CN111044915A - Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof - Google Patents
Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof Download PDFInfo
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- CN111044915A CN111044915A CN201910557992.0A CN201910557992A CN111044915A CN 111044915 A CN111044915 A CN 111044915A CN 201910557992 A CN201910557992 A CN 201910557992A CN 111044915 A CN111044915 A CN 111044915A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
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Abstract
The invention relates to the technical field of power supply control, in particular to a storage battery capacity control system of a rail transit vehicle-mounted power supply system, which comprises a storage battery, a vehicle-mounted charger, a battery management system and a standard resistor, wherein the vehicle-mounted charger is correspondingly connected with the positive electrode and the negative electrode of the storage battery, the standard resistor is connected between the positive electrode end of the storage battery and the positive electrode end of the vehicle-mounted charger in series, a signal acquisition end of the battery management system is respectively connected with two ends of the standard resistor, the positive electrode end of the storage battery is connected with the positive electrode end of a vehicle-mounted load after passing through the standard resistor, and the output end of the battery management system is connected with a PLC (programmable logic controller) control end of the vehicle-mounted charger.
Description
Technical Field
The invention relates to the technical field of power supply control, in particular to a storage battery capacity control system of a rail transit vehicle-mounted power supply system.
Background
With the rapid increase of Chinese economy and the development trend of urbanization, the Chinese high-speed rail and the rail transit have strategic significance as important transportation tools. Especially, the current intellectualization and artificial intelligence progress puts forward higher requirements on the high-speed rail and rail transit technology.
The conventional rail transit vehicle-mounted power supply system does not accurately control the capacity of the storage battery, and generally judges the condition of the storage battery by estimating the change of the output voltage of the storage battery. Since the battery used by the conventional rail transit vehicle is used as a backup battery or an auxiliary power supply, the battery is not a power source for the operation of the vehicle. However, with the AI and intelligent requirements, especially the need for a battery with traction functions: even unmanned; i.e. without any power, the vehicle is towed by the accumulator to the safe place nearest to the accident. Such extreme conditions are of self-concern for accurate control of battery capacity.
The traditional detection method comprises the following steps: monitoring the battery voltage test, has the risk: since the voltage of the battery varies with the age of the battery. In particular, at the end of use (or after aging), the battery reflects that the (detected) voltage is a virtual value and has virtually no capacity.
This is due to the characteristics of the battery: because the internal resistance of the battery increases at the end of the charging, when charging, due to the large internal resistance, U ═ ir; and when the U rises, the charger judges that the storage battery is fully charged by judging the size of the U, namely the charging is stopped, but at the moment, the storage battery is not charged.
Disclosure of Invention
The invention aims to provide a storage battery capacity control system of a rail transit vehicle-mounted power system, which aims to solve the problems that the storage battery capacity cannot be accurately detected and the safe use of the storage battery cannot be ensured in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a track traffic vehicle-mounted power system holds battery capacity control system, includes battery, the vehicle-mounted machine that charges, battery management system and standard resistance, the vehicle-mounted machine that charges corresponds with the battery positive negative pole and is connected, standard resistance establishes ties between battery positive terminal and the vehicle-mounted machine positive terminal, battery management system's signal acquisition end is connected the both ends of standard resistance respectively, and the positive terminal of battery is connected with the vehicle-mounted load positive terminal behind the standard resistance, and battery management system's output and the PLC control end of the vehicle-mounted machine that charges are connected.
Preferably, the storage battery is an on-vehicle storage battery.
Preferably, the vehicle-mounted charger is a 3-400UAV/110VDC inverter.
Preferably, the battery management system comprises a processor, a current collector and a voltage detector, wherein the test ports of the current collector and the voltage detector are connected with the collection ends at the two ends of the standard resistor, the input end of the processor is respectively connected with the signal output ends of the current collector and the voltage detector, and the output end of the processor is respectively connected with the output ends of the vehicle-mounted computer and the vehicle-mounted charger.
Preferably, the battery management system further comprises a time counter communicatively coupled to the input of the processor.
