KR20130027102A - System for control of temperature of main battery for plugin hybrid and hybrid vehicle - Google Patents

Abstract

PURPOSE: A temperature control system of a main battery for a plug-in hybrid and a hybrid vehicle is provided to maintain a proper temperature range using an air conditioner, and so on, and identify whether or not an exhaust gas heat exchanger and the air conditioner are normally operated. CONSTITUTION: The above range of the certain temperature of the main battery is >=40°C, the above range of the certain velocity of the vehicle is >=60km/h, the under range of the certain velocity of the vehicle is <60km/h, and the under range of the certain temperature of the main battery is <=5°C.

Description

Temperature control system for plug-in hybrid and hybrid vehicle main batteries {SYSTEM FOR CONTROL OF TEMPERATURE OF MAIN BATTERY FOR PLUGIN HYBRID AND HYBRID VEHICLE}

The present invention relates to a temperature control system of a plug-in hybrid and a hybrid vehicle main battery, and in detail, an external air inlet pipe and an air passage tube of an air conditioner and an exhaust gas heat exchanger connected to communicate with the main battery in a vehicle. Maintain proper temperature range by cooling or heating the temperature of main battery by external air or cold air and heater heat introduced through external air inlet pipe and air passage pipe to air conditioner or heater of air conditioner operated by controller installed inside. A temperature control system of a plug-in hybrid and a hybrid vehicle main battery.

According to the control of the controller by the temperature control system of the hybrid vehicle main battery of the present invention as described above, the main battery is cooled by the inflow of the external air through the external air inlet pipe at a predetermined temperature or more than the predetermined temperature of the main battery. The main battery is cooled by the operation of the air conditioner of the air conditioner at a predetermined temperature of the main battery or below the predetermined speed of the vehicle. When the air conditioner of the air conditioner is not operated, the main battery is cooled by introducing external air. and,

If the user checks whether the air conditioner is operating, if it is not operated, the main battery is cooled by the air conditioner of the air conditioner above a certain temperature of the main battery and the outdoor temperature, and the vehicle is started when the temperature of the main battery is lower than the predetermined temperature. The main battery is heated by the heater of the air conditioner or the exhaust gas heat exchanger according to the warm-up state of the engine based on the

When the user operates the air conditioner, a temperature control system for operating the air conditioner or heater of the air conditioner to cool or heat the main battery is driven according to the temperature of the main battery.

As a background art of the present invention, a hybrid vehicle is a vehicle driven by using a plurality of power sources (internal combustion engine engine, electric motor), and installed with a plurality of power sources (engine, electric motor), and whichever power is applied according to the driving state. There is a method of driving by using, a method of attaching a generator to the engine to generate power, and the method of driving a vehicle by operating a motor with generated electricity.

Thus, in a hybrid vehicle, the battery becomes one of the most important components, and in terms of battery modeling, the internal resistance model can be modeled as having an internal power source and internal resistance. There is an advantage that it is easy to identify the value of the voltage source.

In terms of battery efficiency, the internal resistance of the battery is closely related to the battery efficiency, which is largely dependent on the state of charge (SOC) and temperature of the battery.

The state of charge (SOC) of the battery is one of the important factors involved in the driving mode of the hybrid vehicle and serves as a reference for the charging and discharging strategy of the hybrid vehicle.

Under certain SOCs, the internal resistance of a battery varies with temperature, so SOCs may be the same, but battery characteristics (efficiencies) may be different, which poses uncertainty for hybrid vehicle driving optimization strategies.

Looking at the relationship between the battery internal resistance and the temperature, the battery internal resistance has a larger value at a lower temperature. That is, it has low charge and discharge efficiency at low temperature. In addition, the internal resistance value reaches a low value from a temperature slightly higher than room temperature, and there is no significant change in the resistance value at higher temperatures.

Therefore, the temperature inside the battery of the hybrid vehicle is preferably kept constant and constant in a section in which the battery can perform optimal performance.

In view of this, there is a conventional hybrid vehicle in which the rear air conditioner is installed to maintain the battery at an appropriate temperature by using the cool air generated in the rear air conditioner and waste heat generated in the muffler.

