CN212447128U - Emergency traction and auxiliary power supply energy storage system and power supply system for rail transit vehicle - Google Patents
Emergency traction and auxiliary power supply energy storage system and power supply system for rail transit vehicle Download PDFInfo
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- CN212447128U CN212447128U CN202021090164.5U CN202021090164U CN212447128U CN 212447128 U CN212447128 U CN 212447128U CN 202021090164 U CN202021090164 U CN 202021090164U CN 212447128 U CN212447128 U CN 212447128U
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to a rail transit vehicle is with emergent energy storage system and power supply system that pulls and supplementary power supply, energy storage system includes: the converter is provided with a direct current input interface and an alternating current output interface connected with an AC380V bus of the vehicle; the battery pack is provided with three paths of direct current output interfaces, a first path of direct current output interface of the battery pack is connected with a high-voltage power supply HV interface of the vehicle, a second path of direct current output interface of the battery pack is connected with a direct current input interface of the converter, and a third path of direct current output interface of the battery pack is connected with a DC600V bus of the vehicle.
Description
Technical Field
The utility model belongs to the technical field of the track traffic, a track traffic vehicle power supply technique is related to, and specifically speaking relates to a track traffic vehicle is with emergent drawing and supplementary power supply energy storage system and power supply system.
Background
The traction power supply system is an important component of urban rail transit, although sufficient safety and reliability are guaranteed in early design construction and later operation, the problem of short-time interruption or long-time paralysis of urban rail vehicle power supply caused by power supply system faults, pantograph faults, natural disasters and other factors is unavoidable, and then line outage and interval evacuation are caused, and particularly for tunnel operation lines, the traction power supply system has great influence on normal line operation and timely personnel evacuation.
In order to solve the problems, the conventional processing mode is that an operation unit sends out an engineering maintenance trailer nearby to rescue a fault train, so that subsequent vehicle operation is easily delayed, and the operation unit needs to guarantee a certain number of rescue vehicles all the year round. The processing mode has long rescue time, people cannot be evacuated in time, rescue vehicle purchasing is needed regularly, and financial resources are wasted. If the train can realize emergent self-traction through on-vehicle battery or other energy storage systems, will compel to stop in the train of interval and lead to station nearby by oneself, guarantee the emergent supplementary power supply of vehicle simultaneously, will effectively solve because of the train can not effectively receive the emergent problem of dealing with that the electricity arouses, shorten the rescue time, in time resume the circuit operation, guarantee that normal personnel are sparse.
At present, an emergency traction technical scheme applied to a vehicle is mainly modified based on a 110V storage battery pack, so that the emergency traction technical scheme has an emergency traction function. One transformation mode is that when the vehicle needs self-traction, the storage battery is directly connected to the traction main loop, the voltage drop of the input traction inverter is large, the output current of the battery is large, the motor generates heat seriously under low voltage, and the whole traction efficiency is low. The other transformation mode is that a bidirectional DC/DC converter is added to the vehicle, the storage battery is connected to a traction main loop after passing through the DC/DC converter, the energy of the storage battery is released to carry out emergency traction on the bus, but the volume of the DC/DC boost converter is large, and if the energy is not boosted to more than DC1000V, the auxiliary system cannot work. The emergency traction transformation based on the vehicle-mounted 110V storage battery pack is also limited by the characteristics of the storage battery pack (mainly including a nickel-cadmium battery and a lead-acid battery), the discharge multiple is insufficient, high-power output cannot be continuously provided, the cycle life of the storage battery pack is short, and the service life of the storage battery pack is seriously shortened after multiple times of high-rate discharge, so that the storage battery pack needs to be replaced in advance. Meanwhile, the existing storage battery pack of the vehicle has limited electric quantity, cannot meet the vehicle traction requirement of a long distance, cannot meet the normal traction operation of the vehicle on a large slope, and has the problems of short traction distance, limited traction power and low traction speed, so that the rescue effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned problems such as the traction efficiency that exists when current rail vehicle is emergent to be pull low, life is short, provide a rail transit vehicle that rescue is efficient, long service life with emergent pull and supplementary power supply energy storage system and power supply system, can realize that rail transit vehicle is positive line emergent to be pull, supplementary power supply, satisfy shunting, the operation demand of vehicle at vehicle section, test run line, storehouse etc. no net district simultaneously.
