JP2001197788A - Air conditioning system for automobile - Google Patents

Air conditioning system for automobile

Info

Publication number
JP2001197788A
JP2001197788A JP31604499A JP31604499A JP2001197788A JP 2001197788 A JP2001197788 A JP 2001197788A JP 31604499 A JP31604499 A JP 31604499A JP 31604499 A JP31604499 A JP 31604499A JP 2001197788 A JP2001197788 A JP 2001197788A
Authority
JP
Japan
Prior art keywords
voltage
battery
power
engine
air conditioner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP31604499A
Other languages
Japanese (ja)
Inventor
Masaru Miyazaki
勝 宮崎
Koichi Kimura
幸市 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP31604499A priority Critical patent/JP2001197788A/en
Publication of JP2001197788A publication Critical patent/JP2001197788A/en
Pending legal-status Critical Current

Links

Landscapes

  • Air-Conditioning For Vehicles (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system for an automobile, capable of rapidly rotating a motor operated compressor even at low speed rotation of an engine. SOLUTION: The air conditioning system for the automobile comprises a rectifier for rectifying an AC output of a generator driven by the engine to obtain DC power, a DC voltage detector for detecting the voltage of a DC power line, a reversible chopper arranged parallel to the line and a battery changing and discharging, and an inverter for converting the DC power into an AC power having a predetermined frequency and voltage. The chopper charges the battery as a step-down chopper when the DC voltage detector detects the voltage in a predetermined range, and discharges the battery as a step-up chopper when the DC voltage detector detects the voltage in a predetermined range or lower. The battery is used as an auxiliary energy source when the rotating speed of the engine is abruptly decelerated or when the speed of the engine is low.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、全電気式自動車
用空調装置に関し、特にエンジンが低回転のときも充分
な冷却能力を発揮できる空調装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for an all-electric vehicle, and more particularly to an air conditioner capable of exhibiting a sufficient cooling capacity even when an engine is running at a low speed.

【0002】[0002]

【従来の技術】従来、エンジンの出力軸で駆動される発
電機の発生電力によって動作する全電気式自動車用空調
装置は、図3に示すように発電機2の出力を整流器3に
よって直流に変換し、インバータ5によって所定の周波
数、電圧の交流に変換して電動圧縮機6が要求する電力
を供給していた。
2. Description of the Related Art Conventionally, an all-electric vehicle air conditioner which operates by the power generated by a generator driven by an output shaft of an engine converts an output of a generator 2 into a direct current by a rectifier 3 as shown in FIG. The inverter 5 converts the voltage into alternating current of a predetermined frequency and voltage to supply the electric power required by the electric compressor 6.

【0003】[0003]

【発明が解決しようとする課題】ところが上述の方法で
は、エンジンの回転数が低下し、発電機の発電容量が小
さくなったときに電動圧縮機が高速運転を行うと、発電
機が過負荷になるという課題があった。
However, in the above-mentioned method, if the electric compressor operates at a high speed when the engine speed decreases and the power generation capacity of the generator decreases, the generator becomes overloaded. There was a problem of becoming.

【0004】本発明はこのような背景の下になされたも
ので、直流ラインに可逆チョッパ装置とバッテリを配設
することによってエンジンの低速回転時でも電動圧縮機
の高速回転を可能とした自動車用空調装置を提供するこ
とを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of such a background, and is provided with a reversible chopper device and a battery in a DC line so that an electric compressor can be rotated at a high speed even at a low engine speed. It is intended to provide an air conditioner.

