Power Supply System

Abstract

To provide a power transmission device and a power supply system in which structure of a wire that is connected to the power transmission device is simplified.SOLUTION: A power transmission device 14 for transmitting power from a PCU (power source device) 22 to a driving module 16, includes a power source-side positive electrode terminal and a power source-side negative electrode terminal that are connected to the PCU 22 and receive DC power, and a load-side positive electrode terminal 60a and a load-side negative electrode terminal 60b that are connected to the driving module 16 and output DC power. The load-side positive electrode terminals 60a and the load-side negative electrode terminals 60b are arranged side by side in the order of the load-side positive electrode terminal 60a, the load-side negative electrode terminal 60b, the load-side negative electrode terminal 60b, and the load-side positive electrode terminal 60a.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a power transmission device and a power supply system. [Background technology]

[0002] The following Patent Document 1 discloses an aircraft having a first DC power distribution bus that supplies power from a first generator to a first load device, and a second DC power distribution bus that supplies power from a second generator to a second load device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 217007 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology of Patent Document 1, the first DC distribution bus and the second DC distribution bus are connected via a contactor. It is conceivable to configure the first DC distribution bus as one power transmission device and the second DC distribution bus as another power transmission device. In this case, the power transmission device in which the first DC distribution bus is formed and the second DC distribution bus are connected via a contactor. Distribution It is necessary to connect the power transmission device in which the first DC distribution bus is formed and the power transmission device in which the second DC distribution bus is formed by wiring. Distribution It is desirable to simplify the structure of the wiring connecting to the power transmission device on which the power bus is formed.

[0005] The present invention aims to solve the above-mentioned problems. [Means for solving the problem]

[0006] A first aspect of the present invention is a power transmission device that transmits power from a power supply device to a load device, the power transmission device comprising: an input terminal connected to the power supply device and into which DC power is input; and an output terminal connected to the load device and from which DC power is output, the output terminal having two positive terminals and two negative terminals, the positive terminals and the negative terminals being arranged in a line in the order of the positive terminal, the negative terminal, the negative terminal, and the positive terminal, or the negative terminal, the positive terminal, the positive terminal, and the negative terminal.

[0007] A second aspect of the present invention is a power supply system having two power transmission devices of the first aspect, wherein the power supply system has two of the power supply devices, and the two power transmission devices are arranged facing each other between the two power supply devices. [Effects of the Invention]

[0008] According to the present invention, the wiring structure between the power transmission device and the load device can be simplified. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a power supply system. [Figure 2] FIG. 2 is a schematic diagram of the power transmission device. [Figure 3] FIG. 3 is a schematic diagram of a power transmission device. [Figure 4] FIG. 4 is a diagram showing a power transmitting device disposed inside the aircraft. [Figure 5] FIG. 5 is a diagram showing a power transmitting device disposed inside the aircraft. [Figure 6] FIG. 6 is a diagram showing a power transmitting device of a comparative example that is arranged inside the fuselage of an aircraft. [Figure 7] FIG. 7 is a diagram showing a power transmitting device of a comparative example that is arranged inside the fuselage of an aircraft. [Figure 8] FIG. 8 is a diagram showing a power transmitting device disposed inside the aircraft. [Figure 9]FIG. 9 is a diagram showing a power transmitting device disposed inside the aircraft. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] [Power supply system configuration] FIG. 1 is a schematic diagram showing the configuration of a power supply system 10. This power supply system 10 is mounted on an aircraft. The aircraft is an electric vertical take-off and landing aircraft (eVTOL aircraft). The aircraft has multiple rotors that generate thrust. The rotors are driven by electric motors 26. The aircraft is also a hybrid aircraft. The aircraft has a generator 20 and a battery 30 as power sources for the electric motors 26. In the aircraft, power generated by the generator 20 is supplied to the electric motors 26. When the power generated by the generator 20 is insufficient to meet the required power, power stored in the battery 30 is supplied to the electric motors 26.

