SYSTEM AND METHOD FOR DIFFERENTIATING SHORTING IN A BATTERY

• US 20150377948A1
• Filed: 06/30/2015
• Published: 12/31/2015
• Est. Priority Date: 06/30/2014
• Status: Active Grant

• Current Assignee: Celgard LLC (Asahi Kasei Corporation)
• Original Assignee: Celgard LLC (Asahi Kasei Corporation)
• Inventors: Zhang, Zhengming, Fang, Weifeng
• Granted Patent: US 10,656,195 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/52 Testing for short-circuits, leakage current or ground faults
• CPC Class Codes: H01M 10/4285 Testing apparatus
• 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 2220/10 Batteries in stationary systems, e.g. emergency power source in plant
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A system for differentiating short circuiting in a battery includes: a detector coupled to the battery; a monitor in communication with the detector, the monitor including a profile of a battery shorting behavior, and a comparator for matching data from the detector to the profile; and a controller for taking action based upon information from the detector. A method for detecting short circuiting in a battery includes the steps of: detecting a behavior of the battery; comparing the behavior of the battery to a predetermined battery behavior profile; determining the type of short based on the comparison; and taking mitigating action based on the determination. The system/method may monitor: temperature of the battery, heat generation from the battery, current flow through the battery, voltage drop across the battery, and/or combinations thereof. The system/method discriminates between the various battery shorting behaviors for aggressive response or passive response.

Claims

1. A system for differentiating short circuiting in a battery comprises:

a detector coupled to the battery;

a monitor in communication with the detector, the monitor including at least one profile of a battery shorting behavior, and a comparator for matching data from the detector to the profile; and

a controller for taking action based upon information from the detector.

2. The system of claim 1 wherein the detector monitors temperature of the battery, heat generation from the battery, current flow through the battery, voltage drop across the battery, and combinations thereof.

3. The system of claim 1 wherein said monitor has a plurality of profiles of various battery shorting behaviors.

4. The system of claim 3 wherein the controller discriminates between the various battery shorting behaviors for aggressive response or passive response.

5. The system of claim 1 for use in:

laboratories, testing facilities, alarm systems, battery control systems, vehicles, energy storage systems, smart grids, and/or home energy storage systems.

6. A method for detecting short circuiting in a battery comprises the steps of:

detecting a behavior of the battery;

comparing the behavior of the battery to a predetermined battery behavior profile;

determining the type of short based on the comparison; and

taking mitigating action based on the determination.

7. The method of claim 6 wherein behavior includes heat generation from the battery, current flow through the battery, voltage drop across the battery, and combinations thereof.

8. The method of claim 6 wherein the battery behavior profile includes a plurality of profiles of various battery shorting behaviors.

9. The method of claim 6 wherein the mitigating action being an aggressive response and/or a passive response.

10. The method of claim 6 for use in:

laboratories, testing facilities, alarm systems, battery control systems, vehicles, energy storage systems, smart grids, and/or home energy storage systems.

11. A system for differentiating and mitigating based on short circuiting in a battery comprises:

a detector means coupled to the battery;

a monitor means in communication with the detector, the monitor means including at least one profile of a battery shorting behavior, and a comparator means for matching data from the detector means to the profile;

a controller means for sending instructions or taking action based upon information from the detector means; and

,

an optional actuator means for taking action based upon instructions from the controller means.

12. The system of claim 11, wherein the battery is at least one of a battery, cell, pack, system, module (a plurality of cells coupled together), large pack (a plurality of modules coupled together), secondary (rechargeable) battery, lithium secondary battery, lithium secondary cell, polymer battery, gel battery, lithium ion battery, energy storage device, accumulator, capacitor, CE, EV, ESS, or BESS battery, cell, system or pack, or combinations thereof.