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JP2010272289A - Battery temperature control device - Google Patents

Battery temperature control device Download PDF

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Publication number
JP2010272289A
JP2010272289A JP2009121984A JP2009121984A JP2010272289A JP 2010272289 A JP2010272289 A JP 2010272289A JP 2009121984 A JP2009121984 A JP 2009121984A JP 2009121984 A JP2009121984 A JP 2009121984A JP 2010272289 A JP2010272289 A JP 2010272289A
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battery
refrigerant
temperature
flow path
refrigerant flow
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JP5556058B2 (en
Inventor
Shinichiro Mizoguchi
真一朗 溝口
Masaaki Tokuda
正章 徳田
Satoshi Ogiwara
智 荻原
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • 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
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • 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
    • B60L58/27—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 heating
    • 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
    • B60L2240/36—Temperature of vehicle components or parts
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To reduce electric energy required for warming up a battery. <P>SOLUTION: A DC/DC converter 23 and a charger 24 which are high power system components are disposed in a battery coolant passage 3, and a coolant supplied to a battery 21 is heated by making use of exhaust heat from the DC/DC converter 23 and the charger 24. A bypass passage 31 to circulate the coolant by bypassing the battery 21 is also provided. Thereby, electric energy required for warming up the battery 21 can be reduced. The temperatures of the battery 21, the DC/DC converter 23, and the charger 24 each having different temperature control ranges can be also individually controlled. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、ハイブリッド自動車や電気自動車等の電動車両に搭載されたバッテリの温度を制御するバッテリ温度制御装置に関する。   The present invention relates to a battery temperature control device that controls the temperature of a battery mounted on an electric vehicle such as a hybrid vehicle or an electric vehicle.

従来より、充電時のバッテリの温度状態に応じて、車室内空調用の冷媒が循環する空調用冷媒流路と車両に搭載されたバッテリの温度を調整する冷媒が循環するバッテリ用冷媒流路とを接続することにより、バッテリの温度を充電に好適な温度に制御して効率のよいバッテリの充電を可能にした電気自動車のバッテリ温度制御装置が知られている。   Conventionally, according to the temperature state of the battery at the time of charging, an air conditioning refrigerant flow path through which a refrigerant for air conditioning in the vehicle circulates, and a battery refrigerant flow path through which a refrigerant that adjusts the temperature of the battery mounted on the vehicle circulates There is known a battery temperature control device for an electric vehicle which enables efficient battery charging by controlling the temperature of the battery to a temperature suitable for charging.

特開２００２−３５２８６７号公報JP 2002-352867 A

従来のバッテリ温度制御装置によれば、バッテリを加温する際、空調用冷媒流路とバッテリ用冷媒流路とを接続し、空調用冷媒流路に設けられたヒータにより冷媒を加熱する構成になっているために、消費電力量が多くなり、電気自動車の動力性能や航続距離が減少してしまう。   According to the conventional battery temperature control device, when the battery is heated, the air conditioning refrigerant passage and the battery refrigerant passage are connected, and the refrigerant is heated by the heater provided in the air conditioning refrigerant passage. Therefore, the amount of power consumption increases, and the power performance and cruising distance of the electric vehicle decrease.

本発明は上記課題を解決するためになされたものであり、その目的はバッテリ加温に要する電力量を低減可能なバッテリ温度制御装置を提供することにある。   The present invention has been made to solve the above problems, and an object of the present invention is to provide a battery temperature control device capable of reducing the amount of electric power required for battery heating.

本発明に係るバッテリ温度制御装置では、バッテリ用冷媒流路は、強電系部品の排熱により流路内の冷媒を加熱する加熱手段と、バッテリを迂回して冷媒を循環させるバイパス流路を備える。   In the battery temperature control device according to the present invention, the battery refrigerant flow path includes a heating unit that heats the refrigerant in the flow path by exhaust heat of the high-power components, and a bypass flow path that circulates the refrigerant around the battery. .

本発明に係るバッテリ温度制御装置によれば、強電系部品の排熱を利用してバッテリに加温するので、バッテリ加温に要する電力量を低減することができる。   According to the battery temperature control device of the present invention, since the battery is heated using the exhaust heat of the high-power components, the amount of power required for battery heating can be reduced.

