Electronic apparatus and power conversion device

Abstract

To facilitate mounting work of a resin holder in an electronic apparatus comprising the resin holder which is mounted to a housing.SOLUTION: An electronic apparatus comprises a main body case 11, in which an electronic component is accommodated, and a resin holder 16 which is fastened to the main body case 11. The main body case 11 includes a first insertion hole part 33e for positioning the resin holder 16. The resin holder 16 includes a first pin 16c which can be at least partially inserted into the first insertion hole part 33e in an elastically deformed state and is pressure-welded to an inner wall surface of the first insertion hole part 33e by resilience.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an electronic device and a power conversion device. [Background technology]

[0002] For example, Patent Document 1 discloses an electrical device in which a resin part is attached to a housing. In the electrical device disclosed in Patent Document 1, the resin part is connected to a harness and fastened to the housing via a fixing screw. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5538659 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the resin holder of the resin part disclosed in Patent Document 1 is fastened to a housing. For this reason, for example, when a worker attaches the resin holder to a housing, the worker positions the resin holder on the housing and then fastens the resin holder to the housing using screws or the like. However, for example, when the resin holder is attached to the housing from the side, the positioned resin holder may be displaced or fall due to gravity before fastening.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to simplify the work of attaching a resin holder to an electronic device that includes the resin holder attached to a housing. [Means for solving the problem]

[0006] The present invention employs the following configuration as a means for solving the above problems.

[0007] A first aspect of the present invention is an electronic device comprising a housing containing an electronic component and a resin holder fastened to the housing, wherein the housing has an insertion hole for positioning the resin holder, and the resin holder has an insertion protrusion that can be inserted into the insertion hole in an elastically deformed state at least in part and is pressed against the inner wall surface of the insertion hole by a restoring force.

[0008] A second aspect of the present invention is a power conversion device, which comprises the electronic device of the first aspect, and employs a configuration in which the electronic component performs power conversion. [Effects of the Invention]

[0009] According to the present invention, the resin holder has an insertion protrusion, and at least a portion of the insertion protrusion is inserted into the insertion hole of the housing in an elastically deformed state. The inserted insertion protrusion is pressed against the inner wall surface of the insertion hole by the restoring force of the elastically deformed portion. Therefore, according to the present invention, even before fastening, the positioned resin holder can be prevented from being displaced or dropped. Therefore, according to the present invention, it is possible to simplify the installation work of the resin holder in an electronic device having a resin holder that is attached to a housing. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic configuration diagram of a vehicle on which a power conversion device according to a first embodiment of the present invention is mounted. [Figure 2] 1 is an exploded perspective view showing a schematic structural configuration of a power conversion device according to a first embodiment of the present invention. [Figure 3] 2 is a partially enlarged perspective view of a state in which a resin holder of a main body case included in the power conversion device according to the first embodiment of the present invention has been removed. FIG. [Figure 4] 1 is a perspective view of a resin holder included in a power converter according to a first embodiment of the present invention, viewed from the main body case side. [Figure 5] 2 is a schematic cross-sectional view including a first pin of a resin holder included in the power converter according to the first embodiment of the present invention. FIG. [Figure 6] 10 is a schematic cross-sectional view including a first pin of a resin holder included in a power converter according to a second embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electronic device and a power conversion device according to the present invention will be described below with reference to the drawings.

[0012] (First embodiment) Fig. 1 is a schematic configuration diagram of a vehicle 100 equipped with a power conversion device 1 (electronic device) of this embodiment. The vehicle 100 is, for example, an electric vehicle or a hybrid vehicle. As shown in Fig. 1, the vehicle 100 includes, for example, a high-voltage battery HB, a low-voltage battery LB, a motor M, and the power conversion device 1 of this embodiment.