[0011] The power supply system 10 has two power generation units 12 and two power transmission devices 14. The two power transmission devices 14 refer to a first power transmission device 14a and a second power transmission device 14b. The two power generation units 12 refer to a first power generation unit 12a and a second power generation unit 12b. Each power transmission device 14 supplies power from each power generation unit 12 to each of two drive modules 16. The two drive modules 16 refer to a first drive module 16a and a second drive module 16b. Each drive module 16 is supplied with power stored in a respective battery 30, in addition to the power generated in each power generation unit 12. A capacitor may be used instead of the battery 30. The drive module 16 corresponds to a load device in the present invention.

[0012] Each power generation unit 12 has a gas turbine 18, a generator 20, and a power control unit (hereinafter referred to as PCU) 22. The gas turbine 18 drives the generator 20, which then generates electricity. The PCU 22 converts AC power generated by the generator 20 into DC power and outputs the DC power to the power transmission device 14. In other words, the PCU 22 functions as an AC / DC converter. The PCU 22 corresponds to the power supply device of the present invention.

[0013] When starting the gas turbine 18, the PCU 22 converts the DC power supplied from the power transmission device 14 into AC power and outputs it to the generator 20. The generator 20 operates using the power input from the PCU 22, and the generator 20 drives the gas turbine 18.

[0014] Each drive module 16 has two drive units 24. Each drive unit 24 has an electric motor 26 and an inverter 28. The electric motor 26 is a three-phase AC motor. A rotor is connected to the output shaft of the electric motor 26. The inverter 28 converts the DC power supplied from each power transmission device 14 into three-phase AC power and outputs it to the electric motor 26.

[0015] A battery 30 is connected to each drive module 16. A circuit breaker 32 is provided between each battery 30 and each drive module 16. Each circuit breaker 32 has a contactor 32a, a contactor 32b, and a pre-charge circuit 32c. The contactor 32a is provided on the positive wiring connecting each battery 30 and each drive module 16. The contactor 32b is provided on the negative wiring connecting each battery 30 and each drive module 16. The pre-charge circuit 32c is provided in parallel with the contactor 32b. The pre-charge circuit 32c has a contactor 32d and a resistor 32e. A current sensor 34 is provided on the wiring connecting each contactor 32b and each drive module 16.

[0016] Each interrupting device 32 switches between a conductive state and a cut-off state between each battery 30 and each drive module 16. The conductive state is a state in which the flow of current is not cut off and current flows. The cut-off state is a state in which the flow of current is cut off.

[0017] Each interrupting device 32 may include only the contactor 32b and the precharge circuit 32c. The precharge circuit 32c may be provided in parallel with the contactor 32a. In this case, each interrupting device 32 may include only the contactor 32a and the precharge circuit 32c.

[0018] Each power transmission device 14 has a power transmission line 36. Each power transmission line 36 supplies power from each power generating unit 12 to each drive module 16.

[0019] Each power transmission device 14 has a circuit breaker 38. Each circuit breaker 38 is provided between the first power generation unit 12a and each power transmission line 36. Each circuit breaker 38 has a contactor 38a and a contactor 38b. Each contactor 38a is provided on a positive wiring connecting the first power generation unit 12a and each power transmission line 36. Each contactor 38b is provided on a negative wiring connecting the first power generation unit 12a and each power transmission line 36. A current sensor 40 is provided between each contactor 38a and each power transmission line 36.

[0020] Each of the breaker devices 38 switches between a conductive state and a cutoff state between the first power generating unit 12a and each of the power transmission lines 36.

[0021] Each power transmission device 14 has a circuit breaker 42. Each circuit breaker 42 is provided between the first drive module 16a and each power transmission line 36. Each circuit breaker 42 has a contactor 42a and a contactor 42b. Each contactor 42a is provided on the positive wiring connecting the first drive module 16a and each power transmission line 36. Each contactor 42b is provided on the negative wiring connecting the first drive module 16a and each power transmission line 36. A current sensor 44 is provided between each contactor 42a and each power transmission line 36.

[0022] Each of the breaker devices 42 switches between a conductive state and a cutoff state between the first drive module 16a and each of the power transmission lines 36.

