CN107539151B - Charging and battery-replacing integrated power battery system, working method and application - Google Patents
Charging and battery-replacing integrated power battery system, working method and application Download PDFInfo
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- CN107539151B CN107539151B CN201710776221.1A CN201710776221A CN107539151B CN 107539151 B CN107539151 B CN 107539151B CN 201710776221 A CN201710776221 A CN 201710776221A CN 107539151 B CN107539151 B CN 107539151B
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a power battery system integrating charging and battery replacing, a working method and application thereof, comprising a fixed power battery pack and at least one battery replacing power battery pack, wherein the power output ends of the fixed power battery pack and the battery replacing power battery pack are both connected to the power input end of a driving motor and are simultaneously connected to the power input end of an auxiliary power supply through a DCDC module, the power output end of the auxiliary power supply is respectively connected to the power input ends of a fixed power battery management system, the battery replacing power battery management system and a main controller, the main controller is respectively in information interaction with the fixed power battery management system, the battery replacing power battery management system and the DCDC module, the fixed power battery management system is in information interaction with the fixed power battery pack, the battery replacing power battery management system is in information interaction with the battery replacing power battery pack, and the rapid power supplement or the capacity expansion of the battery pack of an electric automobile is realized, the electric automobile mileage is promoted, mileage anxiety is alleviated, and driving experience is promoted.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a charging and battery-replacing integrated power battery system, a working method and application thereof.
Background
Soc (state of charge) refers to the state of charge of the battery, and is used to indicate the value of the battery capacity, and is generally expressed in percentage; because the electric automobile adopts the power device different from the traditional fuel vehicle, the inner space of the electric automobile has advantages compared with the traditional automobile, for example, automobiles such as Tesla have a large storage space.
The existing pure electric vehicle is usually provided with a power battery fixedly arranged at the position of a chassis, when the energy of the battery is about to be used up, a user can only select a charging station to charge the power battery, and the driving experience of the electric vehicle can be influenced under the condition of low charging rate. When long-distance travel is needed under special conditions, the charging time of tens of minutes cannot meet the urgent long-distance travel requirement.
Therefore, the prior art has the following problems:
1. the inside of the electric automobile is only provided with one power battery pack, and a user cannot expand the capacity of the power battery pack;
2. when the residual electric quantity of the electric automobile is low, a user cannot quickly complete power supplement.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a power battery system with integrated charging and battery replacing functions and an electric vehicle having the same, wherein a replaceable power battery pack is added to an existing pure electric vehicle, so as to increase the energy range of the electric vehicle. .
In order to achieve the purpose, the invention adopts the technical scheme that the power battery system integrating charging and battery replacing comprises a fixed power battery pack and at least one battery replacing power battery pack, the power output ends of the fixed power battery pack and the battery replacing power battery pack are both connected to the power input end of a driving motor, the power output ends of the fixed power battery pack and the battery replacing power battery pack are also connected to the power input end of an auxiliary power supply through a DCDC module, the power output end of the auxiliary power supply is respectively connected to the power input ends of a fixed power battery management system, a battery replacing power battery management system and a main controller, the main controller is respectively connected with the fixed power battery management system, the method comprises the following steps of information interaction of a battery replacement power battery management system and a DCDC module, information interaction of a fixed power battery management system and a fixed power battery pack, and information interaction of the battery replacement power battery management system and the battery replacement power battery pack.
The main controller is used for monitoring the discharge power of the fixed power battery pack and the battery replacement power battery pack and judging the comparison of the discharge state of the power battery, the SOC value and the threshold value.
The fixed power battery pack is fixedly arranged on the electric automobile, and the battery replacing power battery pack is detachably arranged in the electric automobile.
At least one anti-reverse diode is arranged in the discharge circuit of the fixed power battery pack and the battery replacement power battery pack.
The fixed power battery management system is in communication connection with the fixed power battery pack and is used for controlling the charging mode selection of the fixed power battery pack, acquiring SOC information of the fixed power battery pack in the charging and discharging processes and identifying the fault state of the fixed power battery pack;
the battery replacement power battery management system is in communication connection with the battery replacement power battery pack and is used for controlling the charging mode selection of the battery replacement power battery pack, acquiring battery parameters of the battery replacement power battery pack in the charging and discharging processes and identifying the fault state of the battery replacement power battery pack.
