TWI704711B - Battery module and battery pack - Google Patents

Battery module and battery pack Download PDF

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TWI704711B
TWI704711B TW108128170A TW108128170A TWI704711B TW I704711 B TWI704711 B TW I704711B TW 108128170 A TW108128170 A TW 108128170A TW 108128170 A TW108128170 A TW 108128170A TW I704711 B TWI704711 B TW I704711B
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adjacent
battery module
battery
cells
lead plate
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TW108128170A
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TW202015274A (en
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小野和彥
大津厚
柳沢毅
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日商本田技研工業股份有限公司
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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
    • H01M50/50—Current conducting connections for cells or batteries
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • 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)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A first battery module (22) includes unit cells (26), which are linearly arranged on lines substantially parallel to a first direction and also linearly arranged on lines in a second direction oblique to the first direction, as viewed from an electrode side of the unit cells (26). The electrodes of the unit cells (26) that are adjacent to each other in the first direction have different poles, while the electrodes of the unit cells (26) that are adjacent to each other in the second direction have identical poles. The first battery module (22) further includes electrically-conductive plates (30c to 30f) configured to connect, in series, the unit cells (26) that are adjacent to each other in the first direction, and connect, in parallel, the unit cells (26) that are adjacent to each other in the second direction.

Description

電池模組及電池組Battery module and battery pack

本發明係關於圓筒狀的複數單電池，以單電池的軸向成約略平行的狀態堆疊形成的電池模組，以及在外殼內具有複數電池模組的電池組。The present invention relates to a plurality of cylindrical cells, a battery module formed by stacking the cells in a state in which the axial directions of the cells are approximately parallel, and a battery pack having the plurality of battery modules in a casing.

相關技術之記載： 在日本特開2002-254934號公報，揭示著把複數個圓筒型電池串聯連接的電池組裝體並聯連接複數個的電池單元。Related technical records: Japanese Patent Application Publication No. 2002-254934 discloses that a battery assembly in which a plurality of cylindrical batteries are connected in series is connected in parallel to a plurality of battery cells.

在日本特開2002-254934號公報記載的技術，連接圓筒型電池彼此的導電板為複雜的形狀，有必要準備多種形狀的導電板，所以有電池單元的生產性差的問題。 本發明係為了解決前述問題而完成之發明，目的在於使導電板的形狀為單純的形狀，同時減少導電板形狀的種類，以提供可提高生產性的電池模組及電池組。 第1發明係圓筒狀的複數單電池(26)，以前述單電池(26)的軸向成約略平行的狀態堆疊形成的電池模組(22、24)，具有以下的特徵。 第1特徵：由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述單電池(26)，直線狀排列於第1方向，同時直線狀排列於對前述第1方向為斜方向的第2方向，相互鄰接於前述第1方向的前述單電池(26)的電極為異極，相互鄰接於前述第2方向的前述單電池(26)的電極為同極，具有於前述第1方向使鄰接的前述單電池(26)串聯連接，而於前述第2方向使鄰接的前述單電池(26)並聯連接之導線板(30c~30f、30k~30n)。 第2特徵：由前述單電池(26)的電極側來看前述電池模組(22、24)時，複數之前述單電池(26)，被配置於形成為約略長方形的第1區域(R1)，於前述第1區域(R1)內的角落部被配置在形成為約略三角形的第2區域(R2)的前述單電池(26)的數目，與在鄰接於前述第2區域(R2)的位置排列於前述第2方向的前述單電池(26)的數目為相同。 第3特徵：由前述單電池(26)的電極側來看前述電池模組(22、24)時，被配置於前述第2區域(R2)的前述單電池(26)，且相互鄰接於前述第1方向的前述單電池(26)的電極為同極。 第4特徵：由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述導線板(30c~30f、30k~30n)，具有被形成為與前述第1方向約略平行的直線狀之側面，及被形成為與前述第2方向約略平行的直線狀之側面。 第5特徵：於鄰接的前述導線板(30c~30f、30k~30n)之間具有絕緣壁(40)。 第2發明為在外殼(14)內具有複數前述電池模組(22、24)的電池組(10)，具有以下的特徵。 第6特徵：1個前述電池模組(22)，於前述第1方向之一方具有僅與鄰接的前述單電池(26)的正極連接的正極導線板(30a)，同時於前述第1方向之另一方具有僅與鄰接的前述單電池(26)的負極連接的負極導線板(30h)；與1個前述電池模組(22)鄰接配置的其他前述電池模組(24)，於前述第1方向之另一方具有僅與鄰接的前述單電池(26)的正極連接的正極導線板(30p)，同時於前述第1方向之一方具有僅與鄰接的前述單電池(26)的負極連接的負極導線板(30i)；1個前述電池模組(22)與其他之前述電池模組(24)，被串聯連接著。 第7特徵：被串聯連接的複數前述電池模組(22、24)之前述正極導線板(30a、30p)以及前述負極導線板(30h、30i)之中，把成為前述電池組(10)的電極之前述正極導線板(30a)以及前述負極導線板(30i)設於前述第1方向之同一方向側。 根據第1發明之第1特徵，可以提高電池模組的生產性。 根據第1發明之第2特徵，可以提高電池模組的生產性。 根據第1發明之第3特徵，可以提高電池模組的生產性。 根據第1發明之第4特徵，可以提高電池模組的生產性。 根據第1發明之第5特徵，可以防止導線板彼此短路。 根據第2發明之第6特徵，可以簡單地串聯連接電池模組與鄰接的電池模組。 根據第2發明之第7特徵，可以使電池組內的電路構成單純化。 前述目的、特徵及優點，應可以從參照附圖而說明之以下的實施型態之說明，而容易地理解。In the technique described in Japanese Patent Application Laid-Open No. 2002-254934, the conductive plates connecting cylindrical batteries have a complicated shape, and it is necessary to prepare conductive plates of various shapes, so there is a problem of poor productivity of the battery cells. The present invention is an invention made to solve the aforementioned problems, and the object is to make the shape of the conductive plate a simple shape while reducing the types of conductive plate shapes, so as to provide a battery module and a battery pack that can improve productivity. The first invention relates to a plurality of cylindrical cells (26). The battery modules (22, 24) are stacked in a state where the axial directions of the cells (26) are approximately parallel, and have the following characteristics. The first feature: When the battery module (22, 24) is viewed from the electrode side of the single cell (26), the single cell (26) is linearly arranged in the first direction and at the same time linearly arranged in the opposite direction to the first direction. The first direction is the second direction obliquely, the electrodes of the single cells (26) adjacent to each other in the first direction are different poles, and the electrodes of the single cells (26) adjacent to each other in the second direction are the same poles, There are lead plates (30c to 30f, 30k to 30n) for connecting the adjacent cells (26) in series in the first direction, and connecting the adjacent cells (26) in parallel in the second direction. The second feature: When the battery module (22, 24) is viewed from the electrode side of the single cell (26), the plurality of single cells (26) are arranged in the first region (R1) formed in an approximately rectangular shape , The number of the single cells (26) arranged in the second region (R2) formed into an approximately triangle at the corners in the first region (R1) is the same as the number of cells (26) adjacent to the second region (R2) The number of the single cells (26) arranged in the second direction is the same. The third feature: when the battery modules (22, 24) are viewed from the electrode side of the single cell (26), the single cells (26) are arranged in the second region (R2) and are adjacent to each other The electrodes of the aforementioned single cell (26) in the first direction are of the same polarity. The fourth feature: When the battery module (22, 24) is viewed from the electrode side of the single cell (26), the lead plate (30c~30f, 30k~30n) is formed so as to be approximately the same as the first direction. A parallel linear side surface and a linear side surface formed approximately parallel to the second direction. The fifth feature: An insulating wall (40) is provided between the adjacent lead plates (30c-30f, 30k-30n). The second invention is a battery pack (10) having a plurality of the aforementioned battery modules (22, 24) in a casing (14), and has the following characteristics. The sixth feature: one battery module (22) has a positive lead plate (30a) connected only to the positive electrode of the adjacent single cell (26) in one of the first directions, and at the same time in the first direction The other has a negative lead plate (30h) connected only to the negative electrode of the adjacent single battery (26); the other battery module (24) arranged adjacent to one of the battery modules (22), in the first The other direction has a positive lead plate (30p) connected only to the positive electrode of the adjacent cell (26), and one of the first directions has a negative electrode connected only to the negative electrode of the adjacent cell (26) Lead plate (30i); one aforementioned battery module (22) and other aforementioned battery modules (24) are connected in series. Seventh feature: Among the plurality of battery modules (22, 24) connected in series, the positive lead plates (30a, 30p) and the negative lead plates (30h, 30i) are the ones of the battery pack (10) The positive electrode lead plate (30a) and the negative electrode lead plate (30i) of the electrode are arranged on the same direction side of the first direction. According to the first feature of the first invention, the productivity of the battery module can be improved. According to the second feature of the first invention, the productivity of the battery module can be improved. According to the third feature of the first invention, the productivity of the battery module can be improved. According to the fourth feature of the first invention, the productivity of the battery module can be improved. According to the fifth feature of the first invention, the lead plates can be prevented from short-circuiting with each other. According to the sixth feature of the second invention, the battery module and the adjacent battery module can be easily connected in series. According to the seventh feature of the second invention, the circuit configuration in the battery pack can be simplified. The foregoing objects, features, and advantages should be easily understood from the description of the following embodiments described with reference to the drawings.

