WO2023203976A1 - Power-supply electric power distributing device - Google Patents

Power-supply electric power distributing device Download PDF

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Publication number
WO2023203976A1
WO2023203976A1 PCT/JP2023/012519 JP2023012519W WO2023203976A1 WO 2023203976 A1 WO2023203976 A1 WO 2023203976A1 JP 2023012519 W JP2023012519 W JP 2023012519W WO 2023203976 A1 WO2023203976 A1 WO 2023203976A1
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WO
WIPO (PCT)
Prior art keywords
printed circuit
circuit board
circuit unit
case
power distribution
Prior art date
Application number
PCT/JP2023/012519
Other languages
French (fr)
Japanese (ja)
Inventor
勇貴 藤村
良之 薄井
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2023203976A1 publication Critical patent/WO2023203976A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/04—Cutting off the power supply under fault conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/14—Fastening of cover or lid to box
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack

Definitions

  • the present disclosure relates to a power distribution device for power supply.
  • Patent Document 1 discloses an example in which an electrical connection box equipped with a relay, a current sensor, etc. is mounted as a power distribution device.
  • the power supply distribution device exemplified in Patent Document 1 shuts off the relay when an abnormally large current flows in the power path between the battery pack and the vehicle load or when a vehicle collision is detected. By switching, you can protect your vehicle.
  • Patent Document 2 proposes a structure that implements a new pyrofuse, a pyrofuse drive control unit, etc., to quickly shut off the circuit when an abnormal current is detected, and avoid increasing the size of the relay. ing.
  • JP2020-187968A Japanese Patent Application Publication No. 2021-155961
  • a power distribution device in which a circuit unit that controls and/or monitors the components housed inside can be stably mounted with a small number of components.
  • a power distribution device of the present disclosure is a power distribution device connected to a power source for driving a vehicle, and includes a circuit component that distributes power from the power source to a vehicle load, and a circuit component that accommodates the circuit component. a case; and a circuit unit connected to at least one component of the circuit structure to perform at least one of controlling and monitoring the component, the circuit unit controlling at least one of the controlling and monitoring the component. a printed circuit board on which a circuit capable of executing The printed circuit board is placed inside.
  • a power distribution device that can stably mount a circuit unit that controls and/or monitors components housed inside with a small number of components.
  • FIG. 1 is a perspective view showing a power distribution device according to a first embodiment.
  • FIG. 2 is a diagram schematically showing the electrical configuration of the power distribution device shown in FIG.
  • FIG. 3 is an exploded perspective view showing the power distribution device shown in FIG. 1 in an exploded state into an upper case assembly and a lower case assembly.
  • 4 is a plan view showing the lower case assembly shown in FIG. 3.
  • FIG. 5 is an exploded perspective view of the upper case side assembly shown in FIG. 3.
  • FIG. FIG. 6 is an enlarged bottom view of essential parts of the upper case side assembly shown in FIG. 3.
  • FIG. FIG. 7 is a sectional view taken along line VII-VII in FIG.
  • FIG. 8 is a perspective view showing the upper case constituting the upper case side assembly shown in FIG. 3 from the bottom side.
  • FIG. 1 is a perspective view showing a power distribution device according to a first embodiment.
  • FIG. 2 is a diagram schematically showing the electrical configuration of the power distribution device shown in FIG.
  • FIG. 9 is a perspective view showing a holding member constituting the power distribution device shown in FIG. 1.
  • FIG. FIG. 10 is a perspective view showing a power distribution device according to the second embodiment.
  • FIG. 11 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 10.
  • FIG. 12 is an exploded perspective view of the upper case side assembly shown in FIG. 11.
  • FIG. 13 is a plan view showing an enlarged main part of the upper case side assembly shown in FIG. 11.
  • FIG. FIG. 14 is a sectional view taken along line XIV-XIV in FIG. 13.
  • FIG. 15 is a bottom view of the upper case that constitutes the upper case assembly shown in FIG. 11.
  • FIG. 16 is a perspective view showing a power distribution device according to the third embodiment.
  • FIG. 17 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 16.
  • FIG. 18 is an exploded perspective view of the upper case assembly shown in FIG. 17.
  • FIG. 19 is a longitudinal cross-sectional view showing the upper case side assembly constituting the power distribution device according to the fourth embodiment, and is a view corresponding to the XIX-XIX cross section in FIG. 20.
  • FIG. 20 is an exploded perspective view of the upper case side assembly shown in FIG. 19.
  • FIG. 21 is a longitudinal sectional view showing the upper case constituting the upper case side assembly shown in FIG. 19, and is a view corresponding to the XXI-XXI section in FIG. 19.
  • FIG. 22 is a perspective view showing a power distribution device according to the fifth embodiment.
  • FIG. 23 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 22.
  • FIG. 24 is an exploded perspective view of the upper case side assembly shown in FIG. 23.
  • FIG. 25 is a longitudinal cross-sectional view showing the upper case side assembly constituting the power distribution device according to the sixth embodiment, and is a view corresponding to the XXV-XXV cross section in FIG. 26.
  • FIG. 26 is an exploded perspective view of the upper case side assembly shown in FIG. 25.
  • FIG. 27 is a longitudinal sectional view showing the upper case constituting the upper case side assembly shown in FIG. 25, and is a view corresponding to the XXVII-XXVII section in FIG. 25.
  • the power distribution device of the present disclosure includes: (1) A power distribution device connected to a power source for driving a vehicle, which includes a circuit component that distributes power from the power source to a vehicle load, a case that accommodates the circuit component, and the circuit component. a circuit unit connected to at least one component of the body to perform at least one of controlling and monitoring the component, the circuit unit including a circuit capable of performing at least one of the control and the monitoring.
  • a support part having a mounted printed circuit board and supporting the printed circuit board by covering at least one surface of the printed circuit board is formed integrally with the case, and the printed circuit board is inside the support part. something that is placed.
  • the circuit unit that is connected to at least one component of the circuit structure and controls and monitors the component has a printed circuit board, and at least A support portion that covers one surface and supports the printed circuit board is integrally formed with the case. This eliminates the need for a casing that covers both sides of the printed circuit board, making it possible to downsize the circuit unit, and making it possible to store the circuit unit by utilizing the empty space within the case.
  • the circuit unit can be assembled into the case without the need for a separate dedicated casing for the circuit unit. It is possible to provide a power distribution device that can ensure the ease of handling and safety of the unit, and can stably mount a circuit unit with a small number of parts.
  • the circuit unit can be arbitrarily configured as long as it is connected to at least one component of the circuit structure and controls and/or monitors the component.
  • the configuration may include a printed circuit board mounted with a circuit capable of controlling components to realize high-speed circuit interruption using active fuses such as pyrofuses, or any of the circuit components may be included.
  • the configuration may include a printed circuit board mounted with a circuit capable of monitoring the status of the power supply distribution device, such as the voltage and temperature of the component parts, the insulation state, and the temperature inside the case.
  • the circuit unit includes the printed circuit board and a holding member that covers the other side of the printed circuit board and holds the printed circuit board, and the holding member is held by the case and the printed circuit board is Preferably, the one surface of the substrate is covered by the support section in the case.
  • the circuit unit is composed of simple and small parts, including a printed circuit board and a holding member that covers and holds the other surface of the printed circuit board.
  • both surfaces of the printed circuit board are covered by the support section in the case.
  • the circuit unit since the circuit unit is configured by a printed circuit board, the circuit unit can be configured to be more compact. As a result, the power distribution device can be further downsized.
  • both sides of the printed circuit board are covered by the supporting parts of the case, so the case itself can be treated as a housing for the printed circuit board, and the printed circuit board can be assembled into the case. It is possible to sell, transport, etc. in the same state.
  • the circuit component includes a main relay, an active fuse connected in series to the main relay, and a current sensor that detects a current flowing through the active fuse
  • the circuit unit includes a main relay, an active fuse connected in series to the main relay, and a current sensor that detects a current flowing through the active fuse. It is preferable that the active fuse is connected to the current sensor and the active fuse is cut off when the detected value of the current sensor exceeds a threshold value. Since the circuit component of the power distribution device includes an active fuse, it is possible to quickly interrupt the circuit when an abnormal current is detected without increasing the size of the relay.
  • the circuit unit that controls the drive of the active fuse can be easily held in an existing case, and the existing case can also be used to protect the circuit unit for driving the relay and active fuse. can. Therefore, there is no need for a dedicated case for the circuit unit, and the overall size of the power supply distribution device can also be suppressed.
  • the circuit unit is engageable with an elastic engagement part provided on the case, and when the elastic engagement part of the case engages with the circuit unit, the circuit unit is connected to the case. Preferably, it is maintained at . This is because the circuit unit is held in the case by the engagement between the elastic engagement portion of the case and the circuit unit, thereby improving the assembling workability.
  • the printed circuit board of the circuit unit includes a board connector to which a connector provided at an end of a wire connected to the component can be attached. This is because the components of the circuit structure and the circuit unit can be easily connected by connector connection, and the assembly workability can be further improved.
  • the printed circuit board of the circuit unit has a board terminal connected to a connector provided on a wire terminal connected to the component, and the case accommodates the board terminal and the connector Preferably, it has an attachable connector housing. This is because the components of the circuit structure and the circuit unit can be easily connected by connector connection, and the assembly workability can be further improved. Moreover, since the connector housing is provided in the case, the configuration of the circuit unit can be simplified. If the connector housing can be configured using a case, it is possible to downsize and lower the height of the entire circuit unit and power distribution device.
  • the circuit unit is held in the case near the component parts to be connected. Because the circuit unit is held in the case near the component parts to which it is connected, the circuit unit and the environment of the component to be controlled and monitored are more easily controlled and monitored than when control and monitoring are performed using an ECU. It is possible to advantageously suppress the occurrence of differences in the environment, and improve the accuracy of judgment in control and monitoring. Moreover, since the length of the electric wire connecting the circuit unit and the component parts can be shortened, the influence of noise can be advantageously reduced, and the accuracy of judgment can be improved.
  • the case includes a lower case that accommodates and holds the components of the circuit component; and an upper case that covers an opening of the lower case, and the circuit unit is held in the upper case;
  • electric wires extending from the component are connected to the printed circuit board of the circuit unit.
  • Components connected to the circuit unit are held in a lower case, and the circuit unit is held in an upper case that covers an opening of the lower case. Therefore, the work of connecting the electric wires extending from the component parts to the printed circuit board of the circuit unit can be easily performed by using the space on the lower case without being obstructed by the components on the lower case side, and the work is excellent in work efficiency.
  • a power distribution device for a power source can be provided.
  • the holding member has a bottom plate that extends to a size that covers the entire surface of the one surface of the printed circuit board, and a peripheral wall protruding from a peripheral edge of the bottom plate, and the printed circuit board is fixed to the bottom plate. It is preferable that the The bottom plate of the holding member can cover the entire surface of one side of the printed circuit board, suppressing interference with other members of the printed circuit board, and making it possible to hold the printed circuit board more stably. Furthermore, since the peripheral wall prevents the printed circuit board from interfering with other members from the sides and ensures the rigidity of the holding member, it is also possible to improve the durability of the circuit unit.
  • the power distribution device 10 is connected to a battery pack 12 (see FIG. 2) that is a power source for driving the vehicle, and transmits power from the power source (battery pack 12) to a PCU 13 (see FIG. 2) as a vehicle load. It distributes electricity.
  • a battery pack 12 see FIG. 2
  • PCU 13 see FIG. 2
  • the power distribution device 10 can be arranged in any direction, the following description will be made in accordance with the up-down, right-left, and front-back directions shown in FIG.
  • a plurality of identical members only some of the members may be labeled with numerals, and the numerals may be omitted for other members.
  • the power distribution device 10 includes a circuit component 14 that distributes power from a battery pack 12 to a PCU 13 serving as a vehicle load, and a case 16 that accommodates the circuit component 14.
  • the circuit component 14 is composed of a plurality of component parts 18.
  • the power distribution device 10 also includes a circuit unit 20 that is connected to at least one of the plurality of components 18 that constitute the circuit component 14 and controls and/or monitors the component 18. .
  • the circuit unit 20 controls the components 18 connected to the circuit unit 20.
  • the battery pack 12 As the battery pack 12 as a power source, a conventionally known one can be adopted, so the explanation will be omitted.
  • the positive electrode side output terminal 22a of the battery pack 12 has a circuit configuration It is electrically connected to the main relay 24a on the positive side, which is one of the components 18 making up the battery pack 14, and the output terminal 22b on the negative side of the battery pack 12 is connected to the negative electrode, which is one of the components 18. It is electrically connected to the side main relay 24b.
  • the main relay 24a on the positive side is electrically connected to the positive side input terminal 25a of the PCU 13 located outside the battery pack 12 via the plurality of components 18, and the main relay 24a on the negative side
  • the relay 24b is electrically connected to a negative input terminal 25b of the PCU 13 located outside the battery pack 12.
  • the power distribution device 10 is housed within a housing of a battery pack 12 (not shown), and an ECU 26 is housed within the housing of the battery pack 12.
  • the ECU 26 is electrically connected to a plurality of components 18 that constitute the circuit component 14 in the power distribution device 10, and supplies power thereto.
  • the circuit component 14 includes, as components 18, a main relay 24, a pyrofuse 28 as an active fuse connected in series to the main relay 24, and a current flowing through the pyrofuse 28. It includes a current sensor 30 that detects.
  • the circuit component 14 includes, as components 18, a main relay 24, a pyrofuse 28 as an active fuse connected in series to the main relay 24, and a current flowing through the pyrofuse 28. It includes a current sensor 30 that detects.
  • four main relays 24 are provided, and these four main relays 24 are the above-mentioned positive side main relay 24a and negative side main relay 24b.
  • the four main relays 24, including the positive side main relay 24a and the negative side main relay 24b are fixed to, for example, a lower case 36 that constitutes the case 16 and will be described later, and the leftmost main relay 24 is the positive side main relay 24a. At the same time, the rightmost main relay 24 is the negative electrode side main relay 24b.
  • An active fuse is an element that can be cut based on an external control signal, and in the first embodiment, a pyrofuse 28 is used as the active fuse. Furthermore, in the first embodiment, two current sensors 30 (a first current sensor 30a and a second current sensor 30b) are provided. , and the second current sensor 30b are connected in series in this order. Thereby, the current flowing through the pyrofuse 28 is detected by the first current sensor 30a and the second current sensor 30b. As described later, the circuit unit 20 is connected to the pyrofuse 28 and the first current sensor 30a, and the current value of the pyrofuse 28 is detected by the first current sensor 30a and/or the second current sensor 30b. When the detected value exceeds a predetermined threshold, a control signal is transmitted from the circuit unit 20 to the pyrofuse 28, and the pyrofuse 28 is cut off.
  • the circuit component 14 includes, as the component parts 18, a precharge relay 32 and a precharge resistor 34, which are electrically connected to the main relay 24a on the positive side.
  • the precharge relay 32 and the precharge resistor 34 are fixed to an upper case 38 (described later) that constitutes the case 16, and the main relay 24a, the precharge relay 32, and the precharge resistor 34 on the positive side are connected via appropriate busbars, wiring, etc.
  • the case 16 is composed of a lower case 36 and an upper case 38 that can be separated from each other in the vertical direction, and the opening of the lower case 36 is covered by the upper case 38. It looks like this.
  • the case 16 (lower case 36 and upper case 38) is made of, for example, a synthetic resin having insulation properties.
  • a lock claw portion 39a and a lock frame body 39b are provided on the outer circumferential surface of the lower case 36 (the outer circumferential surface of the lower circumferential wall portion 42 described later) and the outer circumferential surface of the upper case 38 (the outer circumferential surface of the upper circumferential wall portion 48 described later), respectively.
  • the lower case 36 and the upper case 38 are releasably fixed by the lock claw portions 39a and the lock frame body 39b being engaged with each other.
  • the lower case 36 has a generally box-like shape that opens upward, and includes a bottom wall portion 40 having a substantially rectangular flat plate shape and a lower peripheral wall portion 42 projecting upward from the outer peripheral edge of the bottom wall portion 40.
  • a plurality of the four main relays 24, the pyrofuse 28, the first and second current sensors 30a, 30b, etc. that constitute the circuit component 14 are installed in the lower case 36.
  • the lower case side assembly 44 is constructed by housing and holding the component parts 18 in an electrically connected state via an appropriate bus bar or the like.
  • the pyrofuse 28 and the first and second current sensors 30a, 30b are located at the left end portion of the lower case assembly 44.
  • the upper case 38 as a whole has a generally box-like shape that opens downward, and includes an approximately rectangular flat upper bottom wall portion 46 and an upper peripheral wall portion 48 that protrudes downward from the outer peripheral edge of the upper bottom wall portion 46.
  • the upper peripheral wall portion 48 is not provided on the left side of the upper case 38, but is provided on the front, rear, and right side of the upper case 38. That is, the upper case 38 includes a left opening 49 through which the internal space and external space of the upper case 38 communicate with each other.
  • the components 18 such as the precharge relay 32 and the precharge resistor 34 constituting the circuit structure 14 are properly installed on the upper bottom wall 46.
  • the upper case side assembly 50 is configured by placing and fixing the circuit unit 20 in an electrically connected state via a bus bar or the like, and holding the circuit unit 20.
  • a step 51 is provided at the left end portion, and the left end portion is located higher than the other portions.
  • the left end portion of the upper case 38 has a larger vertical dimension than the other portions.
  • the circuit unit 20 is held at the left end portion of the upper case 38 whose vertical dimension is increased.
  • the left end portion of the upper case 38 constitutes a support portion 53 that covers one surface (upper surface 61) of the printed circuit board 58 constituting the circuit unit 20 and supports the printed circuit board 58. That is, the support portion 53 is formed integrally with the upper case 38, and the printed circuit board 58 is disposed inside the support portion 53, thereby preventing the printed circuit board 58 from being exposed to the outside.
  • a substantially rectangular frame-shaped holding frame is provided inside the upper circumferential wall portion 48 and protrudes downward.
  • a section 52 is provided on the lower surface of the left end portion of the upper bottom wall portion 46 constituting the support portion 53.
  • the holding frame portion 52 has a predetermined vertical dimension, and the outer peripheral surface of the holding frame portion 52 is provided with a plurality of lock protrusions 54 as elastic engagement portions that protrude toward the outer peripheral side.
  • the circuit unit 20 is held relative to the upper case 38 by mutually engaging these lock protrusions 54 with elastic lock pieces 74 provided on the circuit unit 20 and described later.
  • the holding frame portion 52 is formed with a circumferential dimension that is less than one circumference, and is provided with a notch-shaped opening 56 having a predetermined circumferential dimension (horizontal dimension) on the left side. Thereby, the internal space and external space of the holding frame section 52 are communicated with each other through the opening 56. By providing the opening 56 in the holding frame 52, the lower end of the holding frame 52 can be elastically deformed slightly toward the inner circumference.
  • the left-right dimension of the upper case 38 (upper case-side assembly 50) is smaller than the left-right dimension of the lower case 36 (lower case-side assembly 44), and the upper case-side assembly 50 and lower case-side assembly 44 When these are assembled to each other, the left end portion of the lower case assembly 44 is not covered by the upper case 38 (upper case assembly 50).
  • the pyrofuse 28 located at the left end portion of the lower case side assembly 44, the first and second current sensors 30a, 30b is not covered by the upper case 38 and is exposed to the outside, that is, upwardly.
  • the circuit unit 20 includes a printed circuit board 58 on which a circuit (not shown) capable of controlling and/or monitoring at least one component 18 connected to the circuit unit 20 is mounted; It has a holding member 60 that covers the other surface of the printed circuit board 58 and holds the printed circuit board 58.
  • the printed circuit board 58 has a substantially rectangular shape, and a circuit that can control the component parts 18 is mounted on the printed circuit board 58.
  • the circuit mounted on the printed circuit board 58 is provided, for example, on an upper surface 61 that is one surface of the printed circuit board 58, and the upper surface 61 of the printed circuit board 58 has a circuit mounted thereon and an electrical connection at the left end.
  • a board connector 62 for connection is provided.
  • three board connectors 62 are provided at the left end portion of the printed circuit board 58 so as to be spaced apart from each other in the front-rear direction.
  • the holding member 60 covers the lower surface 63, which is the other surface of the printed circuit board 58.
  • the holding member 60 has a generally box-like shape that opens upward, and is made of, for example, a synthetic resin having insulating properties.
  • the synthetic resin forming the holding member 60 may be the same as or different from the synthetic resin forming the case 16 (lower case 36 and upper case 38).
  • the holding member 60 has a substantially rectangular flat bottom plate 64 and a peripheral wall 66 that projects upward from the outer peripheral edge of the bottom plate 64 .
  • the bottom plate 64 is wide enough to cover the entire lower surface 63 of the printed circuit board 58, and screw holes 68 for screwing the printed circuit board 58 are provided at multiple locations on the bottom plate 64. ing.
  • substantially rectangular cutouts 70 are provided at three locations corresponding to the board connectors 62 on the printed circuit board 58, respectively.
  • Recesses 72 extending in the vertical direction and opening toward the inner peripheral side are provided at multiple locations on the inner peripheral surface of the peripheral wall 66, and the thickness of the peripheral wall 66 is adjusted at the positions where these recesses 72 are formed. It has been made smaller. These recesses 72 do not reach the upper end of the peripheral wall 66, and at the formation position of the recess 72, an elastic locking piece is provided at the upper end of the peripheral wall 66 that protrudes further inward than the portion of the peripheral wall 66 other than the upper end. 74 are configured. These recesses 72 and elastic locking pieces 74 are formed at positions corresponding to the locking protrusions 54 on the holding frame 52 of the upper case 38 .
  • the main relays 24 including the positive and negative main relays 24a and 24b, the pyrofuse 28, and the first and second current sensors 30a and 30b that make up the circuit component 14 are installed on the lower case 36. Accommodates and fixes electrically connected bus bars, wiring, etc. Thereby, the lower case side assembly 44 is completed.
  • the precharge relay 32 and precharge resistor 34 that constitute the circuit component 14, and the bus bars and wiring that electrically connect them are fixed to the upper case 38.
  • the printed circuit board 58, on which each board connector 62 is mounted on the upper surface 61 is stacked on the bottom plate 64 of the holding member 60 from above and fixed by screwing.
  • the circuit unit 20 is completed.
  • the circuit unit 20 is brought close to the left end portion (supporting portion 53) of the upper case 38 from below, and the lock protrusions 54 and the holding member 60 that protrude toward the outer circumference of the holding frame portion 52 of the upper case 38 are connected to each other.
  • the upper end portion of the peripheral wall 66 is brought into contact with the upper end portion of the peripheral wall 66.
  • the upper surface 61 which is one surface of the printed circuit board 58 in the circuit unit 20, is connected to the upper bottom wall portion 46 at the support portion 53 of the upper case 38 constituting the case 16.
  • the printed circuit board 58 is placed inside the support part 53 and is prevented from being exposed to the outside. Further, each board connector 62 provided at the left end of the printed circuit board 58 is exposed to the left through the opening 56 in the holding frame 52 and each notch 70 in the peripheral wall 66.
  • the lower case assembly 44 and the upper case assembly The assembly 50 is fixed to each other.
  • the main relay 24a on the positive side in the lower case side assembly 44 and the precharge relay 32 and precharge resistor 34 in the upper case side assembly 50 are electrically connected, and the bus bar in the lower case side assembly 44 and the upper case The bus bar in the side assembly 50 is electrically connected.
  • the pyro fuse 28 and the first and second current sensors 30a and 30b are connected to each other by the upper case 38, as described above. uncovered and exposed upwards.
  • each board connector 62 and each component 18 is made by an electric wire 78 having a connector 76 at its terminal.
  • each board connector 62 mounted on the printed circuit board 58 is attached with a connector 76a provided at the terminal of the electric wire 78 extending from each component 18, and also has a pyrofuse 28 and the first and second current sensors.
  • a connector 76b provided at the opposite end of the electric wire 78 is attached to 30a and 30b. Note that, as shown in FIG. 1, the electric wire 78 connecting the second current sensor 30b and the ECU 26 and the electric wire 78 connecting one of the board connectors 62 and the ECU 26 merge (or branch) in the middle.
  • the terminal of the electric wire 78 connected to the ECU 26 is provided with a connector 76c that is attached to a connector (not shown) on the ECU 26 side.
  • the connector 76a of each electric wire 78 may be attached to each board connector 62, and each board connector 62 and each component 18 may be connected to each other.
  • the pyrofuse 28 and the first and second current sensors 30a, 30b may be connected to each other by the electric wires 78, and the lower case assembly 44 and the upper case assembly 50 may be fixed.
  • the left end portion of the upper case assembly 50 is located on the left and right sides of the pyrofuse 28 and the first and second current sensors 30a and 30b in the lower case assembly 44. located relatively close in direction. That is, the circuit unit 20 is held by the upper case 38 in the vicinity in the left-right direction of the component parts 18 (pyrofuse 28, first and second current sensors 30a, 30b) connected to the circuit unit 20.
