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Voltage monitoring circuit, and vehicle equipped with same

A voltage monitoring and circuit technology, applied in charge equalization circuits, battery circuit devices, safety/protection battery circuits, etc., can solve problems such as damage to differential amplifiers

Active Publication Date: 2014-09-03
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] If such a high voltage is applied between the input terminals of the differential amplifier constituting the voltage detection section of the voltage monitoring circuits 112 and 118, the differential amplifier may be damaged by overvoltage.

Method used

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  • Voltage monitoring circuit, and vehicle equipped with same
  • Voltage monitoring circuit, and vehicle equipped with same
  • Voltage monitoring circuit, and vehicle equipped with same

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Embodiment Construction

[0036] Hereinafter, an embodiment of the present invention will be described in relation to a vehicle to which the embodiment is applied with reference to the drawings.

[0037] figure 1 A schematic configuration of a hybrid electric vehicle (HEV) 12 equipped with a voltage monitoring circuit 10 according to an embodiment of the present invention is shown.

[0038] The HEV 12 is a motor-assisted hybrid vehicle, and includes an engine 14, an electric motor (M) 16 functioning as a motor (motor) and a generator (generator), and a transmission (T / M) 18 via a crank A shaft (not shown) is integrally connected to the engine 14 , and drive wheels (not shown) are driven by the output of the transmission 18 .

[0039] The control device 20 is connected to each component of the HEV 12 including the voltage monitoring circuit 10 , controls the HEV 12 as a whole, and controls charge and discharge of the battery module 30 .

[0040] In the battery module 30 serving as a battery pack, N ba...

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PUM

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Abstract

When charging a battery module (30) obtained by connecting a plurality of battery cells (32) in series, even if the current cut-off switch (34) provided on the battery module (30) is turned off, the switching element ( 76) Applying a voltage with positive polarity short-circuits the anti-fuse element (78 (AF4)), thereby turning off the switching element (76). Thus, the voltage monitoring circuit (10) and the voltage monitoring circuit (10) equipped with the voltage monitoring circuit ( 10) Vehicles.

Description

technical field [0001] The present invention relates to a voltage monitoring circuit and a vehicle equipped with the voltage monitoring circuit, wherein the voltage monitoring circuit monitors the voltage of each battery cell of a battery module (also referred to as a battery pack) in which charging and discharging batteries are connected in series. Among the battery cells of the plurality of secondary batteries, current cutoff switches are provided between at least one group of adjacent battery cells among the battery cells. Background technique [0002] Recently, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), or fuel cell vehicles (FCVs), which run at least with the driving force of electric motors, will be able to charge Battery cells of a plurality of discharged secondary batteries are connected in series and housed in a battery box as a battery module (battery pack). The motor is driven by the DC high voltage generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02G01R19/165G01R19/00H02H7/18H02J7/00
CPCY02T10/7055G01R19/16542H02J7/0026H02H9/045B60L2240/547B60L58/19B60L58/21B60L58/30H02J2310/48H02J7/0014Y02T10/70Y02T90/40H02J7/00308
Inventor 大贯泰道
Owner HONDA MOTOR CO LTD