JP6206042B2 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
JP6206042B2
JP6206042B2 JP2013201930A JP2013201930A JP6206042B2 JP 6206042 B2 JP6206042 B2 JP 6206042B2 JP 2013201930 A JP2013201930 A JP 2013201930A JP 2013201930 A JP2013201930 A JP 2013201930A JP 6206042 B2 JP6206042 B2 JP 6206042B2
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Prior art keywords
terminal
case
inclined surface
battery
terminal block
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JP2015069778A5 (en
JP2015069778A (en
Inventor
加藤　裕久
裕久 加藤
加藤　崇行
崇行 加藤
浩生 植田
浩生 植田
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to JP2013201930A priority Critical patent/JP6206042B2/en
Priority to PCT/JP2014/074441 priority patent/WO2015045966A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

本発明は、接続部材が接合される端子を有する電池パックに関する。 The present invention relates to a battery pack having a terminal connecting member is joined.

二次電池や、複数の二次電池を有する電池パックには、負荷と二次電池又は負荷と電池パックを接続するための端子が設けられている。端子には、バスバーや配線などの接続部材が接続され、この接続部材を介して負荷が接続される。端子が腐食すると抵抗値が大きくなり、電力損失が大きくなる。このため、特許文献１に記載の蓄電池では、端子に液体が付着することを抑止して、端子が腐食することを抑止している。   A secondary battery or a battery pack having a plurality of secondary batteries is provided with a terminal for connecting the load and the secondary battery or the load and the battery pack. A connection member such as a bus bar or wiring is connected to the terminal, and a load is connected via the connection member. When the terminal is corroded, the resistance value increases and the power loss increases. For this reason, in the storage battery described in Patent Document 1, the liquid is prevented from adhering to the terminal and the terminal is prevented from corroding.

図７に示すように、特許文献１に記載の蓄電池１０１は、一面に端子１０２を有している。端子１０２は、蓄電池１０１の一面から突出する突出部１０３と、蓄電池１０１の一面に設けられ、突出部１０３を囲む環状の接合部１０４とを有している。端子１０２の周囲には、傾斜面１０５が設けられている。例えば、結露などによって蓄電池１０１の一面に液体（結露水）が生じると、液体は、傾斜面１０５を流れる。   As shown in FIG. 7, the storage battery 101 described in Patent Document 1 has a terminal 102 on one side. The terminal 102 includes a protruding portion 103 that protrudes from one surface of the storage battery 101, and an annular joint portion 104 that is provided on one surface of the storage battery 101 and surrounds the protruding portion 103. An inclined surface 105 is provided around the terminal 102. For example, when liquid (condensation water) is generated on one surface of the storage battery 101 due to condensation or the like, the liquid flows on the inclined surface 105.

特開平１１−１４９９３５号公報JP-A-11-149935

ところで、特許文献１に記載の蓄電池１０１では、接合部１０４の上面（接続部材が接合される面）が平坦面となっているため、液体が傾斜面１０５を流れても、接合部１０４で滞留しやすく、端子１０２が腐食するおそれがある。   By the way, in the storage battery 101 described in Patent Document 1, the upper surface of the joint portion 104 (the surface to which the connection member is joined) is a flat surface. Therefore, even if liquid flows through the inclined surface 105, the liquid stays in the joint portion 104. The terminal 102 may corrode easily.

本発明の目的は、端子の腐食を抑止することができる電池パックを提供することにある。 An object of the present invention is to provide a battery pack capable of inhibiting corrosion of terminals.

上記課題を解決する電池パックは、正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、前記端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であることを要旨とする。 A battery pack for solving the above problems is a battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal. Then, the gist is that the joint surface to which the connection member of the terminal is joined is an inclined surface that is inclined downward in the vertical direction.

これによれば、端子の接合面に液体が流れてきても、接合面で液体が滞留しにくい。このため、端子が腐食することが抑止され、端子の腐食に伴い端子と接続部材との接触抵抗が大きくなることが抑止される。したがって、電力損失が大きくなることが抑止される。 According to this, even if the liquid flows on the joint surface of the terminal, the liquid hardly stays on the joint surface. For this reason, it is suppressed that a terminal corrodes, and it is suppressed that the contact resistance of a terminal and a connection member becomes large with corrosion of a terminal. Therefore, an increase in power loss is suppressed.