[0013] The high-voltage battery HB is a secondary battery such as a lithium-ion battery, and outputs relatively high-voltage DC power of, for example, several hundred volts. This high-voltage battery HB is a battery that outputs driving power to be supplied to the motor M, and is a so-called driving battery. The low-voltage battery LB is a secondary battery such as a lead-acid battery, and outputs relatively low-voltage DC power of, for example, about 12 V. This low-voltage battery LB is a battery that outputs auxiliary power to be supplied to auxiliary devices (not shown), and is a so-called auxiliary device battery.

[0014] The motor M generates rotational power by receiving driving power from the high-voltage battery HB via the power conversion device 1. The rotational power generated by the motor M is transmitted to the drive wheels of the vehicle 100 via a transmission mechanism (not shown).

[0015] The power conversion device 1 of this embodiment is a device that performs power conversion. For example, the power conversion device 1 converts DC power to AC power, AC power to DC power, and voltage. Specifically, the power conversion device 1 of this embodiment boosts the drive power output from the high-voltage battery HB and converts it to AC, and supplies it to the motor M. The power conversion device 1 of this embodiment also converts the regenerative power output from the motor M to DC, reduces the voltage, and supplies it to the high-voltage battery HB. Furthermore, the power conversion device 1 of this embodiment reduces the voltage of the drive power output from the high-voltage battery HB to generate power for auxiliary devices, and supplies it to the low-voltage battery LB.

[0016] 1, a power conversion device 1 of this embodiment includes a step-up / step-down converter 2, an inverter 3, and a DC-DC converter 4. The step-up / step-down converter 2, the inverter 3, and the DC-DC converter 4 constitute a power conversion circuit H that performs power conversion.

[0017] The buck-boost converter 2 boosts or lowers the voltage of electric power. For example, the buck-boost converter 2 boosts the drive power supplied from the high-voltage battery HB and outputs it to the inverter 3. The buck-boost converter 2 also lowers the regenerative power supplied from the inverter 3 and outputs it to the high-voltage battery HB. The buck-boost converter 2 includes a capacitor C and a reactor L.

[0018] The inverter 3 converts DC power to AC power or AC power to DC power. For example, the inverter 3 converts DC driving power supplied from the step-up / step-down converter 2 into three-phase AC power and outputs it to the motor M. The inverter 3 also converts regenerative AC power supplied from the motor M into DC power and outputs it to the high-voltage battery HB.

[0019] The step-up / step-down converter 2 and the inverter 3 each include a power device. Each power device includes a power transistor. These power transistors include semiconductor elements and are mounted on an insulated circuit board. For example, each power transistor includes a plurality of semiconductor elements formed of, for example, SiC (silicon carbide). Note that the power transistor may include semiconductor elements formed of other materials such as Si (silicon) or GaN (gallium nitride).

[0020] The DC-DC converter 4 converts the drive power output from the high-voltage battery HB into power for the auxiliary devices by stepping down the voltage. The DC-DC converter 4 converts the drive power, which is DC, into power for the auxiliary devices.

[0021] Fig. 2 is an exploded perspective view showing a schematic structural configuration of the power conversion device 1 of this embodiment. As shown in Fig. 2, the power conversion device 1 of this embodiment includes an intelligent power module 10, a main body case 11 (housing), a capacitor unit 12, a reactor unit 13, a DC-DC converter unit 14, a connector unit 15, and a resin holder 16.

[0022] In the following description, for convenience of explanation, the direction in which the DC-DC converter unit 14 and the like are positioned relative to a partition wall 31a of a center plate 31 (described later) of the main body case 11 is referred to as "upward," and the direction in which the intelligent power module 10 is positioned relative to a partition wall 31a of a center plate 31 (described later) of the main body case 11 is referred to as "downward." However, the installation posture of the power conversion device 1 is not particularly limited.

[0023] The intelligent power module 10 includes a power module 20, a gate driver board 21, an ECU board 22, etc. The power module 20 includes a plurality of power devices having semiconductor elements, a resin power module case that houses these power devices, etc.

