JP5991586B2 - Power storage device and exterior body - Google Patents

Power storage device and exterior body Download PDF

Info

Publication number
JP5991586B2
JP5991586B2 JP2012218355A JP2012218355A JP5991586B2 JP 5991586 B2 JP5991586 B2 JP 5991586B2 JP 2012218355 A JP2012218355 A JP 2012218355A JP 2012218355 A JP2012218355 A JP 2012218355A JP 5991586 B2 JP5991586 B2 JP 5991586B2
Authority
JP
Japan
Prior art keywords
exterior body
hole
power storage
storage device
convex portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2012218355A
Other languages
Japanese (ja)
Other versions
JP2014072086A (en
Inventor
慎吾 河原
慎吾 河原
達也 桝本
達也 桝本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GS Yuasa International Ltd
Original Assignee
GS Yuasa International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GS Yuasa International Ltd filed Critical GS Yuasa International Ltd
Priority to JP2012218355A priority Critical patent/JP5991586B2/en
Publication of JP2014072086A publication Critical patent/JP2014072086A/en
Application granted granted Critical
Publication of JP5991586B2 publication Critical patent/JP5991586B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Landscapes

  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

本発明は、外部端子を有する一つ以上の蓄電素子と、少なくとも蓄電素子の外部端子の有する面を覆う外装体とを備えた蓄電装置、及び導電部を有する一つ以上の電気機器の外側に配置される外装体であって、少なくとも電気機器の導電部の有する面を覆う外装体に関する。   The present invention provides a power storage device that includes one or more power storage elements having external terminals, and an exterior body that covers at least a surface of the external terminals of the power storage elements, and one or more electrical devices having a conductive portion. It is the exterior body arrange | positioned, Comprising: It is related with the exterior body which covers the surface which the electroconductive part of an electric equipment has at least.

ハイブリッド電気自動車(HEV)、電気自動車(EV)、電動バイク、航空機、船舶等の電動機器は、モータや、電灯、表示器等の各種の出力装置を備える。これに伴い、電動機器には、出力装置に電力を供給する蓄電装置が搭載される。   Electric devices such as a hybrid electric vehicle (HEV), an electric vehicle (EV), an electric motorcycle, an aircraft, and a ship include various output devices such as a motor, an electric light, and a display. Accordingly, a power storage device that supplies power to the output device is mounted on the electric device.

蓄電装置は、一つ以上の蓄電素子と、少なくとも蓄電素子の外部端子を有する面の外側を覆う樹脂製の外装体を備える。これにより、蓄電装置は、外装体で電気絶縁性を確保しつつ、蓄電素子の数に応じた電力を出力装置に供給できるようになっている(例えば、特許文献1参照)。   The power storage device includes one or more power storage elements and a resin exterior body that covers at least the outside of the surface having the external terminals of the power storage elements. Accordingly, the power storage device can supply power corresponding to the number of power storage elements to the output device while ensuring electrical insulation with the exterior body (see, for example, Patent Document 1).

この種の蓄電装置は、蓄電素子や蓄電素子に接続された制御基板等の電気機器の通電状態や寿命等を確認するために、定期に或いは不定期に検電される。かかる検電は、計測機器に接続された検電用プローブを電気機器の導通部分に接触させ、電気的なデータを採取することで行われる。   This type of power storage device is regularly or irregularly detected in order to check the energization state or life of an electrical device such as a power storage element or a control board connected to the power storage element. Such voltage detection is performed by bringing a voltage detection probe connected to a measurement device into contact with a conduction portion of the electric device and collecting electrical data.

ところで、この種の蓄電装置においては、上述の如く、電気絶縁性を確保すべく、樹脂製の外装体が採用されるが、樹脂製の外装体では、十分な剛性が得られず、振動や衝撃等の影響で破損する虞がある。そのため、従来の蓄電装置では、蓄電素子(電気機器)を確実に保護することができない。また、この種の蓄電装置は、検電の対象となる電気機器の導通部分が外装体で覆われているため、検電作業を行う度に、蓄電素子上に配置された外装体を排除する(外部端子上を開放させる)といった煩雑な作業が必要である。   By the way, in this type of power storage device, as described above, a resin exterior body is employed in order to ensure electrical insulation, but the resin exterior body does not provide sufficient rigidity, and vibration or There is a risk of damage due to impact. Therefore, the conventional power storage device cannot reliably protect the power storage element (electric device). In addition, this type of power storage device excludes the exterior body disposed on the power storage element every time the power detection operation is performed because the conductive portion of the electrical device that is the subject of electrical detection is covered with the exterior body. A complicated operation such as opening the external terminal is necessary.

特開2010−113961号公報JP 2010-113961 A

そこで、本発明は、斯かる実情に鑑み、外力に対抗し得る十分な剛性を有するとともに、検電作業を容易且つ安全に行うことのできる蓄電装置及び外装体を提供することを課題とする。   Therefore, in view of such a situation, an object of the present invention is to provide a power storage device and an exterior body that have sufficient rigidity that can resist external force and that can perform a voltage detection operation easily and safely.

本発明に係る蓄電装置は、外部端子を有する複数の蓄電素子と、該複数の蓄電素子に重なり、少なくとも前記複数の蓄電素子の前記外部端子を有する面の外側を覆う樹脂製の第一の外装体と、前記第一の外装体の外側を覆う金属製の第二の外装体とを備え、前記第一の外装体は、前記外部端子又は該外部端子に電気的に接続された導電部材の所定部位と対応した位置に第一貫通孔を有し、前記第二の外装体は、前記第一貫通孔に対応した位置に第二貫通孔を有し、前記第二貫通孔の径は、第一貫通孔の径よりも大きい。
Power storage device according to the present invention includes a plurality of storage elements having an external terminal, overlaps the storage element of the plurality of first exterior made of resin covering the outside surface having the external terminals of at least the plurality of power storage elements Body and a metal second exterior body that covers the outside of the first exterior body, the first exterior body being the external terminal or a conductive member electrically connected to the external terminal. The first through hole is located at a position corresponding to the predetermined part, the second exterior body has a second through hole at a position corresponding to the first through hole, and the diameter of the second through hole is It is larger than the diameter of the first through hole.

上記構成の蓄電装置によれば、第一の外装体が剛性を有する金属製の第二の外装体に覆われているため、蓄電素子の外部端子を有する面が電気絶縁性を有する第一の外装体と剛性を有する第二の外装体とによって覆われた状態になる。これにより、蓄電素子の外部端子に対する電気絶縁性を確保しつつ、該蓄電素子(外部端子)を確実に保護することができる。   According to the power storage device having the above configuration, since the first exterior body is covered with the rigid second metal exterior body, the surface having the external terminal of the electrical storage element is electrically insulative. It will be in the state covered with the exterior body and the 2nd exterior body which has rigidity. Thereby, the electrical storage element (external terminal) can be reliably protected while ensuring electrical insulation with respect to the external terminal of the electrical storage element.

そして、第二の外装体の第二貫通孔は、外部端子又は該外部端子に電気的に接続された導電部材の所定部位と対応した位置に設けられた第一の外装体の第一貫通孔と対応しているため、第一貫通孔と同様に、外部端子又は外部端子に接続された導電部材の所定部位と対応する位置に配置される。   And the 2nd through-hole of the 2nd exterior body is the 1st through-hole of the 1st exterior body provided in the position corresponding to the predetermined part of the conductive member electrically connected to the external terminal or the external terminal Therefore, similarly to the first through hole, the external terminal or the conductive member connected to the external terminal is disposed at a position corresponding to the predetermined part.

従って、計測機器に接続された検電用プローブ(検電針)を第一貫通孔と第二貫通孔とに連続的に挿入でき、検電用プローブを外部端子又は外部端子に接続された導電部材に接触させることができる。また、金属製の第二の外装体の有する第二貫通孔の径が第一貫通孔の径よりも大きいため、検電用プローブを挿入したときに、該検電用プローブが第二の外装体と接触することが防止される。これにより、上記構成の蓄電装置は、第一の外装体や第二の外装体を開放させることなく、蓄電素子に対する検電作業を容易且つ安全に行うことができる。   Accordingly, the probe for detecting electric power (electric detector needle) connected to the measuring instrument can be continuously inserted into the first through hole and the second through hole, and the electric probe connected to the external terminal or the external terminal can be electrically connected. The member can be contacted. In addition, since the diameter of the second through hole of the second metal exterior body is larger than the diameter of the first through hole, when the probe for voltage detection is inserted, the probe for voltage detection is Contact with the body is prevented. As a result, the power storage device having the above configuration can easily and safely perform a voltage detection operation on the power storage element without opening the first exterior body or the second exterior body.

本発明の一態様として、前記第一の外装体は、前記第二貫通孔に挿入される凸部であって、内外に貫通した前記第一貫通孔を有する凸部を備える、ようにし得る。   As an aspect of the present invention, the first exterior body may include a convex portion that is inserted into the second through-hole and has the first through-hole penetrating inside and outside.

このようにすれば、第一貫通孔及び第二貫通孔に検電用プローブが挿入された状態で、検電用プローブの周囲に電気絶縁性を有する凸部が存在する。従って、凸部によって検電用プローブと導電性を有する金属製の第二の外装体との接触が確実に阻止される。   If it does in this way, the convex part which has electrical insulation exists in the circumference | surroundings of the probe for electric detection in the state by which the probe for electric detection was inserted in the 1st through-hole and the 2nd through-hole. Therefore, the convex portion reliably prevents contact between the probe for electric detection and the second metal exterior body having conductivity.

この場合、前記凸部は、前記第二の外装体の外面と面一又は略面一になるように前記第二貫通孔に挿入されている、ようにし得る。このようにすれば、凸部が第二貫通孔の内周面の全域又は略全域と対向する。従って、第一貫通孔に検電用プローブを挿入した状態で、検電用プローブが第一貫通孔の中心線に対して傾斜した姿勢になっても、検電用プローブが導電性を有する第二の外装体に接触することがない。   In this case, the convex portion may be inserted into the second through hole so as to be flush with or substantially flush with the outer surface of the second exterior body. If it does in this way, a convex part will oppose the whole region or the substantially whole region of the internal peripheral surface of a 2nd through-hole. Therefore, even if the detection probe is inserted into the first through hole and the posture of the detection probe is inclined with respect to the center line of the first through hole, the detection probe has conductivity. There is no contact with the second exterior body.

また、前記凸部は、前記第二の外装体の外面から外方に突出している、ようにし得る。このようにすれば、凸部が第二貫通孔の内周面の全面と対向する。従って、第一貫通孔に検電用プローブを挿入した状態で、検電用プローブが第一貫通孔の中心線に対して傾斜した姿勢になっても、検電用プローブが導電性を有する第二の外装体に接触することがない。また、凸部の全長が長くなる結果、検電用プローブが第一貫通孔の中心線に対して傾斜した姿勢になりにくく、検電用プローブを外部端子及び導電部材の少なくとも何れか一方に確実に導くことができる。   Moreover, the said convex part can be made to protrude outward from the outer surface of said 2nd exterior body. In this way, the convex portion faces the entire inner peripheral surface of the second through hole. Therefore, even if the detection probe is inserted into the first through hole and the posture of the detection probe is inclined with respect to the center line of the first through hole, the detection probe has conductivity. There is no contact with the second exterior body. Further, as a result of the total length of the convex portion being long, the probe for electric detection is not easily inclined with respect to the center line of the first through-hole, and the probe for electric detection is securely attached to at least one of the external terminal and the conductive member. Can lead to.

さらに、前記凸部の外周面が前記第二貫通孔の内周面と接触又は略接触している、ようにもし得る。このようにすれば、凸部が第二貫通孔に嵌入された状態になる。これにより、第一の外装体と第二の外装体との位置ずれが防止され、第一貫通孔と第二貫通孔との配置が同心又は略同心になる。従って、第一貫通孔に挿入された検電用プローブは、外部端子又は外部端子に接続された導電部材の所定部位に確実に導かれる。   Furthermore, the outer peripheral surface of the convex portion may be in contact with or substantially in contact with the inner peripheral surface of the second through hole. If it does in this way, it will be in the state where the convex part was inserted in the 2nd penetration hole. Thereby, the position shift with a 1st exterior body and a 2nd exterior body is prevented, and arrangement | positioning with a 1st through-hole and a 2nd through-hole becomes concentric or substantially concentric. Therefore, the probe for electric detection inserted in the 1st through-hole is reliably guide | induced to the predetermined part of the electrically-conductive member connected to the external terminal or the external terminal.

