CN212137349U - Dual-power supply system - Google Patents
Dual-power supply system Download PDFInfo
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- CN212137349U CN212137349U CN202021184663.0U CN202021184663U CN212137349U CN 212137349 U CN212137349 U CN 212137349U CN 202021184663 U CN202021184663 U CN 202021184663U CN 212137349 U CN212137349 U CN 212137349U
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- 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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Abstract
The utility model discloses a dual power supply system, a power supply I and a power supply II both comprise more than two storage battery sets which are connected in series, each storage battery set is arranged in a battery box, each battery box is internally provided with at least one battery management unit for monitoring a unit battery in the battery box and a contactor for controlling the on-off of the power supply of the storage battery set in the battery box, the unit battery in the battery box is monitored by utilizing the battery management unit arranged in each battery box, and the collected signals of electric quantity, voltage, current, temperature and the like are transmitted to a main control module of the battery management system, the main control module of the battery management system analyzes and judges according to the charging and discharging working modes, so that a general contactor and the contactor for controlling the on-off of the power supply of the storage battery set in the battery box are connected or disconnected, thereby realizing the operation of a single power supply or a dual power supply mode, the problems that the power supply operation reliability of a single battery pack is insufficient, the battery capacity of the single battery pack is insufficient, and the single battery pack cannot be applied to large-scale transportation equipment are solved.
Description
Technical Field
The utility model mainly relates to a power supply system of new forms of energy car, in particular to dual power supply system.
Background
The mine anti-explosion lithium ion storage battery trackless rubber-tyred vehicle is used as transportation equipment of a coal mine, has the remarkable characteristics of flexibility, high efficiency, no pollution, high energy efficiency and the like, and is one of the fields of current new energy development. The mining anti-explosion lithium ion storage battery trackless rubber-tyred vehicle is characterized in that the number of unit batteries in the lithium ion storage battery is large, each unit battery needs to be controlled, measured and analyzed, due to the fact that the existing mining anti-explosion lithium ion storage battery trackless rubber-tyred vehicle is simple, a single battery pack is adopted in the existing mining anti-explosion lithium ion storage battery trackless rubber-tyred vehicle, underground transportation environment is poor, power failure occurs occasionally, reliability of power operation of the single battery pack is insufficient, once a vehicle fails in an underground narrow space, road blockage is caused easily, and transportation efficiency of the whole coal mine is affected. In addition, due to safety considerations, the capacity of a single battery pack in a coal mine is limited, and the single battery pack cannot be applied to large-scale transportation equipment due to insufficient battery capacity.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem that single group battery's power operational reliability is not enough, single group battery capacity is not enough for solving current mining explosion-proof lithium ion battery trackless rubber-tyred car, can not use on large-scale transportation equipment, the utility model provides a dual power supply system.
The utility model discloses the technical scheme who adopts does:
a dual power supply system comprises a main positive contactor, a main positive fuse, a main two positive fuses, a power supply I, a power supply II, a shunt I, a shunt II, a battery management system I and a battery management system II, wherein the battery management system I comprises a main control module and a high-voltage monitoring module, the high-voltage monitoring module is in communication connection with the main control module, the battery management system II at least comprises a main control module, the main positive fuse, the power supply I and the shunt I are sequentially connected in series to form a main path I, the main positive fuse, the power supply II and the shunt II are sequentially connected in series to form a main path II, the main path I and the main path II are connected in parallel, the fuse ends of the main path I and the main path II are connected with a contact on the input side of the main positive contactor, the shunt ends of the main path I and the main path II are connected with the negative pole of a power supply output main path, a contact on the output side of the main positive contactor is connected with the positive pole of, one end of a control loop of the main positive contactor is connected with a main control module of the battery management system, the other end of the control loop of the main positive contactor is grounded or connected with a low-voltage negative pole, a power supply I and a power supply II both comprise more than two storage battery packs connected in series, each storage battery pack is arranged in a battery box, at least one battery management unit for monitoring unit batteries in the battery box and a contactor for controlling the power supply of the storage battery packs in the battery box to be connected and disconnected are arranged in each battery box, the battery management unit is in communication connection with the main control module of the battery management system, one end of the control loop of the contactor is connected with the main control module of the battery management system, the other end of the control loop of the contactor is grounded or connected with the low-voltage negative pole, the shunt I is connected with the main control module of the battery management system in parallel, the shunt II is connected with the main control module of the battery management system, and the positive and negative access terminals of a high-voltage monitoring module of the battery management system are respectively connected with the positive pole and the negative pole of a power output main circuit.
