Power supply device

Abstract

Comprises: a first terminal block (91) and a second terminal block (92); a substrate (24A) which is separated from the first terminal block and the second terminal block in the orthogonal direction; and a housing (60) having a bottom wall (61) on which the substrate is provided, a partition wall (63) on which the first terminal block and the second terminal block are provided, and a top wall (64) away from the partition wall, a first access hole (64A) being provided in a portion of the top wall that overlaps the first terminal block, and a second access hole (64) being provided in a portion of the top wall that overlaps the second terminal block. A through hole (63A) which penetrates in the orthogonal direction and does not overlap with the first manhole and the second manhole in the orthogonal direction is provided in a portion of the partition wall between the first manhole and the second manhole, and a portion of the first terminal block is provided between the first manhole and the through hole. A part of the second terminal block is provided between the second access hole and the through hole.

Description

Citation of related applications

[0001] This application is based on patent application No. 2022-107160 filed in Japan on July 1, 2022, and the contents of the basic application are incorporated herein by reference in their entirety. Technical Field

[0002] The disclosure described in this specification relates to a power supply device. Background Art

[0003] Patent Document 1 describes an inverter comprising a substrate, a terminal block, and a housing for housing them. The terminal block is fixedly mounted on the upper side of the housing, and the substrate is positioned further inward than the terminal block. A fall prevention wall is provided on the upper surface of the terminal block to prevent foreign matter from falling off the terminal block. Furthermore, the housing has a plurality of inspection holes, which serve as openings for accessing the terminal block, at positions opposite the terminal block. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent No. 5287829 Summary of the Invention

[0005] In Patent Document 1, an opening is provided between the fall prevention wall and the wall opposite the fall prevention wall, connecting the upper side of the housing to the inner side. The length of the opening is longer than the distance between adjacent access holes in the direction in which the fall prevention wall and the wall opposite the fall prevention wall are aligned. Foreign matter that cannot be fully prevented by the fall prevention wall could potentially come into contact with the substrate located on the inner side of the housing through the opening.

[0006] An object of the present disclosure is to provide a power supply device that suppresses contact between foreign matter and a substrate.

[0007] A power supply device according to one embodiment of the present disclosure includes: A first terminal block and a second terminal block; a substrate, the substrate being disposed at a position away from the first terminal block and the second terminal block in a direction perpendicular to the direction in which the first terminal block and the second terminal block are arranged; and A frame having: a bottom wall for setting a substrate; a partition wall, wherein the partition wall is provided with a first terminal block and a second terminal block at a position away from the bottom wall in a direction perpendicular to the substrate; and a top wall, wherein the top wall is provided at a position farther away from the partition wall than the first terminal block and the second terminal block in the direction perpendicular to the substrate. A first inspection hole is provided on the top wall at a position overlapping with the first terminal block in the orthogonal direction, A second inspection hole is provided on the top wall at a position overlapping with the second terminal block in the orthogonal direction, A through hole is provided between the first manhole and the second manhole in the partition wall, which penetrates in the orthogonal direction and does not overlap with the first manhole and the second manhole in the orthogonal direction. A portion of the first terminal block is provided between the first access hole and the through hole, and a portion of the second terminal block is provided between the second access hole and the through hole.

[0008] This makes it difficult for foreign matter to pass through the through-hole, thereby preventing the foreign matter from coming into contact with the substrate.

[0009] In addition, the reference numerals in parentheses in the appended claims merely indicate the correspondence with the configurations described in the embodiments described later, and do not limit the technical scope in any way. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a block diagram of a power supply device. Figure 2 It is a top view of the power supply device. Figure 3 It is a top view after removing the cover. Figure 4 It is along Figure 2 A cross-sectional view taken along line IV-IV is shown. Figure 5 It is along Figure 3 A cross-sectional view taken along line VV is shown. Figure 6 It is a plan view of the power supply device according to the second embodiment. Figure 7 It is a cross-sectional view of a power supply device according to a third embodiment. Figure 8 It is a cross-sectional view of a power supply device according to a fourth embodiment. Figure 9 It is a cross-sectional view of a power supply device according to a fifth embodiment. Figure 10 It is a cross-sectional view of a power supply device according to a sixth embodiment. Figure 11 It is a cross-sectional view of a power supply device according to a seventh embodiment. Figure 12 It is a cross-sectional view of a power supply device according to an eighth embodiment. DETAILED DESCRIPTION

[0011] Hereinafter, with reference to the accompanying drawings, various embodiments for implementing the present disclosure will be described. In each embodiment, portions corresponding to those described in a previous embodiment may be denoted by the same reference numerals, and duplicate descriptions may be omitted. When only a portion of a structure is described in each embodiment, the previously described other embodiments may be applied to the remaining portions of the structure.

[0012] Furthermore, not only the combinations of parts that can be combined are explicitly described in each embodiment, but also embodiments, embodiments and modifications, and modifications may be partially combined even without explicit description, as long as there is no hindrance to the combination.

[0013] (First embodiment) based on Figures 1 to 5 The power supply system 1 and the power supply device 30 of this embodiment will be described. The power supply system 1 and the power supply device 30 are suitable for electric vehicles such as electric vehicles and plug-in hybrid vehicles.

[0014] <Power supply system and power supply device> like Figure 1 As shown, the power supply device 30 is included in the power supply system 1 of the vehicle. The power supply device 30 includes a battery pack 10 and a distribution module 20. The power supply system 1 includes a battery pack 10, a distribution module 20, a first on-board load 41, a second on-board load 42, a FrPCU 51, a FrMG 52, a RrPCU 53 and a RrMG 54. A DC power supply 70 and an AC power supply 80 are externally connected to the above-mentioned power supply system 1. PCU is an abbreviation for Power Control Unit. MG is an abbreviation for Motor Generator. ECU is an abbreviation for Electronic Control Unit. In addition, FrMG 52 is equivalent to the first motor. RrMG 54 is equivalent to the second motor.

[0015] As a power supply path, the battery pack 10 and the distribution module 20 are electrically connected via conductive members such as a wiring harness and busbars. The first and second onboard loads 41, 42, the FrPCU 51, and the RrPCU 53 are electrically connected to the distribution module 20 via conductive members. The FrMG 52 is electrically connected to the FrPCU 51 via conductive members. The RrMG 54 is electrically connected to the RrPCU 53 via conductive members.

[0016] In the following description, components referred to as wires correspond to conductive components such as wiring harnesses or busbars. The FrPCU 51 and RrPCU 53 include inverters or converters for power conversion. The multiple switches included in these inverters or converters are controlled on and off by the onboard ECU. The FrPCU 51 and RrPCU 53 are controlled by the onboard ECU.

