JP2008311038A - Fuel cell system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell system preventing electromagnetic interferences on other equipment through efficient set-up of constituent equipment. <P>SOLUTION: The fuel cell system is provided with a power conversion device (11), and power source devices (23, 24), including fuel cells and set up so as to cover at least two faces of the power conversion device for attenuating the electromagnetic wavess generated at the power conversion device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel cell system provided with a power conversion device, and more particularly to an arrangement technique of each component device.

  As a fuel cell system mounted on a vehicle, a direct current output from a fuel cell or a secondary battery is converted into a three-phase alternating current by an inverter after passing through a distributor and supplied to a driving motor for traveling. (See Patent Document 1 below).

  In such a fuel cell system, efforts are made to expand the passenger space and the cargo space by efficiently arranging the devices constituting the system. Patent Document 2 below discloses a technique in which a PCU (Power Control Unit), a battery, a fuel cell stack, and a fuel tank are arranged so as to be adjacent to each other as a structural member of a vehicle body. Patent Document 3 below discloses a technique for arranging a PCU so as to be adjacent to the upper surface of a fuel cell 200 in an electric vehicle using a fuel cell.

  By the way, power converters, such as an inverter, generate electromagnetic wave noise by the switching operation | movement at the time of converting the direct-current power supplied from a fuel cell or a secondary battery into alternating current power. Electromagnetic noise is also generated by currents flowing through the power lines between the power conversion device and the fuel cell and between the power conversion device and the travel drive motor, affected by the switching operation.

  Therefore, in a system having such a power conversion device, electromagnetic noise generated from the power conversion device or the like may cause a nearby device to malfunction, so various EMC (ElectroMagnetic Compatibility) measures are taken.

In the following Patent Document 4, in a system having such a power conversion means (inverter), in order to reduce electromagnetic noise generated from a battery current flowing through a power line between the battery and the power conversion means, the battery and the power conversion means It has been proposed that the length of the power line between the two is shorter than the length of the power line between the power conversion means and the motor. In this method, the motor is regarded as a current source, and the battery is regarded as a voltage source, so that the battery current flowing between the battery and the power conversion means is generated more than the motor current flowing between the motor and the power conversion means. Judged that there is little electromagnetic noise.
International Publication No. 2004/20237 Pamphlet JP 2005-112112 A JP 2002-370544 A JP 7-7810 A

  However, the above-mentioned conventional EMC countermeasures are individually applied to each electromagnetic noise source such as an inverter or other power converter and each electromagnetic noise radiation source such as a power line connecting the power converter and other devices. It was given. As a result, the system scale is increased by the members provided for EMC countermeasures, and conversely, the space utilization efficiency is lowered.

  An object of the present invention is to provide a fuel cell system in which constituent devices are efficiently arranged to prevent electromagnetic interference to other devices.

  The present invention employs the following means in order to solve the above-described problems. That is, the present invention is a fuel comprising a power conversion device and a power supply device including a fuel cell, which is provided so as to cover at least two surfaces of the power conversion device and attenuates electromagnetic waves generated by the power conversion device. The present invention relates to a battery system.

  In this invention, it arrange | positions so that at least 2 surfaces of power converters, such as an inverter and a converter, may be covered with the power supply device containing a fuel cell. Here, the power supply device may be one or more fuel cells, or a combination of a fuel cell and one or more storage cells. A power supply device such as a fuel cell or a storage battery (battery) is a device that can attenuate electromagnetic waves because metal is used for its members.

  Therefore, according to the present invention, since the power supply device that covers the power conversion device absorbs the electromagnetic wave generated from the power conversion device, electromagnetic interference to other devices due to the electromagnetic wave noise can be prevented. Furthermore, according to the present invention, since the power supply device is used as a configuration for preventing the emission of electromagnetic wave noise, the number of individual noise countermeasure members can be reduced, and the system can be downsized. it can.

  In the present invention, the power supply device is preferably arranged so as to sandwich the power conversion device.

  According to such a configuration, it is possible not only to prevent radiation of electromagnetic waves generated from the power conversion device, but also to reduce the number of members that fix the power conversion device and efficiently arrange each component device.

  Furthermore, in the present invention, preferably, the power supply device is configured by the same type of power supply, and the power conversion device is sandwiched. For example, the power conversion device is sandwiched between two fuel cells.

