Voltage monitoring system

A voltage monitoring and battery monitoring technology, applied in the direction of measuring current/voltage, circuit, measuring electricity, etc., can solve the problem of unbearable voltage of battery cells

Inactive Publication Date: 2017-03-15
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] A semiconductor (monitor IC), such as an integrated circuit used in a voltage monitoring system, withstands the voltage of several battery cells connected in series, each with a voltage of 3V to 4V; however, the semiconductor cannot withstand dozens of Voltage of battery cells connected in series

Method used

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Embodiment Construction

[0015] A voltage monitoring system 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings. like figure 1 As shown, the voltage monitoring system 100 according to the present invention monitors the voltage (cell voltage) of each of the battery cells 10a to 10c, 40a to 40c of the battery 80, in which the first battery pack 11 and the second battery pack 41 are connected in series with each other. The first battery pack 11 includes a plurality of battery cells 10a to 10c connected in series. The second battery pack 41 includes a plurality of battery cells 40a to 40c connected in series. The voltage monitoring system 100 includes a first monitoring IC 20 , a first connection wire group 23 , a first connector 30 , a second monitoring IC 50 , a second connection wire group 53 and a second connector 60 . The first monitoring IC 20 includes a plurality of input terminals 21a to 21d. The first connection wire grou...

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Abstract

A voltage monitoring system includes a first connection line group (23) connected to input terminals (21a-21d) of a first monitoring IC (20), a first connector (30) configured to connect or disconnect connection lines of the first connection line group (23) to or from connection points (12a-12d) each arranged on a side of a positive electrode or negative electrode of any one of battery cells (10a-10d) of a first battery group (11), a second connection line group (53) connected to input terminals (52a-52d) of a second monitoring IC (50), and a second connector (60) configured to connect or disconnect connection lines of the second connection line group (53) to or from connection points (42a-42d) arranged on a side of a positive electrode or negative electrode of any one of battery cells (40a-40c) of a second battery group (41). The first monitoring IC (20) is electrically isolated from the second monitoring IC (50). The first connection line group (23) is electrically isolated from the second connection line group (53).

Description

technical field [0001] The present invention relates to the structure of a voltage monitoring system. Background technique [0002] A battery is installed as a battery used in electric vehicles such as electric vehicles and hybrid vehicles in which dozens or more of battery cells (for example, lithium ion batteries) with an output voltage of 3V to 4V are connected in series, To provide an output voltage of 200V to 400V. For such a battery in which a large number of battery cells are connected to each other in series, it is necessary to reduce the voltage difference and the SOC difference between the battery cells, and therefore, a battery monitoring system that detects the voltage of each battery cell is used. [0003] A semiconductor (monitor IC), such as an integrated circuit used in a voltage monitoring system, withstands the voltage of several battery cells connected in series, each with a voltage of 3V to 4V; however, the semiconductor cannot withstand dozens of Volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48
CPCH01M10/482B60L3/0046B60L2240/547B60L58/10G01R31/3835G01R31/396Y02E60/10Y02T10/70G01R19/16542G01R31/364B60L58/12
Inventor 海田启司村上晃庸川岛裕宣
Owner TOYOTA JIDOSHA KK
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