JP5121295B2 - Power supply for vehicle - Google Patents

Description

  The present invention relates to a power supply device for a vehicle that is mounted on an electric vehicle such as a hybrid car or an electric vehicle and supplies electric power to a motor of the electric vehicle.

  The power supply device for a vehicle supplies electric power to a motor for traveling mounted on the vehicle and causes the vehicle to travel. In this power supply device, a large number of batteries are connected in series to increase the output voltage, and the power supplied to the traveling motor is increased. FIG. 1 is a circuit diagram of a power supply device for a vehicle. In the power supply device of this circuit diagram, a large number of batteries 91 are connected in series, and a main relay 93 is connected to outputs on the plus side and the minus side. The main relay 93 is turned off at the time of abnormality, and interrupts the current of the battery 91. The power supply device shown in FIG. 1 divides a battery 91 connected in series into a positive battery block 92A and a negative battery block 92B, and connects a service plug 94 between the battery blocks 92. Yes. The service plug 94 is turned off and the output voltage of the output terminal 95 is set to 0 V, so that safety during assembly and maintenance is improved. Further, the power supply apparatus shown in the figure has a precharge circuit 96 connected in parallel with the plus-side main relay 93A. The precharge circuit 96 is a series circuit of a precharge relay 96B and a precharge resistor 96A. The precharge relay 96B is turned on prior to turning on the main relay 93A on the plus side, and charges a large-capacity capacitor connected to the load of the power supply device. The precharge circuit 96 charges the capacitor while limiting the capacitor charging current with the precharge resistor 96A. After the capacitor is charged, the positive side main relay 93A is turned on. Since the power supply device charges the capacitor and switches the positive main relay 93A and the negative main relay 93B to ON, the contact point of the main relay 93 is not welded by an excessive charging current for charging the capacitor. .

As described in Patent Document 1, the vehicle power supply device shown in the circuit diagram of FIG. 1 has a battery disposed in the battery housing portion and a control component disposed in the electrical component housing portion.
JP 2002-190288 A

  The power supply device disclosed in Patent Document 1 arranges control components in a component storage case. Furthermore, the main relay and the electrical components of the precharge circuit fixed to the component storage case are wired using bus bars made of a thick and wide metal plate because a large current of 100 A or more flows. This bus bar is pressed into a three-dimensional shape that exactly matches the connection terminal by pressing a thick metal plate in order to connect to the connection terminal of the electrical component fixed to the component storage case. . This power supply device is assembled by fixing an electrical component to the component storage case, and then connecting a bus bar that is three-dimensionally pressed to the electrical component by a method such as screwing. In addition to the time-consuming processing of the bus bar, the power supply device with this structure secures each electrical component to the component storage case, and then connects the bus bar that has been processed into a solid shape to the connection terminal of each electrical component. Therefore, there is a drawback that it takes time to assemble. Furthermore, there is a drawback that maintenance of a failed electrical component is extremely time-consuming. This is because it is necessary to detach the bus bar in order to detach the electrical component.

  The present invention has been developed for the purpose of solving such drawbacks of a conventional power supply device for vehicles. An important object of the present invention is to provide a vehicle power supply apparatus that can simplify the entire structure including the bus bar, assembly, and maintenance.

The vehicle power supply device of the present invention has the following configuration in order to achieve the above-described object.
The power supply device for a vehicle stores a battery storage unit 2 that stores a plurality of batteries 1, and an electrical component 3 that is connected to the battery 1 of the battery storage unit 2, and a bus bar 4 is connected to the electrical component 3. It has the electrical component storage part 5 formed by connection. The electrical component storage unit 5 includes a base plate 6 made of an insulating material, the bus bar 4 made of a metal plate is disposed on the back surface of the base plate 6, and the electrical component 3 is disposed on the back surface of the base plate 6. The connection terminal 33 is connected to the bus bar 4.

  The power supply device for a vehicle according to claim 2 of the present invention is provided with a fitting portion 8 for arranging the bus bar 4 at a fixed position on the back surface of the base plate 6. Further, the power supply device for a vehicle according to claim 3 of the present invention is such that the base plate 6 is made of plastic, and the fitting portion 8 of the bus bar 4 is provided by the fitting concave portion 10 formed by molding the base plate 6. The bus bar 4 is placed in the landing recess 10 and is disposed at a fixed position. Furthermore, in the power supply device for a vehicle according to claim 4 of the present invention, the fitting portion 8 of the bus bar 4 has a fixing hook 12 for fixing the bus bar 4 in a fixed position, and the bus bar 4 is fixed in position by the fixing hook 12. Is arranged.

