Power supply unit and power supply system

Abstract

The power supply unit (20) includes: an electrical component (26); a first conductive member (23E, 23F) connected to the electrical component; a second conductive member (21D, 22D) that is different from the energization timing of the first conductive member; and a first partition wall (91) and a second partition wall (29) provided so as to be separated from each other in the arrangement direction in which the first conductive member and the second conductive member are arranged, the first conductive member and the second conductive member being provided between the first partition wall and the second partition wall. The purpose of the present invention is to simultaneously improve the degree of freedom in the arrangement of two conductive members and suppress the intrusion of noise from one conductive member into an electrical component connected to the other conductive member.

Description

Citation of related applications

[0001] This application is based on patent application No. 2022-094442 filed in Japan on June 10, 2022, and the contents of the basic application are cited as a whole by reference. Technical Field

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

[0003] Patent document 1 describes an engine control device, which includes: an injector wiring harness connected to an injector drive unit; a control wiring harness connecting an ECU and various sensors; and an intake manifold. The intake manifold has a shielding effect that suppresses electromagnetic noise generated from the injector wiring harness from entering the control wiring harness. The intake manifold is provided between the injector wiring harness and the control wiring harness. Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 11-343861 Summary of the invention

[0005] Since a member having a shielding effect is provided between the two harnesses, the degree of freedom in arranging the two harnesses is low. In addition, it is difficult to suppress the intrusion of noise from one harness into an electrical component connected to the other harness.

[0006] An object of the present disclosure is to provide a power supply unit and a power supply system that can simultaneously achieve an improvement in the degree of freedom in the arrangement of two conductive members and suppress the intrusion of noise from one conductive member to an electrical component connected to the other conductive member.

[0007] A power supply unit according to one embodiment of the present disclosure includes: Electrical components; a first conductive member connected to the electrical component; a second conductive member having a different energization timing from that of the first conductive member; and a first partition wall and a second partition wall provided separately in an arrangement direction in which the first conductive member and the second conductive member are arranged, A first conductive member and a second conductive member are provided between the first partition wall and the second partition wall.

[0008] Since the first conductive member and the second conductive member are energized at different times, it is possible to suppress the noise caused by the energization of the second conductive member from intruding into the electrical components. It is not necessary to provide a member between the first conductive member and the second conductive member to shield the noise propagating between the first conductive member and the second conductive member. In addition, between the first partition wall and the second partition wall, the degree of freedom of configuration of the first conductive member and the second conductive member is improved.

[0009] A power supply system according to one embodiment of the present disclosure includes a power supply unit and a switching device, wherein the power supply unit includes: Electrical components; a first conductive member connected to the electrical component; a second conductive member having a different energization timing from that of the first conductive member; and a first partition wall and a second partition wall provided separately in an arrangement direction in which the first conductive member and the second conductive member are arranged, The switching device switches the first conductive member and the second conductive member between an energized state and a non-energized state. A first conductive member and a second conductive member are provided between the first partition wall and the second partition wall.

[0010] The power supply system includes a power supply unit. Since the first conductive member and the second conductive member are energized at different times, it is possible to suppress the noise accompanying the energization of the second conductive member from intruding into the electrical component. Between the first partition wall and the second partition wall, the configuration freedom of the first conductive member and the second conductive member is improved.

[0011] 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

[0012] Figure 1 It is a block diagram of a power supply system and a power supply unit. Figure 2 This is a block diagram for explaining the timing of power-on. Figure 3 This is a flowchart for explaining control of the energization timing. Figure 4 It is a timing diagram at power-on time. Figure 5 It is a top view of the power supply unit. Figure 6 is a cross-sectional view of the power supply unit. Figure 7 It is a block diagram of a power supply system and a power supply unit. Figure 8This is a block diagram for explaining a method of controlling the power-on timing. Fig. 9 It is a block diagram of a power supply system and a power supply unit. Fig.10 is a cross-sectional view of the power supply unit. Fig.11 is a cross-sectional view of the power supply unit. DETAILED DESCRIPTION

[0013] Hereinafter, with reference to the accompanying drawings, a plurality of methods for implementing the present disclosure will be described. In each method, sometimes the same reference numerals are given to the parts corresponding to the matters described in the previous method, and repeated descriptions are omitted. In the case where only a part of the structure is described in each method, other methods previously described can be applied to other parts of the structure.

[0014] 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 obstacle to the combination.

[0015] (First Embodiment) based on Figure 1 to Figure 6 , the power supply system 1 and the power supply unit 20 of this embodiment are described. The power supply system 1 and the power supply unit 20 are applicable to electric vehicles such as electric vehicles and plug-in hybrid vehicles. In this embodiment, the power supply system 1 and the power supply unit 20 are applied to an electric vehicle as an example for description.

[0016] <Power supply system> like Figure 1 As shown, the power supply unit 20 is included in the power supply system 1 of the vehicle. In addition to the power supply unit 20, the power supply system 1 also includes a battery pack 10, a first vehicle load 30, a second vehicle load 40, a PCU 50, an MG 51, and an onboard ECU 52. A DC power supply 70 and an AC power supply 80 are externally connected to the power supply system 1. PCU is an abbreviation of a power control unit. MG is an abbreviation of a motor generator. ECU is an abbreviation of an electronic control unit.

[0017] In addition, in the drawings, the vehicle-mounted ECU 52 is abbreviated as "PCECU". In addition, in the drawings, for the sake of convenience of explanation, a configuration is shown in which the power supply system 1 includes one PCU 50 and one MG 51. However, the power supply system 1 may include a plurality of PCUs 50 and a plurality of MGs 51. For example, the power supply system 1 may include an FrPCU for driving and controlling the FrMG and an RrPCU for driving and controlling the RrMG.

[0018] As a power supply path, the battery pack 10 and the power supply unit 20 are electrically connected via a conductive member such as a wire harness and a bus bar. The first vehicle load 30 and the second vehicle load 40 are electrically connected to the power supply unit 20 via a conductive member. The PCU 50 is electrically connected to the power supply unit 20 via a conductive member. The MG 51 is electrically connected to the PCU 50 via a conductive member.

