JP2015130259A - Relay and junction block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress upsizing of a resistor due to processing of heat generated therein.SOLUTION: A relay including two conductive main fixed terminals each having a main fixed contact, a main conductive movable contact having two main movable contacts corresponding to the main fixed contacts, a member for main drive switching between a state where each main movable contact coming into contact with a corresponding main fixed contact, and a state not coming into contact, by moving the main movable contact, and a first container for supporting two main fixed contacts, is further provided with a first resistor for limit resistor formed on the outer surface of the first container or embedded therein, and connected electrically with one of the two main fixed contacts, i.e., the first main fixed contact.

Description

  The present invention relates to a relay and a junction block.

  For example, in an electric power system used for a hybrid vehicle or an electric vehicle, the DC power source (storage battery) and a motor (and a power converter) are switched between an on state in which the DC power source (storage battery) and the motor (and power converter) are electrically connected and an off state in which the DC power source is not connected. , A relay (hereinafter also referred to as “main relay”) is used. As such a relay, for example, two conductive fixed terminals each having a fixed contact, a conductive movable contact having two movable contacts corresponding to each fixed contact, and a movable contact are moved. A structure including a driving member that switches between an on state in which each movable contact is in contact with a corresponding fixed contact and an off state in which it is not in contact, and a container that supports two fixed terminals is used. The relay is also called a contactor or a relay.

  In the above power system, when it is assumed that the load fluctuation of the motor is large, a smoothing capacitor is often provided in parallel with the motor. In a power system provided with a smoothing capacitor, when the ignition switch of an automobile is switched to the on state, a very large current is generated to charge the smoothing capacitor, causing problems such as damage to the contact of the relay. In order to prevent this, a technique using a precharge relay including a resistor for limiting resistance is known (see, for example, Patent Document 1). For example, a precharge relay is placed in parallel with the positive main relay, and when the ignition switch is turned on, the precharge relay is turned on while the positive main relay is kept off. And the smoothing capacitor is charged (precharged) via the limiting resistor. Thereby, the magnitude | size of the charging current of a smoothing capacitor can be suppressed, and generation | occurrence | production of the said malfunction can be prevented. When the charging of the smoothing capacitor is completed, the positive main relay is switched on and the precharge relay is switched off, and the DC power supply and the motor are conducted through the positive main relay.

JP 2008-178164 A JP 2011-142067 A

  In the above-described conventional technique, the heat treatment (heat extraction) generated in the resistor during the precharging of the smoothing capacitor has not been considered much. Therefore, it is necessary to take measures such as increasing the wire diameter of the resistor or increasing the wire length in order to suppress the temperature rise of the element. As a result, there existed a subject that a resistor tends to enlarge. Further, in the above conventional technique, the resistor is fixed to the movable contact of the precharge relay. As a result, the weight of the movable contact increases, causing malfunctions due to external impacts (for example, contact between contacts when it should be turned off, or contact between the contacts when it should be turned on) There is a problem that the possibility of occurrence of a malfunction such as a malfunction that occurs) increases. Further, the movable contact is required to be lightweight. For this reason, it is difficult to increase the heat capacity of the movable contact, and also in this respect, there is a problem that it is difficult to treat the heat generated in the resistor. Moreover, in the said prior art, a resistor is provided as a different body from each structural member of the main relay and the precharge relay. For this reason, for example, a bus bar for connecting each part electrically as well as increasing the number of assembling steps, increasing the size of the device and increasing the cost when assembling resistors and relays to junction blocks (also called junction boxes or junction boards). In addition, there is a problem in that the number of wirings increases and the apparatus becomes complicated.

  The present invention has been made to solve the above-described problems, and can be realized as the following forms.

(1) According to one aspect of the present invention, conductive main movable contacts each having two conductive main fixed terminals each having a main fixed contact and two main movable contacts respectively corresponding to the main fixed contacts. A main drive member that moves the main movable contact to switch between a state in which each main movable contact is in contact with a corresponding main fixed contact and a state in which it is not in contact with each other, and supports the two main fixed terminals And a relay comprising a first container. The relay is formed on the outer surface of the first container or embedded in the first container itself, and is electrically connected to the first main fixed terminal which is one of the two main fixed terminals. The first resistor for limiting resistance is provided. According to the relay in this form, the first resistor for limiting resistance is formed on the outer surface of the first container of the relay or embedded in the first container itself. Therefore, when the current flows through the first resistor, the heat generated from the first resistor can be effectively transferred to the first container having a relatively large heat capacity. Therefore, it is not necessary to take measures such as increasing the wire diameter of the first resistor or increasing the wire length in order to suppress the temperature rise, and downsizing of the first resistor can be realized. Further, according to the relay of this embodiment, since the first resistor is provided integrally with the relay, the man-hours for assembling to the junction block as compared with the case where the first resistor is provided separately from the relay. In addition to realizing a reduction in the size of the apparatus, downsizing of the apparatus, and cost reduction, the apparatus configuration can be simplified by reducing the number of bus bars and wires for electrically connecting the components.

(2) In the relay according to the above aspect, two conductive sub-fixed terminals supported by the first container and having sub-fixed contacts, respectively, and two sub-movable contacts respectively corresponding to the sub-fixed contacts And a sub-driving member for switching between a state in which each sub-movable contact is in contact with the corresponding sub-fixed contact and a state in which it is not in contact with each other by moving the sub-movable contact. A first sub-fixing terminal that is one of the two sub-fixing terminals is electrically connected to the first main fixing terminal via the first resistor, and The second sub fixed terminal which is the other may be electrically connected to the second main fixed terminal which is the other of the two main fixed terminals. According to the relay of this form, a relay having a main fixed contact and a main movable contact and another relay having a sub fixed contact and a sub movable contact can be integrated. Therefore, it is possible to further reduce the number of steps for assembling to the junction block, further reduce the size of the device, and reduce the cost, and further reduce the wiring and further simplify the device configuration.

(3) The relay of the above aspect further includes a second resistor for limiting resistance formed on the outer surface of the first container or embedded in the first container itself, The second sub-fixed terminal may be electrically connected to the second main fixed terminal via the second resistor. According to the relay of this form, the resistor which is a heating element can be distributed and arranged on the outer surface or inside of the first container, and more effective heat extraction from the resistor can be realized. .

(4) In the relay of the above aspect, the distance between the first main fixed terminal and the first sub fixed terminal is between the first main fixed terminal and the second sub fixed terminal. It may be longer than the distance. According to the relay of this form, the length of the resistor can be easily increased on the outer surface or the inside of the first container, and more effective heat extraction from the resistor can be realized.

