# US 8,785,033 B2 · Assembled battery

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- Number: US 8,785,033 B2
- Document ID: US8785033B2
- Status: Granted
- Kind: B2
- Application number: 10/234,318
- Filed: 2002-09-05
- Published: 2003-03-20
- Granted: 2014-07-22
- Earliest claimed: 2001-09-17
- Assignees: Nissan Motor Co., Ltd.
- Applicants: Kyoichi Watanabe; Hideaki Horie; Hiroshi Sugawara
- Inventors: Kyoichi Watanabe; Hideaki Horie; Hiroshi Sugawara
- Web page: https://patentgrep.com/patent/US8785033B2

## CPC

- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/0413: {Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes}
- H01M 10/0468: {Compression means for stacks of electrodes and separators}
- H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
- H01M 50/105: Pouches or flexible bags
- H01M 50/211: adapted for pouch cells
- H01M 50/227: Organic material
- H01M 50/236: Hardness
- H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658)
- H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
- H01M 4/587: for inserting or intercalating light metals
- H01M 6/42: Grouping of primary cells into batteries (H01M6/40 takes precedence)
- H01M 50/50: Current conducting connections for cells or batteries
- H01M 2004/029: {Bipolar electrodes}
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

In an assembled battery including at least two unit cells provided within a supporter, each unit cell is a thin laminate cell packaged with a laminate, and each unit cell is covered by at least one resin. Thus, the assembled battery has a stable performance without structure breakdown or a fracture of the connection tab even when vibration is applied.

## Claims

### Claim 1

An assembled battery, comprising:
a supporter;
a plurality of unit cells provided within the supporter, the unit cells being thin layer laminated cells having a cell member and tabs;
one or more resins covering the unit cells,
wherein the plurality of unit cells are stacked to form one or more laminate structures, and the one or more resins are poured between the cell members and between the unit cells and inner walls of the supporter,
wherein the tabs are embedded in the one or more resins, and
wherein a dielectric loss tangent of each of the one or more resins within a range of 10 to 1 kHz ranges from 1.0×10−3 to within a temperature range of −30 to 80° C.

### Claim 2 (depends on 1)

An assembled battery according to claim 1,
wherein the supporter is filled with a plurality of resins, and
an absolute value of hardness of each of the one or more resins provided between an inner wall of the supporter and each of the unit cells is smaller than that of the one or more resins provided between the unit cells.

### Claim 3 (depends on 1)

An assembled battery according to claim 1,
wherein a hardness JISA of each of the resins is within a range of 5-95 according to JIS K6253.

### Claim 4 (depends on 1)

An assembled battery according to claim 1,
wherein the one or more resins are selected from the group consisting of epoxy resin, urethane resin, nylon resin, olefin resin, and combinations thereof.

### Claim 5 (depends on 1)

An assembled battery according to claim 1,
wherein each of the unit cells is a lithium ion secondary cell using lithium manganate as a cathode active material and carbon as an anode active material.

### Claim 6 (depends on 1)

An assembled battery according to claim 1,
wherein each of the unit cells is a bipolar lithium ion secondary cell having a plurality of bipolar electrodes laminated in series with a solid polymer electrolyte sandwiched therebetween, each of the bipolar electrodes includes a cathode formed on one surface of a collector and an anode formed on the other surface thereof.

### Claim 7 (depends on 1)

An assembled battery according to claim 1,
wherein the supporter comprises an external terminal, and the external terminal is connected to one of the tabs of the unit cells by a connection lead, and
the connection lead is embedded in the one or more resins.

### Claim 8 (depends on 7)

An assembled battery according to claim 7,
wherein a part of the external terminal is embedded in the one or more resins.