JP2021034266A - Battery voltage control device and electric vehicle - Google Patents

Battery voltage control device and electric vehicle Download PDF

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JP2021034266A
JP2021034266A JP2019154436A JP2019154436A JP2021034266A JP 2021034266 A JP2021034266 A JP 2021034266A JP 2019154436 A JP2019154436 A JP 2019154436A JP 2019154436 A JP2019154436 A JP 2019154436A JP 2021034266 A JP2021034266 A JP 2021034266A
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optical signal
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child
transmission unit
control device
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JP7075914B2 (en
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和彦 山口
Kazuhiko Yamaguchi
和彦 山口
智史 上野
Tomohito Ueno
智史 上野
勝太 久保
Shota Kubo
勝太 久保
壮一 森井
Soichi Morii
壮一 森井
章一 瀧本
Shoichi Takimoto
章一 瀧本
有希 青島
Yuki Aoshima
有希 青島
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Honda Motor Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

To provide a battery voltage control device and an electric vehicle that can easily cope with an increase or decrease in the number of cell laminates.SOLUTION: A battery voltage control device 12 includes a plurality of child boards 20 provided for each of a plurality of cell laminates 11A, a parent board 30 capable of exchanging optical signals with the plurality of child boards 20, an optical signal transmission unit 40 that transmits optical signals, and a housing 50 accommodating the plurality of child boards 20, the parent board 30, and an optical signal transmission unit 40. The parent board 30 and the plurality of child boards 20 are separate bodies, and are configured to be communicable by optical signals.SELECTED DRAWING: Figure 2

Description

本発明は、バッテリ電圧制御装置及び電動車両に関する。 The present invention relates to a battery voltage control device and an electric vehicle.

電池状態監視ユニットと、複数のセル積層体ごとに設けられ、セル積層体の状態情報を電池状態監視ユニットに送信する複数の電池状態通知ユニットと、を備える車両用の電池状態監視システムが知られている（例えば、特許文献１参照）。 A battery condition monitoring system for a vehicle including a battery condition monitoring unit and a plurality of battery condition notification units provided for each of a plurality of cell stacks and transmitting the state information of the cell stacks to the battery condition monitoring unit is known. (See, for example, Patent Document 1).

特許第５７３９２４４号公報Japanese Patent No. 5739244

しかしながら、特許文献１に示される電池状態監視システムのように、電池状態監視ユニットと電池状態通知ユニットをハーネスやコネクタを介して接続するものでは、車両に応じてセル積層体が増減されると、ハーネスやコネクタの物理的な制約により、ハードウェアの作り直しが発生する虞があった。 However, in a system in which a battery status monitoring unit and a battery status notification unit are connected via a harness or a connector as in the battery status monitoring system shown in Patent Document 1, when the number of cell laminates is increased or decreased depending on the vehicle, Due to physical restrictions on the harness and connector, there was a risk that the hardware would have to be rebuilt.

本発明は、セル積層体の増減に容易に対応できるバッテリ電圧制御装置及び電動車両を提供する。 The present invention provides a battery voltage control device and an electric vehicle that can easily cope with an increase or decrease in a cell laminate.

本発明は、
複数のセル積層体の各セルの電圧を検出するバッテリ電圧制御装置であって、
前記複数のセル積層体ごとに設けられる複数の子基板と、
前記複数の子基板と光信号を授受可能な親基板と、
前記光信号を伝送する光信号伝送部と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣと、前記光信号を送信する子光送信部と、前記光信号を受信する子光受信部と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵと、前記光信号を送信する親光送信部と、前記光信号を受信する親光受信部と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される。 The present invention
A battery voltage control device that detects the voltage of each cell of a plurality of cell stacks.
A plurality of child substrates provided for each of the plurality of cell laminates,
The plurality of child boards, a parent board capable of exchanging optical signals, and
An optical signal transmission unit that transmits the optical signal,
The plurality of child boards, the parent board, and a housing for accommodating the optical signal transmission unit are provided.
Each child board
Each includes a voltage detection IC, a child light transmitting unit that transmits the optical signal, and a child light receiving unit that receives the optical signal.
The parent substrate is
A CPU that controls the plurality of child boards, a parent light transmitting unit that transmits the optical signal, and a parent light receiving unit that receives the optical signal are provided.
The parent substrate and the plurality of child substrates are separate bodies, and are configured to be communicable by the optical signal.

また、本発明は、
複数のセル積層体を収容した第１バッテリパックと、
前記複数のセル積層体の各セルの電圧を検出するバッテリ電圧制御装置と、を備える電動車両であって、
前記バッテリ電圧制御装置は、
前記第１バッテリパックの前記複数のセル積層体ごとに設けられる複数の子基板と、
前記複数の子基板と光信号を授受可能な親基板と、
前記光信号を伝送する光信号伝送部と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣと、前記光信号を送信する子光送信部と、前記光信号を受信する子光受信部と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵと、前記光信号を送信する親光送信部と、前記光信号を受信する親光受信部と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される。 In addition, the present invention
A first battery pack containing a plurality of cell laminates and
An electric vehicle including a battery voltage control device that detects a voltage of each cell of the plurality of cell laminates.
The battery voltage control device is
A plurality of child substrates provided for each of the plurality of cell laminates of the first battery pack, and
The plurality of child boards, a parent board capable of exchanging optical signals, and
An optical signal transmission unit that transmits the optical signal,
The plurality of child boards, the parent board, and a housing for accommodating the optical signal transmission unit are provided.
Each child board
Each includes a voltage detection IC, a child light transmitting unit that transmits the optical signal, and a child light receiving unit that receives the optical signal.
The parent substrate is
A CPU that controls the plurality of child boards, a parent light transmitting unit that transmits the optical signal, and a parent light receiving unit that receives the optical signal are provided.
The parent substrate and the plurality of child substrates are separate bodies, and are configured to be communicable by the optical signal.

本発明によれば、セル積層体の増減に容易に対応できるバッテリ電圧制御装置及び電動車両を提供することができる。 According to the present invention, it is possible to provide a battery voltage control device and an electric vehicle that can easily cope with an increase or decrease in a cell laminate.

本発明の第１実施形態の電動車両の内部を示す概略側面図である。It is a schematic side view which shows the inside of the electric vehicle of 1st Embodiment of this invention. 第１バッテリパックの内部構成を示す模式図である。It is a schematic diagram which shows the internal structure of the 1st battery pack. バッテリ電圧制御装置の筐体内部を示す模式図である。It is a schematic diagram which shows the inside of the housing of the battery voltage control device. 第１実施形態の第１変形例のバッテリ電圧制御装置の内部構成を示す平面図である。It is a top view which shows the internal structure of the battery voltage control device of the 1st modification of 1st Embodiment. 図４ＡのＡ−Ａ断面図である。FIG. 4A is a cross-sectional view taken along the line AA of FIG. 4A. 図４ＡのＢ−Ｂ断面図である。FIG. 4A is a cross-sectional view taken along the line BB of FIG. 4A. 第１実施形態の第２変形例のバッテリ電圧制御装置の内部構成を示す平面図である。It is a top view which shows the internal structure of the battery voltage control device of the 2nd modification of 1st Embodiment. 図５ＡのＣ−Ｃ断面図である。FIG. 5C is a cross-sectional view taken along the line CC of FIG. 5A. 本発明の第２実施形態の電動車両の内部を示す概略側面図である。It is a schematic side view which shows the inside of the electric vehicle of 2nd Embodiment of this invention. 第１〜第３バッテリパックの内部構成及び光信号経路を示す模式図である。It is a schematic diagram which shows the internal structure and the optical signal path of the 1st to 3rd battery pack. 図７の光信号経路をより詳しく示す模式図である。It is a schematic diagram which shows the optical signal path of FIG. 7 in more detail.

以下、本発明の各実施形態を図面に基づいて説明する。なお、図面は符号の向きに見るものとし、以下の説明において、前後、左右、上下は、車両の操縦者から見た方向に従い記載し、また、図面に車両の前方をＦｒ、後方をＲｒ、左側をＬ、右側をＲ、上方をＵ、下方をＤ、として示す。 Hereinafter, each embodiment of the present invention will be described with reference to the drawings. In the following description, the drawings shall be viewed in the direction of the reference numerals, and the front / rear, left / right, and up / down shall be described according to the direction viewed from the driver of the vehicle. The left side is shown as L, the right side is shown as R, the upper side is shown as U, and the lower side is shown as D.

＜第１実施形態＞
［電動車両］
図１に示すように、本発明の一実施形態の電動車両１は、フロアパネル２とダッシュパネル３とにより車室４とその前方のフロントルーム５とに区画形成されている。車室４には、前部座席６及び後部座席７が設けられ、後部座席７の後方は荷室８となる。フロントルーム５には、駆動装置ユニット９が設けられている。駆動装置ユニット９は、左右の前輪ＦＷを駆動する。つまり、この電動車両１は、左右の前輪ＦＷを駆動輪とし、左右の後輪ＲＷを従動輪としている。 <First Embodiment>
[Electric vehicle]
As shown in FIG. 1, the electric vehicle 1 according to the embodiment of the present invention is divided into a vehicle interior 4 and a front room 5 in front of the floor panel 2 and the dash panel 3. The passenger compartment 4 is provided with a front seat 6 and a rear seat 7, and a luggage compartment 8 is behind the rear seat 7. A drive unit 9 is provided in the front room 5. The drive unit 9 drives the left and right front wheel FWs. That is, in this electric vehicle 1, the left and right front wheels FW are used as driving wheels, and the left and right rear wheel RWs are used as trailing wheels.

第１実施形態の電動車両１の車室４の下方には、バッテリパック１０Ａが配置されている。具体的には、前部座席６の下方にバッテリパック１０Ａが配置されている。 A battery pack 10A is arranged below the passenger compartment 4 of the electric vehicle 1 of the first embodiment. Specifically, the battery pack 10A is arranged below the front seat 6.

駆動装置ユニット９は、駆動源である不図示のモータと、モータを駆動制御する不図示のＰＣＵ（Ｐｏｗｅｒ Ｃｏｎｔｒｏｌ Ｕｎｉｔ）と、を備える。ＰＣＵは、バッテリパック１０Ａから供給される電力を変換し、変換した電力でモータを駆動させる。 The drive device unit 9 includes a motor (not shown) that is a drive source, and a PCU (Power Control Unit) (not shown) that drives and controls the motor. The PCU converts the electric power supplied from the battery pack 10A and drives the motor with the converted electric power.