(5) In the relay according to the above aspect, the resistor may be in the form of a film. According to the relay of this form, the device can be further miniaturized while suppressing the thickness of the resistor.

  The present invention can be realized in various modes, for example, a relay, a method for manufacturing the relay, a junction block that houses the relay, and a moving body such as a vehicle or a ship that includes the junction block that houses the relay. It can implement | achieve in the aspect of these.

It is explanatory drawing which shows roughly the structure of the electric power system 1 in 1st Embodiment of this invention. 4 is an explanatory diagram showing operation timing of the power system 1. FIG. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in the modification of 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in the modification of 1st Embodiment. It is explanatory drawing which shows the structure of the relay 100 in the modification of 1st Embodiment. It is explanatory drawing which shows roughly the structure of the electric power system 1a in 2nd Embodiment of this invention. It is explanatory drawing which shows the structure of the relay 100a in 2nd Embodiment. It is explanatory drawing which shows the structure of the relay 100a in the modification of 2nd Embodiment.

A. First embodiment:
A-1. Power system configuration:
FIG. 1 is an explanatory diagram schematically showing the configuration of a power system (electric circuit) 1 according to the first embodiment of the present invention. The power system 1 is mounted on a vehicle such as a hybrid vehicle or an electric vehicle. The power system 1 includes a storage battery 2 as a DC power source, a motor 4 that drives a driving wheel of a vehicle, and a power conversion device 3 that is interposed between the storage battery 2 and the motor 4. The power conversion device 3 functions as an inverter and a converter. When power for driving is supplied from the storage battery 2 to the motor 4 (when the storage battery 2 is discharged), three-phase AC power converted by the power conversion device 3 is supplied to the motor 4. Further, when the storage battery 2 is charged with the energy regenerated by the motor 4, the DC power converted by the power converter 3 is stored in the storage battery 2.

  The power system 1 also includes a smoothing capacitor 9 for dealing with a large load fluctuation of the motor 4. The smoothing capacitor 9 is connected to the storage battery 2 in parallel with the motor 4 (and the power conversion device 3, the same applies hereinafter).

  The electric power system 1 also includes two relays (main relays) for switching between an on state in which the storage battery 2 and the motor 4 are electrically connected and an off state in which the storage battery 2 and the motor 4 are not connected. The positive main relay 5 that is one of the two main relays is disposed between the positive terminal of the storage battery 2 and the motor 4, and the negative main relay 8 that is the other is connected to the negative terminal of the storage battery 2. It is arranged between the motor 4.

  The power system 1 further includes a precharge relay 6, which is a relay different from the plus side main relay 5 and the minus side main relay 8, and two resistors 7 (first circuits) connected in series to the precharge relay 6. 1 resistor 7W and second resistor 7X). A set of the first resistor 7W, the precharge relay 6 and the second resistor 7X connected in series is connected in parallel to the positive main relay 5 with respect to the storage battery 2, and the precharge of the smoothing capacitor 9 is performed. A precharge path is configured for In the following description, the first resistor 7 </ b> W and the second resistor 7 </ b> X are simply referred to as the resistor 7 when it is not necessary to distinguish between them.

  In the present embodiment, as will be described later, the plus-side main relay 5, the precharge relay 6, and the two resistors 7 are configured as an integrated device. In the present embodiment, this integrated device is called a relay 100. The relay 100 (the positive side main relay 5, the precharge relay 6, the two resistors 7) and the negative side main relay 8 are accommodated in one junction block 130.

  FIG. 2 is an explanatory diagram showing the operation timing of the power system 1. When the ignition switch of the vehicle is in the off state (at time t0 in FIG. 2), the precharge relay 6, the positive main relay 5, and the negative main relay 8 are all in the off state (circuit disconnected state). Yes, the voltage of the smoothing capacitor 9 is zero. When the ignition switch is switched to the on state at timing t1, the minus side main relay 8 shifts to the on state (circuit connection state), and at the subsequent timing t2, the precharge relay 6 also shifts to the on state. In this state, the smoothing capacitor 9 is charged (precharged) by the storage battery 2 through an electrical path that passes through the negative main relay 8 and the precharge relay 6. Since the first resistor 7 </ b> W and the second resistor 7 </ b> X are present on this electrical path, it is possible to prevent the current during charging from being excessive and to prevent occurrence of problems such as damage to the contact of the relay. The Thereafter, when the charging of the smoothing capacitor 9 is completed at the timing t3, the plus-side main relay 5 is turned on, and at the subsequent timing t4, the precharge relay 6 is turned off. After this state is reached, control of the power converter 3 and the motor 4 is started.

A-2. Configuration of relay 100:
A-2-1. Overall configuration of relay 100:
3 to 8 are explanatory views showing the configuration of the relay 100 in the first embodiment. 3 is a front view of the relay 100, FIG. 4 is a perspective view of the relay 100, FIG. 5 is a cross-sectional view of the relay 100, and FIG. 6 is a cross-sectional perspective view of the relay 100. 7 is an enlarged cross-sectional view of a portion of the relay 100 (a portion surrounded by a broken line in FIG. 5), and FIG. 8 is a partial plan view of the relay 100. Each drawing shows XYZ axes orthogonal to each other in order to specify the direction. Hereinafter, for convenience, the Z-axis positive direction (the direction in which a movable contact 58 of the movable contact 50 described later approaches the fixed contact 18 of the fixed terminal 10) is referred to as an upward direction, and the negative Z-axis direction is referred to as a downward direction. Depending on the installation posture of the relay 100, the direction corresponding to each axis may change. In FIGS. 5-7, the plus side main relay 5 and the precharge relay 6 are both in the OFF state. In FIG. 6, illustration of a part of the configuration of the precharge relay 6 is omitted.

  As shown in FIGS. 3 and 4, the relay 100 includes a plus-side main relay 5, a precharge relay 6, and a resistor 7. The relay 100 is accommodated in a case (not shown).

A-2-2. Configuration of the plus side main relay 5:
As shown in FIGS. 5 and 6, the plus-side main relay 5 includes a pair of fixed terminals 10 arranged along the Y-axis direction, a movable contact 50 provided below the fixed terminal 10, and a movable contact 50. Is provided with a drive mechanism 90 that moves the container up and down along the Z-axis direction, and a container 92 that forms an airtight space 99 inside. Hereinafter, of the pair of fixed terminals 10, the fixed terminal 10 on the side where current flows when electric power is supplied from the storage battery 2 (see FIG. 1) to the motor 4 is referred to as a first fixed terminal 10 </ b> W. The outflow side is referred to as a second fixed terminal 10X. When it is not necessary to distinguish the first fixed terminal 10W and the second fixed terminal 10X, they are simply referred to as the fixed terminal 10.

