WO2003064199A1

WO2003064199A1 - Battery cooler for vehicle

Info

Publication number: WO2003064199A1
Application number: PCT/JP2002/009662
Authority: WO
Inventors: Hideki Nagano; Daisuke Araki
Original assignee: Zexel Valeo Climate Control Corporation
Priority date: 2002-01-25
Filing date: 2002-09-20
Publication date: 2003-08-07
Also published as: JPWO2003064199A1

Abstract

A battery cooler for vehicle exhibiting high cooling performance and safety and advantageous for cost reduction, enlargement of room volume and weight reduction. The battery cooler (1) for vehicle, being employed in a vehicle having a motor driven through a battery (2) as at least one traveling drive source, comprises a fan unit (5) including a fan (11) driven by a specified drive source to generate wind, a duct (16) for introducing wind generated from the fan unit (5) to the compartment (3), a space (17) for hous the battery (2), a duct (18) for introducing wind generated from the fan unit (5) to the hous space (17), a switching door (13) being driven by a specified drive source to vary the volume of air being supplied to the duct (16) for the compartment and the duct (18) for the battery, a controller for controlling the fan (11) and the switching door (13), and a mechanism (40) for preventing backflow of air from the housing space (17) to the compartment (3).

Description

Description Battery cooling device for vehicles Technical field

The present invention relates to a battery cooling device for a vehicle used in a vehicle such as a hybrid vehicle or an electric vehicle that uses an electric motor driven by a battery as a driving source for traveling. Background art

A battery cooling device for a vehicle disclosed in Japanese Patent Application Laid-Open No. 9-177552 stores a battery provided in an engine room in a cano or battery pack with a gap around the battery. At the same time, this battery case is provided with an outside air introduction duct with an air introduction port at the tip and an exhaust duct with a fan, and the sensor that monitors the temperature of the battery is more sensitive than the specified temperature. And a control means for driving the fan, wherein the fan is activated when the temperature of the temperature sensor exceeds a predetermined temperature, and the battery is cooled by introducing outside air into the battery case. It is. Claim 3 of the publication discloses a structure in which a SIS duct for introducing air from the air conditioner is provided in the battery case so that cool air from the air conditioner can be introduced into the battery case.

In addition, Japanese Patent Application Laid-Open Nos. 5-193334 and 7-304323 disclose cooling devices for automobiles equipped with a driving motor.

However, in the configuration according to claim 1 of the battery cooling device for a vehicle disclosed in Japanese Patent Application Laid-Open No. 9-177552, the outside air is introduced into the battery case, so There are concerns about reduced cooling capacity and inhalation of rainwater. In the configuration according to the third aspect, the inside of the battery case and the vehicle compartment are connected to an air conditioning duct, The air in the battery case may flow back into the vehicle cabin because it communicates with the control unit through the unit case and the air-conditioning air outlet. Since hydrogen gas may be generated from the battery, it is not preferable that the air in the battery case flows into the vehicle interior.

In addition, the structures disclosed in JP-A-5-193334, JP-A-7-304432, etc., have an increase in cost, a decrease in indoor volume due to an increase in the number of parts, etc. An increase in weight is expected.

Therefore, an object of the present invention is to provide a battery cooling device for a vehicle which is advantageous in battery cooling performance and safety, and is advantageous for cost reduction, indoor enlargement, and weight reduction. Disclosure of the invention

In order to solve the above-mentioned object, the present invention relates to a vehicle battery cooling device used in a vehicle in which an electric motor driven by a battery is at least one of driving power sources, A device that includes a fan driven by a drive source to generate wind, a vehicle air duct that guides the wind generated by the air leakage device 3 to the vehicle compartment, a storage space in which the volume 3 is stored, and the air blowing device. A battery air duct that guides the wind generated by the device to the space inside the air heater, and a switch that is driven by a predetermined drive source and changes the air volume to the car key air duct and the 1B battery air duct according to its position. A door, a control device for controlling the knitting 3 fan and the knitting 3 switching door, and a backflow prevention device for preventing backflow of air from the 1513 storage space to the fil3 compartment.