[較佳的實施型態] [電池組的構成] 圖1係電池組10之立體圖。圖2係第1電池模組22及第2電池模組24之立體圖。於圖1及圖2，顯示相互正交的X軸、Y軸及Z軸。於以下說明的其他圖式，也顯示對應於圖1及圖2的X軸、Y軸及Z軸之X軸、Y軸及Z軸。 電池組10，由外殼14、及被收容於外殼14內部的第1電池模組22及第2電池模組24所構成。外殼14由頂殼16、底殼18及外裝外殼20構成。 [電池模組之構成] 圖3係第1電池模組22及第2電池模組24之分解立體圖。第1電池模組22及第2電池模組24，分別具有複數單電池26、收容單電池26的電池夾持器28、及連接單電池26彼此的導線板30a~30p。 單電池26是外觀為圓筒形狀的鋰離子二次電池。又，單電池26，不限於鋰離子二次電池，亦可為鎳氫二次電池或鎳鎘二次電池等其他的二次電池。於電池夾持器28，被形成貫通Y軸方向的圓筒狀的複數收容孔32。單電池26，被收容於電池夾持器28的收容孔32內。 (第1電池模組之構成) 圖4A係由Y軸負方向側來看第1電池模組22之圖。圖4B係由Y軸正方向側來看第1電池模組22之圖。 如圖4A所示，單電池26，在第1電池模組22被收容於收容孔32的狀態，以單電池26的正極朝向Y軸負方向側的數目為24個，負極朝向Y軸負方向側的數目為18個的方式配置。此外，如圖4B所示，單電池26，在第1電池模組22被收容於收容孔32的狀態，以單電池26的正極朝向Y軸正方向側的數目為18個，負極朝向Y軸正方向側的數目為24個的方式配置。 由Y軸負方向側或Y軸正方向側來看第1電池模組22時，單電池26，被配置在形成為約略長方形的第1區域R1內。單電池26，直線狀地排列於約略平行於重力方向(Z軸方向)的第1方向，同時直線狀地排列於對重力方向(Z軸方向)為斜方向的第2方向。 又，第1方向亦可為不是對重力方向約略平行的方向，第2方向只要是對第1方向為斜方向即可，不是對重力方向為斜方向亦可。 第1區域R1之中，使第1區域R1的Z軸負方向側及正方向側的角落分別以約略三角形形成的區域為第2區域R2a、R2b，第1區域R1a之中，除了第2區域R2a、R2b以外的區域為第3區域R3。 由Y軸負方向側或Y軸正方向側來看第1電池模組22時，被配置於第2區域R2a及第2區域R2b的單電池26，係以分別使電極為同極的方式設置。換句話說，被配置在第2區域R2a及第2區域R2b的單電池26，以第1方向上相互鄰接的單電池26的電極成為同極的方式設置，同時以第2方向上相互鄰接的單電池26的電極成為同極的方式設置。 被配置於第2區域R2a及第2區域R2b的單電池26的數目分別為6個，與鄰接於第2區域R2a或第2區域R2b的位置排列於第2方向的單電池26的數目(6個)為相同。 由Y軸負方向側或Y軸正方向側來看第1電池模組22時，被配置在第3區域R3的單電池26，以第1方向上相互鄰接的單電池26的電極成為異極的方式設置，同時以第2方向上相互鄰接的單電池26的電極成為同極的方式設置。 第1電池模組22，具有8枚導線板30a~30h。導線板30a~30h，係藉由導電性材料形成的板構件。8枚導線板30a~30h之中，導線板30b、30g的形狀為相同，導線板30c~30f的形狀為相同。 導線板30a構成正極導線板。導線板30a，被形成為具有與第1方向約略平行的直線及與第2方向約略平行的直線之約略三角形狀。導線板30a，被形成對電池夾持器28突出於Z軸負方向側的電極部34P。導線板30a，被安裝於電池夾持器28的Y軸負方向側，使被配置於Z軸負方向側的第2區域R2a的單電池26的正極並聯連接(圖4A)。 導線板30b，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略梯形狀。導線板30b，被安裝於電池夾持器28的Y軸正方向側，使被配置於第2區域R2a的單電池26的負極並聯連接，同時使在鄰接於第2區域R2a的位置排列於第2方向的單電池26的正極並聯連接。進而，導線板30b，串聯連接被配置於第2區域R2a的單電池26的負極，與在鄰接於第2區域R2a的位置排列於第2方向的單電池26的正極(圖4B)。 導線板30c，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30c，被安裝於電池夾持器28的Y軸負方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30c，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖4A)。 導線板30d，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30d，被安裝於電池夾持器28的Y軸正方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30d，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖4B)。 導線板30e，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30e，被安裝於電池夾持器28的Y軸負方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30e，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖4A)。 導線板30f，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30f，被安裝於電池夾持器28的Y軸正方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30f，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖4B)。 導線板30g，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略梯形狀。導線板30g，被安裝於電池夾持器28的Y軸負方向側，使被配置於第2區域R2b的單電池26的正極並聯連接，同時使在鄰接於第2區域R2b的位置排列於第2方向的單電池26的負極並聯連接。進而，導線板30g，串聯連接被配置於第2區域R2b的單電池26的正極，與在鄰接於第2區域R2b的位置排列於第2方向的單電池26的負極(圖4A)。 導線板30h構成負極導線板。導線板30h，被形成為具有與第1方向約略平行的直線及與第2方向約略平行的直線之約略三角形狀。導線板30h，以Z軸正方向側由電池夾持器28的Y軸正方向側沿著Z軸正方向側的側面屈曲的方式形成(圖3)。導線板30h，被安裝於電池夾持器28的Y軸正方向側，並聯連接被配置於第2區域R2b的單電池26的負極(圖4B)。 (第2電池模組之構成) 圖5A係由Y軸負方向側來看第2電池模組24之圖。圖5B係由Y軸正方向側來看第2電池模組24之圖。 如圖5A所示，單電池26，在第2電池模組24被收容於收容孔32的狀態，以單電池26的正極朝向Y軸負方向側的數目為24個，負極朝向Y軸負方向側的數目為18個的方式配置。此外，如圖5B所示，單電池26，在第2電池模組24被收容於收容孔32的狀態，以單電池26的正極朝向Y軸正方向側的數目為18個，負極朝向Y軸正方向側的數目為24個的方式配置。 由Y軸負方向側或Y軸正方向側來看第2電池模組24時，單電池26，被配置在形成為約略長方形的第1區域R1內。單電池26，直線狀地排列於約略平行於重力方向(Z軸方向)的第1方向，同時直線狀地排列於對重力方向(Z軸方向)為斜方向的第2方向。 第1區域R1a之中，使第1區域R1a的Z軸負方向側及正方向側的角落分別以約略三角形形成的區域為第2區域R2a、R2b，第1區域R1a之中，除了第2區域R2a、R2b以外的區域為第3區域R3。 由Y軸負方向側或Y軸正方向側來看第2電池模組24時，被配置於第2區域R2a及第2區域R2b的單電池26，係以分別使電極為同極的方式設置。換句話說，被配置在第2區域R2a及第2區域R2b的單電池26，以第1方向上相互鄰接的單電池26的電極成為同極的方式設置，同時以第2方向上相互鄰接的單電池26的電極成為同極的方式設置。 被配置於第2區域R2a及第2區域R2b的單電池26的數目分別為6個，與鄰接於第2區域R2a或第2區域R2b的位置排列於第2方向的單電池26的數目(6個)為相同。 由Y軸負方向側或Y軸正方向側來看第2電池模組24時，被配置在第3區域R3的單電池26，以第1方向上相互鄰接的單電池26的電極成為異極的方式設置，同時以第2方向上相互鄰接的單電池26的電極成為同極的方式設置。 第2電池模組24，具有8枚導線板30i~30p。導線板30i~30p，係藉由導電性材料形成的板構件。8枚導線板30i~30p之中，導線板30j、30o的形狀為相同，導線板30k~30n的形狀為相同。 導線板30i構成負極導線板。導線板30i，被形成為具有與第1方向約略平行的直線及與第2方向約略平行的直線之約略三角形狀。導線板30i，被形成對電池夾持器28突出於Z軸負方向側的電極部34N。導線板30i，被安裝於電池夾持器28的Y軸正方向側，並聯連接被配置於Z軸負方向側的第2區域R2a的單電池26的負極(圖5B)。 導線板30j，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略梯形狀。導線板30j，被安裝於電池夾持器28的Y軸負方向側，使被配置於第2區域R2a的單電池26的正極並聯連接，同時使在鄰接於第2區域R2a的位置排列於第2方向的單電池26的負極並聯連接。進而，導線板30j，串聯連接被配置於第2區域R2a的單電池26的正極，與在鄰接於第2區域R2a的位置排列於第2方向的單電池26的負極(圖5A)。 導線板30k，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30k，被安裝於電池夾持器28的Y軸正方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30l，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖5B)。 導線板30l，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30l，被安裝於電池夾持器28的Y軸負方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30k，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖5A)。 導線板30m，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30m，被安裝於電池夾持器28的Y軸正方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30m，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖5B)。 導線板30n，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略平行四邊形狀。導線板30n，被安裝於電池夾持器28的Y軸負方向側，於第3區域R3使被配置於第2方向的單電池26的負極並聯連接，同時使同樣被配置於第2方向的單電池26的正極並聯連接。進而，導線板30n，串聯連接被配置於第2方向的單電池26的負極，與被配置在第2方向的單電池26的正極(圖5A)。 導線板30o，被形成為具有以與第1方向約略平行的直線以及與第2方向約略平行的直線為邊的約略梯形狀。導線板30o，被安裝於電池夾持器28的Y軸正方向側，使被配置於第2區域R2b的單電池26的負極並聯連接，同時使在鄰接於第2區域R2b的位置排列於第2方向的單電池26的正極並聯連接。進而，導線板30o，串聯連接被配置於第2區域R2b的單電池26的負極，與在鄰接於第2區域R2b的位置排列於第2方向的單電池26的正極(圖5B)。 導線板30p構成正極導線板。導線板30p，被形成為具有與第1方向約略平行的直線及與第2方向約略平行的直線之約略三角形狀。導線板30p，以Z軸正方向側由電池夾持器28的Y軸負方向側沿著Z軸正方向側的側面屈曲的方式形成(圖3)。導線板30p，被安裝於電池夾持器28的Y軸負方向側，並聯連接被配置於第2區域R2b的單電池26的正極(圖5A)。 [電池夾持器之構造] 圖6係圖4A、圖4B之VI-VI線之概略剖面圖。又，於圖6，單電池26未顯示剖面圖。電池夾持器28，在第1電池模組22及第2電池模組24使用共通的模組。 電池夾持器28，係將第1構件36與第2構件38之2個構件在Y軸方向組裝而形成。被安裝於電池夾持器28的鄰接的導線板30(例如導線板30c與導線板30e)之間被形成絕緣壁40。藉此防止導線板30彼此之短路。此外，絕緣壁40，突出於收容孔32的內周形而形成，藉此，防止單電池26由收容孔32脫落。 [關於電池組內的電流流向] 本實施型態的電池組10，以第1電池模組22與第2電池模組24之各個為1個組電池，第1電池模組22與第2電池模組24，如圖2、圖3所示藉由連結導線板41串聯連接。 圖7係顯示第1電池模組22及第2電池模組24內的電流流向之模式圖。電流在電池組10內以導線板30i→導線板30j→導線板30k→導線板30l→導線板30m→導線板30n→導線板30o→導線板30p→連結導線板41→導線板30h→導線板30g→導線板30f→導線板30e→導線板30d→導線板30c→導線板30b→導線板30a的方式流動。藉此，第1電池模組22的正極導線板之導線板30a，與第2電池模組24的負極導線板之導線板30i，可以一起配置於Z軸負方向側。 [作用效果] 藉由複數單電池26被並聯連接，以被並聯連接的複數單電池26為一組，複數組單電池26被串聯連接的方式構成第1電池模組22及第2電池模組24，可以增高電池組10的電壓，同時增大容量。 為了謀求第1電池模組22及第2電池模組24的小型化，在本實施型態的電池組10，由單電池26的電極側來看第1電池模組22或第2電池模組24時，單電池26，直線狀地排列於對重力方向約略平行的第1方向，同時直線狀排列於對重力方向為斜方向的第2方向。在此場合，連接各單電池26的導線板的形狀變得複雜，而有第1電池模組22、第2電池模組24及電池組10的生產性惡化的問題。 在此，在本實施型態的第1電池模組22及第2電池模組24，導線板30c~30f、30k~30n使於第2方向鄰接的單電池26並聯連接，於第1方向鄰接的單電池26串聯連接。藉此，導線板30c~30f、30k~30n，被形成為具有約略平行於第1方向的邊與約略平行於第2方向的邊之約略平行四邊形狀，可以使導線板30c~30f、30k~30n的形狀單純化，可以提高第1電池模組22、第2電池模組24及電池組10的生產性。 此外，在本實施型態之第1電池模組22及第2電池模組24，複數單電池26，被配置於形成為約略長方形的第1區域R1，於第1區域R1內的角落部被配置在形成為約略三角形的第2區域R2的單電池26的數目，與在鄰接於第2區域R2的位置排列於第2方向的單電池26的數目為相同。藉此，藉由導線板30b、30g、30j、30o，並聯連接被配置於第2區域R2的單電池26，同時並聯連接在鄰接於第2區域R2的位置排列於第2方向的單電池26，進而，可以串聯連接被配置於並聯連接的第2區域R2的單電池26，與在鄰接於並聯連接的第2區域R2的位置排列於第2方向的單電池26。此外，導線板30b、30g、30j、30o，被形成為具有約略平行於第1方向的邊與約略平行於第2方向的邊之約略梯形狀，可以使導線板30b、30g、30j、30o的形狀單純化，可以提高第1電池模組22、第2電池模組24及電池組10的生產性。 