elastic component with inductance magnetic core interference contact is in order to fix inductance magnetic core. Through setting up the elastic component and locate it the top cap with between the inductance magnetic core, will the top cap is fixed in when on the cooling plate, the top cap to the pressure is applyed to the elastic component, the elastic component with inductance magnetic core interference contact, and then will the inductance magnetic core is fixed, because fixed the inductance magnetic core has only adopted the elastic component, and it has simplified fixedly the step of inductance magnetic core has simplified the assembly flow on producing the line promptly, has practiced thrift assemble duration, has saved simultaneously printed circuit board's space is favorable to reducing DC converter's overall dimension saves manufacturing cost, improves production efficiency.
Further, the utility model provides a direct current converter still including be used for with the edge of top cap with sealed glue is carried out in gap between the cooling plate. The edge of the top cover is provided with the flanging, the flanging extends towards the cooling plate, and the coating part is close to the cooling plate of the top cover or coats the whole cooling plate, so that the cooling plate is positioned in the flanging. Due to the existence of the flanging, the sealant is protected from direct impact of high-pressure water spraying on one hand, the high-pressure water spraying protection function of the direct current converter is improved, and the sealing performance of the direct current converter is indirectly enhanced; on the other hand, due to the existence of the flanging structure, the conduction path of electromagnetic interference is prolonged, and the purpose of improving the electromagnetic compatibility and the electromagnetic anti-interference capability of the direct current converter is further achieved. In order to protect the sealing glue from being damaged, a pressure balance element for balancing the pressure inside the closed cavity and the pressure outside the closed cavity is further arranged on the top cover, and the pressure balance element can achieve the functions of air permeability and water impermeability, so that the balance between the pressure inside the cavity of the direct current converter and the atmospheric pressure outside the cavity is kept, and the sealing performance of the direct current converter is improved.
Drawings
Fig. 1 is an exploded view of the overall structure of a dc converter in the prior art;
FIG. 2 is a top view of the DC converter shown in FIG. 1 with the upper cover removed;
FIG. 3 is a schematic cross-sectional view of a DC converter in the prior art;
FIG. 4 is a schematic diagram of an electromagnetic propagation path of a prior art DC converter;
fig. 5 is a schematic bottom view of an upper cover of a dc converter according to an embodiment of the present invention;
fig. 6 is a schematic top view of an upper cover of a dc converter according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a dc converter according to an embodiment of the present invention;
fig. 8 is a schematic diagram of an electromagnetic propagation path of a dc converter according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a main circuit structure of an energy recovery acceleration assisting system according to an embodiment of the present invention.
Detailed Description
As described in the background art, the dc converter of the energy recovery acceleration auxiliary system applied to the vehicle in the prior art has a complicated structural design, which results in a low utilization rate of its internal space, and can easily damage its sealing performance under the condition of high-pressure water spraying, and has a poor electromagnetic compatibility (i.e., poor electromagnetic interference resistance). It is found that, with reference to fig. 1 to 4, the dc converter 10 in the prior art includes: the PCB comprises a top cover 11, a Printed Circuit Board (PCB) 20 and a cooling plate 30, wherein the top cover 11 and the cooling plate 30 form a closed cavity for packaging the PCB 20; an inductance core 21 is arranged on the printed circuit board 20; and a 48V interface 23, a 12V interface 24 and a communication interface 25 connected to the printed circuit board 20. In order to fix the inductor core 21 to the printed circuit board 20, a pressing plate 22 and the inductor core 21 are fixed to the cooling plate 30 by screws penetrating the printed circuit board 20, however, the fixing method occupies a space of the printed circuit board 20, i.e. the press plate 22 occupies the surface area of the printed circuit board 20 that is in contact with the printed circuit board 20, and since the top cover 11 needs to be in contact with the pressure plate 22, the pressure plate 22 occupies a part of the space in the height direction, and therefore, the defect further results in that the utilization rate of the inner space of the chamber is not high, that is, the reduction of the overall size of the product (dc converter) is not facilitated, the design of the pressing plate 22 is complicated, the number of screws used for fixing the inductor core 21 is large, the production tact of the production line is affected, and the production efficiency is reduced.
With continued reference to fig. 3, as shown in fig. 3, a gap exists between the edge of the top cover 11 and the cooling plate 30, and the sealant 40 may be used to fill the gap to seal the product. At this time, as shown in fig. 3, a part of the sealant 40 is exposed outside, when the dc converter is applied to an engine compartment of an automobile and the whole automobile is cleaned, a high-pressure water gun used for cleaning the whole automobile sprays water to the dc converter, and the sealant 40 fails under the action of the sprayed water, thereby affecting the sealing performance of the product.
