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JP5804322B2 - Battery disconnect circuit - Google Patents

Battery disconnect circuit Download PDF

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Publication number
JP5804322B2
JP5804322B2 JP2011261801A JP2011261801A JP5804322B2 JP 5804322 B2 JP5804322 B2 JP 5804322B2 JP 2011261801 A JP2011261801 A JP 2011261801A JP 2011261801 A JP2011261801 A JP 2011261801A JP 5804322 B2 JP5804322 B2 JP 5804322B2
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battery
voltage
contact
relay
circuit
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JP2013115979A (en
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佐藤　哲也
哲也 佐藤
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Sanken Electric Co Ltd
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    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Description

本発明は、装置等のバッテリへの接続を切り離すバッテリ切り離し回路に関する。   The present invention relates to a battery disconnection circuit for disconnecting connection to a battery of an apparatus or the like.

図２に従来のバッテリ切り離し回路の一例を示す。図２において、バッテリ切り離し回路１０は、バッテリＢＡＴＴと入力用コンデンサＣとの間に設けられている。また、入力用コンデンサＣには、並列に、バッテリ接続検出回路２及び電力変換回路（図示せず）が接続されている。   FIG. 2 shows an example of a conventional battery disconnection circuit. In FIG. 2, the battery disconnection circuit 10 is provided between the battery BATT and the input capacitor C. In addition, a battery connection detection circuit 2 and a power conversion circuit (not shown) are connected to the input capacitor C in parallel.

バッテリ接続検出回路２は、入力用コンデンサＣの端子間電圧を検出して、入力用コンデンサＣがバッテリＢＡＴＴに接続されているか否かを判定し、判定信号（図示せず）を電力変換回路に出力する。   The battery connection detection circuit 2 detects the voltage between the terminals of the input capacitor C, determines whether or not the input capacitor C is connected to the battery BATT, and sends a determination signal (not shown) to the power conversion circuit. Output.

電力変換回路は、入力側を入力用コンデンサＣに接続し、出力側に接続される負荷（図示せず）に所望の電力を供給する。   The power conversion circuit connects the input side to the input capacitor C and supplies desired power to a load (not shown) connected to the output side.

バッテリ切り離し回路１０は、リレーＲＹ１，ＲＹ２及び抵抗Ｒを備え、電力変換回路からの切替信号（図示せず）に応じて、リレーＲＹ１，ＲＹ２が動作し、バッテリＢＡＴＴと入力用コンデンサＣとを接続するか切り離すかを行う。   The battery disconnection circuit 10 includes relays RY1 and RY2 and a resistor R. The relays RY1 and RY2 operate in response to a switching signal (not shown) from the power conversion circuit, and connect the battery BATT and the input capacitor C. To do or to detach.

リレーＲＹ１，ＲＹ２は、それぞれに、コイル（図示せず）と、二つの固定接点（ａ接点，ｂ接点）及び一つの可動接点（ｃ接点）とを有し、切替信号に応じてコイルに電流が流れるとａ接点とｃ接点とが接続され、ｂ接点とｃ接点とが切り離される。また、切替信号に応じてコイルに電流が流れなくなるとｂ接点とｃ接点とが接続され、ａ接点とｃ接点とが切り離される。   Each of the relays RY1 and RY2 has a coil (not shown), two fixed contacts (a contact, b contact), and one movable contact (c contact). Flows, the a contact and the c contact are connected, and the b contact and the c contact are disconnected. When no current flows through the coil in response to the switching signal, the b contact and the c contact are connected, and the a contact and the c contact are disconnected.

抵抗Ｒは、入力用コンデンサＣの電荷を放電させるコンデンサ放電用抵抗である。   The resistor R is a capacitor discharging resistor that discharges the electric charge of the input capacitor C.