此外，在本實施型態的第1電池模組22及第2電池模組24，導線板30a~30p，具有被形成為與第1方向約略平行的直線狀之側面，及被形成為與第2方向約略平行的直線狀之側面。藉此，可以使導線板30a~30p的形狀單純化，可以提高第1電池模組22、第2電池模組24及電池組10的生產性。 此外，在本實施型態之第1電池模組22及第2電池模組24，電池夾持器28，於鄰接的導線板30a~30p之間具有絕緣壁40。藉此可以防止導線板30a~30p彼此之短路。 此外，在本實施型態之電池組10，第1電池模組22，於重力方向的下方(Z軸負方向側)具有僅與鄰接的單電池26的正極連接的導線板30a(正極導線板)，同時於重力方向之上方(Z軸正方向側)具有僅與鄰接的單電池26的負極連接的導線板30h(負極導線板)。進而，與第1電池模組22鄰接的第2電池模組24，於重力方向的上方(Z軸正方向側)具有僅與鄰接的單電池26的正極連接的導線板30p(正極導線板)，同時於重力方向的下方(Z軸負方向側)具有僅與鄰接的單電池26的負極連接的導線板30i(負極導線板)。接著，串聯連接在重力方向的上方之第1電池模組22的導線板30h，與第2電池模組24的導線板30p。藉此，第1電池模組22的導線板30h(負極導線板)與第2電池模組24的導線板30p(正極導線板)都被集約於重力方向的上方，所以可藉由連結導線板41簡單地串聯連接第1電池模組22與第2電池模組24。 此外，在本實施型態之電池組10，被串聯連接的第1電池模組22及第2電池模組24之導線板30a(正極導線板)、導線板30h(負極導線板)、導線板30p(正極導線板)及導線板30i(負極導線板)之中，把成為電池組10的電極之導線板30a(正極導線板)以及導線板30i(負極導線板)設於重力方向的下方(Z軸負方向側)。藉此，電池組10的成為電極的第1電池模組22的導線板30a(正極導線板)與第2電池模組24的導線板30i(負極導線板)都被集約於重力方向的下方，所以可使電池組10內的電路構成單純化。[Preferred implementation type] [Composition of battery pack] FIG. 1 is a perspective view of the battery pack 10. FIG. 2 is a perspective view of the first battery module 22 and the second battery module 24. In Fig. 1 and Fig. 2, the X-axis, Y-axis and Z-axis orthogonal to each other are shown. In the other drawings described below, the X-axis, Y-axis, and Z-axis corresponding to the X-axis, Y-axis, and Z-axis of FIGS. 1 and 2 are also displayed. The battery pack 10 is composed of a housing 14 and a first battery module 22 and a second battery module 24 housed in the housing 14. The casing 14 is composed of a top casing 16, a bottom casing 18 and an exterior casing 20. [The composition of the battery module] 3 is an exploded perspective view of the first battery module 22 and the second battery module 24. The first battery module 22 and the second battery module 24 each have a plurality of battery cells 26, a battery holder 28 for accommodating the battery cells 26, and lead plates 30a-30p for connecting the battery cells 26 to each other. The single cell 26 is a lithium ion secondary battery having a cylindrical appearance. In addition, the single cell 26 is not limited to a lithium ion secondary battery, and may be another secondary battery such as a nickel-hydrogen secondary battery or a nickel-cadmium secondary battery. The battery holder 28 is formed with a plurality of cylindrical receiving holes 32 penetrating the Y-axis direction. The cell 26 is housed in the accommodating hole 32 of the battery holder 28. (Configuration of the first battery module) 4A is a diagram of the first battery module 22 viewed from the negative direction side of the Y axis. 4B is a diagram of the first battery module 22 viewed from the positive side of the Y-axis. As shown in FIG. 4A, in the state where the first battery module 22 is housed in the accommodating hole 32, the number of single cells 26 is 24 with the positive electrode facing the negative side of the Y-axis, and the negative electrode facing the negative direction of the Y-axis. The number of sides is 18. In addition, as shown in FIG. 4B, the single battery 26, in the state where the first battery module 22 is housed in the receiving hole 32, the number of the single battery 26 whose positive electrode faces the positive direction of the Y axis is 18, and the negative electrode faces the Y axis. The number of sides in the positive direction is 24. When the first battery module 22 is viewed from the negative side of the Y-axis or the positive side of the Y-axis, the cells 26 are arranged in the first region R1 formed in an approximately rectangular shape. The cells 26 are linearly arranged in a first direction approximately parallel to the direction of gravity (Z-axis direction), and linearly arranged in a second direction oblique to the direction of gravity (Z-axis direction). In addition, the first direction may not be a direction approximately parallel to the direction of gravity, and the second direction may be an oblique direction with respect to the first direction, and may not be a direction oblique to the direction of gravity. In the first region R1, the corners of the first region R1 in the negative direction and the positive direction of the Z-axis are respectively formed by approximately triangular regions as the second regions R2a and R2b. Among the first region R1a, except for the second region The area other than R2a and R2b is the third area R3. When the first battery module 22 is viewed from the negative side of the Y-axis or the positive side of the Y-axis, the cells 26 arranged in the second region R2a and the second region R2b are arranged so that the electrodes are of the same polarity. . In other words, the cells 26 arranged in the second region R2a and the second region R2b are arranged such that the electrodes of the cells 26 adjacent to each other in the first direction become the same polarity, and at the same time, the cells 26 adjacent to each other in the second direction are arranged The electrodes of the single cell 26 are arranged so that they are of the same polarity. The number of cells 26 arranged in the second region R2a and the second region R2b is 6, respectively, which is the same as the number of cells 26 arranged in the second direction adjacent to the second region R2a or the second region R2b (6 ) Are the same. When the first battery module 22 is viewed from the negative side of the Y-axis or the positive side of the Y-axis, the cells 26 arranged in the third region R3 have different electrodes with the cells 26 adjacent to each other in the first direction. At the same time, the electrodes of the unit cells 26 adjacent to each other in the second direction are arranged in the same polarity. The first battery module 22 has eight lead plates 30a to 30h. The lead plates 30a to 30h are plate members formed of conductive materials. Among the eight wire plates 30a-30h, the shapes of the wire plates 30b and 30g are the same, and the shapes of the wire plates 30c-30f are the same. The lead plate 30a constitutes a positive lead plate. The lead plate 30a is formed in an approximately triangular shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction. The lead plate 30a is formed with an electrode portion 34P protruding to the battery holder 28 on the negative side of the Z-axis. The lead plate 30a is attached to the negative Y-axis side of the battery holder 28, and connects the positive electrodes of the single cells 26 arranged in the second region R2a on the negative Z-axis side in parallel (FIG. 4A ). The wire guide 30b is formed in a roughly trapezoidal shape with a straight line roughly parallel to the first direction and a straight line roughly parallel to the second direction as sides. The lead plate 30b is mounted on the positive side of the Y-axis of the battery holder 28 to