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Battery system

A battery system and battery unit technology, applied in battery circuit devices, battery/battery traction, arrangement of multiple synchronous batteries, etc., can solve problems such as hindering the power supply of electric loads, and achieve the effect of a simple structure

Inactive Publication Date: 2013-07-31
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the above-mentioned physical connection is loose, the power supply to the electric load is hindered, and when the looseness further develops and the wiring finally comes off from the battery unit, the power supply to the electric load is cut off.
This means that, for example, in the case of an electric vehicle with a battery system, a sudden deceleration may occur and an accident may occur

Method used

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Embodiment Construction

[0021] One of the characteristics of the battery system according to the embodiment of the present invention is that the measuring unit is arranged so as to include the contact resistance between the wiring as the power supply line and the electrode terminal on the electrical path for measuring the cell voltage of the battery unit. The voltage sensor of the voltage determines the state of electrical connection between the wiring and each battery cell when the battery system is started, and performs appropriate control and processing. Hereinafter, it will describe in detail with reference to drawings.

[0022] Hereinafter, a battery system according to an embodiment of the present invention will be described with reference to the drawings. figure 1 is a diagram showing the configuration of the battery system 1 . The battery unit used in the battery system 1 can be used in any battery such as a primary battery or a secondary battery depending on the application of the battery s...

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Abstract

A battery system includes: a first battery cell; a second battery cell; a power load supplied with current from the first battery cell and the second battery cell; a connection which electrically connects a negative electrode terminal of the first battery cell and a positive electrode terminal of the second battery cell; a connection which electrically connects the first negative electrode terminal and the second positive electrode terminal; a cell balancing circuit which causes electromotive voltages of the first battery cell and the second battery cell to be substantially equal; and a controller, wherein the controller enables the current to be supplied to the power load after causing the electromotive voltages of the first battery cell and the second battery cell to be substantially equal, thereby determining looseness of the connection.

Description

technical field [0001] The present invention relates to a battery system, and more particularly, to a battery system for determining the wiring connection state between battery cells of a battery pack. [0002] this application claims priority to Japanese Patent Application No. 2010-274382 for which it applied to Japan on December 9, 2010, and uses the content here. Background technique [0003] Battery cells used in battery systems are generally used as battery packs. That is, in many cases, it is used as a battery pack in which a plurality of battery cells are connected in series or in parallel using wiring as a power supply line. The physical connection of the wires to the electrode terminals of the battery cell is performed using threads or the like. The battery pack supplies electric power to, for example, an electric load included in the battery system. [0004] However, if the above-mentioned physical connection is loose, the power supply to the electric load is hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/04G01R31/36H02J7/00H02J7/02
CPCB60L2200/32Y02T10/7061B60L2200/42Y02T10/7055B60L2200/10G01R31/362B60L3/0046B60L11/1866Y02T10/7005B60L2240/549B60L2230/24B60L11/1879B60L2230/22H02J7/0016B60L2200/26B60L2250/10B60L11/1803B60L2240/547G01R31/3658B60L2240/545Y02T90/12G01R27/02B60L2250/28B60L2250/16G01R31/04B60L2200/36B60L50/51B60L50/64B60L53/51B60L53/52B60L58/10B60L58/22G01R31/3835G01R31/396G01R31/66Y02T10/70Y02T10/7072
Inventor 高辻秀保
Owner MITSUBISHI HEAVY IND LTD