KR100783927B1 - Apparatus for discharging harmful gases and fine dusts of battery in hybrid electric vehicle - Google Patents

Abstract

An apparatus for exhausting the battery harmful gas and dust of a hybrid electric vehicle is provided to prevent the additional heat build-up or ignition and to remove the harmful gas and duct generated from a battery. An apparatus for exhausting the battery harmful gas and dust of a hybrid electric vehicle comprises an air conditioning device(10) which provides cooling air; a cooling air duct(31) which is connected with the cooling duct of a battery cooling system from the air conditioning device to guide the cooling air to the battery; a duct opening/closing unit(32) which is installed at the cooling air outlet part of the cooling air duct; an outlet duct which is connected with external vehicle from the cooling duct to exhaust the harmful gas and dust generated from a battery together with cooling water; a harmful gas and dust detection part(50) which is installed at the surroundings of the battery to detect the harmful gas and dust generated from a battery; and a control part(60) which operates and opens/closes the duct opening/closing unit according to the condition.

Description

Apparatus for discharging harmful gases and fine dusts of battery in hybrid electric vehicle}

1 is a configuration diagram showing an example of a conventional hybrid electric vehicle,

2 is a block diagram of an automatic discharge device according to the present invention,

3 is an operating state of the automatic discharge device according to the invention,

4 is a view illustrating an installation state of a sensor for detecting harmful gas and dust in the automatic discharge device of the present invention,

Figure 5a is a schematic diagram showing the normal vehicle air conditioning in a vehicle equipped with the automatic discharge device of the present invention,

Figure 5b is a schematic diagram showing the air movement path of the automatic discharge mode in a vehicle equipped with the automatic discharge device of the present invention,

Figure 6 is a flow chart showing the operation sequence of the automatic discharge device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: air conditioner unit 20: battery

22: power cable protector 23: branch pipe

31: cooling air duct 32: duct opening and closing means

35: inlet duct opening means 38: warning means

40: battery cooling system 41: cooling duct

42: Inlet Duct 43: Outlet Duct

50: harmful gas and dust detection unit 51, 52: sensor

60: control unit

The present invention relates to a device for automatically discharging harmful gas and dust of a battery of a hybrid electric vehicle using an air conditioning apparatus, and more particularly, to generate heat and ignition of a high voltage battery mounted in a vehicle interior or a trunk room in a hybrid electric vehicle. The present invention relates to a device for automatically discharging harmful gas and dust, which supplies air cooled by an air conditioner to a battery when the harmful gas and dust are detected, thereby cooling the battery and forcibly discharging harmful gas and dust generated from the battery to the outside.

In general, a hybrid vehicle in a broad sense means driving a vehicle by efficiently combining two or more different power sources, but in most cases, a driving force is obtained by an electric motor driven by a fuel-powered engine and a battery. A vehicle, which is called a hybrid electric vehicle, that is, a hybrid electric vehicle (HEV).

The hybrid electric vehicle can form a variety of structures using the engine and the electric motor as a power source, most of the vehicles being studied up to now adopt either parallel or in series.

Among them, the parallel type is used to charge the battery, but to drive the vehicle directly with the electric motor. The disadvantage is that the structure is relatively more complicated than the series type and the control logic is more complicated. It can be used at the same time, because it can use the energy efficiently, the structure is widely adopted in passenger cars.

In particular, the optimum operating area of the engine and the electric motor is used to improve the fuel efficiency of the entire drive system, as well as to recover energy from the electric motor during braking, thereby enabling efficient use of energy.

The hybrid electric vehicle is equipped with a vehicle control unit (HCU) for controlling the overall vehicle, and is provided with a controller for each device constituting the system.

For example, an engine control unit (ECU) for controlling the overall operation of the engine, a motor control unit (MCU) for controlling the overall operation of the electric motor, a transmission control unit (TCU) for controlling the transmission The battery management system (Battery Management System (BMS)) that controls the operation of the battery, the air conditioning controller (Full Auto Temperature Controller, FATC) that controls the room temperature is provided.