connect the negative electrodes of the single cells 26 arranged in the second region R2a in parallel, and at the same time arrange them in the first region adjacent to the second region R2a. The positive electrodes of the two-directional single cells 26 are connected in parallel. Furthermore, the lead plate 30b connects in series the negative electrode of the unit cell 26 arranged in the second region R2a and the positive electrode of the unit cell 26 arranged in the second direction at a position adjacent to the second region R2a (FIG. 4B ). The lead plate 30c is formed in an approximately parallelogram shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30c is mounted on the negative side of the Y-axis of the battery holder 28, and in the third region R3, the negative electrodes of the cells 26 arranged in the second direction are connected in parallel, and the same is arranged in the second direction. The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30c connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 4A ). The lead plate 30d is formed in an approximately parallelogram shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30d is mounted on the positive side of the Y-axis of the battery holder 28, and in the third region R3, the negative electrodes of the cells 26 arranged in the second direction are connected in parallel, and the same is arranged in the second direction. The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30d connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 4B ). The lead plate 30e is formed in an approximately parallelogram shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30e is mounted on the negative side of the Y-axis of the battery holder 28, and connects the negative electrodes of the cells 26 arranged in the second direction in parallel in the third region R3, and at the same time makes the same arranged in the second direction The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30e connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 4A ). The lead plate 30f is formed in an approximately parallelogram shape with a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30f is mounted on the positive side of the Y-axis of the battery holder 28, and in the third region R3, the negative electrodes of the cells 26 arranged in the second direction are connected in parallel, and the same is arranged in the second direction. The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30f connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 4B ). The lead plate 30g is formed in a roughly trapezoidal shape with a straight line roughly parallel to the first direction and a straight line roughly parallel to the second direction as sides. The lead plate 30g is mounted on the negative side of the Y-axis of the battery holder 28 to connect the positive poles of the single cells 26 arranged in the second region R2b in parallel, and at the same time to arrange them in a position adjacent to the second region R2b. The negative electrodes of the two-directional single cells 26 are connected in parallel. Furthermore, the lead plate 30g connects in series the positive electrode of the unit cell 26 arranged in the second region R2b and the negative electrode of the unit cell 26 arranged in the second direction at a position adjacent to the second region R2b (FIG. 4A ). The lead plate 30h constitutes a negative lead plate. The lead plate 30h is formed in an approximately triangular shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction. The lead plate 30h is formed such that the positive Z-axis direction side is bent along the side surface of the positive Z-axis direction side of the battery holder 28 from the Y-axis positive direction side of the battery holder 28 (FIG. 3). The lead plate 30h is attached to the positive side of the Y-axis of the battery holder 28, and connects in parallel to the negative electrode of the single cell 26 arranged in the second region R2b (FIG. 4B ). (Configuration of the second battery module) FIG. 5A is a diagram of the second battery module 24 viewed from the negative direction side of the Y axis. FIG. 5B is a diagram of the second battery module 24 viewed from the positive side of the Y axis. As shown in FIG. 5A, the cell 26, in the state where the second battery module 24 is housed in the accommodating hole 32, the number of cells 26 with the positive electrode facing the negative direction of the Y-axis is 24, and the negative electrode facing the negative direction of the Y-axis The number of sides is 18. In addition, as shown in FIG. 5B, the single cell 26, in the state where the second battery module 24 is housed in the receiving hole 32, the number of the single cell 26 whose positive electrode faces the positive side of the Y axis is 18, and the negative electrode faces the Y axis The number of sides in the positive direction is 24. When the second battery module 24 is viewed from the Y-axis negative direction side or the Y-axis positive direction side, the single cells 26 are arranged in the first region R1 formed in an approximately rectangular shape. The cells 26 are linearly arranged in a first direction approximately parallel to the direction of gravity (Z-axis direction), and linearly arranged in a second direction oblique to the direction of gravity (Z-axis direction). In the first region R1a, the corners of the first region R1a on the negative direction side and the positive direction side of the Z-axis are respectively formed as second regions R2a and R2b, and the first region R1a except for the second region The area other than R2a and R2b is the third area R3. When the second battery module 24 is viewed from the negative side of the Y-axis or the positive side of the Y-axis, the cells 26 arranged in the second region R2a and the second region R2b are arranged so that the electrodes are of the same polarity. . In other words, the cells 26 arranged in the second region R2a and the second region R2b are arranged such that the electrodes of the cells 26 adjacent to each other in the first direction become the same polarity, and at the same time, the cells 26 adjacent to each other in the second direction are arranged The electrodes of the single cell 26 are arranged so that they are of the same polarity. The number of cells 26 arranged in the second region R2a and the second region R2b is 6, respectively, which is the same as the number of cells 26 arranged in the second direction adjacent to the second region R2a or the second region R2b (6 ) Are the same. When the second battery module 24 is viewed from the negative side of the Y-axis or the positive side of the Y-axis, the cells 26 arranged in the third region R3 have different electrodes with the