[0023] Each power transmission device 14 has a circuit breaker 46. Each circuit breaker 46 is provided between the second power generation unit 12b and each power transmission line 36. Each circuit breaker 46 has a contactor 46a and a contactor 46b. Each contactor 46a is provided on a positive wiring connecting the second power generation unit 12b and each power transmission line 36. Each contactor 46b is provided on a negative wiring connecting the second power generation unit 12b and each power transmission line 36. A current sensor 48 is provided between each contactor 46a and each power transmission line 36.

[0024] Each of the breakers 46 switches between a conductive state and a cutoff state between the second power generation unit 12b and each of the power transmission lines 36.

[0025] Each power transmission device 14 has a circuit breaker 50. Each circuit breaker 50 is provided between the second drive module 16b and each power transmission line 36. Each circuit breaker 50 has a contactor 50a and a contactor 50b. Each contactor 50a is provided on the positive wiring connecting the second drive module 16b and each power transmission line 36. Each contactor 50b is provided on the negative wiring connecting the second drive module 16b and each power transmission line 36. A current sensor 52 is provided between each contactor 50a and each power transmission line 36.

[0026] Each of the circuit breakers 50 switches between a conductive state and a cut-off state between the second drive module 16b and each of the power transmission lines 36.

[0027] A diode 54 is provided between each battery 30 and each power transmission device 14. Each diode 54 is provided on the positive wiring connecting each battery 30 and each power transmission device 14. The anode of each diode 54 is connected to the corresponding power transmission device 14 side, and the cathode is connected to the corresponding battery 30 side. Each diode 54 allows the supply of power from each power transmission line 36 to each battery 30. Each diode 54 prevents the supply of power from each battery 30 to each power transmission line 36.

[0028] As a result, power is supplied from each power generation unit 12 to each battery 30 via each diode 54. As a result, each battery 30 is charged. Furthermore, if each power transmission line 36 is short-circuited, power from each battery 30 is prevented from flowing to each power transmission line 36. As a result, even if each power transmission line 36 is short-circuited, power can be supplied from each battery 30 to each drive module 16.

[0029] A transistor 56 is provided in parallel with each diode 54. When the transistor 56 is on, power is supplied from each battery 30 to each power line 36, bypassing the diode 54.

[0030] The power supply system 10 supplies power from the first power generation unit 12a and the second power generation unit 12b to the first drive module 16a and the second drive module 16b using one of the first power transmission device 14a and the second power transmission device 14b. If an abnormality occurs in one of the first power transmission device 14a and the second power transmission device 14b, power can be supplied from the first power generation unit 12a and the second power generation unit 12b to the first drive module 16a and the second drive module 16b using the other of the first power transmission device 14a and the second power transmission device 14b.

[0031] [Terminal arrangement of power transmission device] As shown in FIG. 1, each power transmission device 14 has one power supply positive terminal 58a and one power supply negative terminal 58b. Each power transmission device 14 has two load side positive terminals 60a and two load side negative terminals 60b. The power supply positive terminal 58a and the power supply negative terminal 58b correspond to input terminals of the present invention. The power supply positive terminal 58a corresponds to a positive terminal. The power supply negative terminal 58b corresponds to a negative terminal. The load side positive terminal 60a and the load side negative terminal 60b correspond to output terminals of the present invention. The load side positive terminal 60a corresponds to a positive terminal of the present invention. The load side negative terminal 60b corresponds to a negative terminal of the present invention.

[0032] The PCU 22 of the first power generation unit 12a is connected to the power supply positive terminal 58a and the power supply negative terminal 58b of the first power transmission device 14a, and the PCU 22 of the second power generation unit 12b is connected to the power supply positive terminal 58a and the power supply negative terminal 58b of the second power transmission device 14b.

[0033] The positive wiring 62a on which the contactor 38a is provided in the first power transmission device 14a and the positive wiring 62a on which the contactor 38a is provided in the second power transmission device 14b are connected via a positive connecting wiring 64a. The negative wiring 62b on which the contactor 38b is provided in the first power transmission device 14a and the negative wiring 62b on which the contactor 38b is provided in the second power transmission device 14b are connected via a negative connecting wiring 64b.

