JP7287837B2 - Battery controller, battery pack - Google Patents

Battery controller, battery pack Download PDF

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JP7287837B2
JP7287837B2 JP2019106564A JP2019106564A JP7287837B2 JP 7287837 B2 JP7287837 B2 JP 7287837B2 JP 2019106564 A JP2019106564 A JP 2019106564A JP 2019106564 A JP2019106564 A JP 2019106564A JP 7287837 B2 JP7287837 B2 JP 7287837B2
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shunt resistor
connection
connector
detection circuit
current detection
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JP2020201059A (en
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雄二 吉岡
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Hitachi Astemo 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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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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  • Battery Mounting, Suspending (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Description

本発明は、電池制御装置および電池制御装置を備えた電池パックに関する。 The present invention relates to a battery control device and a battery pack provided with the battery control device.

本願発明の背景技術として、下記の特許文献１が知られている。特許文献１には、「シャント抵抗体と、前記シャント抵抗体の両端部にそれぞれ接合され、前記シャント抵抗体よりも低い抵抗値を有する材料から構成される第１および第２のバスバー基材と、を有するシャント抵抗付電流伝達部材と、前記シャント抵抗体に流れる電流を検出する電流検出回路が搭載された基板と、前記第１および第２のバスバー基材に設けられた穿孔にそれぞれ圧入された第１および第２の電流信号取出部材と、前記電流検出回路と前記第１および第２の電流信号取出部材とをそれぞれ接続して前記シャント抵抗体に流れる電流に応じた電流信号を前記電流検出回路へ伝達する第１および第２の電流信号伝達部材と、を備える。」と記載されている。（課題を解決するための手段参照） The following patent document 1 is known as a background art of the present invention. In Patent Document 1, "A shunt resistor, and first and second busbar base materials joined to both ends of the shunt resistor and made of a material having a resistance value lower than that of the shunt resistor. , a substrate on which a current detection circuit for detecting the current flowing through the shunt resistor is mounted, and a perforation provided in each of the first and second busbar base materials. The current detection circuit and the first and second current signal extraction members are connected to generate a current signal corresponding to the current flowing through the shunt resistor. and first and second current signal transmission members for transmission to the detection circuit." (See Means to Solve the Problem)

特開２０１８－２５４４６号公報JP 2018-25446 A

特許文献１では、２つのノックピンが基板に固定されているため、シャント抵抗の位置が確定してしまい、電池と組み合わせて電池パックを作成する際に、シャント抵抗の位置を調整したいといった要望に対して、対応しきれないことが課題であった。 In Patent Document 1, since the two dowel pins are fixed to the substrate, the position of the shunt resistor is determined. The problem was that we could not cope with the situation.

本発明の電池制御装置は、少なくとも複数の接続ピンが設けられたシャント抵抗と電気的に接続され、前記シャント抵抗を介して流れる電池電流を検出する電流検出回路と、前記電流検出回路が実装された基板と、前記基板に実装されたコネクタと、を備え、前記コネクタは、前記シャント抵抗の前記複数の接続ピンに対応して設けられた接続穴の組み合わせを、互いに異なる位置に複数有し、前記シャント抵抗は、前記コネクタの前記複数の接続穴の組み合わせのうち、いずれかの接続穴の組み合わせに前記複数の接続ピンがそれぞれ挿入されることで、前記電流検出回路と電気的に接続されることを特徴とする。 A battery control device of the present invention includes a current detection circuit electrically connected to a shunt resistor provided with at least a plurality of connection pins and detecting a battery current flowing through the shunt resistor, and the current detection circuit. and a connector mounted on the substrate, the connector having a plurality of combinations of connection holes provided corresponding to the plurality of connection pins of the shunt resistor at different positions, The shunt resistor is electrically connected to the current detection circuit by inserting the plurality of connection pins into one of the combinations of connection holes of the connector. It is characterized by

本発明によれば、電池と組み合わせて電池パックを作成する際にシャント抵抗の位置の調整が実現できる。 ADVANTAGE OF THE INVENTION According to this invention, adjustment of the position of a shunt resistance can be implement|achieved when producing a battery pack combining with a battery.