  The power supply device for a vehicle according to claim 5 of the present invention includes a wire harness 9 connected to the electrical component 3, and the base plate 6 is made of plastic, and a passage 14 for arranging the wire harness 9 in a fixed position is formed in the base plate 6. Provided.

  In the power supply device for a vehicle according to claim 6 of the present invention, the component holder 7 having the partition wall 21 for arranging the electrical component 3 at a fixed position is connected to the back surface side of the base plate 6. The electrical component 3 is disposed therein, and the component holder 7 is connected to the base plate 6. Furthermore, in the vehicle power supply device according to claim 7 of the present invention, the component holder 7 has an opening 22 into which the electrical component 3 is inserted, and the lid 23 is connected to the opening 22 to connect the electrical component 3. It arrange | positions in the partition 21. FIG. Furthermore, in the power supply device for a vehicle according to claim 8 of the present invention, the lid body 23 includes the cushion material 25 that elastically presses the electrical component 3. Furthermore, the power supply device for a vehicle according to claim 9 of the present invention connects the component holder 7 and the base plate 6 with a locking structure.

The power supply device for a vehicle according to the present invention is characterized in that the entire structure including the bus bar, assembly and maintenance can be simplified. That is because the electrical component storage portion of the power supply device of the present invention has a bus bar disposed on the back surface of the base plate which is an insulating material, and further electrical components are disposed on this bus bar so that the electrical components are connected to the bus bar. It is.
Furthermore, the power supply device according to the present invention is characterized in that the bus bar and the electrical components are disposed on the back surface of the base plate made of an insulating material, so that the bus bar can be insulated from the base plate.

  Further, in the power supply device according to claim 2 of the present invention, in addition to the configuration of claim 1, a fitting portion for arranging the bus bar at a fixed position is provided on the back surface of the base plate. Can be placed in place.

  According to a third aspect of the present invention, in addition to the configuration of the second aspect, the base plate is made of plastic, and in the step of molding the plastic, the fitting recess is provided in the base plate to provide the fitting portion of the bus bar. ing. According to this structure, the bus bar can be put in the fitting recess provided in the molding process and disposed at a fixed position. Furthermore, the power supply device according to claim 4 of the present invention is characterized in that since the fixing portion for fixing the bus bar to the fixed position is provided in the fitting portion of the bus bar, the bus bar can be arranged at the fixed position so as not to come off.

  Further, the power supply device according to claim 5 of the present invention has a wire harness connected to the electrical component in addition to the configuration of claim 1, and a passage for arranging the wire harness at a fixed position is formed on a plastic base plate. Provided. According to this structure, the wire harness can be put in the passage and wired in a fixed position so that it is not easily displaced.

  Furthermore, in the power supply device according to claim 6 of the present invention, in addition to the configuration of claim 1, a component holder having a partition wall for arranging electrical components at a fixed position is connected to the back surface side of the base plate. An electrical component is disposed in the partition wall of the component holder, and the component holder is connected to the base plate. In the power supply device having this structure, the electrical component can be arranged at a fixed position by the component holder. According to a seventh aspect of the present invention, an opening for inserting an electrical component is provided in the component holder, a lid is connected to the opening, and the electrical component is disposed in the partition wall. With this structure, the electrical components can be easily detached individually by opening the lid. Furthermore, the power supply device according to claim 8 of the present invention is provided with a cushion member on the lid body that elastically presses the electrical component. In this power supply device, the dimensional error of the base plate, the component holder, and the lid can be absorbed by the cushion material, and the electric component can be fixed without clearance. In addition, the cushion material can absorb the noise of the electrical component and reduce the noise level. This structure realizes a feature that an electrical component that generates an impact sound when being turned on and off, such as a main relay, can be placed at a fixed position while reducing the noise level. Furthermore, since the power supply device of Claim 9 of this invention has connected the component holder and the baseplate with the latching structure, both can be connected easily.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies a vehicle power supply device for embodying the technical idea of the present invention, and the present invention does not specify the vehicle power supply device as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The power supply device of the present invention is mounted on a hybrid car or an electric vehicle and supplies power to a motor that runs the vehicle. FIG. 2 is a perspective view showing the entire power supply apparatus. This power supply device stores a battery storage unit 2 storing a plurality of batteries, an electrical component connected to a battery of the battery storage unit 2, and an electrical component storage in which a bus bar is connected to the electrical component. Part 5.