These controllers are connected to a high-speed CAN communication line (for example, 500kbps) around a vehicle controller, which is an upper controller, so that the upper controller transmits commands to the lower controller while exchanging information between the controllers.

Meanwhile, a hybrid electric vehicle is essentially equipped with an electric motor, an inverter, and a high voltage battery that provides driving power of the electric motor. The electric motor and the inverter are mounted in an engine room, and the battery is mounted in a vehicle interior or a trunk room. The motor is divided into a structure in which an inverter and a battery are mounted in an engine room or a trunk room in an engine room.

1 is a configuration diagram showing an example of a conventional hybrid electric vehicle, in which the electric motor (not shown) and the inverter 2 are in the engine room, and the battery 3 is a seat in the rear seat of the vehicle interior. An example of a vehicle mounted below is shown.

Normally, the battery 3 mounted to the rear seat of the vehicle interior and the electric power components of the engine compartment are connected by a power cable, which is shielded and protected by a tube-shaped protector 4 surrounding it.

The hybrid electric vehicle of the illustrated example has the following problems.

In a vehicle in which the battery 3 is not isolated in the trunk room and mounted inside the vehicle, gas and dust of harmful components generated from the battery can be rapidly filled into the vehicle interior when the battery heat / ignition problem occurs.

In this case, serious problems such as a safety accident of the vehicle due to the driver's unclear visibility and a physical damage due to inhalation of harmful gas occur.

In the conventional hybrid electric vehicle, it is a reality that no countermeasure for preventing additional heat and ignition and removing harmful gas and dust generated from the battery is not provided when the battery mounted inside the vehicle generates heat and ignition.

Accordingly, the present invention has been invented to solve the above problems, and by cooling the battery to prevent further heat and ignition afterwards, at the same time to automatically discharge the harmful gas and dust generated from the battery vehicle safety by harmful gas and dust An object of the present invention is to provide a battery harmful gas and dust automatic discharge device of a hybrid electric vehicle to prevent accidents and body damage of the occupant.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention is to cool the battery when the heat generation / ignition of the high voltage battery providing the driving power of the electric motor and to automatically remove the harmful gas and dust generated from the battery,

An air conditioner device for providing cooling air;

A cooling air duct connected to the cooling duct of the battery cooling system and guiding cooling air provided by the air conditioning device toward the battery;

Duct opening and closing means installed in the cooling air inlet of the cooling air duct;

An outlet duct connected to the outside of the vehicle from the cooling duct to discharge harmful gas and dust generated from the battery together with the cooling air;

A harmful gas and dust detection unit installed around the battery to detect harmful gas and dust generated from the battery;

A control unit for maximally driving the air conditioner and opening the duct opening and closing means when it is determined from the signal of the noxious gas and dust detection unit that a harmful gas or dust of a predetermined concentration or more is generated;

It provides a battery harmful gas and dust automatic discharge device of a hybrid electric vehicle comprising a.

Here, it is characterized in that it further comprises a warning means for operating under the control of the control unit to notify the driver of the harmful gas or dust of a predetermined concentration or more.

In addition, the cooling air duct is a pipe structure is installed to protect the power cable is characterized in that the power cable protector connected to one side of the air conditioning duct to move the cooling air of the air conditioning unit through the branch pipe.

In addition, the control unit is characterized in that for closing the opening and closing means of the inlet duct connected to the vehicle interior of the cooling duct when it is determined that the harmful gas or dust above a predetermined concentration.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a device for automatically discharging harmful gas and dust of a battery of a hybrid electric vehicle using an air conditioning apparatus, and to protect a passenger from harmful gas and dust generated from a battery when an unexpected high-voltage battery is generated and fired in the hybrid electric vehicle. The present invention relates to a device for automatically discharging harmful gases and dust.

