CN216819438U - Backup storage battery pack management system for railway vehicle - Google Patents
Backup storage battery pack management system for railway vehicle Download PDFInfo
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- CN216819438U CN216819438U CN202123050460.XU CN202123050460U CN216819438U CN 216819438 U CN216819438 U CN 216819438U CN 202123050460 U CN202123050460 U CN 202123050460U CN 216819438 U CN216819438 U CN 216819438U
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Abstract
The utility model discloses a backup storage battery management system for railway vehicles, which belongs to the technical field of storage battery detection control, and comprises a charging unit POW, a current sensor T1, a voltage sensor T2, a BMS mainboard BMS-main, a first BMS slave board BD1, a second BMS slave board BD2, a third BMS slave board 3, a smoke sensor JTY, a storage battery BAT, a voltage sensor T3, an anti-reverse diode D1, an anti-reverse diode D2, an anti-reverse diode D3, a discharge contactor K1, a charge contactor K2, a power supply contactor K3, a master control switch ZK and a start button QD, so that the technical problem of monitoring the working state of a battery in real time is solved, the utility model can monitor the voltage and the total voltage of single batteries of the storage battery in real time, and provide an alarm and protection implementation circuit when the voltage of the battery is over-charged and over-discharged; and compensating and balancing the storage battery monomer with weak performance in real time.
Description
Technical Field
The utility model belongs to the technical field of storage battery detection control, and relates to a backup storage battery pack management system for railway vehicles.
Background
With the development of rail transit technology, the lithium iron phosphate battery is widely used as a backup battery on a railway vehicle, and a storage battery management system of the existing vehicle cannot monitor and reasonably control the working state of the battery in real time, so that the service life and the safety of the storage battery are difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a backup storage battery pack management system for a railway vehicle, which solves the technical problem of monitoring the working state of a battery in real time.
In order to realize the purpose, the utility model adopts the following technical scheme:
a backup storage battery management system for railway vehicles comprises a charging unit POW, a current sensor T1, a voltage sensor T2, a BMS mainboard BMS-main, a first BMS slave board BD1, a second BMS slave board BD2, a third BMS slave board BD3, a smoke sensor JTY, a storage battery BAT, a voltage sensor T3, an anti-reverse diode D1, an anti-reverse diode D2, an anti-reverse diode D3, a discharge contactor K1, a charging contactor K2, a power supply contactor K3, a master control switch ZK and a start button QD, wherein a positive input end V + and a negative input end V-of the charging unit POW are respectively connected with a positive electrode D + and a negative electrode D-of an external power supply, a positive output end OUT + of the charging unit POW is connected with a positive electrode of the diode D1 through a normally-open switch of the charging contactor K2, a negative output end OUT-of the charging unit POW is connected with a negative electrode of the storage battery BAT, a negative electrode of the storage battery BAT is connected with a positive electrode D1 through the current sensor T1, the signal output end of the current sensor T1 is connected with an analog-to-digital conversion port AD2 of a BMS mainboard BMS-main;
the positive input end and the negative input end of the voltage sensor T2 are respectively connected with the positive electrode and the negative electrode of the battery pack BAT, and the signal output end of the voltage sensor T2 is connected with an analog-to-digital conversion port AD3 of a BMS mainboard BMS-main;
the storage battery pack BAT comprises 90 single batteries, the connection mode of the single batteries is that 3 single batteries are connected in parallel and 33 single batteries are connected in series, namely, each 3 single batteries are firstly connected in parallel to form a parallel module, then 33 parallel modules are connected in series to form an integral storage battery pack, wherein each 11 parallel modules form a series unit which comprises 3 series units, namely a series unit B1, a series unit B2 and a series unit B3;