  • This power distribution device 10 is housed within the casing of the battery pack 12 as described above.
  • the positive output terminal 22a of the battery pack 12 and the positive input terminal 25a of the PCU 13 are connected in series to a positive main relay 24a, a pyrofuse 28, and first and second current sensors 30a, 30b. electrically connected via.
  • the negative output terminal 22b of the battery pack 12 and the negative input terminal 25b of the PCU 13 are electrically connected via the negative main relay 24b.
  • the pyrofuse 28 and the first current sensor 30a are electrically connected to the printed circuit board 58 in the circuit unit 20, and are controlled based on the circuit mounted on the printed circuit board 58.
  • the second current sensor 30b may be controlled by the directly connected ECU 26, or may be controlled by the circuit unit 20 (printed circuit board 58) via the ECU 26.
  • first and second current sensors 30a and 30b are provided on a path from the positive output terminal 22a of the battery pack 12 to the positive input terminal 25a of the PCU 13, for example.
  • the circuit unit 20 shuts off the pyrofuse 28.
  • the pyrofuse 28 can be quickly turned off. As a result, the circuit can be cut off more reliably and quickly than, for example, when a relay is placed in a cut-off state.
  • the pyrofuse 28 may be cut off.
  • the pyrofuse 28 may be cut off when an abnormality is detected in both the sensor 30a and the second current sensor 30b. This improves the accuracy of abnormality detection and can effectively prevent unintentional circuit breakage.
  • the printed circuit board 58 that controls the pyrofuse 28 and the first and second current sensors 30a and 30b is fixed to the holding member 60, and the holding member 60 is attached to the case 16. It is assembled to an upper case 38 that constitutes the. That is, the lower surface 63 of the printed circuit board 58 is covered by the holding member 60, and the upper surface 61 of the printed circuit board 58 is covered by the support portion 53 of the upper case 38.
  • the upper holding member of the printed circuit board 58 can be formed integrally with the upper case 38 constituting the case 16, so that, for example, when fixing the printed circuit board to the upper case, both the upper and lower sides are covered by the holding member.
  • the upper holding member can be omitted.
  • the cost can be reduced by the amount of the upper holding member, and the upper case side assembly 50 and, by extension, the power distribution device 10 can be made smaller.
  • the protective member on the upper side of the printed circuit board is constituted by the support part 53 of the upper case 38 (formed integrally with the upper case 38), so that the protective member on the upper side of the printed circuit board, which has been provided conventionally, is This eliminates the need for a second protective member, making it possible to reduce the cost and installation space required for the upper protective member.
  • the printed circuit board 58 cannot be sold or transported in a state where it is held from both upper and lower sides by the upper case 38 and the holding member 60, or in a state where the upper case side assembly 50 is further assembled with the component parts 18. is possible.
  • the circuit component 14 is configured to include a main relay 24, a pyrofuse 28 as an active fuse, and a current sensor 30 (first and second current sensors 30a, 30b).
  • a threshold value When the value exceeds a threshold value, the pyrofuse 28 is cut off. Thereby, the circuit can be more reliably and quickly cut off by bringing the pyrofuse 28 into the cutoff state without increasing the size of the main relay or increasing cost.
  • the circuit unit 20 has an elastic lock piece 74, and the upper case 38 has a lock protrusion 54 that engages with the elastic lock piece 74. Thereby, the circuit unit 20 can be easily and quickly assembled to the upper case 38 by engaging the elastic lock piece 74 and the lock protrusion 54.
  • the printed circuit board 58 of the circuit unit 20 can be attached with a connector 76a provided at the terminal of an electric wire 78 connected to the pyrofuse 28, which is a component 18 of the circuit component 14, and the first and second current sensors 30a, 30b.
  • a board connector 62 is provided.
  • the electric wires 78 connected to each component 18 (pyrofuse 28, first and second current sensors 30a, 30b) are connected to the printed circuit board 58 with a connector, so each component 18 and the printed circuit board 58 are connected to each other. Electrical connection work with the board 58 can be performed with good workability.
  • the circuit unit 20 is held in the upper case 38 near the components 18 (pyrofuse 28, first and second current sensors 30a, 30b) to which it is connected.
  • the length of the electric wire 78 that connects the circuit unit 20 and each component 18 can be shortened, and, for example, the time lag in control by the circuit unit 20 can be kept small, and the influence of noise can be reduced. It is possible to improve the detection accuracy of the current value by the current sensor 30 by suppressing this.
  • the case 16 includes a lower case 36 and an upper case 38.
  • the circuit unit 20 is held in the upper case 38, and the components 18 (pyrofuse 28, first and Electric wires 78 extending from the second current sensors 30a, 30b) are connected to the printed circuit board 58. That is, it is only necessary to connect the electric wires 78 extending upward from each component 18 to the circuit unit 20 held in the upper case 38 located above, and the work of connecting the electric wires 78 can be performed with good workability. can.
  • the holding member 60 has a bottom plate 64 wide enough to cover the entire lower surface 63 of the printed circuit board 58, and a peripheral wall 66 protruding from the outer peripheral edge of the bottom plate 64. This more reliably prevents unintentional contact or electrical continuity between the printed circuit board 58 and other components, so that, for example, the printed circuit board 58 is sold or transported while covered with the upper case 38 and the holding member 60. In this case, damage to the printed circuit board 58 can be more reliably avoided.
  • FIGS. 10 to 15 a power distribution device 80 according to a second embodiment of the present disclosure will be described using FIGS. 10 to 15.
  • the basic structure of the power distribution device 80 of the second embodiment is the same as that of the power distribution device 10 of the first embodiment, but the connection direction of the connector 76a to the printed circuit board 58 is different.
  • the differences between the power distribution device 80 of the second embodiment and the power distribution device 10 of the first embodiment will be explained in detail, and the substantially same members and components as the power distribution device 10 of the first embodiment will be described. Detailed explanations will be omitted by assigning the same reference numerals to the parts in the drawings as in the first embodiment.
  • the structure of the lower case side assembly 44 is the same as that of the first embodiment, but as shown in FIGS. 11 to 14, the structure of the upper case side assembly 82 is the same as that of the embodiment. It is different from 1.
  • the left end portion (support portion 53) of the upper case 84 has terminals of each electric wire 78 connected to the pyrofuse 28, which is the component 18, and the first and second current sensors 30a, 30b.
  • a connector housing 86 is provided to which the provided connector 76a can be attached.
  • three connector housings 86 each having a substantially rectangular concave shape open upward and are spaced apart from each other in the front and back direction, and are integrally molded with the upper case 84. .
  • each connector housing 86 As also shown in FIGS. 14 and 15, in the bottom wall of each connector housing 86, a plurality of terminal holes 88, through which a plurality of board terminals 98 of a circuit unit 92 to be described later are inserted, are formed. It is provided.
  • a substantially rectangular frame-shaped holding frame portion 52 that protrudes downward is provided on the lower surface of the left end portion of the upper bottom wall portion 46 constituting the support portion 53.
  • a plurality of lock protrusions 54 as elastic engagement parts are formed on the outer peripheral surface of the holding frame part 52.
  • the holding frame portion 52 of the second embodiment is not provided with an opening 56, and the holding frame portion 52 is provided in an annular shape over the entire circumference in the circumferential direction.
  • a positioning recess 90 that opens downward is formed at a position away from each connector housing 86 at the left end portion of the upper bottom wall portion 46 .
  • the circuit unit 92 assembled to the upper case 84 in the upper case side assembly 82 includes the components 18 (pyrofuse 28, first and second current sensors 30a, 30b) connected to the circuit unit 92. ), and a holding member 96 that covers the lower surface 63, which is one surface of the printed circuit board 94, and holds the printed circuit board 94.
  • the printed circuit board 94 of the second embodiment has a plurality of board terminals 98 that protrude upward. These board terminals 98 are provided through the printed circuit board 94 and can be electrically connected to circuits provided on the upper surface 61 and/or lower surface 63 of the printed circuit board 94. There is.
  • the plurality of board terminals 98 are provided at three locations spaced apart in the front-rear direction on the left end of the printed circuit board 94, and the plurality of board terminals 98 are arranged in alignment in the front-back direction and the left-right direction at each location. There is.
  • the holding member 96 of the second embodiment has the same structure as the holding member 60 of the first embodiment, and includes a bottom plate 64 having a substantially rectangular flat plate shape and a peripheral wall 66 projecting upward from the outer peripheral edge of the bottom plate 64. There is. Further, the bottom plate 64 is provided with a positioning convex portion 100 that projects upward.
  • the lower case side assembly 44 is completed by the same process as in the first embodiment.
  • the printed circuit board 94 is stacked on the bottom plate 64 of the holding member 96 from above and fixed with screws.
  • the circuit unit 92 is completed.
  • each board terminal 98 projects upward from the printed circuit board 94, and the positioning convex portion 100 penetrates the printed circuit board 94 and projects upward.
  • This circuit unit 92 is approached from below to an upper case 84 to which the precharge relay 32, precharge resistor 34, bus bars and wiring for electrically connecting them are fixed, and the circuit unit 92 is connected to each lock protrusion 54.
  • Each elastic lock piece 74 is engaged.
  • the positioning protrusion 100 projecting upward from the circuit unit 92 is inserted into the positioning recess 90 in the upper case 84, and each board terminal 98 is inserted into each terminal hole 88 in the upper case 84.
  • each board terminal 98 and each terminal hole 88 are aligned, and each board terminal 98 is inserted into each terminal hole 88 without substantially shifting. be done.
  • the holding member 96 of the circuit unit 92 is held by the upper case 84, and the circuit unit 92 is assembled to the upper case 84. Thereby, the upper case side assembly 82 is completed.
  • each connector housing 86 is open upward, and each board terminal 98 is housed within each connector housing 86 and projects upward.
  • each board terminal 98 in the two connector housings 86 in the upper case side assembly 82 is electrically connected to the pyrofuse 28 and the first current sensor 30a, respectively. Further, each board terminal 98 in the remaining connector housing 86 in the upper case side assembly 82 and the second current sensor 30b are electrically connected to the ECU 26. Thereby, the printed circuit board 94 in the circuit unit 92, the pyrofuse 28, which is the component 18 constituting the circuit component 14, and the first and second current sensors 30a, 30b are electrically connected. As a result, the power distribution device 80 is completed.
  • each terminal of the electric wire 78 connected to each component 18 is electrically connected to each board terminal 98 housed in each connector housing 86.
  • a connector 76a connectable to is provided. That is, by attaching each connector 76a from above to each connector housing 86 that opens upward in the upper case side assembly 82, the printed circuit board 94 and each component 18 (pyrofuse 28, first and second Current sensors 30a, 30b) are electrically connected.
  • the power distribution device 80 of the second embodiment having the above-described structure is different from the power distribution device 10 of the first embodiment in that each component 18 (pyrofuse 28, first and second current sensors 30a, Since the only difference is the insertion direction of the connector 76a in the connector connection between the connector 30b) and the printed circuit board 94, the same effects as in the first embodiment can be achieved.
  • each connector housing 86 that accommodates each board terminal 98 is formed integrally with the upper case 84, the board connector is separate from the upper case 38 as in the first embodiment. Since there is no need to separately prepare the board connector 62 and the board connector 62 is not provided, the space required for assembling the circuit unit 92 in the upper case 84 can be kept small. Thereby, for example, the size of the step 51 provided on the upper bottom wall portion 46 of the upper case 84 can be kept small, and it is also possible to reduce the size of the upper case 84 and the upper case side assembly 82.
  • a power distribution device 110 according to Embodiment 3 of the present disclosure will be described using FIGS. 16 to 18.
  • the basic structure of the power distribution device 110 of the third embodiment is the same as that of the power distribution device 10 of the first embodiment, except that the circuit unit 112 is configured without the holding member 60.
  • the support portion 116 that is integrally formed with the case 114 and supports the printed circuit board 115 covers both surfaces (the left surface 118 and the right surface 120) of the printed circuit board 115.
  • the printed circuit board 115 is placed inside the support section 116.
  • members and parts that are substantially the same as those in Embodiment 1 are designated by the same reference numerals as in Embodiment 1 in the drawings, and detailed description thereof will be omitted.
  • the support portion 116 is provided at the left end portion of the upper case 122.
  • the support portion 116 of the third embodiment has a rectangular box shape that opens upward as a whole, and the upper opening portion 124 of the support portion 116 opens to the left end portion of the upper bottom wall portion 46 of the upper case 122. That is, the support part 116 includes a bottom part 126 and a substantially cylindrical peripheral wall part 128 that projects upward from the bottom part 126. is configured.
  • the front-rear dimension of the support portion 116 is smaller than the facing distance in the front-rear direction of the front and rear walls that constitute the upper peripheral wall portion 48, and the support portion 116 is located on the inner side of the front and rear walls that constitute the upper peripheral wall portion 48. It is provided spaced apart from the walls on both the front and rear sides.
  • three board connectors 62 are mounted on the upper end of the left surface 118, which is one surface of the printed circuit board 115.
  • a circuit unit 112 constituted by such a printed circuit board 115 is inserted into the support part 116 from an upper opening 124 in the support part 116. Since the upper part of the internal space of the support part 116 accommodates each board connector 62, it is made larger than the lower part. Specifically, the left-right dimension of the internal space of the support part 116 is larger than that of the lower part. The upper part is larger than the .
  • the circuit unit 112 (printed circuit board 115) is fixed to the support part 116 by screwing.
  • the printed circuit board 115 is screwed to the support portion 116 from the left side. That is, a screw hole 132 into which the screw 130 is inserted is formed in the printed circuit board 115, and a screw hole 134 into which the screw 130 is screwed is formed in the right inner surface of the support portion 116. Further, a through hole 136 is formed in the left side wall of the support portion 116 (peripheral wall portion 128), passing through in the left-right direction.
  • the printed circuit board 115 is screwed at four locations, and four screw holes 132, four screw holes 134, and four through holes 136 are formed at corresponding positions.
  • the support part When assembling the upper case side assembly 138 of the third embodiment, the support part is attached to the upper case 122 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring for electrically connecting them are fixed.
  • the circuit unit 112 is inserted through the upper opening 124 of 116 .
  • the lower end of the printed circuit board 115 comes into contact with the bottom 126 of the support portion 116, so that each screw hole 132, each screw hole 134, and each through hole 136 are aligned.
  • the circuit unit 112 is fixed to the support part 116 by inserting each screw 130 through each through hole 136 and each screw hole 132 and screwing into each screw hole 134. .
  • each through hole 136 may be formed to have a larger size than the head of each screw 130, and the head of each screw 130 may be accommodated within the support portion 116. In short, each through hole 136 may function as a service hole for screwing each screw 130 into each screw hole 134.
  • the circuit unit 112 (printed circuit board 115) is covered and supported by the support part 116 integrally formed with the upper case 122, so the same as in the first embodiment is achieved. effects can be demonstrated.
  • the holding member 60 is not required, and both sides (the left side 118 and the right side 120) of the printed circuit board 115 are covered and protected by the support part 116.
  • the number of parts can be reduced compared to Embodiment 1 and Embodiment 2, and the size of the upper case side assembly 138 and, by extension, the power distribution device 110 can be reduced by the amount of the holding member 60.
  • the printed circuit board 115 can be sold, transported, etc. while being fixed to the upper case 122 and protected by the support part 116.
  • the upper case 122 itself can be used as a protection member for the printed circuit board 115.
  • FIGS. 19 to 21 show the overall view of the power distribution device of the fourth embodiment.
  • the overall view of the power distribution device of the fourth embodiment is the same as that of the third embodiment, so illustration is omitted, and FIGS. 19 to 21 show the upper case side assembly constituting the power distribution device of the fourth embodiment. 140 and the upper case 142 will be shown and explained.
  • the upper case side assembly 140 and the upper case 142 of the fourth embodiment also have the same structure as the third embodiment, but in the fourth embodiment, the lock protrusion 144 as an elastic engagement part provided on the upper case 142
  • the printed circuit board 115 is fixed to the support portion 146.
  • a rectangular box-shaped support portion 146 that opens upward is integrally provided at the left end portion of the upper case 142. That is, the support part 146 of the fourth embodiment also includes a bottom part 126 and a substantially cylindrical peripheral wall part 128 that projects upward from the bottom part 126, and the upper opening part 124 of the support part 146 is formed on the upper bottom wall of the upper case 142. It is open to the section 46. Further, the bottom portion 126 of the support portion 146 is provided with a substantially box-shaped tongue accommodating portion 148 that opens upward, and accommodates an elastic tongue 160 provided at the lower end of the printed circuit board 115, which will be described later. ing.
  • This tongue piece accommodating part 148 is provided continuously from the right inner surface of the support part 146.
  • the tongue piece accommodating part 148 is provided so as to straddle the bottom part 126 and the right inner surface of the support part 146.
  • a pair of tongue accommodating portions 148, 148 are provided spaced apart from each other in the front-rear direction.
  • the aforementioned lock protrusion 144 is provided on the left side wall portion of each of these tongue accommodating portions 148 . That is, each lock protrusion 144 protrudes upward from the bottom part 126 and can be elastically deformed in the left-right direction, and the upper end of each lock protrusion 144 has an engaging claw part 150 that protrudes into the tongue housing part 148. It is provided.
  • guide grooves are provided on the inner surfaces of both sides of the support part 146 in the front and back directions to guide the movement of the circuit unit 152 (printed circuit board 115) from above to below when the circuit unit 152 is inserted into the support part 146 from above.
  • 154 are provided.
  • the guide groove portion 154 extends in the vertical direction, and when the circuit unit 152 (printed circuit board 115) is inserted into the support portion 146 from above, both ends of the printed circuit board 115 in the front and back direction are inserted into the respective guide grooves on both sides in the front and rear direction. 154.
  • accommodation recesses 156 that open inward in the front and back direction are provided at the upper end portions of the inner surfaces on both sides of the support portion 146 in the front and back directions.
  • An outward protrusion 166 is accommodated.
  • Projections 158 that protrude inwardly and extend in the vertical direction are provided on the inner surfaces of each accommodation recess 156 on both sides in the left-right direction. It is inserted into the recess 156 in a press-fit state.
  • three board connectors 62 are mounted on the printed circuit board 115 constituting the circuit unit 152 of the fourth embodiment at the upper end of the left surface 118. Furthermore, an elastic tongue piece 160 that can be elastically deformed in the thickness direction (left-right direction) of the printed circuit board 115 is provided at the lower end of the printed circuit board 115. Slits 162 extending vertically from the lower end of the printed circuit board 115 are provided on both sides of the elastic tongue piece 160 in the front-rear direction, and the provision of these slits 162 allows the elastic tongue piece 160 to be elastically deformed in the left-right direction. ing. In the fourth embodiment, a pair of elastic tongues 160, 160 are provided spaced apart from each other in the front-rear direction.
  • An engagement hole 164 penetrating in the thickness direction is formed at the protruding tip (lower end) of each elastic tongue piece 160. Further, substantially rectangular outward protrusions 166 that protrude outward in the left-right direction are provided at both left-right end portions of the upper end of the printed circuit board 115 .
  • the support part When assembling the upper case side assembly 140 of the fourth embodiment, the support part is attached to the upper case 142 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring that electrically connect them are fixed.
  • the circuit unit 152 is inserted through the upper opening 124 of 146 .
  • both end portions of the printed circuit board 115 in the front and rear directions are inserted into the respective guide grooves 154 on both sides in the front and back direction, and the movement of the circuit unit 152 from above to below is guided.
  • each elastic tongue piece 160 at the lower end of the printed circuit board 115 is accommodated in each tongue piece housing part 148, as shown in FIG.
  • each engagement claw portion 150 and each engagement hole 164 engage with each other within the tongue piece accommodating portion 148 . Further, each outwardly protruding portion 166 that protrudes from the printed circuit board 115 in both directions in the front and back direction is accommodated in each accommodating recess 156 on the inner surface of the support portion 146 in a substantially press-fit state. As a result, the circuit unit 152 is fixed to the support portion 146, and the upper case side assembly 140 is assembled. Then, a lower case side assembly 44 similar to that of the first embodiment is fixed to this upper case side assembly 140, so that the power distribution device of the fourth embodiment is manufactured.
  • the power distribution device of the fourth embodiment differs from the third embodiment only in the method of fixing the circuit unit 152 to the support portion 146, and therefore can exhibit the same effects as the third embodiment.
  • the circuit unit 112 was fixed to the support part 116 with screws, but in the fourth embodiment, the engagement between each engagement claw part 150 and each engagement hole 164, and the The circuit unit 152 is fixed to the support portion 146 by press-fitting the protrusion portion 166 into each accommodation recess 156 . Therefore, there is no need to provide separate members for fixing, such as the screws 130 in Embodiment 3, and the circuit unit 152 is fixed by inserting it into the support part 146, which reduces the number of parts and improves assembly efficiency. This will lead to improvements in
  • the circuit units 112 and 152 were inserted into the support parts 116 and 146 from above, but in the fifth embodiment, the circuit unit 174 was inserted into the support part 172 from below.
  • the support portion 172 in the fifth embodiment has a substantially rectangular box shape including a bottom portion 126 and a peripheral wall portion 128 as in the third and fourth embodiments, but the bottom portion 126 has a lower opening for inserting the circuit unit 174. 176 are provided.
  • the support portion 172 that supports the circuit unit 174 (printed circuit board 177) is integrally formed at the left end portion of the upper case 178.
  • three connector housings 86 each having a substantially rectangular concave shape are integrally formed with upward openings, as in the second embodiment. These connector housings 86 are spaced apart from each other in the front-rear direction, and a plurality of terminal holes 88 are provided in the bottom wall of each connector housing 86 so as to pass through the connector housings 86 in the vertical direction.
  • a plurality of board terminals 98 are mounted on the printed circuit board 177 of the circuit unit 174 and protrude upward, and when the circuit unit 174 is fixed in the support part 172, each terminal hole provided in the support part 172 A plurality of board terminals 98 in the circuit unit 174 are inserted through the terminals 88 .
  • the circuit unit 174 inserted into the support portion 172 is fixed by screwing, as in the third embodiment. That is, each screw hole 132 into which each screw 130 is inserted is formed in the printed circuit board 177 so as to pass through the printed circuit board 177 in the board thickness direction (horizontal direction), and on the right inner surface of the support portion 172, Each screw hole 134 into which each screw 130 is screwed is formed. Further, in the left side wall of the support portion 172 (peripheral wall portion 128), through holes 136 having a function as a service hole are provided to penetrate in the left-right direction. In addition, each guide groove part 154 similar to Embodiment 4 may be provided in the inner surface of the support part 172 on both sides in the front-back direction so as to extend in the vertical direction.
  • the support part When assembling the upper case side assembly 180 of the fifth embodiment, the support part is attached to the upper case 178 to which the precharge relay 32, the precharge resistor 34, the bus bar and wiring, etc. that electrically connect them are fixed.
  • the circuit unit 174 is inserted through the lower opening 176 of 172 . Then, for example, the upper end of the printed circuit board 177 comes into contact with the upper wall of the support section 172, thereby aligning each screw hole 132, each screw hole 134, and each through hole 136, respectively. In this state, the circuit unit 174 is fixed to the support portion 172 by inserting each screw 130 through each through hole 136 and each screw hole 132 and screwing into each screw hole 134. .
  • the circuit unit 174 by inserting the circuit unit 174 into the support portion 172, the plurality of board terminals 98 in the circuit unit 174 are inserted into each terminal hole 88 provided in the support portion 172.
  • the upward movement of the circuit unit 174 within the support portion 172 is guided by each guide groove portion 154, insertion of the board terminal 98 into each terminal hole 88 can be stably achieved.
  • the power distribution device 170 of the fifth embodiment differs from the third embodiment only in the method of inserting the circuit unit 174 into the support portion 172, and thus can exhibit the same effects as the third embodiment. Further, as in the second embodiment, since each connector housing 86 that accommodates each board terminal 98 is integrally formed with the support portion 172 in the upper case 178, the board connector 62 as in the third embodiment is prepared separately. Since the board connector 62 is not provided, the upper case side assembly 180 and, by extension, the power distribution device 170 can be downsized.
  • FIGS. 25 to 27 show the overall view of the power distribution device of the sixth embodiment.
  • the overall view of the power distribution device of the sixth embodiment is the same as that of the fifth embodiment, so illustration is omitted, and FIGS. 25 to 27 show the upper case side assembly constituting the power distribution device of the sixth embodiment.
  • 190 and upper case 192 will be shown and explained.
  • the upper case side assembly 190 and the upper case 192 of the sixth embodiment also have the same structure as the fifth embodiment, but in the sixth embodiment, the lock protrusion 194 as an elastic engagement part provided on the upper case 192
  • a printed circuit board 177 is fixed to the support portion 196.