これに対し、前記凸部の外周面と前記第二貫通孔の内周面との間に隙間がある、ようにし得る。このようにすれば、第一貫通孔(検電用プローブ)から第二貫通孔(第二の外装体)までの沿面距離を確保でき、絶縁性を高めることができる。また、蓄電装置を組み立てるときに、第一の外装体と第二の外装体の組み付けが容易になる。すなわち、第一の外装体を第二の外装体で覆うときに、凸部が第二貫通孔の内周面と干渉しにくくなるため、第二貫通孔に凸部を挿入し易くなる。従って、第一の外装体と第二の外装体との組み付けが容易になる。   On the other hand, there may be a gap between the outer peripheral surface of the convex portion and the inner peripheral surface of the second through hole. If it does in this way, the creeping distance from a 1st through-hole (probe for electric detection) to a 2nd through-hole (2nd exterior body) can be ensured, and insulation can be improved. Further, when the power storage device is assembled, the first exterior body and the second exterior body can be easily assembled. That is, when the first exterior body is covered with the second exterior body, the convex portion is less likely to interfere with the inner peripheral surface of the second through hole, and thus the convex portion can be easily inserted into the second through hole. Therefore, assembly of the first exterior body and the second exterior body is facilitated.

本発明の別の態様として、前記第一の外装体は、前記複数の蓄電素子を収容する樹脂製収容体である、ようにし得る。このようにすれば、一つ以上の蓄電素子全体が電気絶縁性のある第一の外装体で覆われるため、電気絶縁性が十分に確保される。
As another aspect of the present invention, the first exterior body may be a resin container that houses the plurality of power storage elements. In this way, since one or more power storage elements are entirely covered with the first exterior body having electrical insulation, sufficient electrical insulation is ensured.

また、本発明の更に別の態様として、前記第二の外装体は、前記複数の蓄電素子を収容する金属製収容体である、ようにし得る。このようにすれば、一つ以上の蓄電素子の大部分が剛性のある第二の外装体で覆われるため、蓄電素子を確実に保護することができる。
As still another aspect of the present invention, the second exterior body may be a metal container that houses the plurality of power storage elements. In this way, most of the one or more power storage elements are covered with the rigid second exterior body, so that the power storage elements can be reliably protected.

本発明のさらに別の態様として、前記第一の外装体は、前記複数の蓄電素子を収容する樹脂製収容体であり、前記第二の外装体は、前記第一の外装体を収容する金属製収容体である、ようにし得る。このようにすれば、一つ以上の蓄電素子全体が電気絶縁性のある第一の外装体で覆われた上で、該第一の外装体が剛性のある第二の外装体で覆われるため、電気絶縁性を確保しつつ、蓄電素子を確実に保護することができる。
As still another aspect of the present invention, the first exterior body is a resin housing that houses the plurality of power storage elements, and the second exterior body is a metal that houses the first exterior body. It can be made of a container. In this case, since the entire one or more power storage elements are covered with the first exterior body having electrical insulation, the first exterior body is covered with the rigid second exterior body. In addition, it is possible to reliably protect the power storage element while ensuring electrical insulation.

本発明に係る外装体は、導電部を有する複数の電気機器の外側に配置される外装体であって、前記複数の電気機器と重なり、少なくとも前記複数の電気機器における前記導電部の外側を覆う樹脂製の第一の外装体と、前記第一の外装体の外側を覆う金属製の第二の外装体とを備え、前記第一の外装体は、前記導電部の所定部位と対応した位置に第一貫通孔を有し、前記第二の外装体は、前記第一貫通孔に対応した位置に第二貫通孔を有し、前記第二貫通孔の径は、第一貫通孔の径よりも大きい。 An exterior body according to the present invention is an exterior body disposed outside a plurality of electrical devices having a conductive portion, and overlaps the plurality of electrical devices and covers at least the outside of the conductive portion in the plurality of electrical devices. A first exterior body made of resin and a second exterior body made of metal covering the outside of the first exterior body, the first exterior body corresponding to a predetermined portion of the conductive portion The second exterior body has a second through hole at a position corresponding to the first through hole, and the diameter of the second through hole is the diameter of the first through hole. Bigger than.

上記構成の外装体によれば、第一の外装体が剛性を有する金属製の第二の外装体に覆われているため、電気機器の導電部が電気絶縁性を有する第一の外装体と剛性を有する第二の外装体とによって覆われた状態になる。これにより、電気機器の導電部に対する電気絶縁性を確保しつつ、該電気機器(導電部)を確実に保護することができる。   According to the exterior body configured as described above, since the first exterior body is covered with the rigid second metal exterior body, the first exterior body in which the conductive portion of the electrical device has electrical insulation and It will be in the state covered with the 2nd exterior body which has rigidity. Thereby, the electrical device (conductive portion) can be reliably protected while ensuring electrical insulation with respect to the conductive portion of the electrical device.

そして、第二の外装体の第二貫通孔は、導電部の所定部位と対応した位置に設けられた第一の外装体の第一貫通孔と対応しているため、第一貫通孔と同様に、導電部の所定部位と対応する位置に配置される。   And since the 2nd through-hole of a 2nd exterior body respond | corresponds with the 1st through-hole of the 1st exterior body provided in the position corresponding to the predetermined site | part of an electroconductive part, it is the same as that of a 1st through-hole In addition, it is arranged at a position corresponding to a predetermined part of the conductive part.

従って、計測機器に接続された検電用プローブ(検電針)を第一貫通孔と第二貫通孔とに連続的に挿入でき、検電用プローブを導電部に接触させることができる。また、金属製の第二の外装体の有する第二貫通孔の径が第一貫通孔の径よりも大きいため、検電用プローブを挿入したときに、該検電用プローブが第二の外装体と接触することが防止される。これにより、上記構成の蓄電装置は、第一の外装体や第二の外装体を開放させることなく、電気機器に対する検電作業を容易且つ安全に行うことができる。   Accordingly, the probe for voltage detection (voltage detection needle) connected to the measuring device can be continuously inserted into the first through hole and the second through hole, and the probe for voltage detection can be brought into contact with the conductive portion. In addition, since the diameter of the second through hole of the second metal exterior body is larger than the diameter of the first through hole, when the probe for voltage detection is inserted, the probe for voltage detection is Contact with the body is prevented. As a result, the power storage device having the above configuration can easily and safely perform a voltage detection operation on the electrical device without opening the first exterior body or the second exterior body.

この場合、前記第一の外装体は、前記第二貫通孔に挿入される凸部であって、内外に貫通した前記第一貫通孔を有する凸部を備える、ようにし得る。このようにすれば、凸部が第二貫通孔の内周面の全域又は略全域と対向する。従って、第一貫通孔に検電用プローブを挿入した状態で、検電用プローブが第一貫通孔の中心線に対して傾斜した姿勢になっても、検電用プローブが導電性を有する第二の外装体に接触することがない。   In this case, the first exterior body may include a convex portion that is inserted into the second through hole and has the first through hole penetrating inward and outward. If it does in this way, a convex part will oppose the whole region or the substantially whole region of the internal peripheral surface of a 2nd through-hole. Therefore, even if the detection probe is inserted into the first through hole and the posture of the detection probe is inclined with respect to the center line of the first through hole, the detection probe has conductivity. There is no contact with the second exterior body.

以上にように、本発明によれば、外力に対抗し得る十分な剛性を有するとともに、検電作業を容易且つ安全に行うことができるといった優れた効果を奏し得る。   As described above, according to the present invention, it is possible to obtain an excellent effect of having sufficient rigidity capable of resisting an external force and performing an electric detection operation easily and safely.

図1は、本発明の一実施形態に係る蓄電装置(電池モジュール)の全体斜視図である。FIG. 1 is an overall perspective view of a power storage device (battery module) according to an embodiment of the present invention. 図2は、同実施形態に係る蓄電装置(電池モジュール)の分解斜視図である。FIG. 2 is an exploded perspective view of the power storage device (battery module) according to the embodiment. 図3は、同実施形態に係る蓄電装置(電池モジュール)の第一の外装体の分解斜視図である。FIG. 3 is an exploded perspective view of a first exterior body of the power storage device (battery module) according to the embodiment. 図4は、同実施形態に係る蓄電装置(電池モジュール)の第二の外装体の分解斜視図である。FIG. 4 is an exploded perspective view of a second exterior body of the power storage device (battery module) according to the embodiment. 図5は、同実施形態に係る蓄電装置(電池モジュール)の部分拡大断面図であって、図5Aは、フレーム部材が支持部材に重なっていない位置での部分拡大断面図であり、図5Bは、フレーム部材(第二露出部)及び支持部材(第一露出部)重なった位置での部分拡大断面図である。5 is a partially enlarged cross-sectional view of the power storage device (battery module) according to the embodiment, FIG. 5A is a partially enlarged cross-sectional view at a position where the frame member does not overlap the support member, and FIG. FIG. 5 is a partially enlarged cross-sectional view at a position where the frame member (second exposed portion) and the support member (first exposed portion) overlap. 図6は、同実施形態に係る蓄電装置(電池モジュール)の凸部の第二貫通孔に検電用プローブを挿入して外部端子(バスバー)に接触させた状態の部分拡大断面図であって、図6Aは、フレーム部材が支持部材に重なっていない位置での部分拡大断面図であり、図6Bは、フレーム部材(第二露出部)及び支持部材(第一露出部)が重なった位置での部分拡大断面図である。FIG. 6 is a partially enlarged cross-sectional view of a state in which a probe for voltage detection is inserted into the second through hole of the convex portion of the power storage device (battery module) according to the embodiment and is in contact with an external terminal (bus bar). 6A is a partial enlarged cross-sectional view at a position where the frame member does not overlap the support member, and FIG. 6B is a position where the frame member (second exposed portion) and the support member (first exposed portion) overlap. FIG. 図7は、本発明の他実施形態に係る蓄電装置(電池モジュール)の部分拡大断面図である。FIG. 7 is a partially enlarged cross-sectional view of a power storage device (battery module) according to another embodiment of the present invention. 図8は、本発明の別の実施形態に係る蓄電装置(電池モジュール)の部分拡大断面図である。FIG. 8 is a partially enlarged cross-sectional view of a power storage device (battery module) according to another embodiment of the present invention. 図9は、本発明のさらに別の実施形態に係る蓄電装置(電池モジュール)の概略断面図であって、蓄電素子、第一の外装体、及び第二の外装体を模式的に表現した概略断面図である。FIG. 9 is a schematic cross-sectional view of a power storage device (battery module) according to yet another embodiment of the present invention, and is a schematic representation schematically showing a power storage element, a first exterior body, and a second exterior body. It is sectional drawing. 図10は、本発明のさらに別の実施形態に係る蓄電装置(電池モジュール)の概略断面図であって、蓄電素子、第一の外装体、及び第二の外装体を模式的に表現した概略断面図である。FIG. 10 is a schematic cross-sectional view of a power storage device (battery module) according to still another embodiment of the present invention, and is a schematic representation schematically showing a power storage element, a first exterior body, and a second exterior body. It is sectional drawing. 図11は、本発明のさらに別の実施形態に係る蓄電装置(電池モジュール)の概略断面図であって、蓄電素子、第一の外装体、及び第二の外装体を模式的に表現した概略断面図である。FIG. 11 is a schematic cross-sectional view of a power storage device (battery module) according to still another embodiment of the present invention, and is a schematic representation schematically showing a power storage element, a first exterior body, and a second exterior body. It is sectional drawing. 図12は、本発明のさらに別の実施形態に係る蓄電装置(電池モジュール)の概略断面図であって、蓄電素子、第一の外装体、及び第二の外装体を模式的に表現した概略断面図である。FIG. 12 is a schematic cross-sectional view of a power storage device (battery module) according to still another embodiment of the present invention, which schematically represents a power storage element, a first exterior body, and a second exterior body. It is sectional drawing. 図13は、本発明のさらに別の実施形態に係る蓄電装置の概略部分拡大断面図である。FIG. 13 is a schematic partial enlarged cross-sectional view of a power storage device according to still another embodiment of the present invention. 図14は、本発明のさらに別の実施形態に係る蓄電装置の概略部分拡大断面図であって、図14Aは、第一の外装体と第二の外装体とが積層状態で形成され、第一貫通孔を有する凸部が第二貫通孔の内周面と密接した蓄電装置の概略部分拡大断面図であり、図14Bは、第一の外装体と第二の外装体とが積層状態で形成され、第一貫通孔と第二貫通孔とが連続して段付き穴を構成した蓄電装置の概略部分拡大断面図である。FIG. 14 is a schematic partial enlarged cross-sectional view of a power storage device according to still another embodiment of the present invention. FIG. 14A shows a first exterior body and a second exterior body formed in a stacked state, FIG. 14B is a schematic partial enlarged cross-sectional view of the power storage device in which the convex portion having one through hole is in close contact with the inner peripheral surface of the second through hole, and FIG. 14B shows the first exterior body and the second exterior body in a stacked state. It is a schematic partial expanded sectional view of the electrical storage apparatus which was formed and the 1st through-hole and the 2nd through-hole comprised the stepped hole continuously.