次に、従来のバッテリ切り離し回路の作用を説明する。電力変換回路が動作している状態で電力変換回路からバッテリ切り離し回路１０に出力される切替信号は、例えば、Ｈレベルの信号であって、バッテリＢＡＴＴと入力用コンデンサＣとを接続させるための信号である。また、電力変換回路が動作を停止している状態で電力変換回路からバッテリ切り離し回路１０に出力される切替信号は、例えば、Ｌレベルの信号であって、バッテリＢＡＴＴと入力用コンデンサＣとを切り離させるための信号である。   Next, the operation of the conventional battery disconnection circuit will be described. The switching signal output from the power conversion circuit to the battery disconnection circuit 10 in a state where the power conversion circuit is operating is, for example, an H level signal, and a signal for connecting the battery BATT and the input capacitor C. It is. The switching signal output from the power conversion circuit to the battery disconnection circuit 10 in a state where the operation of the power conversion circuit is stopped is, for example, an L level signal, and disconnects the battery BATT and the input capacitor C. It is a signal for

バッテリ切り離し回路１０は、切替信号がＨレベルの場合、リレーＲＹ１，ＲＹ２のコイルに電流が流れてａ接点とｃ接点とが接続され、ｂ接点とｃ接点とが切り離されるので、バッテリＢＡＴＴと入力用コンデンサＣとが接続され、バッテリＢＡＴＴからの電力が入力用コンデンサＣに供給される。また、切替信号がＬレベルの場合、リレーＲＹ１，ＲＹ２のコイルに電流が流れずａ接点とｃ接点とが切り離され、ｂ接点とｃ接点とが接続されるので、バッテリＢＡＴＴと入力用コンデンサＣとが切り離され、バッテリＢＡＴＴからの電力が入力用コンデンサＣに供給されなくなり、バッテリＢＡＴＴからの不要な放電が防止される。また、抵抗Ｒと入力用コンデンサＣとが接続され、入力用コンデンサＣの電荷が放電され、バッテリ接続検出回路２の誤判定が防止される。   When the switching signal is at the H level, the battery disconnection circuit 10 causes a current to flow through the coils of the relays RY1 and RY2, the a contact and the c contact are connected, and the b contact and the c contact are disconnected. The capacitor C for use is connected, and the power from the battery BATT is supplied to the input capacitor C. When the switching signal is L level, no current flows through the coils of the relays RY1 and RY2, the a contact and the c contact are disconnected, and the b contact and the c contact are connected, so that the battery BATT and the input capacitor C are connected. And the power from the battery BATT is not supplied to the input capacitor C, and unnecessary discharge from the battery BATT is prevented. Further, the resistor R and the input capacitor C are connected, and the charge of the input capacitor C is discharged, so that erroneous determination of the battery connection detection circuit 2 is prevented.

なお、従来の技術の関連技術として、例えば特許文献１に記載されたバックアップ用バッテリ切り離し回路が知られている。   As a related art of the prior art, for example, a backup battery disconnecting circuit described in Patent Document 1 is known.

特開平１１−３３２１２９号公報JP 11-332129 A

しかしながら、リレーＲＹ１，ＲＹ２の各接点には、バッテリＢＡＴＴの満充電電圧が最大電圧として印加される。このため、リレーＲＹ１，ＲＹ２の接点最大許容電圧（接点の開閉可能な電圧の最大値）は、バッテリＢＡＴＴの満充電電圧よりも高い電圧が要求される。バッテリＢＡＴＴの満充電電圧が高くなるにつれて、リレーＲＹ１，ＲＹ２の接点最大許容電圧も高くなければならず、リレーＲＹ１，ＲＹ２の選択が限られてくるという問題があった。   However, the full charge voltage of battery BATT is applied to each contact of relays RY1 and RY2 as the maximum voltage. For this reason, the contact maximum allowable voltage of relays RY1 and RY2 (the maximum value of the voltage at which the contact can be opened and closed) is required to be higher than the fully charged voltage of battery BATT. As the full charge voltage of the battery BATT is increased, the maximum allowable contact voltage of the relays RY1 and RY2 must be increased, and there is a problem that selection of the relays RY1 and RY2 is limited.

そこで、本発明は、バッテリの満充電電圧よりも低い接点最大許容電圧のリレーを選択することができるバッテリ切り離し回路を提供することを目的とする。   Therefore, an object of the present invention is to provide a battery disconnection circuit that can select a relay having a maximum allowable contact voltage that is lower than the full charge voltage of the battery.

