CN210074046U

CN210074046U - Power supply battery and power supply system for high-speed maglev train

Info

Publication number: CN210074046U
Application number: CN201920684890.0U
Authority: CN
Inventors: 梁建英; 吴冬华; 陈星�; 邓桂美; 薛健康
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-02-14
Anticipated expiration: 2029-05-14

Abstract

The utility model provides a high-speed maglev train power supply battery and power supply system, wherein, this power supply battery includes: the liquid dissolving tank, the liquid flow pumps and the aluminum air cell reactors are sequentially connected in series; the electrolyte box comprises a plurality of long-strip electrolyte grooves, and one liquid flow pump corresponds to one aluminum-air battery reactor and one electrolyte groove. Through the embodiment of the utility model provides a high-speed maglev train power supply battery and power supply system adopts the aluminium air battery as the on-vehicle energy storage system's of high-speed maglev train power, has and deposits for a long time not lose the electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. The high voltage of the whole power supply battery can be ensured, the self-discharge is reduced, the high integration of the aluminum-air battery is facilitated, the installation space is reduced, the continuous work is realized, and the load function of the magnetic suspension train is continuously realized.

Description

Power supply battery and power supply system for high-speed maglev train

Technical Field

The utility model relates to a magnetic-levitation train vehicle-mounted power supply technical field particularly, relates to a high-speed magnetic-levitation train power supply battery and power supply system.

Background

At present, the highest test running speed of the domestic high-speed maglev train reaches 503km/h, and the highest practical running speed per hour reaches 430 km/h. As time goes on and technical innovation develops, higher-speed maglev trains of more than 600km/h will appear, and then the high-speed maglev trains will inevitably become one of the main transportation means for long-distance running. However, the long-distance operation of high-speed magnetic levitation trains also brings new technical problems: how to ensure the comfort of passengers in a train when the train stops due to faults; how to restart and operate the train after the train fault is repaired. Therefore, on the long-distance operation line, when the train breaks down and stops at any place, the power supply for the train is required to be continuously supplied.

At present, when a high-speed magnetic suspension train stops, the train is continuously supplied with power through a contact current receiving rail (or a non-contact current receiving coil) so as to facilitate the power utilization of systems such as lighting, an air conditioner and the like in the train; and meanwhile, the power battery of the train is charged, so that the train can float again and run for power utilization. At present, the domestic online operation magnetic levitation track has short traffic line, single online operation trains and small quantity, and the high-speed magnetic levitation trains have high-reliability redundancy design, so that the trains can run to contact current receiving rails (or non-contact power supply coils) of nearby stops when the trains have failure problems. Therefore, the technical problem of fault stopping and power supply of domestic high-speed magnetic suspension trains on short-distance operation lines does not exist at present.

On a long-distance operation line, in order to realize that the train can be continuously supplied with power when the train stops in a fault at any place, a current receiving rail (or a power supply coil) is laid on the whole line, so that the investment cost of the magnetic levitation track can be greatly increased, and the maintenance cost and the power supply cost are also increased; meanwhile, due to the fact that the train is designed to have high reliability and redundancy, the probability of train fault stop is small, and therefore the economic benefit of laying the power supply rail (or the power supply coil) is low. Therefore, the train needs a special vehicle-mounted energy storage system to solve the technical problem of power supply for long-distance running high-speed magnetic levitation fault parking.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, an object of the embodiment of the present invention is to provide a power supply battery and a power supply system for a high-speed maglev train.