  The fixed terminal 10 is a substantially cylindrical member centering on an axis parallel to the Y axis, and is formed of a conductive material (for example, a metal material including copper). The fixed terminal 10 is fixed through the fixed contact portion 19 disposed in the airtight space 99, the flange portion 13 disposed outside the airtight space 99, and a through hole 22 formed in the first container 20 described later. The main body part 14 which connects the contact part 19 and the flange part 13 is provided. As shown in FIGS. 3 and 4, a bus bar 140 is connected to each fixed terminal 10.

  The fixed contact portion 19 of the fixed terminal 10 has a fixed contact 18 that comes into contact with the movable contact 50 when the movable contact 50 moves upward. The fixed contact portion 19 may be formed of the same material as other portions of the fixed terminal 10, or is formed of a material having higher heat resistance (for example, tungsten) in order to more effectively suppress damage caused by the arc. Also good.

  The flange portion 13 of the fixed terminal 10 has a larger diameter than the main body portion 14, and the connection port 12 for connecting the bus bar 140 and the wiring is formed. The flange portion 13 has a diaphragm portion 17 that is airtightly joined to the first container 20. The diaphragm portion 17 is formed so as to surround the main body portion 14, and is joined to the first container 20 by, for example, brazing. Diaphragm part 17 relieves the stress of the joined portion caused by the difference in thermal expansion due to the difference in material between fixed terminal 10 and first container 20. The diaphragm portion 17 may be a member integrated with other portions of the fixed terminal 10 or may be a separate member. Moreover, the diaphragm part 17 may be formed with the same material as the other site | part of the fixed terminal 10, and may be formed with another material (for example, alloys, such as Kovar).

  The container 92 includes a first container 20 that supports the fixed terminal 10, a bonding member 30 that is bonded to the lower end of the first container 20, a base member 32 that is bonded to the bonding member 30, and a base member 32. And an iron core container 80 joined.

  The first container 20 is a box-shaped member that is open on one side, and is formed of an insulating material (for example, ceramic such as alumina or zirconia). More specifically, the first container 20 includes a substantially rectangular plate-like upper bottom portion 21 that is substantially orthogonal to the Z-axis direction, and a cylindrical side surface portion 23 that extends downward from the outer edge of the upper bottom portion 21. . The side (namely, lower side) facing the upper bottom part 21 in the 1st container 20 is opening. Two through holes 22 into which the two fixed terminals 10 are inserted are formed in the side surface portion 23. Further, the joining member 30 is joined to the lower end portion of the side surface portion 23.

  The joining member 30 is a substantially annular member having openings at the lower end portion and the upper end portion, and is formed of a metal material composed of a low thermal expansion material such as Kovar or 42-alloy. The upper end portion of the joining member 30 is airtightly joined to the lower end portion of the side surface portion 23 of the first container 20 by, for example, brazing, and the lower end portion of the joining member 30 is airtightly joined to the base member 32 by, for example, laser welding. Yes.

  The base member 32 is a substantially flat plate-shaped member that is substantially orthogonal to the Z-axis, and is formed of a metal magnetic material such as iron. The iron core container 80 is a cylindrical member having a bottom at the lower end and an opening at the upper end, and is formed of a nonmagnetic material. The iron core container 80 is disposed in a through hole inside the coil bobbin 42. The upper end portion of the iron core container 80 is airtightly joined to the base member 32 by laser welding or the like.

  As described above, the above-described members (the fixed terminal 10, the first container 20, the joining member 30, the base member 32, and the iron core container 80) are joined to each other in an airtight manner, so that the inside of the plus-side main relay 5 is provided. The airtight space 99 in which the fixed contact portion 19 (fixed contact 18) of the fixed terminal 10 and the movable contact 50 are accommodated is formed. In the airtight space 99, for example, hydrogen or a gas mainly composed of hydrogen is at atmospheric pressure or higher in order to suppress the heat generation of the fixed contact portion 19 and the movable contact 50 due to the generation of arc and to improve the arc extinguishing performance. (For example, 2 atm). That is, after the above-described members are joined, the inside of the airtight space 99 is evacuated through a ventilation pipe (not shown) that connects the inside and the outside of the airtight space 99, and then the inside of the airtight space 99 through the ventilation pipe. Gas such as hydrogen is sealed until a predetermined pressure is reached. After the gas such as hydrogen is sealed at a predetermined pressure, the ventilation pipe is crimped so that the gas such as hydrogen does not leak out from the airtight space 99.

  The movable contact 50 is a substantially flat plate-like member, and is formed of a conductive material (for example, a metal material containing copper). The movable contact 50 is disposed inside the first container 20 (in the airtight space 99). The movable contact 50 has two movable contacts 58 that come into contact with the fixed contacts 18 of the two fixed terminals 10W and 10X, respectively, when the movable contact 50 moves upward.

  The plus side main relay 5 further includes a first spring 62. The first spring 62 is a coil spring, and biases the movable contact 50 in a direction (upward) approaching the fixed terminal 10. One end of the first spring 62 is in contact with the lower surface of the movable contact 50 and the other end is in contact with an attachment mechanism 110 described later. Note that the first spring 62 may be arranged in a compressed state or in an uncompressed state (free length) when the drive mechanism 90 is not operating.

  The drive mechanism 90 switches between an on state in which the fixed contact 18 and the movable contact 58 are in contact with an off state in which the fixed contact 18 and the movable contact 58 are not in contact by moving the movable contact 50 up and down along the Z-axis direction. The drive mechanism 90 includes the rod 60, the base member 32, the fixed iron core 70, the movable iron core 72, the iron core container 80, the coil 44, the coil bobbin 42, the coil container 40, and the second spring 64. Have

  The coil 44 is wound around a hollow cylindrical resin coil bobbin 42. The coil container 40 is a magnetic body, and is formed of a metal magnetic material such as iron, for example. The coil container 40 has a concave shape and surrounds the coil 44 to pass magnetic flux. The coil container 40 forms a magnetic circuit together with the base member 32, the fixed iron core 70, the movable iron core 72, and the guide portion 82. The guide part 82 is a magnetic body and is formed of a metal magnetic material such as iron, for example. The guide portion 82 is disposed between the lower portion of the iron core container 80 and the coil container 40 and surrounds the lower portion of the iron core container 80. By providing the guide portion 82, the magnetic force generated when the coil 44 is energized can be efficiently transmitted to the movable iron core 72.

