CN218456074U - Direct current converter and fuel cell system - Google Patents

Abstract

The present application provides a direct current converter, a fuel cell system, the direct current converter is used for being electrically connected with a stack, and is used for converting voltage and controlling current, the direct current converter comprises: a DC converter body; the plug-in component comprises a first copper bar, a second copper bar and a plug port; the first copper bar is electrically connected with the direct current converter body, and the first copper bar is a rigid copper bar; the second copper bar is electrically connected with the first copper bar, and the second copper bar is a flexible copper bar; the interface with the second copper bar electricity is connected, and with the second copper bar can be dismantled fixedly, the interface be used for pegging graft in the pile. According to the direct current converter, the galvanic pile can be directly and electrically connected through the second copper bar to form a current loop, and the current loop can be formed in a mode that the galvanic pile is electrically connected through the socket in a compatible mode, so that the construction of a fuel cell system is completed.

Description

Direct current converter and fuel cell system

Technical Field

The application relates to the technical field of fuel cells, in particular to a direct current converter and a fuel cell system.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is widely used in the field of new energy vehicles at present. Because the direct current power supply generated by the fuel cell has poor voltage stabilization characteristics, the direct current power supply must be converted into stable and adjustable direct current voltage through a direct current converter (DCF) to be output, and then the stable energy supply can be provided for the whole vehicle high-voltage platform. The connecting port of the direct current converter (DCF) and the fuel cell is a copper bar, and the copper bars of the direct current converter (DCF) and the fuel cell are directly fixed and electrically connected, or the connecting port of the direct current converter (DCF) and the fuel cell is a plug connector which is electrically connected; however, in practical use, the direct current converter (DCF) often does not fit the connection port of the fuel cell.

SUMMERY OF THE UTILITY MODEL

The application provides a direct current converter and a fuel cell system, wherein the direct current converter can be directly electrically connected with a galvanic pile through a second copper bar to form a current loop, and can also be compatible with a mode of electrically connecting the galvanic pile through a socket to form the current loop.

A dc converter for electrical connection with a stack for converting voltage and controlling current, the dc converter comprising: a DC converter body; the plug-in component comprises a first copper bar, a second copper bar and a plug port; the first copper bar is electrically connected with the direct current converter body, and the first copper bar is a rigid copper bar; the second copper bar is electrically connected with the first copper bar, and the second copper bar is a flexible copper bar; the interface with the second copper bar electricity is connected, and with the second copper bar can be dismantled fixedly, the interface be used for pegging graft in the pile.

Wherein, the second copper bar is also used for electrically connecting the galvanic pile.

The direct current converter further comprises a bearing piece, one side of the bearing piece is provided with the interface, one side of the bearing piece, which deviates from the interface, is provided with the second copper bar, and the first copper bar and the second copper bar are located on the same side of the bearing piece.

The direct-current converter further comprises a shell, and the shell is used for accommodating the direct-current converter body, the first copper bar and the second copper bar; the bearing piece penetrates through the shell, and the insertion port protrudes out of the outer surface of the shell.

The bearing piece further comprises a sealing piece, the sealing piece is arranged on the surface, facing the first copper bar, of the bearing piece and used for sealing a gap between the bearing piece and the shell.

Wherein, hold carrier and have the recess, the recess is located hold carrier and face the surface of first copper bar, the sealing member sets up in the recess.

The second copper bar comprises a first portion, a second portion and a third portion which are sequentially connected, the first portion is electrically connected with the socket, the third portion is electrically connected with the first copper bar, the first portion and the third portion are both rigid structures, and the second portion is of a flexible structure.

Wherein the second portion comprises a plurality of layers of copper foils stacked in sequence.

The plug-in assembly comprises a positive plug-in assembly and a negative plug-in assembly, and the positive plug-in assembly is used for electrically connecting the cathode of the pile and the cathode of the direct current converter body; the negative pole plug-in assembly is used for electrically connecting the positive pole of the pile and the positive pole of the direct current converter body.

The present application also provides a fuel cell system comprising: a galvanic pile; and the direct current converter, the interface of direct current converter is connected electrically the galvanic pile.