In a first aspect, the embodiment of the utility model provides a high-speed maglev train power supply battery, include: the system comprises an electrolyte tank, a plurality of liquid flow pumps and a plurality of aluminum air cell reactors, wherein the aluminum air cell reactors are sequentially connected in series;

the electrolyte tank comprises a plurality of strip-shaped electrolyte grooves, and one liquid flow pump corresponds to one aluminum-air battery reactor and one electrolyte groove;

an inlet of the liquid flow pump is arranged in the electrolyte groove, an outlet of the liquid flow pump is connected with a liquid inlet of the aluminum air battery reactor, and the liquid flow pump is used for guiding electrolyte in the electrolyte tank into the aluminum air battery reactor;

the aluminum-air cell reactor comprises a plurality of aluminum-air cell batteries connected in series, and the aluminum-air cell batteries are used for reacting with introduced electrolyte to generate electricity.

In one possible implementation, the aluminum-air cell reactor is arranged above the corresponding electrolyte groove;

and a liquid outlet of the aluminum air cell reactor is arranged at the upper part of the aluminum air cell reactor.

In a possible implementation manner, the number of the electrolyte tanks is multiple, and the aluminum air cell reactor corresponding to each electrolyte tank is also connected in series with the aluminum air cell reactors corresponding to other adjacent electrolyte tanks in sequence.

In one possible implementation, the power supply battery further includes: starting a power supply, a battery management system and a cooling device;

the starting power supply is connected with the battery management system and used for supplying power to the battery management system during starting;

the battery management system is connected with the liquid flow pump and used for providing working voltage for the liquid flow pump;

the aluminum-air battery reactor is also used for supplying power to a vehicle-mounted electric load and the battery management system;

the cooling device is arranged on the periphery of the aluminum air cell reactor and used for dissipating heat of the aluminum air cell reactor.

In one possible implementation, the cooling device includes a cooling fan and a heat sink;

the cooling fins are arranged on the periphery of the aluminum air cell reactor, and the air outlet of the cooling fan faces the cooling fins;

the inlet of the radiating fin is connected with the liquid outlet of the aluminum-air cell reactor, and the outlet of the radiating fin is connected with the liquid inlet of the electrolyte tank.

In a possible implementation manner, an air inlet of the cooling fan is communicated with a cavity of the aluminum-air battery reactor.

In one possible implementation, the starting power source is an on-vehicle secondary battery.

In one possible implementation, the aluminum-air battery reactor is also used for charging the on-vehicle secondary battery.

In one possible implementation, the power supply battery further includes: a heating device;

the heating device is connected with the battery management system, the battery management system provides electric energy, and the electrolyte tank is heated.

In one possible implementation, the power supply battery further comprises a single-phase diode;

the aluminum-air battery reactor supplies power to other equipment through the single-phase diode.

In a second aspect, the embodiment of the present invention further provides a power supply system for a high-speed maglev train, including a power supply battery pack, a voltage converter and a power supply grid; the power supply battery pack comprises n parallel power supply batteries;

the output end of the power supply battery pack is connected with the power supply grid through the voltage converter; the voltage converter is used for converting the output voltage of the power supply battery pack into the vehicle-mounted power supply voltage.

In one possible implementation, the power supply battery pack further includes n contactors; each of the contactors is connected in series with a corresponding power supply battery.

In a possible implementation manner, the power supply system of the high-speed magnetic-levitation train further includes: the system comprises a low-voltage converter, a low-voltage power grid and a vehicle-mounted control system;

the input end of the low-voltage converter is connected with the power supply grid, and the output end of the low-voltage converter is connected with the low-voltage grid and used for carrying out voltage reduction processing on the vehicle-mounted power supply voltage of the power supply grid;

the vehicle-mounted control system is connected with the low-voltage power grid and is powered by the low-voltage power grid; and the vehicle-mounted control system is also connected with a battery management system of the power supply battery and used for controlling the working state of the battery management system.