[0019] In the following description, the member referred to as a wire corresponds to a conductive member such as a wiring harness or a busbar. In addition, the PCU 50 includes an inverter or a converter for performing power conversion. The plurality of switches included in the inverter or the converter are controlled to be turned on and off by the vehicle-mounted ECU 52. The PCU 50 is controlled by the vehicle-mounted ECU 52.

[0020] The DC power output from the battery pack 10 is supplied to the first vehicle-mounted load 30, the second vehicle-mounted load 40 and the PCU 50 via the power supply unit 20. As described above, the PCU 50 includes an inverter or a converter for power conversion. The PCU 50 converts the supplied DC power into AC power. Conversely, the PCU 50 converts the supplied AC power into DC power. The MG 51 is an electric generator for vehicle travel for applying a propulsion force to the vehicle. The MG 51 is powered by the AC power supplied from the PCU 50.

[0021] The wheels rotate by the power operation of the MG 51. The MG 51 performs regenerative power generation by the propulsive force of the vehicle. The AC power generated by the regenerative power generation is converted into DC power in the PCU 50. The DC power is supplied to the first vehicle load 30 and the second vehicle load 40 via the power supply unit 20. The DC power is supplied to the battery pack 10 via the power supply unit 20.

[0022] In the following, for the sake of simplicity, the DC power supplied from the battery pack 10 is referred to as power supply power. The power generated by regenerative power generation and converted into DC power by the PCU 50 is referred to as regenerative power. The power supply unit 20 serves to supply the power supply power and regenerative power output in the vehicle to various electrical devices installed in the vehicle. In addition, the power supply unit 20 serves to supply the charging power supplied from the external power supply to various electrical devices installed in the vehicle. The components included in the battery pack 10 and the power supply unit 20 are described below.

[0023] <Battery Pack> The battery pack 10 includes a battery group 11, an SMR 12, a power supply relay 13, a battery ECU 14, and battery connectors 15A and 15B. The driving of the SMR 12 and the power supply relay 13 is controlled by the battery ECU 14. The output to the battery connectors 15A and 15B is controlled to be energized and cut off by the driving of the SMR 12 and the power supply relay 13. In addition, in the drawings, the battery ECU 14 is abbreviated as "BAECU".

[0024] The battery pack 11 has 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 is equivalent to the power supply voltage of the battery pack 11. As the battery cells included in the battery pack 11, for example, secondary batteries such as lithium-ion batteries can be used. One end of the first power line 10A is connected to the positive terminal of the battery cell with the highest potential among the plurality of battery cells connected in series. One end of the second power line 10B is connected to the negative terminal of the battery cell with the lowest potential. The other end of the first power line 10A and the other end of the second power line 10B are provided at the first battery connector 15A.

[0025] The first power line 10A and the second power line 10B are provided with SMR 12. The SMR 12 is a mechanical switching element. The SMR 12 is a switching element that switches between an on state and an off state by input of a drive signal output from the battery ECU 14. SMR is an abbreviation of System Main Relay.

[0026] 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 end of the third power line 10C and the other end of the fourth power line 10D are provided in the second battery connector 15B. The power relay 13 is provided in the third power line 10C and the fourth power line 10D. The power relay 13 is a mechanical switching element.

[0027] The power supply relay 13 is a switch element that switches between an on state and an off state by input of a drive signal output from the battery ECU 14. The battery ECU 14 communicates with the vehicle-mounted ECU 52 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 supply relay 13 based on the communication with the above ECUs.

[0028] 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. The other ends of the four power lines are electrically connected to and disconnected from the battery pack 11 by outputting and not outputting drive signals from the battery ECU 14 to the SMR 12 and the power relay 13. The other ends of the four power lines are connected to the power supply unit 20.

[0029] <Power supply unit> The power supply unit 20 includes DC relays 23A, 23B, a DCDC converter 24, an ACDC converter 25, a power supply ECU 26, and a distribution connector 28. The DC relays 23A, 23B are mechanical switches. The DC relays 23A, 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 DCDC converter 24 steps down the supplied power to 12V and supplies it to the second vehicle-mounted load 40. The ACDC converter 25 converts the AC power supplied from the AC power supply 80 into DC power. In addition, in the accompanying drawings, the power supply ECU 26 is referred to as a "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.

[0030] The power supply ECU 26 communicates with the vehicle-mounted ECU 52 or the battery ECU 14 via wiring (not shown). The power supply ECU 26 controls the driving of the DCDC converter 24, the DC relays 23A and 23B, and the ACDC converter 25 based on the communication with the ECU or the vehicle signal including the vehicle information input from the vehicle-mounted sensor (not shown), etc. The distribution connector 28 has a first power connector 28A, a second power connector 28B, a first load connector 28C, a second load connector 28D, a DC connector 28E, a PCU connector 28F, and an AC power connector 28G.

[0031] The first power connector 28A is provided with one end of the first power line 20A and the second power line 20B. The first battery connector 15A of the battery pack 10 is electrically connected to 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 cut off.

[0032] The first power line 20A is branched into a plurality of positive lines. Similarly, the second power line 20B is branched into a plurality of negative lines. The front ends of the plurality of positive lines are provided as the other end of the first power line 20A at the first load connector 28C, the second load connector 28D, the DC connector 28E, and the PCU connector 28F. The front ends of the plurality of negative lines are provided as the other end of the second power line 20B at the first load connector 28C, the second load connector 28D, the DC connector 28E, and the PCU connector 28F. In addition, DC relays 23A, 23B and a DCDC converter 24 are provided on the positive line and the negative line. The positive line and the negative line will be described in detail later.

[0033] The second power connector 28B is provided with one end of the third power line 20C and the fourth power line 20D. The second battery connector 15B of the battery pack 10 is electrically connected to 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 relay 13 of the battery pack 11 is in the on state, the third power line 20C and the fourth power line 20D are electrically connected to the battery pack 11. When the power relay 13 is in the off state, the electrical connection between the third power line 20C and the fourth power line 20D and the battery pack 11 is cut off.

[0034] The third power line 20C and the fourth power line 20D are provided with an ACDC converter 25. The other end of the third power line 20C and the other end of the fourth power line 20D are provided with an AC power supply connector 28G. The AC power supply 80 is connected to the AC power supply connector 28G from the outside. 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 ACDC converter 25.

