JP2012018908A - 2次電池 - Google Patents
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- 238000003466 welding Methods 0.000 claims description 12
- 230000004308 accommodation Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
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- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
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Abstract
【解決手段】電極組立体、前記電極組立体の一対の電極タブが外部に延長するように前記電極組立体を収容するパウチ、前記電極タブのうちの一つに付着され、前記パウチに接触し、陽性温度係数を有する抵抗素子、および、前記抵抗素子を押圧し、前記パウチの外部面領域に連結される押圧部材を含み、前記押圧部材が前記抵抗素子と前記パウチとの間の接触を維持する、2次電池。
【選択図】図1
Description
したがって、2次電池に対して抵抗体素子の温度検出性能に優れている必要がある。
また、前記押圧部材の前記前面壁は、前記負極端子および前記連結タブが配置される第1溝と第2溝を含んでも良い。
図1は、2次電池の斜視図であり、図2は、図1のパウチと押圧部材を分解した斜視図である。図1および図2を参照すれば、2次電池100は、電極組立体10、電極組立体10を内蔵するパウチ20、およびパウチ20に結合または付着される押圧部材30を含む。
図7は、第2実施例による2次電池において、フレームと押圧部材を分解した斜視図であり、図8は、図7のVIII−VIII線に沿って切断した断面図である。図7および図8を参照すれば、2次電池200は、第1実施例のパウチ20を実装するようにフレーム40をさらに含み、押圧部材230をフレーム40に結合する構造で形成する。
図9は、第3実施例による2次電池の斜視図であり、図10は、図9のパウチと押圧部材を分解した斜視図であり、図11は、図9のXI−XI線に沿って切断した断面図である。
11…第1電極(正極)
12…第2電極(負極)
13…セパレータ
14…第1タブ(正極タブ)
15…第2タブ(負極タブ)
16…第1端子(正極端子)
17…第2端子(負極端子)
18…抵抗体素子
19…連結タブ
20…パウチ
21…上部パウチ膜
22…下部パウチ膜
23…テラス
30、230、330…押圧部材
31…上方部
32…前方部
33、233…側方部
34…突出部
35…両面テープ
36、336…リブ
37…第1溝
38…第2溝
39…溶接ホール
40…フレーム
41…第1側面部
42…第2側面部
43…第3側面部
45…突起
46…収容部
100、200、300…2次電池
111、121…コーティング部
112、122…無地部
181…第1連結部
182…第2連結部
183…導電部
451、461、463…傾斜面
452、462…水平面
L11、L21…中間層
L12、L22…内層
L13、L23…外層
S…空間部
T…絶縁テープ
Claims (19)
- 電極組立体、
前記電極組立体の一対の電極タブが外部に延長するように前記電極組立体を収容するパウチ、
前記電極タブのうちの一つに付着され、前記パウチに接触し、陽性温度係数を有する抵抗素子、および
前記抵抗素子を押圧し、前記パウチの外部面領域に連結される押圧部材を含み、
前記押圧部材が前記抵抗素子と前記パウチとの間の接触を維持する、2次電池。 - 前記押圧部材は、
上方部、
前記上方部で延長する第1側壁および第2側壁、
前記第1側壁と第2側壁との間の前記上方部で延長する前面壁、および
前記第1側壁と第2側壁との間に配置され、前記上方部で延長する突出部を含み、
前記突出部が前記抵抗素子と前記パウチとの間の接触を維持する、請求項1に記載の2次電池。 - 前記パウチは、
第1パウチ膜および第2パウチ膜を含み、
前記第1パウチ膜および前記第2パウチ膜の周縁が融着されて前記電極組立体を前記パウチ内に密封し、前記電極タブの一部をその間に挿入するテラスを形成する、請求項2に記載の2次電池。 - 前記押圧部材は前記テラス上に配置され、前記突出部は前記抵抗素子を加圧して前記第1パウチ膜に接触するようにする、請求項3に記載の2次電池。
- 前記押圧部材は、前記第1側壁および前記第2側壁の間に配置され、前記上方部で延長するリブをさらに含み、