  • a support portion 196 in the shape of a rectangular box that opens downward is integrally provided at the left end portion of the upper case 192. That is, the support portion 196 of the sixth embodiment also includes a bottom portion 126 and a substantially cylindrical peripheral wall portion 128 projecting upward from the bottom portion 126, and a lower opening 176 in the support portion 196 is provided in the bottom portion 126. . Further, a lock protrusion 194 is provided to protrude downward from the right inner surface of the support portion 196 so as to be elastically deformable in the left-right direction. An engaging claw portion 198 is provided. In the sixth embodiment, a pair of lock protrusions 194, 194 are provided spaced apart from each other in the front-rear direction.
  • three connector housings 86 having substantially rectangular concave shapes are integrally formed at the upper end of the support portion 196 with upward openings.
  • guide grooves 154 similar to those in the fourth embodiment are provided on the inner surfaces of the support portion 196 on both sides in the front-rear direction and extend in the up-down direction.
  • the support part When assembling the upper case side assembly 190 of the sixth embodiment, the support part is attached to the upper case 192 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring for electrically connecting them are fixed.
  • the circuit unit 200 is inserted through the lower opening 176 of 196 .
  • both end portions of the printed circuit board 177 in the front-back direction are inserted into the guide grooves 154 on both sides in the front-back direction, and the movement of the circuit unit 200 from below to above is guided.
  • the circuit unit 200 is inserted through the lower opening 176 of the support section 196, the upper end of the printed circuit board 177 comes into contact with each lock protrusion 194, causing each lock protrusion 194 to elastically deform to the right.
  • each engagement claw part 198 of each lock protrusion 194 rides over the lower edge of the printed circuit board 177, so that each lock protrusion 194 is elastically restored and deformed.
  • each engaging claw portion 198 engages with the lower edge of the printed circuit board 177.
  • the circuit unit 200 is inserting the circuit unit 200 into the support part 196, the plurality of board terminals 98 in the circuit unit 200 are inserted into each terminal hole 88 provided in the support part 196.
  • upward movement of the circuit unit 200 within the support portion 196 is guided by each guide groove portion 154, so that insertion of the board terminal 98 into each terminal hole 88 can be stably achieved.
  • the circuit unit 200 is fixed to the support portion 196, and the upper case side assembly 190 is assembled.
  • a lower case assembly 44 similar to that of the first embodiment is fixed to the upper case assembly 190 to manufacture the power distribution device of the sixth embodiment.
  • the power distribution device of the sixth embodiment differs from the fifth embodiment only in the method of fixing the circuit unit 200 to the support portion 196, and therefore can exhibit the same effects as the fifth embodiment.
  • the circuit unit 174 was fixed to the support part 172 with screws, but in the sixth embodiment, the engagement between each engagement claw part 198 and the lower edge of the printed circuit board 177,
  • the circuit unit 200 is fixed to the support portion 196 by inserting the printed circuit board 177 into the guide groove 154 and inserting each board terminal 98 into each terminal hole 88 . Therefore, since the circuit unit 200 is fixed by inserting it into the support part 196 without providing a separate fixing member like each screw 130 in the fifth embodiment, the number of parts can be reduced and assembly efficiency can be improved. This will lead to improvements in
  • Embodiment 1 to Embodiment 6 have been described in detail as specific examples of the present disclosure, the present disclosure is not limited by this specific description. Modifications, improvements, etc. within the scope of achieving the objectives of the present disclosure are included in the present disclosure. For example, the following modifications of the embodiment are also included in the technical scope of the present disclosure.
  • the circuit units 20, 92, 112, 152, 174, 200 are connected to the pyrofuse 28 and the first and second current sensors 30a, 30b, and the first and second current sensors 30a, When a current value exceeding a threshold value is detected at 30b, the pyrofuse 28 is cut off, but the power distribution device of the present disclosure is not limited to this embodiment. That is, as a component of the circuit structure connected to the circuit unit, for example, instead of or in addition to the current sensor as in the above embodiment, a voltage sensor, a temperature sensor, etc. may be provided. A combination of at least two of sensors, temperature sensors, etc. may be employed.
  • the circuit unit may be capable of not only controlling components but also monitoring the status of the power distribution equipment, such as measuring the voltage in the power path or the temperature inside the battery pack or case. Alternatively, it may be possible to monitor whether or not it is in an energized state (or an insulated state).
  • the component is relatively attached to a relay or fuse that is a heat generating component.
  • the temperature sensor is relatively attached to a relay or fuse that is a heat generating component.
  • the time lag of monitoring and the influence of noise can be suppressed, and the temperature inside the case can be measured (monitored) more accurately. be able to.
  • the circuit does not necessarily have to be cut off by an active fuse, and the power distribution device of the present disclosure Active fuses are not essential in the device. Furthermore, even if the circuit is cut off by an active fuse when an abnormality is detected, the active fuse does not have to be a pyrofuse, but can be any element that can be disconnected by an external signal.
  • An active fuse may be configured using a transistor (MOSFET).
  • MOSFET transistor
  • the number of current sensors is not limited to two, and may be one, three or more. The location of the current sensor on the power path is not limited, and the current sensor may be provided closer to the output terminal of the battery pack than the main relay, for example.
  • the circuit units 20, 92, 152, 200 engage with the lock protrusions 54, 144, 194 as elastic engagement portions, so that the supporting portions 53, 146 , 196, but it may be fixed with bolts or screws as in the third and fifth embodiments, or may be fixed by press-fitting, for example.
  • the elastic engagement portion may engage with the holding member as in Embodiments 1 and 2, and when a holding member is not provided, as in Embodiment 4, The elastic engagement portion may engage with the printed circuit board as shown in 6.
  • the circuit units 20 and 92 had the elastic locking pieces 74, and the upper cases 38 and 84 (supporting parts 53) had the locking protrusions 54.
  • the holding member may be provided with a locking protrusion, and the support portion of the upper case may be provided with an elastic locking piece.
  • the lock protrusion may be provided on the circuit unit (printed circuit board), and the portion that engages with the lock protrusion may be provided on the support portion of the upper case.
  • the printed circuit board 58 is placed inside the support section 53 by assembling the support section 53 and the holding member 60 with the printed circuit board 58 sandwiched between them, but the opening on the left side
  • the printed circuit board may be inserted from the left side into the support section having a section, and the printed circuit board and the support section may be fixed using bolts or elastic engagement sections.
  • the holding members 60 and 96 include the bottom plate 64 that covers the entire lower surface 63 of the printed circuit boards 58 and 94, and the peripheral wall 66 that projects upward from the outer peripheral edge of the bottom plate 64.
  • the bottom plate of the holding member may partially cover a predetermined area of the lower surface of the printed circuit board, or the peripheral wall may not be provided.
  • the power distribution devices 10, 80, 110, and 170 were housed in the casing of the battery pack 12, but the power distribution device according to the present disclosure includes, for example, the casing of the battery pack.
  • a lid body that is provided near the casing body and forms the casing may cover the upper side of the power distribution device together with the casing body.
  • Power distribution device (Embodiment 1) 12 Battery pack (power supply) 13 PCU (vehicle load) 14 Circuit component 16 Case 18 Components 20 Circuit unit 22a (On the positive side of the battery pack) Output terminal 22b (On the negative side of the battery pack) Output terminal 24 Main relay 24a (On the positive side) Main relay 24b (On the negative side ) Main relay 25a (positive side of PCU) Input terminal 25b (negative side of PCU) Input terminal 26 ECU 28 Pyro fuse (active fuse) 30 Current sensor 30a First current sensor 30b Second current sensor 32 Precharge relay 34 Precharge resistor 36 Lower case 38 Upper case 39a Lock claw portion 39b Lock frame 40 Bottom wall portion 42 Lower peripheral wall portion 44 Lower case side assembly 46 Upper bottom Wall portion 48 Upper peripheral wall portion 49 Left opening 50 Upper case side assembly 51 Step 52 Holding frame portion 53 Support portion 54 Lock protrusion (elastic engagement portion) 56 Opening 58 Printed circuit board 60 Holding member 61 Top surface (one surface of printed circuit board) 62 Board connector 63 Bottom surface (other

Abstract

Disclosed is a power-supply electric power distributing device in which a circuit unit that performs at least one of control and monitoring of component parts accommodated internally, can be mounted in a stable manner with a small number of parts.　A power-supply electric power distributing device 10 that is connected to a power supply 12 for traction driving of a vehicle comprises a circuit configuration body 14 that distributes electric power from the power supply 12 to a vehicle load 13; a case 16 that accommodates the circuit configuration body 14; and a circuit unit 20 that is connected to at least one component part 18 of the circuit configuration body 14 and that performs at least one of control and monitoring of the component part 18. The circuit unit 20 includes a printed circuit board 58 on which is mounted a circuit that is capable of executing at least one of control and monitoring. A support portion 53 that supports the printed circuit board 58 is formed covering at least one face 61 of the printed circuit board 58, integrally with the case 16. The printed circuit board 58 is disposed within the support portion 53.

Description

電源用配電装置Power distribution equipment
　本開示は、電源用配電装置に関するものである。 The present disclosure relates to a power distribution device for power supply.
　従来から、電気自動車やハイブリッド車等において、車両の走行駆動用の電源である電池パック等の内部や近傍には、電池パックと車両負荷との間の配電を担う電源用配電装置が搭載されて接続されている。例えば、特許文献１には、電源用配電装置として、リレーや電流センサ等を備えた電気接続箱を搭載した例が示されている。特許文献１に例示される電源用配電装置は、電池パックと車両負荷との間の電力経路に異常な大電流が流れたときや、車両の衝突が検出された際に、リレーを遮断状態に切り替えることで、車両を保護することができる。 Conventionally, in electric vehicles, hybrid vehicles, etc., a power distribution device that distributes power between the battery pack and the vehicle load has been installed inside or near the battery pack, etc., which is the power source for driving the vehicle. It is connected. For example, Patent Document 1 discloses an example in which an electrical connection box equipped with a relay, a current sensor, etc. is mounted as a power distribution device. The power supply distribution device exemplified in Patent Document 1 shuts off the relay when an abnormally large current flows in the power path between the battery pack and the vehicle load or when a vehicle collision is detected. By switching, you can protect your vehicle.
　ところで、リレーの電流容量が小さい場合、リレーに閾値よりも大きな電流が流れると、リレーの接点間にアーク放電が生じてリレーが遮断されないおそれがある。それゆえ、配電装置の動作信頼性の向上のため、リレーを大型化することが考えられるが、電源用配電装置の大型化やコスト高を伴うため、好ましくない。そこで、特許文献２には、新たにパイロヒューズやパイロヒューズの駆動制御部等を採用することで、異常電流検出時の速やかな回路遮断を実現し、リレーの大型化を回避する構造が提案されている。 By the way, if the current capacity of the relay is small and a current larger than the threshold flows through the relay, there is a risk that arc discharge will occur between the contacts of the relay and the relay will not be shut off. Therefore, in order to improve the operational reliability of the power distribution device, it is conceivable to increase the size of the relay, but this is not preferable because it increases the size of the power distribution device and increases the cost. Therefore, Patent Document 2 proposes a structure that implements a new pyrofuse, a pyrofuse drive control unit, etc., to quickly shut off the circuit when an abnormal current is detected, and avoid increasing the size of the relay. ing.
特開２０２０－１８７９６８号公報JP2020-187968A 特開２０２１－１５５９６１号公報Japanese Patent Application Publication No. 2021-155961
　ところが、特許文献２の構造では、部品の増加により電源用配電装置のスペースが制限される。それゆえ、配電装置の大型化を避けるために、駆動制御部を別体の部品として新たなケースに収容する必要等が生じていた。 However, in the structure of Patent Document 2, the space for the power distribution device is limited due to the increase in the number of components. Therefore, in order to avoid increasing the size of the power distribution device, it has become necessary to house the drive control section as a separate component in a new case.
　そこで、内部に収容された構成部品の制御および監視の少なくとも一方を行う回路ユニットを、少ない部品点数で安定して搭載できる、電源用配電装置を開示する。 Therefore, a power distribution device is disclosed in which a circuit unit that controls and/or monitors the components housed inside can be stably mounted with a small number of components.
　本開示の電源用配電装置は、車両の走行駆動用の電源に接続される電源用配電装置であって、電源からの電力を車両負荷に分配する回路構成体と、前記回路構成体を収容するケースと、前記回路構成体の少なくとも１つの構成部品に接続されて、前記構成部品の制御および監視の少なくとも一方を行う回路ユニットと、を備え、前記回路ユニットは、前記制御および前記監視の少なくとも一方を実行可能な回路が実装されたプリント基板を有し、前記プリント基板の少なくとも一方の面を覆って前記プリント基板を支持する支持部が前記ケースと一体的に形成されており、前記支持部の内部に前記プリント基板が配置されている、ものである。 A power distribution device of the present disclosure is a power distribution device connected to a power source for driving a vehicle, and includes a circuit component that distributes power from the power source to a vehicle load, and a circuit component that accommodates the circuit component. a case; and a circuit unit connected to at least one component of the circuit structure to perform at least one of controlling and monitoring the component, the circuit unit controlling at least one of the controlling and monitoring the component. a printed circuit board on which a circuit capable of executing The printed circuit board is placed inside.
　本開示によれば、内部に収容された構成部品の制御および監視の少なくとも一方を行う回路ユニットを、少ない部品点数で安定して搭載できる、電源用配電装置を提供できる。 According to the present disclosure, it is possible to provide a power distribution device that can stably mount a circuit unit that controls and/or monitors components housed inside with a small number of components.
図１は、実施形態１に係る電源用配電装置を示す斜視図である。FIG. 1 is a perspective view showing a power distribution device according to a first embodiment. 図２は、図１に示された電源用配電装置における電気的構成を概略的に示す図である。FIG. 2 is a diagram schematically showing the electrical configuration of the power distribution device shown in FIG. 図３は、図１に示された電源用配電装置をアッパケース側組立体とロアケース側組立体とに分解した状態で示す分解斜視図である。FIG. 3 is an exploded perspective view showing the power distribution device shown in FIG. 1 in an exploded state into an upper case assembly and a lower case assembly. 図４は、図３に示されたロアケース側組立体を示す平面図である。4 is a plan view showing the lower case assembly shown in FIG. 3. FIG. 図５は、図３に示されたアッパケース側組立体における分解斜視図である。5 is an exploded perspective view of the upper case side assembly shown in FIG. 3. FIG. 図６は、図３に示されたアッパケース側組立体における要部を拡大して示す底面図である。FIG. 6 is an enlarged bottom view of essential parts of the upper case side assembly shown in FIG. 3. FIG. 図７は、図６におけるＶＩＩ－ＶＩＩ断面図である。FIG. 7 is a sectional view taken along line VII-VII in FIG. 図８は、図３に示されたアッパケース側組立体を構成するアッパケースを底面側から示す斜視図である。FIG. 8 is a perspective view showing the upper case constituting the upper case side assembly shown in FIG. 3 from the bottom side. 図９は、図１に示された電源用配電装置を構成する保持部材を示す斜視図である。FIG. 9 is a perspective view showing a holding member constituting the power distribution device shown in FIG. 1. FIG. 図１０は、実施形態２に係る電源用配電装置を示す斜視図である。FIG. 10 is a perspective view showing a power distribution device according to the second embodiment. 図１１は、図１０に示された電源用配電装置を構成するアッパケース側組立体を示す斜視図である。FIG. 11 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 10. 図１２は、図１１に示されたアッパケース側組立体における分解斜視図である。FIG. 12 is an exploded perspective view of the upper case side assembly shown in FIG. 11. 図１３は、図１１に示されたアッパケース側組立体における要部を拡大して示す平面図である。FIG. 13 is a plan view showing an enlarged main part of the upper case side assembly shown in FIG. 11. FIG. 図１４は、図１３におけるＸＩＶ－ＸＩＶ断面図である。FIG. 14 is a sectional view taken along line XIV-XIV in FIG. 13. 図１５は、図１１に示されたアッパケース側組立体を構成するアッパケースを示す底面図である。FIG. 15 is a bottom view of the upper case that constitutes the upper case assembly shown in FIG. 11. 図１６は、実施形態３に係る電源用配電装置を示す斜視図である。FIG. 16 is a perspective view showing a power distribution device according to the third embodiment. 図１７は、図１６に示された電源用配電装置を構成するアッパケース側組立体を示す斜視図である。FIG. 17 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 16. 図１８は、図１７に示されたアッパケース側組立体における分解斜視図である。FIG. 18 is an exploded perspective view of the upper case assembly shown in FIG. 17. 図１９は、実施形態４に係る電源用配電装置を構成するアッパケース側組立体を示す縦断面図であって、図２０におけるＸＩＸ－ＸＩＸ断面に相当する図である。FIG. 19 is a longitudinal cross-sectional view showing the upper case side assembly constituting the power distribution device according to the fourth embodiment, and is a view corresponding to the XIX-XIX cross section in FIG. 20. 図２０は、図１９に示されたアッパケース側組立体における分解斜視図である。FIG. 20 is an exploded perspective view of the upper case side assembly shown in FIG. 19. 図２１は、図１９に示されたアッパケース側組立体を構成するアッパケースを示す縦断面図であって、図１９におけるＸＸＩ－ＸＸＩ断面に相当する図である。FIG. 21 is a longitudinal sectional view showing the upper case constituting the upper case side assembly shown in FIG. 19, and is a view corresponding to the XXI-XXI section in FIG. 19. 図２２は、実施形態５に係る電源用配電装置を示す斜視図である。FIG. 22 is a perspective view showing a power distribution device according to the fifth embodiment. 図２３は、図２２に示された電源用配電装置を構成するアッパケース側組立体を示す斜視図である。FIG. 23 is a perspective view showing an upper case side assembly that constitutes the power distribution device shown in FIG. 22. 図２４は、図２３に示されたアッパケース側組立体における分解斜視図である。FIG. 24 is an exploded perspective view of the upper case side assembly shown in FIG. 23. 図２５は、実施形態６に係る電源用配電装置を構成するアッパケース側組立体を示す縦断面図であって、図２６におけるＸＸＶ－ＸＸＶ断面に相当する図である。FIG. 25 is a longitudinal cross-sectional view showing the upper case side assembly constituting the power distribution device according to the sixth embodiment, and is a view corresponding to the XXV-XXV cross section in FIG. 26. 図２６は、図２５に示されたアッパケース側組立体における分解斜視図である。FIG. 26 is an exploded perspective view of the upper case side assembly shown in FIG. 25. 図２７は、図２５に示されたアッパケース側組立体を構成するアッパケースを示す縦断面図であって、図２５におけるＸＸＶＩＩ－ＸＸＶＩＩ断面に相当する図である。FIG. 27 is a longitudinal sectional view showing the upper case constituting the upper case side assembly shown in FIG. 25, and is a view corresponding to the XXVII-XXVII section in FIG. 25.
＜本開示の実施形態の説明＞
　最初に、本開示の実施態様を列記して説明する。
　本開示の電源用配電装置は、
（１）車両の走行駆動用の電源に接続される電源用配電装置であって、電源からの電力を車両負荷に分配する回路構成体と、前記回路構成体を収容するケースと、前記回路構成体の少なくとも１つの構成部品に接続されて、前記構成部品の制御および監視の少なくとも一方を行う回路ユニットと、を備え、前記回路ユニットは、前記制御および前記監視の少なくとも一方を実行可能な回路が実装されたプリント基板を有し、前記プリント基板の少なくとも一方の面を覆って前記プリント基板を支持する支持部が前記ケースと一体的に形成されており、前記支持部の内部に前記プリント基板が配置されている、ものである。 <Description of embodiments of the present disclosure>
First, embodiments of the present disclosure will be listed and described.
The power distribution device of the present disclosure includes:
(1) A power distribution device connected to a power source for driving a vehicle, which includes a circuit component that distributes power from the power source to a vehicle load, a case that accommodates the circuit component, and the circuit component. a circuit unit connected to at least one component of the body to perform at least one of controlling and monitoring the component, the circuit unit including a circuit capable of performing at least one of the control and the monitoring. A support part having a mounted printed circuit board and supporting the printed circuit board by covering at least one surface of the printed circuit board is formed integrally with the case, and the printed circuit board is inside the support part. something that is placed.
　本開示の電源用配電装置によれば、回路構成体の少なくとも１つの構成部品に接続されて、当該部品の制御や監視を行う回路ユニットが、プリント基板を有しており、このプリント基板の少なくとも一方の面を覆ってプリント基板を支持する支持部がケースと一体的に形成されている。これにより、プリント基板の両面を覆うような筐体を必要とせず、回路ユニットの小型化が可能となり、回路ユニットを、ケース内の空きスペースを利用して収納することが可能となる。 According to the power distribution device of the present disclosure, the circuit unit that is connected to at least one component of the circuit structure and controls and monitors the component has a printed circuit board, and at least A support portion that covers one surface and supports the printed circuit board is integrally formed with the case. This eliminates the need for a casing that covers both sides of the printed circuit board, making it possible to downsize the circuit unit, and making it possible to store the circuit unit by utilizing the empty space within the case.
　また、回路ユニットを構成するプリント基板は、ケースにおける支持部の内部に配置されていることから、回路ユニットがケースに組み付けられることで、回路ユニット用の専用の筐体を別途設けなくとも、回路ユニットの取扱性や安全性を確保することができ、回路ユニットを少ない部品点数で安定して搭載できる電源用配電装置を提供することができる。 In addition, since the printed circuit board that makes up the circuit unit is placed inside the support part of the case, the circuit unit can be assembled into the case without the need for a separate dedicated casing for the circuit unit. It is possible to provide a power distribution device that can ensure the ease of handling and safety of the unit, and can stably mount a circuit unit with a small number of parts.
　なお、回路ユニットは、回路構成体の少なくとも１つの構成部品に接続されて、構成部品の制御および監視の少なくとも一方を行うものであれば、任意に構成することができる。例えば、パイロヒューズ等のアクティブヒューズを用いた高速な回路遮断を実現するための構成部品の制御を実行可能な回路を実装したプリント基板を含んで構成してもよいし、回路構成体の何れかの構成部品における電圧や温度、絶縁状態、ケース内の温度等、電源用配電装置の状態の監視を実行可能な回路を実装したプリント基板を含んで構成してもよい。 Note that the circuit unit can be arbitrarily configured as long as it is connected to at least one component of the circuit structure and controls and/or monitors the component. For example, the configuration may include a printed circuit board mounted with a circuit capable of controlling components to realize high-speed circuit interruption using active fuses such as pyrofuses, or any of the circuit components may be included. The configuration may include a printed circuit board mounted with a circuit capable of monitoring the status of the power supply distribution device, such as the voltage and temperature of the component parts, the insulation state, and the temperature inside the case.
（２）前記回路ユニットは、前記プリント基板と、前記プリント基板の他方の面を覆って前記プリント基板を保持する保持部材と、を有し、前記保持部材が前記ケースに保持されて、前記プリント基板の前記一方の面が前記ケースにおける前記支持部により覆われている、ことが好ましい。本態様では、回路ユニットが、プリント基板と、プリント基板の他方の面を覆って保持する保持部材という、簡単且つ小部品で構成されている。これにより、プリント基板の両面を覆うような筐体を設けて当該筐体をケースに組み付ける場合に比べて、回路ユニット、ひいては電源用配電装置の小型化が図られる。しかも、回路ユニットを、例えば既存のケースに保持させることも可能である。これにより、別途回路ユニット用に新たなケースを新設する必要がなくなり、コストの低減も図ることができる。 (2) The circuit unit includes the printed circuit board and a holding member that covers the other side of the printed circuit board and holds the printed circuit board, and the holding member is held by the case and the printed circuit board is Preferably, the one surface of the substrate is covered by the support section in the case. In this aspect, the circuit unit is composed of simple and small parts, including a printed circuit board and a holding member that covers and holds the other surface of the printed circuit board. As a result, the circuit unit and, by extension, the power distribution device can be made more compact than in the case where a housing that covers both sides of the printed circuit board is provided and the housing is assembled to the case. Furthermore, it is also possible to hold the circuit unit in, for example, an existing case. This eliminates the need to separately install a new case for the circuit unit, and it is also possible to reduce costs.
（３）前記プリント基板の両方の面が前記ケースにおける前記支持部により覆われている、ことが好ましい。本態様では、回路ユニットがプリント基板により構成されることから、回路ユニットをより小型に構成することができる。この結果、電源用配電装置のさらなる小型化が図られる。また、プリント基板をケースに組み付けた後には、プリント基板の両方の面がケースにおける支持部により覆われることから、ケース自体をプリント基板の筐体として扱うことが可能となり、プリント基板をケースに組み付けた状態で販売や輸送等を行うことができる。 (3) It is preferable that both surfaces of the printed circuit board are covered by the support section in the case. In this aspect, since the circuit unit is configured by a printed circuit board, the circuit unit can be configured to be more compact. As a result, the power distribution device can be further downsized. In addition, after the printed circuit board is assembled into the case, both sides of the printed circuit board are covered by the supporting parts of the case, so the case itself can be treated as a housing for the printed circuit board, and the printed circuit board can be assembled into the case. It is possible to sell, transport, etc. in the same state.