According to this, a part or all of the air generated by the air blower provided for improving the comfort of the vehicle interior can be used for cooling the battery, so that a new cooler is mounted. Without cooling the battery. As a result, in a car, an electric vehicle, an electric vehicle, and the like, it is possible to realize a reduction in cost, an increase in the number of passengers in the room due to a reduction in the space of the mounted equipment, and a reduction in the weight of the vehicle body. In order to prevent the air in the storage space where the battery is stored from flowing back through the battery ventilation duct and into the passenger compartment, a backflow preventing means such as a door or an itih valve is provided to prevent the battery from being returned from the battery. It is possible to prevent the generated hydrogen gas or the like from filling the vehicle interior. Thereby, safety can be improved.

Further, the present invention is a vehicle battery cooling device used in a vehicle in which an electric motor driven by a battery is at least one driving source for traveling, and includes a fan driven by a predetermined driving source. A blower that generates wind, a car key wind duct that guides the wind generated by the knitting 3 blower to the vehicle compartment, a storage space in which the battery is stored, and a knitting 3 that generates the wind generated by the blower. A battery air duct that leads to the storage space, a switching door that is driven by a predetermined drive source and changes the amount of air to the iffi car air duct and the fiffi battery air duct according to its position, and the fan and tiff 3 switching door And a backflow prevention key for preventing backflow of air from the storage space to the front room. The so-called 3 control device is configured such that when the 3 fan is stopped, the battery air duct is As the chain in which Gosuru the iI3 switching door.

According to this, in addition to the effect obtained by the above configuration, it is possible to improve the consistency between the operation of the switching door and the fan, and to more reliably prevent the backflow of air from the inside of the vehicle to the interior of the vehicle. Can be.

Further, the present invention relates to a vehicle battery cooling device used in a vehicle in which an electric motor driven by a nosote is at least one driving source for traveling, and a fan driven by a predetermined driving source. A blower that generates wind, a blower duct that guides the wind generated by the blower to a vehicle compartment, a storage space in which the battery is stored, and a wind generated by the blower. A battery ventilation duct that leads to the interior space, a switching door that is driven by a predetermined drive source and changes the volume of air supplied to the vehicle ventilation duct and the tiiffi battery ventilation duct depending on the position, and the fan and 1513 switching door. A control device for controlling air flow, a backflow prevention leak for preventing a backflow of air from the interior space to the knitting compartment, and an engine operating state eating loss detecting means for ending the operating state of the engine, 3 The control device controls the switching door so that the battery air duct is opened for a predetermined period of time after the engine start is detected by the f! 3 engine operation status penn means. Together, it drives the three fans.

According to this, the battery is actively cooled at the time of engine start, which is expected to generate a large amount of heat. Therefore, in addition to the effect of the above-described brute force, the protection property and the life of the battery can be further improved.

Further, the present invention is a vehicular battery cooling device used in a vehicle in which an electric motor driven by a notebook has at least one driving source for traveling, and is driven by a predetermined driving source. A blower that generates a wind with a fan, a cabin blower duct that guides the wind generated by the fi¾ blower to the cabin, a storage space in which the battery is stored, and a volume generated by the blower. A ventilation duct that guides the air to the storage space, a switching door that is driven by a predetermined drive source and changes the amount of ventilation to the compartment ventilation duct and the battery ventilation duct depending on the position, and the fan and the 513 switching door. A control device for controlling, a backflow prevention leak for preventing a backflow of air from the storage space to the cabin, and an engine operation state for removing an operation state of the engine. Voltage control means for detecting the voltage of the battery, and the knitting control device detects the engine by the Hffit ^ n means after the engine is stopped by the knitting means. The control of the leakage switching door and the simple fan is performed within the range where the voltage does not fall below the predetermined value.

According to this, battery cooling is continued within a range in which a predetermined voltage is maintained even after the engine is stopped at the end of operation or the like, so that in addition to the effects of the above-described configuration, battery protection, etc. Can be improved.

Further, in any one of the above inventions, the present invention further comprises a ¾gennΠ means for detecting the temperature of the battery or the area around the battery, and the cage 3 control device, based on the signal mocked by the detecting means, controls the fan and the fan. It is desirable to control at least one of the switching doors. Since it is possible to determine whether cooling of the battery is necessary from around the battery or the battery, it is possible to blow air toward the battery at an appropriate time. The knitting 3 air blower is preferably an air conditioner including at least an evaporator, and the knitting 3 air conditioner is arranged on the rear side of the vehicle body to cool the rear seat side of the passenger compartment. More preferably, it is.

