Unlock instant, AI-driven research and patent intelligence for your innovation.

Battery control unit and battery system

A battery cell and battery control technology, applied in battery circuit devices, electrical components, secondary batteries, etc., can solve problems such as longer charging time

Pending Publication Date: 2021-03-30
YAZAKI CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a charging method, when battery B1 has to switch from constant current charging to constant voltage charging to reduce the charging current, batteries B2 and B3 are still in a state where the charging current does not need to be reduced, but the charging current has to be Decrease and charge in unison with battery B1
Therefore, there is a problem that the charging time becomes longer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Battery control unit and battery system
  • Battery control unit and battery system
  • Battery control unit and battery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings.

[0014] E.g, figure 1 The illustrated battery system is a device that supplies electric power obtained by repeatedly using a deteriorated battery.

[0015] Such as figure 1 As shown, the battery system 1 includes a plurality of batteries 2 a to 2 c and a battery control unit 3 . In this embodiment, an example in which three batteries 2a to 2c are connected in series is described for simplicity of description, however, the present invention is not limited thereto. The number of batteries 2a to 2c may be plural, and may be two or four or more. Each of the plurality of batteries 2a to 2c is a chargeable and dischargeable storage battery, and may be constituted by one unit cell, or may be constituted by a plurality of unit cells.

[0016] The battery control unit 3 includes a plurality of switching units 4 a to 4 c , a plurality of voltage...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A battery control unit includes a plurality of battery units, a charger configured to charge a battery, a controller, and a charging controller. Each of the plurality of battery units includes a switching unit. The switching unit is configured to switch between a connected state where the battery configured to be located in the same battery unit as that of the switching unit is connected in serieswith the battery configured to be located in an adjacent battery unit, and a non-connected state where the battery in the same battery unit as that of the switching unit is disconnected from the series connection with the battery in the adjacent battery unit.

Description

technical field [0001] The invention relates to a battery control unit and a battery system. Background technique [0002] There is a battery system configured by connecting a plurality of batteries in series. Deterioration of a plurality of batteries is diversified due to, for example, variations in manufacturing or changes in operating environments. For example, a battery near a heat source degrades rapidly, while a battery far from the heat source degrades slowly. [0003] Therefore, a battery that has deteriorated during charging and discharging first reaches the charge termination voltage. In this case, charging must be stopped even when there is remaining capacity in other batteries, and the battery capacity cannot be exhausted. Therefore, a system has been proposed in which batteries that have reached the end-of-charge voltage are bypassed, and charging is disconnected, and charging of batteries that have not yet reached the end-of-charge voltage is continued (Pate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013H02J7/0016H02J7/007182H01M2010/4271H01M10/441H01M50/51Y02E60/10H02J7/0048H01M50/514
Inventor 大野千寻庄田隆博
Owner YAZAKI CORP