本発明の第１の実施形態に係る電池パックの構成図。1 is a configuration diagram of a battery pack according to a first embodiment of the present invention; FIG. 図１に示すシャント抵抗の一体化する前の構成図。FIG. 2 is a block diagram of the shunt resistors shown in FIG. 1 before integration; 図１に示すシャント抵抗の一体化した構成図。FIG. 2 is an integrated configuration diagram of the shunt resistors shown in FIG. 1 ; 図１に示すシャント抵抗と電流検出回路の接続状態の要部を示す構成図。FIG. 2 is a configuration diagram showing a main part of a connection state between a shunt resistor and a current detection circuit shown in FIG. 1; 図１に示すシャント抵抗の位置調整を示す構成図。FIG. 2 is a configuration diagram showing position adjustment of the shunt resistor shown in FIG. 1; 本発明の第２の実施形態に係るシャント抵抗と電流検出回路の接続状態の要部を示す構成図。FIG. 10 is a configuration diagram showing a main part of a connection state between a shunt resistor and a current detection circuit according to a second embodiment of the present invention;

（電池制御の構造）
まず本発明の実施形態に係る電池パックの構成について、図１を用いて説明する。図１は、本発明の一実施形態に係る電池制御装置を含む電池パックの構成図である。図１に示すように、電池パックは、電池制御装置１、シャント抵抗２、二次電池セル群３および４、総電圧信号５、温度センサ６ａおよび６ｂおよび６ｃおよび６ｄを備える。 (Battery control structure)
First, the configuration of a battery pack according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram of a battery pack including a battery control device according to one embodiment of the present invention. As shown in FIG. 1, the battery pack includes a battery control device 1, a shunt resistor 2, secondary battery cell groups 3 and 4, a total voltage signal 5, and temperature sensors 6a and 6b and 6c and 6d.

電池制御装置１は、後述する電流検出回路１１、コネクタ１２を含んで構成される。また、電池制御装置１は、車両から入力されるイグニッション信号（ＩＧＮ）、電源（ＶＢ）、グランド（ＧＮＤ）、通信線と接続されている。 The battery control device 1 includes a current detection circuit 11 and a connector 12, which will be described later. Also, the battery control device 1 is connected to an ignition signal (IGN) input from the vehicle, a power supply (VB), a ground (GND), and a communication line.

シャント抵抗２は、二次電池セル群３、４と直列に配置されている。電池制御装置１は、シャント抵抗２から電流の大きさと電流方向を示す電池電流情報を入手する。電池制御装置１は、シャント抵抗２から取得する電池電流情報と、二次電池セル群３、４の総電圧信号５から得る電圧の大きさや変動状況等の総電圧の情報と、二次電池セル群３、４に設けた温度センサ６ａ～６ｄから得る電池温度情報を基に、各二次電池セル群３、４の充放電特性を満たすよう常に監視している。 The shunt resistor 2 is arranged in series with the secondary battery cell groups 3 and 4 . The battery control device 1 obtains battery current information indicating the magnitude and direction of the current from the shunt resistor 2 . The battery control device 1 receives battery current information obtained from the shunt resistor 2, total voltage information obtained from the total voltage signal 5 of the secondary battery cell groups 3 and 4, such as voltage magnitude and variation, and secondary battery cell Based on the battery temperature information obtained from the temperature sensors 6a to 6d provided in the groups 3 and 4, the charge/discharge characteristics of the respective secondary battery cell groups 3 and 4 are constantly monitored.

次に、本発明の一実施形態に係るシャント抵抗２の構成について、図２、図３を用いて説明する。図２は、シャント抵抗２が一体化する前を示した分解図、図３は一体化した後を示した図である。シャント抵抗２は、電極７および８、シャント抵抗体９、接続ピン１０ａおよび１０ｂを備えて構成される。また接続ピン１０ａ、１０ｂは所定のピッチ間隔で配置される。 Next, the configuration of the shunt resistor 2 according to one embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is an exploded view showing the shunt resistor 2 before integration, and FIG. 3 is a view after integration. The shunt resistor 2 comprises electrodes 7 and 8, a shunt resistor 9, and connection pins 10a and 10b. Also, the connection pins 10a and 10b are arranged at predetermined pitch intervals.