［バッテリパック］
図２に示すように、バッテリパック１０Ａは、複数のセル１１１を積層して構成される複数のセル積層体１１Ａと、複数のセル積層体１１Ａの各セル１１１の電圧を検出するバッテリ電圧制御装置１２と、複数のセル積層体１１Ａ及びバッテリ電圧制御装置１２を収容するバッテリケース１３と、を備える。 [Battery pack]
As shown in FIG. 2, the battery pack 10A is a battery voltage control device that detects the voltage of a plurality of cell laminates 11A formed by stacking a plurality of cells 111 and each cell 111 of the plurality of cell laminates 11A. A battery case 13 for accommodating a plurality of cell laminates 11A and a battery voltage control device 12 is provided.

セル積層体１１Ａの各セル１１１には、電圧検出線１１２が接続されている。各セル１１１に接続された複数の電圧検出線１１２は、セル積層体１１Ａ単位で結束され、コネクタ１１３を介してバッテリ電圧制御装置１２に接続される。 A voltage detection line 112 is connected to each cell 111 of the cell stack 11A. The plurality of voltage detection lines 112 connected to each cell 111 are bundled in units of the cell laminate 11A and connected to the battery voltage control device 12 via the connector 113.

［バッテリ電圧制御装置］
図２及び図３に示すように、バッテリ電圧制御装置１２は、複数のセル積層体１１Ａごとに設けられる複数の子基板２０と、複数の子基板２０と光信号を授受可能な親基板３０と、光信号を伝送する光信号伝送部４０と、複数の子基板２０、親基板３０、及び光信号伝送部４０を収容する筐体５０と、を備える。親基板３０と複数の子基板２０は、別体であり、光信号によって通信可能に構成される。 [Battery voltage controller]
As shown in FIGS. 2 and 3, the battery voltage control device 12 includes a plurality of child substrates 20 provided for each of the plurality of cell laminates 11A, a plurality of child substrates 20, and a parent substrate 30 capable of transmitting and receiving optical signals. , An optical signal transmission unit 40 for transmitting an optical signal, and a housing 50 for accommodating a plurality of child substrates 20, a parent substrate 30, and an optical signal transmission unit 40. The parent substrate 30 and the plurality of child substrates 20 are separate bodies, and are configured to be communicable by optical signals.

各子基板２０は、それぞれ、セル電圧入力部２１と、電圧検出用ＩＣ２２と、光信号を送信する子光送信部２３と、光信号を受信する子光受信部２４と、を備える。なお、各子基板２０は、さらにバッテリ温度検出手段などを備えてもよい。 Each child substrate 20 includes a cell voltage input unit 21, a voltage detection IC 22, a child light transmitting unit 23 for transmitting an optical signal, and a child light receiving unit 24 for receiving an optical signal. In addition, each child substrate 20 may further include a battery temperature detecting means and the like.

セル電圧入力部２１は、コネクタ１１３及び複数の電圧検出線１１２を介してセル積層体１１Ａの各セル１１１に接続され、各セル１１１の電圧を入力する。 The cell voltage input unit 21 is connected to each cell 111 of the cell stack 11A via the connector 113 and the plurality of voltage detection lines 112, and inputs the voltage of each cell 111.

電圧検出用ＩＣ２２は、子光受信部２４からの要求信号に応じて、セル電圧入力部２１が入力した各セル１１１のセル電圧を検出し、検出した複数のセル電圧をセル電圧検出信号として子光送信部２３に出力する。 The voltage detection IC 22 detects the cell voltage of each cell 111 input by the cell voltage input unit 21 in response to the request signal from the child light receiving unit 24, and uses the detected plurality of cell voltages as the cell voltage detection signal as a child. Output to the optical transmitter 23.

子光送信部２３は、面発光ダイオード、面発光レーザなどの発光素子を用いて光信号の送信を行う光信号送信モジュールであり、電圧検出用ＩＣ２２から出力されたセル電圧検出信号を光信号に変換し、親基板３０に送信する。 The child light transmission unit 23 is an optical signal transmission module that transmits an optical signal using a light emitting element such as a surface light emitting diode or a surface emitting laser, and converts a cell voltage detection signal output from the voltage detection IC 22 into an optical signal. It is converted and transmitted to the parent substrate 30.

子光受信部２４は、フォトダイオード、フォトトランジスタなど受光素子を用いて光信号の受信を行う光信号受信モジュールであり、親基板３０から光信号として送信される要求信号を受信し、該要求信号を電圧検出用ＩＣ２２に出力する。なお、親基板３０から送信される要求信号には、送信先（どの子基板２０宛なのか）を指定する送信先指定情報が含まれ、子基板２０側では、送信先指定情報に基づいて自分宛ての要求信号であるか否かを判断できる。 The child light receiving unit 24 is an optical signal receiving module that receives an optical signal using a light receiving element such as a photodiode or a phototransistor, receives a request signal transmitted as an optical signal from the parent substrate 30, and receives the request signal. Is output to the voltage detection IC 22. The request signal transmitted from the parent board 30 includes destination designation information for designating the destination (which child board 20 is addressed to), and the child board 20 side is based on the destination designation information. It can be determined whether or not the signal is a request signal addressed to the user.

親基板３０は、複数の子基板２０を制御するＣＰＵ３１と、光信号を電気信号に変換するとともに電気信号を光信号に変換する変換回路ＩＣ３５と、光信号を送信する親光送信部３２と、光信号を受信する親光受信部３３と、を備える。なお、親基板３０は、さらに電流検知手段、バッテリ冷却制御手段、配電制御手段、地絡検知手段、バッテリ温度検知手段などを備えてもよい。 The parent board 30 includes a CPU 31 that controls a plurality of child boards 20, a conversion circuit IC 35 that converts an optical signal into an electric signal and an electric signal into an optical signal, and a parent light transmission unit 32 that transmits an optical signal. A parent light receiving unit 33 for receiving an optical signal is provided. The parent substrate 30 may further include a current detecting means, a battery cooling control means, a power distribution control means, a ground fault detecting means, a battery temperature detecting means, and the like.

ＣＰＵ３１は、マイコンなどを用いて構成される制御モジュールであり、親光送信部３２を介して複数の子基板２０にセル電圧検出信号を要求するとともに、親光受信部３３を介して複数の子基板２０からセル電圧検出信号を受信する。 The CPU 31 is a control module configured by using a microcomputer or the like, requests cell voltage detection signals from a plurality of child boards 20 via a parent light transmitting unit 32, and requests a cell voltage detection signal from a plurality of child boards 20 via a parent light receiving unit 33. The cell voltage detection signal is received from the substrate 20.

親光送信部３２は、面発光ダイオード、は面発光レーザなどの発光素子を用いて光信号の送信を行う光信号送信モジュールであり、ＣＰＵ３１からの要求に基づいて変換回路ＩＣ３５で生成された光信号を複数の子基板２０に送信する。 The close light transmission unit 32 is an optical signal transmission module that transmits an optical signal using a surface light emitting diode, or a light emitting element such as a surface light emitting laser, and the light generated by the conversion circuit IC35 based on a request from the CPU 31. The signal is transmitted to the plurality of child boards 20.

親光受信部３３は、フォトダイオード、フォトトランジスタなどの受光素子を用いて光信号の受信を行う光信号受信モジュールであり、複数の子基板２０から光信号として送信されるセル電圧検出信号を受信し、変換回路ＩＣ３５を介してＣＰＵ３１に出力する。 The close light receiving unit 33 is an optical signal receiving module that receives an optical signal using a light receiving element such as a photodiode or a phototransistor, and receives a cell voltage detection signal transmitted as an optical signal from a plurality of child substrates 20. Then, it is output to the CPU 31 via the conversion circuit IC35.

このようなバッテリ電圧制御装置１２によれば、ＣＰＵ３１を搭載した親基板３０と電圧監視機能を有する子基板２０とを分離し、これらの基板２０、３０間で光信号を介して電圧情報を授受するので、電動車両１に応じてセル積層体１１Ａの数が増減したときであっても、親基板３０と子基板２０との物理的な接続作業が不要であって、子基板２０の数を変更するだけで容易に対応することができる。 According to such a battery voltage control device 12, the parent board 30 on which the CPU 31 is mounted and the child board 20 having a voltage monitoring function are separated, and voltage information is exchanged between these boards 20 and 30 via an optical signal. Therefore, even when the number of cell laminates 11A increases or decreases according to the electric vehicle 1, the physical connection work between the parent substrate 30 and the child substrate 20 is unnecessary, and the number of child substrates 20 can be increased. It can be easily dealt with just by changing it.

光信号伝送部４０は、光反射板（金属板、誘電体ミラーなど）や導光板を用いて構成される。光反射板を用いて光信号伝送部４０を構成する場合は、図３に示すように、親基板３０（親光送信部３２及び親光受信部３３の配置面）及び複数の子基板２０（子光送信部２３及び子光受信部２４の配置面）と、光信号伝送部４０とが、筐体５０の内部で対向して配置されることが望ましい。このようにすると、光信号の伝達経路がシンプルになり、スペース効率を向上させることができる。 The optical signal transmission unit 40 is configured by using a light reflector (metal plate, dielectric mirror, etc.) or a light guide plate. When the optical signal transmission unit 40 is configured by using an optical reflector, as shown in FIG. 3, a parent substrate 30 (arrangement surface of the parent light transmitting unit 32 and the parent light receiving unit 33) and a plurality of child substrates 20 (as shown in FIG. 3). It is desirable that the child light transmitting unit 23 and the child light receiving unit 24 (arrangement surface) and the optical signal transmitting unit 40 are arranged so as to face each other inside the housing 50. In this way, the transmission path of the optical signal is simplified and space efficiency can be improved.

図３に示すように、筐体５０は、一端部に開口部５１１が設けられるとともに、一端部と反対側の他端部に底部５１２が設けられた筒状の筐体本体５１と、開口部５１１を封止する筐体カバー５２と、を備える。 As shown in FIG. 3, the housing 50 has a tubular housing body 51 having an opening 511 at one end and a bottom 512 at the other end opposite to one end, and an opening. A housing cover 52 for sealing the 511 is provided.

