JP2017135093A - Fuel cell unit and vehicle including fuel cell unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell unit which can restrain a significant design change thereof.SOLUTION: A fuel cell unit includes: a fuel cell which has a plurality of single cells laminated in a given direction; and a converter which has a plurality of combinations of a reactor electrically connected with the fuel cell and a power module electrically connected with the reactor. At least either a direction in which a plurality of the reactors are arrayed or a direction in which a plurality of the power modules are arrayed is substantially parallel with a lamination direction of the single cells.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fuel cell unit.

  The fuel cell unit includes a fuel cell having a plurality of stacked single cells, and a converter having a plurality of combinations of a reactor electrically connected to the fuel cell and a power module electrically connected to the reactor. There is a thing (patent document 1). The fuel cell unit is mounted, for example, as one of the power sources for driving the motor in an electric vehicle that can travel by driving the motor.

JP 2014-187831 A

  In the fuel cell unit of Patent Document 1, the direction in which the reactors are arranged in the converter and the direction in which the power modules are arranged in the converter are substantially perpendicular to the stacking direction in which a plurality of single cells are stacked in the fuel cell. In such a fuel cell unit, the number of single cells may be changed in order to finish the output performance according to the type of electric vehicle on which the fuel cell unit is mounted. Generally, when the output performance is increased, the number of reactors and power modules is increased, and when the output performance is decreased, the number of reactors and power modules is decreased. Therefore, the number of reactors and power modules is changed according to the change in output performance. However, in such a case, the change direction of the dimensions of the fuel cell having a plurality of single cells and the change direction of the dimensions of the reactor and the power module are substantially orthogonal, and the change direction of the dimensions is different. There was a problem that it was necessary to change significantly. In order to solve such a problem, when designing a fuel cell unit having an output performance corresponding to the vehicle type of the electric vehicle, a technique capable of suppressing a drastic change in the design of the fuel cell unit has been desired. .

  The present invention has been made to solve the above-described problems, and can be realized as the following forms.

  (1) According to one aspect of the present invention, a fuel cell unit is provided. The fuel cell unit includes a plurality of combinations of a fuel cell having a plurality of single cells stacked in a certain direction, a reactor electrically connected to the fuel cell, and a power module electrically connected to the reactor. And a converter including the converter, wherein at least one of a direction in which the plurality of reactors are arranged and a direction in which the plurality of power modules are arranged is substantially parallel to a stacking direction of the single cells. According to this embodiment, in the fuel cell unit, the direction in which the reactors and the power modules having a size that greatly affects the design of the fuel cell unit are aligned and the stacking direction in which the single cells are stacked are approximately defined. Can be parallel. For this reason, compared with the configuration in which the direction in which the reactor and the power module have a size that greatly affects the design of the fuel cell unit is aligned and the stacking direction in which the single cells are stacked is substantially orthogonal, Since the change direction of the dimension of the fuel cell having a plurality of single cells is substantially parallel to the change direction of at least one of the reactor and the power module, and the change direction of the dimension is the same, When designing a fuel cell unit having a corresponding output performance, it is possible to suppress a significant change in the design of the fuel cell unit. That is, the design change of the fuel cell unit caused by adjusting the number of reactors and power modules and the number of single cells can be suppressed from becoming complicated. In addition, since the increase / decrease in the output performance corresponds to the increase / decrease in the size of the fuel cell unit, it is possible to produce a fuel cell unit of a size having a variation corresponding to the increase / decrease in the output performance.

  (2) In the fuel cell unit according to the above aspect, the fuel cell may be arranged on the upper side in the gravity direction of the power module or on the lower side in the gravity direction of the power module.

  (3) In the fuel cell unit according to the above aspect, both the direction in which the reactors are arranged and the direction in which the power modules are arranged may be substantially parallel to the stacking direction of the single cells.

  (4) Another embodiment of the present invention is a vehicle including the fuel cell unit according to the above embodiment. In this vehicle, the stacking direction may be substantially parallel to a vehicle width direction of the vehicle when the fuel cell unit is mounted on the vehicle. According to this aspect, even when the length in the vehicle width direction changes, the design change of the fuel cell unit is facilitated, and the response to the development of variations of the vehicle is facilitated. In other words, since it is possible to design a fuel cell unit of a size having variations according to the increase or decrease in output performance, it becomes easy to cope with the development of variations in vehicles.

