Charging means and apparatus for secondary battery

• US 9,692,244 B2
• Filed: 09/08/2015
• Issued: 06/27/2017
• Est. Priority Date: 09/08/2015
• Status: Active Grant

• Current Assignee: Yung J.U. Lee
• Original Assignee: Yung J.U. Lee
• Inventors: Lee, Yung Ju
• Primary Examiner(s): NGUYEN, NHA T
• Application Number:
  US14/847,548
• Publication Number:
  US 20170070072A1
• Time in Patent Office: 658 Days
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0025 Sequential battery discharge in systems with a plurality of batteries
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A charging means and apparatus which can quickly charge the secondary battery, the apparatus includes a plurality of power supply battery packs, each power supply battery pack corresponds to a charge-discharge circuit, and a microcontroller. The microcontroller sequentially and rotationally selects one of the pluralities of power supply battery packs to charge the secondary battery, and the plurality of power supply battery packs will be recharged after the discharging. After the discharging of the last one of the plurality of power supply battery packs is completed, the power supply battery pack which discharges firstly has done the recharging process and ready to discharge a again, and thus making sure at least one power supply battery pack is in fully charged condition, which is ready to discharge anytime.

Claims

1. A charging apparatus for a secondary battery, comprising:

a plurality of power supply battery packs, each being defined a charging and a discharging sequence, and discharging in rotation to supply power to the secondary battery;

a plurality of charge-discharge circuits, each corresponding to one of the plurality of power supply battery packs for charging a corresponding power supply battery pack by an external power supply, and controlling the corresponding power supply battery pack to discharge;

a microcontroller electrically connected to each charge-discharge circuit to control charging and discharging of each power supply battery pack corresponding to each charge-discharge circuit,

wherein the microcontroller sequentially selects one of the power supply battery packs to discharge and be recharged after the discharging;

when a last power supply battery unit is recharged after discharging, the power supply battery pack which discharges firstly has been fully recharged to wait for discharging;

wherein each of the plurality of charge-discharge circuits includes an analog detection and control circuit, a charging switch, a discharging switch, and a resistor;

the analog detection and control circuit detects a power level of each of the plurality of power supply battery packs for the microcontroller, and the plurality of power supply battery packs discharge through the discharging switch and are recharged through the charging switch;

wherein the microcontroller is connected to an input-output module of a host computer, and the analog detection and control circuit is used by the host computer to monitor conditions of the power supply battery packs; and

a protection circuit provided between each power supply battery pack and the microcontroller, wherein the microcontroller is used to measure an amount of charging and discharging by monitoring terminals of the resistor, and also used to generate a control signal to initial an appropriate safety protection response according to a battery condition of the power supply battery pack;

when the microcontroller detects abnormal or unsafe condition, an non-reusable fuse is triggered so as to stop using the power supply battery pack.

2. The charging apparatus for a secondary battery according to claim 1, wherein:

a quantity of the plurality of power supply battery packs =(charging time of each power supply battery pack/discharging time of each power supply battery pack) +1,decimals are added or subtracted.

3. The charging apparatus for a secondary battery according to claim 1, wherein an electricity potential of the power supply battery packs are higher than that of the secondary battery.

4. The charging apparatus for a secondary battery according to claim 1, wherein the external power supply is commercial electricity power.

5. The charging apparatus for a secondary battery according to claim 1, wherein the charging switch and the discharging switch are selected from field-effect transistor, silicon controlled rectifier, and impulse circuit.