JP2013149606A - 保護素子、保護素子の製造方法、及び、保護素子が組み込まれたバッテリモジュール - Google Patents
保護素子、保護素子の製造方法、及び、保護素子が組み込まれたバッテリモジュール Download PDFInfo
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Abstract
【解決手段】凹部11aが形成された基板11と、凹部11aに積層された発熱体12と、発熱体15を覆うように、基板11に積層された第2の基板13と、第2の基板13が積層された基板11の面上に積層された第1及び第2の電極14a、14bと、発熱体12と重畳するように第2の基板13の上に積層され、上記第1及び第2の電極14a、14bの間の電流経路上と発熱体12とに電気的に接続された発熱体電極15と、発熱体電極15から第1及び第2の電極14a、14bに亘って積層され、加熱により、第1の電極14aと第2の電極14bとの間の電流経路を溶断する低融点金属16とを備え、発熱体電極15は、基板11の厚み方向で規定される位置が、第1の電極14aと第2の電極14bとに対して、同一の位置に配置されている。
【選択図】 図3
Description
Claims (8)
- 凹部が形成された第1の絶縁部材からなる基板と、
上記基板の上記凹部に積層された発熱体と、
少なくとも上記発熱体を覆うように、上記基板に積層された第2の絶縁部材と、
上記第2の絶縁部材が積層された上記基板の面上に積層された第1及び第2の電極と、
上記発熱体と重畳するように上記第2の絶縁部材の上に積層され、上記第1及び第2の電極の間の電流経路上と該発熱体とに電気的に接続された発熱体電極と、
上記発熱体電極から上記第1及び第2の電極に亘って積層され、加熱により、該第1の電極と該第2の電極との間の電流経路を溶断する低融点金属とを備え、
上記発熱体電極は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極とに対して、同一の位置又は低い位置に配置されている保護素子。 - 上記発熱体と上記第2の絶縁部材は、上記基板に形成された上記凹部に埋設されている請求項1記載の保護素子。
- 上記発熱体は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極に対して低い位置に配置されている請求項1記載の保護素子。
- 上記第2の絶縁部材は、上記第1の絶縁部材よりも熱伝導性が高い部材である請求項3記載の保護素子。
- 凹部が形成された第1の絶縁部材からなる基板の凹部に発熱体を積層するステップと、
少なくとも上記発熱体を覆うように、上記基板に第2の絶縁部材を積層するステップと、
上記第2の絶縁部材が積層された上記基板の面上に、第1及び第2の電極を積層するステップと、
上記第1及び第2の電極の間の電流経路上と上記発熱体とに電気的に接続する発熱体電極を、上記発熱体と重畳するように上記第2の絶縁部材に積層するステップと、
加熱により、上記第1の電極と上記第2の電極との間の電流経路が溶断される低融点金属を、上記発熱体電極からと該第1及び第2の電極に亘って積層するステップとを有し、
上記発熱体電極は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極とに対して、同一の位置又は低い位置に配置される保護素子の製造方法。 - 1以上の充放電可能なバッテリセルからなるバッテリと、
上記バッテリと直列に接続され、該バッテリの充放電を制御する充放電制御回路と、
上記バッテリと上記充放電制御回路との間の充放電電流経路上に接続された保護素子と、
上記バッテリの各バッテリセルの電圧値を検出する検出回路と、
上記保護素子に流れる電流を制御する電流制御素子とを備え、
上記保護素子は、
凹部が形成された第1の絶縁部材からなる基板と、
上記基板の上記凹部に積層された発熱体と、
少なくとも上記発熱体を覆うように、上記基板に積層された第2の絶縁部材と、
上記第2の絶縁部材が積層された上記基板の面上に積層され、上記充放電電流経路に接続された第1及び第2の電極と、
上記発熱体と重畳するように上記第2の絶縁部材の上に積層され、上記第1及び第2の電極の間の電流経路上と該発熱体とに電気的に接続された発熱体電極と、
上記発熱体電極から上記第1及び第2の電極に亘って積層され、加熱により、該第1の電極と該第2の電極との間の電流経路を溶断する低融点金属とを有し、
上記発熱体電極は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極とに対して、同一の位置又は低い位置に配置されており、
上記電流制御素子は、上記検出回路により検出される各バッテリセルの電圧値が所定の範囲外となったときに上記発熱部電極から上記発熱部に電流が流れるように制御するバッテリモジュール。 - 絶縁部材からなる基板と、
上記基板の面上に積層された第1及び第2の電極と、
上記基板の面上の上記第1及び第2の電極間に積層された基板電極と、
上記基板電極から上記第1及び第2の電極に亘って積層され、加熱により、該第1の電極と該第2の電極との間の電流経路を溶断する低融点金属と、
上記基板の面上を覆うキャップと、
上記キャップの天面部に設けられた発熱体と、
上記基板の面上に積層され、上記キャップに形成された導電層を介して上記発熱体と電気的に接続された発熱体電極とを備え、
上記基板電極は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極とに対して、同一の位置又は低い位置に配置されている保護素子。 - 1以上の充放電可能なバッテリセルからなるバッテリと、
上記バッテリと直列に接続され、該バッテリの充放電を制御する充放電制御回路と、
上記バッテリと上記充放電制御回路との間の充放電電流経路上に接続された保護素子と、
上記バッテリの各バッテリセルの電圧値を検出する検出回路と、
上記保護素子に流れる電流を制御する電流制御素子とを備え、
上記保護素子は、
絶縁部材からなる基板と、
上記基板の面上に積層された第1及び第2の電極と、
上記基板の面上の上記第1及び第2の電極間に積層された基板電極と、
上記基板電極から上記第1及び第2の電極に亘って積層され、加熱により、該第1の電極と該第2の電極との間の電流経路を溶断する低融点金属と、
上記基板の面上を覆うキャップと、
上記キャップの天面部に設けられた発熱体と、
上記基板の面上に積層され、上記キャップに形成された導電層を介して上記発熱体と電気的に接続された発熱体電極とを備え、
上記基板電極は、上記基板の厚み方向で規定される位置が、上記第1の電極と上記第2の電極とに対して、同一の位置又は低い位置に配置されており、
上記電流制御素子は、上記検出回路により検出される各バッテリセルの電圧値が所定の範囲外となったときに上記発熱体電極から上記発熱部に電流が流れるように制御するバッテリモジュール。
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