The embodiment of the utility model provides an in the above-mentioned scheme that the first aspect provided, adopt the aluminium air battery as the on-vehicle energy storage system's of high-speed maglev train power, have for a long time deposit not lose electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. Simultaneously, divide into a plurality of long banding electrolyte recesses with the electrolyte case, every electrolyte recess sets up an aluminium air battery reactor and fluid flow pump, can guarantee the high voltage of whole power supply battery, has reduced self-discharge simultaneously, is favorable to aluminium air battery's high integration, reduces the installation space, can realize continuous work, continuously for maglev train load function.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a first structural schematic diagram of a power supply battery of a high-speed maglev train provided by an embodiment of the present invention;

fig. 2 is a schematic diagram showing a top view structure of an electrolyte tank in a power supply battery of a high-speed maglev train according to an embodiment of the present invention;

fig. 3 shows a second schematic structural diagram of the power supply battery of the high-speed maglev train provided by the embodiment of the invention;

fig. 4 shows a third structural schematic diagram of a power supply battery of a high-speed maglev train provided by the embodiment of the invention;

fig. 5 shows a schematic structural diagram of a power supply system of a high-speed maglev train provided by an embodiment of the present invention.

Icon: 10-an electrolyte tank, 20-a liquid flow pump, 30-an aluminum-air battery reactor, 40-a starting power supply, 50-a battery management system, 60-a cooling device, 70-a heating device, 101-an electrolyte groove, 102-a through hole, 301-an aluminum-air single battery, 302-a lead, 601-a cooling fan, 602-a radiating fin, 100-a power supply battery pack, 200-a voltage converter, 300-a power supply grid, 400-a low-voltage converter, 500-a low-voltage grid and 600-a vehicle-mounted control system.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment of the utility model provides a pair of high-speed maglev train power supply battery, it is shown with reference to figure 1, include: the electrolytic solution tank 10, the plurality of liquid flow pumps 20 and the plurality of aluminum air cell reactors 30 are connected in series in sequence. In fig. 1, two aluminum-air cell reactors 30 are connected in series by a lead 302.

The electrolyte tank 10 includes a plurality of elongated electrolyte grooves 101, and one fluid flow pump 20 corresponds to one aluminum-air battery reactor 30 and corresponds to one electrolyte groove 101. Fig. 3 illustrates an example of a reactor including 3 liquid flow pumps 20 and 3 aluminum-air batteries 30; meanwhile, the aluminum air cell reactor includes a plurality of aluminum air cells connected in series, and each of the aluminum air cell reactors in fig. 3 includes 8 aluminum air cells 301.

An inlet of the liquid flow pump 20 is arranged in the electrolyte groove 101, an outlet of the liquid flow pump 20 is connected with a liquid inlet of the aluminum air battery reactor 30, and the liquid flow pump 20 is used for guiding the electrolyte in the electrolyte tank 10 into the aluminum air battery reactor 30; the aluminum-air cell reactor 30 includes a plurality of aluminum-air cells 301 connected in series, and the aluminum-air cells 301 are used to generate electricity by reacting with the introduced electrolyte.

The embodiment of the utility model provides an in, select for use aluminium air fuel cell as high-speed maglev train's power supply battery. The aluminum-air battery is used as a power supply of the vehicle-mounted energy storage system of the high-speed maglev train, and has the advantages of long-time storage, no power loss, high energy density, high safety, abundant resources, low manufacturing cost, cleanness, easiness in recovery and the like.

In addition, in order to solve the technical problem of power supply for long-distance running high-speed magnetic levitation fault parking, a power supply battery needs to have higher capacity, and more aluminum-air single batteries need to be connected in series at the moment. When the number of the aluminum-air cell in the aluminum-air cell reactor in series is too large, the electrolyte in the aluminum-air cell reactor is equivalent to a load, so that a self-discharge loop is formed with the aluminum-air cell in series to generate a self-discharge phenomenon; the more the aluminum-air single battery is connected in series, the more serious the self-discharge is, the electrolyte can be heated, and the heat dissipation effect of the power supply battery is influenced.