In order to achieve the above purpose, the invention also provides the following technical scheme: a detection method for a rail transit vehicle-mounted power system storage battery capacity control system comprises the following steps:
(1) when the storage battery is normal, the charging current output by the vehicle-mounted charger is stable, the voltage rises slowly, and a theoretical capacity calculation value of the storage battery is obtained through integral calculation;
(2) when the voltage of the battery reaches a preset voltage limit value of the vehicle-mounted charger and is not changed, the storage battery is fully charged;
(3) at the moment, the capacity detector of the storage battery sends a switching value to be output to the vehicle-mounted computer to form a signal;
(4) when the storage battery is abnormal, if the charging current output by the vehicle-mounted charger is not changed but the voltage of the storage battery rises faster, the voltage of the storage battery reaches the limit value of the voltage of the vehicle-mounted charger instantly;
(5) the working state of the vehicle-mounted charger is converted into a floating charging mode, and the charging current of the storage battery is automatically reduced;
(6) processing and calculating the current and the time through a processor to obtain the capacity of the storage battery in a real-time state, and outputting a processing result to a vehicle-mounted computer;
(7) and the working personnel compares the standard values of the storage battery information received by the vehicle-mounted computer and judges and determines the storage battery fault or virtual voltage problem.
Compared with the prior art, the invention has the beneficial effects that: by the essential characteristics of the battery: the real state of the storage battery can be accurately reflected in real time no matter how the internal and external factors change, so that the charging and discharging of the storage battery are controlled, the over-discharging of the storage battery can be protected, and the early failure of the storage battery is avoided. .
Drawings
FIG. 1 is a schematic block diagram of the system of the present invention;
FIG. 2 is a diagram showing the variation state of the charging voltage circuit of the constant voltage charging and charging machine;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a track traffic vehicle-mounted power system battery capacity control system which characterized in that: the vehicle-mounted charger is correspondingly connected with the positive electrode and the negative electrode of the storage battery, the standard resistor is connected between the positive electrode end of the storage battery and the positive electrode end of the vehicle-mounted charger in series, the signal acquisition end of the battery management system is respectively connected with the two ends of the standard resistor, the positive electrode end of the storage battery is connected with the positive electrode end of a vehicle-mounted load after passing through the standard resistor, and the output end of the battery management system is connected with the PLC control end of the vehicle-mounted charger.
The storage battery is a vehicle-mounted storage battery.
The vehicle-mounted charger is a 3-400UAV/110VDC inverter.
The battery management system comprises a processor, a current collector and a voltage detector, wherein test ports of the current collector and the voltage detector are connected with collection ends at two ends of a standard resistor, an input end of the processor is connected with signal output ends of the current collector and the voltage detector respectively, and an output end of the processor is connected with an on-board computer and an output end of an on-board charger respectively.
The battery management system also includes a time counter communicatively coupled to the input of the processor.
As shown in fig. 1 to 2, a method for detecting a battery capacity control system of a rail transit vehicle-mounted power system includes the steps of:
(1) when the storage battery is normal, the charging current output by the vehicle-mounted charger is stable, the voltage rises slowly, and a theoretical capacity calculation value of the storage battery is obtained through integral calculation;
(2) when the voltage of the battery reaches a preset voltage limit value of the vehicle-mounted charger and is not changed, the storage battery is fully charged;
(3) at the moment, the capacity detector of the storage battery sends a switching value to be output to the vehicle-mounted computer to form a signal;
(4) when the storage battery is abnormal, if the charging current output by the vehicle-mounted charger is not changed but the voltage of the storage battery rises faster, the voltage of the storage battery reaches the limit value of the voltage of the vehicle-mounted charger instantly;
(5) the working state of the vehicle-mounted charger is converted into a floating charging mode, and the charging current of the storage battery is automatically reduced;
(6) processing and calculating the current and the time through a processor to obtain the capacity of the storage battery in a real-time state, and outputting a processing result to a vehicle-mounted computer;
(7) and the working personnel compares the standard values of the storage battery information received by the vehicle-mounted computer and judges and determines the storage battery fault or virtual voltage problem.
