CN110549908B - Charging control method of nickel-metal hydride storage battery pack for railway vehicle - Google Patents
Charging control method of nickel-metal hydride storage battery pack for railway vehicle Download PDFInfo
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- CN110549908B CN110549908B CN201910778336.3A CN201910778336A CN110549908B CN 110549908 B CN110549908 B CN 110549908B CN 201910778336 A CN201910778336 A CN 201910778336A CN 110549908 B CN110549908 B CN 110549908B
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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
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/15—Preventing overcharging
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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
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a charging control method of a nickel-metal hydride storage battery pack for a railway vehicle, and I records SOC 0 、T 0_max 、T 0_min II, recording SOC at the current time at intervals 1 、T 1_max 、T 1_min When the SOC is 1 －SOC 0 When the value is more than or equal to a preset value A, III calculates the delta V max 、△V min And recording the larger value as delta V, if delta V is more than or equal to K, disconnecting the charging relay and correspondingly replacing the SOC 0 、T 0_max 、T 0_min After the battery pack is discharged for a certain time, closing the charging relay and repeating the step II; if DeltaV is less than K, SOC is replaced correspondingly 0 、T 0_max 、T 0_min And (4) continuing to execute the step II. The method has simple and feasible process and better controllability, can ensure that the battery pack has enough charge capacity under the conditions of abnormal voltage acquisition of the battery management system and failure of charger control, and has better safety in the charging process.
Description
Technical Field
The invention relates to a charging control method of a nickel-metal hydride storage battery pack for a railway vehicle.
Background
In the application of a nickel-metal hydride storage battery pack (hereinafter, referred to as a battery pack for short) in the field of rail vehicles, the battery pack can be continuously charged and discharged along with the use of the vehicles, but sometimes the situations of no communication between a charger and a Battery Management System (BMS), failure of the charger control, abnormal voltage acquisition of the battery management system and the like occur, under the situation, the battery pack is easy to be overcharged during charging, the temperature of the battery pack is too high, and the like, so that the use performance and the service life of the battery pack are affected, and even the battery pack is directly scrapped and cannot be normally used. In order to solve the problem, the battery can not only effectively ensure sufficient electric quantity of the battery, but also ensure the safety of the battery, which becomes a current problem.
Disclosure of Invention
The invention aims to provide the charging control method of the nickel-hydrogen storage battery pack for the railway vehicle, which has simple and feasible process, can effectively keep the charge capacity of the battery pack under the condition of failure control of a charger and has better safety.
The invention is realized by the following scheme:
a charging control method of a nickel-metal hydride storage battery pack for a railway vehicle is carried out according to the following steps:
i when a battery management system is powered on, recording the battery pack charge SOC at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min And ambient temperature T 0_ Ring ；
II, in the running process of the vehicle, the battery management system is arranged at intervals of a certain time t Partition Recording battery pack charge SOC at one time 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min And ambient temperature T 1_ Ring And comparing the SOC 1 －SOC 0 When difference of (1) as SOC 1 －SOC 0 When the value is more than or equal to a preset value A, executing a step III;
III, respectively calculating the temperature rise change rate delta V of the highest temperature of the battery pack according to formulas (1) and (2) max Temperature rise change rate delta V of the lowest temperature of the battery pack min ，
△V max ＝(T 1_max －T 0_max )/(SOC 1 －SOC 0 )………………………………(1)，
△V min ＝(T 1_min －T 0_min )/(SOC 1 －SOC 0 )………………………………(2)，
Taking Delta V max 、△V min The larger value of the sum is marked as delta V, if delta V is more than or equal to K, K is T 1_ Ring If the corresponding temperature change rate specified value is met, the charging relay is disconnected, the charging is stopped, and the SOC of the battery pack at the current moment is measured 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min The value of (1) corresponds to the battery pack charge at the initial momentSOC 0 Maximum temperature T of battery pack 0_max Minimum temperature T of battery pack 0_min A value of (d), discharging the battery pack for a certain time t Put Then, the charging relay is closed again and the step II is executed;
if delta V is less than K, the charge quantity SOC of the battery pack at the current moment is judged 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min The value of (1) is corresponding to the battery pack charge SOC at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min And (4) continuing to execute the step II.
In the step II, the preset value A is 2-5%.
