Electronic equipment module and power supply system

Abstract

To reduce man-hours for connecting between a battery pack and a plurality of power conversion units.SOLUTION: An electronic equipment module 13 is provided which is connected to a battery pack 12 having a high-voltage battery 20, the electronic equipment module 13 has: a conductive path electrically connected to the battery pack 12; a bifurcation 37 electrically connected to the conductive path; a plurality of branch paths 60 electrically connected to the bifurcation 37; a circuit board 38 electrically connected to at least one of the plurality of branch paths 60; and a plurality of branch connectors 42 electrically connected to the plurality of branch paths 60. The circuit board 38 has a plurality of power conversion units 56 that convert power.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an electronic device module and a power supply system. [Background technology]

[0002] Conventionally, a power supply system that is mounted on vehicles such as electric vehicles and hybrid vehicles and distributes and controls electric power is disclosed in JP 2008-30722 A. The power supply system includes a battery device. A DC / DC converter and an auxiliary battery are connected to the battery device. Although not shown in detail, the battery device is electrically connected to a DC charging connector for rapid charging the battery device, an AC charging connector for charging from a household power source with a voltage of 100V, an AC output connector for supplying AC with a voltage of 100V inside the vehicle, and a plurality of electrical devices mounted on the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-30722 A Summary of the Invention [Problem to be solved by the invention]

[0004] Recently, as vehicles have become more sophisticated, the number of electrical devices mounted on the vehicles has increased, which increases the number of steps required to connect the battery device to the electrical devices.

[0005] The present disclosure has been completed in light of the above circumstances, and has an object to provide an electronic device module and a power supply system that can reduce the number of connection steps. [Means for solving the problem]

[0006] The present disclosure relates to an electronic device module that is connected to a battery pack having a high-voltage battery, the electronic device module having a conductive path electrically connected to the battery pack, a branch section electrically connected to the conductive path, a plurality of branch paths electrically connected to the branch section, a circuit board electrically connected to at least one of the plurality of branch paths, and a plurality of branch connectors electrically connected to the plurality of branch paths, the circuit board having a plurality of power conversion sections that convert power. Effect of the Invention

[0007] According to the present disclosure, it is possible to reduce the number of steps required to connect a battery pack to a plurality of power conversion units in an electronic device module and a power supply system. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a vehicle according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a block diagram showing the configuration of the power supply system. [Diagram 3] FIG. 3 is a partially enlarged cross-sectional view showing the power connector and the device connector. [Figure 4] FIG. 4 is a block diagram showing a power supply system according to the second embodiment of the present disclosure. [Diagram 5] FIG. 5 is a block diagram showing a power supply system according to a third embodiment of the present disclosure. [Figure 6] FIG. 6 is a block diagram showing a power supply system according to a fourth embodiment of the present disclosure. [Figure 7] FIG. 7 is a block diagram showing a power supply system according to a fifth embodiment of the present disclosure. [Figure 8] FIG. 8 is a perspective view showing a power supply system according to the sixth embodiment. [Figure 9] FIG. 9 is a cross-sectional view showing the power supply system. [Figure 10] FIG. 10 is a perspective view showing the battery cooling section and the module cooling section which are integrally formed. [Figure 11]FIG. 11 is a plan view showing the power supply system. [Figure 12] FIG. 12 is a perspective view showing a power supply system according to the seventh embodiment. [Figure 13] FIG. 13 is a perspective view showing the battery cooling section and the module cooling section. [Figure 14] FIG. 14 is a plan view showing the power supply system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] (1) The present disclosure relates to an electronic device module connected to a battery pack having a high-voltage battery, the electronic device module having a conductive path electrically connected to the battery pack, a branch portion electrically connected to the conductive path, a plurality of branch paths electrically connected to the branch portion, a circuit board electrically connected to at least one of the plurality of branch paths, and a plurality of branch connectors electrically connected to the plurality of branch paths, the circuit board having a plurality of power conversion portions that convert power.

[0011] The battery pack and the electrical devices can be electrically connected by connecting the wire harness from the electrical devices mounted on the vehicle to a branch connector provided in the electronic device module, which reduces the number of steps required to connect the battery pack and the electrical devices compared to connecting the battery pack and the electrical devices individually.

[0012] (2) It is preferable that the multiple power conversion units are one or more of an on-board charger used to charge the high-voltage battery, a DC / AC conversion unit that converts direct current from the high-voltage battery into alternating current, and a DC / DC conversion unit that converts the voltage of the direct current from the high-voltage battery.

[0013] By connecting the battery pack to the electronic device module, it is possible to connect the high-voltage battery to one or more of the on-board charger, DC / AC conversion unit, and DC / DC conversion unit, thereby reducing the connection labor compared to connecting the battery pack to each of the on-board charger, DC / AC conversion unit, and DC / DC conversion unit.

[0014] (3) It is preferable to have a power supply control unit that controls the high-voltage battery.

[0015] By connecting the DC power supply device and the electronic device module, the high-voltage battery and the power supply control unit can be connected, so that the number of steps required for connecting the high-voltage battery and the power supply control unit can be reduced.

[0016] (4) It is preferable that the vehicle has a branch connector electrically connected to a quick charger for quickly charging the high-voltage battery, and has a quick-charging path connecting the branch connector and the conductive path electrically connected to the battery pack.

[0017] Since the branching section for branching power from the high-voltage battery pack and the rapid charging path for branching power from the high-voltage battery pack to a rapid charger can be formed together in the electronic device module, the electronic device module can be manufactured efficiently.

[0018] (5) The present disclosure is a power supply system including an electronic device module according to any one of (1) to (4) above, and a battery pack connected to the electronic device module and having a high-voltage battery.

[0019] (6) It is preferable that the battery pack has a power connector, the electronic device module has an equipment connector that mates with the power connector along a mating direction, the power connector has a power terminal having a power connection portion extending in a direction intersecting the mating direction, and the equipment connector has an equipment terminal having an equipment connection portion extending in a direction intersecting the mating direction, and the power connection portion and the equipment connection portion are in elastic contact with each other to electrically connect the power terminal and the equipment terminal.