[0035] <Positive and negative wires> like Figure 1As 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 21D. 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.

[0036] The front end of the first positive line 21A and the front end of the first negative line 22A are provided at the first load connector 28C. Thus, when the SMR 12 is in the on state, the battery pack 11 is electrically connected to the first vehicle-mounted load 30. The front end of the second positive line 21B and the front end of the second negative line 22B are provided at the second load connector 28D. The DCDC converter 24 is provided on the second positive line 21B and the second negative line 22B. Thus, when power is supplied to the DCDC converter 24, 12V DC power is supplied to the second vehicle-mounted load 40.

[0037] The front end of the third positive line 21C and the front end of the third negative line 22C are provided at the DC connector 28E. DC relays 23A and 23B are provided on 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 in the on state, the first vehicle-mounted load 30 and the DCDC converter 24 are electrically connected to the DC power supply 70. In addition, when the SMR 12 is in the on state, the battery pack 11 is electrically connected to the DC power supply 70.

[0038] In addition, the first communication line 23C for communicating with the power supply ECU 26 is connected to the first DC relay 23A. The power supply ECU 26 is electrically connected to the first DC relay 23A via the first communication line 23C. The second communication line 23D for communicating with the power supply ECU 26 is connected to the second DC relay 23B. The power supply ECU 26 is electrically connected to the second DC relay 23B via the second communication line 23D. Hereinafter, the first communication line 23C and the second communication line 23D are sometimes appropriately referred to as communication lines 23C, 23D.

[0039] In addition, a first monitoring line 23E is provided for monitoring whether a leakage occurs in the third positive line 21C. One end of the first monitoring line 23E is electrically connected to the third positive line 21C. The other end of the first monitoring line 23E is electrically connected to the power supply ECU 26. The power supply ECU 26 monitors whether a leakage occurs in the third positive line 21C via the first monitoring line 23E.

[0040] A second monitoring line 23F for monitoring whether the third negative line 22C has leakage is provided on the third negative line 22C. One end of the second monitoring line 23F is electrically connected to the third negative line 22C. The other end of the second monitoring line 23F is electrically connected to the power supply ECU 26. The power supply ECU 26 monitors whether the third negative line 22C has leakage via the second monitoring line 23F. Hereinafter, the first monitoring line 23E and the second monitoring line 23F are sometimes appropriately referred to as monitoring lines 23E and 23F. In addition, the monitoring lines 23E and 23F are equivalent to the first conductive member.

[0041] The front end of the fourth positive line 21D and the front end of the fourth negative line 22D are provided at the PCU connector 28F. Thus, the first vehicle-mounted load 30 and the DCDC converter 24 are electrically connected to the PCU 50. When the SMR 12 is in the on state, the battery pack 11 and the PCU 50 are electrically connected. In addition, the fourth positive line 21D and the fourth negative line 22D are also power lines for supplying power to drive the MG 51. Hereinafter, the fourth positive line 21D is sometimes referred to as the first drive line 21D. The fourth negative line 22D is sometimes referred to as the second drive line 22D. The first drive line 21D and the second drive line 22 are sometimes referred to as drive lines 21D, 22D together. In addition, the drive lines 21D, 22D are equivalent to the second conductive member.

[0042] <Operation of the Power Supply System> The DC power supply 70 or the AC power supply 80 is connected to the power supply unit 20 from the outside. In the case where the DC power supply 70 or the AC power supply 80 is, for example, a charger connected to a charging station, the power supply ECU 26 communicates with a CPU included in the charging station. Hereinafter, in the present embodiment, a case where power is supplied from the DC power supply 70 as a charger to the power supply unit 20 will be described in particular.

[0043] In normal situations such as when the vehicle is parked or driving normally, the battery ECU 14 turns the SMR 12 on. In addition, the battery ECU 14 turns the power relay 13 off. The power supply ECU 26 turns the DC relays 23A and 23B off. As a result, the power supply power of the battery pack 11 is supplied to the first vehicle-mounted load 30, the DCDC converter 24, and the PCU 50. Conversely, the regenerative power of the MG 510 is supplied to the first vehicle-mounted load 30, the DCDC converter 24, and the battery pack 11. At this time, the drive lines 21D and 22D are in an energized state. The monitoring lines 23E and 23F are in a non-energized state.

[0044] On the other hand, during DC charging when the DC power supply 70 is connected to the power supply unit 20 in the parking state, the battery ECU 14 turns the SMR 12 on. The battery ECU 14 turns the power supply relay 13 off. The power supply ECU 26 turns the DC relays 23A and 23B on. As a result, the DC power supplied from the DC power supply 70 is supplied to the battery pack 11, the first vehicle-mounted load 30, and the DCDC converter 24. At this time, the monitoring lines 23E and 23F are in an energized state. The drive lines 21D and 22D are in a non-energized state.

[0045] During DC charging, the drive lines 21D and 22D are in a non-energized state because the PCU 50 is in a disconnected state during DC charging. As described above, the power supply ECU 26 communicates with the vehicle-mounted ECU 52 or the battery ECU 14 via wiring (not shown). The vehicle-mounted ECU 52 includes a masking circuit 52A that turns the PCU 50 into a disconnected state. During DC charging, the power supply ECU 26 outputs an operation signal to the vehicle-mounted ECU 52 to operate the masking circuit 52A.

[0046] The vehicle-mounted ECU 52 activates the masking circuit 52A based on the operation signal. When the masking circuit 52A is activated, the PCU 50 is set to the disconnected state. The PCU 50 is set to the disconnected state by the masking circuit 52A. As a result, no potential difference is generated between the DC power supply 70 and the PCU 50. As a result, during DC charging, the drive lines 21D and 22D are in a non-energized state.

[0047] In addition, Figure 2 , the power-on time is simply indicated. When power is supplied from the DC power supply 70 to the power supply unit 20, as an example, the power supply ECU 26 outputs a connection signal to the DC relays 23A and 23B to turn on the DC relays 23A and 23B. At the same time, the power supply ECU 26 outputs an action signal to the masking circuit 52A to activate the masking circuit 52A. Thus, power is supplied from the external DC power supply 70 to the power supply unit 20. At this time, the monitoring lines 23E and 23F are in a power-on state. The drive lines 21D and 22D are in a non-power-on state. In addition, the connection signal and the action signal are equivalent to the switching signal. The DC relays 23A, 23B and the masking circuit 52A are equivalent to the switching device.