本発明の実施形態となるバッテリ温度制御装置の構成を示すブロック図である。It is a block diagram which shows the structure of the battery temperature control apparatus used as embodiment of this invention. 極低温時における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 at the time of a cryogenic temperature. 低温時における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 at the time of low temperature. 通常時における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 in normal time. 中温時における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 at the time of middle temperature. 高温時（１）における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 at the time of high temperature (1). 高温時（２）における図１に示すバッテリ温度制御装置の動作を説明するためのブロック図である。It is a block diagram for demonstrating operation | movement of the battery temperature control apparatus shown in FIG. 1 at the time of high temperature (2).

以下、図面を参照して、本発明の実施形態となるバッテリ温度制御装置の構成及びその動作を説明する。   Hereinafter, the configuration and operation of a battery temperature control apparatus according to an embodiment of the present invention will be described with reference to the drawings.

〔バッテリ温度制御装置の構成〕
本発明の実施形態となるバッテリ温度制御装置はハイブリッド自動車や電気自動車等の電動車両に搭載される。本発明の実施形態となるバッテリ温度制御装置１は、図１に示すように、車室内空調用の冷媒が循環する空調用冷媒流路２と、電動車両の駆動源としてのバッテリ（ＢＡＴＴ）２１の温度を調整するための冷媒が循環するバッテリ用冷媒流路３と、バッテリ２１の温度を充電に好適な温度（例えば５〜２０℃）に制御するコントローラ４を備える。空調用冷媒流路２とバッテリ用冷媒流路３は、バイパス流路５ａ，５ｂを介して連通され、空調用冷媒流路２とバッテリ用冷媒流路３との間で冷媒を循環可能なように構成されている。 [Configuration of battery temperature control device]
A battery temperature control device according to an embodiment of the present invention is mounted on an electric vehicle such as a hybrid vehicle or an electric vehicle. As shown in FIG. 1, a battery temperature control apparatus 1 according to an embodiment of the present invention includes an air conditioning refrigerant flow path 2 through which a refrigerant for air conditioning in a vehicle circulates, and a battery (BATT) 21 as a drive source for an electric vehicle. The battery refrigerant flow path 3 in which the refrigerant for adjusting the temperature of the battery circulates and the controller 4 for controlling the temperature of the battery 21 to a temperature suitable for charging (for example, 5 to 20 ° C.). The air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3 are communicated via the bypass flow paths 5a and 5b so that the refrigerant can be circulated between the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3. It is configured.

空調用冷媒流路２は、冷媒を加熱するためのＰＴＣ（Positive Temperature Coefficient）ヒータ１１と、冷媒を冷却するためのヒータコア１２と、空調用冷媒流路２内で冷媒を循環させる循環ポンプ１３を備える。バッテリ用冷媒流路３は、冷媒を冷却するためのラジエータ（ＲＡＤ）２２と、冷媒を加熱する強電系部品としてのＤＣ／ＤＣコンバータ（ＤＣ／ＤＣ）２３及び充電器（ＣＨＲ）２４と、バッテリ用冷媒流路３内で冷媒を循環させる循環ポンプ２５を備える。   The air conditioning refrigerant flow path 2 includes a PTC (Positive Temperature Coefficient) heater 11 for heating the refrigerant, a heater core 12 for cooling the refrigerant, and a circulation pump 13 for circulating the refrigerant in the air conditioning refrigerant flow path 2. Prepare. The battery refrigerant flow path 3 includes a radiator (RAD) 22 for cooling the refrigerant, a DC / DC converter (DC / DC) 23 and a charger (CHR) 24 as high-power components for heating the refrigerant, a battery A circulation pump 25 for circulating the refrigerant in the refrigerant flow path 3 is provided.

バッテリ用冷媒流路３は、バッテリ２１から放出された冷媒がラジエータ２２を通過しないようにバイパスさせるバイパス流路２６と、第１の設定温度（例えば５５℃）を閾値としてバッテリ用冷媒流路３とバイパス流路２７との間で冷媒流路を切り替えるサーモバルブ２７と、第１の設定温度より低い第２の設定温度（例えば５０℃）を閾値としてバッテリ用冷媒流路３とバイパス流路５ａとの間で冷媒流路を切り替えるサーモバルブ２８を備える。   The battery refrigerant flow path 3 includes a bypass flow path 26 that bypasses the refrigerant discharged from the battery 21 so as not to pass through the radiator 22, and the battery refrigerant flow path 3 with a first set temperature (for example, 55 ° C.) as a threshold value. And a bypass flow path 5a, and a battery coolant path 3 and a bypass flow path 5a with a second set temperature (for example, 50 ° C.) lower than the first set temperature as a threshold. And a thermo valve 28 for switching the refrigerant flow path between the two.

