JP2014154340A - Battery jar laminate structure - Google Patents

Battery jar laminate structure Download PDF

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JP2014154340A
JP2014154340A JP2013022836A JP2013022836A JP2014154340A JP 2014154340 A JP2014154340 A JP 2014154340A JP 2013022836 A JP2013022836 A JP 2013022836A JP 2013022836 A JP2013022836 A JP 2013022836A JP 2014154340 A JP2014154340 A JP 2014154340A
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battery case
battery
flow path
cases
battery jar
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Yasunari Takauchi
康成 高内
Masahiro Imai
正浩 今井
Koji Ando
幸司 安藤
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a battery jar laminate structure having the degree of freedom in a molding shape of a battery jar and advantage in cost.SOLUTION: (1) A battery jar laminate structure includes a plurality of square type metallic battery jars 20 laminated in the lamination direction of the battery jar, and each of the plurality of battery jars 20 is constituted of first and second battery jar elements 30, 40 which are press molded products jointed to each other in the lamination direction of the battery jar. (2) In the battery jar laminate structure, a coolant passage forming part 50 for forming a coolant passage between two battery jars adjacent to each other out of the plurality of battery jars 20 laminated in the lamination direction of the battery jar is molded integrally with at least one of the first and second battery jar elements 30, 40.

Description

本発明は、複数の角型電池（Ｌｉイオン電池）の電槽（電池ケース）の積層構造に関する。   The present invention relates to a laminated structure of a battery case (battery case) of a plurality of prismatic batteries (Li ion batteries).

特開２０１１−１１３７０６号公報は、つぎの電槽積層構造を開示している。
（ａ）積層される複数の角型の電槽（電池ケース）の各電槽が、一部品構成である。
（ｂ）互いに隣り合う２つの電槽間に冷媒流路を形成するために、２つの電槽間に、電槽とは別体品の樹脂枠を配置している。 JP 2011-113706 A discloses the following battery case laminate structure.
(A) Each battery case of a plurality of stacked rectangular battery cases (battery cases) has a one-part configuration.
(B) In order to form a refrigerant flow path between two battery cases adjacent to each other, a resin frame separate from the battery case is disposed between the two battery cases.

しかし、従来の電槽積層構造には、つぎの問題点がある。
（ａ）各電槽が一部品構成であり、各電槽は深絞り成形にて成形されることが一般的である。そのため、各電槽の成形形状の自由度が比較的低い。
（ｂ）２つの電槽間に樹脂枠を配置しているため、複数の電槽を積層する際に各電槽間に樹脂枠を配置させる作業が必要である。そのため、複数の電槽を積層させるのに要する工数が多くなり、コスト上不利である。 However, the conventional battery case laminated structure has the following problems.
(A) Each battery case has a single component configuration, and each battery case is generally formed by deep drawing. Therefore, the degree of freedom of the shape of each battery case is relatively low.
(B) Since the resin frame is arranged between the two battery cases, it is necessary to arrange the resin frame between the battery cases when the plurality of battery cases are stacked. Therefore, the man-hour required for laminating a plurality of battery cases increases, which is disadvantageous in terms of cost.

特開２０１１−１１３７０６号公報JP 2011-113706 A

本発明の目的は、従来に比べて電槽の成形形状の自由度が高い電槽積層構造を提供することにある。
本発明の第２の目的は、従来に比べてコスト上有利な電槽積層構造を提供することにある。 The objective of this invention is providing the battery case laminated structure with a high freedom degree of the shaping | molding shape of a battery case compared with the past.
The second object of the present invention is to provide a battery case laminated structure which is advantageous in terms of cost as compared with the conventional case.