In particular, when the automatic discharge device of the present invention detects the harmful gas and dust generated from the battery through the sensor, the air conditioner, that is, the air conditioner is forcibly driven to the maximum, and the air cooled by the air conditioner through the predetermined path Provided to, it is configured to quickly discharge the harmful gas and dust generated from the battery to the outside of the vehicle while preventing further heat and ignition of the battery by the cooling air.

The automatic discharge device of the present invention can be equally applied to the case where the battery is mounted in the trunk room as well as when the battery is mounted in the vehicle interior as illustrated in FIG. 1.

With reference to the accompanying drawings will be described in more detail for the configuration of the preferred embodiment according to the present invention.

2 is a configuration diagram of the automatic discharge device according to the present invention, Figure 3 is an operating state diagram of the automatic discharge device according to the invention.

2 shows a general mode in which the battery is cooled by the vehicle indoor air, and FIG. 3 shows an automatic discharge mode for automatically discharging harmful gas and dust to the outside of the vehicle.

As shown in the drawing, the automatic discharging device of the present invention uses an air conditioner, in particular, an air conditioner 10 for cooling a vehicle interior. The components of the air conditioner 10 are well known, and thus, description thereof will be omitted. do.

In the automatic discharge device of the present invention, the air conditioner device 10 provides cooling air for cooling the battery 20, which can provide cooling air toward the battery 20 from the air conditioner device 10 configured in the engine room. Some route is required.

Therefore, the cooling air duct 31 is installed as a path for providing the cooling air of the air conditioner 10 toward the battery 20, and the battery 20 is mounted in the vehicle interior (eg, under the rear seat) or the trunk room. Therefore, the cooling air duct 31 should be connected to the location of the battery 20 of the vehicle interior or the trunk room in the engine room.

Preferably, the power cable protector 22 pre-installed in the vehicle may be used as the cooling air duct 31.

The power cable protector 22 is a pipe structure surrounding the power cable 21 connecting the battery 20 and the electric drive parts of the engine room, and serves to shield and protect the built-in power cable 21. In the present invention, the cooling air provided from the air conditioner 10 is used as a cooling air passage for providing the battery 20.

In the automatic discharge device of the present invention, in order to use the power cable protector 22 as the cooling air duct 31, a separate branch pipe 23 is installed at the end of the engine room side of the power cable protector 22. The engine 23 is connected to one side of the air conditioning duct 11 to which the cooling air of the air conditioner 10 moves.

As a means for opening / closing the cooling air duct 31, the cooling air inlet port of the branch pipe 23 selectively opens and closes the passage of the branch pipe 23 by a control signal of the controller 60 described later. The means 32 are provided, and the duct opening and closing means 32 is an opening / closing door 33 for opening and closing a passage and a driving actuator of the opening / closing door 33 and controlled by a control signal of the controller 60. Which may be composed of a motor 34.

In addition, the outlet of the power cable protector 22 used as the cooling air duct 31 is connected to the cooling duct 41 of the battery cooling system 40 installed in the vehicle.

In the battery cooling system 40 of the hybrid electric vehicle, vehicle indoor air is introduced into the cooling duct 41 having the battery 20 embedded therein through the inlet duct 42 to cool the battery 20. Connecting the 22 to the cooling duct 41 to supply the cooling air of the air conditioning device 10 to the cooling duct 41, so that the cooling air supplied in this way to cool the battery (20).

As described above, the cooling air supplied from the air conditioner device 10 cools the battery 20 to prevent further heating and ignition of the battery 20.

In addition, since the cooling air supplied through the cooling air duct 31 is forcedly blown when the air conditioner 10 is driven, the forced air is forced to discharge harmful gas and dust generated from the battery 20. .

That is, by blowing the cooling air toward the battery 20 through the cooling air duct 31, the harmful gas and dust generated from the battery 20 is pushed to the cooling air outlet duct 43 is installed on the outlet side of the cooling duct 41 It is discharged to the outside of the vehicle through.