[0034] The positive wiring 66a on which the contactor 46a is provided in the first power transmission device 14a is connected to the positive wiring 66a on which the contactor 46a is provided in the second power transmission device 14b via a positive connecting wiring 68a. The negative wiring 66b on which the contactor 46b is provided in the first power transmission device 14a is connected to the negative wiring 66b on which the contactor 46b is provided in the second power transmission device 14b via a negative connecting wiring 68b.

[0035] One load-side positive terminal 60a of the first power transmission device 14a and one load-side positive terminal 60a of the second power transmission device 14b are connected by a positive electrode connecting wire 70a. One load-side negative terminal 60b of the first power transmission device 14a and one load-side negative terminal 60b of the second power transmission device 14b are connected by a negative electrode connecting wire 70b. The first drive module 16a is connected to the first power transmission device 14a and the second power transmission device 14b via the positive electrode connecting wire 70a and the negative electrode connecting wire 70b.

[0036] The other load-side positive terminal 60a of the first power transmission device 14a and the other load-side positive terminal 60a of the second power transmission device 14b are connected by a positive electrode connecting wire 72a. The other load-side negative terminal 60b of the first power transmission device 14a and the other load-side negative terminal 60b of the second power transmission device 14b are connected by a negative electrode connecting wire 72b. The second drive module 16b is connected to the first power transmission device 14a and the second power transmission device 14b via the positive electrode connecting wire 72a and the negative electrode connecting wire 72b.

[0037] 2 and 3 are schematic diagrams of the power transmission device 14. The first power transmission device 14a and the second power transmission device 14b are members having the same shape.

[0038] The power transmission device 14 has an outer shape of a substantially rectangular parallelepiped. As shown in Fig. 2, a power supply positive terminal 58a and a power supply negative terminal 58b are provided on the bottom surface of the power transmission device 14.

[0039] As shown in FIG. 3 , two load-side positive terminals 60a and two load-side negative terminals 60b are provided on the top surface of the power transmission device 14. The two load-side positive terminals 60a and the two load-side negative terminals 60b are arranged in a row in the order of the load-side positive terminal 60a, the load-side negative terminal 60b, the load-side negative terminal 60b, and the load-side positive terminal 60a. The two load-side positive terminals 60a and the two load-side negative terminals 60b may also be arranged in a row in the order of the load-side negative terminal 60b, the load-side positive terminal 60a, the load-side positive terminal 60a, and the load-side negative terminal 60b. This ensures that the arrangement of the load-side positive terminals 60a and the load-side negative terminals 60b remains unchanged even when the power transmission device 14 is rotated 180 degrees about a rotation axis extending in the vertical direction.

[0040] 4 and 5 are diagrams showing the power transmission device 14 arranged inside the fuselage 74 of an aircraft. Fig. 4 is a diagram showing the power transmission device 14 as seen from below. Fig. 5 is a diagram showing the power transmission device 14 as seen from above.

[0041] The first power transmission device 14a and the second power transmission device 14b are disposed between the PCU 22 of the first power generation unit 12a and the PCU 22 of the second power generation unit 12b. The second power transmission device 14b is disposed in a state rotated 180 degrees with respect to the first power transmission device 14a, and the first power transmission device 14a and the second power transmission device 14b are disposed facing each other with the same side facing each other.

[0042] The PCU 22 of the second power generating unit 12b is disposed rotated 180 degrees relative to the PCU 22 of the first power generating unit 12a, thereby maintaining the positional relationship between the terminals of the PCU 22 of the first power generating unit 12a and the terminals of the first power transmitting device 14a and the terminals of the PCU 22 of the second power generating unit 12b and the terminals of the second power transmitting device 14b.