[0048] When the DC power supply 70 is removed from the power supply unit 20, the power supply ECU 26 does not output an on signal to the DC relays 23A and 23B. At the same time, the power supply ECU 26 does not output an action signal to the masking circuit 52A. When the DC power supply 70 is removed from the power supply unit 20, the monitoring lines 23E and 23F are set to a non-energized state. The drive lines 21D and 22D are set to an energized state.

[0049] Hereinafter, based on the functions included in the power supply ECU 26, a method for controlling the power-on timing of the monitoring lines 23E, 23F and the drive lines 21D, 22D will be described. The power supply ECU 26 includes a processing device such as a CPU, a memory device such as a ROM, and a RAM. The power supply ECU 26 performs various controls by executing a program stored in the ROM by the CPU. As functions, the CPU includes a judgment unit 26A and a signal output unit 26B. Functions are also called functional blocks. The program can also be said to include the functions of the judgment unit 26A and the signal output unit 26B. In the accompanying drawings, the judgment unit 26A is referred to as "JDP". The signal output unit 26B is referred to as "STP".

[0050] In addition, the means and / or functions provided by the power supply ECU 26 can be provided by software recorded in a physical memory device and a computer that executes the software, software only, hardware only, or a combination thereof. For example, in the case where the power supply ECU 26 is provided by an electronic circuit as hardware, it can be provided by a digital circuit or an analog circuit including a plurality of logic circuits.

[0051] The power supply ECU 26 has a switching control routine for controlling the switching of the energization timing of the monitoring lines 23E, 23F and the driving lines 21D, 22D. The power supply ECU 26 repeatedly performs the switching control routine every time a predetermined time has passed. The power supply ECU 26 repeatedly performs the switching control routine every time a predetermined time has passed.

[0052] exist Figure 3 In the switching control flow shown, in step S110, the determination unit 26A determines whether the monitoring lines 23E and 23F are powered. In step S110, the determination unit 26A communicates with the CPU included in the DC power supply 70. Based on the result of the communication, it is determined whether the DC power supply 70 is connected. Based on this, the determination unit 26A determines whether the monitoring lines 23E and 23F are powered. When the determination unit 26A determines that the monitoring lines 23E and 23F are powered in step S110, the process proceeds to step S121.

[0053] In step S121, the signal output unit 26B outputs a connection signal to the DC relays 23A and 23B. Next, in step S122, an action signal is output to the masking circuit 52A. Then, the process proceeds to the end. At this time, the monitoring lines 23E and 23F are in an energized state. The driving lines 21D and 22D are in a non-energized state. In addition, the connection signal and the action signal may be output simultaneously. The connection signal and the action signal may also be output sequentially.

[0054] When the determination unit 26A determines in step S110 that the monitoring lines 23E and 23F are not energized, the process proceeds to step S131. In step S131, the signal output unit 26B does not output a connection signal to the DC relays 23A and 23B. Next, in step S132, the action signal is not output to the masking circuit 52A. The process then proceeds to the end. At this time, the monitoring lines 23E and 23F are in a non-energized state. The drive lines 21D and 22D are in an energized state. In addition, the non-output of the connection signal and the non-output of the action signal can also be performed simultaneously. The non-output of the connection signal and the non-output of the action signal can also be performed sequentially.

[0055] Next, based on Figure 4 The timing chart shown in the figure illustrates the switching time of the power supply of the monitoring lines 23E, 23F and the driving lines 21D, 22D. In the timing chart, in the interval from time t1 to time t2, the vehicle is in the parking state or the driving state. In the interval from time t2 to time t3, the vehicle is in the parking state and also in the charging state. At time t2, the DC power supply 70 is connected to the DC connector 28E. During the period from time t1 to time t2, the power supply ECU 26 executes steps S131 and S132. When the power supply of the monitoring lines 23E, 23F and the driving lines 21D, 22D is switched at time t2, the power supply ECU 26 executes steps S121 and S122 during the period from time t2 to time t3. As a result, the monitoring lines 23E, 23F and the driving lines 21D, 22D are not in the power supply state at the same time. The timing of energizing the monitoring lines 23E and 23F is different from the timing of energizing the driving lines 21D and 22D.

[0056] <Mechanical structure of power supply unit> When describing the components included in the power supply unit 20, the thickness direction of the substrate 27 described later is sometimes referred to as the TD direction (thickness direction). The depth direction of the two directions orthogonal to the thickness direction of the substrate 27 is sometimes referred to as the DP direction (depth direction), and the width direction is sometimes referred to as the WD direction (width direction). The DP direction and the WD direction correspond to the extension directions of the surface 27A and the back surface 27B of the substrate 27. The DP direction corresponds to the first orthogonal direction. The WD direction corresponds to the second orthogonal direction.

[0057] In addition to the components described so far, the power supply unit 20 also includes a substrate 27, an electromagnetic shielding member 29, a housing 60, and a terminal block 90. ​​The substrate 27 includes a power supply ECU 26 and electrical wiring electrically connected to the power supply ECU 26. The substrate 27 is in a flat shape with a relatively thin thickness in the TD direction. The substrate 27 includes a surface 27A and a back surface 27B configured to be separated by its thickness in the TD direction. The power supply ECU 26 and the electrical wiring are provided on the surface 27A. The electromagnetic shielding member 29 is a shielding member for suppressing noise from intruding into electrical components, etc. In the present embodiment, the electromagnetic shielding member 29 is provided on the back surface 27B side of the substrate 27. In addition, the storage form of the various components in the housing 60 will be described later.

[0058] The housing 60 is used to store the components included in the battery pack 10 and the power supply unit 20. The housing 60 is mainly composed of metal such as aluminum. Figure 5 As shown, the housing 60 includes an annular side wall 62 that is open in the TD direction. The components included in the battery pack 10 and the power supply unit 20 are accommodated in the space surrounded by the side wall 62.

[0059] The side wall 62 includes a first wall portion 62A and a third wall portion 62C that are separated in the WD direction and a second wall portion 62B and a fourth wall portion 62D that are separated in the DP direction. The first wall portion 62A to the fourth wall portion 62D are continuous in the clockwise direction.