  As shown in the circuit diagram of FIG. 3, the power supply device includes a plurality of batteries 1 connected in series, a main relay 30 connected to the positive and negative output sides of these batteries 1, and a positive main relay. 30 is provided with a precharge circuit 31 connected in parallel with 30 and a current sensor 32 for detecting a current flowing through the battery 1. In this power supply device, the battery 1 is housed in the battery housing portion 2, and the main relay 30, the precharge circuit 31, and the current sensor 32 are housed in the electrical component housing portion 5.

  The battery storage unit 2 stores a plurality of batteries 1. The battery storage unit 2 in FIG. 2 includes a plurality of holder cases 40. The holder case 40 shown in the figure stores three batteries side by side in the vertical direction. A plurality of holder cases 40 are arranged in the horizontal direction to form a battery storage unit 2 that stores a large number of batteries. Each holder case 40 stores a battery in a state of a battery module. The battery module is formed by connecting a plurality of unit cells in series and connecting them in a straight line. In the battery module, a plurality of unit cells are linearly connected in series. In the battery module, for example, four unit cells are linearly connected. However, the battery module can connect three or less unit cells, or five or more unit cells. The unit cell is a rechargeable battery such as a nickel metal hydride battery or a lithium ion secondary battery. The plurality of battery modules housed in each holder case 40 are connected in series with each other by a bus bar (not shown). However, the battery module in the holder case can be connected in series and in parallel.

  Furthermore, the battery storage unit 2 fixes end plates 41 positioned on both end surfaces of the battery module to the holder case 40. The end plate 41 is formed of an insulating material such as plastic and connects bus bars (not shown) fixed to electrode terminals provided at both ends of the battery module at a fixed position. The bus bar is a metal plate that connects adjacent battery modules in series. The end plate 41 is fixed to a fixed position of the holder case 40 by screwing the bus bar and fixed to the battery module.

  The electrical component storage unit 5 is provided adjacent to the battery storage unit 2. FIG. 4 is a perspective view of the electrical component storage unit 5, and FIG. 5 is an exploded perspective view thereof. The electrical component storage unit 5 shown in these drawings includes a base plate 6, a bus bar 4 fixed to the back surface of the base plate 6, an electrical component 3 disposed on the back surface of the base plate 6, and the electrical component 3. And a component holder 7 arranged at the position.

  The base plate 6 is produced by molding plastic which is an insulating material. 6 is a perspective view of the base plate 6 as viewed from the back, and FIG. 7 is an exploded perspective view of the base plate 6. The base plate 6 shown in these figures is provided with a fitting portion 8 for arranging the bus bar 4 at a fixed position on the back surface. The plastic base plate 6 is provided with a fitting recess 10 during molding to serve as a fitting portion 8 of the bus bar 4. The base plate 6 shown in FIGS. 6 and 7 is provided with a peripheral wall 11 along the outer peripheral edge of the bus bar 4, and is provided with a fitting recess 10 inside the peripheral wall 11. The bus bar 4 is put in the fitting recess 10 and is arranged at a fixed position.

  Further, the base plate 6 shown in the figure is provided with a fixing hook 12 for fixing the bus bar 4 at a fixed position on the fitting portion 8 of the bus bar 4. The illustrated base plate 6 is provided with a pair of fixing hooks 12 on both sides in the middle of the bus bar 4. In the base plate 6 of FIG. 7, slits 13 are provided on the peripheral wall 11 provided along the outer peripheral edge of the bus bar 4, and a space between the slits 13 is used as a fixed hook 12. The fixing hook 12 is formed in a hook shape with the tip protruding inward, and is fixed so as not to come out of the bus bar 4. The fixing hook 12 is elastically deformed to insert the bus bar 4 into the fitting recess 10. In a state where the bus bar 4 is inserted into the fitting recess 10, the bus bar 4 is clamped from both sides and fixed so as not to come off. The base plate 6 having this structure can be fixed so that the bus bar 4 is inserted into the fitting recess 10 so as not to come off. For this reason, the bus bar 4 can be easily and easily fixed at a fixed position of the base plate 6 quickly.