In order to achieve the above object, the utility model provides a rail transit vehicle is with emergent drawing and supplementary power supply energy storage system, include:
the converter is provided with a direct current input interface and an alternating current output interface connected with an AC380V bus of the vehicle;
the battery pack is provided with three paths of direct current output interfaces, a first path of direct current output interface of the battery pack is connected with an HV interface of a vehicle high-voltage power supply, a second path of direct current output interface of the battery pack is connected with a direct current input interface of the converter, and a third path of direct current output interface of the battery pack is connected with a vehicle DC600V bus.
Preferably, the converter and the battery pack are both mounted at the bottom of the vehicle body.
Preferably, the converter and the battery pack are both mounted on the top of the vehicle body.
Preferably, the batteries in the battery pack are lithium titanate batteries.
In order to achieve the above object, the utility model also provides a rail transit vehicle is with emergent traction and supplementary power supply system, include:
the high-voltage power supply is provided with an HV interface and an input interface connected with a contact network 1500V + and a contact network 1500V-;
the DC/DC conversion unit I is provided with an input interface connected with a contact net 1500V + and a contact net 1500V-and an output interface connected with a vehicle DC600V bus, and converts DC1500V into DC 600V;
the DC/DC conversion unit II is provided with an input interface connected with a vehicle DC600V bus and an output interface connected with a vehicle DC110V bus, and converts DC600V into DC 110V;
the auxiliary inverter SIV is provided with an input interface connected with a catenary 1500V + and a catenary 1500V-and an output interface connected with a vehicle AC380V bus, and converts DC1500V into AC 380V;
and the emergency traction and auxiliary power supply and energy storage system for the rail transit vehicle.
Further, a DC110V storage battery pack is further included, and an output interface of the DC110V storage battery pack is connected with a vehicle DC110V bus.
The detection device comprises a voltage sensor for detecting the output voltage of the storage battery pack and a controller connected with the voltage sensor, and the controller is electrically connected with the battery pack.
Preferably, the high-voltage power supply is a switching power supply for supplying power for vehicle traction, and an output interface of the high-voltage power supply is connected with the traction inverter VVVF.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
(1) the utility model discloses when rail vehicle was interrupted because of the contact net power supply, can directly pull the power supply for the vehicle, realize the vehicle main line interval emergent function of pulling, vehicle section shunting, fast from pulling near website, avoid the trailer rescue, improve emergent rescue efficiency, effectively solve interval rescue, the sparse problem of personnel.
(2) The utility model discloses when rail vehicle was interrupted because of the contact net power supply, can provide vehicle auxiliary power supply, basic auxiliary assembly when guaranteeing the emergent emergency traction of vehicle main line interval opens, like ventilation blower, guest room illumination etc. avoids causing the carriage outage, ventilate not smooth scheduling problem.
(3) The utility model discloses can charge DC110V storage battery through the machine that charges (DC/DC conversion unit I promptly), increase the redundancy nature of DC110V power supply, prolong the time of operation in the garage.
(4) The utility model discloses have operation mode and section of a motor vehicle shunting mode in the storehouse, still satisfy basic shunting, operation requirement when the section of a motor vehicle does not have third rail or contact net power supply in the storehouse, reduce investment cost.
(5) The utility model discloses the battery of group battery adopts energy density, the higher lithium titanate battery of power density, and the electric quantity is sufficient when guaranteeing emergent traction, simultaneously because lithium titanate battery cycle life is longer, the cycle number of times can reach 20000 times, has prolonged the operation maintenance time.
Drawings
Fig. 1 is the utility model discloses rail transit vehicle is with emergent traction and supplementary power supply energy storage system and power supply system's schematic structure.