上記電池パックについて、前記複数の電池セルが収容されるケースを備え、前記端子は、前記ケースの外部に突出して設けられ、前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続することが好ましい。   The battery pack includes a case in which the plurality of battery cells are accommodated, the terminal is provided to protrude outside the case, and the connection member is supplied with power from the terminal and the plurality of battery cells. It is preferable to electrically connect the device.

これによれば、端子はケースの外部に突出する。ケースの外部は、結露などによって液体が生じやすいが、端子の接合面を傾斜させることで、液体が滞留しにくく、端子が腐食しにくい。 According to this, the terminal protrudes outside the case. Although liquid is likely to be generated outside the case due to condensation or the like, by tilting the joint surface of the terminal, the liquid is less likely to stay and the terminal is not easily corroded.

上記電池パックについて、前記ケースは、該ケースの鉛直方向上方の面に設けられる端子台を有し、前記端子台の鉛直方向上方の面は、鉛直方向下方に向けて傾斜する端子台傾斜面を有し、前記端子は、前記端子台における前記端子台傾斜面を貫通し、該端子台傾斜面から突出するように設けられていることが好ましい。   With respect to the battery pack, the case has a terminal block provided on a surface above the vertical direction of the case, and the surface above the vertical direction of the terminal block has a terminal block inclined surface that is inclined downward in the vertical direction. It is preferable that the terminal is provided so as to penetrate the terminal block inclined surface of the terminal block and protrude from the terminal block inclined surface.

これによれば、端子の周囲に液体が流れてきても、端子台傾斜面で液体が滞留しにくい。このため、端子の鉛直方向上方の面に加えて、端子の周囲での液体の滞留も抑止され、端子の腐食を更に抑止することができる。   According to this, even if the liquid flows around the terminal, the liquid hardly stays on the inclined surface of the terminal block. For this reason, in addition to the upper surface of the terminal in the vertical direction, stagnation of liquid around the terminal is also suppressed, and corrosion of the terminal can be further suppressed.

上記電池パックについて、前記端子台の前記端子台傾斜面における前記端子より鉛直方向上方に位置する部分には、前記端子台の前記端子台傾斜面から立設する立設部が設けられていることが好ましい。   About the said battery pack, the standing part which stands up from the said terminal block inclined surface of the said terminal block is provided in the part located in the perpendicular direction upwards from the said terminal in the said terminal block inclined surface of the said terminal block. Is preferred.

これによれば、端子台傾斜面における端子より鉛直方向上方から端子に向けて流れてきた液体が、端子に接触することが抑止されるため、端子の腐食を更に抑止することができる。
上記課題を解決する電池パックは、正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、前記複数の電池セルが収容されるケースを備え、前記ケースの外部に突出して設けられる前記端子を複数備え、前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続するものであり、各端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であり、各端子の前記傾斜面は、鉛直方向下方に向けて傾斜する方向が同一であることを要旨とする。
上記課題を解決する電池パックは、正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、前記複数の電池セルが収容されるケースを備え、前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続するものであり、前記複数の電池セルは、並設されており、前記端子は、前記ケースの外部に突出して設けられ、各端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であり、前記傾斜面は、前記ケースを構成する壁部のうち前記電池セルの並設方向の一端側の壁部を向いていることを要旨とする。 According to this, since the liquid that has flowed toward the terminal from above in the vertical direction with respect to the terminal on the inclined surface of the terminal block is suppressed from contacting the terminal, corrosion of the terminal can be further suppressed.
A battery pack for solving the above problems is a battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal. A case in which the plurality of battery cells are accommodated; a plurality of the terminals provided to protrude outside the case; and the connection member is supplied with electric power from the terminals and the plurality of battery cells. The connection surface to which the connection member of each terminal is bonded is an inclined surface that is inclined downward in the vertical direction, and the inclined surface of each terminal is downward in the vertical direction. The gist is that the direction of tilting toward is the same.
A battery pack for solving the above problems is a battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal. A plurality of battery cells are accommodated in the case, and the connection member electrically connects the terminal and a device to which power is supplied from the plurality of battery cells. The battery cells are arranged side by side, the terminal is provided to protrude outside the case, and the joint surface to which the connection member of each terminal is joined is an inclined surface that is inclined downward in the vertical direction. A gist of the invention is that the inclined surface faces a wall portion on one end side in the juxtaposed direction of the battery cells among the wall portions constituting the case.

