JP2015132480A - abnormality detection device - Google Patents

abnormality detection device Download PDF

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JP2015132480A
JP2015132480A JP2014002507A JP2014002507A JP2015132480A JP 2015132480 A JP2015132480 A JP 2015132480A JP 2014002507 A JP2014002507 A JP 2014002507A JP 2014002507 A JP2014002507 A JP 2014002507A JP 2015132480 A JP2015132480 A JP 2015132480A
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voltage
detection
abnormality
harness
resistor
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JP6287218B2 (en
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藤井　宏紀
Hironori Fujii
宏紀 藤井
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Denso Corp
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Denso Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an abnormality detection device capable of respectively discriminating and detecting abnormality detected by a detection board and disconnection abnormality between circuit boards connected in a daisy chain.SOLUTION: The abnormality detection device comprises: a control board 30 on which an A/D conversion circuit 33, a voltage source Vc, a voltage source Vd, and a resistor R1 are mounted; N detection boards 10 on each of which an abnormality detection circuit 21 for detecting abnormality in a block 61, a relay SW1 placed in a closed state when abnormality is detected, and a resistor R2 are mounted; a harness 40 for connecting one end of the resistor R2 to an input part of the A/D conversion circuit 33 between a detection board 10#1 and the control board 30, and connecting the other end to the voltage source Vd; and a harness 50 for connecting the resistor R2 to the downstream side in parallel sequentially beginning with the detection board 10#1 between the detection boards 10 adjacent to each other. The abnormality detection device discriminates and detects abnormality in the block 61, a disconnection in the harness 40, and a disconnection in the hardness 50 on the basis of a voltage value acquired by the A/D conversion circuit 33.

Description

本発明は、制御基板と複数の検出基板とがデイジーチェーン接続されたシステムの異常検出装置に関する。   The present invention relates to an abnormality detection apparatus for a system in which a control board and a plurality of detection boards are daisy chain connected.

近年、車両への組み付け性の向上や配線の簡略化等を目的として、車両に搭載される回路基板を分割し、各基板間をハーネスで接続することが行われている（例えば、特許文献１参照）。   2. Description of the Related Art In recent years, for the purpose of improving ease of assembly in a vehicle, simplifying wiring, and the like, circuit boards mounted on a vehicle are divided and connected to each other with a harness (for example, Patent Document 1). reference).

特許文献１では、制御手段を備えた第１コントロールユニットの出力部と、第２コントロールユニットのＡ／Ｄ変換回路とが、ハーネスで接続されている。特許文献１では、異常の種類に応じて、Ａ／Ｄ変換回路に入力される電圧を異なる電圧とする分圧回路が、両コントロールユニットに設置されており、Ａ／Ｄ変換回路に入力される電圧に基づいて、ハーネスの断線異常、ハーネスの短絡異常、及びシステム異常を判断している。   In Patent Document 1, an output unit of a first control unit including a control unit and an A / D conversion circuit of a second control unit are connected by a harness. In Patent Document 1, voltage dividing circuits that use different voltages to be input to the A / D conversion circuit according to the type of abnormality are installed in both control units and input to the A / D conversion circuit. Based on the voltage, the disconnection abnormality of the harness, the short circuit abnormality of the harness, and the system abnormality are determined.

特開２００１−１３３５０２号公報JP 2001-133502 A

回路基板を１つの制御基板と複数のスレーブ基板（検出基板）とに分割し、各基板をデイジーチェーン接続することも考えられる。複数のスレーブ基板がデイジーチェーン接続されている場合に、２つに分割された基板間の断線検出を対象としている特許文献１を適用して、複数のスレーブ基板間の断線異常を検出することはできない。   It is also conceivable to divide the circuit board into one control board and a plurality of slave boards (detection boards) and to daisy chain each board. In the case where a plurality of slave boards are connected in a daisy chain, it is possible to detect a disconnection abnormality between a plurality of slave boards by applying Patent Document 1 that is intended for detection of a disconnection between two divided boards. Can not.

本発明は、上記実情に鑑み、検出基板により検出された異常、及びデイジーチェーン接続された各基板間の断線異常を、それぞれ判別して検出可能な異常検出装置を提供することを主たる目的とする。   In view of the above circumstances, it is a primary object of the present invention to provide an abnormality detection apparatus that can detect and detect an abnormality detected by a detection board and a disconnection abnormality between each board connected in a daisy chain. .

上記課題を解決するため、本発明は、異常検出装置であって、Ａ／Ｄ変換回路と、第１電圧源と、前記第１電圧源と電圧の異なる第２電圧源と、前記第１電圧源と前記Ａ／Ｄ変換回路の入力部との間に直列に接続された第１抵抗と、が搭載された制御基板と、電気ユニットの異常を検出する検出回路と、前記検出回路により前記異常が検出された場合に閉状態にされる第１開閉器と、前記第１開閉器に対して並列に接続された第２抵抗と、がそれぞれ搭載された複数の検出基板と、前記複数の検出基板のうちの第１検出基板と前記制御基板との間で、前記第１検出基板に搭載された前記第２抵抗の一端を、前記第１抵抗及び前記Ａ／Ｄ変換回路の入力部に接続するとともに、前記第２抵抗の他端を前記第２電圧源に接続する第１ハーネスと、前記第１検出基板から順次、互いに隣接する前記検出基板間で、互いに隣接する前記検出基板にそれぞれ搭載された前記第２抵抗を、下流側へ並列に接続する第２ハーネスと、を備え、前記Ａ／Ｄ変換回路により取得された電圧値に基づいて、前記電気ユニットの異常、前記第１ハーネスの断線、及び前記第２ハーネスの断線とその断線箇所を判別して検出する。   In order to solve the above-mentioned problem, the present invention is an abnormality detection device, comprising an A / D conversion circuit, a first voltage source, a second voltage source having a voltage different from that of the first voltage source, and the first voltage. A control board on which a first resistor connected in series between the power source and the input part of the A / D converter circuit is mounted, a detection circuit for detecting an abnormality of the electric unit, and the abnormality by the detection circuit A plurality of detection boards each mounted with a first switch that is closed when the first switch is detected; and a second resistor connected in parallel to the first switch; and the plurality of detections One end of the second resistor mounted on the first detection board is connected between the first detection board and the control board among the first detection board and the input part of the A / D conversion circuit. And a first harness for connecting the other end of the second resistor to the second voltage source; A second harness for connecting the second resistors respectively mounted on the detection substrates adjacent to each other between the detection substrates adjacent to each other in order from the first detection substrate; Based on the voltage value acquired by the A / D conversion circuit, the abnormality of the electric unit, the disconnection of the first harness, the disconnection of the second harness, and the disconnection location thereof are determined and detected.

本発明によれば、複数の検出基板のそれぞれに搭載された第２抵抗は、第２ハーネスにより下流側へ並列に接続される。さらに、複数の検出基板のそれぞれに搭載された第１開閉器は、下流側へ並列に接続された第２抵抗に対してそれぞれ並列に接続される。よって、少なくとも１つの検出基板に搭載された検出回路により電気ユニットの異常が検出されて、第１開閉器が閉状態になると、並列に接続された全ての第２抵抗の両端が短絡される。   According to the present invention, the second resistor mounted on each of the plurality of detection boards is connected in parallel to the downstream side by the second harness. Furthermore, the first switch mounted on each of the plurality of detection boards is connected in parallel to the second resistor connected in parallel downstream. Therefore, when an abnormality of the electric unit is detected by the detection circuit mounted on at least one detection board and the first switch is closed, both ends of all the second resistors connected in parallel are short-circuited.