In addition, the inlet duct 42 is provided with a separate opening and closing means (hereinafter referred to as an inlet duct opening and closing means), and the inlet duct opening and closing means 35 is installed at the cooling air inlet of the cooling air duct 31. Like the duct opening and closing means 32 may be composed of a motor 37 which is controlled by the opening and closing door 36 and the control unit 60.

The inlet duct opening and closing means 35 is closed by the control signal of the control unit 60 when the cooling air is supplied to the battery 20 through the cooling air duct 31 as described later, the passage of the inlet duct 42 It is supposed to block.

That is, the controller 60 that detects the generation of harmful gas or dust in the battery 20 closes the inlet duct opening and closing means 35 to prevent harmful gas or dust from entering the vehicle interior.

4A is a schematic view showing a vehicle air conditioning state in a vehicle in which the automatic discharge device of the present invention is installed, and FIG. 4B is a schematic view showing an air movement path in the automatic discharge mode in a vehicle in which the automatic discharge device of the present invention is installed.

Referring to this, when the air conditioner 10 is normally driven, as shown in FIGS. 2 and 4A, external air is cooled by the air conditioner 10 and then provided to the vehicle interior, and the battery cooling system 40 is also provided. In the vehicle indoor air is introduced through the inlet duct 42 to cool the battery 20 is discharged to the outside of the vehicle through the outlet duct 43.

In this way, the duct opening and closing means 32 is in a state of blocking the passage, so that the cooling air of the air conditioner 10 is not supplied to the power cable protector 22 used as the cooling air duct 31, and the power cable The protector 22 is only responsible for the original function of protecting the power cable 21.

On the other hand, in the operating state of the automatic discharge device of the present invention, as shown in Fig. 3 and 4b, the control unit 60 outputs a control signal for forcibly driving the air conditioner device 10, and also the duct opening and closing means ( The control signal for opening 32 is outputted, and the air conditioner 10 is forcibly driven at the same time and the air cooled by the air conditioner 10 is opened while the duct opening and closing means 32 is opened. ) Is supplied to the cooling duct 41 of the battery cooling system 40.

The cooling air supplied to the cooling duct 41 forcibly discharges harmful gases and dust generated in the battery 20 to the outside of the vehicle through the outlet duct 43 while cooling the battery 20.

On the other hand, the automatic discharge device according to the present invention is a harmful gas and dust detection unit 50 for detecting the harmful gas and dust generated when the high voltage battery 20 is heated and ignited, and the harmful gas and dust detection unit 50 And a control unit 60 that switches to the automatic discharge mode when it detects that a harmful gas or dust of a predetermined concentration or more is generated from the output signal.

The noxious gas and dust detection unit 50 includes a plurality of sensors 51 and 52 installed around the battery 20 and detects noxious gas or dust and outputs an electrical signal to the control unit 60. do.

The harmful gas and dust detection unit 50 may be composed of sensors that detect harmful gases, such as methane, propane, hydrogen, carbon dioxide or dust generated during battery heating and ignition.

The control unit 60 is a control signal for turning off the battery system when it detects the generation of harmful gas or dust of a predetermined concentration from the output signal of the sensors 51, 52 constituting the harmful gas and dust detector 50, By outputting a control signal for forcibly driving the air conditioner 10 and a control signal for opening the cooling air duct 31, the automatic discharge device of the present invention is switched to the automatic discharge mode.

In addition, the automatic discharge device of the present invention includes a warning means 38 for informing the driver when it detects the occurrence of harmful gas or dust, the warning means 38 as a warning light or horn, or other warning It can be implemented with devices that can deliver messages to the driver.

The warning means 38 is operated by a control signal output by the control unit 60 that detects the generation of harmful gas or dust.

In the automatic discharge device of the present invention, a separate controller for performing the above functions may be added as the controller 60, but the controller may be added to the air conditioner controller to serve as the controller.

5 is a flowchart illustrating an operation sequence of the automatic discharge device according to the present invention, which will be described with reference to FIGS. 2 to 5 attached to the operation state of the automatic discharge device according to the present invention.

