JP2016208690A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device which enables efficient cooling of device components mounted thereon.SOLUTION: An electronic device 100 includes: device components 1a, 1b, 1c including connection terminals 3 electrically connected to external connection terminals 5; a device storage box 2 in which the device components 1a, 1b, 1c are attached so that the connection terminals 3 are positioned at an interior art; and heat radiation members 4, 4A which are provided so as to cover connection parts between the connection terminals 3 and the external connection terminals 5. The heat radiation member 4, 4A include areas which are exposed to the outside of the device storage box 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cooling structure for equipment components mounted on an electronic equipment.

  JP, 2002-084627, A (patent documents 1), JP, 2013-196840, (patent documents 2), JP, 2013-146144, (patents) concerning the cooling structure of the device parts carried in electronic equipment Reference 3), Japanese Patent Application Laid-Open No. 2004-227986 (Patent Document 4), Japanese Patent Application Laid-Open No. 2013-219043 (Patent Document 5), and the like.

  For example, in the electrical junction box disclosed in Patent Document 1, in order to dissipate heat when a relay is built in the electrical junction box, a heat radiating rib is provided in the case, and the relay is brought into contact with the heat radiating rib. A technique for dissipating heat by transmitting heat generation to a case is disclosed.

JP 2002-084627 A JP 2013-196840 A JP 2013-146144 A JP 2004-227986 A JP 2013-219043 A

  However, when the thermal conductivity of the case is small, it is conceivable that the heat dissipation is reduced. Further, the heat generation of the relay generates heat not only from the relay body but also at the connection portion with the external terminal (bus bar).

  This invention is made | formed in view of the said subject, and it aims at providing the electronic device which can perform efficiently cooling of the components mounted in an electronic device.

  In this electronic device, a device part including a connection terminal electrically connected to an external connection terminal, a device storage box in which a plurality of the device parts are mounted such that the connection terminal is located inside, and the connection terminal And a heat radiating member provided so as to cover a connection portion between the external connection terminal and the external connection terminal, and the heat radiating member includes a region exposed to the outside of the device housing box.

  According to this electronic device, local heat generated at the connection portion between the connection terminal of the battery device component and the external connection terminal is transmitted to the heat dissipation member and efficiently discharged from the heat dissipation member to the outside of the device storage box. Can do.

  According to this electronic device, it is possible to efficiently cool the device components mounted on the electronic device.

It is a perspective view which shows the external appearance structure of the electronic device in embodiment. It is the II sectional view taken on the line in FIG. It is a disassembled perspective view which shows the connection state of the connection terminal of an electronic device and external connection terminal in embodiment. It is the figure which looked up apparatus components, such as a relay in the electronic device in embodiment, a fuse, and a limiting resistance. It is a perspective view which shows the structure of the electronic device in other embodiment.

  Embodiments of an example based on the present invention will be described below with reference to the drawings. In the embodiments described below, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. The same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated. It is planned from the beginning to use the structures in the embodiments in appropriate combinations. In the drawings, the actual dimensional ratios are not described, and some ratios are described in order to facilitate understanding of the structure.

(Embodiment: electronic device 100)
The electronic device 100 will be described with reference to FIGS. 1 is a perspective view showing an external configuration of the electronic device 100, FIG. 2 is a cross-sectional view taken along the line II in FIG. 1, and FIG. 3 is an exploded perspective view showing a connection state between the connection terminal 3 and the external connection terminal 5 FIGS. 4A and 4B are views of devices such as the relay 1a, the fuse 1b, and the limiting resistor 1c.

  In the future, in vehicles such as HV, PHV, EV, etc., it is required to increase the EV travel distance or travel only by the motor, and the required charge / discharge amount (battery pack usage range) is expanding. However, when a large current flows through the battery device component for controlling it, there may be a case where the charge / discharge amount must be limited depending on the device component itself or the heat generation protection requirements of the case.

  However, in an electronic device, it is possible to increase the charge / discharge amount of the battery by efficiently radiating local heat generated at the connection portion between the connection terminal of the battery device component and the external connection terminal.

  Electronic device 100 in the present embodiment has metal device housing box 2. In the device storage box 2, device components such as the relay 1a, the fuse 1b, and the limiting resistor 1c are stored. These device parts are parts that generate heat when conducting. Device parts such as the relay 1 a, the fuse 1 b, and the limiting resistor 1 c are connected to the external connection terminal 5 and are located inside the device storage box 2. Some of the equipment components such as the limiting resistor 1c are disposed so as to be exposed from the upper surface of the equipment storage box 2 in order to increase the cooling efficiency.