[0020] By mating the power connector and the equipment connector along the mating direction, the battery pack and the electronic equipment module can be electrically connected, thereby improving the efficiency of the work of connecting the battery pack to the electronic equipment module.

[0021] Furthermore, since a wire harness for connecting the battery pack and the electronic device module is not required, the power supply system can be made smaller.

[0022] (7) It is preferable that the battery pack is in thermal contact with a battery cooling section that cools the battery pack, the battery cooling section has a first flow path therein through which a refrigerant flows, the electronic equipment module is in thermal contact with a module cooling section that cools the electronic equipment module, and the module cooling section has a second flow path therein through which the refrigerant flowing out of the flow path of the battery cooling section flows.

[0023] Heat generated in the energy storage element is transferred from the battery pack to the battery cooling section, and then transferred to the coolant flowing in the first flow path provided in the battery cooling section. This allows the temperature of the energy storage element to be lowered. Next, the coolant flowing out of the first flow path flows into the second flow path. In the module cooling section provided with the second flow path, heat derived from the electronic device is transferred from the electronic device module to the module cooling section, and then transferred to the coolant flowing in the second flow path. This allows the temperature of the electronic device to be lowered. In the present disclosure, the coolant for cooling the electronic device in the module cooling section can also serve as the coolant for cooling the energy storage element in the battery cooling section. This allows the electronic device to be cooled efficiently.

[0024] (8) It is preferable that the battery cooling section and the module cooling section are integrally formed, thereby making it possible to reduce the number of parts.

[0025] (9) It is preferable that the battery cooling unit and the module cooling unit are separate components, the battery cooling unit has a first inlet through which the refrigerant flows into the first flow path and a first outlet through which the refrigerant flows out from the first flow path, and the module cooling unit has a second inlet through which the refrigerant flowing out from the first outlet flows into the second flow path and a second outlet through which the refrigerant flows out from the second flow path.

[0026] According to the above configuration, the battery pack and the battery cooling unit, and the electronic device module and the module cooling unit can be arranged in different locations, thereby improving the design freedom for the arrangement of the battery pack and the battery cooling unit, and the electronic device module and the module cooling unit.

[0027] Furthermore, since the electronic device module is cooled by the coolant flowing out from the first flow path of the battery cooling portion that cools the power storage element, a decrease in the cooling efficiency of the power storage element can be suppressed.

[0028] [Details of the embodiment of the present disclosure] The present disclosure will be described below with reference to the embodiments. The present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0029] <Embodiment 1> A first embodiment of the present disclosure will be described with reference to Figs. 1 to 3. A power supply system 10 according to the present embodiment is mounted on a vehicle such as an electric vehicle or a hybrid vehicle. As shown in Fig. 1, a battery pack 12, an electronic device module 13, a PCU 14 (Power Control Unit), a quick charger 15, a normal charger 16, an AC power outlet 17, low-voltage equipment 18, and high-voltage equipment 19 are mounted on a vehicle 11. The power supply system 10 according to the present embodiment includes a battery pack 12 having a high-voltage battery 20, and an electronic device module 13 connected to the battery pack 12. In the following description, for multiple identical members, only some of the members may be labeled with reference numerals, and the reference numerals may be omitted for the other members.

[0030] [Power System 10] 1, the battery pack 12 and the electronic device module 13 are electrically connected. The electronic device module 13 is electrically connected to the PCU 14, the quick charger 15, the normal charger 16, the outlet 17, the low-voltage equipment 18, and the high-voltage equipment 19. The low-voltage equipment 18 includes a low-voltage battery 24. The high-voltage equipment 19 includes an air conditioner compressor 21, a water heater 22, and other optional equipment 23. The high-voltage equipment 19 is not limited to the above-mentioned equipment.

[0031] [Battery Pack 12] 2, the high-voltage battery 20 includes a plurality of storage elements 25. Any storage element 25, such as a lithium-ion battery, can be appropriately selected as the storage element 25. The high-voltage battery 20 is used as a drive source for the vehicle 11, and outputs a high voltage (e.g., about 300 V). The output voltage of the high-voltage battery 20 when fully charged is higher than the output voltage of the low-voltage battery 24 when fully charged (e.g., about 12 V).

[0032] 2, the battery pack 12 has a case 26, and the high-voltage battery 20 is housed in the case 26. A power connector 27 is attached to the case 26. The power connector 27 is electrically connected to the high-voltage battery 20.

[0033] A first conductive path 28 is electrically connected to the positive electrode of the high-voltage battery 20 , and a second conductive path 29 is electrically connected to the negative electrode of the high-voltage battery 20 .

[0034] [Electronics Module 13] 2, the electronic device module 13 has a case 30, which accommodates a current sensor 31, a power supply control unit 32, a first system main relay 33, a second system main relay 34, a main fuse 35, a fuse 36, a branching unit 37, a circuit board 38, a first quick-charging relay 39, and a second quick-charging relay 40. An equipment connector 41 that can be mated with the power supply connector 27 is attached to the case 30. In addition, a plurality of branch connectors 42 that are electrically connected to the PCU 14, the quick charger 15, the normal charger 16, the outlet 17, the low-voltage equipment 18, and the high-voltage equipment 19 are attached to the case 30.

[0035] As shown in Fig. 3, the device connector 41 has a device connector housing 43 made of insulating synthetic resin and a metal device terminal 44. The device terminal 44 is formed by pressing a conductive metal plate into a predetermined shape. The device terminal 44 has a device connection part 45 extending in a direction intersecting the fitting direction in which the power connector 27 and the device connector 41 are fitted together. The device connection part 45 is provided at the front end of the device terminal 44 in the fitting direction of the device connector 41. A flexible conductor 46 having flexibility is connected to the rear end of the device terminal 44. The flexible conductor 46 is made of a braided wire made of braided thin metal wires.