However, in the conventional hybrid vehicle that controls the temperature of the battery in the manner as described above, by sensing the temperature of the battery, when the air conditioner is ON and the battery is above the proper temperature, the battery is cooled by cold air supplied from the duct of the rear air conditioner When the air conditioner is off and the battery is below the proper temperature, it only heats the battery with the heat of the exhaust gas flowing through the muffler.

Therefore, regardless of the operation of the air conditioner, depending on a variety of vehicle environment, such as when the vehicle is running, not running, or starting the vehicle, the battery is cooled or heated using an air conditioner or the like in any situation Thus, the above-described conventional hybrid vehicle does not have a system for maintaining an appropriate temperature range.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to communicate with an external air inlet pipe installed in a vehicle, an air passage pipe connected to an air conditioner of the vehicle, and an exhaust gas heat exchanger connected to an exhaust gas passage. The main battery is cooled or heated by the external air inlet pipe, the air passage pipe and the exhaust gas heat exchanger by controlling the controller according to the detection signal by sensing the temperature of the main battery by a sensing unit installed in the vehicle. Maintain plug-in hybrid and hybrid vehicles to maintain the proper temperature range and to check the exhaust gas and the air passage inlet and outlet temperature by the sensing unit to check whether the exhaust gas heat exchanger and the air conditioner fan is operating normally. To provide a battery temperature control system The.

The temperature control of the main battery detects the temperature of the main battery and the speed of the vehicle by the sensing unit, and then controls the controller according to the detection result, the predetermined temperature of the main battery or the predetermined speed of the vehicle or the main Depending on the battery's constant temperature and below the vehicle's constant speed, the main battery is cooled by inflowing external air through the external air inlet pipe and heater or cold air through the air conditioner of the vehicle's air conditioner.

When the air conditioner does not operate or the temperature of the main battery is below a certain temperature, the user checks the operation of the air conditioner. When the air conditioner is not operated, the main battery is cooled by a heater of the air conditioner when the temperature of the main battery is not operated. If the main battery is not above a certain temperature, the main battery is heated by the exhaust gas heat exchanger or air conditioner heater by the warm-up request of the engine that starts the vehicle.When the air conditioner is in operation, the main air is operated by the air conditioner or the heater of the air conditioner. By sensing the temperature of the battery, to maintain a constant temperature range by cooling or heating the main battery of the vehicle by the air conditioner, heater or exhaust gas heat exchanger of the external air inlet pipe or air conditioner.

Another purpose is to use the air conditioner installed in the front of the vehicle, the main battery is a temperature control system of the plug-in hybrid and the hybrid vehicle main battery which is disposed between the driver's seat and the passenger seat, or distributed separately below the driver's seat and the passenger's outer seat. In providing.

The temperature control system of the plug-in hybrid and hybrid vehicle main battery of the present invention to achieve the above object, in the system for controlling the temperature of the main battery of the hybrid vehicle, the external air inlet pipe and the vehicle through which the outside air flows An air passage tube connected to an air conditioner and an exhaust gas heat exchanger installed in an exhaust gas passage of the vehicle is installed in the vehicle so as to communicate with the main battery, and the temperature of the main battery, the speed of the vehicle, the indoor / outdoor air temperature, the air conditioner And a sensing unit configured to sense whether the engine warms up, exhaust gas temperature, air passage inlet and outlet temperature connected to the main battery, and a controller for controlling the system by the detection signal by the sensing unit. By the control of the controller, the temperature of the main battery, the speed of the vehicle Also, depending on the indoor and outdoor air temperature and whether the air conditioner and the engine warm up are operated, the main battery is cooled or heated by the air conditioner, the heater, and the exhaust gas heat exchanger of the external inlet pipe, the air conditioner, It is characterized in that the normal fan operation of the exhaust gas heat exchanger and air conditioner.