the positive input end and the negative input end of the first BMS slave board BD1 are respectively connected with the positive electrode and the negative electrode of the series unit B1, the positive input end and the negative input end of the second BMS slave board BD2 are respectively connected with the positive electrode and the negative electrode of the series unit B2, and the positive input end and the negative input end of the third BMS slave board BD3 are respectively connected with the positive electrode and the negative electrode of the series unit B3;
the signal output end of the first BMS slave board BD1, the signal output end of the second BMS slave board BD2 and the signal output end of the third BMS slave board BD3 are all connected with a BMS main board BMS-main;
the negative electrode of the anti-reverse diode D1 is connected with the positive input end V + of the charging unit POW through the normally open switch of the discharging contactor K1, the negative electrode of the anti-reverse diode D1 is also connected with the positive electrode of the anti-reverse diode D3 through the normally open switch of the power supply contactor K3, the negative electrode of the anti-reverse diode D1 is also connected with one end of a starting button QD, and the other end of the starting button QD is connected with the positive electrode of the anti-reverse diode D3;
the negative electrode of the anti-reverse diode D3 is connected with the positive power supply end of a BMS mainboard BMS-main through a master control switch ZK, the negative power supply end of the BMS mainboard BMS-main is connected with the negative input end V-of a charging unit POW, the communication end CAN of the BMS mainboard BMS-main is connected with an external CAN bus, an IO port IO4 of the BMS mainboard BMS-main is connected with a smoke sensor JTY, an IO port IO1 of the BMS mainboard BMS-main drives a coil of a discharging contactor K1, an IO port IO2 of the BMS mainboard BMS-main drives a coil of a charging contactor K2, and an IO port IO3 of the BMS mainboard BMS-main drives a coil of a power supply contactor K3;
the positive input end and the negative input end of the voltage sensor T3 are respectively connected with the positive input end V + of the charging unit POW and the negative electrode of the anti-reverse diode D1, and the output end of the voltage sensor T3 is connected with an analog-to-digital conversion port AD1 of the BMS motherboard BMS-main;
the anode of the anti-reverse diode D2 is connected to the positive input terminal V + of the charging unit POW, and the cathode is connected to the cathode of the anti-reverse diode D3.
Preferably, the model of the current sensor T1 is NACL.200R-S5/SP 1.
Preferably, the model of the current sensor T1 is NACL.200R-S5/SP1, the models of the voltage sensor T2 and the voltage sensor T3 are WBV121S07-H, and the model of the smoke sensor JTY is JTY-GD-T12.
Preferably, the BMS mainboard BMS-main is ZZ3.226.906BDLB; the first BMS is from a slave plate BD1 with model number ZZ3.226.904ADLB, and the second BMS is from a slave plate BD2 with model number ZZ3.226.904ADLB; the third BMS is model ZZ3.226.904ADLB from the board BD 3. The hardware of the slave boards of the three BMS boards are completely the same, and numbering is carried out through dial switches on the boards when the BMS slave boards are used.
Preferably, the charging unit POW comprises ZZM-1500-120-1.
The utility model has the beneficial effects that:
the backup storage battery management system for the railway vehicle solves the technical problem of monitoring the working state of the battery in real time, can monitor the voltage and the total voltage of the single battery of the storage battery in real time, and provides an implementation circuit for alarming and protecting when the voltage of the battery is over-charged and over-discharged; and compensating and balancing the storage battery monomer with weak performance in real time.
Drawings
Fig. 1 is a circuit diagram of the present invention.
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.