また、互いに並列に接続された複数の第２抵抗と、第１抵抗とが、第１ハーネスにより第２電圧源と第１電圧源との間に直列に接続される。そして、下流側へ並列に接続された複数の第２抵抗と、第１抵抗との接続点の電圧がＡ／Ｄ変換回路に入力される。   A plurality of second resistors connected in parallel to each other and the first resistor are connected in series between the second voltage source and the first voltage source by the first harness. And the voltage of the connection point of the some 2nd resistance connected in parallel downstream and the 1st resistance is inputted into an A / D conversion circuit.

よって、正常時、すなわち全ての検出回路により異常が検出されず、第１ハーネス及び第２ハーネスが断線していない場合には、第１電圧源と第２電圧源との電圧差を、下流側へ並列に接続された複数の第２抵抗と、第１抵抗とで分圧した電圧が、Ａ／Ｄ変換回路に入力される。また、第２ハーネスが断線した場合には、断線した箇所に応じて、下流側へ並列に接続される第２抵抗の個数が変わる。したがって、第２ハーネスが断線した箇所に応じて、Ａ／Ｄ変換回路に入力される電圧が変わる。   Therefore, when normal, that is, when no abnormality is detected by all the detection circuits and the first harness and the second harness are not disconnected, the voltage difference between the first voltage source and the second voltage source is set to the downstream side. A voltage divided by the plurality of second resistors connected in parallel with each other and the first resistor is input to the A / D conversion circuit. In addition, when the second harness is disconnected, the number of second resistors connected in parallel to the downstream side changes according to the disconnected portion. Therefore, the voltage input to the A / D conversion circuit varies depending on the location where the second harness is disconnected.

また、第１ハーネスが断線した場合には、Ａ／Ｄ変換回路には、第１電圧源の電圧が入力される。さらに、少なくとも１つの検出回路により異常が検出された場合には、下流側へ並列に接続された全ての第２抵抗の両端が短絡され、Ａ／Ｄ変換回路には、第２電圧源の電圧が入力される。すなわち、正常時、電気ユニットの異常時、第１ハーネスの断線時、第２ハーネスの断線箇所に応じて、それぞれ異なる電圧がＡ／Ｄ変換回路に入力される。   When the first harness is disconnected, the voltage of the first voltage source is input to the A / D conversion circuit. Further, when an abnormality is detected by at least one detection circuit, both ends of all the second resistors connected in parallel downstream are short-circuited, and the A / D conversion circuit includes a voltage of the second voltage source. Is entered. That is, different voltages are input to the A / D conversion circuit according to the disconnection location of the second harness when the electrical unit is normal, when the electrical unit is abnormal, when the first harness is disconnected.

したがって、Ａ／Ｄ変換回路により取得された電圧値に基づいて、電気ユニットの異常、第１ハーネスの断線、及び第２ハーネスの断線とその断線箇所を判別して検出することができる。なお、第１電圧源又は第２電圧源には接地が含まれる。   Therefore, based on the voltage value acquired by the A / D conversion circuit, the abnormality of the electric unit, the disconnection of the first harness, the disconnection of the second harness, and the disconnection location thereof can be determined and detected. The first voltage source or the second voltage source includes ground.

本実施形態に係る異常検出装置の構成を示す図。The figure which shows the structure of the abnormality detection apparatus which concerns on this embodiment. 本実施形態における正常時の等価回路を示す図。The figure which shows the equivalent circuit at the time of normal in this embodiment. 本実施形態における制御基板と検出基板間のハーネス断線時の等価回路を示す図。The figure which shows the equivalent circuit at the time of the harness disconnection between the control board in this embodiment, and a detection board. 本実施形態における検出基板間のハーネス断線時の等価回路を示す図。The figure which shows the equivalent circuit at the time of the harness disconnection between the detection boards in this embodiment. 本実施形態における正常時及び各種異常発生時と入力電圧との対応を示す表。The table | surface which shows a response | compatibility with the time of the normal time in this embodiment, and various abnormality generation | occurrence | production, and an input voltage. 参考例の異常検出装置の構成を示す図。The figure which shows the structure of the abnormality detection apparatus of a reference example. 参考例における正常時の等価回路を示す図。The figure which shows the equivalent circuit at the time of normal in a reference example. 参考例における異常検出時及びハーネス断線時の等価回路を示す図。The figure which shows the equivalent circuit at the time of the abnormality detection in a reference example, and the time of harness disconnection. 参考例における正常時及び各種異常発生時と入力電圧との対応を示す表。The table | surface which shows a response | compatibility with the time of normal and various abnormality generation | occurrence | production in a reference example, and an input voltage.

以下、異常検出装置を具現化した実施形態について、図面を参照しつつ説明する。本実施形態に係る異常検出装置は、車両に搭載されることを想定している。まず、図１を参照して、本実施形態に係る異常検出装置の構成について説明する。本実施形態に係る異常検出装置は、組電池６０のブロック６１（＃１）〜６１（＃Ｎ）の異常を検出するＮ個の検出基板１０（＃１）〜１０（＃Ｎ）、及び制御基板３０を備える。   Hereinafter, an embodiment in which an abnormality detection device is embodied will be described with reference to the drawings. The abnormality detection apparatus according to the present embodiment is assumed to be mounted on a vehicle. First, the configuration of the abnormality detection apparatus according to the present embodiment will be described with reference to FIG. The abnormality detection apparatus according to the present embodiment includes N detection boards 10 (# 1) to 10 (#N) that detect abnormalities in the blocks 61 (# 1) to 61 (#N) of the assembled battery 60, and a control. A substrate 30 is provided.

組電池６０は、複数の電池セルが互いに直列に接続されて構成された蓄電池であり、Ｎ個のブロック６１（＃１）〜６１（＃Ｎ）（電気ユニット）に分割されている。組電池６０は、リレーＳＷ２（第２開閉器）を介して、インバータ７０へ直流電力を供給するとともに、インバータ７０から直流電力の供給を受ける。リレーＳＷ２は、後述するリレー駆動回路３１により駆動され、組電池６０とインバータ７０との接続を開閉するスイッチである。リレーＳＷ２が閉状態にされると、組電池６０とインバータ７０とが接続され、リレーＳＷ２が開状態にされると、組電池６０とインバータ７０とが切り離される。   The assembled battery 60 is a storage battery configured by connecting a plurality of battery cells in series with each other, and is divided into N blocks 61 (# 1) to 61 (#N) (electrical units). The assembled battery 60 supplies DC power to the inverter 70 and also receives DC power from the inverter 70 via the relay SW2 (second switch). The relay SW2 is a switch that opens and closes the connection between the assembled battery 60 and the inverter 70, driven by a relay drive circuit 31 described later. When relay SW2 is closed, assembled battery 60 and inverter 70 are connected, and when relay SW2 is opened, assembled battery 60 and inverter 70 are disconnected.

インバータ７０（電気機器）は、組電池６０の直流電力を交流電力に変換してモータジェネレータ８０へ供給し、モータジェネレータ８０をモータとして作動させる。また、インバータ７０は、モータジェネレータ８０を発電機として作動させるとともに、モータジェネレータ８０が発電した交流電力を直流電力に変換して組電池６０に供給し、組電池６０を充電させる。モータジェネレータ８０は、車両の走行動力を発生するモータとして作動するとともに、組電池６０へ電力を供給する発電機として作動する。   The inverter 70 (electrical device) converts the DC power of the assembled battery 60 into AC power, supplies the AC power to the motor generator 80, and operates the motor generator 80 as a motor. Inverter 70 operates motor generator 80 as a generator, converts AC power generated by motor generator 80 into DC power, supplies the battery pack 60, and charges battery pack 60. The motor generator 80 operates as a motor that generates traveling power of the vehicle and also operates as a generator that supplies electric power to the assembled battery 60.