The invention also provides a working method of the charging and battery-replacing integrated power battery system, which comprises the following steps:
s1, starting the vehicle;
s2, the main controller identifies the number of BMSs in normal online and judges the number of available power battery packs;
s3, when the number of the available power battery packs is more than or equal to 2, the main controller issues a discharge command and preferentially uses the fixed power battery packs for discharging;
s4 start discharging;
s5 the main controller compares the SOC of the fixed power battery with the threshold X1, when the SOC is less than or equal to the threshold X1, the user is prompted about the electric quantity information of the battery, and the power battery is switched into the step S6, and the battery replacement set is switched into the main power loop to discharge, and the step is circulated until the SOC of all the power battery sets is less than or equal to the threshold X1;
s6 the main controller compares the SOC of the power battery pack with the threshold value X2, when the SOC of a certain power battery pack is less than or equal to the threshold value X2, the power battery pack stops discharging, and the user is prompted about the electric quantity information; when the SOC of all the power battery packs is less than or equal to the threshold value X2, the step S7 is executed;
s7, the main controller controls the power battery pack to stop discharging, and prompts a user to replace or charge the battery;
in step S2, when there is one available power battery pack, the single power battery mode is directly entered, and the following steps are as follows:
s31, the main controller controls the power battery pack to discharge, and monitors the discharge power of the electrodynamic force battery pack in real time;
s41, the main controller compares the SOC of the power battery pack with a threshold value X1, if the SOC is larger than the threshold value X1, discharging is continued, and the step is circulated; if the current value is less than or equal to the threshold value X1, the step S51 is executed, and the user is prompted with the electric quantity information of the power battery pack;
s51 the main controller compares the SOC of the available electric power battery pack with the threshold value X2, if the SOC is larger than the threshold value X2, the discharging is continued and the step is circulated; if the current power is less than or equal to the threshold value X2, the method proceeds to step S7, and the user is prompted for the power information.
In step S2, the available power battery pack is determined based on the data of the power battery pack being normal, and the discharge condition can be satisfied and the SOC value is greater than or equal to X1.
The normal battery pack data refers to data values of various pieces of parameter information of the power battery pack, which are acquired by the BMS, meeting the driving state of the vehicle.
Threshold X2< X1.
The discharging power of each battery pack during discharging meets the power P1 required by the motor, in the discharging process, the main controller monitors whether the discharging power P of each discharging power battery pack is larger than or equal to the maximum power P1 required by the running of the vehicle, and when the discharging power of any one power battery is lower than the power P1 required by the vehicle, the main controller immediately stops the discharging of the power battery pack on the road and prompts a user of the information.
The BMS number and the power battery pack number are all positive integers.
The invention also provides an electric automobile adopting the charging and battery-replacing integrated power battery system.
Compared with the prior art, the invention has at least the following beneficial effects: through setting up fixed power battery group and trading electric power battery group, realize electric automobile's quick benefit electricity or the dilatation of power battery group, promote electric automobile mileage of traveling, alleviate mileage anxiety, promote to drive and take experience.
At least one anti-reverse diode is arranged in the discharge circuit of the fixed power battery pack and the battery replacement power battery pack, so that the circulation current can be effectively prevented.
In the working method, the fixed power lithium battery pack is preferentially used for discharging, when the SOC of the fixed power lithium battery pack is smaller than a threshold value X1, the fixed power lithium battery pack is switched to the battery replacement power battery pack for discharging, and the power battery pack with low electric quantity can be stopped from continuously discharging in time by setting the threshold values X1 and X2, so that the service life of the battery is prolonged.
Drawings
Fig. 1 is an internal connection diagram of the present battery system.
Fig. 2 is a flow chart of the operation of the present battery system.
