CN102490622A - Power supply control method for auxiliary system of electric automobile - Google Patents

Power supply control method for auxiliary system of electric automobile Download PDF

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Publication number
CN102490622A
CN102490622A CN2011104278506A CN201110427850A CN102490622A CN 102490622 A CN102490622 A CN 102490622A CN 2011104278506 A CN2011104278506 A CN 2011104278506A CN 201110427850 A CN201110427850 A CN 201110427850A CN 102490622 A CN102490622 A CN 102490622A
Authority
CN
China
Prior art keywords
auxiliary battery
lithium cell
converter
battery pack
electric energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011104278506A
Other languages
Chinese (zh)
Inventor
张风太
张翼
戴作强
李立伟
张铁柱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WINA (QINGDAO) BMS CO Ltd
Original Assignee
WINA (QINGDAO) BMS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WINA (QINGDAO) BMS CO Ltd filed Critical WINA (QINGDAO) BMS CO Ltd
Priority to CN2011104278506A priority Critical patent/CN102490622A/en
Publication of CN102490622A publication Critical patent/CN102490622A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Abstract

The invention belongs to the technical field of power supply management of electric automobiles, and particularly relates to a control method for auxiliary power supply of the electric automobiles. For a control device, an input end of a DC-DC converter (direct current to direct current converter) is connected with a bus bar of a power battery pack; an output end of the DC-DC converter is connected with a busbar of an auxiliary lithium battery pack; a management unit of the auxiliary lithium battery pack, the DC-DC converter and a management unit of the power battery pack are connected together by communication lines, and exchange data information and status information among each other through the communication lines; the DC-DC converter exchanges data with the management unit of the auxiliary lithium battery pack and the management unit of the power battery pack through the communication lines, and reads the status information of the auxiliary lithium battery pack and the power battery pack. The control device has simple structure and large reserve of electric energy; with the adoption of the control device, an automobile has long running distance, the automation degree on control of the electric energy is high, the utilization ratio of the electric energy is high and energy is saved.

