JP2015047917A - Determination device of battery - Google Patents

Determination device of battery Download PDF

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JP2015047917A
JP2015047917A JP2013179779A JP2013179779A JP2015047917A JP 2015047917 A JP2015047917 A JP 2015047917A JP 2013179779 A JP2013179779 A JP 2013179779A JP 2013179779 A JP2013179779 A JP 2013179779A JP 2015047917 A JP2015047917 A JP 2015047917A
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impact
battery
battery pack
threshold
degree
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隆志 細川
Takashi Hosokawa
隆志 細川
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

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  • Battery Mounting, Suspending (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a determination device of a battery which can determine adequately whether or not a battery pack can continue to be used due to impact input.SOLUTION: Impact force Fi is calculated from acceleration (S10). If the impact force Fi is larger than a first threshold value S1, system start prohibiting processing is implemented (S12 to S14). And, if the impact force Fi is not larger than the first threshold value S1 and is larger than a second threshold value S2, the number C2 of accumulated impact input times is calculated and impact information is recorded (S16 - S20). And, the number C2 of accumulated impact input times is more than a specified number of times, the system start prohibiting processing is implemented (S22, S24). On the other hand, if the impact force Fi is not larger than the second threshold value S2, or the number C2 of accumulated impact input times is not more than the specified number of times, continuing usage of the battery pack is determined as possible and the present routine is returned (S16, S22, S24).

Description

本発明は、電池の判定装置に係り、詳しくは、電池への衝撃入力に対する安全性を向上させる制御に関する。   The present invention relates to a battery determination device, and more particularly, to control for improving safety against impact input to a battery.

電動車両には、電力を蓄電すると共に電動機に電力を供給する電池パックが搭載されている。そして、このような電池パックでは、車両の衝突等で電池パックに衝撃が加わると、電池パックの外観に損傷がなくても、電池パック内の電池セルの内部構成部品が損傷していることがある。
しかしながら、電池セルの内部構成部品が損傷することにより電池セルで内部短絡が生じ、電池セルが異常発熱する虞がある。
An electric vehicle is equipped with a battery pack that stores electric power and supplies electric power to the electric motor. In such a battery pack, when an impact is applied to the battery pack due to a vehicle collision or the like, the internal components of the battery cells in the battery pack may be damaged even if the appearance of the battery pack is not damaged. is there.
However, if the internal components of the battery cell are damaged, an internal short circuit may occur in the battery cell, and the battery cell may be abnormally heated.

そこで、特許文献1では、車両に衝撃センサを備え、衝撃センサの検出結果に基づき、車両の衝突の有無を判別している。   Therefore, in Patent Document 1, the vehicle is provided with an impact sensor, and the presence or absence of a vehicle collision is determined based on the detection result of the impact sensor.

特許第3838055号Japanese Patent No. 3838055

上記特許文献1の車載用制御装置では、衝撃センサの検出結果に基づいて車両の衝突の有無のみを判別している。
したがって、例えば、衝撃センサの検出結果に基づいて車両の衝突を検出しても、当該衝突における電池パック内の電池セルの損傷度合いを判別することができず、電池セルに損傷がないような衝撃度合いの衝突であっても、安全性を確保するためには電池パックを交換する必要がある。
In the on-vehicle control device of Patent Document 1, only the presence or absence of a vehicle collision is determined based on the detection result of the impact sensor.
Therefore, for example, even if a vehicle collision is detected based on the detection result of the impact sensor, the degree of damage of the battery cell in the battery pack in the collision cannot be determined, and the impact is such that the battery cell is not damaged. Even in the case of a degree of collision, it is necessary to replace the battery pack in order to ensure safety.

しかしながら、電池パックの交換には多大な費用が発生し、電池セルに損傷のない電池パックの交換は、不必要な費用が発生することとなり好ましいことではない。
本発明は、この様な問題を解決するためになされたもので、その目的とするところは、衝撃入力による電池パックの継続使用の可否を的確に判定することのできる電池の判定装置を提供することにある。
However, replacement of the battery pack is very expensive, and replacement of the battery pack without damaging the battery cells is not preferable because unnecessary costs are generated.
The present invention has been made to solve such a problem, and an object of the present invention is to provide a battery determination device capable of accurately determining whether or not the battery pack can be continuously used by an impact input. There is.

上記の目的を達成するために、請求項1の電池の判定装置では、電池に入力される衝撃度合いを検出する衝撃度合い検出手段と、前記衝撃度合いが所定の衝撃閾値を超えた累積入力回数を検出する累積入力回数検出手段と、前記衝撃度合い検出手段にて検出される前記衝撃度合いと前記累積入力回数検出手段にて検出される前記累積入力回数とに基づいて、前記電池の継続使用の可否を判定する判定手段と、を備えることを特徴とする。   In order to achieve the above object, in the battery determination apparatus according to claim 1, an impact degree detection means for detecting the degree of impact input to the battery, and the cumulative number of times that the impact degree exceeds a predetermined impact threshold are obtained. Based on the cumulative input number detecting means to be detected, the degree of impact detected by the impact degree detecting means, and the cumulative input number detected by the cumulative input number detecting means, whether or not the battery can be used continuously is determined. Determining means for determining whether or not.