In the figure, 1, a converter, 2, a battery pack, 3, a high-voltage power supply, 4, DC/DC conversion units I, 5, DC/DC conversion units II, 6, auxiliary inverters SIV, 7, a DC110V battery pack, 8 and a traction inverter VVVF.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the positional relationship based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to when terminal or long-time paralysis in the power supply of rail transit vehicle for a short time, realize that the vehicle is just emergent to pull, supplementary power supply, satisfy shunting, the operation requirement of vehicle in vehicle section, examination line, the equal no net district in storehouse simultaneously, promote emergent rescue efficiency, extension operation maintenance time, the utility model provides a rail transit vehicle is with emergent pulling and supplementary power supply energy storage system and power supply system can realize that rail transit vehicle is just emergent to pull, supplementary power supply, satisfies shunting, the operation demand of vehicle in vehicle section, examination line, the equal no net district in storehouse simultaneously. The following detailed description is given with reference to specific examples.
Example 1: in this embodiment, referring to fig. 1, an emergency traction and auxiliary power supply energy storage system for a rail transit vehicle is provided, including:
the converter 1 is provided with a direct current input interface and an alternating current output interface connected with a vehicle AC380V bus;
the battery pack 2 is provided with three paths of direct current output interfaces, a first path of direct current output interface of the battery pack is connected with an HV interface of the vehicle high-voltage power supply 3, a second path of direct current output interface of the battery pack is connected with a direct current input interface of the converter, and a third path of direct current output interface of the battery pack is connected with a vehicle DC600V bus.
Specifically, with reference to fig. 1, the AC output interfaces of the converter are an a interface, a B interface, and a C interface, the a interface is connected to U of the vehicle AC380V bus, the B interface is connected to V of the vehicle AC380V bus, and the C interface is connected to W of the vehicle AC380V bus.
Specifically, with reference to fig. 1, the first DC output interface of the battery pack is a DC1+ interface and a DC 1-interface, the DC1+ interface is connected to the HV + interface of the high voltage power supply, and the DC 1-interface is connected to the HV-interface of the high voltage power supply. The second path of direct current output interface of the battery pack is a DC2+ interface and a DC 2-interface, the DC2+ interface is connected with the direct current input DC + interface of the converter, and the DC 2-interface is connected with the direct current input DC-interface of the converter. The third path direct current output interface of the battery pack is a DC3+ interface and a DC 3-interface, the DC3+ interface is connected with a vehicle DC600V + bus, and the DC 3-interface is connected with a vehicle DC 600V-bus.
In a specific embodiment, the converter and the battery pack are both mounted at the bottom of the vehicle body.
In another embodiment, the inverter and the battery pack are both mounted on the top of the vehicle body.
In this embodiment, the battery in the battery pack adopts a lithium titanate battery, and compared with a nickel-cadmium battery (cycle frequency of 500 times) adopted by the existing battery pack, the lithium titanate battery has higher energy density and power density, ensures sufficient electric quantity during emergency traction, has longer cycle service life (cycle frequency of 20000 times), and prolongs the operation and maintenance time.
In this embodiment, the working modes of the energy storage system include a normal operation mode of a main line, an emergency traction mode of the main line, an operation mode in a garage, and a shunting mode of a vehicle section. Wherein:
under the normal operating mode of positive line, the group battery is in the float state of charging, and vehicle AC380V bus passes through the converter and charges the group battery, guarantees that group battery voltage is not less than 600V all the time. In this mode the battery pack does not supply power to the outside.
Under a normal emergency traction mode, a vehicle contact network is in 1500V power loss, a vehicle DC600V bus is in power loss, a vehicle AC380V bus is in power loss, and a high-voltage power supply is in power loss in input, a battery pack firstly supplies power to the AC380V bus through a converter, and necessary auxiliary power supply requirements are met. And then the high-voltage power supply is supplied, so that the requirement of vehicle traction power supply is met. And finally, detecting the voltage of the DC110V storage battery pack through a voltage detection device in the power supply system, if the voltage of the DC110V storage battery pack is lower than 84V, supplying power to a DC600V bus, and enabling a charger (namely a DC/DC conversion unit II) to work to meet the power supply requirement of the DC 110V. In this mode the battery supplies power to the outside.