バッテリ用冷媒流路３は、バッテリ２１を通過しないように冷媒をバイパスさせるバイパス流路２９と、バッテリ用冷媒流路３とバイパス流路２９との間で冷媒流路を切り替える三方弁３０を備える。バッテリ用冷媒流路３は、バッテリ２１に冷媒を通過させる冷媒流路と並列にバイパス流路３１を備える。バイパス流路３１は、冷媒を冷却するための水冷式エバポレータ（Ｗ／ＥＶＡ）３２と、バッテリ２１と水冷式エバポレータ３１からなる冷媒流路内で冷媒を循環させる循環ポンプ３３を備える。   The battery refrigerant flow path 3 includes a bypass flow path 29 that bypasses the refrigerant so as not to pass the battery 21, and a three-way valve 30 that switches the refrigerant flow path between the battery refrigerant flow path 3 and the bypass flow path 29. . The battery refrigerant flow path 3 includes a bypass flow path 31 in parallel with the refrigerant flow path for allowing the battery 21 to pass the refrigerant. The bypass flow path 31 includes a water-cooled evaporator (W / EVA) 32 for cooling the refrigerant, and a circulation pump 33 that circulates the refrigerant in the refrigerant flow path including the battery 21 and the water-cooled evaporator 31.

コントローラ４は、電動車両の外気温を検出する外気温センサ４１と、バッテリ２１の温度を検出するバッテリ温度センサ４２と、バッテリ用冷媒流路３を流れる冷媒の温度を検出する強電水温センサ４３を備える。コントローラ４は、各センサからの出力に従って三方弁３０を制御して冷媒の流路を制御することにより、バッテリ２１の温度を充電に好適な温度に制御する。   The controller 4 includes an outside air temperature sensor 41 that detects the outside air temperature of the electric vehicle, a battery temperature sensor 42 that detects the temperature of the battery 21, and a strong electric water temperature sensor 43 that detects the temperature of the refrigerant flowing through the battery refrigerant flow path 3. Prepare. The controller 4 controls the temperature of the battery 21 to a temperature suitable for charging by controlling the three-way valve 30 according to the output from each sensor and controlling the flow path of the refrigerant.

このような構成を有するバッテリ温度制御装置１では、コントローラ４が以下に示すように動作することにより、バッテリ２１の温度を充電に好適な温度に制御する。以下、（１）バッテリ加温時と（２）バッテリ冷却時の動作に分けてコントローラ４の動作を詳しく説明する。なお以下では、充電に好適なバッテリ２１の温度を５〜２０℃として制御動作を説明する。   In the battery temperature control apparatus 1 having such a configuration, the controller 4 operates as follows to control the temperature of the battery 21 to a temperature suitable for charging. Hereinafter, the operation of the controller 4 will be described in detail by dividing it into (1) battery warming and (2) battery cooling operation. Hereinafter, the control operation will be described assuming that the temperature of the battery 21 suitable for charging is 5 to 20 ° C.

（１）バッテリ加温時
始めに、バッテリ２１の温度が充電に好適な温度より低いためにバッテリ２１を加熱する際のコントローラ４の動作を説明する。 (1) When the battery is warmed First, the operation of the controller 4 when heating the battery 21 because the temperature of the battery 21 is lower than the temperature suitable for charging will be described.