また、請求項2の電池の判定装置では、請求項1において、前記所定の衝撃閾値は、複数の値からなり、前記判定手段は、前記所定の衝撃閾値毎に設定される回数閾値を有し、前記衝撃度合い検出手段にて検出された前記衝撃度合いと前記所定の衝撃閾値とを、該所定の衝撃閾値のうち大きい値から順に比較し、前記衝撃度合いが前記所定の衝撃閾値より大きい場合に、前記累積入力回数検出手段にて検出された前記累積入力回数が該所定の衝撃閾値に対応した前記回数閾値よりも多いと、前記電池の継続使用を不可と判定することを特徴とする。   The battery determination apparatus according to claim 2 is the battery determination apparatus according to claim 1, wherein the predetermined impact threshold includes a plurality of values, and the determination unit includes a number-of-times threshold set for each of the predetermined impact thresholds. When the impact level detected by the impact level detection means and the predetermined impact threshold value are compared in order from a larger value of the predetermined impact threshold values, and the impact level is greater than the predetermined impact threshold value. When the cumulative input number detected by the cumulative input number detection means is larger than the number threshold corresponding to the predetermined impact threshold, it is determined that continuous use of the battery is impossible.

また、請求項3の電池の判定装置では、請求項2において、前記所定の衝撃閾値毎に設定される前記回数閾値は、前記所定の衝撃閾値が大きいほど小さく設定されることを特徴とする。
また、請求項4の電池の判定装置では、請求項1から3のいずれか1項において、前記電池は、車両駆動用の電池モジュールが収容された電池パックであり、前記衝撃度合い検出手段は、前記電池パックを前記車両の車体に取り付ける取付部材上となる位置に対応する前記該電池パック内に配設されることを特徴とする。
The battery determination apparatus according to claim 3 is characterized in that, in claim 2, the number-of-times threshold set for each of the predetermined impact thresholds is set smaller as the predetermined impact threshold is larger.
According to a battery determination apparatus of a fourth aspect, in any one of the first to third aspects, the battery is a battery pack in which a battery module for driving a vehicle is accommodated, and the impact degree detecting means includes The battery pack is disposed in the battery pack corresponding to a position on an attachment member for attaching the battery pack to a vehicle body of the vehicle.

また、請求項5の電池の判定装置では、請求項1から3のいずれか1項において、前記電池は、車両駆動用の電池モジュールが収容された電池パックであり、前記衝撃度合い検出手段は、前記電池パックの重心位置近傍の該電池パック内に配設されることを特徴とする。   Further, in the battery determination device according to claim 5, in any one of claims 1 to 3, the battery is a battery pack in which a battery module for driving a vehicle is accommodated, and the impact degree detection unit includes: The battery pack is disposed in the battery pack in the vicinity of the center of gravity of the battery pack.

請求項1の発明によれば、電池に入力される衝撃度合いと当該衝撃度合いが所定の衝撃閾値を超えた累積入力回数とに基づいて、電池の継続使用の可否を判定しており、例えば、所定の衝撃閾値を超える衝撃度合いの入力回数が累積入力回数を超える場合に、電池の継続使用を不可と判定し、電池に入力される衝撃度合いが電池に異常を来さないような小さい衝撃度合いである場合に、電池の継続使用を可と判定することで、電池の状態に応じて的確に電池の継続使用の可否を判定することができる。   According to the first aspect of the present invention, it is determined whether or not the battery can be used continuously based on the degree of impact input to the battery and the cumulative number of times that the impact exceeds a predetermined impact threshold. When the number of times of input with a degree of impact exceeding the specified impact threshold exceeds the cumulative number of inputs, it is determined that continuous use of the battery is impossible, and the degree of impact that is so small that the degree of impact input to the battery does not cause an abnormality to the battery In this case, it is possible to accurately determine whether or not the battery can be used continuously according to the state of the battery by determining that the battery can be used continuously.

また、請求項2では、所定の衝撃閾値が複数の値からなり、衝撃度合いと所定の衝撃閾値とを所定の衝撃閾値のうち大きい値から順に比較し、衝撃度合いが所定の衝撃閾値より大きい場合に、累積入力回数が所定の衝撃閾値に対応した回数閾値よりも多いと、電池の継続使用を不可と判定しており、例えば、所定の衝撃閾値が小さくなるにつれて、所定の衝撃閾値に対応した回数閾値が大きくなるように設定し、所定の衝撃閾値を超えた衝撃度合いの累積入力回数が所定の衝撃閾値に対応した回数閾値より多くなると、電池パックの継続使用を不可と判定することで、一回の衝撃の入力で電池に異常が発生するような所定の衝撃閾値を超える衝撃度合いの大きな衝撃が電池に入力された場合には、一回の衝撃の入力で電池の継続使用を不可とし、複数回の衝撃の入力で電池に異常が発生するような所定の衝撃閾値を超える衝撃度合いの比較的小さな衝撃が電池に入力された場合には、複数回の衝撃の入力で電池の継続使用を不可と判定することができ、電池に入力される衝撃の衝撃度合いと累積入力回数とに応じて、電池の継続使用の可否を判定することで、電池の状態に応じて的確に電池パックの継続使用の可否を判定することができる。   According to a second aspect of the present invention, when the predetermined impact threshold is composed of a plurality of values, the degree of impact is compared with the predetermined impact threshold in order from the largest value of the predetermined impact threshold, and the degree of impact is greater than the predetermined impact threshold. In addition, if the cumulative number of inputs is greater than the number threshold corresponding to the predetermined impact threshold, it is determined that continuous use of the battery is not possible. For example, as the predetermined impact threshold decreases, the battery corresponds to the predetermined impact threshold. By setting the number-of-times threshold to be large and determining that the cumulative number of inputs of the degree of impact exceeding the predetermined impact threshold is greater than the number threshold corresponding to the predetermined impact threshold, it is determined that continuous use of the battery pack is impossible. If an impact with a large impact level that exceeds a predetermined impact threshold is input to the battery, the battery cannot be used continuously with a single impact input. When a relatively small impact with a degree of impact exceeding the predetermined impact threshold is input to the battery, the battery will continue to be used with multiple impact inputs. The battery pack can be accurately determined according to the state of the battery by determining whether the battery can be used continuously according to the degree of impact of the impact input to the battery and the cumulative number of inputs. It can be determined whether continuous use is possible.