cells 26 adjacent to each other in the first direction. At the same time, the electrodes of the unit cells 26 adjacent to each other in the second direction are arranged in the same polarity. The second battery module 24 has eight lead plates 30i to 30p. The lead plates 30i to 30p are plate members formed of conductive materials. Among the eight wire plates 30i-30p, the shapes of the wire plates 30j and 30o are the same, and the shapes of the wire plates 30k-30n are the same. The lead plate 30i constitutes a negative lead plate. The lead plate 30i is formed in an approximately triangular shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction. The lead plate 30i is formed with an electrode portion 34N protruding to the battery holder 28 on the negative side of the Z axis. The lead plate 30i is attached to the positive Y-axis side of the battery holder 28, and connects in parallel the negative electrodes of the single cells 26 arranged in the second region R2a on the negative Z-axis side (FIG. 5B). The lead plate 30j is formed in a roughly trapezoidal shape with a straight line roughly parallel to the first direction and a straight line roughly parallel to the second direction as sides. The lead plate 30j is mounted on the negative side of the Y-axis of the battery holder 28 to connect the positive electrodes of the single cells 26 arranged in the second region R2a in parallel, and at the same time arrange them in the second region adjacent to the second region R2a. The negative electrodes of the two-directional single cells 26 are connected in parallel. Furthermore, the lead plate 30j connects in series the positive electrode of the unit cell 26 arranged in the second region R2a and the negative electrode of the unit cell 26 arranged in the second direction at a position adjacent to the second region R2a (FIG. 5A ). The lead plate 30k is formed in an approximately parallelogram shape with a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30k is mounted on the positive side of the Y-axis of the battery holder 28. The negative electrode of the cell 26 arranged in the second direction is connected in parallel in the third region R3, and the same is arranged in the second direction. The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 301 connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 5B ). The lead plate 301 is formed in an approximately parallelogram shape with a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 301 is mounted on the negative side of the Y-axis of the battery holder 28, and the negative electrodes of the cells 26 arranged in the second direction are connected in parallel in the third region R3, and the same arranged in the second direction The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30k connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 5A ). The lead plate 30m is formed in an approximately parallelogram shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30m is mounted on the positive side of the Y-axis of the battery holder 28. In the third region R3, the negative electrodes of the cells 26 arranged in the second direction are connected in parallel, and the same is arranged in the second direction. The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30m connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 5B ). The lead plate 30n is formed in an approximately parallelogram shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction as sides. The lead plate 30n is mounted on the negative side of the Y-axis of the battery holder 28. The negative poles of the cells 26 arranged in the second direction are connected in parallel in the third region R3, and the same arranged in the second direction The positive electrodes of the single cells 26 are connected in parallel. Furthermore, the lead plate 30n connects in series the negative electrode of the unit cell 26 arranged in the second direction and the positive electrode of the unit cell 26 arranged in the second direction (FIG. 5A ). The wire guide 30o is formed in a roughly trapezoidal shape with a straight line roughly parallel to the first direction and a straight line roughly parallel to the second direction as sides. The lead plate 30o is mounted on the positive side of the Y-axis of the battery holder 28 to connect the negative electrodes of the single cells 26 arranged in the second region R2b in parallel, and at the same time arrange them in a position adjacent to the second region R2b. The positive electrodes of the two-directional single cells 26 are connected in parallel. Furthermore, the lead plate 30o connects in series the negative electrode of the unit cell 26 arranged in the second region R2b and the positive electrode of the unit cell 26 arranged in the second direction at a position adjacent to the second region R2b (FIG. 5B ). The lead plate 30p constitutes a positive lead plate. The lead plate 30p is formed in a roughly triangular shape having a straight line approximately parallel to the first direction and a straight line approximately parallel to the second direction. The lead plate 30p is formed so that the positive Z-axis direction side is bent along the side surface of the positive Z-axis direction from the negative Y-axis side of the battery holder 28 (FIG. 3 ). The lead plate 30p is attached to the negative side of the Y-axis of the battery holder 28, and is connected in parallel to the positive electrode of the single cell 26 arranged in the second region R2b (FIG. 5A). [Structure of battery holder] Fig. 6 is a schematic cross-sectional view taken along the VI-VI line of Figs. 4A and 4B. Also, in FIG. 6, the cross-sectional view of the single cell 26 is not shown. The battery holder 28 uses a common module for the first battery module 22 and the second battery module 24. The battery holder 28 is formed by assembling two members of the first member 36 and the second member 38 in the Y-axis direction. An insulating wall 40 is formed between adjacent lead plates 30 (for example, lead plate 30c and lead plate 30e) attached to battery holder 28. This prevents the lead plates 30 from being short-circuited with each other. In addition, the insulating wall 40 is formed to protrude from the inner circumference of the receiving hole 32, thereby preventing the single cell 26 from falling out of the receiving hole 32. [About the current flow in the battery pack] In the battery pack 10 of this embodiment, each of the first battery module 22 and the second battery module 24 is a battery pack. The first battery module 22 and the second battery module 24 are shown in Figures 2 and As shown in 3, the lead plates 41 are connected in series. FIG. 7 is a schematic diagram showing the current flow in the first battery module 22 and