本発明のバッテリ切り離し回路は、バッテリと入力用コンデンサとの間に設けられる
バッテリ切り離し回路であって、前記バッテリ切り離し回路は、前記バッテリの一端に接
続される第１の固定接点と、第２の固定接点と、前記入力用コンデンサの一端に接続され
る可動接点とを有する第１のリレーと、前記バッテリの他端に接続される第１の固定接点
と、第２の固定接点と、前記入力用コンデンサの他端に接続される可動接点とを有する第
２のリレーと、前記第１のリレーの第１の固定接点と前記第１のリレーの可動接点との間
に接続された第１の電圧クランプ回路と、前記第１のリレーの第２の固定接点と前記第２
のリレーの第２の固定接点との間に接続された第２の電圧クランプ回路と、前記第２のリ
レーの第１の固定接点と前記第２のリレーの可動接点との間に接続された第３の電圧クラ
ンプ回路と、を備え、前記第１、第２及び第３の電圧クランプ回路のそれぞれは、ツェ
ナーダイオードと抵抗とが直列に接続された構成であることを特徴とする。 The battery disconnection circuit of the present invention is a battery disconnection circuit provided between a battery and an input capacitor, and the battery disconnection circuit includes a first fixed contact connected to one end of the battery, a second A first relay having a fixed contact; a movable contact connected to one end of the input capacitor; a first fixed contact connected to the other end of the battery; a second fixed contact; and the input. A second relay having a movable contact connected to the other end of the capacitor, and a first relay connected between the first fixed contact of the first relay and the movable contact of the first relay. A voltage clamp circuit, a second fixed contact of the first relay, and the second
Connected between the second fixed contact of the second relay and the second fixed contact of the second relay, and the first fixed contact of the second relay and the movable contact of the second relay A third voltage clamp circuit, and each of the first, second and third voltage clamp circuits includes a third voltage clamp circuit.
The zener diode and the resistance, wherein configuration der Rukoto connected in series.

本発明によれば、バッテリの満充電電圧よりも低い接点最大許容電圧のリレーを選択することができるバッテリ切り離し回路を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the battery disconnection circuit which can select the relay of the contact maximum allowable voltage lower than the full charge voltage of a battery can be provided.

本発明の実施例１に係るバッテリ切り離し回路を示す図である。It is a figure which shows the battery disconnection circuit which concerns on Example 1 of this invention. 従来のバッテリ切り離し回路の一例を示す図である。It is a figure which shows an example of the conventional battery disconnection circuit.

以下、本発明の実施の形態に係るバッテリ切り離し回路を図面に基づいて説明する。   Hereinafter, a battery disconnection circuit according to an embodiment of the present invention will be described with reference to the drawings.

図１は、本発明の実施例１に係るバッテリ切り離し回路を示す図である。図１に示すバッテリ切り離し回路１は、リレーＲＹ１，ＲＹ２及び電圧クランプ回路３，４，５を備えている。したがって、図２で説明した従来のバッテリ切り離し回路１０と異なる点は、電圧クランプ回路３，５が新たに設けられている点と、抵抗Ｒに代えて電圧クランプ回路４が設けられている点である。すなわち、電圧クランプ回路３，４，５は、本発明の特徴部分である。なお、その他の構成は、図２で説明した従来回路の構成と同一であるので、同一部分には同一符号を付し、その説明は省略する。   1 is a diagram illustrating a battery disconnection circuit according to a first embodiment of the present invention. The battery disconnecting circuit 1 shown in FIG. 1 includes relays RY1 and RY2 and voltage clamp circuits 3, 4, and 5. Therefore, the difference from the conventional battery disconnection circuit 10 described in FIG. 2 is that voltage clamp circuits 3 and 5 are newly provided, and that a voltage clamp circuit 4 is provided instead of the resistor R. is there. That is, the voltage clamp circuits 3, 4, and 5 are characteristic portions of the present invention. Since other configurations are the same as the configuration of the conventional circuit described in FIG. 2, the same parts are denoted by the same reference numerals, and the description thereof is omitted.