（１−１）極低温時
外気温センサ４１及びバッテリ温度センサ４２により外気温及びバッテリ温度が共に０℃以下であることが検出された場合、コントローラ４は、図２に実線で示すように、三方弁３０を制御することにより空調用冷媒流路２とバッテリ用冷媒流路３との間で冷媒を循環させる。具体的には、バッテリ用冷媒流路３内の冷媒は、ラジエータ２２を経由せずにＤＣ／ＤＣコンバータ２３及び充電器２４の排熱により加熱された後、バイパス流路５ａを介して空調用冷媒流路２に送られる。空調用冷媒流路２に送られた冷媒は、ヒータ１１により加熱された後、バイパス流路５ｂを介してバッテリ２１に送られる。すなわち極低温時には、冷媒はヒータ１１と強電系部品の排熱により加熱された後にバッテリ２１に送られ、バッテリ２１を加熱する。このような構成によれば、ヒータ１１を用いて冷媒を加熱するための消費電力を削減することができる。なお本実施形態では、ＤＣ／ＤＣコンバータ２３及び充電器２４の排熱により冷媒を加熱することとしたが、モータ等のその他の強電系部品の排熱により冷媒を加熱するようにしてもよい。 (1-1) Extremely Low Temperature When the outside air temperature sensor 41 and the battery temperature sensor 42 detect that the outside air temperature and the battery temperature are both 0 ° C. or less, the controller 4 is shown in FIG. By controlling the three-way valve 30, the refrigerant is circulated between the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3. Specifically, the refrigerant in the battery refrigerant flow path 3 is heated by the exhaust heat of the DC / DC converter 23 and the charger 24 without passing through the radiator 22, and is then used for air conditioning via the bypass flow path 5a. It is sent to the refrigerant flow path 2. The refrigerant sent to the air conditioning refrigerant flow path 2 is heated by the heater 11 and then sent to the battery 21 via the bypass flow path 5b. That is, at an extremely low temperature, the refrigerant is heated by exhaust heat from the heater 11 and the high-power components and then sent to the battery 21 to heat the battery 21. According to such a configuration, power consumption for heating the refrigerant using the heater 11 can be reduced. In the present embodiment, the refrigerant is heated by the exhaust heat of the DC / DC converter 23 and the charger 24. However, the refrigerant may be heated by the exhaust heat of other high-power components such as a motor.

（１−２）低温時
外気温センサ４１及びバッテリ温度センサ４２により外気温及びバッテリ温度がそれぞれ０℃以下及び０〜２０℃又は共に５℃以下であることが検出された場合、コントローラ４は、図３に実線で示すように、三方弁３０を制御することによりバッテリ用冷媒流路３内の冷媒のみがバッテリ２１に循環されるようにする。具体的には、バッテリ用冷媒流路３内の冷媒は、ラジエータ２２を経由せずにＤＣ／ＤＣコンバータ２３及び充電器２４の排熱により加熱された後、バッテリ２１に送られる。すなわち低温時には、バッテリ用冷媒流路３内の冷媒は強電系部品の排熱のみにより加熱された後にバッテリ２１に送られ、バッテリ２１を加熱する。一方、空調用冷媒流路２内の冷媒は、ヒータ１１及びヒータコア１２を循環し、空調用に適した温度範囲に温度が制御される。このような構成によれば、バッテリ用冷媒流路３内の冷媒は強電系部品の排熱のみを利用して加熱されるので、冷媒を加熱するための消費電力を削減することができる。 (1-2) Low Temperature When the outside air temperature sensor 41 and the battery temperature sensor 42 detect that the outside air temperature and the battery temperature are 0 ° C. or less and 0 to 20 ° C. or both 5 ° C. or less, the controller 4 As shown by a solid line in FIG. 3, only the refrigerant in the battery refrigerant flow path 3 is circulated to the battery 21 by controlling the three-way valve 30. Specifically, the refrigerant in the battery refrigerant flow path 3 is sent to the battery 21 after being heated by the exhaust heat of the DC / DC converter 23 and the charger 24 without passing through the radiator 22. That is, at a low temperature, the refrigerant in the battery refrigerant flow path 3 is heated only by the exhaust heat of the high-power components and then sent to the battery 21 to heat the battery 21. On the other hand, the refrigerant in the air conditioning refrigerant flow path 2 circulates through the heater 11 and the heater core 12, and the temperature is controlled to a temperature range suitable for air conditioning. According to such a configuration, since the refrigerant in the battery refrigerant flow path 3 is heated only using the exhaust heat of the high-power components, power consumption for heating the refrigerant can be reduced.

