CN103078372A - Method for charging electric automobile in multi-battery pack mode - Google Patents
Method for charging electric automobile in multi-battery pack mode Download PDFInfo
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- CN103078372A CN103078372A CN2012105919314A CN201210591931A CN103078372A CN 103078372 A CN103078372 A CN 103078372A CN 2012105919314 A CN2012105919314 A CN 2012105919314A CN 201210591931 A CN201210591931 A CN 201210591931A CN 103078372 A CN103078372 A CN 103078372A
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Abstract
The invention discloses a method for charging an electric automobile in a multi-battery pack mode. The method comprises the following steps of: (1) charging battery packs under constant power at the charging current I1; (2) lowering the charging current to I2 when voltages at the two ends of the battery packs are up to a first threshold value according to detection, and continually charging under constant power; (3) lowering the charging current to I3 when voltages at the two ends of the battery packs are up to a second threshold value according to detection, and continually charging under constant power, wherein the second threshold value is larger than the first threshold value; and (4) finishing charging when voltages at the two ends of the battery packs are up to a third threshold value according to detection, wherein the third threshold value is the rated voltage of each battery pack, and is larger than the second threshold value. The invention provides a method for charging the electric automobile in the multi-battery pack mode, which has the advantages of high charging efficiency and high safety.
Description
Technical field
The present invention relates to the electric vehicle charging electro-technical field, relate in particular to a kind of electric vehicle charging method for electrically of many battery pack pattern.
Background technology
Electric automobile is compared advantages such as having energy-saving and emission-reduction and environmental protection with the regular fuel motor vehicle, thereby has given play in recent years more and more consequence and effect in people's traffic trip.Up to the present, the charging service of domestic most electric automobiles provides the fixed point battery altering to realize by national grid.Yet the big city such as Shanghai, Beijing started the large-scale charter business of electric automobile and charging station construction bid project in succession over the past two years; Each big and medium-sized cities, the whole nation also begin to build in batches the stake of electric automobile user self-filling electricity gradually near residential quarter, Public Parking and commercial consumption district simultaneously.Above development trend shows that the charging electric vehicle business will further further stride forward to multi-functional, multizone, intelligentized direction on the basis of battery altering business in the past.Therefore, the construction of popularizing the infrastructure supporting with using still too busy to get away relevant charging of present domestic charging electric vehicle business and perfect.This so use and the function of charging device of electric automobile had higher requirement.The investigation demonstration, the user wishes that vehicle charging system has certain intelligent functions, namely the user can select the functional modules such as charging interval, the fast slow mode of charging and timing charging of vehicle, to make things convenient for the use of vehicle under the different condition.
The selection of above charge mode has great importance for battery circulation control and charging safety etc.For example, the certain user requires at short notice its vehicle have been carried out charging, and it is that battery charges that this process often adopts DC power supply.Yet the DC power supply charging current is larger, will greatly shorten battery, therefore can only be as a kind of emergent replenishing.Both at home and abroad the electric automobile research staff finds to use the problems such as the unsaturated and battery-heating deformation of low, the full charge volume of rechargeable battery ubiquity rechargeable energy conversion efficiency of direct current charging.Wherein the low use impact for vehicle user of charge efficiency is the most obvious, will reduce the mileage number of electric automobile wheeled, causes frequent charge in the user segment time, has also shortened the useful life of battery simultaneously.In order to overcome the above problems, the research staff has carried out deep exploration to the Charge Management pattern of electric automobile rechargeable battery both at home and abroad.Wherein the control system design of regulating load current balance becomes the key factor that addresses this problem.Therefore how to design corresponding control system or device with control battery this process of charging, charging has key meaning for D.C. high-current.This control design should be embodied in as the electric automobile user environment for use sustainable, that capacity usage ratio is high, fail safe is good is provided.
Therefore, for useful life, fail safe and the flying power of effective guarantee batteries of electric automobile, and improve simultaneously the energy conversion efficiency of battery charging, set up a kind of many battery pack optimization charging methods perfect, safe, easy and simple to handle imperative.The work of probing into of the method has important real value for reducing electric energy loss and energy-saving low-carbon environmental protection etc.
Summary of the invention
For the deficiency that charge efficiency is lower, fail safe is relatively poor of the electric vehicle charging method for electrically that overcomes existing many battery pack pattern, the invention provides the electric vehicle charging method for electrically of many battery pack pattern that a kind of charge efficiency is higher, fail safe is good.
The present invention for the technical scheme that solves the problems of the technologies described above employing is:
A kind of electric vehicle charging method for electrically of many battery pack pattern, described electric vehicle charging method for electrically may further comprise the steps:
1) under firm power battery pack is charged, charging current is I
1
2) when detecting the battery pack both end voltage and reach first threshold, charging current is reduced to I
2, continue under firm power, to charge;
3) when detecting the battery pack both end voltage and reach Second Threshold, charging current is reduced to I
3, continuing under firm power, to charge, described Second Threshold is greater than described first threshold;
4) when detecting the battery pack both end voltage and reach the 3rd threshold value, described the 3rd threshold value is the rated voltage of battery pack, and described the 3rd threshold value is greater than Second Threshold, and charging is finished.