ツェナーダイオードＺＤ１と抵抗Ｒ１とが直列に接続された構成の電圧クランプ回路３（第１の電圧クランプ回路）は、ツェナーダイオードＺＤ１のカソードがバッテリＢＡＴＴの正極及びリレーＲＹ１のａ接点（第１の固定接点）に接続され、ツェナーダイオードＺＤ１のアノードが抵抗Ｒ１の一端に接続され、抵抗Ｒ１の他端がリレーＲＹ１のｃ接点（可動接点）及び入力用コンデンサＣの一端に接続されている。電圧クランプ回路３は、リレーＲＹ１のａ接点−ｃ接点間電圧をツェナーダイオードＺＤ１及び抵抗Ｒ１の電圧でクランプするものである。   In the voltage clamp circuit 3 (first voltage clamp circuit) configured such that the Zener diode ZD1 and the resistor R1 are connected in series, the cathode of the Zener diode ZD1 is the positive electrode of the battery BATT and the a contact (first fixed) of the relay RY1. The anode of the Zener diode ZD1 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the c contact (movable contact) of the relay RY1 and one end of the input capacitor C. The voltage clamp circuit 3 clamps the voltage between the contact a and the contact c of the relay RY1 with the voltage of the Zener diode ZD1 and the resistor R1.

ツェナーダイオードＺＤ２と抵抗Ｒ２とが直列に接続された構成の電圧クランプ回路４（第２の電圧クランプ回路）は、ツェナーダイオードＺＤ２のカソードがリレーＲＹ１のｂ接点（第２の固定接点）に接続され、ツェナーダイオードＺＤ２のアノードが抵抗Ｒ２の一端に接続され、抵抗Ｒ２の他端がリレーＲＹ２のｂ接点（第２の固定接点）に接続されている。電圧クランプ回路４は、リレーＲＹ１のｂ接点−ｃ接点間電圧及びリレーＲＹ２のｂ接点−ｃ接点間電圧をツェナーダイオードＺＤ２及び抵抗Ｒ２の電圧でクランプするものである。   In the voltage clamp circuit 4 (second voltage clamp circuit) in which the Zener diode ZD2 and the resistor R2 are connected in series, the cathode of the Zener diode ZD2 is connected to the b-contact (second fixed contact) of the relay RY1. The anode of the Zener diode ZD2 is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the b contact (second fixed contact) of the relay RY2. The voltage clamp circuit 4 clamps the voltage between the contact b and the contact c of the relay RY1 and the voltage between the contact b and the contact c of the relay RY2 with the voltage of the Zener diode ZD2 and the resistor R2.

ツェナーダイオードＺＤ３と抵抗Ｒ３とが直列に接続された構成の電圧クランプ回路５（第３の電圧クランプ回路）は、ツェナーダイオードＺＤ３のアノードがバッテリＢＡＴＴの負極及びリレーＲＹ２のａ接点（第１の固定接点）に接続され、ツェナーダイオードＺＤ３のカソードが抵抗Ｒ３の一端に接続され、抵抗Ｒ３の他端がリレーＲＹ２のｃ接点（可動接点）及び入力用コンデンサＣの他端に接続されている。電圧クランプ回路５は、リレーＲＹ２のａ接点−ｃ接点間電圧をツェナーダイオードＺＤ３及び抵抗Ｒ３の電圧でクランプするものである。   In the voltage clamp circuit 5 (third voltage clamp circuit) in which the Zener diode ZD3 and the resistor R3 are connected in series, the anode of the Zener diode ZD3 is the negative electrode of the battery BATT and the a contact (first fixed) of the relay RY2. The cathode of the Zener diode ZD3 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the c contact (movable contact) of the relay RY2 and the other end of the input capacitor C. The voltage clamp circuit 5 clamps the voltage between the contact a and the contact c of the relay RY2 with the voltage of the Zener diode ZD3 and the resistor R3.