上記目的を達成する本発明はつぎの通りである。
（１） 電槽積層方向に積層される複数の角型の金属製の電槽を有し、
前記複数の電槽の各電槽は、前記電槽積層方向に互いに接合されるプレス成形品である第１、第２の電槽要素で構成されている、電槽積層構造。
（２） 前記第１、第２の電槽要素の少なくともいずれか一方に、前記電槽積層方向に積層される前記複数の電槽のうちの互いに隣り合う２つの電槽間に冷媒流路を形成する冷媒流路形成部が、一体成形されている、（１）記載の電槽積層構造。 The present invention for achieving the above object is as follows.
(1) having a plurality of rectangular metal battery cases stacked in the battery case stacking direction,
Each battery case of the plurality of battery cases is a battery case laminated structure composed of first and second battery case elements which are press-formed products joined to each other in the battery case lamination direction.
(2) A refrigerant flow path is provided between at least one of the first and second battery case elements between two battery cases adjacent to each other among the plurality of battery cases stacked in the battery case stacking direction. The battery case laminated structure according to (1), wherein a refrigerant flow path forming portion to be formed is integrally formed.

上記（１）の電槽積層構造によれば、各電槽が電槽積層方向に互いに接合されるプレス成形品である第１、第２の電槽要素で構成されているため、各電槽が一部品構成であり深絞り成形にて成形される場合に比べて、形状の自由度が高くなる。その結果、各電槽に冷媒流路形成部を一体に成形することができる。 According to the battery case laminated structure of (1) above, each battery case is composed of first and second battery case elements that are press-formed products joined together in the battery case lamination direction. Compared with the case where is a one-component configuration and is formed by deep drawing, the degree of freedom of shape is increased. As a result, the refrigerant flow path forming portion can be integrally formed in each battery case.

上記（２）の電槽積層構造によれば、第１、第２の電槽要素の少なくともいずれか一方に、電槽積層方向に積層される複数の電槽のうちの互いに隣り合う２つの電槽間に冷媒流路を形成する冷媒流路形成部が、一体成形されているため、互いに隣り合う２つの電槽間に冷媒流路を形成するために配置される樹脂枠を無くすことができる。そのため、複数の電槽を積層する際に各電槽間に樹脂枠を配置させる作業は不要である。そのため、従来に比べて、複数の電槽を積層させるのに要する工数が減り、コスト上有利である。   According to the battery case stacking structure of (2) above, two batteries adjacent to each other among a plurality of battery cases stacked in the battery case stacking direction on at least one of the first and second battery case elements. Since the refrigerant flow path forming portion that forms the refrigerant flow path between the tanks is integrally formed, the resin frame disposed to form the refrigerant flow path between two adjacent battery tanks can be eliminated. . Therefore, the operation | work which arrange | positions a resin frame between each battery case when laminating | stacking a some battery case is unnecessary. Therefore, compared with the prior art, the number of steps required to stack a plurality of battery cases is reduced, which is advantageous in terms of cost.

本発明実施例の電槽積層構造の、複数の電槽を積層した状態の模式側面図である。It is a model side view of the state which laminated | stacked the several battery case of the battery case laminated structure of this invention Example. 本発明実施例の電槽積層構造の、互いに隣り合う２つの電槽の模式分解側面図である。It is a model decomposition | disassembly side view of two battery cases adjacent to each other of the battery case lamination structure of this invention Example. 本発明実施例の電槽積層構造の、複数の電槽のうちの１つの電槽の斜視図である。It is a perspective view of one battery case of a plurality of battery cases of the battery case laminated structure of this invention Example. 本発明実施例の電槽積層構造の、複数の電槽のうちの１つの電槽の分解斜視図である。It is a disassembled perspective view of one battery case of the several battery case of the battery case laminated structure of this invention Example. 本発明実施例の電槽積層構造の、複数の電槽のうちの１つの電槽の正面図である。It is a front view of one battery case of a plurality of battery cases of the battery case laminated structure of the present invention example. 本発明実施例の電槽積層構造の変形例の、複数の電槽のうちの１つの電槽の斜視図である。It is a perspective view of one battery case in a plurality of battery cases of the modification of the battery case laminated structure of the example of the present invention. 本発明実施例の電槽積層構造の変形例の、互いに隣り合う２つの電槽の模式側面図である。It is a schematic side view of two battery cases adjacent to each other in a modified example of the battery case laminated structure of the embodiment of the present invention. 本発明実施例の電槽積層構造の変形例の、複数の電槽のうちの１つの電槽の斜視図である。It is a perspective view of one battery case in a plurality of battery cases of the modification of the battery case laminated structure of the example of the present invention.