[0017] The DC power output from the battery pack 10 is supplied via the distribution module 20 to the first and second onboard loads 41, 42, the FrPCU 51, and the RrPCU 53. The FrPCU 51 and RrPCU 53 convert the supplied DC power into AC power. Conversely, the FrPCU 51 and RrPCU 53 convert the supplied AC power into DC power. The FrMG 52 and RrMG 54 are motor generators used to propel the vehicle. The FrMG 52 is powered by the AC power supplied by the FrPCU 51. The RrMG 54 is powered by the AC power supplied by the RrPCU 53.

[0018] The front wheels rotate due to power from the FrMG 52. The rear wheels rotate due to power from the RrMG 54. Furthermore, the FrMG 52 generates regenerative power using the vehicle's propulsion. The AC power generated by this regenerative power is converted to DC power by the FrPCU 51. The RrMG 54 generates regenerative power using the vehicle's propulsion. The AC power generated by this regenerative power is converted to DC power by the RrPCU 53. This DC power is supplied to the first and second onboard loads 41 and 42 via the distribution module 20. This DC power is also supplied to the battery pack 10 via the distribution module 20.

[0019] For simplicity, the DC power supplied from the battery pack 10 is referred to below as "source power." The power generated by regenerative power generation and converted to DC power by the FrPCU 51 and RrPCU 53 is referred to as "regenerative power." The distribution module 20 supplies the source power and regenerative power output from within the vehicle to various electrical devices installed in the vehicle. Furthermore, the distribution module 20 supplies charging power supplied from an external power source to various electrical devices installed in the vehicle. The components of the battery pack 10 and distribution module 20 are described below.

[0020] Battery Pack The battery pack 10 includes a battery pack 11, a SMR 12, a power relay 13, a battery ECU 14, and battery connectors 15A and 15B. The drive of the SMR 12 and power relay 13 is controlled by the battery ECU 14. The output to the battery connectors 15A and 15B is controlled to be energized and disconnected by the drive of the SMR 12 and power relay 13. The output to the distribution module 20 is controlled to be energized and disconnected by driving the SMR 12 and power relay 13. In the drawings, the battery ECU 14 is abbreviated as "BAECU."

[0021] The battery pack 11 includes a plurality of battery cells connected in series. The voltage corresponding to the potential difference between the positive terminal of the battery cell with the highest potential and the negative terminal of the battery cell with the lowest potential among the plurality of battery cells connected in series corresponds to the power supply voltage of the battery pack 11. The battery cells included in the battery pack 11 can be, for example, secondary batteries such as lithium-ion batteries.

[0022] One end of the first power line 10A is connected to the positive terminal of the battery cell at the highest potential among the multiple battery cells connected in series. One end of the second power line 10B is connected to the negative terminal of the battery cell at the lowest potential. The other ends of these first power lines 10A and second power lines 10B are provided in the first battery connector 15A. SMRs 12 are provided in the first power lines 10A and second power lines 10B. SMRs 12 are mechanical switching elements. SMRs 12 are switching elements that switch between on and off states by inputting a drive signal output from the battery ECU 14. SMR is the abbreviation for System Main Relay.

[0023] One end of the third power line 10C is connected to the midpoint between the battery pack 11 and the SMR 12 in the first power line 10A. One end of the fourth power line 10D is connected to the midpoint between the battery pack 11 and the SMR 12 in the second power line 10B. The other ends of these third and fourth power lines 10C and 10D are connected to the second battery connector 15B. Power supply relays 13 are provided in the third and fourth power lines 10C and 10D. Power supply relays 13 are mechanical switching elements.

[0024] The power relay 13 is a switching element that switches between an on-state and an off-state by inputting a drive signal output from the battery ECU 14. The battery ECU 14 communicates with the vehicle-mounted ECU and the power supply ECU 26 described later via wiring (not shown). The battery ECU 14 controls the driving of the SMR 12 and the power relay 13 based on the communication with these ECUs. As described above, the other ends of the first power line 10A and the second power line 10B are provided on the first battery connector 15A. The other ends of the third power line 10C and the fourth power line 10D are provided on the second battery connector 15B. The connection and disconnection of these four power lines are controlled by outputting or not outputting drive signals from the battery ECU 14 to the SMR 12 and the power relay 13. The other ends of these four power lines are connected to the distribution module 20.

[0025] <Distribution Module> The distribution module 20 includes DC relays 23A and 23B, a DC-DC converter 24, an ACDC converter 25, a power supply ECU 26, and a supply connector 28. The DC relays 23A and 23B are mechanical switches. The DC relays 23A and 23B are switches that switch between an on-state and an off-state by inputting a drive signal output from the power supply ECU 26. The DC-DC converter 24 steps down the supplied power to 12V and supplies it to the second vehicle-mounted load 42. The ACDC converter 25 converts the AC power supplied from the AC power supply 80 into DC power. In addition, in the drawings, the power supply ECU 26 is simply referred to as "PDECU." The power supply ECU 26 is equivalent to an electrical component. The power supply ECU 26 is sometimes also referred to as a control device.

[0026] The power supply ECU 26 communicates with the onboard ECU or battery ECU 14 via wiring (not shown). Based on communication with the ECU or vehicle signals containing vehicle information input from onboard sensors (not shown), the power supply ECU 26 controls the driving of the DC-DC converter 24, DC relays 23A and 23B, and AC-DC converter 25. The supply connector 28 includes a first power supply connector 28A, a second power supply connector 28B, a first load connector 28C, a second load connector 28D, a DC connector 28E, an FrPCU connector 28F, an RrPCU connector 28G, and an AC power supply connector 28H. The FrPCU connector 28F corresponds to the first connector, and the RrPCU connector 28G corresponds to the second connector.

[0027] The first battery connector 15A is electrically connected to the first power connector 28A. One end of the first power line 20A and the second power line 20B are provided on the first power connector 28A. The other end of the first power line 10A is connected to one end of the first power line 20A. The other end of the second power line 10B is connected to one end of the second power line 20B. Thus, when the SMR 12 of the battery pack 11 is in the on state, the first power line 20A and the second power line 20B are electrically connected to the battery pack 11. When the SMR 12 is in the off state, the electrical connection between the first power line 20A and the second power line 20B and the battery pack 11 is severed.

[0028] First power line 20A branches into multiple positive lines. Similarly, second power line 20B branches into multiple negative lines. The ends of these multiple positive and negative lines are connected to load connectors 28C and 28D, DC connector 28E, FrPCU connector 28F, and RrPCU connector 28G, serving as the other ends of first power line 20A and second power line 20B. Furthermore, DC relays 23A and 23B and a DC-DC converter 24 are provided on the positive and negative lines. Details of the positive and negative lines will be discussed later.