[0060] In addition, a partition wall 63 is provided on the side wall 62 to divide the space in the TD direction. The partition wall 63 is continuous with the side wall 62 through the same member. The space inside the housing 60 is divided into a first space and a second space by the partition wall 63. The power supply unit 20 is accommodated in the first space. The battery pack 10 is accommodated in the second space. In addition, in the top view orthogonal to the WD direction, the structure when the power supply unit 20 is observed from the first space side is shown. In the top view, the description of the DCDC converter 24, the ACDC converter 25, and the conductive components and connectors connecting them are omitted.

[0061] A DC connector 28E is provided on the first wall portion 62A. A first power connector 28A and a PCU connector 28F 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. In the WD direction, the DC connector 28E and the first power connector 28A are provided on the side wall 62 in a manner facing each other. The PCU connector 28F is provided on the second wall portion 62B side of the third wall portion 62C. On the third wall portion 62C, the PCU connector 28F is provided at a position closer to the second wall portion 62B side than the first power connector 28A.

[0062] The third positive line 21C and the third negative line 22C extend from the DC connector 28E to the first power connector 28A. The ends of the third positive line 21C and the third negative line 22C on the DC connector 28E side are connected to the DC connector 28E. The first power line 20A and the second power line 20B extend from the first power connector 28A to the DC connector 28E. The ends of the first power line 20A and the second power line 20B on the first power connector 28A side are connected to the first power connector 28A.

[0063] A first DC relay 23A is provided between the end of the third positive line 21C on the first power connector 28A side and the end of the first power line 20A on the DC connector 28E side. A second DC relay 23B is provided between the end of the third negative line 22C on the first power connector 28A side and the end of the second power line 20B on the DC connector 28E side.

[0064] In addition, the first power line 20A extends toward the second wall portion 62B halfway from the first power connector 28A to the DC connector 28E. The second power line 20B extends toward the second wall portion 62B halfway from the first power connector 28A to the DC connector 28E. Hereinafter, for convenience of description, the front end of the portion of the first power line 20A extending toward the second wall portion 62B is referred to as the first front end portion. The front end of the portion of the second power line 20B extending toward the second wall portion 62B is referred to as the second front end portion.

[0065] As described above, the PCU connector 28F is provided on the second wall portion 62B side of the third wall portion 62C. The fourth positive line 21D extends from the PCU connector 28F to the first front end portion. The fourth positive line 21D extends along the WD direction. It can also be said that the fourth positive line 21D extends from the third wall portion 62C to the first wall portion 62A. The end of the fourth positive line 21D on the first front end portion side is connected to the first front end portion. The end of the fourth positive line 21D on the PCU connector 28F side is connected to the PCU connector 28F.

[0066] The fourth negative line 22D extends from the PCU connector 28F to the second front end portion. The fourth negative line 22D extends along the WD direction. The fourth negative line 22D can also be said to extend from the third wall portion 62C to the first wall portion 62A. The end of the fourth negative line 22D on the second front end portion side is connected to the second front end portion. The end of the fourth negative line 22D on the PCU connector 28F side is connected to the PCU connector 28F.

[0067] The PCU connector 28F, the fourth positive line 21D, and the fourth negative line 22D are provided on a terminal block 90. ​​The terminal block 90 is supported by the case 60. The terminal block 90 supports the fourth positive line 21D and the fourth negative line 22D, and also supports the PCU connector 28F. The terminal block 90 is composed mainly of resin or the like.

[0068] like Figure 6 As shown, the terminal block 90 includes a support portion 91, a first support wall portion 92, and a second support wall portion 93. The first support wall portion 92 and the second support wall portion 93 are provided on the upper surface 91A of the support portion 91. The first support wall portion 92 and the second support wall portion 93 are provided to face each other at a position separated by a predetermined distance in the DP direction. A fourth positive line 21D and a fourth negative line 22D are provided between the first support wall portion 92 and the second support wall portion 93 of the terminal block 90.

[0069] In addition, the substrate 27 is provided in the space on the second wall portion 62B side of the third positive line 21C and the third negative line 22C in the first space. As described above, the electromagnetic shield 29 is provided on the back surface 27B side of the substrate 27. The electromagnetic shield 29 is a shielding member for suppressing noise from entering the drive lines 21D, 22D and the monitoring lines 23E, 23F from the outside.

[0070] The electromagnetic shield 29 has a shape along the substrate 27. In a plan view, the electromagnetic shield 29 is slightly larger than the substrate 27. In the WD direction, the electromagnetic shield 29 overlaps with the substrate 27. In the WD direction, the electromagnetic shield 29 overlaps with a portion of the terminal block 90, a portion of the drive lines 21D and 22D, and a portion of the monitoring lines 23E and 23F.

[0071] In addition, a communication plug 27C connected to the power supply ECU 26 is provided on the surface 27A of the substrate 27. A first communication line 23C extends from the communication plug 27 to the first DC relay 23A. A second communication line 23C extends from the communication plug 27 to the second DC relay 23B. The communication plug 27C is connected to the DC relays 23A and 23B via the communication lines 23C and 23D.

[0072] A monitoring plug 27D connected to the power supply ECU 26 is provided on the surface 27A of the substrate 27. A first monitoring line 23E extends from the monitoring plug 27D to the third positive line 21C. A second monitoring line 23F extends from the monitoring plug 27D to the third negative line 22C. The monitoring plug 27D is connected to the third positive line 21C and the third negative line 22C via the monitoring lines 23E and 23F.

[0073] The monitoring wires 23E and 23F extend from the monitoring plug 27D to the third wall portion 62C and then extend toward the fourth wall portion 62D. The monitoring wires 23E and 23F cross the electromagnetic shielding member 29 halfway along the extension to the fourth wall portion 62D. In the WD direction, the monitoring wires 23E and 23F are provided at a position closer to the partition wall 63 than the electromagnetic shielding member 29. The monitoring wires 23E and 23F overlap with the electromagnetic shielding member 29 in the WD direction.