【0005】[0005]

【課題を解決するための手段】請求項1に記載の発明
は、エンジンの出力軸で駆動される発電機の発生電力で
動作する空調装置であって、前記発電機の交流出力を整
流して直流電力を得る整流器と、該直流電力ラインの電
圧を検出する直流電圧検出部と、前記直流電力ラインに
並列に配設された可逆チョッパ装置と、該可逆チョッパ
装置の出力側に接続され、該可逆チョッパ装置の制御に
よって充放電を行うバッテリと、前記直流電力を所定の
周波数及び電圧の交流電力に変換するインバータと、該
インバータの出力によって駆動される電動圧縮機と、を
具備することを特徴とする自動車用空調装置を提供す
る。
According to the present invention, there is provided an air conditioner which operates on the power generated by a generator driven by an output shaft of an engine, wherein the AC output of the generator is rectified. A rectifier for obtaining DC power, a DC voltage detection unit for detecting a voltage of the DC power line, a reversible chopper device arranged in parallel with the DC power line, and an output side of the reversible chopper device, A battery that performs charging and discharging under the control of the reversible chopper device, an inverter that converts the DC power into AC power having a predetermined frequency and voltage, and an electric compressor driven by an output of the inverter. And a vehicle air conditioner.

【0006】請求項2に記載の発明は、請求項1に記載
の自動車用空調装置において、前記可逆チョッパ装置
は、前記直流電圧検出部が所定範囲以上の電圧を検出し
たとき、降圧チョッパとして前記バッテリを充電する動
作を行い、前記可逆チョッパ装置は、前記直流電圧検出
部が所定範囲以下の電圧を検出したとき、昇圧チョッパ
として前記バッテリを放電させる動作を行うことを特徴
とする。
According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the reversible chopper device is configured as a step-down chopper when the DC voltage detector detects a voltage higher than a predetermined range. The reversible chopper device performs an operation of charging a battery, and performs an operation of discharging the battery as a boost chopper when the DC voltage detection unit detects a voltage that is equal to or less than a predetermined range.

【0007】請求項3に記載の発明は、請求項1または
2に記載の自動車用空調装置において、前記バッテリ
は、前記エンジンの回転速度が急激に低下したときの補
助エネルギ源として使用されることを特徴とする。
According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the battery is used as an auxiliary energy source when the rotational speed of the engine suddenly decreases. It is characterized by.

【0008】請求項4に記載の発明は、請求項1または
2に記載の自動車用空調装置において、前記バッテリ
は、前記エンジンの回転速度が低回転速度のときの補助
エネルギ源として使用されることを特徴とする。
According to a fourth aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the battery is used as an auxiliary energy source when the rotation speed of the engine is low. It is characterized by.

【0009】[0009]

【発明の実施の形態】以下、この発明の一実施形態につ
いて図を参照しながら説明する。図1はこの発明の一実
施形態による自動車用空調装置の構成を示すブロック図
である。この図において、符号1は自動車のエンジンで
あり、走行のための動力源であるとともに、エアコン用
の発電機2も駆動する。発電機2の交流出力を整流器3
で直流化し、インバータ5によって所定周波数及び電圧
の交流電力に変換して電動圧縮機6を駆動する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an automotive air conditioner according to one embodiment of the present invention. In this figure, reference numeral 1 denotes an automobile engine, which is a power source for traveling and also drives a generator 2 for an air conditioner. Rectifier 3 converts AC output of generator 2
, And is converted into AC power of a predetermined frequency and voltage by the inverter 5 to drive the electric compressor 6.

【0010】さらに、整流器3によって直流化されたラ
インに並列に可逆チョッパ装置7を配設し、この可逆チ
ョッパ装置7の出力側にバッテリ8を接続する。可逆チ
ョッパ装置7は、バッテリ8の充電または放電の切り替
えと、充電量または放電量の制御を行う。直流電圧検出
部9は直流ラインの電圧を検出し、検出結果によって可
逆チョッパ装置7を制御してバッテリ8の充電または放
電の制御を行う。
Further, a reversible chopper device 7 is arranged in parallel with the line converted into a direct current by the rectifier 3, and a battery 8 is connected to the output side of the reversible chopper device 7. The reversible chopper device 7 switches between charging and discharging of the battery 8 and controls the amount of charge or discharge. The DC voltage detector 9 detects the voltage of the DC line, controls the reversible chopper device 7 based on the detection result, and controls charging or discharging of the battery 8.

