KR20050007083A - Apparatus for controlling battery of vehicle - Google Patents

Abstract

PURPOSE: A battery control device of a vehicle is provided to prevent the secondary accident from the electric short circuit by preventing supply of power from the battery to the electric components at the accident, and to supply power from the battery according to the ignition signal in normally starting the engine. CONSTITUTION: A battery control device for supplying or shutting off power from a battery(100) to an electric component(400) is composed of a collision detecting sensor(500) outputting the electric collision signal by detecting collision of the vehicle, a switch(200) inserted between the battery and the electric component and operated by the battery to electrically connect or disconnect the battery from the electric component, and a control unit(300) inserted between the battery and the switch to control the switch according to the collision signal from the collision detecting sensor. The switch comprises a bridge(210) connecting or insulating the electric contact point between the battery and the electric component, a spring(220) separating the bridge from the electric contact point, and an actuator(230) coupled to the bridge to connect the bridge to the electric contact point.

Description

Battery control device for vehicles {APPARATUS FOR CONTROLLING BATTERY OF VEHICLE}

The present invention relates to a vehicle battery control device, and more particularly, to a vehicle battery control device for supplying or cutting off power from a vehicle battery to a power load device.

Recently, as the number of electric and electronic equipment mounted on a vehicle increases, research is being conducted to use a 42V battery from a conventional 12V battery.

In the case of a hybrid vehicle using both an internal combustion engine and an electric motor, electricity is used at the start and at low speeds, and then switched to a gasoline system at acceleration or at constant speed. When it is used, it automatically switches back to the electric motor, so a large capacity battery is required.

However, when a large capacity battery is used, when the vehicle is overturned due to an impact from the outside, power is continuously supplied from the battery to the electrical equipment, which increases the risk of short and secondary fires. There is a problem.

Accordingly, the present invention prevents battery power from being supplied to power load devices such as various electrical appliances in the event of a vehicle accident, and prevents secondary disasters such as fire caused by electrical short and prevents fire by battery disconnection. It is an object of the present invention to provide a battery control device capable of resuming battery power by an ignition signal generated by a driver's start operation when there is no problem in driving afterwards.

1 is a block diagram of a battery controller according to an embodiment of the present invention; And

2 is an operation flowchart of a battery control apparatus according to an embodiment of the present invention.

The present invention is to achieve the above object, in the vehicle battery control device for supplying / blocking control between a battery and a power load device driven by receiving power from the battery, electric collision by detecting a collision of the vehicle A collision detection sensor that outputs a signal; A switch operated by the battery and interposed between the battery and the power load device to electrically connect or disconnect the battery and the power load device; And a controller interposed between the battery and the switch to control the switch based on the collision signal output from the collision detection sensor.

The switch may further include a bridge connecting / blocking electrical contacts between the battery and the power load device; An actuator connected to the bridge and operated by a power supplied from the battery to connect the bridge to the electrical contact; And a spring connected to the bridge to separate the bridge from the electrical contact when the actuator is inoperative.

Preferably, the control unit cuts off the power supplied from the battery to the actuator when the electric collision signal detected by the collision detection sensor is greater than or equal to a predetermined size.

More preferably, the battery controller further includes an ignition signal detector, and when the ignition key on signal is detected and the electric collision signal detected by the collision detection sensor is greater than or equal to a predetermined size, the battery controller is supplied from the battery to the actuator. Shut off the power supply.

Preferably, the battery controller is a switch signal from the ignition off signal to the ignition on signal is detected by the ignition signal detection unit after the actuator power is cut off, when the collision signal is not detected by the collision detection sensor Supply the actuator power.

In addition, the power control device further comprises a manual switch to supply and cut off power from the battery to the power load device.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the following embodiments, the same components are denoted by the same numbers.

1 is a block diagram of a battery control apparatus according to an embodiment of the present invention.

The switch 200 is interposed between the battery 100 and the power load device 400 driven by the power supplied from the battery 100.

The power load device 400 includes, for example, a power consumption device such as a drive motor, an audio system, a navigation system, a lamp, and the like of a hybrid vehicle. However, power load devices that must be operated for safety in a vehicle accident, such as airbag devices, mobile telematics systems (MTS), emergency ramps, etc., do not go through the switch 200, but directly with the battery 100. It is preferred to be connected.

The switch 200 is mounted on one side of the bridge 210 and the bridge 210 for connecting or disconnecting the electrical contact 240 between the battery 100 and the power load device 400 to the predetermined distance to the bridge 210. A spring 220 for separating the bridge 210 from the electrical contact 240 by acting attraction, and an actuator 230 connected with the bridge 210 to connect the bridge 210 to the electrical contact 240 during operation. Include.

The spring 220 imposes a predetermined attraction force on the bridge 210 in a direction to separate the bridge 210 from the electrical contact 240, while the actuator 230 has a coil 234 and an iron core 231 therein. When the power is supplied to the actuator 230, a predetermined attraction force acts on the iron core 231 by a current flowing in the coil 234 to connect the bridge 210 to the electrical contact 240. The attraction force for the bridge 210 of the actuator 230 should be set greater than the attraction force for the bridge 210 of the spring 220.