  (5) Another embodiment of the present invention is a vehicle including the fuel cell unit according to the above embodiment. In this vehicle, the stacking direction may be substantially parallel to the front-rear direction of the vehicle when the fuel cell unit is mounted on the vehicle. According to this aspect, even when the length in the front-rear direction changes, the design change of the fuel cell unit is facilitated, and the response to the development of variations of the vehicle is facilitated. In other words, since it is possible to design a fuel cell unit of a size having variations according to the increase or decrease in output performance, it becomes easy to cope with the development of variations in vehicles.

  The form of the present invention is not limited to the fuel cell unit, and can be applied to various forms such as a fuel cell unit mounted on a ship using electric power as a power source, a household fuel cell unit, and the like. It is. Further, the present invention is not limited to the above-described embodiments, and it is needless to say that the present invention can be implemented in various forms without departing from the spirit of the present invention.

It is the conceptual diagram which showed the arrangement configuration of the fuel cell unit in embodiment of this invention. It is explanatory drawing when a fuel cell unit is seen from the minus side of the Z-axis direction. It is explanatory drawing when a fuel cell unit is seen from the + side of the Z-axis direction. It is explanatory drawing which shows the circuit structure of a fuel cell unit. It is explanatory drawing which showed the change when the design of a fuel cell unit is changed. It is explanatory drawing which shows the outline of the vehicle provided with the fuel cell unit in 1st Embodiment. It is explanatory drawing which shows the outline of the vehicle provided with the fuel cell unit in 1st Embodiment. It is the conceptual diagram which showed the arrangement configuration of the fuel cell unit in other embodiment. It is explanatory drawing which showed the change when the design of the fuel cell unit in other embodiment is changed. It is the conceptual diagram which showed the arrangement configuration of the fuel cell unit in other embodiment.

A. First embodiment:
FIG. 1 is a conceptual diagram showing an arrangement configuration of a fuel cell unit 100 according to an embodiment of the present invention. FIG. 1 shows XYZ axes orthogonal to each other. The XYZ axes in FIG. 1 correspond to the XYZ axes in the other drawings. The fuel cell unit 100 is mounted as a power source for a vehicle driven by a motor. The fuel cell unit 100 includes a fuel cell case 200 and a converter case 300.

  FIG. 2 is an explanatory diagram when the fuel cell unit 100 is viewed from the negative side in the Z-axis direction. The fuel cell case 200 is a box-shaped member disposed on the negative side of the converter case 300 in the Z-axis direction. In the present embodiment, the size of the fuel cell case 200 is smaller than the converter case 300. A fuel cell 210 is accommodated inside the fuel cell case 200.

  The fuel cell 210 has a plurality of single cells 220 that generate electric power by an electrochemical reaction of a reaction gas. The single cell 220 is fastened while being applied with a compressive load in a state of being stacked in the stacking direction D1. In the present embodiment, the stacking direction D1 of the single cells 220 is the X-axis direction. In the present embodiment, the fuel cell 210 receives supply of hydrogen gas and air and generates power by an electrochemical reaction between hydrogen and oxygen.

  FIG. 3 is an explanatory diagram when the fuel cell unit 100 is viewed from the + side in the Z-axis direction. The converter case 300 is a box-shaped member disposed on the + side of the fuel cell case 200 in the Z-axis direction. A multiphase converter 310 is housed inside the converter case 300.

  Multiphase converter 310 adjusts and outputs the voltage input from fuel cell 210. In the present embodiment, the multiphase converter 310 adjusts the voltage input from the fuel cell 210 to a voltage suitable for motor driving and outputs the voltage. Multiphase converter 310 includes a four-phase converter including a U-phase converter DC1, a V-phase converter DC2, a W-phase converter DC3, and an X-phase converter DC4. The U-phase converter DC1, the V-phase converter DC2, the W-phase converter DC3, and the X-phase converter DC4 are connected in parallel.

  U-phase converter DC1 includes a reactor L1, a current sensor I1, and a power module IPM1.

  Reactor L1 is electrically connected to fuel cell 210. Reactor L1 includes an annular core portion and a coil wound around the outer periphery of the core portion. Reactor L1 is capable of accumulating electric power and discharging the accumulated electric power. The power storing and discharging operations by reactor L1 are used for the voltage step-up and step-down operations by U-phase converter DC1.

  Current sensor I1 is arranged between reactor L1 and power module IPM1. Current sensor I1 detects a current flowing from reactor L1 to power module IPM1.

