CN111326370A

CN111326370A - Relay control system

Info

Publication number: CN111326370A
Application number: CN202010132503.XA
Authority: CN
Inventors: 森田刚
Original assignee: Bluesky Technologies
Current assignee: Bluesky Technologies
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-06-23

Abstract

The technical problem is as follows: the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a novel technique that is useful for realizing a measure against noise of a relay switch without depending on a sound absorbing material or a noise absorbing material. The solution is as follows: provided is a technology relating to a relay control system, the relay control system including: a housing containing at least an inductive load; a terminal electrically connected to the inductive load and exposed to a bottom surface of the housing; and a bus bar extending from the terminal in the order of the bottom surface and the side surface of the housing.

Description

Relay control system

Technical Field

The invention relates to a relay control system.

Background

Relay switches in EVs (Electric vehicles) are used to implement the preferred electrical switches in an on-board environment containing components such as motors, inverters, batteries, etc.

A portion of the on-board components in the on-board environment of the EV are suitably electrically switched via a relay control system.

A mechanical relay control system, which is one of conventional relay control systems, is required to take measures against noise caused by mechanical vibration generated in accordance with the operation of an inductive load.

Patent document 1 discloses an invention for providing a sound absorbing material, a sound deadening material, or the like in a case of an electrical junction box to insulate operation sound of a switch or the like generated in the case, and for providing a sound absorbing material, a sound absorbing body, a sound deadening material, or/and a sound deadening body made of a foamed resin, a foamed metal, a helmholtz resonator, or the like in an inner surface or an outer surface of the case in an electrical junction box in which an electrical component such as a relay is housed in the case, to insulate sound so that, for example, operation sound generated when the relay is operated (turned on) or when the relay is reset (turned off) does not leak to the outside.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-304162

Disclosure of Invention

Technical problem to be solved

However, as exemplified in the invention described in patent document 1, when a case provided with a sound absorbing material or a noise damper is applied as a noise countermeasure for a relay switch or the like, there is a problem that it is difficult to miniaturize a relay control system.

In view of the above circumstances, an object of the present invention is to provide a new technique that contributes to the realization of measures against noise of a relay switch that do not depend on the use of a sound absorbing material or a sound absorbing material.

(II) technical scheme

In order to solve the above-described problems, the present invention provides a relay control system including: a housing containing at least an inductive load; a terminal electrically connected to the inductive load and exposed to an upper surface of the housing; and a bus bar extending from the terminal along the upper surface and bent in a direction substantially orthogonal to the upper surface. With this configuration, in the present invention, the bus bar extending while being bent in the order of the bottom surface and the side surface of the housing prevents propagation of mechanical vibration due to the operation of the inductive load, and therefore, noise generated by the housing can be appropriately reduced.

In a preferred aspect of the present invention, the bus bar extends in the order of the upper surface and the side surface of the housing, and extends away from the housing in a direction parallel to the upper surface. With such a configuration, when the relay control system is incorporated into the closed space, the space for accommodating the bus bar can be saved.

In a preferred aspect of the present invention, the first terminal and the second terminal are exposed on the upper surface, the first bus bar extends from the first terminal along the upper surface and is bent in a direction substantially orthogonal to the upper surface, and the second bus bar extends from the second terminal along the upper surface and is bent in a direction substantially orthogonal to the upper surface. By providing such a structure, the present invention can comprehensively perform countermeasures against noise in the bus bar associated with one relay switch.

In a preferred aspect of the present invention, the bus bar is a flexible bus bar having flexibility. With such a configuration, the present invention can provide a relay control system capable of freely bending a bus bar for reducing noise by a human power.

(III) advantageous effects

The present invention can provide a new technique that contributes to the realization of measures against noise of a relay switch that do not depend on the use of a sound absorbing material or a sound absorbing material.

Drawings

Fig. 1 is a perspective view of a relay control system according to an embodiment of the present invention.

Fig. 2 is a front view of a relay control system according to an embodiment of the present invention.

Fig. 3 is a perspective view of a bus bar according to an embodiment of the present invention.

Description of the reference numerals

1-a shell; 11. 11a, 11 b-terminals; 12a, 12 b-an upper surface; 13a, 13b, 13c, 13 d-flank; 14a, 14 b-housing fixation; 15. 15a, 15 b-a housing opening and closing part; 2. 2a, 2 b-bus bars; 21. 21a, 21 b-terminal connection portions; 22a, 22b, 23a, 23 b-bus bar fixing parts.

Detailed Description

The present invention is not limited to the following embodiments, and various configurations may be adopted.

The present specification describes the structure, operation, and effects of an embodiment of the present invention with reference to the drawings. Note that some reference numerals are not shown in the drawings. Further, the use of the relay control technique of the present invention is not limited to the vehicle-mounted components.

A relay control system according to an embodiment of the present invention (hereinafter, simply referred to as "relay control system") includes: a housing 1 containing at least an inductive load; a terminal 11 electrically connected to the inductive load and exposed to an upper surface 12 of the housing 1; and a bus bar 2 extending from the terminal 11 in this order along the upper surface 12 and the side surface 13 of the housing 1.

As illustrated in fig. 1 and 2, the relay control system includes: housing 1,

terminals

11a and 11b, and

bus bars

2a and 2 b.

The housing 1 contains at least the known or customary inductive loads which constitute the mechanical relay switch. In the description of the present specification, "inductive load" refers to an L load such as an excitation coil, a solenoid, or a contactor. The inductive load is a load that generates a voltage of opposite polarity (reverse voltage) according to a magnetic flux by utilizing a self-induction action when the voltage is cut off.