In addition, the cooling or heating process of the main battery by the control of the controller, at a predetermined temperature or more of the main battery and a certain speed or more of the vehicle, the external air is introduced through the external air inlet pipe to cool the main battery. The air conditioner of the air conditioner is operated above a predetermined temperature of the main battery and below the predetermined speed of the vehicle to cool the main battery by the cold air of the air conditioner introduced through the air passage pipe, and when the air conditioner is not operated, the heater of the air conditioner. If is in the operating state to cool the main battery by introducing external air through the external air inlet pipe, when the air conditioner is not operating or the temperature of the main battery is below a certain temperature, the user checks the operation of the air conditioner, the user When the air conditioner is not in operation, the main battery has a certain temperature and outdoor temperature. Below a certain temperature of the figure, the air vent of the air conditioner is operated by blocking the air vents arbitrarily and cooling the main battery with the cold air of the air conditioner introduced through the air passage pipe, and the predetermined temperature of the main battery above the predetermined temperature and the outdoor temperature. If the following is not the case, after confirming the warm-up request for starting the vehicle, before the warm-up of the engine, the indoor blower is shut off, and the heater of the air conditioner is arbitrarily operated to heat the main battery by the heater heat of the heater introduced through the air passage pipe, When the engine is warmed up, the main battery is heated by the heat of the exhaust gas introduced through the exhaust gas heat exchanger, and when the user is operating the air conditioner of the air conditioner, the main battery is cooled by the air conditioner of the air conditioner at a predetermined temperature or more of the main battery. Exhaust gas heat exchange below a certain temperature of the main battery When the main battery is heated, and the user is operating the heater of the air conditioner, the main battery is cooled by an external air inlet pipe at a temperature higher than or equal to a predetermined temperature of the main battery. It is preferable to make it by heating a battery.

The constant temperature of the main battery is greater than or equal to ≥ 40 degrees, the constant speed of the vehicle is greater than or equal to 60 km / h, the less than the constant speed of the vehicle is less than <60 km / h, and less than or equal to the constant temperature of the main battery. Is preferably ≤5 degrees.

In addition, the main battery is preferably distributed under the driver's seat and the passenger seat, or disposed between the driver's seat and the passenger seat in front of the vehicle or under the vehicle as a whole.

According to the temperature control system of the plug-in hybrid and hybrid vehicle main batteries of the present invention, the main battery is always operated optimally in various environments such as when the hybrid vehicle is operated at high or low speed or when the user starts the air conditioner. If you make it in the temperature range, it has the effect of improving fuel economy.

That is, when the engine of the vehicle is operating, the main battery is cooled or heated by using an external air inlet pipe, an air conditioner and an exhaust gas heat exchanger of the air conditioner, and when the main battery is started at a low temperature, the heater of the air conditioner even before warming up the engine. By operating the battery to heat the battery, the main battery can be brought to an optimum operating temperature range quickly.

In addition, since the air conditioner disposed at the front of the vehicle is used for cooling or heating the main battery, the main battery of the hybrid vehicle is disposed in front of the vehicle in both directions or positioned between the passenger seat and the driver's seat, so that the main battery can be easily cooled and heated. It is effective, and the space utilization is increased.

1 is a schematic configuration diagram of a temperature control system of a plug-in hybrid and a hybrid vehicle main battery according to the present invention;
2 is a schematic configuration diagram of an exhaust gas passage portion of a temperature control system of a plug-in hybrid and a hybrid vehicle main battery according to the present invention;
3 is a conceptual diagram of a controller used in the temperature control system of the plug-in hybrid and the hybrid vehicle main battery according to the present invention.
Figure 4a is a flow chart corresponding to one portion of the temperature control system of the plug-in hybrid and hybrid vehicle main battery according to the present invention.
Figure 4b is a flow chart corresponding to the other part of the temperature control system of the plug-in hybrid and hybrid vehicle main battery according to the present invention.

Hereinafter, a preferred embodiment of a temperature control system of a plug-in hybrid and a hybrid vehicle main battery according to the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

1 is a schematic configuration diagram of a temperature control system of a plug-in hybrid and a hybrid vehicle main battery according to the present invention, and FIG. 2 is a schematic view of an exhaust gas passage portion of a temperature control system of a plug-in hybrid and a hybrid vehicle main battery according to the present invention. Phosphorus diagram is shown.

