JP2015141062A - Battery pack measurement device - Google Patents

Battery pack measurement device Download PDF

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JP2015141062A
JP2015141062A JP2014013007A JP2014013007A JP2015141062A JP 2015141062 A JP2015141062 A JP 2015141062A JP 2014013007 A JP2014013007 A JP 2014013007A JP 2014013007 A JP2014013007 A JP 2014013007A JP 2015141062 A JP2015141062 A JP 2015141062A
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resistor
battery
voltage detection
resistors
cell balance
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村田　健治
Kenji Murata
健治 村田
淳二 中塚
Junji Nakatsuka
淳二 中塚
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To have a difference in potential of each electromotive force in a plurality of series-connected batteries balanced to become even against frequency.SOLUTION: In order to monitor the battery voltages of batteries 4-7 connected in series, resistors 10 and 11 are connected to the battery 4; resistors 12 and 13 are connected to the battery 5; resistors 14 and 15 are connected to the battery 6; resistors 16 and 17 are connected to the battery 7; resistors 18 and 19 are connected to the other terminal of the battery 7; a capacitor 21 is connected between the other terminal of the resistor 11 and the other terminal of the resistor 13; a capacitor 22 is connected between the other terminal of the resistor 13 and the other terminal of the resistor 15; a capacitor 23 is connected between the other terminal of the resistor 15 and the other terminal of the resistor 17; and a capacitor 24 is connected between the other terminal of the resistor 17 and the other terminal of the resistor 19, the values of the resistors 10, 11 being made smaller than the values of resistors 12, 13, resistors 14, 15, and resistors 16, 17, and the values of the resistors 18, 19 being made smaller than the values of resistors 12, 13, resistors 14, 15, and resistors 16, 17.

Description

本発明は、直列接続された複数個の電池において、各起電力の電位差が、周波数に対して、均一となるようにバランスさせる技術に関するものである。   The present invention relates to a technique for balancing the potential difference of each electromotive force with respect to frequency in a plurality of batteries connected in series.

複数個の二次電池を直列接続して構成された組電池装置において、過充電や各二次電池の異常な状態を回避するために、各二次電池の電圧を常時監視している。   In an assembled battery device configured by connecting a plurality of secondary batteries in series, the voltage of each secondary battery is constantly monitored in order to avoid overcharging and an abnormal state of each secondary battery.

しかしながら、各二次電池の電圧を監視する経路の周波数特性が異なると、組電池装置として精度の高い検出ができなくなる。   However, if the frequency characteristics of the path for monitoring the voltage of each secondary battery are different, highly accurate detection as an assembled battery device cannot be performed.

以下、従来の組電池測定装置について説明する。   Hereinafter, a conventional assembled battery measuring device will be described.

図４に、組電池測定装置の一例（特許文献１参照）を示す。複数個の二次電池ＢＴが直列に接続された組電池において、各電池の端子の電圧が電圧検出回路２０に与えられる。なお、二次電池（ＢＴ）は、電圧検出回路２０の各抵抗の値に対して、十分に低い値の内部抵抗を有している。   FIG. 4 shows an example of an assembled battery measurement device (see Patent Document 1). In the assembled battery in which a plurality of secondary batteries BT are connected in series, the voltage of each battery terminal is applied to the voltage detection circuit 20. Note that the secondary battery (BT) has a sufficiently low internal resistance with respect to each resistance value of the voltage detection circuit 20.