[0024] The gate driver board 21 is a board on which a gate driver that generates drive signals for the step-up / step-down converter 2 and the inverter 3, which are formed by power devices, is provided. Such a gate driver board 21 is stacked on the power module 20. The ECU board 22 is a board on which an ECU (Electronic Control Unit) that controls the gate driver board 21 is provided. This ECU board 22 is stacked on the gate driver board 21. Note that the gate driver board 21 and ECU board 22 may be integrated.

[0025] Such an intelligent power module 10 includes power devices that form the step-up / step-down converter 2 and the inverter 3. In other words, the intelligent power module 10 forms at least a part of the step-up / step-down converter 2 and the inverter 3.

[0026] The main body case 11 is a case that houses electronic components such as the intelligent power module 10, the capacitor unit 12, the reactor unit 13, the DC-DC converter unit 14, and the connector unit 15. The main body case 11 includes an upper cover 30, a center plate 31, and a lower cover 32. The upper cover 30, the center plate 31, and the lower cover 32 are formed so as to be separable in the vertical direction.

[0027] The upper cover 30 is a part that covers from above the DC-DC converter unit 14 and the reactor unit 13, which are fixed from above to the center plate 31. In other words, the upper cover 30 is fastened to the center plate 31 via bolts or the like (not shown).

[0028] The central plate 31 is a support plate located between the upper cover 30 and the lower cover 32. The central plate 31 includes a flat partition wall portion 31a and a surrounding wall portion 31b that is provided so as to surround the partition wall portion 31a from the side.

[0029] In this embodiment, the reactor unit 13 and the DC-DC converter unit 14 are arranged above the partition wall 31a. Also, in this embodiment, the intelligent power module 10 is arranged below the partition wall 31a. Also, in this embodiment, the capacitor unit 12 is provided so as to penetrate the partition wall 31a in the vertical direction. Therefore, the partition wall 31a is provided with an insertion opening 31c through which the capacitor unit 12 is inserted.

[0030] The intelligent power module 10, the capacitor unit 12, the reactor unit 13, the DC-DC converter unit 14, and the connector unit 15 are fastened to bosses or the like provided on the partition wall portion 31a by bolts or the like (not shown).

[0031] A cooling flow path for guiding a coolant is provided inside the partition wall 31a. By flowing the coolant through this cooling flow path, the partition wall 31a functions as a cooling jacket 40, and the intelligent power module 10, the capacitor unit 12, the reactor unit 13, the DC-DC converter unit 14, and the connector unit 15 are cooled.

[0032] The surrounding wall portion 31b is provided so as to surround the intelligent power module 10, the capacitor unit 12, the reactor unit 13, the DC-DC converter unit 14, and the connector unit 15 from the sides. The surrounding wall portion 31b is connected to the edge of the partition wall portion 31a and is provided so as to protrude upward and downward from the partition wall portion 31a. The upper end of the surrounding wall portion 31b is abutted by the upper cover 30. The lower end of the surrounding wall portion 31b is abutted by the lower cover 32.

[0033] The lower cover 32 is a part that covers from below the intelligent power module 10 and the connector unit 15 that are fixed to the central plate 31 from below. The lower cover 32 also covers the capacitor unit 12 from below. The lower cover 32 is fastened to the central plate 31 via bolts or the like (not shown). The lower cover 32 also has an opening 32a for exposing the connector unit 15.

[0034] The capacitor unit 12 is connected to the intelligent power module 10 and is disposed to the side of the power module 20. The capacitor unit 12 is a unit including a capacitor C provided in the step-up / step-down converter 2. The capacitor unit 12 includes elements that form the capacitor C and a housing that covers these elements.

[0035] The reactor unit 13 is fixed to the center plate 31. The reactor unit 13 is connected to the intelligent power module 10 via a bus bar (not shown), and in this embodiment, is disposed above the center plate 31. The reactor unit 13 is a unit including a reactor provided in the step-up / step-down converter 2.