また、請求項3の発明によれば、所定の衝撃閾値毎に設定される回数閾値を所定の衝撃閾値が大きいほど小さく設定しており、所定の衝撃閾値が小さくなるにつれて、所定の衝撃閾値に対応した回数閾値が大きくなるように設定し、所定の衝撃閾値を超えた衝撃度合いの累積入力回数が所定の衝撃閾値に対応した回数閾値より多くなると、電池パックの継続使用を不可と判定することで、一回の衝撃の入力で電池に異常が発生するような所定の衝撃閾値を超える衝撃度合いの大きな衝撃が電池に入力された場合には、一回の衝撃の入力で電池の継続使用を不可とし、複数回の衝撃の入力で電池に異常が発生するような所定の衝撃閾値を超える衝撃度合いの比較的小さな衝撃が電池に入力された場合には、複数回の衝撃の入力で電池の継続使用を不可と判定することができ、電池に入力される衝撃の衝撃度合いと累積入力回数とに応じて、電池の継続使用の可否を判定することで、電池の状態に応じて的確に電池の継続使用の可否を判定することができる。   According to the third aspect of the present invention, the number threshold set for each predetermined impact threshold is set to be smaller as the predetermined impact threshold is larger, and the predetermined impact threshold is decreased as the predetermined impact threshold decreases. The corresponding number of times threshold is set to be large, and it is determined that continuous use of the battery pack is impossible when the cumulative number of inputs of the degree of impact exceeding the predetermined impact threshold exceeds the number of times threshold corresponding to the predetermined impact threshold. If a large impact with a degree of impact exceeding the predetermined impact threshold is input to the battery, the battery will continue to be used with a single impact input. If a relatively small impact with a degree of impact exceeding the predetermined impact threshold that causes an abnormality in the battery due to multiple impact inputs is input to the battery, the battery Continuous use It can be determined that the battery cannot be used, and it is determined whether the battery can be used continuously according to the degree of impact of the impact input to the battery and the cumulative number of inputs. Can be determined.

また、請求項4の発明によれば、電池パックを車両の車体に取り付ける取付部材上の電池パック内に衝撃度合い検出手段を配設しており、車両が衝突をした場合に車両の車体より取付部材を介して、効率よく衝突の衝撃が入力されるので精度良く衝撃度合いを検出することができ、精度良く電池パックの継続使用の可否を判定することができる。
また、請求項5の発明によれば、電池パックの重心位置近傍の電池パック内に衝撃度合い検出手段を配設しており、旋回や加減速等の車両の走行状態による影響を小さくすることができ、精度良く衝撃度合いを検出することができる。
According to the invention of claim 4, the impact degree detecting means is disposed in the battery pack on the mounting member for mounting the battery pack to the vehicle body, and is mounted from the vehicle body when the vehicle collides. Since the impact of the collision is efficiently input through the member, the degree of impact can be detected with high accuracy, and whether or not the battery pack can be continuously used can be determined with high accuracy.
Further, according to the invention of claim 5, the impact degree detecting means is disposed in the battery pack near the center of gravity of the battery pack, so that the influence of the running state of the vehicle such as turning and acceleration / deceleration can be reduced. The degree of impact can be detected with high accuracy.

本発明に係る電池の判定装置を適用した車両の概略図である。It is the schematic of the vehicle to which the determination apparatus of the battery which concerns on this invention is applied. 図1のA−A線での断面図である。It is sectional drawing in the AA of FIG. 本発明に係る電池の判定装置の衝撃入力判定制御のフローチャートである。It is a flowchart of the impact input determination control of the determination apparatus of the battery which concerns on this invention.

以下、本発明の実施の形態を図面に基づき説明する。
まずは、本発明に係る電池の判定装置を適用した車両に付いて説明する。
図1は、本発明に係る電池の判定装置を適用した車両の概略図である。また、図2は、図1のA−A線での断面図である。なお、図1は、電池パックの上側を形成する電池パックカバーを除外して記載した図である。図中矢印「上」は車体上方向、矢印「前」は車体前方向、矢印「横」は車体幅方向をそれぞれ示している。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a vehicle to which the battery determination device according to the present invention is applied will be described.
FIG. 1 is a schematic view of a vehicle to which a battery determination device according to the present invention is applied. 2 is a cross-sectional view taken along line AA in FIG. FIG. 1 is a diagram excluding the battery pack cover that forms the upper side of the battery pack. In the figure, the arrow “up” indicates the vehicle body upward direction, the arrow “front” indicates the vehicle body front direction, and the arrow “lateral” indicates the vehicle body width direction.