As shown in fig. 1, a backup battery pack management system for railway vehicles includes a charging unit POW, a current sensor T1, a voltage sensor T2, a BMS motherboard BMS-main, a first BMS slave BD1, a second BMS slave BD2, a third BMS slave BD3, a smoke sensor JTY, a battery pack BAT, a voltage sensor T3, an anti-reverse diode D1, an anti-reverse diode D2, an anti-reverse diode D3, a discharge contactor K1, a charging contactor K2, a power supply contactor K3, a master switch ZK, and a start button QD, a positive input terminal V + and a negative input terminal V-of the charging unit POW are connected to a positive electrode D + and a negative electrode D-of an external power supply, respectively, a positive output terminal OUT + of the charging unit POW is connected to a positive electrode of the diode D1 through a normally open switch of the charging contactor K2, a negative output terminal OUT-of the charging unit POW is connected to a negative electrode of the battery pack BAT, a positive electrode of the battery pack BAT is connected to a positive electrode D1 through a reverse diode D1, the signal output end of the current sensor T1 is connected with an analog-to-digital conversion port AD2 of a BMS main board BMS-main;
the function of BMS slave plate is to gather battery monomer voltage and temperature parameter, monitors battery monomer performance to carry out the equilibrium compensation to the weakest battery monomer, in order to improve battery monomer performance, increase of service life. Every BMS slave plate is connected 11 modules simultaneously and is monitored to upload information to the BMS mainboard through the mode of CAN communication, and receive the control command of BMS mainboard, open or close balanced function.
The BMS mainboard has a contactor control function and can open or close the charging contactor and the discharging contactor according to the working state of the storage battery pack.
In this embodiment, a user can implement the following functions by using the circuit provided by the present invention:
the charging and discharging current of the storage battery pack and the total voltage of the storage battery pack are respectively detected by a current sensor and a voltage sensor which are connected with the storage battery pack. Through the detection of the total voltage of the storage battery pack, when the total voltage of the storage battery pack exceeds the overcharge alarm voltage, the battery is judged to be fully charged, the overcharge alarm is carried out, and a charging loop is closed; when the total battery of the storage battery pack is lower than the discharge alarm voltage, the battery is judged to be under-voltage, low-voltage alarm is carried out, and a discharge loop is closed. And setting a low-voltage secondary alarm mechanism of the storage battery according to the discharge performance of the storage battery.
The positive input end and the negative input end of the voltage sensor T2 are respectively connected with the positive electrode and the negative electrode of the battery pack BAT, and the signal output end of the voltage sensor T2 is connected with an analog-to-digital conversion port AD3 of a BMS mainboard BMS-main;
the storage battery pack BAT comprises 90 single batteries, the connection mode of the single batteries is that 3 single batteries are connected in parallel and 33 single batteries are connected in series, namely, each 3 single batteries are firstly connected in parallel to form a parallel module, then 33 parallel modules are connected in series to form an integral storage battery pack, wherein each 11 parallel modules form a series unit which comprises 3 series units, namely a series unit B1, a series unit B2 and a series unit B3;
the positive input end and the negative input end of the first BMS slave board BD1 are respectively connected with the positive electrode and the negative electrode of the series unit B1, the positive input end and the negative input end of the second BMS slave board BD2 are respectively connected with the positive electrode and the negative electrode of the series unit B2, and the positive input end and the negative input end of the third BMS slave board BD3 are respectively connected with the positive electrode and the negative electrode of the series unit B3;
the signal output end of the first BMS slave board BD1, the signal output end of the second BMS slave board BD2 and the signal output end of the third BMS slave board BD3 are connected with a BMS main board BMS-main;
the negative electrode of the anti-reverse diode D1 is connected with the positive input end V + of the charging unit POW through the normally open switch of the discharging contactor K1, the negative electrode of the anti-reverse diode D1 is also connected with the positive electrode of the anti-reverse diode D3 through the normally open switch of the power supply contactor K3, the negative electrode of the anti-reverse diode D1 is also connected with one end of a starting button QD, and the other end of the starting button QD is connected with the positive electrode of the anti-reverse diode D3;
the negative electrode of the anti-reverse diode D3 is connected with the positive power supply end of a BMS mainboard BMS-main through a master control switch ZK, the negative power supply end of the BMS mainboard BMS-main is connected with the negative input end V-of a charging unit POW, the communication end CAN of the BMS mainboard BMS-main is connected with an external CAN bus, an IO port IO4 of the BMS mainboard BMS-main is connected with a smoke sensor JTY, an IO port IO1 of the BMS mainboard BMS-main drives a coil of a discharging contactor K1, an IO port IO2 of the BMS mainboard BMS-main drives a coil of a charging contactor K2, and an IO port IO3 of the BMS mainboard BMS-main drives a coil of a power supply contactor K3;
the positive input end and the negative input end of the voltage sensor T3 are respectively connected with the positive input end V + of the charging unit POW and the negative electrode of the anti-reverse diode D1, and the output end of the voltage sensor T3 is connected with an analog-to-digital conversion port AD1 of the BMS motherboard BMS-main;
the anode of the anti-reverse diode D2 is connected to the positive input terminal V + of the charging unit POW, and the cathode is connected to the cathode of the anti-reverse diode D3.
