Battery pack, method for charging/discharging same, and power consumption device

A discharge device and battery pack technology, which is applied in the direction of secondary battery charging/discharging, battery/fuel cell control device, battery circuit device, etc., can solve problems such as uselessness and inability to realize effective charging/discharging of power storage devices, and achieve battery Balanced Optimal Effects

Active Publication Date: 2013-06-19
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a problem that until the disconnection of the secondary battery occurs, the means for compensating the voltage in proportion to the disconnected battery is useless without any contribution to the power storage device, and cannot be realized Efficient charging / discharging of the entire power storage device

Method used

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  • Battery pack, method for charging/discharging same, and power consumption device
  • Battery pack, method for charging/discharging same, and power consumption device
  • Battery pack, method for charging/discharging same, and power consumption device

Examples

Experimental program
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no. 1 approach

[0074] The first embodiment relates to a battery pack and a method for charging / discharging the battery pack according to the first to third aspects of the present technology. figure 1 (A) shows a conceptual diagram of the battery pack of the first embodiment, and figure 1 (B) shows a configuration diagram of the battery pack of the first embodiment.

[0075] The battery pack of the first embodiment includes a battery pack 10 in which a plurality of secondary batteries 12 (in the example shown in the drawing, 21 secondary batteries) connected in parallel and an auxiliary charging / discharging device 13 12 11 、12 12 、12 13 、12 21 、12 22 、12 23 、12 31 、12 32 、12 33 、12 41 、12 42 、12 43 、12 51 、12 52 、12 53 、12 61 、12 62 、12 63 、12 71 、12 72 and 12 73 ) composed of multiple secondary battery parallel modules 11 (in the example shown in the figure, 7 secondary battery parallel modules 11 1 、11 2 、11 3 、11 4 、11 5 、11 6 and 11 7 ) connected in series. ...

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Abstract

This charging / discharging method is of a battery pack having an auxiliary charging / discharging device and a battery assembly wherein a plurality of secondary battery cell parallel modules comprising a plurality of secondary battery cells connected in parallel are connected in series. During charging / discharging, when there is no abnormality in the secondary battery cells, the auxiliary charging / discharging device is connected in parallel with one of the secondary battery cell parallel modules. During charging / discharging, when there is an abnormality in one of the secondary battery cells, the connection to the secondary battery cell at which the abnormality arose is removed in the secondary battery cell parallel module containing the secondary battery cell at which the abnormality arose, and the auxiliary charging / discharging device is connected in parallel to the secondary battery cell parallel module containing the secondary battery cell at which the abnormality arose.

Description

technical field [0001] The present disclosure relates to a battery pack, a method of charging / discharging the battery pack, and a power consumption device. Background technique [0002] Battery packs have been used in various portable devices such as mobile phones, digital cameras, handheld game consoles, laptop personal computers, and power tools. Therefore, at present, battery packs are being used in fields requiring higher output and higher capacity, such as pedelec bicycles and electric cars and also household power storage devices, but not limited thereto. [0003] As a secondary battery incorporated into a battery pack, one of the most commonly used batteries at present is a lithium ion secondary battery. Lithium ion secondary batteries are very widely used due to various characteristics, such as that they can be repeatedly used by charging, that they have high voltage output, that they have high energy density, that they have low self-discharge, and that they have lo...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02J7/00H01M2/10H01M10/44H02J7/02
CPCH02J7/0019H02J7/0024H01M10/441B60L2200/26B60L58/19Y02T10/70Y02E60/10H02J7/04H02J7/0014H02J7/007182
Inventor小泽淳史中村和夫堀田慎丸谷健太郎上坂进一
OwnerMURATA MFG CO LTD