JP2022138342A - Power device - Google Patents

Abstract

To provide a power device that suppresses an induction voltage (induction noise) generated in a low voltage circuit.SOLUTION: A power device 10 for receiving an external power or supplying an internal power to the outside comprises: an external connection part 40 connected with the outside to receive the external power or to supply the internal power to the outside; power conversion units 44 which are arranged at higher positions than a position of the external connection part and convert the external power or the internal power; and multiple power storage units 22 which are arranged at positions different from each other in height and receive the external power converted by the power conversion units or supply the internal power to the power conversion units.SELECTED DRAWING: Figure 3

Description

The present invention relates to a power device that receives external power or supplies internal power to the outside.

Patent Literature 1 discloses a battery exchange device for charging a battery. The battery exchange device is provided with a slot for housing a battery, and a wall surface on the back side, which is the bottom of the slot, is provided with a terminal for connecting to a terminal of the battery to charge the battery. The terminal is connected to a charger such as an inverter via a cable.

Further, Patent Document 2 discloses a battery charging device for charging a battery. A battery charging device is provided with a plurality of battery boxes that can accommodate batteries, and a control unit that is arranged above the plurality of battery boxes and controls charging of the batteries accommodated in the battery boxes.

Japanese Patent No. 4479977 Japanese Patent No. 3904740

Such a power device includes a relatively high voltage circuit portion (hereinafter also referred to as a high voltage circuit) and a relatively low voltage circuit portion (hereinafter also referred to as a low voltage circuit). ing. The high-voltage circuit includes high-voltage wiring and high-voltage circuit components for receiving supply of external power or supplying internal power to the outside. The low-voltage circuit includes low-voltage wiring such as a communication line for communicating with each unit in the power device, and low-voltage circuit components.

In this case, if the high-voltage circuit and the low-voltage circuit are close to each other, an induced current flows in the low-voltage circuit due to electromagnetic coupling between the high-voltage circuit and the low-voltage circuit, and an induced voltage (induced noise) is generated. As a result, the low voltage circuit may malfunction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a power device capable of suppressing the generation of induced voltage (induced noise) in a low voltage circuit.

An aspect of the present invention is a power device that receives supply of external power or supplies internal power to the outside, and is connected to the outside to receive the supply of the external power or supply the internal power to the outside. an external connection unit that supplies electric power; a power conversion unit that is arranged at a position higher than the external connection unit and converts the external power or the internal power; and the power conversion unit that is arranged at a position different in height from each other and a plurality of power storage units supplied with the external power converted by or supplying the internal power to the power conversion unit.

According to the present invention, the external connection unit of the high voltage circuit, the power conversion unit that performs power conversion between the high voltage circuit side and the low voltage circuit side, and the plurality of power storage units of the low voltage circuit are included in the electric power device. separated within. As a result, it is possible to suppress the generation of an induced voltage (induced noise) due to an induced current flowing in the low-voltage circuit.

1 is an external perspective view of a power device according to this embodiment; FIG. 2 is a front view of the power device of FIG. 1; FIG. FIG. 3 is a front view showing a state in which the front surface of the housing of FIG. 2 is removed; It is the front view which expanded and illustrated two electrical storage parts. FIG. 5 is a side view of the power storage unit of FIG. 4; 2 is a circuit configuration diagram of the power device of FIG. 1; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of a power device according to the present invention will be described below with reference to the accompanying drawings.

[1. Configuration of this embodiment]
FIG. 1 is an external perspective view of a power device 10 according to this embodiment. FIG. 2 is a front view of the power device 10. FIG.

The power device 10 is a charging device that accommodates a plurality of batteries 12 therein and charges the plurality of batteries 12 . At least one battery 12 among the plurality of batteries 12 is a mobile battery that can be attached to and detached from the power device 10 . In other words, the power device 10 can be used as a battery exchange that deposits a mobile battery with a low remaining capacity (SOC) and receives another fully charged mobile battery. The power device 10 can also be used as a discharge device that outputs (supplies) the power (internal power) stored in the plurality of batteries 12 to the outside.