[0036] The device connector housing 43 has a shaft portion 47 that extends forward in the fitting direction of the device connector 41. The shaft portion 47 is solid and columnar. A coil spring 48 is fitted onto the outer periphery of the shaft portion 47. In the fitting direction of the device connector 41, the device connection portion 45 of the device terminal 44 abuts against the front end portion of the coil spring 48 from the front.

[0037] 3, the power connector 27 has a power connector housing 49 made of insulating synthetic resin, and a metal power terminal 50. The power terminal 50 is formed by pressing a metal plate into a predetermined shape. The power terminal 50 has a power connection portion 51 that extends in a direction intersecting the fitting direction in which the power connector 27 and the device connector 41 are fitted together.

[0038] When the power connector 27 and the device connector 41 are mated, the power connection portion 51 of the power terminal 50 comes into contact with the device connection portion 45 of the device terminal 44. At this time, the coil spring 48 elastically presses the device connection portion 45 from behind in the mating direction of the device connector 41, so that the power connection portion 51 and the device connection portion 45 come into close contact with each other. This allows the power terminal 50 and the device terminal 44 to be electrically connected.

[0039] As shown in FIG. 2, the electronic device module 13 is provided with a first conductive path 28 connected to the positive electrode of the high-voltage battery 20 via a power connector 27 and an equipment connector 41. The first conductive path 28 is an example of a conductive path electrically connected to the battery pack 12. A current sensor 31 and a first system main relay 33 are connected in series to the first conductive path 28. The current sensor 31 is provided between the equipment connector 41 and the first system main relay 33. The current sensor 31 detects a current flowing through the first conductive path 28. The current detected by the current sensor 31 is transmitted to the power supply control unit 32. The first system main relay 33 is switched to either a conductive (ON) state or an open (OFF) state by a signal from the power supply control unit 32.

[0040] As shown in Fig. 2, the electronic device module 13 is provided with a second conductive path 29 connected to the negative electrode of the high-voltage battery 20 via the power connector 27 and the device connector 41. The second conductive path 29 is an example of a conductive path electrically connected to the battery pack 12. A main fuse 35 and a second system main relay 34 are connected in series to the second conductive path 29. When an overcurrent flows through the second conductive path 29, the main fuse 35 opens the second conductive path 29 to cut off the overcurrent. The second system main relay 34 is switched to either a conductive (ON) state or an open (OFF) state by a signal from the power supply control unit 32.

[0041] A branch section 37 is electrically connected to a position of the first conductive path 28 on the opposite side of the current sensor 31 with respect to the first system main relay 33, and to a position of the second conductive path 29 on the opposite side of the main fuse 35 with respect to the second system main relay 34. The branch section 37 electrically connects the first conductive path 28 connected to the high-voltage battery 20 and the second conductive path 29 to the normal charger 16, the outlet 17, the low-voltage battery 24, the compressor 21, the water heater 22, and the optional device 23. A plurality of branch paths 60 are derived from the branch section 37. The plurality of branch paths 60 are electrically connected to the PCU 14, the circuit board 38, the compressor 21, the water heater 22, and the optional device 23, respectively.

[0042] A first quick-charging path 52 branches off from the first conductive path 28 between the first system main relay 33 and the branching unit 37. In addition, a second quick-charging path 53 branches off from the second conductive path 29 between the second system main relay 34 and the branching unit 37. The first quick-charging path 52 and the second quick-charging path 53 are electrically connected to the quick charger 15.

[0043] A first quick-charging relay 39 is connected to the first quick-charging path 52, and a second quick-charging relay 40 is connected to the second quick-charging path 53. The first quick-charging relay 39 and the second quick-charging relay 40 are switched to either a conductive (ON) state or an open (OFF) state by a signal from the power supply control unit 32.

[0044] The first rapid charging path 52 and the second rapid charging path 53 are connected to a branch connector 42. The branch connector 42 is connected to a connector 55 connected to one end of a wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the rapid charger 15. This allows power to be supplied from the rapid charger 15 to the high-voltage battery 20.

[0045] [Branch 37] 2, two branch paths 60 connected to the PCU 14 are electrically connected to the branch portion 37. The branch paths 60 are connected to a branch connector 42. The branch connector 42 is connected to a connector 55 connected to one end of a wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the branch paths 60. This allows power to be supplied from the high-voltage battery 20 to the PCU 14.

[0046] The PCU 14 converts the output power from the high-voltage battery 20 into power for driving a motor (not shown) and supplies it to the motor. The PCU 14 includes, for example, an inverter (not shown), and generates AC or three-phase AC from DC and supplies it to the motor.

[0047] Two branch paths 60 connected to the compressor 21 are electrically connected to the branch portion 37. The branch paths 60 are connected to a branch connector 42. The branch connector 42 is connected to a connector 55 connected to one end of a wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the branch path 60. This allows power to be supplied from the high-voltage battery 20 to the compressor 21. A fuse 36 is connected in series to one of the two branch paths 60. The fuse 36 is configured to cut off the overcurrent by melting when an overcurrent flows through the branch path 60.

[0048] Two branch paths 60 connected to the water heater 22 are electrically connected to the branch section 37. The branch paths 60 are connected to a branch connector 42. The branch connector 42 is connected to a connector 55 connected to one end of the wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the branch path 60. This allows power to be supplied from the high-voltage battery 20 to the water heater 22. The water heater 22 heats water using the power supplied from the high-voltage battery 20. A fuse 36 is connected in series to one of the two branch paths 60. The fuse 36 is configured to cut off the overcurrent by melting when an overcurrent flows through the water heater 22 branch path.

[0049] Two branch paths 60 connected to the optional device 23 are electrically connected to the branch section 37. The branch paths 60 are connected to a branch connector 42. The branch connector 42 is connected to a connector 55 connected to one end of the wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the branch path 60. This allows power to be supplied from the high-voltage battery 20 to the optional device 23. The optional device 23 performs various functions using the power supplied from the high-voltage battery 20. A fuse 36 is connected in series to one of the two branch paths 60. The fuse 36 is designed to cut off the overcurrent by melting when an overcurrent flows through the branch path of the optional device 23.