本発明に係る電池の判定装置を適用した車両1は、当該車両1の走行装置として、電池パック20より高電圧回路を介して高電圧の電力が供給されインバータにより作動が制御される走行用モータと、車両1を総合的に制御する電子コントロールユニット(衝撃度合い検出手段、累積入力回数検出手段、判定手段)30とを備え、充電リッドに外部電源より延びる充電ケーブルを接続し、充電器にて電池パック20を充電することができる電動車両である。   A vehicle 1 to which a battery determination device according to the present invention is applied is a traveling motor that is supplied with high-voltage power from a battery pack 20 via a high-voltage circuit and whose operation is controlled by an inverter. And an electronic control unit (impact degree detection means, cumulative input number detection means, determination means) 30 for comprehensively controlling the vehicle 1, a charging cable extending from an external power source is connected to the charging lid, and a charger This is an electric vehicle that can charge the battery pack 20.

車両1の車体10は、当該車体10の左右両側を前後方向に延伸する一対のサイドメンバ11と、一対のサイドメンバ11に接続される複数のバッテリクロスメンバ(本発明の取付部材に相当)12,13,14とで構成されている。
電池パック20は、リチウムイオン電池等の二次電池で構成されるものである。そして、電池パック20は、電池セルを監視するセルモニタリングユニットを備え複数の電池セルで構成される複数の電池モジュール21と、セルモニタリングユニットの出力に基づき電池モジュール21の温度及び電池残量等を監視するバッテリモニタリングユニットと、ジャンクションボックス22と、高電圧を導電する導電部品とが、樹脂製の図示しない電池パックカバーと電池パックケース23とに内包されて一体に構成されている。
The vehicle body 10 of the vehicle 1 includes a pair of side members 11 extending in the front-rear direction on the left and right sides of the vehicle body 10, and a plurality of battery cross members (corresponding to mounting members of the present invention) 12 connected to the pair of side members 11. , 13 and 14.
The battery pack 20 is composed of a secondary battery such as a lithium ion battery. And the battery pack 20 is equipped with the cell monitoring unit which monitors a battery cell, the several battery module 21 comprised by several battery cells, the temperature of the battery module 21, a battery residual amount, etc. based on the output of a cell monitoring unit. A battery monitoring unit to be monitored, a junction box 22, and a conductive component that conducts high voltage are enclosed in a battery pack cover (not shown) made of resin and a battery pack case 23, and are integrally configured.

そして、このような電池パック20は、車体中央の図示しないフロアの下部に位置する一対のサイドメンバ11の間に電池パック20の位置決めを行う図示しないバッテリトレーを介して各々のバッテリクロスメンバ12,13,14上に、車両1の車体10の下部を形成するフロアパネルの下方に配設されている。
ジャンクションボックス22は、複数の電池モジュール21からの電力を供給或いは遮断するためのリレーやヒューズや加速度センサ(衝撃度合い検出手段)24等を内部に備えている。
Such a battery pack 20 is connected to each battery cross member 12 via a battery tray (not shown) for positioning the battery pack 20 between a pair of side members 11 located at the lower part of a floor (not shown) at the center of the vehicle body. 13 and 14 are disposed below the floor panel that forms the lower part of the vehicle body 10 of the vehicle 1.
The junction box 22 includes a relay, a fuse, an acceleration sensor (impact level detection means) 24, and the like for supplying or cutting off power from the plurality of battery modules 21.

加速度センサ24は、電池パック20に加わる加速度より電池パック20に加わる衝撃力(本発明の衝撃度合いに相当)Fiを算出するための加速度を検出するものである。そして、加速度センサ24は、図1及び図2に示すように、車体上面視において電池パック20の重心位置近傍で、且つバッテリクロスメンバ13上となるジャンクションボックス22の内部に配設されている。なお、図2では、加速度センサ24は、電池パック20の重心位置に配設されている。   The acceleration sensor 24 detects the acceleration for calculating the impact force (corresponding to the impact level of the present invention) Fi applied to the battery pack 20 from the acceleration applied to the battery pack 20. As shown in FIGS. 1 and 2, the acceleration sensor 24 is disposed in the vicinity of the center of gravity of the battery pack 20 in the top view of the vehicle body and inside the junction box 22 on the battery cross member 13. In FIG. 2, the acceleration sensor 24 is disposed at the center of gravity of the battery pack 20.

電子コントロールユニット30は、車両の総合的な制御を行うための制御装置であり、入出力装置、記憶装置(ROM、RAM、不揮発性RAM等)、中央演算処理装置(CPU)及びタイマ等を含んで構成される。
電子コントロールユニット30の入力側には、上記加速度センサ24やインバータやバッテリモニタリングユニット等が接続されており、これらのセンサや機器類からの検出情報が入力される。
The electronic control unit 30 is a control device for performing comprehensive control of the vehicle, and includes an input / output device, a storage device (ROM, RAM, nonvolatile RAM, etc.), a central processing unit (CPU), a timer, and the like. Consists of.
The input side of the electronic control unit 30 is connected to the acceleration sensor 24, an inverter, a battery monitoring unit, and the like, and detection information from these sensors and devices is input.