  The fixed iron core 70 has a substantially cylindrical shape and is accommodated in the iron core container 80. The upper end of the fixed iron core 70 is joined to the base member 32 by laser welding or the like. The movable iron core 72 has a substantially cylindrical shape. By energizing the coil 44, the movable iron core 72 is attracted to the fixed iron core 70 and moves upward.

  The rod 60 is a nonmagnetic material and has a restricting portion 60b provided at the upper end. A lower end portion of the rod 60 is fixed to the movable iron core 72. The rod 60 is inserted through the movable contact 50. When the driving mechanism 90 is in an off state (a state in which no current flows through the coil 44), the restricting portion 60b contacts the upper surface of the movable contact 50 so that the movable contact 50 is biased by the urging force of the first spring 62. The movement toward the fixed terminal 10 is restricted. An attachment mechanism 110 for arranging the first spring 62 is arranged on the rod 60. The attachment mechanism 110 includes an E-type retaining ring 104 fixed to the rod 60 and a pedestal portion 102 disposed on the E-type retaining ring 104. The E-type retaining ring 104 is fixed to the rod 60 by being fitted in a groove formed on the outer periphery of the rod 60. The second spring 64 is a coil spring. One end of the second spring 64 is in contact with the movable iron core 72, and the other end is in contact with the fixed iron core 70. The second spring 64 biases the movable core 72 in a direction (Z-axis negative direction, downward direction) in which the movable core 72 is separated from the fixed core 70.

  In addition, the fixed terminal 10, the fixed contact 18, the movable contact 50, the movable contact 58, the drive mechanism 90, and the first container 20 of the plus side main relay 5 are respectively the main fixed terminal, the main fixed contact, and the main container 20 in the claims. It corresponds to a movable contact, a main movable contact, a main drive member, and a first container.

  Next, the operation of the plus side main relay 5 will be described. When the coil 44 is energized, the movable iron core 72 is attracted to the fixed iron core 70. Accordingly, the movable iron core 72 approaches the fixed iron core 70 against the urging force of the second spring 64 and comes into contact with the fixed iron core 70. When the movable iron core 72 moves upward, the rod 60 fixed to the movable iron core 72 also moves upward, the restriction by the restriction portion 60b of the rod 60 is released, and the movable contact 58 of the movable contact 50 corresponds. The fixed contact 18 is contacted.

  In a state where both the contacts 18 and 58 are in contact, the first spring 62 is compressed by a predetermined amount. As a result, the pressure applied by the movable contact 58 to the fixed contact 18 can be increased by the biasing force of the first spring 62. When the movable contact 58 comes into contact with the fixed contact 18, a current I flows from one fixed terminal 10 to the other fixed terminal 10 via the movable contact 50 as shown in FIG. 5. This electrical path is called R1.

  On the other hand, when the energization of the coil 44 is interrupted, the movable iron core 72 moves downward so as to be separated from the fixed iron core 70 mainly by the urging force of the second spring 64. As a result, the movable contact 50 is also moved downward (in the direction away from the fixed contact 18) by being pushed by the restricting portion 60b of the rod 60. As each movable contact 58 is separated from each fixed contact 18, the electrical connection between the two fixed terminals 10 is interrupted.

  As shown in FIGS. 3 and 4, the plus-side main relay 5 includes a pair of permanent magnets 120. The pair of permanent magnets 120 are provided on each of the pair of outer surfaces facing each other along the X-axis direction in the side surface portion 23 of the first container 20. The pair of permanent magnets 120 applies a Lorentz force to the arc generated between the contacts 18 and 58 to stretch the arc and promote arc extinction.

A-2-3. Configuration of precharge relay 6:
The configuration of the precharge relay 6 is the same as the configuration of the positive main relay 5 described above. That is, as shown in FIGS. 5 to 7, the precharge relay 6 includes a pair of fixed terminals 610, a movable contact 650, and a drive mechanism 690 that moves the movable contact 650 up and down along the Z-axis direction. With. In the same way as when the drive mechanism 90 moves the movable contact 50 up and down in the plus side main relay 5, the drive mechanism 690 of the precharge relay 6 moves the movable contact 650 up and down to fix it. In the ON state of the precharge relay 6 in which the ON state in which the fixed contact 618 of the terminal 610 and the movable contact 658 of the movable contact 650 are in contact with each other and the OFF state in which the contact is not performed are switched, one fixed terminal 610 and the other The fixed terminal 610 is electrically connected via the movable contact 650. FIG. 8 shows the positional relationship between the pair of fixed terminals 610 and the movable contact 650 as viewed from above.

  In the present embodiment, the pair of fixed terminals 610 of the precharge relay 6 are joined to the outer surface of the upper bottom portion 21 of the first container 20 of the plus side main relay 5 by, for example, brazing. The pair of fixed terminals 610 are arranged side by side in the Y-axis direction. Of the pair of fixed terminals 610, the fixed terminal 610 on the side close to the second fixed terminal 10X of the plus side main relay 5 is referred to as a first fixed terminal 610W, and is connected to the first fixed terminal 10W of the plus side main relay 5 The fixed terminal 610 on the near side is referred to as a second fixed terminal 610X. That is, the distance between the first fixed terminal 10W of the plus side main relay 5 and the first fixed terminal 610W of the precharge relay 6 is equal to the first fixed terminal 10W of the plus side main relay 5 and the precharging. It is longer than the distance between the second fixed terminal 610 </ b> X of the relay 6. Further, the distance between the second fixed terminal 10X of the plus side main relay 5 and the second fixed terminal 610X of the precharge relay 6 is the same as the distance between the second fixed terminal 10X of the plus side main relay 5 and the precharging relay. It is longer than the distance between the first fixed terminal 610 </ b> W of the relay 6.

  In addition, the fixed terminal 610, the fixed contact 618, the movable contact 650, the movable contact 658, and the drive mechanism 690 of the precharge relay 6 are respectively the sub fixed terminal, the sub fixed contact, the sub movable contact, and the sub movable in the claims. It corresponds to a contact and a sub driving member.

A-2-4. The structure of the resistor 7:
As shown in FIGS. 3 to 8, the resistor 7 (the first resistor 7 </ b> W and the second resistor 7 </ b> X) is formed on the outer surface of the first container 20 of the plus side main relay 5. In this embodiment, since the resistor 7 is formed by screen printing, it has a film shape. The film shape means that the ratio of thickness to width is 1/5 or less. The width of the resistor 7 means the dimension of the resistor 7 along the direction parallel to the surface on which the resistor 7 is formed (the outer surface of the first container 20). Means the dimension of the resistor 7 along the direction perpendicular to the surface on which the resistor 7 is formed.