In the drawings: BMS 1-fixed power battery management system, BMS 2-battery replacement power battery management system.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in FIG. 1, the integrated charging and battery-replacing power battery system of the invention comprises a fixed power battery pack and at least one battery-replacing power battery pack, wherein the power output ends of the fixed power battery pack and the battery-replacing power battery pack are both connected to the power input end of a driving motor, the power output ends of the fixed power battery pack and the battery-replacing power battery pack are also connected to the power input end of an auxiliary power supply through a DCDC module, the power output end of the auxiliary power supply is respectively connected to the power input ends of a fixed power battery management system BMS1, a battery-replacing power battery management system BMS2 and a main controller, the main controller is respectively in information interaction with the fixed power battery management system BMS1, the battery-replacing power battery management system BMS2 and the DCDC module, the fixed power battery management system BMS1 is in information interaction with the fixed power battery pack, the battery-replacing power management system BMS2 is, wherein;
a main controller: monitoring the discharge power of each discharge battery, and judging the comparison between the discharge state and the SOC value of the power battery and a threshold value;
the main controller is connected with the fixed power battery management system and the power-changing power battery management system;
the fixed power battery pack is fixedly arranged on the electric automobile and used for providing energy for the driving motor;
the battery pack is mounted on the body of the electric automobile in a portable detachable mounting mode;
in a preferred embodiment of the invention, the battery pack is arranged at a trunk of the vehicle, a head part of the vehicle or a rear seat in the vehicle;
protecting at least one anti-reverse diode on a discharge circuit of the fixed power battery pack and the battery replacement power battery pack;
the fixed power battery management system is used for being in communication connection with the fixed power battery pack and controlling the charging mode selection of the power battery pack; acquiring the SOC of the power battery in the charging and discharging processes; identifying a fault condition of the stationary battery pack;
the battery replacement power battery management system is in communication connection with the battery replacement power battery pack and controls the charging mode selection of the battery replacement power battery pack; acquiring battery parameters of a power battery in the charging and discharging processes; identifying a fault condition of the stationary battery pack;
the fixed power battery pack and the battery replacement power battery pack are respectively in power connection with the driving motor;
the auxiliary power supply is in power connection with the main controller, the fixed power battery management system and the battery replacement power battery management system and provides electric energy for the main controller, the fixed power battery management system and the battery replacement power battery management system;
the fixed power battery pack and the battery replacement power battery pack supply power for the auxiliary power supply through the DC/DC conversion device, and after the electric automobile is started, the main controller starts the DCDC conversion device according to the charge State (SOC) of the batteries of the fixed power battery pack and the battery replacement power battery pack to charge the auxiliary power supply, so that the auxiliary power supply is in a charge state, and the electric energy supply of a control system and each battery management system is ensured.
As shown in fig. 2, the working flow of the present invention is as follows:
s1, starting the vehicle;
s2, the main controller identifies the number of BMSs in normal online and judges the number of available power battery packs;
s3, when the number of the available power battery packs is more than or equal to 2, the main controller issues a discharge command and preferentially uses the fixed power battery packs for discharging;
s4 start discharging;
s5 the main controller compares the SOC of the fixed power battery with the threshold X1, when the SOC is less than or equal to the threshold X1, the user is prompted about the electric quantity information of the battery, and the power battery is switched into the step S6, and the battery replacement set is switched into the main power loop to discharge, and the step is circulated until the SOC of all the power battery sets is less than or equal to the threshold X1;
s6 the main controller compares the SOC of the power battery pack with the threshold value X2, when the SOC of a certain power battery pack is less than or equal to the threshold value X2, the power battery pack stops discharging, and the user is prompted about the electric quantity information; when the SOC of all the power battery packs is less than or equal to the threshold value X2, the step S7 is executed;
and S7, the main controller controls the power battery pack to stop discharging, and prompts a user to replace or charge the battery.
When there is one available power battery pack in step S2, directly enter the single power battery power supply mode, and the following steps are as follows:
s31, the main controller controls the power battery pack to discharge, and monitors the discharge power of the electrodynamic force battery pack in real time;
s41, the main controller compares the SOC of the power battery pack with a threshold value X1, if the SOC is larger than the threshold value X1, discharging is continued, and the step is circulated; if the current value is less than or equal to the threshold value X1, the step S51 is executed, and the user is prompted with the electric quantity information of the power battery pack;
s51 the main controller compares the SOC of the available electric power battery pack with the threshold value X2, if the SOC is larger than the threshold value X2, the discharging is continued and the step is circulated; if the current power is less than or equal to the threshold value X2, the method proceeds to step S7, and the user is prompted for the power information.
In step S2, the available power battery pack is judged according to that the data of the power battery pack is normal, the discharging condition can be satisfied, and the SOC value is greater than or equal to X1, the battery pack data is normal, that is, the parameter information of the power battery pack acquired by the BMS satisfies the data value of the vehicle driving state, and the BMS number and the power battery pack number are all positive integers.
In the invention, the discharge power of each battery pack during discharging meets the power P1 required by the motor, in the discharging process, the main controller monitors whether the discharge power P of each discharge power battery pack is more than or equal to the maximum power P1 required by the running of the vehicle, and when the discharge power of any one power battery is lower than the power P1 required by the vehicle, the main controller immediately stops the discharge of the power battery pack on the road and simultaneously prompts the user of the information.
In the present invention, the threshold value X2< X1, for example X1 is a certain value of 20 to 30%, and X2 is a certain value of 10 to 15%, and the values are preferably set in percentage;
the invention also comprises an automobile which comprises the battery system and the operation process of the battery system.