[0036] The DC-DC converter unit 14 is fixed to the center plate 31. This DC-DC converter unit 14 is connected to the intelligent power module 10 via a bus bar (not shown), and in this embodiment, is disposed above the center plate 31. The DC-DC converter unit 14 is a unit that forms the DC-DC converter 4 shown in FIG. 1.

[0037] The connector unit 15 is a unit to which the motor-side connector of the motor unit is connected. In this embodiment, the connector unit 15 is disposed below the partition wall portion 31a of the center plate 31. The connector unit 15 is also disposed further below the intelligent power module 10.

[0038] The resin holder 16 is a holding member made of resin that holds the bus bar B connected to the DC-DC converter unit 14. In this embodiment, the resin holder 16 is fastened to the center plate 31 of the main body case 11, as shown in FIG. 2. FIG. 3 is a partially enlarged perspective view of the main body case 11 with the resin holder 16 removed. FIG. 4 is a perspective view of the resin holder 16 as seen from the main body case 11 side. FIG. 5 is a schematic cross-sectional view including the first pin 16c of the resin holder 16.

[0039] As shown in FIG. 3, the surrounding wall 31b of the main body case 11 is provided with a base 33 to which the resin holder 16 is attached. The base 33 is a portion that protrudes from the outer wall surface 31d of the surrounding wall 31b, and is formed so that the abutting surface 33a of the resin holder 16 is flat. The abutting surface 33a faces the same direction as the outer wall surface 31d of the surrounding wall 31b. The peripheral wall surface 33b of the base 33 connects the outer edge of the abutting surface 33a to the outer wall surface 31d of the surrounding wall 31b, and is provided so as to surround the abutting surface 33a when viewed from the side. The peripheral wall surface 33b forms part of the outer wall surface of the main body case 11.

[0040] The base 33 is further provided with a busbar through-hole 33c, two screw holes 33d, a first insertion hole 33e (insertion hole), a second insertion hole 33f, and a locking recess 33g (see FIG. 5). The busbar through-hole 33c is a through-hole through which the busbar B held by the resin holder 16 is inserted, and is provided so as to penetrate the surrounding wall 31b in the horizontal direction. As shown in FIG. 3, the busbar through-hole 33c is formed in the center of the base 33.

[0041] The two screw holes 33d are arranged so as to sandwich the bus bar through hole 33c therebetween. A screw 17 (see FIG. 2) is threadedly engaged with each screw hole 33d. The screw 17 is a fastening member that fastens the resin holder 16 to the main body case 11.

[0042] The first insertion hole 33e (insertion hole) is a hole for positioning the resin holder 16. The first insertion hole 33e is located to the side of the busbar through-hole 33c and is formed so as to be recessed from the contact surface 33a of the base portion 33 toward the inside of the main body case 11. A first pin 16c (described later) of the resin holder 16 is inserted into the first insertion hole 33e. The first insertion hole 33e is formed so as to have a circular shape when viewed from the insertion direction of the first pin 16c.

[0043] Similar to the first insertion hole 33e, the second insertion hole 33f is a hole for positioning the resin holder 16. The second insertion hole 33f is disposed to the side of the busbar through hole 33c so that the busbar through hole 33c is sandwiched between the second insertion hole 33f and the first insertion hole 33e, and is formed to be recessed from the contact surface 33a of the base 33 toward the inside of the main body case 11. A second pin 16d (described later) of the resin holder 16 is inserted into the second insertion hole 33f. The second insertion hole 33f is formed so that its shape is circular when viewed from the insertion direction of the second pin 16d.

[0044] 5, the locking recess 33g is a recess formed in the inner wall surface of the first insertion hole 33e, and is a portion where a locking claw 52 (described later) of the resin holder 16 is locked. The locking recess 33g is connected to the inner end of the first insertion hole 33e. The locking recess 33g is recessed from the inner wall surface of the first insertion hole 33e toward the radially outer side of the first insertion hole 33e.

