IP Library Granted Patent US 10,680,450
Granted Patent B2
US 10,680,450 · App. 14/874,950 · Granted Jun 9, 2020

Devices and methods to discharge battery

Inventors: Bouziane Yebka (Apex, NC); Jeremy Robert Carlson (Cary, NC); Tin-Lup Wong (Chapel Hill, NC); Philip John Jakes (Durham, NC)
Assignee: Lenovo (Singapore) Pte. Ltd.
H02J7/0029H02J7/0031
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Quick Facts
Patent No.
US 10,680,450
App. No.
14/874,950
Granted
Jun 9, 2020
Kind
B2
Abstract

Battery malfunction is limited by accelerating battery discharge once battery voltage reaches a low voltage threshold. This can be done programmatically and/or using a hardware arrangement that shorts the battery to ground when the low voltage threshold is reached.

Claims (27)

1. A battery, comprising:

at least one battery cell; and

circuitry that shorts the battery to ground responsive to voltage of at least one cell in the battery reaching a low voltage threshold, the circuitry shorting the battery to ground based on actuation of at least one element to melt material within the battery onto at least a first hardware component to establish an electrical connection between the first hardware component and a second hardware component to establish a path for current to travel to complete a path to ground, the first hardware component being different from the second hardware component, the first and second hardware components having a break therebetween prior to the melting of the material onto at least the first hardware component.

2. The battery of claim 1 , wherein the circuitry is implemented in hardware, wherein the circuitry is first circuitry, wherein the low voltage threshold is a first low voltage threshold, and wherein the battery comprises second circuitry that stops the battery from supplying power to system components of a device responsive to voltage of at least one cell in the battery reaching a second low voltage threshold, the second low voltage threshold being of a greater voltage amount than the first low voltage threshold.

3. The battery of claim 2 , wherein the at least one element comprises a resistor that heats the material.

4. The battery of claim 3 , wherein the resistor contacts the material to heat the material.

5. The battery of claim 3 , wherein the circuitry comprises a field effect transistor (FET) that opens so that current is provided to the resistor to heat the material.

6. The battery of claim 1 , wherein the circuitry is arranged so that based on the material melting a fuse is blown.

7. The battery of claim 1 , wherein the material comprises solder.

8. A method, comprising:

providing a battery having at least one battery cell; and

providing circuitry that shorts the battery to ground responsive to voltage of at least one cell in the battery reaching a low voltage threshold, the circuitry shorting the battery to ground based on actuation of at least one element to melt material within the battery to establish an electrical connection with a pad to complete a path to ground for current to travel to ground, the path to ground not being completed prior to the melting of the material.

9. The method of claim 8 , wherein the circuitry is implemented in hardware, wherein the circuitry is first circuitry, wherein the low voltage threshold is a first low voltage threshold, and wherein the battery comprises second circuitry that stops the battery from supplying power to system components of a device responsive to voltage of at least one cell in the battery reaching a second low voltage threshold, the second low voltage threshold being of a greater voltage amount than the first low voltage threshold.

10. The method of claim 8 , wherein the at least one element comprises a resistor that heats the material, and wherein the at least one element is provided as part of the circuitry.

11. The method of claim 10 , wherein the resistor contacts the material to heat the material.

12. The method of claim 10 , wherein the circuitry comprises a field effect transistor (FET) that opens so that current is provided to the resistor to heat the material.

13. The method of claim 9 , wherein the circuitry as provided is arranged so that based on the material melting a fuse is blown.

14. The method of claim 8 , wherein the material comprises solder.

15. A device, comprising:

system components, the system components comprising at least one processor, at least one computer-readable storage medium accessible to the at least one processor, and a display accessible to the at least one processor;

a battery comprising at least one battery cell; and

circuitry that shorts the battery to ground responsive to voltage of at least one battery cell in the battery reaching a low voltage threshold, the circuitry shorting the battery to ground based on actuation of at least one element to melt material within the battery from a first hardware component onto a second hardware component to complete a path between the first and second hardware components to ground.

16. The device of claim 15 , wherein the at least one element comprises a resistor that heats the material.

17. The device of claim 16 , wherein the resistor contacts the material to heat the material.

18. The device of claim 16 , wherein the circuitry comprises a field effect transistor (FET) that opens so that current is provided to the resistor to heat the material.

19. The device of claim 15 , wherein the circuitry is arranged so that based on the material melting a fuse is blown.

20. The device of claim 15 , wherein the material comprises solder.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2025
From: LENOVO PC INTERNATIONAL LIMITED
To: LENOVO SWITZERLAND INTERNATIONAL GMBH
Reel/Frame 069870/0670 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2021
From: LENOVO (SINGAPORE) PTE LTD
To: LENOVO PC INTERNATIONAL LTD
Reel/Frame 055110/0378 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 5, 2015
From: YEBKA, BOUZIANE; CARLSON, JEREMY ROBERT; WONG, TIN-LUP; JAKES, PHILIP JOHN
To: LENOVO (SINGAPORE) PTE. LTD.
Reel/Frame 036728/0196 →