  Further, the base plate 6 shown in FIGS. 4 and 5 is provided with a passage 14 formed on the surface of the base plate 6 in which the wire harness 9 connected to the electrical component 3 is disposed at a fixed position. The wire harness 9 shown in FIGS. 4 and 5 includes a lead wire 9A for connecting the electrical component housing 5 to a battery ECU (not shown) that is a control circuit for the battery 1, and a precharge resistor 31A for the precharge circuit 31. Is a lead wire 9B connecting the bus bar 4 to the precharge relay 31B. The base plate 6 shown in the figure has a recess 15 formed on the surface thereof to provide a passage 14 for the wire harness 9, and a pair of protrusions 16 are provided close to each other, and the passage 14 of the wire harness 9 is provided between the protrusions 16. It is said. The wire harness 9 is placed in the passage 14 and wired at a fixed position of the base plate 6. The wire harness 9 has a ring-shaped connection terminal 17 connected to the tip, and is connected to the bus bar 4 by screwing the connection terminal 17. The base plate 6 can be wired in a fixed position by putting the wire harness 9 in the passage 14. In addition, the base plate 6 can be reliably wired in an insulated state by arranging the wire harness 9 in the passage 14.

  Furthermore, the base plate 6 shown in FIGS. 4 to 7 connects the precharge resistor 31 </ b> A that is a part of the electrical component 3 and the current sensor 32. The precharge resistor 31 </ b> A generates heat due to the Joule heat of the current that charges the capacitor. The base plate 6 shown in the figure is provided with an insertion recess 18 opened on the upper surface. In the opening of the insertion recess 18, a retaining hook 19 for the precharge resistor 31 </ b> A to be inserted therein is integrally formed. In the illustrated base plate 6, the opening of the insertion recess 18 has a rectangular shape, and a retaining hook 19 is provided on each of the three rectangular pieces. The retaining hook 19 is elastically deformed inward so as to be locked so as not to come out of the precharge resistor 31 </ b> A inserted in the insertion recess 18. The retaining hook 19 is elastically deformed and expanded when the precharge resistor 31 </ b> A is inserted into the insertion recess 18. With this structure, the electrical component 3 such as the precharge resistor 31A can be easily arranged at a fixed position on the base plate 6. Furthermore, since the insertion recess 18 is opened upward, the electrical component 3 such as the precharge resistor 31A inserted therein can be efficiently radiated. The precharge resistor 31A has a lead wire 9B wired in the passage 14 provided on the surface of the base plate 6, and the connection terminal 17 at the tip thereof is connected to the bus bar 4 and the precharge relay 31B.

  Further, the current sensor 32 is also connected to the back surface of the base plate 6 of FIG. As shown in the exploded perspective view of FIG. 7, the base plate 6 is provided with a connecting hook 20 that protrudes from the back surface for connecting the current sensor 32 to a fixed position. The current sensor 32 has a connecting piece 32B protruding on both sides of the main body 32A, and a through hole 32b into which the connecting hook 20 is inserted is opened in the connecting piece 32B. The base plate 6 of FIG. 7 connects the current sensor 32 by inserting a pair of connecting hooks 20 into the through holes 32b of the connecting piece 32B. The pair of connection hooks 20 are formed in a hook shape with tips opposite to each other and protruding outward, and connected so as not to come out of the connection piece 32a. The pair of connecting hooks 20 are elastically deformed and inserted into the through holes 32b of the connecting piece 32B. In a state where the connecting hook 20 is inserted into the through hole 32b, the hook at the tip engages the connecting piece 32B and connects so as not to come off. The base plate 6 having this structure can be fixed so that the connecting hook 20 is not inserted into the through hole 32b of the connecting piece 32B. For this reason, the current sensor 32 can be connected and fixed to a fixed position of the base plate 6 simply and easily and quickly. However, the current sensor can be fixed to the back surface of the base plate by screwing the main body. Further, the current sensor 32 shown in the figure includes a detection hole 32a through which the bus bar 4 is inserted in the main body portion 32A. The current sensor 32 detects a current by detecting magnetism generated by a current flowing through the bus bar 4 arranged in a state of penetrating the detection hole 32a. However, a current sensor having a structure having an output terminal protruding from the main body can also be used. This current sensor is connected to the bus bar by screwing the output terminal.

