Battery

• US 9,874,610 B2
• Filed: 06/20/2014
• Issued: 01/23/2018
• Est. Priority Date: 12/20/2011
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Ding, Jie
• Primary Examiner(s): Gray, David M
• Assistant Examiner(s): Harrison, Michael
• Application Number:
  US14/310,682
• Publication Number:
  US 20140312911A1
• Time in Patent Office: 1,313 Days
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 50/55 on the same side of the cell
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: H01M 6/5005 Auxiliary electrodes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention relates to a battery. The battery includes: a detecting apparatus, located inside the battery and on an anode or cathode end of the battery, and configured to detect an electric potential inside the battery; and a conducting wire, electrically connected to the detecting apparatus and insulated from the anode and cathode of the battery, and configured to export a value of the electric potential measured by the detecting apparatus. The battery according to embodiments of the present invention is provided with a built-in detecting apparatus, which is led out together with the anode and cathode of the battery by using the conducting wire electrically connected to the detecting apparatus. This design achieves accurate and reliable measurement of a potential at a single electrode.

Claims

1. A battery, comprising:

a battery core having an anode and a cathode;

an anode tab electrically connected to the anode, and a cathode tab electrically connected to the cathode;

a detecting apparatus, located inside the battery core at an anode end or a cathode end of the battery, comprising a reference electrode terminal and configured to detect an electric potential inside the battery;

a conducting wire, electrically connected to the reference electrode terminal of the detecting apparatus and insulated from the anode and the cathode of the battery, and configured to export a value of the electric potential to be measured by the detecting apparatus; and

wherein the conducting wire is connected to a single port within the battery, and wherein the anode tab or the cathode tab is connected to the single port of the battery.

2. The battery according to claim 1, wherein the detecting apparatus further comprises:

a temperature sensing terminal, configured to detect a temperature inside the battery; and

a second conducting wire configured to export a value of the temperature.

3. The battery according to claim 1, wherein the detecting apparatus further comprises:

a pressure sensing terminal, configured to detect a mechanical pressure inside the battery; and

a third conducting wire configured to export a value of the mechanical pressure.

4. The battery according to claim 1, wherein the detecting apparatus further comprises:

a temperature sensing terminal and a pressure sensing terminal, configured to detect a temperature and mechanical pressure inside the battery separately; and

a second conducting wire and a third conducting wire configured to export a value of the temperature and the mechanical pressure.

5. The battery according to claim 1, wherein the detecting apparatus comprises an electrically insulated encapsulation layer.

6. The battery according to claim 5, wherein the electrically insulated encapsulation layer comprises at least one of microporous polyethylene, an insulated ceramic particle, a TiO2 adhesive, an Al2O3 adhesive, a mixture of polymer adhesives or an electrically insulating material fully soaked by an electrolyte and having contact therewith.

7. The battery according to claim 1, wherein the conducting wire comprises an electrically insulated encapsulation layer.

8. The battery according to claim 7, wherein the electrically insulated encapsulation layer comprises at least one of polyester, polyurethane, polyester imide, acetal, microporous polyethylene, an insulated ceramic particle, a TiO2 adhesive, an Al2O3 adhesive or a mixture of polymer adhesives.

9. The battery according to claim 1, wherein the conducting wire is insulated from the anode or the cathode of the battery by using an insulation layer.

10. The battery according to claim 9, wherein the insulation layer comprises at least one of polyester, polyurethane, polyester imide, acetal, microporous polyethylene, an insulated ceramic particle, a TiO2 adhesive, an Al2O3 adhesive or a mixture of polymer adhesives.

13. The battery according to claim 1, wherein the single port comprises:

a first portion electrically connected to the conducting wire; and

a second portion electrically connected to the anode tab or cathode tab.

14. The battery according to claim 13, further comprising:

a cover comprising the first portion and the second portion of the single port.

11. A battery, comprising:

a battery core having an anode and a cathode;

an anode tab electrically connected to the anode, and a cathode tab electrically connected to the cathode;

a detecting apparatus, located inside the battery core at an anode end or a cathode end of the battery, comprising,

a reference electrode terminal configured to detect an electric potential inside the battery, and

a pressure sensing terminal configured to detect a mechanical pressure inside the battery;

a conducting wire, electrically connected to the reference electrode terminal of the detecting apparatus and insulated from the anode and the cathode of the battery, and configured to export a value of the electric potential to be measured by the detecting apparatus and a value of the mechanical pressure;

wherein the conducting wire is connected to a single port of the battery, wherein the anode tab or the cathode tab is connected to the single port of the battery; and

a cover comprising the single port.

12. The battery according to claim 11, wherein the single port comprises:

a first portion electrically connected to the conducting wire; and

a second portion electrically connected to the anode tab or cathode tab.