KR101550317B1 - Controlling Device of High-Voltage Junction Box for Electric Vehicle - Google Patents
Controlling Device of High-Voltage Junction Box for Electric Vehicle Download PDFInfo
- Publication number
- KR101550317B1 KR101550317B1 KR1020140092555A KR20140092555A KR101550317B1 KR 101550317 B1 KR101550317 B1 KR 101550317B1 KR 1020140092555 A KR1020140092555 A KR 1020140092555A KR 20140092555 A KR20140092555 A KR 20140092555A KR 101550317 B1 KR101550317 B1 KR 101550317B1
- Authority
- KR
- South Korea
- Prior art keywords
- power
- cover
- sub
- junction box
- relay
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0239—Electronic boxes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
Abstract
An object of the present invention is to provide a high voltage junction box control device for an electric vehicle, which can easily replace a fuse only by disassembling the sub-cover, and to automatically cut off power when the sub-cover is disassembled.
To this end, the present invention comprises a main block 20 including a power distribution device for distributing power supplied from a power supply device to each electric device of the vehicle, and a main cover 20 And a plurality of connectors (21) provided on a side surface of the main block (20) and into which cables connected to respective electric devices of the vehicle are inserted. The high voltage junction box of an electric vehicle A sub cover 31 including a bus bar 33 having terminals is detachably coupled to an upper portion of the printed circuit board 22 and a printed circuit board 22 built in the main block 20, A fork 23 corresponding to the terminal shape of the sub cover 31 is provided so as to be coupled to the terminal of the bus bar 33. By disassembling the sub cover 31, (23), the power is automatically shut off, When the sub-group, the power to the decomposition of the cover 31 is shut off or the problem with the relay, to sense this signal is characterized by transmitting to the outside by the CAN communication.
Description
The present invention relates to a high-voltage junction box controller for an electric vehicle, and more particularly, to a high-voltage junction box of an electric vehicle or a hybrid vehicle, which further includes a sub-cover to easily replace the fuse by disassembling the sub- It is possible to prevent the electric shock due to the high voltage by automatically cutting off the power when the sub cover is disassembled and the state of interlocking of each connector can be grasped independently in the power distributing device, To a high voltage junction box control device of an electric vehicle capable of transmitting the connection state of each connector to the outside.
BACKGROUND ART Automobiles are equipped with a number of electrical devices that are powered by electricity.
The automobile also has a plurality of relays and fuses for distributing the power supplied from the power supply unit to each electric device of the vehicle.
However, if the relays and fuses are installed in a dispersed manner, the structure becomes complicated and control becomes difficult.
Accordingly, a plurality of relays and fuses are collectively arranged in one box. Such a box is generally called a junction box.
The junction box includes a power distribution device for distributing electric power to a plurality of electric devices provided in an automobile. For this purpose, a printed circuit board (PCB) and a connector (connector) And the like.
The connector may be divided into a power connector to which power is connected and a distribution connector for transmitting the power distributed from the PCB to each electric device of the vehicle.
A bus-bar is usually connected to the PCB to electrically connect each relay provided in the junction box to a fuse or the like.
On the other hand, unlike a general automobile driven by an engine, an electric vehicle is driven only by an electric motor, so a high voltage is required.
In addition, when a hybrid vehicle having both an engine and an electric motor is driven only by a motor, a high voltage is used.
Accordingly, the junction box of an electric vehicle or a hybrid electric vehicle (collectively referred to as an electric vehicle) differs in structure from a junction box of a general automobile in which a low voltage is used.
Fig. 1 shows an example of a high-voltage junction box of such an electric vehicle.
However, the conventional high voltage junction box as shown in FIG. 1 has a problem that the
Further, when disassembling the
In other words, electric vehicles use a high voltage (currently, about 330 V is mainly used), so there is a high risk of electric shock during maintenance, and it is pointed out that it is difficult to easily determine whether or not the power is shut off during maintenance of the junction box .
In addition, the conventional high-voltage junction box has a problem that its function is limited because the high-voltage relay module is merely composed of relay assemblies.
