JP2010181368A - Inspection apparatus of battery pack - Google Patents

Inspection apparatus of battery pack Download PDF

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JP2010181368A
JP2010181368A JP2009027257A JP2009027257A JP2010181368A JP 2010181368 A JP2010181368 A JP 2010181368A JP 2009027257 A JP2009027257 A JP 2009027257A JP 2009027257 A JP2009027257 A JP 2009027257A JP 2010181368 A JP2010181368 A JP 2010181368A
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battery pack
circuit
leakage
battery
connection
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JP5234282B2 (en
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Hiroyasu Suzuki
浩恭 鈴木
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Mitsubishi Motors Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection apparatus of a battery pack for certainly detecting leak of the battery pack. <P>SOLUTION: This inspection apparatus inspects the battery pack storing a plurality of battery cells electrically connected to form a circuit. An external forcible leak circuit is connected to the circuit when the battery pack is inspected. When the external forcible leak circuit is connected to the circuit and a ground line is communicated by a disconnecting/connecting means (S8), the existence of the leak is detected by a leak detecting means (S9). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、バッテリパックの検査装置に係り、詳しくは車両に搭載するバッテリパックの漏電を検出する検査装置が正しく接続されていることを確認する装置に関するものである。   The present invention relates to a battery pack inspection apparatus, and more particularly to an apparatus for confirming that an inspection apparatus for detecting leakage of a battery pack mounted on a vehicle is correctly connected.

近年、大容量のバッテリが搭載され、当該バッテリの電力で駆動モータを作動させることで走行可能な電気自動車またはハイブリッド電気自動車が広く開発されている。
このような大容量のバッテリを収容したバッテリパックの組立工程では、車両に搭載する前に当該バッテリパックに内装されている各部品が正常に機能することを確認する検査工程があり、当該検査工程には、バッテリパック内に収容されている多数のバッテリセルが正常に結線されていることを確認する工程が含まれている。 In recent years, an electric vehicle or a hybrid electric vehicle that is mounted with a large-capacity battery and can run by operating a drive motor with the electric power of the battery has been widely developed.
In an assembly process of a battery pack that accommodates such a large-capacity battery, there is an inspection process for confirming that each component that is built in the battery pack functions normally before being mounted on a vehicle. Includes a step of confirming that a large number of battery cells accommodated in the battery pack are normally connected.

即ち、結線される多数のバッテリセルのうち、特性の悪いバッテリセルが含まれている場合、電気自動車用のバッテリとしての性能に影響を及ぼしてしまうため、このような特性の悪いバッテリセルを予め検査により排除するようにしている。
そこで、従来、容易に検査可能なバッテリの検査システムを用いたバッテリの検査方法が知られている（特許文献１参照）。 That is, if a battery cell with poor characteristics is included among many battery cells to be connected, the performance as a battery for an electric vehicle is affected. Eliminated by inspection.
Therefore, conventionally, a battery inspection method using a battery inspection system that can be easily inspected is known (see Patent Document 1).

特開２００６−１１７２４１号公報JP 2006-117241 A

一方、バッテリパック内には高電圧配分や制御に関する多くの要素部品が存在するため、バッテリパックを構成する各部品単体の動作確認終了後、バッテリパックを組み立てた後に、全体の接続状態について検査装置を用いて検査する必要がある。
特に、直列に結線されたバッテリセルは高電圧となり、車両に搭載され、直列に結線されたバッテリセルを収容した高電圧のバッテリパックと低電圧バッテリはグランドを共通にしていないため、バッテリセルの結線に異常がある場合には、高圧電源から車体側の低圧電源に地絡して漏電する可能性を含んでおり、バッテリパック内に介装されている漏電センサを用いたバッテリパックの検査が必要である。 On the other hand, since there are many element parts related to high voltage distribution and control in the battery pack, after the operation check of each part constituting the battery pack is completed, the battery pack is assembled, and then the entire connection state is inspected. It is necessary to inspect using
In particular, battery cells connected in series have a high voltage and are mounted on a vehicle, and a high voltage battery pack that accommodates battery cells connected in series and a low voltage battery do not share a common ground. If there is an abnormality in the connection, there is a possibility of ground leakage from the high-voltage power supply to the low-voltage power supply on the vehicle body side, and inspection of the battery pack using the leakage sensor interposed in the battery pack is necessary.