以下、本発明の一実施形態に係る蓄電装置について、添付図面を参照しつつ説明する。   Hereinafter, a power storage device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

蓄電装置は、図1に示す如く、第一の外装体3と、第一の外装体3を覆う第二の外装体4とを有する。より具体的に説明する。蓄電装置1は、図2に示す如く、外部端子21を有する一つ以上の蓄電素子2と、少なくとも蓄電素子2の外部端子21を有する面の外側を覆う樹脂製の第一の外装体3と、該第一の外装体3の外側を覆う金属製の第二の外装体4とを備える。   As illustrated in FIG. 1, the power storage device includes a first exterior body 3 and a second exterior body 4 that covers the first exterior body 3. This will be described more specifically. As shown in FIG. 2, the power storage device 1 includes at least one power storage element 2 having an external terminal 21, and a resin-made first exterior body 3 that covers at least the outer surface of the power storage element 2 having the external terminal 21. And a metal second exterior body 4 that covers the outside of the first exterior body 3.

また、本実施形態に係る蓄電装置1は、上記構成に加え、蓄電素子2に接続される信号ライン5と、第一の外装体3に収容された蓄電素子2上に配置される支持部材6と、信号ライン5を介して蓄電素子2に電気的に接続される監視装置7であって、蓄電素子2の電気的な監視を行う監視装置7と、監視装置7と蓄電素子2との間に配線される信号ライン5を保持するフレーム部材8とを備える。さらに、本実施形態に係る蓄電装置1は、蓄電素子2を冷却するヒートシンク9を備える。   In addition to the above configuration, the power storage device 1 according to the present embodiment includes a signal line 5 connected to the power storage element 2 and a support member 6 disposed on the power storage element 2 accommodated in the first exterior body 3. And a monitoring device 7 electrically connected to the power storage element 2 via the signal line 5, and a monitoring device 7 that electrically monitors the power storage element 2, and between the monitoring device 7 and the power storage element 2. And a frame member 8 for holding the signal line 5 wired to the cable. Furthermore, the power storage device 1 according to this embodiment includes a heat sink 9 that cools the power storage element 2.

蓄電素子2には、充放電可能な二次電池(本実施形態においては、リチウムイオン二次電池)が採用されている。なお、蓄電素子2に二次電池が採用されるに伴い、以下の説明において、蓄電装置1を電池モジュールといい、蓄電素子2を電池セルという。   The storage element 2 employs a chargeable / dischargeable secondary battery (a lithium ion secondary battery in the present embodiment). In addition, as a secondary battery is adopted as the electricity storage element 2, in the following description, the electricity storage device 1 is referred to as a battery module, and the electricity storage element 2 is referred to as a battery cell.

電池セル2は、正極板及び負極板を含む電極体(図示しない)を収容した電槽20と、電槽20の外側に配置された外部端子21,21とを備える。本実施形態において、電槽20は、六面体状に形成されている。すなわち、電池セル2には、角形電池が採用されている。電池セル2は、外部端子21,21として、正極用の外部端子21と、負極用の外部端子21とを備える。正極用の外部端子21及び負極用の外部端子21は、電槽20の外面を構成する六面のうちの一面(以下、この面を天面という。)上に配置される。   The battery cell 2 includes a battery case 20 that houses an electrode body (not shown) including a positive electrode plate and a negative electrode plate, and external terminals 21 and 21 that are disposed outside the battery case 20. In the present embodiment, the battery case 20 is formed in a hexahedral shape. That is, the battery cell 2 is a square battery. The battery cell 2 includes an external terminal 21 for a positive electrode and an external terminal 21 for a negative electrode as external terminals 21 and 21. The positive electrode external terminal 21 and the negative electrode external terminal 21 are arranged on one of six surfaces constituting the outer surface of the battery case 20 (hereinafter, this surface is referred to as a top surface).

本実施形態に係る電池モジュール1は、電池セル2を複数備える。複数の電池セル2は、縦横に整列して配置される。すなわち、複数の電池セル2は、多行多列(図に示す電池モジュール1においては二行十列)に配置されている。これに伴い、電池モジュール1は、電池セル2,2同士を電気的に接続する導電部材であるバスバー22を備える。バスバー22は、隣り合う電池セル2の正極用の外部端子21と負極用の外部端子21とを接続する。バスバー22には、外部端子21に対してネジ止めによって接続されるものや、外部端子21に対して溶接によって接続されるものが採用され得る。本実施形態において、外部端子21に溶接されるバスバー22が採用されている。これにより、複数の電池セル2は、電気的に直列接続され、大容量の電池を構成している。   The battery module 1 according to this embodiment includes a plurality of battery cells 2. The plurality of battery cells 2 are arranged vertically and horizontally. That is, the plurality of battery cells 2 are arranged in multiple rows and multiple columns (two rows and ten columns in the battery module 1 shown in the figure). Accordingly, the battery module 1 includes a bus bar 22 that is a conductive member that electrically connects the battery cells 2 and 2. The bus bar 22 connects the positive external terminal 21 and the negative external terminal 21 of the adjacent battery cells 2. The bus bar 22 may be one that is connected to the external terminal 21 by screws or one that is connected to the external terminal 21 by welding. In the present embodiment, a bus bar 22 welded to the external terminal 21 is employed. Thereby, the some battery cell 2 is electrically connected in series, and comprises the battery of large capacity.

第一の外装体3は、少なくとも電池セル2の天面と対向する隔壁を有する。本実施形態に係る第一の外装体3は、一つ以上の電池セル2を収容する樹脂製収容体である。すなわち、第一の外装体3は、樹脂成型品であり、複数の電池セル2を収容する空間を画定している。   The first exterior body 3 has at least a partition wall facing the top surface of the battery cell 2. The first exterior body 3 according to the present embodiment is a resin container that houses one or more battery cells 2. That is, the first exterior body 3 is a resin molded product and defines a space for accommodating the plurality of battery cells 2.

より具体的に説明する。第一の外装体3は、図3に示す如く、第一方向(図に示すZ軸方向)に第一端及び第二端を有する周壁部300であって、第一端で開口し、複数の電池セル2を一括して包囲する周壁部300と、周壁部300の第二端に接続された底部301とを隔壁として有する樹脂製の本体30と、周壁部300の開口を閉じる隔壁としての閉塞部310を有する樹脂製の蓋体31とを備える。   This will be described more specifically. As shown in FIG. 3, the first exterior body 3 is a peripheral wall portion 300 having a first end and a second end in a first direction (Z-axis direction shown in the figure). As a partition wall that closes the opening of the peripheral wall portion 300, a resin main body 30 having a peripheral wall portion 300 that collectively surrounds the battery cells 2 and a bottom portion 301 that is connected to the second end of the peripheral wall portion 300 as a partition wall. And a resin lid 31 having a closing portion 310.

複数の電池セル2のそれぞれに角形電池が採用され、これらが行列状に配置されるに伴い、本体30の周壁部300は、枠状に形成される。すなわち、周壁部300は、第一方向と直交する第二方向(図に示すX軸方向)に間隔をあけて互いに対向する一対の第一主壁部302,302と、第一方向及び第二方向と直交する第三方向(図に示すY軸方向)に間隔をあけて互いに対向する一対の第一側壁部303,303とを備える。第一主壁部302,302及び第一側壁部303,303は、連続している。これにより、周壁部300は、四角環状に形成される。   A square battery is adopted for each of the plurality of battery cells 2, and as these are arranged in a matrix, the peripheral wall portion 300 of the main body 30 is formed in a frame shape. That is, the peripheral wall portion 300 includes a pair of first main wall portions 302 and 302 facing each other with a gap in a second direction (X-axis direction shown in the drawing) orthogonal to the first direction, and the first direction and the second direction. And a pair of first side wall portions 303 and 303 facing each other with a gap in a third direction (Y-axis direction shown in the figure) perpendicular to the direction. The first main wall portions 302 and 302 and the first side wall portions 303 and 303 are continuous. Thereby, the surrounding wall part 300 is formed in square ring shape.

第一主壁部302,302及び第一側壁部303,303は、四角形状に形成されている。本実施形態において、第一方向における第一主壁部302,302及び第一側壁部303,303の寸法は、同一に設定されている。これに対し、第三方向における第一主壁部302,302の寸法は、第二方向における第一側壁部303,303の寸法よりも長く設定される。これにより、周壁部300は、第一主壁部302,302を長辺にするとともに、第一側壁部303,303を短辺にした四角形状の開口を形成している。   The first main wall portions 302 and 302 and the first side wall portions 303 and 303 are formed in a quadrangular shape. In the present embodiment, the dimensions of the first main wall portions 302 and 302 and the first side wall portions 303 and 303 in the first direction are set to be the same. On the other hand, the dimension of the 1st main wall parts 302 and 302 in a 3rd direction is set longer than the dimension of the 1st side wall parts 303 and 303 in a 2nd direction. Thereby, the peripheral wall part 300 forms the square-shaped opening which made the 1st side wall parts 303 and 303 the short side while making the 1st main wall parts 302 and 302 the long side.

底部301の内面には、複数の電池セル2を行列状に配置した状態で位置決めする位置決用リブ306が設けられている。これにより、複数の電池セル2のそれぞれは、外部端子21,21を蓋体31側にした状態で、平面視行列状に配置される。   Positioning ribs 306 for positioning the plurality of battery cells 2 in a matrix are provided on the inner surface of the bottom portion 301. Thereby, each of the plurality of battery cells 2 is arranged in a matrix in a plan view with the external terminals 21 and 21 facing the lid 31.

蓋体31は、上述の如く、電池セル2の天面と対向する隔壁としての閉塞部310を有し、本体30の開口を閉じた状態で該本体30に対して連結可能に構成される。閉塞部310の平面形状は、周壁部300の開口の形状に即して設定される。本実施形態において、周壁部300が枠状に形成される(四角形状の開口を形成する)ため、閉塞部310は、平面視四角形状に形成される。   As described above, the lid body 31 has the closing portion 310 as a partition wall facing the top surface of the battery cell 2, and is configured to be connectable to the main body 30 with the opening of the main body 30 closed. The planar shape of the closing part 310 is set according to the shape of the opening of the peripheral wall part 300. In the present embodiment, since the peripheral wall portion 300 is formed in a frame shape (forms a quadrangular opening), the closing portion 310 is formed in a square shape in plan view.

第一の外装体3は、内側にある電池セル2の外部端子21,21又は該外部端子21,21に電気的に接続された導電部材の所定部位(検電対象位置)と対応した位置に第一貫通孔311を有する。本実施形態においては、電池セル2の外部端子21の配置された天面と対向する蓋体31(閉塞部310)に、第一貫通孔311が設けられている。第一貫通孔311の孔径は、導通部分の電気的な計測を行う計測機器に接続された検電用プローブを挿通可能に設定される。   The first exterior body 3 is located at a position corresponding to a predetermined portion (electricity detection target position) of the external terminals 21, 21 of the battery cell 2 on the inside or a conductive member electrically connected to the external terminals 21, 21. A first through hole 311 is provided. In the present embodiment, a first through hole 311 is provided in the lid 31 (blocking portion 310) facing the top surface where the external terminal 21 of the battery cell 2 is disposed. The hole diameter of the first through hole 311 is set to allow insertion of a probe for voltage detection connected to a measuring device that performs electrical measurement of a conduction portion.