The power device 10 has a substantially rectangular parallelepiped housing 14 . Eight openings 18 are formed in the front face 16 of the housing 14 . Each opening 18 communicates with a slot 20 in housing 14 . In the present embodiment, as shown in FIGS. 1 to 4, there are four slots 20 in the vertical direction (4 rows) and two slots in the horizontal direction (2 columns), for a total of 8 slots (4 rows and 2 columns) in the power unit. 10. Therefore, the battery 12 is set (held) in the slot 20 by putting the battery 12 in and out of the slot 20 through the opening 18 .

The housing 14 is configured so that the front surface 16 can be removed as shown in FIG. Moreover, in this embodiment, a plurality of slots 20 is sufficient. Further, as shown in FIGS. 1 to 6, the battery 12 set in the slot 20 and the slot 20 supply (store) external power or output (discharge) internal power. Configured. Furthermore, the housing 14 may have a door (not shown) for opening and closing each opening 18 .

An indicator 24 is provided near the plurality of openings 18 on the front surface 16 of the housing 14 . The indicator 24 displays the state of charge of the battery 12 accommodated in the slot 20, the vacant state of the slot 20, and the like by lighting colors, blinking, and the like. One operation panel 26 is provided above the plurality of openings 18 on the front surface 16 of the housing 14 . The operation panel 26 is a device operated by a user. By operating the operation panel 26, the user pays for charging the battery 12, for example.

In the following description, the configuration of the power device 10 will be described based on the X-axis, Y-axis and Z-axis defined as follows. As shown in FIGS. 2 to 4, when the power device 10 is viewed from the front, that is, when the front face 16 of the housing 14 is viewed, the depth direction of the power device 10 is the X-axis direction, and the front face 16 side is the positive direction. side. The width direction of the power device 10 is the Y-axis direction, and the right side when viewed from a position facing the front surface 16 of the housing 14 is the positive side. Further, the vertical direction of the power device 10 is the Z-axis direction, and the upper side is the positive side.

FIG. 3 is a front view illustrating the inside of the power device 10 with the front face 16 of the housing 14 (see FIGS. 1 and 2) removed. A base 28 is installed at the bottom of the housing 14 . A plurality of support columns 30 are erected from the base 28 in the Z-axis direction. Four monocoque cases 32 are attached to the left and right support columns 30 at predetermined intervals in the Z-axis direction. Each monocoque case 32 is formed with two left and right hollow portions 34 opening in the X-axis direction. The two hollow portions 34 are provided with slots 20 extending in the X-axis direction and capable of accommodating the batteries 12 . Above the plurality of monocoque cases 32 , support plates 36 extending in the horizontal direction (X-axis direction and Y-axis direction) are attached to the left and right support columns 30 . Top plates 38 extending in the horizontal direction are attached to the upper ends of the left and right support columns 30 .

An external connection portion 40 as an external connection connector connectable to an external connection line (not shown) is provided on the lower portion of the base 28 . By being connected to the external connection line, the external connection unit 40 receives supply of external power from the outside through the external connection line, or outputs (supplies) internal power to the outside through the external connection line. .

A breaker 42 is attached to the bottom of the top plate 38 . A plurality of inverters 44 (power converters) are arranged on the upper surface of the support plate 36 . Each of the plurality of inverters 44 corresponds to each of the plurality of slots 20 (power storage units 22). Therefore, the same number of inverters 44 as slots 20 are arranged on the support plate 36 . Further, on the support plate 36, a main control board 46, which is an integrated control section for controlling each slot 20, and an inverter 48 for the main control board 46 are further arranged.

Therefore, inside the housing 14, from the bottom to the top, the external connection section 40, the plurality of power storage sections 22 (the battery 12, the slot 20), the plurality of inverters 44 and 48, the main control board 46, and the breaker 42 are arranged in sequence at different height positions.