（第１の実施形態）
本発明の一実施形態に係るシャント抵抗２と電流検出回路１１の接続について、図４、図５を用いて説明する。
図４は、一般的なシャント抵抗２と電流検出回路１１の接続についての説明である。コネクタ１２は接続穴を備え、電池制御装置１の基板上に実装された電流検出回路１１の入力側に配置される。このコネクタ１２の接続穴に、シャント抵抗２の接続ピン１０ａ、１０ｂを挿入することで、電流検出回路１１は、シャント抵抗体９の両端の電圧を、シャント抵抗２に流れる電流に応じた電流信号として、接続ピン１０ａ、１０ｂから受け取る。それにより、二次電池セル群２、３に流れる電池電流を検出する。なお、コネクタ１２はシャント抵抗接続専用でも、他の入出力信号との兼用のどちらでもよい。 (First embodiment)
Connection between the shunt resistor 2 and the current detection circuit 11 according to one embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG.
FIG. 4 is an explanation of connection between a general shunt resistor 2 and a current detection circuit 11. As shown in FIG. The connector 12 has a connection hole and is arranged on the input side of the current detection circuit 11 mounted on the board of the battery control device 1 . By inserting the connection pins 10 a and 10 b of the shunt resistor 2 into the connection holes of the connector 12 , the current detection circuit 11 detects the voltage across the shunt resistor 9 as a current signal corresponding to the current flowing through the shunt resistor 2 . , from the connection pins 10a, 10b. Thereby, the battery current flowing through the secondary battery cell groups 2 and 3 is detected. The connector 12 may be used exclusively for connecting the shunt resistor or may be used for other input/output signals.

図５は、本発明の一実施形態に係るシャント抵抗２の位置調整を示す図である。コネクタ１２には、シャント抵抗２の接続ピン１０ａ、１０ｂを挿入するために、接続ピン１０ａ、１０ｂと同じ所定のピッチ間隔を持った接続穴の組み合わせが複数設けられている。シャント抵抗２と電流検出回路１１が電気的に接続される。この複数の接続穴の組み合わせのうち、いずれかの接続穴の組み合わせに接続ピン１０ａ、１０ｂがそれぞれ挿入されることで、例えば、二次電池セル群３、４周囲の構造や電池制御装置１以外の部品配置により、シャント抵抗２と電流検出回路１１を設計当初の接続穴の位置では接続ができない場合でも、コネクタ１２の他の接続穴を経由して接続することができる。これにより、電池パック周りの全体構造が作成された後でも、電池制御装置１の構造を変更することなく、シャント抵抗２と電流検出回路１１を接続することが可能となる。 FIG. 5 is a diagram showing position adjustment of the shunt resistor 2 according to one embodiment of the present invention. In order to insert the connection pins 10a and 10b of the shunt resistor 2, the connector 12 is provided with a plurality of combinations of connection holes having the same predetermined pitch as the connection pins 10a and 10b. Shunt resistor 2 and current detection circuit 11 are electrically connected. By inserting the connecting pins 10a and 10b into one of the combinations of the plurality of connecting holes, for example, the structure around the secondary battery cell groups 3 and 4 and other than the battery control device 1 2, the shunt resistor 2 and the current detection circuit 11 can be connected via another connection hole of the connector 12 even if they cannot be connected at the position of the connection hole at the beginning of design. This makes it possible to connect the shunt resistor 2 and the current detection circuit 11 without changing the structure of the battery control device 1 even after the overall structure around the battery pack is created.