In an operation mode in a warehouse, the battery pack supplies power to an AC380V bus through the converter to meet the necessary auxiliary power supply requirement, meanwhile, the DC600V bus supplies power, and the charger (namely, the DC/DC conversion unit II) works to meet the DC110V power supply requirement and prolong the operation time. In this mode the battery supplies power to the outside.
Under the shunting mode of the vehicle section, the contact network of the vehicle loses power at 1500V, the bus of the vehicle DC600V loses power, the bus of the vehicle AC380V loses power, the high-voltage power supply is input to lose power, and the battery pack supplies power to the high-voltage power supply, so that the traction power supply requirement of the vehicle is met. In this mode the battery supplies power to the outside.
The energy storage system provided by the embodiment is based on a topological structure of vehicle traction and auxiliary power supply, meets shunting and operating requirements of vehicles in non-network areas such as a vehicle section, a test run line and a garage while realizing vehicle positive line emergency traction and auxiliary power supply, improves emergency rescue efficiency, and prolongs operation maintenance time.
Example 2: with continued reference to fig. 1, in the present embodiment, there is provided an emergency traction and auxiliary power supply system for a rail transit vehicle, including:
the high-voltage power supply 3 is provided with an HV interface and an input interface connected with a contact network 1500V + and a contact network 1500V-;
the DC/DC conversion unit I4 is provided with an input interface connected with a catenary 1500V + and a catenary 1500V-and an output interface connected with a vehicle DC600V bus, and converts DC1500V into DC 600V;
the DC/DC conversion unit II 5 is provided with an input interface connected with a vehicle DC600V bus and an output interface connected with a vehicle DC110V bus, and converts the DC600V into DC 110V;
the auxiliary inverter SIV6 is provided with an input interface connected with a catenary 1500V + and a catenary 1500V-, and an output interface connected with a vehicle AC380V bus, and converts DC1500V into AC 380V;
and the rail transit vehicle emergency traction and auxiliary power supply energy storage system in the embodiment 1.
In a specific embodiment, the power supply system further comprises a DC110V battery pack 7, and an output interface of the DC110V battery pack 7 is connected with a vehicle DC110V bus. When a vehicle contact network 1500V loses power and a vehicle DC600V bus loses power, the DC110V storage battery group supplies power to the DC110V, and the power supply requirement of the DC110V is met.
In a specific embodiment, the power supply system further comprises a detection device, wherein the detection device comprises a voltage sensor for detecting the output voltage of the DC110V storage battery pack and a controller connected with the voltage sensor, and the controller is electrically connected with the battery pack. Under a normal emergency traction mode, when a vehicle contact network is in 1500V power loss, a vehicle DC600V bus is in power loss, a vehicle AC380V bus is in power loss, and a high-voltage power supply is in power loss, the voltage of a DC110V storage battery pack is detected through a voltage sensor, if the voltage of the DC110V storage battery pack is lower than 84V, a controller controls a battery pack to supply power to the DC600V bus, and a charger (namely a DC/DC conversion unit I) works to meet the power supply requirement of the DC 110V.
Specifically, the high-voltage power supply 3 is a switching power supply for supplying power for vehicle traction, and an output interface of the high-voltage power supply 3 is connected with a traction inverter VVVF 8. The traction inverter VVVF8 is supplied with power through a high-voltage power supply, and the traction power supply requirement of the vehicle is met.
The principles of the power supply system in this embodiment for emergency traction, auxiliary power supply, and network-free shunting and operation of vehicles in vehicle sections, test lines, warehouses, and the like are the same as those in embodiment 1, and are not described herein again.
According to the power supply system, the rail transit vehicle emergency traction and auxiliary power supply energy storage system based on the topological structure design of vehicle traction and auxiliary power supply is adopted, the requirements of shunting and operation of the vehicle in non-network areas such as a vehicle section, a test run line and a garage are met while the vehicle is subjected to positive line emergency traction and auxiliary power supply, the emergency rescue efficiency is improved, and the operation maintenance time is prolonged.