検出基板１０（＃１）〜１０（＃Ｎ）（Ｎは２以上の整数）は、それぞれ、異常検出回路２１（検出回路）及びリレーＳＷ１（第１開閉器）を備える。検出基板１０（＃１）〜１０（＃Ｎ）に搭載された異常検出回路２１は、それぞれ組電池６０のブロック６１（＃１）〜６１（＃Ｎ）の異常を検出する。具体的には、各異常検出回路２１は、それぞれ対応するブロック６１に含まれる電池セルの過電圧状態を異常として検出する。リレーＳＷ１は、異常検出回路２１による異常検出の有無に応じて、開閉されるスイッチである。   Each of the detection boards 10 (# 1) to 10 (#N) (N is an integer of 2 or more) includes an abnormality detection circuit 21 (detection circuit) and a relay SW1 (first switch). The abnormality detection circuit 21 mounted on the detection boards 10 (# 1) to 10 (#N) detects abnormalities in the blocks 61 (# 1) to 61 (#N) of the assembled battery 60, respectively. Specifically, each abnormality detection circuit 21 detects an overvoltage state of battery cells included in the corresponding block 61 as an abnormality. The relay SW1 is a switch that is opened and closed according to whether or not an abnormality is detected by the abnormality detection circuit 21.

制御基板３０は、電圧５Ｖの電圧源Ｖｃ（第１電圧源）、グランドＶｄ（第２電圧源）、抵抗Ｒ１（第１抵抗）、リレー駆動回路３１（駆動回路）及びマイコン３２を備える。リレー駆動回路３１は、入力された電圧に応じてリレーＳＷ２を開閉する。マイコン３２は、ＣＰＵ、ＲＯＭ、ＲＡＭ、Ｉ／Ｏ、データ入力部ＤＩ及びこれらを接続するバスライン等を備えたコンピュータとして構成されている。抵抗Ｒ１は、電圧源Ｖｃとリレー駆動回路３１の入力部との間に直列に接続されているとともに、電圧源Ｖｃとマイコン３２の入力部との間に直列に接続されている。すなわち、抵抗Ｒ１は、リレー駆動回路３１の入力部とマイコン３２の入力部との接続点と、電圧源Ｖｃとの間に、直列に接続されている。なお、電圧源Ｖｃの電圧を電圧Ｖｃ、グランドＶｄの電圧を電圧Ｖｄという。   The control board 30 includes a voltage source Vc (first voltage source) having a voltage of 5 V, a ground Vd (second voltage source), a resistor R1 (first resistor), a relay drive circuit 31 (drive circuit), and a microcomputer 32. The relay drive circuit 31 opens and closes the relay SW2 according to the input voltage. The microcomputer 32 is configured as a computer including a CPU, a ROM, a RAM, an I / O, a data input unit DI, a bus line connecting these, and the like. The resistor R1 is connected in series between the voltage source Vc and the input part of the relay drive circuit 31, and is connected in series between the voltage source Vc and the input part of the microcomputer 32. That is, the resistor R1 is connected in series between the connection point between the input unit of the relay drive circuit 31 and the input unit of the microcomputer 32 and the voltage source Vc. The voltage of the voltage source Vc is referred to as voltage Vc, and the voltage of the ground Vd is referred to as voltage Vd.

次に、Ｎ個の検出基板１０（＃１）〜１０（＃Ｎ）及び制御基板３０を、デイジーチェーン接続する方法について説明する。Ｎ個の検出基板１０（＃１）〜１０（＃Ｎ）及び制御基板３０を、デイジーチェーン接続する方法としては、図６の参考例に示すような接続方法が考えられる。以下、図６に示す参考例の異常検出装置について説明する。   Next, a method of daisy chain connecting the N detection boards 10 (# 1) to 10 (#N) and the control board 30 will be described. As a method of daisy chain connecting the N detection boards 10 (# 1) to 10 (#N) and the control board 30, a connection method as shown in the reference example of FIG. 6 can be considered. Hereinafter, the abnormality detection apparatus of the reference example shown in FIG. 6 will be described.

図６に示す参考例の異常検出装置では、Ｎ個の検出基板１１０（＃１）〜１１０（＃Ｎ）と制御基板１３０とを、ハーネス１４０，１５０，１６０により、デイジーチェーン接続する。詳しくは、検出基板１１０（＃１）と制御基板１３０との間で、ハーネス１４０により、検出基板１１０（＃１）に搭載されたリレーＳＷ１１の一端と、リレー駆動回路１３１の入力部及びマイコン１３２の入力部とを接続する。   In the abnormality detection apparatus of the reference example shown in FIG. 6, N detection boards 110 (# 1) to 110 (#N) and the control board 130 are daisy chain connected by harnesses 140, 150, and 160. Specifically, between the detection board 110 (# 1) and the control board 130, one end of the relay SW 11 mounted on the detection board 110 (# 1), the input unit of the relay drive circuit 131, and the microcomputer 132 are connected by the harness 140. Connect to the input section.

さらに、検出基板１１０（＃１）と検出基板１１０（＃２）との間で、ハーネス１５０により、検出基板１１０（＃１）に搭載されたリレーＳＷ１１の両端のうち、ハーネス１４０と接続されていない一端と、検出基板１１０（＃２）に搭載されたリレーＳＷ１１の一端とを接続する。そして、順次隣接する検出基板１１０間で、ハーネス１５０により、リレーＳＷ１１を直列に接続する。   Furthermore, between the detection board 110 (# 1) and the detection board 110 (# 2), the harness 150 is connected to the harness 140 among both ends of the relay SW11 mounted on the detection board 110 (# 1). One end of the relay SW11 mounted on the detection board 110 (# 2) is connected. And relay SW11 is connected in series by the harness 150 between the adjacent detection boards 110. FIG.

さらに、検出基板１１０（＃Ｎ）と制御基板１３０との間で、ハーネス１６０により、検出基板１１０（＃Ｎ）に搭載されたリレーＳＷ１１の両端のうち、ハーネス１５０と接続されていない一端と、グランドＶｄとを接続する。   Further, between the detection board 110 (#N) and the control board 130, one end of the relay SW11 mounted on the detection board 110 (#N) by the harness 160 that is not connected to the harness 150, Connect to ground Vd.

また、参考例の異常検出装置において、各検出基板１１０に搭載された異常検出回路１２１は、過電圧を検出した時にリレーＳＷ１１をオフすなわち開状態にし、過電圧を検出していない時にリレーＳＷ１１をオンすなわち閉状態にする回路である。また、制御基板１３０に搭載されたリレー駆動回路１３１は、ハイレベル電圧が入力された時にリレーＳＷ１２をオフすなわち開状態にし、ローレベル電圧が入力された時にリレーＳＷ１２をオンすなわち閉状態にする回路である。   In the abnormality detection device of the reference example, the abnormality detection circuit 121 mounted on each detection board 110 turns off the relay SW11 when an overvoltage is detected, and turns on the relay SW11 when no overvoltage is detected. This is a circuit to be closed. The relay drive circuit 131 mounted on the control board 130 is a circuit that turns off the relay SW12 when a high level voltage is input, and turns on or closes the relay SW12 when a low level voltage is input. It is.

