JP2008189070A - Control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively suppress an increase in temperature of a battery regardless of an increase in temperature of gaseous fuel in a hybrid vehicle with a tank storing the gaseous fuel. <P>SOLUTION: A control device comprises: a tank storing gaseous fuel in a compressed state; an engine to be driven by the fuel stored in the tank; a motor for outputting drive force of the vehicle; a battery for supplying power to the motor; and a battery cooling means for blowing to the battery to cool it; and a threshold temperature setting means for setting the threshold temperature in response to the temperature selected by the tank temperature detection means. When the temperature detected by the detection means is high, the setting means sets the threshold temperature at a temperature lower than the case in which the temperature detected by the detection means is low. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a control device for a hybrid vehicle.

  As a fuel for an engine of a hybrid vehicle equipped with a traveling motor capable of outputting the driving force of the vehicle, a fuel using hydrogen has been proposed (Patent Document 1). By using a gaseous fuel such as hydrogen, a more environmentally friendly vehicle can be provided. Examples of the method for storing the gaseous fuel include a method for storing in a tank and a method for storing in a storage material (in the case of hydrogen, a hydrogen storage alloy or the like). In addition, the temperature of the battery rises due to the discharge, but if the temperature of the battery becomes excessively high, the battery may be deteriorated or the efficiency may be deteriorated. Thus, it has been proposed to blow and cool the battery according to the temperature of the battery of the hybrid vehicle (Patent Document 2).

JP 2001-258105 A JP 2005-63689 A

  When a tank is used as a method for storing gaseous fuel, in order to reduce the number of times the gaseous fuel is supplied to the tank, the gaseous fuel is compressed (for example, 35 MPa) and stored, and a large capacity tank is required. . Here, since the temperature rises when the gas is compressed, when the gaseous fuel is stored in the compressed state in the tank, the temperature of the gaseous fuel stored particularly during the replenishment of the gaseous fuel (at the time of fuel supply) increases. The temperature around the tank becomes high.

  In addition, in hybrid vehicles, a wider space is required for the battery for the traction motor, and in consideration of securing space in the engine room and cabin, a layout in which the tank and battery are arranged close to each other is required. In many cases it must be taken. As a result, the ambient temperature of the battery may increase due to the temperature increase of the gaseous fuel. In an environment where the ambient temperature of the battery has risen, even if the battery is blown and cooled, the cooling efficiency of the battery is poor, and the battery whose temperature has risen due to discharge cannot be effectively cooled. In addition, if the cooling capacity of the battery is uniformly increased, energy such as electric power is wasted, and the cost is increased.

  Therefore, an object of the present invention is to provide a control device that can more effectively suppress the temperature rise of the battery regardless of the temperature rise of the gas fuel in the hybrid vehicle including the tank for storing the gas fuel.

  According to the present invention, a gaseous fuel tank that stores gaseous fuel in a compressed state, an engine that is driven by the gaseous fuel stored in the gaseous fuel tank, a motor that can output a driving force of a vehicle, and the motor A control device for a hybrid vehicle, comprising: a battery that supplies electric power; tank temperature detection means for detecting the temperature of the gaseous fuel tank; battery temperature detection means for detecting the temperature of the battery; and the battery temperature Battery cooling means for blowing and cooling the battery when the temperature detected by the detection means is higher than a threshold temperature; threshold temperature setting means for setting the threshold temperature according to the temperature detected by the tank temperature detection means; The threshold temperature setting means lowers the threshold temperature when the temperature detected by the tank temperature detection means is higher than when the temperature is low. Control device is provided which is characterized in that setting.

  According to this configuration, the threshold temperature setting unit sets the threshold temperature lower when the temperature detected by the tank temperature detection unit is high than when the temperature is low. For this reason, when the ambient temperature of the battery is high due to the rise in temperature of the gaseous fuel stored in the gaseous fuel tank, the cooling of the battery by the battery cooling means is performed at a temperature where the temperature of the battery is lower. Since it is started, the temperature rise of the battery can be more effectively suppressed regardless of the temperature rise of the gaseous fuel.