Since the high voltage interlock (HVIL) function applied to the conventional high voltage junction box is controlled by a separate battery management system (BMS) as shown in FIG. 6A, There is a problem that it is difficult to individually detect the abnormality of the sensor.
That is, in the conventional high voltage interlock function, since the interlock connections of the plurality of connectors are connected to each other in a serial manner as shown in FIG. 6A, it is possible to detect that an abnormality occurs in the connector, It is impossible to detect which connector has failed.
Further, according to the conventional high-voltage junction box, when an abnormal signal is detected in a relay or the like, it is impossible to grasp whether this is due to an abnormal operation of the relay itself or a problem in control of the battery management system (BMS).
SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the prior art described above. In the case of replacing only a fuse in a high-voltage junction box, the fuse can be easily replaced only by disassembling the sub- There is a purpose.
Another object of the present invention is to prevent an electric shock due to a high voltage by automatically shutting off the power when disassembling the sub cover of the high voltage junction box.
Another object of the present invention is to minimize the damage due to the surge phenomenon by discharging surplus power remaining in the power distribution apparatus when the sub cover is opened or the relay is turned off.
It is still another object of the present invention to improve the performance of a relay module by adding a safety function and a failure diagnosis function to a high voltage relay module and solve problems with external communication.
It is still another object of the present invention to independently implement an interlock function in each connector and sub cover.
It is still another object of the present invention to independently detect the interlocking state of each connector and sub cover in the power distributing device and to transmit it to the outside by CAN communication.
It is another object of the present invention to improve the convenience of maintenance by making it possible to distinguish between an abnormality of the power distribution device and an abnormality of the external controller.
It is still another object of the present invention to prevent the temperature inside the junction box from rising due to a high voltage.
According to an aspect of the present invention, there is provided a power supply apparatus including a main block including a power distribution device for distributing power supplied from a power supply device to each electric apparatus of a vehicle, a main cover coupled to an upper portion of the main block, A high-voltage junction box of an electric vehicle, comprising: a plurality of connectors provided on a side surface of a main block, each of the plurality of connectors being inserted with a cable connected to each electric device of the vehicle, the bus bar including terminals on the main cover And a fork corresponding to a terminal shape of the sub cover is provided on one side of a printed circuit board built in the main block so as to be coupled with the terminal of the bus bar, The power is automatically shut off when the terminals of the bus bar are separated from the fork, And when a trouble or a problem occurs in the relay, it is detected and transmitted to the outside by the CAN communication.
In addition, the sub cover is provided with an interlock function for detecting a terminal of the bus bar and a fork connection state.
In addition, each of the connectors is provided with an interlock function for detecting the connection state with the power distributing device.
Further, the present invention is characterized by further comprising a discharge relay for discharging surplus electric power when the power is cut off due to decomposition of the sub-cover or when the relay is turned off.
The apparatus further includes a temperature sensor for sensing a temperature in the junction box.
According to the present invention, when replacing the fuse in the high-voltage junction box, the fuse can be easily replaced after disassembling only the sub-cover without disassembling the entire main cover.
In addition, disassembling the sub-cover of the high-voltage junction box automatically cuts off the power supply, thereby preventing the risk of electric shock.
Further, when the sub cover is opened or the relay is turned off, surplus power remaining in the power distributing device is discharged, so that the damage due to the surge phenomenon can be minimized.
In addition, the safety function and the failure diagnosis function are added to the high voltage relay module, thereby improving the performance of the relay module and improving the problem with external communication.
In addition, since each connector and the sub cover are provided with an independent interlock function, it is possible to easily and quickly detect which part has caused an abnormality.
In addition, the interlocking state of each connector and the sub cover can be independently detected in the power distributing device, so that the convenience of maintenance can be improved.
In addition, there is an effect that a problem caused by a temperature rise due to a high voltage can be prevented in advance.
1 is a perspective view of a conventional high voltage junction box;
2 is a perspective view of a high voltage junction box according to the present invention;
FIG. 3 is an exploded perspective view illustrating a process of separating a sub-cover in a high-voltage junction box according to the present invention. FIG.
