JP2008055990A - Vehicular battery cooling system - Google Patents

Vehicular battery cooling system Download PDF

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Publication number
JP2008055990A
JP2008055990A JP2006233227A JP2006233227A JP2008055990A JP 2008055990 A JP2008055990 A JP 2008055990A JP 2006233227 A JP2006233227 A JP 2006233227A JP 2006233227 A JP2006233227 A JP 2006233227A JP 2008055990 A JP2008055990 A JP 2008055990A
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Prior art keywords
battery
air
cooling
vehicle
vehicle interior
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Inventor
Toshiharu Watanabe
年春 渡辺
Kazunori Ikui
一憲 生井
Toshiyuki Motohashi
季之 本橋
Yoshikazu Takamatsu
由和 高松
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Marelli Corp
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Calsonic Kansei Corp
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Priority to JP2006233227A priority Critical patent/JP2008055990A/en
Priority to PCT/JP2007/063779 priority patent/WO2008026386A1/en
Publication of JP2008055990A publication Critical patent/JP2008055990A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/142—Emission reduction of noise acoustic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular battery cooling system capable of making cooling efficiency sufficient while suppressing noise. <P>SOLUTION: The vehicular battery cooling system is provided with a battery 2 installed on the vehicle and used for traveling; a blower fan 4 provided separately from an in-cabin air-conditioner and generating blown air to the battery 2; and a heat exchanger (evaporator 3) provided separately from the in-cabin air conditioner and cooling the blown air by heat exchange of a coolant flowing at the inside and the blown air fed to the battery 2. The evaporator 3, i.e., the heat exchanger also uses the coolant with in-cabin air-conditioning. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両に設置される走行用バッテリを冷却する車両用バッテリ冷却システムの技術分野に属する。   The present invention belongs to the technical field of a vehicle battery cooling system for cooling a traveling battery installed in a vehicle.

従来では、冷却装置は、エアコンによって空調されている車室内の空気を冷却ファンによって吸引してバッテリを冷却する。この冷却装置では、切換えダンパによって冷却風を車室内へ戻す循環モードと、冷却風を車外へ排出する排気モード及び冷却風の一部を車室内へ戻すと共に残りを車外へ排出する循環／排気モードが選択可能となっており、エアコンの運転状態、車室内の空調状態及び電池温度等に基づいて冷却ファンの風量と切換えダンパを制御し、車室内の圧力低下や空調負荷の増加を抑えながらバッテリを冷却している（例えば、特許文献１参照。）。
特許３２４０９７３号公報（第１−１３頁、全図） Conventionally, a cooling device cools a battery by sucking air in a vehicle compartment that is air-conditioned by an air conditioner with a cooling fan. In this cooling device, a circulation mode in which the cooling air is returned to the vehicle interior by the switching damper, an exhaust mode in which the cooling air is discharged to the outside of the vehicle, and a circulation / exhaust mode in which a part of the cooling air is returned to the vehicle interior and the rest is discharged to the outside of the vehicle. Can be selected, and the air flow of the cooling fan and the switching damper are controlled based on the operating condition of the air conditioner, the air condition of the passenger compartment, the battery temperature, etc., and the battery while suppressing the pressure drop in the passenger compartment and the increase of the air conditioning load. (For example, refer to Patent Document 1).
Japanese Patent No. 3240973 (page 1-13, all figures)

しかしながら、従来にあっては、最大性能時は、風量を最大にする制御であったため、風量の増加に伴い、冷却ファンの騒音が増加し問題となるものであった。   However, in the past, at the maximum performance, the control was performed to maximize the air volume, and as a result, the noise of the cooling fan increased with the increase in the air volume.

本発明は、上記問題点に着目してなされたもので、その目的とするところは、騒音を抑制しつつ、冷却効率を良好にすることができる車両用バッテリ冷却システムを提供することにある。   The present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a vehicle battery cooling system capable of improving cooling efficiency while suppressing noise.

上記目的を達成するため、本発明では、車両に設置され走行に用いられるバッテリと、車室内空調用と別に設けられ、前記バッテリへの送風を発生させる送風機と、車室内空調用と別に設けられ、内部を流れる冷媒と前記バッテリへ送る送風との熱交換により送風を冷却する熱交換器と、を備えることを特徴とする。   In order to achieve the above object, in the present invention, a battery installed in a vehicle and used for traveling and a vehicle interior air conditioner are provided separately, and a blower that generates air to the battery and a vehicle interior air conditioner are provided separately. And a heat exchanger that cools the air by heat exchange between the refrigerant flowing inside and the air sent to the battery.

よって、本発明にあっては、騒音を抑制しつつ、冷却効率を良好に、バッテリを冷却することができる。   Therefore, in the present invention, the battery can be cooled with good cooling efficiency while suppressing noise.

以下、本発明の車両用バッテリ冷却システムを実現する実施の形態を、請求項１，２に係る発明に対応する実施例１と、請求項１，２，４に係る発明に対応する実施例２と、請求項１，２，５に係る発明に対応する実施例３，４と、請求項１，２，４，５に係る発明に対応する実施例５と、請求項１，３に係る発明に対応する実施例６と、請求項１，３，４に係る発明に対応する実施例７と、請求項１，３，５に係る発明に対応する実施例８と、請求項１，３，４，５に係る発明に対応する実施例９に基づいて説明する。   Embodiments for realizing a vehicle battery cooling system according to the present invention will be described below as a first embodiment corresponding to the first and second aspects of the invention and a second embodiment corresponding to the first and second aspects of the invention. Embodiments 3 and 4 corresponding to the inventions according to claims 1, 2 and 5, Embodiment 5 corresponding to the inventions according to claims 1, 2, 4 and 5, and Inventions according to claims 1 and 3 Example 6, corresponding to the invention according to claims 1, 3 and 4, Example 8 corresponding to the invention according to claims 1, 3 and 5, and Claims 1, 3, A description will be given based on the ninth embodiment corresponding to the inventions according to the fourth and fifth aspects.

まず、構成を説明する。
図１は実施例１の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。図２は実施例１の車両用バッテリ冷却システムにおけるバッテリ設置位置の説明図である。
実施例１における車両用バッテリ冷却システムは、バッテリケース１、バッテリ２、エバポレータ３、ブロワファン４、吸気ダクト５、排気ダクト６を主要な構成としている。
バッテリケース１は、図２に示すように、車両トランクやフロア下において、車体パネル７の上方にバッテリ２を固定するための構造部材であり、且つ周囲に対してバッテリ２を保護する保護部材でもある。バッテリケース１は、バッテリ２の全面を覆うものでなくともよいが、直接あるいは間接的にバッテリ２を支持するものである。 First, the configuration will be described.
FIG. 1 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system according to the first embodiment. FIG. 2 is an explanatory diagram of a battery installation position in the vehicle battery cooling system according to the first embodiment.
The vehicle battery cooling system according to the first embodiment includes a battery case 1, a battery 2, an evaporator 3, a blower fan 4, an intake duct 5, and an exhaust duct 6 as main components.
As shown in FIG. 2, the battery case 1 is a structural member for fixing the battery 2 above the vehicle body panel 7 below the vehicle trunk or floor, and is also a protective member for protecting the battery 2 against the surroundings. is there. The battery case 1 does not have to cover the entire surface of the battery 2 but supports the battery 2 directly or indirectly.

バッテリ２は、リチウムイオンを極間で交換して、充電、放電を行うリチウムイオンバッテリである。リチウムイオンバッテリには、いわゆるメモリー効果が生じないという有利な特徴がある。
車両の走行用に用いるバッテリ２は、リチウムイオンバッテリの複数を直列接続するよう組合せた組電池にしたものである。
この走行用に組電池にしたものの詳細例として、特開２００５−１１６４２７を挙げておく。組電池の構造は、この詳細例に限らないものとするが、板状のリチウムイオンバッテリを組み合わせた最小単位のものをさらに複数組合せて用いる。その総数は数十個以上に達する。 The battery 2 is a lithium ion battery that performs charging and discharging by exchanging lithium ions between electrodes. Lithium-ion batteries have the advantageous feature that no so-called memory effect occurs.
The battery 2 used for running the vehicle is an assembled battery in which a plurality of lithium ion batteries are combined in series.
Japanese Patent Application Laid-Open No. 2005-116427 is given as a detailed example of the battery pack for traveling. The structure of the assembled battery is not limited to this detailed example, but a plurality of the minimum units that combine plate-like lithium ion batteries are used. The total number reaches several dozen.

エバポレータ３は、図１に示すように、車室内からバッテリケース１へ空気を送る吸気ダクト５の途中に設けられ、エアコンシステムで供給・回収される冷媒と周囲空気との熱交換を行うものである。
ブロワファン４は、車室内からバッテリケース１へ空気を送る吸気ダクト５の途中で、且つエバポレータ３の上流に設けられ、エバポレータ３に送風を行い、エバポレータ３で熱交換した冷却空気をバッテリ２へ送るようにするものである。
つまり、車室内空調用とは別に、バッテリ冷却用に吸気ダクト５の途中にエバポレータ３、ブロワファン４を設ける。 As shown in FIG. 1, the evaporator 3 is provided in the middle of an intake duct 5 that sends air from the passenger compartment to the battery case 1, and performs heat exchange between refrigerant supplied and recovered by the air conditioner system and ambient air. is there.
The blower fan 4 is provided in the middle of the intake duct 5 for sending air from the passenger compartment to the battery case 1 and upstream of the evaporator 3. The blower fan 4 blows air to the evaporator 3 and exchanges cooling air heat-exchanged by the evaporator 3 to the battery 2. It is intended to send.
That is, separately from the vehicle interior air conditioning, the evaporator 3 and the blower fan 4 are provided in the middle of the intake duct 5 for battery cooling.

なお、実施例１の車両用バッテリ冷却システムにおいては、図示しないコントローラによって、バッテリの充放電や温度管理などが成されるものとする。
エバポレータ３の冷媒制御は、エアコンシステムのコントローラで制御することが望ましい。
ブロワファン４の制御は、バッテリの充放電等を行うコントローラにより制御しても、エアコンシステムのコントローラで制御してもよい。 In the vehicle battery cooling system according to the first embodiment, charging / discharging of the battery, temperature management, and the like are performed by a controller (not shown).
The refrigerant control of the evaporator 3 is desirably controlled by a controller of the air conditioner system.
The blower fan 4 may be controlled by a controller for charging / discharging the battery or the controller of the air conditioner system.