The direct current converter can be adaptive to various pile connectors, when the pile connectors are plug connectors, the second copper bar of the direct current converter is electrically connected with the plug connector, the plug connector is adaptive to the plug connector of the pile, and the direct current converter and the pile form a current loop through the electrical connection of the plug connector and the plug connector; when the connecting port of the galvanic pile is a copper bar, the second copper bar is detachably connected with the inserting port, the inserting port can be disconnected with the second copper bar, and the second copper bar of the direct current converter can be directly and electrically connected with the galvanic pile, so that the direct current converter and the galvanic pile form a current loop; therefore, the direct current converter can form a current loop with the galvanic pile through the second copper bar or the socket, and good adaptability is shown in an actual application scene. The application also provides a fuel cell system provided with the direct current converter, and the fuel cell system has good disassembly and assembly convenience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a DC converter provided in an embodiment of the present application;

fig. 2 is a disassembled schematic diagram of a dc converter provided in an embodiment of the present application;

FIG. 3 is a schematic view of a plug assembly provided in an embodiment of the present application;

fig. 4 is a disassembled schematic view of the plug assembly provided in the embodiment of the present application;

FIG. 5 is a side view of a plug assembly provided in accordance with an embodiment of the present application;

FIG. 6 is a front view of a plug assembly provided in accordance with an embodiment of the present application;

fig. 7 is a schematic diagram of a fuel cell system according to an embodiment of the present application.

Description of reference numerals:

1-a direct current converter; 100-a dc converter body;

200-a plug-in assembly;

210-a first copper bar; 220-a second copper bar; 221-a first portion; 222-a second portion; 223-third section; 230-a socket;

201-positive plug-in components; 202-a negative plug-in assembly;

300-a carrier; 310-a seal; 320-grooves;

400-a housing;

2-electric pile.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any inventive step are within the scope of protection of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 2 and fig. 7, a dc converter 1, the dc converter 1 is electrically connected to a stack 2 for converting voltage and controlling current, the dc converter 1 includes: a DC converter body 100; the plug assembly 200 comprises a first copper bar 210, a second copper bar 220 and a plug port 230; the first copper bar 210 is electrically connected with the dc converter body 100, and the first copper bar 210 is a rigid copper bar; the second copper bar 220 is electrically connected with the first copper bar 210, and the second copper bar 220 is a flexible copper bar; the inserting port 230 is electrically connected with the second copper bar 220 and detachably fixed to the second copper bar 220, and the inserting port 230 is used for being inserted into the electric pile 2.

In the present application, the dc converter 1 has a plug assembly 200, the plug assembly 200 has two ways of electrically connecting with the stack 2, optionally, as shown in a diagram a in fig. 7, the plug assembly 200 includes a first copper bar 210, when the circuit interface of the stack 2 is a copper bar, the second copper bar 220 is electrically connected with the dc converter body 100 and the stack 2 respectively, in other words, the dc converter body 100 is directly electrically connected with the stack 2 through the second copper bar 220; when the circuit interface of the stack 2 is a plug connector that needs to be adapted to the socket connector 230, the second copper bar 220 cannot be electrically connected to the stack 2, optionally, as shown in fig. 7 b, the second copper bar 220 is electrically connected to the socket connector 230, in other words, the socket connector 230 adapted to the plug connector of the stack 2 can be electrically connected to the first copper bar 210 through the second copper bar 220, so as to electrically connect the dc converter body 100, and further the dc converter 1 and the stack 2 form a current loop, so as to stabilize the output voltage of the stack 2 and be used for converting the voltage and controlling the current; the dc converter 1 of the present application matches various circuit interfaces of the stack 2 by switching the second copper bar 220 and the socket 230.

In a possible embodiment, the second copper bar 220 is also used for electrically connecting the galvanic pile 2.

Optionally, in the present application, the second copper bar 220 of the dc converter 1 and the socket 230 are detachably fixed, and when the circuit interface of the stack 2 is a copper bar, the second copper bar 220 of the dc converter 1 can be separated from the socket 230, so that the second copper bar 220 is directly electrically connected to the stack 2, and thus the dc converter 1 and the stack 2 form a current loop to stabilize the output voltage of the stack 2.