In the embodiment, in order to reduce the self-discharge effect, the electrolyte tank 10 is divided into a plurality of elongated electrolyte grooves 101, and each electrolyte groove 101 is provided with one aluminum-air battery reactor 30 and one liquid flow pump 20, that is, electrolyte loops between the aluminum-air battery reactors 30 are independent from each other, so that the problem of excessive serial connection of aluminum-air single batteries can be avoided; meanwhile, the aluminum air cell reactors 30 are sequentially connected in series, so that the high voltage of the whole power supply cell can be ensured, the self-discharge is reduced, the high integration of the aluminum air cell is facilitated, and the installation space is reduced.

Optionally, referring to fig. 2, fig. 2 schematically shows a top view of the electrolyte tank 10, wherein through holes 102 may be provided between adjacent electrolyte grooves 101, so that the electrolytes in the electrolyte grooves 101 may communicate with each other; meanwhile, all the through holes 102 are sequentially disposed on different sides of the electrolyte tank 101, so that an S-shaped electrolyte loop can be formed in the electrolyte tank 10, as particularly shown by the dotted lines in fig. 2. All the electrolyte grooves 101 form a complete loop, and the whole loop can be communicated with a cooling device, so that the whole structure can be simplified.

Optionally, the number of the electrolyte tanks 10 may also be multiple, and the aluminum-air cell reactor 30 corresponding to each electrolyte tank 10 is also connected in series with the aluminum-air cell reactors 30 corresponding to the other adjacent electrolyte tanks 10 in sequence.

The embodiment of the utility model provides a pair of high-speed maglev train power supply battery adopts the aluminium air battery as the on-vehicle energy storage system's of high-speed maglev train power, has and deposits for a long time not lose the electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. Meanwhile, the electrolyte box is divided into a plurality of long-strip-shaped electrolyte grooves, and each electrolyte groove is provided with an aluminum air battery reactor and a liquid flow pump, so that the high voltage of the whole power supply battery can be ensured, the self-discharge is reduced, the high integration of the aluminum air battery is facilitated, and the installation space is reduced.

On the basis of the above embodiment, the aluminum-air cell reactors 30 are disposed above the respective electrolyte grooves 101; the liquid outlet of the aluminum air cell reactor 30 is arranged at the upper part of the aluminum air cell reactor 30.

The embodiment of the utility model provides an in, set up aluminium air battery reactor 30 in the top of corresponding electrolyte recess 101, aluminium air battery reactor 30's liquid outlet sets up on aluminium air battery reactor 30's upper portion, when needs go into electrolyte to aluminium air battery reactor 30 pump, electrolyte from aluminium air battery reactor 30's below pump income, flows from the top. If the liquid flow pump 20 does not work, the electrolyte cannot enter the aluminum air cell reactor 30 by mistake, so that when the aluminum air cell reactor 30 is not needed for power generation, even if the maglev train is in a running state, the electrolyte in the electrolyte tank 10 shakes, the electrolyte cannot enter the aluminum air cell reactor 30 by mistake.

It should be noted that, for convenience of showing the structure of the power supply battery, a gap is provided between each of the components in fig. 1, and those skilled in the art can understand that, in order to improve the space utilization, the components may be closely arranged. For example, adjacent electrolyte grooves 101 are attached to each other, and adjacent aluminum-air cells 301 are also attached to each other, so as to save space.

On the basis of the above embodiment, referring to fig. 3, the power supply battery further includes: the power source 40, the battery management system 50 and the cooling device 60 are activated.

Specifically, referring to fig. 3, the startup power supply 40 is coupled to the battery management system 50 for powering the battery management system 50 during startup. The battery management system 50 is connected to the fluid flow pump 20 and is configured to provide an operating voltage to the fluid flow pump 20.

The aluminum-air battery reactor is also used for reacting with the introduced electrolyte to generate electricity and supply power to the vehicle-mounted electric load and the battery management system 50. The cooling device 60 is provided at the periphery of the aluminum air cell reactor 30, and is used for dissipating heat of the aluminum air cell reactor 30.