上述したようにデイジーチェーン接続された参考例の異常検出装置において、各異常検出回路１２１により過電圧が検出されていない場合、且つハーネス１４０，１５０，１６０が断線していない場合には、各検出基板１１０に搭載されたリレーＳＷ１１が全て閉状態となる。したがって、参考例の異常検出装置では、正常時にリレー駆動回路１３１及びマイコン１３２に入力される電圧Ｖ１は、図７に示す等価回路で表すことができ、電圧Ｖ１は電圧Ｖｄすなわち０Ｖになる。   As described above, in the abnormality detection device of the reference example connected in the daisy chain, when no overvoltage is detected by each abnormality detection circuit 121 and when the harnesses 140, 150, 160 are not disconnected, each detection board All the relays SW11 mounted on 110 are closed. Therefore, in the abnormality detection device of the reference example, the voltage V1 input to the relay drive circuit 131 and the microcomputer 132 in the normal state can be expressed by the equivalent circuit shown in FIG. 7, and the voltage V1 becomes the voltage Vd, that is, 0V.

また、参考例の異常検出装置において、各異常検出回路１２１の少なくとも１つにより異常が検出された場合、又はハーネス１４０，１５０，１６０のいずれかが断線した場合には、リレー駆動回路１３１の入力部及びマイコン１３２の入力部はオープンになる。したがって、参考例の異常検出装置では、いずれかの異常の発生時に、リレー駆動回路１３１及びマイコン１３２に入力される電圧Ｖ１は、図８に示す等価回路で表すことができ、電圧Ｖ１は電圧Ｖｃすなわち５Ｖになる。   Further, in the abnormality detection device of the reference example, when abnormality is detected by at least one of the abnormality detection circuits 121 or when any of the harnesses 140, 150, 160 is disconnected, the input of the relay drive circuit 131 is performed. And the input part of the microcomputer 132 are open. Therefore, in the abnormality detection device of the reference example, when any abnormality occurs, the voltage V1 input to the relay drive circuit 131 and the microcomputer 132 can be expressed by the equivalent circuit shown in FIG. 8, and the voltage V1 is the voltage Vc. That is, 5V.

よって、参考例の異常検出装置では、図９の表に示すように、マイコン１３２に入力される電圧Ｖ１は、正常時と異常発生時とでは異なる電圧になる。しかしながら、電圧Ｖ１は、どのような異常が発生しても、異常の種類に関わらず同じ電圧になる。すなわち、異常検出回路１２１が過電圧を検出した場合でも、ハーネス１４０，１５０，１６０が断線した場合でも、電圧Ｖ１は同じ電圧になる。そのため、マイコン１３２は、入力される電圧Ｖ１に基づいて、正常時と異常発生時との判別はできるが、発生している異常が、組電池６０に含まれるセル電池の過電圧なのか、ハーネス１４０，１５０，１６０の断線なのか判別できない。さらに、マイコン１３２は、どの基板間のハーネスが断線したかも判別できない。   Therefore, in the abnormality detection device of the reference example, as shown in the table of FIG. 9, the voltage V <b> 1 input to the microcomputer 132 is different between the normal time and the abnormality occurrence time. However, regardless of the type of abnormality, the voltage V1 is the same regardless of what kind of abnormality occurs. That is, even when the abnormality detection circuit 121 detects an overvoltage or when the harnesses 140, 150, and 160 are disconnected, the voltage V1 is the same voltage. Therefore, the microcomputer 132 can discriminate between the normal time and the abnormality occurrence based on the input voltage V1, but the harness 140 determines whether the abnormality that has occurred is an overvoltage of the cell battery included in the assembled battery 60. , 150, 160 cannot be determined. Further, the microcomputer 132 cannot determine which board is disconnected.

また、組電池６０に含まれるセル電池の過電圧が検出された場合には、組電池６０とインバータ７０とを切り離し、組電池６０に含まれるセル電池が、それ以上充電されないようにする必要がある。一方、ハーネス１４０，１５０，１６０の断線時には、組電池６０とインバータ７０とを切り離す必要はない。しかしながら、組電池６０の過電圧が検出された場合でも、ハーネス１４０，１５０，１６０が断線した場合でも、リレー駆動回路１３１に入力される電圧Ｖ１は同じ電圧になる。そのため、組電池６０の過電圧が発生した場合だけでなく、ハーネス１４０，１５０，１６０の断線が発生した場合でも、リレーＳＷ１２が開状態にされ、組電池６０とインバータ７０とが切り離される。   Further, when an overvoltage of a cell battery included in the assembled battery 60 is detected, it is necessary to disconnect the assembled battery 60 and the inverter 70 so that the cell battery included in the assembled battery 60 is not charged any more. . On the other hand, when the harnesses 140, 150, 160 are disconnected, the assembled battery 60 and the inverter 70 do not need to be disconnected. However, even when an overvoltage of the assembled battery 60 is detected or when the harnesses 140, 150, 160 are disconnected, the voltage V1 input to the relay drive circuit 131 is the same voltage. Therefore, not only when the overvoltage of the assembled battery 60 occurs but also when the harnesses 140, 150, 160 are disconnected, the relay SW12 is opened, and the assembled battery 60 and the inverter 70 are disconnected.

そこで、本実施形態に係る異常検出装置では、正常時、異常検出回路２１による過電圧検出時、及びハーネスの断線箇所のそれぞれに応じて、マイコン３２及びリレー駆動回路３１に入力される電圧Ｖ１が異なる電圧になるように、デイジーチェーン接続する。   Therefore, in the abnormality detection device according to the present embodiment, the voltage V1 input to the microcomputer 32 and the relay drive circuit 31 differs depending on the normal state, when the overvoltage is detected by the abnormality detection circuit 21, and according to the disconnection location of the harness. Daisy chain connection so that the voltage is the same.

具体的には、図１に示すように、各検出基板１０には、リレーＳＷ１に対して並列に接続された抵抗Ｒ２（第２抵抗）を搭載する。また、制御基板３０には、マイコン３２の入力部に、アナログ値をデジタル値に変換するＡ／Ｄ変換回路３３を搭載する。そして、検出基板１０（＃１）（第１検出基板）と制御基板３０との間で、ハーネス４０（第１ハーネス）により、抵抗Ｒ２の一端を、抵抗Ｒ１の両端のうちの電圧源Ｖｃと接続されていない一端、リレー駆動回路３１の入力部、及びＡ／Ｄ変換回路３３の入力部に接続する。また、検出基板１０（＃１）と制御基板３０との間で、ハーネス４０により、抵抗Ｒ２の他端をグランドＶｄに接続する。すなわち、Ａ／Ｄ変換回路３３の入力部及びリレー駆動回路３１の入力部は、検出基板１０（＃１）に搭載された抵抗Ｒ２の両端のうちのグランドＶｄと接続されていない一端に、ハーネス４０を介して並列に接続される。   Specifically, as shown in FIG. 1, a resistor R2 (second resistor) connected in parallel to the relay SW1 is mounted on each detection board 10. Further, the control board 30 is equipped with an A / D conversion circuit 33 for converting an analog value into a digital value at the input section of the microcomputer 32. Then, between the detection board 10 (# 1) (first detection board) and the control board 30, the harness 40 (first harness) connects one end of the resistor R2 to the voltage source Vc of both ends of the resistor R1. Connected to one end not connected, the input part of the relay drive circuit 31, and the input part of the A / D conversion circuit 33. Further, the other end of the resistor R2 is connected to the ground Vd by the harness 40 between the detection board 10 (# 1) and the control board 30. That is, the input part of the A / D conversion circuit 33 and the input part of the relay drive circuit 31 are connected to one end of the resistor R2 mounted on the detection board 10 (# 1) not connected to the ground Vd. 40 are connected in parallel.