When the controller 60 detects a battery abnormal state, that is, a harmful gas or dust of a predetermined concentration or more, is generated from the output signal of the harmful gas and the dust detection unit 50 while the vehicle is running, a control signal for turning off the battery system is output. Accordingly, the battery relay 24 is turned off and the battery system is turned off.

In addition, the control unit 60 outputs a control signal for forcibly driving the air conditioner 10 at the same time and at the same time outputs a control signal for opening the duct opening and closing means 32, whereby the air conditioner 10 is maximum. The cooling air is supplied to the battery 20 through the cooling air duct 31 (power cable protector) while being driven by.

In this case, the controller 60 closes all the opening and closing doors 12 and 13 of the duct for discharging the cooling air from the air conditioning duct 11 through which the cooling air of the air conditioner 10 moves to the interior of the vehicle. Prevent cooling air from being supplied.

In addition, the control unit 60 closes the inlet duct opening and closing means 35 to block the passage of the inlet duct 42, and the harmful gas and dust together with the cooling air remove the inlet duct 42 from the battery cooling duct 41. Do not discharge into the vehicle interior.

Then, the controller 60 outputs a control signal for operating the warning means 38 to warn the driver of the battery abnormal condition.

As described above, the cooling air supplied to the battery 20 cools the battery 20 to prevent further heat generation and ignition afterwards, and also removes harmful gases and dusts from the vehicle through the outlet duct 43. Forced discharge to the outside.

Then, when it is determined that all harmful gases and dust are discharged from the output signal of the noxious gas and dust detection unit 50 (detection below a certain concentration), the control unit 60 switches the air conditioner 10 to a previous operation state (off or user operation). Operation state), and closes the cooling air duct 31.

Of course, the battery relay 24 continues to be off to prohibit the use of the battery 20 afterwards, and the operation of the warning means 38 is maintained to warn the driver of the occurrence of a battery abnormality.

As described above, according to the battery 20 harmful gas and dust automatic discharge device according to the present invention, by providing the air cooled by the air conditioning device 10 to the battery 20, additional heat generation of the battery 20 And by preventing the ignition at the same time by forcibly discharge the harmful gas and dust by the cooled air to the outside of the vehicle, it is possible to effectively prevent vehicle safety accidents and body damage of the occupants.

Claims (4)

In order to cool the battery and to automatically remove harmful gas and dust generated from the battery when the heat / ignition of the high voltage battery providing the driving power of the electric motor occurs. An air conditioner device for providing cooling air; A cooling air duct connected to the cooling duct of the battery cooling system and guiding cooling air provided by the air conditioning device toward the battery; Duct opening and closing means installed in the cooling air inlet of the cooling air duct; An outlet duct connected to the outside of the vehicle from the cooling duct to discharge harmful gas and dust generated from the battery together with the cooling air; A harmful gas and dust detection unit installed around the battery to detect harmful gas and dust generated from the battery; A control unit for maximally driving the air conditioner and opening the duct opening and closing means when it is determined from the signal of the noxious gas and dust detection unit that a harmful gas or dust of a predetermined concentration or more is generated; Battery harmful gas and dust automatic discharge device of a hybrid electric vehicle configured to include. The method according to claim 1, The battery harmful gas and dust automatic discharge device of the hybrid electric vehicle further operates under the control of the control unit and a warning means for informing the driver when a harmful gas or dust of a predetermined concentration or more. The method according to claim 1, The cooling air duct is a pipe structure and is installed to protect the power cable is a power cable protector of the hybrid electric vehicle, characterized in that the power cable protector connected to one side of the air conditioning duct to move the cooling air of the air conditioning unit through the branch pipe. ejector. The method according to claim 1, And the control unit closes the opening and closing means of the inlet duct connected to the vehicle interior of the cooling duct when it is determined that the harmful gas or dust generated at a predetermined concentration or more, the apparatus for automatically discharging the harmful gas and dust of the hybrid electric vehicle.

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