Battery management apparatus

Patent metadata

Field	Value
Publication number	US-12230989-B2
Application number	US-202017640188-A
Country	US
Kind code	B2
Filing date	Dec 24, 2020
Priority date	Jan 3, 2020
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

Disclosed is a battery management apparatus capable of effectively reducing the current consumption of a component for waking up a microcontroller unit. The battery management apparatus includes a wake-up unit, a first power supply path, a first regulator, a first switching element, a feedback module, and a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving a wake-up signal from the wake-up unit and connected to the feedback module to turn off the first switching element.

First claim

What is claimed is:

1. A battery management apparatus for managing a battery pack including a battery cell, comprising:
a wake-up unit configured to generate and send a wake-up signal;
a first power supply path between the battery cell and the wake-up unit, the first power supply path being configured to supply a first operating power from the battery cell to the wake-up unit;
a first regulator on the first power supply path, the first regulator being configured to adjust a voltage magnitude of the first operating power supplied from the battery cell to a voltage magnitude available by the wake-up unit;
a first switching element on the first power supply path, the first switching element being configured to turn on or off the flow of the first operating power on the first power supply path;
a feedback module configured to supply an on/off signal from the first regulator to the first switching element; and
a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving the wake-up signal from the wake-up unit, the microcontroller unit being connected to the feedback module to turn off the first switching element.

2. The battery management apparatus according to claim 1 , wherein the wake-up unit comprises:
a real time clock; and
a controller area network (CAN) transceiver.

3. The battery management apparatus according to claim 1 , wherein:
the first switching element is implemented using a field-effect transistor (FET); and
the feedback module is configured to supply an on/off signal to a gate terminal of the first switching element.

4. The battery management apparatus according to claim 1 , wherein the feedback module comprises:
a feedback path configured such that an operation signal is supplied from the first regulator to the first switching element; and
a feedback switching element provided on the feedback path to turn on or off the feedback path.

5. The battery management apparatus according to claim 4 , wherein the microcontroller unit is further configured to supply a control signal so that the feedback switching element is turned off.

6. The battery management apparatus according to claim 5 , wherein the feedback module further comprises an OR gate element located on the feedback path, the OR gate element being configured to:
receive;
the operation signal supplied from the first regulator; and
the control signal supplied from the microcontroller unit; and

provide an output signal to the first switching element.

7. The battery management apparatus according to claim 1 , further comprising:
a second power supply path between the battery cell and the microcontroller unit, the second power supply path being configured to supply a second operating power from the battery cell to the microcontroller unit;
a second regulator on the second power supply path, the second regulator being configured to adjust a voltage magnitude of the second operating power supplied from the battery cell to a voltage magnitude available by the microcontroller unit; and
a second switching element on the second power supply path, the second switching element being configured to turn on or off the flow of the second operating power on the second power supply path,
wherein the wake-up unit is further configured to generate and send the wake-up signal to the second switching element to turn on the second switching element.

8. The battery management apparatus according to claim 7 , wherein the microcontroller unit is further configured to turn off the first switching element and the second switching element.

9. The battery management apparatus according to claim 8 , wherein the microcontroller unit is further configured to turn off the first switching element and the second switching element in order when a state of charge (SOC) of the battery cell is lower than a reference value.

10. A battery pack, comprising the battery management apparatus according to claim 1 .

11. An electronic device, comprising the battery management apparatus according to claim 1 .

Assignees

• Lg Energy Solution Ltd

Inventors

• Lee Won-Hoe
• Kim Jeong-Wook
• Kim Jun-Suk
• Noh Seung-Jin
• An Hyo-Seong
• Yoon Seog-Jin

Classifications

• H02J7/933

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J7/82

  Control of state of charge [SOC] · CPC title

• H02J7/855 Primary

  with circuits adapted for supplying loads from the battery · CPC title

• H02J7/977

  of the battery · CPC title

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title