[0043] The first power transmission device 14a and the second power transmission device 14b are arranged on either side of a center line A in the width direction of the body 74. The distance between the center line A and the first power transmission device 14a and the distance between the center line A and the second power transmission device 14b are BetweenThe distances are approximately equal. The first power transmission device 14a is disposed at a position closer to the center line A than the PCU 22 of the first power generation unit 12a. In other words, the PCU 22 of the first power generation unit 12a is disposed at a position closer to the wall 74a of the body 74 than the first power transmission device 14a. The second power transmission device 14b is disposed at a position closer to the center line A than the PCU 22 of the second power generation unit 12b. In other words, the PCU 22 of the second power generation unit 12b is disposed at a position closer to the wall 74a of the body 74 than the second power transmission device 14b. This allows the weight distribution of the PCU 22 and the power transmission devices 14 to be approximately equal in the left-right direction of the body 74.

[0044] [Action and effect] 6 and 7 are diagrams showing a power transmission device 14 of a comparative example arranged inside a fuselage 74 of an aircraft.

[0045] In the comparative example of the power transmission device 14, the two load side positive terminals 60a and the two load side negative terminals 60b are arranged in a row in the order of the load side positive terminal 60a, the load side negative terminal 60b, the load side positive terminal 60a, and the load side negative terminal 60b.

[0046] Therefore, when the second power transmission device 14b is disposed in a state rotated 180 degrees relative to the first power transmission device 14a, the positive electrode connecting wiring 70a and the negative electrode connecting wiring 70b intersect, and the positive electrode connecting wiring 72a and the negative electrode connecting wiring 72b intersect, as shown in Fig. 6. This results in a complicated wiring structure connecting the first power transmission device 14a and the second power transmission device 14b. As a result, the lengths of the positive electrode connecting wiring 70a, the negative electrode connecting wiring 70b, the positive electrode connecting wiring 72a, and the negative electrode connecting wiring 72b are increased, resulting in a problem of increased weight.

[0047] In order to prevent the wiring connecting the first power transmission device 14a and the second power transmission device 14b from crossing each other, it is possible to arrange the second power transmission device 14b and the PCU 22 of the second power generation unit 12b as shown in FIG. 7.

[0048] In this case, the distance between the center line A and the first power transmission device 14a and the distance between the center line A and the second power transmission device 14b are BetweenThe first power transmission device 14a is connected to the PCU of the first power generation unit 12a. 22 The second power transmission device 14b is disposed at a position farther from the center line A than the PCU 22 of the second power generation unit 12b. On the other hand, the second power transmission device 14b is disposed at a position closer to the center line A than the PCU 22 of the second power generation unit 12b. Since the PCU 22 is heavier than each power transmission device 14, the weight distribution of the PCU 22 and the power transmission devices 14 becomes uneven in the left-right direction of the body 74.

[0049] In the power transmission device 14 of this embodiment, the two load-side positive terminals 60a and the two load-side negative terminals 60b are arranged in a row in the following order: load-side positive terminal 60a, load-side negative terminal 60b, load-side negative terminal 60b, and load-side positive terminal 60a. This ensures that the arrangement of the load-side positive terminals 60a and the load-side negative terminals 60b remains unchanged even when the power transmission device 14 is rotated 180 degrees about a rotation axis extending vertically (FIG. 3). Therefore, the wiring connecting the first power transmission device 14a and the second power transmission device 14b does not cross each other, simplifying the wiring structure connecting the first power transmission device 14a and the second power transmission device 14b (FIG. 5). As a result, the weight of the wiring connecting the first power transmission device 14a and the second power transmission device 14b can be reduced. Furthermore, the weight distribution of the PCU 22 and the power transmission device 14 can be made substantially uniform in the left-right direction of the body 74.

[0050] In the power supply system 10 of the present embodiment, the first power transmission device 14a and the second power transmission device 14b are disposed facing each other between the two PCUs 22. This simplifies the wiring structure connecting the first power transmission device 14a and the second power transmission device 14b (FIG. 5).

[0051] Second Embodiment 8 and 9 are diagrams showing the power transmission device 14 disposed inside the fuselage 74 of an aircraft. Fig. 8 is a diagram showing the power transmission device 14 as seen from the front. Fig. 9 is a diagram showing the power transmission device 14 as seen from the rear.

