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Secondary battery management device, secondary battery management method, and non-transitory storage medium

A technology of secondary battery and management device, which is applied in the direction of secondary battery, battery circuit device, charging/discharging of secondary battery, etc., can solve the problems of different charging and discharging control and management methods of secondary battery, etc.

Pending Publication Date: 2021-06-22
YOKOGAWA ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the conventional systems, the management of information indicating the detected state of the secondary battery is performed independently in the secondary battery pack in many cases.
In addition, if the manufacturer of the secondary battery pack is different, the information indicating the state of the secondary battery and the management method of charge and discharge control are different.
In this way, conventionally, information indicating the state of the secondary battery is managed internally, so there are problems in accurately grasping the state of the secondary battery and properly controlling the charge and discharge of the secondary battery.

Method used

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  • Secondary battery management device, secondary battery management method, and non-transitory storage medium
  • Secondary battery management device, secondary battery management method, and non-transitory storage medium
  • Secondary battery management device, secondary battery management method, and non-transitory storage medium

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no. 1 Embodiment approach

[0043]

[0044] A configuration example of a secondary battery management system according to an embodiment of the present invention will be described. figure 1 It is a block diagram showing the configuration of the secondary battery management system of the first embodiment. figure 1 The illustrated secondary battery management system includes a management device 100 and a plurality of secondary battery assemblies 200A to 200C. Users of the secondary battery management system are, for example, electric power companies, information service companies, managers of facilities, and information aggregators (aggregators).

[0045] figure 1 The illustrated plurality of secondary battery packs 200A to 200C may be secondary battery packs 200 of different manufacturers. In addition, in figure 1 In the example of , the case where the secondary battery management system has a plurality of secondary battery packs 200A to 200C is illustrated, but there may be one secondary battery pack...

no. 2 Embodiment approach

[0097] Although in figure 1 Although not shown in the figure, the secondary battery pack 200 has a battery cell group in which a plurality of battery cells of the secondary battery 201 are connected in series. When the remaining capacities of the plurality of single cells do not match, the remaining capacity of the secondary battery 201 is limited to the remaining capacity of the single battery with the smallest remaining capacity. Therefore, in order to balance the remaining capacities of the individual cells, discharge control among the cells is performed (cell balancing function).

[0098] Here, an example of control of the cell balancing function will be described. For example, in the control of the cell balancing function, when a specific cell among a plurality of cells reaches the maximum voltage (full charge), charging of the cell is stopped and the cell is discharged. In addition, for example, charging instructions are given to other single cells that have not reache...

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Abstract

A secondary battery management device is communicably connected to a secondary battery unit including a secondary battery, and manages the secondary battery unit. The secondary battery management device is configured to: request the secondary battery unit to transmit a voltage and a state value of the secondary battery; receive the voltage and the state value of the secondary battery transmitted from the secondary battery unit; calculate a value of correction of the state value on the basis of the voltage and the state value which have been received; and transmit the calculated value of correction to the secondary battery unit in order to apply the calculated value of correction.

Description

technical field [0001] The present invention relates to a secondary battery management device, a secondary battery management method, and a computer-readable non-transitory recording medium. [0002] This application claims priority based on Japanese Patent Application No. 2019-229655 filed on December 19, 2019, and the content thereof is used here. Background technique [0003] In recent years, systems that have chargeable and dischargeable secondary batteries and charge and discharge the secondary batteries as needed are used in various fields. For example, in the field of electric power, it is used to shift a part of daytime power consumption to nighttime power (peak shift). In such a system, in order to operate the system safely and efficiently for a long period of time, it is very important to detect information indicating the state of the secondary battery with high precision. The information indicating the state of the secondary battery is, for example, the remainin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H01M10/48H02J7/00
CPCH01M10/441H01M10/482H02J7/0013H02J7/0068G01R31/374G01R31/3842Y02E60/10H02J7/00032H01M10/44H02J7/0016H02J7/0047
Inventor 数见昌弘松下武司
Owner YOKOGAWA ELECTRIC CORP
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