  The first resistor 7 </ b> W has a shape that extends from the outer surface of the side part 23 on the side of the first container 20 that supports the first fixed terminal 10 </ b> W to the outer surface of the upper bottom part 21 of the first container 20. is there. One end of the first resistor 7 </ b> W is electrically connected to the first fixed terminal 10 </ b> W of the plus-side main relay 5, and the other end of the first resistor 7 </ b> W is connected to the precharge relay 6. It is electrically connected to the first fixed terminal 610W. Note that the end of the resistor 7 may be constituted by a resistor body or a lead wire. Further, that the resistor 7 is electrically connected to the fixed terminals 10 and 610 does not necessarily require that the resistor 7 is in contact with the fixed terminals 10 and 610 itself. For example, when the diaphragm portion 17 of the fixed terminal 10 of the plus-side main relay 5 is brazed to the first container 20, it resists the plating layer formed on the metallized surface of the first container 20. If the body 7 is in contact, it can be said that the resistor 7 is electrically connected to the fixed terminal 10. The same applies to the fixed terminal 610 of the precharge relay 6.

  On the other hand, the second resistor 7 </ b> X extends from the outer surface of the side part 23 on the side supporting the second fixed terminal 10 </ b> X in the first container 20 to the outer surface of the upper bottom part 21 of the first container 20. Shape. One end of the second resistor 7X is electrically connected to the second fixed terminal 10X of the plus-side main relay 5, and the other end of the second resistor 7X is connected to the precharge relay 6. The second fixed terminal 610X is electrically connected.

  As described above, the first fixed terminal 610W of the precharge relay 6 is provided on the side close to the second fixed terminal 10X of the plus-side main relay 5, and the second fixed terminal of the precharge relay 6 is provided. The terminal 610X is provided on the positive main relay 5 on the side close to the first fixed terminal 10W. Therefore, as shown in FIG. 8, the first resistor 7 </ b> W avoids the second fixed terminal 610 </ b> X from the end of the surface of the upper bottom portion 21 of the first container 20 to the minus side in the X direction. The second resistor 7X has a shape that reaches the first fixed terminal 610W, and the second resistor 7X is connected to the first fixed terminal 610W from the end of the upper bottom 21 of the first container 20 in the X direction plus. The shape is such that it reaches the second fixed terminal 610X so as to avoid the side.

A-2-5. About precharge route:
When the precharge relay 6 is turned on when the fixed contact 618 of the fixed terminal 610 and the movable contact 658 of the movable contact 650 are in contact with each other, as shown in FIG. 7, the first fixed terminal of the plus-side main relay 5 is used. In order from 10 W, the first resistor 7 W, the first fixed terminal 610 W of the precharge relay 6, the movable contact 650 of the precharge relay 6, the second fixed terminal 610 X of the precharge relay 6, the second The current I flows through an electrical path (precharge path) R2 that reaches the second fixed terminal 10X of the plus-side main relay 5 via the resistor 7X. On the other hand, when the precharge relay 6 is turned off, the precharge path is interrupted.

A-2-6. Effects of the first embodiment:
In the relay 100 of the present embodiment, the two resistors 7 for limiting resistance are formed on the outer surface of the first container 20 of the plus side main relay 5, so that resistance is generated when current flows through the precharge path. Heat can be effectively removed by allowing the heat generated from the body 7 to escape to the first container 20 having a relatively large heat capacity. Since the first container 20 does not move like a movable contact, there is little demand for weight reduction and it is relatively easy to increase the heat capacity. For this reason, it is not necessary to take measures such as increasing the wire diameter of the resistor 7 or increasing the wire length in order to suppress the temperature rise of the element, and the resistor 7 can be downsized. Moreover, in the relay 100 of this embodiment, since the resistor 7 is not fixed to the movable contact 650 of the precharge relay 6, the movable contact 650 can be reduced in weight, and due to an external impact. The possibility of occurrence of malfunctions such as malfunctions can be suppressed. Moreover, in the relay 100 of this embodiment, since the resistor 7 is provided integrally with the plus side main relay 5, the junction block is compared with the case where the resistor 7 is provided separately from the plus side main relay 5. It is possible to reduce the number of assembly steps to 130, reduce the size of the device, and reduce the cost, and reduce the number of bus bars and wirings for electrically connecting each component, thereby realizing a simplified device configuration.

  Further, in the relay 100 of the present embodiment, the two fixed terminals 610 of the precharge relay 6 are formed on the outer surface of the first container 20 of the plus side main relay 5, and movable contact is made at a position facing the fixed terminal 610. By arranging the child 650 and the drive mechanism 690, the plus-side main relay 5 and the precharge relay 6 (with the resistor 7) are integrated, so that the number of assembling steps to the junction block 130 can be further reduced and the apparatus Further downsizing and cost reduction can be realized, and wiring can be further reduced to further simplify the device configuration.

  In the relay 100 of the present embodiment, the first resistor 7W is provided between the first fixed terminal 10W of the plus-side main relay 5 and the first fixed terminal 610W of the precharge relay 6, A second resistor 7 </ b> X is provided between the second fixed terminal 10 </ b> X of the plus side main relay 5 and the second fixed terminal 610 </ b> X of the precharge relay 6. Therefore, compared with the case where a resistor is provided only in one of them, the resistor 7 as a heating element can be distributed and arranged on the outer surface of the first container 20. Effective heat sinking can be realized.

  In the relay 100 of the present embodiment, the distance between the first fixed terminal 10W of the positive main relay 5 and the first fixed terminal 610W of the precharge relay 6 is the first distance of the positive main relay 5. Longer than the distance between the fixed terminal 10W of the precharge relay 6 and the second fixed terminal 610X of the precharge relay 6, and the second fixed terminal 10X of the positive main relay 5 and the second fixed terminal 610X of the precharge relay 6 Is longer than the distance between the second fixed terminal 10 </ b> X of the positive main relay 5 and the first fixed terminal 610 </ b> W of the precharge relay 6. Therefore, on the outer surface of the first container 20, the lengths of the first resistor 7 </ b> W and the second resistor 7 </ b> X can be easily increased, and more effective heat extraction from the resistor 7 is realized. can do.

  Moreover, in the relay 100 of this embodiment, since the resistor 7 can be formed into a film by forming the resistor 7 by screen printing, as compared with a case where another resistor such as a cement resistor is employed. The device can be further miniaturized by suppressing the thickness of the resistor 7.