また、コネクタ１２の各接続穴は、シャント抵抗２の接続ピン１０ａ、１０ｂが完全には固定されない状態で、各接続穴に設けられた端子との電気的な接続が維持可能な構造を有している。こうした構造により、シャント抵抗２が車両の振動等による応力を直接受けないようになっている。すなわち、コネクタ１２の上記構造は、シャント抵抗２にかかる応力を緩和する応力緩和機構として機能する。 Each connection hole of the connector 12 has a structure in which electrical connection with the terminal provided in each connection hole can be maintained in a state in which the connection pins 10a and 10b of the shunt resistor 2 are not completely fixed. ing. Such a structure prevents the shunt resistor 2 from directly receiving stress due to vehicle vibration or the like. That is, the above structure of the connector 12 functions as a stress relief mechanism that relieves stress applied to the shunt resistor 2 .

以上説明した本発明の第１の実施形態によれば、以下の作用効果を奏する。 According to the first embodiment of the present invention described above, the following effects are obtained.

（１）電池制御装置１は、少なくとも複数の接続ピン１０ａ、１０ｂが設けられたシャント抵抗２と電気的に接続され、シャント抵抗２を介して流れる電池電流を検出する電流検出回路１１と、電流検出回路１１が実装された基板と、基板に実装されたコネクタ１２と、を備える。コネクタ１２は、シャント抵抗２の複数の接続ピン１０ａ、１０ｂに対応して設けられた接続穴の組み合わせを、互いに異なる位置に複数有する。シャント抵抗２は、コネクタ１２の複数の接続穴の組み合わせのうち、いずれかの接続穴の組み合わせに複数の接続ピン１０ａ、１０ｂがそれぞれ挿入されることで、電流検出回路１１と電気的に接続される。このようにしたので、電池制御部分以外の構造配置の影響を受けることなく、コネクタ１２を通して、シャント抵抗２と電流検出回路１１を接続できる。 (1) The battery control device 1 is electrically connected to a shunt resistor 2 provided with at least a plurality of connection pins 10a and 10b. A board on which a detection circuit 11 is mounted and a connector 12 mounted on the board are provided. The connector 12 has a plurality of combinations of connection holes provided corresponding to the plurality of connection pins 10a and 10b of the shunt resistor 2 at different positions. The shunt resistor 2 is electrically connected to the current detection circuit 11 by inserting the plurality of connection pins 10 a and 10 b into one of the combinations of connection holes of the connector 12 . be. With this configuration, the shunt resistor 2 and the current detection circuit 11 can be connected through the connector 12 without being affected by the structural arrangement other than the battery control portion.

（２）電池制御装置１は、複数の接続ピン１０ａ、１０ｂが所定のピッチ間隔で配置されており、コネクタ１２の接続穴の各組み合わせは、所定のピッチ間隔でコネクタ１２にそれぞれ設けられている。このようにしたので、シャント抵抗２と電流検出回路１１を所望の位置で接続ができない場合でも、他の穴を経由して接続することができる。 (2) In the battery control device 1, a plurality of connection pins 10a and 10b are arranged at predetermined pitch intervals, and each combination of connection holes of the connector 12 is provided in the connector 12 at predetermined pitch intervals. . With this configuration, even if the shunt resistor 2 and the current detection circuit 11 cannot be connected at a desired position, they can be connected via another hole.

（３）電池制御装置１は、コネクタ１２に応力緩和機構を備える。このようにしたので、シャント抵抗２が車両の振動等による応力を直接受けないようになっている。 (3) The battery control device 1 has a stress relaxation mechanism in the connector 12 . With this configuration, the shunt resistor 2 is not directly subjected to stress due to vehicle vibration or the like.