In said step III, T 1_ Ring The corresponding temperature change rate specification value K is obtained by looking up a correspondence table of the ambient temperature and the temperature change rate specification value stored in advance in the battery management system. The corresponding table of the ambient temperature and the specified value of the temperature change rate can be obtained according to a plurality of tests in a laboratory, and the specific steps are as follows: the method comprises the steps of discharging the electric quantity of a battery pack, placing the battery pack at a certain environmental temperature, charging the battery pack by adopting a constant current until the battery pack is fully charged, and recording the charged electric quantity SOC of the battery pack 0 The highest temperature T of the battery pack at 85-90% 0-max Minimum temperature T of battery pack 0-min And recording the charge SOC of the battery pack 1 The highest temperature T of the battery pack is 95-100% 1_max Minimum temperature T of battery pack 1_min Calculating (T) 1_max －T 0_max )/(SOC 1 －SOC 0 ) And (T) 1_min －T 0_min )/(SOC 1 －SOC 0 ) And taking the larger value of the two as a specified value of the temperature change rate corresponding to the environmental temperature; and changing the ambient temperature, and acquiring temperature change rate specified values corresponding to different ambient temperatures according to the same method.
In the step II, the time t is separated Partition wall Is 5-15 min; in the step III, the discharge time t of the battery pack Placing the Is 15-45 min.
The charging control method of the nickel-hydrogen storage battery pack for the railway vehicle has the advantages of simple and feasible process and better controllability, can ensure that the battery pack has enough charge capacity under the conditions of abnormal voltage acquisition of a battery management system and failure control of a charger, has better safety in the charging process, and avoids the danger of fire caused by high temperature of the battery pack due to overcharge of the battery pack at low temperature and the like.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A charging control method of a nickel-metal hydride storage battery pack for a railway vehicle is carried out according to the following steps:
i when a battery management system is powered on, recording the battery pack charge SOC at the initial moment 0 Maximum temperature T of battery pack 0_max Minimum temperature T of battery pack 0_min And the ambient temperature T 0_ Ring ；
II, in the running process of the vehicle, the battery management system is arranged at intervals of a certain time t Partition Battery pack charge SOC recording current moment once 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min And ambient temperature T 1_ Ring And compare the SOC 1 －SOC 0 Difference of (d), interval time t Partition wall Taking values in 5-15 min; when the SOC is 1 －SOC 0 When the preset value A is more than or equal to the preset value A, taking the value of the preset value A from 2 to 5 percent, and executing the step III;
III, respectively calculating the temperature rise change rate delta V of the highest temperature of the battery pack according to the formulas (1) and (2) max Temperature rise change rate delta V of minimum temperature of battery pack min ，
△V max ＝(T 1_max －T 0_max )/(SOC 1 －SOC 0 )………………………………(1)，
△V min ＝(T 1_min －T 0_min )/(SOC 1 －SOC 0 )………………………………(2)，
Taking Delta V max 、△V min The larger value of the sum is recorded as delta V, if delta V is more than or equal to K, K is T 1_ Ring Corresponding temperatureRate of change specification value, T 1_ Ring If the corresponding temperature change rate specified value K is obtained by checking a corresponding table of the environmental temperature and the temperature change rate specified value stored in the battery management system in advance, the charging relay is disconnected, the charging is stopped, and the current battery pack charge SOC is used 1 Maximum temperature T of battery pack 1_max Minimum temperature T of battery pack 1_min The value of (A) is corresponding to the charge amount SOC of the battery pack at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min Value of (d), discharging the battery pack for a certain time t Put After that, the battery pack is discharged for a time t Put Closing the charging relay again and executing the step II when the time is 15-45 min;
if delta V is less than K, the charge quantity SOC of the battery pack at the current moment is judged 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min The value of (1) is corresponding to the battery pack charge SOC at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min And (4) continuing to execute the step II.