Further, charge controller is controlled input current and the both end voltage of battery pack in real time by dynamic control model.
Beneficial effect of the present invention is: by the relation of utilizing charging voltage and input current whole charging process is divided into several separate phases, charge efficiency is high.In addition, by the real-time Simulation approach, verify that this charging method is for the fail safe of charging electric vehicle.
Description of drawings
Fig. 1 is many batteries chargings of electric automobile modular system structured flowchart.
Fig. 2 is many batteries chargings of electric automobile steps flow chart schematic diagram.
Embodiment
Below in conjunction with drawings and embodiments the present invention is described in further detail.
See figures.1.and.2, a kind of electric vehicle charging method for electrically of many battery pack pattern, described electric vehicle charging method for electrically may further comprise the steps:
1) under firm power battery pack is charged, charging current is I
1
2) when detecting the battery pack both end voltage and reach first threshold, charging current is reduced to I
2, continue under firm power, to charge;
3) when detecting the battery pack both end voltage and reach Second Threshold, charging current is reduced to I
3, continuing under firm power, to charge, described Second Threshold is greater than described first threshold;
4) when detecting the battery pack both end voltage and reach the 3rd threshold value, described the 3rd threshold value is the rated voltage of battery pack, and described the 3rd threshold value is greater than Second Threshold, and charging is finished.
Further, charge controller is controlled input current and the both end voltage of battery pack in real time by dynamic control model.
Structure shown in Figure 1 is many batteries chargings of electric automobile modular system structured flowchart.As shown in FIG., the battery charger of electric automobile is by battery charge controller (10), and battery charger (20) and battery pack (30) consist of.The major function of battery charge controller (10) is the operating state that checks battery pack, and the output control signal is adjusted the charge mode of battery pack (30) in real time.The major function of battery charger (20) is that outside input AC electricity (AC) is converted into direct current (DC) output.In addition, when switch S is in opening, the direct current that battery charger is exported will form the closed-loop path, realize the charging to battery pack.
Next we are described designed many batteries chargings of the electric automobile embodiment of the present invention in conjunction with Fig. 1-2.Fig. 2 is many batteries chargings of electric automobile steps flow chart schematic diagram, the vehicle of driving as the electric automobile user exhausts when casting anchor because of the energy content of battery on road, the user can access to the charging plug of battery pack output interchange (AC) power supply and Closing Switch S, the conducting charging circuit is realized the charge function to battery pack.In this process, the charge step s20 place of batteries charging controller (10) in Fig. 2 will identify the initial state of charge (SOC) of battery pack, and sending a control signal to battery charger (20), indication mechanism is charged to battery pack (30).
Preferably, the user can be converted into by the rectifier (21) in the battery charger (20) direct current output to the three-phase alternating current of electric automobile input.Output DC remains on 5.4kW to the charge power of battery pack among the charge step s10.Simultaneously, charge step s20 requires battery charge controller (10) also will carry out Real Time Monitoring to the charging voltage at battery pack two ends.
When each battery pack subelement two ends charging voltage reaches 14.7V simultaneously, or any subelement voltage max of battery pack (30) is when reaching 15.0V, charge shown in the s30 such as Fig. 2, battery charge controller this moment (10) will send charging instruction to charging converter (20), and charging converter receives that will change the direct current of exporting 11A after the charging instruction charges to battery pack.After charge controller execution in step s40, when the battery pack both end voltage reaches 14.8V, or the voltage max of battery pack norator unit is when reaching 15.1V, charge controller this moment (10) will send instruction again to charging converter (20), the latter receives that this instruction is decreased to 7.6A with switching current battery pack is charged, shown in the step s50 among the visible Fig. 2 of this charging process.
Preferably, above batteries charging step is reciprocation cycle.As shown in Figure 2, when the battery pack both end voltage reaches for the first time 14.8V or its subelement voltage and reaches 15.1V, charging converter will be exported direct current 7.6A first to batteries charging, be the step s60 shown in Fig. 2.After this charge step, charge controller (10) will send instruction again to charging converter (20), and this process i.e. step s80 as shown in Figure 2.Charging converter will further be decreased to switching current 3.8A and 2A to batteries charging respectively.Above two charging processes are continuous in time, namely shown in step s70 and s90 among Fig. 2.
Preferably, after the charge step s90 to battery pack finishes, when battery pack (30) both end voltage increases further to that 15.8V or its subelement magnitude of voltage reach 16.1V, charge controller (10) will send new instruction to charging converter, the latter will continue to input constant charging voltage 15.8V battery pack will be charged, and this charge step is shown in s100 among Fig. 2 and s110.
After the charge step s110 among Fig. 2 carries out one hour, when battery pack (30) two ends charging current increases to 16.3V less than 0.2A or battery pack subelement voltage (shown in charge step s120), charge controller (10) will send and stop charging instruction to charging converter, the latter will stop the battery pack input charging voltage, thereby finish whole charging process.