The above-mentioned embodiments are provided for explaining the present invention, and not for limiting the present invention, and any modifications and changes made by the present invention are within the spirit and scope of the claims of the present invention.
Claims (8)
1. An emergent energy storage system that pulls and supplementary power supply for rail transit vehicle, its characterized in that includes:
the converter is provided with a direct current input interface and an alternating current output interface connected with an AC380V bus of the vehicle;
the battery pack is provided with three paths of direct current output interfaces, a first path of direct current output interface of the battery pack is connected with an HV interface of a vehicle high-voltage power supply, a second path of direct current output interface of the battery pack is connected with a direct current input interface of the converter, and a third path of direct current output interface of the battery pack is connected with a vehicle DC600V bus.
2. The emergency traction and auxiliary power supply energy storage system for rail transit vehicles of claim 1, wherein the converter and the battery pack are both mounted at the bottom of the vehicle body.
3. The emergency traction and auxiliary power supply energy storage system for rail transit vehicles of claim 1, wherein the inverter and the battery pack are mounted on the top of the vehicle body.
4. The emergency traction and auxiliary power supply energy storage system for the rail transit vehicle as claimed in any one of claims 1 to 3, wherein the battery of the battery pack is a lithium titanate battery.
5. An emergency traction and auxiliary power supply system for a rail transit vehicle, comprising:
the high-voltage power supply is provided with an HV interface and an input interface connected with a contact network 1500V + and a contact network 1500V-;
the DC/DC conversion unit I is provided with an input interface connected with a contact net 1500V + and a contact net 1500V-and an output interface connected with a vehicle DC600V bus, and converts DC1500V into DC 600V;
the DC/DC conversion unit II is provided with an input interface connected with a vehicle DC600V bus and an output interface connected with a vehicle DC110V bus, and converts DC600V into DC 110V; the auxiliary inverter SIV is provided with an input interface connected with a catenary 1500V + and a catenary 1500V-and an output interface connected with a vehicle AC380V bus, and converts DC1500V into AC 380V;
and the rail transit vehicle emergency traction and auxiliary power supply energy storage system of any one of claims 1 to 4.
6. The emergency traction and auxiliary power supply system for rail transit vehicles according to claim 5, further comprising a DC110V battery pack, wherein an output interface of the DC110V battery pack is connected with a vehicle DC110V bus.
7. The emergency traction and auxiliary power supply system for rail transit vehicles according to claim 6, further comprising a voltage detection device including a voltage sensor for detecting an output voltage of the secondary battery pack and a controller connected to the voltage sensor, the controller being electrically connected to the battery pack.
8. The emergency traction and auxiliary power supply system for rail transit vehicles according to any one of claims 5 to 7, characterized in that the high-voltage power supply is a switching power supply for supplying power for vehicle traction, and an output interface of the high-voltage power supply is connected with a traction inverter VVVF.
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| CN202021090164.5U CN212447128U (en) | 2020-06-12 | 2020-06-12 | Emergency traction and auxiliary power supply energy storage system and power supply system for rail transit vehicle |
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| CN202021090164.5U CN212447128U (en) | 2020-06-12 | 2020-06-12 | Emergency traction and auxiliary power supply energy storage system and power supply system for rail transit vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381427A (en) * | 2021-07-16 | 2021-09-10 | 盾石磁能科技有限责任公司 | Traction power supply system based on flywheel energy storage and flywheel energy storage control scheduling method |
| CN114368289A (en) * | 2022-01-05 | 2022-04-19 | 中车唐山机车车辆有限公司 | Power supply system and magnetic-levitation train |
-
2020
- 2020-06-12 CN CN202021090164.5U patent/CN212447128U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381427A (en) * | 2021-07-16 | 2021-09-10 | 盾石磁能科技有限责任公司 | Traction power supply system based on flywheel energy storage and flywheel energy storage control scheduling method |
| CN114368289A (en) * | 2022-01-05 | 2022-04-19 | 中车唐山机车车辆有限公司 | Power supply system and magnetic-levitation train |
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