（４）前記回路構成体は、メインリレーと、前記メインリレーに直列に接続されたアクティブヒューズと、前記アクティブヒューズに流れる電流を検出する電流センサと、を含み、前記回路ユニットは、前記アクティブヒューズと前記電流センサに接続され、前記電流センサの検出値が閾値を超えた場合に、前記アクティブヒューズを遮断状態にする、ことが好ましい。電源用配電装置の回路構成体が、アクティブヒューズを備えていることから、リレーを大型化することなく、異常電流検出時の速やかな回路遮断が実現できる。しかも、アクティブヒューズの駆動制御を行う回路ユニットを、既存のケースに簡単に保持させることも可能であり、既存のケースを利用して、リレーおよびアクティブヒューズ駆動用の回路ユニットを、保護することもできる。それゆえ、回路ユニット専用のケースを必要とすることがなく、電源用配電装置全体の大型化も抑制することができる。 (4) The circuit component includes a main relay, an active fuse connected in series to the main relay, and a current sensor that detects a current flowing through the active fuse, and the circuit unit includes a main relay, an active fuse connected in series to the main relay, and a current sensor that detects a current flowing through the active fuse. It is preferable that the active fuse is connected to the current sensor and the active fuse is cut off when the detected value of the current sensor exceeds a threshold value. Since the circuit component of the power distribution device includes an active fuse, it is possible to quickly interrupt the circuit when an abnormal current is detected without increasing the size of the relay. Furthermore, the circuit unit that controls the drive of the active fuse can be easily held in an existing case, and the existing case can also be used to protect the circuit unit for driving the relay and active fuse. can. Therefore, there is no need for a dedicated case for the circuit unit, and the overall size of the power supply distribution device can also be suppressed.
（５）前記回路ユニットは、前記ケースに設けられた弾性係合部と係合可能であり、前記ケースの前記弾性係合部が前記回路ユニットに係合することにより、前記回路ユニットが前記ケースに保持されている、ことが好ましい。ケースの弾性係合部と回路ユニットの係合により回路ユニットがケースに保持されることで、組付作業性の向上を図ることができるからである。 (5) The circuit unit is engageable with an elastic engagement part provided on the case, and when the elastic engagement part of the case engages with the circuit unit, the circuit unit is connected to the case. Preferably, it is maintained at . This is because the circuit unit is held in the case by the engagement between the elastic engagement portion of the case and the circuit unit, thereby improving the assembling workability.
（６）前記回路ユニットの前記プリント基板は、前記構成部品に接続された電線端末に設けられたコネクタが装着可能な基板コネクタを備えている、ことが好ましい。回路構成体の構成部品と回路ユニットの接続をコネクタ接続により簡便に行うことができ、組立作業性の更なる向上を図ることができるからである。 (6) Preferably, the printed circuit board of the circuit unit includes a board connector to which a connector provided at an end of a wire connected to the component can be attached. This is because the components of the circuit structure and the circuit unit can be easily connected by connector connection, and the assembly workability can be further improved.
（７）前記回路ユニットの前記プリント基板は、前記構成部品に接続された電線端末に設けられたコネクタに接続される基板端子を有し、前記ケースは、前記基板端子を収容して前記コネクタが装着可能なコネクタハウジングを有している、ことが好ましい。回路構成体の構成部品と回路ユニットの接続を、コネクタ接続により簡便に行うことができ、組立作業性の更なる向上を図ることができるからである。しかも、コネクタハウジングがケースに設けられていることから、回路ユニットの構成を簡素化できる。ケースを利用してコネクタハウジングを構成できる場合には、回路ユニットや電源用配電装置全体の小型化や低背化も可能になる。 (7) The printed circuit board of the circuit unit has a board terminal connected to a connector provided on a wire terminal connected to the component, and the case accommodates the board terminal and the connector Preferably, it has an attachable connector housing. This is because the components of the circuit structure and the circuit unit can be easily connected by connector connection, and the assembly workability can be further improved. Moreover, since the connector housing is provided in the case, the configuration of the circuit unit can be simplified. If the connector housing can be configured using a case, it is possible to downsize and lower the height of the entire circuit unit and power distribution device.
（８）前記回路ユニットは、接続される前記構成部品の近傍において、前記ケースに保持されている、ことが好ましい。回路ユニットが、接続される構成部品の近傍でケースに保持されていることから、例えば、制御や監視等をＥＣＵで行う場合に比して、制御や監視対象である構成部品の環境と回路ユニットの環境に相違が生じることを有利に抑制でき、制御や監視における判断精度を向上させることができる。しかも、回路ユニットと構成部品を繋ぐ電線長を短くできるため、ノイズの影響を有利に低減できて、判断精度の向上を図ることができる。 (8) Preferably, the circuit unit is held in the case near the component parts to be connected. Because the circuit unit is held in the case near the component parts to which it is connected, the circuit unit and the environment of the component to be controlled and monitored are more easily controlled and monitored than when control and monitoring are performed using an ECU. It is possible to advantageously suppress the occurrence of differences in the environment, and improve the accuracy of judgment in control and monitoring. Moreover, since the length of the electric wire connecting the circuit unit and the component parts can be shortened, the influence of noise can be advantageously reduced, and the accuracy of judgment can be improved.
（９）前記ケースが、前記回路構成体の前記構成部品を収容して保持するロアケースと、前記ロアケースの開口を覆うアッパケースと、を含み、前記アッパケースに前記回路ユニットが保持されており、前記構成部品から延びる電線が前記回路ユニットの前記プリント基板に接続されている、ことが好ましい。回路ユニット接続される構成部品がロアケースに保持され、ロアケースの開口を覆うアッパケースに回路ユニットが保持されている。それゆえ、構成部品から延びる電線を回路ユニットのプリント基板に接続する作業を、ロアケース上のスペースを利用してロアケース側の構成部品に邪魔されることなく容易に行うことができ、作業性に優れる電源用配電装置を提供することができる。 (9) the case includes a lower case that accommodates and holds the components of the circuit component; and an upper case that covers an opening of the lower case, and the circuit unit is held in the upper case; Preferably, electric wires extending from the component are connected to the printed circuit board of the circuit unit. Components connected to the circuit unit are held in a lower case, and the circuit unit is held in an upper case that covers an opening of the lower case. Therefore, the work of connecting the electric wires extending from the component parts to the printed circuit board of the circuit unit can be easily performed by using the space on the lower case without being obstructed by the components on the lower case side, and the work is excellent in work efficiency. A power distribution device for a power source can be provided.
（１０）前記保持部材が、前記プリント基板の前記一方の面の全面を覆う大きさで広がる底板と、前記底板の周縁部から突出する周壁とを有し、前記底板に前記プリント基板が固定されている、ことが好ましい。保持部材の底板により、プリント基板の一方の面の全面を覆うことができ、プリント基板の他部材との干渉を抑制して、一層安定してプリント基板を保持することができる。しかも、周壁によりプリント基板の側方からの他部材との干渉も抑制しつつ、保持部材の剛性も確保できることから、回路ユニットの耐久性の向上も図ることができる。 (10) The holding member has a bottom plate that extends to a size that covers the entire surface of the one surface of the printed circuit board, and a peripheral wall protruding from a peripheral edge of the bottom plate, and the printed circuit board is fixed to the bottom plate. It is preferable that the The bottom plate of the holding member can cover the entire surface of one side of the printed circuit board, suppressing interference with other members of the printed circuit board, and making it possible to hold the printed circuit board more stably. Furthermore, since the peripheral wall prevents the printed circuit board from interfering with other members from the sides and ensures the rigidity of the holding member, it is also possible to improve the durability of the circuit unit.
＜本開示の実施形態の詳細＞
　本開示の電源用配電装置の具体例を、以下に図面を参照しつつ説明する。なお、本開示は、これらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 <Details of embodiments of the present disclosure>
A specific example of the power distribution device of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.
＜実施形態１＞
　以下、本開示の実施形態１の電源用配電装置１０について、図１から図９を用いて説明する。電源用配電装置１０は、車両の走行駆動用の電源である電池パック１２（図２参照）に接続されて、電源（電池パック１２）からの電力を車両負荷としてのＰＣＵ１３（図２参照）に配電するものである。なお、電源用配電装置１０は、任意の向きで配置することができるが、以下の説明では、図１に示す上下、左右、前後の各方向に従って説明する。また、複数の同一部材については、一部の部材にのみ符号を付し、他の部材については符号を省略する場合がある。 <Embodiment 1>
Hereinafter, a power distribution device 10 according to a first embodiment of the present disclosure will be described using FIGS. 1 to 9. The power distribution device 10 is connected to a battery pack 12 (see FIG. 2) that is a power source for driving the vehicle, and transmits power from the power source (battery pack 12) to a PCU 13 (see FIG. 2) as a vehicle load. It distributes electricity. Although the power distribution device 10 can be arranged in any direction, the following description will be made in accordance with the up-down, right-left, and front-back directions shown in FIG. Furthermore, regarding a plurality of identical members, only some of the members may be labeled with numerals, and the numerals may be omitted for other members.
＜電源用配電装置１０＞
　電源用配電装置１０は、電池パック１２からの電力を車両負荷としてのＰＣＵ１３に分配する回路構成体１４と、回路構成体１４を収容するケース１６と、を備えている。実施形態１では、回路構成体１４が複数の構成部品１８から構成されている。また、電源用配電装置１０は、回路構成体１４を構成する複数の構成部品１８の少なくとも１つに接続されて、この構成部品１８の制御および監視の少なくとも一方を行う回路ユニット２０を備えている。実施形態１では、回路ユニット２０が、当該回路ユニット２０に接続された構成部品１８の制御を行うようになっている。 <Power distribution device 10>
The power distribution device 10 includes a circuit component 14 that distributes power from a battery pack 12 to a PCU 13 serving as a vehicle load, and a case 16 that accommodates the circuit component 14. In the first embodiment, the circuit component 14 is composed of a plurality of component parts 18. The power distribution device 10 also includes a circuit unit 20 that is connected to at least one of the plurality of components 18 that constitute the circuit component 14 and controls and/or monitors the component 18. . In the first embodiment, the circuit unit 20 controls the components 18 connected to the circuit unit 20.
＜電池パック１２＞
　電源としての電池パック１２は、従来公知のものが採用され得ることから、説明は省略するが、図２の回路図に示されるように、電池パック１２における正極側の出力端子２２ａが、回路構成体１４を構成する構成部品１８の１つである正極側のメインリレー２４ａに電気的に接続されているとともに、電池パック１２における負極側の出力端子２２ｂが、構成部品１８の１つである負極側のメインリレー２４ｂに電気的に接続されている。また、正極側のメインリレー２４ａは、複数の構成部品１８を介して、電池パック１２外に位置するＰＣＵ１３の正極側の入力端子２５ａに対して電気的に接続されているとともに、負極側のメインリレー２４ｂは、電池パック１２外に位置するＰＣＵ１３の負極側の入力端子２５ｂに対して電気的に接続されている。 <Battery pack 12>
As the battery pack 12 as a power source, a conventionally known one can be adopted, so the explanation will be omitted. As shown in the circuit diagram of FIG. 2, the positive electrode side output terminal 22a of the battery pack 12 has a circuit configuration It is electrically connected to the main relay 24a on the positive side, which is one of the components 18 making up the battery pack 14, and the output terminal 22b on the negative side of the battery pack 12 is connected to the negative electrode, which is one of the components 18. It is electrically connected to the side main relay 24b. Further, the main relay 24a on the positive side is electrically connected to the positive side input terminal 25a of the PCU 13 located outside the battery pack 12 via the plurality of components 18, and the main relay 24a on the negative side The relay 24b is electrically connected to a negative input terminal 25b of the PCU 13 located outside the battery pack 12.
　また、電源用配電装置１０は、図示しない電池パック１２の筐体内に収容されているとともに、電池パック１２の筐体内にはＥＣＵ２６が収容されている。ＥＣＵ２６は、電源用配電装置１０における回路構成体１４を構成する複数の構成部品１８に対して電気的に接続されており、電力を供給している。 Further, the power distribution device 10 is housed within a housing of a battery pack 12 (not shown), and an ECU 26 is housed within the housing of the battery pack 12. The ECU 26 is electrically connected to a plurality of components 18 that constitute the circuit component 14 in the power distribution device 10, and supplies power thereto.
＜回路構成体１４＞
　図２等にも示されるように、回路構成体１４は、構成部品１８として、メインリレー２４と、メインリレー２４に直列に接続されたアクティブヒューズとしてのパイロヒューズ２８と、パイロヒューズ２８に流れる電流を検出する電流センサ３０と、を含んでいる。実施形態１では、図３，４にも示されるように、４つのメインリレー２４が設けられており、これら４つのメインリレー２４が、上述の正極側のメインリレー２４ａと負極側のメインリレー２４ｂを含んでいる。正極側のメインリレー２４ａおよび負極側のメインリレー２４ｂを含む４つのメインリレー２４は、例えばケース１６を構成する後述するロアケース３６に固定されて、最も左側のメインリレー２４が正極側のメインリレー２４ａとされるとともに、最も右側のメインリレー２４が負極側のメインリレー２４ｂとされる。 <Circuit construct 14>
As shown in FIG. 2 etc., the circuit component 14 includes, as components 18, a main relay 24, a pyrofuse 28 as an active fuse connected in series to the main relay 24, and a current flowing through the pyrofuse 28. It includes a current sensor 30 that detects. In the first embodiment, as shown in FIGS. 3 and 4, four main relays 24 are provided, and these four main relays 24 are the above-mentioned positive side main relay 24a and negative side main relay 24b. Contains. The four main relays 24, including the positive side main relay 24a and the negative side main relay 24b, are fixed to, for example, a lower case 36 that constitutes the case 16 and will be described later, and the leftmost main relay 24 is the positive side main relay 24a. At the same time, the rightmost main relay 24 is the negative electrode side main relay 24b.
　アクティブヒューズとは、外部からの制御信号に基づいて切断が可能な素子のことであり、実施形態１では、アクティブヒューズとしてパイロヒューズ２８が採用されている。さらに、実施形態１では、２つの電流センサ３０（第１電流センサ３０ａおよび第２電流センサ３０ｂ）が設けられており、正極側のメインリレー２４ａに対して、パイロヒューズ２８、第１電流センサ３０ａ、第２電流センサ３０ｂの順に直列に接続されている。これにより、パイロヒューズ２８に流れる電流が第１電流センサ３０ａおよび第２電流センサ３０ｂにより検出されるようになっている。そして、後述するように、回路ユニット２０が、パイロヒューズ２８および第１電流センサ３０ａに接続されており、第１電流センサ３０ａおよび／または第２電流センサ３０ｂにより検出されるパイロヒューズ２８の電流値（検出値）が所定の閾値を超えた場合に、回路ユニット２０からパイロヒューズ２８に制御信号が送信されて、パイロヒューズ２８が遮断状態とされるようになっている。 An active fuse is an element that can be cut based on an external control signal, and in the first embodiment, a pyrofuse 28 is used as the active fuse. Furthermore, in the first embodiment, two current sensors 30 (a first current sensor 30a and a second current sensor 30b) are provided. , and the second current sensor 30b are connected in series in this order. Thereby, the current flowing through the pyrofuse 28 is detected by the first current sensor 30a and the second current sensor 30b. As described later, the circuit unit 20 is connected to the pyrofuse 28 and the first current sensor 30a, and the current value of the pyrofuse 28 is detected by the first current sensor 30a and/or the second current sensor 30b. When the detected value exceeds a predetermined threshold, a control signal is transmitted from the circuit unit 20 to the pyrofuse 28, and the pyrofuse 28 is cut off.
　また、回路構成体１４は、構成部品１８として、正極側のメインリレー２４ａに電気的に接続されるプリチャージリレー３２とプリチャージ抵抗３４とを備えている。実施形態１では、これらプリチャージリレー３２とプリチャージ抵抗３４とがケース１６を構成する後述するアッパケース３８に固定されており、正極側のメインリレー２４ａとプリチャージリレー３２とプリチャージ抵抗３４とが適切なバスバーや配線等を介して接続されている。 Further, the circuit component 14 includes, as the component parts 18, a precharge relay 32 and a precharge resistor 34, which are electrically connected to the main relay 24a on the positive side. In the first embodiment, the precharge relay 32 and the precharge resistor 34 are fixed to an upper case 38 (described later) that constitutes the case 16, and the main relay 24a, the precharge relay 32, and the precharge resistor 34 on the positive side are connected via appropriate busbars, wiring, etc.
＜ケース１６＞
　図３等にも示されるように、実施形態１では、ケース１６が、上下方向で相互に分割可能なロアケース３６およびアッパケース３８から構成されており、ロアケース３６の開口がアッパケース３８により覆われるようになっている。ケース１６（ロアケース３６およびアッパケース３８）は、例えば絶縁性を有する合成樹脂により形成される。なお、ロアケース３６の外周面（後述する下周壁部４２の外周面）とアッパケース３８の外周面（後述する上周壁部４８の外周面）とにはそれぞれロック爪部３９ａとロック枠体３９ｂが設けられており、ロアケース３６とアッパケース３８とは、これらロック爪部３９ａとロック枠体３９ｂとが相互に係合することで、解除可能に固定される。 <Case 16>
As shown in FIG. 3 and the like, in the first embodiment, the case 16 is composed of a lower case 36 and an upper case 38 that can be separated from each other in the vertical direction, and the opening of the lower case 36 is covered by the upper case 38. It looks like this. The case 16 (lower case 36 and upper case 38) is made of, for example, a synthetic resin having insulation properties. Note that a lock claw portion 39a and a lock frame body 39b are provided on the outer circumferential surface of the lower case 36 (the outer circumferential surface of the lower circumferential wall portion 42 described later) and the outer circumferential surface of the upper case 38 (the outer circumferential surface of the upper circumferential wall portion 48 described later), respectively. The lower case 36 and the upper case 38 are releasably fixed by the lock claw portions 39a and the lock frame body 39b being engaged with each other.
　ロアケース３６は、全体として上方に開口する略箱状であり、略矩形平板状の底壁部４０と、底壁部４０の外周縁部から上方に突出する下周壁部４２とを備えている。そして、図３，４にも示されるように、ロアケース３６において、回路構成体１４を構成する前述の４つの各メインリレー２４、パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ等の複数の構成部品１８が、適切なバスバー等を介して電気的に接続された状態で収容されて保持されることで、ロアケース側組立体４４が構成されている。実施形態１では、回路構成体１４における複数の構成部品１８のうち、パイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂとが、ロアケース側組立体４４における左端部分に位置している。 The lower case 36 has a generally box-like shape that opens upward, and includes a bottom wall portion 40 having a substantially rectangular flat plate shape and a lower peripheral wall portion 42 projecting upward from the outer peripheral edge of the bottom wall portion 40. As shown in FIGS. 3 and 4, in the lower case 36, a plurality of the four main relays 24, the pyrofuse 28, the first and second current sensors 30a, 30b, etc. that constitute the circuit component 14 are installed. The lower case side assembly 44 is constructed by housing and holding the component parts 18 in an electrically connected state via an appropriate bus bar or the like. In the first embodiment, among the plurality of components 18 in the circuit component 14, the pyrofuse 28 and the first and second current sensors 30a, 30b are located at the left end portion of the lower case assembly 44.
　また、アッパケース３８は、全体として下方に開口する略箱状であり、略矩形平板状の上底壁部４６と、上底壁部４６の外周縁部から下方に突出する上周壁部４８とを備えている。なお、上周壁部４８はアッパケース３８の左方には設けられておらず、アッパケース３８の前方、後方および右方に設けられている。すなわち、アッパケース３８は左方開口部４９を備えており、左方開口部４９を通じてアッパケース３８の内部空間と外部空間とが相互に連通されている。そして、図５から図７にも示されるように、アッパケース３８において、上底壁部４６上に回路構成体１４を構成するプリチャージリレー３２やプリチャージ抵抗３４等の構成部品１８が、適切なバスバー等を介して電気的に接続された状態で載置されて固定されるとともに、回路ユニット２０が保持されることで、アッパケース側組立体５０が構成されている。 The upper case 38 as a whole has a generally box-like shape that opens downward, and includes an approximately rectangular flat upper bottom wall portion 46 and an upper peripheral wall portion 48 that protrudes downward from the outer peripheral edge of the upper bottom wall portion 46. We are prepared. Note that the upper peripheral wall portion 48 is not provided on the left side of the upper case 38, but is provided on the front, rear, and right side of the upper case 38. That is, the upper case 38 includes a left opening 49 through which the internal space and external space of the upper case 38 communicate with each other. As shown in FIGS. 5 to 7, in the upper case 38, the components 18 such as the precharge relay 32 and the precharge resistor 34 constituting the circuit structure 14 are properly installed on the upper bottom wall 46. The upper case side assembly 50 is configured by placing and fixing the circuit unit 20 in an electrically connected state via a bus bar or the like, and holding the circuit unit 20.
　なお、アッパケース３８の上底壁部４６において、左端部分には段差５１が設けられており、左端部分が他の部分よりも上方に位置している。これにより、アッパケース３８の左端部分において、上下方向寸法が他の部分よりも大きくされている。そして、この上下方向寸法が大きくされたアッパケース３８の左端部分に対して回路ユニット２０が保持されている。このアッパケース３８の左端部分により、回路ユニット２０を構成するプリント基板５８の一方の面（上面６１）を覆ってプリント基板５８を支持する支持部５３が構成されている。すなわち、支持部５３はアッパケース３８と一体的に形成されており、この支持部５３の内部にプリント基板５８が配置されて、プリント基板５８の外部への露出が防止されている。 Note that in the upper bottom wall portion 46 of the upper case 38, a step 51 is provided at the left end portion, and the left end portion is located higher than the other portions. As a result, the left end portion of the upper case 38 has a larger vertical dimension than the other portions. The circuit unit 20 is held at the left end portion of the upper case 38 whose vertical dimension is increased. The left end portion of the upper case 38 constitutes a support portion 53 that covers one surface (upper surface 61) of the printed circuit board 58 constituting the circuit unit 20 and supports the printed circuit board 58. That is, the support portion 53 is formed integrally with the upper case 38, and the printed circuit board 58 is disposed inside the support portion 53, thereby preventing the printed circuit board 58 from being exposed to the outside.
　具体的には、図８に示されるように、支持部５３を構成する上底壁部４６における左端部分の下面において、上周壁部４８の内側には、下方に突出する略矩形枠状の保持枠部５２が設けられている。保持枠部５２は所定の上下方向寸法を有しており、保持枠部５２の外周面には、外周側に突出する複数の弾性係合部としてのロック突部５４が設けられている。そして、これらロック突部５４と回路ユニット２０に設けられた後述する弾性ロック片７４とが相互に係合することにより、アッパケース３８に対して回路ユニット２０が保持されている。なお、保持枠部５２は、１周に満たない周方向寸法で形成されており、左方において所定の周方向寸法（左右方向寸法）を有する切欠状の開口部５６が設けられている。これにより、開口部５６を通じて、保持枠部５２の内部空間と外部空間とが相互に連通されている。保持枠部５２において開口部５６が設けられることにより、保持枠部５２の下端部は僅かに内周側に弾性変形可能とされている。 Specifically, as shown in FIG. 8, on the lower surface of the left end portion of the upper bottom wall portion 46 constituting the support portion 53, a substantially rectangular frame-shaped holding frame is provided inside the upper circumferential wall portion 48 and protrudes downward. A section 52 is provided. The holding frame portion 52 has a predetermined vertical dimension, and the outer peripheral surface of the holding frame portion 52 is provided with a plurality of lock protrusions 54 as elastic engagement portions that protrude toward the outer peripheral side. The circuit unit 20 is held relative to the upper case 38 by mutually engaging these lock protrusions 54 with elastic lock pieces 74 provided on the circuit unit 20 and described later. Note that the holding frame portion 52 is formed with a circumferential dimension that is less than one circumference, and is provided with a notch-shaped opening 56 having a predetermined circumferential dimension (horizontal dimension) on the left side. Thereby, the internal space and external space of the holding frame section 52 are communicated with each other through the opening 56. By providing the opening 56 in the holding frame 52, the lower end of the holding frame 52 can be elastically deformed slightly toward the inner circumference.
　また、アッパケース３８（アッパケース側組立体５０）の左右方向寸法はロアケース３６（ロアケース側組立体４４）の左右方向寸法よりも小さくされており、アッパケース側組立体５０とロアケース側組立体４４とが相互に組み付けられた際に、ロアケース側組立体４４の左端部分がアッパケース３８（アッパケース側組立体５０）により覆われないようになっている。これにより、アッパケース側組立体５０とロアケース側組立体４４とが相互に組み付けられた際には、ロアケース側組立体４４において左端部分に位置するパイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂとが、アッパケース３８により覆われず、外部に、すなわち上方に向かって露出している。 Further, the left-right dimension of the upper case 38 (upper case-side assembly 50) is smaller than the left-right dimension of the lower case 36 (lower case-side assembly 44), and the upper case-side assembly 50 and lower case-side assembly 44 When these are assembled to each other, the left end portion of the lower case assembly 44 is not covered by the upper case 38 (upper case assembly 50). As a result, when the upper case side assembly 50 and the lower case side assembly 44 are assembled to each other, the pyrofuse 28 located at the left end portion of the lower case side assembly 44, the first and second current sensors 30a, 30b is not covered by the upper case 38 and is exposed to the outside, that is, upwardly.