【0011】このような構成による自動車用空調装置の
動作を図1及び可逆チョッパ装置7の内部回路を示した
図2を参照して説明する。まず、エンジン1の回転が高
速のときは、発電機2の発電電圧が高く、出力可能電力
も大きい。従って、整流器3の出力側の直流電圧も高く
なる。このときは、直流電力をインバータ5によって所
定の周波数及び電圧に変換した交流電力によって電動圧
縮機6が要求する電力を供給する。
The operation of the air conditioner for a vehicle having such a configuration will be described with reference to FIG. 1 and FIG. 2 showing the internal circuit of the reversible chopper device 7. First, when the rotation of the engine 1 is at high speed, the generated voltage of the generator 2 is high, and the outputable power is also large. Therefore, the DC voltage on the output side of the rectifier 3 also increases. At this time, the power required by the electric compressor 6 is supplied by the AC power obtained by converting the DC power into a predetermined frequency and voltage by the inverter 5.

【0012】直流ラインの電圧が高く、かつバッテリ8
が満充電でないときは、直流電圧検出部9の検出電圧に
よってバッテリ8の充電が可能なことを検出して可逆チ
ョッパ装置7のトランジスタ11をスイッチングし、リ
アクタ15を介してバッテリ8を充電する。充電電流の
値はトランジスタ11のON期間をコントロールするこ
とによって制御され、可逆チョッパ装置7は降圧チョッ
パとして動作する。
If the DC line voltage is high and the battery 8
Is not fully charged, it detects that the battery 8 can be charged by the detection voltage of the DC voltage detection unit 9, switches the transistor 11 of the reversible chopper device 7, and charges the battery 8 via the reactor 15. The value of the charging current is controlled by controlling the ON period of the transistor 11, and the reversible chopper device 7 operates as a step-down chopper.

【0013】つぎに、エンジン1の回転が低速になり、
直流電圧が規定範囲以下の電圧値になったときは、可逆
チョッパ装置7によってバッテリ8に充電された電力を
昇圧して放電して直流ラインに供給し、インバータ5の
入力電力とする。このときの動作は、トランジスタ12
のスイッチングによって行われ、トランジスタ12をO
Nさせることによってバッテリ8の電流はリアクタ15
及びトランジスタ12を介して放電し、このときエネル
ギがリアクタ15に蓄積される。トランジスタ12をO
FFさせると、リアクタ15には逆起電力による電圧が
発生し、バッテリ8の電圧とリアクタ15の逆起電力に
よる電圧が加算されてダイオード13を介して直流ライ
ンに加わり、昇圧チョッパの動作を行う。
Next, the rotation of the engine 1 becomes slow,
When the DC voltage falls below the specified range, the power charged in the battery 8 by the reversible chopper device 7 is boosted and discharged and supplied to the DC line, which is used as the input power of the inverter 5. The operation at this time is as follows.
And the transistor 12 is turned on
N, the current of the battery 8 is
And discharge through the transistor 12, at which time energy is stored in the reactor 15. Transistor 12 is set to O
When the FF is performed, a voltage due to the back electromotive force is generated in the reactor 15, and the voltage of the battery 8 and the voltage due to the back electromotive force of the reactor 15 are added and applied to the DC line via the diode 13, thereby performing the operation of the boost chopper. .

【0014】トランジスタ11及び12としては、IG
BT等が好適に用いられる。上述のように可逆チョッパ
装置を直流ラインとバッテリとの間に介在させることに
よって直流ラインの電圧とバッテリの電圧が異なる場合
もバッテリへの充電及び放電をさせることができる。
As transistors 11 and 12, IG
BT or the like is preferably used. By interposing the reversible chopper device between the DC line and the battery as described above, the battery can be charged and discharged even when the DC line voltage and the battery voltage are different.