The embodiment of the utility model provides a high-speed maglev train power supply battery's working process specifically as follows:

when the power supply battery needs to be used for supplying power, the liquid flow pump 20 needs to be started, that is, the liquid flow pump needs to be supplied with power through the starting power supply 40. Specifically, a lead directly electrically connecting the starting power source 40 and the fluid flow pump 20 may be disposed in the battery management system 50, so that the starting power source 40 may supply power to the fluid flow pump 20; a power processing circuit may be provided in the battery management system 50, and the electric energy of the starting power source 40 is processed and then transmitted to the fluid flow pump 20, so that the fluid flow pump 20 can be started and operated. The battery management system 50 is specifically configured to control the operating states of the aluminum air battery and the liquid flow pump 20, such as start-stop, rotation speed, and the like; the power supply processing circuit may be a voltage conversion circuit, a switch control circuit, etc., which is not limited in this embodiment.

After the liquid flow pump 20 starts to work, the electrolyte in the electrolyte tank 10 is introduced into the aluminum-air cell reactor 30, so that the electrolyte reacts with the cell reactor to realize power generation. The electrolyte may be potassium hydroxide (KOH) or sodium hydroxide (NaOH) aqueous solution. Meanwhile, when the electrolyte reacts with the cell reactor 50, chemical energy is converted into electric energy and also into heat energy, that is, the reaction process generates heat, so that the temperature of the aluminum air cell reactor 30 is increased; the embodiment of the utility model provides an in dispel the heat to aluminium air cell reactor 30 through cooling device 60, avoid aluminium air cell reactor high temperature.

At present, secondary batteries (such as alkaline batteries, lithium batteries and the like) are mainly used as a power supply of a vehicle-mounted energy storage system of a high-speed maglev train. The secondary battery can be charged and discharged, and has the advantage of repeated use; however, the secondary battery is stored for a long time, which results in a reduction in the amount of discharged battery power, and also has technical problems of heavy weight and the need for an increase in the design of a battery charging control logic circuit. The aluminum-air battery uses high-purity aluminum Al (containing 99.99 percent of aluminum) as a negative electrode, oxygen as a positive electrode and potassium hydroxide (KOH) or sodium hydroxide (NaOH) aqueous solution as an electrolyte. Aluminum takes up oxygen in the air and produces a chemical reaction when the battery is discharged, converting chemical energy into electrical energy. Taking sodium hydroxide electrolyte as an example, the specific reaction is as follows:

Al+O₂+NaOH→NaAlO₂+H₂O；

the embodiment of the utility model provides an in adopt the aluminium air battery as the power of the on-vehicle energy storage system of high-speed maglev train, have the advantage of depositing for a long time not losing the electricity, and the aluminium air battery still has advantages such as energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean easy recovery. In addition, the aluminum air fuel battery is used as a standby power energy storage system for fault parking in the high-speed magnetic levitation, and the aluminum air fuel battery is mainly used for meeting the requirements of power supply of necessary loads of trains and power supply of vehicle-mounted power batteries, and the required power density is relatively low at the moment; and because the train adopts the high reliability redundant design, make the train appear not stop fault probability low. Therefore, the aluminum-air battery is an ideal choice as a standby energy storage system of the high-speed maglev train.

Meanwhile, when the aluminum-air battery discharges, the liquid flow pump 20 is required to pump the electrolyte in the electrolyte tank 10 into the battery reactor 50, and the duration is short, so that power can be supplied to the liquid flow pump 20 after the battery reactor 50 reacts. Therefore, in the embodiment of the present invention, the starting of the aluminum-air battery can be realized by additionally providing a starting power source 40, and the starting power source 40 does not need to be a large-capacity power source, and the requirement on the capacity of the starting power source 40 is low. Specifically, the vehicle-mounted secondary battery of the high-speed maglev train can be used as a starting power supply of the aluminum-air battery. When the aluminum air battery reactor generates electricity, the power can be supplied to the battery management system 50, the liquid flow pump 30, the train load and other equipment, so that the electricity generation process of the aluminum air fuel battery is realized.