吸気ダクト５は、車室内後部に先端部を接続して空気を吸い込むように空気流路を形成し、後端部をバッテリケース１の車両前方側に接続して、車室内空気をバッテリケース１へ送るようにする。なお、エバポレータ３、ブロワファン４の周囲もしくは近傍に吸気を溜める部分を設けるようにしてもよい。
排気ダクト６は、吸気ダクト５を接続したバッテリケース１の車両前方側と反対側となる車両後方側に先端部を接続し、後端側を車両下部等に配置して、車室外部へ開放する。これによりバッテリケース１の内部から外部への空気排出路を形成する。 The air intake duct 5 has a front end connected to the rear part of the vehicle interior to form an air flow path so as to suck in air, and a rear end connected to the vehicle front side of the battery case 1 so that the air in the vehicle interior is connected to the battery case 1. To send to. Note that a portion for collecting intake air may be provided around or in the vicinity of the evaporator 3 and the blower fan 4.
The exhaust duct 6 has a front end connected to the vehicle rear side opposite to the vehicle front side of the battery case 1 to which the intake duct 5 is connected, and a rear end arranged at the lower part of the vehicle and opened to the outside of the vehicle compartment. To do. Thus, an air discharge path from the inside of the battery case 1 to the outside is formed.

図３は実施例１の車両用バッテリ冷却システムと協調するエアコンシステムの説明図である。
ここで、実施例１と協調して冷媒制御を行うエアコンシステムについて、図３を参照して説明する。
実施例１と協調制御を行うエアコンシステムは、電動コンプレッサ１０２によって圧縮した高圧冷媒をコンデンサ１０１に送って放熱冷却させ冷媒を液化し、その後リキッドタンク１０３で水分やゴミを除去して液化した冷媒を電磁弁８へ送り、空調用エバポレータ１０６へ向かう冷媒ライン２０１とバッテリ冷却用のエバポレータ３へ向かう冷媒ライン２０３への振り分け冷媒流量を制御する。そして、図示しない弁により冷媒を低圧に膨張させ、空調用エバポレータ１０６で冷媒を蒸発させてファン１０４が車室内に送る空気を冷却し、蒸発した低圧冷媒を冷媒ライン２０２、２０４により回収して電動コンプレッサ１０２に送るようにして循環させるものである。 FIG. 3 is an explanatory diagram of an air conditioner system that cooperates with the vehicle battery cooling system of the first embodiment.
Here, an air conditioner system that performs refrigerant control in cooperation with the first embodiment will be described with reference to FIG.
The air conditioner system that performs coordinated control with the first embodiment sends the high-pressure refrigerant compressed by the electric compressor 102 to the condenser 101 to radiate and cool it to liquefy the refrigerant, and then remove moisture and dust in the liquid tank 103 to convert the liquefied refrigerant to The refrigerant flow to the electromagnetic valve 8 and the distribution refrigerant flow to the refrigerant line 201 toward the air conditioning evaporator 106 and the refrigerant line 203 toward the battery cooling evaporator 3 are controlled. Then, the refrigerant is expanded to a low pressure by a valve (not shown), the refrigerant is evaporated by the air-conditioning evaporator 106, the air sent from the fan 104 to the passenger compartment is cooled, and the evaporated low-pressure refrigerant is collected by the refrigerant lines 202 and 204 to be electrically operated. It is circulated by being sent to the compressor 102.

電動コンプレッサ１０２や電磁弁８は、エアコンシステムにおけるコントローラ１０５により制御される。センサ類等の説明は省略する。このエアコンシステムのコントローラ１０５は、車内通信等により、図示しないバッテリ２のコントローラと通信を行い、必要な情報、指令を通信して、電磁弁８による冷媒流量の制御等を行うものとする。
なお、冷媒を低圧に膨張させる弁は、冷媒ライン２０３にも図示しないが設けられる。また電磁弁８と一体に設けてもよい。 The electric compressor 102 and the electromagnetic valve 8 are controlled by a controller 105 in the air conditioner system. Description of sensors etc. is omitted. The controller 105 of the air conditioner system communicates with a controller of the battery 2 (not shown) by in-vehicle communication or the like, communicates necessary information and commands, and controls the refrigerant flow rate by the electromagnetic valve 8.
A valve for expanding the refrigerant to a low pressure is also provided in the refrigerant line 203 (not shown). Further, it may be provided integrally with the electromagnetic valve 8.

作用を説明する。
[走行用バッテリの冷却作用]
実施例１の車両用バッテリ冷却システムは、ハイブリッド車両や電気自動車に用いるものである。
この走行用に使用されるバッテリ２は、走行時の充放電によって発熱し、この充放電を繰り返すことにより高温に至る。
例えば、リチウムイオンバッテリでは、高温になると劣化や極間を形成する部材の剥離、不純物の析出などを生じ、結果的にバッテリ容量が減り、寿命を迎える。また、最悪の場合、破損することになる。 The operation will be described.
[Driving battery cooling]
The vehicle battery cooling system according to the first embodiment is used for a hybrid vehicle or an electric vehicle.
The battery 2 used for traveling generates heat due to charging / discharging during traveling, and reaches a high temperature by repeating this charging / discharging.
For example, in a lithium ion battery, when the temperature is high, deterioration, peeling of members forming the gaps, precipitation of impurities, and the like occur, resulting in a decrease in battery capacity and a lifetime. In the worst case, it will be damaged.

そのため、リチウムイオンバッテリでは、略５０度以下程度に冷却して保つことが良好なバッテリ性能の発揮のために必要となる。
他のバッテリにおいても、概ね同様の理由により冷却の必要がある。
車両が走行することにより生じる走行風や送風装置による空冷装置を考えることができるが、車両への走行性能の要求が高くなるにつれ、バッテリの軽量化や大容量化が求められるようになり、より積極的な冷却手段が必要になっている。 For this reason, in a lithium ion battery, it is necessary to cool it to about 50 degrees or less in order to exhibit good battery performance.
Other batteries need to be cooled for the same reason.
You can think of the air cooling device by the driving wind and blower generated by the vehicle running, but as the demand for driving performance to the vehicle becomes higher, the lighter and larger capacity of the battery will be required, and more Aggressive cooling is needed.

実施例１の車両用バッテリ冷却システムは、このような問題を解決して積極的な冷却によりバッテリを良好な性能が発揮できる温度に保ち、その上で、騒音を抑制しつつ、冷却効率良好にバッテリを冷却する。   The vehicle battery cooling system according to the first embodiment solves such a problem and keeps the battery at a temperature at which good performance can be exerted by aggressive cooling, and further improves the cooling efficiency while suppressing noise. Cool the battery.

(a)積極的な冷却作用
実施例１の車両用バッテリ冷却システムでは、ブロワファン４にて車室内空気を吸い込み、吸い込んだ空気をエバポレータ３で冷却し、冷却風をバッテリ２に送って冷却を行う。そして、バッテリ２を冷却し、温められた空気を排気ダクト６により車室外で且つバッテリケース１の外部へ排気する。
ここで、冷却風量をＧａ、バッテリケース１の吸い込み空気温度をＴ１、バッテリケース１からの排出空気温度をＴ２、バッテリ温度をＴｂとする。
すると、冷却性能は、Ｇａと（Ｔ２−Ｔ１）の積に比例することになる。 (a) Positive cooling action In the vehicle battery cooling system of the first embodiment, the blower fan 4 sucks in the passenger compartment air, cools the sucked air with the evaporator 3, and sends the cooling air to the battery 2 for cooling. Do. Then, the battery 2 is cooled, and the heated air is exhausted outside the vehicle compartment and outside the battery case 1 by the exhaust duct 6.
Here, the cooling air volume is Ga, the intake air temperature of the battery case 1 is T1, the exhaust air temperature from the battery case 1 is T2, and the battery temperature is Tb.
Then, the cooling performance is proportional to the product of Ga and (T2-T1).

この関係において、冷却性能をアップさせるためにＧａをアップさせると、騒音の悪化を招くことになる。実施例１では、（Ｔ２−Ｔ１）をアップさせることによって冷却性能を向上させる。このとき、ＴｂとＴ１の温度差が大きいほど、（Ｔ２−Ｔ１）は大きくなるため、Ｔ１を低温化させることで、冷却性能を向上させつつ、低騒音化を行う。   In this relationship, if Ga is increased in order to improve the cooling performance, noise will be deteriorated. In Example 1, the cooling performance is improved by increasing (T2-T1). At this time, as the temperature difference between Tb and T1 increases, (T2−T1) increases. Therefore, by lowering T1, the noise is reduced while improving the cooling performance.

エバポレータ３は、バッテリケース１の近傍に配置され、バッテリ冷却専用に設けた吸気ダクト５内で送風の冷却を行うため、冷却効率が非常に高くなる。
この冷却効率が高く得られることから、実施例１では、エバポレータ３、ブロワファン４を小型化している。 Since the evaporator 3 is disposed in the vicinity of the battery case 1 and cools the air in the intake duct 5 provided exclusively for battery cooling, the cooling efficiency is very high.
Since this cooling efficiency is high, in the first embodiment, the evaporator 3 and the blower fan 4 are downsized.

また、バッテリケース１の前方側から内部へ吸気ダクト５により冷却風を送り、バッテリケース１の後方側から外部へ排気ダクト６により排気を行うため、一様で効果の高い冷却風の流れでバッテリ２の冷却が行える。   Further, since cooling air is sent from the front side of the battery case 1 to the inside by the intake duct 5 and exhausted from the rear side of the battery case 1 to the outside by the exhaust duct 6, the battery is supplied with a uniform and highly effective flow of cooling air. 2 can be cooled.

よって、走行時の充放電によって発熱したバッテリ２は、エアコンシステムからの冷媒によって熱交換するエバポレータ３とブロワファン４から送られる冷却風により効率よく冷却される。
この積極的な冷却によって、バッテリ２を適度な温度に保つことができ、バッテリ２の性能を良好に発揮させることができる。
また、バッテリ２の温度が精度よく制御されることによって、結果的にバッテリ２の寿命、つまり容量低減抑制の向上を行うことができる。 Therefore, the battery 2 that has generated heat due to charging and discharging during traveling is efficiently cooled by the cooling air sent from the evaporator 3 and the blower fan 4 that exchange heat with the refrigerant from the air conditioner system.
By this active cooling, the battery 2 can be kept at an appropriate temperature, and the performance of the battery 2 can be exhibited well.
Moreover, by controlling the temperature of the battery 2 with high accuracy, it is possible to improve the life of the battery 2, that is, the capacity reduction suppression as a result.