[0074] Further, the portion of the monitoring wires 23E and 23F that overlaps with the electromagnetic shielding member 29 in the WD direction overlaps with the driving wires 21D and 22D and the terminal block 90 on the partition wall 63 side. From the partition wall 63 toward the substrate 27, the support portion 91, the driving wires 21D and 22D, the monitoring wires 23E and 23F, and the electromagnetic shielding member 29 are overlapped in this order. In addition, the extending direction of the driving wires 21D and 22D differs from the extending direction of the monitoring wires 23E and 23F by 90 degrees. When viewed from above, the driving wires 21D and 22D are orthogonal to the monitoring wires 23E and 23F.

[0075] In the TD direction, the driving wires 21D, 22D and the monitoring wires 23E, 23F are arranged between the support portion 91 and the electromagnetic shielding member 29. The driving wires 21D, 22D and the monitoring wires 23E, 23F are arranged between the first support wall portion 92 and the second support wall portion 93. As an example, a notch is provided on the first support wall portion 92 and the second support wall portion 93 so that the monitoring wires 23E, 23F pass through. The monitoring wires 23E, 23F pass through the notch. The driving wires 21D, 22D and the monitoring wires 23E, 23F are arranged in the space formed by the support portion 91, the first support wall portion 92, the second support wall portion 93 and the electromagnetic shielding member 29. In addition, the support portion 91 is equivalent to the first partition wall. The electromagnetic shielding member 29 is equivalent to the second partition wall.

[0076] In addition, the monitoring lines 23E and 23F extend from the second wall portion 62B to the fourth wall portion 62D, and then extend from the third wall portion 62C to the first wall portion 62A. Then, the monitoring lines 23E and 23F extend toward the third positive line 21C and the third negative line 22C. The first monitoring line 23E is connected to the third positive line 21C via a conductive connecting member or the like. The second monitoring line 23F is connected to the third negative line 22C via a conductive connecting member or the like.

[0077] <Effects> As described above, the drive wires 21D and 22D and the monitoring wires 23E and 23F are provided between the support portion 91 and the electromagnetic shielding member 29. The monitoring wires 23E and 23F are wires connected to the power supply ECU 26 as an electrical component. The drive wires 21D and 22D are wires connected to the PCU 50 as an electrical component. The monitoring wires 23E and 23F are energized at different times from the drive wires 21D and 22D.

[0078] Since the energization timing of the monitoring lines 23E and 23F is different from the energization timing of the driving lines 21D and 22D, it is possible to suppress the noise generated by the energization of the driving lines 21D and 22D from intruding into the power supply ECU 26. Accordingly, it is not necessary to provide a member between the monitoring lines 23E and 23F and the driving lines 21D and 22D to shield the noise propagating between the lines. The degree of freedom of arrangement of the monitoring lines 23E and 23F and the driving lines 21D and 22D between the electromagnetic shielding member 29 and the support portion 91 is improved.

[0079] As described so far, the monitoring lines 23E and 23F are electrically connected to the power supply ECU 26. The drive lines 21D and 22D are electrically connected to the PCU 50 connected to the MG 51. The energization timing of the monitoring lines 23E and 23F is different from the energization timing of the drive lines 21D and 22D. When the drive lines 21D and 22D are in the energized state, the noise is suppressed from intruding from the drive lines 21D and 22D to the power supply ECU 26 connected to the monitoring lines 23E and 23F. The occurrence of malfunction in the power supply ECU 26 is suppressed.

[0080] As described so far, the power supply ECU 26 outputs a connection signal to the DC relays 23A and 23B, and outputs an action signal to the masking circuit 52A. As a result, the monitoring lines 23E and 23F are in an energized state. The drive lines 21D and 22D are in a non-energized state. In addition, the power supply ECU 26 does not output a connection signal to the DC relays 23A and 23B, and does not output an action signal to the masking circuit 52A. As a result, the monitoring lines 23E and 23F are in a non-energized state. The drive lines 21D and 22D are in an energized state. As a result, the monitoring lines 23E and 23F and the drive lines 21D and 22D are suppressed from being in an energized state at the same time.

[0081] As described above, the power supply ECU 26 includes a determination unit 26A and a signal output unit 26B. The determination unit 26A determines whether the monitoring lines 23E and 23F are energized. The determination unit 26A communicates with the CPU included in the DC power supply 70. Based on the result of the communication, it is determined whether the DC power supply 70 is connected. Based on this, the determination unit 26A determines whether the monitoring lines 23E and 23F are energized.

[0082] When the determination unit 26A determines that the monitoring lines 23E and 23F are energized, the signal output unit 26B outputs a connection signal to the DC relays 23A and 23B, and outputs an action signal to the masking circuit 52A. As a result, the monitoring lines 23E and 23F are energized, and the drive lines 21D and 22D are de-energized. When the determination unit 26A determines that the monitoring lines 23E and 23F are not energized, the signal output unit 26B does not output a connection signal to the DC relays 23A and 23B, and does not output an action signal to the masking circuit 52A. As a result, the monitoring lines 23E and 23F are de-energized, and the drive lines 21D and 22D are energized.

[0083] (Second Embodiment) In a second embodiment, if Figure 7As shown, the power supply unit 20 includes a first switch 21E and a second switch 22E for controlling the power supply to the PCU 50. The first switch 21E is provided on the first drive line 21D. The second switch 22E is provided on the second drive line 22D. In the second embodiment, the masking circuit 52A is not installed in the vehicle-mounted ECU 52. In addition, the masking circuit 52A may also be installed in the vehicle-mounted ECU 52. In addition, the DC relays 23A, 23B and the switches 21E, 22E are equivalent to switching devices.

[0084] like Figure 8 As shown in FIG. 1 , when power is supplied from the external DC power supply 70 to the power supply unit 20, the power supply ECU 26 outputs an on signal to the DC relays 23A and 23B to turn on the DC relays 23A and 23B. At the same time, the power supply ECU 26 does not output an on signal to the switch 21E and 22E, and turns the switch 21E and 22E to the off state. As a result, the monitoring lines 23E and 23F are turned on. The drive lines 21D and 22D are turned off.

[0085] When the DC power supply 70 is removed from the power supply unit 20, the power supply ECU 26 does not output an on signal to the DC relays 23A and 23B, thereby setting the DC relays 23A and 23B to the off state. At the same time, the power supply ECU 26 outputs an on signal to the switch 21E and 22E to set the switch 21E and 22E to the on state. As a result, the monitoring lines 23E and 23F are turned off. The drive lines 21D and 22D are turned on.