また、検出基板１０（＃１）から順次、互いに隣接する検出基板１０間で、ハーネス５０（第２ハーネス）により、互いに隣接する検出基板１０にそれぞれ搭載された抵抗Ｒ２を、下流側へ並列に接続する。すなわち、互いに隣接する検出基板１０間で、ハーネス５０により、制御基板３０に近い上流側の検出基板１０に搭載された抵抗Ｒ２の一端と、下流側の検出基板１０に搭載された抵抗Ｒ２の一端とを接続する。さらに、ハーネス５０により、上流側の検出基板１０に搭載された抵抗Ｒ２の他端と、下流側の検出基板１０に搭載された抵抗Ｒ２の他端とを接続する。このように、検出基板１０（＃１）から順次、下流側の検出基板１０に搭載された抵抗Ｒ２を接続する。   In addition, the resistors R2 respectively mounted on the detection boards 10 adjacent to each other are connected in parallel to the downstream side by the harness 50 (second harness) between the detection boards 10 adjacent to each other sequentially from the detection board 10 (# 1). Connecting. That is, between the detection boards 10 adjacent to each other, one end of the resistor R2 mounted on the upstream detection board 10 close to the control board 30 and one end of the resistance R2 mounted on the downstream detection board 10 by the harness 50. And connect. Further, the harness 50 connects the other end of the resistor R2 mounted on the upstream detection board 10 to the other end of the resistor R2 mounted on the downstream detection board 10. In this manner, the resistor R2 mounted on the downstream detection board 10 is connected sequentially from the detection board 10 (# 1).

また、各検出基板１０に搭載された異常検出回路２１は、組電池６０の過電圧を検出した時にリレーＳＷ１をオンすなわち閉状態にし、組電池６０の過電圧を検出していない時にリレーＳＷ１をオフすなわち開状態にする回路である。制御基板３０に搭載されたリレー駆動回路３１は、電圧Ｖｄが入力されたことを条件として、リレーＳＷ２をオフすなわち開状態にする回路である。詳しくは、リレー駆動回路３１は、ローレベル電圧が入力されたことを条件として、リレーＳＷ２を開状態にする回路である。   In addition, the abnormality detection circuit 21 mounted on each detection board 10 turns on the relay SW1 when the overvoltage of the assembled battery 60 is detected, or turns off the relay SW1 when the overvoltage of the assembled battery 60 is not detected. This is a circuit to be opened. The relay drive circuit 31 mounted on the control board 30 is a circuit that turns off the relay SW2 on the condition that the voltage Vd is input. Specifically, the relay drive circuit 31 is a circuit that opens the relay SW2 on condition that a low-level voltage is input.

本実施形態に係る異常検出装置において、各異常検出回路２１により組電池６０の過電圧が検出されていない場合、且つハーネス４０，５０が断線していない場合には、各検出基板１０に搭載されたリレーＳＷ１が全て開状態になる。したがって、本実施形態に係る異常検出相違において、正常時にリレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される電圧Ｖ１は、図２に示す等価回路で表すことができる。詳しくは、電圧Ｖｃを、互いに並列に接続されたＮ個の抵抗Ｒ２と、抵抗Ｒ１とで分圧した電圧Ｖ１＝Ｖｃ×（Ｒ２／Ｎ）／（Ｒ１＋Ｒ２／Ｎ）が、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される。   In the abnormality detection device according to the present embodiment, when the overvoltage of the assembled battery 60 is not detected by each abnormality detection circuit 21 and when the harnesses 40 and 50 are not disconnected, they are mounted on each detection board 10. Relays SW1 are all opened. Therefore, in the abnormality detection difference according to the present embodiment, the voltage V1 input to the relay drive circuit 31 and the A / D conversion circuit 33 in the normal state can be represented by the equivalent circuit shown in FIG. Specifically, a voltage V1 = Vc × (R2 / N) / (R1 + R2 / N) obtained by dividing the voltage Vc by N resistors R2 connected in parallel with each other and the resistor R1 is the relay drive circuit 31 and Input to the A / D conversion circuit 33.

また、本実施形態に係る異常検出装置において、少なくとも１つの異常検出回路２１により組電池６０の過電圧が検出された場合には、図２において、リレーＳＷ１が閉状態となり、互いに並列に接続されたＮ個の抵抗Ｒ２の両端が短絡される。よって、少なくとも１つの異常検出回路２１により過電圧が検出された場合には、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される電圧Ｖ１は電圧Ｖｄすなわち０Ｖとなる。   In the abnormality detection device according to the present embodiment, when the overvoltage of the assembled battery 60 is detected by at least one abnormality detection circuit 21, the relay SW1 is closed in FIG. 2 and connected in parallel to each other. Both ends of the N resistors R2 are short-circuited. Therefore, when an overvoltage is detected by at least one abnormality detection circuit 21, the voltage V1 input to the relay drive circuit 31 and the A / D conversion circuit 33 becomes the voltage Vd, that is, 0V.

また、検出基板１０（＃１）と制御基板３０との間で、ハーネス４０が断線した場合には、リレー駆動回路３１及びＡ／Ｄ変換回路３３の入力部はオープンになる。したがって、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される電圧Ｖ１は、図３に示す等価回路で表すことができ、電圧Ｖ１は電圧Ｖｃすなわち５Ｖとなる。   In addition, when the harness 40 is disconnected between the detection board 10 (# 1) and the control board 30, the input portions of the relay drive circuit 31 and the A / D conversion circuit 33 are opened. Therefore, the voltage V1 input to the relay drive circuit 31 and the A / D conversion circuit 33 can be expressed by the equivalent circuit shown in FIG. 3, and the voltage V1 becomes the voltage Vc, that is, 5V.

また、互いに隣接する検出基板１０間で、ハーネス５０が断線した場合には、断線した箇所よりも上流側の検出基板１０に搭載された抵抗Ｒ２は、互いに並列に接続されるが、断線した箇所よりも下流側の検出基板１０に搭載された抵抗Ｒ２は、並列に接続されない。例えば、検出基板１０（＃２）と検出基板１０（＃３）との間で、ハーネス５０が断線した場合には、２個の抵抗Ｒ２が互いに並列に接続される。この場合に、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される電圧Ｖ１は、図４で示す等価回路で表すことができる。よって、この場合、電圧Ｖｃを、互いに並列に接続された２個の抵抗Ｒ２と、抵抗Ｒ１とで分圧した電圧Ｖ１＝Ｖｃ×（Ｒ２／２）／（Ｒ１＋Ｒ２／２）が、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される。   In addition, when the harness 50 is disconnected between the detection substrates 10 adjacent to each other, the resistors R2 mounted on the detection substrate 10 on the upstream side of the disconnected portion are connected in parallel to each other, but the disconnected portion The resistor R2 mounted on the detection board 10 on the downstream side is not connected in parallel. For example, when the harness 50 is disconnected between the detection board 10 (# 2) and the detection board 10 (# 3), the two resistors R2 are connected in parallel to each other. In this case, the voltage V1 input to the relay drive circuit 31 and the A / D conversion circuit 33 can be represented by the equivalent circuit shown in FIG. Therefore, in this case, a voltage V1 = Vc × (R2 / 2) / (R1 + R2 / 2) obtained by dividing the voltage Vc by the two resistors R2 connected in parallel with each other and the resistor R1 is the relay drive circuit. 31 and the A / D conversion circuit 33.

検出基板１０（＃α）と検出基板１０（＃α＋１）との間で、ハーネス５０が断線した場合には、α個の抵抗Ｒ２が互いに並列に接続される。よって、この場合、電圧Ｖｃを、互いに並列に接続されたα個の抵抗Ｒ２と、抵抗Ｒ１とで分圧した電圧Ｖ１＝Ｖｃ×（Ｒ２／α）／（Ｒ１＋Ｒ２／α）が、リレー駆動回路３１及びＡ／Ｄ変換回路３３に入力される。   When the harness 50 is disconnected between the detection board 10 (# α) and the detection board 10 (# α + 1), α resistors R2 are connected in parallel to each other. Therefore, in this case, the voltage V1 = Vc × (R2 / α) / (R1 + R2 / α) obtained by dividing the voltage Vc by α resistors R2 connected in parallel with each other and the resistor R1 is the relay drive circuit. 31 and the A / D conversion circuit 33.