[0029] The second battery connector 15B is electrically connected to the second power connector 28B. One end of the third power line 20C and one end of the fourth power line 20D are provided on the second power connector 28B. The other end of the third power line 10C is electrically connected to one end of the third power line 20C. The other end of the fourth power line 10D is electrically connected to one end of the fourth power line 20D. When the power supply relay 13 of the battery pack 11 is turned on, the third power line 20C and the fourth power line 20D are electrically connected to the battery pack 11. When the power supply relay 13 is turned off, the electrical connection between the third power line 20C and the fourth power line 20D and the battery pack 11 is severed.

[0030] A / D converters 25 are provided on the third and fourth power lines 20C, 20D. The other ends of these third and fourth power lines 20C, 20D are connected to an AC power supply connector 28H. An AC power supply 80 is externally connected to the AC power supply connector 28H. Thus, when the power supply relay 13 is turned on, the battery pack 11 and the AC power supply 80 are electrically connected via the A / D converters 25.

[0031] <Positive and negative cables> like Figure 1 As shown, the first power line 20A branches from the first main wiring into four: a first positive line 21A, a second positive line 21B, a third positive line 21C, and a fourth positive line 21. The second power line 20B branches from the second main wiring into four: a first negative line 22A, a second negative line 22B, a third negative line 22C, and a fourth negative line 22D.

[0032] The ends of the first positive line 21A and the first negative line 22A are connected to the first load connector 28C. Thus, when the SMR 12 is in the on-state, the battery pack 11 and the first onboard load 41 are electrically connected. The ends of the second positive line 21B and the second negative line 22B are connected to the second load connector 28D. The DC-DC converter 24 is provided on these second positive line 21B and the second negative line 22B. Thus, when power is supplied to the DC-DC converter 24, 12V DC power is supplied to the second onboard load 42.

[0033] The ends of the third positive line 21C and the third negative line 22C are connected to a DC connector 28E. A DC relay 23 is provided on each of the third positive line 21c and the third negative line 22c. The DC relays 23A and 23B include a first DC relay 23A and a second DC relay 23B. The first DC relay 23A is provided on the third positive line 21C. The second DC relay 23B is provided on the third negative line 22C. When the DC relays 23A and 23B are turned on, the first on-vehicle load 41 and the DC-DC converter 24 are electrically connected to the DC power supply 70. Furthermore, when the SMR 12 is turned on, the battery pack 11 is electrically connected to the DC power supply 70.

[0034] The fourth positive line 21D branches at its front end into a first positive branch line 21E and a second positive branch line 21F. An FrPCU 51 is provided at the front end of the first positive branch line 21E. An RrPCU 53 is provided at the front end of the second positive branch line 21F. Similarly, the fourth negative line 22D branches at its front end into a first negative branch line 22E and a second negative branch line 22F. An FrPCU 51 is provided at the front end of the first negative branch line 22E. An RrPCU 53 is provided at the front end of the second negative branch line 22F. The first on-board load 41 and the DC-DC converter 24 are electrically connected to the PCUs 51 and 53. When the SMR 12 is in the on state, the battery pack 11 and the PCUs 51 and 53 are electrically connected. The FrPCU 51 and the RrPCU 53 are sometimes collectively referred to as PCUs 51 and 53.

[0035] <Mechanical Structure of Power Supply Device> When describing the components included in the power supply device 30, the thickness direction of the bottom wall 61, described later, is sometimes referred to as the TD direction (thickness direction). The depth directions, which are two directions orthogonal to the TD direction, are sometimes referred to as the DP direction (depth direction), and the width directions are sometimes referred to as the WD direction (width direction). The DP and WD directions correspond to the directions in which the bottom surface 61A and bottom back surface 61B of the bottom wall 61 extend. The DP direction corresponds to the arrangement direction. The TD direction corresponds to the orthogonal direction.

[0036] In addition to the components described so far, the power supply device 30 includes a substrate 24A, a housing 60, and a terminal block unit 90. The substrate 24A is provided with a function capable of controlling the DC-DC converter 24 in the power supply ECU 26. The DC-DC converter 24 includes the substrate 24A. Alternatively, the distribution module 20 includes the substrate 24A. The housing 60 is a housing for housing the components included in the distribution module 20.

[0037] <Fr Line and Rr Line> The substrate 24A is electrically connected to the FrPCU 51 and the RrPCU 53. The substrate 24A and the FrPCU 51 are electrically connected via the second positive line 21B, the first power line 20A, the fourth positive line 21D, and the first positive branch line 21E. The substrate 24A and the FrPCU 51 are electrically connected via the second negative line 22B, the second power line 20B, the fourth negative line 22D, and the first negative branch line 22E. The second positive line 21B, the first power line 20A, the fourth positive line 21D, and the first positive branch line 21E are sometimes collectively referred to as the positive Fr line 29A. The second negative line 22B, the second power line 20B, the fourth negative line 22D, and the first negative branch line 22E are sometimes collectively referred to as the negative Fr line 29B.

[0038] The substrate 24A and the RrPCU 53 are electrically connected via the second positive line 21B, the first power line 20A, the fourth positive line 21D, and the second positive branch line 21F. The substrate 24A and the RrPCU 53 are electrically connected via the second negative line 22B, the second power line 20B, the fourth negative line 22D, and the second negative branch line 22F. The second positive line 21B, the first power line 20A, the fourth positive line 21D, and the second positive branch line 21F are sometimes collectively referred to as the positive Rr line 29C. The second negative line 22B, the second power line 20B, the fourth negative line 22D, and the second negative branch line 22F are sometimes collectively referred to as the negative Rr line 29D.

[0039] The substrate 24A and the FrPCU 51 are electrically connected via the positive Fr wire 29A and the negative Fr wire 29B. The substrate 24A and the RrPCU 53 are electrically connected via the positive Rr wire 29C and the negative Rr wire 29D. Furthermore, the positive Fr wire 29A and the positive Rr wire 29C share a common second positive wire 21B. The negative Fr wire 29B and the negative Rr wire 29D share a common second negative wire 22B.

[0040] The second positive line 21B is electrically connected to the substrate 24A, the FrPCU 51, and the RrPCU 53. The second negative line 22B is electrically connected to the substrate 24A, the FrPCU 51, and the RrPCU 53. In other words, the second positive line 21B is electrically connected to the substrate 24A, the FrPCU connector 28F, and the RrPCU connector 28G. The second negative line 22B is electrically connected to the substrate 24A, the FrPCU connector 28F, and the RrPCU connector 28G. The second positive line 21B corresponds to the first conductive member, while the second negative line 22B corresponds to the second conductive member.

[0041] The terminal block unit 90 is a fixing block that supports and secures the conductive members of the first branch lines 21E and 22E and the FrPCU connector 28F, as well as the conductive members of the second branch lines 21F and 22F and the RrPCU connector 28G. The first positive branch line 21E and the first negative branch line 22E are sometimes referred to as first branch lines 21E and 22E. The second positive branch line 21F and the second negative branch line 22F are sometimes referred to as second branch lines 21F and 22F. The terminal block unit 90 will be described in detail later.