[0086] (Third Embodiment) In a third embodiment, if Fig. 9 As shown, a related signal generating device 20E is provided in the power supply unit 20. The related signal generating device 20E is associated with the energization state of one of the monitoring lines 23E, 23F and the driving lines 21D, 22D. When one of these lines is in the energized state, the related signal generating device 20E outputs a related signal to the power supply ECU 26. The power supply ECU 26 sets the other of these lines to the non-energized state based on the received related signal.

[0087] As the correlation signal generating device 20E, there can be cited a correlation signal generating unit, a timer, a temperature sensor, etc. In addition, the correlation signal generating device 20E may be included in the power supply ECU 26, or may not be included in the power supply ECU 26. In addition, in the drawings, the correlation signal generating device 20E is abbreviated as "RSG".

[0088] As an example, the correlation signal generating unit of the third embodiment has the following functions: it determines whether the monitoring lines 23E and 23F are powered on, and when it is determined that the monitoring lines 23E and 23F are powered on, a correlation signal is generated and output to the signal output unit 26B. Based on the received correlation signal, the signal output unit 26B sets the driving lines 21D and 22D to a non-powered state. As a result, the monitoring lines 23E and 23F and the driving lines 21D and 22D are not powered on at the same time. In addition, when it is determined that the monitoring lines 23E and 23F are not powered on, the correlation signal generating unit performs the opposite control.

[0089] In addition, the related signal generating unit may also include the following function: judging whether the driving lines 21D and 22D are energized, and outputting the related signal to the signal output unit 26B when judging that the driving lines 21D and 2D are energized. In this case, the signal output unit 26B sets the monitoring lines 23E and 23F to a non-energized state based on receiving the related signal. Thus, the monitoring lines 23E and 23F and the driving lines 21D and 22D are not in an energized state at the same time. In addition, the related signal generating unit performs the opposite control when judging that the driving lines 21D and 22D are not energized.

[0090] In the temperature sensor, as an example, it is judged whether the temperature of one of the monitoring lines 23E, 23F and the driving lines 21D, 22D is above a preset threshold value. And, when it is judged to be above the threshold value, a relevant signal is output to the signal output unit 26B. In addition, the signal output unit 26B sets the other of the monitoring lines 23E, 23F and the driving lines 21D, 22D to a non-energized state based on the received relevant signal. As a result, the monitoring lines 23E, 23F and the driving lines 21D, 22D are not in an energized state at the same time. In addition, the temperature sensor can also be set in the DC relays 23A, 23B. The temperature sensor can also be set in the monitoring lines 23E, 23F or the driving lines 21D, 22D.

[0091] In the time-controlled timer, as an example, it is judged whether one of the monitoring lines 23E, 23F and the driving lines 21D, 22D has been energized for a time period longer than a preset specified time period. And, when it is judged that the power has been energized for more than the specified time period, a relevant signal is output to the signal output unit 26B. In addition, based on the received relevant signal, the signal output unit 26B sets the other of the monitoring lines 23E, 23F and the driving lines 21D, 22D to a non-energized state. As a result, the monitoring lines 23E, 23F and the driving lines 21D, 22D will not be in an energized state at the same time. In addition, the time-controlled timer can also be set in the DC relays 23A, 23B. The time-controlled timer can also be set in the monitoring lines 23E, 23F or the driving lines 21D, 22D.

[0092] (Fourth Embodiment) In a fourth embodiment, if Fig.10 As shown, the electromagnetic shielding member 29 is provided at a position closer to the support portion 91 than the end portions of the support wall portions 92 and 93 in the TD direction. In addition, the electromagnetic shielding member 29 is provided between the first support wall portion 92 and the second support wall portion 93 in the DP direction. The monitoring lines 23E and 23F and the driving lines 21D and 22D are provided between the electromagnetic shielding member 29 and the terminal block 90. ​​Thus, the same effect can be achieved. In addition, the increase in the size in the TD direction can be suppressed. The degree of freedom in the layout of the components constituting the power supply unit 20 is improved. In addition, even if the terminal block 90 is replaced with a metal housing 60 or the like, it can be said to be the same. In this case, the housing 60 includes a bottom wall 61 and a side wall 62. The side wall 62 is continuously provided on the surface of the bottom 61 with the same material. The electromagnetic shielding member 29 is provided at a position closer to the bottom wall 61 than the end portions of the side wall 62 in the TD direction. In addition, the electromagnetic shielding member 29 is provided between the two side walls 62 in the DP direction. The monitoring lines 23E and 23F and the driving lines 21D and 22D are provided between the electromagnetic shield 29 and the housing 60. This also provides the same effect. In the drawings, the result of applying the terminal block 90 is shown as a representative example.

[0093] (Fifth Embodiment) In a fifth embodiment, if Fig.11 As shown, another support platform 94 is provided in the space between the support portion 91 and the support wall portions 92 and 93. The support platform 94 includes an opening in the TD direction, and the electromagnetic shielding member 29 is provided on the support platform 94 in a manner that blocks the opening. In addition, monitoring lines 23E, 23F and driving lines 21D, 22D are provided in the space between the support platform 94 and the electromagnetic shielding member 29. Thus, the same effect can be achieved. Compared with the fourth embodiment, the increase in size can be further suppressed. The degree of freedom of layout of the components constituting the power supply unit 20 is improved. In addition, as in the fourth embodiment, even if the terminal block 90 is replaced with a housing 60, etc., it can be said to be the same. In the accompanying drawings, a structure using the terminal block 90 is represented and illustrated.

[0094] Although the present disclosure is described based on the embodiments, it should be understood that the present disclosure is not limited to the above-mentioned embodiments and structures. The present disclosure also includes various modifications and modifications within the equivalent range. In addition, various combinations and methods, further including only a single element, other combinations and methods above or below on this basis also belong to the scope and thought range of the present disclosure.

[0095] (Disclosure of technical ideas) This specification discloses multiple technical ideas recorded in the following multiple items. Some items are sometimes recorded by selectively citing a multiple dependent form of a previous item in a subsequent item. Some items are sometimes recorded by citing a multiple dependent form of an item in another multiple dependent form (a multiple dependent form referring to another multiple dependent form). These items recorded in multiple dependent forms define multiple technical ideas.