  In the present invention, it is preferable that the power supply device is provided so that surfaces having output terminals of the power supply device and having output terminals connected to the power conversion device face each other.

  With such a configuration, when a current affected by the switching operation of the power conversion device flows between the power conversion device and the output terminal of the power supply device, the electromagnetic waves radiated by this current are opposed to each other. The electromagnetic waves received by the respective surfaces having the terminals can be attenuated by the power supply device. That is, electromagnetic interference to other devices due to electromagnetic noise can be prevented.

  Preferably, in the present invention, the power supply device is provided so that each surface having the output terminal of the power supply device and having the output terminal connected to the power conversion device faces the direction of the power conversion device. Like that.

  With such a configuration, electromagnetic waves radiated from the power conversion device and electromagnetic waves radiated from a current flowing between the power conversion device and the output terminal of the power supply device are contained and absorbed between the power conversion device and the power supply device. Can do.

  In the present invention, preferably, the power converter and the fuel cell are accommodated in a common electromagnetic seal container.

  With such a configuration, electromagnetic waves radiated from a surface not covered by the power supply device can be absorbed by the electromagnetic seal container, and electromagnetic interference to other devices due to electromagnetic noise can be further prevented. it can. Since the power conversion device and the power supply device are adjacent to each other, the electromagnetic seal container can be made small. Furthermore, the exhaust heat of the power converter can be used for warming up the fuel cell.

  ADVANTAGE OF THE INVENTION According to this invention, the fuel cell system which arrange | positions a component apparatus efficiently and prevents the electromagnetic interference to another apparatus can be provided.

  Hereinafter, a fuel cell system according to an embodiment of the present invention will be described with reference to the drawings. In addition, the structure of each embodiment described below is an illustration, respectively, and this invention is not limited to the structure of each following embodiment.

[First embodiment]
The fuel cell system according to the first embodiment of the present invention will be described below.

〔System configuration〕
The system configuration of the fuel cell system according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram schematically showing an electric circuit configuration of the fuel cell system in the first embodiment. FIG. 2 is an exploded perspective view showing a system configuration example of the fuel cell system in the first embodiment.

  As shown in FIG. 1, the fuel cell system in the present embodiment includes a travel drive motor 10, an inverter 11 (corresponding to the power conversion device of the present invention), a fuel cell 20 (corresponding to the power supply device of the present invention), and the like. Consists of

  The fuel cell 20 has a positive electrode terminal 21 and a negative electrode terminal 22 as output terminals. The positive terminal 21 and the negative terminal 22 are connected to the inverter 11 through power lines. As a result, the DC power generated by the fuel cell 20 is applied to the inverter 11. The inverter 11 converts the DC power supplied from the fuel cell 20 into three-phase AC power and sends it to the drive motor 10. The drive motor 10 rotates the wheel shaft and the like by this AC power.

  At this time, in the inverter 11, an electromagnetic wave is generated for each switching operation of a power element or the like when converting a large direct current supplied from the fuel cell 20 into an alternating current. Further, this electromagnetic wave is also generated from a current affected by the switching operation, that is, a current flowing through the power line between the inverter 11 and the fuel cell 20. The electromagnetic wave generated in this way is radiated from the inverter 11 itself, a power line between the inverter 11 and the fuel cell 20 or the like. The fuel cell system according to the present embodiment employs the following configuration in order to suppress the emission of electromagnetic wave noise.

  As shown in FIG. 2, the fuel cell system in the present embodiment is configured such that the fuel cell 20 is divided into a cell stack 23 and a cell stack 24, and the inverter 11 is sandwiched between the cell stack 23 and the cell stack 24. In FIG. 2, the cell stacks 23 and 24 and the inverter 11 are shown separated from each other, but this is for making the drawing easier to see. Is placed so that

The cell stacks 23 and 24 are configured by stacking a plurality of single cells 25 in series (in the horizontal direction in FIG. 2). The single cell 25 is formed so that the electrolyte membrane is sandwiched between gas diffusion electrodes (a positive electrode plate and a negative electrode plate), and both sides thereof are sandwiched between separators provided with gas supply paths. The single cells 25 are stacked so that the polarities are the same in the cell stacks 23 and 24. In the cell stacks 23 and 24 of the present embodiment, the single cells 25 are stacked such that the left side of FIG. 2 is a positive electrode and the right side of the paper is a negative electrode.