Preferably, the dual power supply system further includes a charging control contactor, an input side contact of the charging control contactor is used for being connected with a positive electrode of an external charging power supply, an output side contact of the charging control contactor is connected with safety ends of the first main circuit and the second main circuit, one end of a control loop of the charging control contactor is connected with a main control module of the battery management system, and the other end of the control loop is grounded or connected with a low-voltage negative electrode.
Preferably, the dual power supply system further includes a pre-charging resistor and a pre-charging control contactor, one end of the pre-charging resistor is connected to an output side contact of the charging control contactor, the other end of the pre-charging resistor is connected to an input side contact of the pre-charging control contactor, the output side contact of the pre-charging control contactor is connected to the positive electrode of the power output main circuit, one end of a control loop of the pre-charging control contactor is connected to a main control module of the battery management system, and the other end of the control loop is grounded or connected to the low-voltage negative electrode.
Preferably, the total positive contactor comprises a first total positive contactor and a second total positive contactor, and the first total positive contactor and the second total positive contactor are connected in parallel.
Preferably, the battery pack is a lithium ion battery pack.
Preferably, the battery management unit is in communication connection with a main control module of the battery management system through an intrinsic safety type CAN.
A trackless rubber-tyred vehicle with an explosion-proof lithium ion storage battery for mines is provided with any one of the dual-power supply systems.
The utility model discloses a set up dual supply and special management system, utilize this battery box inner cell of battery management unit control of every battery box embeds, and the electric quantity that will gather, voltage, the electric current, signal transmission such as temperature gives battery management system unified host system, battery management system unified host system in view of the above and fill, the discharge mode carries out the analysis, judge, make the contactor switch-on or the disconnection of always just contactor and control battery box inner storage battery power switch-on and disconnection, thereby realize single power or dual power mode's operation, the power operational reliability who has solved single group battery is not enough, single group battery capacity is not enough, can not be at the problem of using on large-scale transportation equipment.
Adopt the utility model discloses the beneficial effect who brings for mining explosion-proof lithium ion battery trackless rubber-tyred car does:
1. the power supply can be used for standby, the running reliability of the power supply is effectively improved, the running reliability of the rubber-tyred vehicle is improved, and road blockage caused by power supply faults is reduced.
2. The contradiction between the battery capacity and the safety is effectively solved.
3. Under the working condition of an upslope or a heavier load, the driving force can be improved by adopting the parallel operation of the double power supplies; for the rubber-tyred vehicle driven by two motors, the real-time four-drive can be realized, so that the vehicle is suitable for running in complicated road conditions.