よって、本実施形態に係る異常検出装置では、図５の表に示すように、Ａ／Ｄ変換回路３３に入力される電圧Ｖ１は、正常時と異常発生時とで異なる電圧になるとともに、異常の種類に応じて異なる電圧になる。詳しくは、少なくとも１つの異常検出回路２１により組電池６０の過電圧が検出された時、ハーネス４０が断線した時、及びハーネス５０が断線した時とで、電圧Ｖ１は異なる電圧になる。さらに、ハーネス５０が断線した時は、断線箇所すなわち何番目の検出基板１０間で断線したかに応じて、電圧Ｖ１は異なる電圧になる。   Therefore, in the abnormality detection device according to the present embodiment, as shown in the table of FIG. 5, the voltage V1 input to the A / D conversion circuit 33 is different between the normal time and the abnormality occurrence time, The voltage varies depending on the type. Specifically, the voltage V1 is different when the overvoltage of the assembled battery 60 is detected by the at least one abnormality detection circuit 21, when the harness 40 is disconnected, and when the harness 50 is disconnected. Furthermore, when the harness 50 is disconnected, the voltage V1 becomes a different voltage depending on the disconnection location, that is, what number of detection substrates 10 is disconnected.

したがって、マイコン３２は、Ａ／Ｄ変換回路３３によりデジタル値に変換され電圧Ｖ１の電圧値に基づいて、組電池６０の過電圧状態（電気ユニットの異常）、ハーネス４０の断線、及びハーネス５０の断線とのその断線箇所を判別して検出する。   Therefore, the microcomputer 32 is converted into a digital value by the A / D conversion circuit 33, and based on the voltage value of the voltage V1, the overvoltage state of the assembled battery 60 (abnormality of the electric unit), the disconnection of the harness 40, and the disconnection of the harness 50 The disconnection portion is discriminated and detected.

リレー駆動回路３１は、入力された電圧Ｖ１と閾値とを比較して、入力された電圧Ｖ１がローレベル電圧か、ハイレベル電圧か判定する。リレー駆動回路３１は、例えば、電圧Ｖ１が１Ｖ以下の場合にローレベル電圧と判定し、電圧Ｖ１が２．５Ｖ以上の場合にハイレベル電圧と判定する。電圧Ｖｄは、リレー駆動回路３１によりローレベル電圧と認識される電圧であり、電圧Ｖｃは、リレー駆動回路３１によりハイレベル電圧と認識される電圧である。   The relay drive circuit 31 compares the input voltage V1 with a threshold value and determines whether the input voltage V1 is a low level voltage or a high level voltage. For example, the relay drive circuit 31 determines a low level voltage when the voltage V1 is 1 V or less, and determines a high level voltage when the voltage V1 is 2.5 V or more. The voltage Vd is a voltage recognized as a low level voltage by the relay drive circuit 31, and the voltage Vc is a voltage recognized as a high level voltage by the relay drive circuit 31.

ここで、正常時の電圧Ｖ１＝（Ｖｃ―Ｖｄ）×（Ｒ２／Ｎ）／（Ｒ１＋Ｒ２／Ｎ）が、リレー駆動回路３１によりハイレベル電圧と認識される範囲になるように、Ｎ、Ｖｃ、Ｖｄ、Ｒ１及びＲ２の各値が設定されている。ハーネス５０の断線時の電圧Ｖ１は、Ｖｃ〜（Ｖｃ―Ｖｄ）×（Ｒ２／２）／（Ｒ１＋Ｒ２／Ｎ）の電圧となるため、ハーネス５０の断線時の電圧Ｖ１も、リレー駆動回路３１によりハイレベル電圧と認識される。例えば、抵抗Ｒ２の値を、Ｒ２＝４×Ｎ×Ｒ１とすると、正常時の電圧Ｖ１は４Ｖになり、ハーネス５０の断線時の電圧Ｖ１は５Ｖから４Ｖの間の電圧となる。   Here, N, Vc, and so that the normal voltage V1 = (Vc−Vd) × (R2 / N) / (R1 + R2 / N) is in a range recognized by the relay drive circuit 31 as a high level voltage. Each value of Vd, R1, and R2 is set. Since the voltage V1 when the harness 50 is disconnected is a voltage of Vc to (Vc−Vd) × (R2 / 2) / (R1 + R2 / N), the voltage V1 when the harness 50 is disconnected is also determined by the relay drive circuit 31. Recognized as a high level voltage. For example, when the value of the resistor R2 is R2 = 4 × N × R1, the voltage V1 at the normal time is 4V, and the voltage V1 when the harness 50 is disconnected is a voltage between 5V and 4V.

それゆえ、図５の表に示すように、異常検出回路２１により組電池６０の過電圧が検出された場合に限って、リレー駆動回路３１により電圧Ｖ１がローレベル電圧と認識され、組電池６０とインバータ７０とが切り離される。正常時、及びハーネス４０，５０の断線時には、リレー駆動回路３１により電圧Ｖ１がハイレベル電圧と認識され、組電池６０とインバータ７０とは接続されたままになる。   Therefore, as shown in the table of FIG. 5, only when the overvoltage of the assembled battery 60 is detected by the abnormality detection circuit 21, the voltage V1 is recognized as a low level voltage by the relay drive circuit 31, and the assembled battery 60 The inverter 70 is disconnected. During normal operation and when the harnesses 40 and 50 are disconnected, the relay drive circuit 31 recognizes the voltage V1 as a high level voltage, and the assembled battery 60 and the inverter 70 remain connected.

また、Ａ／Ｄ変換回路３３の入力部とリレー駆動回路３１の入力部とは、検出基板１０（＃１）に搭載された抵抗Ｒ２の一端に並列に接続されており、電圧Ｖ１は、Ａ／Ｄ変換回路３３及びリレー駆動回路３１のそれぞれに入力される。そのため、Ａ／Ｄ変換回路３３により取得された電圧Ｖ１の電圧値に基づいて、マイコン３２により異常の有無及び異常の種類を判別する処理と、リレー駆動回路３１により、マイコン３２を介さずに、組電池６０とインバータ７０との接続をデジタル信号で制御する処理とが、分離して行われる。   The input part of the A / D conversion circuit 33 and the input part of the relay drive circuit 31 are connected in parallel to one end of the resistor R2 mounted on the detection board 10 (# 1), and the voltage V1 is A The signal is input to each of the / D conversion circuit 33 and the relay drive circuit 31. Therefore, based on the voltage value of the voltage V1 acquired by the A / D conversion circuit 33, the microcomputer 32 determines whether or not there is an abnormality and the type of abnormality, and the relay drive circuit 31 without using the microcomputer 32. The process of controlling the connection between the assembled battery 60 and the inverter 70 with a digital signal is performed separately.

以上説明した本実施形態によれば、以下の効果を奏する。   According to this embodiment described above, the following effects are obtained.