以下に、本発明実施例の電槽積層構造を、図面を参照して説明する。なお、図中、ＵＰは上方を示す。
本発明実施例の電槽積層構造（装置）は、図１に示すように、電槽積層方向Ｄに積層される複数の電槽（電池ケース）２０を有する。 Below, the battery case laminated structure of this invention Example is demonstrated with reference to drawings. In the figure, UP indicates the upper side.
As shown in FIG. 1, the battery stack structure (apparatus) of the embodiment of the present invention has a plurality of battery cases (battery cases) 20 stacked in the battery stacking direction D.

電槽２０は、角型電池に用いられる電槽であり、角型である。電槽２０は、金属製であり、たとえばアルミニウム製である。各電槽２０は、第１、第２の電槽要素３０，４０で構成されている。第１、第２の電槽要素３０，４０は、それぞれ、図示略の一定厚の平板状素材をプレス成形（プレス機を用いた浅絞り成形）して作製される。すなわち、第１、第２の電槽要素３０，４０は、それぞれ、プレス成形品である。 The battery case 20 is a battery case used for a square battery, and is square. The battery case 20 is made of metal, for example, aluminum. Each battery case 20 is composed of first and second battery case elements 30 and 40. The first and second battery case elements 30 and 40 are respectively produced by press-forming (shallow drawing using a pressing machine) a flat plate material having a constant thickness (not shown). That is, each of the first and second battery case elements 30 and 40 is a press-formed product.

第１の電槽要素３０は、図４に示すように、電槽積層方向Ｄと直交する第１の平板部３０ａと、第１の平板部３０ａの左右両側縁および下縁から電槽積層方向Ｄに延びる第１の積層方向延び部３０ｂと、第１の積層方向延び部３０ｂの延び方向先端部から電槽積層方向Ｄと直交する方向に延びる第１のフランジ部３０ｃと、を備える。 As shown in FIG. 4, the first battery case element 30 includes a first flat plate portion 30a orthogonal to the battery case stacking direction D, and left and right side edges and a lower edge of the first flat plate portion 30a. A first stacking direction extending portion 30b extending to D, and a first flange portion 30c extending in a direction orthogonal to the battery case stacking direction D from the extending direction leading end of the first stacking direction extending portion 30b.

第２の電槽要素４０は、電槽積層方向Ｄと直交する第２の平板部４０ａと、第２の平板部４０ａの左右両側縁および下縁から電槽積層方向Ｄに延びる第２の積層方向延び部４０ｂと、第２の積層方向延び部４０ｂの延び方向先端部から電槽積層方向Ｄと直交する方向に延びる第２のフランジ部４０ｃと、を備える。第２の積層方向延び部４０ｂの第２の平板部４０ａからの延び方向は、第１の積層方向延び部３０ｂの第１の平板部３０ａからの延び方向と反対方向である。 The second battery case element 40 includes a second flat plate portion 40a orthogonal to the battery case stacking direction D, and a second stack extending in the battery case stacking direction D from the left and right side edges and the lower edge of the second flat plate portion 40a. A direction extending portion 40b and a second flange portion 40c extending in a direction orthogonal to the battery case stacking direction D from the extending direction front end portion of the second stacking direction extending portion 40b. The extending direction of the second stacking direction extending portion 40b from the second flat plate portion 40a is opposite to the extending direction of the first stacking direction extending portion 30b from the first flat plate portion 30a.

電槽２０は、図３に示すように、第１の電槽要素３０の第１のフランジ部３０ｃと第２の電槽要素４０の第２のフランジ部４０ｃとを互いに溶接することで作製される。なお、第１のフランジ部３０ｃと第２のフランジ部４０ｃとの溶接は、特に限定するものではないが、たとえばレーザ溶接である。 As shown in FIG. 3, the battery case 20 is manufactured by welding the first flange portion 30c of the first battery case element 30 and the second flange portion 40c of the second battery case element 40 to each other. The The welding of the first flange portion 30c and the second flange portion 40c is not particularly limited, but is, for example, laser welding.