前記リブは、前記テラスに接触して前記押圧部材を構造的に強化する、請求項3に記載の2次電池。 - 前記押圧部材は、前記第1側壁および前記第2側壁の間に配置され、前記上方部で延長するリブをさらに含み、
前記リブは、前記電極タブのうちの一つの上に配置され、前記テラスに接触して前記押圧部材を構造的に強化する、請求項3に記載の2次電池。 - 前記抵抗素子は、
前記電極タブのうちの一つに付着される第1連結部、
前記第1連結部に付着され、前記陽性温度係数を有する導電部を含む第2連結部、および
前記第2連結部に付着される連結タブを含み、
前記連結タブは2次電池用正極端子を構成し、
前記電極タブのうちの他の一つは負極タブを構成する、請求項3に記載の2次電池。 - 前記パウチを収容し、第1側面部、第2側面部、前記第1側面部および前記第2側面部の間で延長する後面部を含むフレーム、
前記第1側面部で延長する第1楔形突起、および
前記第2側面部で延長する第2楔形突起をさらに含み、
前記押圧部材は、前記第1側壁に形成された第1係止部および前記第2側壁に形成された第2係止部を含み、
前記第1係止部および前記第2係止部は、それぞれ前記第1楔形突起および第2楔形突起を収容するように楔形収容部を含む、請求項2に記載の2次電池。 - 前記パウチを収容し、第1側面部、第2側面部、前記第1側面部および前記第2側面部の間で延長する後面部を含むフレーム、
前記第1側面部で延長する第1楔形突起、および
前記第2側面部で延長する第2楔形突起をさらに含み、
前記押圧部材は、前記第1側壁に形成された第1係止部および前記第2側壁に形成された第2係止部を含み、
前記第1係止部および前記第2係止部は、それぞれ前記第1楔形突起および第2楔形突起を収容するように楔形収容部を含む、請求項4に記載の2次電池。 - 前記押圧部材は、
前記第1連結部が前記電極タブのうちの一つに溶接され得るように前記上方部を貫通して形成される溶接ホール、および
前記第1側壁および第2側壁の間に配置され、前記上方部で延長するリブをさらに含み、
前記リブは、前記テラスに接触して前記押圧部材を構造的に強化する、請求項7に記載の2次電池。 - 前記押圧部材の前記前面壁は、前記負極端子および前記連結タブが配置される第1溝と第2溝を含む、請求項7に記載の2次電池。
- 前記電極タブのうちの一つは、前記第1パウチ膜および第2パウチ膜の間で突出して前記テラスの上に曲がり、
前記第1連結部は、
前記テラスと前記電極タブのうちの一つとの間に配置される第1部分、および
前記電極タブのうちの一つと前記第1部分の上に曲がる第2部分を含む、請求項7に記載の2次電池。 - 前記電極タブのうちの一つは、前記第1パウチ膜および第2パウチ膜の間で突出して前記テラスの上に曲がり、
前記第1連結部は、
前記テラスと前記電極タブのうちの一つとの間に配置される第1部分、および
前記電極タブのうちの一つと前記第1部分の上に曲がる第2部分を含む、請求項10に記載の2次電池。 - 電極組立体、
囲まれた部分と前記囲まれた部分の一端で延長するテラス部分とを含み、前記電極組立体が前記囲まれた部分内に配置されるパウチ、
前記電極組立体で前記テラス部分を過ぎて前記パウチの外部まで延長する一対の電極端子、および
前記パウチの前記テラス部分を覆い、前記電極端子のうちの一つを前記パウチの前記テラス部分に加圧する押圧部材を含む、2次電池。 - 前記電極端子のうちの一つは、陽性温度係数を含む、請求項14に記載の2次電池。
- 前記電極端子のうちの一つは、前記パウチと直接接触する、請求項15に記載の2次電池。
- 前記押圧部材は、
上方部、
前記上方部で延長する第1側壁および第2側壁、
前記第1側壁と第2側壁との間の前記上方部で延長する前面壁、および
前記第1側壁と第2側壁との間に配置され、前記上方部で延長する突出部を含み、
前記突出部が前記電極端子のうちの一つと前記テラスとの間の接触を維持する、請求項14に記載の2次電池。 - 前記パウチを収容し、第1側面部、第2側面部、前記第1側面部および第2側面部の間で延長する後面部を含むフレーム、
前記第1側面部で延長する第1楔形突起、および
前記第2側面部で延長する第2楔形突起をさらに含み、
前記押圧部材は、前記第1側壁に形成された第1係止部および前記第2側壁に形成された第2係止部を含み、
前記第1係止部および第2係止部は、それぞれ前記第1楔形突起および第2楔形突起を収容するように楔形収容部を含む、請求項17に記載の2次電池。 - 前記押圧部材は、
前記第1連結部が前記電極端子のうちの一つに溶接され得るように前記上方部を貫通して形成される溶接ホール、および
前記第1側壁および第2側壁の間に配置され、前記上方部で延長するリブをさらに含み、
前記リブは、前記テラスに接触して前記押圧部材を構造的に強化する、請求項17に記載の2次電池。
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