JP2016004672A - battery - Google Patents

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Publication number
JP2016004672A
JP2016004672A JP2014123885A JP2014123885A JP2016004672A JP 2016004672 A JP2016004672 A JP 2016004672A JP 2014123885 A JP2014123885 A JP 2014123885A JP 2014123885 A JP2014123885 A JP 2014123885A JP 2016004672 A JP2016004672 A JP 2016004672A
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Prior art keywords
battery
battery cell
current interrupting
impact
bimetallic
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慎太郎 小森
Shintaro Komori
慎太郎 小森
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Canon Inc
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Canon Inc
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Priority to JP2014123885A priority Critical patent/JP2016004672A/en
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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

Abstract

PROBLEM TO BE SOLVED: To provide a method for preventing instantaneous interruption of a power supply of electrical equipment even in a case where an impact is added to a bimetal type current breaking element by dropping of a battery or the like.SOLUTION: A battery has: a substantially-rectangular battery cell 103; and bimetal type current breaking elements 105 and 110 that detect heat of the battery cell 103. The current breaking elements 105 and 110 are connected in parallel to each other, and connected in series to the battery cell 103. The current breaking element 105 is arranged on an upper surface 103a of the battery cell, and the current breaking element 110 is arranged on a lateral face 103b orthogonal to the upper surface 103a of the battery cell.

Description

本発明は、バイメタル式の電流遮断素子を用いたバッテリーに関するものである。   The present invention relates to a battery using a bimetal type current interrupting element.

従来のバッテリーには、バッテリーセルの異常発熱を検知するために、バイメタル式の電流遮断素子が用いられているものがある（特許文献１参照）。   Some conventional batteries use a bimetallic current interrupting element in order to detect abnormal heat generation in a battery cell (see Patent Document 1).

バッテリーの内部構成は図５に示すように、外装ケース３０１、３０２の中にバッテリーセル３０３、回路基板３０８、回路基板３０８に実装されているバッテリー端子３０９、導通部材３０６、３０７、保持部材３０４、バイメタル式の電流遮断素子３０５が収納されている。そして図６に示すように、バッテリーセル３０３の上面にバイメタル式の電流遮断素子３０５が配置されており、バッテリーセル３０３の温度が伝わるように当接している。   As shown in FIG. 5, the internal configuration of the battery includes a battery cell 303, a circuit board 308, a battery terminal 309 mounted on the circuit board 308, conductive members 306 and 307, a holding member 304, A bimetallic current interrupting element 305 is accommodated. As shown in FIG. 6, a bimetallic current blocking element 305 is disposed on the upper surface of the battery cell 303 and is in contact with the battery cell 303 so that the temperature of the battery cell 303 is transmitted.

また図７に示すように、バッテリーの回路図において、バッテリーセル３０３とバイメタル式の電流遮断素子３０５が直列に繋がれており、接続部３１１、３１２によって回路基板３０８に繋がれている。バッテリーセル３０３が高温になった際は素子３０５の接点が離れ、回路を遮断する仕組みになっている。   Further, as shown in FIG. 7, in the circuit diagram of the battery, the battery cell 303 and the bimetal type current interrupting element 305 are connected in series, and are connected to the circuit board 308 by connection parts 311 and 312. When the battery cell 303 becomes high temperature, the contact of the element 305 is released and the circuit is cut off.

特開平７−１３４９８３号公報JP 7-134983 A

しかしながら、バッテリーは異常発熱時のセルの膨張を考慮した隙間や、部品の加工誤差や組立性向上のための隙間が存在する。上記従来例では図８に示すように、バッテリーが落下等による衝撃を受けた際に内部のバッテリーセル３０３が前記隙間を移動し、バッテリーセル３０３上面に配置されたバイメタル式の電流遮断素子３０５が外装ケース３０１に衝突する場合がある。その際の衝突の衝撃により、バイメタル式の電流遮断素子３０５内部の接点部３１０が離れ、電子機器の電源が瞬断する可能性があるという問題があった。   However, the battery has a gap in consideration of cell expansion in the event of abnormal heat generation, and a gap for improving part processing error and assemblability. In the above conventional example, as shown in FIG. 8, when the battery receives an impact due to dropping or the like, the internal battery cell 303 moves through the gap, and the bimetallic current blocking element 305 disposed on the upper surface of the battery cell 303 is provided. The case may collide with the outer case 301. Due to the impact of the collision at that time, there is a problem that the contact portion 310 inside the bimetallic current interrupting element 305 is separated and the power supply of the electronic device may be momentarily interrupted.