[0050] [Circuit board 38] As shown in FIG. 2, the circuit board 38 is electrically connected to the branching portion 37. The circuit board 38 has a conductive pattern (not shown) formed by a printed wiring technique. The circuit board 38 has a plurality of power conversion units 56. The power conversion units 56 have any function, such as converting DC to AC, converting AC to DC, and increasing or decreasing the voltage of DC. In this embodiment, the circuit board 38 has an on-board charger 57 that converts a household AC power source into DC, a DC / AC conversion unit 58 that converts the DC into 100V AC, and a DC / DC conversion unit 59 that reduces the DC of the high-voltage battery 20 to the voltage of the low-voltage battery 24. The on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59 are examples of the power conversion unit 56.

[0051] A branch path 60 is connected to the branch section 37, which is electrically connected to the on-board charger 57 of the circuit board 38. The on-board charger 57 and the branch connector 42 are connected in series to the branch path 60. The branch connector 42 is connected to a connector 55 connected to one end of the wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the normal charger 16. The normal charger 16 is formed so as to be connectable to a household AC power source. When the normal charger 16 is connected to a household AC power source, the on-board charger 57 converts the household AC to DC and boosts the voltage to a predetermined voltage. This allows power to be supplied from the household AC power source to the high-voltage battery 20.

[0052] A branch path 60 is connected to the branch section 37, which is electrically connected to the DC / AC conversion section 58 of the circuit board 38. The branch path 60 has the DC / AC conversion section 58 and a branch connector 42 connected in series. The branch connector 42 is connected to a connector 55 connected to one end of a wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to a 100V outlet 17 installed in the vehicle cabin. The 100V outlet 17 has the same shape as a known household AC power source. When an electric device (not shown) is connected to the outlet 17, the DC / AC conversion section 58 converts the direct current from the high-voltage battery 20 into 100V alternating current and supplies it to the electric device.

[0053] A branch path 60 is connected to the branch section 37, which is electrically connected to a DC / DC conversion section 59 of the circuit board 38. The branch path 60 has the DC / DC conversion section 59 and a branch connector 42 connected in series. The branch connector 42 is connected to a connector 55 that is connected to one end of a wire harness 54. The wire harness 54 has two electric wires. The connector 55 connected to one of the electric wires is electrically connected to the low-voltage battery 24. The other electric wire is connected to the body of the vehicle 11 and is therefore at ground potential. The DC / AC conversion section 58 steps down the direct current from the high-voltage battery 20 to 12 V and supplies the direct current to the low-voltage battery 24.

[0054] The low-voltage battery 24 may be configured by a lead-acid battery, a lithium-ion battery, or any other type of storage battery.

[0055] [Power supply control unit 32] As shown in Fig. 2, the electronic device module 13 has a power supply control unit 32. The power supply control unit 32 can communicate with the high-voltage battery 20, the current sensor 31, the first system main relay 33, the second system main relay 34, the first quick-charging relay 39, the second quick-charging relay 40, and the circuit board 38 by wire or wirelessly. The power supply control unit 32 can communicate with an on-board charger 57, a DC / AC conversion unit 58, and a DC / DC conversion unit 59 provided on the circuit board 38 by communicating with the circuit board 38. The power supply control unit 32 receives information from the high-voltage battery 20, the current sensor 31, the first system main relay 33, the second system main relay 34, the first quick-charging relay 39, the second quick-charging relay 40, the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59, and controls the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59 based on this information.

[0056] [Process of assembling the power supply system 10 to the vehicle 11] Next, there will be shown an example of a process for assembling the power supply system 10 according to this embodiment to the vehicle 11. The process for assembling the power supply system 10 to the vehicle 11 is not limited to the following description.

[0057] The battery pack 12 is fixed to the vehicle 11 by a known method such as bolting. The power connector 27 of the battery pack 12 is brought close to the device connector 41 of the electronic device module 13. When the power connector 27 and the device connector 41 begin to fit together, the power connection portion 51 of the power terminal 50 comes into contact with the device connection portion 45 of the device terminal 44. When the power connector 27 and the device connector 41 are further brought close to each other, the coil spring 48 presses the device terminal 44 against the power terminal 50. When the power connector 27 and the device connector 41 are completely fitted together, a predetermined pressing force is applied to the device terminal 44 and the power terminal 50 by the coil spring 48, so that the power terminal 50 and the device terminal 44 are electrically connected. As a result, the battery pack 12 and the electronic device module 13 are electrically connected to each other.

[0058] By electrically connecting the battery pack 12 and the electronic device module 13, the circuit board 38 attached to the electronic device module 13 is electrically connected to the battery pack 12. This electrically connects the battery pack 12 to the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59 provided on the circuit board 38. The electronic device module 13 is fixed to the vehicle 11 by a known method such as bolting.

[0059] The PCU 14, the quick charger 15, the normal charger 16, the outlet 17, the low-voltage battery 24, the compressor 21, the water heater 22, and the optional equipment 23 are attached to the vehicle 11 by a known method. Each of the multiple branch connectors 42 provided on the electronic device module 13 is electrically connected to the PCU 14, the quick charger 15, the normal charger 16, the outlet 17, the low-voltage battery 24, the compressor 21, the water heater 22, and the optional equipment 23 by a wire harness 54.

[0060] [Effects of this embodiment] Next, the effects of the present embodiment will be described. The present embodiment is an electronic device module 13 connected to a battery pack 12 having a high-voltage battery 20, and includes a first conductive path 28 and a second conductive path 29 electrically connected to the battery pack 12, a branch section 37 electrically connected to the first conductive path 28 and the second conductive path 29, a plurality of branch paths 60 electrically connected to the branch section, a circuit board 38 electrically connected to at least one of the plurality of branch paths 60, and a plurality of branch connectors 42 electrically connected to the plurality of branch paths 60, and the circuit board 38 includes a plurality of power conversion sections 56 that convert power.