１つの二次電池（ＢＴ）９１４は、二次電池電圧Ｖｅを起電力とし、その正極を電圧検出回路２０内のセルバランス抵抗（Ｒｃ）９１５、負極をセルバランス抵抗（Ｒｃ）９１９に接続し、セルバランススイッチ（ＳＷ１）９７１をオンすることにより蓄えているエネルギーを放電することで、二次電池（ＢＴ）９１４の二次電池電圧Ｖｅを低下させることができる。このとき、セルバランス抵抗（Ｒｃ）９１５とセルバランス抵抗（Ｒｃ）９１９との電位差をセルバランス電圧Ｖｃとする。また、セルバランス抵抗（Ｒｃ）９１５からセルバランススイッチ（ＳＷ１）９７１を経由してセルバランス抵抗（Ｒｃ）９１９へ流れる電流をセルバランス電流（Ｉｃ）９２０とする。   One secondary battery (BT) 914 uses the secondary battery voltage Ve as an electromotive force, and has a positive electrode connected to the cell balance resistor (Rc) 915 in the voltage detection circuit 20 and a negative electrode connected to the cell balance resistor (Rc) 919. The secondary battery voltage Ve of the secondary battery (BT) 914 can be lowered by discharging the stored energy by turning on the cell balance switch (SW1) 971. At this time, a potential difference between the cell balance resistor (Rc) 915 and the cell balance resistor (Rc) 919 is defined as a cell balance voltage Vc. A current flowing from the cell balance resistor (Rc) 915 to the cell balance resistor (Rc) 919 via the cell balance switch (SW1) 971 is referred to as a cell balance current (Ic) 920.

更に、セルバランス抵抗（Ｒｃ）９１５とセルバランススイッチ（ＳＷ１）９７１との接続点に電圧検出抵抗（Ｒｓ）９１６を接続し、セルバランス抵抗（Ｒｃ）９１９とセルバランススイッチ（ＳＷ１）９７１との接続点に電圧検出抵抗（Ｒｓ）９１８を接続し、その電圧検出抵抗（Ｒｓ）９１６の他端と電圧検出抵抗（Ｒｓ）９１８の他端との間に電圧検出容量（Ｃｓ）９１７が接続されてローパスフィルタが形成されている。このローパスフィルタにより安定化された検出電圧ＶｒをＡＤＣ９１２で測定し、信号処理制御回路９１３で分析することで、二次電池（ＢＴ）９１４の二次電池電圧Ｖｅを測定している。なお、電圧検出抵抗（Ｒｓ）９１６から電圧検出容量（Ｃｓ）９１７を経由して電圧検出抵抗（Ｒｓ）９１８へ流れる直流電流は０である。   Further, a voltage detection resistor (Rs) 916 is connected to a connection point between the cell balance resistor (Rc) 915 and the cell balance switch (SW1) 971, and the cell balance resistor (Rc) 919 and the cell balance switch (SW1) 971 are connected. A voltage detection resistor (Rs) 918 is connected to the connection point, and a voltage detection capacitor (Cs) 917 is connected between the other end of the voltage detection resistor (Rs) 916 and the other end of the voltage detection resistor (Rs) 918. Thus, a low-pass filter is formed. The secondary battery voltage Ve of the secondary battery (BT) 914 is measured by measuring the detection voltage Vr stabilized by the low-pass filter with the ADC 912 and analyzing it with the signal processing control circuit 913. The DC current flowing from the voltage detection resistor (Rs) 916 to the voltage detection resistor (Rs) 918 via the voltage detection capacitor (Cs) 917 is zero.

これらを全ての二次電池ＢＴに設置することにより、全ての二次電池ＢＴの二次電池電圧Ｖｅを測定し、全ての二次電池電圧Ｖｅがほぼ同一となるよう、いずれかのセルバランススイッチＳＷをオン・オフ制御することで、二次電池電圧Ｖｅの均一化を図ることができる。なお、組電池監視装置９１０において、９１１はＭＵＸ、９２０はＭＵＸ制御信号（Ｍｘ）、９２１は入出力信号、９５１〜９５ｎは電圧検出端子（Ｔｓ１〜Ｔｓｎ）、９６１〜９６ｎはセルバランス端子（Ｔｃ１〜Ｔｃｎ）、９７１〜９７ｎはセルバランススイッチ（ＳＷ１〜ＳＷｎ）、９８０はスイッチ制御信号（Ｓｃ）、９８１〜９８ｎはセルバランススイッチ制御信号（Ｓｃ１〜Ｓｃｎ）である。   By installing these in all the secondary batteries BT, the secondary battery voltage Ve of all the secondary batteries BT is measured, and any of the cell balance switches is set so that all the secondary battery voltages Ve are substantially the same. By turning on / off the SW, the secondary battery voltage Ve can be made uniform. In the assembled battery monitoring device 910, 911 is a MUX, 920 is a MUX control signal (Mx), 921 is an input / output signal, 951 to 95n are voltage detection terminals (Ts1 to Tsn), and 961 to 96n are cell balance terminals (Tc1). ˜Tcn), 971 to 97n are cell balance switches (SW1 to SWn), 980 is a switch control signal (Sc), and 981 to 98n are cell balance switch control signals (Sc1 to Scn).