  The cell stacks 23 and 24 include positive current collectors 26 a and 27 a and negative current collectors 26 b and 27 b at both ends of the stacked body of the single cells 25. Each current collecting plate collects the electric energy generated at each electrode of the single cell 25 and outputs the collected energy from each output terminal (the positive terminals 21 and 28 and the negative terminals 22 and 29). Although not shown, in the cell stacks 23 and 24, end plates (not shown) are arranged at both ends of the current collector plate on the outer side in the stacking direction, and each end plate is a stack of single cells 25. It is fixed by being pressed in the direction. The present invention does not limit other configurations (such as a supply system and a discharge system for fuel gas, oxidant gas, cooling water, etc.) that cause the cell stacks 23 and 24 to generate electric power. The description is also omitted.

  The negative electrode terminal 29 of the cell stack 23 and the positive electrode terminal 28 of the cell stack 24 are connected by a power line. As a result, the cell stacks 23 and 24 are electrically connected in series, and desired high power is supplied to the inverter 11 as the entire fuel cell 20. In the present embodiment, the electrical connection between the cell stack 23 and the cell stack 24 is made by connecting the output terminals with the power lines as described above. However, the cell stack 23 and the cell stack 24 are electrically connected in series. As long as it is a connected method, it may be connected by other methods.

  Here, the power line connecting the cell stack 24 and the cell stack 23 in series does not require countermeasures against electromagnetic noise. This is because the current flowing between the positive electrode terminal 28 of the cell stack 24 and the negative electrode terminal 29 of the cell stack 23 is sufficiently absorbed by each cell stack due to the switching operation of the inverter 11. This is because the radiated electromagnetic noise is considered to be extremely small.

  On the other hand, the positive terminal 21 of the cell stack 23 and the negative terminal 22 of the cell stack 24 are connected to the inverter 11 via a short power line.

  The inverter 11 is composed of a power transistor or the like and is accommodated in an electromagnetic seal container having a heat dissipation function. Similarly, power lines connecting the inverter 11 and the output terminals (the positive terminal 21 and the negative terminal 22) of the cell stacks 23 and 24 are also accommodated in this electromagnetic seal container.

  The electromagnetic seal container may open each surface facing the positive electrode side end surface of the cell stack 23 and the negative electrode side end surface of the cell stack 24. Since each open surface is covered with each end surface of the cell stacks 23 and 24, the electromagnetic waves generated from the elements of the inverter 11 and the output terminals of the inverter 11 and the cell stacks 23 and 24 (the positive terminal 21 and the negative terminal 22). ) Can be attenuated by a plurality of single cells 25 constituting each cell stack. This is because a metal is used as a constituent member of the single cell 25, and a cell stack formed by stacking the single cells 25 acts as an electromagnetic wave sealing material.

  Furthermore, regarding the inverter 11, if each surface facing the positive electrode side end surface of the cell stack 23 and the negative electrode side end surface of the cell stack 24 is formed to have a larger area than the other surfaces, a member that forms an electromagnetic seal container is provided. Can be reduced. The present invention does not limit the circuit configuration for realizing the inverter 11. Further, the electromagnetic seal container may house the drive motor 10 together with the inverter 11.

[Operation and effect of the first embodiment]
In the fuel cell system of the first embodiment, the fuel cell 20 is configured by electrically connecting the cell stack 23 and the cell stack 24 in series, and the electric power generated in each of the cell stacks 23 and 24 is positive terminal 21. And supplied to the inverter 11 via the negative terminal 22.

  The DC power supplied from the fuel cell 20 is converted into three-phase AC power in the inverter 11 and used as power for the drive motor 10. At this time, an electromagnetic wave is generated by a switching operation of a power element constituting the inverter 11, and the electromagnetic wave is radiated from the inverter 11 itself, a power line connecting the inverter 11 and the fuel cell 20, or the like.

  In the fuel cell system of this embodiment, the inverter 11 is covered with the positive electrode side end surface of the cell stack 23 and the negative electrode side end surface of the cell stack 24, and the other surface of the inverter 11 that does not face the end surface of each cell stack is an electromagnetic seal container. Covered with. Moreover, the electric power line which connects the inverter 11 and each cell stack is accommodated in this electromagnetic seal container.

  Thereby, the electromagnetic waves radiated from the inverter 11 itself and the power line connecting the inverter 11 and the fuel cell 20 are attenuated by the plurality of single cells 25 stacked on the electromagnetic seal container or each cell stack.