＜回路ユニット２０＞
　図５にも示されるように、回路ユニット２０は、回路ユニット２０に接続される少なくとも１つの構成部品１８の制御および監視の少なくとも一方を実行可能な図示しない回路が実装されたプリント基板５８と、プリント基板５８の他方の面を覆ってプリント基板５８を保持する保持部材６０とを有している。実施形態１では、プリント基板５８が略矩形状であり、プリント基板５８において構成部品１８の制御を実行可能である回路が実装されている。なお、プリント基板５８に実装される回路は、例えばプリント基板５８の一方の面である上面６１に設けられており、プリント基板５８における上面６１には、左端部において、実装されている回路と電気的に接続する基板コネクタ６２が設けられている。実施形態１では、プリント基板５８上の左端部において、３つの基板コネクタ６２が前後方向で相互に離隔して設けられている。さらに、実施形態１では、保持部材６０が、プリント基板５８の他方の面である下面６３を覆っている。 <Circuit unit 20>
As also shown in FIG. 5, the circuit unit 20 includes a printed circuit board 58 on which a circuit (not shown) capable of controlling and/or monitoring at least one component 18 connected to the circuit unit 20 is mounted; It has a holding member 60 that covers the other surface of the printed circuit board 58 and holds the printed circuit board 58. In the first embodiment, the printed circuit board 58 has a substantially rectangular shape, and a circuit that can control the component parts 18 is mounted on the printed circuit board 58. Note that the circuit mounted on the printed circuit board 58 is provided, for example, on an upper surface 61 that is one surface of the printed circuit board 58, and the upper surface 61 of the printed circuit board 58 has a circuit mounted thereon and an electrical connection at the left end. A board connector 62 for connection is provided. In the first embodiment, three board connectors 62 are provided at the left end portion of the printed circuit board 58 so as to be spaced apart from each other in the front-rear direction. Furthermore, in the first embodiment, the holding member 60 covers the lower surface 63, which is the other surface of the printed circuit board 58.
　図９にも示されるように、保持部材６０は、全体として上方に開口する略箱状であり、例えば絶縁性を有する合成樹脂により形成される。保持部材６０を構成する合成樹脂は、ケース１６（ロアケース３６およびアッパケース３８）を構成する合成樹脂と同じであってもよいし、異なっていてもよい。保持部材６０は、略矩形平板状の底板６４と、底板６４の外周縁部から上方に突出する周壁６６とを有している。実施形態１では、底板６４が、プリント基板５８の下面６３の全面を覆う大きさで広がっているとともに、底板６４における複数箇所には、プリント基板５８をねじ留めするためのねじ穴６８が設けられている。また、周壁６６の左方部分における上端部において、プリント基板５８上の基板コネクタ６２と対応する３箇所には、それぞれ略矩形の切欠部７０が設けられている。周壁６６の上端部において、これら切欠部７０が設けられることにより、周壁６６の上端部は、僅かに外周側に弾性変形可能とされている。 As shown in FIG. 9, the holding member 60 has a generally box-like shape that opens upward, and is made of, for example, a synthetic resin having insulating properties. The synthetic resin forming the holding member 60 may be the same as or different from the synthetic resin forming the case 16 (lower case 36 and upper case 38). The holding member 60 has a substantially rectangular flat bottom plate 64 and a peripheral wall 66 that projects upward from the outer peripheral edge of the bottom plate 64 . In the first embodiment, the bottom plate 64 is wide enough to cover the entire lower surface 63 of the printed circuit board 58, and screw holes 68 for screwing the printed circuit board 58 are provided at multiple locations on the bottom plate 64. ing. Further, at the upper end of the left portion of the peripheral wall 66, substantially rectangular cutouts 70 are provided at three locations corresponding to the board connectors 62 on the printed circuit board 58, respectively. By providing these notches 70 at the upper end of the peripheral wall 66, the upper end of the peripheral wall 66 can be elastically deformed slightly toward the outer periphery.
　そして、周壁６６における内周面において周上の複数箇所には、上下方向に延びて内周側に開口する凹部７２が設けられており、これら凹部７２の形成位置において周壁６６の厚さ寸法が小さくされている。これら凹部７２は、周壁６６の上端部までは達しておらず、凹部７２の形成位置において周壁６６の上端部には、周壁６６における上端部以外の部分よりも内周側に突出する弾性ロック片７４が構成されている。これら各凹部７２および各弾性ロック片７４は、アッパケース３８の保持枠部５２における各ロック突部５４と対応する位置に形成されている。 Recesses 72 extending in the vertical direction and opening toward the inner peripheral side are provided at multiple locations on the inner peripheral surface of the peripheral wall 66, and the thickness of the peripheral wall 66 is adjusted at the positions where these recesses 72 are formed. It has been made smaller. These recesses 72 do not reach the upper end of the peripheral wall 66, and at the formation position of the recess 72, an elastic locking piece is provided at the upper end of the peripheral wall 66 that protrudes further inward than the portion of the peripheral wall 66 other than the upper end. 74 are configured. These recesses 72 and elastic locking pieces 74 are formed at positions corresponding to the locking protrusions 54 on the holding frame 52 of the upper case 38 .
＜電源用配電装置１０の組み立て工程＞
　続いて、電源用配電装置１０の組み立て工程の具体的な一例について説明する。なお、電源用配電装置１０の組み立て工程は、以下の記載に限定されない。 <Assembling process of power distribution device 10>
Next, a specific example of the assembly process of the power distribution device 10 will be described. Note that the assembly process of the power distribution device 10 is not limited to the following description.
　先ず、ロアケース３６に対して、回路構成体１４を構成する正極側および負極側のメインリレー２４ａ，２４ｂを含む各メインリレー２４、パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ、それらを電気的に接続するバスバーや配線等を収容して固定する。これにより、ロアケース側組立体４４が完成する。 First, the main relays 24 including the positive and negative main relays 24a and 24b, the pyrofuse 28, and the first and second current sensors 30a and 30b that make up the circuit component 14 are installed on the lower case 36. Accommodates and fixes electrically connected bus bars, wiring, etc. Thereby, the lower case side assembly 44 is completed.
　次に、アッパケース３８に対して、回路構成体１４を構成するプリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等を固定する。また、保持部材６０の底板６４に対して上方から各基板コネクタ６２が上面６１に実装されたプリント基板５８を重ね合わせてねじ留めにより固定する。これにより、回路ユニット２０が完成する。そして、アッパケース３８の左端部分（支持部５３）に対して下方から回路ユニット２０を接近させて、アッパケース３８の保持枠部５２において外周側に突出する各ロック突部５４と保持部材６０における周壁６６の上端部とを当接させる。その後、アッパケース３８と回路ユニット２０とをさらに相互に接近させることで、各ロック突部５４を有する保持枠部５２および／または各弾性ロック片７４を有する周壁６６が弾性変形する。そして、各ロック突部５４が各弾性ロック片７４を乗り越えることにより、保持枠部５２および周壁６６が弾性的に復元変形して、各ロック突部５４と各弾性ロック片７４とが係合する。この結果、アッパケース３８により回路ユニット２０の保持部材６０が保持されて、アッパケース３８に対して回路ユニット２０が組み付けられる。これにより、アッパケース側組立体５０が完成する。 Next, the precharge relay 32 and precharge resistor 34 that constitute the circuit component 14, and the bus bars and wiring that electrically connect them are fixed to the upper case 38. Further, the printed circuit board 58, on which each board connector 62 is mounted on the upper surface 61, is stacked on the bottom plate 64 of the holding member 60 from above and fixed by screwing. Thereby, the circuit unit 20 is completed. Then, the circuit unit 20 is brought close to the left end portion (supporting portion 53) of the upper case 38 from below, and the lock protrusions 54 and the holding member 60 that protrude toward the outer circumference of the holding frame portion 52 of the upper case 38 are connected to each other. The upper end portion of the peripheral wall 66 is brought into contact with the upper end portion of the peripheral wall 66. Thereafter, by bringing the upper case 38 and the circuit unit 20 closer to each other, the holding frame 52 having each of the lock protrusions 54 and/or the peripheral wall 66 having each of the elastic locking pieces 74 are elastically deformed. Then, as each lock protrusion 54 rides over each elastic lock piece 74, the holding frame 52 and the peripheral wall 66 are elastically restored and deformed, and each lock protrusion 54 and each elastic lock piece 74 engage with each other. . As a result, the holding member 60 of the circuit unit 20 is held by the upper case 38, and the circuit unit 20 is assembled to the upper case 38. Thereby, the upper case side assembly 50 is completed.
　このようにして製造されたアッパケース側組立体５０では、回路ユニット２０におけるプリント基板５８の一方の面である上面６１が、ケース１６を構成するアッパケース３８の支持部５３において上底壁部４６により上方から覆われて、プリント基板５８が支持部５３の内部に配置され外部への露出が防止されている。また、プリント基板５８の左端部に設けられた各基板コネクタ６２が、保持枠部５２における開口部５６および周壁６６における各切欠部７０を通じて左方に露出している。 In the upper case side assembly 50 manufactured in this manner, the upper surface 61, which is one surface of the printed circuit board 58 in the circuit unit 20, is connected to the upper bottom wall portion 46 at the support portion 53 of the upper case 38 constituting the case 16. The printed circuit board 58 is placed inside the support part 53 and is prevented from being exposed to the outside. Further, each board connector 62 provided at the left end of the printed circuit board 58 is exposed to the left through the opening 56 in the holding frame 52 and each notch 70 in the peripheral wall 66.
　続いて、ロアケース側組立体４４に対して上方からアッパケース側組立体５０を重ね合わせて、ロック爪部３９ａとロック枠体３９ｂとを係合させることで、ロアケース側組立体４４とアッパケース側組立体５０とを相互に固定する。その際、ロアケース側組立体４４における正極側のメインリレー２４ａとアッパケース側組立体５０におけるプリチャージリレー３２やプリチャージ抵抗３４を電気的に接続するとともに、ロアケース側組立体４４におけるバスバーとアッパケース側組立体５０におけるバスバーとを電気的に接続する。これにより、ロアケース側組立体４４における構成部品１８とアッパケース側組立体５０における構成部品１８とを電気的に接続する。このようにロアケース側組立体４４とアッパケース側組立体５０とが相互に組み付けられた状態では、上述のように、パイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂとがアッパケース３８によって覆われず、上方に向かって露出している。 Next, by overlapping the upper case assembly 50 from above with respect to the lower case assembly 44 and engaging the lock claw portion 39a and the lock frame 39b, the lower case assembly 44 and the upper case assembly The assembly 50 is fixed to each other. At that time, the main relay 24a on the positive side in the lower case side assembly 44 and the precharge relay 32 and precharge resistor 34 in the upper case side assembly 50 are electrically connected, and the bus bar in the lower case side assembly 44 and the upper case The bus bar in the side assembly 50 is electrically connected. This electrically connects the component 18 in the lower case assembly 44 and the component 18 in the upper case assembly 50. In this state where the lower case assembly 44 and the upper case assembly 50 are assembled to each other, the pyro fuse 28 and the first and second current sensors 30a and 30b are connected to each other by the upper case 38, as described above. uncovered and exposed upwards.
　その後、アッパケース側組立体５０において左方に露出する基板コネクタ６２のうちの２つと、パイロヒューズ２８および第１電流センサ３０ａとをそれぞれ電気的に接続する。また、アッパケース側組立体５０において左方に露出する基板コネクタ６２の残りの１つと第２電流センサ３０ｂを、ＥＣＵ２６に電気的に接続する。これにより、回路ユニット２０におけるプリント基板５８と、回路構成体１４を構成する構成部品１８であるパイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂとが電気的に接続される。この結果、電源用配電装置１０が完成する。 Thereafter, two of the board connectors 62 exposed on the left side of the upper case side assembly 50 are electrically connected to the pyrofuse 28 and the first current sensor 30a, respectively. Further, the remaining one of the board connectors 62 exposed to the left in the upper case side assembly 50 and the second current sensor 30b are electrically connected to the ECU 26. Thereby, the printed circuit board 58 in the circuit unit 20, the pyrofuse 28, which is the component 18 constituting the circuit component 14, and the first and second current sensors 30a, 30b are electrically connected. As a result, the power distribution device 10 is completed.
　実施形態１では、各基板コネクタ６２と各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）の電気的な接続が、端末にコネクタ７６が設けられた電線７８によってなされる。すなわち、プリント基板５８上に実装された各基板コネクタ６２には、各構成部品１８から延びる電線７８の端末に設けられたコネクタ７６ａが装着されるとともに、パイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂには、電線７８の反対側の端末に設けられたコネクタ７６ｂが装着される。なお、図１に示されるように、第２電流センサ３０ｂとＥＣＵ２６とを接続する電線７８と、基板コネクタ６２の１つとＥＣＵ２６とを接続する電線７８は途中で合流して（あるいは、分岐して）おり、当該電線７８におけるＥＣＵ２６に接続される側の端末には、ＥＣＵ２６側の図示しないコネクタに装着されるコネクタ７６ｃが設けられている。尤も、ロアケース側組立体４４とアッパケース側組立体５０とを固定する前に、各基板コネクタ６２に対して各電線７８におけるコネクタ７６ａが装着されてもよく、各基板コネクタ６２と各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）とが各電線７８により接続された状態で、ロアケース側組立体４４とアッパケース側組立体５０とを固定してもよい。 In the first embodiment, electrical connection between each board connector 62 and each component 18 (pyrofuse 28, first and second current sensors 30a, 30b) is made by an electric wire 78 having a connector 76 at its terminal. . That is, each board connector 62 mounted on the printed circuit board 58 is attached with a connector 76a provided at the terminal of the electric wire 78 extending from each component 18, and also has a pyrofuse 28 and the first and second current sensors. A connector 76b provided at the opposite end of the electric wire 78 is attached to 30a and 30b. Note that, as shown in FIG. 1, the electric wire 78 connecting the second current sensor 30b and the ECU 26 and the electric wire 78 connecting one of the board connectors 62 and the ECU 26 merge (or branch) in the middle. ), and the terminal of the electric wire 78 connected to the ECU 26 is provided with a connector 76c that is attached to a connector (not shown) on the ECU 26 side. Of course, before fixing the lower case side assembly 44 and the upper case side assembly 50, the connector 76a of each electric wire 78 may be attached to each board connector 62, and each board connector 62 and each component 18 may be connected to each other. (The pyrofuse 28 and the first and second current sensors 30a, 30b) may be connected to each other by the electric wires 78, and the lower case assembly 44 and the upper case assembly 50 may be fixed.
　このようにして製造された電源用配電装置１０では、アッパケース側組立体５０の左端部が、ロアケース側組立体４４におけるパイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂに対して、左右方向において比較的近くに位置している。すなわち、回路ユニット２０は、当該回路ユニット２０に接続される構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）における左右方向の近傍において、アッパケース３８に保持されている。 In the power distribution device 10 manufactured in this manner, the left end portion of the upper case assembly 50 is located on the left and right sides of the pyrofuse 28 and the first and second current sensors 30a and 30b in the lower case assembly 44. located relatively close in direction. That is, the circuit unit 20 is held by the upper case 38 in the vicinity in the left-right direction of the component parts 18 (pyrofuse 28, first and second current sensors 30a, 30b) connected to the circuit unit 20.
　この電源用配電装置１０は、上述のように電池パック１２の筐体内に収容される。そして、電池パック１２における正極側の出力端子２２ａとＰＣＵ１３における正極側の入力端子２５ａとが、直列に接続された正極側のメインリレー２４ａ、パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂを介して電気的に接続される。また、電池パック１２における負極側の出力端子２２ｂとＰＣＵ１３における負極側の入力端子２５ｂとが、負極側のメインリレー２４ｂを介して電気的に接続される。また、パイロヒューズ２８および第１電流センサ３０ａは、回路ユニット２０におけるプリント基板５８に電気的に接続されており、プリント基板５８に実装された回路に基づいて制御される。なお、第２電流センサ３０ｂは、直接接続されるＥＣＵ２６により制御されてもよいが、ＥＣＵ２６を介して回路ユニット２０（プリント基板５８）により制御されてもよい。 This power distribution device 10 is housed within the casing of the battery pack 12 as described above. The positive output terminal 22a of the battery pack 12 and the positive input terminal 25a of the PCU 13 are connected in series to a positive main relay 24a, a pyrofuse 28, and first and second current sensors 30a, 30b. electrically connected via. Furthermore, the negative output terminal 22b of the battery pack 12 and the negative input terminal 25b of the PCU 13 are electrically connected via the negative main relay 24b. Further, the pyrofuse 28 and the first current sensor 30a are electrically connected to the printed circuit board 58 in the circuit unit 20, and are controlled based on the circuit mounted on the printed circuit board 58. The second current sensor 30b may be controlled by the directly connected ECU 26, or may be controlled by the circuit unit 20 (printed circuit board 58) via the ECU 26.
　すなわち、電源用配電装置１０では、電池パック１２における正極側の出力端子２２ａからＰＣＵ１３における正極側の入力端子２５ａに至る経路上に第１および第２電流センサ３０ａ，３０ｂが設けられており、例えば短絡の発生時において第１および／または第２電流センサ３０ａ，３０ｂが予め設定された電流値（閾値）よりも大きな電流値を検出した際には、回路ユニット２０からパイロヒューズ２８に対して遮断信号を送信して、パイロヒューズ２８を速やかに遮断状態とすることができる。これにより、例えばリレーを遮断状態とする場合に比べて、より確実で速やかな回路遮断が実現され得る。なお、実施形態１では、第１電流センサ３０ａと第２電流センサ３０ｂの何れか一方で異常が検出された場合、パイロヒューズ２８を遮断状態とするようになっていてもよいが、第１電流センサ３０ａと第２電流センサ３０ｂの両方で異常が検出された場合に、パイロヒューズ２８が遮断されるようになっていてもよい。これにより、異常検出の正確性が向上されて、意図しない回路遮断が効果的に防止され得る。 That is, in the power supply distribution device 10, first and second current sensors 30a and 30b are provided on a path from the positive output terminal 22a of the battery pack 12 to the positive input terminal 25a of the PCU 13, for example. When a short circuit occurs and the first and/or second current sensors 30a, 30b detect a current value larger than a preset current value (threshold value), the circuit unit 20 shuts off the pyrofuse 28. By transmitting a signal, the pyrofuse 28 can be quickly turned off. As a result, the circuit can be cut off more reliably and quickly than, for example, when a relay is placed in a cut-off state. In the first embodiment, if an abnormality is detected in either the first current sensor 30a or the second current sensor 30b, the pyrofuse 28 may be cut off. The pyrofuse 28 may be cut off when an abnormality is detected in both the sensor 30a and the second current sensor 30b. This improves the accuracy of abnormality detection and can effectively prevent unintentional circuit breakage.
　実施形態１の電源用配電装置１０によれば、パイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂを制御するプリント基板５８が保持部材６０に固定されており、当該保持部材６０がケース１６を構成するアッパケース３８に組み付けられている。すなわち、プリント基板５８の下面６３が保持部材６０により覆われているとともに、プリント基板５８の上面６１がアッパケース３８における支持部５３により覆われている。これにより、プリント基板５８における上側の保持部材をケース１６を構成するアッパケース３８と一体的に形成することができて、例えばプリント基板をアッパケースに固定する場合に、上下両側が保持部材によって覆われたプリント基板をアッパケースに固定する態様に比べて、上側の保持部材を省くことができる。この結果、上側の保持部材の分、コストを削減できるとともに、アッパケース側組立体５０、ひいては電源用配電装置１０の小型化が図られる。 According to the power distribution device 10 of the first embodiment, the printed circuit board 58 that controls the pyrofuse 28 and the first and second current sensors 30a and 30b is fixed to the holding member 60, and the holding member 60 is attached to the case 16. It is assembled to an upper case 38 that constitutes the. That is, the lower surface 63 of the printed circuit board 58 is covered by the holding member 60, and the upper surface 61 of the printed circuit board 58 is covered by the support portion 53 of the upper case 38. As a result, the upper holding member of the printed circuit board 58 can be formed integrally with the upper case 38 constituting the case 16, so that, for example, when fixing the printed circuit board to the upper case, both the upper and lower sides are covered by the holding member. Compared to a mode in which the printed circuit board is fixed to the upper case, the upper holding member can be omitted. As a result, the cost can be reduced by the amount of the upper holding member, and the upper case side assembly 50 and, by extension, the power distribution device 10 can be made smaller.
　要するに、一般に、プリント基板は他部材との接触回避や絶縁等の観点から上下両側から専用の保護部材で保護された状態で市場に流通しているが、単に上下両側が保護された状態のプリント基板をアッパケースに固定するだけでは、アッパケース組立体、ひいては電源用配電装置の大型化が避けられなかった。それゆえ、実施形態１では、プリント基板の上側の保護部材をアッパケース３８の支持部５３により構成する（アッパケース３８と一体的に形成する）ことで、従来設けられていたプリント基板専用の上側の保護部材を必要とすることがなく、上側の保護部材の分のコストおよび配設スペースの低減を図ることができたのである。したがって、実施形態１では、プリント基板５８を、アッパケース３８および保持部材６０により上下両側から保持した状態や、さらに構成部品１８を組み付けたアッパケース側組立体５０の状態で販売や輸送等することが可能である。 In short, printed circuit boards are generally distributed on the market in a state where they are protected from both the top and bottom sides with special protective members to avoid contact with other components and to insulate them. Simply fixing the board to the upper case inevitably increases the size of the upper case assembly and, by extension, the power distribution device. Therefore, in the first embodiment, the protective member on the upper side of the printed circuit board is constituted by the support part 53 of the upper case 38 (formed integrally with the upper case 38), so that the protective member on the upper side of the printed circuit board, which has been provided conventionally, is This eliminates the need for a second protective member, making it possible to reduce the cost and installation space required for the upper protective member. Therefore, in the first embodiment, the printed circuit board 58 cannot be sold or transported in a state where it is held from both upper and lower sides by the upper case 38 and the holding member 60, or in a state where the upper case side assembly 50 is further assembled with the component parts 18. is possible.
　また、回路構成体１４が、メインリレー２４と、アクティブヒューズとしてのパイロヒューズ２８と、電流センサ３０（第１および第２電流センサ３０ａ，３０ｂ）を含んで構成されており、電流センサ３０の検出値が閾値を超えた場合に、パイロヒューズ２８が遮断されるようになっている。これにより、メインリレーの大型化やコストの増大を伴うことなく、パイロヒューズ２８を遮断状態とすることで、より確実に且つ速やかに回路を遮断することができる。 Further, the circuit component 14 is configured to include a main relay 24, a pyrofuse 28 as an active fuse, and a current sensor 30 (first and second current sensors 30a, 30b). When the value exceeds a threshold value, the pyrofuse 28 is cut off. Thereby, the circuit can be more reliably and quickly cut off by bringing the pyrofuse 28 into the cutoff state without increasing the size of the main relay or increasing cost.
　回路ユニット２０は、弾性ロック片７４を有しているとともに、アッパケース３８は、弾性ロック片７４と係合するロック突部５４を有している。これにより、弾性ロック片７４とロック突部５４とを係合させることで、簡単に且つ速やかに回路ユニット２０をアッパケース３８に組み付けることができる。 The circuit unit 20 has an elastic lock piece 74, and the upper case 38 has a lock protrusion 54 that engages with the elastic lock piece 74. Thereby, the circuit unit 20 can be easily and quickly assembled to the upper case 38 by engaging the elastic lock piece 74 and the lock protrusion 54.
　回路ユニット２０のプリント基板５８は、回路構成体１４の構成部品１８であるパイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂに接続された電線７８の端末に設けられたコネクタ７６ａが装着可能な基板コネクタ６２を備えている。これにより、各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）に接続される電線７８が、プリント基板５８に対してコネクタ接続されることから、各構成部品１８とプリント基板５８との電気的な接続作業を、良好な作業性をもって行うことができる。 The printed circuit board 58 of the circuit unit 20 can be attached with a connector 76a provided at the terminal of an electric wire 78 connected to the pyrofuse 28, which is a component 18 of the circuit component 14, and the first and second current sensors 30a, 30b. A board connector 62 is provided. As a result, the electric wires 78 connected to each component 18 (pyrofuse 28, first and second current sensors 30a, 30b) are connected to the printed circuit board 58 with a connector, so each component 18 and the printed circuit board 58 are connected to each other. Electrical connection work with the board 58 can be performed with good workability.