(b)騒音を抑制する作用
実施例１の車両用バッテリ冷却システムでは、エバポレータ３による積極的な冷却が行われるため、ブロワファン４を小型化することができる。それとともに、従来のようなファンのみによる冷却に比較して、ブロワファン４の回転数の低減、あるいは、ブロワファン４の最大回転数の低減、または最大回転数による運転時間の低減を図るよう制御し、騒音を抑制する。 (b) Action for suppressing noise In the vehicle battery cooling system according to the first embodiment, since the evaporator 3 is actively cooled, the blower fan 4 can be reduced in size. At the same time, control is performed so as to reduce the rotational speed of the blower fan 4 or reduce the maximum rotational speed of the blower fan 4 or the operating time by the maximum rotational speed as compared with the conventional cooling only by the fan. And suppress noise.

(c)車両搭載性の向上作用
実施例１の車両用バッテリ冷却システムでは、上記説明のように、冷却風量を低くできるため、上記説明のように、ブロワファン４を小型化できるとともに、これに伴い、吸気ダクト５、排気ダクト６のダクト断面積を小さくできる。これにより、全体的に省スペースなものとなり、車両搭載性が向上する。
これは、従来の送風のみで冷却するものに比べて、非常に省スペースなものとなる。 (c) Effect of improving vehicle mountability In the vehicle battery cooling system according to the first embodiment, the amount of cooling air can be reduced as described above, so that the blower fan 4 can be reduced in size as described above. Accordingly, the duct cross-sectional areas of the intake duct 5 and the exhaust duct 6 can be reduced. Thereby, it becomes a space-saving thing as a whole, and vehicle mounting property improves.
This is very space-saving compared with the conventional cooling by air only.

(d)車両の燃費への影響を抑制する作用
実施例１の車両用バッテリ冷却システムへ冷媒を供給・回収するエアコンシステムは、ハイブリッド車両において、電動コンプレッサ１０２により構成されるようにし、エンジンの駆動負荷にならないため、低燃費化の促進を図ることができ、車両の燃費への影響を抑制する。 (d) Action for suppressing the influence on the fuel consumption of the vehicle The air conditioner system for supplying and recovering the refrigerant to the vehicle battery cooling system of the first embodiment is configured by the electric compressor 102 in the hybrid vehicle to drive the engine. Since it does not become a load, it is possible to promote a reduction in fuel consumption and to suppress the influence on the fuel consumption of the vehicle.

次に、効果を説明する。
実施例１の車両用バッテリ冷却システムにあっては、下記に列挙する効果を得ることができる。 Next, the effect will be described.
In the vehicle battery cooling system of the first embodiment, the effects listed below can be obtained.

(1)車両に設置され走行に用いられるバッテリ２と、車室内空調用と別に設けられ、バッテリ２への送風を発生させるブロワファン４と、車室内空調用と別に設けられ、内部を流れる冷媒とバッテリ２へ送る送風との熱交換により送風を冷却する熱交換器(エバポレータ３)とを備えるため、騒音を抑制しつつ、冷却効率を良好に、バッテリを冷却することができる。   (1) A battery 2 installed in the vehicle and used for running, and a blower fan 4 for generating air flow to the battery 2 and a refrigerant that is provided separately for the vehicle interior air conditioning and flows inside Since the heat exchanger (evaporator 3) that cools the air by heat exchange with the air sent to the battery 2 is provided, the battery can be cooled with good cooling efficiency while suppressing noise.

(2)熱交換器は、エバポレータ３であり、車室内空調と冷媒を共用するものであるため、エバポレータ３により容易に送風の低温化を行うことができ、冷媒が車室内空調と共用化されることにより、コンプレッサやコンデンサ等を２重に設けることなく、コストを抑制でき、車両用バッテリ冷却システムの省スペース、軽量化を行うことができる。   (2) Since the heat exchanger is the evaporator 3 and shares the refrigerant with the vehicle interior air conditioning, the evaporator 3 can easily reduce the temperature of the air blow, and the refrigerant is shared with the vehicle interior air conditioning. Thus, the cost can be suppressed without providing a compressor, a condenser, etc., and the space and weight of the vehicle battery cooling system can be reduced.

実施例２の車両用バッテリ冷却システムは、バッテリ冷却用に設けたエバポレータ及びブロワファンによる冷却風を車室内へ送るよう切り替え自在にした例である。
構成を説明する。
図４は実施例２の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。
実施例２では、エバポレータ３からバッテリケース１までの吸気ダクト５の途中から、車室内へ接続する吸気ダクト５の車室内送気部分５１を設ける。
そして、さらに吸気ダクト５の車室内送気部分５１への分岐部に、切替ドア５２を設けて、エバポレータ３等を設置した上流からの空気を車室内送気部分５１へ流すか、バッテリケース１側に流すかを切り替えるようにする。
その他構成は、実施例１と同様であるので、説明を省略する。 The vehicle battery cooling system according to the second embodiment is an example in which switching is possible so that cooling air from an evaporator and a blower fan provided for battery cooling is sent into the passenger compartment.
The configuration will be described.
FIG. 4 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the second embodiment.
In the second embodiment, a vehicle interior air supply portion 51 of the intake duct 5 connected to the vehicle interior is provided from the middle of the intake duct 5 from the evaporator 3 to the battery case 1.
Further, a switching door 52 is provided at a branching portion of the intake duct 5 to the vehicle interior air supply portion 51 so that air from the upstream where the evaporator 3 or the like is installed flows to the vehicle interior air supply portion 51 or the battery case 1. Switch between flowing to the side.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

作用を説明する。
[車室内空調の冷却性能の向上作用]
実施例２では、バッテリ冷却用に設けたエバポレータ３、ブロワファン４からの冷却風を切替ドア５２の切り替えにより、車室内へ送ることを可能にしている。
例えば、実施例２の車両用バッテリ冷却システムをハイブリッド車に用いた場合、車両が加減速する際にバッテリ２に充放電の負荷がかかり、バッテリ２は発熱する。しかしながら、定速走行時や渋滞時には、バッテリ２は発熱しない状態となる。 The operation will be described.
[Improvement of cooling performance of vehicle interior air conditioning]
In the second embodiment, the cooling air from the evaporator 3 and the blower fan 4 provided for battery cooling can be sent to the vehicle interior by switching the switching door 52.
For example, when the vehicle battery cooling system according to the second embodiment is used in a hybrid vehicle, the battery 2 is charged and discharged when the vehicle is accelerated or decelerated, and the battery 2 generates heat. However, when traveling at a constant speed or in a traffic jam, the battery 2 does not generate heat.

このような場合に、バッテリ冷却用に設けたエバポレータ３、ブロワファン４からの冷却風を切替ドア５２の切り替えにより、車室内へ送り、後部座席側の後方用クーラーとして用いる、エアコンの効果が遅れる後方へのスポットクーラーとして用いる、日射によって高温化する天板により車室内が温められるのに対する冷却を行う天板温熱改善に用いるなどを行う。これにより、車室内の空調効率をさらに向上させることになり、より快適な車室内空間にすることができる。   In such a case, the cooling air from the evaporator 3 and the blower fan 4 provided for cooling the battery is sent to the vehicle interior by switching the switching door 52, and the effect of the air conditioner used as a rear cooler on the rear seat side is delayed. It is used as a spot cooler for the rear, and it is used to improve the temperature of the top plate, which cools the vehicle compartment while it is warmed by the top plate heated by solar radiation. Thereby, the air-conditioning efficiency in the vehicle interior is further improved, and a more comfortable vehicle interior space can be provided.

また、切替ドア５２の切り替えは、例えばバッテリ２へ８０％、車室内へ２０％のように、比率配分してもよい。このようにすれば、車室内空調の効率化への寄与と、バッテリ冷却を状況に応じて変化させて、確実に両立させる。   Further, the switching of the switching doors 52 may be distributed in a ratio such as 80% for the battery 2 and 20% for the vehicle interior. If it does in this way, contribution to the efficiency improvement of vehicle interior air conditioning and battery cooling will be changed according to a situation, and it will make it compatible.

効果を説明する。
実施例２の車両用バッテリ冷却システムでは、上記(1),(2)の効果に加えて、以下の効果を有する。
(4)ブロワファン４及びエバポレータ３からの冷却風を、バッテリ２へ向かう吸気ダクト５の部分と、車室内へ向かう車室内送気部分５１とに比率自在に配風する切替ドア５２を備えたため、車室内空調の効率化に寄与することができ、また、車室内空調の効率化への寄与と、バッテリ冷却を確実に両立させることができる。
その他作用効果は実施例１と同様であるので説明を省略する。 Explain the effect.
The vehicle battery cooling system according to the second embodiment has the following effects in addition to the effects (1) and (2).
(4) Since the switching door 52 that distributes the cooling air from the blower fan 4 and the evaporator 3 in proportion to the portion of the intake duct 5 that goes to the battery 2 and the air supply portion 51 that goes to the vehicle interior is provided. Therefore, it is possible to contribute to the efficiency improvement of the air conditioning in the vehicle interior, and it is possible to ensure both the contribution to the efficiency improvement of the air conditioning in the vehicle interior and the battery cooling.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

実施例３の車両用バッテリ冷却システムは、バッテリ冷却用に設けたエバポレータ及びブロワファンによるバッテリ冷却後の冷却風を車室内へ送るよう切り替え自在にした例である。
構成を説明する。
図５は実施例３の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。
実施例３では、バッテリケース１から車室外への排気ダクト６の途中から、車室内へ空気を導入するよう接続する排気ダクト６の車室内送気部分６１を設ける。
そして、さらに排気ダクト６の車室内送気部分６１への分岐部に、切替ドア６２を設けて、バッテリケース１内で、バッテリ２を冷却した空気を、車室外へ排気するか、車室内へ流すかを切り替えるようにする。
その他構成は、実施例１と同様であるので、説明を省略する。 The vehicle battery cooling system of the third embodiment is an example in which switching is possible so that cooling air after battery cooling by an evaporator and a blower fan provided for battery cooling is sent to the vehicle interior.
The configuration will be described.
FIG. 5 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the third embodiment.
In the third embodiment, a vehicle interior air supply portion 61 of the exhaust duct 6 connected to introduce air into the vehicle interior from the middle of the exhaust duct 6 from the battery case 1 to the outside of the vehicle interior is provided.
Further, a switching door 62 is provided at a branching portion of the exhaust duct 6 to the air supply portion 61 in the vehicle interior, and the air that has cooled the battery 2 in the battery case 1 is exhausted outside the vehicle interior or into the vehicle interior. Switch between flowing.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

作用を説明する。
[車室内空調へ寄与させる制御処理]
図６に示すのは、実施例３の車両用バッテリ冷却システムで実行される切替ドア６２の制御処理の流れを示すフローチャートで、以下各ステップについて説明する。 The operation will be described.
[Control processing that contributes to vehicle interior air conditioning]
FIG. 6 is a flowchart showing a flow of control processing of the switching door 62 executed in the vehicle battery cooling system of the third embodiment. Each step will be described below.