Description

A kind of electronlmobil ancillary system method for controlling power supply
Technical field:
The invention belongs to electric car electric energy management and control technology field, relate to a kind of electronlmobil ancillary system method for controlling power supply.
Background technology:
Along with the aggravation of global energy crisis and the raising of environmental demands, electronlmobil is fast-developing and universal.The auxiliary power supply system of pure electric automobile adopts the pattern of traditional lead-acid storage battery+DC/DC basically at present; In this structure owing to use the lead-acid storage battery be not suitable for deep cycling; So the power designs of DC/DC is to equate with the gross horsepower of vehicle ancillary system or ancillary apparatus in the system; The output voltage of DC/DC is designed to the float charge voltage of lead-acid storage battery, and this structure obviously has several deficiencies: the one, and the output voltage of DC/DC is designed to the float charge voltage of lead-acid storage battery, and power is more than or equal to the ancillary system gross horsepower; So in electronlmobil cruising process; Lead-acid storage battery is in floating charge state all the time, and the electric energy reality that ancillary system consumed is provided by power battery pack basically, has not both made full use of the effective capacity of auxiliary battery banks; Consumed a large amount of power battery pack electric energy again, ancillary system will reduce by 5~10% continual mileage; The 2nd, the energy density of lead-acid storage battery is low, increases car weight, influences continual mileage; The 3rd, lead-acid storage battery does not meet environmental demands.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that prior art exists; Seek design a kind of novel electric vehicle ancillary apparatus method for controlling power supply is provided; Use environmental protection, light, long lithium cell of life-span replaces the auxiliary lead-acid storage battery of 12V; Realize to increase continual mileage, life-span, weight, environmental protection, meet the auxiliary power supply system of novel electric vehicle requirement; Having extended cycle life of lithium cell; Can carry out deep cycling; Substitute the accumulation power supply of lead-acid storage battery with lithium cell as the electronlmobil auxiliary power supply system; The electric energy that can make full use of auxiliary energy storage lithium cell group is participated in the power cycles of electronlmobil, realizes the efficient utilization of the vehicle-mounted electric energy of electronlmobil, increases the electronlmobil continual mileage.
To achieve these goals; The inventive method is accomplished in the design-calculated control setup voluntarily, and described control setup agent structure comprises lithium cell auxiliary battery banks, auxiliary battery banks administrative unit, DC-DC converter, power battery pack and power battery group management unit; The input end of DC-DC converter is electrically connected with the bus of power battery pack; The mouth of DC-DC converter is electrically connected with the bus of lithium cell auxiliary battery banks; Auxiliary battery banks administrative unit, DC-DC converter and power battery group management unit are electrically connected through communication line, and auxiliary battery banks administrative unit, DC-DC converter and power battery group management unit are each other through communication line swap data and status information; DC-DC converter reads the status information of lithium cell auxiliary battery banks and power battery pack respectively through communication line and auxiliary battery banks administrative unit and power battery group management elements exchange data; Realize the automation control of power supply by auxiliary battery banks administrative unit and power battery group management unit; When power battery pack is in non-charge condition; The auxiliary battery banks administrative unit is judged the state-of-charge (SOC or State of Charge) of lithium cell auxiliary battery banks; If the SOC of lithium cell auxiliary battery banks is greater than setting value, then DC-DC converter is closed, and the required electric energy of electronlmobil ancillary apparatus is provided by the lithium cell auxiliary battery banks; As the SOC of lithium cell auxiliary battery banks during less than setting value, then DC-DC converter is opened, and by DC-DC converter the required electric energy of electronlmobil ancillary apparatus is provided, and output voltage is by predetermined value output; When power battery pack is in charge condition; DC-DC converter is opened; DC-DC converter is given the charging of lithium cell auxiliary battery banks after with the electric energy Direct Transform of external charge machine; Make lithium cell auxiliary battery banks and power battery pack be full of electric energy synchronously, or the lithium cell auxiliary battery banks formerly is full of faster than power battery pack, to satisfy the power supply of the ancillary apparatus that electronlmobil goes again; When the electronlmobil cruising; The electric energy that electronlmobil needs is all provided by the lithium cell auxiliary battery banks; The capacity of lithium cell auxiliary battery banks (ampere-hour) is designed to change synchronously with power battery pack; The time that the capacity of lithium cell auxiliary battery banks drives fully loaded car load ancillary apparatus is equal to or greater than the time that the electrokinetic cell pool-size can powered vehicle, to make full use of the capacity of lithium cell auxiliary battery banks, participates in the power cycles of car load; The capacity of lithium cell auxiliary battery banks is excessive, and when then the power battery pack electric energy had been put, the lithium cell auxiliary battery banks had residual capacity, causes waste of capacity, and the manufacturing cost of vehicle increases; The capacity of lithium cell auxiliary battery banks is too small; When then the power battery pack electric energy had not also been put, auxiliary battery banks had not had electric energy, needed through DC-DC converter from the power battery pack electric energy supplement; Then can reduce the utilization ratio of vehicle-mounted electric energy, reduce the travelled distance of electronlmobil; When the lithium cell auxiliary battery banks exhausts electric energy prior to power battery pack, DC/DC supplies with ancillary apparatus with the electric energy conversion back of power battery pack, keeps the cruising of electronlmobil.
The present invention compared with prior art, the control setup integral structure of its use is simple, the electric energy storage amount is big, electronlmobil operation distance is long, the controlling electric energy degree of automation is high, utilization rate of electrical is high, the saving energy.
Description of drawings:
Fig. 1 is the electric supply installation structural principle schematic block diagram that the present invention relates to.
The specific embodiment:
Below through embodiment and combine accompanying drawing to be described further.
Embodiment:
Present embodiment is accomplished control method in comprising the control setup that lithium cell auxiliary battery banks 1, auxiliary battery banks administrative unit 2, DC-DC converter 3, power battery pack 4 and power battery group management unit 5 are formed; The input end of the DC-DC converter 3 of its described control setup connects the bus of power battery pack 4; The mouth of DC-DC converter 3 connects the bus of lithium cell auxiliary battery banks 1; Auxiliary battery banks administrative unit 2, DC-DC converter 3 and power battery group management unit 5 link together through communication line, and auxiliary battery banks administrative unit 2, DC-DC converter 3 and power battery group management unit 5 are through mutual swap data of communication line and status information; When realizing power supply control, DC-DC converter 3 reads the status information of lithium cell auxiliary battery banks 1 and power battery pack 4 respectively through communication line and auxiliary battery banks administrative unit 2 and power battery group management unit 5 swap datas; When power battery pack 4 is in non-charge condition; Judge the SOC (State of Charge) of lithium cell auxiliary battery banks 1; If the SOC of lithium cell auxiliary battery banks 1 is greater than setting value; Then DC-DC converter 3 is closed, and the required electric energy of electronlmobil ancillary apparatus is provided by lithium cell auxiliary battery banks 1; As the SOC of lithium cell auxiliary battery banks 1 during less than setting value, then DC-DC converter 3 is opened, and by DC-DC converter 3 the required electric energy of electronlmobil ancillary apparatus is provided, and output voltage is by predetermined value output; When power battery pack 4 is in charge condition; DC-DC converter 3 is opened; DC-DC converter 3 is given the charging of lithium cell auxiliary battery banks after with the electric energy Direct Transform of battery charger; And guarantee that lithium cell auxiliary battery banks 1 and power battery pack 4 are full of synchronously, or slightly faster than power battery pack, to guarantee the power supply of the ancillary system that vehicle goes again.

