BATTERY AND MANUFACTURING METHOD THEREOF

• Main Authors: MORIOKA KAZUHIRO, OSUGA TSUTOMU, HONDA KAZUYOSHI, KOGA HIDEKAZU, KAWASE SATORU, HIRANO KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To achieve both of high capacity density and high reliability.SOLUTION: A battery 1 comprises a power-generation element 10 including a plurality of unit cells 100, each having a positive electrode layer 120, a negative electrode layer 110 and a solid electrolyte layer 130. The plurality of unit cells 100 are electrically connected in parallel, and they are laminated in a normal line direction of a principal face. The power-generation element 10 has side faces 13 and 14. In the side face 13, a positive electrode collector 121 of the positive electrode layer 120 protrudes from an end face of the negative electrode layer 110. In the side face 14, a negative electrode current collector 111 of the negative electrode layer 110 protrudes from an end face of the positive electrode layer 120. The battery 1 has: an insulative member 21 covering the end face of the negative electrode layer 110 of the side face 13; and an insulative member 22 covering the end face of the positive electrode layer 120 of the side face 14. The positive electrode collectors 121 are electrically connected with each other. The negative electrode current collectors 111 are electrically connected with each other.SELECTED DRAWING: Figure 1 【課題】高容量密度と高信頼性とを両立する。【解決手段】電池１は、正極層１２０、負極層１１０および固体電解質層１３０を有する複数の単位セル１００を含む発電要素１０を備える。複数の単位セル１００は、電気的に並列に接続され、かつ、主面法線方向に積層されている。発電要素１０は、側面１３および１４を有する。側面１３では、正極層１２０の正極集電体１２１が負極層１１０の端面より突出し、側面１４では、負極層１１０の負極集電体１１１が正極層１２０の端面より突出している。電池１は、側面１３の負極層１１０の端面を覆う絶縁部材２１と、側面１４の正極層１２０の端面を覆う絶縁部材２２と、を備える。複数の正極集電体１２１は、互いに電気的に接続され、複数の負極集電体１１１は、互いに電気的に接続されている。【選択図】図１