[0052] In the first embodiment, a load-side positive terminal 60a and a load-side negative terminal 60b are arranged on the upper surface of the power transmitting device 14, and a power supply-side positive terminal 58a and a power supply-side negative terminal 58b are arranged on the lower surface of the power transmitting device 14. In contrast, in the second embodiment, the load-side positive terminal 60a and the load-side negative terminal 60b are arranged on the rear surface of the power transmitting device 14, and the power supply-side positive terminal 58a and the power supply-side negative terminal 58b are arranged on the front surface of the power transmitting device 14.

[0053] [Modification] The present invention is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.

[0054] In the first embodiment, the load-side positive terminal 60a and the load-side negative terminal 60b are arranged on the upper surface of the power transmitting device 14, and the power supply-side positive terminal 58a and the power supply-side negative terminal 58b are arranged on the lower surface of the power transmitting device 14. Alternatively, the load-side positive terminal 60a and the load-side negative terminal 60b may be arranged on the lower surface of the power transmitting device 14, and the power supply-side positive terminal 58a and the power supply-side negative terminal 58b may be arranged on the upper surface of the power transmitting device 14.

[0055] In the second embodiment, the load-side positive terminal 60a and the load-side negative terminal 60b are arranged on the rear surface of the power transmitting device 14, and the power supply-side positive terminal 58a and the power supply-side negative terminal 58b are arranged on the front surface of the power transmitting device 14. Alternatively, the load-side positive terminal 60a and the load-side negative terminal 60b may be arranged on the front surface of the power transmitting device 14, and the power supply-side positive terminal 58a and the power supply-side negative terminal 58b may be arranged on the rear surface of the power transmitting device 14.

[0056] In the first and second embodiments, the power transmission device 14 has two load-side positive terminals 60a and two load-side negative terminals 60b. Alternatively, the power transmission device 14 may have four load-side positive terminals 60a and four load-side negative terminals 60b. In this case, the four load-side positive terminals 60a and the four load-side negative terminals 60b are arranged in a line in the following order: load-side positive terminal 60a, load-side negative terminal 60b, load-side negative terminal 60b, load-side positive terminal 60a, load-side negative terminal 60b, load-side negative terminal 60b, load-side positive terminal 60a, load-side negative terminal 60b, load-side negative terminal 60b, and load-side positive terminal 60a. Furthermore, the four load side positive electrode terminals 60a and the four load side negative electrode terminals 60b may be arranged in a row in the following order: load side negative electrode terminal 60b, load side positive electrode terminal 60a, load side positive electrode terminal 60a, load side negative electrode terminal 60b, load side negative electrode terminal 60b, load side positive electrode terminal 60a, load side positive electrode terminal 60a, and load side negative electrode terminal 60b.

[0057] The power supply system 10 may include a large-capacity battery instead of the power generation unit 12.

[0058] The power supply system 10 may include elements such as fuses, relays, breakers, transistors, resistors, coils, and capacitors in addition to the elements described in the first embodiment.

[0059] [Inventions Obtained from the Embodiments] The invention that can be understood from the above embodiment will be described below.

[0060] A power transmission device (14) that transmits power from a power supply device (22) to a load device (16) includes input terminals (58a, 58b) that are connected to the power supply device and receive DC power as input, and output terminals (60a, 60b) that are connected to the load device and output DC power. The output terminals have two positive terminals (60a) and two negative terminals (60b). The positive terminals and the negative terminals are arranged in a line in the order of the positive terminal, the negative terminal, the negative terminal, and the positive terminal, or the negative terminal, the positive terminal, the positive terminal, and the negative terminal.