一方、電子コントロールユニット30の出力側には、上記インバータや図示しないディスプレイや警告灯等の表示装置が接続されている。
そして、電池コントロールユニット30は、車両1の衝突等により電池パック20に衝撃が加わるような場合に、加速度センサ24にて検出された加速度より電池パック20に加わった衝撃力Fiを算出する。そして、算出された衝撃力Fiと、当該衝撃力Fiの衝撃入力の累積回数である累積衝撃入力回数(本発明の累積入力回数に相当)と、衝撃力Fi毎に設定される判定閾値(本発明の回数閾値に相当)とに基づいて、衝撃力Fiの累積衝撃入力回数が当該衝撃力Fiに設定される判定閾値を越えた場合に電池パック20からのモータ等への電力の供給を停止するシステム起動禁止処理を実施する衝撃入力判定制御を行う。
On the other hand, the output side of the electronic control unit 30 is connected to a display device such as the inverter, a display (not shown) or a warning light.
The battery control unit 30 calculates the impact force Fi applied to the battery pack 20 from the acceleration detected by the acceleration sensor 24 when an impact is applied to the battery pack 20 due to a collision of the vehicle 1 or the like. Then, the calculated impact force Fi, the cumulative impact input count that is the cumulative count of the impact input of the impact force Fi (corresponding to the cumulative input count of the present invention), and the determination threshold value set for each impact force Fi The power supply from the battery pack 20 to the motor or the like is stopped when the cumulative impact input count of the impact force Fi exceeds a determination threshold set for the impact force Fi. Impact input determination control is performed to perform the system activation prohibition process.

以下、本発明に係る電池の判定装置の衝撃入力判定制御について説明する。
図3は、本発明に係る電池の判定装置の衝撃入力判定制御のフローチャートである。なお、本衝撃入力判定制御は、車両1の衝突等により電池パック20内に備わる加速度センサ24にて加速度が検出されると開始される。
図3に示すように、ステップS10では、加速度センサ24にて検出された加速度より衝撃力Fiを算出する。そして、ステップS12に進む。
Hereinafter, the impact input determination control of the battery determination apparatus according to the present invention will be described.
FIG. 3 is a flowchart of the impact input determination control of the battery determination device according to the present invention. The impact input determination control is started when acceleration is detected by the acceleration sensor 24 provided in the battery pack 20 due to a collision of the vehicle 1 or the like.
As shown in FIG. 3, in step S10, the impact force Fi is calculated from the acceleration detected by the acceleration sensor 24. Then, the process proceeds to step S12.

ステップS12では、衝撃力Fiが第1閾値(本発明の所定の衝撃閾値に相当)S1より大きいか、否かを判別する。判別結果が真(Yes)で衝撃力Fiが第1閾値S1より大きければ、ステップS14に進む。また、判別結果が否(No)で衝撃力Fiが第1閾値S1より大きくなければ、ステップS16に進む。なお、第1閾値S1は、第1閾値S1より大きな衝撃力Fiが電池パック20に一度加わっただけで、電池パック20内の電池モジュール21に損傷の虞がある値に設定される。即ち、衝撃力Fiが第1閾値S1より大きいような場合には、累積衝撃入力回数C1が1であって、当該累積衝撃入力回数を判定する判定閾値Sc1が1に設定されていることになる。   In step S12, it is determined whether or not the impact force Fi is greater than a first threshold value (corresponding to a predetermined impact threshold value of the present invention) S1. If the determination result is true (Yes) and the impact force Fi is greater than the first threshold value S1, the process proceeds to step S14. If the determination result is NO (No) and the impact force Fi is not greater than the first threshold value S1, the process proceeds to step S16. Note that the first threshold value S1 is set to a value that may cause damage to the battery module 21 in the battery pack 20 only once an impact force Fi greater than the first threshold value S1 is applied to the battery pack 20 once. That is, when the impact force Fi is larger than the first threshold value S1, the cumulative impact input count C1 is 1, and the determination threshold value Sc1 for determining the cumulative impact input count is set to 1. .

ステップS14では、システム起動禁止処理を実行する。詳しくは、衝撃力Fiにより電池パック20内の電池モジュール21に損傷の虞があり、電池パック20の継続使用を不可として、電池パック20からのモータ等への電力の供給を停止する処理を実行する。また、合わせて衝撃入力回数C2をクリアする。そして、本ルーチンをリターンする。
一方で、ステップS16では、衝撃力Fiが第2閾値(本発明の所定の衝撃閾値に相当)S2より大きいか、否かを判別する。判別結果が真(Yes)で衝撃力Fiが第2閾値S2より大きければ、ステップS18に進む。また、判別結果が否(No)で衝撃力Fiが第2閾値S2より大きくなければ、衝撃力Fiによる電池パック20内の電池モジュール21に損傷の虞がなく、電池パック20の継続使用が可能として、本ルーチンをリターンする。
In step S14, a system activation prohibition process is executed. Specifically, there is a possibility that the battery module 21 in the battery pack 20 may be damaged by the impact force Fi, and the process of stopping the supply of power from the battery pack 20 to the motor or the like is executed by disabling the continuous use of the battery pack 20. To do. In addition, the impact input count C2 is cleared. Then, this routine is returned.
On the other hand, in step S16, it is determined whether or not the impact force Fi is greater than a second threshold value (corresponding to a predetermined impact threshold value of the present invention) S2. If the determination result is true (Yes) and the impact force Fi is greater than the second threshold value S2, the process proceeds to step S18. If the determination result is negative (No) and the impact force Fi is not greater than the second threshold value S2, the battery module 21 in the battery pack 20 is not damaged by the impact force Fi, and the battery pack 20 can be used continuously. Return this routine.

