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Control device for secondary battery, and control method for secondary battery

A secondary battery and control device technology, applied in secondary battery charging/discharging, secondary battery, secondary battery repair/maintenance, etc., can solve problems such as reduction of released power, and achieve suppression of reduction of absorbed power and suppression of release Power reduction, the effect of suppressing frequent changes

Active Publication Date: 2014-08-06
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent Document 1 raises the problem of the prior art that the discharge power decreases due to power supply to the heater (paragraph 0007)

Method used

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  • Control device for secondary battery, and control method for secondary battery
  • Control device for secondary battery, and control method for secondary battery
  • Control device for secondary battery, and control method for secondary battery

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Experimental program
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no. 1 approach

[0065]The first embodiment relates to a power storage device 1002 .

[0066] (Overview of Power Storage Device 1002)

[0067] Figure 4 is a block diagram of the power storage device 1002 of the first embodiment.

[0068] like Figure 4 As shown, the power storage device 1002 includes: battery cells 1005 for storing electric power; AC to DC; transformer 1011, which boosts the power discharged from the power storage device 1002 and steps down the power absorbed by the power storage device 1002; transformer 1014, which steps down the power supplied to the heater 1062; A transformer 1017 that steps down the power supplied to the overall control section 1023 and the battery unit control section 1056; a power transmission path 1020 for power transmission; an overall control section 1023 for controlling the power storage device 1002; an operation for accepting operations part 1026; a display part 1029 for displaying information.

[0069] In addition, the power storage device 10...

no. 2 approach

[0141] The second embodiment involves prioritization of power supply to heaters 1062 instead of the priority determination of power supply to heaters 1062 of the first embodiment.

[0142] In the first embodiment, the lower the measured value T(j) of the temperature of the cell assembly 1059 is, the higher the supply priority of the heater 1062 for heating the cell assembly 1059 is. Power supply is permitted in order from the heater 1062 with the highest priority to the heater 1062 with the lowest supply priority. On the other hand, in the second embodiment, the lower the measured value T(j) of the temperature of the unit cell assembly 1059 is, the higher the supply priority order to which the heater 1062 for heating the unit cell assembly 1059 belongs. Classification allows power supply in the order from the heater 1062 with the highest supply priority classification to the heater 1062 with the lowest priority classification.

[0143] Figure 8 It is a block diagram illustr...

no. 3 approach

[0149] The third embodiment involves a connection to the system 1092 controlling the power transmission path 1050 instead of the connection to the system 1092 controlling the power transmission path 1050 of the first embodiment.

[0150] In a first embodiment, the control transmission path 1050 merges with the discharge / charge transmission path 1044 and the heater transmission path 1047 and is connected to the system 1092 via the power meter 1032 . In contrast, in the third embodiment, such as Figure 9 As shown in the block diagram of , the control transmission path 1050 does not merge with the discharge / charge transmission path 1044 and the heater transmission path 1047 and is not connected to the system 1092 via the power meter 1032 .

[0151] In this case, the total control power TPS2 is not considered in the calculation of the discharging / charging power, that is, the term of the total control power TPS2 is removed from equation (4). On the other hand, the required value ...

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Abstract

The present invention provides a secondary battery control device and a secondary battery control method that suppress reductions in released power and absorbed power. When the power storage device requires power release, the restriction on power supply to the power consumer is relatively strengthened, and when the power storage device requires power absorption, the restriction on power supply to the power consumer is relatively weakened. When the power storage device requires the discharge power, the command value PD of the discharge power is calculated by adding the discharge power request value PE to the supply power PS. When the power storage device requires the absorbed power, the command value PC of the charging power is calculated by subtracting the supplied power PS from the required value PA of the absorbed power.

Description

technical field [0001] The invention relates to a control device for a secondary battery and a control method for the secondary battery. Background technique [0002] Sodium-sulfur batteries (hereinafter referred to as "NaS batteries") are batteries that operate at high temperatures. Therefore, the NaS battery is used together with a heater that heats the NaS battery, and operates while maintaining a high temperature. [0003] Patent Document 1 relates to control of a heater for heating a NaS battery. Patent Document 1 raises the problem of the prior art that the discharge power decreases due to power supply to the heater (paragraph 0007). In addition, in order to solve this conventional problem, Patent Document 1 proposes a solution such as lowering the set temperature of the heater between the end of charging and the start of discharge (paragraph 0015). [0004] Prior art literature: [0005] patent documents [0006] Patent Document 1: JP-A-2004-111123 SUMMARY OF T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/39H01M10/42H01M10/44H01M10/46H01M10/48H01M10/615H01M10/6571
CPCH01M10/5083H01M10/46H01M10/44H01M10/615H01M10/425H01M10/3909H01M10/443H01M10/486H02J3/32H01M10/5006H01M10/6571H01M10/48Y02P80/14Y02E60/10
Inventor 阿部浩幸八田哲也
Owner NGK INSULATORS LTD
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