KR101134002B1

KR101134002B1 - High Voltage Junction Box which has High Woltage Relay For Automotive Vehicles

Info

Publication number: KR101134002B1
Application number: KR20100079483A
Authority: KR
Inventors: 백상기
Original assignee: 영화테크(주)
Priority date: 2010-08-17
Filing date: 2010-08-17
Publication date: 2012-04-05
Also published as: KR20120016939A

Abstract

PURPOSE: A vehicle junction box having a high-voltage relay is provided to perform a repairing a high-voltage control circuit in the state that a high-voltage cable is connected to the upper part of the main block because a cover is connected or disconnected to the main block. CONSTITUTION: A vehicle junction box having a high-voltage relay comprises a main block(11), a high-voltage relay(12), a bus bar(13), a relay cover(15), and a cover(14). A relay fixing unit is installed in the upper central part of the main block. The high-voltage relay is inserted into the relay fixing unit of the main block. The high-voltage relay connects and cuts off power by an external signal. The bus bar is electrically connected to a cable connecting unit(k). The relay cover surrounds the upper and side surfaces of the high-voltage relay. The cover covers the upper and side surfaces of the main block, thereby protecting a high-voltage control circuit and cable connection part at the same time.

Description

High Voltage Junction Box which has High Woltage Relay For Automotive Vehicles}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a junction box for a vehicle incorporating a high voltage relay used in a power control system for a hybrid vehicle or an electric vehicle in which an inverter controls a driving motor using a power supplied from a vehicle battery. Install both the control circuit and the high voltage cable connection, but connect the high voltage relay and the high voltage cable located at different heights by using the three-dimensional bus bar, so that the high voltage control circuit and the cable connection are both located inside the cover. The present invention relates to a junction box for a vehicle incorporating a high voltage relay which reduces the risk of a safety accident.

In general, an electric vehicle driven by electricity and a hybrid vehicle selectively using electricity and fuel include an electric drive system such as a high voltage battery for power supply, an inverter for control, and a drive motor for driving a vehicle. Doing.

In addition, the electric vehicle or hybrid vehicle is provided with a high voltage junction box to supply or cut off the power of the high voltage battery to the vehicle,

The high voltage junction box has a function of applying a high voltage power when the operation of the inverter is required, and cutting off the high voltage power when the inverter is not used.

One example of such a system is shown in FIG. 1.

1 is a block diagram schematically showing a general high-voltage control device for a hybrid vehicle, a battery module including a high voltage battery and a cutoff switch for shutting off a power output, a vehicle power supply means an electric load of a vehicle including a driving motor, and A high voltage junction box for connecting a battery of a battery module and a vehicle power supply unit to turn on / off a power supply is shown.

In the conventional hybrid vehicle high voltage control device configured as described above, the high voltage junction box performs a function of connecting or disconnecting the high voltage power supplied from the high voltage battery to the vehicle power supply unit.

Therefore, a plurality of power cables are connected to the high voltage junction box for power connection with the high voltage battery and the vehicle power supply unit.

However, the high voltage junction box used in the conventional high voltage control device for a vehicle is not only complicated in power distribution structure because a plurality of cables are connected for power distribution, thereby increasing the installation space of the high voltage junction box, There is a problem that the part to which the cable is connected is exposed to the outside.

Accordingly, when the high voltage cable is damaged by an external shock, there is a risk of a short circuit and thereby a safety accident such as an electric shock of a driver.

The present invention has been made to solve the above-mentioned problems, by installing the high voltage relay and the cable connection on the upper surface of the main block, but by connecting the high voltage relay and the high voltage cable located at different heights using a three-dimensional bus bar, Both the high voltage control circuit and the cable connection are located inside the cover to provide sufficient protection from external shocks, and the vehicle junction box with a high voltage relay built in to reduce the size and increase the utilization of the vehicle interior space. The purpose is to provide.

That is, the present invention, while reducing the size of the junction box through a more efficient space configuration for the connection structure of the high voltage relay and the high voltage cable implemented in the existing high voltage junction box can securely protect the connection portion of the high voltage control component and high voltage cable. The purpose is to make it.

In addition, the present invention can safely protect the high voltage control circuit installed on the upper surface of the main block, in particular, when connecting or removing the high voltage cable high voltage control circuit is exposed to the outside to prevent damage to the high voltage control component high voltage The purpose is to provide a junction box for a vehicle with a built-in relay.