[0045] In this embodiment, the locking recess 33g is formed so as to be recessed downward from the first insertion hole 33e, and is provided so as to penetrate the peripheral wall surface 33b of the base 33. In other words, the locking recess 33g communicates from the inner wall surface of the first insertion hole 33e to the outer wall surface of the main body case 11. Such locking recess 33g can be used as a drainage hole that drains water from the first insertion hole 33e to the outside of the base 33.

[0046] As shown in FIG. 4, the resin holder 16 has a base 16a, a busbar holding portion 16b, a first pin 16c (insertion protrusion), and a second pin 16d. The base 16a is a plate-shaped portion whose back surface 16g (the surface that abuts against the main body case 11) abuts against an abutment surface 33a (the outer wall surface of the surrounding wall portion 31b) of the stand portion 33. The base 16a also has screw insertion holes 16e formed therein for inserting the screws 17. The screw insertion holes 16e are provided corresponding to the respective screw holes 33d, and two screw insertion holes 16e are provided, similar to the screw holes 33d. When the resin holder 16 is positioned relative to the main body case 11, each screw insertion hole 16e is positioned to overlap the corresponding screw hole 33d when viewed from the insertion direction of the screw 17.

[0047] The base of the first pin 16c and the base of the second pin 16d are connected to the back surface of the base 16a. In other words, the base 16a supports the first pin 16c and the second pin 16d. The shape of the base 16a is formed to a size that covers the contact surface 33a of the base 33. However, the shape of the base 16a is not particularly limited, and may be a shape different from the contact surface 33a of the base 33.

[0048] A seal portion 16f may be provided on the back surface of the base portion 16a so as to surround the busbar holding portion 16b. By providing the seal portion 16f, it is possible to prevent water from entering the busbar holding portion 16b and prevent the busbar B from coming into contact with water.

[0049] Busbar holding portion 16b is a portion provided to protrude from the back surface of base portion 16a and holds busbar B. Busbar holding portion 16b is inserted into busbar through-hole 33c of base portion 33 with resin holder 16 positioned relative to main body case 11.

[0050] The first pin 16c is a protrusion for positioning the resin holder 16 relative to the main body case 11. In this embodiment, the first pin 16c is inserted into the first insertion hole 33e of the main body case 11.

[0051] 4 and 5, the first pin 16c has a root portion 50, an elastically deforming portion 51, and a locking claw 52. The root portion 50 is a portion that forms the root of the first pin 16c and is connected to the base portion 16a. In other words, the root portion 50 is connected to the base portion 16a, thereby connecting the root of the first pin 16c to the base portion 16a. The root portion 50 is formed in a shape with a larger cross-sectional area than the elastically deforming portion 51, and directly or indirectly supports the elastically deforming portion 51 and the locking claw 52.

[0052] The elastically deforming portion 51 is a band-shaped portion having a smaller cross-sectional area than the root portion 50, and extends in a direction away from the base portion 16a from the root portion 50. The front and back surfaces of the elastically deforming portion 51 face in the vertical direction, and in this embodiment, the elastically deforming portion 51 can be elastically deformed so as to move the tip portion in the vertical direction.

[0053] The elastic deformation portion 51 is arranged so as to be in a slightly elastically deformed state when the first pin 16c is inserted into the first insertion hole 33e. In this embodiment, the elastic deformation portion 51 is provided so as to be connected to the lower part of the base portion 50. When the first pin 16c is inserted into the first insertion hole 33e, the elastic deformation portion 51 elastically deforms such that the tip portion moves slightly upward. The elastically deformed elastic deformation portion 51 is pressed against the inner wall surface of the first insertion hole 33e by a restoring force.

