Busbar assembly, current converter and fuel cell system

Abstract

The application discloses a busbar assembly, a current converter and a fuel cell system, and the busbar assembly comprises a sealing part and an electric connecting wire, the electric connecting wire has a first connecting end and a second connecting end, the electric connecting wire is arranged through the sealing part so that the first connecting end and the second connecting end are respectively located on two sides of the sealing part, wherein the sealing part has a sealing contact surface surrounding an outer surface of the electric connecting wire, and the sealing part is integrally injection molded with the electric connecting wire. According to the busbar assembly for the current converter, the busbar assembly is simple to assemble and convenient to operate, does not need to be assembled by external equipment, can meet the sealing requirement between the sealing part and the electric connecting wire, and the sealing effect of the busbar assembly is improved.

Description

Technical Field

[0001] This invention relates to the field of fuel cell systems, and in particular to a busbar assembly, a current converter, and a fuel cell system. Background Technology

[0002] In related technologies, the traditional solution for sealing busbar components is to use a large interference fit between the busbar component and the rubber gasket to ensure the sealing requirements. However, manual assembly is no longer possible, and external equipment is required for assisted assembly, which leads to increased labor costs for operators and increased system assembly time. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a busbar assembly for a current converter, which is simple to assemble, easy to operate, requires no external equipment for assembly, and can also meet the sealing requirements between the sealing part and the electrical connection line, thereby improving the sealing effect of the busbar assembly.

[0004] The present invention also proposes a current converter having the above-described busbar assembly.

[0005] The present invention also proposes a fuel cell system having the above-described current converter.

[0006] According to the present invention, a busbar assembly for a current converter includes: a sealing portion; an electrical connection wire having a first connection end and a second connection end, the electrical connection wire passing through the sealing portion such that the first connection end and the second connection end are respectively located on both sides of the sealing portion; wherein the sealing portion has a sealing contact surface surrounding the outer surface of the electrical connection wire, the sealing contact surface being integrally injection molded with respect to the outer surface corresponding to the electrical connection wire.

[0007] According to the present invention, a busbar assembly for a current converter includes a sealing part and an electrical connection wire, the electrical connection wire passing through the sealing part, and the electrical connection wire and the sealing part being integrally injection molded. Therefore, the busbar assembly is simple to assemble and easy to operate, requiring no external equipment for assembly, and can also meet the sealing requirements between the sealing part and the electrical connection wire, thereby improving the sealing effect of the busbar assembly.

[0008] According to one embodiment of the present invention, the busbar assembly further includes: a mounting plate, the mounting plate being provided with a sealing portion receiving hole adapted to accommodate the sealing portion, the sealing portion being disposed within the sealing portion receiving hole and integrally injection molded with the mounting plate.

[0009] According to one embodiment of the present application, the busbar assembly further comprises a housing configured as an outer shell of the current converter and having a mounting plate mounting area opposite to the mounting plate and a sealing part mounting area opposite to the sealing part, the sealing part mounting area being provided with a through hole suitable for the electric connection wire harness to pass through, and the sealing part is integrally injection molded with the mounting plate and the housing respectively.

[0010] According to one embodiment of the present application, a plurality of fastener mounting holes corresponding one-to-one are respectively provided on the mounting plate and the mounting plate mounting area, and the mounting plate is fixed to the mounting plate mounting area by fasteners.

[0011] According to one embodiment of the present application, a sealing adhesive layer is provided between the mounting plate mounting area of the housing and the mounting plate.

[0012] According to one embodiment of the present application, the busbar assembly further comprises a stack connection terminal suitable for cooperating with the first connection end inside the sealing part; wherein the stack connection terminal is provided with a cooperating groove on one of the first connection ends, and the stack connection terminal is provided with a cooperating protrusion on the other of the first connection ends, the cooperating groove is suitable for accommodating the cooperating protrusion, and the inner circumferential wall of the cooperating groove is in contact with the outer surface of the cooperating protrusion.

[0013] According to one embodiment of the present application, the inner circumferential wall of the cooperating groove is provided with cooperating terminals protruding towards each other on the surfaces opposite to each other, and the outer surface of the cooperating protrusion is provided with a cooperating hole opposite to the cooperating terminals.

[0014] According to one embodiment of the present application, the electric connection wire harness and the stack connection terminal are configured as one-to-one.

[0015] The current converter according to the present application is briefly described below.