In addition, an object of the present invention is to provide a junction box for a vehicle incorporating a high voltage relay in which a high voltage cable is installed so that a safety accident due to a short circuit does not occur even if the high voltage cable is separated from the main block.

In addition, an object of the present invention is to provide a junction box for a vehicle incorporating a high-voltage relay to check the control current of the junction box without opening the cover coupled to the upper side of the main block.

The present invention for achieving the above object, in the junction box for a vehicle having a high-voltage relay for controlling the power supplied to a high-voltage system of the vehicle receives power from a large-capacity battery mounted inside the electric vehicle or hybrid vehicle, the upper surface A main block provided with a relay fixing part in the center and fixed to the vehicle, a high voltage relay inserted into the relay fixing part of the main block and capable of connecting or disconnecting power by an external signal, an upper surface of the high voltage relay and the main block A bus bar formed in a three-dimensional structure so as to electrically connect the cable connection part provided at the upper edge of the cover, a relay cover formed of a structure surrounding the top and side surfaces of the high voltage relay, and the top and side surfaces of the main block to cover the high voltage relay. Including high voltage control circuit It characterized in that it comprises a cover for protecting the cable connection at the same time.

Further, according to the junction box for a vehicle incorporating the high voltage relay of the present invention, the cover is detachably coupled to the main block.

In addition, according to the junction box for a vehicle incorporating the high-voltage relay of the present invention, the high-voltage cable is characterized in that arranged on the one side of the cable fixing portion, only the positive polarity high voltage cable is connected to the other side, only the cathode high voltage cable is connected to the other side. do.

In addition, according to the junction box for a vehicle incorporating a high voltage relay of the present invention, the bus bar is installed so as to pass through the current sensor installed in the high voltage control circuit to detect the control current of the junction box through the bus bar. do.

The junction box for a vehicle incorporating the high voltage relay of the present invention connects a cable connection portion between the upper surface of the high voltage relay and the upper surface of the main block, which is inserted into the main block using a three-dimensional bus bar, and protects them with a relay cover. The cover coupled to the cover protects the internal high voltage control parts and the cable connection, thereby effectively connecting and managing the high voltage power supply.

In addition, according to the junction box for a vehicle incorporating a high voltage relay of the present invention, a high voltage control circuit such as a high voltage relay and a high voltage fuse is secured by a cover coupled to an upper side of the main block, and the cover is coupled or separated from the main block. Since the cover and the relay cover are separated while the high voltage cable is connected to the upper surface of the main block, the high voltage control circuit including the high voltage fuse can be maintained.

In addition, according to the junction box for a vehicle incorporating a high voltage relay of the present invention, since high voltage cables having the same polarity are disposed on both sides of the relay fixing part, safety can be maintained even when the high voltage cable is separated. .

In addition, according to the junction box for a vehicle incorporating the high voltage relay of the present invention, since the bus bar passes through the current sensor connected to the high voltage control circuit, the control current of the junction box can be detected through the bus bar exposed to the outside without removing the cover. It has an effect.

1 is a block diagram schematically showing a high voltage controller for a typical hybrid vehicle.
Figure 2 is a block diagram showing a junction box for a vehicle incorporating a high voltage relay according to the present invention.
3 is a plan view illustrating a coupling structure of a bus bar and a relay in a junction box for a vehicle incorporating a high voltage relay according to the present invention;
Figure 4 is a plan view of the relay cover is coupled to the junction box for a vehicle incorporating a high voltage relay of the present invention.
5 is a reference diagram illustrating a state in which a cover is removed from a junction box for a vehicle incorporating a high voltage relay of the present invention and a high voltage cable is connected thereto.
Figure 6 is a reference diagram showing the arrangement of the high voltage cable in a junction box for a vehicle incorporating a high voltage relay of the present invention.
7 is a configuration diagram showing another example of a junction box for a vehicle incorporating a high voltage relay of the present invention.

Hereinafter, a junction box for a vehicle incorporating a high voltage relay according to the present invention will be described with reference to the accompanying drawings.