　回路ユニット２０は、接続される構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）の近傍においてアッパケース３８に保持されている。これにより、回路ユニット２０と各構成部品１８とを接続する電線７８の電線長を短くすることができて、例えば回路ユニット２０による制御のタイムラグ（時間のずれ）を小さく抑えたり、ノイズの影響を抑制して電流センサ３０による電流値の検出精度を向上させることができる。 The circuit unit 20 is held in the upper case 38 near the components 18 (pyrofuse 28, first and second current sensors 30a, 30b) to which it is connected. As a result, the length of the electric wire 78 that connects the circuit unit 20 and each component 18 can be shortened, and, for example, the time lag in control by the circuit unit 20 can be kept small, and the influence of noise can be reduced. It is possible to improve the detection accuracy of the current value by the current sensor 30 by suppressing this.
　ケース１６がロアケース３６とアッパケース３８とを含んで構成されており、アッパケース３８に回路ユニット２０が保持されているとともに、ロアケース３６側に固定される構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）から延びる電線７８がプリント基板５８に接続されている。すなわち、各構成部品１８から上方に延び出す電線７８を、上方に位置するアッパケース３８に保持される回路ユニット２０に接続するだけでよく、良好な作業性をもって電線７８の接続作業を行うことができる。 The case 16 includes a lower case 36 and an upper case 38. The circuit unit 20 is held in the upper case 38, and the components 18 (pyrofuse 28, first and Electric wires 78 extending from the second current sensors 30a, 30b) are connected to the printed circuit board 58. That is, it is only necessary to connect the electric wires 78 extending upward from each component 18 to the circuit unit 20 held in the upper case 38 located above, and the work of connecting the electric wires 78 can be performed with good workability. can.
　保持部材６０が、プリント基板５８の下面６３の全面を覆う大きさで広がる底板６４と、底板６４の外周縁部から突出する周壁６６とを有している。これにより、プリント基板５８と他部材との意図しない接触や電気的な導通がより確実に防止されて、例えばプリント基板５８をアッパケース３８および保持部材６０で覆われた状態で販売や輸送等する場合にも、プリント基板５８の損傷がより確実に回避される。 The holding member 60 has a bottom plate 64 wide enough to cover the entire lower surface 63 of the printed circuit board 58, and a peripheral wall 66 protruding from the outer peripheral edge of the bottom plate 64. This more reliably prevents unintentional contact or electrical continuity between the printed circuit board 58 and other components, so that, for example, the printed circuit board 58 is sold or transported while covered with the upper case 38 and the holding member 60. In this case, damage to the printed circuit board 58 can be more reliably avoided.
＜実施形態２＞
　次に、本開示の実施形態２の電源用配電装置８０について、図１０から図１５を用いて説明する。実施形態２の電源用配電装置８０における基本的な構造は、実施形態１における電源用配電装置１０と同様であるが、プリント基板５８に対するコネクタ７６ａの接続方向が異なっている。以下、実施形態２の電源用配電装置８０において、実施形態１における電源用配電装置１０との相違点について詳細に説明するとともに、実施形態１の電源用配電装置１０と実質的に同一の部材および部位には、図中に、実施形態１と同一の符号を付すことにより詳細な説明を省略する。 <Embodiment 2>
Next, a power distribution device 80 according to a second embodiment of the present disclosure will be described using FIGS. 10 to 15. The basic structure of the power distribution device 80 of the second embodiment is the same as that of the power distribution device 10 of the first embodiment, but the connection direction of the connector 76a to the printed circuit board 58 is different. Hereinafter, the differences between the power distribution device 80 of the second embodiment and the power distribution device 10 of the first embodiment will be explained in detail, and the substantially same members and components as the power distribution device 10 of the first embodiment will be described. Detailed explanations will be omitted by assigning the same reference numerals to the parts in the drawings as in the first embodiment.
　実施形態２の電源用配電装置８０において、ロアケース側組立体４４の構造は実施形態１と同様であるが、図１１から図１４に示されるように、アッパケース側組立体８２の構造が実施形態１とは異なっている。具体的には、アッパケース８４の左端部分（支持部５３）には、構成部品１８であるパイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂに対して接続される各電線７８の端末に設けられたコネクタ７６ａが装着可能なコネクタハウジング８６が設けられている。実施形態２では、それぞれ略矩形の凹部状とされた３つのコネクタハウジング８６が上方に開口するとともに前後方向で相互に離隔して、アッパケース８４と一体的に成形されることで形成されている。そして、図１４，１５にも示されるように、各コネクタハウジング８６の底壁には、後述する回路ユニット９２における複数の基板端子９８が挿通される端子孔８８が、上下方向で貫通して複数設けられている。 In the power distribution device 80 of the second embodiment, the structure of the lower case side assembly 44 is the same as that of the first embodiment, but as shown in FIGS. 11 to 14, the structure of the upper case side assembly 82 is the same as that of the embodiment. It is different from 1. Specifically, the left end portion (support portion 53) of the upper case 84 has terminals of each electric wire 78 connected to the pyrofuse 28, which is the component 18, and the first and second current sensors 30a, 30b. A connector housing 86 is provided to which the provided connector 76a can be attached. In the second embodiment, three connector housings 86 each having a substantially rectangular concave shape open upward and are spaced apart from each other in the front and back direction, and are integrally molded with the upper case 84. . As also shown in FIGS. 14 and 15, in the bottom wall of each connector housing 86, a plurality of terminal holes 88, through which a plurality of board terminals 98 of a circuit unit 92 to be described later are inserted, are formed. It is provided.
　なお、図１５に示されるように、実施形態２においても、支持部５３を構成する上底壁部４６における左端部分の下面において、下方に突出する略矩形枠状の保持枠部５２が設けられており、保持枠部５２の外周面に複数の弾性係合部としてのロック突部５４が形成されている。実施形態２の保持枠部５２には開口部５６が設けられておらず、保持枠部５２が周方向の全周にわたって環状に設けられている。また、上底壁部４６の左端部分において各コネクタハウジング８６を外れた位置には、下方に開口する位置決め凹部９０が形成されている。 Note that, as shown in FIG. 15, also in the second embodiment, a substantially rectangular frame-shaped holding frame portion 52 that protrudes downward is provided on the lower surface of the left end portion of the upper bottom wall portion 46 constituting the support portion 53. A plurality of lock protrusions 54 as elastic engagement parts are formed on the outer peripheral surface of the holding frame part 52. The holding frame portion 52 of the second embodiment is not provided with an opening 56, and the holding frame portion 52 is provided in an annular shape over the entire circumference in the circumferential direction. Furthermore, a positioning recess 90 that opens downward is formed at a position away from each connector housing 86 at the left end portion of the upper bottom wall portion 46 .
＜回路ユニット９２＞
　アッパケース側組立体８２においてアッパケース８４に組み付けられる回路ユニット９２は、実施形態１と同様に、回路ユニット９２に接続される構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）の制御を実行可能な図示しない回路が実装されたプリント基板９４と、プリント基板９４の一方の面である下面６３を覆ってプリント基板９４を保持する保持部材９６とを有している。 <Circuit unit 92>
Similarly to the first embodiment, the circuit unit 92 assembled to the upper case 84 in the upper case side assembly 82 includes the components 18 (pyrofuse 28, first and second current sensors 30a, 30b) connected to the circuit unit 92. ), and a holding member 96 that covers the lower surface 63, which is one surface of the printed circuit board 94, and holds the printed circuit board 94.
　実施形態２のプリント基板９４は、上方に突出する複数の基板端子９８を有している。これらの基板端子９８は、プリント基板９４を貫通して設けられており、プリント基板９４の上面６１および／または下面６３に設けられた回路に対して電気的に接続することができるようになっている。これら複数の基板端子９８は、プリント基板９４の左端部において前後方向で離隔する３箇所に設けられており、各箇所において複数の基板端子９８が、前後方向および左右方向で整列して配置されている。 The printed circuit board 94 of the second embodiment has a plurality of board terminals 98 that protrude upward. These board terminals 98 are provided through the printed circuit board 94 and can be electrically connected to circuits provided on the upper surface 61 and/or lower surface 63 of the printed circuit board 94. There is. The plurality of board terminals 98 are provided at three locations spaced apart in the front-rear direction on the left end of the printed circuit board 94, and the plurality of board terminals 98 are arranged in alignment in the front-back direction and the left-right direction at each location. There is.
　実施形態２の保持部材９６は、実施形態１の保持部材６０と同様の構造であり、略矩形平板状の底板６４と、底板６４の外周縁部から上方に突出する周壁６６とを有している。また、底板６４には、上方に突出する位置決め凸部１００が設けられている。 The holding member 96 of the second embodiment has the same structure as the holding member 60 of the first embodiment, and includes a bottom plate 64 having a substantially rectangular flat plate shape and a peripheral wall 66 projecting upward from the outer peripheral edge of the bottom plate 64. There is. Further, the bottom plate 64 is provided with a positioning convex portion 100 that projects upward.
＜電源用配電装置８０の組み立て工程＞
　続いて、電源用配電装置８０の組み立て工程の具体的な一例について説明する。なお、電源用配電装置８０の組み立て工程は、以下の記載に限定されない。 <Assembling process of power distribution device 80>
Next, a specific example of the assembly process of the power distribution device 80 will be described. Note that the assembly process of the power distribution device 80 is not limited to the following description.
　先ず、実施形態１と同様の工程により、ロアケース側組立体４４を完成させる。次に、保持部材９６の底板６４に対して上方からプリント基板９４を重ね合わせてねじ留めにより固定する。これにより、回路ユニット９２が完成する。回路ユニット９２の完成状態では、各基板端子９８がプリント基板９４から上方に突出しているとともに、位置決め凸部１００がプリント基板９４を貫通して上方に突出している。この回路ユニット９２を、プリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等が固定されたアッパケース８４に対して、下方から接近させて、各ロック突部５４と各弾性ロック片７４とを係合させる。その際、回路ユニット９２から上方に突出する位置決め凸部１００がアッパケース８４における位置決め凹部９０に挿入されるとともに、各基板端子９８がアッパケース８４における各端子孔８８に挿通される。特に、位置決め凸部１００が位置決め凹部９０に挿入されることで、各基板端子９８と各端子孔８８とが位置合わせされて、各基板端子９８が各端子孔８８に対して略ずれることなく挿通される。この結果、アッパケース８４により回路ユニット９２の保持部材９６が保持されて、アッパケース８４に対して回路ユニット９２が組み付けられる。これにより、アッパケース側組立体８２が完成する。 First, the lower case side assembly 44 is completed by the same process as in the first embodiment. Next, the printed circuit board 94 is stacked on the bottom plate 64 of the holding member 96 from above and fixed with screws. As a result, the circuit unit 92 is completed. In the completed state of the circuit unit 92, each board terminal 98 projects upward from the printed circuit board 94, and the positioning convex portion 100 penetrates the printed circuit board 94 and projects upward. This circuit unit 92 is approached from below to an upper case 84 to which the precharge relay 32, precharge resistor 34, bus bars and wiring for electrically connecting them are fixed, and the circuit unit 92 is connected to each lock protrusion 54. Each elastic lock piece 74 is engaged. At this time, the positioning protrusion 100 projecting upward from the circuit unit 92 is inserted into the positioning recess 90 in the upper case 84, and each board terminal 98 is inserted into each terminal hole 88 in the upper case 84. In particular, by inserting the positioning convex portion 100 into the positioning recess 90, each board terminal 98 and each terminal hole 88 are aligned, and each board terminal 98 is inserted into each terminal hole 88 without substantially shifting. be done. As a result, the holding member 96 of the circuit unit 92 is held by the upper case 84, and the circuit unit 92 is assembled to the upper case 84. Thereby, the upper case side assembly 82 is completed.
　このようにして製造されたアッパケース側組立体８２では、各コネクタハウジング８６が上方に開口しているとともに、各コネクタハウジング８６内において各基板端子９８が収容されて上方に向かって突出している。 In the upper case assembly 82 manufactured in this manner, each connector housing 86 is open upward, and each board terminal 98 is housed within each connector housing 86 and projects upward.
　そして、実施形態１と同様の工程により、ロアケース側組立体４４とアッパケース側組立体８２とを重ね合わせて固定する。その後、アッパケース側組立体８２における２つのコネクタハウジング８６内の各基板端子９８と、パイロヒューズ２８および第１電流センサ３０ａとをそれぞれ電気的に接続する。また、アッパケース側組立体８２における残り１つのコネクタハウジング８６内の各基板端子９８と第２電流センサ３０ｂを、ＥＣＵ２６に電気的に接続する。これにより、回路ユニット９２におけるプリント基板９４と、回路構成体１４を構成する構成部品１８であるパイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂとが電気的に接続される。この結果、電源用配電装置８０が完成する。 Then, the lower case side assembly 44 and the upper case side assembly 82 are overlapped and fixed by the same process as in the first embodiment. Thereafter, each board terminal 98 in the two connector housings 86 in the upper case side assembly 82 is electrically connected to the pyrofuse 28 and the first current sensor 30a, respectively. Further, each board terminal 98 in the remaining connector housing 86 in the upper case side assembly 82 and the second current sensor 30b are electrically connected to the ECU 26. Thereby, the printed circuit board 94 in the circuit unit 92, the pyrofuse 28, which is the component 18 constituting the circuit component 14, and the first and second current sensors 30a, 30b are electrically connected. As a result, the power distribution device 80 is completed.
　実施形態２では、各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）に接続される電線７８の端末に、各コネクタハウジング８６に収容される各基板端子９８と電気的に接続可能なコネクタ７６ａが設けられている。すなわち、アッパケース側組立体８２において上方に開口する各コネクタハウジング８６に対して、上方から各コネクタ７６ａを装着することで、プリント基板９４と各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）が電気的に接続されるようになっている。 In the second embodiment, each terminal of the electric wire 78 connected to each component 18 (pyrofuse 28, first and second current sensors 30a, 30b) is electrically connected to each board terminal 98 housed in each connector housing 86. A connector 76a connectable to is provided. That is, by attaching each connector 76a from above to each connector housing 86 that opens upward in the upper case side assembly 82, the printed circuit board 94 and each component 18 (pyrofuse 28, first and second Current sensors 30a, 30b) are electrically connected.
　以上のような構造とされた実施形態２の電源用配電装置８０は、実施形態１の電源用配電装置１０に対して、各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）とプリント基板９４との間のコネクタ接続におけるコネクタ７６ａの差し込み方向が異なるのみであることから、実施形態１と同様の効果が発揮され得る。特に、実施形態２では、各基板端子９８を収容する各コネクタハウジング８６がアッパケース８４と一体的に形成されることから、実施形態１のようなアッパケース３８とは別体とされた基板コネクタ６２を別途準備する必要がなく、基板コネクタ６２が設けられない分、アッパケース８４において回路ユニット９２が組み付けられるために必要なスペースを小さく抑えることができる。これにより、例えばアッパケース８４の上底壁部４６に設けられる段差５１の大きさを小さく抑えることもできて、アッパケース８４やアッパケース側組立体８２の小型化を図ることも可能となる。 The power distribution device 80 of the second embodiment having the above-described structure is different from the power distribution device 10 of the first embodiment in that each component 18 (pyrofuse 28, first and second current sensors 30a, Since the only difference is the insertion direction of the connector 76a in the connector connection between the connector 30b) and the printed circuit board 94, the same effects as in the first embodiment can be achieved. In particular, in the second embodiment, since each connector housing 86 that accommodates each board terminal 98 is formed integrally with the upper case 84, the board connector is separate from the upper case 38 as in the first embodiment. Since there is no need to separately prepare the board connector 62 and the board connector 62 is not provided, the space required for assembling the circuit unit 92 in the upper case 84 can be kept small. Thereby, for example, the size of the step 51 provided on the upper bottom wall portion 46 of the upper case 84 can be kept small, and it is also possible to reduce the size of the upper case 84 and the upper case side assembly 82.
＜実施形態３＞
　次に、本開示の実施形態３の電源用配電装置１１０について、図１６から図１８を用いて説明する。実施形態３の電源用配電装置１１０における基本的な構造は、実施形態１における電源用配電装置１０と同様であるが、回路ユニット１１２が保持部材６０を含まずに構成されている点で異なっている。それゆえ、実施形態３では、ケース１１４と一体的に形成されてプリント基板１１５を支持する支持部１１６が、プリント基板１１５の両方の面（左面１１８および右面１２０）を覆っている。これにより、プリント基板１１５が支持部１１６の内部に配置されている。以下の説明において、実施形態１と実質的に同一の部材および部位には、図中に、実施形態１と同一の符号を付すことにより詳細な説明を省略する。 <Embodiment 3>
Next, a power distribution device 110 according to Embodiment 3 of the present disclosure will be described using FIGS. 16 to 18. The basic structure of the power distribution device 110 of the third embodiment is the same as that of the power distribution device 10 of the first embodiment, except that the circuit unit 112 is configured without the holding member 60. There is. Therefore, in the third embodiment, the support portion 116 that is integrally formed with the case 114 and supports the printed circuit board 115 covers both surfaces (the left surface 118 and the right surface 120) of the printed circuit board 115. Thereby, the printed circuit board 115 is placed inside the support section 116. In the following description, members and parts that are substantially the same as those in Embodiment 1 are designated by the same reference numerals as in Embodiment 1 in the drawings, and detailed description thereof will be omitted.
　実施形態３においても、支持部１１６が、アッパケース１２２の左端部分に設けられている。実施形態３の支持部１１６は全体として上方に開口する矩形箱状であり、支持部１１６における上方開口部１２４がアッパケース１２２の上底壁部４６における左端部分に開口している。すなわち、支持部１１６は、底部１２６と、底部１２６から上方に突出する略筒状の周壁部１２８とを備えており、これら底部１２６および周壁部１２８により上方に開口する矩形箱状の支持部１１６が構成されている。支持部１１６の前後方向寸法は、上周壁部４８を構成する前後両側の壁部の前後方向対向距離よりも小さくされており、支持部１１６は、上周壁部４８を構成する前後両側の壁部の内側においてこれら前後両側の壁部から離隔して設けられている。 In the third embodiment as well, the support portion 116 is provided at the left end portion of the upper case 122. The support portion 116 of the third embodiment has a rectangular box shape that opens upward as a whole, and the upper opening portion 124 of the support portion 116 opens to the left end portion of the upper bottom wall portion 46 of the upper case 122. That is, the support part 116 includes a bottom part 126 and a substantially cylindrical peripheral wall part 128 that projects upward from the bottom part 126. is configured. The front-rear dimension of the support portion 116 is smaller than the facing distance in the front-rear direction of the front and rear walls that constitute the upper peripheral wall portion 48, and the support portion 116 is located on the inner side of the front and rear walls that constitute the upper peripheral wall portion 48. It is provided spaced apart from the walls on both the front and rear sides.
　なお、実施形態３では、プリント基板１１５の一方の面である左面１１８の上端部において、３つの基板コネクタ６２が実装されている。このようなプリント基板１１５から構成される回路ユニット１１２が、支持部１１６における上方開口部１２４から支持部１１６内に挿入されるようになっている。支持部１１６の内部空間における上方部分は各基板コネクタ６２が収容されることから、下方部分に比べて大きくされており、具体的には、支持部１１６の内部空間における左右方向寸法が、下方部分に比べて上方部分の方が大きくされている。 In the third embodiment, three board connectors 62 are mounted on the upper end of the left surface 118, which is one surface of the printed circuit board 115. A circuit unit 112 constituted by such a printed circuit board 115 is inserted into the support part 116 from an upper opening 124 in the support part 116. Since the upper part of the internal space of the support part 116 accommodates each board connector 62, it is made larger than the lower part. Specifically, the left-right dimension of the internal space of the support part 116 is larger than that of the lower part. The upper part is larger than the .
　ここにおいて、実施形態３では、回路ユニット１１２（プリント基板１１５）が支持部１１６に対してねじ留めにより固定されている。特に、実施形態３では、プリント基板１１５が、支持部１１６に対して左方からねじ留めされるようになっている。すなわち、プリント基板１１５にはねじ１３０が挿通されるねじ孔１３２が形成されているとともに、支持部１１６における右側の内面には、ねじ１３０が螺合するねじ穴１３４が形成されている。また、支持部１１６（周壁部１２８）における左側の壁部には、左右方向で貫通する貫通孔１３６が形成されている。実施形態３では、プリント基板１１５における４箇所においてねじ留めされるようになっており、ねじ孔１３２、ねじ穴１３４および貫通孔１３６がそれぞれ対応する位置において４つずつ形成されている。 Here, in the third embodiment, the circuit unit 112 (printed circuit board 115) is fixed to the support part 116 by screwing. In particular, in the third embodiment, the printed circuit board 115 is screwed to the support portion 116 from the left side. That is, a screw hole 132 into which the screw 130 is inserted is formed in the printed circuit board 115, and a screw hole 134 into which the screw 130 is screwed is formed in the right inner surface of the support portion 116. Further, a through hole 136 is formed in the left side wall of the support portion 116 (peripheral wall portion 128), passing through in the left-right direction. In the third embodiment, the printed circuit board 115 is screwed at four locations, and four screw holes 132, four screw holes 134, and four through holes 136 are formed at corresponding positions.
　実施形態３のアッパケース側組立体１３８を組み立てる際には、プリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等が固定されたアッパケース１２２に対して、支持部１１６の上方開口部１２４から回路ユニット１１２を挿入する。そして、例えばプリント基板１１５の下端部が支持部１１６における底部１２６に当接することで、各ねじ孔１３２、各ねじ穴１３４および各貫通孔１３６がそれぞれ位置合わせされる。この状態で、各貫通孔１３６および各ねじ孔１３２を通じて各ねじ１３０を挿通して各ねじ穴１３４に螺合させることで、回路ユニット１１２が支持部１１６に対して固定されるようになっている。なお、各貫通孔１３６は、各ねじ１３０の頭部よりも大きな大きさで形成されてもよく、各ねじ１３０の頭部は支持部１１６内に収容されてもよい。要するに、各貫通孔１３６は、各ねじ１３０を各ねじ穴１３４に螺合させるためのサービスホールとして機能してもよい。回路ユニット１１２が支持部１１６に固定された状態では、回路ユニット１１２における各基板コネクタ６２が、上方開口部１２４を通じて外部（上方）に露出している。 When assembling the upper case side assembly 138 of the third embodiment, the support part is attached to the upper case 122 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring for electrically connecting them are fixed. The circuit unit 112 is inserted through the upper opening 124 of 116 . For example, the lower end of the printed circuit board 115 comes into contact with the bottom 126 of the support portion 116, so that each screw hole 132, each screw hole 134, and each through hole 136 are aligned. In this state, the circuit unit 112 is fixed to the support part 116 by inserting each screw 130 through each through hole 136 and each screw hole 132 and screwing into each screw hole 134. . Note that each through hole 136 may be formed to have a larger size than the head of each screw 130, and the head of each screw 130 may be accommodated within the support portion 116. In short, each through hole 136 may function as a service hole for screwing each screw 130 into each screw hole 134. When the circuit unit 112 is fixed to the support portion 116 , each board connector 62 in the circuit unit 112 is exposed to the outside (upward) through the upper opening 124 .
　このようにして形成されたアッパケース側組立体１３８に対して、例えば実施形態１と同様の構造とされたロアケース側組立体４４が固定される。そして、上方に露出する各基板コネクタ６２に対して、各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）に接続される各電線７８の端末の各コネクタ７６ａが上方から接続されることで、実施形態３の電源用配電装置１１０が構成される。 A lower case assembly 44 having a structure similar to that of the first embodiment, for example, is fixed to the upper case assembly 138 formed in this manner. Then, each connector 76a at the terminal of each electric wire 78 connected to each component 18 (pyrofuse 28, first and second current sensors 30a, 30b) is connected to each board connector 62 exposed upward from above. By being connected, the power distribution device 110 of the third embodiment is configured.
　上記のような実施形態３においても、回路ユニット１１２（プリント基板１１５）が、アッパケース１２２に対して一体的に形成された支持部１１６により覆われて支持されることから、実施形態１と同様の効果が発揮され得る。特に、実施形態３では、保持部材６０を必要とせず、プリント基板１１５の両面（左面１１８および右面１２０）が支持部１１６により覆われて保護される。これにより、実施形態１や実施形態２に比べて部品点数の削減が図られるとともに、保持部材６０の分だけアッパケース側組立体１３８、ひいては電源用配電装置１１０の小型化が図られる。プリント基板１１５は、アッパケース１２２に固定されて支持部１１６により保護された状態で販売や輸送等がされ得て、すなわち、アッパケース１２２自体をプリント基板１１５の保護部材として利用することができる。 Also in the third embodiment described above, the circuit unit 112 (printed circuit board 115) is covered and supported by the support part 116 integrally formed with the upper case 122, so the same as in the first embodiment is achieved. effects can be demonstrated. In particular, in the third embodiment, the holding member 60 is not required, and both sides (the left side 118 and the right side 120) of the printed circuit board 115 are covered and protected by the support part 116. As a result, the number of parts can be reduced compared to Embodiment 1 and Embodiment 2, and the size of the upper case side assembly 138 and, by extension, the power distribution device 110 can be reduced by the amount of the holding member 60. The printed circuit board 115 can be sold, transported, etc. while being fixed to the upper case 122 and protected by the support part 116. In other words, the upper case 122 itself can be used as a protection member for the printed circuit board 115.