ツェナーダイオードＺＤ１，ＺＤ２，ＺＤ３のそれぞれのツェナー電圧（降状電圧）ＶＺＤ１，ＶＺＤ２，ＶＺＤ３は、リレーＲＹ１，ＲＹ２のａ接点とｃ接点とが切り離されている状態（切替信号はＬレベル）において、電圧クランプ回路３，５を介して、バッテリＢＡＴＴから入力用コンデンサＣに電流が流れないように決定される。具体的には、バッテリＢＡＴＴの満充電電圧（最大電圧）をＶＢＡＴＴ（ｍａｘ）とすると、ＶＺＤ１＋ＶＺＤ２＋ＶＺＤ３ ＞ ＶＢＡＴＴ（ｍａｘ） を満たす必要がある。また、バッテリ接続検出回路２が誤判定することなく正常に動作するために、入力用コンデンサＣの端子間電圧はバッテリＢＡＴＴの放電終止電圧ＶＢＡＴＴ（ｍｉｎ）未満である必要がある。すなわち、ＶＢＡＴＴ（ｍｉｎ） ＞ ＶＺＤ２ を満たす必要がある。   Zener voltages (falling voltages) VZD1, VZD2, and VZD3 of the Zener diodes ZD1, ZD2, and ZD3 are in a state where the a contact and the c contact of the relays RY1 and RY2 are disconnected (the switching signal is L level). It is determined so that no current flows from the battery BATT to the input capacitor C via the voltage clamp circuits 3 and 5. Specifically, when the full charge voltage (maximum voltage) of the battery BATT is VBATT (max), it is necessary to satisfy VZD1 + VZD2 + VZD3> VBATT (max). Further, in order for the battery connection detection circuit 2 to operate normally without erroneous determination, the voltage between the terminals of the input capacitor C needs to be lower than the discharge end voltage VBATT (min) of the battery BATT. That is, it is necessary to satisfy VBATT (min)> VZD2.

抵抗Ｒ１，Ｒ２，Ｒ３は、ツェナーダイオードＺＤ１，ＺＤ２，ＺＤ３及び入力用コンデンサＣに過大なピーク電流が流れるのを防止するためのものである。また、抵抗Ｒ２は、入力用コンデンサＣの電荷を放電させるコンデンサ放電用抵抗でもある。   The resistors R1, R2, and R3 are for preventing an excessive peak current from flowing through the Zener diodes ZD1, ZD2, and ZD3 and the input capacitor C. The resistor R2 is also a capacitor discharging resistor that discharges the charge of the input capacitor C.

次に、このように構成された実施例１に係るバッテリ切り離し回路の作用を説明する。まず、切替信号がＬレベルの場合、バッテリ切り離し回路１は、リレーＲＹ１，ＲＹ２のｂ接点とｃ接点とが接続されている。この場合、入力用コンデンサＣの端子間電圧はツェナー電圧ＶＺＤ２まで放電される。したがって、リレーＲＹ１，ＲＹ２のａ接点−ｃ接点間電圧は、ＶＢＡＴＴ（ｍａｘ）−ＶＺＤ２の値を超える電圧にならない。また、切替信号がＨレベルの場合、バッテリ切り離し回路１は、リレーＲＹ１，ＲＹ２のａ接点とｃ接点とが接続されている。この場合、入力用コンデンサＣの端子間電圧はバッテリＢＡＴＴの出力電圧まで充電される。したがって、リレーＲＹ１，ＲＹ２のｂ接点−ｃ接点間電圧は、ＶＢＡＴＴ（ｍａｘ）−ＶＺＤ２の値を超える電圧にならない。   Next, the operation of the battery disconnection circuit according to the first embodiment configured as described above will be described. First, when the switching signal is at the L level, the battery disconnection circuit 1 is connected to the b and c contacts of the relays RY1 and RY2. In this case, the voltage across the input capacitor C is discharged to the Zener voltage VZD2. Therefore, the voltage between the contacts a and c of relays RY1 and RY2 does not exceed the value of VBATT (max) −VZD2. When the switching signal is at the H level, the battery disconnection circuit 1 is connected to the contacts a and c of the relays RY1 and RY2. In this case, the voltage across the input capacitor C is charged to the output voltage of the battery BATT. Therefore, the voltage between the b contact and the c contact of relays RY1 and RY2 does not exceed the value of VBATT (max) −VZD2.

このように、本発明の実施例１に係るバッテリ切り離し回路によれば、リレーＲＹ１，ＲＹ２の各接点には、ＶＢＡＴＴ（ｍａｘ）−ＶＺＤ２の値を超える電圧が印加されない。したがって、バッテリＢＡＴＴの満充電電圧ＶＢＡＴＴ（ｍａｘ）よりも低い接点最大許容電圧のリレーを選択することができる。   Thus, according to the battery disconnection circuit according to the first embodiment of the present invention, a voltage exceeding the value of VBATT (max) −VZD2 is not applied to each contact of the relays RY1 and RY2. Therefore, a relay having a maximum contact allowable voltage lower than the full charge voltage VBATT (max) of battery BATT can be selected.