4 is a plan view showing a state in which a main cover is removed from a high-voltage junction box according to the present invention.
5 is a circuit diagram showing a discharge processing method of a high-voltage junction box according to the present invention.
FIG. 6 is a conceptual diagram for explaining a high voltage interlock system, FIG. 6A is a conventional high voltage interlock system, and FIG. 6B is a conceptual diagram illustrating a high voltage interlock system according to the present invention.
7 is a flow chart illustrating a process of replacing a fuse in a high-voltage junction box according to the present invention.
8 is a flow chart illustrating the operation of a power distribution device in a high voltage junction box according to the present invention.
Hereinafter, a preferred embodiment of a high-voltage junction box of an electric vehicle according to the present invention will be described with reference to FIGS. 2 to 8. FIG.
2 to 4, a high-voltage junction box of an electric vehicle according to the present invention includes a
A
Accordingly, in the case of replacing only the
A
With the above structure, when the terminal of the
Accordingly, the risk of electric shock can be prevented without separately checking the power supply.
3 shows that a terminal is provided on the
In addition, when power is cut off due to disassembly of the
Since the CAN communication (Controller Area Network) is a well-known communication standard designed for the microcontroller or devices to communicate with each other without a host computer, a detailed description thereof will be omitted.
Accordingly, the user can easily grasp whether or not the power source is shut off and whether the relay is abnormal.
The
That is, when the connection state between the terminal and the
Each of the
As a result, it is possible to easily grasp which connector among the plurality of connectors has occurred.
In the conventional high-voltage interlock system, as shown in FIG. 6A, the connectors are connected in a serial manner, and the external battery management system (BMS) 60 senses the connectors.
Accordingly, in the external battery management system, only the abnormality of the connector can be detected, and it is not possible to grasp which connector among the plurality of connectors has caused the abnormality.
However, according to the high-voltage interlock system of the present invention, as shown in FIG. 6B, the connection state of each connector can be independently sensed, so that it is possible to easily grasp which connector has caused an error.
4 and 5, the present invention includes a
Surge phenomenon can be prevented by the
Further, the present invention preferably further includes a temperature sensor (not shown) for sensing the temperature in the junction box.
It is possible to prevent the internal temperature of the high-voltage junction box from being overheated by the temperature sensor, thereby improving the stability of operation.
Hereinafter, a process of replacing a fuse according to the present invention will be described with reference to FIG.
First, turn off the vehicle and confirm via CAN communication whether the high-voltage relay is off.
Next, the connection state of the high voltage connector is checked. If the high voltage connector is connected, the connector is removed, and if the high voltage connector is not connected, the
The
After replacing the fuse (40), reconnect the disconnected connector and check the connection information of the high-voltage connector.
Finally, when the interlock function confirms that the high voltage connector is connected, the replacement of the fuse is completed.
Next, an operation state in the power distributing apparatus will be described with reference to Fig.
First, the high voltage connection state of the connector and the sub cover is checked. If the high voltage connection state is not confirmed, unauthorized information is transmitted to the CAN communication and displayed. Then re-check the program and reset.
If the high-voltage connection of the connector and sub-cover is confirmed, the approval information is transmitted via the CAN communication and the power distribution unit is prepared.
Then, it receives the information of the battery management system (BMS) through the CAN information and receives the operation of the relay.
Then, it checks the relay driving information and confirms whether it is driven through actual sensing. If it is not confirmed whether it is driven, the unauthorized person information is transmitted through CAN communication.
Then, if the off state of the relay is confirmed through the CAN message and the off state is confirmed, the cluster is displayed in the cluster. If the off state is not confirmed, the discharge relay is turned on and displayed.
On the other hand, if it is confirmed whether the vehicle is driven through actual sensing by checking relay driving information, the relay operation is detected and a temperature sensing loop is executed.
If the relay operation is not detected, the information of the battery management system is received via the CAN information, and the operation returns to the step of receiving the operation of the relay.
According to the above method, safety can be improved by efficiently controlling the power supply of the entire vehicle, and the failure of the internal relay can be efficiently diagnosed.