The embodiment of the utility model provides a pair of high-speed maglev train power supply battery adopts the aluminium air battery as the on-vehicle energy storage system's of high-speed maglev train power, has and deposits for a long time not lose the electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. The aluminum air battery can start to generate power by using the starting power supply, and then the aluminum air battery can be used for supplying power to the battery management system, the liquid flow pump and the like, so that continuous work is realized, and the load function of the maglev train is continuously realized.

On the basis of the above embodiment, referring to fig. 4, the cooling device 60 includes a cooling fan 601 and a heat sink 602.

The cooling fins 602 are arranged on the periphery of the aluminum air cell reactor 30, and the air outlet of the cooling fan 601 faces the cooling fins 602; the inlet of the cooling fin 602 is connected with the liquid outlet of the aluminum air cell reactor 30, and the outlet of the cooling fin 602 is connected with the liquid inlet of the electrolyte tank 10.

The load characteristic is softer when present aluminium air fuel cell discharges, and occupation space is slightly bigger, and the requirement of track traffic trade to equipment space size is comparatively strict, and the space that is used for installing the power supply battery on the maglev train is less, and traditional aluminium air fuel cell can not directly use on the maglev train. The embodiment of the utility model provides an in, the electrolyte that will react with the battery reactor does not need extra water cooling system as the water-cooling liquid of fin 602, when reducing the battery space, still utilizes the inside electrolyte that flows of battery reactor 50 to carry out high-efficient heat dissipation, can improve the radiating efficiency.

The embodiment of the present invention provides a working process of the cooling device 60 specifically as follows: when the aluminum air battery is required to generate power, the liquid flow pump 20 pumps the electrolyte in the electrolyte tank 10 into the aluminum air battery reactor 30, so that the battery reactor reacts with the electrolyte and provides electric energy; meanwhile, the electrolyte (including the solution after the reaction) in the aluminum air cell reactor is heated due to a chemical reaction, then the heated electrolyte flows into the heat dissipation fins 602, the electrolyte in the heat dissipation fins 602 is dissipated through the heat dissipation fins 602 and the cooling fan 601, the electrolyte flows into the electrolyte tank 10 through the heat dissipation fins 602, the electrolyte in the electrolyte tank 10 is introduced into the aluminum air cell reactor 30 again by the liquid supply pump 20 to generate power, and the process is circulated. The cooling device directly takes the electrolyte in the battery reactor as water cooling liquid, namely directly radiates the electrolyte in the battery reactor, so that the radiating efficiency is high; and an additional water cooling system is not needed, the size of the battery can be reduced, and the battery is more suitable for a maglev train.

In addition to the above-described embodiments, referring to fig. 4, thin line arrows in fig. 4 indicate circuits, thick line arrows indicate water passages of the electrolyte, and broken lines indicate air passages. Specifically, an air inlet of the cooling fan 601 is communicated with the cavity of the aluminum air cell reactor 30. When the cooling fan 601 works, the cooling fan 601 can draw out air in the cavity of the aluminum air cell reactor 30, and meanwhile, due to the fact that the pressure in the cavity of the aluminum air cell reactor 30 is reduced, external air is introduced into the aluminum air cell reactor 30, so that the oxygen content of the aluminum air cell reactor 30 is guaranteed, and the aluminum air cell can efficiently perform chemical reaction. Meanwhile, when the aluminum-air battery is subjected to chemical reaction, air in the cavity of the aluminum-air battery reactor 30 is also hot air, and the hot air is pumped out through the cooling fan 601, so that further heat dissipation is facilitated.

On the basis of the above embodiment, when the aluminum air cell reactor 30 generates electricity, it may also charge the vehicle-mounted secondary battery, that is, charge the starting power source 40, so as to ensure that the starting power source 40 has sufficient electric energy to start the power supply battery.