・正常時には、電圧Ｖｃ（５Ｖ）と電圧Ｖｄ（０Ｖ）との電圧差を、互いに並列に接続されたＮ個の抵抗Ｒ２と、抵抗Ｒ１とで分圧した電圧Ｖ１が、Ａ／Ｄ変換回路３３へ入力される。また、少なくとも１つの異常検出回路２１により過電圧が検出された場合には、互いに並列に接続された全ての抵抗Ｒ２の両端が短絡され、Ａ／Ｄ変換回路３３には、電圧Ｖｄが入力される。   In normal operation, the voltage V1 obtained by dividing the voltage difference between the voltage Vc (5V) and the voltage Vd (0V) by the N resistors R2 and the resistor R1 connected in parallel with each other is the A / D converter circuit. 33 is input. Further, when an overvoltage is detected by at least one abnormality detection circuit 21, both ends of all the resistors R <b> 2 connected in parallel with each other are short-circuited, and the voltage Vd is input to the A / D conversion circuit 33. .

また、ハーネス４０が断線した場合には、Ａ／Ｄ変換回路３３には、電圧Ｖｃが入力される。さらに、ハーネス５０が断線した場合には、断線した箇所よりも上流側の検出基板１０に搭載された抵抗Ｒ２が互いに並列に接続され、断線した箇所に応じて異なる電圧Ｖ１が、Ａ／Ｄ変換回路３３に入力される。したがって、Ａ／Ｄ変換回路３３により取得された電圧値に基づいて、組電池６０の異常、ハーネス４０の断線、及びハーネス５０の断線とその断線箇所を判別して検出することができる。   When the harness 40 is disconnected, the voltage Vc is input to the A / D conversion circuit 33. Further, when the harness 50 is disconnected, the resistors R2 mounted on the detection board 10 on the upstream side of the disconnected position are connected in parallel to each other, and the voltage V1 that differs depending on the disconnected position is A / D converted. Input to the circuit 33. Therefore, based on the voltage value acquired by the A / D conversion circuit 33, the abnormality of the assembled battery 60, the disconnection of the harness 40, the disconnection of the harness 50, and the disconnection location thereof can be determined and detected.

・リレー駆動回路３１に電圧Ｖｄすなわちローレベル電圧が入力された場合に限って、組電池６０とインバータ７０との接続が開状態にされる。よって、少なくとも１つの異常検出回路２１により、組電池６０に含まれる電池セルの過電圧状態が検出された場合には、リレー駆動回路３１に電圧Ｖｄが入力されて、組電池６０とインバータ７０を切り離すことができる。すなわち、過電圧状態の電池セルがそれ以上充電されないようにすることができる。   Only when the voltage Vd, that is, the low-level voltage is input to the relay drive circuit 31, the connection between the assembled battery 60 and the inverter 70 is opened. Therefore, when the overvoltage state of the battery cell included in the assembled battery 60 is detected by the at least one abnormality detection circuit 21, the voltage Vd is input to the relay drive circuit 31, and the assembled battery 60 and the inverter 70 are disconnected. be able to. That is, the battery cell in an overvoltage state can be prevented from being charged any more.

・リレー駆動回路３１により、入力された電圧Ｖ１がローレベル電圧か否かに基づいて、組電池６０とインバータ７０との接続の開閉をデジタル信号で制御できる。   The relay drive circuit 31 can control the opening / closing of the connection between the assembled battery 60 and the inverter 70 with a digital signal based on whether or not the input voltage V1 is a low level voltage.

・Ｖｃ及び（Ｖｃ―Ｖｄ）×（Ｒ２／Ｎ）／（Ｒ１＋Ｒ２／Ｎ）が、リレー駆動回路３１によりハイレベル電圧と認識されるように、Ｎ、Ｖｃ、Ｖｄ、Ｒ１及びＲ２の各値が設定される。これにより、正常時、及びハーネス４０，５０の断線時には、組電池６０とインバータ７０とを接続させた状態にできる。すなわち、ハーネス４０，５０が断線した場合には、組電池６０とインバータ７０とを接続させた状態で、ハーネス４０の断線、及びハーネス５０の断線とその断線箇所を検出できる。   The values of N, Vc, Vd, R1, and R2 are such that Vc and (Vc−Vd) × (R2 / N) / (R1 + R2 / N) are recognized as a high level voltage by the relay drive circuit 31. Is set. As a result, the assembled battery 60 and the inverter 70 can be connected in a normal state and when the harnesses 40 and 50 are disconnected. That is, when the harnesses 40 and 50 are disconnected, the disconnection of the harness 40, the disconnection of the harness 50, and the disconnection location thereof can be detected in a state where the assembled battery 60 and the inverter 70 are connected.

・抵抗Ｒ１と抵抗Ｒ２との接続点の電圧Ｖ１が、Ａ／Ｄ変換回路３３及びリレー駆動回路３１にそれぞれ入力される。よって、入力された電圧Ｖ１の電圧値を取得し、取得した電圧値に基づいて異常を判別する処理と、入力された電圧Ｖ１がローレベル電圧か否かに応じて、組電池６０とインバータ７０との接続をデジタル信号で制御する処理と、を分離して行うことができる。   The voltage V1 at the connection point between the resistor R1 and the resistor R2 is input to the A / D conversion circuit 33 and the relay drive circuit 31, respectively. Therefore, the battery pack 60 and the inverter 70 are acquired according to the process of acquiring the voltage value of the input voltage V1, determining the abnormality based on the acquired voltage value, and whether the input voltage V1 is a low level voltage. And the process of controlling the connection with the digital signal can be performed separately.

（他の実施形態）
・グランドＶｄは、リレー駆動回路３１によりローレベル電圧と認識される電圧の電圧源であればよい。 (Other embodiments)
The ground Vd may be a voltage source that is recognized as a low level voltage by the relay drive circuit 31.

・検出基板１０（＃１）に搭載された抵抗Ｒ２の一端に、マイコン３２及びリレー駆動回路３１を順に直列に接続し、Ａ／Ｄ変換回路３３により取得された電圧値が電圧Ｖｄの値であった場合に、リレー駆動回路３１によりリレーＳＷ２を開状態にしてもよい。   The microcomputer 32 and the relay drive circuit 31 are connected in series to one end of the resistor R2 mounted on the detection board 10 (# 1), and the voltage value acquired by the A / D conversion circuit 33 is the value of the voltage Vd. If there is, the relay drive circuit 31 may open the relay SW2.

・電圧Ｖｃをリレー駆動回路３１によりローレベル電圧と認識される電圧にし、電圧Ｖｄをリレー駆動回路３１によりハイレベル電圧と認識される電圧としてもよい。この場合、リレー駆動回路３１は、電圧Ｖ１がハイレベル電圧であることを条件として、リレーＳＷ２を開状態にする。また、（Ｖｄ−Ｖｃ）×Ｒ１／（Ｒ１＋Ｒ２／Ｎ）がローレベル電圧と認識されるように、Ｎ、Ｖｄ、Ｖｃ、Ｒ１及びＲ２を設定すると、正常時、及びハーネス４０，５０の断線時は、リレー駆動回路３１によりローレベル電圧と認識され、リレーＳＷ２は閉状態にされる。   The voltage Vc may be a voltage recognized as a low level voltage by the relay drive circuit 31, and the voltage Vd may be a voltage recognized as a high level voltage by the relay drive circuit 31. In this case, the relay drive circuit 31 opens the relay SW2 on condition that the voltage V1 is a high level voltage. Moreover, when N, Vd, Vc, R1, and R2 are set so that (Vd−Vc) × R1 / (R1 + R2 / N) is recognized as a low level voltage, when the harnesses 40 and 50 are disconnected. Is recognized as a low level voltage by the relay drive circuit 31, and the relay SW2 is closed.