In this way, by introducing the cold air from the air conditioner, particularly the air conditioner (rear air conditioner) used for cooling the rear seats, to the battery, the piping structure can be simplified, and when the battery is cooled. The rear air conditioner distributes the cool air to the battery, but the front air conditioner normally air-conditions the cabin, so the comfort of the cabin is not impaired.

Further, when the air blower is an air conditioner, the air conditioner includes the temperature control means, and a compressor for pumping the refrigerant over the evaporator. The compressor may be controlled based on the received signal.

For example, when it is necessary to cool the battery, the cooling capacity of the compressor and the cooling capacity can be increased to increase the cooling capacity of the notebook and maintain the comfort of the cabin.

In addition, the air blower in Chapter 3 may be an air purifier or a ventilator.

Even if the air cleaner or ventilator generates the air, it still has enough energy to cool the battery.

In addition, cage 3 backflow prevention leakage is caused by displacing and opening the battery ventilation duct when ventilation from the equipment 3 ventilation system to the battery ventilation duct, and at the time of non-ventilation to the battery ventilation duct 3 It is preferable to include a door that is displaced by its own weight or an elastic member, or a combination thereof, and closes the battery ventilation duct. According to this, the door is automatically displaced in response to switching between ventilation and non-ventilation to the battery ventilation duct, and the battery ventilation duct is opened and closed. This prevents backflow of air from the storage space into the vehicle interior without using a drive unit such as a motor. be able to.

In addition, the knitting control device preferably rotates the fan whenever the switching door for knitting 3 is located at a position where the battery ventilation duct is opened.

Thus, the age of the operation of the switching door and the fan can be maintained, and the backflow of air from the storage space into the vehicle interior can be prevented.

Further, the control device of the restaurant 3 may control the if 3 switching door so that the so-called 3-battery exhaust duct is opened when the rotation speed of its own fan is the maximum value. If the fan is driven at the maximum rotational speed, it is expected that the heat generated by the notebook will be large and that there will be sufficient air flow into the cabin, so the switching door will be controlled as described above to control the battery duct. By opening a certain amount of, it is possible to efficiently protect the notebook.

Further, the knitting 3 control device, when the fineness of the fan 3 is not the maximum value and the knitting device air blowing duct is open, the rotation speed of the fan when the battery air blowing duct is closed is reduced. The control may be made to be larger than the above. According to this, when it is necessary to cool the battery when the fan is driven at a rotation speed smaller than the maximum value, the cooling speed is lower than the rotation speed of the fan at normal time, that is, when the battery air duct is closed. Since the fan is rotated at a high rotation speed, it is possible to prevent shortage of ventilation to the vehicle interior.

Further, it is preferable that the airflow duct of the battery is provided in a place other than the cabin and the cargo room.

According to this, since the chance of damaging the air blow duct can be reduced, the durability and safety of the system can be improved.

In addition, an air outlet that blows air from the knottery duct into the rts storage space and an exhaust port that guides air inside the knitting space to the outside are formed at positions substantially facing the battery. Good to be.

According to this, the air from the air blower is efficiently charged. As a result, the cooling effect of the battery can be increased.

Further, a plurality of the outlets may be provided.

According to this, since the heat can be applied to the battery from various angles, the cooling effect of the battery can be increased.

Further, the knitting 3 blower may include an air intake switching means for selectively taking air into the unit from at least two of the vehicle compartment, the caustic chamber, and the outside of the car. Is an air conditioner. If the air conditioner is operating at the maximum cooling capacity and it is determined from the information obtained by the specified means that cooling of the battery is necessary, The means may take in air outside the vehicle.