Inside the housing 14 , the external connection portion 40 and the breaker 42 are electrically connected via a high-voltage power line 50 . In this case, the high-voltage power line 50 extends upward from the external connection portion 40 and is connected to the breaker 42 as described below. That is, the high-voltage power line 50 extends upward from the external connection portion 40 inside the base 28 . The high-voltage power line 50 extends upward from the upper surface of the base 28 so as to avoid the power storage units 22 .

Specifically, the high-voltage power line 50 extends upward along the left support column 30 from the upper surface of the base 28 in the front view (horizontal direction view) of FIGS. 2 and 3 . In this case, the high-voltage side power line 50 extends upward along the left support column 30 at a certain distance from each monocoque case 32 so as to avoid the plurality of monocoque cases 32 (two power storage units 22). . The high-voltage side power line 50 is curved inwardly of the housing 14 at a point in front of the top plate 38 and connected to the breaker 42 so as to avoid the plurality of inverters 44 and 48 .

In this way, the high-voltage power line 50 is located on the left side (one side) of the plurality of power storage units 22 in the front view of FIGS. (one side). By fixing the high-voltage power line 50 to an arbitrary location using the cable fixture 52 , it is possible to avoid approaching the plurality of monocoque cases 32 and the plurality of power storage units 22 . 2 and 3 show, as an example, a case where the high-voltage power line 50 is fixed to the left support column 30 using a cable fixture 52 near the inverter 44 on the left support column 30. FIG.

The breaker 42 and the plurality of inverters 44 , 48 are electrically connected via a high voltage side power line 54 . A high voltage circuit 56 is configured from the external connection portion 40 to the plurality of inverters 44 . High voltage circuitry 56 is the relatively high voltage circuitry portion of power device 10 . The breaker 42 is a high-voltage circuit breaker that, when an excessive voltage exceeding a predetermined threshold occurs in the high-voltage circuit 56, cuts off conduction between the external connection section 40 and the inverters 44, 48. Thus, the power device 10 is protected.

AC power flows through the high voltage circuit 56 . That is, when the power device 10 is supplied with external power, a relatively high voltage is supplied to the plurality of inverters 44 and 48 via the external connection portion 40, the high voltage side power line 50, the breaker 42 and the high voltage side power line 54. AC power is supplied. Each of the inverters 44 and 48 converts AC power into relatively low-voltage DC power and outputs it to the power storage units 22 or the main control board 46 side. When the power device 10 outputs internal power to the outside, the plurality of inverters 44 converts the DC power supplied from the plurality of power storage units 22 into AC power, and the converted AC power is supplied to the high-voltage power line 54, the breaker 42, Output to the outside via the high-voltage power line 50 and the external connection portion 40 .

On the other hand, a portion from the plurality of inverters 44 and 48 to the plurality of power storage units 22 and the main control board 46 constitutes a low voltage circuit 58 . Low voltage circuitry 58 is a relatively low voltage circuitry portion of power device 10 . In low-voltage circuit 58 , multiple inverters 44 and multiple power storage units 22 are electrically connected by low-voltage power lines 60 . The low voltage side power line 60 extends downward from the plurality of inverters 44 so as not to approach the high voltage circuit 56, and is connected to the corresponding power storage unit 22, as described below.

Specifically, the low-voltage power line 60 extends slightly downward from the inverter 44 , bends at the support plate 36 , and extends toward the right support column 30 . The low-voltage power line 60 bends downward at the right support column 30 and extends downward along the Z-axis direction. In this case, the low-voltage side power line 60 extends downward along the right support column 30 at a certain distance from each monocoque case 32 so as to avoid the plurality of monocoque cases 32 (two power storage units 22). .

Furthermore, the low-voltage power line 60 bends near the lower right corner of the monocoque case 32 in which the power storage unit 22 corresponding to the connected inverter 44 is arranged, and extends leftward under the monocoque case 32 . ing. Then, low-voltage power line 60 is connected to power storage unit 22 by bending at a portion below corresponding power storage unit 22 and extending upward.

