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Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle

A technology of charging device and power storage device, which is applied to electric vehicles, power consumption devices, circuit devices, etc., can solve problems such as battery voltage increase, and achieve the effect of shortening time.

Inactive Publication Date: 2016-11-23
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the voltage of the battery increases unequally

Method used

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  • Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle
  • Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle
  • Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle

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no. 2 approach

[0045]

[0046]

[0047]

[0048] refer to figure 1 , the first embodiment of the present disclosure will be described. A bidirectional inverter denoted by 51 is connected between a system power supply and a battery system as an electric storage unit. The bidirectional inverter 51 is one example of a charging current generating circuit, and configurations other than the bidirectional inverter may be used. The battery system is configured to include a battery pack in which, for example, 16 batteries are connected in series. In another example of a battery pack, a parallel connection of multiple batteries may be used instead of a single battery, and the multiple parallel connections are connected in series. This disclosure can be applied to any battery pack.

[0049] In the first embodiment of the present disclosure, an example of a secondary battery in use is a lithium ion secondary battery including a positive electrode active material or a negative electrode active m...

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Abstract

There is provided a charging device including a charging voltage providing unit configured to provide a maximum charging voltage for an electricity storage unit, wherein the electricity storage unit includes a plurality of battery cells, and wherein the maximum charging voltage satisfies an equation (1) below: Maximum Charging Voltage = Total Battery Voltage + (Fully Charged Voltage - Maximum Cell Voltage)* n (1) wherein n represents a total number of the battery cells connected in series.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Japanese Priority Patent Application JP2014-078088 filed Apr. 4, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a charging device, a charging control method, an electric storage device, an energy storage device, a power system and an electric vehicle. Background technique [0004] As one method of charging a secondary battery, there is constant voltage charging. In this method, a constant voltage is applied from a charging unit to the secondary battery. In the charge start period, a large current flows, and in the charge end period, the charge current becomes small. Recently, high-voltage power storage devices such as power storage devices for houses and the like and batteries for electric vehicles are used, and a battery system having a series connection of secondary batteries (appropriately ca...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44B60L11/18H02J7/02
CPCB60L53/00H01M10/44H02J7/0013H02J7/007182H02J7/0016B60L3/12B60L2200/12B60L2210/30B60L2210/40B60L2240/545B60L2240/547B60L2240/549B60L2240/70B60L2250/16Y02T90/16Y02T10/70Y02T90/14Y04S10/126Y04S30/14B60L53/14B60L50/40B60L50/16B60L53/64B60L55/00B60L53/63B60L53/65B60L53/665B60L58/22B60L53/51B60L53/54B60L58/15H02J2310/48B60L53/305B60L58/14Y02E60/00Y02T10/7072Y02T10/72Y02T90/12Y02T90/167Y02E60/10H02J7/04B60L3/0046H02J7/00714H02J7/00712H02J7/0014
Inventor 菅野直之浅井久人熊谷英治伊佐博德俊梅津浩二
Owner MURATA MFG CO LTD