親基板３０及び複数の子基板２０は、筐体本体５１の底部５１２側に配置され、光信号伝送部４０は、筐体カバー５２側に配置されている。このような配置構成によれば、親基板３０及び複数の子基板２０と、光信号伝送部４０とを別々に組み付けられるので、組付け性を向上させることができる。なお、筐体カバー５２側に親基板３０及び複数の子基板２０を配置し、筐体本体５１の底部５１２側に光信号伝送部４０を配置してもよい。 The parent board 30 and the plurality of child boards 20 are arranged on the bottom 512 side of the housing body 51, and the optical signal transmission unit 40 is arranged on the housing cover 52 side. According to such an arrangement configuration, the parent substrate 30, the plurality of child substrates 20, and the optical signal transmission unit 40 can be assembled separately, so that the assembling property can be improved. The parent substrate 30 and the plurality of child substrates 20 may be arranged on the housing cover 52 side, and the optical signal transmission unit 40 may be arranged on the bottom 512 side of the housing main body 51.

［第１変形例のバッテリ電圧制御装置］
つぎに、第１変形例のバッテリ電圧制御装置１２について、図４Ａ，図４Ｂ及び図４Ｃを参照して説明する。 [Battery voltage control device of the first modification]
Next, the battery voltage control device 12 of the first modification will be described with reference to FIGS. 4A, 4B, and 4C.

図４Ａ，図４Ｂ及び図４Ｃに示すように、第１変形例のバッテリ電圧制御装置１２は、筐体５０の構造や親基板３０及び複数の子基板２０の配置構成が前記実施形態と相違している。具体的に説明すると、親基板３０及び複数の子基板２０は、平面視で重なり合うように上下方向に並べて配置されている。なお、親基板３０及び複数の子基板２０が並ぶ方向は、上下方向に限定されず、前後方向、左右方向などであってもよいが、理解を容易にするために、以下の説明では上下方向とする。 As shown in FIGS. 4A, 4B and 4C, the battery voltage control device 12 of the first modification differs from the above embodiment in the structure of the housing 50 and the arrangement configuration of the parent board 30 and the plurality of child boards 20. ing. Specifically, the parent substrate 30 and the plurality of child substrates 20 are arranged side by side in the vertical direction so as to overlap each other in a plan view. The direction in which the parent substrate 30 and the plurality of child substrates 20 are arranged is not limited to the vertical direction, and may be the front-rear direction, the horizontal direction, or the like. And.

筐体５０は、上下方向に対向する上側内壁面５３及び下側内壁面５４と、上側内壁面５３と下側内壁面５４との間の空間を囲う４つの内側面５５と、を備える。少なくとも１つの内側面５５には、上下方向に直交する方向（以下、親基板３０及び子基板２０の短手方向と称する場合がある）に延びる複数の第１溝部５５１と、複数の第１溝部５５１に跨って上下方向に沿って伸びる第２溝部５５２と、が設けられ、第２溝部５５２には、光反射板又は導光板を用いて構成される光信号伝送部４０が設けられている。また、第１溝部５５１及び第２溝部５５２が設けられた内側面５５と対向する内側面５５には、複数の貫通孔５５３が設けられている。 The housing 50 includes an upper inner wall surface 53 and a lower inner wall surface 54 facing each other in the vertical direction, and four inner surface surfaces 55 surrounding a space between the upper inner wall surface 53 and the lower inner wall surface 54. On at least one inner side surface 55, a plurality of first groove portions 551 extending in a direction orthogonal to the vertical direction (hereinafter, may be referred to as a lateral direction of the parent substrate 30 and the child substrate 20) and a plurality of first groove portions. A second groove portion 552 extending in the vertical direction across the 551 is provided, and the second groove portion 552 is provided with an optical signal transmission unit 40 configured by using a light reflector or a light guide plate. Further, a plurality of through holes 553 are provided on the inner side surface 55 facing the inner side surface 55 where the first groove portion 551 and the second groove portion 552 are provided.

複数の第１溝部５５１は、上下方向に並ぶように親基板３０及び複数の子基板２０の一辺に係合して支持し、複数の貫通孔５５３は、上下方向に並ぶ複数の子基板２０のセル電圧入力部２１を支持する。最下部の貫通孔５５３は、親基板３０のコネクタ３６を支持する。親基板３０のコネクタ３６には、ＥＣＵに接続される信号線のコネクタ部が接続される。このような第１変形例のバッテリ電圧制御装置１２によれば、親基板３０及び複数の子基板２０が上下方向に並べて配置されるので、平面視における親基板３０及び複数の子基板２０の占有面積を小さくできる。 The plurality of first groove portions 551 engage with and support one side of the parent substrate 30 and the plurality of child substrates 20 so as to be arranged in the vertical direction, and the plurality of through holes 553 are the plurality of child substrates 20 arranged in the vertical direction. The cell voltage input unit 21 is supported. The bottom through hole 553 supports the connector 36 of the parent substrate 30. The connector portion of the signal line connected to the ECU is connected to the connector 36 of the parent board 30. According to the battery voltage control device 12 of the first modification, the parent substrate 30 and the plurality of child substrates 20 are arranged side by side in the vertical direction, so that the master substrate 30 and the plurality of child substrates 20 are occupied in a plan view. The area can be reduced.

また、複数の第１溝部５５１に跨って上下方向に沿って伸びる第２溝部５５２には、光信号伝送部４０が設けられるので、親基板３０と複数の子基板２０との間で光信号の授受が可能となる。これにより、親基板３０及び複数の子基板２０に光信号を通過させるための孔部の加工等が不要となる。 Further, since the optical signal transmission unit 40 is provided in the second groove portion 552 extending in the vertical direction across the plurality of first groove portions 551, the optical signal can be transmitted between the parent substrate 30 and the plurality of child substrates 20. It is possible to give and receive. This eliminates the need to process holes for passing optical signals through the parent substrate 30 and the plurality of child substrates 20.

第２溝部５５２は、第１溝部５５１に沿う短手方向に所定の幅Ｗを有するとともに、第１溝部５５１に沿う短手方向及び上下方向に対して直交する深さ方向（以下、親基板３０及び子基板２０の長手方向と称する場合がある）に所定の深さＤを有する。上下方向から見て、子基板２０の子光送信部２３及び子光受信部２４と、親基板３０の親光送信部３２及び親光受信部３３は、短手方向において所定の幅Ｗ内に配置されていることが望ましい。このような配置構成によれば、光信号が光信号伝送部４０で反射しやすくなり、通信の安定性を向上させることができる。 The second groove portion 552 has a predetermined width W in the lateral direction along the first groove portion 551, and has a depth direction orthogonal to the lateral direction and the vertical direction along the first groove portion 551 (hereinafter, the parent substrate 30). And sometimes referred to as the longitudinal direction of the child substrate 20) has a predetermined depth D. When viewed from the vertical direction, the child light transmitting unit 23 and the child light receiving unit 24 of the child substrate 20 and the parent light transmitting unit 32 and the parent light receiving unit 33 of the parent substrate 30 are within a predetermined width W in the lateral direction. It is desirable that it is arranged. According to such an arrangement configuration, the optical signal is easily reflected by the optical signal transmission unit 40, and the stability of communication can be improved.

また、子基板２０の子光送信部２３及び子光受信部２４と、親基板３０の親光送信部３２及び親光受信部３３は、光信号伝送部４０に向くように配置されることが望ましい。このような配置構成によれば、さらに光信号が光信号伝送部４０で反射しやすくなるので、通信の安定性をさらに向上させることが可能になる。 Further, the child light transmitting unit 23 and the child light receiving unit 24 of the child substrate 20 and the parent light transmitting unit 32 and the parent light receiving unit 33 of the parent substrate 30 may be arranged so as to face the optical signal transmitting unit 40. desirable. According to such an arrangement configuration, the optical signal is more easily reflected by the optical signal transmission unit 40, so that the stability of communication can be further improved.

［第２変形例のバッテリ電圧制御装置］
つぎに、第２変形例のバッテリ電圧制御装置１２について、図５Ａ及び図５Ｂを参照して説明する。 [Battery voltage control device of the second modification]
Next, the battery voltage control device 12 of the second modification will be described with reference to FIGS. 5A and 5B.

図５Ａ及び図５Ｂに示すように、第２変形例のバッテリ電圧制御装置１２は、筐体５０の構造や親基板３０及び複数の子基板２０の配置構成が前記実施形態と相違している。具体的に説明すると、複数の子基板２０は、親基板３０に対して上方に配置されるとともに、上下方向に直交する平面内に並べて配置されている。また、筐体５０の上側内壁面５３には、光信号伝送部４０が設けられており、上下方向から見て、親基板３０の親光送信部３２及び親光受信部３３は、子基板２０と重ならない位置に配置されている。 As shown in FIGS. 5A and 5B, the battery voltage control device 12 of the second modification differs from the embodiment in the structure of the housing 50 and the arrangement configuration of the parent substrate 30 and the plurality of child substrates 20. Specifically, the plurality of child substrates 20 are arranged above the parent substrate 30 and arranged side by side in a plane orthogonal to the vertical direction. An optical signal transmission unit 40 is provided on the upper inner wall surface 53 of the housing 50, and the parent light transmitting unit 32 and the parent light receiving unit 33 of the parent substrate 30 are the child substrate 20 when viewed from above and below. It is placed in a position that does not overlap with.

このような第２変形例のバッテリ電圧制御装置１２によれば、親基板３０と複数の子基板２０とを、上下方向でオフセットして配置することで、バッテリ電圧制御装置１２の上下方向と直交する長さ寸法を小さくできる。また、上下方向から見て、親基板３０の親光送信部３２及び親光受信部３３は、子基板２０と重ならない位置に配置されているので、光信号の伝達経路が子基板２０によって遮断されることを回避できる。 According to the battery voltage control device 12 of the second modification, the parent board 30 and the plurality of child boards 20 are arranged so as to be offset in the vertical direction, so that they are orthogonal to the vertical direction of the battery voltage control device 12. The length dimension to be used can be reduced. Further, when viewed from the vertical direction, the parent light transmitting unit 32 and the parent light receiving unit 33 of the parent substrate 30 are arranged at positions that do not overlap with the child substrate 20, so that the transmission path of the optical signal is blocked by the child substrate 20. Can be avoided.