【0015】以上、本発明の一実施形態の動作を図面を
参照して詳述してきたが、本発明はこの実施形態に限ら
れるものではなく、本発明の要旨を逸脱しない範囲の設
計変更等があっても本発明に含まれる。例えば、上述の
実施形態では発電機及び整流器は無制御として説明した
が、それぞれ電圧制御を行う発電機及び整流器としても
よい。
The operation of one embodiment of the present invention has been described above in detail with reference to the drawings. However, the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. The present invention is also included in the present invention. For example, in the above embodiment, the generator and the rectifier have been described as being uncontrolled, but may be a generator and a rectifier that perform voltage control, respectively.

【0016】[0016]

【発明の効果】これまでに説明したように、この発明に
よれば、発電電力が大きいときはバッテリの充電を行
い、発電電力が小さいときはバッテリの放電電力で補う
ことによって電動圧縮機に入力する電力を制御するよう
にしたので、小型の発電機を使用することができるとい
う効果が得られる。また、エンジン回転数が急激に低下
した場合にもバッテリから電力が補充されるため、充分
な出力で電動圧縮機を動作させることができ、社内の快
適性を維持することができるという効果が得られる。
As described above, according to the present invention, when the generated power is large, the battery is charged, and when the generated power is small, the battery is supplemented with the discharged power to input to the electric compressor. Since the power to be generated is controlled, an effect that a small generator can be used can be obtained. In addition, even when the engine speed suddenly drops, electric power is replenished from the battery, so that the electric compressor can be operated with a sufficient output, and the effect that the comfort in the company can be maintained can be obtained. Can be

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の一実施形態による自動車用空調装置
の構成を示すブロック図。
FIG. 1 is a block diagram showing a configuration of an automotive air conditioner according to an embodiment of the present invention.

【図2】 図1の可逆チョッパ装置の構成を示す回路
図。
FIG. 2 is a circuit diagram showing a configuration of the reversible chopper device of FIG.

【図3】 従来の技術による動車用空調装置の構成を示
すブロック図。
FIG. 3 is a block diagram showing a configuration of a vehicle air conditioner according to a conventional technique.

【符号の説明】[Explanation of symbols]

1…エンジン 2…発電機 3…整流器 4…平滑コンデンサ 5…インバータ 6…電動圧縮機 7…可逆チョッパ装置 8…バッテリ 9…直流電圧検出部 11、12…トランジスタ 13、14…ダイオード 15…リアクタ DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Generator 3 ... Rectifier 4 ... Smoothing capacitor 5 ... Inverter 6 ... Electric compressor 7 ... Reversible chopper device 8 ... Battery 9 ... DC voltage detection part 11, 12 ... Transistor 13, 14 ... Diode 15 ... Reactor

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 5H590 AA03 CA07 CA23 CC01 CD01 CD03 CD10 CE05 CE10 EA07 EB02 EB07 FA08 FC12 FC23 FC26 GA02 GA09 HA02  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H590 AA03 CA07 CA23 CC01 CD01 CD03 CD10 CE05 CE10 EA07 EB02 EB07 FA08 FC12 FC23 FC26 GA02 GA09 HA02