ステップＳ１１では、バッテリ温度の測定を行う。   In step S11, the battery temperature is measured.

ステップＳ１２では、バッテリ温度が所定温度以下かどうかを判断し、所定温度以下ならばステップＳ１８へ進み、所定温度を超えているならばステップＳ１３へ進む。   In step S12, it is determined whether or not the battery temperature is equal to or lower than a predetermined temperature. If it is equal to or lower than the predetermined temperature, the process proceeds to step S18, and if it exceeds the predetermined temperature, the process proceeds to step S13.

ステップＳ１３では、冷却風のバッテリケース１の出口での温度は、車室内温度以下かどうかを判断し、車室内温度以下ならばステップＳ１４へ進み、車室内温度を超えているならばステップＳ１９へ進む。   In step S13, it is determined whether or not the temperature of the cooling air at the outlet of the battery case 1 is equal to or lower than the vehicle interior temperature. If the temperature is lower than the vehicle interior temperature, the process proceeds to step S14. move on.

ステップＳ１４では、車室内用エアコンシステムが運転中かどうかを判断し、運転中ならばステップＳ１５へ進み、運転中でないならばステップＳ２０へ進む。   In step S14, it is determined whether or not the vehicle interior air conditioner system is in operation. If it is in operation, the process proceeds to step S15. If it is not in operation, the process proceeds to step S20.

ステップＳ１５では、車室内用エアコンシステムが冷房運転中かどうかを判断し、冷房運転中ならばステップＳ１６へ進み、冷房運転中でないならばステップＳ２１へ進む。   In step S15, it is determined whether or not the vehicle interior air conditioner system is in the cooling operation. If it is in the cooling operation, the process proceeds to step S16, and if not in the cooling operation, the process proceeds to step S21.

ステップＳ１６では、バッテリ冷却後の空気を車室内へ導入するよう切替ドア６２を制御する。   In step S16, the switching door 62 is controlled so as to introduce the air after battery cooling into the passenger compartment.

ステップＳ１７では、車両用バッテリ冷却システムがバッテリ冷却後の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S17, the vehicle battery cooling system feeds back the air after battery cooling into the vehicle interior to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ１８では、バッテリ冷却の必要がない状態であることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S18, the fact that there is no need for battery cooling is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ１９では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S19, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ２０では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S20, the switching door 62 is controlled so as to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ２１では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S21, the switching door 62 is controlled to exhaust the air after battery cooling out of the passenger compartment, and the process ends.

[車室内空調の冷却性能の向上作用]
実施例３では、エバポレータ３、ブロワファン４からの冷却風によりバッテリケース１内でバッテリを冷却し、その後の排気する空気を切替ドア６２により切り替えて、車室外への排気または、車室内への導入を行う。 [Improvement of cooling performance of vehicle interior air conditioning]
In the third embodiment, the battery is cooled in the battery case 1 by the cooling air from the evaporator 3 and the blower fan 4, and then the air to be exhausted is switched by the switching door 62 so that the exhaust to the outside of the vehicle compartment or to the inside of the vehicle compartment is performed. Make an introduction.

その際には、図６の処理に示すように、車室内を冷房中で、車室内の温度よりバッテリケース１から出る空気が低い場合に、車室内への導入を行い車室内空調に寄与させる。
この場合には、バッテリ２を冷却し、幾分でも吸熱した空気で車室内をさらに冷却するのであるから、排気してしまうのに比べて、熱効率は非常に向上する。
さらに、ステップＳ１７、Ｓ１８の処理により、切替ドア６２の状態、バッテリ冷却状態を車室内エアコンシステムへフィードバックすることにより、より効率的な空調となり、ひいては車両の燃費向上に繋がることになる。 In that case, as shown in the process of FIG. 6, when the vehicle interior is being cooled and the air coming out of the battery case 1 is lower than the temperature in the vehicle interior, introduction into the vehicle interior is performed to contribute to vehicle interior air conditioning. .
In this case, since the battery 2 is cooled and the interior of the vehicle is further cooled with air that has absorbed heat to some extent, the thermal efficiency is greatly improved as compared with exhaust.
Further, by the processing of steps S17 and S18, the state of the switching door 62 and the battery cooling state are fed back to the vehicle interior air conditioner system, so that more efficient air conditioning is achieved, which leads to an improvement in fuel consumption of the vehicle.

効果を説明する。
実施例３の車両用バッテリ冷却システムでは、上記(1),(2)の効果に加えて、以下の効果を有する。
(5)ブロワファン４及びエバポレータ３によりバッテリ２を冷却した後の冷却風を、車室内へ向かう車室内送気部分６１と、車室外へ向かう排気ダクト６の部分に比率自在に配風する切替ドア６２を備えたため、車室内空調の効率化に寄与することができ、ひいては車両の燃費向上に繋げることができる。
その他作用効果は実施例１と同様であるので説明を省略する。 Explain the effect.
The vehicle battery cooling system according to the third embodiment has the following effects in addition to the effects (1) and (2).
(5) Switching to distribute the cooling air after the battery 2 is cooled by the blower fan 4 and the evaporator 3 in a proportionate manner to the interior air supply portion 61 that goes into the vehicle interior and the exhaust duct 6 that goes outside the vehicle interior Since the door 62 is provided, it is possible to contribute to the efficiency of the air conditioning in the vehicle interior, and as a result, the fuel efficiency of the vehicle can be improved.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

実施例４の車両用バッテリ冷却システムは、実施例３の構造において、バッテリ２を冷却した冷却風を暖房にも用いるようにした例である。
構成は実施例３と同様であるので、説明を省略する。
作用を説明する。 The vehicle battery cooling system of the fourth embodiment is an example in which the cooling air that has cooled the battery 2 is also used for heating in the structure of the third embodiment.
Since the configuration is the same as that of the third embodiment, the description thereof is omitted.
The operation will be described.

[車室内空調へ寄与させる制御処理]   [Control processing that contributes to vehicle interior air conditioning]

図７に示すのは、実施例４の車両用バッテリ冷却システムで実行される切替ドア６２の制御処理の流れを示すフローチャートで、以下各ステップについて説明する。なお、図６と同様の処理については、同じステップの符号を付し、説明を省略する。   FIG. 7 is a flowchart showing a flow of control processing of the switching door 62 executed in the vehicle battery cooling system of the fourth embodiment. Each step will be described below. In addition, about the process similar to FIG. 6, the code | symbol of the same step is attached | subjected and description is abbreviate | omitted.

ステップＳ２２では、車室内エアコンシステムが運転中かどうかを判断し、運転中ならばステップＳ２３へ進み、運転中でないならばステップＳ２６へ進む。   In step S22, it is determined whether or not the vehicle interior air conditioner system is in operation. If it is in operation, the process proceeds to step S23, and if it is not in operation, the process proceeds to step S26.

ステップＳ２３では、暖房運転かどうかを判断し、暖房運転であるならばステップＳ２４へ進み、暖房運転でないならばステップＳ２７へ進む。   In step S23, it is determined whether it is a heating operation. If it is a heating operation, the process proceeds to step S24, and if it is not a heating operation, the process proceeds to step S27.

ステップＳ２４では、バッテリ冷却後の空気を車室内へ導入するよう切替ドア６２を制御する。   In step S24, the switching door 62 is controlled to introduce the air after battery cooling into the passenger compartment.

ステップＳ２５では、車両用バッテリ冷却システムがバッテリ冷却後の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S25, the fact that the vehicle battery cooling system is introducing air after battery cooling into the vehicle interior is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process is terminated.

ステップＳ２６では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S26, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ２７では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S27, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

[車室内空調の冷却性能及び暖房性能の向上作用]
実施例４では、実施例３と同様に、車室内をエアコンシステムが冷却する際に、バッテリ冷却後の冷却風が車室内の冷房に寄与できる温度の場合に、車室内にバッテリ冷却後の冷却風を導入する。 [Improvement of cooling and heating performance of cabin air conditioning]
In the fourth embodiment, as in the third embodiment, when the air conditioning system cools the vehicle interior, when the cooling air after the battery cooling has a temperature that can contribute to the cooling of the vehicle interior, the cooling after the battery cooling is performed in the vehicle interior. Introduce wind.

さらに、実施例４では、車室内エアコンシステムが車室内を暖房している際に、車室内の温度よりバッテリ冷却後の冷却風の温度が高い場合に、バッテリ冷却後の冷却風を車室内へ導入して、車室内の暖房に寄与させることができる。
この場合のスポット的な作用効果としては、後部座席を暖めること、後部座席のさらに足元を暖めるなどすれば、車室内温度の暖房の効率化のみならず、体感温度への寄与を行うことになる。 Furthermore, in Example 4, when the vehicle interior air conditioning system is heating the vehicle interior, if the temperature of the cooling air after the battery cooling is higher than the temperature inside the vehicle interior, the cooling air after the battery cooling is sent to the vehicle interior. It can be introduced to contribute to the heating of the passenger compartment.
As a spot effect in this case, if the rear seat is warmed and the feet of the rear seat are further warmed, for example, not only the heating of the cabin temperature is made more efficient, but also a contribution to the sensible temperature is performed. .