ここで、二次電池（ＢＴ）９１４は、電気ノイズを発生することがあり、そのノイズが、電圧検出回路２０に入ることがある。   Here, the secondary battery (BT) 914 may generate electrical noise, and the noise may enter the voltage detection circuit 20.

図５に図４の電圧検出回路２０のシミュレーション回路の一例を、図６にシミュレーション結果の一例をそれぞれ示す。   FIG. 5 shows an example of the simulation circuit of the voltage detection circuit 20 of FIG. 4, and FIG. 6 shows an example of the simulation result.

抵抗４１１〜４１１７は、図４のセルバランス抵抗（Ｒｃ）と電圧検出抵抗（Ｒｓ）とを直列接続した抵抗を示す。抵抗４１１〜４１１７の値は、いずれも４．７ｋΩである。また、電圧検出容量４２０は、抵抗４１１〜４１１７の各端子間に接続され、各々２．２μＦである。   Resistors 411 to 4117 indicate resistors in which the cell balance resistor (Rc) and the voltage detection resistor (Rs) in FIG. 4 are connected in series. The values of the resistors 411 to 4117 are all 4.7 kΩ. The voltage detection capacitor 420 is connected between the terminals of the resistors 411 to 4117 and is 2.2 μF each.

二次電池（ＢＴ）９１４を１６個縦続接続して、端子１から交流信号を与え、各電圧検出端子間の信号電圧ＶＣ０１〜ＶＣ１６の周波数特性をプロットしている。   16 secondary batteries (BT) 914 are connected in cascade, an AC signal is applied from terminal 1, and the frequency characteristics of signal voltages VC01 to VC16 between the voltage detection terminals are plotted.

図６によれば、周波数が高くなるとともに、各電圧検出端子間の信号電圧ＶＣ０１〜ＶＣ１６は、異なる周波数特性を示すようになる。   According to FIG. 6, the frequency increases, and the signal voltages VC01 to VC16 between the voltage detection terminals exhibit different frequency characteristics.

特開２０１２−１３７３３４号公報JP 2012-137334 A

このように、従来の組電池測定装置では、電圧検出回路２０を構成する電圧検出抵抗は、全て同一の抵抗値であり、また、電圧検出容量は、全て同一の容量値で構成されている。   Thus, in the conventional assembled battery measurement device, the voltage detection resistors constituting the voltage detection circuit 20 all have the same resistance value, and the voltage detection capacitors all have the same capacitance value.

このため、ローパスフィルタを形成する電圧検出抵抗（Ｒｓ）９１６を同一の抵抗値で構成した場合、電圧検出端子（Ｔｓ１〜Ｔｓｎ）９５１〜９５ｎの周波数特性が不均一になり、各二次電池ＢＴの二次電池電圧Ｖｅの検出精度が不均一になる、という課題があった。   For this reason, when the voltage detection resistor (Rs) 916 forming the low-pass filter is configured with the same resistance value, the frequency characteristics of the voltage detection terminals (Ts1 to Tsn) 951 to 95n become uneven, and each secondary battery BT. There is a problem that the detection accuracy of the secondary battery voltage Ve becomes non-uniform.