Power supplied to the coil 234 of the actuator 230 is applied from the battery 100. A control unit 300 is interposed between the actuator 230 and the battery 100 to perform a switching operation of applying or cutting off the power of the battery to the actuator.

The controller 300 controls power supply from the battery 100 to the actuator 230 based on the signals input from the collision detection sensor 500 and the ignition signal detector 600.

The collision detection sensor 500 detects a collision of the vehicle and outputs an electric collision signal, and the ignition signal detection unit 600 detects whether the ignition is on or off as an electrical signal.

The ignition signal detector 600 and the collision detection sensor 500 may be directly connected to the battery 100 so that power is always supplied regardless of the operation of the switch 200.

A manual switch 700 may be interposed between the battery 100 and the controller 300 to forcibly block power supply to the actuator 230 by a driver's manipulation. In this embodiment, the manual switch 700 is included, but it may be omitted according to a specific embodiment.

The manual switch 700 is operated by the occupant of the vehicle, and when the driving of the vehicle is stopped for a long time, the manual switch 700 may be operated to forcibly stop the power supply to the actuator 230.

2 is a flowchart illustrating a battery power control operation according to the present invention.

Hereinafter, the operation of the embodiment will be described with reference to FIG. 2.

When the vehicle starts to run, the ignition signal detector 600 detects the ignition signal. When the detected ignition signal is an ignition on signal, the controller 300 applies power from the battery 100 to the actuator 230. When the power supplied from the battery 100 flows to the coil 234 of the actuator 230, the iron core 231 located inside is lowered, the bridge 210 and the electrical contact 240 connected to the iron wire 231 is Connected, and thus power is supplied from the battery 100 to the power load device 400. The supplied power drives the vehicle power load device 400 (S220).

When the vehicle power load device 400 is driven, the collision detection sensor detects a vehicle collision signal (S250), and when the collision signal detected from the collision detection sensor 500 is greater than or equal to a predetermined size (S230), The controller 300 cuts off the power supplied from the battery 100 to the actuator 230 (S240).

Preferably, the magnitude of the collision signal may be calculated by measuring the voltage of the collision signal.

When the power supplied to the actuator 230 is cut off, the power flowing to the coil 234 is cut off, the bridge 210 is separated from the electrical contact 240 by the attraction force of the spring 220, from the battery 100 Power supplied to the power load device 400 is cut off.

After the power supply is cut off, the ignition signal detection unit 600 detects an ignition signal (S250), and the collision detection sensor 500 detects a collision signal in front of the vehicle (S260).

After the power supply is cut off, when the switching signal from the ignition off signal to the ignition on signal is detected by the ignition signal detection unit 600, and the collision signal is no longer detected by the collision detection sensor 500 ( S270), the controller 300 applies power from the battery 100 to the actuator 230, and when power is supplied to the coil 234, the iron core 231 of the actuator 230 moves, and the bridge 210 ) Is connected to the contact point 240 (S280). That is, when the driver switches the ignition key from the off state to the on state when a disaster such as a secondary fire of the vehicle is prevented by a power cut after the accident and no further collision signal is detected, the power from the battery 100 Power supply to the load device 400 can be simply resumed.

According to the power supply device and method described above, it is possible to prevent secondary disasters such as a fire caused by an electrical short by shutting off the battery power when a vehicle accident occurs, and there is no problem in operation after preventing the fire caused by the battery cutoff. In this case, the ignition key can be operated to reapply the battery power.

Claims (5)

In a vehicle battery control device for supplying / blocking power between a battery and a power load device driven by receiving power from the battery, A collision detection sensor that detects a collision of the vehicle and outputs an electric collision signal; A switch operated by the battery and interposed between the battery and the power load device to electrically connect or disconnect the battery and the power load device; And A control unit interposed between the battery and the switch to control the switch based on the collision signal output from the collision detection sensor, The switch, A bridge connecting / blocking electrical contacts between the battery and the power load device; An actuator connected to the bridge and operated by a power supplied from the battery to connect the bridge to the electrical contact; And And a spring coupled to the bridge to separate the bridge from the electrical contact when the actuator is inoperative. In claim 1, And the controller cuts off the power supplied from the battery to the actuator when the electric collision signal detected by the collision detection sensor is greater than or equal to a predetermined size. In claim 2, The battery control device further includes an ignition signal detector, And when an ignition key on signal is detected and the electric collision signal detected by the collision detection sensor is greater than or equal to a predetermined size, the vehicle battery control device which cuts off the power supplied from the battery to the actuator. In claim 3, The battery control device after the actuator power off, When the switching signal from the ignition off signal to the ignition on signal is detected by the ignition signal detection unit, and the collision signal is not detected by the collision detection sensor, the vehicle battery control characterized in that for supplying power to the actuator from a battery. Device. The method according to any one of claims 1 to 4, And the battery control device further comprises a manual switch to supply and cut off power from the battery to the power load device.