As shown in Figure 1 and 2, the temperature control system of the plug-in hybrid and hybrid vehicle main battery according to the present invention is an external air inlet pipe (2), air passage pipe (3) in communication with the main battery (1) in the vehicle ), An exhaust gas heat exchanger 4 and a sensing unit and a controller installed in the vehicle, although not shown in the drawing, have a basic configuration.

The external air inlet pipe (2) is installed in the vehicle so that one end is connected to the outside and the other end is connected to communicate with the main battery (1), and the other side of the external air inlet pipe (2) An air opening and closing plate 2a is provided between the main batteries 1 so that outside air flows in when the air opening and closing plate 2a is opened, and inside air flows in when the air opening and closing plate 2a is opened.

The air passage pipe 3 is separately connected to the air conditioner 5 installed on the front of the vehicle as a heater 5a and an air conditioner (A / C) 5b, so that one end is connected to the air conditioner 5. At the same time, the other end is connected to communicate with the main battery (1). When the air opening and closing plate (2a) is closed, the cold air or heater heat corresponding to the internal air is introduced into the air reservoir connected to the air conditioner (5). It is made through the furnace pipe (3).

The air conditioner (5) consisting of a heater (5a) and an air conditioner (5b) is an indoor blower, a front blower (6a) is installed on the front of the dashboard of the vehicle, a foot blower (6b) is installed under the dashboard, the dashboard A glass window vent 6c is installed on the upper side of the glass window, and the air passage tube 3 is installed in a dashboard beside the glass window vent 6c as an air blower not provided in a conventional air conditioner. Adjusting plates 7a, 7b, and 7c are respectively installed in the indoor air vents 6a, 6b, and 6c, and the adjusting plates 3a are also installed in the air passage pipes 3.

The air conditioner 5a of the air conditioner 5 generates cold wind and the heater 5b generates hot wind, so that the cold or hot wind is blown by the fan to the indoor vents 6a, 6b, 6c or the air reservoir. It is discharged through the furnace pipe (3).

The exhaust gas heat exchanger 4 is installed in the exhaust gas passage 8 (corresponding to the muffler) leading to the exhaust gas inlet 8a and the exhaust gas outlet 8b and connected to communicate with the main battery 1. The end portion becomes a heat exchanger inlet 4a through which indoor or outdoor air flows, and the other end portion becomes a heat exchanger outlet 4b through which the heat-exchanged air is discharged, and the heat exchange is performed when the air opening and closing plate 2a is closed. The exhaust gas heat generated is introduced into the main battery 1 through the exhaust gas heat exchanger 4 installed in the exhaust gas passage 8.

A gas opening and closing plate 8c is provided at the inlet side of the exhaust gas passage 8, and when the gas opening and closing plate 8c is open, the exhaust gas passes through the exhaust gas outlet 8b at the exhaust gas inlet 8a. When the main battery 1 is to be heated by exhaust gas heat, the gas opening and closing plate 8c is closed so that the exhaust gas is discharged through the exhaust gas outlet 8b after heat exchange occurs through the exhaust gas heat exchanger 4. Be sure to Therefore, the indoor or outdoor air introduced through the heat exchanger inlet 4a of the exhaust gas heat exchanger 4 is heat-exchanged in the exhaust gas heat exchanger 4 by the exhaust gas, and the heat-exchanged indoor or outdoor air is It is discharged through the heat exchanger outlet 4b of the exhaust gas heat exchanger 4 and flows into the main battery 1 to heat the main battery 1.

At this time, when the indoor air temperature of the hybrid vehicle is higher than the outside air temperature, indoor air is introduced through the heat exchanger inlet 4a of the exhaust gas heat exchanger 4, and the indoor air temperature of the hybrid vehicle is lower than the outside air temperature. At this time, outside air flows in through the heat exchanger inlet 4a of the exhaust gas heat exchanger 4.

The sensing unit detects the temperature of the main battery, the speed of the vehicle, the indoor air temperature, the external air temperature, whether the air conditioner is operating, whether the engine warms up, the exhaust gas temperature, and the air passage inlet and outlet connected to the main battery, respectively. It plays a role.