（１−３）通常時
外気温センサ４１及びバッテリ温度センサ４２により外気温及びバッテリ温度がそれぞれ０℃以上及び５℃以上であることが検出された場合、コントローラ４は、図４に実線で示すように、三方弁３０を制御することによりバッテリ２１に冷媒が流れないようにする。具体的には、バッテリ用冷媒流路３内の冷媒は、ラジエータ２２を経由せずにＤＣ／ＤＣコンバータ２３及び充電器２４を循環し、バッテリ２１の温度調整用に適した温度範囲に温度が制御される。一方、空調用冷媒流路２内の冷媒は、ヒータ１１及びヒータコア１２を循環し、空調用に適した温度範囲に温度が制御される。 (1-3) Normal time When the outside air temperature sensor 41 and the battery temperature sensor 42 detect that the outside air temperature and the battery temperature are 0 ° C. or more and 5 ° C. or more, respectively, the controller 4 is indicated by a solid line in FIG. As described above, the refrigerant is prevented from flowing into the battery 21 by controlling the three-way valve 30. Specifically, the refrigerant in the battery refrigerant flow path 3 circulates through the DC / DC converter 23 and the charger 24 without passing through the radiator 22, and the temperature is in a temperature range suitable for temperature adjustment of the battery 21. Be controlled. On the other hand, the refrigerant in the air conditioning refrigerant flow path 2 circulates through the heater 11 and the heater core 12, and the temperature is controlled to a temperature range suitable for air conditioning.

（２）バッテリ冷却時
次に、バッテリ２１の温度が充電に好適な温度より高いためにバッテリ２１を冷却する際のコントローラ４の動作を説明する。 (2) During Battery Cooling Next, the operation of the controller 4 when the battery 21 is cooled because the temperature of the battery 21 is higher than the temperature suitable for charging will be described.

（２−１）通常時
外気温センサ４１，バッテリ温度センサ４２，及び強電水温センサ４３により外気温，バッテリ温度，及びバッテリ用冷媒流路３内の冷媒の温度がそれぞれ５℃以下，５〜２０℃，及び５〜２０℃であることが検出された場合、コントローラ４は、（１−３）バッテリ加熱時の通常時と同様、三方弁３０を制御することによりバッテリ２１に冷媒が流れないようにする。 (2-1) Normal time The outside air temperature sensor 41, the battery temperature sensor 42, and the strong electric water temperature sensor 43 cause the outside air temperature, the battery temperature, and the temperature of the refrigerant in the battery refrigerant flow path 3 to be 5 ° C. or less, 5 to 20 respectively. When it is detected that the temperature is 5 ° C. and 5 ° C. to 20 ° C., the controller 4 controls the three-way valve 30 so that the refrigerant does not flow to the battery 21 as in (1-3) normal time during battery heating. To.

（２−２）中温時
外気温センサ４１，バッテリ温度センサ４２，及び強電水温センサ４３により外気温，バッテリ温度，及びバッテリ用冷媒流路３内の冷媒の温度がそれぞれ２０℃以下，５〜２０℃，及び５〜２０℃であることが検出された場合、コントローラ４は、図５に実線で示すように、三方弁３０を制御することによりバッテリ用冷媒流路３内の冷媒のみがバッテリ２１に流れるようにする。具体的には、バッテリ用冷媒流路３内の冷媒は、ラジエータ２２，ＤＣ／ＤＣコンバータ２３，及び充電器２４を経由してバッテリ２１に循環される。一方、空調用冷媒流路２内の冷媒は、ヒータ１１及びヒータコア１２を循環し、空調用に適した温度範囲に温度が制御される。 (2-2) Medium temperature When the outside air temperature sensor 41, the battery temperature sensor 42, and the strong electric water temperature sensor 43 are used, the outside air temperature, the battery temperature, and the temperature of the refrigerant in the battery refrigerant flow path 3 are respectively 20 ° C. or less, 5 to 20 When it is detected that the temperature is 5 ° C. and 5 to 20 ° C., the controller 4 controls the three-way valve 30 so that only the refrigerant in the battery refrigerant flow path 3 is charged to the battery 21 as shown by the solid line in FIG. To flow into. Specifically, the refrigerant in the battery refrigerant flow path 3 is circulated to the battery 21 via the radiator 22, the DC / DC converter 23, and the charger 24. On the other hand, the refrigerant in the air conditioning refrigerant flow path 2 circulates through the heater 11 and the heater core 12, and the temperature is controlled to a temperature range suitable for air conditioning.