この点に関し、上記特許文献１に開示された従来技術では、検査システムにおいてバッテリセルのセル電圧を測定し、電圧判別手段にてバッテリセルを組立ラインに振り分け、バッテリセルを組み立てた後に冷却系統の検査を行うようにしている。
しかしながら、このような構成では、バッテリパックの検査に適用すると検査システムの構成が複雑になるという問題がある。 In this regard, in the prior art disclosed in Patent Document 1 described above, the cell voltage of the battery cell is measured in the inspection system, the battery cell is distributed to the assembly line by the voltage discrimination means, and after the battery cell is assembled, The inspection is done.
However, in such a configuration, there is a problem that the configuration of the inspection system becomes complicated when applied to the inspection of the battery pack.

また、バッテリパック内に介装されている漏電センサとバッテリ回路との接続部における締結部材の緩みというように接続不良がある場合でも、接続の状態を検出できないという問題がある。
本発明は、上述した課題を解決すべくなされたものであり、その目的とするところは、バッテリパックの漏電を確実に検出することの可能なバッテリパックの検査装置を提供することにある。 Further, there is a problem that the connection state cannot be detected even when there is a connection failure such as loosening of the fastening member at the connection portion between the leakage sensor and the battery circuit interposed in the battery pack.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a battery pack inspection apparatus capable of reliably detecting leakage of a battery pack.

上記の目的を達成するべく、請求項１のバッテリパックの検査装置は、電気的に接続されて回路を形成する複数のバッテリセルが収容されたバッテリパックの検査装置において、前記バッテリパックの前記回路からの漏電を検出する漏電検出手段と、前記バッテリパックと別体に設けられ、抵抗を介して地面に接地する接地線及び該接地線の連通と遮断とを行う断接手段を有する外部強制漏電回路とを備え、前記外部強制漏電回路は前記バッテリパックの検査を行う際に前記回路に接続され、前記漏電検出手段は、前記外部強制漏電回路が前記回路に接続されて前記断接手段により前記接地線が連通されると漏電の有無を検出することを特徴とする。   In order to achieve the above object, a battery pack inspection apparatus according to claim 1 is a battery pack inspection apparatus in which a plurality of battery cells that are electrically connected to form a circuit are accommodated. An external forced leakage circuit having a leakage detection means for detecting leakage from the battery, a grounding wire that is provided separately from the battery pack and grounded to the ground via a resistor, and a connection / disconnection means for connecting and disconnecting the grounding wire The external forced leakage circuit is connected to the circuit when inspecting the battery pack, and the leakage detection means is connected to the circuit by the external connection leakage means. It is characterized in that the presence or absence of a leakage is detected when the ground wire is connected.

請求項２のバッテリパックの検査装置は、請求項１において、前記漏電検出手段は、漏電を検出可能であることを自己診断する自己診断回路を有することを特徴とする。   According to a second aspect of the present invention, there is provided the battery pack inspection apparatus according to the first aspect, wherein the leakage detection means includes a self-diagnosis circuit that performs self-diagnosis that leakage can be detected.

請求項１のバッテリパックの検査装置によれば、バッテリパックの検査時には、バッテリパックの結線回路に接続された外部強制漏電回路の接地線が断接手段により連通されてバッテリパックの結線回路が強制的に地絡させられ、この際、漏電検出手段により漏電の有無が検出される。
従って、バッテリパックに接続された漏電検出手段の結線回路との接続状態やバッテリパック内の結線状態を確認することが可能であり、強制的に地絡させたにも拘わらず漏電が検出されない場合には、漏電検出手段とバッテリパックの結線回路との接続及びバッテリパック内の結線を確保することで、通常時においてバッテリパックの結線回路の漏電を漏電検出手段によって確実に検出することができる。 According to the battery pack inspection apparatus of the first aspect, when the battery pack is inspected, the grounding wire of the external forced leakage circuit connected to the connection circuit of the battery pack is communicated by the connecting / disconnecting means, so that the connection circuit of the battery pack is forced. In this case, the presence or absence of leakage is detected by the leakage detection means.
Therefore, it is possible to check the connection state of the leakage detection means connected to the battery pack with the connection circuit and the connection state in the battery pack, and no leakage is detected despite a forced ground fault. In this case, by securing the connection between the leakage detection means and the connection circuit of the battery pack and the connection within the battery pack, the leakage detection means can reliably detect the leakage of the connection circuit of the battery pack at normal times.

請求項２のバッテリパックの検査装置によれば、漏電検出手段は自己診断回路を有しているので、漏電検出手段自身に異常がないことを確認することで、漏電検出手段の結線回路との接続状態やバッテリパック内の結線状態を良好に確認することが可能である。   According to the battery pack inspection apparatus of claim 2, since the leakage detection means has a self-diagnosis circuit, it is confirmed that there is no abnormality in the leakage detection means itself. It is possible to satisfactorily confirm the connection state and the connection state in the battery pack.