これらの課題を解決するために、本発明による組電池測定装置は、直列に接続された第１の電池、第２の電池及び第３の電池の電池電圧を監視する組電池測定装置であって、一端を前記第１の電池の一端に接続した第１の抵抗と、一端を前記第２の電池の一端に接続した第２の抵抗と、一端を前記第３の電池の一端に接続した第３の抵抗と、一端を前記第３の電池の他端に接続した第４の抵抗と、前記第１の抵抗の他端と前記第２の抵抗の他端との間に接続された第１の容量と、前記第２の抵抗の前記他端と前記第３の抵抗の他端との間に接続された第２の容量と、前記第３の抵抗の前記他端と前記第４の抵抗の他端との間に接続された第３の容量とを備え、前記第２の抵抗及び前記第３の抵抗の値に対して前記第１の抵抗の値を小さい値とし、かつ、前記第２の抵抗及び前記第３の抵抗の値に対して前記第４の抵抗の値を小さい値とした構成を有している。   In order to solve these problems, an assembled battery measurement device according to the present invention is an assembled battery measurement device that monitors battery voltages of a first battery, a second battery, and a third battery connected in series. A first resistor having one end connected to one end of the first battery, a second resistor having one end connected to one end of the second battery, and a first resistor having one end connected to one end of the third battery. 3, a fourth resistor having one end connected to the other end of the third battery, and a first resistor connected between the other end of the first resistor and the other end of the second resistor. A second capacitor connected between the other end of the second resistor and the other end of the third resistor, the other end of the third resistor, and the fourth resistor A third capacitor connected between the other end of the first resistor and a value of the first resistor smaller than a value of the second resistor and the third resistor. And has a configuration in which the smaller value the fourth value of the resistance against the second resistor and the third value of resistance.

本発明によれば、各電池の電圧を監視する経路の周波数特性を等しくして、組電池装置として精度の高い検出を実現することができる。   ADVANTAGE OF THE INVENTION According to this invention, the frequency characteristic of the path | route which monitors the voltage of each battery is made equal, and a highly accurate detection as an assembled battery apparatus is realizable.

本発明の実施形態の組電池測定装置の回路図である。It is a circuit diagram of the assembled battery measuring apparatus of embodiment of this invention. 図１の組電池測定装置のシミュレーション回路図である。It is a simulation circuit diagram of the assembled battery measuring apparatus of FIG. 図１の組電池測定装置のシミュレーション結果を示す周波数特性図である。It is a frequency characteristic figure which shows the simulation result of the assembled battery measuring apparatus of FIG. 従来例の組電池測定装置の回路図である。It is a circuit diagram of the assembled battery measuring apparatus of a prior art example. 図４の組電池測定装置のシミュレーション回路図である。It is a simulation circuit diagram of the assembled battery measuring apparatus of FIG. 図４の組電池測定装置のシミュレーション結果を示す周波数特性図である。It is a frequency characteristic figure which shows the simulation result of the assembled battery measuring apparatus of FIG.

以下、本発明の実施形態を図１〜図３に基づき説明する。なお、実施形態では、背景技術で前述した同一構成要素には同一符号を付し、その説明を省略するものとする。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the embodiment, the same components as those described in the background art are denoted by the same reference numerals, and the description thereof is omitted.

図１の組電池測定装置では、複数個の二次電池ＢＴが直列に接続され、各電池の端子の電圧が電圧検出回路２に与えられる。なお、二次電池（ＢＴ）は、電圧検出回路２の各抵抗の値に対して、十分に低い値の内部抵抗を有している。   In the assembled battery measurement device of FIG. 1, a plurality of secondary batteries BT are connected in series, and the voltage of each battery terminal is applied to the voltage detection circuit 2. The secondary battery (BT) has a sufficiently low internal resistance with respect to each resistance value of the voltage detection circuit 2.

図１において、端子１には二次電池４、二次電池５、二次電池６及び二次電池７を従属接続している。端子１には、二次電池４〜７を充電する充電電流が供給される。   In FIG. 1, a secondary battery 4, a secondary battery 5, a secondary battery 6 and a secondary battery 7 are subordinately connected to the terminal 1. A charging current for charging the secondary batteries 4 to 7 is supplied to the terminal 1.