[0016] The current converter according to the present application is provided with the busbar assembly of the above-mentioned embodiments, and since the current converter according to the present application is provided with the busbar assembly of the above-mentioned embodiments, the current converter is simple to assemble, easy to operate, does not need to be assisted by external equipment for assembly, and can improve the sealing effect of the current converter and ensure the safety performance of the current converter.

[0017] The fuel cell system according to the present application is briefly described below.

[0018] The fuel cell system according to the present application is provided with the current converter of the above-mentioned embodiment, and since the fuel cell system according to the present application is provided with the current converter of the above-mentioned embodiment, the fuel cell system is simple to assemble, easy to operate, does not need to be assisted by external equipment for assembly, and can improve the sealing effect of the fuel cell system and ensure the safety performance of the fuel cell system.

[0019] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the following and / or by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0021] Fig. 1 is a structural schematic view of a busbar assembly according to an embodiment of the present application;

[0022] Fig. 2 is a schematic view of the cooperation between the second connecting end and the terminal seat according to an embodiment of the present application;

[0023] Fig. 3 is a schematic view of the cooperation between the first connecting end and the stack connecting terminal according to an embodiment of the present application.

[0024] REFERENCE NUMERALS:

[0025] Busbar assembly 10, sealing part 11, electric connecting wire 12,

[0026] First connecting end 121, cooperation groove 1211, cooperation terminal 1212,

[0027] Second connecting end 122, connecting end hole 1221, mounting plate 13, fastener mounting hole 131,

[0028] Housing 14, stack connecting terminal 15, cooperation protrusion 151, cooperation hole 1511,

[0029] Terminal seat 16, terminal seat bolt 161, nut 101. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] Reference is made below Figs. 1-3A busbar assembly 10 for a current converter according to an embodiment of the present application is described, which comprises a sealing part 11 and an electric connection wire 12. The electric connection wire 12 has a first connection end 121 and a second connection end 122, and the electric connection wire 12 is arranged through the sealing part 11 so that the first connection end 121 and the second connection end 122 are respectively located on two sides of the sealing part 11, wherein the sealing part 11 has a sealing contact surface surrounding an outer surface of the electric connection wire 12, and the corresponding outer surface is integrally injection molded with the corresponding outer surface of the electric connection wire 12.

[0032] In the related art, the conventional solution for sealing the busbar assembly is to use a large interference fit between the busbar assembly and the rubber sealing gasket to ensure sealing requirements. However, manual assembly cannot be achieved at present, and external equipment needs to be used for auxiliary assembly, thereby causing problems of increasing labor cost of operating personnel and system assembly time.

[0033] Specifically, the busbar assembly 10 comprises the sealing part 11 and the electric connection wire 12. The sealing part 11 can be configured as a rubber part, which can play an insulating role, and the electric connection wire 12 is suitable for transmitting electric energy. The electric connection wire 12 has the first connection end 121 and the second connection end 122, and part of the electric connection wire 12 is arranged through the sealing part 11, so that the first connection end 121 and the second connection end 122 are respectively located on two sides of the sealing part 11. Specifically, the first connection end 121 can be located inside the sealing part 11, and the second connection end 122 can be located outside the sealing part 11.

[0034] In one specific embodiment of the present application, the sealing part 11 and the electric connection wire 12 can be integrally injection molded. Alternatively, the sealing contact surface and the outer surface of the electric connection wire bundle 12 in contact with the sealing contact surface can be integrally injection molded.

[0035] The second connection end 122 located outside the sealing part 11 can be connected to the terminal block 16 in a threaded manner. The terminal block 16 is provided with a terminal block screw 161, and the second connection end 122 is provided with a connection end hole 1221 matched with the terminal block screw 161. By penetrating the terminal block screw 161 into the connection end hole 1221 and cooperating with the nut 101, the second connection end 122 is matched with the terminal block 16 to realize electrical connection.

[0036] Further, the busbar assembly 10 can use a soft copper bar. Designing a traditional hard copper bar into a soft copper bar can indirectly increase the operation space and facilitate installation. When installing the second connection end 122 and the terminal block 16, the operator can use the softness of the soft copper bar to increase the operation space of the operator in the installation of the bolt pretightening force, and also can reduce the manufacturing and processing cost of the busbar assembly 10.

[0037] The sealing part 11 has a sealing contact surface surrounding the outer surface of the electric connection wire 12, and the sealing part 11 and the electric connection wire 12 are integrally injection molded, so as to ensure the sealing requirement between the sealing part 11 and the electric connection wire 12, and further improve the sealing effect between the sealing part 11 and the electric connection wire 12.