なお、ツェナーダイオードＺＤ１，ＺＤ２，ＺＤ３は定電圧特性を持つ他の素子、例えばバリスタなどに置き換えることができる。   The Zener diodes ZD1, ZD2, and ZD3 can be replaced with other elements having constant voltage characteristics, such as varistors.

本発明のバッテリ切り離し回路は、バッテリを備える各種電源装置に適用することができる。   The battery disconnection circuit of the present invention can be applied to various power supply devices including a battery.

１ バッテリ切り離し回路
２ バッテリ接続検出回路
３，４，５ 電圧クランプ回路
ＢＡＴＴ バッテリ
ＲＹ１，ＲＹ２ リレー
ＺＤ１，ＺＤ２，ＺＤ３ ツェナーダイオード
Ｒ１，Ｒ２，Ｒ３ 抵抗
Ｃ 入力用コンデンサ DESCRIPTION OF SYMBOLS 1 Battery disconnection circuit 2 Battery connection detection circuit 3, 4, 5 Voltage clamp circuit BATT Battery RY1, RY2 Relay ZD1, ZD2, ZD3 Zener diode R1, R2, R3 Resistor C Input capacitor

Claims (2)

バッテリと入力用コンデンサとの間に設けられるバッテリ切り離し回路であって、
前記バッテリ切り離し回路は、
前記バッテリの一端に接続される第１の固定接点と、第２の固定接点と、前記入力用コ
ンデンサの一端に接続される可動接点とを有する第１のリレーと、
前記バッテリの他端に接続される第１の固定接点と、第２の固定接点と、前記入力用コ
ンデンサの他端に接続される可動接点とを有する第２のリレーと、
前記第１のリレーの第１の固定接点と前記第１のリレーの可動接点との間に接続された
第１の電圧クランプ回路と、
前記第１のリレーの第２の固定接点と前記第２のリレーの第２の固定接点との間に接続
された第２の電圧クランプ回路と、
前記第２のリレーの第１の固定接点と前記第２のリレーの可動接点との間に接続された
第３の電圧クランプ回路と、を備え、
前記第１、第２及び第３の電圧クランプ回路のそれぞれは、ツェナーダイオードと抵抗
とが直列に接続された構成であることを特徴とするバッテリ切り離し回路。 A battery disconnection circuit provided between the battery and the input capacitor,
The battery disconnect circuit is
A first relay having a first fixed contact connected to one end of the battery, a second fixed contact, and a movable contact connected to one end of the input capacitor;
A second relay having a first fixed contact connected to the other end of the battery, a second fixed contact, and a movable contact connected to the other end of the input capacitor;
A first voltage clamp circuit connected between a first fixed contact of the first relay and a movable contact of the first relay;
A second voltage clamp circuit connected between a second fixed contact of the first relay and a second fixed contact of the second relay;
A third voltage clamp circuit connected between the first fixed contact of the second relay and the movable contact of the second relay ;
Each of the first, second, and third voltage clamp circuits includes a Zener diode and a resistor.
DOO battery disconnect circuit and said configuration der Rukoto connected in series. 前記第１、第２及び第３の電圧クランプ回路のそれぞれのツェナーダイオードのツェZener diodes in each of the first, second and third voltage clamp circuits
ナー電圧の合計電圧は、前記バッテリの満充電電圧よりも高く、且つ前記第２の電圧クラThe total voltage of the second voltage is higher than the full charge voltage of the battery, and the second voltage class.
ンプ回路のツェナーダイオードのツェナー電圧は、前記バッテリの放電終止電圧よりも低The zener voltage of the zener diode of the amplifier circuit is lower than the discharge end voltage of the battery.
くなるように、前記第１、第２及び第３の電圧クランプ回路のそれぞれのツェナーダイZener dies of each of the first, second and third voltage clamp circuits
オードのツェナー電圧が決定されることを特徴とする請求項１に記載のバッテリ切り離しThe battery disconnection according to claim 1, wherein an Aether Zener voltage is determined.
回路。circuit.
JP2011261801A 2011-11-30 2011-11-30 Battery disconnect circuit Expired - Fee Related JP5804322B2 (en)

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