  FIG. 4 is an explanatory diagram showing a circuit configuration of the fuel cell unit 100. The power module IPM1 is a circuit module incorporating a plurality of semiconductor elements. The power module IPM1 has a switching element SW1 and a diode Di1.

  The switching element SW1 periodically causes the reactor L1 to repeatedly store and release electric power by performing periodic switching control when a voltage is input from the fuel cell 210. The electric power discharged from the reactor L1 is output via the diode Di1. The diode Di1 is a so-called switching diode.

  The U-phase converter DC1 adjusts and outputs the input voltage by adjusting the duty ratio (ratio between the on state and the off state) in the switching element SW1.

  Similarly to U-phase converter DC1, V-phase converter DC2, W-phase converter DC3, and X-phase converter DC4 are respectively associated with reactors L2, L3, L4, current sensors I2, I3, I4, and power modules IPM2, IPM3. , IPM4. Similarly to the power module IPM1, the power modules IPM2, IPM3, and IPM4 include diodes Di2, Di3, and Di4 and switching elements SW2, SW3, and SW4 corresponding to the power modules IPM1, respectively. In the following description, the symbol “L” is used when the reactors are generically referred to, and the symbol “IPM” is used when the reactors are generically designated.

  In this embodiment, the power module IPM is a double-sided cooling type that cools a semiconductor element from both sides. In another embodiment, the power module IPM may be a single-sided cooling type that cools a semiconductor element from one side.

  V-phase converter DC2, W-phase converter DC3 and X-phase converter DC4 adjust and output the voltage input from fuel cell 210 based on the same principle as U-phase converter DC1. The switching elements SW1, SW2, SW3, SW4 adjust the duty ratios of the respective switching elements SW1, SW2, SW3, SW4 so that the respective current values measured by the current sensors I1, I2, I3, I4 are equal. Perform switching control.

  Returning to FIG. 3, the reactor L and the power module IPM are arranged in a direction D <b> 2 that is substantially parallel to the X-axis direction. The single cells 220 in the fuel cell 210 are stacked with the X-axis direction as the stacking direction D1. That is, in this embodiment, the direction in which the reactors L are arranged and the direction in which the power modules IPM are arranged are both directions D2 and are substantially parallel to the stacking direction D1 of the single cells 220. In the present embodiment, the size of the reactor L and the size of the power module IPM are both sizes that greatly affect the design of the fuel cell unit 100.

  In this embodiment, “the direction is substantially parallel” means that the angle in which the two directions to be compared are directed is preferably within a range of 5 degrees, and more preferably a range of 3 degrees. Is within.

  According to the embodiment described above, in the fuel cell unit 100, the direction D2 in which the reactor L and the power module IPM are aligned and the stacking direction D1 in which the single cells are stacked are substantially parallel. For this reason, compared with the form in which the direction in which the reactor and the power module are arranged and the lamination direction in which the single cells are laminated are substantially orthogonal, the change direction of the dimensions of the fuel cell 210 having the plurality of single cells 220, the reactor L, and When designing the fuel cell unit 100 having the output performance corresponding to the vehicle type of the electric vehicle, the direction of change of the dimension of at least one of the power modules IPM is substantially parallel and the direction of change of the dimension is the same. Therefore, it is possible to suppress a significant change in the design of the fuel cell unit 100. That is, the design change of the fuel cell unit 100 caused by adjusting the number of reactors L and power modules IPM and the number of single cells 220 can be prevented from becoming complicated. Further, since the increase / decrease in the output performance corresponds to the increase / decrease in the size of the fuel cell unit 100, the fuel cell unit 100 of a size having a variation corresponding to the increase / decrease in the output performance can be produced in detail.

  For example, when a fuel cell unit having a predetermined output performance is to be redesigned for a small electric vehicle equipped with a fuel cell unit having a smaller output performance, a reactor and It is necessary to reduce the number of power modules and to reduce the size of the fuel cell unit for mounting in a small electric vehicle. However, in the form in which the direction in which the reactors and power modules are arranged and the direction in which the single cells are laminated are substantially orthogonal, the fuel cell unit cannot be downsized only by reducing the number of reactors and power modules. For this reason, in order to reduce the size of the fuel cell unit, the design of the fuel cell unit has to be significantly changed. On the other hand, in the fuel cell unit 100 of the first embodiment, the change direction of the dimensions of the fuel cell 210 having the plurality of single cells 220 is substantially parallel to the change direction of the dimensions of the reactor L and the power module IPM. The direction is the same. For this reason, when designing the fuel cell unit 100 provided with the output performance according to the vehicle type of an electric vehicle, it can suppress changing the design of the fuel cell unit 100 significantly.