[0054] Furthermore, the elastic deformation portion 51 becomes thinner as it moves away from the base portion 16a. More specifically, the lower surface of the elastic deformation portion 51 is formed parallel to the inner wall surface of the first insertion hole 33e, and the upper surface of the elastic deformation portion 51 is formed as a tapered surface that approaches the inner wall surface of the first insertion hole 33e toward the tip of the elastic deformation portion 51. As a result, the elastic deformation portion 51 is formed so that the thickness dimension in the up-down direction decreases toward the tip.

[0055] The locking claw 52 is provided to protrude downward from the underside of the tip of the elastic deformation portion 51. The locking claw 52 is a portion that is locked into a locking recess 33g provided in the first insertion hole portion 33e. As shown in Fig. 5, the locking claw 52 is inserted into the locking recess 33g from above and locked in the locking recess 33g.

[0056] The base 16a also has a drain hole 16h located below the first pin 16c as described above. The drain hole 16h is provided from the back surface 16g, which is the surface that abuts against the main body case 11, through the base 16a. The drain hole 16h drains water between the main body case 11 and the resin holder 16. The position of the drain hole 16h is not limited to below the first pin 16c. For example, the drain hole 16h may be provided below the second pin 16d.

[0057] The second pin 16d is a protrusion that, together with the first pin 16c, positions the resin holder 16 relative to the main body case 11. In this embodiment, the second pin 16d is inserted into the second insertion hole 33f of the main body case 11. The resin holder 16 is positioned relative to the main body case 11 by inserting the second pin 16d into the second insertion hole 33f and inserting the first pin 16c into the first insertion hole 33e.

[0058] When attaching such a resin holder 16 to the main body case 11, the first pin 16c is inserted into the first insertion hole 33e, and the second pin 16d is inserted into the second insertion hole 33f. This causes the elastic deformation portion 51 of the first pin 16c to elastically deform and be pressed against the inner wall surface of the first insertion hole 33e. The locking claw 52 is locked in the locking recess 33g.

[0059] After inserting the first pin 16c into the first insertion hole 33e and the second pin 16d into the second insertion hole 33f, the resin holder 16 is fastened to the main body case 11 with the screw 17. Specifically, the screw 17 is inserted into the screw insertion hole 16e of the base 16a and further screwed into the screw hole 33d of the main body case 11. In this way, the resin holder 16 is fastened to the main body case 11.

[0060] The power conversion device 1 of this embodiment as described above includes a main body case 11 and a resin holder 16. The main body case 11 accommodates electronic components therein. The resin holder 16 is fastened to the main body case 11. The main body case 11 also has a first insertion hole 33e for positioning the resin holder 16. The resin holder 16 has a first pin 16c that can be inserted into the first insertion hole 33e in an elastically deformed state at least partially, and that is pressed against the inner wall surface of the first insertion hole 33e by a restoring force.

[0061] According to the power converter 1 of this embodiment, the resin holder 16 includes a first pin 16c, and at least a portion of the first pin 16c is inserted into the first insertion hole 33e of the main body case 11 in an elastically deformed state. The inserted first pin 16c is pressed against the inner wall surface of the first insertion hole 33e by the restoring force of the elastically deforming portion 51. Therefore, according to the power converter 1 of this embodiment, the positioned resin holder 16 can be prevented from being displaced or dropped even before fastening. Therefore, according to the power converter 1 of this embodiment, the installation work of the resin holder 16 can be simplified.

[0062] In the power converter 1 of this embodiment, the resin holder 16 includes a base 16a to which the base of the first pin 16c is connected. The first pin 16c includes an elastically deformable portion 51 that is elastically deformable and becomes thinner with increasing distance from the base 16a.

[0063] According to the power converter 1 of this embodiment, the elastic deformation portion 51 is thinner toward the tip. When the elastic deformation portion 51 abuts against the inner wall surface of the first insertion hole 33e and elastically deforms, the entire portion deforms, preventing local deformation. Therefore, according to the power converter 1 of this embodiment, it is possible to prevent a load from concentrating on a portion of the elastic deformation portion 51.