効果を説明する。
実施例４の車両用バッテリ冷却システムは、上記(1),(2)の効果に加えて、以下の効果を有する。
(5)´ブロワファン４及びエバポレータ３によりバッテリ２を冷却した後の冷却風を、車室内へ向かう車室内送気部分６１と、車室外へ向かう排気ダクト６の部分に比率自在に配風する切替ドア６２を備えたため、車室内空調としての冷房及び暖房の効率化に寄与させることができる。
その他作用効果は実施例３と同様であるので説明を省略する。 Explain the effect.
The vehicle battery cooling system of the fourth embodiment has the following effects in addition to the effects (1) and (2).
(5) The cooling air after the battery 2 is cooled by the blower fan 4 and the evaporator 3 is distributed in a proportionate manner to the vehicle interior air supply portion 61 going into the vehicle compartment and the exhaust duct 6 going out of the vehicle compartment. Since the switching door 62 is provided, it is possible to contribute to efficiency of cooling and heating as air conditioning in the vehicle interior.
Since other functions and effects are the same as those of the third embodiment, description thereof is omitted.

実施例５の車両用バッテリ冷却システムは、バッテリ冷却用に設けたエバポレータ及びブロワファンによるバッテリ冷却前の冷却風を車室内へ送るよう切り替え自在にし、且つバッテリ冷却後の冷却風を車室内へ送るよう切り替え自在にした例である。
構成を説明する。
図８は実施例５の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。 In the vehicle battery cooling system of the fifth embodiment, the cooling air before the battery cooling by the evaporator and the blower fan provided for battery cooling can be switched to be sent to the vehicle interior, and the cooling air after the battery cooling is sent to the vehicle interior. This is an example of switching freely.
The configuration will be described.
FIG. 8 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the fifth embodiment.

実施例５では、エバポレータ３からバッテリケース１までの吸気ダクト５の途中から、車室内へ接続する吸気ダクト５の車室内送気部分５１を設け、車室内送気部分５１への分岐部に、切替ドア５２を設けて、エバポレータ３等を設置した上流からの空気を車室内送気部分５１へ流すか、バッテリケース１側に流すかを切り替えるようにする。   In the fifth embodiment, a vehicle interior air supply portion 51 of the intake duct 5 connected to the vehicle interior is provided from the middle of the intake duct 5 from the evaporator 3 to the battery case 1, and a branch portion to the vehicle interior air supply portion 51 is provided. A switching door 52 is provided to switch whether the air from the upstream where the evaporator 3 or the like is installed flows to the vehicle interior air supply portion 51 or to the battery case 1 side.

さらに、実施例５では、バッテリケース１から車室外への排気ダクト６の途中から、車室内へ空気を導入するよう接続する排気ダクト６の車室内送気部分６１を設け、車室内送気部分６１への分岐部に、切替ドア６２を設けて、バッテリケース１内で、バッテリ２を冷却した空気を、車室外へ排気するか、車室内へ流すかを切り替えるようにする。
その他構成は、実施例１と同様であるので、説明を省略する。 Furthermore, in the fifth embodiment, a vehicle interior air supply portion 61 of the exhaust duct 6 that is connected to introduce air into the vehicle interior from the middle of the exhaust duct 6 from the battery case 1 to the outside of the vehicle interior is provided. A switching door 62 is provided at a branching portion to 61 so that the air that has cooled the battery 2 in the battery case 1 is switched between exhausting to the outside of the passenger compartment or flowing into the passenger compartment.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

作用を説明する。
[車室内空調へ寄与させる制御処理]
図９，図１０に示すのは、実施例５の車両用バッテリ冷却システムで実行される切替ドア５２、切替ドア６２の制御処理の流れを示すフローチャートで、以下各ステップについて説明する。 The operation will be described.
[Control processing that contributes to vehicle interior air conditioning]
FIG. 9 and FIG. 10 are flowcharts showing the flow of control processing of the switching door 52 and the switching door 62 executed in the vehicle battery cooling system of the fifth embodiment. Each step will be described below.

ステップＳ３１では、バッテリ温度の測定を行う。   In step S31, the battery temperature is measured.

ステップＳ３２では、バッテリ温度が所定温度以下かどうかを判断し、所定温度以下ならばステップＳ４９（図９，図１０中では記号丸１０を介するように示す）へ進み、所定温度を超えているならばステップＳ３３へ進む。   In step S32, it is determined whether or not the battery temperature is equal to or lower than a predetermined temperature. If it is equal to or lower than the predetermined temperature, the process proceeds to step S49 (indicated by symbol 10 in FIGS. 9 and 10). If so, the process proceeds to step S33.

ステップＳ３３では、冷却風のバッテリケース１の出口での温度は、車室内温度以下かどうかを判断し、車室内温度以下ならばステップＳ３４へ進み、車室内温度を超えているならばステップＳ４３へ進む。   In step S33, it is determined whether or not the temperature of the cooling wind at the outlet of the battery case 1 is equal to or lower than the vehicle interior temperature. If the temperature is lower than the vehicle interior temperature, the process proceeds to step S34. move on.

ステップＳ３４では、車室内用エアコンシステムが運転中かどうかを判断し、運転中ならばステップＳ３５へ進み、運転中でないならばステップＳ３９へ進む。   In step S34, it is determined whether or not the vehicle interior air conditioner system is in operation. If it is in operation, the process proceeds to step S35, and if it is not in operation, the process proceeds to step S39.

ステップＳ３５では、車室内用エアコンシステムが冷房運転中かどうかを判断し、冷房運転中ならばステップＳ３６へ進み、冷房運転中でないならばステップＳ４０へ進む。   In step S35, it is determined whether or not the vehicle interior air conditioner system is in the cooling operation. If the cooling operation is being performed, the process proceeds to step S36, and if not, the process proceeds to step S40.

ステップＳ３６では、車室内用エアコンシステムにおける風量は所定風量以上かどうかを判断し、所定風量以上であればステップＳ３７へ進み、所定風量に達しないのであればステップＳ４１へ進む。   In step S36, it is determined whether or not the air volume in the vehicle interior air conditioner system is greater than or equal to a predetermined air volume. If the air volume is greater than or equal to the predetermined air volume, the process proceeds to step S37, and if not, the process proceeds to step S41.

ステップＳ３７では、切替ドア５２を車室内へ冷却風を送るようにし（第１のＲＲ吹き出し口が開）、切替ドア６２を車室外へ冷却風を排出するようにする（第２のＲＲ吹き出し口が閉）。   In step S37, the switching door 52 is made to send cooling air to the vehicle interior (the first RR outlet is opened), and the switching door 62 is made to exhaust cooling air outside the compartment (the second RR outlet). Is closed).

ステップＳ３８では、車両用バッテリ冷却システムがバッテリ冷却前の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S38, the fact that the vehicle battery cooling system is introducing air before battery cooling into the vehicle interior is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ３９では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S39, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ４０では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S40, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ４１では、切替ドア５２をバッテリケース１内部へ冷却風を送るようにし（第１のＲＲ吹き出し口が閉）、切替ドア６２を車室内へ冷却風を送るようにする（第２のＲＲ吹き出し口が開）。   In step S41, the switching door 52 is sent to the inside of the battery case 1 (the first RR outlet is closed), and the switching door 62 is sent to the passenger compartment (the second RR outlet). Mouth open).

ステップＳ４２では、車両用バッテリ冷却システムがバッテリ冷却後の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S42, the vehicle battery cooling system feeds back the air after battery cooling into the vehicle interior to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ４３では、車室内用エアコンシステムが運転中かどうかを判断し、運転中ならばステップＳ４４へ進み、運転中でないならばステップＳ４７へ進む。   In step S43, it is determined whether or not the vehicle interior air conditioner system is in operation. If it is in operation, the process proceeds to step S44, and if it is not in operation, the process proceeds to step S47.

ステップＳ４４では、車室内用エアコンシステムが暖房運転中かどうかを判断し、暖房運転中ならばステップＳ４５へ進み、暖房運転中でないならばステップＳ４８へ進む。   In step S44, it is determined whether or not the vehicle interior air conditioner system is in the heating operation. If it is in the heating operation, the process proceeds to step S45, and if it is not in the heating operation, the process proceeds to step S48.

ステップＳ４５では、バッテリ冷却後の空気を車室内へ導入するよう切替ドア６２を制御する。   In step S45, the switching door 62 is controlled to introduce the air after battery cooling into the vehicle interior.

ステップＳ４６では、車両用バッテリ冷却システムがバッテリ冷却後の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S46, the fact that the vehicle battery cooling system introduces the air after battery cooling into the vehicle interior is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ４７では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S47, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ４８では、バッテリ冷却後の空気を車室外へ排気するよう切替ドア６２を制御し、処理を終了する。   In step S48, the switching door 62 is controlled to exhaust the air after battery cooling to the outside of the passenger compartment, and the process ends.

ステップＳ４９では、車室内用エアコンシステムが運転中かどうかを判断し、運転中ならばステップＳ５０へ進み、運転中でないならばステップＳ５３へ進む。   In step S49, it is determined whether or not the vehicle interior air conditioner system is in operation. If it is in operation, the process proceeds to step S50, and if it is not in operation, the process proceeds to step S53.

ステップＳ５０では、車室内用エアコンシステムが冷房運転中かどうかを判断し、冷房運転中ならばステップＳ５１へ進み、冷房運転中でないならばステップＳ５４へ進む。   In step S50, it is determined whether or not the vehicle interior air conditioner system is in the cooling operation. If it is in the cooling operation, the process proceeds to step S51, and if not in the cooling operation, the process proceeds to step S54.

ステップＳ５１では、切替ドア５２を車室内へ冷却風を送るようにし（第１のＲＲ吹き出し口が開）、切替ドア６２を車室外へ冷却風を排出するようにする（第２のＲＲ吹き出し口が閉）。   In step S51, the switching door 52 is made to send cooling air to the vehicle interior (the first RR outlet is opened), and the switching door 62 is made to discharge cooling air outside the passenger compartment (the second RR outlet). Is closed).

ステップＳ５２では、車両用バッテリ冷却システムがバッテリ冷却前の空気を車室内へ導入していることを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S52, the fact that the vehicle battery cooling system is introducing air before battery cooling into the vehicle interior is fed back to the vehicle interior air conditioning system to encourage more efficient driving, and the process is terminated.

ステップＳ５３では、車室内空調へ寄与させる制御をしないことを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S53, the control not to contribute to the vehicle interior air conditioning is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process ends.

ステップＳ５４では、車室内空調へ寄与させる制御をしないことを車室内用エアコンシステムへフィードバックし、より効率的な運転を促すようにし、処理を終了する。   In step S54, the control not to contribute to the vehicle interior air conditioning is fed back to the vehicle interior air conditioner system to encourage more efficient driving, and the process is terminated.