When the air conditioner is operating at the maximum cooling capacity, the room temperature is often high, so at this time the effect of cooling the battery can be enhanced by taking in the air outside the vehicle into the blower. . BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a diagram showing a structure of a vehicular battery cooling device according to a first difficulty mode of the present invention. FIG. 2 is a diagram showing the structure of the backflow prevention door. FIG. 3 is a diagram showing a configuration of a control system in the vehicle battery cooling device according to the present invention. FIG. 4 is a flowchart showing the control performed by the ECU. FIG. 5 is a flowchart showing the control performed by the ECU. FIG. 6 is a flowchart showing the control performed by the ECU. FIG. 7 is a flowchart showing control performed by the ECU. FIG. 8 is a flowchart showing control performed by the ECU. FIG. 9 is a flowchart showing the control performed by the ECU. FIG. 10 is a flowchart showing the control performed by the ECU. FIG. 11 is a diagram showing a structure of a vehicle battery cooling device according to a second embodiment. FIG. 12 is a diagram showing a structure of a battery vent in the vehicle battery cooling device according to the third embodiment. FIG. 13 shows a structure of an intake duct in a vehicle battery cooling device according to a fourth embodiment. FIG. FIG. 14 is a flowchart showing the control performed by the ECU in the fourth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The vehicle battery cooling device 1 according to the first embodiment of the present invention shown in FIG. 1 is used in a vehicle in which the battery 2 is at least one of its driving sources, that is, a high-priority vehicle, a sword vehicle, an electric vehicle, and the like. The rear compartment 4 includes a rear control 5 arranged on the rear side of the vehicle for cooling the rear seat 4 side of the cabin 3.

The rear air conditioner 5 has a fan 11, an evaporator 12, and a switching door 13 disposed in a unit case 10. In the unit case 10, the air in the cabin 3 is stored in the unit case 10. The air intake duct 15 that guides the vehicle, the air in the unit case 10 that guides the air in the unit case 10 to the cabin 3, and the battery that guides the air in the unit case 10 to the storage space 17 in which the battery 2 is stored. ίϋ® Duct 18 is connected.

The intake duct 15 has one end formed at the rear of the rear seat 4 and opened at the inside of the passenger compartment 3, and the fe み side formed at the unit case 10 and the air of the fan 11 formed at the unit case 10. It communicates with a pel-shaped opening 21 facing the suction part. The casing air duct 16 has one side formed in a compartment side opening 22 formed in a portion of the unit case 10 downstream of the evaporator section 12 in the ventilation direction, and the other end formed in a casing 3. It is provided behind the intake port 20 and communicates with the rear seat side # 1 port 23 which opens into the vehicle interior 3. The battery ventilation duct 18 has an inner space formed at one end thereof at a portion substantially perpendicular to the casing side opening 22 on the downstream side in the ventilation direction from the evaporator 12 of the unit case 10. The opening 25 has a battery-side ventilation opening 26 whose opening ij opens toward the battery 2 in the internal space 17.

The switching door 13 is connected to a driving device such as a motor and the like, and is turned. The turning shaft 30 is fixed to the turning shaft 30 to close the compartment side opening 22 or the storage space side opening 25. Plane And a door portion 31 having the same. The amount of rotation of the rotating shaft 30, that is, the determination of the stop position of the door portion 31 is controlled by a control device (ECU), which will be described later, and the amount of air blown to the compartment air duct 16 and the battery air duct 18. Can be adjusted arbitrarily. The fan 11 is also controlled in its rotational speed by the leakage ECU.

In the storage space 17 on the downstream side in the ventilation direction of the battery 2, there is disposed a pn tl means 35, and further downstream thereof, the air in the storage space 17 is externally provided. An exhaust port 36 for discharging is formed. The ventilation port 26 and the exhaust port 36 on the side of the battery are provided so as to sandwich the battery 2, so that the cool air flows well over the battery 2. Note that, as in the second embodiment shown in FIG. 11, the ventilating port 26 is directed toward the rear of the vehicle body, the exhaust port 36 is formed at the rear end of the vehicle body, and the battery 2 is removed. 26 and 36. Further, as in the third embodiment shown in FIG. 12, it is also possible to allow the cold air to hit the battery 2 from many angles by providing the battery side blowing port 26.