A-2-7. Modification of the first embodiment:
FIG. 9 thru | or FIG. 11 is explanatory drawing which shows the structure of the relay 100 in the modification of 1st Embodiment. 9 is a perspective view of the relay 100, FIG. 10 is a cross-sectional view of the plus-side main relay 5 constituting the relay 100, and FIG. 11 is a partial plan view of the relay 100.

  The relay 100 in the modification of 1st Embodiment differs in the structure of the positive side main relay 5 from 1st Embodiment mentioned above. Specifically, in the modification of the first embodiment, the through hole 22 is formed in the upper bottom portion 21 instead of the side surface portion 23 of the first container 20 of the plus side main relay 5, and the pair of fixed terminals 10 are The first container 20 is supported in a state of being inserted into a through hole 22 formed in the upper bottom portion 21 of the first container 20.

  In addition, about the other structure and operation | movement of the plus side main relay 5, it is the same as that of 1st Embodiment mentioned above. That is, when the coil 44 is energized, the movable iron core 72 is attracted to the fixed iron core 70, approaches the fixed iron core 70 against the urging force of the second spring 64, and comes into contact with the fixed iron core 70. Along with this, the rod 60 fixed to the movable iron core 72 also moves upward, the restriction by the restricting portion 60b of the rod 60 is released, and the movable contact 58 of the movable contact 50 corresponds to the fixed contact 18 of the fixed terminal 10 corresponding thereto. Contact with. In this way, the plus side main relay 5 is turned on. On the other hand, when the energization of the coil 44 is interrupted, the movable iron core 72 moves downward so as to be separated from the fixed iron core 70 mainly by the urging force of the second spring 64 and is pushed by the restricting portion 60b of the rod 60. Thus, the movable contact 50 also moves away from the fixed contact 18, and the electrical connection between the two fixed terminals 10 is interrupted. In this way, the positive side main relay 5 is turned off.

  Moreover, the relay 100 in the modification of 1st Embodiment differs in the positional relationship of the plus side main relay 5 and the precharge relay 6 from 1st Embodiment mentioned above. Specifically, in the modification of the first embodiment, the pair of fixed terminals 610 of the precharge relay 6 is not one of the upper bottom portion 21 of the first container 20 of the plus side main relay 5 but one of the side surface portions 23. It is formed on the outer surface (surface in the positive direction of the X axis). Further, the other part of the precharge relay 6 is arranged at a position where the movable contact 650 can approach the fixed terminal 610 or move away from the fixed terminal 610 along the X-axis direction.

  Moreover, the relay 100 in the modification of 1st Embodiment differs in the structure of the resistor 7 from 1st Embodiment mentioned above. Specifically, in the modification of the first embodiment, the first resistor 7 </ b> W is not formed with the fixed terminal 610 of the precharge relay 6 from the outer surface of the upper bottom portion 21 of the first container 20. The shape extends through the outer surface of the side surface portion 23 on the side to the outer surface of the side surface portion 23 on the side where the fixed terminal 610 is formed. One end of the first resistor 7 </ b> W is electrically connected to the first fixed terminal 10 </ b> W of the plus-side main relay 5, and the other end of the first resistor 7 </ b> W is connected to the precharge relay 6. It is electrically connected to the first fixed terminal 610W. Similarly, the second resistor 7X passes from the outer surface of the upper bottom portion 21 of the first container 20 to the outer surface of the side surface portion 23 on the side where the fixed terminal 610 of the precharge relay 6 is not formed. This is a shape that extends to the outer surface of the side surface portion 23 on the side where the fixed terminal 610 is formed. One end of the second resistor 7X is electrically connected to the second fixed terminal 10X of the plus-side main relay 5, and the other end of the second resistor 7X is connected to the precharge relay 6. The second fixed terminal 610X is electrically connected. As shown in FIGS. 9 and 11, the first resistor 7W and the second resistor 7X have a meandering shape on the outer surface of the side portion 23 on the side where the fixed terminal 610 is formed. It has become.

  In the relay 100 according to the modification of the first embodiment, as in the first embodiment described above, when the precharge relay 6 is turned on, the first fixed terminal 10W of the plus-side main relay 5 starts from the first fixed terminal 10W in order. Through the first fixed terminal 610W of the precharge relay 6, the movable contact 650 of the precharge relay 6, the second fixed terminal 610X of the precharge relay 6, and the second resistor 7X. Then, a current flows through the electrical path (precharge path) to the second fixed terminal 10X of the plus side main relay 5. On the other hand, when the precharge relay 6 is turned off, the precharge path is interrupted.

  In the relay 100 according to the modification of the first embodiment, the limiting resistor 7 is formed on the outer surface of the first container 20 of the positive main relay 5 as in the first embodiment. Therefore, it is possible to reduce the size of the resistor 7. Moreover, since the resistor 7 is not fixed to the movable contact 650 of the precharge relay 6, the movable contact 650 can be reduced in weight. In addition, since the resistor 7 is provided integrally with the plus-side main relay 5, it is possible to reduce the number of assembling steps to the junction block 130, to reduce the size of the device, and to reduce the cost, and to electrically connect each component. This simplifies the device configuration by reducing the number of bus bars and wiring. In addition, since the plus side main relay 5 and the precharge relay 6 (with the resistor 7) are integrated, it is possible to realize further reduction in man-hours for assembling to the junction block 130, further downsizing of the apparatus, and cost reduction. In addition, it is possible to further reduce the wiring and further simplify the device configuration. In addition, a first resistor 7W is provided between the first fixed terminal 10W of the plus side main relay 5 and the first fixed terminal 610W of the precharge relay 6, and the second side of the plus side main relay 5 Since the second resistor 7X is provided between the fixed terminal 10X and the second fixed terminal 610X of the precharge relay 6, the resistor 7 as a heating element is dispersed on the outer surface of the first container 20. Therefore, more effective heat extraction from the resistor 7 can be realized. Further, by forming the resistor 7 by screen printing, the resistor 7 can be formed into a film shape, and the thickness of the resistor 7 can be suppressed and the device can be further miniaturized. In addition, by forming at least a part of the resistor 7 in a meandering shape, the length of the resistor 7 can be increased, and more effective heat extraction from the resistor 7 can be realized.

B. Second embodiment:
FIG. 12 is an explanatory diagram schematically showing the configuration of the power system 1a in the second embodiment of the present invention. In the power system 1a in the second embodiment, the plus-side main relay 5 and the resistor 7 are configured as an integrated device (the relay 100a), but the precharge relay 6 is configured separately from the relay 100a. The point that the resistor 7 is provided only on one side (the positive terminal side of the storage battery 2), not on both sides of the precharge relay 6, is the power system 1 of the first embodiment shown in FIG. Different. Other configurations of the power system 1a in the second embodiment are the same as those in the first embodiment.