本発明の目的は、バイメタル式の電流遮断素子３０５に対して落下等による衝撃が加わった場合においても、電気機器の電源の瞬断を防止することである。   An object of the present invention is to prevent an instantaneous interruption of the power supply of an electric device even when an impact due to dropping or the like is applied to the bimetallic current interruption element 305.

本発明のバッテリーは、内蔵された略直方体のバッテリーセルと、前記バッテリーセルの熱を検知するバイメタル式の第１と第２の電流遮断素子を有し、前記第１と第２の電流遮断素子は並列に接続され、かつ前記バッテリーセルと直列に接続されており、前記第１の電流遮断素子は前記バッテリーセルの第１の面に、前記第２の電流遮断素子は前記バッテリーセルの第２の面に配置され、前記第１の面と前記第２の面は直交する面であることを特徴としている。   The battery according to the present invention includes a built-in substantially rectangular parallelepiped battery cell, and bimetal first and second current interrupting elements for detecting heat of the battery cell, and the first and second current interrupting elements. Are connected in parallel and in series with the battery cell, the first current interrupting element on the first surface of the battery cell and the second current interrupting element on the second side of the battery cell. The first surface and the second surface are orthogonal to each other.

本発明によれば、第１の素子に落下等による衝撃が加わり、第１の素子の接点が離れてしまっても、第２の素子は直交する面に配置されているため、接点が離れる方向に衝撃を受けることがなく、落下等の衝撃により回路が遮断されることを防止できる。   According to the present invention, even if an impact due to dropping or the like is applied to the first element and the contact of the first element is separated, the second element is disposed on the orthogonal surface, so that the contact is separated. It is possible to prevent the circuit from being interrupted by an impact such as dropping.

本発明の第１の実施形態に関わるバッテリーから外装ケースを取り外した際の斜視図である。It is a perspective view at the time of removing the exterior case from the battery according to the first embodiment of the present invention. 本発明の第１の実施形態に関わるバッテリーの回路図である。1 is a circuit diagram of a battery according to a first embodiment of the present invention. 本発明の第２の実施形態に関わるバッテリーから外装ケースを取り外した際の斜視図である。It is a perspective view at the time of removing an exterior case from the battery concerning the 2nd Embodiment of this invention. 本発明の第２の実施形態に関わるバッテリーの回路図である。It is a circuit diagram of the battery concerning the 2nd Embodiment of this invention. 従来のバッテリーの分解斜視図である。It is a disassembled perspective view of the conventional battery. 従来のバッテリーから外装ケースを取り外した際の斜視図である。It is a perspective view at the time of removing the exterior case from the conventional battery. 従来のバッテリーの回路図である。It is a circuit diagram of the conventional battery. 従来のバッテリーの断面図である。（ａ）は通常状態を表わしており、（ｂ）はバイメタル式の電流遮断素子が外装ケースと当接している状態を表わしている。It is sectional drawing of the conventional battery. (A) represents a normal state, and (b) represents a state in which a bimetallic current interruption element is in contact with the outer case.

以下、本発明を実施するための形態を図面に基づいて説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

＜第１の実施形態＞
本発明の第１の実施形態を図１，２に基づいて説明する。図１に示すように、外装ケース１０１、１０２の中にバッテリーセル１０３、回路基板１０８、回路基板１０８上に実装されているバッテリー端子１０９、導通部材１０６、保持部材１０４、バイメタル式の電流遮断素子１０５、１１０が収納されている。バッテリー端子１０９が実装されている回路基板１０８とバッテリーセル１０３は保持部材１０４により保持されている。回路基板１０８とバイメタル式の電流遮断素子１０５、１１０とバッテリーセル１０３が導電部材１０６により連結されている。バッテリーセルの上面１０３（ａ）にバイメタル式の電流遮断素子１０５を、バッテリーセルの上面１０３（ａ）と直交する側面１０３（ｂ）にバイメタル式の電流遮断素子１１０を配置する。なおバッテリー端子１０９はバッテリーを装着する電子機器の電源端子（不図示）に接続され、バッテリーセル１０３からの電源を供給している。また図２に示すように、２つのバイメタル式電流遮断素子１０５，１１０は回路上並列に配置されており、その二つの素子がバッテリーセル１０３に直列に接続されており、接続部１１１、１１２によって回路基板１０８に繋がれている。 <First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a battery cell 103, a circuit board 108, a battery terminal 109 mounted on the circuit board 108, a conducting member 106, a holding member 104, and a bimetallic current interrupting element in outer cases 101 and 102 105 and 110 are stored. The circuit board 108 on which the battery terminal 109 is mounted and the battery cell 103 are held by a holding member 104. The circuit board 108, the bimetallic current interrupting elements 105 and 110, and the battery cell 103 are connected by a conductive member 106. A bimetallic current blocking element 105 is disposed on the upper surface 103 (a) of the battery cell, and a bimetallic current blocking element 110 is disposed on the side surface 103 (b) orthogonal to the upper surface 103 (a) of the battery cell. The battery terminal 109 is connected to a power supply terminal (not shown) of an electronic device in which the battery is mounted, and supplies power from the battery cell 103. As shown in FIG. 2, the two bimetallic current interrupting elements 105 and 110 are arranged in parallel on the circuit, and the two elements are connected in series to the battery cell 103, and are connected by the connecting portions 111 and 112. It is connected to the circuit board 108.