[0042] The frame 60 is mainly made of metal such as aluminum. The frame 60 includes a bottom wall 61, a side wall 62, a partition wall 63 and a cover 64. Figure 3 , a top view of the power supply device 30 with the cover 64 removed is shown. Figure 3 In Figure 2 The same positions are marked with a single-dot chain line. In addition, the cover 64 corresponds to the top wall. The power supply device 30 is installed in the vehicle so that the bottom wall 61 is located below the cover 64 in the direction of gravity. However, the installation state of the power supply device 30 is not limited to this.

[0043] The bottom wall 61 is a flat shape that is relatively thin in the TD direction. The bottom wall 61 includes a bottom surface 61A and a bottom back surface 61B that are spaced apart in the TD direction. The side wall 62 is formed from the same material as the bottom wall 61 and is continuously provided on the bottom surface 61A. The side wall 62 extends annularly along the periphery of the bottom surface 61A and extends away from the bottom surface 61A. The side wall 62 includes a first wall portion 62A and a third wall portion 62C that are spaced apart in the WD direction, and a second wall portion 62B and a fourth wall portion 62D that are spaced apart in the DP direction. The first wall portion 62A, the second wall portion 62B, the third wall portion 62C, and the fourth wall portion 62D are continuous in the clockwise direction.

[0044] The partition wall 63 is a flat shape with a relatively thin thickness in the TD direction. The partition wall 63 is continuously provided on the inner surface of the side wall 62 using the same material as the side wall 62. The partition wall 63 is provided between the bottom wall 61 and the end of the side wall 62 away from the bottom wall 61. The cover 64 is a flat shape with a relatively thin thickness in the TD direction. The cover 64 is provided at the end of the side wall 62 away from the bottom wall 61. A portion of the components included in the distribution module 20 is provided in the first space 60A between the partition wall 63 and the cover 64. Another portion of the components included in the distribution module 20 is provided in the second space 60B between the partition wall 63 and the bottom wall 61. The terminal block unit 90 is provided in the first space 60A. The substrate 24A is provided in the second space 60B. In addition, in the drawings, metal shading is indicated on the substrate 24A as a representative, but in reality, these metal components are provided on a resin base material.

[0045] The partition wall 63 is provided with a through-hole 63A that opens in the TD direction. The through-hole 63A is provided between the first access hole 64A and the second access hole 64B in the DP direction. In the DP direction, the first access hole 64A, the second access hole 64B, and the through-hole 63A are provided separately. The second positive line 21B connecting the substrate 24A to the first power line 20A and the second negative line 22B connecting the substrate 24A to the second power line 20B pass through the through-hole 63A. Alternatively, the substrate 24A and the first power line 20A are connected via the second positive line 21B. Alternatively, the substrate 24A and the second power line 20B are connected via the second negative line 22B. The through-hole 63A is equivalent to a through-hole.

[0046] Alternatively, it can be said that the positive and negative Fr wires 29A and 29B, as well as the positive and negative Rr wires 29C and 29D, pass through the through-hole 63A. Alternatively, it can be said that the substrate 24A and the FrPCU connector 28F are connected via the positive and negative Fr wires 29A and 29B. Alternatively, it can be said that the substrate 24A and the RrPCU connector 28G are connected via the positive and negative Rr wires 29C and 29D.

[0047] Alternatively, the second positive electrode wire 21B and the second negative electrode wire 22B may not pass through the through-hole 63A. In other words, the positive and negative Fr wires 29A and 29B, and the positive and negative Rr wires 29C and 29D may not pass through the through-hole 63A. A through-hole different from the through-hole 63A may be provided in the partition wall 63. The second positive electrode wire 21B and the second negative electrode wire 22B may pass through a through-hole different from the through-hole 63A. In other words, the positive and negative Fr wires 29A and 29B, and the positive and negative Rr wires 29C and 29D may pass through a through-hole different from the through-hole 63A.

[0048] The DC connector 28E is provided on the first wall portion 62A. The first power connector 28A, the FrPCU connector 28F, and the RrPCU connector 28G are provided on the third wall portion 62C. The DC connector 28E is provided on the fourth wall portion 62D side of the first wall portion 62A. The first power connector 28A is provided on the fourth wall portion 62D side of the third wall portion 62C. The DC connector 28E and the first power connector 28A are provided on the side wall 62 in the WD direction. The RrPCU connector 28G is provided on the second wall portion 62B side of the third wall portion 62C. The FrPCU connector 28F is provided in the third wall portion 62C between the first power connector 28A and the RrPCU connector 28G.

[0049] Third positive line 21C and third negative line 22C extend from DC connector 28E toward first power connector 28A. First power line 20A and second power line 20B extend from first power connector 28A toward DC connector 28E. A first DC relay 23A is provided between the end of third positive line 21C on the first power connector 28A side and the end of first power line 20A on the DC connector 28E side. A second DC relay 23B is provided between the end of third negative line 22C on the first power connector 28A side and the end of second power line 20B on the DC connector 28E side.

[0050] Furthermore, the first power line 20A extends toward the second wall 62B midway from the first power connector 28A toward the DC connector 28E. The second power line 20B extends toward the second wall 62B midway from the first power connector 28A toward the DC connector 28E. As described above, the FrPCU connector 28F and the RrPCU connector 28G are provided on the third wall 62C. The first branch lines 21E and 22E are provided on the FrPCU connector 28F. The second branch lines 21F and 22F are provided on the RrPCU connector 28G. The first branch lines 21E and 22E extend toward the first wall 62A, away from the FrPCU connector 28F. The second branch lines 21F and 22F extend toward the first wall 62A, away from the RrPCU connector 28G.

[0051] As described above, the second positive wire 21B and the second negative wire 22B pass through the through-hole 63A. The second positive wire 21B and the second negative wire 22B pass through the through-hole 63A and extend from the second space 60B to the first space 60A. The second positive wire 21B and the second negative wire 22B passing through the first space 60A extend toward the first wall portion 62A.

[0052] like Figure 3 As shown, the ends of the first positive branch line 21E, the second positive branch line 21F, and the second positive line 21B are electrically connected to the end of the first power line 20A extending toward the second wall portion 62B via a conductive member. This conductive member is part of the first power line 20A. The ends of the first negative branch line 22E, the second negative branch line 22F, and the second negative line 22B are electrically connected to the end of the second power line 20B extending toward the second wall portion 62B via a conductive member. This conductive member is part of the second power line 20B.