＜第２実施形態＞
［電動車両］
つぎに、第２実施形態の電動車両１について、図６〜図８を参照して説明する。ただし、前記実施形態と共通の構成については、前記実施形態と同じ符号を用いることにより、前記実施形態の説明を援用する。 <Second Embodiment>
[Electric vehicle]
Next, the electric vehicle 1 of the second embodiment will be described with reference to FIGS. 6 to 8. However, for the configuration common to the embodiment, the description of the embodiment is incorporated by using the same reference numerals as those of the embodiment.

本実施形態の電動車両１の車室４の下方には、図６に示すように、３つのバッテリパック１０Ａ、１０Ｂ、１０Ｃが配置されている。具体的には、前部座席６の下方にバッテリパック１０Ａ（以下、第１バッテリパック１０Ａと称する）が配置され、後部座席７の下方に第２バッテリパック１０Ｂが配置され、荷室８の下方に第３バッテリパック１０Ｃが配置されている。 As shown in FIG. 6, three battery packs 10A, 10B, and 10C are arranged below the passenger compartment 4 of the electric vehicle 1 of the present embodiment. Specifically, the battery pack 10A (hereinafter referred to as the first battery pack 10A) is arranged below the front seat 6, the second battery pack 10B is arranged below the rear seat 7, and below the luggage compartment 8. The third battery pack 10C is arranged in.

［バッテリ電圧制御装置］
バッテリ電圧制御装置１２は、図７及び図８に示すように、親基板３０が、筐体５０内の子基板２０以外にも光信号を送信するための親基板分岐部３７（電気スプリッタ、電気分岐カプラなど）と、筐体５０内の子基板２０以外からも光信号を受信するための親基板合流部３８（合流カプラなど）と、をさらに備える。 [Battery voltage controller]
As shown in FIGS. 7 and 8, in the battery voltage control device 12, the parent board branch portion 37 (electric splitter, electricity) for the parent board 30 to transmit an optical signal to other than the child board 20 in the housing 50. A branch coupler or the like) and a parent board merging portion 38 (merging coupler or the like) for receiving an optical signal from other than the child board 20 in the housing 50 are further provided.

親基板３０の親光送信部３２は、筐体５０内の子基板２０に光信号を送信するための第１親光送信部３２１と、筐体５０内の子基板２０以外（後述のセンサ装置６０）に光信号を送信するための第２親光送信部３２２と、を備える。親基板分岐部３７は、送信する信号を分岐して第１親光送信部３２１及び第２親光送信部３２２から光信号を送信させる。 The parent light transmission unit 32 of the parent board 30 is other than the first parent light transmission unit 321 for transmitting an optical signal to the child board 20 in the housing 50 and the child board 20 in the housing 50 (sensor device described later). A second parent light transmission unit 322 for transmitting an optical signal to 60) is provided. The parent board branching unit 37 branches the signal to be transmitted and causes the first parent light transmitting unit 321 and the second parent light transmitting unit 322 to transmit an optical signal.

また、親基板３０の親光受信部３３は、筐体５０内の子基板２０から光信号を受信するための第１親光受信部３３１と、筐体５０内の子基板２０以外（後述のセンサ装置６０）から光信号を受信するための第２親光受信部３３２と、を備える。親基板合流部３８は、第１親光受信部３３１及び第２親光受信部３３２が受信した光信号を合流させる。 Further, the parent light receiving unit 33 of the parent board 30 is other than the first parent light receiving unit 331 for receiving an optical signal from the child board 20 in the housing 50 and the child board 20 in the housing 50 (described later). A second parent light receiving unit 332 for receiving an optical signal from the sensor device 60) is provided. The parent board merging unit 38 merges the optical signals received by the first parent light receiving unit 331 and the second parent light receiving unit 332.

このような第２実施形態のバッテリ電圧制御装置１２によれば、筐体５０内のスペースに子基板２０を収容しきれなくなったとき、子基板２０の収容数を超える他のセル積層体１１Ｂ、１１Ｃに子基板２０と同等の機能（セル電圧検出機能及び光通信機能）を有するセンサ装置６０を設け、センサ装置６０の光受信部６１を光ファイバ７０を介して親基板３０の第２親光送信部３２２に接続し、センサ装置６０の光送信部６２を光ファイバ７０を介して親基板３０の第２親光受信部３３２に接続すれば、筐体５０内の親基板３０と筐体５０外のセンサ装置６０が光信号を介して通信することが可能になる。したがって、筐体５０内のスペースに子基板２０を収容しきれなくなったとしても、親基板３０とセンサ装置６０とを光ファイバ７０を介して接続することで、セル電圧を監視するセル積層体の数をさらに増やすことが可能になる。 According to the battery voltage control device 12 of the second embodiment, when the child substrate 20 cannot be accommodated in the space inside the housing 50, the other cell laminate 11B, which exceeds the capacity of the child substrate 20, A sensor device 60 having the same functions as the child board 20 (cell voltage detection function and optical communication function) is provided on 11C, and the optical receiving unit 61 of the sensor device 60 is connected to the second parent light of the parent board 30 via the optical fiber 70. If it is connected to the transmission unit 322 and the optical transmission unit 62 of the sensor device 60 is connected to the second parent light receiving unit 332 of the parent substrate 30 via the optical fiber 70, the parent substrate 30 and the housing 50 in the housing 50 are connected. The external sensor device 60 can communicate via an optical signal. Therefore, even if the child substrate 20 cannot be accommodated in the space inside the housing 50, the cell laminate that monitors the cell voltage by connecting the parent substrate 30 and the sensor device 60 via the optical fiber 70 It will be possible to increase the number further.

即ち、第２実施形態のバッテリ電圧制御装置１２によれば、図６〜図８に示すように、第２バッテリパック１０Ｂに収容されるセル積層体１１Ｂもセル電圧の監視対象とすることができる。具体的に説明すると、第２バッテリパック１０Ｂに収容されるセル積層体１１Ｂに子基板２０と同等の機能（セル電圧検出機能及び光通信機能）を有するセンサ装置６０を設け、センサ装置６０の光受信部６１を光ファイバ７０を介して親基板３０の第２親光送信部３２２に接続し、センサ装置６０の光送信部６２を光ファイバ７０を介して親基板３０の第２親光受信部３３２に接続すれば、第１バッテリパック１０Ａ内の親基板３０と、第２バッテリパック１０Ｂに収容されるセル積層体１１Ｂのセンサ装置６０が光信号を介して通信することが可能になる。 That is, according to the battery voltage control device 12 of the second embodiment, as shown in FIGS. 6 to 8, the cell stack 11B housed in the second battery pack 10B can also be monitored for the cell voltage. .. Specifically, the cell laminate 11B housed in the second battery pack 10B is provided with a sensor device 60 having the same functions as the child substrate 20 (cell voltage detection function and optical communication function), and the light of the sensor device 60 is provided. The receiving unit 61 is connected to the second parent light transmitting unit 322 of the parent substrate 30 via the optical fiber 70, and the optical transmitting unit 62 of the sensor device 60 is connected to the second parent light receiving unit 62 of the parent substrate 30 via the optical fiber 70. When connected to 332, the parent substrate 30 in the first battery pack 10A and the sensor device 60 of the cell laminate 11B housed in the second battery pack 10B can communicate with each other via an optical signal.

また、第２実施形態のバッテリ電圧制御装置１２では、光ファイバ７０が第２バッテリパック１０Ｂのセンサ装置６０及び第３バッテリパック１０Ｃのセンサ装置６０に光信号を伝達する光ファイバ分岐部７２と、第２バッテリパック１０Ｂのセンサ装置６０及び第３バッテリパック１０Ｃのセンサ装置６０からの光信号が合流する光ファイバ合流部７３と、を有する。 Further, in the battery voltage control device 12 of the second embodiment, the optical fiber 70 transmits an optical signal to the sensor device 60 of the second battery pack 10B and the sensor device 60 of the third battery pack 10C, and the optical fiber branch portion 72. It has an optical fiber merging portion 73 into which optical signals from the sensor device 60 of the second battery pack 10B and the sensor device 60 of the third battery pack 10C merge.

これにより、第２実施形態のバッテリ電圧制御装置１２によれば、図６〜図８に示すように、第３バッテリパック１０Ｃに収容されるセル積層体１１Ｃもセル電圧の監視対象とすることができる。具体的に説明すると、第３バッテリパック１０Ｃに収容されるセル積層体１１Ｃに子基板２０と同等の機能（セル電圧検出機能及び光通信機能）を有するセンサ装置６０を設け、センサ装置６０の光受信部６１を光ファイバ分岐部７２（光スプリッタ、光分岐カプラなど）を介して親基板３０の第２親光送信部３２２に接続し、センサ装置６０の光送信部６２を光ファイバ合流部７３（合流カプラなど）を介して親基板３０の第２親光受信部３３２に接続すれば、第１バッテリパック１０Ａ内の親基板３０と、第３バッテリパック１０Ｃに収容されるセル積層体１１Ｃのセンサ装置６０が光信号を介して通信することが可能になる。なお、光ファイバ分岐部７２及び光ファイバ合流部は、別部品で構成される場合に限らず、一体部品から構成されてもよい。 As a result, according to the battery voltage control device 12 of the second embodiment, as shown in FIGS. 6 to 8, the cell stack 11C housed in the third battery pack 10C can also be monitored for the cell voltage. it can. Specifically, the cell laminate 11C housed in the third battery pack 10C is provided with a sensor device 60 having the same functions as the child substrate 20 (cell voltage detection function and optical communication function), and the light of the sensor device 60 is provided. The receiving unit 61 is connected to the second parent optical transmitting unit 322 of the parent substrate 30 via the optical fiber branching unit 72 (optical splitter, optical branch coupler, etc.), and the optical transmitting unit 62 of the sensor device 60 is connected to the optical fiber merging unit 73. When connected to the second optical fiber receiving unit 332 of the parent substrate 30 via (merging coupler or the like), the parent substrate 30 in the first battery pack 10A and the cell laminate 11C housed in the third battery pack 10C can be connected. The sensor device 60 can communicate via an optical signal. The optical fiber branching portion 72 and the optical fiber merging portion are not limited to being composed of separate parts, but may be composed of an integral part.