The controller operates the air conditioner 5a and the heater 5b and the exhaust gas heat exchanger 4 of the external air inlet pipe 2 and the air conditioner 5 according to the sensing result of the temperature of the main battery by the sensing unit. The controller determines whether the fan of the exhaust gas heat exchanger 4 and the air conditioner 5 is normally operated according to the sensing result of the temperature of the exhaust gas and the sensing result of the air passage pipe inlet and outlet temperature by the sensing unit.

The controller is composed of a failure diagnosis module and a calculation module to properly control the operation of each component, and includes a function for driving an actuator, a sensor signal processing function of a sensing unit, and a communication function for sensor signal processing.

The actuator driving function of the controller drives other actuators in each part to open and close the air opening and closing plate 2a and the gas opening and closing plate 8c, and the sensor signal processing function is the speed of the vehicle, whether the air conditioner 5 is operated, Engine warm-up operation, the main battery (10) by processing the signal of the sensing unit for detecting whether the fan operation of the respective components to operate.

In addition, the sensor signal processing function detects the temperature of the main battery (1), indoor air temperature, external air temperature, exhaust gas temperature, the temperature of the air passage pipe (3) inlet and outlet connected to the main battery (1) Each component is activated by processing a negative signal.

In addition, communication for the sensor signal processing of the sensing unit of the controller is responsible for the controller area network (CAN) and local interconnect network (LIN) communication built in the controller.

As such, since the air conditioner 5 on the front of the vehicle is used to cool or heat the main battery 1, the main battery 1 is preferably located at the front of the vehicle. That is, in the present invention, the main battery 1 is arranged to be distributed under the driver's seat and the passenger seat in front of the vehicle, or disposed between the driver's seat and the passenger seat. Of course, the main battery 1 may be disposed under the entire vehicle even though the main battery 1 is slightly far from the air conditioner 5.

Figure 4a is a flow chart corresponding to one part of the temperature control system of the plug-in hybrid and hybrid vehicle main battery according to the present invention, Figure 4b is the other part of the temperature control system of the plug-in hybrid and hybrid vehicle main battery according to the present invention. The operation flowchart corresponding to the figure is shown.

As shown in Figure 4a and 4b, the temperature control system of the main battery consists of the following process.

First, as shown in Figure 4a, the sensing unit detects the temperature and the vehicle speed of the main battery 1 of the vehicle and sends it to the controller.

When the temperature of the main battery 1 is 40 degrees or more and the vehicle speed is 60 km / h or more by sensing of the sensing unit, since the outside air is introduced by a vehicle running at high speed, the controller opens the air opening and closing plate 2a. The external air is introduced through the external air inlet pipe 2 to cool the main battery 1 to be within a set temperature.

Usually, since the experiment finds that the proper operating temperature range of the main battery of the hybrid vehicle is about 20 to 40 degrees, it is preferable to cool the main battery at a set temperature of 40 degrees or less.

When the temperature of the main battery 1 is 40 degrees or more and the vehicle speed is less than 60 km / h by sensing by the sensing unit, since the outside air is not introduced by the vehicle running at a low speed, the controller may be an external air inlet pipe ( 2) to close the air opening and closing plate (2a) to operate the air conditioner (5a) of the air conditioner (5) to introduce the cold air through the air passage pipe (3) to the fan to bring the main battery (1) to a set temperature To cool.

When the air conditioner 5a of the air conditioner 5 does not operate under the condition of the vehicle speed of the main battery 1, the controller opens the air opening and closing plate 2a to operate the heater 5b of the air conditioner 5 The external air is introduced through the external air inlet pipe 2 to cool the main battery 1 to a predetermined temperature.

As such, it is necessary to lower the temperature of the main battery while the main battery is at a high temperature. Depending on the operating temperature range of the main battery, the main battery can be cooled by controlling the vehicle speed and air conditioner at a constant speed or more from about 40 degrees or more. Will be.