本発明の形態を実施することにより、バッテリーがＺ方向の落下等による衝撃を受けた際に内部のバッテリーセル１０３がＺ方向に移動し、バッテリーセルの上面１０３（ａ）に配置されたバイメタル式の電流遮断素子１０５が外装ケース１０１の内側に衝突し、その衝撃により、バイメタル式の電流遮断素子１０５内部の接点が離れたとしても、バッテリーセルの側面１０３（ｂ）に配置されている他方のバイメタル式の電流遮断素子１１０には、接点が離れる方向の衝撃が加わることがなく接点が離れないため、回路の瞬断を防止することができる。また同様に、バッテリーがＸ方向の落下等による衝撃を受けた際に内部のバッテリーセル１０３がＸ方向に移動し、バッテリーセルの側面１０３（ｂ）にバイメタル式の電流遮断素子１１０が外装ケース１０１の内側に衝突し、その衝撃により、バイメタル式の電流遮断素子１１０内部の接点が離れたとしても、バッテリーセルの上面１０３（ａ）に配置されている他方のバイメタル式の電流遮断素子１０５には、接点が離れる方向の衝撃が加わることがなく接点が離れないため、回路の瞬断を防止することができる。またバッテリーがＹ方向の落下等による衝撃を受けた際は、バイメタル式の電流遮断素子１０５、１１０には、ともに接点が離れる方向の衝撃が加わることがなく接点が離れない。   By implementing the embodiment of the present invention, the internal battery cell 103 moves in the Z direction when the battery receives an impact caused by dropping or the like in the Z direction, and the bimetal type disposed on the upper surface 103 (a) of the battery cell. Even if the current interrupting element 105 collides with the inside of the outer case 101 and the impact causes the contact inside the bimetallic current interrupting element 105 to be separated, the other one disposed on the side surface 103 (b) of the battery cell Since the bimetal current interrupting element 110 is not subjected to an impact in the direction in which the contact is separated and the contact is not separated, an instantaneous interruption of the circuit can be prevented. Similarly, when the battery is impacted by dropping in the X direction, the internal battery cell 103 moves in the X direction, and a bimetallic current interrupting element 110 is placed on the side surface 103 (b) of the battery cell. Even if the contact inside the bimetallic current interrupting element 110 is released due to the impact, the other bimetallic current interrupting element 105 disposed on the upper surface 103 (a) of the battery cell Since no contact is applied in the direction in which the contacts are separated and the contacts are not separated, instantaneous interruption of the circuit can be prevented. When the battery receives an impact due to a drop in the Y direction or the like, the bimetal current interrupting elements 105 and 110 are not subjected to an impact in the direction in which the contacts are separated, and the contacts are not separated.