本発明によれば、端子の腐食を抑止することができる。   According to the present invention, corrosion of the terminal can be suppressed.

第１の実施形態の電池パックを示す斜視図。The perspective view which shows the battery pack of 1st Embodiment. 第１の実施形態の電池パックを示す図１の２−２線断面図。The 2-2 sectional view taken on the line of FIG. 1 which shows the battery pack of 1st Embodiment. 第１の実施形態の電池セルを示す斜視図。The perspective view which shows the battery cell of 1st Embodiment. 第１の実施形態の端子を示す斜視図。The perspective view which shows the terminal of 1st Embodiment. （ａ）は第２の実施形態の二次電池を示す斜視図、（ｂ）は第２の実施形態の二次電池を示す側面図。(A) is a perspective view which shows the secondary battery of 2nd Embodiment, (b) is a side view which shows the secondary battery of 2nd Embodiment. 第２の実施形態の二次電池を示す断面図。Sectional drawing which shows the secondary battery of 2nd Embodiment. 従来技術の蓄電池の端子を示す側面図。The side view which shows the terminal of the storage battery of a prior art.

（第１の実施形態）
以下、電池パックの一実施形態について説明する。
図１及び図２に示すように、電池パック１０は、ケース１１を有している。ケース１１には、複数の電池モジュール２２が収容されている。ケース１１は、底板１２と、底板１２の周縁から立設する側壁１３と、側壁１３に囲まれる開口部を閉塞する天板１４とを有している。ケース１１は、天板１４の外面（ケース１１の鉛直方向上方の面）に設けられた側面視三角形状をなす端子台１７を有している。端子台１７は、鉛直方向上方の面に鉛直方向下方に向けて傾斜する端子台傾斜面１８を有している。端子台１７は、樹脂から形成されている。端子台傾斜面１８は、天板１４の一端部に向けて傾斜している。 (First embodiment)
Hereinafter, an embodiment of the battery pack will be described.
As shown in FIGS. 1 and 2, the battery pack 10 has a case 11. A plurality of battery modules 22 are accommodated in the case 11. The case 11 includes a bottom plate 12, a side wall 13 standing from the periphery of the bottom plate 12, and a top plate 14 that closes an opening surrounded by the side wall 13. The case 11 has a terminal block 17 having a triangular shape in a side view provided on an outer surface of the top plate 14 (a surface above the case 11 in the vertical direction). The terminal block 17 has a terminal block inclined surface 18 that is inclined downward in the vertical direction on the upper surface in the vertical direction. The terminal block 17 is made of resin. The terminal block inclined surface 18 is inclined toward one end of the top plate 14.

図２及び図３に示すように、電池モジュール２２は、複数の電池セル２３を有している。電池セル２３は、正極２６及び負極２７を有している。電池モジュール２２において、電池セル２３の並設方向の両端の電池セル２３には、パワー線２４が接続されている。具体的にいえば、電池セル２３の並設方向両端の電池セル２３のうち、一方の電池セル２３の正極２６及び他方の電池セル２３の負極２７にはパワー線２４が接続されている。ケース１１内には、二つの接続台３１が収容されている。各電池モジュール２２に接続される同一極性のパワー線２４は、同一の接続台３１に電気的に接続されている。   As shown in FIGS. 2 and 3, the battery module 22 has a plurality of battery cells 23. The battery cell 23 has a positive electrode 26 and a negative electrode 27. In the battery module 22, power lines 24 are connected to the battery cells 23 at both ends in the direction in which the battery cells 23 are arranged side by side. Specifically, the power line 24 is connected to the positive electrode 26 of one battery cell 23 and the negative electrode 27 of the other battery cell 23 among the battery cells 23 at both ends in the juxtaposition direction of the battery cells 23. Two connection bases 31 are accommodated in the case 11. The same polarity power line 24 connected to each battery module 22 is electrically connected to the same connection base 31.

