US 10,833,522 B2Granted

Battery pack with locally controlled disconnect safeguards

AssigneeAnalog Devices, Inc.

InventorsJames Camp, Thomas M. MacLeod

Life of this patent

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Abstract

Various examples are directed to integrated circuits and/or controllers for battery packs. An integrated circuit for managing at least a portion of a battery pack comprises a first cell controller. The first cell controller may comprise a first switch system, a first local controller, a first receive terminal to receive a first command from a preceding cell controller, and a first transmit terminal to send the first command to a succeeding cell controller. The first switch system may comprise two pairs of switches to couple a first battery cell to a pair of output terminals in an H-bridge configuration. The first local controller may control the first switch system to selectively connect and disconnect the first battery cell to the pair of output terminal.

Claims18

Dependent claims

An integrated circuit for managing at least a portion of a battery pack, comprising:

a first cell controller;
comprising:
a first switch system comprising two pairs of switches to couple a first battery cell to a pair of output terminals in an H-bridge configuration;
a first local controller to control the first switch system to selectively connect and disconnect the first battery cell to the pair of output terminals;
a first receive terminal to receive a first command from a preceding cell controller;
and
a first transmit terminal to send the first command to a succeeding cell controller;
and
the preceding cell controller, comprising:
a second switch system comprising two pairs of switches to couple a second battery cell to the pair of output terminals in an H-bridge configuration;
a second local controller to control the second switch system to selectively connect and disconnect the second battery cell to the pair of output terminals;
a second receive terminal to receive the first command from a second preceding cell controller;
and
a first transmit terminal in communication with the first receive terminal to send the first command to the first receive terminal.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/452,452Filed 7 Mar 2017 · division
Priority: 6 Aug 2013
Published: US 2017/0179543 A122 Jun 2017
Granted: 10 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

H01M 10/425
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: structural combination with electronic…
H01M 10/4257
Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing: smart batteries, e.g.…
H01M 10/486
Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte:…
H02J 7/56
For charge balancing, e.g. equalisation of charge between batteries: active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters

Family

Application61/862,835Us provisional application · filed 6 Aug 2013
Application14/452,311Parent of this division · filed 5 Aug 2014
US 2017/0179543 A1Pre-grant publication · published 22 Jun 2017
US 9,601,940 B2Parent of this division
US 2015/0044515 A1Published application
US 10,833,522 B2This patent

From the US filing history. Foreign family members aren’t listed.