なお、前述した実施形態は、適宜、変形、改良、等が可能である。 The above-described embodiment can be appropriately modified, improved, and the like.

本明細書には少なくとも以下の事項が記載されている。なお、括弧内には、上記した実施形態において対応する構成要素等を示しているが、これに限定されるものではない。 At least the following matters are described in this specification. The components and the like corresponding to the above-described embodiment are shown in parentheses, but the present invention is not limited to this.

（１） 複数のセル積層体（セル積層体１１Ａ）の各セル（セル１１１）の電圧を検出するバッテリ電圧制御装置（バッテリ電圧制御装置１２）であって、
前記複数のセル積層体ごとに設けられる複数の子基板（子基板２０）と、
前記複数の子基板と光信号を授受可能な親基板（親基板３０）と、
前記光信号を伝送する光信号伝送部（光信号伝送部４０）と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体（筐体５０）と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣ（電圧検出用ＩＣ２２）と、前記光信号を送信する子光送信部（子光送信部２３）と、前記光信号を受信する子光受信部（子光受信部２４）と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵ（ＣＰＵ３１）と、前記光信号を送信する親光送信部（親光送信部３２）と、前記光信号を受信する親光受信部（親光受信部３３）と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される、バッテリ電圧制御装置。 (1) A battery voltage control device (battery voltage control device 12) that detects the voltage of each cell (cell 111) of a plurality of cell stacks (cell stack 11A).
A plurality of child substrates (child substrates 20) provided for each of the plurality of cell laminates,
A parent substrate (parent substrate 30) capable of exchanging optical signals with the plurality of child substrates,
An optical signal transmission unit (optical signal transmission unit 40) that transmits the optical signal,
A housing (housing 50) for accommodating the plurality of child boards, the parent board, and the optical signal transmission unit is provided.
Each child board
A voltage detection IC (voltage detection IC 22), a child light transmission unit (child light transmission unit 23) for transmitting the optical signal, and a child light reception unit (child light reception unit 24) for receiving the optical signal. , With
The parent substrate is
A CPU (CPU 31) that controls the plurality of child boards, a parent light transmitting unit (parent light transmitting unit 32) that transmits the optical signal, and a parent light receiving unit (parent light receiving unit 33) that receives the optical signal. And with
A battery voltage control device in which the parent board and the plurality of child boards are separate bodies and are configured to be communicable by the optical signal.

（１）によれば、ＣＰＵを搭載した親基板と電圧監視機能を有する子基板とを分離し、これらの基板間で光信号を介して電圧情報を授受することで、車両に応じてセル積層体の数が増減したときであっても、親基板と子基板との物理的な接続作業が不要であって、子基板の数を変更するだけで容易に対応することができる。 According to (1), a parent board on which a CPU is mounted and a child board having a voltage monitoring function are separated, and voltage information is exchanged between these boards via an optical signal to stack cells according to the vehicle. Even when the number of bodies increases or decreases, the physical connection work between the parent board and the child board is unnecessary, and it can be easily dealt with simply by changing the number of child boards.

（２） （１）に記載のバッテリ電圧制御装置であって、
前記光信号伝送部は、光反射板及び導光板の少なくとも一方を含み、
前記親基板及び前記複数の子基板と、前記光信号伝送部とが、前記筐体の内部で対向して配置されている、バッテリ電圧制御装置。 (2) The battery voltage control device according to (1).
The optical signal transmission unit includes at least one of a light reflector and a light guide plate.
A battery voltage control device in which the parent board, the plurality of child boards, and the optical signal transmission unit are arranged so as to face each other inside the housing.

（２）によれば、親基板及び複数の子基板と、光信号伝送部とが、筐体の内部で対向して配置されているので、光信号の伝達経路がシンプルになり、スペース効率が向上する。 According to (2), since the parent board, the plurality of child boards, and the optical signal transmission unit are arranged to face each other inside the housing, the optical signal transmission path is simplified and space efficiency is improved. improves.

（３） （２）に記載のバッテリ電圧制御装置であって、
前記筐体は、
一端部に開口部（開口部５１１）が設けられるとともに、前記一端部と反対側の他端部に底部（底部５１２）が設けられた筒状の筐体本体（筐体本体５１）と、
前記開口部を封止する筐体カバー（筐体カバー５２）と、を備え、
前記親基板及び前記複数の子基板が、前記底部及び前記筐体カバーのいずれか一方に配置され、
前記光信号伝送部は、前記底部及び前記筐体カバーの他方に配置されている、バッテリ電圧制御装置。 (3) The battery voltage control device according to (2).
The housing is
A tubular housing body (housing body 51) having an opening (opening 511) at one end and a bottom (bottom 512) at the other end opposite to the one end.
A housing cover (housing cover 52) for sealing the opening is provided.
The parent substrate and the plurality of child substrates are arranged on either the bottom or the housing cover.
The optical signal transmission unit is a battery voltage control device arranged on the other side of the bottom portion and the housing cover.

（３）によれば、組付け性が向上する。 According to (3), the assembling property is improved.

（４） （１）〜（３）のいずれか記載のバッテリ電圧制御装置であって、
前記親基板は、他のセル積層体の各セルの電圧を検出するセンサ装置（センサ装置６０）に光信号伝達部（光ファイバ７０）を介して接続され、
前記親光送信部は、
前記光信号伝送部を介して前記複数の子基板に前記光信号を送信する第１親光送信部（第１親光送信部３２１）と、
前記光信号伝達部を介して前記複数のセンサ装置に前記光信号を送信する第２親光送信部（第２親光送信部３２２）と、
前記親光受信部は、
前記光信号伝送部を介して前記複数の子基板から前記光信号を受信する第１親光受信部（第１親光受信部３３１）と、
前記光信号伝達部を介して前記複数のセンサ装置から前記光信号を受信する第２親光受信部（第２親光受信部３３２）と、を備える、バッテリ電圧制御装置。 (4) The battery voltage control device according to any one of (1) to (3).
The parent substrate is connected to a sensor device (sensor device 60) that detects the voltage of each cell of another cell laminate via an optical signal transmission unit (optical fiber 70).
The parent light transmitter is
A first parent light transmission unit (first parent light transmission unit 321) that transmits the optical signal to the plurality of child substrates via the optical signal transmission unit, and
A second parent light transmission unit (second parent light transmission unit 322) that transmits the optical signal to the plurality of sensor devices via the optical signal transmission unit, and
The parent light receiving unit is
A first parent light receiving unit (first parent light receiving unit 331) that receives the optical signal from the plurality of child substrates via the optical signal transmitting unit, and
A battery voltage control device including a second parent light receiving unit (second parent light receiving unit 332) that receives the optical signal from the plurality of sensor devices via the optical signal transmitting unit.

（４）によれば、筐体内のスペースに子基板を収容しきれなくなったとき、親基板とセンサ装置とを光信号伝達部を介して接続することで、セル積層体の数をさらに増やすことができる。 According to (4), when the child substrate cannot be accommodated in the space inside the housing, the number of cell laminates can be further increased by connecting the parent substrate and the sensor device via an optical signal transmission unit. Can be done.

（５） （１）に記載のバッテリ電圧制御装置であって、
前記親基板及び前記複数の子基板は、第１方向（上下方向）に並べて配置されており、
前記筐体は、前記第１方向に対向する第１内壁面（上側内壁面５３）及び第２内壁面（下側内壁面５４）と、前記第１内壁面と前記第２内壁面との間の空間を囲う内側面（内側面５５）と、を備え、
前記内側面には、前記第１方向に直交する第２方向（短手方向）に延びる複数の第１溝部（第１溝部５５１）と、前記複数の第１溝部に跨って前記第１方向に沿って伸びる第２溝部（第２溝部５５２）と、が設けられ、
前記第２溝部には、前記光信号伝送部が設けられている、バッテリ電圧制御装置。 (5) The battery voltage control device according to (1).
The parent substrate and the plurality of child substrates are arranged side by side in the first direction (vertical direction).
The housing is between the first inner wall surface (upper inner wall surface 53) and the second inner wall surface (lower inner wall surface 54) facing the first direction, and the first inner wall surface and the second inner wall surface. With an inner side surface (inner side surface 55) that surrounds the space of
On the inner surface, a plurality of first groove portions (first groove portions 551) extending in a second direction (short direction) orthogonal to the first direction, and the plurality of first groove portions straddling the first groove portions in the first direction. A second groove portion (second groove portion 552) extending along the line is provided.
A battery voltage control device in which the optical signal transmission unit is provided in the second groove portion.

（５）によれば、親基板及び複数の子基板は第１方向に並べて配置されるので、第１方向に直交する平面における親基板及び複数の子基板の占有面積を小さくできる。また、筐体の内側面に設けられた第１溝部に親基板及び複数の子基板を支持させながら、複数の第１溝部に跨って第１方向に沿って伸びる第２溝部に光信号伝送部を設けることで、親基板と複数の子基板とで光信号の授受が可能となる。これにより、親基板及び複数の子基板に光信号を通過させるための孔部の加工等が不要となる。 According to (5), since the parent substrate and the plurality of child substrates are arranged side by side in the first direction, the occupied area of the parent substrate and the plurality of child substrates in the plane orthogonal to the first direction can be reduced. Further, while the parent substrate and the plurality of child substrates are supported by the first groove portion provided on the inner side surface of the housing, the optical signal transmission unit is formed in the second groove portion extending along the first direction across the plurality of first groove portions. By providing the above, optical signals can be exchanged between the parent substrate and a plurality of child substrates. This eliminates the need to process holes for passing optical signals through the parent substrate and the plurality of child substrates.