ステップS18では、累積衝撃入力回数C2を算出する。詳しくは、累積衝撃入力回数C2に1を加えて、累積衝撃入力回数C2とする。なお、本衝撃入力判定制御の実施前の累積衝撃入力回数C2は、0(ゼロ)である。そして、ステップS20に進む。
ステップS20では、衝撃情報を記録する。詳しくは、衝撃力Fiや衝撃力の入力方向や衝撃力Fiの累積衝撃入力回数C2を記録する。そして、ステップS22に進む。
In step S18, the cumulative impact input count C2 is calculated. Specifically, 1 is added to the cumulative impact input count C2 to obtain the cumulative impact input count C2. Note that the cumulative impact input count C2 before the implementation of the impact input determination control is 0 (zero). Then, the process proceeds to step S20.
In step S20, impact information is recorded. Specifically, the impact force Fi, the input direction of the impact force, and the cumulative impact input count C2 of the impact force Fi are recorded. Then, the process proceeds to step S22.

ステップS22では、累積衝撃入力回数C2が判定閾値(本発明の回数閾値に相当)Sc2より多いか、否かを判別する。判別結果が真(Yes)で累積衝撃入力回数C2が判定閾値Sc2より多ければ、ステップS14に進む。また、判別結果が否(No)で累積衝撃入力回数C2が判定閾値Sc2より多くなければ、衝撃力Fiによる電池パック20内の電池モジュール21に損傷の虞がなく、電池パック20の継続使用が可能として、本ルーチンをリターンする。なお、判定閾値Sc2は、第1閾値S1以下第2閾値S2より大きな衝撃力Fiが電池パック20に複数回加わった場合に、電池パック20内の電池モジュール21に損傷の虞のある回数に設定される。   In step S22, it is determined whether or not the cumulative impact input count C2 is greater than a determination threshold (corresponding to the count threshold of the present invention) Sc2. If the determination result is true (Yes) and the cumulative impact input count C2 is greater than the determination threshold value Sc2, the process proceeds to step S14. If the determination result is NO (No) and the cumulative impact input count C2 is not greater than the determination threshold value Sc2, the battery module 21 in the battery pack 20 is not damaged by the impact force Fi, and the battery pack 20 can be used continuously. Return this routine as possible. The determination threshold value Sc2 is set to the number of times that the battery module 21 in the battery pack 20 may be damaged when an impact force Fi equal to or less than the first threshold value S1 is applied to the battery pack 20 a plurality of times. Is done.

このように、本発明に係る電池の判定装置では、車体上面視において電池パック20の重心位置近傍で、且つバッテリクロスメンバ13上となるジャンクションボックス22の内部に配設される加速度センサ24にて、車両1の衝突等による電池パック20に加わる加速度を検出する。そして、当該加速度より電池パック20に加わった衝撃力Fiを算出し、衝撃力Fiが第1閾値S1より大きく、当該衝撃力Fiの累積衝撃入力回数が1度のみである場合や、衝撃力Fiが第1閾値S1以下第2閾値S2で、且つ累積衝撃入力回数C2が所定回数より多い場合に、衝撃力Fiにより電池パック20内の電池モジュール21に損傷の虞があり、電池パック20の継続使用を不可として、電池パック20からのモータ等への電力の供給を停止する処理を実行している。   As described above, in the battery determination device according to the present invention, the acceleration sensor 24 disposed in the vicinity of the center of gravity of the battery pack 20 in the top view of the vehicle body and inside the junction box 22 on the battery cross member 13. The acceleration applied to the battery pack 20 due to the collision of the vehicle 1 is detected. Then, the impact force Fi applied to the battery pack 20 is calculated from the acceleration, and the impact force Fi is larger than the first threshold value S1, and the cumulative impact input count of the impact force Fi is only 1 degree, or the impact force Fi. Is less than or equal to the first threshold S1 and the second threshold S2, and the cumulative impact input count C2 is greater than the predetermined count, the impact force Fi may damage the battery module 21 in the battery pack 20, and the battery pack 20 continues. A process of disabling the use and stopping the supply of power from the battery pack 20 to the motor or the like is executed.