  Therefore, according to the present embodiment, electromagnetic waves generated and radiated by the inverter 11 can be reduced, so that electromagnetic interference to other devices can be prevented.

  Furthermore, in order to obtain such an effect, the inverter 11 and the fuel cell 20 are configured so as to be adjacent to each other, and it is only necessary to have an electromagnetically sealed container that can accommodate the inverter 11. it can. Furthermore, since the two surfaces of the inverter 11 are sandwiched between the cell stacks 23 and 24 of the fuel cell 20, the surfaces of the electromagnetic seal container that are close to these cell stacks can be opened. Can be reduced.

[Second Embodiment]
The fuel cell system according to the second embodiment of the present invention will be described below.

〔System configuration〕
The system configuration of the fuel cell system according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a diagram schematically showing an electric circuit configuration of the fuel cell system in the second embodiment. FIG. 4 is an exploded perspective view showing a system configuration example of the fuel cell system according to the second embodiment.

  As shown in FIG. 3, the fuel cell system according to the second embodiment of the present invention includes a direct current / direct current (DC / DC) converter (hereinafter simply referred to as converter or DC / DC) in addition to the system configuration of the first embodiment. 31 (corresponding to the power conversion device of the present invention), and a storage battery 35 (corresponding to the power supply device of the present invention) as a secondary battery. The fuel cell 20 is connected in parallel to the storage battery 35 together with the inverter 11. As a result, the DC power supplied by the fuel cell 20 is applied to the storage battery 35 and the inverter 11. The storage battery 35 charges the power output from the fuel cell 20 and discharges the charged power.

A converter 31 is connected to the power line connecting the fuel cell 20 and the storage battery 35. The converter 31 operates as a step-up / step-down voltage converter, and performs control of power supply from the fuel cell 20 to the storage battery 35, control of the output power ratio of the fuel cell 20 and the storage battery 35 to the inverter 11, and the like. In addition, since the functions of the inverter 11 and the drive motor 10 are the same as those in the first embodiment, description thereof is omitted here.

  In the converter 31, switching is performed to convert and adjust DC power supplied from the fuel cell 20 or the storage battery 35 by a power transistor or the like constituting the converter 31. The switching operation by the converter 31 generates an electromagnetic wave as in the inverter 11.

  Therefore, in the fuel cell system in the second embodiment, the inverter 11, the converter 31, the power line connecting the inverter 11 and the fuel cell 20, the power line connecting the inverter 11 and the converter 31, and the power line connecting the converter 31 and the storage battery 35 are provided. Each can be a source of electromagnetic noise. The fuel cell system according to the present embodiment employs the following configuration in order to suppress the emission of electromagnetic wave noise.

  As shown in FIG. 4, the fuel cell system in the present embodiment is configured such that the inverter 11 and the converter 31 are sandwiched between the fuel cell 20 and the storage battery 35. Hereinafter, the configuration of each device will be specifically described.

  The fuel cell 20 includes a cell stack 23 and a cell stack 24, and the cell stacks 23 and 24 are arranged so as to be adjacent to each other. In addition, each end face of the fuel cell 20 having each output terminal (the positive terminal 21 of the cell stack 23 and the negative terminal 22 of the cell stack 24) connected to the inverter 11 via the power line is one surface of the inverter 11. It arrange | positions so that it may oppose. The configuration of the cell stacks 23 and 24 itself is the same as in the first embodiment.

  However, the second embodiment is different from the first embodiment in that each cell stack is arranged so that the polarity is opposite in the stacking direction of the single cells 25 with the arrangement of each cell stack. Specifically, the single cells 25 of the cell stack 23 are stacked such that the right side of FIG. 4 is a positive electrode and the left side of the paper is a negative electrode, and the single cell 25 of the cell stack 24 is the positive side of the left side of FIG. Are laminated so as to be a negative electrode.

  The cell stack 23 and the cell stack 24 are connected so as to be electrically in series as in the first embodiment. As for the connection between the cell stack 23 and the cell stack 24, each output terminal may be connected by a power line as in the first embodiment. In the second embodiment, since the cell stack 23 and the cell stack 24 are adjacent to each other, the positive electrode current collector plate 27a of the cell stack 24 and the negative electrode current collector plate of the cell stack 23 are provided without providing the positive electrode terminal 28 and the negative electrode terminal 29. Each cell stack may be connected by a single plate in contact with any one of 26b. For the same reason as in the first embodiment, it is not necessary to take countermeasures against electromagnetic waves for power lines or plates that connect the cell stack 24 and the cell stack 23 in series.