（２−３）高温時（１）
外気温センサ４１，バッテリ温度センサ４２，及び強電水温センサ４３により外気温，バッテリ温度，及びバッテリ用冷媒流路３内の冷媒の温度がそれぞれ２０℃以上，２０℃以上，及び２０〜５０℃であることが検出された場合、コントローラ４は、図６に実線で示すように、三方弁３０を制御することにより水冷式エバポレータ３２により冷却された冷媒がバッテリ２１に流れるようにする。具体的には、バッテリ用冷媒流路３内の冷媒は、ラジエータ２２を経由せずにＤＣ／ＤＣコンバータ２３及び充電器２４を循環する。またバッテリ２１には、循環ポンプ３３を駆動させることにより水冷式エバポレータ３２により冷却された冷媒が循環される。このような構成によれば、バッテリ２１とＤＣ／ＤＣコンバータ２３及び充電器２４とを個別に適温に制御することができる。一方、空調用冷媒流路２内の冷媒は、ヒータ１１及びヒータコア１２を循環し、空調用に適した温度範囲に温度が制御される。 (2-3) High temperature (1)
The outside air temperature sensor 41, the battery temperature sensor 42, and the strong electric water temperature sensor 43 are used to set the outside air temperature, the battery temperature, and the temperature of the refrigerant in the battery refrigerant flow path 3 to 20 ° C., 20 ° C., and 20-50 ° C., respectively. When it is detected, the controller 4 controls the three-way valve 30 so that the refrigerant cooled by the water-cooled evaporator 32 flows to the battery 21 as indicated by the solid line in FIG. Specifically, the refrigerant in the battery refrigerant flow path 3 circulates through the DC / DC converter 23 and the charger 24 without passing through the radiator 22. Further, the refrigerant cooled by the water-cooled evaporator 32 is circulated in the battery 21 by driving the circulation pump 33. According to such a configuration, the battery 21, the DC / DC converter 23, and the charger 24 can be individually controlled at appropriate temperatures. On the other hand, the refrigerant in the air conditioning refrigerant flow path 2 circulates through the heater 11 and the heater core 12, and the temperature is controlled to a temperature range suitable for air conditioning.

（２−４）高温時（２）
外気温センサ４１，バッテリ温度センサ４２，及び強電水温センサ４３により外気温，バッテリ温度，及びバッテリ用冷媒流路３内の冷媒の温度がそれぞれ２０℃以上，２０℃以上，及び５０℃以上であることが検出された場合、コントローラ４は、図７に実線で示すように、三方弁３０を制御することにより水冷式エバポレータ３２により冷却された冷媒がバッテリ２１に流れるようにする。具体的には、バッテリ用冷媒流路３内の冷媒は、（２−３）高温時（１）と比較して温度が高いので、ラジエータ２２を経由せずにＤＣ／ＤＣコンバータ２３及び充電器２４と空調用冷媒流路２を循環する。またバッテリ２１には、循環ポンプ３３を駆動させることにより水冷式エバポレータ３２により冷却された冷媒が循環される。このような構成によれば、バッテリ２１とＤＣ／ＤＣコンバータ２３及び充電器２４とを個別に適温に制御することができる。 (2-4) High temperature (2)
The outside air temperature sensor 41, the battery temperature sensor 42, and the strong electric water temperature sensor 43 cause the outside air temperature, the battery temperature, and the temperature of the refrigerant in the battery refrigerant flow path 3 to be 20 ° C. or higher, 20 ° C. or higher, and 50 ° C. or higher, respectively. When this is detected, the controller 4 controls the three-way valve 30 so that the refrigerant cooled by the water-cooled evaporator 32 flows to the battery 21 as shown by a solid line in FIG. Specifically, since the refrigerant in the battery refrigerant flow path 3 is higher in temperature than (2-3) high temperature (1), the DC / DC converter 23 and the charger are not passed through the radiator 22. 24 and the refrigerant flow path 2 for air conditioning are circulated. Further, the refrigerant cooled by the water-cooled evaporator 32 is circulated in the battery 21 by driving the circulation pump 33. According to such a configuration, the battery 21, the DC / DC converter 23, and the charger 24 can be individually controlled at appropriate temperatures.