[0064] In the power converter 1 of this embodiment, the main body case 11 has a locking recess 33g recessed radially outward from the first insertion hole 33e on the inner wall surface of the first insertion hole 33e. The first pin 16c has a locking claw 52 that is locked in the locking recess 33g.

[0065] According to the power conversion device 1 of this embodiment, the locking claws 52 of the first pins 16c are locked in the locking recesses 33g, thereby preventing the resin holder 16 from being displaced relative to the main body case 11. Therefore, even before the resin holder 16 is fastened by the screws 17, it is possible to prevent the resin holder 16 from being displaced relative to the main body case 11 or falling off.

[0066] Furthermore, in the power converter 1 of this embodiment, the locking recess 33g communicates from the inner wall surface of the first insertion hole 33e to the outer wall surface of the main body case 11. According to the power converter 1 of this embodiment, even if water has entered the first insertion hole 33e, it is possible to discharge the water to the outside through the locking recess 33g.

[0067] In the power converter 1 of this embodiment, the resin holder 16 includes a base 16a to which the base of the first pin 16c is connected and which abuts against the outer wall surface of the main body case 11. The base 16a also has a drainage hole that penetrates the base 16a from the surface that abuts against the main body case 11.

[0068] According to the power conversion device 1 of this embodiment, the drain holes 16h allow water to be discharged between the main body case 11 and the resin holder 16. This makes it possible to prevent water from accumulating between the main body case 11 and the resin holder 16 and coming into contact with the bus bar B, etc.

[0069] (Second embodiment) Next, a second embodiment of the present invention will be described with reference to Fig. 6. In the description of this embodiment, the description of the same parts as those in the first embodiment will be omitted or simplified.

[0070] 6 is a schematic cross-sectional view including first pin 16c of resin holder 16A in this embodiment. As shown in this figure, first pin 16c has elastic deformation portions 51 arranged opposite each other above and below. When first pin 16c is inserted into first insertion hole 33e, the tip end of each elastic deformation portion 51 is elastically deformed.

[0071] In a power converter including the resin holder 16A of this embodiment, when the first pin 16c is inserted into the first insertion hole 33e, the first pin 16c is pressed against the inner wall surface of the first insertion hole 33e by the restoring force of the elastic deformation portion 51. Therefore, the power converter of this embodiment can prevent the positioned resin holder 16A from being displaced or dropped even before fastening. Therefore, the power converter of this embodiment can simplify the installation work of the resin holder 16A.

[0072] 6, the main body case 11 may be provided with a protrusion 33h on the inner wall surface of the first insertion hole 33e for bending the tip of the elastic deformation portion 51. By providing such a protrusion 33h, the restoring force of the elastic deformation portion 51 is strengthened, and the positioned resin holder 16A can be more reliably prevented from being displaced or dropped.

[0073] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiments. The shapes and combinations of the components shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0074] For example, in the above embodiment, an example has been described in which the electronic device of the present invention is applied to a power conversion device including electronic components that perform power conversion. However, the present invention is not limited to this. The present invention can also be applied to electronic devices other than power conversion devices.

[0075] In the above embodiment, the resin holder 16 has been described as having one first pin 16c and one second pin 16d. However, the present invention is not limited to this. For example, it is also possible to adopt a configuration in which the resin holder 16 has a plurality of first pins 16c. It is also possible to adopt a configuration in which the resin holder 16 does not have a second pin 16d. Furthermore, when the resin holder 16 has a plurality of first pins 16c, it is also possible to adopt a configuration in which the resin holder has first pins 16c of different shapes (for example, the first pin 16c of the first embodiment and the first pin 16c of the second embodiment).

[0076] In the above embodiment, the resin holder 16 holds the bus bar B. However, the present invention is not limited to this. For example, the resin holder may hold a coolant pipe connected to the cooling jacket 40.