On the basis of the above embodiment, referring to fig. 4, the power supply battery further includes: a heating device 70; the heating device 70 is connected to the battery management system 50, is powered by the battery management system 50, and heats the electrolyte tank 10.

In the embodiment of the present invention, the electrolyte tank 10 is mainly used for storing the electrolyte, and the electrolyte may be frozen in cold weather; the heating device 70 is arranged at the bottom of the electrolyte tank 10, and when the electrolyte is frozen, the heating device 70 heats and unfreezes the electrolyte, so that the electrolyte can be normally pumped out by the liquid flow pump 20. After the aluminum-air battery is normally operated, the heating device 70 is turned off.

On the basis of the above embodiment, the power supply battery further includes a single-phase diode; the aluminum air cell reactor 30 supplies power to other devices through a single-phase diode. The embodiment of the utility model provides an in, single-phase diode sets up the output at aluminium air cell reactor 30, avoids the electric current backward flow.

The embodiment of the utility model provides a pair of high-speed maglev train power supply battery adopts the aluminium air battery as the on-vehicle energy storage system's of high-speed maglev train power, has and deposits for a long time not lose the electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. The aluminum air battery can start to generate power by using the starting power supply, and then the aluminum air battery can be used for supplying power to the battery management system, the liquid flow pump and the like, so that continuous work is realized, and the load function of the maglev train is continuously realized. The cooling device directly takes the electrolyte in the battery reactor as water cooling liquid, which is equivalent to directly radiating the electrolyte in the battery reactor, and the radiating efficiency is high; and an additional water cooling system is not needed, the size of the battery can be reduced, and the battery is more suitable for a maglev train. The air inlet of the cooling fan is communicated with the cavity of the aluminum-air battery reactor, so that sufficient oxygen in the aluminum-air battery reactor is ensured, and meanwhile, the heat dissipation efficiency can be further improved.

Based on the same utility model concept, the embodiment of the utility model provides a high-speed maglev train power supply system still provides, see that fig. 5 is shown, including power supply battery group 100, voltage converter 200 and power supply electric wire netting 300. The power supply battery pack 100 includes n power supply batteries connected in parallel; the output end of the power supply battery pack 100 is connected with a power supply grid 300 through a voltage converter 200; the voltage converter 200 is used to convert the output voltage of the power supply battery pack 100 into the vehicle-mounted power supply voltage.

In the embodiment of the present invention, the power supply battery is the aluminum air fuel battery described in the above embodiment, and the power supply is realized by n parallel aluminum air fuel batteries; the voltage converter 200 is configured to stabilize an output voltage of the aluminum-air fuel battery, and convert the output voltage into a vehicle-mounted power supply voltage required by the maglev train, such as 440V; and then, the power supply grid 300 can supply power to the vehicle-mounted electric equipment, such as an air conditioning system, a magnetic levitation guidance system and the like in fig. 5.

The embodiment of the utility model provides a pair of high-speed maglev train power supply system adopts the aluminium air battery as high-speed maglev train power supply system's power, has for a long time deposit not lose the electricity, energy density is big, the security is high, the resource is abundant, low in manufacturing cost, clean advantage such as easily retrieving. The redundant design of the multiple power supply batteries and the multiple voltage converters can realize redundant power supply for the train, when one aluminum air fuel battery breaks down abnormally, other aluminum air fuel batteries can continue to supply power for the train, so that seamless switching power supply connection of the aluminum air fuel batteries can be realized, and the reliability of a power supply system is improved.

On the basis of the above embodiment, referring to fig. 5, the power supply battery pack further includes n contactors KM; each contactor KM is connected in series with a respective supply battery. As shown in fig. 5, n contactors (KM 1-KMn) correspond to n power supply batteries (aluminum air fuel batteries 1-n), and the contactor KM is arranged at the output end of the power supply batteries, so as to realize parallel connection and cutting-off of multiple sets of aluminum air batteries. Meanwhile, the diode D in fig. 5 is a unidirectional diode of the power supply battery, and current backflow is avoided.

