BATTERY DESIGN AND METHOD OF ASSEMBLY

• US 20150140418A1
• Filed: 11/14/2014
• Published: 05/21/2015
• Est. Priority Date: 11/15/2013
• Status: Abandoned Application

• Current Assignee: SAFT Groupe SA (Totalenergies Se)
• Original Assignee: SAFT Groupe SA (Totalenergies Se)
• Inventors: Duffield, Michael C., BLOSS, Matthew C., MARLID, Bjorn
• Application Number:
  US14/541,473
• Publication Number:
  US 20150140418A1
• Time in Patent Office: Days
• US Class Current: 429/185
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 10/0587 of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
• CPC Class Codes: H01M 2300/0028 characterised by the solvent
• CPC Class Codes: H01M 2300/0037 Mixture of solvents
• CPC Class Codes: H01M 50/112 Monobloc comprising multiple compartments
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/131 characterised by physical properties, e.g. gas permeability, size or heat resistance
• CPC Class Codes: H01M 50/14 for protecting against damage caused by external factors
• CPC Class Codes: H01M 50/147 Lids or covers
• CPC Class Codes: H01M 50/529 Intercell connections through partitions, e.g. in a battery casing
• CPC Class Codes: H01M 50/533 characterised by the shape of the leads or tabs
• CPC Class Codes: H01M 50/534 characterised by the material of the leads or tabs
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/4911 including sealing

Abstract

A monoblock battery assembly including an electrode assembly having at least one positive electrode, at least one negative electrode, one or more insulative sheets between the at least one positive electrode and the at least one negative electrode, and an outermost insulative layer which substantially encases the at least one positive electrode, the at least one negative electrode, and the one or more insulative sheets. A housing having a cavity for receiving the electrode assembly is provided and a cover is sealingly attached to the housing. A bussing is electrically connected to the at least one positive electrode and the at least one negative electrode of the electrode assembly.

Claims

1. A monoblock battery assembly comprising:

an electrode assembly having at least one positive electrode, at least one negative electrode, one or more insulative sheets between the at least one positive electrode and the at least one negative electrode, and an outermost insulative layer which substantially encases the at least one positive electrode, the at least one negative electrode, and the one or more insulative sheets;

a housing having a cavity for receiving the electrode assembly;

a cover sealingly attached to the housing; and

a bussing electrically connected to the at least one positive electrode and the at least one negative electrode of the electrode assembly.

2. The monoblock battery assembly as claimed in claim 1, wherein the monoblock battery assembly is a Lithium-Ion battery assembly.

3. The monoblock battery assembly as claimed in claim 1, wherein the outermost insulative layer is the same material as the one or more insulative sheets.

4. The monoblock battery assembly as claimed in claim 1, wherein the outermost insulative layer is a polymer.

5. The monoblock battery assembly as claimed in claim 1, wherein the battery assembly has at least one terminal on an exterior surface of the cover connected to the bussing inside the battery assembly with the cover sealing attached to the housing.

6. The monoblock battery assembly as claimed in claim 1, wherein the housing and the cover are made of a polymer material.

7. The monoblock battery assembly as claimed in claim 1, wherein the bussing is integrally molded and provided with the cover.

8. The monoblock battery assembly as claimed in claim 1, wherein the bussing extends downwardly from the cover for attachment to the electrode assembly.

9. The monoblock battery assembly as claimed in claim 1, wherein the electrode assembly is sealed in the cavity as a result of the cover being sealingly attached to the housing.

10. The monoblock battery assembly as claimed in claim 1, further comprising a second electrode assembly, and wherein the bussing electrically connects the electrode assembly and the second electrode assembly.

11. The monoblock battery assembly as claimed in claim 1, wherein the electrode assembly consists of:

the at least one positive electrode, the at least one negative electrode, the one or more insulative sheets between the at least one positive electrode and the at least one negative electrode, and the outermost insulative layer.

20. The monoblock battery assembly as claimed in claim 1, further comprising an electrolyte comprising an organic solvent selected from the group consisting of cyclic carbonates, linear carbonates, alkyl esters, ethers, lactones, nitriles and mixtures thereof.

12. A method for making a monoblock battery assembly comprising the steps of:

layering at least one positive electrode, at least one negative electrode, and one or more insulative sheets between the at least one positive electrode and the at least one negative electrode,

wrapping an insulative layer around the at least one positive electrode, at least one negative electrode, and the one or more insulative sheets to form an outermost insulative layer which substantially encases the at least one positive electrode, the at least one negative electrode, and the one or more insulative sheets to form an electrode assembly;

electrically connecting the bussing to the electrode assembly to form an electrode-bussing unit;

simultaneously placing the electrode-bussing unit into the housing, such that the electrode assembly is placed in a cavity of the housing and attaching the cover to the housing; and

sealing the cover to the housing.

13. The method of making the monoblock battery assembly as claimed in claim 12, wherein the bussing electrically connects the electrode assembly with a second electrode assembly.

14. The method of making the monoblock battery assembly as claimed in claim 12, wherein the battery assembly has at least one terminal on an exterior surface of the cover connected to the bussing inside the battery assembly with the cover sealing attached to the housing.

15. The method of making the monoblock battery assembly as claimed in claim 12, wherein the housing and the cover is made from a polymer material.

16. The method of making the monoblock battery assembly as claimed in claim 12, wherein the bussing extends downwardly from the cover for attachment to the electrode assembly.

17. The method of making the monoblock battery assembly as claimed in claim 12, wherein the monoblock battery assembly is a Lithium-Ion battery assembly.

18. The method of making the monoblock battery assembly as claimed in claim 12, wherein the outermost insulative layer is the same material as the one or more insulative sheets.

19. The method of making the monoblock battery assembly as claimed in claim 12, wherein the outermost insulative layer is a polymer.