（第２の実施形態）
図６は、本発明の第２の実施形態に係るシャント抵抗２Ａと電流検出回路１１の接続を示す図である。なお、図１～図５と同一符号は同一部品を示す。本実施形態に係るシャント抵抗２Ａは、例えば、実施形態１のように１つのシャント抵抗体９ではなく、２つのシャント抵抗体９ａ、９ｂを直列に接続して構成されている。この場合、シャント抵抗体９ａの両端電流、９ｂの両端電流、９ａ＋９ｂの両端電流をそれぞれ測定するために接続ピンの数が３つ必要となる。そこで、シャント抵抗２Ａには、３つの接続ピン１０ａ、１０ｂ、１０ｃを設ける。またそれに伴い、接続ピン１０ａ、１０ｂ、１０ｃを所定のピッチ間隔でそれぞれ配置し、これらの間に２つのシャント抵抗体９ａ、９ｂを接続する。この場合のシャント抵抗体９ａ、９ｂそれぞれの抵抗値は同一でも、相違しても何れでもよい。 (Second embodiment)
FIG. 6 is a diagram showing connections between the shunt resistor 2A and the current detection circuit 11 according to the second embodiment of the present invention. 1 to 5 denote the same parts. A shunt resistor 2A according to the present embodiment, for example, is configured by connecting two shunt resistors 9a and 9b in series instead of one shunt resistor 9 as in the first embodiment. In this case, three connection pins are required to measure the current across the shunt resistor 9a, the current across 9b, and the current across 9a+9b. Therefore, the shunt resistor 2A is provided with three connection pins 10a, 10b, and 10c. Along with this, connection pins 10a, 10b, and 10c are arranged at predetermined pitch intervals, and two shunt resistors 9a and 9b are connected between them. In this case, the resistance values of the shunt resistors 9a and 9b may be the same or different.

電池制御装置１の基板上には、コネクタ１２Ａが実装されている。コネクタ１２Ａには、図５で説明した第１の実施形態に係るコネクタ１２と同様に、シャント抵抗２Ａの接続ピン１０ａ、１０ｂ、１０ｃを挿入するために、接続ピン１０ａ、１０ｂ、１０ｃと同じ所定のピッチ間隔を持った接続穴の組み合わせが複数設けられている。この複数の接続穴の組み合わせのうち、いずれかの接続穴の組み合わせに接続ピン１０ａ、１０ｂ、１０ｃがそれぞれ挿入されることで、シャント抵抗２Ａがコネクタ１２Ａを介して電流検出回路１１と電気的に接続される。これにより、電池制御装置１の構造を変更することなく、シャント抵抗２Ａと電流検出回路１１を接続することが可能となる。また本実施形態では接続ピンが３つとなっているが、３つ以上の接続ピン数の場合も本願発明は適用される。 A connector 12A is mounted on the board of the battery control device 1 . In the connector 12A, as in the connector 12 according to the first embodiment described in FIG. A plurality of combinations of connection holes having a pitch interval of . By inserting the connection pins 10a, 10b, and 10c into any one of the combinations of the plurality of connection holes, the shunt resistor 2A is electrically connected to the current detection circuit 11 through the connector 12A. Connected. Thereby, the shunt resistor 2A and the current detection circuit 11 can be connected without changing the structure of the battery control device 1 . In addition, although the number of connection pins is three in this embodiment, the present invention is also applicable to the case where the number of connection pins is three or more.

以上説明した本発明の第２の実施形態によれば、第１の実施形態と同様の作用効果を奏する。 According to the second embodiment of the present invention described above, the same effects as those of the first embodiment are obtained.

以上説明した各実施形態や各種変形例はあくまで一例であり、発明の特徴が損なわれない限り、本発明はこれらの内容に限定されるものではない。また、上記では種々の実施形態や変形例を説明したが、本発明はこれらの内容に限定されるものではない。本発明の技術的思想の範囲内で考えられるその他の態様も本発明の範囲内に含まれる。 The embodiments and various modifications described above are merely examples, and the present invention is not limited to these contents as long as the features of the invention are not impaired. Moreover, although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

１ 電池制御装置
２、２Ａ シャント抵抗
３、４ 二次電池セル群
５ 総電圧信号
６ａ、６ｂ、６ｃ、６ｄ 温度センサ
７、８ 電極
９、９ａ、９ｂ シャント抵抗体
１０ａ、１０ｂ、１０ｃ 接続ピン
１１ 電流検出回路
１２、１２Ａ コネクタ
1 battery control device 2, 2A shunt resistors 3, 4 secondary battery cell group 5 total voltage signals 6a, 6b, 6c, 6d temperature sensors 7, 8 electrodes 9, 9a, 9b shunt resistors 10a, 10b, 10c connection pin 11 Current detection circuit 12, 12A Connector

Claims (4)