・異常検出装置は車両に搭載されたものに限らない。また、異常検出回路２１は、組電池以外の電気ユニット、例えば、アクチュエータや液晶ディスプレイの駆動装置等の異常を検出するものであってもよい。   -The abnormality detection device is not limited to the one installed in the vehicle. Further, the abnormality detection circuit 21 may detect an abnormality of an electric unit other than the assembled battery, for example, an actuator or a driving device for a liquid crystal display.

１０…検出基板、２１…異常検出回路、３０…制御基板、３１…リレー駆動回路、３２…マイコン、３３…Ａ／Ｄ変換回路、４０，５０…ハーネス、６１…ブロック、Ｒ１，Ｒ２…抵抗、ＳＷ１，ＳＷ２…リレー。   DESCRIPTION OF SYMBOLS 10 ... Detection board, 21 ... Abnormality detection circuit, 30 ... Control board, 31 ... Relay drive circuit, 32 ... Microcomputer, 33 ... A / D conversion circuit, 40, 50 ... Harness, 61 ... Block, R1, R2 ... Resistance, SW1, SW2 ... Relay.

Claims (6)

Ａ／Ｄ変換回路（３３）と、第１電圧源（Ｖｃ）と、前記第１電圧源と電圧の異なる第２電圧源（Ｖｄ）と、前記第１電圧源と前記Ａ／Ｄ変換回路の入力部との間に直列に接続された第１抵抗（Ｒ１）と、が搭載された制御基板（３０）と、
電気ユニット（６１）の異常を検出する検出回路（２１）と、前記検出回路により前記異常が検出された場合に閉状態にされる第１開閉器（ＳＷ１）と、前記第１開閉器に対して並列に接続された第２抵抗（Ｒ２）と、がそれぞれ搭載された複数の検出基板（１０）と、
前記複数の検出基板のうちの第１検出基板と前記制御基板との間で、前記第１検出基板に搭載された前記第２抵抗の一端を、前記第１抵抗及び前記Ａ／Ｄ変換回路の入力部に接続するとともに、前記第２抵抗の他端を前記第２電圧源に接続する第１ハーネス（４０）と、
前記第１検出基板から順次、互いに隣接する前記検出基板間で、互いに隣接する前記検出基板にそれぞれ搭載された前記第２抵抗を、下流側へ並列に接続する第２ハーネス（５０）と、を備え、
前記Ａ／Ｄ変換回路により取得された電圧値に基づいて、前記電気ユニットの異常、前記第１ハーネスの断線、及び前記第２ハーネスの断線とその断線箇所を判別して検出することを特徴とする異常検出装置。 An A / D conversion circuit (33), a first voltage source (Vc), a second voltage source (Vd) having a voltage different from that of the first voltage source, the first voltage source, and the A / D conversion circuit. A control board (30) on which a first resistor (R1) connected in series with the input unit is mounted;
A detection circuit (21) for detecting an abnormality of the electric unit (61), a first switch (SW1) that is closed when the abnormality is detected by the detection circuit, and the first switch A plurality of detection boards (10) each having a second resistor (R2) connected in parallel with each other;
One end of the second resistor mounted on the first detection board between the first detection board and the control board among the plurality of detection boards is connected to the first resistor and the A / D conversion circuit. A first harness (40) for connecting to the input unit and connecting the other end of the second resistor to the second voltage source;
A second harness (50) for connecting the second resistors respectively mounted on the detection boards adjacent to each other in parallel between the detection boards adjacent to each other in order from the first detection board; Prepared,
Based on the voltage value acquired by the A / D conversion circuit, the abnormality of the electric unit, the disconnection of the first harness, the disconnection of the second harness, and the disconnection location thereof are determined and detected. Anomaly detection device. 前記制御基板には、前記電気ユニットと電気機器（７０）との接続を開閉する第２開閉器（ＳＷ２）を駆動する駆動回路（３１）が搭載され、
前記駆動回路の入力部は、前記第１検出基板に搭載された前記第２抵抗の両端のうちの前記第２電圧源と接続されていない一端と、前記第１ハーネスを介して接続されており、
前記駆動回路は、前記第２電圧源の電圧が入力されたことを条件として、前記第２開閉器を開状態にする請求項１に記載の異常検出装置。 A drive circuit (31) for driving a second switch (SW2) for opening and closing the connection between the electric unit and the electric device (70) is mounted on the control board,
The input portion of the drive circuit is connected to one end of the two ends of the second resistor mounted on the first detection board that is not connected to the second voltage source via the first harness. ,
The abnormality detection device according to claim 1, wherein the drive circuit opens the second switch on condition that a voltage of the second voltage source is input. 前記第２電圧源の電圧は、前記駆動回路によってローレベル電圧と認識される電圧であり、
前記駆動回路は、前記ローレベル電圧が入力されたことを条件として、前記第２開閉器を開状態にする請求項２に記載の異常検出装置。 The voltage of the second voltage source is a voltage recognized as a low level voltage by the driving circuit,
The abnormality detection device according to claim 2, wherein the driving circuit opens the second switch on condition that the low-level voltage is input. 前記検出基板の数をＮ（２以上の整数）個、前記第１電圧源の電圧をＶｃ、前記第２電圧源の電圧をＶｄ、前記第１抵抗をＲ１、前記第２抵抗をＲ２としたとき、
Ｖｃ及び（Ｖｃ―Ｖｄ）×（Ｒ２／Ｎ）／（Ｒ１＋Ｒ２／Ｎ）で表される電圧が、前記駆動回路によってハイレベル電圧と認識される範囲になるように、Ｎ、Ｖｃ、Ｖｄ、Ｒ１及びＲ２の各値が設定されている請求項３に記載の異常検出装置。 The number of detection substrates is N (an integer greater than or equal to 2), the voltage of the first voltage source is Vc, the voltage of the second voltage source is Vd, the first resistor is R1, and the second resistor is R2. When
N, Vc, Vd, R1 so that the voltage represented by Vc and (Vc−Vd) × (R2 / N) / (R1 + R2 / N) is in a range recognized as a high level voltage by the drive circuit. The abnormality detecting device according to claim 3, wherein each value of R2 and R2 is set. 前記Ａ／Ｄ変換回路の入力部及び前記駆動回路の入力部は、前記第１検出基板に搭載された前記第２抵抗の両端のうちの前記第２電圧源と接続されていない一端に、前記第１ハーネスを介して並列に接続されている請求項３又は４に記載の異常検出装置。   The input part of the A / D conversion circuit and the input part of the drive circuit are connected to the one end of the second resistor mounted on the first detection board and not connected to the second voltage source. The abnormality detection device according to claim 3 or 4 connected in parallel via the first harness. 前記電気ユニットは、複数の電池セルが直列に接続された組電池を複数のブロック（６１）に分割したうちの１つのブロックであり、
前記電気機器は、前記組電池に電力を供給する機器であり、
各検出基板に搭載された前記検出回路は、それぞれ対応する前記ブロックに含まれる電池セルの過電圧状態を異常として検出する請求項２〜５のいずれかに記載の異常検出装置。 The electric unit is one block obtained by dividing an assembled battery in which a plurality of battery cells are connected in series into a plurality of blocks (61),
The electrical device is a device that supplies power to the assembled battery,
The abnormality detection device according to claim 2, wherein the detection circuit mounted on each detection board detects an overvoltage state of a battery cell included in the corresponding block as an abnormality.
JP2014002507A 2014-01-09 2014-01-09 Anomaly detection device Active JP6287218B2 (en)

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JP2018066588A (en) * 2016-10-17 2018-04-26 株式会社デンソー Battery pack controller

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WO2018047552A1 (en) * 2016-09-12 2018-03-15 ボッシュ株式会社 Heater control system and electronic control device
JP2018066588A (en) * 2016-10-17 2018-04-26 株式会社デンソー Battery pack controller

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