Insulated communication system

Patent metadata

Field	Value
Publication number	US-12255753-B2
Application number	US-202318187123-A
Country	US
Kind code	B2
Filing date	Mar 21, 2023
Priority date	Mar 23, 2022
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

An insulated communication system includes a communication controller that sets communication data to a communication symbol through a numeral system and executes insulated communication through an insulator by adopting the communication symbol. The numeral system includes multiple states having a positive state, a negative state and a zero state. The positive state is represented by at least one positive integer, and the negative state is represented by at least one negative integer. The zero state is represented by zero being a level without generating current consumption. An absolute value of the at least one positive integer and an absolute value of the at least one negative integer are identical to each other. The communication controller sets an initial section of the communication data in the communication symbol to the positive state or the negative state, and sets a following section of the communication data to one of the multiple states.

First claim

What is claimed is:

1. An insulated communication system comprising:
a communication controller configured to
set communication data to a communication symbol through a numeral system being a ternary system or higher, and
execute insulated communication through an insulator by adopting the communication symbol, wherein

the numeral system includes a plurality of states having
a positive state represented by at least one positive integer,
a negative state represented by at least one negative integer, and
a zero state represented by zero, the zero state having a level without generating current consumption in the insulated communication and being between the positive state and the negative state,

an absolute value of the at least one positive integer and an absolute value of the at least one negative integer are identical to each other, and
the communication controller is further configured to:
set an initial section of the communication data in the communication symbol to the positive state or the negative state; and
set a following section of the communication data following the initial section of the communication data to one of the plurality of states,

further comprising:
a storage configured to store a length of the communication symbol communicated in a single modulation,
wherein the communication controller is further configured to receive the communication symbol during a period from a time at which the initial section of the communication data in the communication symbol is received by the communication controller to a time at which the communication controller counts a count number preliminarily set based on the length of the communication symbol stored in the storage.

2. The insulated communication system according to claim 1 , wherein the communication controller is further configured to execute communication by encoding initial two bits of the communication data to the communication symbol through Manchester code.

3. An insulated communication system comprising:
a communication controller configured to
set communication data to a communication symbol through a numeral system being a ternary system or higher, and
execute insulated communication through an insulator by adopting the communication symbol, wherein

the numeral system includes a plurality of states having
a positive state represented by at least one positive integer,
a negative state represented by at least one negative integer, and
a zero state represented by zero, the zero state having a level without generating current consumption in the insulated communication and being between the positive state and the negative state,

an absolute value of the at least one positive integer and an absolute value of the at least one negative integer are identical to each other, and
the communication controller is further configured to:
set an initial section of the communication data in the communication symbol to the positive state or the negative state; and
set a following section of the communication data following the initial section of the communication data to one of the plurality of states, wherein

the insulated communication system is configured to be adapted to a battery monitoring system including a battery monitoring ECU and a plurality of battery monitoring devices,
each of the plurality of battery monitoring devices is configured to monitor an assembled battery in which a plurality of battery cells are connected, by acquiring a voltage across one or more of the plurality of battery cells, and
each of the battery monitoring ECU and the plurality of battery monitoring devices includes the communication controller, and
the communication controller in the battery monitoring ECU and the communication controller in each of the plurality of battery monitoring devices are further configured to execute the insulated communication with a differential signal through the insulator,

further comprising:
a storage configured to store a length of the communication symbol communicated in a single modulation,
wherein the communication controller included in the battery monitoring ECU is further configured to change the length of the communication symbol, based on a condition that the communication controller included in the battery monitoring ECU transmits a command value and receives an acknowledge response from the communication controller included in each of the plurality of battery monitoring devices.

4. An insulated communication system comprising:
a communication controller configured to
set communication data to a communication symbol through a numeral system being a ternary system or higher, and
execute insulated communication through an insulator by adopting the communication symbol, wherein

the numeral system includes a plurality of states having
a positive state represented by at least one positive integer,
a negative state represented by at least one negative integer, and
a zero state represented by zero, the zero state having a level without generating current consumption in the insulated communication and being between the positive state and the negative state,

an absolute value of the at least one positive integer and an absolute value of the at least one negative integer are identical to each other, and
the communication controller is further configured to:
set an initial section of the communication data in the communication symbol to the positive state or the negative state;
set a following section of the communication data following the initial section of the communication data to one of the plurality of states; and
execute communication by encoding initial two bits of the communication data to the communication symbol through Manchester code.

5. The insulated communication system according to claim 4 , wherein
the insulated communication system is configured to be adapted to a battery monitoring system including a battery monitoring ECU and a plurality of battery monitoring devices,
each of the plurality of battery monitoring devices is configured to monitor an assembled battery in which a plurality of battery cells are connected, by acquiring a voltage across one or more of the plurality of battery cells, and
each of the battery monitoring ECU and the plurality of battery monitoring devices includes the communication controller, and
the communication controller in the battery monitoring ECU and the communication controller in each of the plurality of battery monitoring devices are further configured to execute the insulated communication with a differential signal through the insulator.

6. The insulated communication system according to claim 4 , wherein the communication controller is configured to set the communication data to the communication symbol communicated in a single modulation, such that a sum of the plurality of states in the communication symbol is zero.

7. The insulated communication system according to claim 4 , wherein
the at least one positive integer includes a plurality of positive integers,
the at least one negative integer includes a plurality of negative integers, and
the communication controller is further configured to set the communication data to the communication symbol through the plurality of positive integers and the plurality of negative integers, such that a sum of the plurality of positive integers and the plurality of negative integers in the communication symbol is zero.

8. The insulated communication system according to claim 4 , further comprising:
a clock generator configured to generate a clock signal, wherein
the initial two bits of the communication data are detected based on rising edges or falling edges of a signal modulated by the Manchester code, and
the c

Assignees

• Denso Corp
• Toyota Motor Co Ltd
• MIRISE Technologies Corporation
• Imrise Tech Corporation

Inventors

• Furuta Yoshikazu
• Otsuka Shigeki
• Ito Takasuke
• Na Hyoungjun
• Nezuka Tomohiro

Classifications

• G01R31/396

  Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery · CPC title

• H04L2012/40273

  the transportation system being a vehicle · CPC title

• H04L2012/40215

  Controller Area Network CAN · CPC title

• G01R31/3835

  involving only voltage measurements · CPC title

• H03M5/12

  Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code · CPC title