＜実施形態４＞
　次に、本開示の実施形態４の電源用配電装置について、図１９から図２１を用いて説明する。実施形態４の電源用配電装置における全体図は実施形態３と同様であることから図示を省略して、図１９から図２１では、実施形態４の電源用配電装置を構成するアッパケース側組立体１４０およびアッパケース１４２を示して説明する。実施形態４のアッパケース側組立体１４０およびアッパケース１４２も、それぞれ実施形態３と同様の構造であるが、実施形態４では、アッパケース１４２に設けられる弾性係合部としてのロック突部１４４によりプリント基板１１５が支持部１４６に固定されるようになっている。 <Embodiment 4>
Next, a power distribution device according to Embodiment 4 of the present disclosure will be described using FIGS. 19 to 21. The overall view of the power distribution device of the fourth embodiment is the same as that of the third embodiment, so illustration is omitted, and FIGS. 19 to 21 show the upper case side assembly constituting the power distribution device of the fourth embodiment. 140 and the upper case 142 will be shown and explained. The upper case side assembly 140 and the upper case 142 of the fourth embodiment also have the same structure as the third embodiment, but in the fourth embodiment, the lock protrusion 144 as an elastic engagement part provided on the upper case 142 The printed circuit board 115 is fixed to the support portion 146.
　具体的には、図１９から図２１に示されるように、上方に開口する矩形箱状の支持部１４６が、アッパケース１４２の左端部分に一体的に設けられている。すなわち、実施形態４の支持部１４６も底部１２６と、底部１２６から上方に突出する略筒状の周壁部１２８とを備えており、支持部１４６における上方開口部１２４がアッパケース１４２の上底壁部４６に開口している。また、支持部１４６における底部１２６には上方に開口する略箱状の舌片収容部１４８が設けられており、プリント基板１１５の下端に設けられる後述する弾性舌片１６０が収容されるようになっている。この舌片収容部１４８は、支持部１４６における右側の内面から連続して設けられており、要するに、舌片収容部１４８は、支持部１４６の底部１２６と右側の内面にまたがるように設けられている。実施形態４では、一対の舌片収容部１４８，１４８が前後方向で相互に離隔して設けられている。これら各舌片収容部１４８を構成する左側の壁部において、前述のロック突部１４４が設けられている。すなわち、各ロック突部１４４は底部１２６から上方に突出して左右方向に弾性変形可能であり、各ロック突部１４４の上端部には、舌片収容部１４８内に突出する係合爪部１５０が設けられている。 Specifically, as shown in FIGS. 19 to 21, a rectangular box-shaped support portion 146 that opens upward is integrally provided at the left end portion of the upper case 142. That is, the support part 146 of the fourth embodiment also includes a bottom part 126 and a substantially cylindrical peripheral wall part 128 that projects upward from the bottom part 126, and the upper opening part 124 of the support part 146 is formed on the upper bottom wall of the upper case 142. It is open to the section 46. Further, the bottom portion 126 of the support portion 146 is provided with a substantially box-shaped tongue accommodating portion 148 that opens upward, and accommodates an elastic tongue 160 provided at the lower end of the printed circuit board 115, which will be described later. ing. This tongue piece accommodating part 148 is provided continuously from the right inner surface of the support part 146. In short, the tongue piece accommodating part 148 is provided so as to straddle the bottom part 126 and the right inner surface of the support part 146. There is. In the fourth embodiment, a pair of tongue accommodating portions 148, 148 are provided spaced apart from each other in the front-rear direction. The aforementioned lock protrusion 144 is provided on the left side wall portion of each of these tongue accommodating portions 148 . That is, each lock protrusion 144 protrudes upward from the bottom part 126 and can be elastically deformed in the left-right direction, and the upper end of each lock protrusion 144 has an engaging claw part 150 that protrudes into the tongue housing part 148. It is provided.
　また、支持部１４６の前後方向両側の内面には、回路ユニット１５２が支持部１４６に上方から挿入された際に、回路ユニット１５２（プリント基板１１５）の上方から下方への移動を案内するガイド溝部１５４が設けられている。ガイド溝部１５４は上下方向に延びており、支持部１４６に対して回路ユニット１５２（プリント基板１１５）が上方から挿入された際に、プリント基板１１５の前後方向両端部が前後方向両側の各ガイド溝部１５４に挿し入れられるようになっている。さらに、支持部１４６の前後方向両側の内面の上端部には前後方向内方に開口する収容凹部１５６が設けられており、これら各収容凹部１５６には、プリント基板１１５の上端に設けられる後述する外方突出部１６６が収容される。各収容凹部１５６における左右方向両側の内面には、各収容凹部１５６の内方に突出して上下方向に延びる突条１５８が設けられており、プリント基板１１５における各外方突出部１６６は、各収容凹部１５６に対して圧入状態で挿入されるようになっている。 In addition, guide grooves are provided on the inner surfaces of both sides of the support part 146 in the front and back directions to guide the movement of the circuit unit 152 (printed circuit board 115) from above to below when the circuit unit 152 is inserted into the support part 146 from above. 154 are provided. The guide groove portion 154 extends in the vertical direction, and when the circuit unit 152 (printed circuit board 115) is inserted into the support portion 146 from above, both ends of the printed circuit board 115 in the front and back direction are inserted into the respective guide grooves on both sides in the front and rear direction. 154. Furthermore, accommodation recesses 156 that open inward in the front and back direction are provided at the upper end portions of the inner surfaces on both sides of the support portion 146 in the front and back directions. An outward protrusion 166 is accommodated. Projections 158 that protrude inwardly and extend in the vertical direction are provided on the inner surfaces of each accommodation recess 156 on both sides in the left-right direction. It is inserted into the recess 156 in a press-fit state.
　実施形態４の回路ユニット１５２を構成するプリント基板１１５には、左面１１８における上端部において、実施形態３と同様に３つの基板コネクタ６２が実装されている。また、プリント基板１１５の下端には、プリント基板１１５の板厚方向（左右方向）で弾性変形可能な弾性舌片１６０が設けられている。弾性舌片１６０の前後方向両側にはプリント基板１１５の下端から上下方向に延びるスリット１６２が設けられており、これら各スリット１６２が設けられることにより弾性舌片１６０が左右方向で弾性変形可能とされている。実施形態４では、一対の弾性舌片１６０，１６０が前後方向で相互に離隔して設けられている。各弾性舌片１６０の突出先端部（下端部）には、板厚方向で貫通する係合孔１６４が形成されている。さらに、プリント基板１１５の上端部における左右方向両端部には、左右方向外方に突出する略矩形の外方突出部１６６が設けられている。 As in the third embodiment, three board connectors 62 are mounted on the printed circuit board 115 constituting the circuit unit 152 of the fourth embodiment at the upper end of the left surface 118. Furthermore, an elastic tongue piece 160 that can be elastically deformed in the thickness direction (left-right direction) of the printed circuit board 115 is provided at the lower end of the printed circuit board 115. Slits 162 extending vertically from the lower end of the printed circuit board 115 are provided on both sides of the elastic tongue piece 160 in the front-rear direction, and the provision of these slits 162 allows the elastic tongue piece 160 to be elastically deformed in the left-right direction. ing. In the fourth embodiment, a pair of elastic tongues 160, 160 are provided spaced apart from each other in the front-rear direction. An engagement hole 164 penetrating in the thickness direction is formed at the protruding tip (lower end) of each elastic tongue piece 160. Further, substantially rectangular outward protrusions 166 that protrude outward in the left-right direction are provided at both left-right end portions of the upper end of the printed circuit board 115 .
　実施形態４のアッパケース側組立体１４０を組み立てる際には、プリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等が固定されたアッパケース１４２に対して、支持部１４６の上方開口部１２４から回路ユニット１５２を挿入する。これにより、プリント基板１１５の前後方向両端部が前後方向両側の各ガイド溝部１５４に挿入されて、回路ユニット１５２の上方から下方への移動が案内される。そして、回路ユニット１５２が支持部１４６内を下方に移動することで、図１９に示されるように、プリント基板１１５の下端における各弾性舌片１６０が各舌片収容部１４８に収容されて、各舌片収容部１４８内で各係合爪部１５０と各係合孔１６４とが係合する。また、プリント基板１１５から前後方向両側に突出する各外方突出部１６６が支持部１４６の内面における各収容凹部１５６内に略圧入状態で収容される。この結果、回路ユニット１５２が支持部１４６に対して固定されて、アッパケース側組立体１４０が組み立てられる。そして、このアッパケース側組立体１４０に対して、実施形態１と同様のロアケース側組立体４４が固定されることで実施形態４の電源用配電装置が製造されるようになっている。 When assembling the upper case side assembly 140 of the fourth embodiment, the support part is attached to the upper case 142 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring that electrically connect them are fixed. The circuit unit 152 is inserted through the upper opening 124 of 146 . As a result, both end portions of the printed circuit board 115 in the front and rear directions are inserted into the respective guide grooves 154 on both sides in the front and back direction, and the movement of the circuit unit 152 from above to below is guided. Then, as the circuit unit 152 moves downward within the support part 146, each elastic tongue piece 160 at the lower end of the printed circuit board 115 is accommodated in each tongue piece housing part 148, as shown in FIG. Each engagement claw portion 150 and each engagement hole 164 engage with each other within the tongue piece accommodating portion 148 . Further, each outwardly protruding portion 166 that protrudes from the printed circuit board 115 in both directions in the front and back direction is accommodated in each accommodating recess 156 on the inner surface of the support portion 146 in a substantially press-fit state. As a result, the circuit unit 152 is fixed to the support portion 146, and the upper case side assembly 140 is assembled. Then, a lower case side assembly 44 similar to that of the first embodiment is fixed to this upper case side assembly 140, so that the power distribution device of the fourth embodiment is manufactured.
　実施形態４の電源用配電装置は、支持部１４６に対する回路ユニット１５２の固定方法が実施形態３と異なるのみであることから、実施形態３と同様の効果が発揮され得る。特に、実施形態３では回路ユニット１１２が支持部１１６に対してねじ留めで固定されていたが、実施形態４では、各係合爪部１５０と各係合孔１６４との係合および各外方突出部１６６における各収容凹部１５６への圧入により回路ユニット１５２が支持部１４６に対して固定される。それゆえ、実施形態３における各ねじ１３０のような固定用の別部材を設けることがなく、回路ユニット１５２を支持部１４６内に挿入することで固定されることから、部品点数の削減と組立効率の向上が図られる。 The power distribution device of the fourth embodiment differs from the third embodiment only in the method of fixing the circuit unit 152 to the support portion 146, and therefore can exhibit the same effects as the third embodiment. In particular, in the third embodiment, the circuit unit 112 was fixed to the support part 116 with screws, but in the fourth embodiment, the engagement between each engagement claw part 150 and each engagement hole 164, and the The circuit unit 152 is fixed to the support portion 146 by press-fitting the protrusion portion 166 into each accommodation recess 156 . Therefore, there is no need to provide separate members for fixing, such as the screws 130 in Embodiment 3, and the circuit unit 152 is fixed by inserting it into the support part 146, which reduces the number of parts and improves assembly efficiency. This will lead to improvements in
＜実施形態５＞
　次に、本開示の実施形態５の電源用配電装置１７０について、図２２から図２４を用いて説明する。実施形態３，４では、支持部１１６，１４６に対して回路ユニット１１２，１５２が上方から挿入されていたが、実施形態５では、支持部１７２に対して回路ユニット１７４が下方から挿入されている。すなわち、実施形態５における支持部１７２は、実施形態３，４と同様に底部１２６と周壁部１２８とを備える略矩形箱状であるが、底部１２６において回路ユニット１７４を挿入するための下方開口部１７６が設けられている。 <Embodiment 5>
Next, a power distribution device 170 according to Embodiment 5 of the present disclosure will be described using FIGS. 22 to 24. In the third and fourth embodiments, the circuit units 112 and 152 were inserted into the support parts 116 and 146 from above, but in the fifth embodiment, the circuit unit 174 was inserted into the support part 172 from below. . That is, the support portion 172 in the fifth embodiment has a substantially rectangular box shape including a bottom portion 126 and a peripheral wall portion 128 as in the third and fourth embodiments, but the bottom portion 126 has a lower opening for inserting the circuit unit 174. 176 are provided.
　具体的には、実施形態５においても回路ユニット１７４（プリント基板１７７）を支持する支持部１７２が、アッパケース１７８の左端部分に一体的に形成されている。また、実施形態５における支持部１７２の上端部には、実施形態２と同様に、それぞれ略矩形の凹部状とされた３つのコネクタハウジング８６が上方に開口して一体的に形成されている。これら各コネクタハウジング８６は前後方向で相互に離隔しており、各コネクタハウジング８６の底壁には複数の端子孔８８が上下方向で貫通して設けられている。回路ユニット１７４におけるプリント基板１７７には複数の基板端子９８が実装されて上方に突出しており、支持部１７２内に回路ユニット１７４が固定された際には、支持部１７２に設けられた各端子孔８８に対して、回路ユニット１７４における複数の基板端子９８が挿通されるようになっている。 Specifically, in the fifth embodiment as well, the support portion 172 that supports the circuit unit 174 (printed circuit board 177) is integrally formed at the left end portion of the upper case 178. Further, at the upper end of the support portion 172 in the fifth embodiment, three connector housings 86 each having a substantially rectangular concave shape are integrally formed with upward openings, as in the second embodiment. These connector housings 86 are spaced apart from each other in the front-rear direction, and a plurality of terminal holes 88 are provided in the bottom wall of each connector housing 86 so as to pass through the connector housings 86 in the vertical direction. A plurality of board terminals 98 are mounted on the printed circuit board 177 of the circuit unit 174 and protrude upward, and when the circuit unit 174 is fixed in the support part 172, each terminal hole provided in the support part 172 A plurality of board terminals 98 in the circuit unit 174 are inserted through the terminals 88 .
　実施形態５では、支持部１７２に挿入された回路ユニット１７４が、実施形態３と同様にねじ留めにより固定されるようになっている。すなわち、プリント基板１７７には各ねじ１３０が挿通される各ねじ孔１３２がプリント基板１７７の板厚方向（左右方向）に貫通して形成されているとともに、支持部１７２における右側の内面には、各ねじ１３０が螺合する各ねじ穴１３４が形成されている。また、支持部１７２（周壁部１２８）における左側の壁部には、サービスホールとしての機能を有する各貫通孔１３６が、左右方向で貫通して設けられている。なお、支持部１７２における前後方向両側の内面には、実施形態４と同様の各ガイド溝部１５４が上下方向に延びて設けられてもよい。 In the fifth embodiment, the circuit unit 174 inserted into the support portion 172 is fixed by screwing, as in the third embodiment. That is, each screw hole 132 into which each screw 130 is inserted is formed in the printed circuit board 177 so as to pass through the printed circuit board 177 in the board thickness direction (horizontal direction), and on the right inner surface of the support portion 172, Each screw hole 134 into which each screw 130 is screwed is formed. Further, in the left side wall of the support portion 172 (peripheral wall portion 128), through holes 136 having a function as a service hole are provided to penetrate in the left-right direction. In addition, each guide groove part 154 similar to Embodiment 4 may be provided in the inner surface of the support part 172 on both sides in the front-back direction so as to extend in the vertical direction.
　実施形態５のアッパケース側組立体１８０を組み立てる際には、プリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等が固定されたアッパケース１７８に対して、支持部１７２の下方開口部１７６から回路ユニット１７４を挿入する。そして、例えばプリント基板１７７の上端部が支持部１７２における上方の壁部に当接することで、各ねじ孔１３２、各ねじ穴１３４および各貫通孔１３６がそれぞれ位置合わせされる。この状態で、各貫通孔１３６および各ねじ孔１３２を通じて各ねじ１３０を挿通して各ねじ穴１３４に螺合させることで、回路ユニット１７４が支持部１７２に対して固定されるようになっている。また、回路ユニット１７４が支持部１７２内に挿入されることで、支持部１７２に設けられた各端子孔８８に対して、回路ユニット１７４における複数の基板端子９８が挿通される。特に、支持部１７２内における回路ユニット１７４の上方への移動が各ガイド溝部１５４によって案内されることで、各端子孔８８への基板端子９８の挿通が安定して達成され得る。 When assembling the upper case side assembly 180 of the fifth embodiment, the support part is attached to the upper case 178 to which the precharge relay 32, the precharge resistor 34, the bus bar and wiring, etc. that electrically connect them are fixed. The circuit unit 174 is inserted through the lower opening 176 of 172 . Then, for example, the upper end of the printed circuit board 177 comes into contact with the upper wall of the support section 172, thereby aligning each screw hole 132, each screw hole 134, and each through hole 136, respectively. In this state, the circuit unit 174 is fixed to the support portion 172 by inserting each screw 130 through each through hole 136 and each screw hole 132 and screwing into each screw hole 134. . Further, by inserting the circuit unit 174 into the support portion 172, the plurality of board terminals 98 in the circuit unit 174 are inserted into each terminal hole 88 provided in the support portion 172. In particular, since the upward movement of the circuit unit 174 within the support portion 172 is guided by each guide groove portion 154, insertion of the board terminal 98 into each terminal hole 88 can be stably achieved.
　このようにして形成されたアッパケース側組立体１８０に対して、例えば実施形態１と同様の構造とされたロアケース側組立体４４が固定される。そして、実施形態２と同様に、アッパケース側組立体１８０において上方に開口する各コネクタハウジング８６に対して、上方から各コネクタ７６ａを装着することで、プリント基板１７７と各構成部品１８（パイロヒューズ２８、第１および第２電流センサ３０ａ，３０ｂ）が電気的に接続されるようになっている。これにより、実施形態５の電源用配電装置１７０が構成される。 A lower case assembly 44 having a structure similar to that of the first embodiment, for example, is fixed to the upper case assembly 180 formed in this manner. Then, as in the second embodiment, by attaching each connector 76a from above to each connector housing 86 that opens upward in the upper case side assembly 180, the printed circuit board 177 and each component 18 (pyrofuse 28, the first and second current sensors 30a, 30b) are electrically connected. As a result, the power distribution device 170 of the fifth embodiment is configured.
　実施形態５の電源用配電装置１７０は、支持部１７２に対する回路ユニット１７４の挿入方法が実施形態３と異なるのみであることから、実施形態３と同様の効果が発揮され得る。また、実施形態２と同様に、各基板端子９８を収容する各コネクタハウジング８６がアッパケース１７８における支持部１７２と一体的に形成されることから、実施形態３のような基板コネクタ６２を別途準備する必要がなく、基板コネクタ６２が設けられない分、アッパケース側組立体１８０、ひいては電源用配電装置１７０を小型化することができる。 The power distribution device 170 of the fifth embodiment differs from the third embodiment only in the method of inserting the circuit unit 174 into the support portion 172, and thus can exhibit the same effects as the third embodiment. Further, as in the second embodiment, since each connector housing 86 that accommodates each board terminal 98 is integrally formed with the support portion 172 in the upper case 178, the board connector 62 as in the third embodiment is prepared separately. Since the board connector 62 is not provided, the upper case side assembly 180 and, by extension, the power distribution device 170 can be downsized.
＜実施形態６＞
　次に、本開示の実施形態６の電源用配電装置について、図２５から図２７を用いて説明する。実施形態６の電源用配電装置における全体図は実施形態５と同様であることから図示を省略して、図２５から図２７では、実施形態６の電源用配電装置を構成するアッパケース側組立体１９０およびアッパケース１９２を示して説明する。実施形態６のアッパケース側組立体１９０およびアッパケース１９２も、それぞれ実施形態５と同様の構造であるが、実施形態６では、アッパケース１９２に設けられる弾性係合部としてのロック突部１９４によりプリント基板１７７が支持部１９６に固定されるようになっている。 <Embodiment 6>
Next, a power distribution device according to Embodiment 6 of the present disclosure will be described using FIGS. 25 to 27. The overall view of the power distribution device of the sixth embodiment is the same as that of the fifth embodiment, so illustration is omitted, and FIGS. 25 to 27 show the upper case side assembly constituting the power distribution device of the sixth embodiment. 190 and upper case 192 will be shown and explained. The upper case side assembly 190 and the upper case 192 of the sixth embodiment also have the same structure as the fifth embodiment, but in the sixth embodiment, the lock protrusion 194 as an elastic engagement part provided on the upper case 192 A printed circuit board 177 is fixed to the support portion 196.
　具体的には、図２５から図２７に示されるように、下方に開口する矩形箱状の支持部１９６が、アッパケース１９２の左端部分に一体的に設けられている。すなわち、実施形態６の支持部１９６も底部１２６と、底部１２６から上方に突出する略筒状の周壁部１２８とを備えており、支持部１９６における下方開口部１７６が底部１２６に設けられている。また、支持部１９６における右側の内面からは、ロック突部１９４が左右方向で弾性変形可能なように下方に突出して設けられており、ロック突部１９４の下端部には、左方に突出する係合爪部１９８が設けられている。実施形態６では、一対のロック突部１９４，１９４が前後方向で相互に離隔して設けられている。 Specifically, as shown in FIGS. 25 to 27, a support portion 196 in the shape of a rectangular box that opens downward is integrally provided at the left end portion of the upper case 192. That is, the support portion 196 of the sixth embodiment also includes a bottom portion 126 and a substantially cylindrical peripheral wall portion 128 projecting upward from the bottom portion 126, and a lower opening 176 in the support portion 196 is provided in the bottom portion 126. . Further, a lock protrusion 194 is provided to protrude downward from the right inner surface of the support portion 196 so as to be elastically deformable in the left-right direction. An engaging claw portion 198 is provided. In the sixth embodiment, a pair of lock protrusions 194, 194 are provided spaced apart from each other in the front-rear direction.
　そして、実施形態６においても、実施形態５と同様に、支持部１９６の上端部に略矩形の凹部状とされた３つのコネクタハウジング８６が上方に開口して一体的に形成されている。また、支持部１９６における前後方向両側の内面には、実施形態４と同様の各ガイド溝部１５４が上下方向に延びて設けられている。 In the sixth embodiment as well, similarly to the fifth embodiment, three connector housings 86 having substantially rectangular concave shapes are integrally formed at the upper end of the support portion 196 with upward openings. Further, guide grooves 154 similar to those in the fourth embodiment are provided on the inner surfaces of the support portion 196 on both sides in the front-rear direction and extend in the up-down direction.
　実施形態６のアッパケース側組立体１９０を組み立てる際には、プリチャージリレー３２やプリチャージ抵抗３４、それらを電気的に接続するバスバーや配線等が固定されたアッパケース１９２に対して、支持部１９６の下方開口部１７６から回路ユニット２００を挿入する。これにより、プリント基板１７７の前後方向両端部が前後方向両側の各ガイド溝部１５４に挿入されて、回路ユニット２００の下方から上方への移動が案内される。なお、回路ユニット２００を支持部１９６の下方開口部１７６から挿入するに際して、プリント基板１７７の上端部が各ロック突部１９４に当接して、各ロック突部１９４を右方へ弾性変形させる。その後、回路ユニット２００が上方へ移動して、各ロック突部１９４における各係合爪部１９８がプリント基板１７７の下端縁部を乗り越えることで、各ロック突部１９４が弾性的に復元変形して、図２５に示されるように、各係合爪部１９８がプリント基板１７７の下端縁部に係合する。 When assembling the upper case side assembly 190 of the sixth embodiment, the support part is attached to the upper case 192 to which the precharge relay 32, the precharge resistor 34, and the bus bar and wiring for electrically connecting them are fixed. The circuit unit 200 is inserted through the lower opening 176 of 196 . As a result, both end portions of the printed circuit board 177 in the front-back direction are inserted into the guide grooves 154 on both sides in the front-back direction, and the movement of the circuit unit 200 from below to above is guided. Note that when the circuit unit 200 is inserted through the lower opening 176 of the support section 196, the upper end of the printed circuit board 177 comes into contact with each lock protrusion 194, causing each lock protrusion 194 to elastically deform to the right. Thereafter, the circuit unit 200 moves upward, and each engagement claw part 198 of each lock protrusion 194 rides over the lower edge of the printed circuit board 177, so that each lock protrusion 194 is elastically restored and deformed. As shown in FIG. 25, each engaging claw portion 198 engages with the lower edge of the printed circuit board 177. As shown in FIG.