[0053] like Figure 4 and Figure 5 As shown, the terminal block unit 90 includes a first terminal block 91, a second terminal block 92 and a connecting wall 93. The terminal block unit 90 is composed of a resin or the like as a main component. The first terminal block 91 and the second terminal block 92 are separated in the DP direction. The connecting wall 93 includes a first connecting wall 93A and a second connecting wall 93B. The first connecting wall 93A and the second connecting wall 93B are separated in the WD direction. The first connecting wall 93A is provided in a manner that connects the edge of the third wall portion 62C side of the first support portion 91A and the edge of the third wall portion 62C side of the second support portion 92A. The second connecting wall 93B is provided in a manner that connects the edge of the first support portion 91A on the first wall portion 62A side and the edge of the second support portion 92A on the first wall portion 62A side.

[0054] The lengths of the first and second connecting walls 93A and 93B in the TD direction are set to such a length that even if foreign matter such as dust enters the interior of the housing 60 , the foreign matter does not move to the through hole 63A due to vibration or the like.

[0055] The first terminal block 91 and the second terminal block 92 are integrally connected via the second connecting wall 93B and the first connecting wall 93A. The first terminal block 91, the second terminal block 92, the first connecting wall 93A and the second connecting wall 93B define an opening 94 that opens in the TD direction. The through hole 63A is surrounded on all sides by the first terminal block 91, the second terminal block 92, the first connecting wall 93A and the second connecting wall 93B. Figure 4 As shown, opening 94 and through-hole 63A overlap in the TD direction. In the TD direction, opening 94 and through-hole 63A communicate. As an example, the width of opening 94 in the DP direction is equal to the width of through-hole 63A in the DP direction. Alternatively, the width of opening 94 and through-hole 63A may be different. The width of through-hole 63A may also be narrower than the width of opening 94.

[0056] The first terminal block 91 includes a first support portion 91A, a first inner wall 91B, and a first outer wall 91C. The first positive branch line 21E, the first negative branch line 22E, and the conductive components of the FrPCU connector 28F are mounted on the first support portion 91A. These components are connected and secured to the first support portion 91A via a connecting member 100. The first inner wall 91B serves as the first support wall.

[0057] A first inner wall 91B is provided at the end of the first support portion 91A on the second wall portion 62B side. A first outer wall 91C is provided at the end of the first support portion 91A on the fourth wall portion 62D side. The first inner wall 91B and the first outer wall 91C extend away from the first support portion 91A toward the cover 64. Between the first inner wall 91B and the first outer wall 91C are provided the first positive branch line 21E, the first negative branch line 22E, the conductive members of the FrPCU connector 28F, and the connecting member 100 that connects them.

[0058] The second terminal block 92 includes a second support portion 92A, a second inner wall 92B, and a second outer wall 92C. The second positive branch line 21F, the second negative branch line 22F, and the conductive components of the RrPCU connector 28G are mounted on the second support portion 92A. The second positive branch line 21F, the second negative branch line 22F, and the conductive components of the RrPCU connector 28G are connected and fixed to the second support portion 92A via a connecting member 100. The second inner wall 92B serves as a second support wall.

[0059] A second inner wall 92B is provided at the end of the second support portion 92A on the fourth wall portion 62D side. A second outer wall 92C is provided at the end of the second support portion 92A on the second wall portion 62B side. The second inner wall 92B and the second outer wall 92C extend away from the second support portion 92A toward the cover 64. Between the second inner wall 92B and the second outer wall 92C are located the second positive branch line 21F, the second negative branch line 22F, the conductive members of the RrPCU connector 28G, and the connecting member 100 that connects them.

[0060] Furthermore, the cover 64 is provided with a first access hole 64A that allows access to the connecting member 100 that connects the first branch lines 21E and 22E to the conductive member of the FrPCU connector 28F. The first access hole 64A is provided at a position in the cover 64 that overlaps with the first terminal block 91 in the TD direction. More specifically, the first access hole 64A is provided at a position in the cover 64 that overlaps with the connecting member 100 that connects the first branch lines 21E and 22E to the conductive member of the FrPCU connector 28F. The first access hole 64A is provided within the projection area of ​​the first terminal block 91 in the TD direction.

[0061] The cover 64 is provided with a second access hole 64B that allows access to the connecting member 100 that connects the second branch lines 21F and 22F to the conductive member of the RrPCU connector 28G. The second access hole 64B is provided at a position in the cover 64 that overlaps with the second terminal block 92 in the TD direction. More specifically, the second access hole 64B is provided at a position that overlaps with the connecting member 100 that connects the second branch lines 21F and 22F to the conductive member of the RrPCU connector 28G. The second access hole 64B is provided within the projection area of ​​the second terminal block 92 in the TD direction.

[0062] As described above, in the DP direction, the first and second access holes 64A, 64B, and through-hole 63A are provided separately. Furthermore, in the TD direction, the first and second access holes 64A, 64B, and through-hole 63A do not overlap. In the DP direction, through-hole 63A is provided between the first and second access holes 64A, 64B. The width of through-hole 63A in the DP direction is narrow enough to be located between the first and second access holes 64A, 64B.

[0063] In addition, access holes 64A and 64B are provided in the cover 64 to allow operators to perform wiring operations. The power supply device 30 is assembled in a process separate from the vehicle assembly process and then delivered to the vehicle assembly process for assembly. During the vehicle assembly process, the power supply device 30 needs to be wired to external components. To facilitate this wiring work without removing the components of the power supply device 30 from the housing 60, the housing 60 is provided with a first access hole 64A and a second access hole 64B.

[0064] <Manholes and through holes> like Figure 4 As shown, a first terminal block 91 and a second terminal block 92 are provided in the partition wall 63. The first terminal block 91 is provided in a portion of the partition wall 63 closer to the fourth wall portion 62D than the through hole 63A. The second terminal block 92 is provided in a portion of the partition wall 63 closer to the second wall portion 62B than the through hole 63A.

[0065] The first edge portion 65A of the edge of the first access hole 64A on the side of the second access hole 64B is positioned closer to the fourth wall portion 62D than the first inner surface 63B of the inner wall on the side of the fourth wall portion 62D of the through hole 63A. The second edge portion 65B of the edge of the second access hole 64B on the side of the first access hole 64A is positioned closer to the second wall portion 62B than the second inner surface 63C of the inner wall on the side of the second wall portion 62B of the through hole 63A. The first access hole 64A is provided in the cover 64 at a position overlapping with the first terminal block 91 in the TD direction. The second access hole 64B is provided in the cover 64 at a position overlapping with the second terminal block 92 in the TD direction.

[0066] A first terminal block 91 is provided in the partition wall 63 to allow access from the first access hole 64A to the connecting member 100 that connects the first branch lines 21E and 22E to the FrPCU connector 28F. A second terminal block 92 is provided in the partition wall 63 to allow access from the second access hole 64B to the connecting member 100 that connects the second branch lines 21F and 22F to the RrPCU connector 28G.

