BATTERY STRUCTURE, ELECTRONIC DEVICE AND MANUFACTURING METHOD OF BATTERY STRUCTURE

• US 20150064528A1
• Filed: 07/08/2014
• Published: 03/05/2015
• Est. Priority Date: 08/29/2013
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Liu, Wan-Hsieh, Lin, Shu-Feng, Hu, Chih-Kai, Chou, Yung-Ling
• Granted Patent: US 10,497,915 B2
• Time in Patent Office: Days
• US Class Current: 429/94
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/049 Processes for forming or storing electrodes in the battery container
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/102 characterised by their shape or physical structure
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/105 Pouches or flexible bags
• CPC Class Codes: H01M 50/46 Separators, membranes or diaphragms characterised by their combination with electrodes
• CPC Class Codes: H01M 50/627 Filling ports
• CPC Class Codes: H01M 50/673 Containers for storing liquids; Delivery conduits therefor
• CPC Class Codes: H01M 6/46 of flat cells
• 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

Abstract

A battery structure including a first battery unit, a second battery unit, a separation membrane and a packing is provided. The first and the second battery units respectively include at least one anode, at least one cathode and a dielectric layer located between the at least one anode and the at least one cathode close to each other. The at least one anode and the at least one cathode are alternately stacked with each other. The second battery unit is stacked on the first battery unit. A dimension of the first battery unit is smaller than that of the second battery unit. The separation membrane is disposed between the first and the second battery units. The packing covers the first and the second battery units and the separation membrane. An electronic device including the battery structure, and a manufacturing method of the battery structure, are further provided.

Claims

1. A battery structure, comprising:

a first battery unit comprising at least one anode and at least one cathode alternately stacked with each other and a dielectric layer located between the at least one anode and the at least one cathode close to each other;

a second battery unit stacked on the first battery unit, the second battery unit comprising at least one anode and at least one cathode alternately stacked with each other and a dielectric layer located between the at least one anode and the at least one cathode close to each other, and a dimension of the first battery unit is smaller than a dimension of the second battery unit;

a separation membrane disposed between the first battery unit and the second battery unit; and

a packing covering the first battery unit, the second battery unit and the separation membrane.

2. The battery structure as claimed in claim 1, wherein the first battery unit is a spiral wound battery or a stacked battery, and the second battery unit is a spiral wound battery or a stacked battery.

3. The battery structure as claimed in claim 2, wherein stacked battery has a notch or a recess.

4. The battery structure as claimed in claim 2, wherein the at least one anode and the at least one cathode of the stacked battery are plate-shaped and are separated from each other by the corresponding dielectric layer, and the at least one anode, the at least one cathode and the corresponding dielectric layer are stacked along an axis.

5. The battery structure as claimed in claim 1, wherein the packing forms an accommodating space, the first battery unit and the second battery unit are located in the accommodating space, the accommodating space has a first region and a second region connected with each other whereby a port is formed between a junction thereof, the first battery unit and the second battery unit are stacked along an axis, and an orthogonal projection of the first region on the port is smaller than an orthogonal projection of the second region on the port.

6. The battery structure as claimed in claim 5, wherein first battery unit is located in the first region, and the second battery unit is located in the second region.

7. The battery structure as claimed in claim 1, wherein a profile of the packing substantially fits profiles of the first battery unit and the second battery unit.

8. The battery structure as claimed in claim 1, wherein the separation membrane contacts a first surface of the first battery unit and a second surface of the second battery unit, wherein the first surface faces towards and is insulated from the second surface, and electrodes near to the first surface and the second surface are cathodes.

9. The battery structure as claimed in claim 1, wherein the first battery unit has at least one contact for external connection, the second battery unit has at least one contact for external connection, the contact of the first battery unit and the contact of the second battery unit are firstly electrically connected to each other and then electrically connected to the outside, and the contact of the first battery unit and the contact of the second battery unit that are connected with each other are simultaneously positive or negative.

10. An electronic device, comprising:

a casing has an interior space; and

a battery structure, as claimed in claim 1, disposed in the accommodating space.

11. A manufacturing method of a battery structure, comprising:

providing a packing, wherein the packing pre-forms an accommodating space;

disposing a first battery unit into the accommodating space, wherein the first battery unit comprises at least one anode and at least one cathode alternately stacked with each other and a dielectric layer located between the at least one anode and the at least one cathode close to each other;

disposing a separation membrane into the accommodating space, and the separation membrane being located on the first battery unit;

stacking a second battery unit onto the separation membrane, wherein the second battery unit is located in the accommodating space, the second battery unit comprises at least one anode and at least one cathode alternately stacked with each other and a dielectric layer located between the at least one anode and the at least one cathode close to each other, and a dimension of the first battery unit is smaller than a dimension of the second battery unit;

injecting electrolytes into the accommodating space; and

sealing the packing.

12. The manufacturing method of the battery structure as claimed in claim 11, wherein the first battery unit is a spiral wound battery or a stacked battery, and the second battery unit is a spiral wound battery or a stacked battery.

13. The manufacturing method of the battery structure as claimed in claim 12, wherein the stacked battery has a notch or a recess.

14. The manufacturing method of the battery structure as claimed in claim 12, wherein the at least one anode and the at least one cathode of the stacked battery are plate-shaped and are separated from each other by the corresponding dielectric layer, and the at least one anode, the at least one cathode and the corresponding dielectric layer are stacked along an axis.

15. The manufacturing method of the battery structure as claimed in claim 11, wherein the accommodating space has a first region and a second region connected with each other whereby a port is formed between a junction thereof, an orthogonal projection of the first region on the port is smaller than an orthogonal projection of the second region on the port, the first battery unit is located in the first region, and the second battery unit is located in the second region.

16. The manufacturing method of the battery structure as claimed in claim 11, wherein a profile of the packing substantially fits profiles of the first battery unit and the second battery unit.

17. The manufacturing method of the battery structure as claimed in claim 11, wherein the separation membrane contacts a first surface of the first battery unit and a second surface of the second battery unit, wherein the first surface faces towards and is insulated from the second surface, and electrodes near to the first surface and the second surface are cathodes.

18. The manufacturing method of the battery structure as claimed in claim 11, wherein the first battery unit has at least one contact for external connection, the second battery unit has at least one contact for external connection, the contact of the first battery unit and the contact of the second battery unit are firstly electrically connected with each other and then electrically connected to the outside, and the contact of the first battery unit and the contact of the second battery unit that are connected with each other are simultaneously positive or negative.

19. The manufacturing method of the battery structure as claimed in claim 11, before the step of sealing the packing, further comprising:

hot sealing the packing; and

extracting excess gas and electrolyte from the accommodating space.