A vehicle junction box 10 incorporating a high voltage relay according to the present invention is a device for controlling power supplied to a high voltage system of a vehicle by receiving power from a large capacity battery mounted inside an electric vehicle or a hybrid vehicle. The relay fixing part 11 'is provided in the main block 11 fixed to the vehicle, and the relay fixing part 11' of the main block 11 is inserted and installed to connect or cut off power by an external signal. A high voltage relay 12 and a bus bar 13 formed in a three-dimensional structure such that an upper surface of the high voltage relay 12 and a cable connection portion k provided at an upper surface edge of the main block 11 are electrically connected to each other; Relay cover 15 having a structure surrounding the top and side surfaces of the high voltage relay 12, and the high voltage relay 12 by covering the top and side surfaces of the main block (11) It comprises a cover 14 for simultaneously protecting the high voltage control circuit and the cable connection.

Here, the cover 14 is preferably detachably coupled to the upper side of the main block (11).

The cover 14 coupled to the upper side of the main block 11 is made of a high voltage relay 12 and a high voltage fuse, so that the high voltage control circuit installed on the upper surface of the main block 11 can be safely protected. In order to maintain the high voltage control circuit including the high voltage fuse by separating the cover 14 and the relay cover 15 while the high voltage cable 16 is connected to the upper surface of the main block 11.

In addition, the high voltage cable 16 is connected to the bus bar 13 by a cable connecting pin 18 at a cable connecting portion k provided at an upper edge of the main block 11, and the cable connecting pin. 18 is installed through the main block 11 and the bus bar 13 at the same time.

In addition, the high voltage cable 16 is connected only to the positive polarity high voltage cable 16a on one side, and to the negative polarity high voltage cable 16b on the other side, centering on the relay fixing part 11 'of the main block 11. It is preferable to arrange as much as possible.

As such, since high voltage cables 16a and 16b of the same polarity are disposed on both sides of the relay fixing part 11 'into which the high voltage relay 12 is inserted, the high voltage cable 16 is separated. Even in this case, the positive voltage cable 16a and the negative voltage cable 16b are blocked by the high voltage relay 12. Accordingly, safety accidents such as a short circuit can be prevented and the driver can be protected from dangers such as electric shock.

On the other hand, the bus bar 13 is preferably installed to penetrate the current sensor 17 installed in the high voltage control circuit.

This is to detect the control current of the junction box 10 through the bus bar 13. Therefore, it is possible to detect the control current of the junction box 10 through the bus bar 13 exposed to the outside without removing the cover 14, thereby increasing the convenience of use.

As mentioned above, the preferred embodiment of the present invention has been described as an example, and the present invention is not limited to the above-described embodiment. Those skilled in the art will appreciate that various modifications and changes can be made within the technical spirit of the present invention.

10: junction box
11: Main Block
11 ': Relay fixing part
12: high voltage relay
13: Bus Bar
14: Cover
15: Relay Cover
16: high voltage cable
16a: high voltage cable for positive pole
16b: High Voltage Cables for Cathode
17: current sensor
18: Cable connecting pin
k: cable connection

Claims

In the junction box for a vehicle (10) having a high-voltage relay for controlling the power supplied to the high-voltage system of the vehicle by receiving power from a large capacity battery mounted inside the electric vehicle or hybrid vehicle,
The relay fixing portion 11 'is provided at the center of the upper surface and is inserted into the main block 11 fixed to the vehicle, and the relay fixing portion 11' of the main block 11 is connected to or connected to a power source by an external signal. Bus bar 13 formed in a three-dimensional structure so that the high voltage relay 12 that can be cut off, the cable connection portion (k) provided on the upper surface of the high voltage relay 12 and the upper edge of the main block 11 And a high voltage control circuit and a cable connection part including the relay cover 15 having a structure surrounding the top and side surfaces of the high voltage relay, and the high voltage relay 12 by covering the top and side surfaces of the main block 11. Junction box for a vehicle with a built-in high voltage relay, characterized in that it comprises a cover 14 to protect at the same time.

The method of claim 1,
The cover 14 is a vehicle junction box with a built-in high voltage relay, characterized in that detachably coupled to the main block (11).

The method of claim 1,
It characterized in that it further comprises a high voltage cable 16 which is arranged so that only the positive high voltage cable 16a is connected to one side and the negative high voltage cable 16b is connected to the other side of the relay fixing part 11 '. Automotive junction box with high voltage relay.

The method of claim 1,
The high voltage, characterized in that the bus bar 13 is installed to penetrate the current sensor 17 installed in the high voltage control circuit to detect the control current of the junction box 10 through the bus bar (13). Automotive junction box with built-in relay.