Also, the right inverter 48 is connected to the main control board 46 and the plurality of power storage units 22 via the low-voltage power line 62 . In this case, the low-voltage power line 62 extending from the right inverter 48 to the plurality of power storage units 22 extends to the power storage unit 22 along the same path as the low-voltage power line 60 extending from the eight inverters 44 to the power storage units 22, and is connected. It is

Furthermore, the main control board 46 and the plurality of power storage units 22 are connected via communication lines 64 . In this case, the communication line 64 extends to and is connected to the power storage unit 22 along the same route as the low-voltage side power line 60 extending from each inverter 44 to the power storage unit 22 .

In this manner, the plurality of low-voltage power lines 60 and 62 and the plurality of communication lines 64 are arranged on the right side (the other side) of the plurality of power storage units 22, that is, in the monocoque case 32 when viewed from the front in FIGS. It is arranged on the right side (the other side) of the two left and right power storage units 22 . Also, a plurality of low-voltage power lines 60 and 62 and a plurality of communication lines 64 are arranged downward on the right side of the plurality of power storage units 22 . Therefore, it is desirable that the plurality of low-voltage power lines 60 and 62 and the plurality of communication lines 64 be bundled together like a wire harness 66, for example.

FIG. 4 is an enlarged front view of two left and right power storage units 22 arranged in one monocoque case 32 . FIG. 5 is a side view of power storage unit 22. As shown in FIG. FIG. 6 is a circuit configuration diagram of the power device 10. As shown in FIG. 6, the high voltage circuit 56 is indicated by thick lines, and the low voltage circuit 58 is indicated by thin lines. Further, in the description of FIG. 6, detailed description of the components of the power device 10 that has already been described will be omitted.

In FIG. 4 , of the two power storage units 22 , the power storage unit 22 on the left (one side) that is closer to the high-voltage power line 50 avoids the proximity of the high-voltage power line 50 to the low-voltage power lines 60 and 62 and the communication line 64 . Therefore, it is connected to the low-voltage side power lines 60 and 62 and the communication line 64 on the right side of the intermediate position 68 of the power storage unit 22 . Specifically, when the width (length) of the power storage unit 22 in the Y-axis direction is represented by Lyb, the closest distance Lyc in the Y-axis direction between the high-voltage power line 50 and the low-voltage power lines 60 and 62 and the communication line 64 is The closest distance Lyc is set to be longer than half the width Lyb (Lyc>Lyb/2). That is, the distance in the Y-axis direction between the high-voltage power line 50 and the low-voltage power lines 60 and 62 and the communication line 64 should be equal to or greater than the closest distance Lyc. It should be noted that a distance equal to or greater than the closest distance Lyc may be ensured for a portion of the high-voltage power line 50 near the external connection portion 40 as well.

As shown in FIGS. 5 and 6, each of the plurality of power storage units 22 includes a slot-side substrate 70 as a power storage control unit arranged on the far side (negative side in the X-axis direction) of the slot 20, a DC/DC converter 72 and fan 74 .

As shown in FIG. 5 , low-voltage power lines 60 extending from the plurality of inverters 44 , low-voltage power lines 62 extending from the inverters 48 , and communication lines 64 extend below the power storage unit 22 toward the negative side in the X-axis direction. By extending upward in the vicinity of the inner side of the , it enters into the power storage unit 22 . In this case, the low voltage side power line 60 extending from the plurality of inverters 44 is electrically connected to the DC/DC converter 72 . The DC/DC converter 72 is connected via a cable 75 to a connector 76 arranged on the far side of the slot 20 . The connector 76 is connected to a connector 78 on the battery 12 side.

Also, the low-voltage side power line 62 and the communication line 64 extending from the inverter 48 are electrically connected to the slot side substrate 70 . The slot-side board 70 is connected to the DC/DC converter 72 , the fan 74 and the indicator 24 via cables 80 . Also, the slot side substrate 70 is connected to the battery 12 via a cable 82 and connectors 76 and 78 .