Optionally, this application direct current converter 1 the second copper bar 220 with first copper bar 210 can be dismantled fixedly, works as when the circuit interface of pile 2 is the copper bar, direct current converter 1 the second copper bar 220 can break away from first copper bar 210 makes first copper bar 210 direct electric connection pile 2, thereby makes direct current converter 1 with pile 2 forms the current loop, in order to stabilize pile 2's output voltage.

Referring to fig. 3 and fig. 4, in a possible embodiment, the dc converter 1 further includes a carrier 300, the socket 230 is disposed on one side of the carrier 300, the second copper bar 220 is disposed on one side of the carrier 300 away from the socket 230, and the first copper bar 210 and the second copper bar 220 are located on the same side of the carrier 300.

Optionally, the bearing component 300 is respectively provided with the socket 230 and the second copper bar 220, specifically, the socket 230 and the second copper bar 220 are respectively disposed on two sides of the bearing component 300, and the bearing component 300 is used for fixing the position of the socket 230; the supporting member 300 is connected to the second copper bar 220, when the dc converter 1 is started, the second copper bar 220 resonates with the supporting member, and in order to prevent the socket 230 from shaking, the supporting member 300 positions the socket 230, so as to prevent the socket 230 from contacting with the plug connector of the stack 2 under vibration.

Optionally, the bearing component 300 includes a first bearing port and a second bearing port, the first bearing port and the second bearing port are arranged side by side, the first bearing port and the second bearing port are through openings, and the insertion port 230 is fixed in the first bearing port and the second bearing port in a clamping manner; the first bearing port and the second bearing port fix the position of the socket 230, when the dc converter 1 is started, the second copper bar 220 resonates therewith, and the first bearing port and the second bearing port position the socket 230, so as to avoid poor contact between the socket 230 and the plug connector of the stack 2 under vibration; the socket 230 is tightly fixed in the first carrying port and the second carrying port to ensure the tightness of the interior of the dc converter 1.

Referring to fig. 1 to 4, in a possible implementation manner, the dc converter 1 further includes a housing 400, where the housing 400 is used to accommodate the dc converter body 100, the first copper bar 210 and the second copper bar 220; the carrier 300 is disposed through the housing 400, and the insertion port 230 protrudes from an outer surface of the housing 400.

Optionally, the casing 400 includes a receiving member and a cover plate, the receiving member has a receiving cavity and a receiving opening, the receiving cavity is used for receiving the dc converter body 100, the first copper bar 210 and the second copper bar 220, and the cover plate covers the receiving opening, so that the receiving cavity forms a closed space to seal and protect the dc converter body 100, the first copper bar 210 and the second copper bar 220; the housing 400 is provided with a through hole, the carrier 300 is disposed through the housing 400 through the through hole, and the socket 230 and the second copper bar 220 are respectively disposed on two sides of the carrier 300, in other words, the socket 230 and the second copper bar 220 are respectively disposed on two sides of the cover plate; the socket 230 protrudes from the outer surface of the housing 400, in other words, the socket 230 is disposed on a side of the cover plate away from the receiving member, and the second copper bar 220 is disposed on a side of the cover plate close to the receiving member, that is, the second copper bar 220 is located in the housing 400.

Referring to fig. 1 to 4, in a possible embodiment, the carrier 300 further includes a sealing member 310, and the sealing member 310 is disposed on a surface of the carrier 300 facing the first copper bar 210, and is used for sealing a gap between the carrier 300 and the housing 400.

Optionally, the sealing member 310 is disposed between the carrier 300 and the housing 400 for sealing a gap between the carrier 300 and the housing 400; optionally, both the carrier 300 and the cover plate are made of rigid materials, when the carrier 300 abuts against the cover plate, a gap may exist between the carrier 300 and the cover plate, which results in poor sealing performance of the housing 400, for this reason, the sealing member 310 is provided between the carrier 300 and the housing 400, that is, the carrier 300 abuts against the housing 400 through the sealing member 310, and the sealing member 310 is made of a flexible material, and may fill the gap between the carrier 300 and the cover plate, so as to improve the sealing performance of the housing 400, and in some embodiments, the sealing member 310 may enable the protection safety level of the housing 400 to reach the IP67 standard.