＜第２の実施形態＞
本発明の第２の実施形態を図３、４に基づいて説明する。図３に示すように、外装ケース２０１、２０２内にバッテリーセル２０３、２１１、回路基板２０８、回路基板２０８上に実装されているバッテリー端子２０９、導通部材２０６、保持部材２０４、バイメタル式の電流遮断素子２０５、２１０、粘着性絶縁部材２１２が収納されている。バッテリー端子２０９が実装されている回路基板２０８とバッテリーセル２０３は保持部材２０４により保持されている。バッテリーセル２１１は粘着性絶縁部材２１２によりバッテリーセル２０３に保持されている。バッテリー端子２０９が実装されている回路基板２０８とバイメタル式の電流遮断素子２０５、２１０とバッテリーセル２０３、２１１が導通部材２０６により連結されている。第１のバッテリーセルの上面２０３（ａ）に第１のバイメタル式の電流遮断素子２０５を、第２のバッテリーセル２１１の前記上面と直交する側面２１１（ｂ）に第２のバイメタル式の電流遮断素子２１０を配置する。なおバッテリー端子２０９はバッテリーを装着する電子機器の電源端子（不図示）に接続され、バッテリーセル２０３、２１１からの電源を供給している。また図４に示すように、第１のバッテリーセル２０３と第１のバイメタル式電流遮断素子２０５、第２のバッテリーセル２１１と第２のバイメタル式電流遮断素子２１０は回路上並列に配置されており、それぞれのセルとバイメタル式電流遮断素子は直列に接続されている。また接続部２１２、２１３によって回路基板２０８に繋がれている。 <Second Embodiment>
A second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 3, battery cells 203 and 211, a circuit board 208, a battery terminal 209 mounted on the circuit board 208, a conductive member 206, a holding member 204, and a bimetal type current interruption in outer cases 201 and 202 The elements 205 and 210 and the adhesive insulating member 212 are accommodated. The circuit board 208 on which the battery terminal 209 is mounted and the battery cell 203 are held by a holding member 204. The battery cell 211 is held on the battery cell 203 by an adhesive insulating member 212. A circuit board 208 on which a battery terminal 209 is mounted, bimetallic current interrupting elements 205 and 210, and battery cells 203 and 211 are connected by a conductive member 206. A first bimetal-type current interrupting element 205 is provided on the upper surface 203 (a) of the first battery cell, and a second bimetal-type current interrupting device is provided on the side surface 211 (b) orthogonal to the upper surface of the second battery cell 211. The element 210 is disposed. The battery terminal 209 is connected to a power supply terminal (not shown) of an electronic device in which the battery is mounted, and supplies power from the battery cells 203 and 211. Further, as shown in FIG. 4, the first battery cell 203 and the first bimetallic current cutoff element 205, and the second battery cell 211 and the second bimetallic current cutoff element 210 are arranged in parallel on the circuit. Each cell and the bimetal type current interrupting element are connected in series. In addition, the connection parts 212 and 213 are connected to the circuit board 208.

本発明の形態を実施することにより、バッテリーがＺ方向の落下等による衝撃を受けた際に内部のバッテリーセル２０３、２１１がＺ方向に移動し、バッテリーセルの上面２０３（ａ）に配置されたバイメタル式の電流遮断素子２０５が外装ケース２０１の内部に衝突し、その衝撃により、バイメタル式の電流遮断素子２０５内部の接点が離れたとしても、側面２１１（ｂ）に配置されている他方のバイメタル式の電流遮断素子２１０には、接点が離れる方向の衝撃が加わることがなく接点が離れないため、回路の瞬断を防止することができる。また、バッテリーがＸ方向の落下等による衝撃を受けた際に内部のバッテリーセル２０３、２１１がＸ方向に移動し、バッテリーセルの側面２１１（ｂ）に配置されたバイメタル式の電流遮断素子２１０が外装ケース２０１の内部に衝突し、その衝撃により、バイメタル式の電流遮断素子２１０内部の接点が離れたとしても、上面２０３（ａ）に配置されている他方のバイメタル式の電流遮断素子２０５には、接点が離れる方向の衝撃が加わることがなく接点が離れないため、回路の瞬断を防止することができる。またバッテリーがＹ方向の落下等による衝撃を受けた際は、バイメタル式の電流遮断素子２０５、２１０には、ともに接点が離れる方向の衝撃が加わることがなく接点が離れない。   By implementing the embodiment of the present invention, when the battery receives an impact caused by dropping in the Z direction, the internal battery cells 203 and 211 move in the Z direction and are arranged on the upper surface 203 (a) of the battery cell. Even if the bimetallic current interrupting element 205 collides with the inside of the exterior case 201 and the contact inside the bimetallic current interrupting element 205 is separated due to the impact, the other bimetal disposed on the side surface 211 (b). In the current interrupting element 210 of the formula, since the contact is not separated without the impact in the direction in which the contact is separated, the circuit can be prevented from being momentarily interrupted. Further, when the battery receives an impact caused by dropping in the X direction or the like, the internal battery cells 203 and 211 move in the X direction, and the bimetal type current blocking element 210 disposed on the side surface 211 (b) of the battery cell is provided. Even if the contact inside the outer case 201 collides, and the contact inside the bimetallic current interrupting element 210 is released due to the impact, the other bimetallic current interrupting element 205 arranged on the upper surface 203 (a) Since no contact is applied in the direction in which the contacts are separated and the contacts are not separated, instantaneous interruption of the circuit can be prevented. When the battery receives an impact due to a drop in the Y direction or the like, the bimetal current interrupting elements 205 and 210 are not subjected to an impact in the direction in which the contacts are separated from each other, and the contacts are not separated.