  FIG. 5 is an explanatory diagram showing changes when the design of the fuel cell unit 100 is changed. The upper part of FIG. 5 shows the fuel cell unit 100. The lower part of FIG. 5 shows a fuel cell unit 100a that is the fuel cell unit 100 after the design change. In FIG. 5, each component of the polyphase converter 310 is indicated by a reference numeral for the sake of simplicity.

  The fuel cell unit 100 a has lower output performance than the fuel cell unit 100. The design change from the fuel cell unit 100 to the fuel cell unit 100a is performed by reducing the number of reactors L and power modules IPM and the number of single cells 220 from the fuel cell unit 100. In the fuel cell unit 100, the direction D2 in which the reactor L and the power module IPM are aligned and the stacking direction D1 in which the single cells are stacked are substantially parallel. For this reason, compared with the form in which the direction in which the reactor L and the power module IPM are arranged and the stacking direction in which the single cells 220 are stacked are substantially orthogonal to each other, Since the change direction of at least one of the reactor L and the power module IPM is substantially parallel and the change direction of the dimension is the same, it is possible to prevent the design change of the fuel cell unit 100 from becoming complicated.

B. Second embodiment:
FIG. 6 is an explanatory diagram illustrating an outline of the vehicle 20 including the fuel cell unit 100 according to the first embodiment. The vehicle 20 is an electric vehicle driven by a motor. The front of the vehicle 20 faces the + side in the Y-axis direction. The vehicle 20 includes seats 22, 24, 26 and a floor portion 28.

  The seats 22, 24, and 26 are configured so that passengers can sit on them. The seat 22 is located on the + side in the X-axis direction in the vehicle 20. The seat 24 is located on the negative side in the X-axis direction in the vehicle 20. The seat 26 is located on the minus side in the Y-axis direction from the seat 22 and the seat 24. The floor portion 28 is positioned on the − side in the Z-axis direction from the seats 22, 24, and 26, and defines the − side in the Z-axis direction of the vehicle compartment in the vehicle 20.

  A space for mounting the fuel cell unit 100 in the vehicle 20 is an internal region R1 of the vehicle 20 on the negative side in the Z-axis direction from the floor 28.

  In the fuel cell unit 100, the direction D <b> 2 in which the reactor L and the power module IPM are arranged and the lamination direction D <b> 1 in which the single cells 220 are laminated are substantially parallel along the vehicle width direction of the vehicle 20. Therefore, even if the vehicle 20 has a relatively short length in the vehicle width direction in the internal region R1, the fuel cell unit 100 can be mounted on the vehicle 20 by changing the design of the fuel cell unit 100. In other words, it is possible to design the fuel cell unit 100 having a size with variations according to the increase / decrease of the output performance, so that it is easy to cope with variations of the vehicle 20.

C. Third embodiment:
FIG. 7 is an explanatory diagram illustrating an outline of the vehicle 30 including the fuel cell unit 100 according to the first embodiment. The vehicle 30 is an electric vehicle driven by a motor. The front of the vehicle 30 faces the + side in the X-axis direction. A space for mounting the fuel cell unit 100 in the vehicle 30 is an internal region R2 of the vehicle 30 on the negative side in the Z-axis direction from the hood 32 in front of the vehicle 30.

  In the fuel cell unit 100, the direction D2 in which the reactor L and the power module IPM are aligned and the stacking direction D1 in which the single cells 220 are stacked are substantially parallel along the front-rear direction of the vehicle 30. For this reason, even if the vehicle 30 has a relatively short length in the front-rear direction in the internal region R2, the fuel cell unit 100 can be mounted on the vehicle 30 by changing the design of the fuel cell unit 100. In other words, it is possible to design the fuel cell unit 100 having a variation according to the increase / decrease of the output performance, so that it is easy to cope with variations of the vehicle 30.

D. Fourth embodiment:
FIG. 8 is a conceptual diagram showing an arrangement configuration of the fuel cell unit 100b in another embodiment. The fuel cell unit 100b is the same as the configuration of the fuel cell unit 100 in the first embodiment except that the positional relationship between the fuel cell case 200 and the converter case 300 in the Z-axis direction is different. In the fuel cell unit 100b, the fuel cell case 200 is disposed on the + side of the converter case 300 in the Z-axis direction.