[0067] Furthermore, a first inner wall 91B extends from the first support portion 91A toward the cover 64. The first inner wall 91B is positioned closer to the second edge portion 65B than the first edge portion 65A. The first inner wall 91B is provided between the first access hole 64A and the through-hole 63A. The height of the first inner wall 91B in the TD direction is set such that even if foreign matter such as dust enters the interior through the first access hole 64A, the foreign matter cannot move into the through-hole 63A.

[0068] Second inner wall 92B extends from second support portion 92A toward cover 64. Second inner wall 92B is located closer to first edge portion 65A than second edge portion 65B. Second inner wall 92B is provided between second access hole 64B and through-hole 63A. The height of second inner wall 92B in the TD direction is set such that even if foreign matter intrudes through second access hole 64B, it cannot move into through-hole 63A.

[0069] As described above, substrate 24A is disposed in second space 60B. Substrate 24A is disposed on bottom wall 61. Second positive and second negative cables 21B and 22B are connected to substrate 24A. Second positive and second negative cables 21B and 22B pass through through-hole 63A and extend from second space 60B to first space 60A. Second positive and second negative cables 21B and 22B extend from second space 60B toward first space 60A, extending further toward cover 64 than second connecting wall 93B in the TD direction. Second positive and second negative cables 21B and 22B pass between second connecting wall 93B and cover 64 in first space 60A and extend toward first wall portion 62A.

[0070] The opening width of the through hole 63A in the DP direction is narrow enough to allow the second positive electrode line 21B and the second negative electrode line 22B to pass through. In other words, the length between the edges of the opening of the through hole 63A in the DP direction is short enough to allow the second positive electrode line 21B and the second negative electrode line 22B to pass through.

[0071] Furthermore, in the DP direction, the width of the opening of the opening portion 94 is narrower than the width of the opening of the through-hole 63A. The first inner wall 91B is located closer to the second wall portion 62B than the first inner surface 63B. The second inner wall 92B is located closer to the fourth wall portion 62D than the second inner surface 63C. In other words, the first inner wall 91B is located closer to the center of the through-hole 63A than the first inner surface 63B. The second inner wall 92B is located closer to the center of the through-hole 63A than the second inner surface 63C.

[0072] In addition, in the first terminal block 91 and the second terminal block 92, there are sometimes openings (Japanese: 肉抜き) provided in the product design. In this case, foreign matter that has invaded the interior through the inspection holes 64A and 64B may pass through the gap between the first terminal block 91 and the second terminal block 92 and the partition wall 63 and fall from the through-hole 63A into the second space 60B. In order to suppress such foreign matter from falling into the second space 60B, anti-movement walls 95 that contact the partition wall 63 and can suppress the movement of foreign matter are provided on the first terminal block 91 and the second terminal block 92. Additionally, as another method, openings may not be provided in the first terminal block 91 and the second terminal block 92. In this case, they may be arranged in such a way that the first terminal block 91 and the second terminal block 92 contact the partition wall 63.

[0073] <Function and Effect> As described so far, the terminal block unit 90 is provided in the first space 60A. The substrate 24A is provided in the second space 60B. In the partition wall 63, the first terminal block 91 and the second terminal block 92 are provided separately in the DP direction. The first inner wall 91B extends from the first support portion 91A toward the cover 64. The second inner wall 92B extends from the second support portion 92A toward the cover 64.

[0074] The first inspection hole 64A is provided at the position where the first terminal block 91 in the cover 64 overlaps. The second inspection hole 64B is provided at the position where the second terminal block 92 in the cover 64 overlaps. A through-hole 63A that opens in the TD direction is provided in the partition wall 63. The through-hole 63A is provided between the first inspection hole 64A and the second inspection hole 64B in the DP direction. In the TD direction, the first inspection hole 64A and the second inspection hole 64B do not overlap with the through-hole 63A.

[0075] The first inner wall 91B, which is a part of the first terminal block 91, is provided between the first inspection hole 64A and the through-hole 63A. The second inner wall 92B, which is a part of the second terminal block 92, is provided between the second inspection hole 64B and the through-hole 63A. The through-hole 63A is small enough to be provided between the first inspection hole 64A and the second inspection hole 64B.

[0076] The first inner wall 91B is provided between the through-hole 63A and the first inspection hole 64A. The second inner wall 92B is provided between the through-hole 63A and the second inspection hole 64B. As a result, foreign matter is not likely to pass through the through-hole 63A. Therefore, it is possible to suppress foreign matter from contacting the substrate 24A stored in the second space 60B. It is possible to suppress foreign matter from contacting the substrate 24A without increasing the number of components, and thus it is also possible to suppress an increase in size. It is also possible to improve quality.

[0077] As described so far, first terminal block 91 and second terminal block 92 are integrally connected via first connecting wall 93A and second connecting wall 93B. Through-hole 63A is surrounded on all sides by first terminal block 91, second terminal block 92, first connecting wall 93A, and second connecting wall 93B. This makes it difficult for foreign matter to pass through through-hole 63A from any direction. Consequently, foreign matter is less likely to pass through through-hole 63A.

[0078] As described so far, the first access hole 64A is provided within the projection area of ​​the first terminal block 91 in the TD direction. The second access hole 64B is provided within the projection area of ​​the second terminal block 92 in the TD direction. The opening widths of the first access hole 64A and the second access hole 64B are narrow enough to facilitate operator work. This prevents foreign matter from entering the interior of the housing 60. Foreign matter is also less likely to pass through the narrow openings of the first access hole 64A and the second access hole 64B and into the through-hole 63A.

[0079] As described so far, the second positive line 21B and the second negative line 22B are connected to the substrate 24A. The second positive line 21B and the second negative line 22B pass through the through-hole 63A and extend from the second space 60B to the first space 60A. The opening width of the through-hole 63A in the DP direction is narrow enough to allow the second positive line 21B and the second negative line 22B to pass through. This makes it more difficult for foreign matter to pass through the through-hole 63A. This effectively prevents foreign matter from coming into contact with the substrate 24A housed in the second space 60B.

[0080] As described so far, the positive and negative Fr wires 29A and 29B, and the positive and negative Rr wires 29C and 29D pass through the through-hole 63A. The positive Fr and Rr wires 29A and 29C comprise the second positive wire 21B. The negative Fr and Rr wires 29B and 29D comprise the second negative wire 22B. The through-hole 63A is provided between the FrPCU connector 28F and the RrPCU connector 28G in the DP direction.

[0081] The FrMG 52 connected to the FrPCU connector 28F and the RrMG 54 connected to the RrPCU connector 28G are, for example, installed in the same space in the vehicle. Consequently, the FrPCU connector 28F and the RrPCU connector 28G are sometimes installed adjacent to each other for efficient wiring. In this case, the FrPCU connector 28F and the RrPCU connector 28G are installed adjacent to each other, for example, with a distance sufficient to provide clearance for tools.