また、本実施形態に係る第一の外装体3は、第二の外装体4の後述する第二貫通孔410に挿入される凸部312を備える。本実施形態においては、電池セル2の外部端子21の配置された天面と対向する蓋体31(閉塞部310)の外面に凸部312が設けられている。凸部312は、上記第一貫通孔311を有する。すなわち、凸部312は、蓋体31の内側にある電池セル2の外部端子21,21又は該外部端子21,21に電気的に接続された導電部材の所定部位(検電対象位置)と対応した位置に配置される。   In addition, the first exterior body 3 according to the present embodiment includes a convex portion 312 that is inserted into a second through hole 410 described later of the second exterior body 4. In this embodiment, the convex part 312 is provided in the outer surface of the cover body 31 (blocking part 310) facing the top | surface with which the external terminal 21 of the battery cell 2 is arrange | positioned. The convex portion 312 has the first through hole 311. That is, the convex portion 312 corresponds to the external terminals 21 and 21 of the battery cell 2 inside the lid 31 or a predetermined portion (electricity detection target position) of the conductive member electrically connected to the external terminals 21 and 21. It is arranged at the position.

本実施形態において、導電部材であるバスバー22の所定位置が、電池セル2の状態(例えば、電圧や温度等)を測定する検電位置として設定されている。上述の如く、複数の電池セル2の外部端子21,21同士がバスバー22を介して電気的に接続されるため、第一の外装体3の内側において、バスバー22(検電位置)が複数箇所に配置されている。   In the present embodiment, a predetermined position of the bus bar 22 which is a conductive member is set as a power detection position for measuring the state (for example, voltage, temperature, etc.) of the battery cell 2. As described above, since the external terminals 21 and 21 of the plurality of battery cells 2 are electrically connected to each other via the bus bar 22, there are a plurality of bus bars 22 (voltage detection positions) inside the first exterior body 3. Is arranged.

これに伴い、第一の外装体3の蓋体31には、第一貫通孔311が複数設けられている。また、凸部312についても、複数箇所にある外部端子21及び導電部材に対応して複数設けられている。   Accordingly, a plurality of first through holes 311 are provided in the lid 31 of the first exterior body 3. Also, a plurality of convex portions 312 are provided corresponding to the external terminals 21 and the conductive members at a plurality of locations.

凸部312は、第一貫通孔311よりも大径で且つ第二の外装体4の第二貫通孔410の孔径よりも小径である。本実施形態において、凸部312は、第一貫通孔311と同心で形成されている。   The convex portion 312 is larger in diameter than the first through hole 311 and smaller in diameter than the second through hole 410 of the second exterior body 4. In the present embodiment, the convex portion 312 is formed concentrically with the first through hole 311.

凸部312は、第二の外装体4の第二貫通孔410に挿入した状態で、該第二の外装体4の外面と面一又は略面一になるか、或いは第二の外装体4の外面から外方に突出するように形成される。本実施形態において、凸部312は、第一の外装体3を第二の外装体4で覆った状態で、第二の外装体4(後述するカバー41(図4参照))の外面と面一又は略面一になるように形成される。凸部312は、例えば、円柱状、或いは多角柱状に形成される。本実施形態において、凸部312は、円柱状に形成されている。   The convex portion 312 is flush with or substantially flush with the outer surface of the second exterior body 4 while being inserted into the second through-hole 410 of the second exterior body 4, or the second exterior body 4. It is formed so as to protrude outward from the outer surface. In the present embodiment, the convex portion 312 has an outer surface and a surface of the second exterior body 4 (cover 41 (see FIG. 4) described later) in a state where the first exterior body 3 is covered with the second exterior body 4. It is formed to be one or substantially flush. The convex portion 312 is formed in, for example, a cylindrical shape or a polygonal column shape. In this embodiment, the convex part 312 is formed in the column shape.

閉塞部310は、凸部312を躱した位置に第三貫通孔313を有する。第三貫通孔313は、フレーム部材8の後述する支柱部81(図2参照)に対応した位置に配置される。本実施形態において、フレーム部材8に複数の支柱部81が設けられている。これに伴い、閉塞部310は、複数の第三貫通孔313を有する。複数の第三貫通孔313のそれぞれは、対応する支柱部81の外径よりも大径に設定される。すなわち、第三貫通孔313は、支柱部81を挿通(貫通)可能に形成される。   The blocking part 310 has a third through-hole 313 at a position where the convex part 312 faces. The third through-hole 313 is disposed at a position corresponding to a post portion 81 (see FIG. 2) described later of the frame member 8. In the present embodiment, the frame member 8 is provided with a plurality of support columns 81. Accordingly, the closing part 310 has a plurality of third through holes 313. Each of the plurality of third through holes 313 is set to have a larger diameter than the outer diameter of the corresponding column part 81. That is, the third through hole 313 is formed so as to be able to be inserted (penetrated) through the support column 81.

第二の外装体4は、少なくとも電池セル2の天面を覆う第一の外装体3(閉塞部310)と対向する隔壁を有する。本実施形態に係る第二の外装体4は、電池セル2を収容する金属製収容体である。すなわち、第二の外装体4は、第一の外装体3に覆われた電池セル2を該第一の外装体3とともに収容する金属製収容体である。従って、第二の外装体4は、第一の外装体3を収容する空間を画定する。   The second exterior body 4 has a partition wall facing the first exterior body 3 (blocking portion 310) that covers at least the top surface of the battery cell 2. The second exterior body 4 according to the present embodiment is a metal container that houses the battery cells 2. That is, the second exterior body 4 is a metal container that accommodates the battery cell 2 covered with the first exterior body 3 together with the first exterior body 3. Accordingly, the second exterior body 4 defines a space for accommodating the first exterior body 3.

より具体的に説明する。第二の外装体4は、図4に示す如く、第一方向(図に示すZ軸方向)の両端に第一開口及び第二開口を形成する枠体40であって、第一の外装体3を包囲する隔壁としての金属製の枠体40と、枠体40の第一開口を閉じる隔壁としての金属製のカバー41とを備える。   This will be described more specifically. As shown in FIG. 4, the second exterior body 4 is a frame body 40 that forms a first opening and a second opening at both ends in the first direction (the Z-axis direction shown in the figure). 3, a metal frame 40 as a partition wall that surrounds 3, and a metal cover 41 as a partition wall that closes the first opening of the frame body 40.

枠体40は、第一方向に第一開口を画定する第一端(上端)と第二開口を画定する第二端(下端)とを有する。枠体40は、金属プレートを加工したもので、第一の外装体3の周壁部300の外周形状に対応するように形成される。本実施形態において、周壁部300が四角環状に形成されるに伴い、枠体40についても四角環状に形成されている。すなわち、枠体40は、第二方向(図に示すX軸方向)に間隔をあけて互いに対向する一対の第二主壁部400,400と、第三方向(図に示すY軸方向)に間隔をあけて互いに対向する一対の第二側壁部401,401とを備える。   The frame 40 has a first end (upper end) that defines a first opening in a first direction and a second end (lower end) that defines a second opening. The frame body 40 is obtained by processing a metal plate, and is formed so as to correspond to the outer peripheral shape of the peripheral wall portion 300 of the first exterior body 3. In the present embodiment, as the peripheral wall portion 300 is formed in a square ring shape, the frame body 40 is also formed in a square ring shape. That is, the frame 40 has a pair of second main wall portions 400 and 400 facing each other with a gap in the second direction (X-axis direction shown in the drawing) and the third direction (Y-axis direction shown in the drawing). A pair of second side wall portions 401 and 401 facing each other with an interval is provided.

一対の第二主壁部400,400、及び一対の第二側壁部401,401は、それぞれ板状に形成される。一対の第二主壁部400,400の内面、及び一対の第二側壁部401,401の内面は、第一開口及び第二開口の中心線(第一方向に延びる中心線)と平行又は略平行である。従って、一方の第二主壁部400の内面と他方の第二主壁部400の内面とは平行又は略平行であり、一方の第二側壁部401の内面と他方の第二側壁部401の内面とは平行又は略平行である。   The pair of second main wall portions 400, 400 and the pair of second side wall portions 401, 401 are each formed in a plate shape. The inner surfaces of the pair of second main wall portions 400, 400 and the inner surfaces of the pair of second side wall portions 401, 401 are parallel or substantially parallel to the center line (center line extending in the first direction) of the first opening and the second opening. Parallel. Therefore, the inner surface of one second main wall 400 and the inner surface of the other second main wall 400 are parallel or substantially parallel, and the inner surface of one second side wall 401 and the other second side wall 401 are The inner surface is parallel or substantially parallel.

第二主壁部400,400及び第二側壁部401,401は、四角形状に形成されている。本実施形態において、第一方向における第二主壁部400,400及び第二側壁部401,401の寸法(最大寸法)は、同一に設定されている。これに対し、第三方向における第二主壁部400,400の寸法は、第二方向における第二側壁部401,401の寸法よりも長く設定されている。これにより、枠体40は、第二主壁部400,400を長辺にするとともに、第二側壁部401,401を短辺にした四角形状の開口(第一開口、第二開口)を形成している。   The second main wall portions 400 and 400 and the second side wall portions 401 and 401 are formed in a quadrangular shape. In the present embodiment, the dimensions (maximum dimensions) of the second main wall portions 400 and 400 and the second side wall portions 401 and 401 in the first direction are set to be the same. On the other hand, the dimension of the 2nd main wall part 400,400 in a 3rd direction is set longer than the dimension of the 2nd side wall part 401,401 in a 2nd direction. As a result, the frame body 40 has a rectangular opening (first opening, second opening) in which the second main wall portions 400 and 400 have long sides and the second side wall portions 401 and 401 have short sides. doing.

カバー41は、金属プレートをプレス成形したもので、枠体40の第一開口を閉じた状態で、枠体40に連結可能に構成される。カバー41は、図5に示す如く、第一貫通孔311と対応した位置に内外に第二貫通孔410を有する。すなわち、カバー41は、第一の外装体3の内側にある電池セル2の外部端子21,21又は該外部端子21,21に電気的に接続された導電部材の所定部位(検電対象位置)に対応した位置に第二貫通孔410を有する。従って、第二貫通孔410についても、検電対象位置(バスバー22)に対応するように複数箇所に設けられている。なお、第一貫通孔311,凸部312,及び第二貫通孔410は、あくまでも検電対象となるバスバー22の配置に対応して設けられるものであり、必ずしも全てのバスバー22に対応して設けられるものではない。   The cover 41 is formed by press-molding a metal plate, and is configured to be connectable to the frame body 40 in a state where the first opening of the frame body 40 is closed. As shown in FIG. 5, the cover 41 has second through holes 410 inside and outside at positions corresponding to the first through holes 311. That is, the cover 41 has the external terminals 21 and 21 of the battery cell 2 inside the first exterior body 3 or a predetermined portion of the conductive member electrically connected to the external terminals 21 and 21 (detection target position). The second through-hole 410 is provided at a position corresponding to. Therefore, the second through-hole 410 is also provided at a plurality of locations so as to correspond to the detection target position (bus bar 22). The first through-hole 311, the convex portion 312 and the second through-hole 410 are provided corresponding to the arrangement of the bus bars 22 to be detected, and are necessarily provided corresponding to all the bus bars 22. It is not something that can be done.

第二貫通孔410の孔径は、第一貫通孔311の孔径よりも大きく設定される。本実施形態では、凸部312の外周面と第二貫通孔410の内周面との間に隙間が形成されている。すなわち、第二貫通孔410の孔径は、第一の外装体3の凸部312の外径よりも大径に設定されている。これにより、第一貫通孔311に挿入した検電用プローブから導電性を有する第二の外装体4(カバー41)の第二貫通孔410までの沿面距離を確保し、電気絶縁性が高められている。   The hole diameter of the second through hole 410 is set larger than the hole diameter of the first through hole 311. In the present embodiment, a gap is formed between the outer peripheral surface of the convex portion 312 and the inner peripheral surface of the second through hole 410. That is, the hole diameter of the second through hole 410 is set larger than the outer diameter of the convex portion 312 of the first exterior body 3. Thereby, the creeping distance from the probe for electric detection inserted in the 1st through-hole 311 to the 2nd through-hole 410 of the 2nd exterior body 4 (cover 41) which has electroconductivity is ensured, and electrical insulation is improved. ing.