  Further, according to the present invention, a gaseous fuel tank for storing gaseous fuel in a compressed state, an engine driven by the gaseous fuel stored in the gaseous fuel tank, a motor capable of outputting a driving force of a vehicle, A hybrid vehicle control device comprising: a battery for supplying electric power to a motor; tank temperature detection means for detecting a temperature of the gaseous fuel tank; battery temperature detection means for detecting the temperature of the battery; Battery cooling means for blowing and cooling the battery when the temperature detected by the battery temperature detection means is higher than a threshold temperature; and fuel supply detection means for detecting fuel gas supply to the gas fuel tank; And the battery cooling means sends air to the battery when the fuel supply detecting means detects the fuel supply. It is subjected.

  According to this configuration, the battery cooling unit blows air to the battery when the fuel supply detecting unit detects the fuel supply, and therefore the battery cooling unit is prepared in preparation for the temperature increase of the gaseous fuel caused by the fuel supply. It can cool and can suppress the temperature rise of a battery more effectively irrespective of the temperature rise of gaseous fuel.

  Further, according to the present invention, a gaseous fuel tank for storing gaseous fuel in a compressed state, an engine driven by the gaseous fuel stored in the gaseous fuel tank, a motor capable of outputting a driving force of a vehicle, A hybrid vehicle control device comprising: a battery for supplying electric power to a motor; tank temperature detection means for detecting a temperature of the gaseous fuel tank; battery temperature detection means for detecting the temperature of the battery; Battery cooling means for blowing and cooling the battery when the temperature detected by the battery temperature detection means is higher than a threshold temperature, and the battery cooling means is high when the temperature detected by the battery temperature detection means is high Is provided with a control device characterized in that the air volume is increased as compared with a low case.

  According to this configuration, when the temperature detected by the battery temperature detecting means is high, the battery cooling means increases the air volume as compared with the case where the temperature is low. Regardless, the temperature rise of the battery can be more effectively suppressed.

  In the present invention, the battery cooling means may employ a configuration including an electric fan.

  In the present invention, the hybrid vehicle includes a pressure reducing valve provided in a fuel supply passage between the gaseous fuel tank and the engine, and the battery cooling means is a duct that takes in air blown by the electric fan. It is possible to adopt a configuration in which the pressure reducing valve is disposed in the duct or in the vicinity of the opening end.

  According to this configuration, it is possible to utilize the cold heat accompanying the pressure reduction of the gaseous fuel by the pressure reducing valve for cooling the battery, and it is possible to more effectively suppress the temperature rise of the battery.

  In the present invention, the hybrid vehicle includes a liquid fuel tank that stores liquid fuel, and the engine selects any one of the gaseous fuel and the liquid fuel stored in the liquid fuel tank. The control device may further include a fuel selection unit that selects the gaseous fuel as the fuel for the engine when the electric fan blows air.

  According to this configuration, it is possible to utilize the cold heat accompanying the pressure reduction of the gaseous fuel by the pressure reducing valve for cooling the battery, and it is possible to more effectively suppress the temperature rise of the battery.

  As described above, according to the present invention, in a hybrid vehicle having a tank for storing gaseous fuel, in a hybrid vehicle having a tank for storing gaseous fuel, the temperature of the battery rises regardless of the temperature rise of the gaseous fuel. Can be suppressed more effectively.

<First Embodiment>
FIG. 1 is a block diagram of a hybrid vehicle A to which the control device of the present invention can be applied. Although the hybrid vehicle A is a series hybrid type hybrid vehicle, the present invention is also applicable to other types of hybrid vehicles. The hybrid vehicle A includes two left and right front wheels 1, two right and left rear wheels 2, and a differential device 3 provided on a drive shaft 1a of the front wheel 1, and travels with the front wheels 1 as drive wheels and steering wheels. The front part of the hybrid vehicle A is an engine room, the middle part is a cabin, and the rear part is a trunk.

  The hybrid vehicle A includes a gaseous fuel tank 4 that stores gaseous fuel in a compressed state. The gaseous fuel is, for example, hydrogen or natural gas, and is accumulated in the gaseous fuel tank 4 at a full pressure of 35 MPa, for example. The hybrid vehicle A includes a liquid fuel tank 5 that stores liquid fuel. The liquid fuel is, for example, gasoline or light oil.