Claims (4)
1. A charging control method of a nickel-metal hydride storage battery pack for a railway vehicle is characterized by comprising the following steps: the method comprises the following steps:
i when a battery management system is powered on, recording the battery pack charge SOC at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min And ambient temperature T 0_ Ring ；
II, in the running process of the vehicle, the battery management system is arranged at intervals of a certain time t Partition Recording battery pack charge SOC at one time 1 Maximum temperature T of battery pack 1_max Minimum temperature T of battery pack 1_min And the ambient temperature T 1_ Ring And compare the SOC 1 －SOC 0 Difference of (d) when SOC 1 －SOC 0 When the value is more than or equal to a preset value A, executing a step III;
III, respectively calculating the temperature rise change rate delta V of the highest temperature of the battery pack according to the formulas (1) and (2) max Temperature rise of the lowest temperature of the battery packRate of change DeltaV min ，
△V max ＝(T 1_max －T 0_max )/(SOC 1 －SOC 0 )………………………………(1)，
△V min ＝(T 1_min －T 0_min )/(SOC 1 －SOC 0 )………………………………(2)，
Taking Delta V max 、△V min The larger value of the sum is marked as delta V, if delta V is more than or equal to K, K is T 1_ Ring If the corresponding temperature change rate specified value is reached, the charging relay is disconnected, the charging is stopped, and the current battery pack charge SOC is obtained 1 Maximum temperature of battery pack T 1_max Minimum temperature T of battery pack 1_min The value of (1) is corresponding to the battery pack charge SOC at the initial moment 0 Maximum temperature of battery pack T 0_max Minimum temperature T of battery pack 0_min Value of (d), discharging the battery pack for a certain time t Placing the Then, closing the charging relay again and executing the step II;
if delta V is less than K, the charge quantity SOC of the battery pack at the current moment is judged 1 Maximum temperature T of battery pack 1_max Minimum temperature T of battery pack 1_min The value of (1) is corresponding to the battery pack charge SOC at the initial moment 0 Maximum temperature T of battery pack 0_max Minimum temperature T of battery pack 0_min Continues with step ii.
2. The charge control method of a nickel-metal hydride storage battery pack for a railway vehicle as claimed in claim 1, wherein: in the step II, the preset value A is 2-5%.
3. The charge control method of a nickel-metal hydride storage battery pack for a railway vehicle as claimed in claim 1, characterized in that: in said step III, T 1_ Ring The corresponding temperature change rate specification value K is obtained by looking up a correspondence table of the ambient temperature and the temperature change rate specification value stored in advance in the battery management system.
4. As claimed in claim1 to 3, the method for controlling charging of a nickel-metal hydride storage battery pack for a railway vehicle, comprising: in the step II, the time t is separated Partition Is 5 to 15min; in the step III, the discharge time t of the battery pack Put Is 15-45 min.
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| CN201910778336.3A CN110549908B (en) | 2019-08-22 | 2019-08-22 | Charging control method of nickel-metal hydride storage battery pack for railway vehicle |
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| CN201910778336.3A CN110549908B (en) | 2019-08-22 | 2019-08-22 | Charging control method of nickel-metal hydride storage battery pack for railway vehicle |
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| CN110549908B true CN110549908B (en) | 2022-10-14 |
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| JP2009059504A (en) * | 2007-08-30 | 2009-03-19 | Sony Corp | Battery pack, and control method |
| CN104145400A (en) * | 2012-02-29 | 2014-11-12 | Nec能源元器件株式会社 | Battery control system, battery pack, electronic device, and charger |
| CN105680541A (en) * | 2016-03-28 | 2016-06-15 | 西安特锐德智能充电科技有限公司 | Charging method for low-temperature charging strategy |
| CN107069118A (en) * | 2016-12-26 | 2017-08-18 | 惠州市蓝微新源技术有限公司 | SOC modification method under a kind of cryogenic conditions |
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| JP5089883B2 (en) * | 2005-12-16 | 2012-12-05 | 日立ビークルエナジー株式会社 | Battery management device |
| US10641832B2 (en) * | 2015-09-15 | 2020-05-05 | Toyota Jidosha Kabushiki Kaisha | Battery pack unit testing method and testing apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009059504A (en) * | 2007-08-30 | 2009-03-19 | Sony Corp | Battery pack, and control method |
| CN104145400A (en) * | 2012-02-29 | 2014-11-12 | Nec能源元器件株式会社 | Battery control system, battery pack, electronic device, and charger |
| CN105680541A (en) * | 2016-03-28 | 2016-06-15 | 西安特锐德智能充电科技有限公司 | Charging method for low-temperature charging strategy |
| CN107069118A (en) * | 2016-12-26 | 2017-08-18 | 惠州市蓝微新源技术有限公司 | SOC modification method under a kind of cryogenic conditions |
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