Preferably, the model of the current sensor T1 is NACL.200R-S5/SP 1.
Preferably, the model of the current sensor T1 is NACL.200R-S5/SP1, the models of the voltage sensor T2 and the voltage sensor T3 are WBV121S07-H, and the model of the smoke sensor JTY is JTY-GD-T12.
Preferably, the BMS mainboard BMS-main is ZZ3.226.906BDLB; the first BMS is from a slave plate BD1 with model number ZZ3.226.904ADLB, and the second BMS is from a slave plate BD2 with model number ZZ3.226.904ADLB; the third BMS is model ZZ3.226.904ADLB from the board BD 3. The hardware of the slave boards of the three BMS boards are completely the same, and numbering is carried out through dial switches on the boards when the BMS slave boards are used.
Preferably, the charging unit POW comprises ZZM-1500-120-1.
In this embodiment, the following is one operational scenario implemented by the circuit provided by the present invention:
starting control: and when the positive and negative input wires D + and D-of the external power supply are electrified, the total control switch ZK is closed, the power is supplied to the BMS mainboard BMS-main through the anti-reverse diode D2 and the total control switch, and the BMS mainboard BMS-main is started, and then the discharging contactor K1 and the power supply contactor K3 are automatically switched on. When the positive and negative connection lines D + and D-of the input of the external power supply are suddenly powered off, the storage battery BAT can continue to supply power to the BMS main board BMS-main through the anti-reverse diode D1, the power supply contactor K3 and the anti-reverse diode D3, and the BMS main board BMS-main is prevented from stopping.
When the external power supply inputs positive and negative connection lines D + and D-has no electricity, a user can also press the starting button QD to enable the storage battery BAT to supply power to the BMS main board BMS-main through the anti-reverse diode D1, the starting button and the anti-reverse diode D3, and the power supply contactor K3 is automatically switched on after the BMS main board BMS-main is started.
Charging control of a backup storage battery pack management system: after BMS mainboard BMS-main starts, the voltage signal that continuously detects and transmit from voltage sensor T3 and voltage sensor T2, when the voltage signal that voltage sensor T3 transmitted is higher than the voltage signal that voltage sensor T2 transmitted, show that external power source input positive negative connection D +, D-voltage is normal, BMS mainboard BMS-main controls charging contactor K2 actuation, and charging unit POW can charge storage battery BAT.