In addition, since it is possible to prevent an electric shock accident that may occur when the cover is opened and the fuse is replaced, it is possible to solve the safety problem due to the use of the high voltage.
In addition, by adding control functions necessary for relay fault diagnosis and power control in the power distribution unit, it is possible to solve the problems that may occur when exchanging information with external communication.
In addition, the interlocking state of each connector and sub cover can be independently detected in the power distributing device.
In addition, after receiving the relay operation command message via the CAN communication, the power distribution apparatus is operated and the operation state of the relay is sensed, thereby confirming whether or not the relay is actually operated.
It is also possible to check whether or not the relay control is possible by checking the power source for driving the relay.
Accordingly, when an abnormal signal is generated, it is easy to grasp whether it is an internal problem of the relay control or a problem of the external controller, and transmit it to the external controller.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.
20: main block 21: connector,
22: PCB (Printed Circuit Board) 23: Fork
25: positive polarity member 26: - polar member
28: Discharge Relay 30: Main Cover (Main Cover)
31: Sub cover 32: Bolt
33: Bus Bar 40: Fuse
50: Power distribution device
60: Battery Management System (BMS)
Claims (5)
A sub cover (31) including a bus bar (33) having a terminal is detachably coupled to an upper portion of the main cover (30)
A fork 23 corresponding to the terminal shape of the sub cover 31 is provided on one side of the printed circuit board 22 built in the main block 20 so that the terminals of the bus bar 33 And,
When the terminal of the bus bar 33 is detached from the fork 23 by the disassembly of the sub cover 31, the power is automatically shut off,
Wherein when the power is cut off due to disassembly of the sub cover (31) or a problem occurs in the relay, the signal is sensed and transmitted to the outside by CAN communication.
Wherein the sub cover (31) is provided with an interlock function for detecting a connection state of the terminal of the bus bar (33) and the fork (23).
And an interlock function for detecting a connection state of the connector (21) with the power distribution device (50) are independently provided.
Further comprising a discharge relay (28) for discharging surplus electric power when the power is cut off or the relay is turned off by disassembling the sub cover (31).
Further comprising a temperature sensor for sensing a temperature in the junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140092555A KR101550317B1 (en) | 2014-07-22 | 2014-07-22 | Controlling Device of High-Voltage Junction Box for Electric Vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140092555A KR101550317B1 (en) | 2014-07-22 | 2014-07-22 | Controlling Device of High-Voltage Junction Box for Electric Vehicle |
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| Publication Number | Publication Date |
|---|---|
| KR101550317B1 true KR101550317B1 (en) | 2015-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140092555A KR101550317B1 (en) | 2014-07-22 | 2014-07-22 | Controlling Device of High-Voltage Junction Box for Electric Vehicle |
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| Country | Link |
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| KR (1) | KR101550317B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069610A (en) * | 2017-01-23 | 2017-08-18 | 深圳市品川能源电气有限公司 | A kind of high-tension distribution box for electric vehicle |
| KR20220094348A (en) * | 2020-12-29 | 2022-07-06 | 쌍용자동차 주식회사 | Interlock device of high voltage junction box using switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119760A1 (en) | 2011-11-14 | 2013-05-16 | Honda Motor Co., Ltd. | Electric vehicular power controller support structure and electric vehicle |
-
2014
- 2014-07-22 KR KR1020140092555A patent/KR101550317B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130119760A1 (en) | 2011-11-14 | 2013-05-16 | Honda Motor Co., Ltd. | Electric vehicular power controller support structure and electric vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069610A (en) * | 2017-01-23 | 2017-08-18 | 深圳市品川能源电气有限公司 | A kind of high-tension distribution box for electric vehicle |
| KR20220094348A (en) * | 2020-12-29 | 2022-07-06 | 쌍용자동차 주식회사 | Interlock device of high voltage junction box using switch |
| KR102460150B1 (en) * | 2020-12-29 | 2022-10-31 | 쌍용자동차 주식회사 | Interlock device of high voltage junction box using switch |
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