本発明に係るバッテリパックの検査装置を含む概略構成図である。It is a schematic block diagram including the inspection apparatus of the battery pack which concerns on this invention. バッテリブロックを形成するバッテリセルの接続状態を示す図である。It is a figure which shows the connection state of the battery cell which forms a battery block. バッテリパック内に接続された漏電センサの検査工程を示すフローチャートである。It is a flowchart which shows the test | inspection process of the leakage sensor connected in the battery pack.

以下、本発明の一実施形態について図面を参照しながら説明する。
図１は、本発明に係るバッテリパックの検査装置を含む回路図である。本願発明に直接関係のない機器（インバータ、駆動モーター等）については図示とその説明を省略する。
バッテリパック１は、例えば電気自動車に搭載されるものであり、当該電気自動車は外部電源からの充電回路を備え、当該充電回路から電力の供給を受けて充電を行う充電器を介して蓄電するものである。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a circuit diagram including a battery pack inspection apparatus according to the present invention. Illustrations and descriptions of devices (inverters, drive motors, etc.) not directly related to the present invention are omitted.
The battery pack 1 is mounted on, for example, an electric vehicle, and the electric vehicle includes a charging circuit from an external power source and stores electricity via a charger that receives power from the charging circuit and performs charging. It is.

図１に示すように、バッテリパック１は、外部の充放電経路に接続されるＰＮ端子２を有している。そして、バッテリパック１内にはバッテリが直列に結線されてバッテリブロック１０が形成され、バッテリブロック１０にはサービスプラグ１１が装着されている。
詳しくは、図２に示すように、バッテリパック１には複数のバッテリセル１２が収容されており、隣接するバッテリセル１２の正極１４ａ及び負極１４ｂが逆にされて配置され、互いに隣接するバッテリセル１２の正極１４ａ及び負極１４ｂが接合部材１６を介して配線接続され、全体として複数のバッテリセル１２が直列に結線されることにより、高圧回路（結線回路）１８が形成される。そして、高圧回路１８はコンタクタ１９ａ、１９ｂを含んで構成されている。 As shown in FIG. 1, the battery pack 1 has a PN terminal 2 connected to an external charge / discharge path. In the battery pack 1, batteries are connected in series to form a battery block 10, and a service plug 11 is attached to the battery block 10.
Specifically, as shown in FIG. 2, a plurality of battery cells 12 are accommodated in the battery pack 1, the battery cells 12 adjacent to each other are arranged with the positive electrodes 14 a and the negative electrodes 14 b of the adjacent battery cells 12 reversed. The 12 positive electrodes 14 a and the negative electrode 14 b are connected to each other via the bonding member 16, and the plurality of battery cells 12 are connected in series as a whole, whereby a high voltage circuit (connection circuit) 18 is formed. The high voltage circuit 18 includes contactors 19a and 19b.

図１に戻り、バッテリパック１内には漏電センサ（漏電検出手段）２０が接続されており、漏電センサ２０によりバッテリパック１内の漏電が検出される。
詳しくは、漏電センサ２０は、例えば検査装置４２から電力が供給され、検査装置４２は交流電源２４に接続されており、交流電源２４はコンデンサ２６に接続されるとともに、整流回路２７、フィルター２８を介してコンパレータ２９にそれぞれ接続されている。そして、コンデンサ２６とバッテリパック１との接続部３６の間には、プリチェック回路（自己診断回路）３０が設けられている。 Returning to FIG. 1, a leakage sensor (leakage detection means) 20 is connected in the battery pack 1, and the leakage in the battery pack 1 is detected by the leakage sensor 20.
Specifically, the leakage sensor 20 is supplied with power from, for example, an inspection device 42, and the inspection device 42 is connected to an AC power supply 24. The AC power supply 24 is connected to a capacitor 26, and a rectifier circuit 27 and a filter 28 are connected. Are connected to the comparators 29 respectively. A pre-check circuit (self-diagnosis circuit) 30 is provided between the connection portion 36 between the capacitor 26 and the battery pack 1.