In this case, the main control board 46 and the slot side board 70 are driven by being supplied with DC power from the inverter 48 via the low voltage side power line 62 . The main control board 46 also transmits and receives signals to and from the slot side board 70 via the communication line 64 . Specifically, the main control board 46 transmits control signals for controlling the power storage units 22 to the slot side substrates 70 of the plurality of power storage units 22 via the communication lines 64 .

Each slot side board 70 controls the DC/DC converter 72 based on the control signal received via the communication line 64 . As a result, the DC power from the inverter 44 is converted into desired DC power by the DC/DC converter 72 , and the converted DC power is supplied to the battery 12 via the cable 75 and connectors 76 and 78 . As a result, the battery 12 is charged. By converting the DC power from the battery 12 into desired DC power by the DC/DC converter 72 , the converted DC power is supplied to the inverter 44 via the low voltage side power line 60 . As a result, internal power can be output (discharged) from the battery 12 .

Further, each slot-side substrate 70 cools the battery 12 by driving the fan 74 based on the control signal. Further, each slot-side substrate 70 acquires information (battery voltage, battery temperature, SOC) of the battery 12 from the battery 12 via connectors 76 and 78 and cable 82 . Furthermore, the slot-side substrate 70 causes the indicator 24 to perform necessary indications. The slot-side board 70 transmits information acquired from the battery 12 , control results in the power storage section 22 , and the like to the main control board 46 via the communication line 64 .

2 and 3, the high-voltage power line 50, the low-voltage power lines 60 and 62, and the communication power lines 60 and 62 when the plurality of power storage units 22 and the two left and right power storage units 22 are viewed from the front in FIGS. The placement of line 64 has been described. In the present embodiment, when the power device 10 is viewed from the horizontal direction, that is, when viewed from the front, the rear, or the side, the plurality of power storage units 22 and the two power storage units 22 arranged side by side in the horizontal direction On the other hand, the high voltage side power line 50 is arranged on one side, and the low voltage side power lines 60 and 62 and the communication line 64 are arranged on the other side.

Therefore, this embodiment is not limited to the case where the high-voltage power line 50, the low-voltage power lines 60 and 62, and the communication line 64 are arranged on the left and right sides as shown in FIGS. The high-voltage power line 50 may be arranged in front of the plurality of power storage units 22 , and the low-voltage power lines 60 and 62 and the communication line 64 may be arranged behind the plurality of power storage units 22 . Also, in plan view, the high-voltage side power line 50, the low-voltage side power lines 60 and 62, and the communication line 64 may be arranged in the vicinity of diagonal positions of the plurality of power storage units 22 (monocoque case 32). In any case, when viewed in the horizontal direction, the high-voltage power line 50 is separated from the low-voltage power lines 60 and 62 and the communication line 64, and the plurality of power storage units 22 and the two power storage units arranged horizontally are separated. The high-voltage power line 50 is arranged on one side of the unit 22, and the low-voltage power lines 60 and 62 and the communication line 64 are arranged on the other side.

Also, in the above description, the case where the plurality of inverters 44 are power converters has been described. In this embodiment, when the power device 10 receives DC power (external power) from the outside or outputs DC power (internal power) to the outside, instead of the plurality of inverters 44, a high-voltage circuit A plurality of DC/DC converters may be interposed between 56 and low voltage circuit 58, and the plurality of DC/DC converters may function as power converters.

[2. Effect of this embodiment]
As described above, the power device 10 according to the present embodiment is a power device 10 that receives supply of external power or supplies internal power to the outside. An external connection part 40 that receives power or supplies internal power to the outside, and an inverter 44 (power conversion part) that is arranged at a position higher than the external connection part 40 and converts power, and positions at different heights and a plurality of power storage units 22 which are arranged in the inverter 44 and supplied with the external power converted by the inverter 44 or supply the inverter 44 with the internal power.