Wherein, the IP67 standard refers to a protection security level. IP is an abbreviation for Ingress Protection Rating (or International Protection code) that defines the Protection of an interface against liquid and solid particles. The IP is followed by 2 digits, the 1 st is a solid protection grade, the range is 0-6, and the protection from large-particle foreign matters to dust is respectively represented; the 2 nd is the liquid protection level, ranging from 0 to 8, which respectively represents protection against pressure from vertical drops to the bottom of the water. Larger numbers indicate greater power.

Referring to fig. 1 to 4, in one possible embodiment, the carrier 300 has a groove 320, the groove 320 is located on a surface of the carrier 300 facing the first copper bar 210, and the sealing member 310 is disposed in the groove 320.

Optionally, a portion of the sealing member 310 is disposed in the groove 320, so that the groove 320 fixes the position of the sealing member 310, and the sealing member 310 further abuts against the housing 400 to fill a gap between the carrier 300 and the cover plate, thereby improving the sealing performance of the housing 400.

Referring to fig. 5, in a possible implementation manner, the second copper bar 220 includes a first portion 221, a second portion 222, and a third portion 223 connected in sequence, the first portion 221 is electrically connected to the socket 230, the third portion 223 is electrically connected to the first copper bar 210, the first portion 221 and the third portion 223 are both rigid structures, and the second portion 222 is a flexible structure.

Optionally, the second portion 222 is a flexible structure; the direct current converter 1 further comprises an inductance module, when the direct current converter 1 works, the electric pile 2 is electrically connected with the inductance module, the inductance module converts the voltage of the electric pile 2 into stable and adjustable direct current voltage to be output, and in the process, the inductance module can generate resonance; second copper bar 220 this application second portion 222 is flexible structure, can be in play the cushioning effect when inductance module resonates, eliminate first portion 221 with the stress of third portion 223 tie point avoids the electric current to take place contact failure.

Optionally, an insulating layer is disposed on a surface of the second portion 222, and the insulating layer is used for electrically insulating the second portion 222 from the outside.

Optionally, the first portion 221 and the third portion 223 of the second copper bar 220 are both rigid structures, and the rigid structures are favorable for being tightly and firmly attached to the socket 230 and the first copper bar 210, so that the first portion 221 and the socket 230, and the third portion 223 and the first copper bar 210 have stable contact areas, so as to avoid that after the dc converter 1 is started, resonance of the second portion 222 drives the first portion 221 and the third portion 223 to vibrate, which results in poor circuit contact; in addition, the first part 221 and the third part 223 of the second copper bar 220 are both rigid structures, which is beneficial to improving the overall stability, and the rigid structures are convenient to install in practical application.

Referring to fig. 6, in one possible embodiment, the second portion 222 includes a plurality of copper foils stacked in sequence.

Alternatively, the second portion 222 is formed by laminating a plurality of copper foils, so that the second portion 222 has certain plasticity while maintaining high strength, thereby performing flexible electrical connection and absorbing resonance.

In a possible embodiment, the plug assembly 200 includes a positive plug assembly 201 and a negative plug assembly 202, the positive plug assembly 201 is used for electrically connecting the negative pole of the stack 2 and the negative pole of the dc converter body 100; the negative plug assembly 202 is used for electrically connecting the positive pole of the stack 2 and the positive pole of the dc converter body 100.

Optionally, the first copper bar 210 includes a first sub copper bar and a second sub copper bar; the second copper bar 220 comprises a third sub copper bar and a fourth sub copper bar; the socket 230 includes a first socket 230 and a second socket 230; the positive plug-in component 201 is electrically connected in sequence by the first sub copper bar, the third sub copper bar and the first plug-in port 230, the first sub copper bar is electrically connected with the negative electrode of the dc converter body 100, the first plug-in port 230 is electrically connected with the negative electrode of the stack 2, so that the positive plug-in component 201 is electrically connected with the negative electrode of the dc converter body 100 and the negative electrode of the stack 2; the negative plug-in assembly 202 is electrically connected by the second sub copper bar, the fourth sub copper bar and the second plug-in port 230 in sequence, the second sub copper bar is electrically connected with the positive electrode of the dc converter body 100, and the second plug-in port 230 is electrically connected with the positive electrode of the stack 2, so that the negative plug-in assembly 202 is electrically connected with the positive electrode of the dc converter body 100 and the positive electrode of the stack 2; in summary, the dc converter body 100 and the stack 2 are electrically connected through the positive plug assembly 201 and the negative plug assembly 202 to form a current loop, so that the dc converter 1 can convert the dc power generated by the stack 2 into a stable and adjustable dc voltage for output.