  The bus bar 4 wired on the back surface of the base plate 6 is made of a metal plate having a predetermined thickness as shown in FIG. The bus bar 4 fixed to the back surface of the base plate 6 can be mass-produced at low cost by cutting a metal plate into a predetermined width and length without bending into a three-dimensional shape as in the prior art. The bus bar 4 is provided with a connection ring 4B by processing an end portion or an intermediate portion connected to the electrical component 3 into a ring shape. In the bus bar 4, the outer diameter of the connection ring 4B is made wider than the width of the band part 4A on the way. In the base plate 6, the shape of the fitting recess 10 is such that the bus bar 4 with the connection ring 4B can be fitted. In this structure, the connecting ring 4B at the end of the bus bar can be inserted into the fitting recess 10 of the base plate 6 and disposed at a fixed position on the back surface of the base plate 6 while preventing the bus bar 4 from being displaced in the axial direction. The bus bar 4 is electrically connected to the electrical component 3 via a set screw 35 inserted through the through hole of the connection ring 4B. The set screw 35 passes through the connection ring 4 </ b> B of the bus bar 4 and is screwed into a female screw hole that is the connection terminal 33 of the electrical component 3, thereby fixing the bus bar 4 to the electrical component 3.

  Furthermore, the bus bar 4 shown in FIG. 7 is provided with a fixing ring 4C in the middle or end. The outer diameter of the fixing ring 4C is also larger than the width of the intermediate band portion 4A. The fixing ring 4C has a set screw 35 inserted through a central through hole. The set screw 35 passes through the base plate 6 and the bus bar 4 and is screwed into a nut 36 inserted in the hexagonal recess 37 of the component holder 7. With this structure, the bus bar 4 can be securely fixed to the base plate 6 via the set screw 35 and the nut 36.

  The main relay 30 and the precharge relay 31 </ b> B that are the electrical components 3 are arranged at fixed positions via the component holder 7. The component holder 7 is connected to the back side of the base plate 6 to place the electrical component 3 at a fixed position. The component holder 7 has a partition wall 21 in which the main relay 30 and the precharge relay 31B, which are the electrical components 3, are arranged at fixed positions. The component holder 7 is produced by molding plastic. The main relay 30 and the precharge relay 31 </ b> B of the electrical component 3 are placed in the partition wall 21, and the component holder 7 is connected to the base plate 6.

  FIG. 8 is a perspective view of the component holder 7 as viewed from below. The component holder 7 is provided with an opening 22 on the bottom surface into which the main relay 30 and the precharge relay 31B of the electrical component 3 are inserted. The main relay 30 and the precharge relay 31B are inserted into the partition wall 21 through the opening 22 and arranged at fixed positions. A lid 23 is connected to the opening 22. The lid 23 closes the opening 22 at the bottom after the main relay 30 and the precharge relay 31B of the electrical component 3 are arranged in the partition wall 21. The lid 23 is connected to the component holder 7 by an elastic hook 24 provided in the opening 22 at the bottom of the partition wall 21. The component holder 7 shown in the figure is provided with a pair of elastic hooks 24 facing each other, and connects the lid 23 to the component holder 7. The elastic hook 24 is elastically expanded when the electrical component 3 and the lid body 23 are inserted inside the partition wall 21, and after the electrical component 3 is inserted inside the partition wall 21 and the lid body 23 is inserted, The lid 23 is elastically locked and fixed so as not to come off. In this structure, the main relay 30 and the precharge relay 31B of the electrical component 3 can be placed inside the partition wall 21, and then the lid 23 can be placed and fixed with the elastic hook 24 so that the electrical component 3 cannot be removed. For this reason, even if the electrical component 3 and the lid 23 are simplified, they can be fixed in place.