（６） （５）に記載のバッテリ電圧制御装置であって、
前記第２溝部は、前記第２方向に所定の幅（幅Ｗ）を有するとともに、前記第１方向及び前記第２方向に直交する第３方向（長手方向）に所定の深さ（深さＤ）を有し、
前記第１方向から見て、前記子光送信部、前記子光受信部、前記親光送信部、及び前記親光受信部は、前記第２方向において前記所定の幅内に配置されている、バッテリ電圧制御装置。 (6) The battery voltage control device according to (5).
The second groove portion has a predetermined width (width W) in the second direction and has a predetermined depth (depth D) in a third direction (longitudinal direction) orthogonal to the first direction and the second direction. )
When viewed from the first direction, the child light transmitting unit, the child light receiving unit, the parent light transmitting unit, and the parent light receiving unit are arranged within the predetermined width in the second direction. Battery voltage controller.

（６）によれば、光信号が光信号伝送部で反射しやすくなり、通信の安定性が向上する。 According to (6), the optical signal is easily reflected by the optical signal transmission unit, and the stability of communication is improved.

（７） （６）に記載のバッテリ電圧制御装置であって、
前記子光送信部、前記子光受信部、前記親光送信部、及び前記親光受信部は、前記光信号伝送部に向くように配置されている、バッテリ電圧制御装置。 (7) The battery voltage control device according to (6).
A battery voltage control device in which the child light transmitting unit, the child light receiving unit, the parent light transmitting unit, and the parent light receiving unit are arranged so as to face the optical signal transmitting unit.

（７）によれば、光信号が光信号伝送部で反射しやすくなり、通信の安定性が向上する。 According to (7), the optical signal is easily reflected by the optical signal transmission unit, and the stability of communication is improved.

（８） （２）又は（３）に記載のバッテリ電圧制御装置であって、
前記複数の子基板は、前記親基板に対し第１方向（上下方向）の一方側（上方）に配置されており、
前記複数の子基板は、前記第１方向に直交する平面内に並べて配置されており、
前記第１方向から見て、前記親光送信部及び前記親光受信部は、前記子基板と重ならない位置に配置されている、バッテリ電圧制御装置。 (8) The battery voltage control device according to (2) or (3).
The plurality of child substrates are arranged on one side (upper side) of the first direction (vertical direction) with respect to the parent substrate.
The plurality of child substrates are arranged side by side in a plane orthogonal to the first direction.
A battery voltage control device in which the parent light transmitting unit and the parent light receiving unit are arranged at positions that do not overlap with the child substrate when viewed from the first direction.

（８）によれば、親基板と複数の子基板とを、第１方向でオフセットすることで、バッテリ電圧制御装置の第１方向と直交する方向における長さを小さくできる。また、第１方向から見て、親光送信部及び親光受信部は、子基板と重ならない位置に配置されているので、光信号の伝達経路が子基板によって遮断されるのを回避できる。 According to (8), by offsetting the parent substrate and the plurality of child substrates in the first direction, the length in the direction orthogonal to the first direction of the battery voltage control device can be reduced. Further, since the parent light transmitting unit and the parent light receiving unit are arranged at positions that do not overlap with the child substrate when viewed from the first direction, it is possible to prevent the transmission path of the optical signal from being blocked by the child substrate.

（９） 複数のセル積層体（セル積層体１１Ａ）を収容した第１バッテリパック（第１バッテリパック１０Ａ）と、
前記複数のセル積層体の各セル（セル１１１）の電圧を検出するバッテリ電圧制御装置（バッテリ電圧制御装置１２）と、を備える電動車両（電動車両１）であって、
前記バッテリ電圧制御装置は、
前記第１バッテリパックの前記複数のセル積層体ごとに設けられる複数の子基板（子基板２０）と、
前記複数の子基板と光信号を授受可能な親基板（親基板３０）と、
前記光信号を伝送する光信号伝送部（光信号伝送部４０）と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体（筐体５０）と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣ（電圧検出用ＩＣ２２）と、前記光信号を送信する子光送信部（子光送信部２３）と、前記光信号を受信する子光受信部（子光受信部２４）と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵ（ＣＰＵ３１）と、前記光信号を送信する親光送信部（親光送信部３２）と、前記光信号を受信する親光受信部（親光受信部３３）と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される、電動車両。 (9) A first battery pack (first battery pack 10A) containing a plurality of cell laminates (cell laminates 11A) and
An electric vehicle (electric vehicle 1) including a battery voltage control device (battery voltage control device 12) for detecting the voltage of each cell (cell 111) of the plurality of cell laminates.
The battery voltage control device is
A plurality of child substrates (child substrates 20) provided for each of the plurality of cell laminates of the first battery pack, and
A parent substrate (parent substrate 30) capable of exchanging optical signals with the plurality of child substrates,
An optical signal transmission unit (optical signal transmission unit 40) that transmits the optical signal,
A housing (housing 50) for accommodating the plurality of child boards, the parent board, and the optical signal transmission unit is provided.
Each child board
A voltage detection IC (voltage detection IC 22), a child light transmission unit (child light transmission unit 23) for transmitting the optical signal, and a child light reception unit (child light reception unit 24) for receiving the optical signal. , With
The parent substrate is
A CPU (CPU 31) that controls the plurality of child boards, a parent light transmitting unit (parent light transmitting unit 32) that transmits the optical signal, and a parent light receiving unit (parent light receiving unit 33) that receives the optical signal. And with
An electric vehicle in which the parent substrate and the plurality of child substrates are separate bodies and can communicate with each other by the optical signal.

（９）によれば、ＣＰＵを搭載した親基板と電圧監視機能を有する子基板とを分離し、これらの基板間で光信号を介して電圧情報を授受することで、車両に応じてセル積層体の数が増減したときであっても、親基板と子基板との物理的な接続作業が不要であって、子基板の数を変更するだけで容易に対応することができる。
また、車両に第２バッテリパックを設ける場合、第１バッテリパックの親基板と第２バッテリパックのセンサ装置とを光信号伝達部を介して接続することで、第２バッテリパックのセル電圧も第１バッテリパックの親基板で監視することができる。
さらに、電圧情報を光信号を用いて伝送するので、車両のサイバーセキュリティの観点で安全性が高い。 According to (9), a parent board on which a CPU is mounted and a child board having a voltage monitoring function are separated, and voltage information is exchanged between these boards via an optical signal to stack cells according to the vehicle. Even when the number of bodies increases or decreases, the physical connection work between the parent board and the child board is unnecessary, and it can be easily dealt with simply by changing the number of child boards.
Further, when the second battery pack is provided in the vehicle, the cell voltage of the second battery pack is also increased by connecting the parent substrate of the first battery pack and the sensor device of the second battery pack via the optical signal transmission unit. 1 It can be monitored on the parent board of the battery pack.
Furthermore, since voltage information is transmitted using optical signals, it is highly safe from the viewpoint of vehicle cyber security.

（１０） （９）に記載の電動車両であって、
前記バッテリ電圧制御装置は、前記第１バッテリパックに収容されている、電動車両。 (10) The electric vehicle according to (9).
The battery voltage control device is an electric vehicle housed in the first battery pack.

（１０）によれば、バッテリ電圧制御装置が第１バッテリパックに収容されているので、複数のセル積層体の各セルとバッテリ電圧制御装置とをつなぐ信号線を短くできる。 According to (10), since the battery voltage control device is housed in the first battery pack, the signal line connecting each cell of the plurality of cell stacks and the battery voltage control device can be shortened.

（１１） （９）又は（１０）に記載の電動車両であって、
前記電動車両は、複数のセル積層体（セル積層体１１Ｂ）を収容した第２バッテリパック（第２バッテリパック１０Ｂ）をさらに備え、
前記第２バッテリパックの前記複数のセル積層体には、それぞれ該セル積層体の各セルの電圧を検出するセンサ装置（センサ装置６０）が設けられ、
前記親基板は、前記複数のセンサ装置に光信号伝達部（光ファイバ７０）を介して接続され
前記親光送信部は、
前記光信号伝送部を介して前記複数の子基板に前記光信号を送信する第１親光送信部（第１親光送信部３２１）と、
前記光信号伝達部を介して前記複数のセンサ装置に前記光信号を送信する第２親光送信部（第２親光送信部３２２）と、
前記親光受信部は、
前記光信号伝送部を介して前記複数の子基板から前記光信号を受信する第１親光受信部（第１親光受信部３３１）と、
前記光信号伝達部を介して前記複数のセンサ装置から前記光信号を受信する第２親光受信部（第２親光受信部３３２）と、を備える、電動車両。 (11) The electric vehicle according to (9) or (10).
The electric vehicle further includes a second battery pack (second battery pack 10B) accommodating a plurality of cell laminates (cell laminates 11B).
Each of the plurality of cell stacks of the second battery pack is provided with a sensor device (sensor device 60) for detecting the voltage of each cell of the cell stack.
The parent substrate is connected to the plurality of sensor devices via an optical signal transmission unit (optical fiber 70), and the parent light transmission unit is connected to the parent light transmission unit.
A first parent light transmission unit (first parent light transmission unit 321) that transmits the optical signal to the plurality of child substrates via the optical signal transmission unit, and
A second parent light transmission unit (second parent light transmission unit 322) that transmits the optical signal to the plurality of sensor devices via the optical signal transmission unit, and
The parent light receiving unit is
A first parent light receiving unit (first parent light receiving unit 331) that receives the optical signal from the plurality of child substrates via the optical signal transmitting unit, and
An electric vehicle including a second parent light receiving unit (second parent light receiving unit 332) that receives the optical signal from the plurality of sensor devices via the optical signal transmitting unit.

（１１）によれば、筐体内のスペースに子基板を収容しきれなくなったとき、親基板とセンサ装置とを光信号伝達部を介して接続することで、セル積層体の数をさらに増やすことができる。 According to (11), when the child substrate cannot be accommodated in the space inside the housing, the number of cell laminates can be further increased by connecting the parent substrate and the sensor device via an optical signal transmission unit. Can be done.