[0061] The power supply system (10) having two power transmission devices has two of the power supply devices, and the two power transmission devices are arranged facing each other between the two power supply devices. [Explanation of symbols]

[0062] 10...Power supply system 14...Power transmission device 16...Drive module (load device) 22...PCU (power supply unit) 58a... Power supply side positive terminal (input terminal) 58b... Power supply side negative terminal (input terminal) 60a...Load side positive terminal (output terminal, positive terminal) 60b... Load side negative terminal (output terminal, negative terminal)

Claims

1. A power supply system including a plurality of power transmission devices that transmit power from a power supply device to a load device, The power transmission device is an input terminal connected to the power supply device and receiving DC power; an output terminal connected to the load device and outputting DC power; Equipped with the output terminals have two positive terminals and two negative terminals; The positive electrode terminal and the negative electrode terminal are arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, or in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, and the negative electrode terminal, a first power transmission device that is one of the pair of power transmission devices and a second power transmission device that is the other of the pair of power transmission devices are disposed opposite to each other; when the positive electrode terminal and the negative electrode terminal of the first power transmission device are arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, the positive electrode terminal and the negative electrode terminal of the second power transmission device are also arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, when the positive electrode terminal and the negative electrode terminal of the first power transmission device are arranged in a line in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, and the negative electrode terminal, the positive electrode terminal and the negative electrode terminal of the second power transmission device are also arranged in a line in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, and the negative electrode terminal, The positive electrode terminals facing each other are connected by wiring, and the negative electrode terminals facing each other are connected by wiring.

2. 2. The power supply system according to claim 1, A pair of the power supply units is provided, A power supply system in which the pair of power transmission devices are arranged facing each other between the pair of power supply devices.

3. 2. The power supply system according to claim 1, The power supply system, wherein the power supply device is disposed in close contact with the power transmission device.

4. 2. The power supply system according to claim 1, The input terminal of the power transmission device is connected to the output terminal of the power supply device by a wire.

5. 5. The power supply system according to claim 4, A power supply system, wherein the input terminal of the power transmission device is arranged to face the output terminal of the power supply device.

6. 2. The power supply system according to claim 1, A power supply system in which the two positive terminals and the two negative terminals arranged in a row are arranged symmetrically about a rotation axis perpendicular to a plane on which the output terminal of the power transmission device is arranged.

7. 7. The power supply system according to claim 6, The positive electrode terminals facing each other are connected to each other by a first positive electrode connection wiring among the plurality of wirings, The other positive electrode terminals facing each other are connected to each other by a second positive electrode connecting wiring among the plurality of wirings, The negative electrode terminals facing each other are connected to each other by a first negative electrode connecting wire among the plurality of wires, The other negative electrode terminals facing each other are connected to each other by a second negative electrode connecting wiring among the plurality of wirings, a first load device among the plurality of load devices is connected to the pair of power transmission devices via the first positive electrode connecting wiring and the first negative electrode connecting wiring; a second load device among the plurality of load devices connected to the pair of power transmission devices via the second positive electrode connecting wire and the second negative electrode connecting wire;

8. The power supply system according to any one of claims 1 to 7, An electrical power supply system installed on an aircraft.

9. 9. The power supply system according to claim 8, A power supply system in which the pair of power transmission devices are arranged at symmetrical positions about a center line in the width direction of the aircraft body.

10. A power supply system including a plurality of power transmission devices that transmit power from a power supply device to a load device, The power transmission device is an input terminal connected to the power supply device and receiving DC power; an output terminal connected to the load device and configured to output DC power; the output terminals include four positive terminals and four negative terminals; the positive electrode terminal and the negative electrode terminal are arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, or in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, and the negative electrode terminal, a first power transmission device that is one of the pair of power transmission devices and a second power transmission device that is the other of the pair of power transmission devices are disposed opposite to each other; when the positive electrode terminal and the negative electrode terminal of the first power transmission device are arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, the positive electrode terminal and the negative electrode terminal of the second power transmission device are also arranged in a line in the order of the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, and the positive electrode terminal, when the positive electrode terminal and the negative electrode terminal of the first power transmission device are arranged in a line in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, and the negative electrode terminal, the positive electrode terminal and the negative electrode terminal of the second power transmission device are also arranged in a line in the order of the negative electrode terminal, the positive electrode terminal, the positive electrode terminal, the negative electrode terminal, the negative electrode terminal, the positive electrode terminal, and the negative electrode terminal, The positive electrode terminals facing each other are connected by wiring, and the negative electrode terminals facing each other are connected by wiring.

Images