The flow chart of fig. 2 includes a battery system including a stationary power battery and a power-changing battery, the number of which is not limited, and the flow of the battery system is constrained by the flow chart of fig. 2 regardless of the number of the battery packs.
Claims (9)
1. The working method of the power battery system integrating charging and battery replacing is characterized by comprising the following steps of:
s1, starting the vehicle;
s2, the main controller identifies the number of BMSs in normal online and judges the number of available power battery packs;
s3, when the number of the available power battery packs is more than or equal to 2, the main controller issues a discharge command and preferentially uses the fixed power battery packs for discharging;
s4 start discharging;
s5 the main controller compares the SOC of the fixed power battery with the threshold X1, when the SOC is less than or equal to the threshold X1, the user is prompted about the electric quantity information of the battery, and the power battery is switched into the step S6, and the battery replacement set is switched into the main power loop to discharge, and the step is circulated until the SOC of all the power battery sets is less than or equal to the threshold X1;
s6 the main controller compares the SOC of the power battery pack with the threshold value X2, when the SOC of a certain power battery pack is less than or equal to the threshold value X2, the power battery pack stops discharging, and the user is prompted about the electric quantity information; when the SOC of all the power battery packs is less than or equal to the threshold value X2, the step S7 is executed;
s7, the main controller controls the power battery pack to stop discharging, and prompts a user to replace or charge the battery;
in step S2, when there is one available power battery pack, the single power battery mode is directly entered, and the following steps are as follows:
s31, the main controller controls the power battery pack to discharge, and monitors the discharge power of the electrodynamic force battery pack in real time;
s41, the main controller compares the SOC of the power battery pack with a threshold value X1, if the SOC is larger than the threshold value X1, discharging is continued, and the step is circulated; if the current value is less than or equal to the threshold value X1, the step S51 is executed, and the user is prompted with the electric quantity information of the power battery pack;
s51 the main controller compares the SOC of the available electric power battery pack with the threshold value X2, if the SOC is larger than the threshold value X2, the discharging is continued and the step is circulated; if the current power is less than or equal to the threshold value X2, the step S7 is entered, and the user is prompted with the power information;
in step S2, the available power battery pack is determined based on the fact that the data of the power battery pack is normal, the discharging condition can be satisfied, and the SOC value is greater than or equal to X1;
the normal battery pack data refers to data values of various pieces of parameter information of the power battery pack, which are acquired by the BMS, meeting the driving state of the vehicle.
2. The method of operation of claim 1 wherein the threshold X2< X1.
3. The operating method of claim 1, wherein during the discharging process, the main controller monitors whether the discharging power P of each discharging power battery pack is greater than or equal to the maximum power P1 required by the vehicle running, and when the discharging power of any one power battery is lower than the maximum power P1 required by the vehicle running, the main controller immediately stops the discharging of the power battery pack and prompts the user for the information.
4. The operating method according to claim 1, wherein the BMS number and the power battery pack number are all positive integers.
5. A charging and battery-replacing integrated power battery system for realizing the working method of any one of claims 1 to 4, which comprises a fixed power battery pack and at least one battery-replacing power battery pack, wherein the power output ends of the fixed power battery pack and the battery-replacing power battery pack are both connected to the power input end of a driving motor, the power output ends of the fixed power battery pack and the battery-replacing power battery pack are also connected to the power input end of an auxiliary power supply through a DCDC module, the power output end of the auxiliary power supply is respectively connected to the power input ends of a fixed power battery management system (BMS1), a battery-replacing power battery management system (BMS2) and a main controller, the main controller respectively interacts with information of the fixed power battery management system (BMS1), the battery-replacing power battery management system (BMS2) and the DCDC module, the fixed power battery management system (BMS1) interacts with information of the fixed power battery pack, the battery replacement power management system (BMS2) is in information interaction with the battery replacement power pack;
the main controller is used for monitoring the discharge power of the fixed power battery pack and the battery replacement power battery pack and judging the comparison of the discharge state of the power battery, the SOC value and the threshold value.
6. The charging and battery-replacing integrated power battery system according to claim 5, wherein the fixed power battery pack is fixedly installed on the electric automobile, and the battery-replacing integrated power battery pack is detachably installed in the electric automobile.
7. The charging and battery-swapping integrated power battery system of claim 5, wherein at least one anti-reverse diode is installed in the discharge circuit of the fixed power battery pack and the swapping power battery pack.
