Battery and manufacture method thereof

• US 9,583,782 B2
• Filed: 07/18/2013
• Issued: 02/28/2017
• Est. Priority Date: 08/09/2012
• Status: Active Grant

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: Huang, Nung-Te, Shen, Yu-Cheng
• Primary Examiner(s): Ruddock, Ula C
• Assistant Examiner(s): BARROW, AMANDA J
• Application Number:
  US13/944,898
• Publication Number:
  US 20140045014A1
• Time in Patent Office: 1,321 Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/0431 Cells with wound or folded electrodes H01M10/045 takes precedence
• 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 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/267 having means for adapting to batteries or cells of different types or different sizes
• 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 29/49108 Electric battery cell making

Abstract

A battery includes a casing and a plurality of cell coils. The casing includes a bottom and a top, the bottom or the top surface of the casing are not symmetrical with each other and the multiple cell coils are placed in the casing and are electrically connected to each other. Each of the cell coils includes a positive node, a negative node and an insulation sheet, and the insulation sheet is between the positive node and the negative node. An outer diameter of the cell coil changes along with the shape of the casing. A manufacture method of a battery is provided.

Claims

1. A battery, comprising:

a casing including a bottom surface and a top surface, wherein the bottom surface and the top surface of the casing are not symmetrical with each other,

wherein the casing is divided into at least a first area and a second area, a distance between the bottom surface and the top surface in the first area defines a first height, and the top surface is sloped relative to the bottom surface throughout the entire second area so that a distance between the bottom surface and the top surface in the second area decreases progressively along a direction away from the first area throughout the entire second area;

a plurality of cell coils including a first cell coil and a second cell coil disposed in the casing and electrically connected to each other, wherein each of the cell coils includes at least a positive node, at least a negative node, and at least an insulation sheet,

wherein the insulation sheet is between the positive node and the negative node;

the first cell coil is disposed in the first area and the second cell coil is disposed in the second area;

an outer diameter of the first cell coil corresponds with the first height, an outer diameter of the second cell coil corresponds with the distance between the bottom surface and the top surface in the second area;

wherein the first cell coil and the second cell coil are wound with the same positive node, the same negative node and the same insulation sheet.

2. The battery according to claim 1, wherein the outer diameter of each of the cell coils increases with winding layers of the respective cell coil.

3. The battery according to claim 1, wherein a shape of a cross section of each of the cell coils is appropriate for an internal line of the casing.

4. The battery according to claim 1, wherein winding directions of at least the first cell coil and the second cell coil are opposite to each other.

5. The battery according to claim 1, wherein the battery further includes:

at least a positive outputting part electrically connected to the positive node of the second cell coil; and

at least a negative outputting part electrically connected to the negative node of the first cell coil.

6. The battery according to claim 1, wherein the battery further includes:

at least a positive outputting part electrically connected to the positive node of one of the cell coils; and

at least a negative outputting part electrically connected to the negative node of the same one of the cell coils.

7. A manufacturing method of a battery, wherein the battery is assembled to an electronic device, the manufacturing method of the battery comprising following steps:

providing a casing with an accommodating space and required power of the electronic device;

wherein the casing is divided into at least a first area and a second area, a distance between the bottom surface and the top surface in the first area defines a first height, and the top surface is sloped relative to the bottom surface throughout the entire second area so that a distance between the bottom surface and the top surface in the second area decreases progressively along a direction away from the first area throughout the entire second area,

overlapping and winding a positive node, a negative node and an insulation sheet to form a plurality of cell coils including a first cell coil and a second cell coil, wherein the insulation sheet is between the positive node and the negative node, the first cell coil is disposed in the first area and the second cell coil is disposed in the second area; and

configuring the plurality of cell coils in the casing to make an outer diameter of the first cell coil corresponding with the first height, an outer diameter of the second cell coil corresponding with the distance between the bottom surface and the top surface in the second area,

wherein the first cell coil and the second cell coil are wound with the same positive node, the same negative node and the same insulation sheet.

8. The manufacturing method of the battery according to claim 7, wherein the manufacturing method of the battery further includes:

determining whether the power provided by the first cell coil meets the required power of the electronic device when the outer diameter of the first cell coil in the first area appropriate for the first height of the casing; and

configuring the second cell coil in the second area when the power provided by the first cell coil is less than the required power of the electronic device.

9. The manufacturing method of the battery according to claim 7, wherein the manufacturing method further includes:

connecting at least a positive outputting part and at least a negative outputting part to the plurality of cell coils.