支持部材6は、図2に示す如く、第一の外装体3(周壁部300)内で複数の電池セル2上に配置可能に形成される。より具体的には、支持部材6は、周壁部300の開口内に配置すべく、周壁部300の内周形状に即して形成される。また、支持部材6は、複数の電池セル2の上方に位置するように、周壁部300に支持される(連結される)ようになっている。   As shown in FIG. 2, the support member 6 is formed so as to be disposed on the plurality of battery cells 2 within the first exterior body 3 (the peripheral wall portion 300). More specifically, the support member 6 is formed in accordance with the inner peripheral shape of the peripheral wall portion 300 so as to be disposed in the opening of the peripheral wall portion 300. The support member 6 is supported (connected) by the peripheral wall portion 300 so as to be positioned above the plurality of battery cells 2.

支持部材6には、電池セル2の外部端子21,21及びバスバー22を露呈させる第一露出部60が設けられている。本実施形態において、上述の如く、バスバー22(検電位置)が複数箇所に配置されるに伴い、支持部材6には、複数のバスバー22のそれぞれに対応した位置に第一露出部60が設けられている。より具体的には、本実施形態に係る電池モジュール1は、複数の電池セル2が二行十列に配置されるに伴い、複数のバスバー22は、第三方向に間隔をあけて複数行(三行列)に配置されている。これに伴い、支持部材6の第三方向の両端部及び中央部に、第二方向で整列した複数の第一露出部60が設けられている。   The support member 6 is provided with a first exposed portion 60 that exposes the external terminals 21 and 21 and the bus bar 22 of the battery cell 2. In the present embodiment, as described above, as the bus bars 22 (voltage detection positions) are arranged at a plurality of locations, the support member 6 is provided with the first exposed portions 60 at positions corresponding to the plurality of bus bars 22, respectively. It has been. More specifically, in the battery module 1 according to the present embodiment, as the plurality of battery cells 2 are arranged in two rows and ten columns, the plurality of bus bars 22 are arranged in a plurality of rows at intervals in the third direction ( Arranged in three matrices). Accordingly, a plurality of first exposed portions 60 aligned in the second direction are provided at both end portions and the center portion of the support member 6 in the third direction.

監視装置7は、電子的な制御を行う制御基板と、制御基板を覆う基板ケース70とを備える。制御基板は、CPUやメモリ、信号ライン5(ハーネス)を接続するためコネクタ71が搭載されている。基板ケース70は、コネクタ71を露出させた状態で制御基板全体を包囲する。   The monitoring device 7 includes a control board that performs electronic control and a board case 70 that covers the control board. The control board is equipped with a connector 71 for connecting the CPU, memory, and signal line 5 (harness). The board case 70 surrounds the entire control board with the connector 71 exposed.

フレーム部材8は、信号ライン5の配線経路を画定する。より具体的に説明する。フレーム部材8は、信号ライン5の配線経路を画定するベース80と、ベース80に対して第一方向に交差するように設けられた支柱部81とを備える。   The frame member 8 defines the wiring path of the signal line 5. This will be described more specifically. The frame member 8 includes a base 80 that defines the wiring path of the signal line 5, and a column portion 81 that is provided so as to intersect the base 80 in the first direction.

ベース80は、第一の外装体3内に配置された支持部材6上に配置可能に形成される。ベース80には、支持部材6の第一露出部60を介して電池セル2の外部端子21,21及びバスバー22を露呈させる第二露出部82が設けられている。   The base 80 is formed so as to be disposed on the support member 6 disposed in the first exterior body 3. The base 80 is provided with a second exposed portion 82 that exposes the external terminals 21 and 21 and the bus bar 22 of the battery cell 2 through the first exposed portion 60 of the support member 6.

より具体的に説明する。ベース80は、平面視四角形状に形成されている。本実施形態に係るベース80の第二方向の寸法は、支持部材6の第二方向の寸法と対応している。これに対し、ベース80における第三方向の寸法は、支持部材6の第三方向の寸法よりも短く設定されている。すなわち、ベース80は、支持部材6の第三方向の両端部に設けられた複数の第一露出部60を躱した状態で、支持部材6上に配置可能とされている。これに伴い、本実施形態に係るベース80は、支持部材6の第三方向の中央部で整列する複数の第一露出部60のそれぞれと対応する位置に複数の第二露出部82が設けられている。   This will be described more specifically. The base 80 is formed in a square shape in plan view. The dimension in the second direction of the base 80 according to the present embodiment corresponds to the dimension in the second direction of the support member 6. On the other hand, the dimension of the base 80 in the third direction is set shorter than the dimension of the support member 6 in the third direction. That is, the base 80 can be disposed on the support member 6 in a state where the plurality of first exposed portions 60 provided at both ends in the third direction of the support member 6 are sandwiched. Accordingly, the base 80 according to the present embodiment is provided with a plurality of second exposed portions 82 at positions corresponding to the plurality of first exposed portions 60 aligned at the center in the third direction of the support member 6. ing.

ベース80は、第一方向に第一面と反対側の第二面とを有する。ベース80には、信号ライン5を配線する配線経路が設定されている。そして、ベース80の第二面上に監視装置7を配置する制御装置配置領域83が設定されている。配線経路は、制御装置配置領域83(制御装置配置領域83に配置された監視装置7のコネクタ71)を始点にして設定される。   The base 80 has a first surface and a second surface opposite to the first surface in the first direction. In the base 80, a wiring path for wiring the signal line 5 is set. A control device placement area 83 for placing the monitoring device 7 on the second surface of the base 80 is set. The wiring path is set starting from the control device arrangement area 83 (the connector 71 of the monitoring device 7 arranged in the control apparatus arrangement area 83).

本実施形態において、信号ライン5(ハーネス)は、複数のリード線50の集合体であり、複数のリード線50の始端が接続されたコネクタ51であって、監視装置7のコネクタ71に接続されるコネクタ51を備える。信号ライン5(複数のリード線50)のそれぞれは、対応するバスバー22(第一露出部60から露呈するバスバー22、或いは第一露出部60を介して第二露出部82から露呈するバスバー22)の配置に応じて経路を外れて該バスバー22に接続される。本実施形態において、制御装置配置領域83が第三方向に間隔をあけて二箇所に設定されている。これに伴い、ベース80には、二つの制御装置配置領域83,83のそれぞれに対応する配線経路が設定されている。   In the present embodiment, the signal line 5 (harness) is an assembly of a plurality of lead wires 50 and is a connector 51 to which the start ends of the plurality of lead wires 50 are connected, and is connected to the connector 71 of the monitoring device 7. Connector 51 is provided. Each of the signal lines 5 (the plurality of lead wires 50) has a corresponding bus bar 22 (the bus bar 22 exposed from the first exposed portion 60 or the bus bar 22 exposed from the second exposed portion 82 via the first exposed portion 60). Depending on the arrangement, the path is deviated and connected to the bus bar 22. In the present embodiment, the controller arrangement areas 83 are set at two places with a gap in the third direction. Accordingly, wiring paths corresponding to the two control device arrangement areas 83 and 83 are set in the base 80.

支柱部81は、ベース80と交差した状態で第一方向に延びている。本実施形態において、第三貫通孔313は、複数箇所に設けられる。これに伴い、支柱部81は、第三貫通孔313の配置に対応するように、複数設けられている。支柱部81は、ベース80の第一面側で支持部材6に当接し、ベース80の第二面側で蓋体31の第三貫通孔313に挿通されて外方に突出するように形成される。これにより、カバー41が枠体40の第一開口を閉じた状態で、支柱部81がカバー41と支持部材6とに挟まれた状態になるように構成される。   The support column 81 extends in the first direction while intersecting the base 80. In the present embodiment, the third through holes 313 are provided at a plurality of locations. Accordingly, a plurality of support columns 81 are provided so as to correspond to the arrangement of the third through holes 313. The support column 81 abuts against the support member 6 on the first surface side of the base 80 and is formed so as to be inserted through the third through hole 313 of the lid 31 on the second surface side of the base 80 and project outward. The Thus, the support column 81 is configured to be sandwiched between the cover 41 and the support member 6 with the cover 41 closing the first opening of the frame body 40.

ヒートシンク9は、プレート状に形成され、第二の外装体4における枠体40の第二開口を閉塞可能に構成される。ヒートシンク9は、表面積を広くするために放熱フィンを備えた空冷タイプのものや、内部に冷却水を流通させる水冷タイプのものを採用でき、本実施形態においては、水冷タイプのものが採用される。本実施形態において、ヒートシンク9は、枠体40の第二開口を閉塞した状態で、第一の外装体3(本体30の底部301)と接触し、第一の外装体3内にある電池セル2からの熱を吸収するようになっている。なお、本実施形態において、第二の外装体4における枠体40の第二開口をヒートシンク9で閉塞したが、電池セル2の発熱量が小さい場合には、ヒートシンク9を設けることなく、枠体40の第二開口をプレート状の閉塞部材で閉塞してもよい。   The heat sink 9 is formed in a plate shape, and is configured to be able to close the second opening of the frame body 40 in the second exterior body 4. As the heat sink 9, an air-cooled type having heat radiation fins to increase the surface area or a water-cooled type in which cooling water is circulated inside can be adopted. In this embodiment, a water-cooled type is adopted. . In the present embodiment, the heat sink 9 is in contact with the first exterior body 3 (the bottom 301 of the main body 30) in a state where the second opening of the frame body 40 is closed, and is a battery cell in the first exterior body 3. The heat from 2 is absorbed. In the present embodiment, the second opening of the frame body 40 in the second exterior body 4 is closed by the heat sink 9. However, when the heat generation amount of the battery cell 2 is small, the frame body is not provided without providing the heat sink 9. The 40 second openings may be closed with a plate-like closing member.

本実施形態に係る電池モジュール1は、以上の通りである。かかる電池モジュール1によれば、第一の外装体3が剛性を有する金属製の第二の外装体4に覆われているため、電池セル2の外部端子21を有する天面が電気絶縁性を有する第一の外装体3と剛性を有する第二の外装体4とによって覆われた状態になる。これにより、電池セル2の外部端子21に対する電気絶縁性を確保しつつ、該電池セル2(外部端子21)を確実に保護することができる。   The battery module 1 according to the present embodiment is as described above. According to the battery module 1, since the first exterior body 3 is covered with the rigid second metal exterior body 4, the top surface of the battery cell 2 having the external terminals 21 is electrically insulating. It will be in the state covered with the 1st exterior body 3 which has, and the 2nd exterior body 4 which has rigidity. Thereby, the battery cell 2 (external terminal 21) can be reliably protected while ensuring electrical insulation with respect to the external terminal 21 of the battery cell 2.

そして、第二の外装体4の第二貫通孔410は、検電対象位置(本実施形態においてはバスバー22の所定部位)と対応した位置に設けられた第一の外装体3の第一貫通孔311と対応しているため、第一貫通孔311と同様に、検電対象位置と対応する位置に配置される。   And the 2nd through-hole 410 of the 2nd exterior body 4 is the 1st penetration of the 1st exterior body 3 provided in the position corresponding to electric power detection object position (this embodiment predetermined part of the bus-bar 22). Since it corresponds to the hole 311, it is arranged at a position corresponding to the power detection target position, similarly to the first through hole 311.