the second battery module 24. The current flows in the battery pack 10 in the form of wire plate 30i→wire plate 30j→wire plate 30k→wire plate 30l→wire plate 30m→wire plate 30n→wire plate 30o→wire plate 30p→connected wire plate 41→wire plate 30h→wire plate 30g→wire plate 30f→wire plate 30e→wire plate 30d→wire plate 30c→wire plate 30b→wire plate 30a. Thereby, the lead plate 30a of the positive lead plate of the first battery module 22 and the lead plate 30i of the negative lead plate of the second battery module 24 can be arranged on the negative direction side of the Z axis together. [Effect] By connecting a plurality of battery cells 26 in parallel, the first battery module 22 and the second battery module 24 are constructed in a way that the plurality of battery cells 26 connected in parallel form a group, and the plurality of battery cells 26 are connected in series. The voltage of the battery pack 10 increases the capacity at the same time. In order to reduce the size of the first battery module 22 and the second battery module 24, in the battery pack 10 of this embodiment, the first battery module 22 or the second battery module is viewed from the electrode side of the single cell 26 At 24 o'clock, the single cells 26 are linearly arranged in a first direction that is approximately parallel to the direction of gravity, and linearly arranged in a second direction that is oblique to the direction of gravity. In this case, the shape of the lead plate connecting the cells 26 becomes complicated, and there is a problem that the productivity of the first battery module 22, the second battery module 24, and the battery pack 10 deteriorates. Here, in the first battery module 22 and the second battery module 24 of this embodiment, the lead plates 30c to 30f, 30k to 30n connect the cells 26 adjacent in the second direction in parallel, and adjacent in the first direction The single cells 26 are connected in series. Thereby, the lead plates 30c-30f, 30k-30n are formed into approximately parallelogram shapes having sides approximately parallel to the first direction and sides approximately parallel to the second direction, so that the lead plates 30c-30f, 30k~ The simplified shape of 30n can improve the productivity of the first battery module 22, the second battery module 24, and the battery pack 10. In addition, in the first battery module 22 and the second battery module 24 of the present embodiment, the plurality of single cells 26 are arranged in the first region R1 formed into a roughly rectangular shape, and are covered at the corners of the first region R1. The number of cells 26 arranged in the second region R2 formed in an approximately triangle is the same as the number of cells 26 arranged in the second direction at positions adjacent to the second region R2. Thereby, the single cells 26 arranged in the second region R2 are connected in parallel by the lead plates 30b, 30g, 30j, and 30o, and the single cells 26 arranged in the second direction adjacent to the second region R2 are connected in parallel. Furthermore, the single cells 26 arranged in the second region R2 connected in parallel may be connected in series, and the cells 26 arranged in the second direction at a position adjacent to the second region R2 connected in parallel. In addition, the lead plates 30b, 30g, 30j, and 30o are formed in a roughly trapezoidal shape with sides approximately parallel to the first direction and sides approximately parallel to the second direction, so that the lead plates 30b, 30g, 30j, 30o The simplified shape can improve the productivity of the first battery module 22, the second battery module 24, and the battery pack 10. In addition, in the first battery module 22 and the second battery module 24 of this embodiment, the lead plates 30a to 30p have linear side surfaces formed approximately parallel to the first direction, and are formed to be aligned with the first Two directions are approximately parallel to the straight side. Thereby, the shape of the lead plates 30a to 30p can be simplified, and the productivity of the first battery module 22, the second battery module 24, and the battery pack 10 can be improved. In addition, in the first battery module 22 and the second battery module 24 of this embodiment, the battery holder 28 has an insulating wall 40 between the adjacent lead plates 30a-30p. Thereby, it is possible to prevent the short circuit between the lead plates 30a-30p. In addition, in the battery pack 10 of this embodiment, the first battery module 22 has a lead plate 30a (positive lead plate) that is connected only to the positive electrode of the adjacent single cell 26 below the gravity direction (the negative side of the Z-axis) ), and at the same time, there is a lead plate 30h (negative lead plate) connected only to the negative electrode of the adjacent cell 26 above the direction of gravity (the positive Z-axis direction side). Furthermore, the second battery module 24 adjacent to the first battery module 22 has a lead plate 30p (positive lead plate) connected only to the positive electrode of the adjacent cell 26 above the direction of gravity (the Z-axis positive direction side) At the same time, there is a lead plate 30i (negative lead plate) connected only to the negative electrode of the adjacent cell 26 below the direction of gravity (the negative direction side of the Z-axis). Next, the lead plate 30h of the first battery module 22 and the lead plate 30p of the second battery module 24 are connected in series in the upper direction of the gravity direction. As a result, the lead plate 30h (negative lead plate) of the first battery module 22 and the lead plate 30p (positive lead plate) of the second battery module 24 are gathered in the upper direction of the gravity direction, so the lead plates can be connected 41 simply connects the first battery module 22 and the second battery module 24 in series. In addition, in the battery pack 10 of this embodiment, the lead plates 30a (positive lead plates), lead plates 30h (negative lead plates), lead plates of the first battery module 22 and the second battery module 24 connected in series Among 30p (positive lead plate) and lead plate 30i (negative lead plate), lead plate 30a (positive lead plate) and lead plate 30i (negative lead plate) that are the electrodes of the battery pack 10 are placed under the direction of gravity ( Z axis negative direction side). As a result, the lead plate 30a (positive lead plate) of the first battery module 22 and the lead plate 30i (negative lead plate) of the second battery module 24 of the battery pack 10 serving as electrodes are gathered under the direction of gravity. Therefore, the circuit configuration in the battery pack 10 can be simplified.