[車室内空調の冷却性能及び暖房性能の向上作用]
実施例５では、バッテリ冷却後の冷却風が車室内空気より高い場合には、車室内の暖房の効率化に寄与させるように、バッテリ冷却後の冷却風を車室内へ導入する（ステップＳ４４〜Ｓ４６）。
さらに、バッテリ２の冷却の必要性が少ない場合、つまりバッテリ２の温度が所定温度以下の場合には、エバポレータ３及びブロワファン４によるバッテリ２の冷却用の冷却風をバッテリ冷却前で切り替えて、車室内へ送り、車室内冷房の効率化に寄与させる（ステップＳ５０〜Ｓ５２）。 [Improvement of cooling and heating performance of cabin air conditioning]
In the fifth embodiment, when the cooling air after the battery cooling is higher than the air in the passenger compartment, the cooling air after the battery cooling is introduced into the passenger compartment so as to contribute to the efficiency of heating in the passenger compartment (steps S44 to S44). S46).
Further, when the necessity for cooling the battery 2 is small, that is, when the temperature of the battery 2 is lower than a predetermined temperature, the cooling air for cooling the battery 2 by the evaporator 3 and the blower fan 4 is switched before the battery cooling, It is sent to the passenger compartment to contribute to the efficiency of cooling the passenger compartment (steps S50 to S52).

さらに、バッテリ温度が所定温度を超える場合には、基本的には、バッテリ２を冷却後の冷却風が車室内温度より低い場合に、車室内の空調の効率化に寄与させる（ステップＳ４１）。
但し、車室内用エアコンシステムが、冷房状態であり、エアコン風量が所定風量以上の場合、つまり、非常に強い冷却を必要としている場合には、バッテリ２の冷却前の冷却風を車室内に導入させる。
これにより、車室内用エアコンシステムは、より効率的な運転を行うことが可能となる。 Further, when the battery temperature exceeds the predetermined temperature, basically, when the cooling air after cooling the battery 2 is lower than the vehicle interior temperature, it is made to contribute to the efficiency of air conditioning in the vehicle interior (step S41).
However, when the air conditioner system for the vehicle interior is in a cooling state and the air flow rate is greater than or equal to the predetermined air flow rate, that is, when very strong cooling is required, the cooling air before cooling the battery 2 is introduced into the vehicle interior. Let
As a result, the vehicle interior air conditioner system can perform more efficient operation.

なお、その場合には、ステップＳ３７に示すように１００％の切替を行うようにしてもよいし、配風の比率を例えば８０％車室内導入、２０％バッテリ２へと言うようにしてもよい。また、段階的な切替を行ってもよい。
その他作用効果は実施例１と同様であるので、説明を省略する。 In this case, 100% switching may be performed as shown in step S37, or the air distribution ratio may be, for example, 80% introduction into the vehicle interior and 20% battery 2. . Further, stepwise switching may be performed.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

効果を説明する。
実施例５の車両用バッテリシステムにあっては、上記(1),(2)の効果に加えて、以下の効果を有する。
(5)´´ブロワファン４及びエバポレータ３からの冷却風を、バッテリ２へ向かう吸気ダクト５の部分と、車室内へ向かう車室内送気部分５１とに比率自在に配風する切替ドア５２を備え、ブロワファン４及びエバポレータ３によりバッテリ２を冷却した後の冷却風を、車室内へ向かう車室内送気部分６１と、車室外へ向かう排気ダクト６の部分に比率自在に配風する切替ドア６２を備え、車室内用エアコンシステムの風量が所定風量を超え、負荷が高い場合には、バッテリ２の冷却前の冷却風を車室内へ導入するため、バッテリを充分に冷却するとともに、車室内エアコンシステムの効率化に寄与することができる。
その他作用効果は実施例１と同様であるので説明を省略する。 Explain the effect.
The vehicle battery system according to the fifth embodiment has the following effects in addition to the effects (1) and (2).
(5) A switching door 52 that distributes the cooling air from the blower fan 4 and the evaporator 3 in proportion to the portion of the intake duct 5 toward the battery 2 and the air supply portion 51 in the vehicle interior toward the vehicle interior. A switching door that distributes the cooling air after the battery 2 is cooled by the blower fan 4 and the evaporator 3 in a proportionate manner to the vehicle interior air supply portion 61 that goes into the vehicle interior and the exhaust duct 6 that goes outside the vehicle compartment 62, when the air volume of the air conditioner system for the vehicle interior exceeds a predetermined air volume and the load is high, the cooling air before cooling the battery 2 is introduced into the vehicle interior, so that the battery is sufficiently cooled, It can contribute to the efficiency improvement of the air conditioning system.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

実施例６の車両用バッテリ冷却システムは、バッテリを冷却する冷媒として液体冷媒を用いて閉じた系を構成し、車室内のエアコンシステムの冷媒により、バッテリ冷却用の液体冷媒を冷却する第１の熱交換器と、バッテリを冷却する冷却風を生成するための第２の熱交換器を設けた例である。
構成を説明する。 The vehicle battery cooling system according to the sixth embodiment configures a closed system using liquid refrigerant as a refrigerant for cooling the battery, and first cools the liquid refrigerant for battery cooling with the refrigerant of the air conditioner system in the vehicle interior. It is the example which provided the 2nd heat exchanger for producing | generating the heat exchanger and the cooling air which cools a battery.
The configuration will be described.

図１１は、実施例６の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。
実施例６では、車室内エアコンシステムからの冷媒ライン２０３、２０４を熱交換器３１に接続して、車室内エアコンシステムの冷媒により、バッテリ冷却用のＬＬＣ等の液体冷媒を冷却する。 FIG. 11 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the sixth embodiment.
In the sixth embodiment, the refrigerant lines 203 and 204 from the vehicle interior air conditioner system are connected to the heat exchanger 31, and the liquid refrigerant such as LLC for battery cooling is cooled by the refrigerant of the vehicle interior air conditioner system.

この液体冷媒は、電動ポンプ８１により液体冷媒ライン９を循環し、吸気ダクト５内のブロワファン４の下流に設けたエバポレータ３２によりバッテリ２への送風の冷却を行う構造である。
その他構成は実施例１と同様であるので説明を省略する。 This liquid refrigerant circulates in the liquid refrigerant line 9 by the electric pump 81 and cools the air blown to the battery 2 by the evaporator 32 provided downstream of the blower fan 4 in the intake duct 5.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

作用を説明する。
[急激な温度変化の抑制]
実施例６の車両用バッテリ冷却システムでは、熱交換器３１において、冷媒とＬＬＣ等の液体冷媒の熱交換を行い、ＬＬＣを冷却し、低温化したＬＬＣを用いてエバポレータ３２により送風空気を冷却し、バッテリ２の冷却を行う。 The operation will be described.
[Suppressing rapid temperature changes]
In the vehicle battery cooling system of the sixth embodiment, the heat exchanger 31 performs heat exchange between the refrigerant and a liquid refrigerant such as LLC, cools the LLC, and cools the blown air by the evaporator 32 using the cooled LLC. Then, the battery 2 is cooled.

バッテリ２は、充放電の繰り返しにより、徐々に温度が上昇するものであるが、冷媒による冷却風は比較的急激な温度変化をさせるため、これを緩和する制御が必要となる。実施例６では、通常ガス状で、急激な温度変化をさせる冷媒に対して、温度への感度が鈍いＬＬＣ等の液体冷媒へ熱交換させたものを用いることによって、冷却風の温度変化をバッテリ２の温度変化に適した緩やかなものにし、簡素な制御でも適確な冷却を行うようにしている。   The battery 2 gradually rises in temperature due to repeated charging and discharging, but the cooling air from the refrigerant changes in temperature relatively abruptly, so control to alleviate this is necessary. In the sixth embodiment, the temperature change of the cooling wind is changed to a battery by using a refrigerant that is heat-exchanged to a liquid refrigerant such as LLC, which is dull in temperature sensitivity, with respect to a refrigerant that is normally in a gaseous state and undergoes a rapid temperature change. It is a gentle one suitable for temperature change of 2, and an accurate cooling is performed even with simple control.

効果を説明する。
実施例６の車両用バッテリ冷却システムでは、上記(1)の効果に加えて、以下の効果を有する。
(3)バッテリ２を冷却するエバポレータ３２の冷媒は、バッテリ冷却用に循環させる液体冷媒とし、液体冷媒を車室内空調用の冷媒で冷却する熱交換器３１を備えるようにしたため、容易な制御で、適確なバッテリ冷却を行うことができる。
その他作用効果は実施例１と同様であるので説明を省略する。 Explain the effect.
The vehicle battery cooling system according to the sixth embodiment has the following effects in addition to the effect (1).
(3) The refrigerant of the evaporator 32 that cools the battery 2 is a liquid refrigerant that is circulated for battery cooling, and the heat exchanger 31 that cools the liquid refrigerant with a refrigerant for air conditioning in the vehicle interior is provided. , Accurate battery cooling can be performed.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

実施例７の車両用バッテリ冷却システムは、液体冷媒により生成する冷却風でバッテリを冷却し、バッテリ冷却前の冷却風を車室内へ導入するよう切り替えを行う例である。
構成を説明する。
図１２は、実施例７の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。 The vehicle battery cooling system according to the seventh embodiment is an example in which the battery is cooled by the cooling air generated by the liquid refrigerant, and switching is performed so that the cooling air before the battery cooling is introduced into the vehicle interior.
The configuration will be described.
FIG. 12 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the seventh embodiment.

実施例７は、液体冷媒ライン９を循環する液体冷媒を、熱交換器３１により車室内用エアコンシステムの冷媒で冷却し、エバポレータ３２によりバッテリ冷却風を生成する構造である。
さらに実施例７では、エバポレータ３２からバッテリケース１までの吸気ダクト５の途中から、車室内へ接続する吸気ダクト５の車室内送気部分５１を設ける。
そして、さらに吸気ダクト５の車室内送気部分５１への分岐部に、切替ドア５２を設けて、エバポレータ３２等を設置した上流からの空気を車室内送気部分５１へ流すか、バッテリケース１側に流すかを切り替えるようにする。
その他構成は実施例６と同様であるので説明を省略する。 In the seventh embodiment, the liquid refrigerant circulating in the liquid refrigerant line 9 is cooled by the heat exchanger 31 with the refrigerant of the air conditioner system for the vehicle interior, and the battery 32 is generated by the evaporator 32.
Further, in the seventh embodiment, a vehicle interior air supply portion 51 of the intake duct 5 connected to the vehicle interior is provided in the middle of the intake duct 5 from the evaporator 32 to the battery case 1.
Further, a switching door 52 is provided at a branching portion of the intake duct 5 to the vehicle interior air supply portion 51, and air from the upstream where the evaporator 32 or the like is installed flows to the vehicle interior air supply portion 51, or the battery case 1 Switch to the side.
Since other configurations are the same as those of the sixth embodiment, description thereof is omitted.