Referring to fig. 7, the present application further provides a fuel cell system, including: a galvanic pile 2; and the direct current converter 1, the socket 230 of the direct current converter 1 is electrically connected with the stack 2.

Optionally, the system of the stack 2 includes the dc converter 1 described herein, and the dc converter 1 described herein may be directly electrically connected to the stack 2 through the second copper bar 220; the direct current converter 1 can also enable the second copper bar 220 to be electrically connected with the electric pile 2 through the interface 230; the direct current converter 1 has various electric connection modes, so that the galvanic pile 2 system has good disassembly and assembly convenience.

It should be noted that, the present application is directed to providing a dc converter, which achieves the objectives of the present application by setting the connection relationship among the devices (such as the first copper bar 210, the second copper bar 220, the socket 230, etc.). The signals processed by each device are only functions which can be realized by itself, and the algorithm or software level improvement is not carried out on each device, so that the application is not considered to be in conformity with the object protected by the utility model by the patent law.

Although embodiments of the present application have been shown and described, it should be understood that they have been presented by way of example only, and not limitation, and that various changes, modifications, substitutions and alterations can be made by those skilled in the art without departing from the scope of the present application, and such improvements and modifications are to be considered as within the scope of the present application.

Claims (10)

1. A dc converter for electrical connection with a stack for converting voltage and controlling current, the dc converter comprising:

a DC converter body; and

the plug-in component comprises a first copper bar, a second copper bar and a plug port;

the first copper bar is electrically connected with the direct current converter body, and the first copper bar is a rigid copper bar; the second copper bar is electrically connected with the first copper bar, and the second copper bar is a flexible copper bar; the interface with the second copper bar electricity is connected, and with the second copper bar can be dismantled fixedly, the interface be used for pegging graft in the pile.

2. The dc converter of claim 1, wherein the second copper bar is further configured to electrically connect the stack.

3. The dc converter according to claim 1, further comprising a carrier, wherein the socket is disposed on one side of the carrier, the second copper bar is disposed on a side of the carrier away from the socket, and the first copper bar and the second copper bar are disposed on the same side of the carrier.

4. The dc converter according to claim 3, further comprising a housing for accommodating the dc converter body, the first copper bar and the second copper bar; the bearing piece penetrates through the shell, and the insertion port protrudes out of the outer surface of the shell.

5. The DC converter of claim 4, wherein the carrier further comprises a seal disposed on a surface of the carrier facing the first copper bar for sealing a gap between the carrier and the housing.

6. The DC converter of claim 5, wherein the carrier has a groove in a surface of the carrier facing the first copper bar, the seal being disposed in the groove.

7. The direct current converter according to claim 1, wherein the second copper bar comprises a first portion, a second portion and a third portion which are connected in sequence, the first portion is electrically connected with the socket, the third portion is electrically connected with the first copper bar, the first portion and the third portion are both rigid structures, and the second portion is a flexible structure.

8. The dc converter of claim 7, wherein the second portion comprises a plurality of layers of copper foil disposed in a stacked arrangement in sequence.

9. The DC converter according to claim 1, wherein the plug assembly comprises a positive plug assembly and a negative plug assembly, and the positive plug assembly is used for electrically connecting the cathode of the pile and the cathode of the DC converter body; the negative pole plug-in assembly is used for electrically connecting the positive pole of the pile and the positive pole of the direct current converter body.

10. A fuel cell system, characterized by comprising:

a galvanic pile; and

the dc converter of any of claims 1-9, wherein the socket of the dc converter is electrically connected to the stack.

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