The housing 1 may be electrically connected to a known or conventional relay drive circuit for driving an inductive load contained in the housing 1. The housing 1 may be electrically connected to a known or conventional arithmetic circuit or the like for generating a signal for driving the relay as appropriate. In this case, a connection terminal for electrically connecting the relay driver circuit and the arithmetic circuit may be further provided.

The terminal 11 is exposed to the upper surface 12a or 12b and electrically connects the inductive load to the bus bar 2. The two terminals 11 can be exposed to the upper surfaces 12a and/or 12b as appropriate.

For example, the terminal 11 is electrically connected to the inductive load and the bus bar 2 by screwing a screw hole provided in the housing 1 and electrically connected to the inductive load and the terminal connection portion 21 of the bus bar 2. At this time, the fixing/fastening of the bus bar 2 at the terminal 11 can be performed by a conventional method within a range where the electrical connection between the inductive load and the bus bar 2 is formed.

The housing 1 can be seen to be exposed to the upper surface 12 and the side surface 13.

The two upper surfaces 12 (upper surface 12a and upper surface 12b) of the housing 1 are surfaces facing each other. Thus, either of the two upper surfaces 12 may be properly referred to as a lower surface.

Four side surfaces 13 (

side surfaces

13a, 13b, 13c, and 13d) of the case 1 are surfaces adjacent to the upper surface 12. It can be seen that the two upper surfaces 12 and the four side surfaces 13 constitute six faces of the case 1 which is substantially a rectangular parallelepiped.

As illustrated in fig. 1 and 2, the case 1 may be provided with

case fixing portions

14a and 14b for fixing and fastening the case 1 to a circuit board, an inner wall of a box, and the like as appropriate.

The housing 1 is provided with a housing opening/closing unit 15 for opening and closing the housing 1 as appropriate. As illustrated in fig. 2, the housing 1 includes a housing opening/closing unit 15, and the housing opening/closing unit 15 is used to open and close the housing 1 by a conventional method of alternately fixing and separating an upper portion and a lower portion of the housing 1.

As illustrated in fig. 1 to 3, the bus bar 2 is a conductor for electrically connecting to an inductive load and transmitting power to the outside by opening and closing the relay mechanism. In addition, the kind of the metal material constituting the bus bar 2 is not limited within a range in which conductivity is ensured.

The bus bar 2 according to one embodiment of the present invention is a flexible bus bar having flexibility. The "flexible bus bar" in the description of the present specification refers to, for example, a bus bar of which a part is covered with an insulator. The flexibility means that the shape is changed by the human force and the shape is maintained.

The bus bar 2 is provided with: terminal connecting

portions

21, 21a, 21b for fixing/fastening the bus bar 2 to the terminals 11; and bus

bar fixing portions

22a, 22b, 23a, 23b for fixing/fastening the bus bar 2 to a circuit board, a box inner wall, and the like.

Preferably, the bus bar 2 extends from the terminal 11 in the order of the upper surface 12 and the side surface 13. Specifically, the bus bar 2 first extends from the terminal connecting portion 21 along the upper surface 12. Next, the bus bar 2 is bent, for example, in a direction substantially orthogonal to the upper surface 12 so as to extend along any one of the side surfaces 13 adjacent to the upper surface 12. At this time, the bus bar 2 extends, for example, along the side surface 13. Finally, the bus bar 2 is bent again, for example, in a direction substantially orthogonal to the side surface 13 (a direction parallel to the upper surface 12), and extends while being away from the housing 1.

In the case where the relay control system includes two bus bars 2 (bus bars 2a and 2b), the first and second terminals 11 (

terminals

11a and 11b) are exposed to the upper surfaces 12a and/or 12b, respectively.

The first bus bar 2 (bus bar 2a) extends from the terminal 11a in the order of the upper surface 12 and the side surface 13. At this time, the upper surface 12 is the upper surface 12a or 12 b. In this case, the side surface 13 is a

side surface

13a, 13b, 13c, or 13 d.

Similarly, the second bus bar 2 (bus bar 2b) extends from the terminal 11b in the order of the upper surface 12 and the side surface 13. At this time, the upper surface 12 is the upper surface 12a or 12 b. In this case, the side surface 13 is a

side surface

13a, 13b, 13c, or 13 d.

Therefore, when the relay control system includes two bus bars 2 (bus bars 2a and 2b), it can be seen that the side surface 13 corresponding to the bus bar 2a and the side surface 13 corresponding to the bus bar 2b are opposed, adjacent, and the same surface.

The bus bar 2 of the relay control system in one embodiment of the present invention extends at least from the terminal 11 along the upper surface 12 and is bent to a direction substantially orthogonal to the upper surface 12.

The present invention can realize a relay control system capable of reducing noise due to an inductive load by using a bent bus bar 2 near a terminal 11.

Claims

1. A relay control system is provided with:

a housing containing at least an inductive load;

a terminal electrically connected to the inductive load and exposed to an upper surface of the housing; and

and a bus bar extending from the terminal along the upper surface and bent in a direction substantially orthogonal to the upper surface.

2. The relay control system according to claim 1,

the bus bar extends in the order of the upper surface and the side surface of the housing, and extends away from the housing in a direction parallel to the upper surface.

3. The relay control system according to claim 1 or 2,

the first and second terminals are exposed on the upper surface, respectively, the first bus bar extends from the first terminal along the upper surface and is bent in a direction substantially orthogonal to the upper surface, and the second bus bar extends from the second terminal along the upper surface and is bent in a direction substantially orthogonal to the upper surface.

4. The relay control system according to any one of claims 1 to 3,

the bus bar is a flexible bus bar having flexibility.