作用を説明する。
[急激な温度変化の抑制と車室内空調の冷却性能の向上作用]
実施例７では、車室内用エアコンシステムの冷媒により、バッテリ冷却用の液体冷媒を冷却して、急激な温度変化の抑制を行い、容易な制御で適確なバッテリ冷却を行い、バッテリの冷却の必要性が少ない場合には、切替ドア５２によりバッテリ冷却前の冷却風を車室内へ送り車室内空調の冷却性能を向上させる。 The operation will be described.
[Suppressing rapid temperature changes and improving cooling performance of vehicle interior air conditioning]
In the seventh embodiment, the liquid refrigerant for cooling the battery is cooled by the refrigerant of the air conditioner system for the passenger compartment, the rapid temperature change is suppressed, the battery is accurately cooled by easy control, and the cooling of the battery is performed. When there is little necessity, the cooling air before battery cooling is sent to the vehicle interior by the switching door 52 to improve the cooling performance of the vehicle interior air conditioning.

効果を説明する。
実施例７の車両用バッテリ冷却システムでは、上記(1),(3)の効果に加えて、以下の効果を有する。
(4)´バッテリ２を冷却するエバポレータ３２の冷媒は、バッテリ冷却用に循環させる液体冷媒とし、液体冷媒を車室内空調用の冷媒で冷却する熱交換器３１を備えるようにし、ブロワファン４及びエバポレータ３２からの冷却風を、バッテリ２へ向かう吸気ダクト５の部分と、車室内へ向かう車室内送気部分５１とに比率自在に配風する切替ドア５２を備えたため、容易な制御で、適確なバッテリ冷却を行うことができ、車室内空調の冷却性能の向上を行うことができる。
その他作用効果は実施例６と同様であるので説明を省略する。 Explain the effect.
The vehicle battery cooling system according to the seventh embodiment has the following effects in addition to the effects (1) and (3).
(4) ′ The refrigerant of the evaporator 32 that cools the battery 2 is a liquid refrigerant that is circulated for battery cooling, and includes a heat exchanger 31 that cools the liquid refrigerant with a refrigerant for air conditioning in the vehicle interior. A switching door 52 that distributes the cooling air from the evaporator 32 in proportion to the portion of the intake duct 5 directed toward the battery 2 and the air supply portion 51 directed toward the vehicle interior is provided with an easy control. Accurate battery cooling can be performed, and the cooling performance of the vehicle interior air conditioning can be improved.
Since other functions and effects are the same as those of the sixth embodiment, description thereof is omitted.

実施例８の車両用バッテリ冷却システムは、液体冷媒により生成する冷却風でバッテリを冷却し、バッテリ冷却後の冷却風を車室内へ導入するよう切り替えを行う例である。
構成を説明する。
図１３は、実施例８の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。 The vehicular battery cooling system according to the eighth embodiment is an example in which the battery is cooled with cooling air generated by liquid refrigerant, and switching is performed so that the cooling air after battery cooling is introduced into the vehicle interior.
The configuration will be described.
FIG. 13 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system of the eighth embodiment.

実施例８は、液体冷媒ライン９を循環する液体冷媒を、熱交換器３１により車室内用エアコンシステムの冷媒で冷却し、エバポレータ３２によりバッテリ冷却風を生成する構造である。
さらに実施例８では、バッテリケース１から車室外への排気ダクト６の途中から、車室内へ空気を導入するよう接続する排気ダクト６の車室内送気部分６１を設ける。
そして、さらに排気ダクト６の車室内送気部分６１への分岐部に、切替ドア６２を設けて、バッテリケース１内で、バッテリ２を冷却した空気を、車室外へ排気するか、車室内に流すかを切り替えるようにする。
その他構成は実施例６と同様であるので説明を省略する。 In the eighth embodiment, the liquid refrigerant circulating in the liquid refrigerant line 9 is cooled by the heat exchanger 31 with the refrigerant of the air conditioner system for the passenger compartment, and the evaporator 32 generates the battery cooling air.
Further, in the eighth embodiment, a vehicle interior air supply portion 61 of the exhaust duct 6 connected to introduce air into the vehicle interior from the middle of the exhaust duct 6 from the battery case 1 to the outside of the vehicle interior is provided.
Further, a switching door 62 is provided at a branching portion of the exhaust duct 6 to the air supply part 61 in the vehicle interior, and the air that has cooled the battery 2 in the battery case 1 is exhausted outside the vehicle interior, or inside the vehicle interior. Switch between flowing.
Since other configurations are the same as those of the sixth embodiment, description thereof is omitted.

作用を説明する。
[急激な温度変化の抑制と車室内空調の冷却性能の向上作用]
実施例８では、車室内用エアコンシステムの冷媒により、バッテリ冷却用の液体冷媒を冷却して、急激な温度変化の抑制を行い、容易な制御で適確なバッテリ冷却を行う。
さらに、実施例８の車両用バッテリ冷却システムでは、図６に示した制御処理により車室内空調における冷房の効率化に寄与させる作用を有する。
また、図７に示した制御処理により、車室内空調における冷房及び暖房の効率化に寄与させる作用も有する。 The operation will be described.
[Suppressing rapid temperature changes and improving cooling performance of vehicle interior air conditioning]
In the eighth embodiment, the liquid refrigerant for cooling the battery is cooled by the refrigerant of the air conditioner system for the passenger compartment, and the rapid temperature change is suppressed, and accurate battery cooling is performed with easy control.
Furthermore, the vehicle battery cooling system according to the eighth embodiment has an effect of contributing to the efficiency of cooling in the vehicle interior air conditioning by the control process shown in FIG.
In addition, the control process shown in FIG. 7 also has an effect of contributing to efficiency of cooling and heating in the air conditioning in the passenger compartment.

効果を説明する。実施例８の車両用バッテリ冷却システムでは、上記(1),(3)の効果に加えて、以下の効果を有する。
(5)´´´バッテリ２を冷却するエバポレータ３２の冷媒は、バッテリ冷却用に循環させる液体冷媒とし、液体冷媒を車室内空調用の冷媒で冷却する熱交換器３１を備えるようにし、ブロワファン４及びエバポレータ３２によりバッテリ２を冷却した後の冷却風を、車室内へ向かう車室内送気部分６１と、車室外へ向かう排気ダクト６の部分に比率自在に配風する切替ドア６２を備えたため、容易な制御で、適確なバッテリ冷却を行うことができ、車室内空調としての冷房、または冷房及び暖房の効率化に寄与させることができる。
その他作用効果は実施例６と同様であるので説明を省略する。 Explain the effect. The vehicle battery cooling system according to the eighth embodiment has the following effects in addition to the effects (1) and (3).
(5) The refrigerant of the evaporator 32 that cools the battery 2 is a liquid refrigerant that is circulated for battery cooling, and is provided with a heat exchanger 31 that cools the liquid refrigerant with a refrigerant for air conditioning in the vehicle interior. 4 and the switching door 62 that distributes the cooling air after the battery 2 is cooled by the evaporator 32 to the vehicle interior air supply portion 61 that goes into the vehicle interior and the exhaust duct 6 that goes outside the vehicle compartment in a proportionate manner. Thus, it is possible to perform accurate battery cooling with easy control, and it is possible to contribute to cooling as vehicle interior air conditioning, or efficiency of cooling and heating.
Since other functions and effects are the same as those of the sixth embodiment, description thereof is omitted.

実施例９の車両用バッテリ冷却システムは、液体冷媒により生成する冷却風でバッテリを冷却し、バッテリ冷却前、及びバッテリ冷却後の冷却風を車室内へ導入するよう切り替えを行う例である。
図１４は、実施例９の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。
実施例９は、液体冷媒ライン９を循環する液体冷媒を、熱交換器３１により車室内用エアコンシステムの冷媒で冷却し、エバポレータ３２によりバッテリ冷却風を生成する構造である。 The vehicle battery cooling system according to the ninth embodiment is an example in which the battery is cooled by cooling air generated by liquid refrigerant, and switching is performed so that cooling air before and after battery cooling is introduced into the vehicle interior.
FIG. 14 is an explanatory diagram of a battery cooling structure in the vehicle battery cooling system according to the ninth embodiment.
In the ninth embodiment, the liquid refrigerant circulating in the liquid refrigerant line 9 is cooled by the heat exchanger 31 with the refrigerant of the air conditioner system for the passenger compartment, and the evaporator 32 generates the battery cooling air.

実施例９では、エバポレータ３２からバッテリケース１までの吸気ダクト５の途中から、車室内へ接続する吸気ダクト５の車室内送気部分５１を設け、車室内送気部分５１への分岐部に、切替ドア５２を設けて、エバポレータ３２等を設置した上流からの空気を車室内送気部分５１へ流すか、バッテリケース１側に流すかを切り替えるようにする。   In the ninth embodiment, a vehicle interior air supply portion 51 of the intake duct 5 connected to the vehicle interior is provided from the middle of the intake duct 5 from the evaporator 32 to the battery case 1, and a branch portion to the vehicle interior air supply portion 51 is provided. A switching door 52 is provided to switch whether the air from the upstream where the evaporator 32 or the like is installed flows to the vehicle interior air supply portion 51 or to the battery case 1 side.