プリチェック回路３０には抵抗３１とスイッチ３２が設けられ、当該スイッチ３２の一端には接地線３４が接続されており、スイッチ３２をＯＮすることにより漏電センサ２０の回路が接地線３４を介してアースされる。即ち、プリチェック回路３０のスイッチ３２をＯＮすることで漏電回路が形成される。
また、バッテリパック１には、バッテリパック検査装置４０が接続されている。バッテリパック検査装置４０はバッテリパック１の検査を行うものであり、バッテリパック１とは別体にして、バッテリパック１の各コネクタ（図示せず）と接続するための入出力ユニット（図示せず）を含む検査装置４２から構成されており、検査装置４２は制御用装置４４等を含んで構成されている。そして、検査装置４２はＰＮ端子２に接続されている。バッテリパック検査装置４０は、漏電センサ２０の検査を行うとともに、シャットバルブや冷却ファン（図示せず）等の検査を行う。 The pre-check circuit 30 is provided with a resistor 31 and a switch 32, and a ground wire 34 is connected to one end of the switch 32. When the switch 32 is turned on, the circuit of the leakage sensor 20 is connected via the ground wire 34. Grounded. That is, the leakage circuit is formed by turning on the switch 32 of the pre-check circuit 30.
In addition, a battery pack inspection device 40 is connected to the battery pack 1. The battery pack inspecting device 40 inspects the battery pack 1 and is an input / output unit (not shown) for connecting to each connector (not shown) of the battery pack 1 separately from the battery pack 1. The inspection apparatus 42 includes a control apparatus 44 and the like. The inspection device 42 is connected to the PN terminal 2. The battery pack inspection device 40 inspects the leakage sensor 20 and inspects a shut valve, a cooling fan (not shown), and the like.

詳しくは、バッテリパック検査装置４０は、外部強制漏電回路５０を含み、外部強制漏電回路５０には抵抗５２とリレー（断接手段）５４が設けられ、当該リレー５４の一端には接地線５６が接続されて構成されている。
外部強制漏電回路５０は、バッテリパック１の高圧回路１８に接続されており、接続箇所は例えばＰＮ端子２と検査装置４２の間となる。このような構成により、コンタクタ１９ａをＯＮしてからリレー５４をＯＮすることにより外部強制漏電回路５０が接地線５６を介してアースされるので、高圧回路１８を強制的に漏電させることが可能である。 Specifically, the battery pack inspection device 40 includes an external forced leakage circuit 50, the external forced leakage circuit 50 is provided with a resistor 52 and a relay (connection / disconnection means) 54, and a ground wire 56 is provided at one end of the relay 54. Connected and configured.
The external forced earth leakage circuit 50 is connected to the high voltage circuit 18 of the battery pack 1, and the connection location is, for example, between the PN terminal 2 and the inspection device 42. With this configuration, the external forcible leakage circuit 50 is grounded via the ground line 56 by turning on the contactor 19a and then the relay 54, so that the high-voltage circuit 18 can be forcibly leaked. is there.

図３には、バッテリパック１を組み立てた後に実施する、バッテリパック１内に接続されている漏電センサ２０の検査工程がフローチャートで示されており、以下同フローチャートに基づいて説明する。
ステップＳ１では、組立完了後のバッテリパック１をバッテリパック検査装置４０に接続する。詳しくは、バッテリパック１の各コネクタを検査装置４２の入出力ユニットや制御装置４４等に接続する。 FIG. 3 is a flowchart showing an inspection process for the leakage sensor 20 connected to the battery pack 1, which is performed after the battery pack 1 is assembled, and will be described below based on the flowchart.
In step S <b> 1, the assembled battery pack 1 is connected to the battery pack inspection device 40. Specifically, each connector of the battery pack 1 is connected to the input / output unit of the inspection device 42, the control device 44, and the like.

続くステップＳ２では、検査装置４２の電源をＯＮする。
ステップＳ３では、漏電センサ２０のプリチェック回路３０のスイッチ３２をＯＮする。これにより、漏電センサ２０に漏電回路が形成される。
ステップＳ４では、漏電センサ２０が漏電を検出したか否かを判定する。当該判定結果が真（Ｙｅｓ）と判定された場合にはステップＳ５へ進む。 In the subsequent step S2, the inspection apparatus 42 is turned on.
In step S3, the switch 32 of the pre-check circuit 30 of the leakage sensor 20 is turned on. Thereby, a leakage circuit is formed in the leakage sensor 20.
In step S4, it is determined whether or not leakage sensor 20 has detected a leakage. If it is determined that the determination result is true (Yes), the process proceeds to step S5.