The backup storage battery management system performs discharge control: after the BMS mainboard BMS-main is started, voltage signals transmitted from the voltage sensor T3 and the voltage sensor T2 are continuously detected, when the voltage signal transmitted from the voltage sensor T3 is not higher than the voltage signal transmitted from the voltage sensor T2, the loss of voltage of positive and negative connection lines D + and D-of an external power supply is indicated, and now the storage battery BAT discharges the positive and negative connection lines D + and D-of the external power supply through the anti-reverse diode D1 and the discharging contactor K1. BMS motherboard BMS-main controls charging contactor K2 to remain open, preventing battery pack BAT from charging itself through charging unit POW. When the BMS mainboard BMS-main detects that a voltage signal transmitted by the voltage sensor T2 is lower than a secondary low-voltage alarm value, the BMS mainboard BMS-main controls the discharge contactor K1 to be switched off and keeps the power supply contactor K3 to be switched on, so that the positive and negative connection D + and D-discharge of the external power supply input CAN be stopped, the BMS mainboard BMS-main is kept to work continuously, and a low-voltage alarm CAN be sent to an external CAN bus through a communication function; when BMS mainboard BMS-main detects that the voltage signal that voltage sensor T2 transmitted is less than one-level low-voltage alarm value, BMS mainboard BMS-main control power supply contactor K3 disconnection makes BMS mainboard BMS-main self outage, system shutdown protection.
Protection control of a backup storage battery pack management system: the cells in battery pack BAT are divided into 3 groups, each group consisting of 11 modules connected in series. And each group is connected with one BMS slave board BMS-main for detecting the cell voltage and the temperature of the storage battery, and three BMSs are connected together through signal lines of the BMS slave boards BMS-slave (namely, the first BMS slave board BD1, the second BMS slave board BD2 and the third BMS slave board BD3) and finally connected into the BMS master board BMS-main. BMS mainboard BMS-main judges the operating condition of battery through analyzing battery voltage, the temperature data that three BMS slave boards uploaded. If the battery is in an abnormal state, the BMS main board BMS-main is protected by cutting off the discharging contactor K1 and the charging contactor K2. BMS mainboard BMS-main connects smoke transducer JTY, if detect the smog signal, judges that the inside conflagration that takes place of system, cuts off discharge contactor K1 immediately, fills electric contactor K2 and protects, sends alarm information to the communication interface of outside CAN bus simultaneously.
The backup storage battery pack management system provided by the utility model has the functions of storage battery state monitoring and protection. The storage battery state can be monitored in real time, the storage battery is subjected to balanced management, overcharge and overdischarge of the storage battery are protected, storage battery data are measured and recorded, the storage battery is effectively maintained, the service life of the storage battery is prolonged, the operation cost can be saved, and the normal operation of load equipment is ensured
The backup storage battery management system for the railway vehicle solves the technical problem of monitoring the working state of the battery in real time, can monitor the voltage and the total voltage of the single battery of the storage battery in real time, and provides an implementation circuit for alarming and protecting when the voltage of the battery is over-charged and over-discharged; and compensating and balancing the storage battery monomer with weak performance in real time.
Claims (5)
1. A backup battery management system for a railway vehicle, characterized by: comprises a charging unit POW, a current sensor T1, a voltage sensor T2, a BMS main board BMS-main, a first BMS slave board BD1, a second BMS slave board BD2, a third BMS slave board BD3, a smoke sensor JTY, a storage battery BAT, a voltage sensor T3, an anti-reverse diode D1, an anti-reverse diode D2, an anti-reverse diode D3, a discharging contactor K1, a charging contactor K2, a power supply contactor K3, a master control switch ZK and a start button QD, the positive input end V + and the negative input end V-of the charging unit POW are respectively connected with the positive electrode D + and the negative electrode D-of an external power supply, the positive output end OUT + of the charging unit POW is connected with the positive electrode of the diode D1 through a normally open switch of the charging contactor K2, the negative output end OUT-of the charging unit POW is connected with the negative electrode of the storage battery BAT, the positive electrode of the storage battery BAT is connected with the positive electrode of the anti-reverse diode D1 through a current sensor T1, and the signal output end of the current sensor T1 is connected with an analog-to-digital conversion port AD2 of a BMS mainboard BMS-main;