  Inverter 11 is arranged so as to be sandwiched between fuel cell 20 and converter 31. Specifically, the inverter 11 is disposed so that one surface faces each end surface having the output terminal of the fuel cell 20 as described above, and the rear surface faces one surface of the converter 31. Is done. The configuration of the inverter 11 itself and the structure of the electromagnetic seal container that houses the inverter 11 are the same as in the first embodiment. The power line connecting the inverter 11 and the converter 31 is also housed in the electromagnetic seal container in the same manner as the power line connecting the inverter 11 and the fuel cell 20.

With such a configuration, the electromagnetically sealed container may be formed so as to open the surface in the direction of the fuel cell 20 and the surface in the direction of the capacitor 31 as in the first embodiment. Since each open surface is covered with the end surfaces of the cell stacks 23 and 24 and the end surface of the capacitor 31, the electromagnetic noise generated from the elements of the inverter 11 and the inverter 11 and the output terminals of the cell stacks 23 and 24 are connected. Electromagnetic wave noise generated from the power line and electromagnetic wave noise generated from the power line connecting the converter 31 and the inverter 11 can be attenuated. This is because electromagnetic noise radiated from the surface in the direction of the fuel cell 20 is absorbed by the plurality of single cells 25 constituting the fuel cell 20, and electromagnetic noise radiated from the surface in the direction of the converter 31 is absorbed by the capacitor 31. This is because that. Electromagnetic noise emitted from other surfaces is absorbed by the electromagnetic seal container.

  Converter 31 is arranged to be sandwiched between inverter 11 and storage battery 35. Specifically, converter 31 is arranged such that one surface faces inverter 11 as described above, and its rear surface faces storage battery 35. The converter 31 is housed in an electromagnetically sealed container like the inverter 11. Note that the present invention does not limit the circuit configuration for realizing the converter 31.

  You may form the electromagnetic seal container which accommodates the converter 11 so that the surface of the inverter 11 direction and the surface of the storage battery 35 direction may each open | release. Since each open surface is covered with the inverter 11 and the storage battery 35, the electromagnetic noise generated from the elements of the converter 31, the electromagnetic noise generated from the power line connecting the inverter 11 and the converter 31, and the converter 31 and the storage battery 35. Electromagnetic wave noise generated from the connecting power lines can be attenuated. This is because electromagnetic wave noise radiated from the surface in the direction of the inverter 11 is absorbed by the inverter 11, and electromagnetic wave noise radiated from the surface in the direction of the storage battery 35 is absorbed by the storage battery 35. Electromagnetic noise emitted from other surfaces is absorbed by the electromagnetic seal container. In addition, you may make it accommodate the inverter 11 and the converter 31 with the same electromagnetic seal container.

  The storage battery 35 includes an internal storage battery 36 and an internal storage battery 37, and is arranged so that each end face having each output terminal (a positive terminal 39 and a negative terminal 38) faces the converter 31. With such a configuration, the storage battery 35 absorbs electromagnetic wave noise radiated from the converter 31 and electromagnetic wave noise radiated from a power line connecting the converter 31 and each internal storage battery. In addition, since this invention does not limit the internal structure of the internal storage batteries 36 and 37, description is abbreviate | omitted here. In addition, as for the storage battery 35, like the fuel cell 20, the example including the internal storage battery 36 and the internal storage battery 37 is shown in FIG. 4, but the end face having each output terminal faces the converter 31. If it arrange | positions, you may make it form as one storage battery.

[Operation and effect of the second embodiment]
In the fuel cell system according to the second embodiment, in the fuel cell 20 in which the cell stack 23 and the cell stack 24 are connected in series, the electric power generated in each of the cell stacks 23 and 24 is positive electrode terminal 21 and negative electrode terminal 22. Are supplied to the inverter 11 and the capacitor 31, respectively.

  The DC power applied to the inverter 11 from the fuel cell 20 or the storage battery 35 is converted into three-phase AC power in the inverter 11 and used as power for the drive motor 10. On the other hand, the DC power applied from the fuel cell 20 to the converter 31 is subjected to power conversion and power adjustment by the converter, and charged to the storage battery 35. At this time, in the inverter 11 and the converter 31, an electromagnetic wave is generated by the switching operation of the power element or the like, and this electromagnetic wave causes the inverter 11 itself, the converter 31 itself, the power line connecting the inverter 11 and the fuel cell 20, the inverter 11 and the converter 31. It is radiated | emitted from the electric power line which connects the power line and converter 31 and the storage battery 35 which connect.