E. Fifth embodiment:
FIG. 9 is an explanatory diagram showing changes when the design of the fuel cell unit 100c in another embodiment is changed. The upper part of FIG. 9 shows the fuel cell unit 100c. The lower part of FIG. 9 shows a fuel cell unit 100d that is the fuel cell unit 100c after the design change.

  The fuel cell unit 100c is the same as the fuel cell unit 100 except that in addition to the four-phase converter provided in the fuel cell unit 100, another fuel converter is provided. Another converter included in the fuel cell unit 100c includes a reactor L5 and a power module IPM5. In FIG. 9, for easy understanding, the configuration in the converter case 300 in the fuel cell unit 100 c and the fuel cell unit 100 d shows only the reactor L and the power module IPM. Further, in FIG. 9, the reactor L and the power module IPM are respectively indicated by reference numerals in order to simplify the drawing.

  In fuel cell unit 100c, reactors L1, L2, L3, and L4 and power modules IPM1, IPM2, IPM3, and IPM4 are arranged in a direction D2 that is substantially parallel to the X-axis direction. Reactor L5 is arranged on the + side of reactor L4 in the Y-axis direction. The power module IPM5 is arranged on the negative side of the power module IPM4 in the Y-axis direction.

  The fuel cell unit 100d has lower output performance than the fuel cell unit 100c. When the design of the fuel cell unit 100c is changed to the fuel cell unit 100 with low output performance, the number of reactors L1, L2, L3 and power modules IPM1, IPM2, IPM3 and the number of single cells 220 are reduced from the fuel cell unit 100c. Is done by. That is, since the change direction of the dimensions of the fuel cell 210 and the change direction of the dimensions of the reactor L and the power module IPM are the same, it is possible to suppress the design change of the fuel cell unit 100c from becoming complicated.

F. Variations:
In the first embodiment, the fuel cell case 200 is disposed on the negative side of the converter case 300 in the Z-axis direction, but the present invention is not limited to this. For example, the fuel cell case 200 and the converter case 300 may be arranged adjacent to each other in the Y-axis direction.

  In the first embodiment, the size of the fuel cell case 200 is smaller than the converter case 300, but the present invention is not limited to this. For example, the size of the fuel cell case 200 may be larger than the converter case 300 or the same size.

  In the first embodiment, the direction D2 in which the reactor L and the power module IPM are arranged is substantially parallel to the stacking direction D1 of the single cells 220, but the present invention is not limited to this. For example, if the size of the reactor L is larger than the size of the power module IPM and only the size of the reactor L is a size that greatly affects the design of the fuel cell unit 100, only the direction in which the reactors L are arranged is the stacking direction of the single cells 220. It may be substantially parallel to D1. If the size of the power module IPM is larger than the size of the reactor L and only the size of the power module IPM is a size that greatly affects the design of the fuel cell unit 100, only the direction in which the power modules IPM are arranged is It may be substantially parallel to the stacking direction.

  In the first embodiment, the direction D2 in which the reactor L and the power module IPM are arranged is substantially parallel to the stacking direction D1 of the single cells 220, but the present invention is not limited to this. For example, any of the directions D2 in which the reactor L and the power module IPM are arranged may be parallel to the stacking direction D1 of the single cells 220.

  In the fifth embodiment, one reactor L5 is provided at a position shifted in the Y-axis direction from the reactors L1, L2, L3, and L4 aligned in the direction D2, and the power modules IPM1, IPM2, IPM3, and IPM4 are aligned in the direction D2. Although one power module IPM5 is provided at a position shifted in the Y-axis direction, the present invention is not limited to this. For example, a plurality of reactors are provided at positions shifted in the Y-axis direction from the reactors L1, L2, L3, and L4 aligned in the direction D2, and the power modules IPM1, IPM2, IPM3, and IPM4 aligned in the direction D2 are shifted in the Y-axis direction. A plurality of power modules may be provided at different positions. In such a form, the design change in the fuel cell unit having output performance corresponding to the vehicle type of the electric vehicle is performed by adjusting the number of reactors L and power modules IPM arranged in the direction D2.

  The present invention can also be realized in the following forms, for example.