Claims (1)

1. electronlmobil ancillary system method for controlling power supply; It is characterized in that accomplishing in the design-calculated control setup voluntarily, described control setup agent structure comprises lithium cell auxiliary battery banks, auxiliary battery banks administrative unit, DC-DC converter, power battery pack and power battery group management unit; The input end of DC-DC converter is electrically connected with the bus of power battery pack; The mouth of DC-DC converter is electrically connected with the bus of lithium cell auxiliary battery banks; Auxiliary battery banks administrative unit, DC-DC converter and power battery group management unit are electrically connected through communication line, and auxiliary battery banks administrative unit, DC-DC converter and power battery group management unit are each other through communication line swap data and status information; DC-DC converter reads the status information of lithium cell auxiliary battery banks and power battery pack respectively through communication line and auxiliary battery banks administrative unit and power battery group management elements exchange data; Realize the automation control of power supply by auxiliary battery banks administrative unit and power battery group management unit; When power battery pack is in non-charge condition; The auxiliary battery banks administrative unit is judged the state-of-charge or the SOC of lithium cell auxiliary battery banks; If the SOC of lithium cell auxiliary battery banks is greater than setting value, then DC-DC converter is closed, and the required electric energy of electronlmobil ancillary apparatus is provided by the lithium cell auxiliary battery banks; As the SOC of lithium cell auxiliary battery banks during less than setting value, then DC-DC converter is opened, and by DC-DC converter the required electric energy of electronlmobil ancillary apparatus is provided, and output voltage is by predetermined value output; When power battery pack is in charge condition; DC-DC converter is opened; DC-DC converter is given the charging of lithium cell auxiliary battery banks after with the electric energy Direct Transform of external charge machine; Make lithium cell auxiliary battery banks and power battery pack be full of electric energy synchronously, or the lithium cell auxiliary battery banks formerly is full of faster than power battery pack, to satisfy the power supply of the ancillary apparatus that electronlmobil goes again; When the electronlmobil cruising; The electric energy that electronlmobil needs is all provided by the lithium cell auxiliary battery banks; The lithium cell auxiliary battery banks with the Capacity design of ampere hour meter for to change synchronously with power battery pack; The time that the capacity of lithium cell auxiliary battery banks drives fully loaded car load ancillary apparatus is equal to or greater than the time that the electrokinetic cell pool-size can powered vehicle, to make full use of the capacity of lithium cell auxiliary battery banks, participates in the power cycles of car load; The capacity of lithium cell auxiliary battery banks is excessive, and when then the power battery pack electric energy had been put, the lithium cell auxiliary battery banks had residual capacity and causes waste of capacity; The capacity of lithium cell auxiliary battery banks is too small; When then the power battery pack electric energy had not also been put, auxiliary battery banks had not had electric energy, needed through DC-DC converter from the power battery pack electric energy supplement; Then can reduce the utilization ratio of vehicle-mounted electric energy, reduce the travelled distance of electronlmobil; When the lithium cell auxiliary battery banks exhausts electric energy prior to power battery pack, DC/DC supplies with ancillary apparatus with the electric energy conversion back of power battery pack, keeps the cruising of electronlmobil.
CN2011104278506A 2011-12-19 2011-12-19 Power supply control method for auxiliary system of electric automobile Pending CN102490622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102490622A true CN102490622A (en) 2012-06-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103832290A (en) * 2013-12-23 2014-06-04 惠州市亿能电子有限公司 DC/DC control method in working mode
CN104385935A (en) * 2014-11-24 2015-03-04 中投仙能科技(苏州)有限公司 Low-power-consumption control system of battery manager
CN104512268A (en) * 2013-09-26 2015-04-15 现代自动车株式会社 Method and system for controlling environmentally-friendly vehicle
CN111976507A (en) * 2014-09-02 2020-11-24 葛炽昌 Electric vehicle with exchange battery group