[0077] The above embodiment can also be described as follows, for example:

[0078] (Appendix 1) a housing containing electronic components; a resin holder fastened to the housing; Equipped with the housing has an insertion hole for positioning the resin holder, The resin holder has an insertion protrusion that can be inserted into the insertion hole in an elastically deformed state at least in part and is pressed against the inner wall surface of the insertion hole by a restoring force. An electronic device characterized by:

[0079] (Appendix 2) the resin holder includes a base portion to which a base of the insertion protrusion is connected, The insertion protrusion is elastically deformable and has an elastically deformable portion that becomes thinner as it moves away from the base portion. 2. The electronic device according to claim 1.

[0080] (Appendix 3) the housing has a locking recess on an inner wall surface of the insertion hole portion that is recessed toward an outer side in a radial direction of the insertion hole portion, The insertion protrusion has a locking claw that is locked in the locking recess. 3. The electronic device according to claim 1 or 2.

[0081] (Appendix 4) The electronic device described in Appendix 3, wherein the locking recess is connected from the inner wall surface of the insertion hole to the outer wall surface of the housing.

[0082] (Appendix 5) the resin holder includes a base portion to which a base of the insertion protrusion is connected and which abuts against an outer wall surface of the housing; The base has a drainage hole that penetrates the base from the surface that abuts against the housing. 2. The electronic device according to claim 1.

[0083] (Appendix 6) The electronic device comprises the electronic device according to any one of Supplementary Notes 1 to 5, The electronic component performs power conversion. A power conversion device characterized by: [Explanation of symbols]

[0084] 1... Power conversion device (electronic device), 2... Step-up / down converter, 3... Inverter, 4... DC-DC converter, 10... Intelligent power module, 11... Main body case, 12... Capacitor unit, 13... Reactor unit, 14... DC-DC converter unit, 15... Connector unit, 16... Resin holder, 16a... Base, 16A... Resin holder, 16b... Bus bar holding part, 16c... First pin (insertion protrusion), 16d... Second pin, 16e... Screw insertion hole, 16f...seal portion, 16g...back surface, 16h...drainage hole, 17...screw, 20...power module, 33...base portion, 33a...contact surface, 33b...peripheral wall surface, 33c...busbar through hole, 33d...screw hole, 33e...first insertion hole portion (insertion hole portion), 33f...second insertion hole portion, 33g...locking recess, 33h...projection portion, 50...base portion, 51...elastic deformation portion, 52...locking claw, 100...vehicle, H...power conversion circuit, HB...high-voltage battery, LB...low-voltage battery, M...motor

Claims

1. a housing containing electronic components; a resin holder fastened to the housing; Equipped with the housing has an insertion hole for positioning the resin holder, The resin holder has an insertion protrusion that can be inserted into the insertion hole in an elastically deformed state at least in part and is pressed against the inner wall surface of the insertion hole by a restoring force. An electronic device characterized by:

2. the resin holder includes a base portion to which a base of the insertion protrusion is connected, The insertion protrusion is elastically deformable and has an elastically deformable portion that becomes thinner as it moves away from the base portion.

2. The electronic device according to claim 1.

3. the housing has a locking recess on an inner wall surface of the insertion hole portion that is recessed toward an outer side in a radial direction of the insertion hole portion, The insertion protrusion has a locking claw that is locked in the locking recess.

3. The electronic device according to claim 1 or 2.

4. 4. The electronic device according to claim 3, wherein the locking recess is connected from an inner wall surface of the insertion hole to an outer wall surface of the housing.

5. the resin holder includes a base portion to which a base of the insertion protrusion is connected and which abuts against an outer wall surface of the housing; The base has a drainage hole that penetrates the base from the surface that abuts against the housing.

2. The electronic device according to claim 1.

6. The electronic device according to claim 1 or 2, The electronic component performs power conversion. A power conversion device characterized by:

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