少なくとも複数の接続ピンが設けられたシャント抵抗と電気的に接続され、前記シャント抵抗を介して流れる電池電流を検出する電流検出回路と、
前記電流検出回路が実装された基板と、
前記基板に実装されたコネクタと、を備え、
前記コネクタは、前記シャント抵抗の前記複数の接続ピンに対応して設けられた接続穴の組み合わせを、互いに異なる位置に複数有し、
前記複数の接続ピンは、所定のピッチ間隔で配置されており、かつ前記複数の接続穴の組み合わせごとに共通の前記電流検出回路の端子と電気的に接続され、
前記複数の接続穴の組み合わせは、前記所定のピッチ間隔で前記コネクタにそれぞれ設けられ、
前記シャント抵抗は、前記コネクタの前記複数の接続穴の組み合わせのうち、いずれかの前記接続穴の組み合わせに前記複数の接続ピンがそれぞれ挿入されることで、前記シャント抵抗の前記コネクタに対する接続位置が調整され、かつ前記接続穴に挿入された前記複数の接続ピンと挿入されたそれぞれの前記接続ピンに対応する前記電流検出回路の各端子とが電気的に接続される
ことを特徴とする電池制御装置。 a current detection circuit electrically connected to a shunt resistor provided with at least a plurality of connection pins and detecting a battery current flowing through the shunt resistor;
a substrate on which the current detection circuit is mounted;
a connector mounted on the substrate;
the connector has a plurality of combinations of connection holes provided corresponding to the plurality of connection pins of the shunt resistor at different positions;
the plurality of connection pins are arranged at predetermined pitch intervals and electrically connected to common terminals of the current detection circuit for each combination of the plurality of connection holes;
the combination of the plurality of connection holes are provided in the connector at the predetermined pitch intervals,
The connection position of the shunt resistor with respect to the connector is changed by inserting the plurality of connection pins into one of the combinations of the plurality of connection holes of the connector . The battery control device , wherein the plurality of connection pins adjusted and inserted into the connection holes are electrically connected to each terminal of the current detection circuit corresponding to each of the inserted connection pins . . 請求項１に記載の電池制御装置において、前記複数の接続ピンは３つ以上であることを特徴とする電池制御装置。 2. The battery control device according to claim 1, wherein the plurality of connection pins is three or more. 請求項１に記載の電池制御装置において、前記コネクタは、いずれかの前記接続穴の組み合わせに前記複数の接続ピンがそれぞれ挿入されたときに、前記電流検出回路との電気的な接続が維持可能な範囲で前記シャント抵抗を完全に固定しないことで、前記シャント抵抗にかかる応力を緩和する応力緩和機構を備えることを特徴とする電池制御装置。 2. The battery control device according to claim 1 , wherein the connector is capable of maintaining electrical connection with the current detection circuit when the plurality of connection pins are inserted into any combination of the connection holes. A battery control device, comprising a stress relaxation mechanism that relaxes stress applied to the shunt resistor by not completely fixing the shunt resistor within a certain range . 請求項１または２に記載の前記電池制御装置を備え、充放電が制御される二次電池を備えることを特徴とする電池パック。 A battery pack comprising the battery control device according to claim 1 or 2 , and comprising a secondary battery whose charging and discharging is controlled.
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JP2015021815A (en) 2013-07-18 2015-02-02 矢崎総業株式会社 Shunt resistance type current sensor
JP2018189384A (en) 2017-04-28 2018-11-29 株式会社Ｇｓユアサ Current detection device, management device, and battery for starting engine
JP2019040799A (en) 2017-08-28 2019-03-14 住鉱テック株式会社 Floating connector

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JPH04315401A (en) * 1991-04-15 1992-11-06 Fuji Electric Co Ltd Device for connecting for resistor to printed board

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JP2015021815A (en) 2013-07-18 2015-02-02 矢崎総業株式会社 Shunt resistance type current sensor
JP2018189384A (en) 2017-04-28 2018-11-29 株式会社Ｇｓユアサ Current detection device, management device, and battery for starting engine
JP2019040799A (en) 2017-08-28 2019-03-14 住鉱テック株式会社 Floating connector

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