In the conventional hybrid vehicle, since the user directly operates the air conditioner when the indoor temperature of the vehicle is 30 degrees or more, the air circulating in the room cools the battery by the operation of the air conditioner, but in the temperature control system of the main battery of the present invention By controlling the controller, the air conditioner is temporarily operated to maintain the main battery temperature no longer to improve fuel economy.

That is, when the user turns off the air conditioner, the controller arbitrarily operates the air conditioner of the air conditioner so that only cold air flows into the main battery through the air passage pipe of the air conditioner.

If the vehicle speed is 60km / h or more, it does not need to use the air conditioner of the air conditioner, thereby introducing external air through the external air inlet pipe, which prevents the temperature increase of the main battery and helps increase fuel economy.

When the temperature of the main battery 1 is less than 40 degrees from 6 degrees or more by sensing of the sensing unit, the temperature of the main battery 1 is continuously detected.

When the temperature of the main battery 1 is 5 degrees or less or the temperature of the main battery 1 is 40 degrees or more and a certain speed or more or less by the sensing unit, the air conditioner 5a and the heater ( If 5b) is not in operation, the controller checks whether or not the user is operating the air conditioner 5.

When the user confirms the OFF state in which the air conditioner is not in operation by the control unit, as shown in FIG. 4B, if the temperature of the main battery 1 is 40 degrees or more and the outdoor temperature is 25 degrees or more by sensing the sensing unit, The controller cuts off each of the air vents 6a, 6b, and 6c, and then closes the air opening and closing plate 2a and arbitrarily operates the air conditioner 5a of the air conditioner 5 to supply cold air through the air passage pipe 3. By flowing in, the main battery 1 is cooled to a set temperature.

When the temperature of the main battery 1 is less than 40 degrees and the outdoor temperature is less than 25 degrees by sensing of the sensing unit, warming up of the engine is required in response to starting the vehicle.

Accordingly, when the engine is operated by the request for warming up of the engine, the control unit closes the gas opening and closing plate 8c and discharges it through the exhaust gas inlet 8a and the exhaust gas outlet 8b of the exhaust gas passage 8 at the same time. The exhaust gas is bypassed and discharged through the exhaust gas heat exchanger 4. That is, indoor or external air introduced through the heat exchanger inlet 4a is generated as exhaust gas heat in the exhaust gas heat exchanger 4 through heat exchange by exhaust gas, and the exhaust gas heat is generated from the external air inlet pipe 2. It is discharged through the heat exchanger outlet (4b) in the state in which the air opening and closing plate (2a) is closed to prevent the () to flow into the main battery (1) to heat the main battery (1) to a set temperature.

Since the main battery 1 is in a low temperature state before the engine is operated by the warm-up request of the engine, the air opening and closing plate 2a is closed to block the external air inlet pipe 2 under the control of the controller. The main battery 1 is set by blocking the respective air vents 6a, 6b and 6c and then randomly operating the heater 5b of the air conditioner 5 to introduce the heater heat through the air passage pipe 3. Heat to temperature.

On the other hand, if the ON state that the user is operating the air conditioner by the control unit, as shown in Figure 3b, according to whether the air conditioner (5a) or the heater (5b) of the air conditioner (5), the main battery (1) To cool or heat.

That is, when the user operates the air conditioner 5a of the air conditioner 5, when the temperature of the main battery 1 is 40 degrees or more by the sensing of the sensing unit, the controller blocks the air inlet pipe 2 so as to block the external air inlet pipe 2. By closing the opening and closing plate (2a) and operating the air conditioner (5a) of the air conditioner (5) to flow the cold air through the air passage pipe (3) to cool the main battery (1) to a set temperature.

When the user is operating the air conditioner 5a of the air conditioner 5, the gas opening and closing plate 8c is closed by the control unit if the temperature of the main battery 1 is 5 degrees or less instead of 40 degrees by the sensing unit. At the same time, the exhaust gas discharged through the exhaust gas inlet 8a and the exhaust gas outlet 8b of the exhaust gas passage 8 is bypassed and discharged through the exhaust gas heat exchanger 4. That is, indoor or external air introduced through the heat exchanger inlet 4a is generated as exhaust gas heat in the exhaust gas heat exchanger 4 through heat exchange by exhaust gas, and the exhaust gas heat is generated from the external air inlet pipe 2. It is discharged through the heat exchanger outlet (4b) in the state in which the air opening and closing plate (2a) is closed to prevent the () to flow into the main battery (1) to heat the main battery (1) to a set temperature.