図２及び図４に示すように、天板１４及び端子台１７には、貫通孔４１，４２が形成されている。そして、この貫通孔４１，４２には、柱状の端子４３が挿入されている。端子４３には、軸方向に延び、ケース１１内とケース１１外とを連通する端子孔４５が形成されるとともに、この端子孔４５の内周面には、雌ねじが形成されている。端子４３は、二つ設けられている。   As shown in FIGS. 2 and 4, the top plate 14 and the terminal block 17 are formed with through holes 41 and 42. A columnar terminal 43 is inserted into the through holes 41 and 42. The terminal 43 is formed with a terminal hole 45 extending in the axial direction and communicating between the inside of the case 11 and the outside of the case 11, and a female screw is formed on the inner peripheral surface of the terminal hole 45. Two terminals 43 are provided.

端子４３の軸方向一端は、ケース１１内に露出している。端子４３の軸方向他端は端子台傾斜面１８を貫通してケース１１外に突出している。端子４３は、軸方向他端が端子台傾斜面１８から鉛直方向上方に突出している。端子台傾斜面１８は、端子４３の外周面に当接している。端子４３の軸方向他端（端子４３の鉛直方向上方の面）は、電池パック１０が設置された状態で鉛直方向下方に向けて傾斜する傾斜面となっており、後述する配線４８が接合される接合面として機能する。以降、端子４３の軸方向他端は、接合面４７として説明を行う。本実施形態における接合面４７は、天板１４の一端部に向けて傾斜している。   One end of the terminal 43 in the axial direction is exposed in the case 11. The other end of the terminal 43 in the axial direction penetrates the terminal block inclined surface 18 and protrudes out of the case 11. The other end in the axial direction of the terminal 43 protrudes upward in the vertical direction from the terminal block inclined surface 18. The terminal block inclined surface 18 is in contact with the outer peripheral surface of the terminal 43. The other end in the axial direction of the terminal 43 (the surface above the terminal 43 in the vertical direction) is an inclined surface that is inclined downward in the vertical direction in a state where the battery pack 10 is installed. It functions as a joint surface. Hereinafter, the other end in the axial direction of the terminal 43 will be described as the joint surface 47. The joint surface 47 in the present embodiment is inclined toward one end of the top plate 14.

図１及び図２に示すように、端子４３における接合面４７には、端子４３と、複数の電池セル２３から電力が供給される機器とを電気的に接続する接続部材としての配線４８が接続される。配線４８は、円環板状の接続部４９を有しており、この接続部４９を貫通したボルトＢが端子４３の端子孔４５に螺合されることで端子４３に接合されている。端子４３の軸方向一端には、接続台３１と端子４３とを電気的に接続するパワー線２５が接続され、端子４３と複数の電池セル２３（電池モジュール２２）とがパワー線２４，２５及び接続台３１を介して電気的に接続されている。   As shown in FIGS. 1 and 2, the bonding surface 47 of the terminal 43 is connected to a wiring 48 as a connecting member that electrically connects the terminal 43 and a device to which power is supplied from the plurality of battery cells 23. Is done. The wiring 48 has an annular plate-like connection portion 49, and the bolt B penetrating the connection portion 49 is screwed into the terminal hole 45 of the terminal 43 to be joined to the terminal 43. A power line 25 that electrically connects the connection base 31 and the terminal 43 is connected to one end in the axial direction of the terminal 43, and the terminal 43 and a plurality of battery cells 23 (battery modules 22) are connected to the power lines 24, 25 and It is electrically connected via the connection base 31.

端子台傾斜面１８には、立設部材としての平面視Ｕ字状のリブ５１が設けられている。リブ５１は、端子台傾斜面１８から立設しており、各端子４３を囲むように設けられている。リブ５１は、端子台傾斜面１８における端子４３より鉛直方向下方に位置する部分が開口している。リブ５１は、端子台傾斜面１８における端子より鉛直方向上方に位置する部分（端子台傾斜面１８を流れる液体の流通方向において端子４３より上流）に基部５２を有しており、この基部５２から端子４３を挟むように傾斜方向に一対の延設部５３が延びている。   The terminal block inclined surface 18 is provided with a rib 51 having a U-shape in plan view as a standing member. The rib 51 stands from the terminal block inclined surface 18 and is provided so as to surround each terminal 43. The rib 51 is open at a portion located vertically below the terminal 43 on the terminal block inclined surface 18. The rib 51 has a base 52 in a portion (upstream from the terminal 43 in the flow direction of the liquid flowing through the terminal block inclined surface 18) that is located vertically above the terminal in the terminal block inclined surface 18. A pair of extending portions 53 extend in the inclined direction so as to sandwich the terminal 43.