したがって、電池パック20に加わる衝撃力Fiと、衝撃力Fiの累積衝撃入力回数C2とに応じて、電池パック20の継続使用可否を判定することで、電池パック20の電池モジュールの21状態に応じて、的確に電池パック20の継続使用の可否を判定することができる。
また、電池パック20を車両1の車体10に取り付けるバッテリクロスメンバ13上の電池パック20内のジャンクションボックス22内に加速度センサ24を配設しており、車両1が衝突をした場合に車両1の車体10よりバッテリクロスメンバ13を介して、効率よく衝突の衝撃が入力されるので精度良く加速度を検出し、精度良く衝撃力Fiを算出することができ、精度良く電池パック20の継続使用の可否を判定することができる。
Accordingly, by determining whether or not the battery pack 20 can be used continuously according to the impact force Fi applied to the battery pack 20 and the cumulative impact input count C2 of the impact force Fi, the battery pack 20 can be used depending on the state of the battery module 21. Thus, it is possible to accurately determine whether or not the battery pack 20 can be continuously used.
Further, an acceleration sensor 24 is disposed in a junction box 22 in the battery pack 20 on the battery cross member 13 that attaches the battery pack 20 to the vehicle body 10 of the vehicle 1, and when the vehicle 1 collides, Since the impact of the collision is efficiently input from the vehicle body 10 via the battery cross member 13, the acceleration can be detected with high accuracy and the impact force Fi can be calculated with high accuracy, and whether the battery pack 20 can be used continuously with high accuracy. Can be determined.

また、電池パック20の重心位置近傍の電池パック20内のジャンクションボックス22内に加速度センサ24を配設しており、旋回や加減速等の車両の走行状態による影響を小さくすることができ、加速度を検出し、精度良く衝撃力Fiを算出することができる。
以上で発明の実施形態の説明を終えるが、発明の形態は本実施形態に限定されるものではない。
In addition, an acceleration sensor 24 is provided in the junction box 22 in the battery pack 20 near the center of gravity of the battery pack 20, and the influence of the vehicle running state such as turning and acceleration / deceleration can be reduced. And the impact force Fi can be calculated with high accuracy.
This is the end of the description of the embodiment of the invention, but the invention is not limited to this embodiment.

例えば、本実施例では、加速度センサ24を図1及び図2に示すように、車体上面視において電池パック20の重心位置近傍で、且つバッテリクロスメンバ13上となるジャンクションボックス22の内部に配設しているが、これに限定されるものではなく、加速度センサ24を電池パック20内の車体上面視において電池パック20の重心位置近傍、或いは電池パック20内のバッテリクロスメンバ13上となる位置のいずれかに配設するようにしてもよい。   For example, in this embodiment, as shown in FIGS. 1 and 2, the acceleration sensor 24 is disposed in the vicinity of the center of gravity of the battery pack 20 in the top view of the vehicle body and inside the junction box 22 on the battery cross member 13. However, the present invention is not limited to this, and the acceleration sensor 24 is positioned near the center of gravity of the battery pack 20 or on the battery cross member 13 in the battery pack 20 when the vehicle body in the battery pack 20 is viewed from above. You may make it arrange | position in either.

また、加速度センサ24をジャンクションボックス22内に配設しているが、これに限定されるものではなく、加速度センサ24を電池パック20の重心位置近傍で、且つ電池パック20を車体10に固定するためのバッテリクロスメンバ14等の部材上に配設すればよい。
また、衝撃力Fiの判定を第1閾値S1と第2閾値S2としているが、これに限定されるものではなく、衝撃力Fiを判定する閾値を更に細分化し、細分化した閾値毎での累積衝撃入力回数を判定する所定回数を設定して電池パック20の継続使用の可否を判定するようにしてもよい。
Although the acceleration sensor 24 is disposed in the junction box 22, the present invention is not limited to this, and the acceleration sensor 24 is fixed in the vicinity of the center of gravity of the battery pack 20 and the battery pack 20 is fixed to the vehicle body 10. For example, the battery cross member 14 may be disposed on the member.
Further, although the determination of the impact force Fi is the first threshold value S1 and the second threshold value S2, it is not limited to this, and the threshold value for determining the impact force Fi is further subdivided and accumulated for each subdivided threshold value. A predetermined number of times for determining the number of impact inputs may be set to determine whether the battery pack 20 can be used continuously.

また、本実施例では、車両1の電池パック20内に搭載された加速度センサ24にて加速度を検出し、車両1の電子コントロールユニット30にて加速度より電池パック20に加わった衝撃力Fiを算出し、当該衝撃力Fiと当該衝撃力Fiの累積入力回数C2とに応じて、電池パック20の継続使用の可否を判定しているが、これに限定するものではなく、例えば、電池モジュール21や電池パック20等の電池ユニット(本発明の電池に相当)内に加速度を検出する加速度センサ(本発明の衝撃度合い検出手段に相当)と、加速度より衝撃力Fiを算出し記憶し、且つ当該衝撃力Fiの累積入力回数C2を記憶することのできる記憶装置(本発明の衝撃度合い検出手段、累積入力回数検出手段に相当)とを備え、当該記憶装置に電池ユニットとは別体のテスター機(本発明の判別手段に相当)を接続して電池ユニットの継続使用の可否を判定するようにしてもよい。このような構成とすることで、電池ユニット単体で何かしらの衝撃力が入力されたとしても、電池ユニットの使用時にテスター機を接続することで電池ユニットを車両や電気機器に搭載する前に電池ユニットの継続使用の可否を判定することができ、車両や電気機器に搭載後に電池ユニットの継続使用不可と判定されることによる電池ユニットの再搭載の手間を低減することができる。   In the present embodiment, the acceleration is detected by the acceleration sensor 24 mounted in the battery pack 20 of the vehicle 1, and the impact force Fi applied to the battery pack 20 is calculated from the acceleration by the electronic control unit 30 of the vehicle 1. Whether or not the battery pack 20 can be continuously used is determined according to the impact force Fi and the cumulative input count C2 of the impact force Fi. However, the present invention is not limited to this. An acceleration sensor (corresponding to the impact degree detecting means of the present invention) for detecting acceleration in a battery unit (corresponding to the battery of the present invention) such as the battery pack 20, and calculating and storing the impact force Fi from the acceleration, and the impact And a storage device (corresponding to the impact degree detection means and the cumulative input number detection means of the present invention) capable of storing the cumulative input count C2 of the force Fi. The storage device is separate from the battery unit. A body tester machine (corresponding to the determination means of the present invention) may be connected to determine whether the battery unit can be used continuously. With this configuration, even if some impact force is input to the battery unit alone, the battery unit can be installed before mounting the battery unit on a vehicle or electrical device by connecting a tester machine when using the battery unit. It is possible to determine whether or not the battery unit can be continuously used, and it is possible to reduce the trouble of remounting the battery unit when it is determined that the battery unit cannot be continuously used after being mounted on a vehicle or an electric device.