Hereinafter, the description will be continued by returning to the first embodiment. As shown in FIG. 1, the backflow prevention door 4 for preventing the backflow of air from the storage space 17 into the unit case 10 is provided near the battery side ventilation opening 26 in the battery ventilation duct 18. 0 is being emitted. As shown in FIG. 2, the backflow prevention door 40 includes a base 41 fixed to the inner wall of the ventilation duct 18, a rotating shaft 42 rotatably fixed to the base 41, The door 43, which has a flat surface that can be closed on the rotating shaft 42 and can close the ventilation fan duct 18, is fixed on the surface of the inner wall of the ventilation fan duct 18 that is substantially opposite to the base 41. In addition, a spring 44 and a spring-like elastic member 45 that urges the rotating shaft 42 in the direction of arrow A are provided. In the backflow prevention door 40, when the blast B from the rear control 5 flows into the battery dust duct 18, the door portion 43 is displaced from the position C to the position D due to the concealment of the blast B, and the blast: B Is stopped, the door portion 43 returns to the position C by its own weight and the urging force of the spring-shaped elastic member 45. In the vehicle battery cooling device 1 having the above configuration, when the battery cooling is not required, as shown in FIG. ^ All the cool air in the unit case 10 is blown into the passenger compartment 3 from the rear seat side air inlet 23. The battery 2 can be cooled by opening the duct 18 and blowing a part or ^^ of the cool air in the unit case 10 from the battery side ventilation opening 26 into the storage space 17. . Also, when there is no air flow to the battery air duct 18 due to the backflow prevention door 40, as shown in FIG. 2, the door portion 43 is at the position C, and the battery air duct 18 is closed. . In this embodiment, since the backflow prevention door 40 of the knitting 3 does not use a driving device such as a motor, it is advantageous in terms of cost, mounting space, weight, and the like. In addition, a known check valve or the like can be used.

According to Fujinari's vehicular battery cooling device 1, a part or airflow generated by the rear air conditioner 1 can be used for cooling the battery 2, so a new cooling device is installed. Without this, the cooling of the battery 2 can be performed. As a result, in a hybrid vehicle, an electric vehicle, or the like, it is possible to reduce the cost, increase the indoor volume due to the space saving of the installed β, and realize a light weight vehicle body. In addition, when there is no air flow to the battery air duct 18 by the backflow prevention door 40, as shown in FIG. 2, the battery air duct 18 is closed, so that the air in the storage space 17 is released. Since the backflow into the passenger compartment 3 is prevented, safety is ensured.

The control performed in the vehicle battery cooling device 1 will be described below with reference to FIGS. The vehicle battery cooling device 1 includes a CPU, a ROM, a RAM, a 1/0 port, etc., and outputs a control signal to various leaks according to an input signal from various decoration means and a predetermined program recorded in ROM. An electronic control unit (ECU) 50 is provided. The ECU 50 according to the embodiment of the present invention includes the temperature detecting means 35 for detecting the temperature of the battery 2 or the periphery of the battery 2, and a voltage port for detecting the voltage of the battery 2. Means 5 5, Engine operation status to send engine operation status; ^ Mouth means 5 6, Others 3 Switching door 13 based on input signal from spouting means 57, Touch fan 11 1, Freezing A control signal is output to a compressor 58 that forms part of the cycle and pumps refrigerant to the evaporator 12.

As shown in Fig. 4, ECU 50 has various types! By means of battery temperature, room temperature, air conditioner ^ その他, and other information (step 100), based on these information, the switching door 13 movement amount 3, fan 11 rotation Ν, etc. Calculation (step 101), and based on these calculation results, a control signal generated based on the calculation result is output to the drive unit of the switching door 13 and the fan 11 (step 102), whereby the switching door 1 3 and fan 11 are controlled.

FIG. 5 shows one of the flows for determining the rotation speed ファン of the fan 11, and the main control routine (FIG. 5) which controls the higher-order control including the above-described steps 100 to 102. (Not shown). First, in step 200, it is determined based on a feedback signal from the switching door 13 whether or not the switching door 13 is at a position to open the battery air duct 18, and the battery air duct 18 is opened. If it is determined that it is not at the position where it is to be opened, it exits from the mouth and returns to the main control routine, and if it is determined that it is at the position where it will open the no-stellate air duct 18, In, it is determined whether the rotation speed 速度 of the fan 11 is 0 or not.

If it is determined in step 201 that Ν is not equal to 0, the routine returns to the main control routine, and if it is determined that Ν = 0, the process proceeds to step 201. Then, the target rotational speed is set to the predetermined value Ns (Ns> 0), and the process returns to the main control routine.

With this control, the fan 11 is always driven when the battery ventilation duct 18 is open, so that the operation of the switching door 13 and the fan 11 gets older, and the backflow of air from the storage space 17 Can be prevented.

FIG. 6 shows one of the flows for determining the moving amount M of the switching doors 13. Executed periodically from the main control routine. First, in step 300, it is determined whether or not the rotation speed N of the fan 11 is 0. If it is determined that N is not 0, the process returns to the main control routine, and N = In step 310, it is determined whether or not the switching door 13 is at a position where the battery air duct 18 is opened.