the positive input end and the negative input end of the voltage sensor T2 are respectively connected with the positive electrode and the negative electrode of the battery pack BAT, and the signal output end of the voltage sensor T2 is connected with an analog-to-digital conversion port AD3 of a BMS mainboard BMS-main;
the storage battery pack BAT comprises 90 single batteries, the connection mode of the single batteries is that 3 single batteries are connected in parallel and 33 single batteries are connected in series, namely, each 3 single batteries are firstly connected in parallel to form a parallel module, then 33 parallel modules are connected in series to form an integral storage battery pack, wherein each 11 parallel modules form a series unit which comprises 3 series units, namely a series unit B1, a series unit B2 and a series unit B3;
the positive input end and the negative input end of the first BMS slave board BD1 are respectively connected with the positive electrode and the negative electrode of the series unit B1, the positive input end and the negative input end of the second BMS slave board BD2 are respectively connected with the positive electrode and the negative electrode of the series unit B2, and the positive input end and the negative input end of the third BMS slave board BD3 are respectively connected with the positive electrode and the negative electrode of the series unit B3;
the signal output end of the first BMS slave board BD1, the signal output end of the second BMS slave board BD2 and the signal output end of the third BMS slave board BD3 are connected with a BMS main board BMS-main;
the negative electrode of the anti-reverse diode D1 is connected with the positive input end V + of the charging unit POW through the normally open switch of the discharging contactor K1, the negative electrode of the anti-reverse diode D1 is also connected with the positive electrode of the anti-reverse diode D3 through the normally open switch of the power supply contactor K3, the negative electrode of the anti-reverse diode D1 is also connected with one end of a starting button QD, and the other end of the starting button QD is connected with the positive electrode of the anti-reverse diode D3;
the negative electrode of the anti-reverse diode D3 is connected with the positive power supply end of a BMS mainboard BMS-main through a master control switch ZK, the negative power supply end of the BMS mainboard BMS-main is connected with the negative input end V-of a charging unit POW, the communication end CAN of the BMS mainboard BMS-main is connected with an external CAN bus, an IO port IO4 of the BMS mainboard BMS-main is connected with a smoke sensor JTY, an IO port IO1 of the BMS mainboard BMS-main drives a coil of a discharging contactor K1, an IO port IO2 of the BMS mainboard BMS-main drives a coil of a charging contactor K2, and an IO port IO3 of the BMS mainboard BMS-main drives a coil of a power supply contactor K3;
the positive input end and the negative input end of the voltage sensor T3 are respectively connected with the positive input end V + of the charging unit POW and the negative electrode of the anti-reverse diode D1, and the output end of the voltage sensor T3 is connected with an analog-to-digital conversion port AD1 of the BMS motherboard BMS-main;
the anode of the anti-reverse diode D2 is connected to the positive input terminal V + of the charging unit POW, and the cathode is connected to the cathode of the anti-reverse diode D3.
2. A backup battery management system for a railway vehicle according to claim 1, wherein: the model of the current sensor T1 is NACL.200R-S5/SP 1.
3. A backup battery management system for a railway vehicle according to claim 1, wherein: the model of the current sensor T1 is NACL.200R-S5/SP1, the models of the voltage sensor T2 and the voltage sensor T3 are WBV121S07-H, and the model of the smoke sensor JTY is JTY-GD-T12.
4. A backup battery management system for a railway vehicle according to claim 1, wherein: the BMS mainboard BMS-main is ZZ3.226.906BDLB in model number; the first BMS is from a slave plate BD1 with model number ZZ3.226.904ADLB, and the second BMS is from a slave plate BD2 with model number ZZ3.226.904ADLB; the third BMS is model ZZ3.226.904ADLB from the board BD 3.
5. A backup battery management system for a railway vehicle according to claim 1, wherein: the POW model of the charging unit is ZZM-1500-120-1.
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| CN202123050460.XU CN216819438U (en) | 2021-12-07 | 2021-12-07 | Backup storage battery pack management system for railway vehicle |
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| CN202123050460.XU CN216819438U (en) | 2021-12-07 | 2021-12-07 | Backup storage battery pack management system for railway vehicle |
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