On the basis of the above-described embodiment, referring to fig. 5, the power supply system further includes: low voltage converter 400, low voltage electrical network 500 and onboard control system 600.

The input end of the low-voltage converter 400 is connected to the power supply grid 300, and the output end is connected to the low-voltage grid 500, and is used for performing voltage reduction processing on the vehicle-mounted power supply voltage of the power supply grid 300; the vehicle-mounted control system 600 is connected with the low-voltage power grid 500 and is powered by the low-voltage power grid 500; and the vehicle-mounted control system 600 is further connected to the battery management system 50 of the power supply battery for controlling the operating state of the battery management system 50.

In the embodiment of the present invention, the power supply system converts high voltage into low voltage through the low voltage converter 400, so as to provide low voltage for the vehicle-mounted electric equipment; and the control of the in-vehicle electric devices and the power supply battery pack 100 is realized by the in-vehicle control system 600. Specifically, referring to fig. 5, the thick lines in fig. 5 represent power supply lines, the thin lines represent low voltage lines, and the broken lines represent signal lines. The fault removal of the aluminum-air battery in the power supply battery pack 100 and the removal of other unnecessary loads of the train can be controlled by the onboard control system 600. Therefore, the interface relation between the aluminum air fuel battery and the train power supply network is realized, and the whole magnetic suspension train is powered.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-speed maglev train power supply battery, characterized in that includes: the system comprises an electrolyte tank, a plurality of liquid flow pumps and a plurality of aluminum air cell reactors, wherein the aluminum air cell reactors are sequentially connected in series;

2. A high speed magnetic-levitation train power supply battery as recited in claim 1, wherein the aluminum-air battery reactor is disposed above the corresponding electrolyte groove;

3. The power supply battery for high-speed maglev trains according to claim 1,

two adjacent be equipped with the through-hole between the electrolyte recess, and all through-holes set gradually the different sides of electrolyte recess.

4. The power supply battery for high-speed maglev trains according to claim 1,

the number of the electrolyte tanks is multiple, and each aluminum-air battery reactor corresponding to the electrolyte tank is also connected with the aluminum-air battery reactors corresponding to other adjacent electrolyte tanks in series in sequence.

5. The power supply battery for high-speed maglev trains according to claim 1, further comprising: starting a power supply, a battery management system and a cooling device;

6. The power supply battery for high-speed maglev trains according to claim 5, wherein the cooling device comprises a cooling fan and a cooling fin;

7. The power supply battery for the high-speed maglev train according to claim 6, wherein an air inlet of the cooling fan is communicated with the cavity of the aluminum-air battery reactor.

8. A power supply battery for a high-speed magnetic-levitation train as recited in claim 5, wherein the starting power supply is a vehicle-mounted secondary battery.

9. A high speed magnetic-levitation train power supply battery as recited in claim 8, wherein the aluminum-air battery reactor is further used for charging the onboard secondary battery.

10. The high-speed maglev power supply battery of claim 5, further comprising: a heating device;

11. A high speed maglev power supply battery according to claim 1, further comprising a single phase diode;

12. A power supply system of a high-speed maglev train is characterized by comprising a power supply battery pack, a voltage converter and a power supply grid; the power supply battery pack comprises n power supply batteries according to any one of claims 1 to 11 connected in parallel;

13. A high speed magnetic-levitation train power supply system as recited in claim 12, wherein the power supply battery pack further comprises n contactors; each of the contactors is connected in series with a corresponding power supply battery.

14. The power supply system for a high speed magnetic-levitation train as recited in claim 12, further comprising: the system comprises a low-voltage converter, a low-voltage power grid and a vehicle-mounted control system;