DAISY-CHAIN COMMUNICATION BUS AND PROTOCOL
First Claim
1. An apparatus, comprising:
- a first connection node and a second connection node, each of the first and second connection nodes configured to communicate cell-status data along one of two directions in a bi-directional data path, the cell-status data characterizing at least one of a plurality of cells; and
a communication circuit connected to each of the first and second connection nodes and includingdirectional drive circuitry configured to communicate the cell-status data over the bi-directional data path, by communicating the cell-status data via the first connection node to first-side circuitry in the one direction of the bi-directional data path and, in response to an indication that the bi-directional data path is faulty, by communicating via the second connection node to second-side circuitry along the other direction of the bi-directional data path, anda communication-protocol circuit configured to control the directional drive circuitry.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus is provided that includes first and second connection nodes and a communication circuit. The communication circuit is configured to communicate cell-status data of a cell over a bidirectional data path connected to the connection nodes. The communication circuit includes directional drive circuitry configured to communicate the cell-status data over the bi-directional data path by communicating the cell-status data via the first connection node to first-side circuitry in the one direction of the bi-directional data path and, in response to an indication that the bi-directional data path is faulty, by communicating via the second connection node to second-side circuitry along the other direction of the bi-directional data path. The communication circuit also includes a communication-protocol circuit configured to control the directional drive circuitry. The apparatus may be connected in-series with other like apparatuses in the bi-directional data path.
15 Citations
20 Claims
-
1. An apparatus, comprising:
-
a first connection node and a second connection node, each of the first and second connection nodes configured to communicate cell-status data along one of two directions in a bi-directional data path, the cell-status data characterizing at least one of a plurality of cells; and a communication circuit connected to each of the first and second connection nodes and including directional drive circuitry configured to communicate the cell-status data over the bi-directional data path, by communicating the cell-status data via the first connection node to first-side circuitry in the one direction of the bi-directional data path and, in response to an indication that the bi-directional data path is faulty, by communicating via the second connection node to second-side circuitry along the other direction of the bi-directional data path, and a communication-protocol circuit configured to control the directional drive circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An apparatus comprising:
-
a plurality of battery sections, each including; a battery cell; a first connection node and a second connection node, the plurality of battery sections connected to form a daisy-chain bus having a first end, a second end, and the plurality of battery sections connected in series via the first and second connection nodes between the first and second ends; and a communication circuit connected to the battery cell and configured to communicate cell-status data characterizing the battery cell over the daisy-chain bus, by communicating the cell-status data via the first connection node, and in response to an indication that the daisy-chain bus is faulty, by communicating the cell-status data via the second connection node; a battery manager circuit configured to control the plurality of battery sections based on the cell-status data characterizing cells of the plurality of sections; and a communication interface circuit coupled to the battery manager circuit and the first and second ends of the daisy-chain bus, and configured and arranged to communicate data between the battery manager circuit and the communication circuits of the plurality of sections via the daisy-chain bus. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
-
20. An apparatus comprising:
-
a manager circuit; and a plurality of sections, each comprising a respective cell and a respective communication circuit connected to the cell and configured to communicate cell-status data characterizing the cell in a first direction over a bi-directional daisy-chain bus to the manager circuit and, in response to an indication that the bi-directional daisy-chain bus is faulty, by communicating in a second direction over the bi-directional daisy-chain bus to the manager circuit.
-
Specification