The exhaust gas heat exchanger (4) can always check whether the normal operation. That is, the sensing unit senses a temperature difference between the exhaust gas flowing through the exhaust gas inlet 8a and the exhaust gas outlet 8b of the exhaust gas passage 8, and if there is almost no temperature difference, heat exchange in the exhaust gas heat exchanger 4 is performed. Since it is not done properly, the controller operates according to the sensing result of the sensing part that has little temperature difference so that the user can recognize it as a warning light.

In addition, when the user operates the heater 5b of the air conditioner 5, if the temperature of the main battery 1 is 40 degrees or more by the sensing of the sensing unit, the controller opens the air opening and closing plate 2a to open the outside air. By inflowing external air through the inlet pipe 2, the main battery 1 is cooled to a set temperature.

When the user is operating the heater 5b of the air conditioner 5, if the temperature of the main battery 1 is 5 degrees or less by 40 degrees of sensing by the sensing unit, the controller introduces heater heat to the main battery ( 1) is heated up to the set temperature.

As such, when the main battery is in a low temperature state, it is necessary to increase the temperature of the main battery. An appropriate operating temperature range of the main battery is about 20 to 40 degrees as described above, but at a low temperature below the appropriate temperature range. Since the main battery cannot be operated, the engine uptime is required.

Due to the characteristics of the hybrid vehicle at low temperatures, the engine is warmed up by starting the vehicle to raise the active temperature of the catalyst, which is used to heat the main battery with the exhaust gas emitted during the warm-up.

When the vehicle is not warmed up through the preheater device, the main battery is heated by the heater of the air conditioner, thereby increasing the main battery to the operating temperature range within a short time, thereby helping to utilize the exhaust gas and improve fuel efficiency.

That is, when the user turns off the heater of the air conditioner, the controller arbitrarily operates the heater of the air conditioner before warming up the engine to inject the heater heat through the air passage pipe of the air conditioner to heat the main battery.

In order to maintain the temperature of the main battery 1 in an appropriate temperature range, it is important that the air conditioner 5a or the heater 5b of the air conditioner 5 cooling or heating the main battery 1 is operated normally. 5a) or the heater 5b sends the generated cold or hot wind to the main battery 1 by the fan to cool or heat it, thereby checking whether the fan is normally operated. That is, the sensing unit detects a difference between the air temperature at the inlet entering the main battery 1 through the air passage tube 3 and the air temperature passing through the main battery 1 by the sensing unit, and the difference in air temperature according to the detection result. If there is little, the fan of the air conditioner (5) does not work properly and the cooling or heating of the main battery (1) is not done properly. Therefore, the controller operates according to the sensing result of the sensing part that has little difference in air temperature. To be recognized by the user.

On the other hand, even in all-weather conditions such as hybrid vehicles in hot and extreme cold climates in order to achieve a smooth operation of the main battery is required to maintain a proper temperature range.

In other words, the temperature increase of the main battery of the hybrid vehicle is inevitable during charging and discharging, and when the main battery is exposed to low temperature, it is necessary to raise the main battery to an appropriate temperature. It can be seen that the charge output and discharge output of the main battery drops drastically.

Therefore, even if the hybrid vehicle is located in a hot or cold region, as in the temperature control system of the main battery according to the present invention when starting the vehicle for the first time, the heater heat of the air conditioner heater and the exhaust of the exhaust gas heat exchanger. It is necessary to heat the main battery to an appropriate temperature range using gas heat.

As described above, the temperature control system of the plug-in hybrid and the hybrid vehicle main battery according to the present invention has been described with reference to the drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and the present invention. Of course, various modifications can be made by those skilled in the art within the scope of the technical idea.