Thus, the external connection portion 40 of the high voltage circuit 56, the inverter 44 that performs power conversion between the high voltage circuit 56 side and the low voltage circuit 58 side, and the plurality of power storage units 22 of the low voltage circuit 58 are connected. , are arranged separately within the power unit 10 . As a result, it is possible to suppress the generation of an induced voltage (induced noise) due to an induced current flowing through the low-voltage circuit 58 .

Further, by clearly dividing the high-voltage circuit 56 and the low-voltage circuit 58 as described above, maintenance of the electric power device 10 becomes easier, and a layout that takes into account measures against flooding and electric shock can be realized. .

In this case, external connection unit 40 is arranged at a position lower than power storage units 22 , and inverters 44 are arranged at positions higher than power storage units 22 . Thereby, the high voltage circuit 56 and the low voltage circuit 58 are more clearly separated, and maintenance becomes easier.

Power device 10 further includes high-voltage power lines 50 that connect external connection portion 40 and multiple inverters 44 , and low-voltage power lines 60 that connect multiple inverters 44 and multiple power storage units 22 . In this case, the plurality of power storage units 22 are arranged side by side in the Z-axis direction (vertical direction), the high-voltage power line 50 is arranged on one side of the plurality of power storage units 22 when viewed in the horizontal direction, and the low-voltage power line 60 are arranged on the other side of the plurality of power storage units 22 when viewed in the horizontal direction. As a result, the high-voltage power line 50 and the low-voltage power line 60 can be easily separated from each other, so that the generation of induced voltage (induced noise) in the low-voltage circuit 58 can be effectively suppressed.

In addition, the plurality of power storage units 22 have two power storage units 22 arranged at the same height position, and the high voltage side power line 50 is arranged on one side of the two power storage units 22 when viewed in the horizontal direction, The low-voltage power line 60 is arranged on the other side of the two power storage units 22 when viewed in the horizontal direction. As a result, the distance between the high-voltage power line 50 and the low-voltage power line 60 can be increased, so that the generation of induced voltage (induced noise) in the low-voltage circuit 58 can be further suppressed.

Here, the power storage unit 22 on one side of the two power storage units 22 is connected to the low-voltage power line 60 on the other side of the middle position 68 of the power storage unit 22 on the one side. As a result, when the low-voltage power line 60 is connected to the power storage unit 22 on one side that is close to the high-voltage power line 50, the high-voltage power line 50 and the low-voltage power line 60 are arranged with a certain gap therebetween. Generation of voltage (induction noise) can be easily suppressed.

The high-voltage power line 50 and the low-voltage power line 60 are arranged such that the closest distance Lyc between the high-voltage power line 50 and the low-voltage power line 60 is longer than half the horizontal width (length) Lyb of the power storage unit 22. (Lyc>Lyb/2). As a result, the generation of induced voltage (induced noise) can be further suppressed.

The power device 10 also includes a plurality of slot-side substrates 70 (power storage control units) provided near the plurality of power storage units 22 and controlling the plurality of power storage units 22, and a main control unit controlling the plurality of slot-side substrates 70. It further includes a substrate 46 (integrated control section). Accordingly, it is possible to appropriately control the plurality of power storage units 22 while suppressing the generation of the induced voltage (induced noise) in the low voltage circuit 58 .

The power device 10 further includes communication lines 64 that connect the main control board 46 and the plurality of slot side boards 70 . In this case, the main control board 46 is arranged at a position higher than the plurality of power storage units 22, and the communication line 64 is arranged on the right side (the other side) of the plurality of power storage units 22 as viewed in the horizontal direction. As a result, signals can be transmitted and received between the main control board 46 and the plurality of slot side boards 70 while suppressing the generation of induced voltage (induced noise) in the communication line 64 .

In this case, the communication line 64 is arranged near the low-voltage power line 60 . This makes it possible to easily realize a layout that suppresses the generation of induced voltage (induced noise).

Also, the communication line 64 and the low-voltage power line 60 are arranged in a bundle. As a result, it is possible to effectively utilize the space in the power device 10 while suppressing the generation of the induced voltage (induced noise).