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 エンジンの出力軸で駆動される発電機
の発生電力で動作する空調装置であって、 前記発電機の交流出力を整流して直流電力を得る整流器
と、 該直流電力ラインの電圧を検出する直流電圧検出部と、 前記直流電力ラインに並列に配設された可逆チョッパ装
置と、 該可逆チョッパ装置の出力側に接続され、該可逆チョッ
パ装置の制御によって充放電を行うバッテリと、 前記直流電力を所定の周波数及び電圧の交流電力に変換
するインバータと、 該インバータの出力によって駆動される電動圧縮機と、
を具備することを特徴とする自動車用空調装置。
1. An air conditioner that operates on power generated by a generator driven by an output shaft of an engine, comprising: a rectifier that rectifies an AC output of the generator to obtain DC power; and a voltage of the DC power line. A reversible chopper device disposed in parallel with the DC power line, a battery connected to the output side of the reversible chopper device, and performing charging and discharging under the control of the reversible chopper device. An inverter that converts the DC power into AC power having a predetermined frequency and voltage; an electric compressor driven by an output of the inverter;
An air conditioner for a vehicle, comprising:
【請求項2】 前記可逆チョッパ装置は、 前記直流電圧検出部が所定範囲以上の電圧を検出したと
き、降圧チョッパとして前記バッテリを充電する動作を
行い、 前記直流電圧検出部が所定範囲以下の電圧を検出したと
き、昇圧チョッパとして前記バッテリを放電させる動作
を行うことを特徴とする請求項1に記載の自動車用空調
装置。
2. The reversible chopper device performs an operation of charging the battery as a step-down chopper when the DC voltage detector detects a voltage higher than a predetermined range. The vehicle air conditioner according to claim 1, wherein when detecting a condition, an operation of discharging the battery is performed as a step-up chopper.
【請求項3】 前記バッテリは、 前記エンジンの回転速度が急激に低下したときの補助エ
ネルギ源として使用されることを特徴とする請求項1ま
たは2に記載の自動車用空調装置。
3. The vehicle air conditioner according to claim 1, wherein the battery is used as an auxiliary energy source when the rotation speed of the engine suddenly decreases.
【請求項4】 前記バッテリは、 前記エンジンの回転速度が低回転速度のときの補助エネ
ルギ源として使用されることを特徴とする請求項1また
は2に記載の自動車用空調装置。
4. The vehicle air conditioner according to claim 1, wherein the battery is used as an auxiliary energy source when the rotation speed of the engine is low.
JP31604499A 1999-11-05 1999-11-05 Air conditioning system for automobile Pending JP2001197788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31604499A JP2001197788A (en) 1999-11-05 1999-11-05 Air conditioning system for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31604499A JP2001197788A (en) 1999-11-05 1999-11-05 Air conditioning system for automobile

Publications (1)

Publication Number Publication Date
JP2001197788A true JP2001197788A (en) 2001-07-19

Family

ID=18072650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31604499A Pending JP2001197788A (en) 1999-11-05 1999-11-05 Air conditioning system for automobile

Country Status (1)

Country Link
JP (1) JP2001197788A (en)

Cited By (12)

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CN1309590C (en) * 2004-12-29 2007-04-11 郭义 Electric automobile energy driving device
CN1886282B (en) * 2003-11-25 2012-01-11 通用电气公司 Method and apparatus for producing traction effort
CN102514464A (en) * 2011-12-21 2012-06-27 珠海银通新动力科技有限公司 Motor-driven air conditioning system for automobile
CN102678302A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Electric generator unit of air conditioner for automobile
CN102678317A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Automotive engine
CN102678294A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Generator set for electric compressor of automotive air conditioner
CN102678301A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Electric generator unit of air conditioner for automobile
CN102678299A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Electric generator unit of air conditioner for automobile
CN102678315A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Automobile engine
KR101220938B1 (en) 2011-10-13 2013-01-11 삼성탈레스 주식회사 Bi-directional uninterruptible power generate system for vehicle
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1886282B (en) * 2003-11-25 2012-01-11 通用电气公司 Method and apparatus for producing traction effort
WO2006028422A1 (en) * 2004-09-10 2006-03-16 Iskra Avtoelektrika D.D. Device for generating direct and alternating currents for mobile units
CN1309590C (en) * 2004-12-29 2007-04-11 郭义 Electric automobile energy driving device
CN102678302A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Electric generator unit of air conditioner for automobile
CN102678317A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Automotive engine
CN102678294A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Generator set for electric compressor of automotive air conditioner
CN102678301A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Electric generator unit of air conditioner for automobile
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