[0096] (Technical Thought 1) A power supply unit, comprising: Electrical components (26); a first conductive member (23E, 23F) connected to the electrical component; a second conductive member (21D, 22D) having a different energization timing from that of the first conductive member; and a first partition wall (91) and a second partition wall (92) which are separately arranged in an arrangement direction in which the first conductive member and the second conductive member are arranged; The first conductive member and the second conductive member are provided between the first partition wall and the second partition wall.

[0097] (Technical Thought 2) In the power supply unit according to technical idea 1, the electrical component controls switching between a conducting state and a non-conducting state of the first conductive member and the second conductive member.

[0098] (Technical Thought 3) According to the power supply unit described in technical concept 2, the electrical component controls the switching of the energized state and the non-energized state of the first conductive component and the second conductive component by outputting and not outputting a switching signal to a switching device (21E, 22E, 23A, 23B, 52A).

[0099] (Technical Thought 4) A power supply unit according to technical idea 3, wherein the electrical component outputs or does not output the switching signal when the power-on state of one of the first conductive component and the second conductive component is detected, or outputs or does not output the switching signal when a signal related to the power-on state of one of the first conductive component and the second conductive component is received.

[0100] (Technical Thought 5) The power supply unit according to technical idea 3 or 4, wherein the electrical component comprises: a judgment unit (26A) that judges whether the first conductive member is in a power-on state; and A signal output unit (26B) controls output or non-output of the switching signal based on the determination of the determination unit.

[0101] (Technical Thought 6) The power supply unit according to technical idea 3 or 4, wherein the power supply unit further comprises a correlation signal generating device (20E), wherein the correlation signal generating device generates a correlation signal associated with the energization state of the first conductive member, The electrical component includes a signal output unit (26B) that acquires the relevant signal and controls output or non-output of the switching signal based on the acquired relevant signal.

[0102] (Technical Thought 7) The power supply unit according to any one of technical concepts 1 to 6, wherein the power supply unit is installed in a chargeable vehicle, During charging, the first conductive member is in a powered state and the second conductive member is in a non-powered state. During driving, the first conductive member is in a non-conductive state and the second conductive member is in a conductive state.

[0103] (Technical Thought 8) The power supply unit according to any one of technical concepts 1 to 7, wherein the first partition wall is a part of a terminal block (90), The second partition wall is an electromagnetic shield.

[0104] (Technical Thought 9) A power supply system, comprising: Electrical components (26); a first conductive member (23E, 23F) connected to the electrical component; a second conductive member (21D, 22D) having a different energization timing from that of the first conductive member; a power supply unit (20) having a first partition wall (91) and a second partition wall (92) which are separately provided in an arrangement direction in which the first conductive member and the second conductive member are arranged; and a switching device (21E, 22E, 23A, 23B, 52A) for switching between an energized state and a non-energized state of the first conductive member and the second conductive member, The first conductive member and the second conductive member are provided between the first partition wall and the second partition wall.

[0105] (Technical Thought 10) According to the power supply system of technical concept 9, the first conductive member is connected to the electrical component and is also connected to a charger (70) capable of communicating with the electrical component. The electrical component determines whether the first conductive member is in a current-carrying state based on communication with the charger.

Claims

1. A power supply unit, comprising: Electrical components (26); a first conductive member (23E, 23F) connected to the electrical component; a second conductive member (21D, 22D) having a different energization timing from that of the first conductive member; as well as a first partition wall (91) and a second partition wall (92) which are separately arranged in an arrangement direction in which the first conductive member and the second conductive member are arranged; The first conductive member and the second conductive member are provided between the first partition wall and the second partition wall.

2. The power supply unit according to claim 1, characterized in that The electrical component controls switching between a conducting state and a non-conducting state of the first conductive member and the second conductive member.

3. The power supply unit according to claim 2, characterized in that: The electrical component controls switching between the energized state and the non-energized state of the first conductive member and the second conductive member by outputting and not outputting a switching signal to a switching device (21E, 22E, 23A, 23B, 52A).

4. The power supply unit according to claim 3, characterized in that: The electrical component outputs or does not output the switching signal when detecting the power-on state of one of the first conductive component and the second conductive component, or outputs or does not output the switching signal when receiving a signal related to the power-on state of one of the first conductive component and the second conductive component.

5. The power supply unit according to claim 3 or 4, characterized in that: The electrical components include: a judging section (26A) for judging whether the first conductive member is in a powered state; and A signal output unit (26B) controls output or non-output of the switching signal based on the determination of the determination unit.

6. The power supply unit according to claim 3 or 4, characterized in that: The power supply unit further includes a correlation signal generating device (20E) that generates a correlation signal associated with the energization state of the first conductive member. The electrical component includes a signal output unit (26B) that acquires the relevant signal and controls output or non-output of the switching signal based on the acquired relevant signal.

7. The power supply unit according to any one of claims 1 to 4, characterized in that: The power supply unit is installed in a rechargeable vehicle. During charging, the first conductive member is in a powered state and the second conductive member is in a non-powered state. During driving, the first conductive member is in a non-conductive state and the second conductive member is in a conductive state.

8. The power supply unit according to any one of claims 1 to 4, characterized in that: The first partition wall is a part of the terminal block (90), The second partition wall is an electromagnetic shield.

9. A power supply system comprising: A power supply unit (20) and a switching device (21E, 22E, 23A, 23B, 52A), The power supply unit comprises: Electrical components (26); a first conductive member (23E, 23F) connected to the electrical component; a second conductive member (21D, 22D) having a different energization timing from that of the first conductive member; and a first partition wall (91) and a second partition wall (92) which are separately arranged in an arrangement direction in which the first conductive member and the second conductive member are arranged; The switching device switches the first conductive member and the second conductive member between an energized state and a non-energized state. The first conductive member and the second conductive member are provided between the first partition wall and the second partition wall.

10. The power supply system according to claim 9, characterized in that: In addition to being connected to the electrical component, the first conductive member is also connected to a charger (70) capable of communicating with the electrical component. The electrical component determines whether the first conductive member is in a current-carrying state based on communication with the charger.

Images