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Battery control apparatus, battery system, electrically driven vehicle, charge control apparatus, charger, moving body, power supply system, power storage apparatus, and power supply apparatus

A control device and storage device technology, applied in battery/fuel cell control devices, electric vehicle charging technology, secondary battery charging/discharging, etc., can solve the problem of not being able to identify the voltage of the battery unit, and achieve the goal of suppressing complexity and cost Effects of increasing, reducing, and suppressing cost increases

Inactive Publication Date: 2012-10-24
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, since the battery pack system is not equipped with a device for detecting the voltage of each battery cell, when such a battery pack system is used in an electric vehicle, the user of the electric vehicle and various devices cannot identify each battery cell. voltage

Method used

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  • Battery control apparatus, battery system, electrically driven vehicle, charge control apparatus, charger, moving body, power supply system, power storage apparatus, and power supply apparatus
  • Battery control apparatus, battery system, electrically driven vehicle, charge control apparatus, charger, moving body, power supply system, power storage apparatus, and power supply apparatus
  • Battery control apparatus, battery system, electrically driven vehicle, charge control apparatus, charger, moving body, power supply system, power storage apparatus, and power supply apparatus

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no. 1 approach

[0085] Hereinafter, a battery control device, a battery system, an electric vehicle, a charge control device, and a charger according to a first embodiment will be described with reference to the drawings. In addition, the battery control device according to the present embodiment is used as a part of the constituent elements of a battery system mounted on an electric vehicle using electric power as a driving source, and the battery control device monitors the state of charge of a plurality of battery cells connected in series. Calculation. Electric vehicles include battery electric vehicles, plug-in hybrid electric vehicles, and the like. In this embodiment, the electric vehicle is a battery electric vehicle.

[0086] In the following description, the charge amount accumulated in the battery cell in a fully charged state is referred to as a full charge capacity. In addition, the charge amount stored in the storage battery cell in an arbitrary state is referred to as a remai...

Embodiment approach

no. 3 approach

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Abstract

A battery control apparatus is connected to a plurality of battery cells. The battery control apparatus comprises a voltage calculation unit, a communication unit, and a voltage update unit. The voltage calculation unit calculates the voltages of each of the battery cells on the basis of currents flowing into the plurality of battery cells. When the battery control apparatus is connected to a charge control apparatus, the communication unit receives, from the charge control apparatus, information pertaining to the voltages of each of the battery cells detected by the voltage detection unit of the charge control apparatus. The voltage update unit updates the voltages calculated by the voltage calculation unit on the basis of voltage information received by the communication unit.

Description

technical field [0001] The present invention relates to a battery control device, a battery system including the battery control device, an electric vehicle, a mobile body, a power supply system, a power storage device, and a power supply device, a charging control device corresponding to the battery control device, and a battery charging device provided with the charging control device. device. Background technique [0002] A battery system having a plurality of chargeable and dischargeable battery modules is used as a drive source of a mobile body such as an electric vehicle. In addition, the battery module has, for example, a configuration in which a plurality of battery cells (cells) are connected in series. [0003] In a storage battery system, there are cases where a plurality of storage battery cells vary in charge rate (SOC) or the like. The SOC of a plurality of battery cells is calculated, and in order to prevent variations in SOC, it is desirable to measure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02B60L3/00G01R31/36H01M10/44H01M10/48H02J7/00
CPCH01M10/482Y02E60/12Y02T10/7055B60L11/1866H02J7/0021Y02T10/7005Y02T90/128B60L3/0046Y02T90/14B60L11/1838B60L11/1861Y02T10/7061B60L2250/16G01R31/3658B60L11/1816Y02T10/7044B60L11/1824B60L2230/16Y02T90/16G01R19/16542Y02T10/7088G01R31/362Y02T90/121Y02T90/163H01M10/441G01R31/396G01R31/3835B60L53/14B60L58/12B60L58/22B60L53/305B60L53/62Y02T10/70Y02T10/7072Y02T90/12Y02E60/10H02J7/0025H02J7/0048
Inventor 村尾浩也片冈信哉桐本美香
Owner SANYO ELECTRIC CO LTD
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