BATTERY, AND METHOD, DEVICE, AND SYSTEM FOR BATTERY PROTECTION

• US 20150119116A1
• Filed: 08/15/2014
• Published: 04/30/2015
• Est. Priority Date: 10/25/2013
• Status: Active Grant

• Current Assignee: Xiaomi Inc. (Xiaomi Corp.)
• Original Assignee: Xiaomi Inc. (Xiaomi Corp.)
• Inventors: Zhang, Pengfei, XU, Bing, Li, Zhijie
• Granted Patent: US 9,325,189 B2
• Time in Patent Office: Days
• US Class Current: 455/573
• CPC Class Codes: G06F 1/28 Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0063 with circuits adapted for supplying loads from the battery
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H04B 1/3888 Arrangements for carrying or protecting transceivers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery for electronic equipment includes: a rechargeable power supply; and a battery chip, wherein: the rechargeable power supply is configured to supply power to the electronic equipment; and the battery chip is configured to detect whether the rechargeable power supply has started to supply power to the electronic equipment and, if a detection result is that the rechargeable power supply has started to supply power to the electronic equipment, transmit a customized signal to the electronic equipment through a predetermined transmitting pin.

Claims

1. A battery for electronic equipment, comprising:

a rechargeable power supply; and

a battery chip,

wherein;

the rechargeable power supply is configured to supply power to the electronic equipment; and

the battery chip is configured to detect whether the rechargeable power supply has started to supply power to the electronic equipment and, if a detection result is that the rechargeable power supply has started to supply power to the electronic equipment, transmit a customized signal to the electronic equipment through a predetermined transmitting pin.

2. The battery according to claim 1, wherein

the battery chip is further configured to stop transmitting the customized signal to the electronic equipment, when a connection between the predetermined transmitting pin and the electronic equipment is cut off.

3. The battery according to claim 1, wherein the battery chip comprises:

an oscillation circuit configured to generate a sine wave signal, after the rechargeable power supply starts to supply power to the electronic equipment;

a reference voltage generating circuit configured to generate a predetermined reference voltage; and

a comparator having first and second input terminals connected respectively to the oscillation circuit and the reference voltage generating circuit, and an output terminal connected to the predetermined transmitting pin, the comparator being configured to generate the customized signal based on comparing the sine wave signal and the predetermined reference voltage.

4. A method for use in a battery for electronic equipment, comprising:

detecting whether the battery has started to supply power to the electronic equipment; and

if a detection result is that the battery has started to supply power to the electronic equipment, transmitting a customized signal to the electronic equipment through a predetermined transmitting pin of the battery.

5. The method according to claim 4, further comprising:

when a connection between the predetermined transmitting pin and the electronic equipment is cut off, stopping transmitting the customized signal to the electronic equipment.

6. The method according to claim 4, wherein the transmitting of the customized signal comprises:

generating a sine wave signal;

generating a predetermined reference voltage;

comparing the sine wave signal and the predetermined reference voltage, to generate the customized signal; and

transmitting the customized signal to the electronic equipment through the predetermined transmitting pin of the battery.

7. A method for battery protection for use in electronic equipment, comprising:

receiving a customized signal transmitted from a battery through a predetermined receiving pin;

recognizing whether the customized signal is correct; and

if the customized signal is incorrect, controlling the electronic equipment to cut off power supplied by the battery.

8. The method according to claim 7, further comprising:

detecting whether the customized signal transmitted from the battery is received within a predetermined time period, wherein the predetermined time period is a time period after the electronic equipment has finished boot initialization;

if no customized signal from the battery is received within the predetermined time period, controlling the electronic equipment to cut off the power supplied by the battery; and

if the customized signal transmitted from the battery is received in the predetermined time period, recognizing whether the customized signal is correct.

9. The method according to claim 7, further comprising:

if the customized signal is correct, permitting the power to continue to be supplied from the battery, and cutting off a connection between the predetermined receiving pin and a predetermined transmitting pin of the battery.

10. Electronic equipment, comprising:

a processor; and

a memory for storing instructions executable by the processor,

wherein the processor is configured to;

receive a customized signal transmitted from a battery through a predetermined receiving pin;

recognize whether the customized signal is correct; and

if the customized signal is incorrect, control the electronic equipment to cut off power supplied by the battery.

11. The electronic equipment according to claim 10, wherein the processor is further configured to:

detect whether the customized signal transmitted from the battery is received within a predetermined time period, wherein the predetermined time period is a time period after the electronic equipment has finished boot initialization;

if no customized signal from the battery is received in the predetermined time period, control the electronic equipment to cut off the power supplied by the battery; and

if the customized signal transmitted from the battery is received in the predetermined time period, recognize whether the customized signal is correct.

12. The electronic equipment according to claim 10, wherein the processor is further configured to:

if the customized signal is correct, permit the power to continue to be supplied from the battery and cut off a connection between the predetermined receiving pin and a predetermined transmitting pin of the battery.

13. The electronic equipment according to claim 10, being a mobile phone.

14. A non-transitory storage medium having stored therein instructions that, when executed by a processor of electronic equipment, cause the electronic equipment to perform a method for battery protection, the method comprising:

receiving a customized signal transmitted from a battery through a predetermined receiving pin;

recognizing whether the customized signal is correct; and

if the customized signal is incorrect, controlling the electronic equipment to cut off power supplied by the battery.