[0061] In addition, in this embodiment, the multiple power conversion units 56 are an on-board charger 57 used to charge the high-voltage battery 20, a DC / AC conversion unit 58 that converts direct current from the high-voltage battery 20 into alternating current, and a DC / DC conversion unit 59 that converts the voltage of the direct current from the high-voltage battery 20.

[0062] According to the present embodiment, the battery pack 12 can be electrically connected to the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59 by a single operation of connecting the battery pack 12 and the electronic device module 13. As a result, the number of connection steps can be reduced compared to the case where three operations are required to individually connect the battery pack 12 to the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59. Increasing the number of power conversion units 56 provided on the circuit board 38 can further enhance the effect of reducing the number of connection steps.

[0063] Furthermore, according to this embodiment, the electronic device module 13 has a power supply control unit 32 that controls the high-voltage battery 20. As a result, the high-voltage battery 20 and the power supply control unit 32 can be connected by connecting the battery pack 12 and the electronic device module 13, so the number of steps for connecting the high-voltage battery 20 and the power supply control unit 32 can be reduced compared to when the power supply control unit 32 is disposed in a position different from the battery pack 12 and the electronic device module 13.

[0064] In addition, according to this embodiment, the electronic device module 13 has a branch connector 42 electrically connected to a quick charger 15 for quickly charging the high-voltage battery 20, and has a first quick-charging path 52 and a second quick-charging path 53 that connect the branch connector 42 to a first conductive path 28 and a second conductive path 29 electrically connected to the battery pack 12.

[0065] Since the branching section 37 for branching the power from the high voltage battery 20 and the first quick charging path 52 and the second quick charging path 53 for branching the power from the high voltage battery 20 to the quick charger 15 can be formed together in the electronic device module 13, the electronic device module 13 can be manufactured efficiently.

[0066] The power supply system 10 according to this embodiment includes an electronic device module 13 and a battery pack 12 connected to the electronic device module 13 and having a high-voltage battery 20 .

[0067] Furthermore, according to this embodiment, the battery pack 12 has a power connector 27, the electronic device module 13 has an equipment connector 41 that engages with the power connector 27 along the engaging direction, the power connector 27 has a power terminal 50 having a power connection portion 51 extending in a direction intersecting the engaging direction, and the equipment connector 41 has an equipment terminal 44 having an equipment connection portion 45 extending in a direction intersecting the engaging direction, and the power connection portion 51 and the equipment connection portion 45 come into elastic contact with each other, thereby electrically connecting the power terminal 50 and the equipment terminal 44.

[0068] By mating the power connector 27 and the equipment connector 41 along the mating direction, the battery pack 12 and the electronic equipment module 13 can be electrically connected, thereby improving the efficiency of the work of connecting the battery pack 12 to the electronic equipment module 13.

[0069] Furthermore, since the wire harness 54 for connecting the battery pack 12 and the electronic device module 13 to each other is not required, the power supply system 10 can be made smaller.

[0070] <Embodiment 2> Next, a second embodiment of the present disclosure will be described with reference to Fig. 4. In a power supply system 70 according to this embodiment, a high-voltage junction box 72 is disposed in a battery pack 71 between a high-voltage battery 20 and a power connector 27. The high-voltage junction box 72 has a first conductive path 28, a second conductive path 29, a current sensor 31, a first system main relay 33, a main fuse 35, and a second system main relay 34.

[0071] A current sensor 31 and a first system main relay 33 are connected in series to the first conductive path 28. The first system main relay 33 is disposed between the current sensor 31 and the power connector 27.

[0072] The main fuse 35 and the second system main relay 34 are directly connected to the second conductive path 29. The second system main relay 34 is disposed between the main fuse 35 and the power connector 27.

[0073] The battery pack 12 includes a high-voltage battery 20, a current sensor 31, a first system main relay 33, a second system main relay 34, a first quick-charge relay 39, a second quick-charge relay 40, and a power supply control unit 32 that can communicate with a circuit board 38.

[0074] The electronic device module 73 of this embodiment has a first conductive path 28, a second conductive path 29, a first quick-charging path 52, a second quick-charging path 53, a first quick-charging relay 39, a second quick-charging relay 40, a branch section 37, a circuit board 38, a fuse 36, a branch path 60, and a branch connector 42.

[0075] The configuration other than the above is substantially the same as in the first embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0076] According to this embodiment, the electronic device module 73 can also be applied to the battery pack 71 in which the high-voltage junction box 72 is disposed.

[0077] <Embodiment 3> Next, a third embodiment of the present disclosure will be described with reference to Fig. 5. In a power supply system 80 according to this embodiment, a power connector 84 of a battery pack 81 and an equipment connector 85 of an electronic device module 82 are connected by a wire harness 83.

[0078] The configuration other than the above is substantially the same as in the second embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0079] According to the above configuration, by arbitrarily setting the length dimension of the wire harness 83, the electronic device module 82 can be disposed at a location away from the battery pack 81, so that the accommodation space within the vehicle 11 can be utilized efficiently.

[0080] <Embodiment 4> Next, a fourth embodiment of the present disclosure will be described with reference to Fig. 6. In a power supply system 90 according to this embodiment, a high-voltage junction box 92 is disposed in a battery pack 91 between a high-voltage battery 20 and a power connector 27. The high-voltage junction box 92 has a first conductive path 28, a second conductive path 29, a current sensor 31, a first system main relay 33, a main fuse 35, a second system main relay 34, a first quick-charging path 52, a second quick-charging path 53, a first quick-charging relay 39, and a second quick-charging relay 40.

[0081] A current sensor 31 and a first system main relay 33 are connected in series to the first conductive path 28. The first system main relay 33 is disposed between the current sensor 31 and the power connector 27.

[0082] A first quick-charging path 93 branches off from the first conductive path 28 between the first system main relay 33 and the power connector 27. In addition, a second quick-charging path 94 branches off from the second conductive path 29 between the second system main relay 34 and the power connector 27. The first quick-charging path 93 and the second quick-charging path 94 are electrically connected to the quick charger 15.

