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Charge-discharge control device for secondary battery

A charge and discharge control, secondary battery technology, applied in the direction of secondary battery charging/discharging, battery/fuel cell control device, battery circuit device, etc. question

Pending Publication Date: 2021-12-21
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the structure disclosed in Patent Document 1, since the charge rate decreases as the temperature rises, the charge amount per unit time decreases. The need for reduced time

Method used

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  • Charge-discharge control device for secondary battery
  • Charge-discharge control device for secondary battery
  • Charge-discharge control device for secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] use Figure 1 to Figure 5 Embodiments of the charge and discharge control device for the secondary battery described above will be described.

[0029] A charge and discharge control device 1 for a secondary battery 2 (hereinafter referred to as "charge and discharge control device 1") of the present embodiment is mounted on a vehicle. Furthermore, the charge and discharge control device 1 includes a degradation information estimation unit 20 , an input / output area setting unit 30 , and a charge and discharge control unit 50 .

[0030] The degradation information estimation unit 20 estimates degradation information of the secondary battery 2 .

[0031] The input / output region setting unit 30 controls to expand the initial allowable region of the input / output predetermined in the secondary battery 2 based on the estimation result of the degradation information estimating unit 20 .

[0032] The charging / discharging control unit 50 performs control within the expansion al...

Embodiment approach 2

[0064] In Embodiment 1, the input / output area setting unit 30 sets the initial allowable area so that the upper limit value L2 of the allowable area becomes the limit temperature and limit output / input value of the usable range of the secondary battery 2 . Lifting amount of upper limit L1. In this embodiment, if Figure 7 shown, does not have figure 1 The cooling performance control unit 60 shown is equipped with Figure 7 In the illustrated expansion amount setting unit 35 , the expansion amount setting unit 35 sets the expansion amount of the expansion allowable area set by the input / output area setting unit 30 based on the degradation information acquired by the degradation information estimation unit 20 . In addition, in this Embodiment 2, if Figure 7 shown, does not have figure 1 The operation input unit 40 is shown. The other constituent elements are the same as those in Embodiment 1, and in this embodiment, the same symbols as in Embodiment 1 are used and descript...

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Abstract

This charge-discharge control device (1) for a secondary battery (2) is mounted on a vehicle. The charge-discharge control device (1) is provided with a deterioration information deduction unit (20), an input / output range setting unit (30), and a charge-discharge control unit (50). The deterioration information deduction unit (20) deduces deterioration information of the secondary battery (2). The input / output range setting unit (30) performs control so as to cause an initially permitted input / output range, which is predetermined in the secondary battery (2), to be expanded on the basis of a deduction result of the deterioration information deduction unit (20). The charge-discharge control unit (50) performs control such that an expanded permitted range determined as a result of expanding the initially permitted range by the input / output range setting unit (30) is used.

Description

[0001] Cross-references to related applications [0002] This application is based on Japanese Application No. 2019-92902 filed on May 16, 2019, and the content described therein is incorporated herein. technical field [0003] The invention relates to a charge and discharge control device for a secondary battery. Background technique [0004] Conventionally, in a power supply device including a secondary battery mounted on a vehicle, the temperature of the secondary battery is controlled for the purpose of suppressing deterioration of the secondary battery and prolonging its life. Since the temperature of the secondary battery increases due to heat generated during charging, charging is controlled so that the temperature does not rise excessively. In the configuration disclosed in Patent Document 1, charging is performed with a charging rate set based on a difference between a preset battery temperature upper limit for each secondary battery and a battery temperature detec...

Claims

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Application Information

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IPC IPC(8): H01M10/42B60L50/60B60L58/16B60L58/24H01M10/44H01M10/48H02J7/00H02J7/04
CPCB60L50/60B60L58/16B60L58/24H01M10/42H01M10/44H01M10/48H02J7/00H02J7/04Y02E60/10Y02T10/70
Inventor 长岛翔大平耕司藤井宏纪
Owner DENSO CORP