（その他の動作）
空調用冷媒流路２内の冷媒の温度制御範囲とバッテリ用冷媒流路３内の冷媒の温度制御範囲は異なる。このため、空調用冷媒流路２とバッテリ用冷媒流路３とを接続した際、空調用冷媒流路２内の冷媒とバッテリ用冷媒流路３内の冷媒間に温度差が存在し、バッテリ２１の温度を充電に好適な温度に速やかに制御することが困難になる。そこで空調用冷媒流路２とバッテリ用冷媒流路３とを接続する際には、図４に示すようにして空調用冷媒流路２内の冷媒の温度とバッテリ用冷媒流路３内の冷媒の温度を個別に調整した後に、図７に示すように空調用冷媒流路２とバッテリ用冷媒流路３を接続することが望ましい。このような制御方法によれば、空調用冷媒流路２内の冷媒とバッテリ用冷媒流路３内の冷媒間の温度差が小さくなるので、バッテリ２１の温度を充電に好適な温度に速やかに制御できる。 (Other operations)
The temperature control range of the refrigerant in the air conditioning refrigerant flow path 2 and the temperature control range of the refrigerant in the battery refrigerant flow path 3 are different. For this reason, when the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3 are connected, there is a temperature difference between the refrigerant in the air conditioning refrigerant flow path 2 and the refrigerant in the battery refrigerant flow path 3. It becomes difficult to quickly control the temperature of 21 to a temperature suitable for charging. Therefore, when connecting the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3, the temperature of the refrigerant in the air conditioning refrigerant flow path 2 and the refrigerant in the battery refrigerant flow path 3 as shown in FIG. It is desirable to connect the air conditioning refrigerant passage 2 and the battery refrigerant passage 3 as shown in FIG. According to such a control method, the temperature difference between the refrigerant in the air conditioning refrigerant flow path 2 and the refrigerant in the battery refrigerant flow path 3 is reduced, so that the temperature of the battery 21 can be quickly adjusted to a temperature suitable for charging. Can be controlled.

以上の説明から明らかなように、本発明の実施形態となるバッテリ温度制御装置１によれば、バッテリ用冷媒流路３に強電系部品であるＤＣ／ＤＣコンバータ２３と充電器２４が配置され、ＤＣ／ＤＣコンバータ２３と充電器２４からの排熱を利用してバッテリ２１に供給される冷媒を加熱するので、バッテリ２１の加温に要する電力量を削減することができる。   As is clear from the above description, according to the battery temperature control device 1 according to the embodiment of the present invention, the DC / DC converter 23 and the charger 24 that are high-power components are arranged in the battery refrigerant flow path 3. Since the refrigerant supplied to the battery 21 is heated using the exhaust heat from the DC / DC converter 23 and the charger 24, the amount of power required for heating the battery 21 can be reduced.

本発明の実施形態となるバッテリ温度制御装置１によれば、バッテリ用冷媒流路３は、バッテリ２１を経由せずに冷媒を流すバイパス流路３１を備えるので、温度制御範囲が異なるバッテリ２１とＤＣ／ＤＣコンバータ２３及び充電器２４とを個別に温度制御することができる。   According to the battery temperature control device 1 according to the embodiment of the present invention, the battery refrigerant flow path 3 includes the bypass flow path 31 that allows the refrigerant to flow without going through the battery 21. The DC / DC converter 23 and the charger 24 can be individually temperature controlled.

本発明の実施形態となるバッテリ温度制御装置１によれば、バイパス流路３１には、バッテリ２１を冷却するための水冷式エバポレータ３２が設けられているので、温度制御範囲が異なるバッテリ２１とＤＣ／ＤＣコンバータ２３及び充電器２４とを個別に冷却することができる。   According to the battery temperature control device 1 according to the embodiment of the present invention, since the water-cooled evaporator 32 for cooling the battery 21 is provided in the bypass flow path 31, the battery 21 and the DC having different temperature control ranges are provided. / DC converter 23 and charger 24 can be cooled separately.