[0038] Briefly, according to the busbar assembly 10 for the current converter of the present application, the busbar assembly 10 comprises the sealing part 11 and the electric connection wire 12, the electric connection wire 12 is arranged through the sealing part 11, and the electric connection wire 12 and the sealing part 11 are integrally injection molded, so that the busbar assembly 10 is simple to assemble, easy to operate, does not need to be assembled by external equipment, can meet the sealing requirement between the sealing part 11 and the electric connection wire 12, and further improves the sealing effect of the busbar assembly 10.

[0039] According to an embodiment of the present application, the busbar assembly 10 further comprises the mounting plate 13, the mounting plate 13 can be configured as a metal piece, and the sealing part accommodating hole is arranged on the mounting plate 13, the sealing part accommodating hole is suitable for accommodating the sealing part 11, the sealing part 11 is arranged in the sealing part accommodating hole, and the sealing part 11 and the mounting plate 13 are integrally injection molded, so as to ensure the sealing requirement between the sealing part 11 and the mounting plate 13, and further improve the sealing effect between the sealing part 11 and the mounting plate 13.

[0040] According to an embodiment of the present application, the busbar assembly 10 further comprises the housing 14, the housing 14 can be configured as the shell of the current converter, so as to play the effect of bearing the busbar assembly 10. And the housing 14 further has the mounting plate mounting area opposite to the mounting plate 13 and the sealing part mounting area opposite to the sealing part 11, the mounting plate 13 is arranged in the mounting plate mounting area, and the sealing part 11 is arranged in the sealing part mounting area.

[0041] The sealing part mounting area is provided with the through hole suitable for the electric connection wire 12 to pass through, and part of the electric connection wire 12 is arranged through the through hole, so that the first connection end 121 and the second connection end 122 are respectively located on both sides of the sealing part 11. The sealing part 11 is integrally injection molded with the mounting plate 13 and the housing 14, so as to ensure the sealing requirement between the sealing part 11, the mounting plate 13 and the housing 14, and further improve the sealing effect of the sealing part 11, the mounting plate 13 and the housing 14.

[0042] According to an embodiment of the present application, the mounting plate 13 and the mounting plate mounting area are respectively provided with a plurality of fastener mounting holes 131 corresponding one by one, the plurality of fastener mounting holes 131 are arranged around the outer periphery of the mounting plate 13, and the mounting plate 13 is fixed to the mounting plate mounting area by passing the fastener through the fastener mounting holes 131 on the mounting plate 13 and the mounting plate mounting area, so as to limit the movement of the mounting plate 13.

[0043] According to one embodiment of the present application, a sealant layer is arranged between the mounting plate mounting area of the shell 14 and the mounting plate 13. A sealant can be applied between the contact surface of the mounting plate mounting area of the shell 14 and the mounting plate 13 to offset the risk of seal failure caused by factors such as roughness of the contact surface of the mounting plate mounting area and the mounting plate 13, and further ensure the sealing effect between the shell 14 and the mounting plate 13.

[0044] According to one embodiment of the present application, the busbar assembly 10 further comprises a stack connection terminal 15 which can cooperate with a first connection end 121 located inside the sealing part 11. The first connection end 121 can be provided with a cooperating groove 1211, and the stack connection terminal 15 can be provided with a cooperating protrusion 151. The cooperating protrusion 151 is accommodated in the cooperating groove 1211 by being snap-fitted with the cooperating groove 1211, and the inner peripheral wall of the cooperating groove 1211 is in contact with the outer surface of the cooperating protrusion 151 to limit the lateral movement of the cooperating groove 1211, but not limited thereto. The first connection end 121 can be provided with the cooperating protrusion 151, and the stack connection terminal 15 can be provided with the cooperating groove 1211.

[0045] According to one embodiment of the present application, the inner peripheral wall of the cooperating groove 1211 is provided with cooperating terminals 1212 protruding towards each other, and the outer surface of the cooperating protrusion 151 is provided with cooperating holes 1511 opposite the cooperating terminals 1212. The cooperating terminals 1212 are accommodated in the cooperating holes 1511 by cooperating with the cooperating holes 1511, and the outer peripheral wall of the cooperating terminals 1212 is in contact with the inner peripheral wall of the cooperating holes 1511 to limit the movement of the cooperating terminals 1212, thereby firmly contacting the cooperating groove 1211 and the cooperating protrusion 151.

[0046] According to one embodiment of the present application, the plurality of electric connection wires 12 bundles and the plurality of stack connection terminals 15 are one-to-one corresponding, so as to ensure that the plurality of electric connection wires 12 bundles and the plurality of stack connection terminals 15 can be correspondingly fitted to realize electrical connection, and also reduce the fastening time of the operator and improve the assembly efficiency of the busbar assembly 10.