従って、図6に示す如く、計測機器に接続された検電用プローブ(検電針)Pを第一貫通孔311と第二貫通孔410とに連続的に挿入でき、検電用プローブPを検電対象位置に接触させることができる。また、金属製の第二の外装体4の有する第二貫通孔410の径が第一貫通孔311の径よりも大きいため、検電用プローブPを挿入したときに、該検電用プローブPが第二の外装体4(カバー41)と接触することが防止される。   Therefore, as shown in FIG. 6, a voltage detection probe (voltage detection needle) P connected to the measuring device can be continuously inserted into the first through hole 311 and the second through hole 410, and the voltage detection probe P is It can be brought into contact with the detection target position. Further, since the diameter of the second through-hole 410 included in the metal second exterior body 4 is larger than the diameter of the first through-hole 311, when the detection probe P is inserted, the detection probe P Is prevented from coming into contact with the second exterior body 4 (cover 41).

これにより、上記構成の電池モジュール1は、第一の外装体3や第二の外装体4を開放させることなく、電池セル2やバスバー22等の導通部位に対する検電作業を容易且つ安全に行うことができる。   Thereby, the battery module 1 having the above-described configuration easily and safely performs a voltage detection operation on the conductive portion such as the battery cell 2 and the bus bar 22 without opening the first exterior body 3 and the second exterior body 4. be able to.

特に、本実施形態に係る電池モジュール1において、凸部312は、第二の外装体4の外面と面一又は略面一になるように第二貫通孔410に挿入されているため、第二貫通孔410の内周面の全域と対向する。従って、第一貫通孔311に挿入した検電用プローブPが第一貫通孔311の中心線に対して傾斜した姿勢になっても、検電用プローブPが導電性を有する第二の外装体4(カバー41)に接触することがない。   In particular, in the battery module 1 according to the present embodiment, the convex portion 312 is inserted into the second through hole 410 so as to be flush with or substantially flush with the outer surface of the second exterior body 4. It faces the entire inner peripheral surface of the through hole 410. Therefore, even if the detection probe P inserted into the first through hole 311 is inclined with respect to the center line of the first through hole 311, the second exterior body in which the detection probe P has conductivity. 4 (cover 41) is not touched.

また、本実施形態に係る電池モジュール1において、凸部312の外周面と、第二の外装体4の第二貫通孔410の内周面との間に隙間があるため、第一貫通孔311に挿入した検電用プローブPに対する電気絶縁性が高まったものになる。   In the battery module 1 according to this embodiment, since there is a gap between the outer peripheral surface of the convex portion 312 and the inner peripheral surface of the second through hole 410 of the second exterior body 4, the first through hole 311. The electrical insulation with respect to the probe P for electric detection inserted in is improved.

さらに、本実施形態に係る電池モジュール1において、第一の外装体3は、電池セル2を収容する樹脂製収容体であり、第二の外装体4は、第一の外装体4を収容する金属製収容体であるため、電池セル2全体が電気絶縁性のある第一の外装体3で覆われた上で、該第一の外装体3が剛性のある第二の外装体4で覆われる。これにより、本実施形態に係る電池モジュール1は、電気絶縁性を確保しつつ、電池セル2を確実に保護することができる。   Furthermore, in the battery module 1 according to the present embodiment, the first exterior body 3 is a resin housing that houses the battery cells 2, and the second exterior body 4 houses the first exterior body 4. Since it is a metal container, the entire battery cell 2 is covered with the first outer casing 3 having electrical insulation, and then the first outer casing 3 is covered with the rigid second outer casing 4. Is called. Thereby, the battery module 1 which concerns on this embodiment can protect the battery cell 2 reliably, ensuring electrical insulation.

なお、本発明は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で適宜変更を加え得ることは勿論である。   In addition, this invention is not limited to the said embodiment, Of course, it can add suitably in the range which does not deviate from the summary of this invention.

上記実施形態において、電池セル2が複数設けられたが、これに限定されない。例えば、電池セル2は、一つであってもよい。すなわち、電池セル2は、要求される電力に応じた電力を供給できる数で設けられればよい。   In the said embodiment, although the battery cell 2 was provided with two or more, it is not limited to this. For example, the battery cell 2 may be one. That is, the battery cell 2 should just be provided in the number which can supply the electric power according to the electric power requested | required.

上記実施形態において、導電部材であるバスバー22の所定位置を検電位置に設定したが、これに限定されない。例えば、電池セル2の外部端子21,21の所定位置を検電位置に設定してもよい。また、電池セル2が一つ設けられる場合には、電池セル2同士を接続するバスバー22が存在しない。従って、このような場合には、電池セル2の外部端子21,21や該外部端子21,21に接続されるケーブル(或いは、ケーブルに接続された端子)の所定位置を検電位置に設定してもよい。すなわち、外部端子21,21又は外部端子21,21に電気的に接続された導電部材の所定位置(部位)を検電位置に設定すればよい。この場合においても、第二の外装体4の隔壁に設けられる第二貫通孔410は、検電位置の配置に合わせて設けられ、第一の外装体3の凸部312は、第二貫通孔410に挿入可能に配置される。   In the said embodiment, although the predetermined position of the bus-bar 22 which is an electroconductive member was set to the electric power detection position, it is not limited to this. For example, a predetermined position of the external terminals 21 and 21 of the battery cell 2 may be set as a detection position. When one battery cell 2 is provided, there is no bus bar 22 for connecting the battery cells 2 to each other. Therefore, in such a case, a predetermined position of the external terminals 21 and 21 of the battery cell 2 and the cables connected to the external terminals 21 and 21 (or terminals connected to the cables) is set as a detection position. May be. That is, a predetermined position (part) of the conductive member electrically connected to the external terminals 21 and 21 or the external terminals 21 and 21 may be set as a detection position. Also in this case, the second through-hole 410 provided in the partition wall of the second exterior body 4 is provided in accordance with the arrangement of the detection position, and the convex portion 312 of the first exterior body 3 is the second through-hole. 410 is arranged to be insertable.

上記実施形態において、複数のバスバー22の配置に合わせて複数箇所に検電位置が設定されたが、これに限定されない。例えば、複数の電池セル2が装備される(バスバー22が複数箇所に装備される)場合であっても、特定の一箇所或いは特定の複数箇所を検電位置に設定してもよい。また、電池セル2が一つの場合においては、外部端子21,21又は外部端子21,21に接続される導電部材の配置に合わせて特定の一箇所を検電位置に設定してもよい。この場合においても、第二の外装体4の隔壁に設けられる第二貫通孔410は、検電位置の配置に合わせて設けられ、第一の外装体3の凸部312は、第二貫通孔410に挿入可能に配置される。   In the above embodiment, the detection positions are set at a plurality of locations in accordance with the arrangement of the plurality of bus bars 22, but the present invention is not limited to this. For example, even when a plurality of battery cells 2 are equipped (the bus bar 22 is equipped at a plurality of places), one specific place or a plurality of specific places may be set as the detection position. In the case where there is one battery cell 2, a specific location may be set as a detection position according to the arrangement of the conductive members connected to the external terminals 21, 21 or the external terminals 21, 21. Also in this case, the second through-hole 410 provided in the partition wall of the second exterior body 4 is provided in accordance with the arrangement of the detection position, and the convex portion 312 of the first exterior body 3 is the second through-hole. 410 is arranged to be insertable.

上記実施形態において、第一の外装体3の凸部312が円柱状に形成されたが、これに限定されない。例えば、凸部312は、多角形状に形成されてもよい。すなわち、凸部312の形態は、第二の外装体4の第二貫通孔410に挿入可能であれば、適宜変更可能である。また、第一貫通孔311は、凸部312と同心に設けられたものに限定されず、例えば、凸部312の中心に対して偏心した位置に設けられてもよい。   In the said embodiment, although the convex part 312 of the 1st exterior body 3 was formed in the column shape, it is not limited to this. For example, the convex portion 312 may be formed in a polygonal shape. That is, the form of the convex portion 312 can be changed as appropriate as long as it can be inserted into the second through hole 410 of the second exterior body 4. In addition, the first through hole 311 is not limited to the one provided concentrically with the convex portion 312, and may be provided at a position eccentric with respect to the center of the convex portion 312, for example.

上記実施形態において、第一の外装体3の凸部312が第二の外装体4の第二貫通孔410に挿入された状態で該第二の外装体4(カバー41)の外面と面一又は略面一になるように形成されたが、これに限定されない。例えば、図7に示す如く、第一の外装体3の凸部312が第二の外装体4の第二貫通孔410に挿入された状態で該第二の外装体4(カバー41)の外面から突出するように形成されてもよい。このようにすれば、凸部312が第二貫通孔410の内周面の全面と対向する。従って、第一貫通孔311に検電用プローブPを挿入した状態で、検電用プローブPが第一貫通孔311の中心線に対して傾斜した姿勢になっても、検電用プローブPが導電性を有する第二の外装体4に接触することがない。また、凸部312の全長が長くなる結果、検電用プローブPが第一貫通孔311の中心線に対して傾斜した姿勢になりにくく、検電用プローブPを外部端子21,21及び導電部材(バスバー22)の少なくとも何れか一方に確実に導くことができる。   In the above embodiment, the convex portion 312 of the first exterior body 3 is flush with the outer surface of the second exterior body 4 (cover 41) in a state where the convex portion 312 is inserted into the second through hole 410 of the second exterior body 4. Or although formed so that it may become substantially flush, it is not limited to this. For example, as shown in FIG. 7, the outer surface of the second exterior body 4 (cover 41) with the convex portion 312 of the first exterior body 3 inserted into the second through hole 410 of the second exterior body 4. It may be formed so as to protrude from. In this way, the convex portion 312 faces the entire inner peripheral surface of the second through hole 410. Therefore, even if the detection probe P is inclined with respect to the center line of the first through hole 311 with the detection probe P inserted into the first through hole 311, the detection probe P is There is no contact with the second exterior body 4 having conductivity. Further, as a result of the total length of the convex portion 312 being long, the detection probe P is unlikely to be inclined with respect to the center line of the first through hole 311, and the detection probe P is connected to the external terminals 21, 21 and the conductive member. It can be reliably guided to at least one of (bus bar 22).

上記実施形態において、第二貫通孔410の孔径が凸部312の外径よりも大径に設定され、第二貫通孔410に凸部312が挿入された状態で、第二貫通孔410を画定する内周面と凸部312の外周面との間に隙間が形成されたが、これに限定されない。例えば、図8に示す如く、凸部312の外周面が前記第二貫通孔410の内周面と接触又は略接触するようにしてもよい。このようにすれば、凸部312と第二貫通孔410とが嵌合された状態になる。これにより、第一の外装体3と第二の外装体4との位置ずれが防止される。その結果、第二貫通孔410と第一貫通孔311との配置が同心又は略同心になり、検電用プローブPを外部端子21,21又は外部端子21,21に接続された導電部材の所定部位に確実に導くことができる。なお、この場合、凸部312の外周全周と第二貫通孔410の内周全周とを接触又は略接触させてもよいが、例えば、凸部312が多角柱状に形成される場合には、凸部312の外周の複数箇所に形成される稜線が第二貫通孔410の内周面に線接触するようにしてもよい。   In the above embodiment, the second through hole 410 is defined in a state where the hole diameter of the second through hole 410 is set larger than the outer diameter of the convex part 312 and the convex part 312 is inserted into the second through hole 410. A gap is formed between the inner peripheral surface to be formed and the outer peripheral surface of the convex portion 312, but is not limited to this. For example, as shown in FIG. 8, the outer peripheral surface of the convex portion 312 may contact or substantially contact the inner peripheral surface of the second through hole 410. If it does in this way, it will be in the state where the convex part 312 and the 2nd through-hole 410 were fitted. Thereby, the position shift with the 1st exterior body 3 and the 2nd exterior body 4 is prevented. As a result, the arrangement of the second through-hole 410 and the first through-hole 311 is concentric or substantially concentric, and the conductive member connected to the external terminal 21, 21 or the external terminal 21, 21 is connected to the predetermined probe. Can be reliably guided to the site. In this case, the entire outer periphery of the convex portion 312 and the entire inner periphery of the second through-hole 410 may be contacted or substantially contacted. For example, when the convex portion 312 is formed in a polygonal column shape, Ridge lines formed at a plurality of locations on the outer periphery of the convex portion 312 may be in line contact with the inner peripheral surface of the second through-hole 410.