  In the case of the present embodiment, the engine (internal combustion engine) 6 selectively burns either the gaseous fuel stored in the gaseous fuel tank 4 or the liquid fuel stored in the liquid fuel tank 5 as fuel. It is a dual fuel engine to be driven, here a rotary engine. However, the present invention is also applicable to a hybrid vehicle using an engine that uses only gaseous fuel as fuel.

  A pressure reducing valve 4 a is provided in a pipe 4 b serving as a fuel supply passage between the gaseous fuel tank 4 and the engine 6. The pressure reducing valve 4a depressurizes the gaseous fuel stored in the gaseous fuel tank 4 to 0.6 MPa, for example, and supplies it to the engine 6.

  The differential device 3 is connected to a motor M1 that can output the driving force of the hybrid vehicle A. The motor M1 is, for example, a synchronous motor, is driven by receiving electric power from the battery 7, and gives a rotational force to the drive shaft 1a by its output. A reduction gear can be provided between the motor M1 and the differential 3.

  A motor M <b> 2 is connected to the output shaft of the engine 6. The motor M2 is, for example, a synchronous motor, and is driven by the engine 6 to generate power, supply electric power to the motor M1, and function as a generator that charges the battery 7. The motor M2 receives power from the battery 7 when the engine 6 is started and functions as a starter motor.

  The inverter 8 is electrically connected to the motors M1 and M2 and the battery 7. The inverter 8 can convert the DC power from the battery 7 into AC power and drive the motors M1 and M2. Further, the inverter 8 can charge the battery 7 by converting AC power generated by the motor M2 into DC power. Further, the inverter 8 can once convert the AC power generated by the motor M2 into DC power, and convert it again into AC power to drive the motor M1.

  In the case of this embodiment, in order to secure an engine room and a guest room, the gaseous fuel tank 4 and the battery 7 are disposed close to each other, the gaseous fuel tank 4 is disposed at the rear of the hybrid vehicle A, and the battery 7 is disposed in the hybrid. The vehicle A is disposed in the middle (under the rear seat). The arrangement of the gaseous fuel tank 4 and the battery 7 close to each other means that the gaseous fuel tank 4 and the battery 7 are arranged so that the heat of the gaseous fuel stored in the gaseous fuel tank 4 affects the temperature rise of the battery 7. It means that it is arranged. For example, when both the gaseous fuel tank 4 and the battery 7 are arranged in any one of the front part, the middle part, and the rear part of the hybrid vehicle A, two adjacent parts (for example, the front part, the middle part, and the middle part) In the configuration in which the gaseous fuel tank 4 and the battery 7 are respectively disposed in the rear part), it is generally evaluated that the heat of the gaseous fuel stored in the gaseous fuel tank 4 affects the temperature rise of the battery 7. This corresponds to the case where the gaseous fuel tank 4 and the battery 7 are arranged close to each other.

  The battery 7 is accommodated in the case 7a. The case 7a is provided with an electric fan 9, and the battery 7 is cooled by blowing air (outside air) to the battery 7 in the case 7a. The electric fan 9 is provided with a cylindrical duct 9 a that takes in air that the electric fan 9 blows to the battery 7.

  In the case of this embodiment, the pressure reducing valve 4a is arranged in the internal space of the duct 9a. When the gaseous fuel is used as the fuel for the engine 6, cold pressure is generated in the pressure reducing valve 4a due to the pressure reduction of the gaseous fuel by the pressure reducing valve 4a. For this reason, the air blown to the battery 7 by the electric fan 9 is cooled by the cold heat, and the battery 7 can be cooled more effectively. Thus, in the present embodiment, the cold heat accompanying the decompression of the gaseous fuel by the pressure reducing valve 4a can be utilized for cooling the battery 7, and the temperature rise of the battery 7 can be further effectively suppressed. Note that the pressure reducing valve 4a may be disposed in the vicinity of the opening end of the duct 9a. In this case, the cooling effect of the blown air using the cold heat of the pressure reducing valve 4a can be obtained.