Drawings
Fig. 1 is a schematic structural diagram of a dual power supply system according to an embodiment of the present invention;
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the dual power supply system of this embodiment includes a first total positive contactor Z1, a second total positive contactor Z2, a first main positive fuse FU1, a second main positive fuse FU2, a first power supply, a second power supply, a first shunt RW1, a second shunt RW2, a first battery management system BMS1 and a second battery management system BMS2, the first battery management system BMS1 includes a main control module and a high voltage monitoring module, the high voltage monitoring module is communicatively connected to the main control module, the second battery management system BMS2 includes a main control module, the first main positive fuse FU1, the first power supply, the first shunt RW1 are sequentially connected in series to form a first main circuit, the second main positive fuse FU2, the second power supply, and the second shunt RW2 are sequentially connected in series to form a second main circuit, the first main circuit and the second main circuit are connected in parallel, the first total positive contactor Z1 and the second total positive contactor Z2 are connected in parallel, the main circuit terminals of the first main circuit and the second main circuit of the total positive contactor Z1 and the input side of the total positive contactor Z2 are connected to the input, the shunt ends of the first main circuit and the second main circuit are connected with the negative pole of a power output main circuit, the contacts at the output sides of the first main circuit Z1 and the second main circuit Z2 are connected with the positive pole of the power output main circuit, one end of a control loop of the first main circuit Z1 and the second main circuit Z2 is connected with a main control module of a first battery management system BMS1, the other end of the control loop is grounded or connected with the low-voltage negative pole, the first power supply and the second power supply both comprise two storage battery packs connected in series, the two storage battery packs of the first power supply are respectively arranged in a battery box No. 1 and a battery box No. 2, at least one battery management unit for monitoring the unit batteries in the battery box and a contactor J1 for controlling the power supply of the storage battery pack in the battery box to be switched on and switched off are arranged in the battery box No. 2, at least one battery management unit for monitoring the unit batteries in the battery box and a contactor J2 for controlling the power supply to be switched on and switched, two storage battery packs of a power supply II are respectively arranged in a No. 3 battery box and a No. 4 battery box, at least one battery management unit for monitoring unit batteries in the battery box and a contactor J3 for controlling the power supply of the storage battery packs in the battery box to be switched on and off are arranged in the No. 3 battery box, at least one battery management unit for monitoring the unit batteries in the battery box and a contactor J4 for controlling the power supply of the storage battery packs in the battery box to be switched on and off are arranged in the No. 4 battery box, the battery management units are respectively connected with the main control module of a battery management system one BMS1 in a communication way, one end of a control loop of the contactors J1, J2, J3 and J4 is connected with the main control module of the battery management system one BMS1, the other end of the control loop of the contactor is grounded or connected with a low-voltage negative pole, a current divider RW1 is connected with the main control module of the battery management system one, the main control module of the second battery management system BMS2 is in communication connection with the main control module of the first battery management system BMS1, and the positive and negative access terminals of the high-voltage monitoring module of the second battery management system BMS1 are respectively connected with the positive pole and the negative pole of the power output main circuit. The first battery management system BMS1 and the second battery management system BMS2 are implemented by the prior art and will not be described herein.
In order to charge the dual power supply system, preferably, the dual power supply system further includes a charging control contactor C1, an input side contact of the charging control contactor C1 is used for being connected with an anode of an external charging power supply, an output side contact of the charging control contactor C1 is connected with safety ends of the first main circuit and the second main circuit, and one end of a control loop of the charging control contactor C1 is connected with a main control module of the first battery management system BMS1, and the other end of the control loop is grounded or connected with a low-voltage negative electrode.
When the dual-power supply system is used for products such as mining explosion-proof lithium ion battery trackless rubber-tyred vehicles and the like, preferably, the dual-power supply system further comprises a pre-charging resistor R and a pre-charging control contactor Y1, one end of the pre-charging resistor R is connected with an output side contact of a charging control contactor C1, the other end of the pre-charging resistor R is connected with an input side contact of a pre-charging control contactor Y1, an output side contact of the pre-charging control contactor Y1 is connected with the positive pole of a power output main circuit, one end of a control loop of the pre-charging control contactor Y1 is connected with a main control module of a battery management system BMS1, and the other end of the control loop is grounded or connected with a low-voltage negative pole.
The storage battery pack is a lithium ion storage battery pack.
Preferably, the battery management unit is in communication connection with a main control module of a battery management system BMS1 through an intrinsic safety type CAN.
Preferably, the control voltage of the charging control contactor C1, the precharge control contactor Y1, the first total positive contactor Z1, the second total positive contactor Z2, the contactors J1, J2, J3 and J4 is low-voltage DC 24V.