Through the technical scheme, a vehicle-mounted charger used for rail transit generally charges a storage battery in a constant-voltage current-limiting mode; since the bearing capacity is limited mainly in view of the load on board the vehicle. The charging mode is mainly to judge whether the storage battery is fully charged or not through the output voltage change of the storage battery, namely when the output voltage of the storage battery is not changed to the voltage limiting value of the charger any more, (the output voltage is increased), the charging mode of the charger automatically changes to floating charging (the storage battery is fully charged). However, it is the case that the charging voltage of the battery changes non-linearly when the battery is damaged or as the battery ages. See the formula: u ═ I × R; the charger is according to this formula: the physical quantity, U, voltage, to estimate or estimate the battery capacity. But in practice the physical quantity R to the left of the above formula has changed. When R increases, U becomes larger.
The invention explains the principle that: c ═ a × H; the capacity is current time, and the real condition of the storage battery can be accurately reflected in real time no matter how the internal and external factors change, so that the charging and discharging of the storage battery are controlled, the over-discharging of the storage battery can be protected, and the early failure of the storage battery is avoided.
By detecting the current magnitude of the input/output storage battery (the resistance value of the standard resistor of the upper graph is fixed), combining the voltage change at two ends of the standard resistor, and then by a time counter, the actual A x H value can be accurately calculated: i.e. capacity.
The processor of the battery management system has a memory function, so that the battery management system can continue to read and write after the power supply is switched on at any time even if the power supply is switched off, and the original record of the actual capacity of the storage battery is not interrupted, thereby providing possibility for man-machine conversation. And monitoring and alarming the voltage, the current and the capacity of the battery system in real time.
The battery management system is provided with three selective output switching value signals, one output signal of a storage battery which is fully charged can be output as an RS232 signal, and meanwhile, the battery management system can have a memory function, so that capacity data of the storage battery can be recorded on a case in real time no matter the storage battery works or sleeps. And secondly, no matter the battery management system works or sleeps, the data of the battery management system cannot be lost, and the battery management system automatically counts continuously immediately as long as the circuit working state of the battery management system is recovered.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a track traffic vehicle-mounted power system battery capacity control system which characterized in that: the vehicle-mounted charger is correspondingly connected with the positive electrode and the negative electrode of the storage battery, the standard resistor is connected between the positive electrode end of the storage battery and the positive electrode end of the vehicle-mounted charger in series, the signal acquisition end of the battery management system is respectively connected with the two ends of the standard resistor, the positive electrode end of the storage battery is connected with the positive electrode end of a vehicle-mounted load after passing through the standard resistor, and the output end of the battery management system is connected with the PLC control end of the vehicle-mounted charger.
2. The rail transit vehicle-mounted power system storage battery capacity control system of claim 1, characterized in that: the storage battery is a vehicle-mounted storage battery.
3. The rail transit vehicle-mounted power system storage battery capacity control system of claim 1, characterized in that: the vehicle-mounted charger is a 3-400UAV/110VDC inverter.
4. The rail transit vehicle-mounted power system storage battery capacity control system of claim 1, characterized in that: the battery management system comprises a processor, a current collector and a voltage detector, wherein test ports of the current collector and the voltage detector are connected with collection ends at two ends of a standard resistor, an input end of the processor is connected with signal output ends of the current collector and the voltage detector respectively, and an output end of the processor is connected with an on-board computer and an output end of an on-board charger respectively.
5. The rail transit vehicle-mounted power system storage battery capacity control system of claim 4, wherein: the battery management system also includes a time counter communicatively coupled to the input of the processor.
6. A detection method for a storage battery capacity control system of a rail transit vehicle-mounted power system is characterized by comprising the following steps: the method comprises the following steps:
(1) when the storage battery is normal, the charging current output by the vehicle-mounted charger is stable, the voltage rises slowly, and a theoretical capacity calculation value of the storage battery is obtained through integral calculation;
(2) when the voltage of the battery reaches a preset voltage limit value of the vehicle-mounted charger and is not changed, the storage battery is fully charged;
(3) at the moment, the capacity detector of the storage battery sends a switching value to be output to the vehicle-mounted computer to form a signal;
(4) when the storage battery is abnormal, if the charging current output by the vehicle-mounted charger is not changed but the voltage of the storage battery rises faster, the voltage of the storage battery reaches the limit value of the voltage of the vehicle-mounted charger instantly;
(5) the working state of the vehicle-mounted charger is converted into a floating charging mode, and the charging current of the storage battery is automatically reduced;
(6) processing and calculating the current and the time through a processor to obtain the capacity of the storage battery in a real-time state, and outputting a processing result to a vehicle-mounted computer;
(7) and the working personnel compares the standard values of the storage battery information received by the vehicle-mounted computer and judges and determines the storage battery fault or virtual voltage problem.