ステップＳ５では、漏電センサ２０のプリチェック回路３０のスイッチ３２をＯＦＦする。
ステップＳ６では、漏電センサ２０が漏電を検出したか否かを判定する。当該判定結果が偽（Ｎｏ）と判定された場合はステップＳ８へ進む。
一方、上記ステップＳ４の判定結果が偽（Ｎｏ）、または上記ステップＳ６の判定結果が真（Ｙｅｓ）である場合、ステップＳ７へ進む。 In step S5, the switch 32 of the precheck circuit 30 of the leakage sensor 20 is turned off.
In step S6, it is determined whether or not leakage sensor 20 has detected a leakage. If it is determined that the determination result is false (No), the process proceeds to step S8.
On the other hand, if the determination result in step S4 is false (No) or the determination result in step S6 is true (Yes), the process proceeds to step S7.

ステップＳ７では、漏電センサ２０の回路または部品に異常があるとして、バッテリパック１内の漏電センサ２０の異常と判定される。
ステップＳ８では、コンタクタ１９ａをＯＮしてから、バッテリパック１に接続されている外部強制漏電回路５０のリレー５４をＯＮする。これにより、高圧回路１８を強制的に漏電させる。 In step S <b> 7, it is determined that the leakage sensor 20 in the battery pack 1 is abnormal because the circuit or component of the leakage sensor 20 is abnormal.
In step S8, the contactor 19a is turned on, and then the relay 54 of the external forced leakage circuit 50 connected to the battery pack 1 is turned on. This forcibly causes the high-voltage circuit 18 to leak.

ステップＳ９では、漏電センサ２０が漏電を検出したか否かを判定する。当該判定結果が真（Ｙｅｓ）と判定された場合はステップＳ１０へ進む。
ステップＳ１０では、バッテリパック検査装置４０の外部強制漏電回路５０のリレー５２をＯＦＦする。
ステップＳ１１では、漏電センサ２０が漏電を検出したか否かを判定する。当該判定結果が偽（Ｎｏ）と判定された場合はステップＳ１３へ進む。 In step S9, it is determined whether or not the leakage sensor 20 has detected a leakage. If it is determined that the determination result is true (Yes), the process proceeds to step S10.
In Step S10, the relay 52 of the external forced leakage circuit 50 of the battery pack inspection device 40 is turned off.
In step S11, it is determined whether or not leakage sensor 20 has detected a leakage. If it is determined that the determination result is false (No), the process proceeds to step S13.

一方、上記ステップＳ９の判定結果が偽（Ｎｏ）、または、上記ステップＳ１１の判定結果が真（Ｙｅｓ）である場合、ステップＳ１２へ進む。
ステップＳ１２では、バッテリパック１内の結線に異常があるとして、バッテリパック１の組立異常と判定される。
ステップＳ１３では、バッテリパック１内の結線及び漏電センサ２０を構成する部品は全て正常と判定され、本検査工程は終了となり、次の検査工程へと移行する。 On the other hand, if the determination result in step S9 is false (No) or the determination result in step S11 is true (Yes), the process proceeds to step S12.
In step S <b> 12, it is determined that there is an abnormality in the connection in the battery pack 1 and that the battery pack 1 is abnormally assembled.
In step S13, it is determined that all the components constituting the connection and leakage sensor 20 in the battery pack 1 are normal, and this inspection process ends, and the process proceeds to the next inspection process.

このように、本実施形態によれば、コンタクタ１９ａをＯＮした上でバッテリパック検査装置４０が有する外部強制漏電回路５０のリレー５２をＯＮすることにより、高圧回路１８を強制的に漏電させる漏電回路が形成される。
このような構成にすることにより、漏電センサ２０が漏電を検出できるか否かを判定するので、漏電センサ２０とバッテリパック１の接続部３６における接続状態を確認することが可能である。 Thus, according to the present embodiment, the leakage circuit forcibly leaking the high-voltage circuit 18 by turning on the relay 52 of the external forced leakage circuit 50 of the battery pack inspection device 40 after turning on the contactor 19a. Is formed.
With such a configuration, it is determined whether or not the leakage sensor 20 can detect the leakage, so that it is possible to check the connection state at the connection portion 36 between the leakage sensor 20 and the battery pack 1.