  FIG. 2 is a block diagram of the control device 100 according to an embodiment of the present invention. A PCM (powertrain control module) 101 includes a CPU, a RAM that stores CPU calculation results, a storage unit represented by a ROM that stores programs executed by the CPU, and an interface with an external device. Executes processing to be described later, and controls the inverter 8, the fuel injection valves 6a and 6b of the engine 6, the throttle valve 6c, and the spark plug 6d. The fuel injection valve 6a injects gaseous fuel into the cylinder, and the fuel injection valve 6b performs port injection of liquid fuel.

  The tank temperature sensor 102 is disposed, for example, in the vicinity of the gaseous fuel tank 4 or the gaseous fuel tank 4, and detects the temperature discharged from the gaseous fuel tank 4 by the temperature of the gaseous fuel in the gaseous fuel tank 4, a thermocouple, etc. And functions as a tank temperature detecting means. The temperature of the gaseous fuel tank 4 can be estimated from, for example, the pressure of the gaseous fuel in the gaseous fuel tank 4, and the configuration for estimating the temperature of the gaseous fuel tank 4 from physical quantities other than the temperature is also a tank temperature detecting means. include.

  The tank pressure sensor 103 is, for example, a sensor that is disposed inside or at the main valve of the gaseous fuel tank 4 and detects the atmospheric pressure of the gaseous fuel in the gaseous fuel tank 4. The battery temperature sensor 104 is, for example, a battery 7 or a thermistor, a thermocouple, or the like that detects the temperature of the battery 7 and functions as battery temperature detection means. Similar to the tank temperature detecting means, the battery temperature detecting means includes a configuration for estimating the temperature of the battery 7 from a physical quantity other than the temperature.

  The battery current / voltage sensor 105 is a sensor used to calculate the amount of power stored in the battery 7. The PCM 101 can calculate the charged amount of the battery 7 from the open circuit voltage of the battery 7 and the time integration value of the charge / discharge current. The fuel changeover switch 106 is provided at the driver's seat, and is a switch for the driver to select the fuel for the engine 6 between gas fuel and liquid fuel.

  The vehicle speed sensor 107 is a sensor for detecting the traveling speed of the hybrid vehicle A, for example, a sensor for detecting the rotational speed of the drive shaft 1a. The accelerator opening sensor 108 is a sensor that detects the amount of operation of the accelerator pedal by the driver.

  The PCM 101 controls the inverter 8, the electric fan drive circuit 109, the fuel injection valves 6a and 6b, the throttle valve 6c, and the spark plug 6d based on the detection results of these sensors. The electric fan drive circuit 109 uses the battery 7 as a power source to operate, stop, and adjust the air volume during operation.

The PCM 101 selects and executes a traveling mode from a plurality of types of traveling modes as the traveling control of the hybrid vehicle A. For example, the travel mode is selected from the following first to third travel modes and executed.
-1st driving mode (at the time of vehicle start-up, low demand torque)
This is a travel mode in which electric power is supplied from only the battery 7 to the motor M1, and the engine 6 is stopped. This is because the driving of the engine 6 at a low rotation and a low load is stopped and the engine 6 is driven in a more efficient region.
・ Second travel mode (medium required torque)
This is a traveling mode in which the engine 6 is driven and electric power is supplied to the motor M1 by the electric power generated by the motor M2. In this travel mode, power is not supplied from the battery 7 to the motor M1. Therefore, this is a travel mode in which the battery 7 is not discharged. When the amount of power stored in the battery 7 is small, a part of the power generated by the motor M2 is supplied to the battery 7 and charged.
・ Third travel mode (at high demand torque)
This is a traveling mode in which the engine 6 is driven and the electric power generated by the motor M2 and the battery 7 are used to supply electric power to the motor M1.

  Next, the control content related to cooling of the battery 7 among the control content by the control device 100 will be described. FIG. 3A is a flowchart showing battery cooling processing executed by the CPU of the PCM 101. In S1, the detection result of the temperature of the gaseous fuel tank 4 is acquired from the tank temperature sensor 102, and the detection result of the temperature of the battery 7 is acquired from the battery temperature sensor 104, respectively. In S2, a threshold temperature t is set. The threshold temperature t is set according to the relationship shown in FIG. 3B according to the temperature detected by the tank temperature sensor 102 acquired in S1.