When it is determined in step 301 that the switching door 13 is not at the position where the battery air duct 18 is opened, the process returns to the main control routine, and the battery air duct 18 is opened. In the step 302, the amount of movement M required to move the switching door 13 to the position where the battery ventilation duct 18 closes is calculated, and then the main Return to the control routine.

By this control, when the fan 11 is stopped, the switching door 13 always closes the battery air duct 18, so that the operation of the switching door 13 and the fan 11 can be matched, and the storage space can be stored. The backflow of air from 17 can be prevented.

FIG. 7 shows one of the openings for determining the moving amount M of the switching door 13, which is executed from the # 3 main control routine. First, in step 400, it is determined whether or not the rotation speed N of the fan 11 is the maximum value Nmax.If it is determined that N = Nmax is not satisfied, the routine returns to the main control routine. If it is determined that N = Nmax, in Step 401, after calculating the moving amount M of the switching door 13 so that the battery air duct 18 is opened by a predetermined amount, the main control Return to routine.

When the fan 11 is driven at the rotation speed Nmax, the battery 2 generates a large amount of heat, and it is expected that there is sufficient air flow into the cabin 3. By controlling 13 and opening battery air duct 18 at location 4, battery 2 can be protected efficiently.

FIG. 8 shows one of the flows for determining the rotation speed N of the fan 11, which is periodically executed from the main control routine. First, in step 500, It is determined whether or not the rotational speed N is the maximum value Nmax.If it is determined that N = Nmax, the process returns to the main control routine, and it is determined that N = Nmax is not satisfied: In step 501, it is determined whether or not the switching door 13 is at a position where the battery air duct 18 is opened.

At the step 501, it was determined that the switching door 13 was not at the position to open the notch ventilation duct 18: In the case of ^, the process returns to the main control routine, and the switching door 13 is turned on. If it is determined that the duct 18 is in the position to open the duct 18, the target rotation speed Ν is set to the target rotation speed ステップ in step 502, and the rotation of the fan 11 After setting the rotation speed Nopen higher than the speed Nclose, return to the main control routine.

According to this control, when it is necessary to order the battery 2 when the fan 11 is driven at a rotation speed N smaller than the maximum value Nmax, the battery blow duct 18 is closed in a normal state, that is, the battery blow duct 18 is closed. Since the fan 11 is driven at a rotation speed Nopen that is higher than the rotation speed Nclose of the fan 11 at the time, it is possible to prevent an insufficient supply of air into the passenger compartment 3.

FIG. 9 shows a flow relating to the cooling control of the battery 2 immediately after the start of the engine, which is periodically executed from the main control routine. First, at step 600, it is determined whether or not the engine has been started by the basket 3 engine operating status »1 means 56, and if it is determined that the engine has not been started, the main control routine is executed. Returning, if it is determined that the engine has been started, it is determined in step 61 whether or not the elapsed time T from the start of the engine is smaller than a set value Ts. If it is determined in step 600 that T is not Ts, the process returns to the main control routine, and T is determined to be Ts :! In step 600, the switching door 13 is moved to a position where the battery air duct 18 is opened, and the fan 11 is driven at a predetermined rotation speed. Return.

This control suppresses the large heat generation of the battery 2 when starting the engine. Therefore, it is possible to obtain effects such as protection of ^^^^^ and improvement of ^^. FIG. 10 shows a flow relating to the cooling control of the battery 2 after the engine is stopped, which is periodically executed from the main control routine. First, in step 700, it is determined whether or not the engine is stopped by means of {engine operation status} means 56, and when it is determined that the engine is not stopped, the main control routine is executed. Return.

If it is determined in step 700 that the engine has stopped, then in step 700, it is determined whether or not 20EV of battery 2 is greater than the minimum value Vmin set by the mouth means. However, if it is determined that V> Vmin is not satisfied, the control of the switching door 13 and the fan 11 is stopped in step 703, and the process returns to the main control routine. Part 3 In step 700, it was determined that V> Vmin: In step 702, the switching door 13 and the leg of the fan 11 were closed, and the routine returns to step 700.

According to this control, even after the engine is stopped at the end of operation or the like, the cooling control of the battery 2 is performed within a range where a predetermined voltage is maintained, so that the protection of the battery 2 and the improvement of the life are achieved. The effect of can be obtained.