　また、回路ユニット２００が支持部１９６内に挿入されることで、支持部１９６に設けられた各端子孔８８に対して、回路ユニット２００における複数の基板端子９８が挿通される。特に、支持部１９６内における回路ユニット２００の上方への移動が各ガイド溝部１５４によって案内されることで、各端子孔８８への基板端子９８の挿通が安定して達成され得る。この結果、回路ユニット２００が支持部１９６に対して固定されて、アッパケース側組立体１９０が組み立てられる。そして、このアッパケース側組立体１９０に対して、実施形態１と同様のロアケース側組立体４４が固定されることで実施形態６の電源用配電装置が製造されるようになっている。 Furthermore, by inserting the circuit unit 200 into the support part 196, the plurality of board terminals 98 in the circuit unit 200 are inserted into each terminal hole 88 provided in the support part 196. In particular, upward movement of the circuit unit 200 within the support portion 196 is guided by each guide groove portion 154, so that insertion of the board terminal 98 into each terminal hole 88 can be stably achieved. As a result, the circuit unit 200 is fixed to the support portion 196, and the upper case side assembly 190 is assembled. A lower case assembly 44 similar to that of the first embodiment is fixed to the upper case assembly 190 to manufacture the power distribution device of the sixth embodiment.
　実施形態６の電源用配電装置は、支持部１９６に対する回路ユニット２００の固定方法が実施形態５と異なるのみであることから、実施形態５と同様の効果が発揮され得る。特に、実施形態５では回路ユニット１７４が支持部１７２に対してねじ留めで固定されていたが、実施形態６では、各係合爪部１９８とプリント基板１７７の下端縁部との係合や各ガイド溝部１５４へのプリント基板１７７の挿入、各端子孔８８への各基板端子９８への挿通等により回路ユニット２００が支持部１９６に対して固定される。それゆえ、実施形態５における各ねじ１３０のような固定用の別部材を設けることがなく、回路ユニット２００を支持部１９６内に挿入することで固定されることから、部品点数の削減と組立効率の向上が図られる。 The power distribution device of the sixth embodiment differs from the fifth embodiment only in the method of fixing the circuit unit 200 to the support portion 196, and therefore can exhibit the same effects as the fifth embodiment. In particular, in the fifth embodiment, the circuit unit 174 was fixed to the support part 172 with screws, but in the sixth embodiment, the engagement between each engagement claw part 198 and the lower edge of the printed circuit board 177, The circuit unit 200 is fixed to the support portion 196 by inserting the printed circuit board 177 into the guide groove 154 and inserting each board terminal 98 into each terminal hole 88 . Therefore, since the circuit unit 200 is fixed by inserting it into the support part 196 without providing a separate fixing member like each screw 130 in the fifth embodiment, the number of parts can be reduced and assembly efficiency can be improved. This will lead to improvements in
＜変形例＞
　以上、本開示の具体例として、実施形態１から実施形態６について詳述したが、本開示はこの具体的な記載によって限定されない。本開示の目的を達成できる範囲での変形、改良等は本開示に含まれるものである。例えば次のような実施形態の変形例も本開示の技術的範囲に含まれる。 <Modified example>
Although Embodiment 1 to Embodiment 6 have been described in detail as specific examples of the present disclosure, the present disclosure is not limited by this specific description. Modifications, improvements, etc. within the scope of achieving the objectives of the present disclosure are included in the present disclosure. For example, the following modifications of the embodiment are also included in the technical scope of the present disclosure.
（１）前記実施形態では、回路ユニット２０，９２，１１２，１５２，１７４，２００がパイロヒューズ２８と第１および第２電流センサ３０ａ，３０ｂに接続されて、第１および第２電流センサ３０ａ，３０ｂにおいて閾値を超える電流値が検出された場合、パイロヒューズ２８が遮断状態とされるようになっていたが、本開示の電源用配電装置は、この態様に限定されるものではない。すなわち、回路ユニットに接続される回路構成体の構成部品として、例えば前記実施形態のような電流センサに代えて、または加えて、電圧センサや温度センサ等が設けられてもよく、電流センサや電圧センサ、温度センサ等の少なくとも２つが組み合わされて採用されてもよい。要するに、回路ユニットは構成部品の制御だけでなく電源用配電装置の状態の監視を行えるようになっていてもよく、電力経路における電圧や、電池パックやケース内の温度が測定されるようになっていてもよいし、通電状態（あるいは、絶縁状態）にあるか否かを監視するようになっていてもよい。 (1) In the embodiment, the circuit units 20, 92, 112, 152, 174, 200 are connected to the pyrofuse 28 and the first and second current sensors 30a, 30b, and the first and second current sensors 30a, When a current value exceeding a threshold value is detected at 30b, the pyrofuse 28 is cut off, but the power distribution device of the present disclosure is not limited to this embodiment. That is, as a component of the circuit structure connected to the circuit unit, for example, instead of or in addition to the current sensor as in the above embodiment, a voltage sensor, a temperature sensor, etc. may be provided. A combination of at least two of sensors, temperature sensors, etc. may be employed. In short, the circuit unit may be capable of not only controlling components but also monitoring the status of the power distribution equipment, such as measuring the voltage in the power path or the temperature inside the battery pack or case. Alternatively, it may be possible to monitor whether or not it is in an energized state (or an insulated state).
　そして、例えば回路ユニットに接続される構成部品として温度センサが採用されて、前記実施形態のようにロアケースに配設された場合、構成部品（温度センサ）を発熱部品であるリレーやヒューズに比較的近い位置に設けることができるだけでなく、温度センサとそれを監視する回路ユニットとを接続する電線長を短くすることができる。それゆえ、例えば構成部品（温度センサ）がＥＣＵ等に接続される場合に比べて、監視のタイムラグやノイズの影響を小さく抑えることができて、ケース内の温度をより精度良く測定（監視）することができる。 For example, when a temperature sensor is adopted as a component connected to a circuit unit and is arranged in the lower case as in the above embodiment, the component (temperature sensor) is relatively attached to a relay or fuse that is a heat generating component. Not only can the temperature sensor be provided in a close position, but also the length of the electric wire connecting the temperature sensor and the circuit unit that monitors it can be shortened. Therefore, compared to, for example, the case where a component (temperature sensor) is connected to an ECU, etc., the time lag of monitoring and the influence of noise can be suppressed, and the temperature inside the case can be measured (monitored) more accurately. be able to.
　なお、このように電源用配電装置の状態が監視される態様の場合、監視の結果、異常が検出された際に、必ずしもアクティブヒューズによって回路が遮断される必要はなく、本開示の電源用配電装置においてアクティブヒューズは必須なものではない。また、異常検出時にアクティブヒューズにより回路が遮断される場合でも、アクティブヒューズはパイロヒューズである必要はなく、外部からの信号によって切断可能な素子であればよいことから、例えば金属酸化物半導体電界効果トランジスタ（ＭＯＳＦＥＴ）を用いてアクティブヒューズが構成されてもよい。さらに、前記実施形態のように電流センサを用いて異常電流を検出する場合でも、電流センサは２つに限定されるものではなく、１つでもよいし、３つ以上でもよい。そして、電力経路上において電流センサの配設位置は限定されるものではなく、電流センサは、例えばメインリレーよりも電池パックの出力端子側に設けられてもよい。 Note that in the case where the state of the power distribution device is monitored in this manner, when an abnormality is detected as a result of monitoring, the circuit does not necessarily have to be cut off by an active fuse, and the power distribution device of the present disclosure Active fuses are not essential in the device. Furthermore, even if the circuit is cut off by an active fuse when an abnormality is detected, the active fuse does not have to be a pyrofuse, but can be any element that can be disconnected by an external signal. An active fuse may be configured using a transistor (MOSFET). Furthermore, even when abnormal current is detected using a current sensor as in the embodiment, the number of current sensors is not limited to two, and may be one, three or more. The location of the current sensor on the power path is not limited, and the current sensor may be provided closer to the output terminal of the battery pack than the main relay, for example.
（２）前記実施形態１，２，４，６では、回路ユニット２０，９２，１５２，２００が弾性係合部としてのロック突部５４，１４４，１９４と係合することで支持部５３，１４６，１９６に支持されていたが、実施形態３，５のようにボルトやねじにより固定されてもよいし、例えば圧入により固定されてもよい。なお、回路ユニットにおいて保持部材が設けられる場合は、実施形態１，２のように弾性係合部は保持部材と係合してもよいし、保持部材が設けられない場合は、実施形態４，６のように弾性係合部はプリント基板と係合してもよい。また、実施形態１，２では、回路ユニット２０，９２（保持部材６０，９６）が弾性ロック片７４を有するとともに、アッパケース３８，８４（支持部５３）がロック突部５４を有していたが、保持部材にロック突部が設けられてアッパケースにおける支持部に弾性ロック片が設けられてもよい。同様に、実施形態４，６においても、ロック突部が回路ユニット（プリント基板）に設けられて、ロック突部と係合する部分がアッパケースにおける支持部に設けられてもよい。なお、前記実施形態１では、プリント基板５８を間に挟んだ状態で支持部５３と保持部材６０とを組み付けることでプリント基板５８を支持部５３の内部に配置していたが、左方に開口部を有する支持部に対してプリント基板を左方から挿入して、ボルトや弾性係合部によりプリント基板と支持部とを固定するようになっていてもよい。 (2) In Embodiments 1, 2, 4, and 6, the circuit units 20, 92, 152, 200 engage with the lock protrusions 54, 144, 194 as elastic engagement portions, so that the supporting portions 53, 146 , 196, but it may be fixed with bolts or screws as in the third and fifth embodiments, or may be fixed by press-fitting, for example. Note that when a holding member is provided in the circuit unit, the elastic engagement portion may engage with the holding member as in Embodiments 1 and 2, and when a holding member is not provided, as in Embodiment 4, The elastic engagement portion may engage with the printed circuit board as shown in 6. Further, in the first and second embodiments, the circuit units 20 and 92 (holding members 60 and 96) had the elastic locking pieces 74, and the upper cases 38 and 84 (supporting parts 53) had the locking protrusions 54. However, the holding member may be provided with a locking protrusion, and the support portion of the upper case may be provided with an elastic locking piece. Similarly, in the fourth and sixth embodiments, the lock protrusion may be provided on the circuit unit (printed circuit board), and the portion that engages with the lock protrusion may be provided on the support portion of the upper case. In the first embodiment, the printed circuit board 58 is placed inside the support section 53 by assembling the support section 53 and the holding member 60 with the printed circuit board 58 sandwiched between them, but the opening on the left side The printed circuit board may be inserted from the left side into the support section having a section, and the printed circuit board and the support section may be fixed using bolts or elastic engagement sections.
（３）前記実施形態１，２では、保持部材６０，９６が、プリント基板５８，９４の下面６３の全面を覆う底板６４と、底板６４の外周縁部から上方に突出する周壁６６とを備えていたが、この態様に限定されるものではない。例えば、保持部材における底板は、プリント基板の下面の所定の領域を部分的に覆うようになっていてもよいし、周壁は設けられなくてもよい。 (3) In the first and second embodiments, the holding members 60 and 96 include the bottom plate 64 that covers the entire lower surface 63 of the printed circuit boards 58 and 94, and the peripheral wall 66 that projects upward from the outer peripheral edge of the bottom plate 64. However, it is not limited to this embodiment. For example, the bottom plate of the holding member may partially cover a predetermined area of the lower surface of the printed circuit board, or the peripheral wall may not be provided.
（４）前記実施形態では、電源用配電装置１０，８０，１１０，１７０が電池パック１２の筐体内に収容されていたが、本開示に係る電源用配電装置は、例えば電池パックの筐体を構成する筐体本体の近傍に設けられて、筐体を構成する蓋体により、筐体本体と共に電源用配電装置の上方が覆われるようになっていてもよい。 (4) In the embodiments described above, the power distribution devices 10, 80, 110, and 170 were housed in the casing of the battery pack 12, but the power distribution device according to the present disclosure includes, for example, the casing of the battery pack. A lid body that is provided near the casing body and forms the casing may cover the upper side of the power distribution device together with the casing body.
１０　電源用配電装置（実施形態１）
１２　電池パック（電源）
１３　ＰＣＵ（車両負荷）
１４　回路構成体
１６　ケース
１８　構成部品
２０　回路ユニット
２２ａ　（電池パックにおける正極側の）出力端子
２２ｂ　（電池パックにおける負極側の）出力端子
２４　メインリレー
２４ａ　（正極側の）メインリレー
２４ｂ　（負極側の）メインリレー
２５ａ　（ＰＣＵにおける正極側の）入力端子
２５ｂ　（ＰＣＵにおける負極側の）入力端子
２６　ＥＣＵ
２８　パイロヒューズ（アクティブヒューズ）
３０　電流センサ
３０ａ　第１電流センサ
３０ｂ　第２電流センサ
３２　プリチャージリレー
３４　プリチャージ抵抗
３６　ロアケース
３８　アッパケース
３９ａ　ロック爪部
３９ｂ　ロック枠体
４０　底壁部
４２　下周壁部
４４　ロアケース側組立体
４６　上底壁部
４８　上周壁部
４９　左方開口部
５０　アッパケース側組立体
５１　段差
５２　保持枠部
５３　支持部
５４　ロック突部（弾性係合部）
５６　開口部
５８　プリント基板
６０　保持部材
６１　上面（プリント基板の一方の面）
６２　基板コネクタ
６３　下面（プリント基板の他方の面）
６４　底板
６６　周壁
６８　ねじ穴
７０　切欠部
７２　凹部
７４　弾性ロック片
７６，７６ａ，７６ｂ，７６ｃ　コネクタ
７８　電線
８０　電源用配電装置（実施形態２）
８２　アッパケース側組立体
８４　アッパケース
８６　コネクタハウジング
８８　端子孔
９０　位置決め凹部
９２　回路ユニット
９４　プリント基板
９６　保持部材
９８　基板端子
１００　位置決め凸部
１１０　電源用配電装置（実施形態３）
１１２　回路ユニット
１１４　ケース
１１５　プリント基板
１１６　支持部
１１８　左面
１２０　右面
１２２　アッパケース
１２４　上方開口部
１２６　底部
１２８　周壁部
１３０　ねじ
１３２　ねじ孔
１３４　ねじ穴
１３６　貫通孔
１３８　アッパケース側組立体
１４０　アッパケース側組立体（実施形態４）
１４２　アッパケース
１４４　ロック突部（弾性係合部）
１４６　支持部
１４８　舌片収容部
１５０　係合爪部
１５２　回路ユニット
１５４　ガイド溝部
１５６　収容凹部
１５８　突条
１６０　弾性舌片
１６２　スリット
１６４　係合孔
１６６　外方突出部
１７０　電源用配電装置（実施形態５）
１７２　支持部
１７４　回路ユニット
１７６　下方開口部
１７７　プリント基板
１７８　アッパケース
１８０　アッパケース側組立体
１９０　アッパケース側組立体（実施形態６）
１９２　アッパケース
１９４　ロック突部（弾性係合部）
１９６　支持部
１９８　係合爪部
２００　回路ユニット 10 Power distribution device (Embodiment 1)
12 Battery pack (power supply)
13 PCU (vehicle load)
14 Circuit component 16 Case 18 Components 20 Circuit unit 22a (On the positive side of the battery pack) Output terminal 22b (On the negative side of the battery pack) Output terminal 24 Main relay 24a (On the positive side) Main relay 24b (On the negative side ) Main relay 25a (positive side of PCU) Input terminal 25b (negative side of PCU) Input terminal 26 ECU
28 Pyro fuse (active fuse)
30 Current sensor 30a First current sensor 30b Second current sensor 32 Precharge relay 34 Precharge resistor 36 Lower case 38 Upper case 39a Lock claw portion 39b Lock frame 40 Bottom wall portion 42 Lower peripheral wall portion 44 Lower case side assembly 46 Upper bottom Wall portion 48 Upper peripheral wall portion 49 Left opening 50 Upper case side assembly 51 Step 52 Holding frame portion 53 Support portion 54 Lock protrusion (elastic engagement portion)
56 Opening 58 Printed circuit board 60 Holding member 61 Top surface (one surface of printed circuit board)
62 Board connector 63 Bottom surface (other surface of printed circuit board)
64 Bottom plate 66 Peripheral wall 68 Screw hole 70 Notch 72 Recess 74 Elastic lock pieces 76, 76a, 76b, 76c Connector 78 Electric wire 80 Power distribution device (Embodiment 2)
82 Upper case side assembly 84 Upper case 86 Connector housing 88 Terminal hole 90 Positioning recess 92 Circuit unit 94 Printed circuit board 96 Holding member 98 Board terminal 100 Positioning protrusion 110 Power distribution device (third embodiment)
112 Circuit unit 114 Case 115 Printed circuit board 116 Support part 118 Left surface 120 Right surface 122 Upper case 124 Upper opening 126 Bottom 128 Peripheral wall 130 Screw 132 Screw hole 134 Screw hole 136 Through hole 138 Upper case side assembly 140 Upper case side assembly (Embodiment 4)
142 Upper case 144 Lock protrusion (elastic engagement part)
146 Support part 148 Tongue housing part 150 Engagement claw part 152 Circuit unit 154 Guide groove part 156 Accommodation recess 158 Projection 160 Elastic tongue piece 162 Slit 164 Engagement hole 166 Outward protrusion part 170 Power distribution device for power supply (Embodiment 5)
172 Support part 174 Circuit unit 176 Lower opening 177 Printed circuit board 178 Upper case 180 Upper case side assembly 190 Upper case side assembly (Embodiment 6)
192 Upper case 194 Lock protrusion (elastic engagement part)
196 Support part 198 Engagement claw part 200 Circuit unit

Claims (10)

  1. 　車両の走行駆動用の電源に接続される電源用配電装置であって、
    　電源からの電力を車両負荷に分配する回路構成体と、
    　前記回路構成体を収容するケースと、
    　前記回路構成体の少なくとも１つの構成部品に接続されて、前記構成部品の制御および監視の少なくとも一方を行う回路ユニットと、を備え、
    　前記回路ユニットは、前記制御および前記監視の少なくとも一方を実行可能な回路が実装されたプリント基板を有し、
    　前記プリント基板の少なくとも一方の面を覆って前記プリント基板を支持する支持部が前記ケースと一体的に形成されており、前記支持部の内部に前記プリント基板が配置されている、
    　電源用配電装置。     A power distribution device connected to a power source for driving a vehicle,
    a circuit component that distributes power from the power source to vehicle loads;
    a case accommodating the circuit structure;
    a circuit unit that is connected to at least one component of the circuit structure and controls and/or monitors the component;
    The circuit unit has a printed circuit board on which a circuit capable of performing at least one of the control and the monitoring is mounted,
    A support portion that covers at least one surface of the printed circuit board and supports the printed circuit board is formed integrally with the case, and the printed circuit board is disposed inside the support portion.
    Power distribution equipment.
  2. 　前記回路ユニットは、前記プリント基板と、前記プリント基板の他方の面を覆って前記プリント基板を保持する保持部材と、を有し、
    　前記保持部材が前記ケースに保持されて、前記プリント基板の前記一方の面が前記ケースにおける前記支持部により覆われている、請求項１に記載の電源用配電装置。     The circuit unit includes the printed circuit board and a holding member that covers the other surface of the printed circuit board and holds the printed circuit board,
    The power distribution device according to claim 1, wherein the holding member is held by the case, and the one surface of the printed circuit board is covered by the support portion in the case.
  3. 　前記プリント基板の両方の面が前記ケースにおける前記支持部により覆われている、請求項１に記載の電源用配電装置。 The power supply distribution device according to claim 1, wherein both surfaces of the printed circuit board are covered by the support portion in the case.
  4. 　前記回路構成体は、メインリレーと、前記メインリレーに直列に接続されたアクティブヒューズと、前記アクティブヒューズに流れる電流を検出する電流センサと、を含み、
    　前記回路ユニットは、前記アクティブヒューズと前記電流センサに接続され、前記電流センサの検出値が閾値を超えた場合に、前記アクティブヒューズを遮断状態にする、請求項１から請求項３のいずれか１項に記載の電源用配電装置。     The circuit component includes a main relay, an active fuse connected in series to the main relay, and a current sensor that detects a current flowing through the active fuse,
    Any one of claims 1 to 3, wherein the circuit unit is connected to the active fuse and the current sensor, and sets the active fuse to a cutoff state when a detected value of the current sensor exceeds a threshold value. Power distribution equipment as described in Section 1.
  5. 　前記回路ユニットは、前記ケースに設けられた弾性係合部と係合可能であり、
    　前記ケースの前記弾性係合部が前記回路ユニットに係合することにより、前記回路ユニットが前記ケースに保持されている、請求項１から請求項３のいずれか１項に記載の電源用配電装置。     The circuit unit is engageable with an elastic engagement part provided in the case,
    The power supply distribution device according to any one of claims 1 to 3, wherein the circuit unit is held in the case by the elastic engagement portion of the case engaging with the circuit unit. .
  6. 　前記回路ユニットの前記プリント基板は、前記構成部品に接続された電線端末に設けられたコネクタが装着可能な基板コネクタを備えている、請求項１から請求項３のいずれか１項に記載の電源用配電装置。 The power supply according to any one of claims 1 to 3, wherein the printed circuit board of the circuit unit includes a board connector to which a connector provided at an electric wire terminal connected to the component can be attached. power distribution equipment.
  7. 　前記回路ユニットの前記プリント基板は、前記構成部品に接続された電線端末に設けられたコネクタに接続される基板端子を有し、
    　前記ケースは、前記基板端子を収容して前記コネクタが装着可能なコネクタハウジングを有している、請求項１から請求項３のいずれか１項に記載の電源用配電装置。     The printed circuit board of the circuit unit has a board terminal connected to a connector provided on a wire terminal connected to the component,
    The power distribution device according to any one of claims 1 to 3, wherein the case has a connector housing that accommodates the board terminal and allows the connector to be attached.
  8. 　前記回路ユニットは、接続される前記構成部品の近傍において、前記ケースに保持されている、請求項１から請求項３のいずれか１項に記載の電源用配電装置。 The power distribution device according to any one of claims 1 to 3, wherein the circuit unit is held in the case in the vicinity of the component to be connected.
  9. 　前記ケースが、前記回路構成体の前記構成部品を収容して保持するロアケースと、前記ロアケースの開口を覆うアッパケースと、を含み、
    　前記アッパケースに前記回路ユニットが保持されており、前記構成部品から延びる電線が前記回路ユニットの前記プリント基板に接続されている、請求項１から請求項３のいずれか１項に記載の電源用配電装置。     The case includes a lower case that accommodates and holds the components of the circuit component, and an upper case that covers an opening of the lower case,
    The power supply according to any one of claims 1 to 3, wherein the circuit unit is held in the upper case, and electric wires extending from the component parts are connected to the printed circuit board of the circuit unit. Power distribution equipment.
  10. 　前記保持部材が、前記プリント基板の前記一方の面の全面を覆う大きさで広がる底板と、前記底板の周縁部から突出する周壁とを有し、前記底板に前記プリント基板が固定されている、請求項２に記載の電源用配電装置。 The holding member has a bottom plate wide enough to cover the entire surface of the one surface of the printed circuit board, and a peripheral wall protruding from a peripheral edge of the bottom plate, and the printed circuit board is fixed to the bottom plate. The power distribution device according to claim 2.
PCT/JP2023/012519 2022-04-20 2023-03-28 Power-supply electric power distributing device WO2023203976A1 (en)

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Application Number Priority Date Filing Date Title
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JP2022-069609 2022-04-20

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Citations (7)

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JP2008034263A (en) * 2006-07-28 2008-02-14 Sanyo Electric Co Ltd Battery pack
JP2009106075A (en) * 2007-10-23 2009-05-14 Aisin Aw Co Ltd Inverter unit
JP2010035347A (en) * 2008-07-29 2010-02-12 Hitachi Ltd Power conversion device and electric vehicle
JP2013128067A (en) * 2011-12-19 2013-06-27 Denso Corp Electronic apparatus
JP2018142661A (en) * 2017-02-28 2018-09-13 株式会社デンソー Electric power conversion system
JP2022014988A (en) * 2020-07-08 2022-01-21 株式会社オートネットワーク技術研究所 Distribution module
JP2022061801A (en) * 2020-10-07 2022-04-19 株式会社アイシン Vehicle driving system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008034263A (en) * 2006-07-28 2008-02-14 Sanyo Electric Co Ltd Battery pack
JP2009106075A (en) * 2007-10-23 2009-05-14 Aisin Aw Co Ltd Inverter unit
JP2010035347A (en) * 2008-07-29 2010-02-12 Hitachi Ltd Power conversion device and electric vehicle
JP2013128067A (en) * 2011-12-19 2013-06-27 Denso Corp Electronic apparatus
JP2018142661A (en) * 2017-02-28 2018-09-13 株式会社デンソー Electric power conversion system
JP2022014988A (en) * 2020-07-08 2022-01-21 株式会社オートネットワーク技術研究所 Distribution module
JP2022061801A (en) * 2020-10-07 2022-04-19 株式会社アイシン Vehicle driving system

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