The specific working mode and the implementation process of the dual-power supply system of the embodiment are as follows: (1) the power supply I supplies power independently, and in the working mode, the main control module of the BMS1 in the battery management system controls the first main positive contactor Z1 and/or the second main positive contactor Z2, the contactor J1 and the contactor J2 to pull in, so that the first main circuit is connected, and the contactor J3 and the contactor J4 are disconnected; (2) the second power supply supplies power independently, and in the working mode, the main control module of the BMS1 in the battery management system controls the first main positive contactor Z1 and/or the second main positive contactor Z2, the contactor J3 and the contactor J4 to pull in, so that the second main circuit is connected, and the contactor J1 and the contactor J2 are disconnected; (3) the first power supply and the second power supply power simultaneously, and in the working mode, a main control module of a battery management system BMS1 controls a first main positive contactor Z1, a second main positive contactor Z2, a contactor J1, a contactor J2, a contactor J3 and a contactor J4 to pull in, so that a first main circuit and a second main circuit are both connected; (4) charging the power supply I, wherein in the working mode, a main control module of a BMS1 of the battery management system controls a charging control contactor C1, a contactor J1 and a contactor J2 to attract, and a pre-charging control contactor Y1, a first total positive contactor Z1, a second total positive contactor Z2, a contactor J3 and a contactor J4 are disconnected; (5) charging the power supply II, wherein in the working mode, a main control module of a BMS1 of the battery management system controls a charging control contactor C1, a contactor J3 and a contactor J4 to attract, and a pre-charging control contactor Y1, a second total positive contactor Z2, a first total positive contactor Z1, a contactor J1 and a contactor J2 are disconnected; (6) and simultaneously charging the first power supply and the second power supply, wherein in the working mode, a main control module of a BMS1 of the battery management system controls a charging control contactor C1, a contactor J1, a contactor J2, a contactor J3 and a contactor J4 to be attracted, and a pre-charging control contactor Y1, a first total positive contactor Z1 and a second total positive contactor Z2 are disconnected.
The control signals for switching the three power supply modes can be provided to a main control module of a battery management system BMS1 by an external button, or can be automatically generated by the main control module of a battery management system BMS1 after analyzing and judging data such as electric quantity of each storage battery pack collected and transmitted by each battery management unit according to a set program; when charging, the main control module of the first battery management system BMS1 can analyze and judge the data such as the electric quantity of each storage battery pack collected and transmitted by each battery management unit, automatically select to charge the first power supply or the second power supply with less electric quantity, charge the first power supply and the second power supply simultaneously when approaching the balance, and automatically stop when fully charged, thereby realizing the automatic balance charging management.
The shunts RW1 and RW2 are used for collecting signals of line current by a master control module of the battery management system BMS1 and a master control module of the battery management system BMS2, judging the charging and discharging current condition of the battery pack through signal collection, analysis and calculation, and determining the charging and discharging protection of the battery pack.
In the embodiment, through setting a dual power supply and a special management system, the battery management unit arranged in each battery box is used for monitoring the unit batteries in the battery box, and transmitting the collected signals of electric quantity, voltage, current, temperature and the like to the main control module of the battery management system, and the main control module of the battery management system analyzes and judges according to the signals and the charging and discharging working modes, so that the first total positive contactor, the second total positive contactor and the contactor for controlling the on-off of the power supply of the storage battery pack in the battery box are switched on or off, thereby realizing the operation in a single power supply or dual power supply mode, and solving the problems that the power supply operation reliability of a single battery pack is insufficient, the capacity of the battery of the single battery pack is insufficient, and the single battery pack cannot be applied to large-.
A trackless rubber-tyred vehicle with an explosion-proof lithium ion storage battery for mines is provided with any one of the dual-power supply systems.
The beneficial effect that the dual power supply system of this embodiment of adoption brought for mining explosion-proof lithium ion battery trackless rubber-tyred car does:
1. the power supply can be used for standby, the running reliability of the power supply is effectively improved, the running reliability of the rubber-tyred vehicle is improved, and road blockage caused by power supply faults is reduced.
2. The contradiction between the battery capacity and the safety is effectively solved.
3. Under the working condition of an upslope or a heavier load, the driving force can be improved by adopting the parallel operation of the double power supplies; for the rubber-tyred vehicle driven by two motors, the real-time four-drive can be realized, so that the vehicle is suitable for running in complicated road conditions.
Obviously, the above embodiments are not the only embodiments of the present invention, and many simple changes can be made without departing from the technical essence thereof, such as: replacing the first main positive contactor and the second main positive contactor with a large-capacity main positive contactor; the power supply I comprises more than three storage battery packs connected in series; the power supply II comprises more than three storage battery packs connected in series; the battery management system bi-BMS 2 includes a main control module and a high voltage monitoring module, and so on, which will not be described herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes made without departing from the spirit of the present invention within the knowledge of those skilled in the art should be considered as the protection scope of the present invention.