[0083] A first quick-charging relay 39 is connected to the first quick-charging path 93 , and a second quick-charging relay 40 is connected to the second quick-charging path 94 .

[0084] A branch connector 42 connected to a first rapid charging path 93 and a second rapid charging path 94 is provided in the case 26 of the battery pack 91. The branch connector 42 is connected to a connector 55 connected to one end of a wire harness 54. The connector 55 connected to the other end of the wire harness 54 is connected to the rapid charger 15. As a result, power is supplied from the rapid charger 15 to the high-voltage battery 20.

[0085] The battery pack 91 includes a high-voltage battery 20, a current sensor 31, a first system main relay 33, a second system main relay 34, a first quick-charging relay 39, a second quick-charging relay 40, and a power supply control unit 32 that can communicate with a circuit board 38.

[0086] The electronic device module 95 according to this embodiment has a branching section 37, a circuit board 38, a fuse 36, a branching path, and a branching connector 42. In this embodiment, the device connector 41 and the branching section 37 are directly connected. In this embodiment, the device connector 41 corresponds to a conductive path connected to the battery pack 91.

[0087] The configuration other than the above is substantially the same as in the first embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0088] According to this embodiment, the electronic device module 95 can also be applied to the battery pack 91 connected to the quick charger 15.

[0089] A relatively large current flows through the first system main relay 33, the first quick-charging relay 39, the second system main relay 34, and the second quick-charging relay 40, and so they tend to be large in size. By arranging these together in the high-voltage junction box 92, spatial efficiency can be improved, and the power supply system 90 can be made smaller overall.

[0090] <Embodiment 5> Next, a fifth embodiment of the present disclosure will be described with reference to Fig. 7. In a power supply system 100 according to this embodiment, a power connector 104 of a battery pack 101 and an equipment connector 105 of an electronic device module 102 are connected by a wire harness 103.

[0091] The configuration other than the above is substantially the same as in the fourth embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0092] According to the above configuration, by arbitrarily setting the length dimension of the wire harness 103, the electronic device module 102 can be disposed at a location away from the battery pack 101, so that the accommodation space within the vehicle 11 can be utilized efficiently.

[0093] <Embodiment 6> Next, a sixth embodiment of the present disclosure will be described with reference to Fig. 8 to Fig. 11. As shown in Fig. 8, in a power supply system 201 according to this embodiment, a battery pack 202 has a case 26 and a power connector 27 attached to the case 26. Also, an electronic device module 203 has a case 30 and an equipment connector 41 attached to the case 30. As shown in Fig. 9, the power connector 27 of the battery pack 202 is connected to the equipment connector 41 of the electronic device module 203, whereby a conductive path 204 disposed in the battery pack 202 and electrically connected to the power storage element 25 is electrically connected to the electronic device module 203.

[0094] 8, a plurality of connectors 205 (three in this embodiment) are attached to the case 30 of the electronic device module 203. A wire harness 206 is connected to each connector 205. The wire harness 206 is electrically connected to an external circuit.

[0095] The power supply system 201 has a battery cooling section 207 that cools the battery pack 202. The battery pack 202 is placed on an upper surface of the battery cooling section 207. The case 26 of the battery pack 202 is thermally connected to the battery cooling section 207 that cools the battery pack 202. The term "thermally connected" means that heat can be transferred between the case 26 of the battery pack 202 and the battery cooling section 207. The outer surface of the case 26 of the battery pack 202 and the outer surface of the battery cooling section 207 may be in contact with each other or may be separated from each other. In this embodiment, the outer surface of the case 26 of the battery pack 202 and the outer surface of the battery cooling section 207 are in contact with each other.

[0096] 9, in case 26 of battery pack 202, heat transfer sheet 208 is interposed between power storage element 25 and the bottom wall of case 26. Heat transfer sheet 208 is a sheet made of synthetic resin and has higher thermal conductivity than air. This allows heat generated in power storage element 25 to be transferred to case 26 via heat transfer sheet 208.

[0097] As shown in Fig. 10, the battery cooling section 207 has a flat plate shape. When viewed from above, the size of the battery cooling section 207 is formed to be substantially the same as that of the battery pack 202 (see Fig. 8). "Substantially the same" includes a case where the size of the battery pack 202 and the size of the battery cooling section 207 are the same when viewed from above, and also includes a case where the size of the battery pack 202 and the size of the battery cooling section 207 are different but can be recognized as being substantially the same. In this embodiment, the battery cooling section 207 has a rectangular shape when viewed from above.

[0098] 9, the battery cooling unit 207 has a first flow path 209 formed therein through which a refrigerant (not shown) flows. The first flow path 209 has a cylindrical shape with a circular cross section. The first flow path 209 is disposed in a bent state within the battery cooling unit 207 (see FIG. 10).

[0099] As shown in FIG. 10, an inlet 210 for the refrigerant to flow into the first flow path 209 is opened at a side edge of the case 26 of the battery cooling unit 207. An inlet passage 211 is connected to the inlet 210. An outlet 212 for the refrigerant to flow out of the first flow path 209 is opened at a side edge of the case 26 of the battery cooling unit 207. An outlet passage 213 is connected to the outlet 212. The inlet passage 211 and the outlet passage 213 may be pipes made of metal or synthetic resin, or may be tubes having rubber elasticity. In this embodiment, the inlet 210 and the outlet 212 are formed at the same side edge of the case 26. The inlet 210 and the outlet 212 may be configured to be provided at different side edges of the case 26, respectively.

[0100] The coolant flowing through the first flow path 209 can be appropriately selected from known coolants such as water, alcohol, oil, air, and fluorine-inactive liquid.

[0101] The heat transferred to case 26 of battery cooling section 207 is transferred to first flow path 209, and then transferred to the refrigerant flowing through first flow path 209. The refrigerant flows through first flow path 209 and flows out from outlet 212. In this way, the heat transferred from power storage element 25 to battery cooling section 207 is transferred in the order of power storage element 25, heat transfer sheet 208, and the refrigerant, and moves from outlet 212 to the outside.