The power device 10 further includes a housing 14 that accommodates the external connection unit 40 , the inverter 44 , the plurality of power storage units 22 , the high-voltage power line 50 and the low-voltage power line 60 . The housing 14 is configured such that a front surface 16 (either side surface) facing in the horizontal direction is detachable. In this case, the high-voltage power line 50 is arranged on one side of the plurality of power storage units 22 when viewed in a direction orthogonal to the front surface 16 (front view), and the low-voltage power line 60 is arranged on one side of the plurality of power storage units 22 when viewed from the front. placed on the other side. As a result, when the front surface 16 is removed from the housing 14 during maintenance, the operator can easily see both the high-voltage power line 50 and the low-voltage power line 60 . As a result, the maintainability of the power device 10 is further improved.

It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications are possible.

DESCRIPTION OF SYMBOLS 10... Electric power apparatus 22... Electric storage part 40... External connection part 44... Inverter (power conversion part)

Claims (11)

A power device that receives external power or supplies internal power to the outside,
an external connection unit that receives the supply of the external power or supplies the internal power to the outside by being connected to the outside;
a power conversion unit arranged at a position higher than the external connection unit and converting the external power or the internal power;
a plurality of power storage units arranged at different height positions and supplied with the external power converted by the power conversion unit, or supplying the internal power to the power conversion unit;
A power device comprising: The power device according to claim 1,
the external connection unit is arranged at a position lower than the plurality of power storage units,
The electric power device, wherein the power conversion unit is arranged at a position higher than the plurality of power storage units. The power device according to claim 2,
a high-voltage side power line connecting the external connection unit and the power conversion unit;
a low-voltage side power line connecting the power conversion unit and the power storage unit;
further comprising
The plurality of power storage units are arranged in a vertical direction,
The high-voltage power line is arranged on one side of the plurality of power storage units when viewed in a horizontal direction,
The power device, wherein the low-voltage power line is arranged on the other side of the plurality of power storage units when viewed in a horizontal direction. The power device according to claim 3,
The plurality of power storage units have two power storage units arranged at the same height,
The high-voltage power line is arranged on one side of the two power storage units when viewed in the horizontal direction,
The power device, wherein the low-voltage power line is arranged on the other side of the two power storage units when viewed in the horizontal direction. The power device according to claim 4,
The electric power device, wherein, of the two electric storage units, the electric storage unit on the one side is connected to the low-voltage power line on the other side of a middle position of the electric storage unit on the one side. In the power device according to any one of claims 3 to 5,
The high-voltage power line and the low-voltage power line are arranged such that the closest distance between the high-voltage power line and the low-voltage power line is longer than half of the horizontal length of the power storage unit. . In the power device according to any one of claims 3 to 6,
a plurality of power storage control units provided in the vicinity of the plurality of power storage units and controlling the plurality of power storage units;
an integrated control unit that controls the plurality of power storage control units;
A power device, further comprising: The power device according to claim 7,
further comprising a communication line connecting the integrated control unit and the plurality of power storage control units,
The integrated control unit is arranged at a position higher than the plurality of power storage units,
The power device, wherein the communication line is arranged on the other side of the plurality of power storage units when viewed in a horizontal direction. The power device according to claim 8,
The power device, wherein the communication line is arranged in the vicinity of the low voltage side power line. The power device according to claim 9,
The power device, wherein the communication line and the low-voltage power line are arranged in a bundle. In the power device according to any one of claims 3 to 10,
further comprising a housing that accommodates the external connection unit, the power conversion unit, the plurality of power storage units, the high-voltage power line, and the low-voltage power line;
The housing is configured such that one of the side faces facing the horizontal direction is detachable,
The high-voltage power line is arranged on the one side of the plurality of power storage units when viewed in a direction perpendicular to the side surface,
The power device, wherein the low-voltage power line is arranged on the other side of the plurality of power storage units when viewed in a direction orthogonal to the side surface.

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