ここで、抵抗１０の一端を二次電池４のプラス側に接続し、抵抗１２の一端を二次電池５のプラス側に接続し、抵抗１４の一端を二次電池６のプラス側に接続し、抵抗１６の一端を二次電池７のプラス側に接続し、抵抗１８の一端を二次電池７のマイナス側に接続している。抵抗１０の他端と抵抗１１の一端とを接続し、抵抗１２の他端と抵抗１３の一端とを接続し、抵抗１４の他端と抵抗１５の一端とを接続し、抵抗１６の他端と抵抗１７の一端とを接続し、抵抗１８の他端と抵抗１９の一端とを接続している。抵抗１１の他端と抵抗１３の他端との間に容量２１を接続し、抵抗１３の他端と抵抗１５の他端との間に容量２２を接続し、抵抗１５の他端と抵抗１７の他端との間に容量２３を接続し、抵抗１７の他端と抵抗１９の他端との間に容量２４を接続している。組電池監視装置３において、５１〜５５は電圧検出端子、６１〜６５はセルバランス端子、７１〜７４はセルバランススイッチ、８１〜８４はセルバランススイッチ制御信号である。   Here, one end of the resistor 10 is connected to the plus side of the secondary battery 4, one end of the resistor 12 is connected to the plus side of the secondary battery 5, and one end of the resistor 14 is connected to the plus side of the secondary battery 6. One end of the resistor 16 is connected to the plus side of the secondary battery 7, and one end of the resistor 18 is connected to the minus side of the secondary battery 7. The other end of the resistor 10 and one end of the resistor 11 are connected, the other end of the resistor 12 and one end of the resistor 13 are connected, the other end of the resistor 14 and one end of the resistor 15 are connected, and the other end of the resistor 16 And one end of the resistor 17 are connected, and the other end of the resistor 18 and one end of the resistor 19 are connected. A capacitor 21 is connected between the other end of the resistor 11 and the other end of the resistor 13, a capacitor 22 is connected between the other end of the resistor 13 and the other end of the resistor 15, and the other end of the resistor 15 and the resistor 17 are connected. A capacitor 23 is connected between the other end of the resistor 17 and a capacitor 24 is connected between the other end of the resistor 17 and the other end of the resistor 19. In the assembled battery monitoring device 3, 51 to 55 are voltage detection terminals, 61 to 65 are cell balance terminals, 71 to 74 are cell balance switches, and 81 to 84 are cell balance switch control signals.

なお、図１は、二次電池の個数が４個の場合について説明した図であり、仮に、二次電池の個数がｎ個（ｎは整数）の場合には、二次電池の各端子には、（ｎ＋１）個のセルバランス抵抗と（ｎ＋１）個の電圧検出抵抗及びｎ個の電圧検出容量が接続される。   FIG. 1 is a diagram illustrating the case where the number of secondary batteries is four. If the number of secondary batteries is n (n is an integer), each terminal of the secondary battery is connected. Are connected to (n + 1) cell balance resistors, (n + 1) voltage detection resistors and n voltage detection capacitors.

二次電池４は、二次電池電圧Ｖｅを起電力とし、その正極を電圧検出回路２内のセルバランス抵抗１０、負極をセルバランス抵抗１２に接続し、セルバランススイッチ７１をオンすることにより蓄えているエネルギーを放電することで、二次電池４の二次電池電圧Ｖｅを低下させることができる。このとき、セルバランス抵抗１０とセルバランス抵抗１２との電位差をセルバランス電圧Ｖｃとする。   The secondary battery 4 uses the secondary battery voltage Ve as an electromotive force, connects the positive electrode thereof to the cell balance resistor 10 and the negative electrode thereof to the cell balance resistor 12 in the voltage detection circuit 2, and stores the battery by turning on the cell balance switch 71. By discharging the stored energy, the secondary battery voltage Ve of the secondary battery 4 can be reduced. At this time, the potential difference between the cell balance resistor 10 and the cell balance resistor 12 is defined as a cell balance voltage Vc.

また、セルバランス抵抗１０からセルバランススイッチ７１を経由してセルバランス抵抗１２へ流れる電流をセルバランス電流とする。   Further, a current flowing from the cell balance resistor 10 to the cell balance resistor 12 via the cell balance switch 71 is defined as a cell balance current.