電槽２０内には、図示略の電池（セル）が収納される。具体的には、電槽２０内に、正極板と負極板とをセパレータを介して積層してなる極板群（図示略）と電解液（図示略）とが、収納される。図２に示すように、電槽積層方向Ｄに積層される複数の電槽２０のうちの互いに隣り合う２つの電槽２０ａ，２０ｂ（複数の電槽２０のうちの互いに隣り合う２つの電槽２０の選び方は任意）は、一方の電槽２０ａの第１の電槽要素３０の第１の平板部３０ａと他方の電槽２０ｂの第２の電槽要素４０の第２の平板部４０ａとが電槽積層方向Ｄに対向している。 A battery (cell) (not shown) is accommodated in the battery case 20. Specifically, an electrode plate group (not shown) in which a positive electrode plate and a negative electrode plate are stacked via a separator and an electrolyte solution (not shown) are accommodated in the battery case 20. As shown in FIG. 2, two battery cases 20a and 20b adjacent to each other among the plurality of battery cases 20 stacked in the battery case stacking direction D (two battery cases adjacent to each other among the plurality of battery cases 20). 20 is arbitrary), the first flat plate portion 30a of the first battery case element 30 of one battery case 20a and the second flat plate portion 40a of the second battery case element 40 of the other battery case 20b Faces the battery case stacking direction D.

第１、第２の電槽要素３０，４０の少なくともいずれか一方に、互いに隣り合う２つの電槽２０ａ、２０ｂ間に冷媒流路Ｐ（図１参照）を形成する冷媒流路形成部５０が、一体成形されている。なお、図１〜図６、図８は、冷媒流路形成部５０が第１の電槽要素３０のみに一体成形される場合を示しており、図７は、冷媒流路形成部５０が第１、第２の電槽要素３０，４０の双方にそれぞれ一体成形される場合を示している。なお、冷媒流路Ｐを流れる冷媒は、たとえば気体であり空気である。 At least one of the first and second battery case elements 30 and 40 has a refrigerant flow path forming unit 50 that forms a refrigerant flow path P (see FIG. 1) between two adjacent battery cases 20a and 20b. It is integrally molded. 1 to 6 and 8 show a case where the refrigerant flow path forming portion 50 is integrally formed only with the first battery case element 30, and FIG. The case where it integrally molds to both the 1st and 2nd battery case elements 30 and 40 is shown. The refrigerant flowing through the refrigerant flow path P is, for example, gas and air.

冷媒流路形成部５０は、冷媒流路形成部５０が一体成形される部材（第１、第２の電槽要素３０，４０の少なくともいずれか一方）から、電槽積層方向Ｄに突出して（延びて）いる。冷媒流路形成部５０は、冷媒流路形成部５０が一体成形される部材に少なくとも１個設けられている。冷媒流路形成部５０が複数設けられる場合、複数の冷媒流路形成部５０のうちの少なくとも一部は、突出方向の先端部で、電槽積層方向Ｄに隣り合う位置にある電槽２０に当接している。 The refrigerant flow path forming part 50 protrudes in the battery case stacking direction D from a member (at least one of the first and second battery case elements 30 and 40) in which the refrigerant flow path forming part 50 is integrally formed ( Extended). At least one refrigerant flow path forming portion 50 is provided in a member in which the refrigerant flow path forming portion 50 is integrally formed. When a plurality of the refrigerant flow path forming portions 50 are provided, at least a part of the plurality of refrigerant flow path forming portions 50 is the tip portion in the protruding direction, and the battery case 20 at a position adjacent to the battery case stacking direction D It is in contact.

各冷媒流路形成部５０の形状は、特に限定するものではないが、（ｉ）図１〜図５、図７、図８に示すように、直線状または少なくとも１つの湾曲部または屈曲部を有して電槽積層方向Ｄと直交する方向に延びる長尺形状であってもよく、（ｉｉ）図６に示すように、電槽積層方向Ｄに突出する円柱状であってもよく、（ｉｉｉ）上記（ｉ）と上記（ｉｉ）との複合形状であってもよく、（ｉｖ）その他の形状であってもよい。 The shape of each refrigerant flow path forming portion 50 is not particularly limited. (I) As shown in FIGS. 1 to 5, 7, and 8, a linear shape or at least one curved portion or bent portion is provided. It may have an elongated shape extending in a direction perpendicular to the battery case stacking direction D, or (ii) a columnar shape protruding in the battery case stacking direction D as shown in FIG. iii) A composite shape of (i) and (ii) may be used, or (iv) other shapes may be used.