  As shown in FIG. 3B, the threshold temperature t is lower when the temperature of the gaseous fuel tank 4 is relatively higher than when it is low. Specifically, the temperature of the gaseous fuel tank 4 is constant until T1, but thereafter, the threshold temperature t is set so as to decrease as the temperature of the gaseous fuel tank 4 increases.

  In S2, the threshold temperature t corresponding to the temperature detected by the tank temperature sensor 102 acquired in S1 is set from the relationship between the threshold temperature t and the temperature of the gaseous fuel tank 4 shown in FIG.

  In S3, it is determined whether or not the detection result of the temperature of the battery 7 acquired in S1 is higher than the threshold temperature set in S2. If yes, go to S4, otherwise go to S5. In S4, the electric fan 9 is operated. Thereby, the electric fan 9 blows air to the battery 7 to cool the battery 7. In S5, the electric fan 9 is stopped. Thus, one unit of processing is completed.

  Thus, in this embodiment, when the temperature of the gaseous fuel tank 4 is high, the threshold temperature t is set lower than when the temperature is low. For this reason, when the ambient temperature of the battery 7 is high due to the rise in temperature of the gaseous fuel stored in the gaseous fuel tank 4, the cooling of the battery 7 by the electric fan 9 is started at a lower temperature of the battery 7. Therefore, the temperature rise of the battery 7 can be more effectively suppressed regardless of the temperature rise of the gaseous fuel. In other words, when the temperature of the gaseous fuel tank 4 is high, the cooling of the battery 7 is started early, and the temperature rise of the battery 7 is more effectively suppressed to avoid unnecessary power consumption and within a necessary range. it can.

Second Embodiment
FIG. 4 is a flowchart showing a battery cooling process according to the second embodiment of the present invention, which is executed by the CPU of the PCM 101. In S11, a fuel supply detection process is executed. Here, supply of gaseous fuel to the gaseous fuel tank 4 is detected. In the case of the present embodiment, referring to the detection result of the pressure of the gaseous fuel by the tank pressure sensor 103 within a certain period (for example, several tens of seconds or several minutes), fuel supply is performed when the pressure of the gaseous fuel has increased. Judge that there is. The detection result for a certain period is updated by acquiring and storing the detection result of the tank pressure sensor 103 every time the process of S11 is performed, and deleting the oldest detection result.

  In S12, as a result of the fuel supply detection process in S11, if there is fuel supply, the process proceeds to S13, and if there is no fuel supply, the process proceeds to S14. In S13, the electric fan 9 is operated. Here, the electric fan 9 is set to operate continuously for a predetermined time (for example, 10 minutes). The predetermined time can be managed separately by timer processing. Thereby, the electric fan 9 blows air to the battery 7 to cool the battery 7.

  In S14, the detection result of the temperature of the battery 7 is acquired from the battery temperature sensor 104. In S15, it is determined whether or not the detection result of the temperature of the battery 7 acquired in S14 is higher than a predetermined threshold temperature t (fixed value). If applicable, the process proceeds to S16, and if not, the process proceeds to S17. In S16, the electric fan 9 is operated.

  In S17, it is determined whether or not the electric fan 9 is continuously operated by the process in S13. If applicable, the process of one unit is terminated. If not, the process proceeds to S18. In S18, the electric fan 9 is stopped. Thus, one unit of processing is completed.

  As described above, in this embodiment, when the fuel supply of the gaseous fuel is detected, the battery 7 is blown by the electric fan 9, so that the battery 7 is prepared in preparation for the temperature rise of the gaseous fuel inevitably caused by the fuel supply of the gaseous fuel. The temperature of the battery 7 can be more effectively suppressed regardless of the temperature rise of the gaseous fuel. That is, in anticipation that the temperature of the battery 7 is likely to rise when the gaseous fuel tank 4 is supplied, the cooling of the battery 7 is started in advance, so that the temperature rise of the battery 7 is more effectively and wasted. Electric power consumption can be eliminated and controlled within a necessary range.