1: main battery 2: external air inlet pipe
2a: air opening and closing plate 3: air passage pipe
3a: air passage pipe control plate 4: exhaust gas heat exchanger
4a: heat exchanger inlet 4b: heat exchanger outlet
5: air conditioner 5a: heater
5b: Air conditioner 6a: Front vent
6b: step air vents 6c: glass window vents
7a, 7b, 7c: Each air vent control plate 8: Exhaust gas passage (muffler)
8a: exhaust gas inlet 8b: exhaust gas outlet
8c: gas switchboard

Claims (4)

In the system for controlling the temperature of the main battery of the hybrid vehicle,
An external air inflow pipe into which external air flows in, an air passage pipe connected to an air conditioner of the vehicle, and an exhaust gas heat exchanger installed in the exhaust gas passage of the vehicle are installed in the vehicle so as to communicate with the main battery. The system detects temperature, vehicle speed, indoor / outdoor air temperature, air conditioner and engine warm-up operation, exhaust gas temperature, air passage pipe inlet and outlet temperature connected to the main battery, and a sensing signal detected by the sensing unit. A controller for controlling the controller is installed in the vehicle, and under the control of the controller,
The main battery is cooled or heated by an air conditioner, a heater, and an exhaust gas heat exchanger of the external inlet pipe and the air conditioner according to the temperature of the main battery, the speed of the vehicle, the indoor / outdoor air temperature, and whether the air conditioner and the engine warm up are operated. The temperature control system of the plug-in hybrid and the hybrid vehicle main battery, characterized in that to ensure the normal fan operation of the exhaust heat exchanger and air conditioner according to the furnace pipe inlet and outlet temperature. The method of claim 1,
The cooling or heating process of the main battery under the control of the controller,
At a predetermined temperature or more of the main battery and a certain speed or more of the vehicle, the main battery is cooled by introducing external air through the external air inlet pipe,
The air conditioner of the air conditioner is operated above a predetermined temperature of the main battery and below a certain speed of the vehicle to cool the main battery by the cold air of the air conditioner introduced through the air passage pipe, and when the air conditioner is not operated, the heater of the air conditioner is In the operating state, the external air is introduced through the external air inlet pipe to cool the main battery,
When the air conditioner does not work or the temperature of the main battery is below a certain temperature after checking whether the air conditioner of the user,
When the user is not operating the air conditioner, the air cooler of the air flowing through the air passage pipe by operating the air conditioner of the air conditioner after blocking the indoor air vents more than a predetermined temperature of the main battery and a certain temperature below the outdoor temperature. After cooling the main battery and checking the warm-up request for starting the vehicle when the main battery is not above the predetermined temperature and below the predetermined temperature of the outdoor temperature, the heater of the air conditioner is arbitrarily turned off after the indoor blower is shut off before the engine is warmed up. It operates to heat the main battery by the heater heat of the heater flowing through the air passage pipe, and when the engine warm up, the main battery is heated by the heat of the exhaust gas introduced through the exhaust gas heat exchanger,
When the user operates the air conditioner of the air conditioner, the main battery is cooled by the air conditioner of the air conditioner above the predetermined temperature of the main battery, and the main battery is heated by the exhaust gas heat exchanger below the predetermined temperature of the main battery, and the user When the heater is operating, the plug-in is made by cooling the main battery with an external air inlet pipe at a predetermined temperature or more above the main battery, and heating the main battery with a heater of an air conditioner below the predetermined temperature of the main battery. Temperature control system for hybrid and hybrid vehicle main batteries. The method of claim 2,
The constant temperature or more of the main battery is ≥40 degrees, the constant speed or more of the vehicle is ≥60km / h, the less than the constant speed of the vehicle is <60km / h, and the constant temperature of the main battery is less than ≤ Temperature control system of the plug-in hybrid and hybrid vehicle main battery, characterized in that 5 degrees. The method according to any one of claims 1 to 3,
The main battery is distributed under the driver's seat and the passenger seat, respectively, or disposed between the driver's seat and the passenger seat in front of the vehicle or under the entire vehicle, wherein the temperature control system of the plug-in hybrid and the hybrid vehicle main battery.

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