  Further, the lid body 23 includes a cushion material 25 that elastically presses the electrical component 3. The cushion material 25 is a rubber-like elastic body such as rubber, soft plastic, or soft plastic foam, and elastically presses the electrical component 3 while the lid 23 is fixed. The lid body 23 shown in the figure is entirely formed of a rubber-like elastic body, and the whole is cushioned 25 and elastically presses the electrical component 3. However, the lid can also be disposed inside the lid, with the cushioning material as a separate member. Since the lid 23 of the cushioning material 25 elastically presses the electrical component 3, even if there is a dimensional error in the member that places the electrical component 3 in a fixed position, the dimensional error is absorbed by the cushion material 25, The electrical component 3 can be arranged at a fixed position without play. For this reason, the noise generated by the vibration of the electrical component 3 can be reduced. Further, the vibration level of the electrical component 3 can be absorbed by the cushion material 25 to reduce the noise level generated by the electrical component 3.

  The above component holder 7 connects the electrical component 3 to the component holder 7 via the lid 23. However, the component holder is provided with a connection hook on the partition without providing the lid, and the electrical component is connected via this connection hook. It is also possible to connect the parts to the part holder so as not to come off. The connecting hook expands when the electric component is put inside the partition wall, and after the electric component is inserted, the connecting hook is locked so as not to come out like the elastic hook.

  The component holder 7 and the base plate 6 shown in FIGS. 4 and 5 are connected to a fixed position by a locking structure. In order to connect with the locking structure, the base plate 6 is integrally formed with a locking projection 26 protruding toward the component holder 7 on the outer periphery thereof. The locking projection 26 is provided with a locking hole 26A inside. The locking projection 27 that is locked in the locking hole 26 </ b> A is provided at the upper edge of the component holder 7. Further, the component holder 7 is provided with a recess 28 for guiding the locking projection 26 at the upper end edge, and a locking projection 27 is provided in the recess 28. In this structure, the base plate 6 can be connected to the component holder 7 by inserting the locking projection 26 of the base plate 6 into the recess 28 of the component holder 7. For this reason, the locking protrusion 26 does not protrude from the surface of the component holder 7 in the connected state.

The above power supply apparatus is assembled in the following steps.
(1) The bus bar 4 is connected to the back surface of the base plate 6 in a state where the base plate 6 and the component holder 7 are separated. The bus bar 4 is connected by being inserted into a fitting recess 10 provided on the back surface of the base plate 6. In this state, the bus bar 4 is connected by the fixing hook 12 so as not to come off.
(2) The current sensor 32 as the electrical component 3 is connected to the back surface of the base plate 6. The current sensor 32 is connected to the base plate 6 in a state where the bus bar 4 passes through the detection hole 32a of the main body 32A. The current sensor 32 is fixed to the base plate 6 in a locked state by inserting the connection hooks 20 protruding from the back surface of the base plate 6 into the through holes 32b of the connection pieces 32B protruding from both sides of the main body 32A. Further, the precharge resistor 31 </ b> A of the electrical component 3 is connected to the base plate 6. The precharge resistor 31 </ b> A is inserted into the insertion recess 18 from the opening on the surface of the base plate 6, and is connected so as not to be removed by the retaining hook 19.
(3) The component holder 7 is connected to the back surface of the base plate 6. The base plate 6 and the component holder 7 are connected by putting the locking projection 26 of the base plate 6 into the recess 28 of the component holder 7.
(4) The main relay 30 and the precharge relay 31 </ b> B that are the electrical components 3 are placed inside the partition wall 21 of the component holder 7, and the opening 22 is closed with the lid 23.
(5) The wire harness 9 is inserted into the passage 14 on the surface of the base plate 6, and a set screw 35 is screwed from the surface of the base plate 6 to connect the wire harness 9, the bus bar 4, and the electrical component 3. The set screw 35 passes through the connection terminal 17 of the wire harness 9 and the bus bar 4 and is screwed into the nut 36 on the back surface of the bus bar 4 or is screwed into the female screw hole which is the connection terminal 33 of the electrical component 3 and fixed. .