[0047] The current converter according to the present application will be described briefly below.

[0048] The current converter according to the present application is provided with the busbar assembly 10 of the above-mentioned embodiments. Since the current converter according to the present application is provided with the busbar assembly 10 of the above-mentioned embodiments, the current converter is simple to assemble and easy to operate, does not need to be assembled with the assistance of external equipment, and can also improve the sealing effect of the current converter and ensure the safety performance of the current converter.

[0049] The fuel cell system according to the present application will be described briefly below.

[0050] The fuel cell system according to the present application is provided with the current converter of the above-mentioned embodiment, and since the fuel cell system according to the present application is provided with the current converter of the above-mentioned embodiment, the fuel cell system is simple to assemble, easy to operate, does not need to be assisted by external equipment for assembly, and can also improve the sealing effect of the fuel cell system and ensure the safety performance of the fuel cell system.

[0051] Further, the fuel cell system comprises a fuel cell stack adapted to generate electricity and a power distribution unit, the power distribution unit comprising power electronic elements including the current converter, and the power distribution unit is mainly configured as the current converter, i.e. a DC / DC converter, and the busbar assembly in the present application can be used to connect the busbar between the fuel cell stack and the power distribution unit.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

[0054] In the description of the present application, "a plurality of" means two or more.

[0055] In the description of the present application, "above" or "below" the first feature in the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween.

[0056] In the description of the present application, "above", "over" and "on" the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0057] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the application have been illustrated and described, it will be clear to those of ordinary skill in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the principles and the spirit of the application. The scope of the application is limited only by the claims and the equivalents thereof.

Claims

1. A busbar assembly for a current converter, characterized by The utility model relates to a current converter, comprising: a sealing part (11); an electric connecting line (12) having a first connecting end (121) and a second connecting end (122), the electric connecting line (12) penetrating the sealing part (11) so that the first connecting end (121) and the second connecting end (122) are located on two sides of the sealing part (11) respectively; wherein the sealing part (11) has a sealing contact surface surrounding the outer surface of the electric connecting line (12), the sealing contact surface being integrally injection molded with the corresponding outer surface of the electric connecting line (12); a mounting plate (13) provided with a sealing part accommodating hole suitable for accommodating the sealing part (11), the sealing part (11) being arranged in the sealing part accommodating hole and integrally injection molded with the mounting plate (13); a stack connecting terminal (15) suitable for cooperating with the first connecting end (121) located inside the sealing part (11); wherein the stack connecting terminal (15) is provided with a cooperating groove (1211) on one of the first connecting ends (121), and the stack connecting terminal (15) is provided with a cooperating protrusion (151) on the other of the first connecting ends (121), the cooperating groove (1211) being suitable for accommodating the cooperating protrusion (151) and the inner peripheral wall of the cooperating groove (1211) being in contact with the outer surface of the cooperating protrusion (151).

2. The busbar assembly for a current converter according to claim 1, characterized in that, Further comprising: a shell (14) configured as the shell of the current converter and having a mounting plate mounting area opposite to the mounting plate (13) and a sealing part mounting area opposite to the sealing part (11), the sealing part mounting area being provided with a through hole suitable for the electric connecting line (12) to pass through, the sealing part (11) being integrally injection molded with the mounting plate (13) and the shell (14) respectively.

3. The busbar assembly for a current converter of claim 2, wherein, The mounting plate (13) and the mounting plate mounting area are respectively provided with a plurality of fastener mounting holes (131) corresponding one by one, and the mounting plate (13) is fixed to the mounting plate mounting area by fasteners.

4. The busbar assembly for a current converter of claim 2, wherein, A sealing adhesive layer is arranged between the mounting plate mounting area of the shell (14) and the mounting plate (13).

5. The busbar assembly for a current converter of claim 1, wherein, The inner peripheral wall of the cooperating groove (1211) is provided with cooperating terminals (1212) protruding towards each other on the surfaces opposite to each other, and the outer surface of the cooperating protrusion (151) is provided with a cooperating hole (1511) opposite to the cooperating terminals (1212).

6. The busbar assembly for a current converter of claim 5, wherein, The electric connecting line (12) and the stack connecting terminal (15) are configured as a plurality of corresponding one by one.

7. A current converter characterized by The busbar assembly of any one of claims 1-6.

8. A fuel cell system characterized by comprising: The current converter of claim 7.

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