  Although the threshold temperature t is a fixed value in the second embodiment, the first embodiment and the second embodiment are combined, and the threshold temperature t is set according to the temperature of the gaseous fuel tank 4 as in the first embodiment. It is good also as a structure to set.

<Third Embodiment>
FIG. 5A is a flowchart showing a battery cooling process according to the third embodiment of the present invention, which is executed by the CPU of the PCM 101. In S21, the detection result of the temperature of the gaseous fuel tank 4 is acquired from the tank temperature sensor 102, and the detection result of the temperature of the battery 7 is acquired from the battery temperature sensor 104, respectively. In S22, it is determined whether or not the detection result of the temperature of the battery 7 acquired in S21 is higher than a predetermined threshold temperature t (fixed value). If yes, go to S23, otherwise go to S24.

  In S23, processing for setting the air volume of the electric fan 9 is performed. The air volume is set according to the relationship shown in FIG. 5B according to the temperature detected by the tank temperature sensor 102 acquired in S21.

  As shown in FIG. 5B, the set air volume of the electric fan 9 is made larger when the temperature of the gaseous fuel tank 4 is relatively higher than when it is low. Specifically, although the temperature of the gaseous fuel tank 4 is constant until T2, the air volume is set so as to increase as the temperature of the gaseous fuel tank 4 increases thereafter.

  In S23, the air volume corresponding to the temperature detected by the tank temperature sensor 102 acquired in S21 is set from the relationship between the air volume shown in FIG. 5B and the temperature of the gaseous fuel tank 4.

  In S24, the electric fan 9 is operated with the air volume set in S23. Thereby, the electric fan 9 blows air to the battery 7 to cool the battery 7. In S25, the electric fan 9 is stopped. Thus, one unit of processing is completed.

  As described above, according to this embodiment, when the temperature of the battery 7 is high, the air volume of the electric fan 9 is increased as compared with the case where the battery 7 is low. The temperature rise of the battery 7 can be more effectively suppressed. Moreover, the temperature rise of the battery 7 can be suppressed more effectively, and wasteful power consumption can be eliminated to a necessary extent.

  Although the threshold temperature t is a fixed value in the third embodiment, the first embodiment and the third embodiment are combined, and the threshold temperature t is set according to the temperature of the gaseous fuel tank 4 as in the first embodiment. It is good also as a structure to set. Moreover, it is good also as a structure which act | operates the electric fan 9 at the time of fuel supply of gaseous fuel combining 2nd Embodiment and 3rd Embodiment.

<Fourth embodiment>
FIG. 6 is a flowchart showing a fuel selection process according to the fourth embodiment of the present invention, which is executed by the CPU of the PCM 101. The fuel selection process is a process of selecting either gaseous fuel or liquid fuel as the fuel for the engine 6, and is combined with the first to third embodiments.

  In S31, a gaseous fuel or a liquid fuel is automatically selected according to the state of the vehicle (remaining amount of each fuel, content of travel control, etc.). In S32, it is determined whether or not the fuel of the engine 6 can be switched (whether the remaining amount of each fuel is sufficient, whether or not there is any problem in traveling control, etc.). If applicable, the process proceeds to S33, and if not, one unit of processing is terminated.

  In S33, it is determined whether or not an occupant has operated the fuel selector switch 106. If there is an operation, the process proceeds to S34, and if there is no operation, the process proceeds to S35. In S34, the fuel of the engine 6 is switched.

  In S35, it is determined whether or not the electric fan 9 is operating. If applicable, the process proceeds to S36, and if not, one unit of processing is terminated. In S36, the fuel of the engine 6 is automatically selected as the gaseous fuel. Thus, one unit of processing is completed.

  Thus, in this embodiment, gaseous fuel is automatically selected as the fuel for the engine 6 when the electric fan 9 blows air. When the fuel of the engine 6 is gaseous fuel, the cold heat accompanying the decompression of the gaseous fuel by the pressure reducing valve 4a can be utilized for cooling the battery 7, and the temperature rise of the battery 7 can be more effectively suppressed.