[0082] Sometimes, space for arranging electrical components and the like is insufficient between FrPCU connector 28F and RrPCU connector 28G, resulting in a dead space. In this embodiment, a through hole 63A is proactively provided in this dead space. Second positive line 21B and second negative line 22B pass through through hole 63A. Thus, in this embodiment, the dead space is utilized while preventing foreign matter from coming into contact with substrate 24A.

[0083] As described so far, first inner wall 91B is positioned closer to the center of through-hole 63A than first inner surface 63B. Second inner wall 92B is positioned closer to the center of through-hole 63A than second inner surface 63C. This makes it difficult for foreign matter to pass between first inner wall 91B and second inner wall 92B. Consequently, foreign matter is also less likely to pass through through-hole 63A.

[0084] (Second embodiment) like Figure 6 As shown, in the second embodiment, the terminal block unit 90 may not include the connecting wall 93. In the second embodiment, the first terminal block 91 and the second terminal block 92 are separated in the DP direction. In the second embodiment, the same effects as those of the first embodiment are achieved.

[0085] (Third embodiment) like Figure 7 As shown, in the third embodiment, the power supply device 30 is provided with a buffer 310 that can suppress vibrations transmitted to the terminal block unit 90. Examples of the buffer 310 include sponge or a gel-like member. The buffer 310 is provided between the partition wall 63 and the first terminal block 91, and between the partition wall 63 and the second terminal block 92. This suppresses vibrations from being transmitted to the terminal block unit 90. Consequently, electrical connection failures between the first branch lines 21E and 22E and the FrPCU connector 28F can be suppressed. Electrical connection failures between the second branch lines 21F and 22F and the RrPCU connector 28G can also be suppressed.

[0086] (Fourth embodiment) like Figure 8 As shown, in the fourth embodiment, the power supply device 30 is provided with an adhesive 410 capable of capturing foreign matter that enters through the first access hole 64A and the second access hole 64B. Examples of the adhesive 410 include adhesive tape or a gel-like member. The adhesive 410 is provided between the partition wall 63 and the first terminal block 91, and between the partition wall 63 and the second terminal block 92. Foreign matter is easily captured by the adhesive 410 before it passes through the through hole 63A. This prevents foreign matter from coming into contact with the substrate 24A. Furthermore, the adhesive 410 acts as a capturing member.

[0087] (Fifth embodiment) like Figure 9 As shown, in the fifth embodiment, the power supply device 30 is provided with a magnetic body 510 capable of capturing metallic foreign matter that enters through the first and second access holes 64A, 64B. The magnetic body 510 is disposed between the partition wall 63 and the first terminal block 91, and between the partition wall 63 and the second terminal block 92. Before metallic foreign matter passes through the through hole 63A, it is easily captured by the magnetic body 510. This prevents foreign matter from coming into contact with the substrate 24A. Furthermore, the magnetic body 510 acts as a capturing member.

[0088] (Sixth embodiment) like Figure 10 As shown, in the sixth embodiment, a first recess 611, which is recessed toward the bottom wall 61, is provided in the portion of the partition wall 63 that faces the first terminal block 91. A second recess 612, which is recessed toward the bottom wall 61, is provided in the portion of the partition wall 63 that faces the second terminal block 92. Foreign matter is easily captured by the first and second recesses 611, 612 before it passes through the through-hole 63A. This prevents foreign matter from coming into contact with the substrate 24A. Alternatively, the first and second recesses 611, 612 can be considered to constitute a capture structure 610 that captures foreign matter.

[0089] (Seventh embodiment) like Figure 11 As shown, in the seventh embodiment, a closing member 710 is provided in the power supply device 30 to close the through-hole 63A and pass the second positive electrode line 21B and the second negative electrode line 22B. The closing member 710 is formed, for example, with resin as the main component. For example, the second positive electrode line 21B and the second negative electrode line 22B are insert-molded in the closing member 710. Moreover, the closing member 710 is provided to close the through-hole 63A. The closing member 710 also serves as a wall separating the first space 60A and the second space 60B. The closing member 710 prevents foreign matter from moving back and forth between the first space 60A and the second space 60B. As a result, foreign matter that enters the interior through the inspection holes 64A and 64B can be prevented from coming into contact with the substrate 24A provided in the second space 60B.

[0090] (Eighth Embodiment) like Figure 12 As shown, in the eighth embodiment, a guide wall 810 capable of guiding foreign matter is provided on the partition wall 63. The guide wall 810 extends, for example, from the partition wall 63 toward the bottom wall 61. The substrate 24A is accommodated between the partition wall 63 and the guide wall 810 in the second space 60B. The guide wall 810 extends further toward the bottom wall 61 than the substrate 24A. Consequently, even if foreign matter passes through the through-hole 63A, it is guided to the bottom wall 61 via the guide wall 810, thereby preventing the foreign matter from coming into contact with the substrate 24A.

[0091] (Other embodiments) In the embodiments described so far, a configuration has been described in which the FrPCU connector 28F is provided on the first terminal block 91 and the RrPCU connector 28G is provided on the second terminal block 92. However, the FrPCU connector 28F may be provided on the first terminal block 91, while the RrPCU connector 28G may not be provided on the second terminal block 92. For example, the first load connector 28C may be provided on the first terminal block 91, while the second load connector 28D may be provided on the second terminal block 92. Furthermore, the supply connectors 28 provided on the first and second terminal blocks 91, 92 are not limited to this configuration and may be any combination.

[0092] (Disclosure of technical ideas) This specification discloses multiple technical ideas described in the following multiple items. Some items are sometimes described by selectively citing multiple dependent forms of previous items in subsequent items. Some items are sometimes described by citing multiple dependent forms of items in other multiple dependent forms (a multiple dependent form referring to another multiple dependent form). These items described in multiple dependent forms define multiple technical ideas.

[0093] (Technical Thought 1) A power supply device, comprising: A first terminal block (91) and a second terminal block (92); a substrate (24A) disposed at a position away from the first terminal block and the second terminal block in a direction perpendicular to the arrangement direction (DP) of the first terminal block and the second terminal block; and A frame (60) comprising: a bottom wall (61) for setting the substrate; a partition wall (63) on which the first terminal block and the second terminal block are set at a position farther away from the bottom wall than the substrate in the orthogonal direction; and a top wall (64) arranged at a position farther away from the partition wall than the first terminal block and the second terminal block in the orthogonal direction. A first inspection hole (64A) is provided on the top wall at a portion overlapping with the first terminal block in the orthogonal direction, penetrating in the orthogonal direction. A second inspection hole (64B) is provided on the top wall at a portion overlapping with the second terminal block in the orthogonal direction, penetrating in the orthogonal direction. A through hole (63A) is provided in the partition wall between the first inspection hole and the second inspection hole, which penetrates in the orthogonal direction and does not overlap with the first inspection hole and the second inspection hole in the orthogonal direction. A portion of the first terminal block is provided between the first access hole and the through hole, and a portion of the second terminal block is provided between the second access hole and the through hole.