つぎに、本発明実施例の作用、効果を説明する。
本発明実施例では、各電槽２０が電槽積層方向Ｄに互いに接合されるプレス成形品である第１、第２の電槽要素３０，４０で構成されているため、各電槽２０が一部品構成であり深絞り成形にて成形される場合に比べて、形状の自由度が高くなる。その結果、各電槽２０に冷媒流路形成部５０を一体に成形することができる。 Next, the operation and effect of the embodiment of the present invention will be described.
In the embodiment of the present invention, each battery case 20 is composed of the first and second battery case elements 30 and 40 which are press-formed products joined to each other in the battery case lamination direction D. Compared to the case of one-part configuration and deep drawing, the shape is more flexible. As a result, the refrigerant flow path forming part 50 can be integrally formed in each battery case 20.

第１、第２の電槽要素３０，４０の少なくともいずれか一方に、電槽積層方向Ｄに積層される複数の電槽２０のうちの互いに隣り合う２つの電槽２０ａ、２０ｂ間に冷媒流路Ｐを形成する冷媒流路形成部５０が、一体成形されているため、互いに隣り合う２つの電槽２０ａ、２０ｂ間に冷媒流路Ｐを形成するために配置される樹脂枠（従来）を無くすことができる。そのため、複数の電槽２０を積層する際に各電槽２０間に樹脂枠を配置させる作業は不要である。そのため、従来に比べて、複数の電槽２０を積層させるのに要する工数が減り、コスト上有利である。   A refrigerant flow between two battery cases 20a and 20b adjacent to each other among a plurality of battery cases 20 stacked in a battery case stacking direction D on at least one of the first and second battery case elements 30 and 40. Since the refrigerant flow path forming portion 50 that forms the path P is integrally formed, a resin frame (conventional) disposed to form the refrigerant flow path P between the two adjacent battery cases 20a and 20b is provided. It can be lost. Therefore, when stacking a plurality of battery cases 20, an operation of arranging a resin frame between the battery cases 20 is not necessary. Therefore, compared with the conventional case, the number of steps required to stack the plurality of battery cases 20 is reduced, which is advantageous in terms of cost.

各電槽２０に冷媒流路形成部５０が一体成形されるため、各電槽２０に冷媒流路形成部５０が一体成形されていない場合に比べて、各電槽２０の表面積が増加し、各電槽２０の放熱効果を向上させることができる。
また、各電槽２０は、第１の電槽要素３０の第１のフランジ部３０ｃと第２の電槽要素４０の第２のフランジ部４０ｃとを互いに溶接することで作製されるため、第１、第２のフランジ部３０ｃ、４０ｃで構成されるフランジ部を有している。そのため、各電槽２０がフランジ部を有していない場合に比べて、各電槽２０の表面積が増加し、各電槽２０の放熱効果を向上させることができる。 Since the refrigerant flow path forming part 50 is integrally formed in each battery case 20, the surface area of each battery case 20 is increased as compared with the case where the refrigerant flow path forming part 50 is not integrally formed in each battery case 20, The heat dissipation effect of each battery case 20 can be improved.
Each battery case 20 is manufactured by welding the first flange portion 30c of the first battery case element 30 and the second flange portion 40c of the second battery case element 40 to each other. 1. It has the flange part comprised by the 2nd flange parts 30c and 40c. Therefore, compared with the case where each battery case 20 does not have a flange part, the surface area of each battery case 20 increases, and the heat dissipation effect of each battery case 20 can be improved.

各電槽２０に冷媒流路形成部５０が一体成形されるため、図７に示すように冷媒流路形成部５０が第１、第２の電槽要素３０，４０の双方にそれぞれ一体成形される場合、第１の電槽要素３０に設けられる冷媒流路形成部５０の一部を第２の電槽要素４０に設けられる冷媒流路形成部５０の一部で挟み込むなどすることにより、冷媒流路形成部５０を利用して互いに隣り合う電槽２０ａ、２０ｂ同士の相対位置決めをすることができる。 Since the refrigerant flow path forming part 50 is integrally formed in each battery case 20, the refrigerant flow path forming part 50 is integrally formed on both the first and second battery case elements 30, 40 as shown in FIG. The refrigerant flow path forming part 50 provided in the first battery case element 30 is sandwiched by a part of the refrigerant flow path forming part 50 provided in the second battery case element 40, etc. Using the flow path forming unit 50, the battery cases 20a and 20b adjacent to each other can be positioned relative to each other.