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| CN201910557992.0A CN111044915A (en) | 2019-06-26 | 2019-06-26 | Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof |
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| CN201910557992.0A CN111044915A (en) | 2019-06-26 | 2019-06-26 | Storage battery capacity control system of rail transit vehicle-mounted power system and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325424A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Vehicle-mounted battery power-on and insulation detection control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02118708A (en) * | 1988-10-27 | 1990-05-07 | Sansha Electric Mfg Co Ltd | Dc power unit |
| CN101165963A (en) * | 2006-10-16 | 2008-04-23 | 三星Sdi株式会社 | Battery management system (BMS) and driving method thereof |
| CN101246976A (en) * | 2008-03-25 | 2008-08-20 | 东南大学 | Lead-acid storage battery charging method and its charger |
| CN101567571A (en) * | 2009-01-16 | 2009-10-28 | 上海第二工业大学 | Intelligent charging machine for an electric forklift truck |
| CN202986856U (en) * | 2012-11-20 | 2013-06-12 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel battery forklift truck |
| CN103943901A (en) * | 2014-03-05 | 2014-07-23 | 超威电源有限公司 | Lead acid storage battery current collection system and method thereof |
| CN104882947A (en) * | 2014-12-02 | 2015-09-02 | 重庆小康工业集团股份有限公司 | Electric vehicle alternating-current charging mode-I control device and control method |
| CN106646037A (en) * | 2016-11-28 | 2017-05-10 | 国家电网公司 | DC system real-time detection method for transformer station |
| CN206460151U (en) * | 2016-11-16 | 2017-09-01 | 惠州市蓝微新源技术有限公司 | A kind of battery pack state-of-charge estimating system |
-
2019
- 2019-06-26 CN CN201910557992.0A patent/CN111044915A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02118708A (en) * | 1988-10-27 | 1990-05-07 | Sansha Electric Mfg Co Ltd | Dc power unit |
| CN101165963A (en) * | 2006-10-16 | 2008-04-23 | 三星Sdi株式会社 | Battery management system (BMS) and driving method thereof |
| CN101246976A (en) * | 2008-03-25 | 2008-08-20 | 东南大学 | Lead-acid storage battery charging method and its charger |
| CN101567571A (en) * | 2009-01-16 | 2009-10-28 | 上海第二工业大学 | Intelligent charging machine for an electric forklift truck |
| CN202986856U (en) * | 2012-11-20 | 2013-06-12 | 北京慧峰聚能科技有限公司 | Hybrid power system of fuel battery forklift truck |
| CN103943901A (en) * | 2014-03-05 | 2014-07-23 | 超威电源有限公司 | Lead acid storage battery current collection system and method thereof |
| CN104882947A (en) * | 2014-12-02 | 2015-09-02 | 重庆小康工业集团股份有限公司 | Electric vehicle alternating-current charging mode-I control device and control method |
| CN206460151U (en) * | 2016-11-16 | 2017-09-01 | 惠州市蓝微新源技术有限公司 | A kind of battery pack state-of-charge estimating system |
| CN106646037A (en) * | 2016-11-28 | 2017-05-10 | 国家电网公司 | DC system real-time detection method for transformer station |
Non-Patent Citations (1)
| Title |
|---|
| 田鸿翔 等: "风光储能系统中蓄电池容量的优化", 《电源技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325424A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Vehicle-mounted battery power-on and insulation detection control method |
| CN114325424B (en) * | 2021-12-30 | 2023-08-15 | 深蓝汽车科技有限公司 | Method for controlling electrification and insulation detection of vehicle-mounted battery |
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Application publication date: 20200421 |