With reference to fig. 4, as shown in fig. 4, when the dc converter 10 operates, since the sealant 40 is not conductive, electromagnetic interference generated inside the dc converter 10 or electromagnetic interference passing through the sealant 40 affects normal operation of the dc converter 10, so that the dc converter 10 has poor electromagnetic compatibility, that is, poor electromagnetic interference resistance. In addition, since the dc converter 10 generates heat during operation, the gas inside the chamber expands due to heating, so that the atmospheric pressure inside the chamber and the atmospheric pressure outside the chamber lose balance, and finally the sealant 40 is damaged, thereby also damaging the sealing performance of the chamber.
Based on the above research, the present embodiment provides a dc converter, including: the cooling structure comprises a top cover, a printed circuit board and a cooling plate, wherein the top cover and the cooling plate form a closed cavity for packaging the printed circuit board; an inductance magnetic core is arranged on the printed circuit board; the top cap with be equipped with the elastic component on the relative surface of inductance magnetic core, the elastic component with inductance magnetic core interference contact is in order to fix inductance magnetic core. Through setting up the elastic component and locate it the top cap with between the inductance magnetic core, will the top cap is fixed in when on the cooling plate, the top cap to the pressure is applyed to the elastic component, the elastic component with inductance magnetic core interference contact, and then the realization will the inductance magnetic core is fixed, because fixed the inductance magnetic core has only adopted the elastic component, and it has simplified fixedly the step of inductance magnetic core has simplified the assembly flow on producing the line promptly, practices thrift assemble duration, has saved simultaneously printed circuit board's space is favorable to reducing DC converter's overall dimension saves manufacturing cost, improves production efficiency.
Further, the dc converter provided in this embodiment further includes a sealant for sealing a gap between an edge of the top cover and the cooling plate. The edge of the top cover is provided with the flanging, the flanging extends towards the cooling plate, and the coating part is close to the cooling plate of the top cover or coats the whole cooling plate, so that the cooling plate is positioned in the flanging. Due to the existence of the flanging, the sealant is protected from direct impact of high-pressure water spraying on one hand, the high-pressure water spraying protection function of the direct current converter is improved, and the sealing performance of the direct current converter is indirectly enhanced; on the other hand, due to the existence of the flanging structure, the conduction path of electromagnetic interference is prolonged, and the purpose of improving the electromagnetic compatibility and the electromagnetic anti-interference capability of the direct current converter is further achieved. In order to protect the sealing glue from being damaged, a pressure balance element for balancing the pressure inside the closed cavity and the pressure outside the closed cavity is further arranged on the top cover, and the pressure balance element can achieve the functions of air permeability and water impermeability, so that the balance between the pressure inside the cavity of the direct current converter and the atmospheric pressure outside the cavity is kept, and the sealing performance of the direct current converter is improved.
The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. Advantages and features of the present invention will become apparent from the following description and claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
It should be noted that the drawings are in a very simplified form and employ non-precise ratios for the purpose of facilitating and distinctly facilitating the description of one embodiment of the invention.
As shown in fig. 5 to 8, the present embodiment provides a dc converter 100, including: the PCB cooling structure comprises a top cover 110, a Printed Circuit Board (PCB) 200 and a cooling plate 300, wherein the top cover 110 and the cooling plate 300 form a closed cavity for packaging the PCB 200; be provided with the inductance core on printed circuit board 200, in this embodiment, the inductance core is disconnect-type magnetic element, and it includes I magnetic core 211 and E magnetic core 210, be equipped with the magnetic core groove on the cooling plate 300, I magnetic core 211 is located inside the magnetic core groove, corresponding to I magnetic core 211 position, the last E magnetic core mounting hole of having seted up of printed circuit board 200, E magnetic core 210 runs through E magnetic core mounting hole with I magnetic core 211 contacts, through E magnetic core mounting hole can realize right E magnetic core 210 carries out spacing on the horizontal direction.
The top cover 110 corresponding to the position of the inductor core is provided with an elastic member 1101 for fixing the inductor core on the surface thereof opposite to the inductor core. Through setting up elastic component 1101 and locate it between top cap 110 and the inductance core, will top cap 110 be fixed in when on cooling plate 300, top cap 110 to elastic component 1101 applies pressure, elastic component 1101 with inductance core interference contact, elastic component 1101 atress produces compression deformation, to the inductance core, specifically, it is right E magnetic core 210 produces decurrent pressure, and then the realization will the inductance core is fixed. In this embodiment, the top cover 110 can be fixed to the cooling plate 300 by screwing. Because the inductance magnetic core is fixed only by the elastic piece, the step of fixing the inductance magnetic core is simplified, namely the assembly flow on a production line is simplified, the assembly time is saved, meanwhile, the space of the printed circuit board is saved, the reduction of the whole size of the direct current converter is facilitated, the manufacturing cost is saved, and the production efficiency is improved.
In other embodiments, the elastic member 1101 includes, but is not limited to, one or any combination of foam, spring, and rubber.
Work as when elastic component 1101 is the bubble cotton, the bubble cotton can be the silica gel bubble cotton, and is when adopting the silica gel bubble is cotton fixed during the inductance magnetic core, can cut apart into a plurality of fritters with the silica gel bubble cotton for the silica gel bubble cotton of a plurality of fritters contacts with same inductance magnetic core respectively, can avoid so pressing the unsettled region of inductance magnetic core, and then solves the unsettled region of inductance magnetic core receives pressure and cracked problem.
The dc converter 100 of the present embodiment further includes a sealant 400 for sealing a gap between an edge of the top cover 110 and the cooling plate 300. By providing the flange 1102 at the edge of the top cover 110 and extending the flange 1102 toward the cooling plate 300, a portion of the cooling plate 300 close to the top cover 110 is covered, or the entire cooling plate 300 is covered, so that the cooling plate 300 is located inside the flange 1102. Due to the existence of the turned-over edge 1102, the sealant 400 is protected from direct impact of high-pressure water spraying on one hand, the high-pressure water spraying protection function of the direct current converter 100 is improved, and the sealing performance of the direct current converter 100 is indirectly enhanced; on the other hand, as shown in fig. 8, due to the existence of the structure of the flange 1102, the conductive path of electromagnetic interference is extended, so that the purpose of improving the electromagnetic compatibility and the electromagnetic interference resistance of the dc converter 100 is achieved.
In order to protect the sealant 400 from being damaged, a pressure balancing element 1103 for balancing pressures inside and outside the closed chamber is further disposed on the top cover 110, and the pressure balancing element 1103 can achieve functions of air permeation and water tightness, so as to keep the pressure inside the cavity of the dc converter 100 balanced with the atmospheric pressure outside the cavity, thereby improving the sealing performance of the dc converter 100.
Further, the dc converter 100 further includes a connector, which is connected to the printed circuit board 200 and fixed to the cooling plate 300. The connector is integrated with a 48V interface (not shown), a 12V interface (not shown) and a communication interface (not shown), that is, in this embodiment, the dc converter 100 is a 48V dc converter for an automobile.
The main functions of the top cover 110 in the above embodiments are to protect the dc converter 100 from external loads, the inductor core and the pcb 200 are combined to realize voltage energy conversion between 48V and 12V, the cooling plate 300 plays a role of heat dissipation, and the 48V interface, the 12V interface and the communication interface integrated with the connector are respectively used for realizing connection with a 48V electrical network and a 12V electrical network and CAN communication.
Based on the above-mentioned embodiment, the utility model provides an energy recuperation auxiliary system with higher speed, it is applied to the car, as shown in fig. 9, energy recuperation auxiliary system with higher speed (BRS) includes: dc converters 100, 48V electrical networks and 12V electrical networks as described in the previous embodiments; the 48V interface of the dc converter 100 is connected to the 48V electrical network, the 12V interface of the dc converter 100 is connected to the 12V electrical network, and the communication interface of the dc converter 100 is used for CAN communication 2400.
Wherein the primary components in the 48V electrical network include a 48V electric machine (BRM)2100 and a 48V battery 2200; the 12V electrical network is a conventional low voltage network, and its main components include a 12V battery 2210, a starter 2110 and other electric loads 2300. In a forward transmission mode, voltage energy is transmitted from the 48V electrical network to the 12V electrical network, powering the 12V electrical network. In the reverse transmission mode, voltage energy is transmitted from the 12V electric network to the 48V electric network, specifically, when the vehicle is in a power-on stage, the voltage energy is pre-charged for a 48V side capacitor; when the vehicle is in the operating phase, it is supplying the 48V electrical network.
To sum up, the utility model provides a direct current converter, include: the cooling device comprises a top cover, a printed circuit board and a cooling plate, wherein the top cover and the cooling plate form a closed cavity for packaging the printed circuit board; an inductance magnetic core is arranged on the printed circuit board; and the surface of the top cover opposite to the inductance magnetic core is provided with an elastic part for fixing the inductance magnetic core. Through setting up the elastic component and with it locate the top cap with between the inductance magnetic core, will the top cap is fixed in when on the cooling plate, the top cap to the elastic component applys pressure, the elastic component with inductance magnetic core interference contact, and then the realization will the inductance magnetic core is fixed. Because the inductance magnetic core is fixed only by the elastic piece, the step of fixing the inductance magnetic core is simplified, namely the assembly flow on a production line is simplified, the assembly time is saved, meanwhile, the space of the printed circuit board is saved, the reduction of the whole size of the direct current converter is facilitated, the manufacturing cost is saved, and the production efficiency is improved. Further, the utility model provides a direct current converter still including be used for with the edge of top cap with sealed glue is carried out in gap between the cooling plate. The edge of the top cover is provided with the flanging, the flanging extends towards the cooling plate, and the coating part is close to the cooling plate of the top cover or coats the whole cooling plate, so that the cooling plate is positioned in the flanging. Due to the existence of the flanging, the sealant is protected from direct impact of high-pressure water spraying on one hand, the high-pressure water spraying protection function of the direct current converter is improved, and the sealing performance of the direct current converter is indirectly enhanced; on the other hand, due to the existence of the flanging structure, the conduction path of electromagnetic interference is prolonged, and the purpose of improving the electromagnetic compatibility and the electromagnetic anti-interference capability of the direct current converter is further achieved. In order to protect the sealing glue from being damaged, a pressure balance element for balancing the pressure inside the closed cavity and the pressure outside the closed cavity is further arranged on the top cover, and the pressure balance element can achieve the functions of air permeability and water impermeability, so that the balance between the pressure inside the cavity of the direct current converter and the atmospheric pressure outside the cavity is kept, and the sealing performance of the direct current converter is improved.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (10)
1. A dc converter, comprising: the cooling device comprises a top cover, a printed circuit board and a cooling plate, wherein the top cover and the cooling plate form a closed cavity so as to enclose the printed circuit board;
an inductance magnetic core is arranged on the printed circuit board; the top cap with be equipped with the elastic component on the relative surface of inductance magnetic core, the elastic component with inductance magnetic core interference contact is in order to fix inductance magnetic core.
2. The dc converter of claim 1, wherein the top cover further comprises: a pressure balancing element for balancing the pressure inside and outside the closed chamber.
3. The dc converter of claim 1, further comprising a sealant for sealing a gap between an edge of the top cover and the cooling plate.
4. The direct current converter according to any one of claims 1 to 3, wherein a flange is provided at an edge of the top cover, and the flange extends toward the cooling plate so that the cooling plate is located inside the flange.
5. The DC converter according to claim 4, wherein the flange is a vertical flange.
6. The DC converter according to claim 5, wherein the elastic member is one or any combination of foam, spring, and rubber.
7. The dc converter according to claim 6, wherein the foam is a silicone foam.
8. The dc converter of claim 7, further comprising a connector, said connector being connected to said printed circuit board and secured to said cooling plate.
9. The dc converter according to claim 8, wherein the connector is integrated with a 48V interface, a 12V interface and a communication interface.
10. An energy recovery acceleration assist system for use in an automobile, comprising: a dc converter as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921307993.1U CN210518087U (en) | 2019-08-13 | 2019-08-13 | DC converter and energy recovery acceleration auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921307993.1U CN210518087U (en) | 2019-08-13 | 2019-08-13 | DC converter and energy recovery acceleration auxiliary system |
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| Publication Number | Publication Date |
|---|---|
| CN210518087U true CN210518087U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921307993.1U Active CN210518087U (en) | 2019-08-13 | 2019-08-13 | DC converter and energy recovery acceleration auxiliary system |
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| CN (1) | CN210518087U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112423568A (en) * | 2020-12-04 | 2021-02-26 | 上海法雷奥汽车电器系统有限公司 | Cooling device of power converter and power converter |
-
2019
- 2019-08-13 CN CN201921307993.1U patent/CN210518087U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112423568A (en) * | 2020-12-04 | 2021-02-26 | 上海法雷奥汽车电器系统有限公司 | Cooling device of power converter and power converter |
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