It is a circuit diagram of the conventional power supply device for vehicles. It is a perspective view of the power supply device for vehicles concerning one example of the present invention. It is a circuit diagram of the power supply device for vehicles shown in FIG. FIG. 3 is a perspective view of an electrical component storage portion of the vehicle power supply device shown in FIG. 2. It is a disassembled perspective view of the electrical component storage part shown in FIG. It is the perspective view which looked at the base plate shown in FIG. 5 from the back. FIG. 7 is an exploded perspective view of the base plate shown in FIG. 6. It is the disassembled perspective view which looked at the component holder shown in FIG. 4 from the bottom face.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Battery 2 ... Battery storage part 3 ... Electrical equipment part 4 ... Bus bar 4A ... Band part
4B ... Connection ring
4C ... Fixing ring 5 ... Electrical component storage unit 6 ... Base plate 7 ... Component holder 8 ... Fitting portion 9 ... Wire harness 9A ... Lead wire
9B ... Lead wire 10 ... Insertion recess 11 ... Peripheral wall 12 ... Fixed hook 13 ... Slit 14 ... Passage 15 ... Recess 16 ... Projection 17 ... Connection terminal 18 ... Insertion recess 19 ... Retaining hook 20 ... Connecting hook 21 ... Septum 22 ... Opening 23 ... Cover 24 ... Elastic hook 25 ... Cushion material 26 ... Locking protrusion 26A ... Locking hole 27 ... Locking protrusion 28 ... Recess 30 ... Main relay 31 ... Precharge circuit 31A ... Precharge resistance
31B ... Precharge relay 32 ... Current sensor 32A ... Main body
32a ... Detection hole
32B ... Connection piece
32b ... through hole 33 ... connection terminal 35 ... set screw 36 ... nut 37 ... hexagonal recess 40 ... holder case 41 ... end plate 91 ... battery 92 ... battery block 92A ... plus battery block
92B ... Negative battery block 93 ... Main relay 93A ... Positive main relay
93B ... negative main relay 94 ... service plug 95 ... output terminal 96 ... precharge circuit 96A ... precharge resistor
96B ... Precharge Relay

Claims (9)

A battery housing part (2) configured to store a plurality of batteries (1) and an electrical component (3) connected to the battery (1) of the battery storage unit (2) are stored, and an electrical component (3 A power supply device for a vehicle having an electrical component storage section (5) formed by connecting a bus bar (4) to
The electrical component storage section (5) includes a base plate (6) made of an insulating material, a bus bar (4) made of a metal plate is disposed on the back surface of the base plate (6), and an electrical component is mounted on the back surface of the base plate (6). (3) is arranged, and the connection terminal (33) of the electrical component (3) is connected to the bus bar (4).   The power supply device for a vehicle according to claim 1, wherein a fitting portion (8) for arranging the bus bar (4) at a fixed position is provided on a back surface of the base plate (6).   The base plate (6) is made of plastic, and a fitting recess (10) formed by molding the base plate (6) is provided with a fitting portion (8) of the bus bar (4), and this fitting recess (10) The vehicle power supply device according to claim 2, wherein the bus bar (4) is placed in a fixed position.   The fitting portion (8) of the bus bar (4) has a fixing hook (12) for fixing the bus bar (4) in a fixed position, and the bus bar (4) is arranged in a fixed position by the fixing hook (12). A power supply device for a vehicle according to claim 2 or 3.   A wire harness (9) connected to the electrical component (3) is provided, and the base plate (6) is made of plastic, and a passage (14) for arranging the wire harness (9) in a fixed position is formed in the base plate (6). The power supply device for vehicles according to claim 1 provided.   A component holder (7) having a partition wall (21) for disposing the electrical component (3) at a fixed position is connected to the back side of the base plate (6), and the interior of the partition wall (21) of the component holder (7) The vehicle power supply device according to claim 1, wherein an electrical component (3) is disposed on the component holder (7) and the component holder (7) is connected to the base plate (6).   The component holder (7) has an opening (22) for inserting the electrical component (3), and a lid (23) is connected to the opening (22) to connect the electrical component (3) to the partition wall (21 The vehicle power supply device according to claim 6, which is disposed inside the bracket.   The power supply device for a vehicle according to claim 7, wherein the lid (23) includes a cushion material (25) that elastically presses the electrical component (3).   The power supply device for a vehicle according to claim 8, wherein the component holder (7) and the base plate (6) are connected by a locking structure.

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