次に、本実施形態の電池パック１０の作用について説明する。
結露などによって、端子台傾斜面１８に液体（例えば、結露水）が生じると、液体は、端子台傾斜面１８を流れる。端子台傾斜面１８においてリブ５１に囲まれる領域外に生じた液体は、リブ５１によって端子４３に付着することが抑止される。また、リブ５１に囲まれる領域内に生じた液体は、端子台傾斜面１８を流れるため、端子台傾斜面１８での液体の滞留が抑止されている。 Next, the operation of the battery pack 10 of this embodiment will be described.
When liquid (for example, condensed water) is generated on the terminal block inclined surface 18 due to condensation or the like, the liquid flows on the terminal block inclined surface 18. The liquid generated outside the region surrounded by the ribs 51 on the terminal block inclined surface 18 is prevented from adhering to the terminals 43 by the ribs 51. Further, since the liquid generated in the region surrounded by the ribs 51 flows through the terminal block inclined surface 18, the retention of the liquid on the terminal block inclined surface 18 is suppressed.

本実施形態の電池パック１０では、結露などによって接合面４７に液体が生じた場合には、接合面４７が鉛直方向下方に向けて傾斜していることから、液体は接合面４７を流れるため、接合面４７に液体が滞留しにくい。   In the battery pack 10 of the present embodiment, when liquid is generated on the joint surface 47 due to condensation or the like, the liquid flows through the joint surface 47 because the joint surface 47 is inclined downward in the vertical direction. It is difficult for the liquid to stay on the joint surface 47.

ところで、電池パック１０の端子４３の接合面４７を傾斜させず、ケース１１全体を傾けることで、液体が滞留することを抑止することも考えられる。しかしながら、この場合には、電池パック１０が斜めに搭載されることで、電池パック１０が不安定になったり、電池パック１０を斜めに維持するための部材が必要となり、製造コストが増大するおそれや、電池パック１０が転倒するおそれがある。本実施形態のように、接合面４７を傾斜させることで、電池パック１０を傾けることなく、液体の滞留を抑止することができる。   By the way, it is also conceivable to prevent the liquid from staying by tilting the entire case 11 without tilting the joint surface 47 of the terminal 43 of the battery pack 10. However, in this case, since the battery pack 10 is mounted obliquely, the battery pack 10 becomes unstable or a member for maintaining the battery pack 10 obliquely is required, which may increase the manufacturing cost. In addition, the battery pack 10 may fall down. By tilting the joint surface 47 as in the present embodiment, liquid retention can be suppressed without tilting the battery pack 10.

したがって、上記実施形態によれば、以下のような効果を得ることができる。
（１）端子４３における接続部材（配線４８）との接合面４７が、傾斜しているため、端子４３の接合面４７に液体が滞留しにくく、液体による接合面４７の腐食が抑止されている。このため、接合面４７の腐食に伴い端子４３と接続部材との接触抵抗が大きくなることが抑止され、電力損失が大きくなりにくい。このため、例えば、電池パック１０が車両に搭載される場合には、車両の走行距離が短くなりにくい。 Therefore, according to the above embodiment, the following effects can be obtained.
(1) Since the joint surface 47 of the terminal 43 with the connecting member (wiring 48) is inclined, the liquid is unlikely to stay on the joint surface 47 of the terminal 43, and corrosion of the joint surface 47 by the liquid is suppressed. . For this reason, an increase in contact resistance between the terminal 43 and the connection member due to corrosion of the joint surface 47 is suppressed, and power loss is unlikely to increase. For this reason, for example, when the battery pack 10 is mounted on a vehicle, the travel distance of the vehicle is unlikely to be shortened.

（２）端子４３の周囲には、端子４３の外周面と当接する端子台傾斜面１８が設けられている。このため、端子４３の周囲に液体が生じたときに、端子４３の外周面に液体が滞留しにくく、液体が端子４３に付着しにくい。このため、端子４３の外周面の腐食を抑止することができる。   (2) Around the terminal 43, a terminal block inclined surface 18 that comes into contact with the outer peripheral surface of the terminal 43 is provided. For this reason, when liquid is generated around the terminal 43, the liquid does not easily stay on the outer peripheral surface of the terminal 43, and the liquid does not easily adhere to the terminal 43. For this reason, corrosion of the outer peripheral surface of the terminal 43 can be suppressed.