Claims (6)
1. A dual power supply system is characterized in that: the battery management system comprises a main positive contactor, a main positive fuse, a main two positive fuses, a power supply I, a power supply II, a shunt I, a shunt II, a battery management system I and a battery management system II, wherein the battery management system I comprises a main control module and a high-voltage monitoring module, the high-voltage monitoring module is in communication connection with the main control module, the battery management system II at least comprises a main control module, the main positive fuse, the power supply I and the shunt I are sequentially connected in series to form a main circuit I, the main positive fuse, the power supply II and the shunt II are sequentially connected in series to form a main circuit II, the main circuit I and the main circuit II are connected in parallel, the fuse ends of the main circuit I and the main circuit II are connected with a contact on the input side of the main positive contactor, the shunt ends of the main circuit I and the main circuit II are connected with the negative electrode of a power output main circuit, the contact on the output side of the main positive contactor is connected with the positive electrode of the power output main control circuit of the battery management system, one end of a control, The other end of the power supply I and the power supply II are grounded or connected with a low-voltage negative electrode, each storage battery pack is arranged in a battery box, at least one battery management unit for monitoring unit batteries in the battery box and a contactor for controlling the power supply of the storage battery pack in the battery box to be switched on and off are arranged in each battery box, the battery management unit is in communication connection with a main control module of the battery management system, one end of a control loop of the contactor is connected with the main control module of the battery management system, the other end of the control loop of the contactor is grounded or connected with the low-voltage negative electrode, the current divider I is connected with the main control module of the battery management system II in parallel, the current divider II is connected with the main control module of the battery management system II in parallel, the main control module of the battery management system II is in communication connection with the main control module of the battery management system, and the, The negative access terminal is respectively connected with the positive pole and the negative pole of the power output main circuit.
2. The dual power supply system of claim 1, wherein: the dual-power supply system further comprises a charging control contactor, wherein an input side contact of the charging control contactor is used for being connected with a positive electrode of an external charging power supply, an output side contact of the charging control contactor is connected with safety ends of the first main circuit and the second main circuit, one end of a control loop of the charging control contactor is connected with a main control module of the battery management system, and the other end of the control loop is grounded or connected with a low-voltage negative electrode.
3. The dual power supply system of claim 2, wherein: the dual-power supply system further comprises a pre-charging resistor and a pre-charging control contactor, one end of the pre-charging resistor is connected with an output side contact of the charging control contactor, the other end of the pre-charging resistor is connected with an input side contact of the pre-charging control contactor, an output side contact of the pre-charging control contactor is connected with a positive pole of a power output main path, one end of a control loop of the pre-charging control contactor is connected with a main control module of a battery management system, and the other end of the control loop is grounded or connected with a low-voltage negative pole.
4. The dual power supply system of claim 1, wherein: the total positive contactor comprises a first total positive contactor and a second total positive contactor, and the first total positive contactor and the second total positive contactor are connected in parallel.
5. The dual power supply system of claim 1, wherein: the storage battery pack is a lithium ion storage battery pack.
6. The dual power supply system of claim 1, wherein: the battery management unit is in communication connection with a main control module of the battery management system through an intrinsic safety type CAN.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021184663.0U CN212137349U (en) | 2020-06-23 | 2020-06-23 | Dual-power supply system |
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| CN202021184663.0U CN212137349U (en) | 2020-06-23 | 2020-06-23 | Dual-power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013502A (en) * | 2021-02-19 | 2021-06-22 | 复旦大学 | Lithium battery energy circulation system |
| CN116118528A (en) * | 2023-02-07 | 2023-05-16 | 苏州明泰智能装备有限公司 | Vehicle power management system |
-
2020
- 2020-06-23 CN CN202021184663.0U patent/CN212137349U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013502A (en) * | 2021-02-19 | 2021-06-22 | 复旦大学 | Lithium battery energy circulation system |
| CN113013502B (en) * | 2021-02-19 | 2023-02-28 | 复旦大学 | Lithium battery energy circulation system |
| CN116118528A (en) * | 2023-02-07 | 2023-05-16 | 苏州明泰智能装备有限公司 | Vehicle power management system |
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