  FIG. 13 is an explanatory diagram (perspective view) showing the configuration of the relay 100a in the second embodiment. The configuration of the plus-side main relay 5 included in the relay 100a in the second embodiment is the same as that in the first embodiment. That is, the pair of fixed terminals 10 of the plus side main relay 5 is supported by the side surface portion 23 of the first container 20. The configuration of the precharge relay 6 in the second embodiment is such that the pair of fixed terminals 610 are not formed on the first container 20 of the plus side main relay 5 but are independent from the plus side main relay 5. Except for the configuration described above, the second embodiment is the same as the first embodiment. Therefore, the description of the configuration of the precharge relay 6 is omitted.

  In the relay 100a according to the second embodiment, the precharge terminal 150 is joined to the outer surface of the upper bottom portion 21 of the first container 20 of the plus side main relay 5 by, for example, brazing. The precharge terminal 150 is electrically connected to the first fixed terminal 610W (see FIG. 4) of the precharge relay 6. Moreover, in the relay 100a in 2nd Embodiment, the resistor 7 is the upper bottom part 21 of the 1st container 20 from the outer surface of the side part 23 by the side which supports the 1st fixed terminal 10W in the 1st container 20. It is the shape extended | stretched over the outer surface. One end of the resistor 7 is electrically connected to the first fixed terminal 10 </ b> W, and the other end of the resistor 7 is electrically connected to the precharge terminal 150. The resistor 7 has a meandering planar shape on the outer surface of the upper base 21.

  In the relay 100a of the second embodiment shown in FIGS. 12 and 13, the first fixed terminal 10W of the positive main relay 5 is electrically connected to the precharging terminal 150 through the resistor 7. When the precharge relay 6 is turned on in the power system 1a, a current flows through an electrical path (precharge path) passing through the resistor 7 and the precharge relay 6. On the other hand, when the precharge relay 6 is turned off, the precharge path is interrupted.

  In the relay 100a of the second embodiment, the resistor 7 for limiting resistance is formed on the outer surface of the first container 20 of the plus side main relay 5, as in the first embodiment described above. 7 downsizing can be realized. Moreover, since the resistor 7 is not fixed to the movable contact 650 of the precharge relay 6, the movable contact 650 can be reduced in weight. In addition, since the resistor 7 is provided integrally with the plus-side main relay 5, it is possible to reduce the number of assembling steps to the junction block 130, to reduce the size of the device, and to reduce the cost, and to electrically connect each component. This simplifies the device configuration by reducing the number of bus bars and wiring. In addition, by forming at least a part of the resistor 7 in a meandering shape, the length of the resistor 7 can be increased, and more effective heat extraction from the resistor 7 can be realized. Further, by forming the resistor 7 by screen printing, the resistor 7 can be formed into a film shape, and the thickness of the resistor 7 can be suppressed and the device can be further miniaturized.

B-1. Modification of the second embodiment:
FIG. 14 is an explanatory diagram illustrating a configuration of the relay 100a according to a modification of the second embodiment. The relay 100a in the modification of 2nd Embodiment differs in the structure of the terminal 150 for precharge from 2nd Embodiment mentioned above. Specifically, in the modification of the second embodiment, the precharging terminal 150 has a crank shape (a cross section having a substantially Z shape) having a bent portion 152. In addition, a groove 26 is formed in the side surface portion 23 of the first container 20 of the plus side main relay 5, and a part (end portion) of the precharge terminal 150 is accommodated in the groove 26 in the first state. It is joined to one container 20 by, for example, brazing. In the relay 100a according to the modified example of the second embodiment, one end of the resistor 7 is electrically connected to the first fixed terminal 10W as in the second embodiment described above. The end is electrically connected to the precharge terminal 150.

  In the relay 100a according to the modified example of the second embodiment, the precharge terminal 150 and the first charge terminal 150 are arranged in a state where a part of the precharge terminal 150 is accommodated in the groove 26 formed in the side surface portion 23 of the first container 20. Since one container 20 is joined, a strong joint between the precharge terminal 150 and the first container 20 can be easily realized. Further, since the precharge terminal 150 has the bent portion 152, the influence of the external force can be reduced when an external force is applied to the precharge terminal 150 as in the case where the precharge terminal 150 is connected to the connector. it can. In addition, since the relay 100a in the modification of 2nd Embodiment has the structure similar to the relay 100a of 2nd Embodiment, there exists an effect similar to the effect of 2nd Embodiment mentioned above.

C. Other variations:
Note that the present invention is not limited to the above-described embodiment, and can be realized in various forms without departing from the gist thereof. For example, the present invention can be realized as the following modifications.

C1. Modification 1:
In the said embodiment, the structure of the electric power system 1 in which the relay 100 is used is an example to the last, and can be variously deformed. For example, the power system 1 may further include a fuse. Moreover, in the said embodiment, although the relay 100 is used for the electric power system 1 mounted in a hybrid vehicle or an electric vehicle, the relay 100 can be used also for other uses (for example, for solar power generation devices). .

C2. Modification 2:
The configuration of the relay 100 in the above embodiment is merely an example, and various modifications can be made. For example, in each of the above embodiments, the resistor 7 is formed on the outer surface of the first container 20, but the resistor 7 may be embedded inside the first container 20 itself. For example, after forming the resistor 7 on the outer surface of the member formed in the shape of the first container 20 using an insulating material, the resistor 7 is coated on the outer surface of the resistor 7 with glass or resin. Can be realized by being embedded in the first container 20 itself. In this case, it can be said that the combination of the member formed of the insulating material and the coating corresponds to the first container 20. Alternatively, the resistor 7 may be embedded in the first container 20 itself formed using an insulating material. Even if the resistor 7 is embedded in the first container 20 itself, heat can be effectively removed from the resistor 7 and the resistor 7 can be integrated with the plus-side main relay 5. The same effects as in the above embodiments are achieved.

  Moreover, the 1st container 20 does not need to be formed with the single material, and may be formed with multiple materials. For example, the first container 20 includes a first member formed of a ceramic material and a second member formed of an insulating material other than the ceramic material and joined to the outside of the first member. It is good. In such a case, the outer surface of the first container 20 means the outer surface when the first member and the second member are viewed as an integral part.

  Further, the first container 20 is not necessarily formed of an insulating material. For example, in the first container 20 of the relay 100 shown in FIG. 9, the upper bottom portion 21 is formed of an insulating material, and the side surface portion 23 is formed of a metal (a magnetic material such as iron or a nonmagnetic material such as stainless steel 304). The upper bottom portion 21 and the side surface portion 23 may be joined by brazing, for example. In this case, the resistor 7 is formed on the side surface portion 23 after, for example, insulating treatment (coating or the like) on the side surface portion 23.