（３）リブ５１によって、端子台傾斜面１８における端子４３より鉛直方向上方から流れてくる液体が端子４３に付着することを抑止している。このため、端子４３が腐食することが更に抑止される。また、端子台１７を補強するリブ５１を端子４３に液体が付着することを抑止する立設部材として兼用しているため、部品点数を減らすことができる。   (3) The rib 51 prevents the liquid flowing from the upper side in the vertical direction from the terminal 43 on the terminal block inclined surface 18 from adhering to the terminal 43. For this reason, it is further suppressed that the terminal 43 corrodes. In addition, since the rib 51 that reinforces the terminal block 17 is also used as a standing member that prevents the liquid from adhering to the terminal 43, the number of parts can be reduced.

（第２の実施形態）
以下、二次電池の一実施形態について説明する。
図５及び図６に示すように、二次電池６１は、電池ケース６２に電極組立体６３が収容されている。電池ケース６２は、電極組立体６３を収容する有底箱状の本体部６４と、本体部６４の開口部を閉塞する板状の蓋部６５とから構成されている。蓋部６５には、端子６６（正極及び負極）が設けられている。電極組立体６３は、複数の正負の電極を積層してなる。端子６６は、導電部材６９を介して電極組立体６３に電気的に接続されている。蓋部６５は、蓋部６５の厚み方向に貫通する貫通孔６７を二箇所に有している。貫通孔６７には、絶縁リング６８が挿入されている。 (Second Embodiment)
Hereinafter, an embodiment of the secondary battery will be described.
As shown in FIGS. 5 and 6, in the secondary battery 61, an electrode assembly 63 is accommodated in a battery case 62. The battery case 62 includes a bottomed box-shaped main body 64 that houses the electrode assembly 63 and a plate-shaped lid 65 that closes the opening of the main body 64. The lid 65 is provided with a terminal 66 (positive electrode and negative electrode). The electrode assembly 63 is formed by laminating a plurality of positive and negative electrodes. The terminal 66 is electrically connected to the electrode assembly 63 via the conductive member 69. The lid portion 65 has two through holes 67 that penetrate in the thickness direction of the lid portion 65. An insulating ring 68 is inserted into the through hole 67.

端子６６は、貫通孔６７（絶縁リング６８）に挿通されて電池ケース６２内から電池ケース６２外に突出する円柱状の軸部７１を有している。軸部７１は、先端（電池ケース６２外に突出する端部）側の外周面に雄ねじが形成された螺合部７２を有している。また、軸部７１の基端（軸部７１の先端とは反対側の端部）側には、貫通孔６７の径よりも外形が大きい抜け防止部７３が設けられている。   The terminal 66 has a cylindrical shaft portion 71 that is inserted into the through hole 67 (insulating ring 68) and protrudes from the battery case 62 to the outside of the battery case 62. The shaft portion 71 has a threaded portion 72 in which a male screw is formed on the outer peripheral surface on the distal end (end portion protruding outside the battery case 62) side. Further, on the base end side of the shaft portion 71 (the end portion opposite to the tip of the shaft portion 71), a slip prevention portion 73 having an outer shape larger than the diameter of the through hole 67 is provided.

軸部７１の螺合部７２には、ナットＮ１が螺合されている。これにより、端子６６が蓋部６５に固定されている。また、軸部７１の先端面７４は、鉛直方向下方に向けて傾斜する傾斜面となっている。配線や、バスバーなどの接続部材が、この先端面７４に接続されるため、先端面７４が接合面となる。   A nut N <b> 1 is screwed into the screw portion 72 of the shaft portion 71. Thereby, the terminal 66 is fixed to the lid portion 65. The tip surface 74 of the shaft portion 71 is an inclined surface that is inclined downward in the vertical direction. Since connection members such as wiring and bus bars are connected to the distal end surface 74, the distal end surface 74 becomes a bonding surface.