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US6847127B1 (en) * 2002-06-28 2005-01-25 Hyundai Motor Company System and method for controlling power distribution of fuel cell hybrid electric vehicle
KR20050036185A (en) * 2003-10-15 2005-04-20 현대자동차주식회사 A main battery power management device for 42 voltage system of vehicle and method thereof
KR20060069136A (en) * 2004-12-17 2006-06-21 현대자동차주식회사 Power division control system of hybrid vehicle and method thereof
CN1817679A (en) * 2006-03-24 2006-08-16 清华大学 Mixed energy driving system of vehicle with fuel batteries
CN201329816Y (en) * 2008-12-31 2009-10-21 众泰控股集团有限公司 Entire automobile electric system for electric automobile
CN101931253A (en) * 2010-08-31 2010-12-29 重庆长安汽车股份有限公司 CAN bus-based pure electric vehicle charging method and system
US20110148205A1 (en) * 2009-12-17 2011-06-23 Samsung Sdi Co., Ltd. Power storage system and method of controlling the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6847127B1 (en) * 2002-06-28 2005-01-25 Hyundai Motor Company System and method for controlling power distribution of fuel cell hybrid electric vehicle
KR20050036185A (en) * 2003-10-15 2005-04-20 현대자동차주식회사 A main battery power management device for 42 voltage system of vehicle and method thereof
KR20060069136A (en) * 2004-12-17 2006-06-21 현대자동차주식회사 Power division control system of hybrid vehicle and method thereof
CN1817679A (en) * 2006-03-24 2006-08-16 清华大学 Mixed energy driving system of vehicle with fuel batteries
CN201329816Y (en) * 2008-12-31 2009-10-21 众泰控股集团有限公司 Entire automobile electric system for electric automobile
US20110148205A1 (en) * 2009-12-17 2011-06-23 Samsung Sdi Co., Ltd. Power storage system and method of controlling the same
CN101931253A (en) * 2010-08-31 2010-12-29 重庆长安汽车股份有限公司 CAN bus-based pure electric vehicle charging method and system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104512268A (en) * 2013-09-26 2015-04-15 现代自动车株式会社 Method and system for controlling environmentally-friendly vehicle
CN104512268B (en) * 2013-09-26 2019-01-04 现代自动车株式会社 For controlling the method and system of environmentally friendly vehicle
CN103832290A (en) * 2013-12-23 2014-06-04 惠州市亿能电子有限公司 DC/DC control method in working mode
CN111976507A (en) * 2014-09-02 2020-11-24 葛炽昌 Electric vehicle with exchange battery group
CN111976507B (en) * 2014-09-02 2021-12-24 葛炽昌 Electric vehicle with exchange battery group
CN104385935A (en) * 2014-11-24 2015-03-04 中投仙能科技(苏州)有限公司 Low-power-consumption control system of battery manager

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Application publication date: 20120613