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CN105493335B - 电池控制装置 - Google Patents

电池控制装置 Download PDF

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CN105493335B
CN105493335B CN201480047466.5A CN201480047466A CN105493335B CN 105493335 B CN105493335 B CN 105493335B CN 201480047466 A CN201480047466 A CN 201480047466A CN 105493335 B CN105493335 B CN 105493335B
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CN105493335A (zh
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关崎将士
榎本伦人
白石刚之
板垣勇志
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GS Yuasa International Ltd
Yazaki Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0038—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
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    • B60—VEHICLES IN GENERAL
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    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B60L2240/441—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/22—Standstill, e.g. zero speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
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Abstract

CPU(10)所进行的自我诊断处理以获取的车辆动作信息和发动机动作信息为基础，判断车辆是否处于怠速停止状态，进行异常检测处理。在搭载怠速停止功能的车辆中发动机停止的情况下，由于向车辆的电气元件供给电力，因此，从电池对电气元件供给电流。其结果是，CPU(10)利用在车辆停止中且点火装置(30)为接通的状态下实施电流计测时的电流计测结果，在为规定的电流值以下时，判断为计测系统具有异常。由此，提供一种技术，在能检测蓄电池的状态的电池控制装置中，能够用简单的自我诊断处理来进行计测系统的异常检测处理。