したがって、上記実施形態によれば、以下のような効果を得ることができる。
（４）結露などによって、端子６６の先端面７４に液体が付着すると、液体は先端面７４の傾斜によって流れるため、液体が先端面７４に滞留しにくい。このため、先端面７４が腐食しにくく、接続部材と端子６６との接触抵抗が大きくなりにくい。したがって、電力損失が大きくなることを抑止することができる。 Therefore, according to the above embodiment, the following effects can be obtained.
(4) When liquid adheres to the tip surface 74 of the terminal 66 due to condensation or the like, the liquid flows due to the inclination of the tip surface 74, so that the liquid is unlikely to stay on the tip surface 74. For this reason, the front end surface 74 is hardly corroded, and the contact resistance between the connection member and the terminal 66 is not easily increased. Therefore, an increase in power loss can be suppressed.

なお、実施形態は以下のように変更してもよい。
○ 端子台傾斜面１８を設けなくてもよい。すなわち、端子４３は、平坦面に設けられていてもよい。 In addition, you may change embodiment as follows.
○ The terminal block inclined surface 18 may not be provided. That is, the terminal 43 may be provided on a flat surface.

○ リブ５１は、基部５２のみであってもよい。この場合でも、端子台傾斜面１８における端子４３よりも鉛直方向上方に設けられる基部５２によって、端子４３に液体が付着することが抑止される。また、リブ５１を設けなくてもよい。   The rib 51 may be only the base 52. Even in this case, it is possible to prevent the liquid from adhering to the terminal 43 by the base 52 provided in the vertical direction above the terminal 43 in the terminal block inclined surface 18. Further, the rib 51 may not be provided.

○ 接続部材は、バスバーであってもよい。
○ 接続台３１を設けることなく、パワー線２４を直接端子４３に接続してもよい。
○ 端子台１７は、樹脂製ではなくてもよい。例えば、絶縁部材がコーティングされた金属製であってもよい。 ○ The connecting member may be a bus bar.
The power line 24 may be directly connected to the terminal 43 without providing the connection base 31.
○ The terminal block 17 may not be made of resin. For example, it may be made of metal coated with an insulating member.

○ 実施形態では、端子台１７によって端子台傾斜面１８を形成したが、ケース１１の天板に直接端子台傾斜面を設けてもよい。また、端子台傾斜面１８は、ケース１１の外部に設けられていればよく、ケース１１に設けられていなくてもよい。   In the embodiment, the terminal block inclined surface 18 is formed by the terminal block 17, but the terminal block inclined surface may be provided directly on the top plate of the case 11. Further, the terminal block inclined surface 18 may be provided outside the case 11 and may not be provided in the case 11.

○ 第１の実施形態の二つの端子４３のうち、いずれか一方のみの接合面４７を傾斜面としてもよい。また、第２の実施形態の二つの端子６６のうち、いずれか一方の先端面７４のみを傾斜面としてもよい。   (Circle) it is good also considering the joining surface 47 of only any one among the two terminals 43 of 1st Embodiment as an inclined surface. Moreover, it is good also considering only any one front end surface 74 as an inclined surface among the two terminals 66 of 2nd Embodiment.

○ 接続台３１は、ケース１１に一体化されていてもよい。
○ 各接続台３１は、一体化されていてもよい。 The connection base 31 may be integrated with the case 11.
○ Each connection base 31 may be integrated.

１０…電池パック、１１…ケース、１７…端子台、１８…端子台傾斜面、２３…電池セル、４３，６６…端子、４７…接合面、５１…リブ、６１…二次電池、７４…先端面。   DESCRIPTION OF SYMBOLS 10 ... Battery pack, 11 ... Case, 17 ... Terminal block, 18 ... Terminal block inclined surface, 23 ... Battery cell, 43, 66 ... Terminal, 47 ... Joining surface, 51 ... Rib, 61 ... Secondary battery, 74 ... Tip surface.