  In the fuel cell system of the present embodiment, the inverter 11 and the converter 31 are disposed adjacent to each other, and the adjacent inverter 11 and converter 31 are disposed so as to be sandwiched between the fuel cell 20 and the storage battery 35 from both sides. Further, the surface of the inverter 11 and the converter 31 that does not oppose any of these devices is covered with an electromagnetic seal container, and power lines serving as electromagnetic noise radiation sources are accommodated in the electromagnetic seal container, respectively.

  Thereby, the electromagnetic waves radiated from the inverter 11 itself, each power line connecting the inverter 11 and each cell stack of the fuel cell 20, and the power line connecting the inverter 11 and the converter 31 are a plurality of single cells 25 of the fuel cell 20, the converter 31. It is absorbed and attenuated by either of the electromagnetic seal containers. Similarly, the electromagnetic wave radiated from each power line connecting the converter 31 itself, the power line connecting the converter 31 and the inverter 11, and each power line connecting the converter 31 and each internal storage battery 35 is either the inverter 11, the storage battery 35, or the electromagnetic seal container. Is absorbed and attenuated.

  Therefore, according to the fuel cell system of the present embodiment, even in the configuration having the inverter 11 and the converter 31 that are electromagnetic wave noise generation sources, the electromagnetic waves generated and radiated therefrom can be reduced. Electromagnetic interference to other equipment can be prevented.

  Furthermore, in order to obtain such an effect, the fuel cell 20, the inverter 11, the converter 31 and the storage battery 35 are configured so as to be adjacent to each other, and only have an electromagnetic seal container that can accommodate the inverter 11 and the converter 31. Because it is good, the system scale can be reduced. Furthermore, by covering each of the two surfaces of the inverter 11 and the converter 31 with any one of the fuel cell 20, the inverter 11, the converter 31 and the storage battery 35, the surfaces covered with these devices of the electromagnetic seal container are opened. Therefore, the number of members constituting the electromagnetic seal container can be reduced.

[Modification of Second Embodiment]
Hereinafter, modifications of the fuel cell system according to the second embodiment of the present invention will be described.

〔System configuration〕
A system configuration in a modification of the fuel cell system according to the second embodiment of the present invention will be described with reference to FIG. FIG. 5 is an exploded perspective view showing a system configuration in a modification of the second embodiment. In the fuel cell system according to the second embodiment described above, each end face of the cell stacks 23 and 24 having each output terminal of the fuel cell 20 is opposed to one face of the inverter 11 and each output terminal of the storage battery 35 is provided. Each end surface of the storage battery 36 and the internal storage battery 37 was disposed so as to face one surface of the converter 31.

  In this modification, in the system having the same electrical configuration as that of the second embodiment, as shown in FIG. 5, the end faces having the output terminals of the cell stacks 23 and 24 constituting the fuel cell 20 face each other, The internal storage batteries 36 and 37 constituting the storage battery 35 are arranged so that the end faces having the output terminals face each other.

  The connection between the positive terminal 28 of the cell stack 24 and the negative terminal 29 of the cell stack 23 is the same as in the first embodiment. Also for the storage battery 35, the internal storage battery 36 and the internal storage battery 37 are connected in series via output terminals 51 and 52. In addition, the connection form between the cell stacks 23 and 24 and the inverter 11, the connection form between the inverter 11 and the converter 31, the connection form between the converter 31 and the internal storage batteries 36 and 37, and the configuration of each device are described above. It is the same as the form.

[Operation and Effect in Modification of Second Embodiment]
In the fuel cell system according to the modification of the second embodiment, the cells constituting the fuel cell 20 are arranged so that the end faces of the fuel cell 20 having the output terminals 21 and 22 connected to the inverter 11 face each other. The stacks 23 and 24 are arranged so as to cover one surface of the inverter 11.

  As a result, the electromagnetic wave radiated from the inverter 11 itself is absorbed by any of the cell stacks 23 and 24, the converter 31, and the electromagnetic seal container. Further, the electromagnetic waves radiated from the power line connecting the inverter 11 and the cell stacks 23 and 24 are absorbed by the plurality of single cells 25 constituting each cell stack because the end faces having the respective output terminals face each other. Or absorbed by the electromagnetic seal container to be accommodated.