Description

电池控制装置
技术领域
本发明涉及电池控制装置，涉及例如具有电池系统的自我诊断功能的电池控制装置。
背景技术
电动汽车、PHV(插入式混合动力车)被实用化且各种车种已投入了市场。在这样的车辆中，利用电力作为动力源。另外，搭载怠速停止功能以实现改善燃料消耗率。另外，在这样的车辆中，确保系统的可靠性、即包含电池控制装置的电池单元的可靠性是非常重要的。而且，在电池控制装置中执行自我诊断功能，掌握异常产生。
图1是示出已知的具有自我诊断功能的电池系统的控制部(CPU110)的框图。另外，图2是示出CPU110所进行的自我诊断功能的处理的流程图，主要着眼于电流计测系统的异常检测处理而示出。
事先决定相对于获取的电池V的电压变化的电流变化量，之后，CPU110据此来进行异常检测。具体而言，CPU110开始计测系统自我诊断(S110)，如果点火装置130为断开(S112的否)，那么进行检测规定电压变化的处理(S114)。CPU110检测到规定电压变化时(S114的是)，进行检测放电电流是否为规定电流以下的处理(S116)。如果是规定电流以下(S116的是)，那么CPU110判断为在电流计测系统120中产生了异常(S118)。
已知能够在这样的电池系统中检测2次电池的劣化、计测系统的异常的自我诊断技术(例如参照专利文献1)。具体而言，专利文献1所公开的技术通过累计由电流测定部检测的电流来算出二次电池的充电状态(SOC)，基于电压测定部和电流测定部的测定值，将预定的第1和第2时机的二次电池的开路电压推定为第1和第2开路电压值。接着，基于第1和第2时机的第1和第2SOC，获取与二次电池的充放电量相关的第1信息，基于第1和第2时机的第1和第2开路电压值，获取与二次电池的充放电量相关的第2信息，基于第1和第2信息，判定二次电池、电压检测部和电流检测部有无异常。
现有技术文献
专利文献
专利文献1：日本特开2010-200574号公报
发明内容
本发明欲解决的问题
顺便提及，在图1和图2所示的现有技术中，是以电压测定系统正常为前提的。因此，存在的问题是：即使在判断为发生了异常的情况下，也不能区别是电压计测系统的异常还是电流计测系统的异常。在专利文献1所公开的技术中也同样。因此，存在的问题是：进行异常检测的自我诊断处理会增加，处理会变得复杂，另外，自我诊断处理的时机受限，希望有其他技术。
本发明的目的是鉴于这样的状况而完成的，提供一种解决上述问题的技术。
用于解决问题的方案
本发明是一种电池控制装置，包括具有电池系统的自我诊断功能的控制部，所述控制部以车辆动作状态的信息和发动机动作的信息为基础，在车辆为动作状态且发动机为停止状态的情况下，如果蓄电池的放电电流的值为规定以下，那么判断为产生异常。
另外，所述车辆动作状态的信息可以是点火装置是否接通的信息。
另外，所述发动机动作的信息可以是发动机转速。
另外，该电池控制装置典型地适用于搭载了怠速停止功能的车辆，该车辆中，在车辆动作中行进停止且发动机停止的怠速停止状态下，从搭载在该车辆中的所述蓄电池向车辆的电气元件供给电力，所述控制部在点火装置为接通状态，且发动机为停止中的情况下，判断为是所述怠速停止状态，并且在所述蓄电池的放电电流的值为规定以下的情况下，判定为电流计测系统产生了异常。
发明效果
根据本发明，提供一种技术，在能检测蓄电池的状态的电池控制装置中，能够用简单的自我诊断功能来进行计测系统的异常检测处理。另外，在其他方面，能够增加自我诊断处理的时机。
附图说明
图1是示出背景技术所涉及的具有自我诊断功能的电池系统的控制部的框图。
图2是示出背景技术所涉及的控制部(CPU)所进行的自我诊断功能的处理的流程图。
图3是示出实施方式所涉及的具有自我诊断功能的电池系统的控制部的框图。
图4是示出实施方式所涉及的控制部(CPU)所进行的自我诊断功能的处理的流程图。
附图标记说明
1：电池系统
10：CPU(电池控制装置)
20：电流计测系统
30：点火装置(车辆动作信息)
40：发动机转速信息
具体实施方式
下面，参照附图来说明具体实施方式(以下记作“实施方式”)。
图3是示出本实施方式所涉及的具有自我诊断功能的电池系统1的控制部(电池控制装置)即CPU10(微型计算机)的框图。
CPU10具有进行自我诊断处理的功能(自我诊断功能)，对搭载在混合动力车、电动汽车等车辆中的电池系统1进行控制，获取车辆动作状态的信息(以下，有的情况下记作“车辆动作信息”)和发动机动作的信息(以下，有的情况下记作“发动机动作信息”)，并且计测电池电压和充放电电流。
在本实施方式中，CPU10所进行的自我诊断处理以获取的车辆动作信息和发动机动作信息为基础，判断车辆是否处于怠速停止状态，进行异常检测处理。在搭载了怠速停止功能的车辆中，在车辆动作中行进停止的情况下，满足预定的条件时，发动机会停止。在该状态下，从搭载的电池(蓄电池)V向车辆的电气元件供给电源(电力)。因此，在该状态下一定从电池V向电气元件流动有电流。其结果是，CPU10利用在车辆停止中且点火装置30为接通的状态下实施电流计测时的电流计测结果，来检测计测系统是否有异常。
图4是示出CPU10所进行的自我诊断功能的处理的流程图，特别着眼于电流计测系统20的异常检测处理进行示出。
CPU10在开始计测系统的自我诊断处理(S10)后，判断点火装置30是否为接通状态(S12)。在点火装置30为接通状态的情况下(S12的是)，CPU10根据获取的发动机转速信息(ENGRPM)40来判断发动机转速是否大于0(S14)。即，判断发动机是动作中还是停止中。
如果发动机转速为0以下，即发动机在停止中(S14的否)，那么CPU10判断为是怠速停止状态，并且从电流计测系统20获取电流值，判断是否流过规定以上的放电电流(S16)。如上所述，在怠速停止状态的情况下，由于对车辆的电气元件供给电力，因此如果正常的话，需要流过比规定大的放电电流。所以，在没有流过比规定大的放电电流的情况下，即，在放电电流的值为规定以下的情况下(S16的否)，CPU10判定为电流计测系统20产生了异常(S18)。
在点火装置30为断开状态的情况下(S12的否)、发动机为动作中的情况下(S14的是)、以及在怠速停止状态下流过比规定大的放电电流的情况下(S16的是)，CPU10的处理返回到S12的处理。
以上，根据本实施方式，在电流计测结果不是比规定大的放电电流值的情况下，即，在放电电流的值为规定以下的情况下，能够判断为计测系统具有异常。即，利用简单的构成、处理，能够不被电压系统左右地进行电流计测系统的异常判定。而且，能够将该结果(异常)向上位的系统警告，上位的系统能够提早进行适当的对应。
另外，通过使用车辆动作信息(点火装置30是否是接通的信息)和发动机转速信息40，从而自我诊断处理的时机会增加，能够提高检测异常的能力。
以上，以实施方式为基础说明了本发明。本领域技术人员可以理解本实施方式只是例举，能够对这些各构成要素及其组合施加各种变形例，另外，这样的变形例也处于本发明的范围内。例如，作为进行自我诊断处理的构成，例举了1个CPU10，但当然也可以由多个CPU构成。

Claims (2)

1.一种电池控制装置，其特征在于，
具有电池系统的自我诊断功能，
以车辆动作状态的信息和发动机动作的信息为基础，在车辆为动作状态且发动机为停止状态的情况下，如果蓄电池的放电电流的值为规定以下，那么判断为产生了异常，
所述车辆动作状态的信息是点火装置是否接通的信息，
所述发动机动作的信息是发动机转速。
2.如权利要求1所述的电池控制装置，其特征在于，
适用于搭载了怠速停止功能的车辆，该车辆中，在车辆动作中行进停止且发动机停止的怠速停止状态下，从搭载在该车辆中的所述蓄电池向车辆的电气元件供给电力，
在点火装置为接通状态，且发动机为停止中的情况下，判断为是所述怠速停止状态，并且在所述蓄电池的放电电流的值为规定以下的情况下，判定为电流计测系统产生了异常。
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