  A fuel cell body having a plurality of single cells stacked in a certain direction, and a multi-phase having a plurality of converters arranged in parallel with the fuel cell body along a certain direction and boosting the voltage output from the fuel cell body And a step-up converter. The multiphase boost converter includes a plurality of reactors that are electrically connected to the fuel cell main body and connected in parallel to each other, and a plurality of switching elements provided corresponding to the reactors. At least one of the plurality of reactors and the plurality of switching elements is arranged substantially in parallel with a certain direction, and is at the same position as the heads of the plurality of single cells in which the heads of the arranged rows are stacked.

  FIG. 10 is a conceptual diagram showing an arrangement configuration of the fuel cell unit 100e in another embodiment. The fuel cell unit 100e is the same as the fuel cell unit 100 except that the arrangement of the multiphase converter 310 is different.

  In the multiphase converter 310 in the fuel cell unit 100e, in the X-axis direction, the end of the reactor L1 on the + side in the X-axis direction is positioned at the end of the stacked unit cell 220 on the + side in the X-axis direction; It arrange | positions so that it may become a substantially same position. Here, “substantially the same position” means that the end of the reactor L1 on the + side in the X-axis direction and the end of the stacked unit cell 220 on the + side in the X-axis direction are the same position in the X-axis direction. In addition to the above, in the X-axis direction, the end of the reactor L1 on the + side in the X-axis direction is the X-axis direction in the leading single cell 220 on the + side in the X-axis direction among the stacked unit cells 220 It also includes being in a position within the range of the length.

  According to this embodiment, the end of the reactor L and the end of the stacked unit cell 220 are at substantially the same position on the + side in the X-axis direction, and the number of the reactors L on the − side in the X-axis direction. The design of the fuel cell unit 100e is changed by adjusting the number of the single cells 220. For this reason, when designing the fuel cell unit 100e having output performance corresponding to the vehicle type of the electric vehicle, it is possible to reduce the size of the fuel cell unit 100e in the X-axis direction.

  Further, in the fuel cell unit 100e described above, in the X-axis direction, the end of the reactor L1 on the + side in the X-axis direction is substantially the same as the position of the end on the + side in the X-axis direction of the stacked unit cells 220. Although it has been arranged to be in the same position, the present invention is not limited to this. For example, the end on the + side in the X-axis direction of the switching element SW1 or the end on the + side in the X-axis direction of the reactor L1 and the end on the + side in the X-axis direction of the switching element SW1 are stacked. You may arrange | position so that it may become a position substantially the same as the position of the edge part in the X-axis direction in the cell 220 at the + side.

  The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the above-described effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 20 ... Vehicle 22, 24, 26 ... Seat 28 ... Floor part 30 ... Vehicle 32 ... Hood 100 ... Fuel cell unit 200 ... Fuel cell case 210 ... Fuel cell 220 ... Single cell 300 ... Converter case 310 ... Multiphase converter Di1, Di2 , Di3, Di4 ... Diode DC1 ... U-phase converter DC2 ... V-phase converter DC3 ... W-phase converter DC4 ... X-phase converter I1, I2, I3, I4 ... Current sensors IPM1, IPM2, IPM3, IPM4, IPM5 ... Power module L1, L2, L3, L4, L5 ... Reactor SW1, SW2, SW3, SW4 ... Switching element R1, R2 ... Internal region

Claims (5)

A fuel cell having a plurality of single cells stacked in a fixed direction; and a converter having a plurality of combinations of a reactor electrically connected to the fuel cell and a power module electrically connected to the reactor. A fuel cell unit,
A fuel cell unit, wherein at least one of a direction in which the plurality of reactors are arranged and a direction in which the plurality of power modules are arranged is substantially parallel to the stacking direction of the single cells. The fuel cell unit according to claim 1, wherein
The fuel cell is a fuel cell unit that is disposed on the upper side in the gravity direction of the power module or on the lower side in the gravity direction of the power module. The fuel cell unit according to claim 1 or 2, wherein
Both the direction in which the reactors are arranged and the direction in which the power modules are arranged are substantially parallel to the stacking direction of the single cells. A vehicle comprising the fuel cell unit according to any one of claims 1 to 3,
The stacking direction is substantially parallel to a vehicle width direction of the vehicle when the fuel cell unit is mounted on the vehicle. A vehicle comprising the fuel cell unit according to any one of claims 1 to 3,
The vehicle is a vehicle in which the stacking direction is substantially parallel to a front-rear direction of the vehicle when the fuel cell unit is mounted on the vehicle.

Images