  Referring to FIG. 2, for example, a plurality of connection terminals 3 are provided in an area accommodated inside the device accommodation box 2 of the relay 1 a. As shown in FIG. 4 to be described later, there are two connection terminals 3 extending along the longitudinal direction of the device storage box 2 and two connection terminals 3 extending along the short direction of the device storage box 2. . Similarly, a plurality of connection terminals 3 are also provided for device parts such as the fuse 1b and the limiting resistor 1c, but the description thereof is omitted here.

  Referring to FIG. 3, connection terminal 3 on the device component side and external connection terminal 5 are connected so as to be electrically conducted via a female-female terminal (hereinafter referred to as FF terminal). . Here, the FF terminal 6 generally has a high contact resistance. As a result, when the relay 1a becomes conductive, the FF terminal 6 generates heat. Therefore, in the present embodiment, a configuration in which the FF terminal 6 is covered with the heat radiating member 4 is adopted. The heat radiating member 4 is made of ceramic having high insulation performance and high thermal conductivity.

  Referring to FIG. 4, in the present embodiment, each FF terminal 6 is further covered by one heat radiating member 4A. Thus, by covering each FF terminal 6 with one heat radiating member 4A, the surface area increases and the heat capacity also increases. As a result, local heat generated at the connection portion between the connection terminal and the external connection terminal of the battery device component can be transmitted to the heat radiating member 4A and efficiently radiated from the heat radiating member 4A to the outside of the device housing box 2. it can. Thereby, the temperature rise in the equipment storage box 2 is avoided, and the charge / discharge amount of the battery can be increased.

  Furthermore, the heat dissipating member 4A in the present embodiment is disposed so as to be in contact with the cooling surface 2A provided on one side surface of the device storage box 2, as shown in FIGS. A plurality of fins 2F are provided on the cooling surface 2A. Heat is radiated to the fins 2F by sending air by natural convection or forced convection. For example, you may make it provide a duct and a blower so that the exhaust air after cooling used for cooling the battery pack provided separately may be guide | induced to this fin 2F.

  Thus, by using the fins 2F, the surface area is increased and heat can be radiated efficiently. Therefore, the fin 2F has a function as a heat radiating member together with the heat radiating member 4A, and the fin 2F constitutes a region exposed to the outside of the device housing box 2 as a heat radiating member.

  It is also conceivable to directly cool the connecting portion between the connecting terminal 3 and the external connecting terminal 5 without providing the heat radiating member 4A. However, in this case, there is a concern that a short circuit may occur with other terminals due to condensation, and corrosion of the connection portion is likely to occur. On the other hand, according to the configuration of the present embodiment, occurrence of such a problem can be avoided.

  In the said embodiment, although each FF terminal 6 employ | adopts the structure covered with one heat radiating member 4A, you may provide a separate heat radiating member with respect to each FF terminal 6, A heat radiating member may be provided for each device component of the relay 1a, the fuse 1b, and the limiting resistor 1c.

(Other embodiments)
With reference to FIG. 5, the configuration of electronic apparatus 100 </ b> A in another embodiment will be described. FIG. 5 is a perspective view showing a configuration of electronic apparatus 100A according to another embodiment. In the electronic device 100 according to the above-described embodiment, the heat dissipation member 4 is provided so as to contact the cooling surface 2A provided on one side surface of the device housing box 2. However, in the electronic device 100A illustrated in FIG. An opening 2H is provided on one side surface of the box 2, and a configuration in which the fin 4F is directly provided on the heat radiating member 4 is adopted. A part of the fin 4F is provided so as to be exposed to the outside of the device storage box 2 from the opening 2H.

  According to this configuration, heat is radiated from the fins 4F, and the heat inside the device storage box 2 is easily released from the opening 2H. As a result, a temperature rise in the device storage box 2 is avoided, and the amount of charge / discharge of the battery can be increased. Thus, the fin 4F provided directly in the heat radiating member 4 has a heat radiating member function.

  Although the embodiments have been described above, the embodiments disclosed herein are illustrative and non-restrictive in every respect. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1a relay, 1b fuse, 1c limiting resistor, 2 device storage box, 2A cooling surface, 2H opening, 2F, 4F fin, 3 connection terminal, 4, 4A heat dissipation member, 5 external connection terminal, 6 FF terminal, 100, 100A electronic machine.

Claims (1)

Equipment components including connection terminals electrically connected to external connection terminals;
A device storage box in which a plurality of the device parts are mounted such that the connection terminal is located inside;
A heat dissipating member provided so as to cover a connection portion between the connection terminal and the external connection terminal;
With
The heat dissipation member includes a region exposed to the outside of the device storage box.
Electronics.

Images