1 is a block diagram of a hybrid vehicle A to which a control device of the present invention can be applied. It is a block diagram of control device 100 concerning one embodiment of the present invention. (A) is a flowchart which shows the battery cooling process which CPU of PCM101 performs, (b) is explanatory drawing of threshold temperature t. It is a flowchart which shows the battery cooling process which concerns on 2nd Embodiment of this invention which CPU of PCM101 performs. (A) is a flowchart which shows the battery cooling process which concerns on 3rd Embodiment of this invention which CPU of PCM101 performs, (b) is explanatory drawing of the air volume of the electric fan 9. FIG. It is a flowchart which shows the fuel selection process which concerns on 4th Embodiment of this invention which CPU of PCM101 performs.

Explanation of symbols

A Hybrid vehicle M1, M2 Motor 4 Gaseous fuel tank 4a Pressure reducing valve 5 Electric fan 6 Engine 7 Battery 100 Controller 102 Tank temperature sensor 103 Tank pressure sensor 104 Battery temperature sensor

Claims (6)

A gaseous fuel tank for storing gaseous fuel in a compressed state, an engine driven by the gaseous fuel stored in the gaseous fuel tank, a motor capable of outputting a driving force of a vehicle, and a battery for supplying electric power to the motor A control device for a hybrid vehicle comprising:
Tank temperature detecting means for detecting the temperature of the gaseous fuel tank;
Battery temperature detecting means for detecting the temperature of the battery;
Battery cooling means for blowing and cooling the battery when the temperature detected by the battery temperature detection means is higher than a threshold temperature;
Threshold temperature setting means for setting the threshold temperature according to the temperature detected by the tank temperature detection means;
With
The threshold temperature setting means sets the threshold temperature lower when the temperature detected by the tank temperature detection means is higher than when the temperature is low. A gaseous fuel tank for storing gaseous fuel in a compressed state, an engine driven by the gaseous fuel stored in the gaseous fuel tank, a motor capable of outputting a driving force of a vehicle, and a battery for supplying electric power to the motor A control device for a hybrid vehicle comprising:
Tank temperature detecting means for detecting the temperature of the gaseous fuel tank;
Battery temperature detecting means for detecting the temperature of the battery;
Battery cooling means for blowing and cooling the battery when the temperature detected by the battery temperature detection means is higher than a threshold temperature;
Fuel supply detection means for detecting fuel supply of the gaseous fuel to the gaseous fuel tank;
With
The said battery cooling means ventilates to the said battery, when the said fuel supply detection means detects the said fuel supply, The control apparatus characterized by the above-mentioned. A gaseous fuel tank for storing gaseous fuel in a compressed state, an engine driven by the gaseous fuel stored in the gaseous fuel tank, a motor capable of outputting a driving force of a vehicle, and a battery for supplying electric power to the motor A control device for a hybrid vehicle comprising:
Tank temperature detecting means for detecting the temperature of the gaseous fuel tank;
Battery temperature detecting means for detecting the temperature of the battery;
Battery cooling means for blowing and cooling the battery when the temperature detected by the battery temperature detection means is higher than a threshold temperature;
With
The battery cooling means is
The control device characterized in that when the temperature detected by the battery temperature detecting means is high, the air volume is increased as compared with a case where the temperature is low.   The control apparatus according to claim 1, wherein the battery cooling unit includes an electric fan. The hybrid vehicle includes a pressure reducing valve provided in a fuel supply passage between the gaseous fuel tank and the engine,
The battery cooling means is
A duct for taking in air blown by the electric fan;
The control device according to claim 4, wherein the pressure reducing valve is disposed in the duct or in the vicinity of the opening end. The hybrid vehicle includes a liquid fuel tank that stores liquid fuel;
The engine is a dual fuel engine that selectively drives either the gaseous fuel or the liquid fuel stored in the liquid fuel tank as fuel,
The controller is
The control device according to claim 5, further comprising a fuel selection unit that selects the gaseous fuel as fuel for the engine when the electric fan blows air.

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