[0102] 8, the battery cooling section 207 is provided with a module cooling section 214 that protrudes from a side edge on the electronic device module 203 side when the battery pack 202 and the electronic device module 203 are connected. In this embodiment, the battery cooling section 207 and the module cooling section 214 are integrally formed. The electronic device module 203 is placed on the upper surface of the module cooling section 214 via a heat transfer sheet 208.

[0103] The case 30 of the electronic device module 203 is thermally connected to the module cooling section 214 that cools the electronic device module 203. Being thermally connected means that heat is transferable between the case 30 of the electronic device module 203 and the module cooling section 214. The outer surface of the case 30 of the electronic device module 203 and the outer surface of the module cooling section 214 may be in contact with each other or may be separated from each other. In this embodiment, the outer surface of the case 30 of the electronic device module 203 and the outer surface of the module cooling section 214 are in thermal contact with each other via the heat transfer sheet 208.

[0104] The module cooling section 214 has a flat plate shape in the vertical direction. When viewed from above, the module cooling section 214 is formed larger than the electronic device module 203. In this embodiment, the module cooling section 214 has a rectangular shape when viewed from above.

[0105] As shown in FIG. 11, the module cooling section 214 has a second flow path 215 formed therein through which the refrigerant flows. The second flow path 215 has a cylindrical shape with a circular cross section. The second flow path 215 is arranged in a bent state within the module cooling section 214. In this embodiment, the first flow path 209 and the second flow path 215 are formed continuously. A connecting portion 216 between the first flow path 209 and the second flow path 215 and a connecting portion 217 between the second flow path 215 and the first flow path 209 are provided between the inlet 210 and the outlet 212. As a result, the refrigerant flows in the order of the inlet 210, the first flow path 209, the connecting portion 216 between the first flow path 209 and the second flow path 215, the second flow path 215, the connecting portion 217 between the second flow path 215 and the first flow path 209, the first flow path 209, and the outlet 212.

[0106] Heat generated in the electronic device module 203 is transferred from the case 30 of the electronic device module 203 to the module cooling unit 214. The heat transferred to the module cooling unit 214 is transferred from the second flow path 215 to the refrigerant, flows from a connection portion 217 between the second flow path 215 and the first flow path 209 to the first flow path 209, and moves from the outlet 212 to the outside.

[0107] The configuration other than the above is substantially the same as in the first embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0108] According to this embodiment, the battery pack 202 is in thermal contact with a battery cooling section 207 that cools the battery pack 202, and a first flow path 209 through which a refrigerant flows is provided inside the battery cooling section 207, and the electronic device module 203 is in thermal contact with a module cooling section 214 that cools the electronic device module 203, and a second flow path 215 is provided in the module cooling section 214 through which the refrigerant that has flowed out of the flow path of the battery cooling section 207 flows.

[0109] The heat generated in the electric storage element 25 is transferred from the battery pack 202 to the battery cooling section 207, and then transferred to the coolant flowing in the first flow path 209 provided in the battery cooling section 207. This allows the temperature of the electric storage element 25 to be lowered. Next, the coolant flowing out of the first flow path 209 flows into the second flow path 215. In the module cooling section 214 provided with the second flow path 215, the heat derived from the electronic device module 203 is transferred to the module cooling section 214, and then transferred to the coolant flowing in the second flow path 215. This allows the temperature of the electronic device module 203 to be lowered. In this embodiment, the coolant for cooling the module cooling section 214 can also serve as the coolant for cooling the electric storage element 25 in the battery cooling section 207. This allows the electronic device module 203 to be cooled efficiently.

[0110] In the present embodiment, the battery cooling section 207 and the module cooling section 214 are integrally formed, which makes it possible to reduce the number of parts.

[0111] <Embodiment 7> Next, a seventh embodiment of the present disclosure will be described with reference to Fig. 12 to Fig. 14. As shown in Fig. 12, in a power supply system 230 according to this embodiment, a power connector 84 of a battery pack 231 and an equipment connector 85 of an electronic device module 232 are connected by a plurality of (four in this embodiment) wire harnesses 83. In addition, a battery cooling unit 233 that cools the battery pack 231 and a module cooling unit 234 that cools the electronic device module 232 are separate components.

[0112] 13, the battery cooling unit 233 has a first inlet 236 through which the refrigerant flows into a first flow path 235, and a first outlet 237 through which the refrigerant flows out from the first flow path 235. In addition, the module cooling unit 234 has a second inlet 239 through which the refrigerant flows into a second flow path 238, and a second outlet 240 through which the refrigerant flows out from the second flow path 238.

[0113] As shown in FIG. 13 and FIG. 14, the inflow path 241 is connected to the first inlet 236, and one end of the relay path 242 is connected to the first outlet 237. The other end of the relay path 242 is connected to the second inlet 239. As a result, the refrigerant flowing out from the first outlet 237 flows into the second inlet 239. The outflow path 243 is connected to the second outlet 240 of the module cooling unit 234. The refrigerant flows in the order of the inflow path 241, the first inlet 236, the first flow path 235, the first outlet 237, the relay path 242, the second inlet 239, the second flow path 238, the second outlet 240, and the outflow path 243. The inflow path 241, the relay path 242, and the outflow path 243 may be pipes made of metal or synthetic resin, or may be tubes having rubber elasticity.

[0114] The configuration other than the above is substantially the same as in the sixth embodiment, so the same members are given the same reference numerals and duplicated explanations are omitted.

[0115] According to this embodiment, the battery cooling section 233 and the module cooling section 234 are separate components, and the battery cooling section 233 has a first inlet 236 through which the refrigerant flows into the first flow path 235 and a first outlet 237 through which the refrigerant flows out from the first flow path 235, and the module cooling section 234 has a second inlet 239 through which the refrigerant flowing out from the first outlet 237 flows into the second flow path 238 and a second outlet 240 through which the refrigerant flows out from the second flow path 238.