[0094] (Technical Thought 2) The power supply device according to technical concept 1 further comprises: a first connector (28F), the first connector being provided on the first terminal block; and A second connector (28G), the second connector being provided on the second terminal block, The first terminal block includes: a first support portion (91A) supporting the first connector; and a first support wall (91B) protruding from the first support portion toward the top wall. The second terminal block includes: a second support portion (92A) supporting the second connector; and a second support wall (92B) protruding from the second support portion toward the top wall. The first support wall is provided between the first access hole and the through hole, and the second support wall is provided between the second access hole and the through hole.

[0095] (Technical Thought 3) The power supply device according to technical idea 1 or 2, wherein the power supply device further comprises: a first connecting wall (93A) and a second connecting wall (93B), wherein the first connecting wall and the second connecting wall are separated in a width direction (WD) orthogonal to the arrangement direction and the orthogonal direction, and connect the first terminal block and the second terminal block, The through hole is surrounded by the first support wall, the first connecting wall, the second support wall, and the second connecting wall.

[0096] (Technical Thought 4) The power supply device according to any one of technical concepts 1 to 3, wherein: In the above-mentioned orthogonal direction, the above-mentioned first inspection hole is provided in the projection area of ​​the above-mentioned first terminal block. The second inspection hole is provided in a projection area of ​​the second terminal block in the orthogonal direction.

[0097] (Technical Thought 5) The power supply device according to any one of technical concepts 1 to 4, wherein: It also includes a first conductive member (21B) and a second conductive member (22B) connected to the substrate, The first conductive member and the second conductive member extend through the through hole from the second space (60B) between the bottom wall and the partition wall toward the first space (60A) between the partition wall and the top wall.

[0098] (Technical Thought 6) According to the power supply device according to technical idea 5, the width of the through hole in the arrangement direction is narrow enough to allow the first conductive member and the second conductive member to pass therethrough.

[0099] (Technical Thought 7) The power supply device according to technical idea 5 or 6, wherein: The first connector is connected to the first motor (52). The second connector is connected to the second motor (54). The first conductive member is also connected to the first connector and the second connector. The second conductive member is further connected to the first connector and the second connector.

[0100] (Technical Thought 8) According to any one of technical ideas 1 to 7, a portion of the first terminal block and a portion of the second terminal block are arranged closer to the center side of the through hole than the inner surface (63B, 63C) of the through hole.

[0101] (Technical Thought 9) According to any one of technical ideas 1 to 8, the power supply device further includes a capture member (410, 510) capable of capturing foreign matter, or a capture structure (610) capable of capturing foreign matter, between the first terminal block and the second terminal block and the partition wall.

[0102] (Technical Thought 10) The power supply device according to any one of technical concepts 1 to 8 further comprises a closing member (710) for closing the through hole.

Claims

1. A power supply device, comprising: A first terminal block (91) and a second terminal block (92); a substrate (24A) arranged at a position away from the first terminal block and the second terminal block in a direction orthogonal to an arrangement direction (DP) in which the first terminal block and the second terminal block are arranged; as well as A frame (60), the frame having a bottom wall (61) for setting the substrate, a partition wall (63) and a top wall (64), the partition wall being provided with the first terminal block and the second terminal block at a position farther from the bottom wall than the substrate in the orthogonal direction, the top wall being provided at a position farther from the partition wall than the first terminal block and the second terminal block in the orthogonal direction, A first inspection hole (64A) penetrating in the orthogonal direction is provided at a portion of the top wall that overlaps with the first terminal block in the orthogonal direction. A second inspection hole (64B) penetrating in the orthogonal direction is provided at a portion of the top wall that overlaps with the second terminal block in the orthogonal direction. A through hole (63A) is provided in the partition wall between the first inspection hole and the second inspection hole, penetrating in the orthogonal direction and not overlapping with the first inspection hole and the second inspection hole in the orthogonal direction. A portion of the first terminal block is provided between the first access hole and the through hole, and a portion of the second terminal block is provided between the second access hole and the through hole.

2. The power supply device according to claim 1, characterized in that The power supply device further comprises: a first connector (28F), the first connector being disposed on the first terminal block; and a second connector (28G), the second connector being arranged on the second terminal block, The first terminal block includes: a first support portion (91A) that supports the first connector; and a first support wall (91B) that protrudes from the first support portion toward the top wall. The second terminal block includes: a second supporting portion (92A) supporting the second connector; and a second supporting wall (92B) protruding from the second supporting portion toward the top wall. The first support wall is provided between the first inspection hole and the through hole, and the second support wall is provided between the second inspection hole and the through hole.

3. The power supply device according to claim 2, characterized in that The device further includes a first connecting wall (93A) and a second connecting wall (93B), wherein the first connecting wall and the second connecting wall are separated in a width direction (WD) orthogonal to the arrangement direction and the orthogonal direction, and connect the first terminal block and the second terminal block. The through hole is surrounded by the first supporting wall, the first connecting wall, the second supporting wall, and the second connecting wall.

4. The power supply device according to any one of claims 1 to 3, characterized in that: In the orthogonal direction, the first inspection hole is provided in the projection area of ​​the first terminal block, In the orthogonal direction, the second inspection hole is provided in a projection area of ​​the second terminal block.

5. The power supply device according to claim 2 or 3, characterized in that: It also includes a first conductive member (21B) and a second conductive member (22B) connected to the substrate, The first conductive member and the second conductive member extend through the through hole from a second space (60B) between the bottom wall and the partition wall toward a first space (60A) between the partition wall and the top wall.

6. The power supply device according to claim 5, characterized in that The width of the through hole in the arrangement direction is narrow enough to allow the first conductive member and the second conductive member to pass therethrough.

7. The power supply device according to claim 5, characterized in that The first connector is connected to a first motor (52). The second connector is connected to a second motor (54). The first conductive member is also connected to the first connector and the second connector, The second conductive member is also connected to the first connector and the second connector.

8. The power supply device according to any one of claims 1 to 3, characterized in that: A portion of the first terminal block and a portion of the second terminal block are provided at positions closer to the center side of the through hole than the inner surface (63B, 63C) of the through hole.

9. The power supply device according to any one of claims 1 to 3, characterized in that: A capturing member (410, 510) capable of capturing foreign matter, or a capturing structure (610) capable of capturing foreign matter, is further included between the first terminal block, the second terminal block and the partition wall.

10. The power supply device according to any one of claims 1 to 3, characterized in that: Also included is a closing member (710) for closing the through hole.

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