10:電池組 22、24:電池模組 26:單電池 30a~30p:導線板 40:絕緣壁 R1:第1區域 R2:第2區域10: battery pack 22, 24: battery module 26: Single battery 30a~30p: wire board 40: insulating wall R1: Zone 1 R2: Zone 2

圖1係電池組之立體圖。 圖2係第1電池模組及第2電池模組之立體圖。 圖3係第1電池模組及第2電池模組之分解立體圖。 圖4A係由Y軸負方向側來看第1電池模組之圖。圖4B係由Y軸正方向側來看第1電池模組之圖。 圖5A係由Y軸負方向側來看第2電池模組之圖。圖5B係由Y軸正方向側來看第2電池模組之圖。 圖6係圖4A、圖4B之VI-VI線之概略剖面圖。 圖7係顯示第1電池模組及第2電池模組內的電流流向之模式圖。Figure 1 is a perspective view of the battery pack. Figure 2 is a perspective view of the first battery module and the second battery module. Fig. 3 is an exploded perspective view of the first battery module and the second battery module. Fig. 4A is a diagram of the first battery module viewed from the negative side of the Y-axis. Fig. 4B is a diagram of the first battery module viewed from the positive side of the Y-axis. Fig. 5A is a diagram of the second battery module viewed from the negative side of the Y-axis. Fig. 5B is a diagram of the second battery module viewed from the positive side of the Y-axis. Fig. 6 is a schematic cross-sectional view taken along the VI-VI line of Figs. 4A and 4B. Fig. 7 is a schematic diagram showing the current flow in the first battery module and the second battery module.