上記実施形態において、第一の外装体3が樹脂製収容体とされるとともに、第二の外装体4が金属製収容体とされたが、これに限定されない。例えば、図9に示す如く、第一の外装体3が蓄電素子2の外部端子21の有する面を覆うカバーとされ、第二の外装体4がカバー状の第一の外装体3の外側を覆う別のカバーとされてもよい。この場合、第一の外装体3が蓄電素子2に直接固定され、第二の外装体4が蓄電素子2又は第一の外装体3に固定されることで、蓄電素子2、第一の外装体3、及び第二の外装体4の相対的な配置が維持される。   In the said embodiment, while the 1st exterior body 3 was made into the resin container, and the 2nd exterior body 4 was made into the metal container, it is not limited to this. For example, as shown in FIG. 9, the first exterior body 3 is a cover that covers the surface of the external terminal 21 of the power storage element 2, and the second exterior body 4 covers the outside of the cover-like first exterior body 3. Another cover may be used. In this case, the 1st exterior body 3 is directly fixed to the electrical storage element 2, and the 2nd exterior body 4 is fixed to the electrical storage element 2 or the 1st exterior body 3, Therefore The electrical storage element 2, 1st exterior body The relative arrangement of the body 3 and the second exterior body 4 is maintained.

また、図10に示す如く、第一の外装体3が蓄電素子2の外部端子21の有する面を覆うカバーとされ、第二の外装体4が第一の外装体3とともに蓄電素子2全体を包囲する(収容する)金属製収容体とされてもよい。この場合、第一の外装体3は、蓄電素子2又は第二の外装体4に固定されることで、蓄電素子2、第一の外装体3、及び第二の外装体4の相対的な配置が維持される。   Further, as shown in FIG. 10, the first exterior body 3 is a cover that covers the surface of the external terminal 21 of the electricity storage element 2, and the second exterior body 4 together with the first exterior body 3 covers the entire electricity storage element 2. It may be a metal container that surrounds (accommodates). In this case, the first exterior body 3 is fixed to the electricity storage element 2 or the second exterior body 4 so that the electrical storage element 2, the first exterior body 3, and the second exterior body 4 are relative to each other. Placement is maintained.

さらに、図11に示す如く、第一の外装体3が蓄電素子2の全体を包囲する(収容する)樹脂製収容体とされ、第二の外装体4が第一の外装体3における蓄電素子2の外部端子21の有する面を覆う部分をさらに覆うカバーとされてもよい。この場合、第二の外装体4が第一の外装体3に固定されることで、蓄電素子2、第一の外装体3、及び第二の外装体4の相対的な配置が維持される。   Furthermore, as shown in FIG. 11, the first exterior body 3 is a resin container that surrounds (accommodates) the entire power storage element 2, and the second exterior body 4 is the power storage element in the first exterior body 3. The cover that further covers the portion covering the surface of the two external terminals 21 may be used. In this case, by fixing the second exterior body 4 to the first exterior body 3, the relative arrangement of the power storage element 2, the first exterior body 3, and the second exterior body 4 is maintained. .

上記実施形態において、複数の蓄電素子(電池セル)2のそれぞれの外部端子21が、第一の外装体3の蓋体31の閉塞部310と対向するように整列して配置されたが、これに限定されない。例えば、蓄電素子2が複数設けられる場合、図12に示す如く、複数の蓄電素子2を所定数毎でブロックA,Bにし、蓄電素子2の外部端子21がブロックA,B毎で異なる方向に突出するように、複数の蓄電素子2を配置してもよい。この場合、第一の外装体3は、各ブロックA,Bにおける蓄電素子2の外部端子21の有する面を覆い、また、第二の外装体4がその第一の外装体3を覆うように設けられる。そして、第一の外装体3及び第二の外装体4には、各ブロックA,Bの蓄電素子2の外部端子21等の配置に対応して第一貫通孔311及び第二貫通孔410が設けられる。これにより、上記実施形態と同様の作用及び効果を奏することができる。   In the above embodiment, the external terminals 21 of the plurality of power storage elements (battery cells) 2 are arranged so as to face the closing portion 310 of the lid body 31 of the first exterior body 3. It is not limited to. For example, when a plurality of power storage elements 2 are provided, as shown in FIG. 12, the plurality of power storage elements 2 are made into blocks A and B every predetermined number, and the external terminals 21 of the power storage elements 2 are in different directions for each of the blocks A and B. You may arrange | position the several electrical storage element 2 so that it may protrude. In this case, the first exterior body 3 covers the surface of the external terminal 21 of the power storage element 2 in each of the blocks A and B, and the second exterior body 4 covers the first exterior body 3. Provided. The first exterior body 3 and the second exterior body 4 have a first through hole 311 and a second through hole 410 corresponding to the arrangement of the external terminals 21 and the like of the storage elements 2 of the blocks A and B. Provided. Thereby, there can exist an effect | action and effect similar to the said embodiment.

上記各態様において、第一の外装体3が第一貫通孔311を有する凸部312を備えたが、これに限定されない。例えば、図13に示す如く、第一の外装体3(蓋体31)が凸部312を備えることなく、内外に貫通した第一貫通孔311のみを備えてもよい。この場合においても、第一の外装体3の第一貫通孔311の孔径よりも、第二の外装体3の第二貫通孔410の孔径が大径になるように、第一の外装体3を形成することは勿論である。このようにしても、計測機器に接続された検電用プローブ(検電針)Pを第一貫通孔311と第二貫通孔410とに連続的に挿入でき、検電用プローブPを外部端子21又は外部端子21に接続されたバスバー22等の導電部材に接触させることができる。また、金属製の第二の外装体4の有する第二貫通孔410の径が第一貫通孔311の径よりも大きいため、検電用プローブPを挿入したときに、該検電用プローブPが導電性を有する第二の外装体4と接触することが防止され、短絡事故等を防止することができる。   In each said aspect, although the 1st exterior body 3 was provided with the convex part 312 which has the 1st through-hole 311, it is not limited to this. For example, as shown in FIG. 13, the first exterior body 3 (lid body 31) may include only the first through-hole 311 penetrating inward and outward without including the convex portion 312. Also in this case, the first exterior body 3 is set so that the diameter of the second through hole 410 of the second exterior body 3 is larger than the diameter of the first through hole 311 of the first exterior body 3. Of course, it is formed. Even in this case, the probe for voltage detection (voltage detection needle) P connected to the measuring device can be continuously inserted into the first through hole 311 and the second through hole 410, and the probe for voltage detection P is connected to the external terminal. 21 or a conductive member such as a bus bar 22 connected to the external terminal 21. Further, since the diameter of the second through-hole 410 included in the metal second exterior body 4 is larger than the diameter of the first through-hole 311, when the detection probe P is inserted, the detection probe P Can be prevented from coming into contact with the second exterior body 4 having conductivity, and a short circuit accident or the like can be prevented.

上記実施形態において、第一の外装体3と第二の外装体4とがそれぞれ単独の構成とされたが、これに限定されない。例えば、図14に示す如く、第一の外装体3と第二の外装体4とが一体的に形成され、単一の外装体を構成してもよい。具体的には、第一の外装体3と第二の外装体4とが互いに密接して二層構造をなす外装体を構成してもよい。この場合、第一の外装体3が樹脂製であることに着目し、第二の外装体4の内面に即して成形された樹脂部材を第一の外装体3として貼り合わせたり、第二の外装体4の内面上に樹脂層を形成し、その樹脂層によって第一の外装体3を構成したりしてもよい。   In the said embodiment, although the 1st exterior body 3 and the 2nd exterior body 4 were each set as the independent structure, it is not limited to this. For example, as shown in FIG. 14, the first exterior body 3 and the second exterior body 4 may be integrally formed to constitute a single exterior body. Specifically, the first exterior body 3 and the second exterior body 4 may be in close contact with each other to form a two-layer structure. In this case, paying attention to the fact that the first exterior body 3 is made of resin, a resin member molded in conformity with the inner surface of the second exterior body 4 is bonded together as the first exterior body 3, A resin layer may be formed on the inner surface of the exterior body 4 and the first exterior body 3 may be configured by the resin layer.

この場合においても、図14Aに示す如く、凸部312が第二貫通孔410に挿入された状態にされたり、図14Bに示す如く、第一の外装体3に凸部312が形成されずに、第一貫通孔311と第二貫通孔410とが連続した状態(段付き穴を形成した状態)にされたりすることは勿論である。すなわち、第一の外装体3の第一貫通孔311の孔径よりも、第二の外装体3の第二貫通孔410の孔径が大径になるように、第一の外装体3を形成することは勿論である。   Even in this case, as shown in FIG. 14A, the convex portion 312 is inserted into the second through-hole 410, or the convex portion 312 is not formed on the first exterior body 3 as shown in FIG. 14B. Of course, the first through-hole 311 and the second through-hole 410 may be in a continuous state (a state in which a stepped hole is formed). That is, the first exterior body 3 is formed so that the hole diameter of the second through hole 410 of the second exterior body 3 is larger than the diameter of the first through hole 311 of the first exterior body 3. Of course.

また、上述の如く、第二の外装体4の内面上に樹脂層を形成し、その樹脂層によって第一の外装体3を構成する場合、第二の外装体4の外面上にも樹脂層を形成してもよい。すなわち、金属製の第二の外装体4の周囲全体を樹脂材料で包囲するように、第二の外装体4をインサート成型してもよい。この場合、第二の外装体4に予め第二貫通孔410を設けておき、該第二の外装体4の表面全体を樹脂材料で覆うようにすれば、第二貫通孔410の内周面も樹脂材料で覆われる。従って、第二の外装体4の第二貫通孔410が、樹脂材料で構成される第一の外装体3の第一貫通孔311よりも大径になり、また、第二貫通孔410内に凸部312が挿入された状態になる。   Further, as described above, when a resin layer is formed on the inner surface of the second exterior body 4 and the first exterior body 3 is constituted by the resin layer, the resin layer is also formed on the outer surface of the second exterior body 4. May be formed. That is, the second exterior body 4 may be insert-molded so that the entire periphery of the metal second exterior body 4 is surrounded by the resin material. In this case, if a second through hole 410 is provided in advance in the second exterior body 4 and the entire surface of the second exterior body 4 is covered with a resin material, the inner peripheral surface of the second through hole 410 Also covered with resin material. Accordingly, the second through hole 410 of the second exterior body 4 has a larger diameter than the first through hole 311 of the first exterior body 3 made of a resin material, The convex portion 312 is inserted.

上記実施形態において、蓄電素子2として充放電可能な二次電池(リチウムイオン二次電池)が採用されたが、これに限定されない。例えば、蓄電素子2には、一次電池が採用されてもよい。また、蓄電素子2は、電池に限定されるものではなく、キャパシタであってもよい。   In the said embodiment, although the secondary battery (lithium ion secondary battery) which can be charged / discharged as the electrical storage element 2 was employ | adopted, it is not limited to this. For example, a primary battery may be employed for the power storage element 2. Moreover, the electrical storage element 2 is not limited to a battery, and may be a capacitor.

上記実施形態において、蓄電素子2として、六面体状(外観直方体状)の電槽20を有するもの(角形電池)が採用されたが、これに限定されない。例えば、蓄電素子2として、外観円柱状の電槽20を有するものが採用されてもよい。但し、蓄電素子2は、第一の外装体3に収容されるに当り、検電位置となる外部端子21,21又は外部端子21,21に接続された導電部材が第一の外装体3の蓋体31側に位置するように配置されることは言うまでもない。   In the above-described embodiment, the battery element 2 having a hexahedron-shaped (appearance rectangular parallelepiped) battery case 20 (rectangular battery) is employed as the power storage element 2, but is not limited thereto. For example, the power storage element 2 may have a cylindrical battery case 20 having an appearance. However, when the electricity storage element 2 is accommodated in the first exterior body 3, the external terminals 21, 21 or the conductive members connected to the external terminals 21, 21 serving as the detection positions are the first exterior body 3. Needless to say, it is arranged so as to be positioned on the lid 31 side.