更に、セルバランス抵抗１０とセルバランススイッチ７１の一端との接続点に電圧検出抵抗１１を接続し、セルバランス抵抗１２とセルバランススイッチ７１の他端との接続点に電圧検出抵抗１３を接続している。また、電圧検出抵抗１１の他端と電圧検出抵抗１３の他端との間に電圧検出容量２１が接続されてローパスフィルタが形成されている。このローパスフィルタにより安定化された検出電圧Ｖｒを組電池監視装置３のＡＤＣ９１２で測定し、信号処理制御回路９１３で分析することで、二次電池４の二次電池電圧Ｖｅを測定している。   Further, the voltage detection resistor 11 is connected to the connection point between the cell balance resistor 10 and one end of the cell balance switch 71, and the voltage detection resistor 13 is connected to the connection point between the cell balance resistor 12 and the other end of the cell balance switch 71. ing. A voltage detection capacitor 21 is connected between the other end of the voltage detection resistor 11 and the other end of the voltage detection resistor 13 to form a low-pass filter. The detection voltage Vr stabilized by the low-pass filter is measured by the ADC 912 of the assembled battery monitoring device 3 and analyzed by the signal processing control circuit 913, thereby measuring the secondary battery voltage Ve of the secondary battery 4.

なお、二次電池５〜７についても、二次電池４の二次電池電圧Ｖｅを測定するのと同様の動作を行う。   For the secondary batteries 5 to 7, the same operation as measuring the secondary battery voltage Ve of the secondary battery 4 is performed.

ここで、二次電池４〜７の電気ノイズを考慮して、そのノイズが電圧検出回路２に入った影響を考慮する。   Here, the electric noise of the secondary batteries 4 to 7 is taken into consideration, and the influence of the noise entering the voltage detection circuit 2 is taken into consideration.

セルバランス抵抗１０と電圧検出抵抗１１との合成抵抗値をＲ０とし、セルバランス抵抗１８と電圧検出抵抗１９との合成抵抗値をＲ０とする。また、セルバランス抵抗１２と電圧検出抵抗１３との合成抵抗値をＲとし、セルバランス抵抗１４と電圧検出抵抗１５との合成抵抗値をＲとし、セルバランス抵抗１６と電圧検出抵抗１７との合成抵抗値をＲとする。   The combined resistance value of the cell balance resistor 10 and the voltage detection resistor 11 is R0, and the combined resistance value of the cell balance resistor 18 and the voltage detection resistor 19 is R0. The combined resistance value of the cell balance resistor 12 and the voltage detection resistor 13 is R, the combined resistance value of the cell balance resistor 14 and the voltage detection resistor 15 is R, and the combined cell balance resistor 16 and the voltage detection resistor 17 is combined. Let R be the resistance value.

ここで、Ｒ０をＲよりも十分に小さい値とすることで、各二次電池電圧の周波数特性を合わせることができる。たとえば、Ｒ０を４７Ωとし、Ｒを４．７ｋΩとする。各電圧検出容量の値を４７μＦとする。   Here, by setting R0 to a value sufficiently smaller than R, the frequency characteristics of each secondary battery voltage can be matched. For example, R0 is 47Ω and R is 4.7 kΩ. The value of each voltage detection capacitor is 47 μF.

図２に図１の電圧検出回路２のシミュレーション回路の一例を、図３にシミュレーション結果の一例をそれぞれ示す。   FIG. 2 shows an example of the simulation circuit of the voltage detection circuit 2 of FIG. 1, and FIG. 3 shows an example of the simulation result.

抵抗２１１〜２１１７は、図１のセルバランス抵抗と電圧検出抵抗とを直列接続した抵抗を示す。抵抗２１１と抵抗２１１７の値は、４７Ωである。抵抗２１２〜２１１６の値は、４．７ｋΩである。また、各電圧検出容量２２０は、各々２．２μＦである。   Resistors 211 to 2117 indicate resistors in which the cell balance resistor and the voltage detection resistor of FIG. 1 are connected in series. The values of the resistor 211 and the resistor 2117 are 47Ω. The values of the resistors 212 to 2116 are 4.7 kΩ. Each voltage detection capacitor 220 is 2.2 μF.

二次電池４を１６個縦続接続して、端子１から交流信号を与え、各電圧検出端子間の信号電圧ＶＣ０１〜ＶＣ１６の周波数特性をプロットしている。   Sixteen secondary batteries 4 are connected in cascade, an AC signal is applied from the terminal 1, and the frequency characteristics of the signal voltages VC01 to VC16 between the voltage detection terminals are plotted.

図３によれば、各電圧検出端子間の信号電圧ＶＣ０１〜ＶＣ１６の周波数特性は、ほぼ等しい値である。   According to FIG. 3, the frequency characteristics of the signal voltages VC01 to VC16 between the voltage detection terminals are substantially equal values.

これにより、各二次電池の電圧を監視する経路の周波数特性を等しくして、組電池装置として精度の高い検出を実現することができる。   Thereby, the frequency characteristic of the path | route which monitors the voltage of each secondary battery is made equal, and a highly accurate detection as an assembled battery apparatus is realizable.

以上説明してきたとおり、本発明に係る組電池測定装置は、直列接続された複数個の電池で構成された組電池を用いる電気自動車、ハイブリッド自動車、電車、船舶、ノートパソコンなど多岐に渡る商品への利用が可能である。   As described above, the assembled battery measurement device according to the present invention can be applied to a wide variety of products such as electric vehicles, hybrid vehicles, trains, ships, and notebook computers using assembled batteries composed of a plurality of batteries connected in series. Can be used.

１ 端子
２ 電圧検出回路
３ 組電池監視装置
４〜７ 二次電池
１０〜１９ 抵抗
２０ 電圧検出回路
２１〜２４ 容量
７１〜７４ スイッチ
９１０ 組電池監視装置
９１１ ＭＵＸ
９１２ ＡＤＣ
９１３ 信号処理制御回路
９１４ 二次電池
９１５ セルバランス抵抗
９１６ 電圧検出抵抗
９１７ 電圧検出容量
９１８ 電圧検出抵抗
９１９ セルバランス抵抗
９２０ ＭＵＸ制御信号
９５１〜９５ｎ 電圧検出端子
９６１〜９６ｎ セルバランス端子
９７１〜９７ｎ セルバランススイッチ
９８０ スイッチ制御信号
９８１〜９８ｎ セルバランススイッチ制御信号 1 terminal 2 voltage detection circuit 3 assembled battery monitoring device 4-7 secondary battery 10-19 resistance 20 voltage detection circuit 21-24 capacity 71-74 switch 910 assembled battery monitoring device 911 MUX
912 ADC
913 Signal processing control circuit 914 Secondary battery 915 Cell balance resistor 916 Voltage detection resistor 917 Voltage detection capacitor 918 Voltage detection resistor 919 Cell balance resistor 920 MUX control signal 951-95n Voltage detection terminal 961-96n Cell balance terminal 971-97n Cell balance Switch 980 Switch control signal 981-98n Cell balance switch control signal

Claims (2)

直列に接続された第１の電池、第２の電池及び第３の電池の電池電圧を監視する組電池測定装置であって、
一端を前記第１の電池の一端に接続した第１の抵抗と、
一端を前記第２の電池の一端に接続した第２の抵抗と、
一端を前記第３の電池の一端に接続した第３の抵抗と、
一端を前記第３の電池の他端に接続した第４の抵抗と、
前記第１の抵抗の他端と前記第２の抵抗の他端との間に接続された第１の容量と、
前記第２の抵抗の前記他端と前記第３の抵抗の他端との間に接続された第２の容量と、
前記第３の抵抗の前記他端と前記第４の抵抗の他端との間に接続された第３の容量とを備え、
前記第２の抵抗及び前記第３の抵抗の値に対して前記第１の抵抗の値を小さい値とし、かつ、前記第２の抵抗及び前記第３の抵抗の値に対して前記第４の抵抗の値を小さい値としたことを特徴とする組電池測定装置。 An assembled battery measuring device for monitoring battery voltages of a first battery, a second battery, and a third battery connected in series,
A first resistor having one end connected to one end of the first battery;
A second resistor having one end connected to one end of the second battery;
A third resistor having one end connected to one end of the third battery;
A fourth resistor having one end connected to the other end of the third battery;
A first capacitor connected between the other end of the first resistor and the other end of the second resistor;
A second capacitor connected between the other end of the second resistor and the other end of the third resistor;
A third capacitor connected between the other end of the third resistor and the other end of the fourth resistor;
The value of the first resistor is set to a small value with respect to the values of the second resistor and the third resistor, and the fourth value is set with respect to the values of the second resistor and the third resistor. An assembled battery measuring device characterized in that the resistance value is set to a small value. 直列に順次接続された第１の電池、第２の電池、第３の電池及び第ｎの電池（ｎは４以上の整数）の電池電圧を監視する組電池測定装置であって、
一端を前記第１の電池の一端に接続した第１の抵抗と、
一端を前記第２の電池の一端に接続した第２の抵抗と、
一端を前記第３の電池の一端に接続した第３の抵抗と、
一端を前記第（ｎ−１）の電池の一端に接続した第（ｎ−１）の抵抗と、
一端を前記第ｎの電池の一端に接続した第ｎの抵抗と、
一端を前記第ｎの電池の他端に接続した第（ｎ＋１）の抵抗と、
前記第１の抵抗の他端と前記第２の抵抗の他端との間に接続された第１の容量と、
前記第２の抵抗の前記他端と前記第３の抵抗の他端との間に接続された第２の容量と、
前記第３の抵抗の前記他端と前記第４の抵抗の他端との間に接続された第３の容量と、
前記第（ｎ−１）の抵抗の前記他端と前記第ｎの抵抗の他端との間に接続された第（ｎ−１）の容量と、
前記第ｎの抵抗の前記他端と前記第（ｎ＋１）の抵抗の他端との間に接続された第ｎの容量とを備え、
前記第２の抵抗から前記第ｎの抵抗の値に対して前記第１の抵抗の値を小さい値とし、かつ、前記第２の抵抗から前記第ｎの抵抗の値に対して前記第（ｎ＋１）の抵抗の値を小さい値としたことを特徴とする組電池測定装置。 An assembled battery measuring device for monitoring battery voltages of a first battery, a second battery, a third battery, and an nth battery (n is an integer of 4 or more) sequentially connected in series,
A first resistor having one end connected to one end of the first battery;
A second resistor having one end connected to one end of the second battery;
A third resistor having one end connected to one end of the third battery;
A (n-1) th resistor having one end connected to one end of the (n-1) battery;
An nth resistor having one end connected to one end of the nth battery;
An (n + 1) th resistor having one end connected to the other end of the nth battery;
A first capacitor connected between the other end of the first resistor and the other end of the second resistor;
A second capacitor connected between the other end of the second resistor and the other end of the third resistor;
A third capacitor connected between the other end of the third resistor and the other end of the fourth resistor;
A (n-1) th capacitance connected between the other end of the (n-1) th resistor and the other end of the nth resistor;
An nth capacitor connected between the other end of the nth resistor and the other end of the (n + 1) th resistor,
The value of the first resistor is set to be smaller than the value of the nth resistor from the second resistor, and the value of the (n + 1) th to the value of the nth resistor from the second resistor. The assembled battery measuring device is characterized in that the value of the resistance is reduced.
JP2014013007A 2014-01-28 2014-01-28 Battery pack measurement device Pending JP2015141062A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022186375A1 (en) 2021-03-05 2022-09-09 ヌヴォトンテクノロジージャパン株式会社 Voltage measurement system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022186375A1 (en) 2021-03-05 2022-09-09 ヌヴォトンテクノロジージャパン株式会社 Voltage measurement system
WO2022186373A1 (en) 2021-03-05 2022-09-09 ヌヴォトンテクノロジージャパン株式会社 Voltage measurement device

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