The present invention proposes the many battery pack of a kind of electric automobile based on multi-step (voltage) charging method, it is advantageous that and to reduce to greatest extent between the battery pack subelement phase mutual interference to the impact of whole charging process.Use the energy content of battery effective rate of utilization of this charging method to reach more than 80%.Especially, battery pack receives external electric energy this process of charging and will realize by charge controller fully.Charge controller is controlled input current and the both end voltage of vehicle battery packs in real time by dynamic control model, prevents because overcharging or filling soon the injury of battery own.
Accordingly; above embodiment is the better execution mode of the present invention; but not merely be restricted to the described embodiments, other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify, and all is included within protection scope of the present invention.
Claims (2)
1. the electric vehicle charging method for electrically of battery pack pattern more than a kind, it is characterized in that: described electric vehicle charging method for electrically may further comprise the steps:
1) under firm power battery pack is charged, charging current is I
1
2) when detecting the battery pack both end voltage and reach first threshold, charging current is reduced to I
2, continue under firm power, to charge;
3) when detecting the battery pack both end voltage and reach Second Threshold, charging current is reduced to I
3, continuing under firm power, to charge, described Second Threshold is greater than described first threshold;
4) when detecting the battery pack both end voltage and reach the 3rd threshold value, described the 3rd threshold value is the rated voltage of battery pack, and described the 3rd threshold value is greater than Second Threshold, and charging is finished.
2. the electric vehicle charging method for electrically of many battery pack pattern as claimed in claim 1 is characterized in that: charge controller is controlled input current and the both end voltage of battery pack in real time by dynamic control model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105919314A CN103078372A (en) | 2012-12-29 | 2012-12-29 | Method for charging electric automobile in multi-battery pack mode |
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| CN2012105919314A CN103078372A (en) | 2012-12-29 | 2012-12-29 | Method for charging electric automobile in multi-battery pack mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558897A (en) * | 2015-09-30 | 2017-04-05 | 南京德朔实业有限公司 | Charger and charging method |
| CN106797132A (en) * | 2016-12-28 | 2017-05-31 | 深圳市大疆创新科技有限公司 | Method for charging batteries, charging system, charger and battery |
| WO2017173937A1 (en) * | 2016-04-08 | 2017-10-12 | 华为技术有限公司 | Fast charging method, terminal, charger and system |
| WO2021077933A1 (en) * | 2019-10-25 | 2021-04-29 | Oppo广东移动通信有限公司 | Charging control method, charging control device and electronic device |
| CN112737009A (en) * | 2020-12-14 | 2021-04-30 | 深圳市苏仁智能科技有限公司 | Intelligent charging method and mobile terminal for realizing intelligent charging |
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| CN101611525A (en) * | 2007-02-19 | 2009-12-23 | 松下电器产业株式会社 | Charging system, charging device and battery component |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558897A (en) * | 2015-09-30 | 2017-04-05 | 南京德朔实业有限公司 | Charger and charging method |
| EP3151330A1 (en) * | 2015-09-30 | 2017-04-05 | Chervon (HK) Limited | Charger and charging method |
| CN110289668A (en) * | 2016-04-08 | 2019-09-27 | 华为技术有限公司 | A kind of method of quick charge, terminal, charger and system |
| WO2017173937A1 (en) * | 2016-04-08 | 2017-10-12 | 华为技术有限公司 | Fast charging method, terminal, charger and system |
| CN110212599A (en) * | 2016-04-08 | 2019-09-06 | 华为技术有限公司 | A kind of method of quick charge, terminal, charger and system |
| US10734830B2 (en) | 2016-04-08 | 2020-08-04 | Huawei Technologies Co., Ltd. | Fast changing method and system, terminal, and charger |
| CN110289668B (en) * | 2016-04-08 | 2022-03-08 | 华为技术有限公司 | Quick charging method, terminal, charger and system |
| CN110212599B (en) * | 2016-04-08 | 2022-12-27 | 华为技术有限公司 | Quick charging method, terminal, charger and system |
| US11581745B2 (en) | 2016-04-08 | 2023-02-14 | Huawei Technologies Co., Ltd. | Fast charging method and system, terminal, and charger |
| US11990774B2 (en) | 2016-04-08 | 2024-05-21 | Huawei Technologies Co., Ltd. | Fast charging method and system, terminal, and charger |
| CN106797132B (en) * | 2016-12-28 | 2019-08-16 | 深圳市大疆创新科技有限公司 | Method for charging batteries, charging system, charger and battery |
| CN106797132A (en) * | 2016-12-28 | 2017-05-31 | 深圳市大疆创新科技有限公司 | Method for charging batteries, charging system, charger and battery |
| WO2021077933A1 (en) * | 2019-10-25 | 2021-04-29 | Oppo广东移动通信有限公司 | Charging control method, charging control device and electronic device |
| CN112737009A (en) * | 2020-12-14 | 2021-04-30 | 深圳市苏仁智能科技有限公司 | Intelligent charging method and mobile terminal for realizing intelligent charging |
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Application publication date: 20130501 |