（１２） （１１）に記載の電動車両であって、
前記電動車両は、複数のセル積層体（セル積層体１１Ｃ）を収容した第３バッテリパック（第３バッテリパック１０Ｃ）をさらに備え、
前記第３バッテリパックの前記複数のセル積層体には、それぞれ該セル積層体の各セルの電圧を検出する他のセンサ装置（センサ装置６０）が設けられ、
前記光信号伝達部は、
前記複数のセンサ装置及び前記複数の他のセンサ装置に前記光信号を伝達する分岐部（光ファイバ分岐部７２）と、
前記複数のセンサ装置及び前記複数の他のセンサ装置からの前記光信号が合流する合流部（光ファイバ合流部７３）と、を有する、電動車両。 (12) The electric vehicle according to (11).
The electric vehicle further includes a third battery pack (third battery pack 10C) accommodating a plurality of cell laminates (cell laminates 11C).
Each of the plurality of cell stacks of the third battery pack is provided with another sensor device (sensor device 60) for detecting the voltage of each cell of the cell stack.
The optical signal transmission unit
A branch portion (optical fiber branch portion 72) that transmits the optical signal to the plurality of sensor devices and the plurality of other sensor devices, and a branch portion (optical fiber branch portion 72).
An electric vehicle having a merging portion (optical fiber merging portion 73) at which the optical signals from the plurality of sensor devices and the plurality of other sensor devices merge.

（１２）によれば、光信号伝達部に分岐部を設けることで、監視対象のセル積層体の数をさらに増やすことができる。 According to (12), the number of cell stacks to be monitored can be further increased by providing the branch portion in the optical signal transmission portion.

１ 電動車両
１０Ａ 第１バッテリパック
１０Ｂ 第２バッテリパック
１０Ｃ 第３バッテリパック
１１１ セル
１１Ａ セル積層体
１１Ｂ セル積層体
１１Ｃ セル積層体
１２ バッテリ電圧制御装置
２０ 子基板
２２ 電圧検出用ＩＣ
２３ 子光送信部
２４ 子光受信部
３０ 親基板
３１ ＣＰＵ
３２ 親光送信部
３３ 親光受信部
４０ 光信号伝送部
５０ 筐体
５１ 筐体本体
５１１ 開口部
５１２ 底部
５２ 筐体カバー
５３ 上側内壁面
５４ 下側内壁面
５５ 内側面
５５１ 第１溝部
５５２ 第２溝部
６０ センサ装置
７０ 光ファイバ
７２ 光ファイバ分岐部
７３ 光ファイバ合流部 1 Electric vehicle 10A 1st battery pack 10B 2nd battery pack 10C 3rd battery pack 111 Cell 11A Cell laminate 11B Cell laminate 11C Cell laminate 12 Battery voltage control device 20 Child substrate 22 Voltage detection IC
23 Child light transmitter 24 Child light receiver 30 Parent board 31 CPU
32 Familiar light transmitting unit 33 Familiar light receiving unit 40 Optical signal transmitting unit 50 Housing 51 Housing body 511 Opening 512 Bottom 52 Housing cover 53 Upper inner wall surface 54 Lower inner wall surface 55 Inner side surface 551 First groove 552 Second Groove 60 Sensor device 70 Optical fiber 72 Optical fiber branch 73 Optical fiber confluence

Claims (12)

複数のセル積層体の各セルの電圧を検出するバッテリ電圧制御装置であって、
前記複数のセル積層体ごとに設けられる複数の子基板と、
前記複数の子基板と光信号を授受可能な親基板と、
前記光信号を伝送する光信号伝送部と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣと、前記光信号を送信する子光送信部と、前記光信号を受信する子光受信部と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵと、前記光信号を送信する親光送信部と、前記光信号を受信する親光受信部と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される、バッテリ電圧制御装置。 A battery voltage control device that detects the voltage of each cell of a plurality of cell stacks.
A plurality of child substrates provided for each of the plurality of cell laminates,
The plurality of child boards, a parent board capable of exchanging optical signals, and
An optical signal transmission unit that transmits the optical signal,
The plurality of child boards, the parent board, and a housing for accommodating the optical signal transmission unit are provided.
Each child board
Each includes a voltage detection IC, a child light transmitting unit that transmits the optical signal, and a child light receiving unit that receives the optical signal.
The parent substrate is
A CPU that controls the plurality of child boards, a parent light transmitting unit that transmits the optical signal, and a parent light receiving unit that receives the optical signal are provided.
A battery voltage control device in which the parent board and the plurality of child boards are separate bodies and are configured to be communicable by the optical signal. 請求項１に記載のバッテリ電圧制御装置であって、
前記光信号伝送部は、光反射板及び導光板の少なくとも一方を含み、
前記親基板及び前記複数の子基板と、前記光信号伝送部とが、前記筐体の内部で対向して配置されている、バッテリ電圧制御装置。 The battery voltage control device according to claim 1.
The optical signal transmission unit includes at least one of a light reflector and a light guide plate.
A battery voltage control device in which the parent board, the plurality of child boards, and the optical signal transmission unit are arranged so as to face each other inside the housing. 請求項２に記載のバッテリ電圧制御装置であって、
前記筐体は、
一端部に開口部が設けられるとともに、前記一端部と反対側の他端部に底部が設けられた筒状の筐体本体と、
前記開口部を封止する筐体カバーと、を備え、
前記親基板及び前記複数の子基板が、前記底部及び前記筐体カバーのいずれか一方に配置され、
前記光信号伝送部は、前記底部及び前記筐体カバーの他方に配置されている、バッテリ電圧制御装置。 The battery voltage control device according to claim 2.
The housing is
A tubular housing body having an opening at one end and a bottom at the other end opposite to the one end.
A housing cover for sealing the opening is provided.
The parent substrate and the plurality of child substrates are arranged on either the bottom or the housing cover.
The optical signal transmission unit is a battery voltage control device arranged on the other side of the bottom portion and the housing cover. 請求項１〜３のいずれか一項に記載のバッテリ電圧制御装置であって、
前記親基板は、他のセル積層体の各セルの電圧を検出するセンサ装置に光信号伝達部を介して接続され、
前記親光送信部は、
前記光信号伝送部を介して前記複数の子基板に前記光信号を送信する第１親光送信部と、
前記光信号伝達部を介して前記複数のセンサ装置に前記光信号を送信する第２親光送信部と、
前記親光受信部は、
前記光信号伝送部を介して前記複数の子基板から前記光信号を受信する第１親光受信部と、
前記光信号伝達部を介して前記複数のセンサ装置から前記光信号を受信する第２親光受信部と、を備える、バッテリ電圧制御装置。 The battery voltage control device according to any one of claims 1 to 3.
The parent substrate is connected to a sensor device that detects the voltage of each cell of another cell laminate via an optical signal transmission unit.
The parent light transmitter is
A first parent optical transmission unit that transmits the optical signal to the plurality of child substrates via the optical signal transmission unit, and a first parent optical transmission unit.
A second parent light transmission unit that transmits the optical signal to the plurality of sensor devices via the optical signal transmission unit, and a second parent light transmission unit.
The parent light receiving unit is
A first parent light receiving unit that receives the optical signal from the plurality of child substrates via the optical signal transmitting unit, and a first parent light receiving unit.
A battery voltage control device including a second parent light receiving unit that receives the optical signal from the plurality of sensor devices via the optical signal transmitting unit. 請求項１に記載のバッテリ電圧制御装置であって、
前記親基板及び前記複数の子基板は、第１方向に並べて配置されており、
前記筐体は、前記第１方向に対向する第１内壁面及び第２内壁面と、前記第１内壁面と前記第２内壁面との間の空間を囲う内側面と、を備え、
前記内側面には、前記第１方向に直交する第２方向に延びる複数の第１溝部と、前記複数の第１溝部に跨って前記第１方向に沿って伸びる第２溝部と、が設けられ、
前記第２溝部には、前記光信号伝送部が設けられている、バッテリ電圧制御装置。 The battery voltage control device according to claim 1.
The parent substrate and the plurality of child substrates are arranged side by side in the first direction.
The housing includes a first inner wall surface and a second inner wall surface facing in the first direction, and an inner surface surface surrounding a space between the first inner wall surface and the second inner wall surface.
The inner surface is provided with a plurality of first groove portions extending in a second direction orthogonal to the first direction, and a second groove portion extending along the first direction across the plurality of first groove portions. ,
A battery voltage control device in which the optical signal transmission unit is provided in the second groove portion. 請求項５に記載のバッテリ電圧制御装置であって、
前記第２溝部は、前記第２方向に所定の幅を有するとともに、前記第１方向及び前記第２方向に直交する第３方向に所定の深さを有し、
前記第１方向から見て、前記子光送信部、前記子光受信部、前記親光送信部、及び前記親光受信部は、前記第２方向において前記所定の幅内に配置されている、バッテリ電圧制御装置。 The battery voltage control device according to claim 5.
The second groove portion has a predetermined width in the second direction and a predetermined depth in the first direction and the third direction orthogonal to the second direction.
When viewed from the first direction, the child light transmitting unit, the child light receiving unit, the parent light transmitting unit, and the parent light receiving unit are arranged within the predetermined width in the second direction. Battery voltage controller. 請求項６に記載のバッテリ電圧制御装置であって、
前記子光送信部、前記子光受信部、前記親光送信部、及び前記親光受信部は、前記光信号伝送部に向くように配置されている、バッテリ電圧制御装置。 The battery voltage control device according to claim 6.
A battery voltage control device in which the child light transmitting unit, the child light receiving unit, the parent light transmitting unit, and the parent light receiving unit are arranged so as to face the optical signal transmitting unit. 請求項２又は３に記載のバッテリ電圧制御装置であって、
前記複数の子基板は、前記親基板に対し第１方向の一方側に配置されており、
前記複数の子基板は、前記第１方向に直交する平面内に並べて配置されており、
前記第１方向から見て、前記親光送信部及び前記親光受信部は、前記子基板と重ならない位置に配置されている、バッテリ電圧制御装置。 The battery voltage control device according to claim 2 or 3.
The plurality of child substrates are arranged on one side in the first direction with respect to the parent substrate.
The plurality of child substrates are arranged side by side in a plane orthogonal to the first direction.
A battery voltage control device in which the parent light transmitting unit and the parent light receiving unit are arranged at positions that do not overlap with the child substrate when viewed from the first direction. 複数のセル積層体を収容した第１バッテリパックと、
前記複数のセル積層体の各セルの電圧を検出するバッテリ電圧制御装置と、を備える電動車両であって、
前記バッテリ電圧制御装置は、
前記第１バッテリパックの前記複数のセル積層体ごとに設けられる複数の子基板と、
前記複数の子基板と光信号を授受可能な親基板と、
前記光信号を伝送する光信号伝送部と、
前記複数の子基板、前記親基板、及び前記光信号伝送部を収容する筐体と、を備え、
各子基板は、
それぞれ電圧検出用ＩＣと、前記光信号を送信する子光送信部と、前記光信号を受信する子光受信部と、を備え、
前記親基板は、
前記複数の子基板を制御するＣＰＵと、前記光信号を送信する親光送信部と、前記光信号を受信する親光受信部と、を備え、
前記親基板及び前記複数の子基板は、別体であり、前記光信号によって通信可能に構成される、電動車両。 A first battery pack containing a plurality of cell laminates and
An electric vehicle including a battery voltage control device that detects a voltage of each cell of the plurality of cell laminates.
The battery voltage control device is
A plurality of child substrates provided for each of the plurality of cell laminates of the first battery pack, and
The plurality of child boards, a parent board capable of exchanging optical signals, and
An optical signal transmission unit that transmits the optical signal,
The plurality of child boards, the parent board, and a housing for accommodating the optical signal transmission unit are provided.
Each child board
Each includes a voltage detection IC, a child light transmitting unit that transmits the optical signal, and a child light receiving unit that receives the optical signal.
The parent substrate is
A CPU that controls the plurality of child boards, a parent light transmitting unit that transmits the optical signal, and a parent light receiving unit that receives the optical signal are provided.
An electric vehicle in which the parent substrate and the plurality of child substrates are separate bodies and can communicate with each other by the optical signal. 請求項９に記載の電動車両であって、
前記バッテリ電圧制御装置は、前記第１バッテリパックに収容されている、電動車両。 The electric vehicle according to claim 9.
The battery voltage control device is an electric vehicle housed in the first battery pack. 請求項９又は１０に記載の電動車両であって、
前記電動車両は、複数のセル積層体を収容した第２バッテリパックをさらに備え、
前記第２バッテリパックの前記複数のセル積層体には、それぞれ該セル積層体の各セルの電圧を検出するセンサ装置が設けられ、
前記親基板は、前記複数のセンサ装置に光信号伝達部を介して接続され、
前記親光送信部は、
前記光信号伝送部を介して前記複数の子基板に前記光信号を送信する第１親光送信部と、
前記光信号伝達部を介して前記複数のセンサ装置に前記光信号を送信する第２親光送信部と、
前記親光受信部は、
前記光信号伝送部を介して前記複数の子基板から前記光信号を受信する第１親光受信部と、
前記光信号伝達部を介して前記複数のセンサ装置から前記光信号を受信する第２親光受信部と、を備える、電動車両。 The electric vehicle according to claim 9 or 10.
The electric vehicle further comprises a second battery pack containing a plurality of cell laminates.
Each of the plurality of cell stacks of the second battery pack is provided with a sensor device for detecting the voltage of each cell of the cell stack.
The parent board is connected to the plurality of sensor devices via an optical signal transmission unit, and is connected to the plurality of sensor devices via an optical signal transmission unit.
The parent light transmitter is
A first parent optical transmission unit that transmits the optical signal to the plurality of child substrates via the optical signal transmission unit, and a first parent optical transmission unit.
A second parent light transmission unit that transmits the optical signal to the plurality of sensor devices via the optical signal transmission unit, and a second parent light transmission unit.
The parent light receiving unit is
A first parent light receiving unit that receives the optical signal from the plurality of child substrates via the optical signal transmitting unit, and a first parent light receiving unit.
An electric vehicle including a second parent light receiving unit that receives the optical signal from the plurality of sensor devices via the optical signal transmitting unit. 請求項１１に記載の電動車両であって、
前記電動車両は、複数のセル積層体を収容した第３バッテリパックをさらに備え、
前記第３バッテリパックの前記複数のセル積層体には、それぞれ該セル積層体の各セルの電圧を検出する他のセンサ装置が設けられ、
前記光信号伝達部は、
前記複数のセンサ装置及び前記複数の他のセンサ装置に前記光信号を伝達する分岐部と、
前記複数のセンサ装置及び前記複数の他のセンサ装置からの前記光信号が合流する合流部と、を有する、電動車両。 The electric vehicle according to claim 11.
The electric vehicle further comprises a third battery pack containing a plurality of cell laminates.
Each of the plurality of cell stacks of the third battery pack is provided with another sensor device for detecting the voltage of each cell of the cell stack.
The optical signal transmission unit
A branch portion that transmits the optical signal to the plurality of sensor devices and the plurality of other sensor devices,
An electric vehicle having the plurality of sensor devices and a confluence portion where the optical signals from the plurality of other sensor devices merge.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022186363A1 (en) * 2021-03-03 2022-09-09 Ａｐｂ株式会社 Lithium-ion battery module