また、直列に結線されているバッテリセル１２の接合部材１６の接合異常等、バッテリパック１内の結線異常がある場合に漏電センサ２０において漏電が検出されるので、バッテリパック１内の結線異常をも検出することができる。
また、漏電センサ２０のプリチェック回路３０のスイッチ３２をＯＮすることにより、漏電センサ２０の回路を漏電させる漏電回路が形成されるので、漏電センサ２０自身が正常に動作することを確認することができる。一方、漏電センサ２０において漏電が検出されない場合には、漏電センサ２０自身の回路または構成する部品の異常を検出することができる。 In addition, since leakage is detected in the leakage sensor 20 when there is a connection abnormality in the battery pack 1, such as a connection abnormality of the connection members 16 of the battery cells 12 connected in series, a connection abnormality in the battery pack 1 is detected. Can also be detected.
In addition, since the leakage circuit for leaking the circuit of the leakage sensor 20 is formed by turning on the switch 32 of the pre-check circuit 30 of the leakage sensor 20, it may be confirmed that the leakage sensor 20 itself operates normally. it can. On the other hand, when no leakage is detected in the leakage sensor 20, it is possible to detect an abnormality in the circuit of the leakage sensor 20 itself or in the constituent parts.

これにより、漏電センサ２０自身の正常な動作を確保しつつ、上記バッテリパック１の接続部３６における接続状態やバッテリパック１内の結線状態を良好に確認することができ、通常時おいてバッテリパック１の高圧回路１８の漏電を漏電センサ２０によって確実に検出することができる。
以上で実施形態の説明を終えるが、本発明は上述した実施形態に限定されるものではない。 Thereby, while ensuring the normal operation of the leakage sensor 20 itself, the connection state in the connection part 36 of the battery pack 1 and the connection state in the battery pack 1 can be confirmed well. The leakage of the high-voltage circuit 18 can be reliably detected by the leakage sensor 20.
Although the description of the embodiment is finished as described above, the present invention is not limited to the above-described embodiment.

例えば、上記実施形態では検査装置４２をバッテリパック１のＰＮ端子２に接続するようにしているが、高圧回路１８に接続することができれば、接続箇所はＰＮ端子２に限られない。   For example, in the above embodiment, the inspection device 42 is connected to the PN terminal 2 of the battery pack 1, but the connection location is not limited to the PN terminal 2 as long as it can be connected to the high voltage circuit 18.

１ バッテリパック
１２ バッテリセル
１６ 結合部材
１８ 高圧回路（結線回路）
１９ａ コンタクタ
２０ 漏電センサ（漏電検出手段）
３０ プリチェック回路（自己診断回路）
３２ スイッチ
３４ 接地線
３６ 接続部
４０ バッテリパック検査装置
５０ 外部強制漏電回路
５２ 抵抗
５４ リレー（断接手段）
５６ 接地線 DESCRIPTION OF SYMBOLS 1 Battery pack 12 Battery cell 16 Connection member 18 High voltage circuit (connection circuit)
19a Contactor 20 Leakage sensor (leakage detection means)
30 Pre-check circuit (self-diagnosis circuit)
32 Switch 34 Ground wire 36 Connection 40 Battery pack inspection device 50 External forced leakage circuit 52 Resistance 54 Relay (connecting / disconnecting means)
56 Grounding wire

Claims (2)

電気的に接続されて回路を形成する複数のバッテリセルが収容されたバッテリパックの検査装置において、
前記バッテリパックの前記回路からの漏電を検出する漏電検出手段と、
前記バッテリパックと別体に設けられ、抵抗を介して地面に接地する接地線及び該接地線の連通と遮断とを行う断接手段を有する外部強制漏電回路とを備え、
前記外部強制漏電回路は前記バッテリパックの検査を行う際に前記回路に接続され、前記漏電検出手段は、前記外部強制漏電回路が前記回路に接続されて前記断接手段により前記接地線が連通されると漏電の有無を検出することを特徴とするバッテリパックの検査装置。 In an inspection apparatus for a battery pack containing a plurality of battery cells that are electrically connected to form a circuit,
A leakage detection means for detecting leakage from the circuit of the battery pack;
The battery pack is provided separately from the battery pack, and includes an external forced earth leakage circuit having a grounding wire grounded to the ground via a resistor and a connection / disconnection means for connecting and disconnecting the grounding wire,
The external forced leakage circuit is connected to the circuit when the battery pack is inspected, and the leakage detection means is connected to the external forced leakage circuit and connected to the ground line by the connection / disconnection means. Then, a battery pack inspection device that detects the presence or absence of electric leakage. 前記漏電検出手段は、漏電を検出可能であることを自己診断する自己診断回路を有することを特徴とする、請求項１に記載のバッテリパックの検査装置。   2. The battery pack inspection device according to claim 1, wherein the leakage detection unit includes a self-diagnosis circuit that self-diagnoses that leakage can be detected.
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