1 車両
10 車体
11 サイドメンバ
13 バッテリクロスメンバ(取付部材)
20 電池パック
21 電池モジュール
22 ジャンクションボックス
23 電池パックケース
24 加速度センサ(衝撃度合い検出手段)
30 電子コントロールユニット(衝撃度合い検出手段、累積入力回数検出手段、判定手段)
DESCRIPTION OF SYMBOLS 1 Vehicle 10 Car body 11 Side member 13 Battery cross member (mounting member)
20 battery pack 21 battery module 22 junction box 23 battery pack case 24 acceleration sensor (impact level detection means)
30 Electronic control unit (impact level detection means, cumulative input count detection means, determination means)

Claims (5)

電池に入力される衝撃度合いを検出する衝撃度合い検出手段と、
前記衝撃度合いが所定の衝撃閾値を超えた累積入力回数を検出する累積入力回数検出手段と、
前記衝撃度合い検出手段にて検出される前記衝撃度合いと前記累積入力回数検出手段にて検出される前記累積入力回数とに基づいて、前記電池の継続使用の可否を判定する判定手段と、を備えることを特徴とする、電池の判定装置。
An impact degree detection means for detecting the degree of impact input to the battery;
A cumulative input number detection means for detecting a cumulative input number of times when the degree of impact exceeds a predetermined impact threshold;
Determination means for determining whether or not the battery can be used continuously based on the degree of impact detected by the impact degree detection means and the cumulative input count detected by the cumulative input count detection means. A battery determination device.
前記所定の衝撃閾値は、複数の値からなり、
前記判定手段は、前記所定の衝撃閾値毎に設定される回数閾値を有し、前記衝撃度合い検出手段にて検出された前記衝撃度合いと前記所定の衝撃閾値とを、該所定の衝撃閾値のうち大きい値から順に比較し、前記衝撃度合いが前記所定の衝撃閾値より大きい場合に、前記累積入力回数検出手段にて検出された前記累積入力回数が該所定の衝撃閾値に対応した前記回数閾値よりも多いと、前記電池の継続使用を不可と判定することを特徴とする、請求項1に記載の電池の判定装置。
The predetermined impact threshold includes a plurality of values,
The determination means has a threshold value set for each of the predetermined impact threshold values, and the degree of impact detected by the impact degree detection means and the predetermined impact threshold value are determined from the predetermined impact threshold values. In order from the largest value, when the degree of impact is larger than the predetermined impact threshold, the cumulative input number detected by the cumulative input number detection means is greater than the number threshold corresponding to the predetermined impact threshold. The battery determination apparatus according to claim 1, wherein if the number of the battery is large, it is determined that continuous use of the battery is impossible.
前記所定の衝撃閾値毎に設定される前記回数閾値は、前記所定の衝撃閾値が大きいほど小さく設定されることを特徴とする、請求項2に記載の電池の判定装置。   The battery determination apparatus according to claim 2, wherein the number-of-times threshold set for each predetermined impact threshold is set to be smaller as the predetermined impact threshold is larger. 前記電池は、車両駆動用の電池モジュールが収容された電池パックであり、
前記衝撃度合い検出手段は、前記電池パックを前記車両の車体に取り付ける取付部材上となる位置に対応する前記該電池パック内に配設されることを特徴とする、請求項1から3のいずれか1項に記載の電池の判定装置。
The battery is a battery pack containing a battery module for driving a vehicle,
The said impact degree detection means is arrange | positioned in the said battery pack corresponding to the position which becomes on the attachment member which attaches the said battery pack to the vehicle body of the said vehicle, The any one of Claim 1 to 3 characterized by the above-mentioned. The battery determination apparatus according to item 1.
前記電池は、車両駆動用の電池モジュールが収容された電池パックであり、
前記衝撃度合い検出手段は、前記電池パックの重心位置近傍の該電池パック内に配設されることを特徴とする、請求項1から3のいずれか1項に記載の電池の判定装置。
The battery is a battery pack containing a battery module for driving a vehicle,
4. The battery determination device according to claim 1, wherein the impact degree detection unit is disposed in the battery pack in the vicinity of the center of gravity of the battery pack. 5.
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