Claims (3)

正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、
前記複数の電池セルが収容されるケースを備え、
前記ケースは、該ケースの鉛直方向上方の面に設けられる端子台を有し、
前記端子台の鉛直方向上方の面は、鉛直方向下方に向けて傾斜する端子台傾斜面を有し、
前記端子は、前記ケースの外部に突出して設けられるとともに、前記端子台における前記端子台傾斜面を貫通し、該端子台傾斜面から突出するように設けられ、
前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続するものであり、
前記端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であり、
前記端子台の前記端子台傾斜面における前記端子より鉛直方向上方に位置する部分には、前記端子台の前記端子台傾斜面から立設する立設部が設けられていることを特徴とする電池パック。 A battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal,
A case in which the plurality of battery cells are accommodated;
The case has a terminal block provided on a surface above the case in the vertical direction,
The vertical upper surface of the terminal block has a terminal block inclined surface inclined downward in the vertical direction,
The terminal is provided so as to protrude outside the case, penetrates the terminal block inclined surface of the terminal block, and is provided so as to protrude from the terminal block inclined surface,
The connecting member is for electrically connecting the terminal and a device to which power is supplied from the plurality of battery cells,
The joint surface to which the connection member of the terminal is joined is an inclined surface that is inclined downward in the vertical direction ,
The battery is characterized in that a standing portion that is erected from the terminal block inclined surface of the terminal block is provided in a portion of the terminal block that is positioned vertically above the terminal in the terminal block inclined surface. pack. 正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、  A battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal,
前記複数の電池セルが収容されるケースを備え、  A case in which the plurality of battery cells are accommodated;
前記ケースの外部に突出して設けられる前記端子を複数備え、  A plurality of the terminals provided to protrude outside the case;
前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続するものであり、  The connecting member is for electrically connecting the terminal and a device to which power is supplied from the plurality of battery cells,
各端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であり、  The joint surface to which the connection member of each terminal is joined is an inclined surface that is inclined downward in the vertical direction,
各端子の前記傾斜面は、鉛直方向下方に向けて傾斜する方向が同一であることを特徴とする電池パック。  The battery pack according to claim 1, wherein the inclined surfaces of the terminals have the same direction of inclining downward in the vertical direction. 正極及び負極を有する電池セルを複数有するとともに、前記正極又は前記負極と電気的に接続される端子と、前記端子に接合される接続部材とを有する電池パックであって、  A battery pack having a plurality of battery cells each having a positive electrode and a negative electrode, a terminal electrically connected to the positive electrode or the negative electrode, and a connecting member bonded to the terminal,
前記複数の電池セルが収容されるケースを備え、  A case in which the plurality of battery cells are accommodated;
前記接続部材は、前記端子と前記複数の電池セルから電力が供給される機器とを電気的に接続するものであり、  The connecting member is for electrically connecting the terminal and a device to which power is supplied from the plurality of battery cells,
前記複数の電池セルは、並設されており、  The plurality of battery cells are juxtaposed,
前記端子は、前記ケースの外部に突出して設けられ、  The terminal is provided to protrude outside the case,
各端子の前記接続部材が接合される接合面は、鉛直方向下方に向けて傾斜する傾斜面であり、  The joint surface to which the connection member of each terminal is joined is an inclined surface that is inclined downward in the vertical direction,
前記傾斜面は、前記ケースを構成する壁部のうち前記電池セルの並設方向の一端側の壁部を向いていることを特徴とする電池パック。  The said inclined surface has faced the wall part of the one end side of the parallel arrangement direction of the said battery cell among the wall parts which comprise the said case, The battery pack characterized by the above-mentioned.
JP2013201930A 2013-09-27 2013-09-27 Battery pack Expired - Fee Related JP6206042B2 (en)

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KR102408823B1 (en) * 2015-08-27 2022-06-13 삼성에스디아이 주식회사 Rechargeable battery
CN109155387B (en) * 2016-05-31 2022-07-08 松下知识产权经营株式会社 Terminal connection structure, battery laminate, and method for forming terminal connection structure
JP7359682B2 (en) * 2019-12-20 2023-10-11 ファナック株式会社 Motor drive device with busbar
JP7380528B2 (en) 2020-11-12 2023-11-15 住友電装株式会社 Terminal block
JP7380529B2 (en) * 2020-11-12 2023-11-15 住友電装株式会社 Terminal block

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JPS60193666U (en) * 1984-05-31 1985-12-23 株式会社ユアサコーポレーション storage battery
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JP2011233367A (en) * 2010-04-27 2011-11-17 Toyota Motor Corp Connection unit and power storage device
JP5211128B2 (en) * 2010-09-30 2013-06-12 三菱重工業株式会社 Assembled battery
JP2012119156A (en) * 2010-11-30 2012-06-21 Sanyo Electric Co Ltd Battery pack and electric vehicle equipped with the same
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