22:電池模組 22: battery module

26:單電池 26: Single battery

28:電池夾持器 28: Battery holder

30a、30c、30e、30g:導線板 30a, 30c, 30e, 30g: wire board

32:收容孔 32: Containment hole

34P:電極部 34P: Electrode

40:絕緣壁 40: insulating wall

R1:第1區域 R1: Zone 1

R2b、R2a:第2區域 R2b, R2a: Zone 2

R3:第3區域 R3: Zone 3

Claims (10)

一種電池模組(22、24)，係複數圓筒狀的單電池(26)，以前述單電池(26)的軸方向成約略平行的狀態堆疊形成的電池模組(22、24)，其特徵為：由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述單電池(26)，直線狀排列於第1方向，同時直線狀排列於對前述第1方向為斜方向的第2方向，相互鄰接於前述第1方向的前述單電池(26)的電極為異極，相互鄰接於前述第2方向的前述單電池(26)的電極為同極，具有於前述第1方向使鄰接的前述單電池(26)串聯連接，而於前述第2方向使鄰接的前述單電池(26)並聯連接之導線板(30c~30f、30k~30n)；由前述單電池(26)的電極側來看前述電池模組(22、24)時，複數之前述單電池(26)，被配置於形成為約略長方形的第1區域(R1)，於前述第1區域(R1)內的角落部被配置在形成為約略三角形的第2區域(R2)的前述單電池(26)的數目，與在鄰接於前述第2區域(R2)的位置排列於前述第2方向的前述單電池(26)的數目為相同。 A battery module (22, 24) is a plurality of cylindrical single cells (26) stacked in a state in which the axial directions of the foregoing single cells (26) are approximately parallel to each other. The feature is that when the battery module (22, 24) is viewed from the electrode side of the single cell (26), the single cell (26) is linearly arranged in the first direction, and at the same time linearly arranged in the opposite direction to the first The direction is an oblique second direction, the electrodes of the single cells (26) adjacent to each other in the first direction are different poles, and the electrodes of the single cells (26) adjacent to each other in the second direction are the same poles, having The lead plates (30c~30f, 30k~30n) that connect the adjacent cells (26) in series in the first direction, and connect the adjacent cells (26) in parallel in the second direction; When the battery module (22, 24) is viewed from the electrode side of the battery (26), the plurality of single cells (26) are arranged in the first region (R1) formed in an approximately rectangular shape in the first region ( The corners of R1) are arranged in the second area (R2) formed into an approximately triangular number of cells (26), and the number of cells (26) arranged in the second direction adjacent to the second area (R2) The number of the aforementioned single cells (26) is the same. 如申請專利範圍第1項之電池模組(22、24)，其中由前述單電池(26)的電極側來看前述電池模組(22、24)時，被配置於前述第2區域(R2)的前述單電池(26)，且相互鄰接於前述第1方向的前述單電池(26)的電極為同極。 For example, the battery module (22, 24) of the first item in the scope of patent application, when the battery module (22, 24) is viewed from the electrode side of the single cell (26), it is arranged in the second area (R2) ), and the electrodes of the single cells (26) adjacent to each other in the first direction are of the same polarity. 如申請專利範圍第1或2項之電池模組(22、24)，其中由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述導線板(30c~30f、30k~30n)，具有被形成為與前述第1方向約略平行的直線狀之側面，及被形成為與前述第2方向約略平行的直線狀之側面。 For example, when the battery module (22, 24) is viewed from the electrode side of the single cell (26), the lead plate (30c~30f) , 30k~30n), has a linear side surface formed approximately parallel to the first direction, and a linear side surface formed approximately parallel to the second direction. 如申請專利範圍第1或2項之電池模組(22、24)，其中於鄰接的前述導線板(30c~30f、30k~30n)之間具有絕緣壁(40)。 For example, the battery module (22, 24) of item 1 or 2 of the scope of patent application, wherein there is an insulating wall (40) between the adjacent lead plates (30c~30f, 30k~30n). 一種電池組(10)，其特徵為在外殼(14)內具有複數個圓筒狀的複數單電池(26)，以前述單電池(26)的軸方向成約略平行的狀態堆疊形成的電池模組(22、24)之電池組(10)；由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述單電池(26)，直線狀排列於第1方向，同時直線狀排列於對前述第1方向為斜方向的第2方向，相互鄰接於前述第1方向的前述單電池(26)的電極為異極，相互鄰接於前述第2方向的前述單電池(26)的電極為同極，具有於前述第1方向使鄰接的前述單電池(26)串聯連接，而於前述第2方向使鄰接的前述單電池(26)並聯連接 之導線板(30c~30f、30k~30n)；1個前述電池模組(22)，於前述第1方向之一方具有僅與鄰接的前述單電池(26)的正極連接的正極導線板(30a)，同時於前述第1方向之另一方具有僅與鄰接的前述單電池(26)的負極連接的負極導線板(30h)；與1個前述電池模組(22)鄰接配置的其他前述電池模組(24)，於前述第1方向之另一方具有僅與鄰接的前述單電池(26)的正極連接的正極導線板(30p)，同時於前述第1方向之一方具有僅與鄰接的前述單電池(26)的負極連接的負極導線板(30i)；1個前述電池模組(22)與其他之前述電池模組(24)，被串聯連接著。 A battery pack (10), characterized in that there are a plurality of cylindrical plural cells (26) in a housing (14), and a battery module formed by stacking the above-mentioned single cells (26) in a state that the axial direction is approximately parallel The battery pack (10) of the group (22, 24); when the battery module (22, 24) is viewed from the electrode side of the single cell (26), the single cell (26) is linearly arranged in the first direction , While linearly arraying in a second direction oblique to the first direction, the electrodes of the single cells (26) adjacent to each other in the first direction are different poles, and the cells adjacent to each other in the second direction The electrodes of (26) are of the same polarity, with adjacent single cells (26) connected in series in the first direction, and adjacent single cells (26) connected in parallel in the second direction The lead plate (30c~30f, 30k~30n); one of the aforementioned battery modules (22) has a positive lead plate (30a) connected only to the positive electrode of the adjacent single cell (26) in one of the aforementioned first directions ), while having a negative lead plate (30h) connected only to the negative electrode of the adjacent single cell (26) on the other side of the first direction; and the other battery module arranged adjacent to one of the battery modules (22) The group (24) has a positive lead plate (30p) connected only to the positive electrode of the adjacent cell (26) in the other of the first direction, and has only the adjacent cell in one of the first directions. A negative lead plate (30i) connected to the negative electrode of the battery (26); one of the aforementioned battery modules (22) and the other aforementioned battery modules (24) are connected in series. 如申請專利範圍第5項之電池組(10)，其中由前述單電池(26)的電極側來看前述電池模組(22、24)時，複數之前述單電池(26)，被配置於形成為約略長方形的第1區域(R1)，於前述第1區域(R1)內的角落部被配置在形成為約略三角形的第2區域(R2)的前述單電池(26)的數目，與在鄰接於前述第2區域(R2)的位置排列於前述第2方向的前述單電池(26)的數目為相同。 For example, the battery pack (10) of item 5 of the scope of patent application, when the battery module (22, 24) is viewed from the electrode side of the single cell (26), the plurality of single cells (26) are arranged in The first area (R1) formed in an approximately rectangular shape, and the corners in the first area (R1) are arranged in the second area (R2) formed in an approximately triangular shape. The number of the single cells (26) arranged in the second direction adjacent to the second region (R2) is the same. 如申請專利範圍第6項之電池組(10)，其中由前述單電池(26)的電極側來看前述電池模組(22、24)時，被配置於前述第2區域(R2)的前述單電池(26)，且相互鄰接於前述第1方向的前述單電池(26)的電極為同極。 For example, the battery pack (10) of item 6 of the scope of patent application, when the battery module (22, 24) is viewed from the electrode side of the single cell (26), it is arranged in the aforementioned second area (R2) The single cell (26), and the electrodes of the single cells (26) adjacent to each other in the first direction are of the same polarity. 如申請專利範圍第5~7項之任一之電池組(10)，其中由前述單電池(26)的電極側來看前述電池模組(22、24)時，前述導線板(30c~30f、30k~30n)，具有被形成為與前述第1方向約略平行的直線狀之側面，及被形成為與前述第2方向約略平行的直線狀之側面。 For example, the battery pack (10) of any one of the 5th to 7th items in the scope of the patent application, when the battery module (22, 24) is viewed from the electrode side of the single cell (26), the lead plate (30c~30f) , 30k~30n), has a linear side surface formed approximately parallel to the first direction, and a linear side surface formed approximately parallel to the second direction. 如申請專利範圍第5~7項之任一之電池組(10)，其中於鄰接的前述導線板(30c~30f、30k~30n)之間具有絕緣壁(40)。 For example, the battery pack (10) of any one of the 5th to 7th items in the scope of the patent application has an insulating wall (40) between the adjacent lead plates (30c~30f, 30k~30n). 如申請專利範圍第5~7項之任一之電池組(10)，其中被串聯連接的複數前述電池模組(22、24)之前述正極導線板(30a、30p)以及前述負極導線板(30h、30i)之中，把成為前述電池組(10)的電極之前述正極導線板(30a)以及前述負極導線板(30i)設於前述第1方向之同一方向側。For example, the battery pack (10) of any one of the 5th to 7th items in the scope of patent application, wherein the positive lead plates (30a, 30p) and the negative lead plates (30a, 30p) of the plurality of battery modules (22, 24) connected in series Among 30h and 30i), the positive lead plate (30a) and the negative lead plate (30i) used as electrodes of the battery pack (10) are arranged on the same direction side of the first direction.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201233585A (en) * 2010-11-22 2012-08-16 Yamaha Motor Co Ltd Battery pack for saddle type vehicle and saddle type vehicle
JP2018077933A (en) * 2016-11-07 2018-05-17 トヨタ自動車株式会社 Manufacturing method of battery module

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4749774B2 (en) * 2005-06-16 2011-08-17 本田技研工業株式会社 Assembled battery
JP2008097942A (en) * 2006-10-10 2008-04-24 Sanyo Electric Co Ltd Battery pack
JP5496746B2 (en) * 2010-03-31 2014-05-21 三洋電機株式会社 Battery pack
US8361646B2 (en) * 2010-03-15 2013-01-29 Electronvault, Inc. Modular interconnection system
JP4973824B2 (en) * 2010-07-30 2012-07-11 パナソニック株式会社 Battery module
JP6365186B2 (en) * 2014-09-29 2018-08-01 豊田合成株式会社 Busbar module
JP6414139B2 (en) * 2016-05-24 2018-10-31 トヨタ自動車株式会社 Battery pack
JPWO2018061737A1 (en) * 2016-09-29 2019-07-11 パナソニックＩｐマネジメント株式会社 Battery module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201233585A (en) * 2010-11-22 2012-08-16 Yamaha Motor Co Ltd Battery pack for saddle type vehicle and saddle type vehicle
JP2018077933A (en) * 2016-11-07 2018-05-17 トヨタ自動車株式会社 Manufacturing method of battery module

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