8. The charging and battery-replacing integrated power battery system as claimed in claim 5, wherein the fixed power battery management system (BMS1) is in communication connection with the fixed power battery pack and is used for controlling the charging mode selection of the fixed power battery pack, acquiring the SOC information of the fixed power battery pack during the charging and discharging processes and identifying the fault state of the fixed power battery pack;
the battery replacing power management system (BMS2) is in communication connection with the battery replacing power battery pack and is used for controlling the charging mode selection of the battery replacing power battery pack, acquiring the battery parameters of the battery replacing power battery pack in the charging and discharging processes and identifying the fault state of the battery replacing power battery pack.
9. Use of the charging-and-swapping integrated power cell system of any of claims 5 to 8 in an electric vehicle.
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| CN107444176B (en) * | 2017-08-31 | 2021-12-07 | 西安特锐德智能充电科技有限公司 | Charging and battery-replacing integrated power battery system, working method and application thereof |
| CN107599858B (en) * | 2017-08-31 | 2021-01-29 | 西安特锐德智能充电科技有限公司 | Power battery system integrating charging and battery replacing, working method and application |
| CN108394288B (en) * | 2018-01-09 | 2022-02-15 | 蔚来(安徽)控股有限公司 | Charging device for direct current charging of electric automobile |
| CN108749617B (en) * | 2018-06-11 | 2020-03-24 | 浙江衡远新能源科技有限公司 | Replaceable battery control system of electric automobile |
| CN109649213B (en) * | 2018-11-22 | 2020-06-12 | 西安电子科技大学芜湖研究院 | Open battery power distribution management system |
| CN109606193B (en) * | 2018-12-17 | 2020-08-25 | 北京国网普瑞特高压输电技术有限公司 | Electric vehicle charging and discharging control system and control method based on energy internet mode |
| CN110077276B (en) * | 2019-04-24 | 2020-04-03 | 东风汽车集团有限公司 | Expandable power supply quick-change system and method for pure electric vehicle |
| CN110053489A (en) * | 2019-04-30 | 2019-07-26 | 东莞市森菲环保科技有限公司 | A kind of energy-storage system and its control method of automobile |
| CN113022329A (en) * | 2020-12-23 | 2021-06-25 | 杭州伯坦新能源科技有限公司 | Intelligent multi-type battery hybrid energy system and energy supply method |
| CN114132222A (en) * | 2022-01-19 | 2022-03-04 | 上海比耐信息科技有限公司 | Hybrid power supply system for electric vehicle, control method of hybrid power supply system and electric vehicle |
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| SG11201406940YA (en) * | 2012-04-27 | 2014-11-27 | California Inst Of Techn | An imbedded chip for battery applications |
| CN106740206B (en) * | 2015-02-09 | 2020-07-21 | 浙江吉利汽车研究院有限公司 | Quick-changing method and system for battery pack of electric vehicle |
| CN205017074U (en) * | 2015-10-20 | 2016-02-03 | 西安特锐德智能充电科技有限公司 | Machine that charges that possesses initiative safeguard function |
| CN105207304B (en) * | 2015-10-20 | 2017-06-20 | 西安特锐德智能充电科技有限公司 | A kind of charging method for possessing active defense function |
| CN106785237B (en) * | 2016-11-30 | 2023-09-08 | 惠州市蓝微新源技术有限公司 | Power battery thermal management method and system |
| CN107444176B (en) * | 2017-08-31 | 2021-12-07 | 西安特锐德智能充电科技有限公司 | Charging and battery-replacing integrated power battery system, working method and application thereof |
| CN207725234U (en) * | 2017-08-31 | 2018-08-14 | 西安特锐德智能充电科技有限公司 | The electrokinetic cell system and electric vehicle of charging and conversion electric one |
| CN107599858B (en) * | 2017-08-31 | 2021-01-29 | 西安特锐德智能充电科技有限公司 | Power battery system integrating charging and battery replacing, working method and application |
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Application publication date: 20180105 Assignee: Xi'an teride lingchong New Energy Technology Co.,Ltd. Assignor: Xi'an TGOOD Intelligent Charging Technology Co.,Ltd. Contract record no.: X2020370010026 Denomination of invention: Power battery system, working method and Application License type: Common License Record date: 20201130 |
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Address after: 710065 R&D Building E206-2, E Building, No. 211 Tiangu Eighth Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Telai Intelligent Charging Technology Co.,Ltd. Address before: 710065 R&D Building E206-2, E Building, No. 211 Tiangu Eighth Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: XI'AN TGOOD INTELLIGENT CHARGING TECHNOLOGY Co.,Ltd. |