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646534A (en) * 1995-01-06 1997-07-08 Chrysler Corporation Battery monitor for electric vehicles
JPH10143300A (en) * 1996-11-14 1998-05-29 Hitachi Ltd Optical communication processor
JPH10243475A (en) * 1997-02-27 1998-09-11 New Japan Radio Co Ltd Optical communication system
JPH11265733A (en) * 1998-03-17 1999-09-28 Japan Storage Battery Co Ltd Condition-monitoring device for battery group
JP2002009703A (en) * 2000-06-27 2002-01-11 Nec Corp Optical data bus communication system and optical data bus communication method
JP2006078454A (en) * 2004-09-13 2006-03-23 Toshiba Corp Light transmission and reception device and method
JP2007018950A (en) * 2005-07-11 2007-01-25 Nec Tokin Tochigi Ltd Battery pack, and method of configuring battery pack protective circuit
JP2008522579A (en) * 2004-12-24 2008-06-26 エルジー・ケム・リミテッド Voltage balance control system for lithium ion battery and control method thereof
JP2009089487A (en) * 2007-09-28 2009-04-23 Hitachi Ltd Integrated circuit for battery cell, and vehicle power supply system for vehicle using the integrated circuit
JP2009220740A (en) * 2008-03-18 2009-10-01 Honda Motor Co Ltd Signal processing module
JP2010160930A (en) * 2009-01-07 2010-07-22 Mitsubishi Motors Corp Voltage detection device for secondary battery
JP2012047521A (en) * 2010-08-25 2012-03-08 Nippon Soken Inc Battery state monitor
JP2013005509A (en) * 2011-06-14 2013-01-07 Yazaki Corp Battery state notification unit, bus bar module, battery pack, and battery state monitoring system
WO2014170942A1 (en) * 2013-04-15 2014-10-23 日立オートモティブシステムズ株式会社 Battery system
JP2018073691A (en) * 2016-11-01 2018-05-10 株式会社オートネットワーク技術研究所 Vehicle battery monitoring device and vehicle battery monitoring system
JP2019516219A (en) * 2016-04-18 2019-06-13 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Electrochemical sensor with thin sensor and thin sensor
US20190229376A1 (en) * 2018-01-22 2019-07-25 Samsung Electronics Co., Ltd. Battery management apparatus for transmitting and receiving data to manage battery cell using optical signal
JP2019527528A (en) * 2016-06-28 2019-09-26 リニアー テクノロジー エルエルシー Wireless sensing for battery systems
JP2020529107A (en) * 2017-07-28 2020-10-01 ノーススター・バツテリー・カンパニー・エル・エル・シーＮｏｒｔｈｓｔａｒ Ｂａｔｔｅｒｙ Ｃｏｍｐａｎｙ， ＬＬＣ Battery with internal monitoring system

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646534A (en) * 1995-01-06 1997-07-08 Chrysler Corporation Battery monitor for electric vehicles
JPH10143300A (en) * 1996-11-14 1998-05-29 Hitachi Ltd Optical communication processor
JPH10243475A (en) * 1997-02-27 1998-09-11 New Japan Radio Co Ltd Optical communication system
JPH11265733A (en) * 1998-03-17 1999-09-28 Japan Storage Battery Co Ltd Condition-monitoring device for battery group
JP2002009703A (en) * 2000-06-27 2002-01-11 Nec Corp Optical data bus communication system and optical data bus communication method
JP2006078454A (en) * 2004-09-13 2006-03-23 Toshiba Corp Light transmission and reception device and method
JP2008522579A (en) * 2004-12-24 2008-06-26 エルジー・ケム・リミテッド Voltage balance control system for lithium ion battery and control method thereof
JP2007018950A (en) * 2005-07-11 2007-01-25 Nec Tokin Tochigi Ltd Battery pack, and method of configuring battery pack protective circuit
JP2009089487A (en) * 2007-09-28 2009-04-23 Hitachi Ltd Integrated circuit for battery cell, and vehicle power supply system for vehicle using the integrated circuit
JP2009220740A (en) * 2008-03-18 2009-10-01 Honda Motor Co Ltd Signal processing module
JP2010160930A (en) * 2009-01-07 2010-07-22 Mitsubishi Motors Corp Voltage detection device for secondary battery
JP2012047521A (en) * 2010-08-25 2012-03-08 Nippon Soken Inc Battery state monitor
JP2013005509A (en) * 2011-06-14 2013-01-07 Yazaki Corp Battery state notification unit, bus bar module, battery pack, and battery state monitoring system
WO2014170942A1 (en) * 2013-04-15 2014-10-23 日立オートモティブシステムズ株式会社 Battery system
JP2019516219A (en) * 2016-04-18 2019-06-13 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ Electrochemical sensor with thin sensor and thin sensor
JP2019527528A (en) * 2016-06-28 2019-09-26 リニアー テクノロジー エルエルシー Wireless sensing for battery systems
JP2018073691A (en) * 2016-11-01 2018-05-10 株式会社オートネットワーク技術研究所 Vehicle battery monitoring device and vehicle battery monitoring system
JP2020529107A (en) * 2017-07-28 2020-10-01 ノーススター・バツテリー・カンパニー・エル・エル・シーＮｏｒｔｈｓｔａｒ Ｂａｔｔｅｒｙ Ｃｏｍｐａｎｙ， ＬＬＣ Battery with internal monitoring system
US20190229376A1 (en) * 2018-01-22 2019-07-25 Samsung Electronics Co., Ltd. Battery management apparatus for transmitting and receiving data to manage battery cell using optical signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022186363A1 (en) * 2021-03-03 2022-09-09 Ａｐｂ株式会社 Lithium-ion battery module

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