BATTERY-MONITORING DEVICE

• US 20130088237A1
• Filed: 10/03/2012
• Published: 04/11/2013
• Est. Priority Date: 10/07/2011
• Status: Abandoned Application

• Current Assignee: Keihin Corporation (Hitachi, Ltd.)
• Original Assignee: Keihin Corporation (Hitachi, Ltd.)
• Inventors: KAMATA, Seiji, ABE, Hidefumi
• Application Number:
  US13/644,032
• Publication Number:
  US 20130088237A1
• Time in Patent Office: Days
• US Class Current: 324/434
• CPC Class Codes: G01R 31/3835 involving only voltage measurements
• CPC Class Codes: G01R 31/396 Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
• CPC Class Codes: H04Q 2209/10 using a centralized architecture
• CPC Class Codes: H04Q 2209/30 using a wired architecture
• CPC Class Codes: H04Q 2209/82 where the sensing device takes the initiative of sending data
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

The present invention provides a battery-monitoring device is provided that monitors a voltage state of each battery cell constituting a battery, including: a voltage detection circuit; a management circuit which manages voltage detection data of each battery cell using the voltage detection circuit; a communication mode converter which is connected to the voltage detection circuit through a first communication line for communicating using a clock synchronous communication mode, and is connected to the management circuit through a second communication line for communicating using a clock asynchronous communication mode; and an insulating element which is interposed in the second communication line, wherein the communication mode converter transmits the voltage detection data, received from each of the voltage detection circuits through the first communication line, through the second communication line to the management circuit.

Claims

1. A battery-monitoring device that monitors a voltage state of each battery cell constituting a battery, comprising:

a voltage detection circuit, provided for each block obtained by dividing the battery into multiple parts, which detects a voltage of the battery cell belonging to each block;

a management circuit, belonging to a power system having a voltage lower than that of a power system of the voltage detection circuit, which manages voltage detection data of each battery cell using the voltage detection circuit;

a communication mode converter, belonging to the same power system as that of the voltage detection circuit, which is connected to the voltage detection circuit through a first communication line for communicating using a clock synchronous communication mode, and is connected to the management circuit through a second communication line for communicating using a clock asynchronous communication mode; and

an insulating element which is interposed in the second communication line,

wherein the communication mode converter transmits the voltage detection data, received from each of the voltage detection circuits through the first communication line, through the second communication line to the management circuit.

2. The battery-monitoring device according to claim 1, wherein the voltage detection circuits are connected to each other in a daisy-chain manner, and

the communication mode converter is connected to one of the voltage detection circuits through the first communication line.

3. The battery-monitoring device according to claim 2, wherein the communication mode converter includes a memory for data storage.

4. The battery-monitoring device according to claim 3, wherein the clock synchronous communication mode is an SPI, and the clock asynchronous communication mode is a UART.

5. The battery-monitoring device according to claim 1, wherein the communication mode converter includes a memory for data storage.

6. The battery-monitoring device according to claim 1, wherein the clock synchronous communication mode is an SPI, and the clock asynchronous communication mode is a UART.

7. The battery-monitoring device according to claim 2, wherein the clock synchronous communication mode is an SPI, and the clock asynchronous communication mode is a UART.