[0116] According to the above configuration, the battery pack 231 and the battery cooling unit 233, and the electronic device module 232 and the module cooling unit 234 can be arranged in different locations. This improves the degree of freedom in designing the arrangement of the battery pack 231 and the battery cooling unit 233, and the electronic device module 232 and the module cooling unit 234.

[0117] Furthermore, since the electronic device module 232 is cooled by the coolant flowing out from the first flow path 235 of the battery cooling section 233 that cools the power storage element 25, a decrease in the cooling efficiency of the power storage element 25 can be suppressed.

[0118] <Other embodiments> (1) The member for connecting the electronic device module to various devices is not limited to a wire harness, and may be a bus bar made of a metal plate.

[0119] (2) The voltage of the low-voltage battery 24 is not limited to 12 V, but may be any voltage, such as 48 V.

[0120] (3) The low-voltage device 18 is not limited to the low-voltage battery 24, and any electric device can be used.

[0121] (4) It is sufficient that the circuit board 38 is provided with the power conversion unit 56 of two or more frequencies, and is not limited to the on-board charger 57, the DC / AC conversion unit 58, and the DC / DC conversion unit 59.

[0122] (5) The connection structure between the power supply terminal 50 and the device terminal 44 is not limited. For example, the connection may be made by means of bolts and nuts, and any other method may be used. [Explanation of symbols]

[0123] 10, 70, 80, 90, 100, 201, 230: Power Systems 11: Vehicles 12, 71, 81, 91, 101, 202, 231: Battery pack 13, 73, 82, 95, 102, 203, 232: Electronics Modules 14: PCU 15: Fast charger 16: Normal charger 17: Outlet 18: Low voltage equipment 19: High voltage equipment 20: High voltage battery 21: Compressor 22: Water heater 23: Optional equipment 24: Low voltage battery 25: Energy storage element 26: Case 27: Power connector 28: First conductive path 29: Second conductive path 30: Case 31: Current sensor 32: Power supply control section 33: 1st system main relay 34: Second system main relay 35: Main fuse 36: Fuse 37: Branch 38: Circuit Board 39: First quick charge relay 40: Second quick charge relay 41: Equipment connector 42: Branch connector 43: Device connector housing 44: Equipment terminal 45: Equipment connection 46: Flexible conductor 47: Shaft 48: Coil spring 49: Power connector housing 50: Power terminal 51: Power connection 52, 93: 1st quick charging path 53, 94: 2nd quick charging path 54, 83, 103: Wire harness 55: Connector 56: Power conversion section 57: On-board charger 58: DC / AC conversion section 59: DC / DC conversion section 60: Fork in the road 72, 92: High voltage junction box 204: Conductive Path 205: Connector 206: Wire harness 207, 233: Battery cooling section 208: Heat transfer sheet 209, 235: First flow path 210: Inlet 211, 241: Inflow channel 212: Outlet 213, 243: Outflow channel 214, 234: Module cooling section 215, 238: Second flow path 216: Connecting part 217: Connecting part 236: 1st inlet 237: 1st outlet 239: 2nd inlet 240: 2nd outlet 242: Relay route

Claims

1. An electronic device module connected to a battery pack having a high voltage battery, a conductive path electrically connected to the battery pack; A branch portion electrically connected to the conductive path; A plurality of branch paths each having one end electrically connected to the branch portion; a plurality of branch connectors electrically connected to the other ends of the plurality of branch paths and detachably connected to connectors of a plurality of devices; a circuit board electrically connected between the branching portion and the branching connector in the plurality of branch paths, the circuit board is provided with a plurality of power conversion units that convert power between the battery pack connected via the conductive path and a device connected via the branch connector; Each of the multiple power conversion units is an electronic device module having one end connected to one of the multiple branch paths and the other end connected to one of the multiple branch connectors on the circuit board.

2. 2. The electronic device module according to claim 1, wherein the plurality of power conversion units are one or more of an on-board charger used to charge the high-voltage battery, a DC / AC conversion unit that converts direct current from the high-voltage battery into alternating current, and a DC / DC conversion unit that converts the voltage of the direct current from the high-voltage battery.

3. 3. The electronic device module according to claim 1, further comprising a power supply control unit for controlling the high-voltage battery.

4. The branch connector includes a first branch connector connected to the branch section and a second branch connector not connected to the branch path, the second branch connector is electrically connected to a quick charger for quick charging the high voltage battery; 4. The electronic device module according to claim 1, further comprising a rapid charging path that connects the second branch connector and the conductive path that is electrically connected to the battery pack.

5. The electronic device module according to any one of claims 1 to 4, a battery pack connected to the electronic device module and having a high-voltage battery;

6. the battery pack has a power connector, and the electronic device module has an equipment connector that mates with the power connector along a mating direction; the power connector has a power terminal having a power connection portion extending in a direction intersecting the fitting direction, the device connector has a device terminal having a device connection portion extending in a direction intersecting the fitting direction, 6. The power supply system according to claim 5, wherein the power supply terminal and the device terminal are electrically connected to each other by elastically contacting the power supply connection portion and the device connection portion.

7. the battery pack is in thermal contact with a battery cooling unit that cools the battery pack; A first flow path through which a refrigerant flows is provided inside the battery cooling portion, the electronic device module is in thermal contact with a module cooling unit that cools the electronic device module; 7. The power supply system according to claim 5, wherein the module cooling section is provided with a second flow path through which the refrigerant that has flowed out of the flow path of the battery cooling section flows.

8. 8. The power supply system according to claim 7, wherein the battery cooling section and the module cooling section are integrally formed.

9. The battery cooling unit and the module cooling unit are separate components, The battery cooling unit has a first inlet through which the refrigerant flows into the first flow path and a first outlet through which the refrigerant flows out of the first flow path, 8. The power supply system according to claim 7, wherein the module cooling section has a second inlet through which the coolant flowing out of the first outlet flows into the second flow path, and a second outlet through which the coolant flows out of the second flow path.

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