本発明実施例では、各電槽２０が第１、第２の電槽要素３０，４０の２部品で構成されている場合を説明したが、各電槽２０は、図８に示すように、電槽積層方向Ｄで第１、第２の電槽要素３０，４０の間に配置されて（第１、第２の電槽要素３０，４０に挟持されて）第１、第２の電槽要素３０，４０を溶接する際に同時に溶接される第３の電槽要素６０を少なくとも１個備えていてもよい。第３の電槽要素６０を備える場合、各電槽２０内に図示略の電池を２個以上（複数個）配置でき、多セル１モジュール体を構成することができる。 In the embodiment of the present invention, the case has been described in which each battery case 20 is composed of two parts of the first and second battery case elements 30 and 40. As shown in FIG. 1st and 2nd battery case which is arrange | positioned between the 1st, 2nd battery case elements 30 and 40 (between the 1st and 2nd battery case elements 30 and 40) by the battery case lamination direction D At least one third battery case element 60 to be welded simultaneously when the elements 30 and 40 are welded may be provided. When the third battery case element 60 is provided, two or more (a plurality of) unillustrated batteries can be arranged in each battery case 20, and a multi-cell one module body can be configured.

２０ 電槽（電池ケース）
２０ａ、２０ｂ 互いに隣り合う２つの電槽
３０ 第１の電槽要素
３０ａ 第１の平板部
３０ｂ 第１の積層方向延び部
３０ｃ 第１のフランジ部
４０ 第２の電槽要素
４０ａ 第２の平板部
４０ｂ 第２の積層方向延び部
４０ｃ 第２のフランジ部
５０ 冷媒流路形成部
６０ 第３の電槽要素
Ｄ 電槽積層方向
Ｐ 冷媒流路 20 Battery case (battery case)
20a, 20b Two battery cases 30 adjacent to each other First battery case element 30a First flat plate portion 30b First stacking direction extending portion 30c First flange portion 40 Second battery case element 40a Second flat plate portion 40b 2nd lamination direction extension part 40c 2nd flange part 50 Refrigerant flow path formation part 60 3rd battery case element D Battery case lamination direction P Refrigerant flow path

Claims (2)

電槽積層方向に積層される複数の角型の金属製の電槽を有し、
前記複数の電槽の各電槽は、前記電槽積層方向に互いに接合されるプレス成形品である第１、第２の電槽要素で構成されている、電槽積層構造。 It has a plurality of rectangular metal battery cases stacked in the battery case stacking direction,
Each battery case of the plurality of battery cases is a battery case laminated structure composed of first and second battery case elements which are press-formed products joined to each other in the battery case lamination direction. 前記第１、第２の電槽要素の少なくともいずれか一方に、前記電槽積層方向に積層される前記複数の電槽のうちの互いに隣り合う２つの電槽間に冷媒流路を形成する冷媒流路形成部が、一体成形されている、請求項１記載の電槽積層構造。   Refrigerant that forms a refrigerant flow path between two adjacent battery cases among the plurality of battery cases stacked in the battery case stacking direction on at least one of the first and second battery case elements. The battery case laminate structure according to claim 1, wherein the flow path forming portion is integrally formed.
JP2013022836A 2013-02-08 2013-02-08 Battery jar laminate structure Pending JP2014154340A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019096431A (en) * 2017-11-21 2019-06-20 トヨタ自動車株式会社 Battery pack, and manufacturing method of unit cell used for battery pack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019096431A (en) * 2017-11-21 2019-06-20 トヨタ自動車株式会社 Battery pack, and manufacturing method of unit cell used for battery pack
JP7037720B2 (en) 2017-11-21 2022-03-17 トヨタ自動車株式会社 How to manufacture an assembled battery and a cell used for the assembled battery

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