  Similarly, each end surface of the storage battery 35 having the output terminals 38 and 39 connected to the converter 31 is disposed so as to face each other, and the internal storage batteries 36 and 37 constituting the storage battery 35 are arranged on one surface of the converter 31. Arranged to cover.

  Thereby, electromagnetic waves radiated from the converter 31 itself are absorbed by any of the internal storage batteries 36 and 37, the inverter 11, and the electromagnetic seal container. Further, the electromagnetic waves radiated from the power line connecting the converter 31 and the internal storage batteries 36 and 37 are absorbed or accommodated by the constituent members of the respective internal storage batteries because the end faces having the respective output terminals face each other. Absorbed by the electromagnetic seal container.

  Therefore, even in the fuel cell system having the configuration as in this modification, it is possible to obtain the same effect as in the second embodiment described above.

  However, according to the configuration in the present modification, the area that can be covered by the fuel cell 20 and the storage battery 35 can be increased compared to the configuration of the second embodiment. Therefore, this modified example is effective when the circuit which implement | achieves the inverter 11 and the converter 31 becomes large.

  Accordingly, according to the present modification, as shown in FIG. 6, circuits for realizing the inverter 11 and the converter 31 may be arranged and accommodated in one electromagnetic seal container 60. FIG. 6 is a diagram illustrating a second system configuration example in a modification of the second embodiment. Thus, according to this modification, since the area which can be covered with the fuel cell 20 and the storage battery 35 is large, even if the inverter 11 and the converter are arranged side by side and accommodated in one electromagnetic seal container 60, radiation of electromagnetic noise is prevented. Can do. Thereby, the system scale can be further reduced.

[Modifications in the first and second embodiments]
In the first embodiment and the second embodiment described above, it has been described that the inverter 11 and the converter 31 are accommodated in the electromagnetic seal containers, respectively, but the fuel cell 20 and the storage battery 35 are also used in common with the inverter 11 and the converter 31. You may make it accommodate in a container. In any of the above-described embodiments, the constituent devices are configured to be adjacent to each other, and thus such a configuration can be adopted.

  If comprised in this way, the electromagnetic waves radiated | emitted from this system can be reduced further, Furthermore, the operating heat which arises from the inverter 11 and the converter 31 can be used for the warming-up of a fuel cell.

It is a figure which shows typically the electric circuit structure of the fuel cell system in 1st embodiment. It is a disassembled perspective view which shows the system structural example of the fuel cell system in 1st embodiment. It is a side surface schematic diagram which shows the structural example of the fuel cell as embodiment. It is a figure which shows typically the electric circuit structure of the fuel cell system in 2nd embodiment. It is a disassembled perspective view which shows the system structural example of the fuel cell system in 2nd embodiment. It is a disassembled perspective view which shows the system configuration | structure in the modification of 2nd embodiment. It is a figure which shows the 2nd system configuration example in the modification of 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Traveling drive motor 11 Inverter 20 Fuel cell 21, 28 Positive electrode terminal (output terminal)
22, 29 Negative terminal (output terminal)
23, 24 Cell stack 25 Single cell 26a, 27a Positive current collector 26b, 27b Negative current collector 31 Direct current / direct current (DC / DC) converter (converter)
35 Storage batteries 36, 37 Internal storage batteries 38, 52 Negative terminal (output terminal)
39, 51 Positive terminal (output terminal)
60 Electromagnetic seal container

Claims (6)

A power converter,
A power supply device including a fuel cell, provided to cover at least two surfaces of the power conversion device, and a power supply device that attenuates electromagnetic waves generated by the power conversion device;
A fuel cell system comprising:   The fuel cell system according to claim 1, wherein the power supply device is provided so as to sandwich the power conversion device.   The fuel cell system according to claim 2, wherein the power supply device is a power supply of the same type.   4. The fuel cell system according to claim 1, wherein the power supply device is provided such that surfaces having output terminals connected to the power conversion device face each other. 5.   The said power supply device is provided so that each surface which has an output terminal connected to the said power converter device may face the said power converter device direction, and it is any one of Claim 1 to 3 characterized by the above-mentioned. Fuel cell system.   The fuel cell system according to any one of claims 1 to 5, wherein the power conversion device and the fuel cell are accommodated in a common electromagnetic seal container.

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