さらに、実施例９では、バッテリケース１から車室外への排気ダクト６の途中から、車室内へ空気を導入するよう接続する排気ダクト６の車室内送気部分６１を設け、車室内送気部分６１への分岐部に、切替ドア６２を設けて、バッテリケース１内で、バッテリ２を冷却した空気を、車室外へ排気するか、車室内に流すかを切り替えるようにする。
その他構成は、実施例６と同様であるので、説明を省略する。 Further, in the ninth embodiment, a vehicle interior air supply portion 61 of the exhaust duct 6 that is connected to introduce air into the vehicle interior from the middle of the exhaust duct 6 from the battery case 1 to the outside of the vehicle interior is provided. A switching door 62 is provided at the branching portion to 61 so that the air that has cooled the battery 2 in the battery case 1 is switched between exhausting to the outside of the passenger compartment or flowing into the passenger compartment.
Since other configurations are the same as those of the sixth embodiment, description thereof is omitted.

作用を説明する。
[急激な温度変化の抑制と車室内空調の冷却性能の向上作用]
実施例９では、車室内用エアコンシステムの冷媒により、バッテリ冷却用の液体冷媒を冷却して、急激な温度変化の抑制を行い、容易な制御で適確なバッテリ冷却を行う。
さらに、実施例９の車両用バッテリ冷却システムでは、図９，図１０に示した制御処理により車室内空調における冷房及び暖房の効率化に寄与させる作用を有する。
図９，図１０の制御処理による冷房及び暖房の効率化に寄与させる作用の詳細は実施例５と同様であるので説明を省略する。 The operation will be described.
[Suppressing rapid temperature changes and improving cooling performance of vehicle interior air conditioning]
In the ninth embodiment, the liquid refrigerant for cooling the battery is cooled by the refrigerant of the air conditioner system for the passenger compartment, and the rapid temperature change is suppressed, and the battery is accurately cooled by easy control.
Furthermore, the vehicle battery cooling system according to the ninth embodiment has an effect of contributing to the efficiency of cooling and heating in the air conditioning of the vehicle interior by the control processing shown in FIGS.
The details of the action that contributes to the efficiency of cooling and heating by the control processing of FIGS. 9 and 10 are the same as those in the fifth embodiment, and thus the description thereof is omitted.

効果を説明する。実施例９の車両用バッテリ冷却システムでは、上記(1),(3)の効果に加えて、以下の効果を有する。
(5)´´´´バッテリ２を冷却するエバポレータ３２の冷媒は、バッテリ冷却用に循環させる液体冷媒とし、液体冷媒を車室内空調用の冷媒で冷却する熱交換器３１を備えるようにし、ブロワファン４及びエバポレータ３２からの冷却風を、バッテリ２へ向かう吸気ダクト５の部分と、車室内へ向かう車室内送気部分５１とに比率自在に配風する切替ドア５２と、
ブロワファン４及びエバポレータ３によりバッテリ２を冷却した後の冷却風を、車室内へ向かう車室内送気部分６１と、車室外へ向かう排気ダクト６の部分に比率自在に配風する切替ドア６２を備えたため、容易な制御で、適確なバッテリ冷却を行うことができ、車室内空調としての冷房、または冷房及び暖房の効率化に寄与させることができる。
その他作用効果は実施例６と同様であるので説明を省略する。 Explain the effect. The vehicle battery cooling system according to the ninth embodiment has the following effects in addition to the effects (1) and (3).
(5) The refrigerant of the evaporator 32 that cools the battery 2 is a liquid refrigerant that is circulated for battery cooling, and is provided with a heat exchanger 31 that cools the liquid refrigerant with a refrigerant for air conditioning in the vehicle interior. A switching door 52 that distributes the cooling air from the fan 4 and the evaporator 32 in proportion to the portion of the intake duct 5 toward the battery 2 and the air supply portion 51 in the vehicle interior toward the vehicle interior;
A switching door 62 that distributes the cooling air after cooling the battery 2 by the blower fan 4 and the evaporator 3 in a proportionate manner to the interior air supply portion 61 that goes into the vehicle interior and the exhaust duct 6 that goes outside the vehicle interior. Since it is provided, it is possible to perform accurate battery cooling with easy control, and it is possible to contribute to cooling as vehicle interior air conditioning, or efficiency of cooling and heating.
Since other functions and effects are the same as those of the sixth embodiment, description thereof is omitted.

以上、本発明の車両用バッテリ冷却システムを実施例１〜実施例９に基づき説明してきたが、具体的な構成については、これらの実施例に限られるものではなく、特許請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、設計の変更や追加等は許容される。
実施例の車両用バッテリ冷却システムは、ハイブリッド車両や電気自動車に用いられるものとして説明したが、他にも例えば、燃料電池車などに用いられるものであってもよい。 As mentioned above, although the vehicle battery cooling system of the present invention has been described based on the first to ninth embodiments, the specific configuration is not limited to these embodiments, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention according to the paragraph.
Although the vehicle battery cooling system of the embodiment has been described as being used for a hybrid vehicle or an electric vehicle, the vehicle battery cooling system may be used for a fuel cell vehicle, for example.

実施例１の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムにおけるバッテリ設置位置の説明図である。It is explanatory drawing of the battery installation position in the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムと協調するエアコンシステムの説明図である。It is explanatory drawing of the air conditioning system which cooperates with the battery cooling system for vehicles of Example 1. FIG. 実施例２の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 2. FIG. 実施例３の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 3. FIG. 実施例３の車両用バッテリ冷却システムで実行される切替ドア６２の制御処理の流れを示すフローチャートである。12 is a flowchart showing a flow of control processing of a switching door 62 executed in the vehicle battery cooling system of the third embodiment. 実施例４の車両用バッテリ冷却システムで実行される切替ドア６２の制御処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the control processing of the switching door 62 performed with the vehicle battery cooling system of Example 4. FIG. 実施例５の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 5. FIG. 実施例５の車両用バッテリ冷却システムで実行される切替ドア５２、切替ドア６２の制御処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the control processing of the switch door 52 and the switch door 62 performed with the battery cooling system for vehicles of Example 5. FIG. 実施例５の車両用バッテリ冷却システムで実行される切替ドア５２、切替ドア６２の制御処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the control processing of the switch door 52 and the switch door 62 performed with the battery cooling system for vehicles of Example 5. FIG. 実施例６の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 6. FIG. 実施例７の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 7. FIG. 実施例８の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 8. FIG. 実施例９の車両用バッテリ冷却システムにおけるバッテリ冷却構造の説明図である。It is explanatory drawing of the battery cooling structure in the battery cooling system for vehicles of Example 9. FIG.

符号の説明Explanation of symbols

１ バッテリケース
２ バッテリ
３ エバポレータ
４ ブロワファン
５ 吸気ダクト
６ 排気ダクト
７ 車体パネル
８ 電磁弁
９ 液体冷媒ライン
３１ 熱交換器
３２ エバポレータ
５１ 車室内送気部分
５２ 切替ドア
６１ 車室内送気部分
６２ 切替ドア
８１ 電動ポンプ
１０１ コンデンサ
１０２ 電動コンプレッサ
１０３ リキッドタンク
１０４ ファン
１０５ コントローラ
１０６ 空調用エバポレータ
２０１ 冷媒ライン
２０２ 冷媒ライン
２０３ 冷媒ライン
２０４ 冷媒ライン DESCRIPTION OF SYMBOLS 1 Battery case 2 Battery 3 Evaporator 4 Blower fan 5 Intake duct 6 Exhaust duct 7 Body panel 8 Solenoid valve 9 Liquid refrigerant line 31 Heat exchanger 32 Evaporator 51 Car interior air supply part 52 Switching door 61 Car interior air supply part 62 Switching door 81 Electric pump 101 Condenser 102 Electric compressor 103 Liquid tank 104 Fan 105 Controller 106 Air conditioning evaporator 201 Refrigerant line 202 Refrigerant line 203 Refrigerant line 204 Refrigerant line

Claims (5)

車両に設置され走行に用いられるバッテリと、
車室内空調用と別に設けられ、前記バッテリへの送風を発生させる送風機と、
車室内空調用と別に設けられ、内部を流れる冷媒と前記バッテリへ送る送風との熱交換により送風を冷却する熱交換器と、
を備えることを特徴とする車両用バッテリ冷却システム。 A battery installed in a vehicle and used for traveling;
A blower that is provided separately from the vehicle interior air conditioner and generates air to the battery;
A heat exchanger that is provided separately from the vehicle interior air conditioner and cools the air by heat exchange between the refrigerant flowing inside and the air sent to the battery;
A battery cooling system for a vehicle, comprising: 請求項１に記載の車両用バッテリ冷却システムにおいて、
前記熱交換器は、エバポレータであり、車室内空調と冷媒を共用するものである、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery cooling system according to claim 1,
The heat exchanger is an evaporator, and uses a vehicle interior air conditioner and a refrigerant.
A vehicle battery cooling system. 請求項１に記載の車両用バッテリ冷却システムにおいて、
前記バッテリを冷却する前記熱交換器の冷媒は、バッテリ冷却用に循環させる液体冷媒とし、
前記液体冷媒を車室内空調用の冷媒で冷却する液体冷媒用熱交換器を備えるようにした、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery cooling system according to claim 1,
The refrigerant of the heat exchanger that cools the battery is a liquid refrigerant that is circulated for battery cooling,
A liquid refrigerant heat exchanger that cools the liquid refrigerant with a refrigerant for air conditioning in a vehicle interior is provided.
A vehicle battery cooling system. 請求項１〜請求項３のいずれか１項に記載の車両用バッテリ冷却システムにおいて、
前記送風機及び前記熱交換器からの冷却風を、前記バッテリへ向かう送風路と、車室内へ向かう送風路とに比率自在に配風する配風手段を備えた、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery cooling system according to any one of claims 1 to 3,
The cooling air from the blower and the heat exchanger is provided with air distribution means that distributes air in a proportionate manner to the air passage toward the battery and the air passage toward the vehicle interior.
A vehicle battery cooling system. 請求項１〜請求項４のいずれか１項に記載の車両用バッテリ冷却システムにおいて、
前記送風機及び前記熱交換器により前記バッテリを冷却した後の冷却風を、車室内へ向かう送風路と、車室外へ向かう排風路に比率自在に配風する配風手段を備えた、
ことを特徴とする車両用バッテリ冷却システム。 In the vehicle battery cooling system according to any one of claims 1 to 4,
Cooling air after cooling the battery by the blower and the heat exchanger is provided with air distribution means that distributes the air in a proportionate manner to the air flow path toward the vehicle interior and the air exhaust path toward the outside of the vehicle interior,
A vehicle battery cooling system.
JP2006233227A 2006-08-30 2006-08-30 Vehicular battery cooling system Pending JP2008055990A (en)

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