本発明の実施形態となるバッテリ温度制御装置１によれば、空調用冷媒流路２とバッテリ用冷媒流路３とを接続する際、空調用冷媒流路２内の冷媒の温度とバッテリ用冷媒流路３内の冷媒の温度を個別に調整した後に空調用冷媒流路２とバッテリ用冷媒流路３を接続するので、バッテリ２１の温度を充電に好適な温度に速やかに制御できる。   According to the battery temperature control device 1 according to the embodiment of the present invention, when the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3 are connected, the temperature of the refrigerant in the air conditioning refrigerant flow path 2 and the battery refrigerant. Since the air conditioning refrigerant flow path 2 and the battery refrigerant flow path 3 are connected after individually adjusting the temperature of the refrigerant in the flow path 3, the temperature of the battery 21 can be quickly controlled to a temperature suitable for charging.

以上、本発明者らによってなされた発明を適用した実施の形態について説明したが、本実施形態による本発明の開示の一部をなす記述及び図面により本発明は限定されることはない。すなわち本実施形態に基づいて当業者等によりなされる他の実施の形態、実施例及び運用技術等は全て本発明の範疇に含まれることは勿論である。   The embodiment to which the invention made by the present inventors is applied has been described above, but the present invention is not limited by the description and the drawings that constitute a part of the disclosure of the present invention. That is, it is needless to say that other embodiments, examples, operational techniques, and the like made by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

１：バッテリ温度制御装置
２：空調用冷媒流路
３：バッテリ用冷媒流路
４：コントローラ
５ａ，５ｂ，２６，２９，３１：バイパス流路
１１：ＰＴＣ（Positive Temperature Coefficient）ヒータ
１２：ヒータコア
１３，２５，３１：循環ポンプ
２１：バッテリ
２２：ラジエータ
２３：ＤＣ／ＤＣコンバータ
２４：充電器
２７，２８：サーモバルブ
３２：水冷式エバポレータ
４１：外気温センサ
４２：バッテリ温度センサ
４３：強電水温センサ 1: Battery temperature control device 2: Air conditioning refrigerant flow path 3: Battery refrigerant flow path 4: Controllers 5a, 5b, 26, 29, 31: Bypass flow path 11: PTC (Positive Temperature Coefficient) heater 12: Heater core 13, 25, 31: Circulation pump 21: Battery 22: Radiator 23: DC / DC converter 24: Charger 27, 28: Thermo valve 32: Water-cooled evaporator 41: Outside air temperature sensor 42: Battery temperature sensor 43: Strong electric water temperature sensor

Claims (2)

車室内空調用の冷媒が循環する空調用冷媒流路と、
車両に搭載されたバッテリの温度を調整する冷媒が循環するバッテリ用冷媒流路と、
前記空調用冷媒流路と前記バッテリ用冷媒流路間で冷媒を循環させるバイパス流路と、
前記バイパス流路を開閉する開閉手段と、
前記バッテリの温度を検出するバッテリ温度検出手段と、
前記バッテリ温度検出手段により検出された前記バッテリの温度に応じて前記開閉手段を開閉することにより当該バッテリの温度を制御する制御手段とを備え、
前記バッテリ用冷媒流路は、強電系部品の排熱により流路内の冷媒を加熱する加熱手段と、前記バッテリを迂回して冷媒を循環させるバイパス流路を有すること
を特徴とするバッテリ温度制御装置。 An air-conditioning refrigerant flow path through which a refrigerant for air-conditioning the vehicle interior circulates;
A refrigerant flow path for a battery through which a refrigerant for adjusting a temperature of a battery mounted on the vehicle circulates;
A bypass passage for circulating a refrigerant between the air conditioning refrigerant passage and the battery refrigerant passage;
Opening and closing means for opening and closing the bypass channel;
Battery temperature detecting means for detecting the temperature of the battery;
Control means for controlling the temperature of the battery by opening and closing the opening and closing means according to the temperature of the battery detected by the battery temperature detection means,
The battery refrigerant flow path has heating means for heating the refrigerant in the flow path by exhaust heat of the high-power system parts, and a bypass flow path for bypassing the battery and circulating the refrigerant. apparatus. 請求項１に記載のバッテリ温度制御装置において、
前記バイパス流路に前記冷媒を冷却するための水冷式エバポレータが設けられていることを特徴とするバッテリ温度制御装置。 The battery temperature control device according to claim 1,
A battery temperature control device, wherein a water-cooled evaporator for cooling the refrigerant is provided in the bypass channel.
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