第１の実施形態の場合、セル１つにバイメタル２つ使用しなければならなかったが、第２の実施形態の場合セル１つにつきバイメタル１つの使用で実現できるため、従来の部品点数を維持したまま実施できる。   In the case of the first embodiment, it was necessary to use two bimetals per cell. However, in the case of the second embodiment, since it can be realized by using one bimetal per cell, the conventional number of parts is maintained. This can be done as is.

以上、本発明をその好適な実施形態に基づいて詳述してきたが、本発明はこれら特定の実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の様々な形態も本発明に含まれる。上述の実施形態の一部を適宜組み合わせてもよい。   Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

１０１，１０２，２０１，２０２，３０１，３０２ 外装ケース、
１０３，２０３，２１１，３０３ バッテリーセル、
１０４，２０４，３０４ 保持部材、
１０５，１１０，２０５，２１０，３０５ バイメタル式電流遮断素子、
１０６，２０６，３０６，３０７ 導通部材、
１０９，２０９，３０９ バッテリー端子、
１１１，１１２，２１２，２１３，３１１，３１２ 回路基板接続部、
１０８，２０８，３０８ 回路基板、
３１０ バイメタル式電流遮断素子の接点部 101, 102, 201, 202, 301, 302 exterior case,
103, 203, 211, 303 battery cell,
104, 204, 304 holding member,
105, 110, 205, 210, 305 Bimetal current interrupting element,
106, 206, 306, 307 conductive member,
109, 209, 309 battery terminals,
111, 112, 212, 213, 311, 312 circuit board connection part,
108, 208, 308 circuit board,
310 Contact point of bimetal current interrupter

Claims (2)

内蔵された直方体のバッテリーセルと、前記バッテリーセルの熱を検知するバイメタル式の第１と第２の電流遮断素子を有し、前記第１と第２の電流遮断素子は並列に接続され、かつ前記バッテリーセルと直列に接続されており、前記第１の電流遮断素子は前記バッテリーセルの第１の面に、前記第２の電流遮断素子は前記バッテリーセルの第２の面に配置され、前記第１の面と前記第２の面は直交する面であることを特徴とするバッテリー。   A built-in rectangular parallelepiped battery cell and bimetal first and second current interrupting elements for detecting heat of the battery cell, wherein the first and second current interrupting elements are connected in parallel; and The battery cell is connected in series, the first current interrupting element is disposed on a first surface of the battery cell, and the second current interrupting element is disposed on a second surface of the battery cell, The battery, wherein the first surface and the second surface are orthogonal to each other. 内蔵された直方体の複数のバッテリーセルと、前記バッテリーセルの熱を検知する前記バッテリーセルと同数のバイメタル式の電流遮断素子を有し、前記電流遮断素子と前記バッテリーセルは直列に接続されており、かつ少なくとも２組以上前記電流遮断素子および前記バッテリーセルは並列に繋がれており、前記第１の電流遮断素子が前記第１のバッテリーセルの第１の面に、前記第２の電流遮断素子が前記第２のバッテリーセルの第２の面に配置されており、前記第１のバッテリーセルの第１の面と前記第２のバッテリーセルの第２の面は直交する面であることを特徴とするバッテリー。   A plurality of built-in rectangular parallelepiped battery cells, and the same number of bimetallic current interrupting elements as the battery cells for detecting the heat of the battery cells, the current interrupting elements and the battery cells are connected in series. In addition, at least two or more sets of the current interruption element and the battery cell are connected in parallel, and the first current interruption element is disposed on the first surface of the first battery cell, and the second current interruption element. Is disposed on the second surface of the second battery cell, and the first surface of the first battery cell and the second surface of the second battery cell are perpendicular to each other. And battery.
JP2014123885A 2014-06-17 2014-06-17 battery Pending JP2016004672A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336935A1 (en) * 2016-12-19 2018-06-20 SK Innovation Co., Ltd. Battery safety apparatus
JP2021507452A (en) * 2017-12-13 2021-02-22 ビーワイディー カンパニー リミテッド Battery system and electric vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336935A1 (en) * 2016-12-19 2018-06-20 SK Innovation Co., Ltd. Battery safety apparatus
KR20180070876A (en) 2016-12-19 2018-06-27 에스케이이노베이션 주식회사 Apparatus for protecting battery
CN108258183A (en) * 2016-12-19 2018-07-06 Sk新技术株式会社 Cell safety equipment
JP2021507452A (en) * 2017-12-13 2021-02-22 ビーワイディー カンパニー リミテッド Battery system and electric vehicle

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