CN216648655U - DC converter input device - Google Patents

Abstract

The utility model provides a direct current converter input device which is used for connecting a galvanic pile of a fuel cell system and comprises a main body, an internal conductive bus, a direct-connected copper bar and a wiring harness copper bar, wherein a sealing cavity is arranged in the main body, the input end of the internal conductive bus is positioned in the sealing cavity, a first mounting hole group and a second mounting hole group are also arranged on the outer wall of the main body, the direct-connected copper bar and the wiring harness copper bar respectively extend into the sealing cavity through the first mounting hole group and the second mounting hole group and are electrically connected with the internal conductive bus, and one of the direct-connected copper bar and the wiring harness copper bar is used for being electrically connected with the galvanic pile. Arrange directly to link copper bar and pencil copper bar through the integrated design on direct current converter, have concurrently and pass through the function that the pencil is connected and copper bar lug connection with the pile, the user can choose for use different connected modes according to actual conditions, realizes the electrical connection of direct current converter and pile. Meanwhile, only one set of die needs to be designed, so that the research and development cost and the research and development period of the die are greatly saved.

Description

DC converter input device

Technical Field

The utility model relates to the technical field of direct current conversion, in particular to an input device of a direct current converter.

Background

In the process of continuous development of fuel cell systems, the connection structure between the fuel cell system and a high-power direct current converter (DC/DC converter) has various requirements, and the input current is also increased.

For different client applications, the input form of the dc converter is mainly the following two types: firstly, a direct current converter is directly connected with a galvanic pile of a fuel cell system through a copper bar; and secondly, the DC/DC is connected with the electric pile through a wiring harness. The two structural forms have different requirements on the design of the inner part and the outer shell of the direct current converter, and the repeated work of the design and the repeated development of the outer shell mold influence the delivery period and the development cost of the product.

Under the form, a better design is urgently needed, and different requirements of direct connection of the copper bar of the direct current converter and the galvanic pile and connection of the wire harness can be met on the basis of less research and development and less investment of molds.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct current converter input device, which can have the functions of connecting with a galvanic pile through a wiring harness and directly connecting with a copper bar only by designing a set of moulds, and a user can select different connection modes according to actual conditions to realize the electrical connection between the direct current converter and the galvanic pile, thereby greatly saving the research and development cost and the research and development period of the moulds.

In order to achieve the above object, the present invention provides an input device of a dc converter, which is used for connecting a stack of a fuel cell system, and includes a main body, an internal conductive bus bar, a direct-connected copper bar and a wiring harness copper bar, wherein the main body has a sealed cavity therein, an input end of the internal conductive bus bar is located in the sealed cavity, the outer wall of the main body is further provided with a first mounting hole group and a second mounting hole group, the direct-connected copper bar and the wiring harness copper bar respectively extend into the sealed cavity through the first mounting hole group and the second mounting hole group and are electrically connected with the internal conductive bus bar, and one of the direct-connected copper bar and the wiring harness copper bar is used for electrically connecting with the stack.

Optionally, the sealing cavity is located at a corner of the main body, the first mounting hole group is located on a bottom wall of the sealing cavity, and the second mounting hole group is located on a side wall of the sealing cavity.

Optionally, the input end of the direct-connected copper bar is provided with a first threaded hole for being in threaded connection with the output end of the galvanic pile.

Optionally, the dc converter input device is further including being located the mount pad of sealed intracavity, the female input that arranges of inside electrically conductive with mount pad threaded connection, set up the second screw hole that runs through on the mount pad, the output that directly links the copper bar have with second screw hole assorted external screw thread, the output that directly links the copper bar passes behind the first installation punch combination screw in the second screw hole and with the female input contact of arranging of inside electrically conductive.

Optionally, the input end of the direct-connected copper bar is sleeved with an insulator except for the part connected with the galvanic pile, and the insulator is further provided with an annular sealing groove for placing a sealing ring.

Optionally, the input of pencil copper bar with the pile winding displacement is connected, the output of pencil copper bar is provided with the electrically conductive gasket that has the mounting hole, the corresponding third screw hole that is provided with of the input of inside electrically conductive female arranging, direct current converter input device still includes a plurality of bolts, the bolt runs through screw in behind the mounting hole corresponds the third screw hole, with will electrically conductive gasket compresses tightly on the input of inside electrically conductive female arranging.

Optionally, the internal conductive busbar comprises a positive conductive busbar and a negative conductive busbar, the positive conductive busbar and the negative conductive busbar are formed by overlapping a plurality of conductive busbars, and two adjacent conductive busbars are connected through at least two fourth threaded holes in a threaded manner.

Optionally, an explosion-proof valve is further arranged on the outer wall of the main body, and a valve body of the explosion-proof valve is communicated with the sealing cavity.

Optionally, a rubber sealing element is arranged on the cavity wall in the sealing cavity, a telescopic hole is formed in the rubber sealing element, and the input end of the internal conductive busbar penetrates through the telescopic hole and extends into the sealing cavity.

Optionally, the main body includes a housing and a housing cover, the housing cover is fastened to the housing, and a sealing gasket is disposed between the housing cover and the housing.

The utility model provides a direct-current converter input device, which is characterized in that a direct-connection copper bar and a wiring harness copper bar are arranged on a direct-current converter in an integrated design, so that the direct-current converter input device has the functions of being connected with a galvanic pile through wiring harnesses and directly connecting the copper bar, and a user can select different connection modes according to actual conditions to realize the electrical connection of the direct-current converter and the galvanic pile. Meanwhile, only one set of die needs to be designed, so that the research and development cost and the research and development period of the die are greatly saved.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the utility model and do not constitute any limitation to the scope of the utility model. Wherein:

fig. 1 is a partial schematic diagram of an input device of a dc converter according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating installation of a directly connected copper bar according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an installation of a harness copper bar according to an embodiment of the present invention;

fig. 4 is a schematic connection diagram of an internal conductive busbar and a mounting seat according to an embodiment of the present invention;

in the drawings:

1-internal conductive busbar; 2-directly connecting copper bars; 3-wiring harness copper bars; 4-sealing the cavity; 5-a shell; 6-mounting a base; 7-an insulator; 8-an explosion-proof valve; 9-a rubber seal;

10-positive conductive busbar; 11-a negative conductive busbar; 12-a fourth threaded hole; 20-a first threaded hole; 30-a conductive gasket; 31-third threaded hole.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this disclosure, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. As used in this disclosure, the term "plurality" is generally employed in its sense including "at least one" unless the content clearly dictates otherwise. As used in this disclosure, the term "at least two" is generally employed in a sense including "two or more" unless the content clearly dictates otherwise. Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or at least two of the features.

Fig. 1 is a partial schematic diagram of an input device of a dc converter according to an embodiment of the present invention; fig. 2 is a schematic view illustrating installation of a directly connected copper bar according to an embodiment of the present invention; fig. 3 is a schematic view illustrating an installation of a harness copper bar according to an embodiment of the present invention; fig. 4 is a partial schematic view of an internal conductive busbar according to an embodiment of the present invention.

Referring to fig. 1 to 3, the present embodiment provides a dc converter input device for connecting a stack of a fuel cell system, including a main body, an internal conductive busbar 1, a direct-connection copper bar 2, and a wiring harness copper bar 3, where the main body has a sealed cavity 4, an input end of the internal conductive busbar 1 is located in the sealed cavity 4, an outer wall of the main body is further provided with a first mounting hole set and a second mounting hole set, the direct-connection copper bar 2 and the wiring harness copper bar 3 respectively extend into the sealed cavity 4 through the first mounting hole set and the second mounting hole set and are electrically connected to the internal conductive busbar 1, and one of the direct-connection copper bar 2 and the wiring harness copper bar 3 is used for electrically connecting to the stack.

Arrange through the integrated design on the direct current converter and directly link copper bar 2 and pencil copper bar 3, have concurrently and pass through the function that the pencil is connected and copper bar lug connection with the pile, the user can choose different connected modes for use according to actual conditions, realizes the electrical connection of direct current converter and pile. Meanwhile, only one set of die needs to be designed, so that the research and development cost and the research and development period of the die are greatly saved.

Specifically, in this embodiment, the main body includes a housing 5 and a housing cover, the housing cover is fastened to the housing 5, and a sealing gasket is disposed between the housing cover and the housing 5. The housing 5 is used for accommodating working components of the dc converter, and the housing cover is used for sealing the housing 5 to prevent the working components in the housing 5 from being exposed to the environment. The sealing gasket is arranged to increase the sealing performance between the shell cover and the shell 5, so that the inside of the whole direct current converter has better sealing performance, and hydrogen escaping from the fuel cell system is prevented from entering the sealing cavity 4.

With continued reference to fig. 1-3, the sealed cavity 4 is located at a corner of the main body, the first mounting hole set is located on a bottom wall of the sealed cavity 4, and the second mounting hole set is located on a side wall of the sealed cavity 4. Through inciting somebody to action sealed chamber 4 sets up so that set up in the corner department of main part first installation punch combination reaches second installation punch combination, and then be convenient for set up pencil copper bar 3 directly links copper bar 2, and first installation punch combination reaches second installation punch combination is located on the different chamber walls in sealed chamber 4 to carry out electrical connection with the pile. It should be understood that the present application does not limit the position of the first set of mounting holes and the second set of mounting holes on the sealed cavity 4, for example, the first set of mounting holes is located on one side wall of the sealed cavity 4, and the second set of mounting holes is located on the other adjacent side wall of the sealed cavity 4.

In addition, in this embodiment, the number of the wire harnesses or the copper bars included in the directly-connected copper bar 2 and the wire harness copper bar 3 is not limited, and therefore, the number of the mounting holes included in the first mounting hole group and the second mounting hole group is not limited at all. For example, directly link copper bar 2 and include two hard copper bars, hard copper bar is anodal hard copper bar and negative pole hard copper bar respectively, is used for connecting respectively the anodal input and the negative pole input of pile, this moment first mounting hole group should contain two mounting holes, is used for installing respectively anodal hard copper bar with negative pole hard copper bar. The wiring harness copper bar 3 comprises four wiring harnesses which are respectively two positive wiring harnesses and two negative wiring harnesses and are used for being connected with the positive input end and the negative input end of the electric pile respectively, and at the moment, the first mounting hole group comprises four mounting holes and is used for mounting the two positive wiring harnesses and the two negative wiring harnesses respectively.

In this embodiment, the hard copper bar that directly links copper bar 2 is semi-cylindrical, the input of hard copper bar set up be used for with the first screw hole 20 of the output threaded connection of pile, corresponding to it, the output of pile also can contain two semi-cylindrical hard copper bars, also corresponds to having seted up on it first screw hole 20.

Further, please refer to fig. 4, the dc converter input device further includes a mounting seat 6 located in the sealed cavity 4, an input end of the internal conductive busbar 1 is in threaded connection with the mounting seat 6, a second threaded hole penetrating through the mounting seat 6 is formed in the mounting seat 6, an output end of the direct-connected copper bar 2 has an external thread matched with the second threaded hole, and an output end of the direct-connected copper bar 2 passes through the first mounting hole group and then is screwed into the second threaded hole and contacts with the input end of the internal conductive busbar 1. The mounting seat 6 is used for fixedly mounting the end part of the internal conductive busbar 1 and is also used for fixing the direct-connected copper bar 2, and the mounting seat 6 can be fixed in the sealed cavity 4 in a threaded connection mode.

Furthermore, an insulator 7 is sleeved outside the input end of the direct-connected copper bar 2 except the part connected with the galvanic pile, and an annular sealing groove used for placing a sealing ring is further formed in the insulator 7. When directly link copper bar 2 with during pile electrical connection, insulator 7 inserts in the slot of pile to seal through the sealing washer, in order to guarantee directly link copper bar 2 with the connection steadiness and the leakproofness of pile.

In this embodiment, the input of pencil copper bar 3 with the pile winding displacement is connected, the output of pencil copper bar 3 is provided with the electrically conductive gasket 30 that has the mounting hole, the corresponding third screw hole 31 that is provided with of the input of inside electrically conductive female arranging 1, dc converter input device still includes a plurality of bolts, the bolt runs through behind the mounting hole screw in corresponds third screw hole 31, with electrically conductive gasket 30 compresses tightly on the input of inside electrically conductive female arranging 1. The input end of the wiring harness copper bar 3 can be electrically connected with the galvanic pile in a mode of being inserted into the output interface of the galvanic pile.

Referring to fig. 1 in combination with fig. 4, in this embodiment, the internal conductive busbar 1 includes a positive conductive busbar 10 and a negative conductive busbar 11, the positive conductive busbar 10 and the negative conductive busbar 11 are formed by overlapping a plurality of conductive busbars, and two adjacent conductive busbars are connected by threads of at least two fourth threaded holes 12. The internal conductive busbar 1 is used for inputting electricity into the internal input conductive structure of the direct current converter, and the two adjacent conductive busbars are connected through the 12 threads of the at least two fourth threaded holes, so that the mode of threaded connection of one traditional threaded hole is more reliable, and the safety is higher.

In this embodiment, the positive conductive busbar 10 and the negative conductive busbar 11 are both irregular and cannot be directly processed, and therefore need to be formed by overlapping a plurality of conductive busbars, which can be formed by bending sheet metal parts.

With reference to fig. 1, an explosion-proof valve 8 is further disposed on an outer wall of the main body, and a valve body of the explosion-proof valve 8 is communicated with the seal cavity 4. When directly connecting copper bar 2 with during the pile circular telegram, because the expend with heat and contract with cold of direct current copper bar for the hydrogen that the fuel cell system revealed is easily followed directly connect copper bar 2 with get into in the clearance between the mounting hole of first mounting hole group sealed chamber 4 makes when hydrogen gets into too much the pressure in sealed chamber 4 sharply increases, and then triggers explosion-proof valve 8, and passes through explosion-proof valve 8 outwards exhausts to prevent to cause the incident because of hydrogen. Therefore, by installing the explosion-proof valve 8 on the outer wall of the main body, it is ensured that even in the case of leakage of hydrogen gas, the hydrogen gas does not enter the inside of the sealed chamber 4, ensuring safety with hydrogen gas.

The sealing structure is characterized in that a rubber sealing element 9 is arranged on the cavity wall in the sealing cavity 4, a telescopic hole is formed in the rubber sealing element 9, and the input end of the internal conductive busbar 1 penetrates through the telescopic hole and extends into the sealing cavity 4. Because the output end of the internal conductive busbar 1 needs to stretch out the sealed cavity 4 to be connected with the internal input conductive structure of the direct current converter, the rubber sealing element 9 has certain flexibility and elasticity, and when the internal conductive busbar 1 passes through the telescopic hole, the telescopic hole can expand automatically, so that the sealing performance of the sealed cavity 4 is ensured.

In summary, the embodiment of the present invention provides an input device for a dc converter, in which a direct-connected copper bar and a wiring harness copper bar are integrally designed and arranged on the dc converter, so that the input device has both the function of connecting with a galvanic pile through a wiring harness and the function of directly connecting with the copper bar, and a user can select different connection modes according to actual situations to realize electrical connection between the dc converter and the galvanic pile. Meanwhile, only one set of die needs to be designed, so that the research and development cost and the research and development period of the die are greatly saved. In addition, through install explosion-proof valve on the outer wall of main part, guaranteed even under the condition that there is the hydrogen to reveal, also do not get into the inside of sealed chamber, guaranteed with hydrogen safety.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The utility model provides a direct current converter input device for connect fuel cell system's pile, its characterized in that, include main part, inside electrically conductive female arranging, directly link copper bar and pencil copper bar, a sealed chamber has in the main part, inside electrically conductive female input of arranging is located sealed intracavity, still set up first installation punch combination and second installation punch combination on the outer wall of main part, directly link the copper bar and the pencil copper bar passes through respectively first installation punch combination reaches second installation punch combination stretches into sealed chamber and with inside electrically conductive female electrical connection of arranging, just directly link the copper bar with one of them person of pencil copper bar be used for with pile electrical connection.

2. The input device of claim 1, wherein the sealed cavity is located at a corner of the body, the first set of mounting holes are located on a bottom wall of the sealed cavity, and the second set of mounting holes are located on a side wall of the sealed cavity.

3. The input device of the direct-current converter according to claim 1, wherein the input end of the direct-connected copper bar is provided with a first threaded hole for being in threaded connection with the output end of the galvanic pile.

4. The input device of claim 3, further comprising a mounting seat located in the sealing cavity, wherein an input end of the internal conductive busbar is in threaded connection with the mounting seat, the mounting seat is provided with a second threaded hole therethrough, an output end of the direct-connected copper bar has an external thread matched with the second threaded hole, and an output end of the direct-connected copper bar passes through the first mounting hole set and then is screwed into the second threaded hole and contacts with the input end of the internal conductive busbar.

5. The input device of claim 4, wherein an insulator is sleeved outside the input end of the direct-connected copper bar except for a portion connected with the galvanic pile, and an annular sealing groove for placing a sealing ring is further formed in the insulator.

6. The input device of claim 1, wherein the input end of the wire harness copper bar is connected to the electric pile flat cable, the output end of the wire harness copper bar is provided with a conductive gasket having a mounting hole, the input end of the internal conductive bus bar is correspondingly provided with a third threaded hole, the input device further comprises a plurality of bolts, and the bolts penetrate through the mounting hole and are screwed into the corresponding third threaded holes to press the conductive gasket against the input end of the internal conductive bus bar.

7. The input device of claim 1, wherein the internal conductive bus bar comprises a positive conductive bus bar and a negative conductive bus bar, the positive conductive bus bar and the negative conductive bus bar are formed by overlapping a plurality of conductive bus bars, and two adjacent conductive bus bars are connected by at least two fourth threaded holes in a threaded manner.

8. The input device of the DC converter as recited in claim 1, wherein an explosion-proof valve is further disposed on the outer wall of the main body, and a valve body of the explosion-proof valve is communicated with the sealed cavity.

9. The input device of claim 1, wherein a rubber sealing element is disposed on a cavity wall in the sealing cavity, a telescopic hole is disposed on the rubber sealing element, and an input end of the internal conductive busbar passes through the telescopic hole and extends into the sealing cavity.

10. The input device as claimed in claim 1, wherein the main body comprises a housing and a cover, the cover is fastened to the housing, and a gasket is disposed between the cover and the housing.

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