上記各態様において、蓄電素子(電池セル)2の外部端子21の有する天面を覆う第一の外装体3と、該第一の外装体3を覆う第二の外装体4とを備えた蓄電装置(電池モジュール)1について説明したが、例えば、第一の外装体3及び第二の外装体4を上記各実施形態と同様の構成にすることを前提に、第一の外装体3に対して蓄電素子2に代えて導通部を有する電気機器(例えば、制御回路(基板)や、動力源としての電動モータを備えた駆動源等)を収容するもの(外装体)としてもよい。   In each of the above embodiments, a power storage provided with a first exterior body 3 that covers the top surface of the external terminal 21 of the electrical storage element (battery cell) 2 and a second exterior body 4 that covers the first exterior body 3. The device (battery module) 1 has been described. For example, on the assumption that the first exterior body 3 and the second exterior body 4 are configured in the same manner as the above-described embodiments, Instead of the power storage element 2, it may be a device (exterior body) that houses an electrical device (for example, a control circuit (substrate), a drive source including an electric motor as a power source) having a conduction part.

すなわち、導電部を有する一つ以上の電気機器の外側に配置される外装体であって、導電部の外側を覆う樹脂製の第一の外装体3と、第一の外装体3の外側を覆う金属製の第二の外装体4とを備えた外装体としてもよい。この場合において、第一の外装体3は、導電部の所定部位と対応した位置に第一貫通孔311を有し、第二の外装体4は、第一貫通孔311に対応した位置に第二貫通孔410を有し、第二貫通孔410の径が、第一貫通孔311の径よりも大きく設定される。このようにすれば、第一の外装体3で電気機器の導電部に対する電気絶縁性を確保しつつ、電気機器を確実に保護することができる。また、計測機器に接続された検電用プローブ(検電針)Pを第一貫通孔311と第二貫通孔410とに連続的に挿入でき、検電用プローブPを導電部に接触させることができる。また、金属製の第二の外装体4の有する第二貫通孔410の径が第一貫通孔311の径よりも大きいため、検電用プローブを挿入したときに、該検電用プローブが第二の外装体4と接触することが防止される。なお、この場合においても、第一の外装体3に、第一貫通孔311を有する凸部312を設けることで、上記実施形態と同様の作用及び効果を奏することができる。   That is, an exterior body that is disposed outside one or more electrical devices having a conductive portion, the first exterior body 3 made of resin covering the outside of the conductive portion, and the outside of the first exterior body 3 It is good also as an exterior body provided with the metal 2nd exterior body 4 to cover. In this case, the first exterior body 3 has a first through hole 311 at a position corresponding to a predetermined part of the conductive portion, and the second exterior body 4 is located at a position corresponding to the first through hole 311. Two through-holes 410 are provided, and the diameter of the second through-hole 410 is set larger than the diameter of the first through-hole 311. If it does in this way, an electric equipment can be reliably protected, ensuring the electrical insulation with respect to the electroconductive part of an electric equipment with the 1st exterior body 3. FIG. Moreover, the probe for electric detection (electric detection needle) P connected to the measuring instrument can be continuously inserted into the first through hole 311 and the second through hole 410, and the probe for electric detection P is brought into contact with the conductive portion. Can do. In addition, since the diameter of the second through-hole 410 included in the metal second exterior body 4 is larger than the diameter of the first through-hole 311, when the voltage detection probe is inserted, the voltage detection probe is Contact with the second exterior body 4 is prevented. In this case as well, by providing the first exterior body 3 with the convex portion 312 having the first through hole 311, the same operation and effect as in the above embodiment can be achieved.

1…電池モジュール(蓄電装置)、2…電池セル(蓄電素子)、3…第一の外装体、4…第二の外装体、5…信号ライン、6…支持部材、7…監視装置、8…フレーム部材、9…ヒートシンク、20…電槽、21…外部端子、22…バスバー、30…本体、31…蓋体、40…枠体、41…カバー、50…リード線、51…コネクタ、60…第一露出部、70…基板ケース、71…コネクタ、80…ベース、81…支柱部、82…第二露出部、83…制御装置配置領域、300…周壁部、301…底部、302…第一主壁部、303…第一側壁部、306…位置決用リブ、310…閉塞部、311…第一貫通孔、312…凸部、313…第三貫通孔、400…第二主壁部、401…第二側壁部、410…第二貫通孔、A,B…ブロック、P…検電用プローブ   DESCRIPTION OF SYMBOLS 1 ... Battery module (electric storage apparatus), 2 ... Battery cell (electric storage element), 3 ... 1st exterior body, 4 ... 2nd exterior body, 5 ... Signal line, 6 ... Support member, 7 ... Monitoring apparatus, 8 DESCRIPTION OF SYMBOLS ... Frame member, 9 ... Heat sink, 20 ... Battery case, 21 ... External terminal, 22 ... Bus bar, 30 ... Main body, 31 ... Lid body, 40 ... Frame body, 41 ... Cover, 50 ... Lead wire, 51 ... Connector, 60 ... 1st exposed part, 70 ... Board case, 71 ... Connector, 80 ... Base, 81 ... Strut part, 82 ... 2nd exposed part, 83 ... Control device arrangement area, 300 ... Peripheral wall part, 301 ... Bottom part, 302 ... 1st One main wall portion, 303 ... first side wall portion, 306 ... positioning rib, 310 ... blocking portion, 311 ... first through hole, 312 ... convex portion, 313 ... third through hole, 400 ... second main wall portion 401 ... second side wall portion, 410 ... second through hole, A, B ... block, P ... Electrostatic probe

Claims (11)

外部端子を有する複数の蓄電素子と、
該複数の蓄電素子に重なり、少なくとも前記複数の蓄電素子の前記外部端子を有する面の外側を覆う樹脂製の第一の外装体と、
前記第一の外装体の外側を覆う金属製の第二の外装体とを備え、
前記第一の外装体は、前記外部端子又は該外部端子に電気的に接続された導電部材の所定部位と対応した位置に第一貫通孔を有し、
前記第二の外装体は、前記第一貫通孔に対応した位置に第二貫通孔を有し、
前記第二貫通孔の径は、第一貫通孔の径よりも大きい
蓄電装置。
A plurality of power storage elements having external terminals;
A first exterior body made of resin that overlaps the plurality of power storage elements and covers at least the outer surface of the plurality of power storage elements having the external terminals;
A metal second exterior body covering the outside of the first exterior body,
The first exterior body has a first through hole at a position corresponding to a predetermined portion of the external terminal or a conductive member electrically connected to the external terminal,
The second exterior body has a second through hole at a position corresponding to the first through hole,
The diameter of the second through hole is larger than the diameter of the first through hole.
前記第一の外装体は、前記第二貫通孔に挿入される凸部であって、内外に貫通した前記第一貫通孔を有する凸部を備える
請求項1に記載の蓄電装置。
The power storage device according to claim 1, wherein the first exterior body includes a convex portion that is inserted into the second through hole and has the first through hole penetrating inward and outward.
前記凸部は、前記第二の外装体の外面と面一又は略面一になるように前記第二貫通孔に挿入されている
請求項2に記載の蓄電装置。
The power storage device according to claim 2, wherein the convex portion is inserted into the second through hole so as to be flush with or substantially flush with an outer surface of the second exterior body.
前記凸部は、前記第二の外装体の外面から外方に突出している
請求項2に記載の蓄電装置。
The power storage device according to claim 2, wherein the convex portion protrudes outward from an outer surface of the second exterior body.
前記凸部の外周面が前記第二貫通孔の内周面と接触又は略接触している
請求項2乃至請求項4の何れか1項に記載の蓄電装置。
The power storage device according to any one of claims 2 to 4, wherein an outer peripheral surface of the convex portion is in contact with or substantially in contact with an inner peripheral surface of the second through hole.
前記凸部の外周面と前記第二貫通孔の内周面との間に隙間がある
請求項2乃至請求項4の何れか1項に記載の蓄電装置。
The power storage device according to any one of claims 2 to 4, wherein there is a gap between an outer peripheral surface of the convex portion and an inner peripheral surface of the second through hole.
前記第一の外装体は、前記複数の蓄電素子を収容する樹脂製収容体である
請求項1乃至請求項6の何れか1項に記載の蓄電装置。
The power storage device according to any one of claims 1 to 6, wherein the first exterior body is a resin container that stores the plurality of power storage elements.
前記第二の外装体は、前記複数の蓄電素子を収容する金属製収容体である
請求項1乃至請求項6の何れか1項に記載の蓄電装置。
The power storage device according to any one of claims 1 to 6, wherein the second exterior body is a metal container that houses the plurality of power storage elements.
前記第一の外装体は、前記複数の蓄電素子を収容する樹脂製収容体であり、
前記第二の外装体は、前記第一の外装体を収容する金属製収容体である
請求項1乃至請求項6の何れか1項に記載の蓄電装置。
The first exterior body is a resin container that houses the plurality of power storage elements,
The power storage device according to any one of claims 1 to 6, wherein the second exterior body is a metal container that houses the first exterior body.
導電部を有する複数の電気機器の外側に配置される外装体であって、
前記複数の電気機器と重なり、少なくとも前記複数の電気機器における前記導電部の外側を覆う樹脂製の第一の外装体と、
前記第一の外装体の外側を覆う金属製の第二の外装体とを備え、
前記第一の外装体は、前記導電部の所定部位と対応した位置に第一貫通孔を有し、
前記第二の外装体は、前記第一貫通孔に対応した位置に第二貫通孔を有し、
前記第二貫通孔の径は、第一貫通孔の径よりも大きい
外装体。
An exterior body disposed outside a plurality of electrical devices having a conductive part,
A first exterior body made of resin that overlaps the plurality of electrical devices and covers at least the outside of the conductive portion in the plurality of electrical devices ;
A metal second exterior body covering the outside of the first exterior body,
The first exterior body has a first through hole at a position corresponding to a predetermined part of the conductive portion,
The second exterior body has a second through hole at a position corresponding to the first through hole,
A diameter of the second through hole is larger than a diameter of the first through hole.
前記第一の外装体は、前記第二貫通孔に挿入される凸部であって、内外に貫通した前記第一貫通孔を有する凸部を備える
請求項10に記載の外装体。
The exterior body according to claim 10, wherein the first exterior body includes a convex portion that is inserted into the second through hole and has the first through hole penetrating inward and outward.
JP2012218355A 2012-09-28 2012-09-28 Power storage device and exterior body Expired - Fee Related JP5991586B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012218355A JP5991586B2 (en) 2012-09-28 2012-09-28 Power storage device and exterior body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012218355A JP5991586B2 (en) 2012-09-28 2012-09-28 Power storage device and exterior body

Publications (2)

Publication Number Publication Date
JP2014072086A JP2014072086A (en) 2014-04-21
JP5991586B2 true JP5991586B2 (en) 2016-09-14

Family

ID=50747108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012218355A Expired - Fee Related JP5991586B2 (en) 2012-09-28 2012-09-28 Power storage device and exterior body

Country Status (1)

Country Link
JP (1) JP5991586B2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5077456B2 (en) * 2011-03-28 2012-11-21 株式会社Gsユアサ Assembled battery

Also Published As

Publication number Publication date
JP2014072086A (en) 2014-04-21

Similar Documents

Publication Publication Date Title
JP5796785B2 (en) Power storage device
JP6496846B2 (en) Battery module having temperature monitoring assembly
JP7196950B2 (en) power storage device
JP6098939B2 (en) Power storage module
JP5155772B2 (en) Battery pack structure
KR101340010B1 (en) Battery pack
JP5454626B2 (en) Wiring module
JP6163369B2 (en) Bus bar module and power supply
JP5751634B2 (en) Power storage device
JP2005317456A (en) Battery pack
JP4530711B2 (en) Pack battery
JP6025036B2 (en) Power storage device
JP6011950B2 (en) Power storage device
JP2016143584A (en) Bus bar module and battery monitoring module
KR102381583B1 (en) battery module for electric vehicle having monitoring tool
JP4761726B2 (en) Pack battery
JP6020974B2 (en) Power storage device
JP7014504B2 (en) Power storage device and manufacturing method of power storage device
JP5991586B2 (en) Power storage device and exterior body
JP6569649B2 (en) Power supply
JP6390988B2 (en) Power storage module
JP2017059377A (en) Power storage device and member disposed on terminal side
JP6606888B2 (en) Power storage device
JP6330589B2 (en) Power storage device

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20150422

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150515

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160329

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160506

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160623

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160722

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160804

R150 Certificate of patent or registration of utility model

Ref document number: 5991586

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees