Secondary battery module
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2024-11-30
- Publication Date
- 2026-06-11
AI Technical Summary
【0014】 かくして、本発明の構成によれば、正極の集電箔に塗工された正極活物質層と負極の集電箔に塗工された負極活物質層とがセパレータを挟んで対向し、前記集電箔間に電解液が注入された積層構造を有するセルを複数接続してなる二次電池モジュールに於いて、各集電箔に少なくとも2つの電圧検出端子が設けられることから、そのうちの一方に異常が生じても、セル毎の電圧の検知及び電流の流出入が可能な状態が維持され、また、電圧検出端子の数が増えることで、各集電箔に於いて流出入可能な電流量を増大でき、バランシング処理に要する時間の短縮が可能となる。
Smart Images
Figure 2026095449000001_ABST
Abstract
Claims
[Claim 1] A secondary battery module comprising a plurality of cells connected together, each cell having a laminated structure in which a positive electrode active material layer coated on a positive electrode current collector foil and a negative electrode active material layer coated on a negative electrode current collector foil face each other with a separator in between, and an electrolyte injected between the current collector foils, wherein each of the current collector foils is provided with at least two voltage detection terminals. [Claim 2] A secondary battery module according to claim 1, wherein in each cell, a positive electrode active material layer coated on a positive electrode current collector foil and a negative electrode active material layer coated on a negative electrode current collector foil face each other with a separator in between. [Claim 3] A secondary battery module according to claim 1, wherein the current collector foil of the positive electrode and the current collector foil of the negative electrode of each cell are bonded together with the current collector foil of the negative electrode and the current collector foil of the positive electrode of the adjacent cell, thereby forming a bipolar electrode body. [Claim 4] A secondary battery module according to claim 1, wherein one of at least two voltage detection terminals in each cell is provided on different edges of the secondary battery module. [Claim 5] A secondary battery module according to claim 1, wherein one of the at least two voltage detection terminals in each cell is located at a point at least one-third of the way from the short edge of the secondary battery module.