FIG. 13 shows a structure of an intake duct 60 of a rear-con 2 according to the fourth embodiment. The intake duct 60 branches off from a duct 61 communicating with the intake port 20 and is provided outside the vehicle. A duct 62 serving as an opening for guiding the air is provided, and a B / air switching door 63 is provided at a connection portion between the ducts 61 and 62. The intake switching door 63 has a rotating shaft 64 connected to a driving device such as a motor, and a door unit having a plane fixed to the rotating shaft 64 and having a flat surface capable of closing one of the two ducts 61 and 62. The driving device connected to the rotating shaft 64 is controlled by the ECU 50, so that B and the air can be arbitrarily set between the inside of the cabin 3 and the outside air. It is made to be able to take in by the ratio. FIG. 14 is a flowchart relating to the control of the three-view intake switching door 63, which is periodically executed from the main control routine. First, in step 800, the rear air conditioner It is determined whether or not the air conditioner including 2 performs the maximum cooling S rotation.If it is determined that the maximum cooling is not performed, the process returns to the main control routine and performs the maximum cooling operation. If it is determined that the air conditioner is operating, in step 811, the air intake switching door 63 is driven so as to take in outside air as air to the rear air conditioner 2, and then the process returns to the main control routine.

When the air conditioner is operating at the maximum cooling capacity, the room temperature is often high.At this time, the air outside the vehicle is taken into the air blower to greatly enhance the cooling effect of the battery. can do.

In the above-described embodiment, a rear air conditioner is used as the blower described in the claims, but the present invention is not limited to this. That is, as the above-mentioned blowing device, any device that blows air into the vehicle compartment for improving comfort or the like can be applied, and examples thereof include a front air conditioner, an air cleaning device, and a ventilation device. Industrial applicability

As described above, according to the present invention, part or all of the air generated by an air blower such as an air conditioner can be used for cooling the battery, so that a new cooler is not installed, and Terry can be cooled. Further, the provision of the backflow prevention means can prevent the air in the storage space in which the battery is stored from flowing back into the vehicle interior. As a result, in hybrid vehicles, electric vehicles, etc., which use an electric motor driven by a battery as at least a part of the driving source for driving, the battery cooling performance and safety are low, the cost is reduced, and the indoor volume is expanded. In addition, a battery cooling device that is advantageous for weight reduction can be provided.

Claims

The scope of the claims

1. A vehicular battery cooling device used in a vehicle that uses an electric motor driven by a battery as at least one driving source for traveling,

A blower that includes a fan driven by a predetermined drive source to generate wind, a compartment blower duct that guides the wind generated by the blower to the vehicle compartment, and a storage space in which the fE battery is inserted. 3 Battery blast duct that guides the wind generated by the blower into the storage space for the squirrel, and the amount of bottles to the vehicle blast duct and ff battery blast duct changes according to the position driven by the specified drive source. A switching device that controls a knitting fan, a control device that controls a knitting fan and a leakage switching door, and a backflow prevention device that prevents backflow of air from the frt self-storage space to the fris compartment. Cooling system.

2. A vehicle battery cooling device used in a vehicle that uses an electric motor driven by a battery as at least one of the driving power sources for driving, comprising: a fan driven by a predetermined driving source; A blower that generates the air, a compartment air duct that guides the wind generated by the blower to the passenger compartment, an internal space in which the ff self-battery is stored, and a volume that leaks the air generated by the device A blower duct that guides the battery, a switching door that is driven by a predetermined drive source and changes the amount of the knitted car wind duct and the battery blower duct depending on the position, and controls a knitting 3 fan and the switching door. A control device and a backflow prevention leak that prevents backflow of air from the interior space

The battery cooling device for a vehicle, wherein the control device controls the third switching door such that the knitting battery air duct is closed when the fan stops.

3. A vehicle battery cooling device used in a vehicle that uses an electric motor driven by a battery as at least one driving source for traveling,

A blower that includes a fan driven by a predetermined drive source and generates wind, a compartment air duct that guides the wind generated by the blower to a vehicle compartment, and the battery is housed therein. A storage space, a battery duct that guides the wind generated by the ifSi wind device to the storage space, and a three-chamber air duct and an if-not-a-battery air duct that are driven by a predetermined drive source and move according to their position. A switching door for changing the amount of air blown to the vehicle, a control device for controlling the fan and the switching door, a backflow prevention device for preventing a backflow of air from the storage space to the vehicle compartment, and an operation state of the engine. And a controller for controlling the operation of the three-battery air duct during a period of time from when the engine start is spouted by the engine operation decorating means until a predetermined time elapses. A battery cooling device for vehicles that controls the t-door to open and waits for the drive of the Nobel fan.