  In addition, in the second embodiment shown in FIGS. 12 to 14 and its modification, the fixed terminal 10 is supported by the side surface portion 23 of the first container 20, but instead of this, FIGS. The fixed terminal 10 may be supported by the upper bottom portion 21 of the first container 20 as in the modification of the first embodiment shown in FIG.

  In addition, each of the two fixed terminals 10 of the relay 100 of the above embodiment has one fixed contact 18, and the movable contact 50 has two movable contacts 58 corresponding to the respective fixed contacts 18. However, the movable contact 50 may have a third or more additional movable contacts in addition to the two movable contacts 58. Similarly, each fixed terminal 10 may have a second or more additional fixed contacts in addition to the one fixed contact 18. In these cases, the number and correspondence between the additional movable contact and the additional fixed contact can be arbitrarily set. The same applies to the fixed contact 618 of the fixed terminal 610 and the movable contact 658 of the movable contact 650. In other words, the description “a relay having two fixed terminals each having a fixed contact and a movable contact having two movable contacts respectively corresponding to each fixed contact” means that each fixed terminal has two or more fixed contacts. This does not exclude the case where the movable contactor has three or more movable contacts.

  Moreover, in each said embodiment, although the resistor 7 is formed in the film form by screen printing, the resistor 7 may be formed by another method. For example, the resistor 7 may be formed by forming a resistor film on the outer surface of the first container 20 by vapor deposition and then cutting an unnecessary portion of the film. Further, the resistor 7 is not necessarily in the form of a film. If the resistor 7 is not in the form of a film, for example, a manufacturing method in which cement resistance is integrated with the first container 20 or the resistor 7 is embedded before firing the material forming the first container 20. The manufacturing method described above may realize a configuration in which the resistor 7 is embedded in the first container 20 itself.

  Moreover, in the said embodiment, although each edge part of the resistor 7 is electrically connected to the fixed terminal 10 or the fixed terminal 610, parts other than the edge part of the resistor 7 are the fixed terminal 10 or the fixed terminal. It may be electrically connected to 610.

  Further, in the modified example of the first embodiment, the second embodiment, and the modified example, the planar shape of the resistor 7 may be a shape other than the meandering shape. In the first embodiment, the planar shape of the resistor 7 may be a meandering shape. In the first embodiment and the modification thereof, only one of the first resistor 7W and the second resistor 7X may be provided.

  In each of the above embodiments, a mechanism for moving the movable iron core 72 by magnetic force is used as the drive mechanisms 90 and 690. However, the present invention is not limited to this, and other mechanisms for moving the movable contacts 50 and 650 are used. A mechanism may be used. For example, a mechanism that moves the movable contacts 50 and 650 by extending and contracting the lift portion by installing a lift portion that can be extended and contracted from the outside in the movable contacts 50 and 650 may be employed. Further, the restriction portion 60 b of the rod 60 may be joined to the movable contacts 50 and 650. Thus, the movable contacts 50 and 650 can be moved in conjunction with the movement of the movable iron core 72 without providing the spring 62. Further, in place of the first spring 62, various spring members such as a disc spring and a leaf spring, and other elastically deformable members such as rubber may be employed. Moreover, the shape of each member, the joining position between each member, and the joining method can be set arbitrarily.

DESCRIPTION OF SYMBOLS 1 ... Electric power system 2 ... Storage battery 3 ... Power converter 4 ... Motor 5 ... Positive side main relay 6 ... Precharge relay 7 ... Resistor 8 ... Negative side main relay 9 ... Smoothing capacitor 10 ... Fixed terminal 12 ... Connection port 13 ... Flange part 14 ... Main body part 17 ... Diaphragm part 18 ... Fixed contact 19 ... Fixed contact part 20 ... First container 21 ... Upper bottom part 22 ... Through hole 23 ... Side part 26 ... Groove 30 ... Joint member 32 ... Base member 40 ... Coil container 42 ... Coil bobbin 44 ... Coil 50 ... Movable contactor 58 ... Movable contact point 60 ... Rod 60b ... Restriction part 62 ... First spring 64 ... Second spring 70 ... Fixed iron core 72 ... Movable iron core 80 ... For iron core Container 82 ... Guide part 90 ... Drive mechanism 92 ... Container 99 ... Airtight space 100 ... Relay 102 ... Pedestal part 104 ... Wheel 110 ... Mounting mechanism 120 ... Permanent Magnet 130 ... Junction block 140 ... Bus bar 150 ... Precharge terminal 152 ... Bending part 610 ... Fixed terminal 618 ... Fixed contact 650 ... Movable contact 658 ... Movable contact 690 ... Drive mechanism

Claims (6)

Two conductive main fixed terminals each having a main fixed contact, a conductive main movable contact having two main movable contacts corresponding to each of the main fixed contacts, and moving the main movable contact A relay comprising: a main drive member that switches between a state in which each main movable contact is in contact with a corresponding main fixed contact and a state in which the main movable contact is not in contact; and a first container that supports the two main fixed terminals.
A limiting resistor formed on the outer surface of the first container or embedded in the first container itself and electrically connected to the first main fixed terminal which is one of the two main fixed terminals A relay comprising a first resistor for use. The relay of claim 1, further comprising:
Two conductive sub-fixed terminals supported by the first container, each having a sub-fixed contact;
A conductive sub-movable contact having two sub-movable contacts respectively corresponding to the sub-fixed contacts;
A sub-drive member that moves the sub-movable contacts to switch between a state in which each sub-movable contact is in contact with the corresponding sub-fixed contact and a state in which it is not in contact with each other,
A first sub-fixed terminal which is one of the two sub-fixed terminals is electrically connected to the first main fixed terminal via the first resistor;
The relay, wherein the second sub-fixing terminal which is the other of the two sub-fixing terminals is electrically connected to the second main fixing terminal which is the other of the two main fixing terminals. The relay according to claim 2, further comprising:
A second resistor for limiting resistance formed on the outer surface of the first container or embedded inside the first container itself;
The relay, wherein the second sub-fixed terminal is electrically connected to the second main fixed terminal via the second resistor. The relay according to claim 2 or claim 3,
The distance between the first main fixed terminal and the first sub fixed terminal is longer than the distance between the first main fixed terminal and the second sub fixed terminal, relay. In the relay according to any one of claims 1 to 4,
The relay is characterized in that the resistor is in the form of a film.   The junction block which accommodated the relay as described in any one of Claim 1- Claim 5.

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