4. A vehicular battery cooling device used in a vehicle that uses an electric motor driven by a battery as at least one of a driving source for traveling,

A blower that has a fan driven by a predetermined drive source to generate wind, a vehicle wind duct that guides the wind generated by the wind device to the vehicle cabin, and a storage space in which the battery is stored , RlS ® device, and a battery ventilation duct that guides the wind generated by the rlS® device to the storage space, and is driven by a predetermined drive source to vary the ventilation volume to the room 3 ventilation duct and the battery duct according to its position. Switching door, ΙίΙΒFan and 編 3 Control device for controlling the switching door, 編 3 Backflow prevention device for preventing backflow of air from the storage space to the knitting room, and engine for detecting the operating state of the engine Operating means, and spouting means for venting the voltage of the lulH battery,

After the engine is turned off by the engine operating state means, the control device may control the switching door and the fan of the # 3 fan within a range in which the voltage applied by the means does not fall below a predetermined value. A vehicle cooling device characterized by performing control.

5. Volume 3 A temperature control means for opening a battery or i J around the battery is provided, and the control device is configured to control the fan and the switching door based on a signal indicated by the pen means. Claims 1 to control at least one of them. 5. The battery cooling device for a vehicle according to any one of 4.

6. The vehicle battery cooling device according to any one of claims 1 to 5, wherein the 1513 blower is an air conditioner including at least an evaporator.

7. The vehicular bus according to any one of claims 1 to 6, wherein the air conditioner is arranged on a rear side of the vehicle body to cool a rear seat side of a vehicle interior.ヅ Teri cooling device.

8. A mouth means, and a compressor for pumping a refrigerant to the evaporator.

The vehicle battery cooling device according to claim 6 or 7, wherein the control device controls the compressor (3) based on a signal which is not heard by the heating device.

9. The vehicle notch cooling device according to any one of claims 1 to 4, wherein the ft3 blowing device is an air purifying device.

10. The vehicle battery cooling device according to any one of claims 1 to 4, wherein the touch 3 blower is a ventilation device.

1 1. Carrying 3 Backflow prevention β is displaced from the SJ when the ventilation from the equipment to the battery ventilation duct to open the battery ventilation duct, and when the battery ventilation ventilation duct is not ventilated. The battery according to any one of claims 1 to 5, wherein the battery is configured to include a door that is displaced by its own weight or an elastic member, or cooperates with each other to close the battery ventilation duct. Battery cooling device for vehicles.

1 2. The control device according to any one of claims 1 to 11, wherein the control device always rotates the fan when the control device is at a position where the switching door and the battery ventilation duct are opened. Vehicle battery cooling system.

1 3. The touch control device controls the iffi switching door so that the three-battery air duct is opened when the rotation of the three fans is at the maximum value. 3. The battery cooling device for a vehicle according to any one of 2.

1 4. The Shuku3 control device is designed to make sure that the fan 3 Claim 1 to Claim 13, wherein the fan is controlled so that the rotation speed is higher than the rotation speed when the battery ventilation duct is closed when the ventilation duct is open. The battery cooling device for a vehicle according to any one of the first to third aspects.

15. The vehicle battery cooling device according to claim 1, wherein the leakage battery air duct is disposed in a location other than the vehicle luggage compartment. 16.

1 6. An outlet for blowing air from the battery air duct into the distribution space and an air outlet for guiding air in the knitting space to the outside are formed at positions substantially facing the battery. The vehicle battery cooling device according to any one of claims 1 to 15, wherein:

1 7. The battery cooling device for a vehicle according to 1-16, which has a plurality of 1513 outlets.

18. The rlS blower is characterized in that the rlS blower is provided with intake switching means for selectively taking air into a unit thereof from at least two of the vehicle compartment, the a-room, and the outside of the vehicle. The vehicle cooling device according to any one of the above.

1 9.ff When the self-blowing device is an air conditioner, the air conditioner is operating at the maximum cooling capacity, and it is determined from the information obtained by the specified means that cooling of 3 batteries is necessary. In

19. The vehicle battery cooling device according to claim 18, wherein said intake means takes in air outside the vehicle.