Monorail train energy storage system and monorail train

Abstract

The utility model discloses a monorail train energy storage system and a monorail train, and relates to the technical field of rail transit. The super capacitor, the input and output protection circuit, the host, the battery management system and the heat dissipation device are arranged in the energy storage box provided by the scheme, and a DC750V power supply system is adopted, so that the electrical clearance can be effectively reduced, and the energy storage system can be mounted under the monorail train. On the other hand, the contactor, the traction inverter box and the high-voltage and auxiliary inverter box which are powered by the energy storage system are respectively integrated with the traction inverter box and the output contactor box, and are integrated with the auxiliary inverter box, the high-voltage electric appliance box and the fuse and grounding switch box, so that the sizes of the traction system and the auxiliary system are further reduced; and a larger arrangement space can be provided for the energy storage system. The energy storage box is specifically arranged on the outer side of the track beam limit, normal operation of the monorail train can be guaranteed, and the problem that an existing monorail train energy storage system is difficult to install is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a monorail train energy storage system and a monorail train. Background Art

[0002] A monorail train is a type of rail vehicle, which is characterized by using only one track instead of two parallel tracks of traditional rail vehicles. Among them, catenary power supply is the most common power supply method for monorail trains, which specifically provides DC power to the train through the catenary above the car body. In some application scenarios, it is being considered to replace the power supply method of monorail trains from catenary power supply to energy storage system power supply, that is, to provide auxiliary power supply and traction power supply for monorail trains through energy storage systems, so that there is no need to configure catenary on the main line, and only charging piles need to be set up at the platform, which can effectively reduce the operating cost of monorail trains.

[0003] Due to the height limit of the monorail, the larger energy storage system can only be arranged under the car. The traction system, auxiliary system and braking system of the monorail are already arranged under the car, and the remaining space is relatively small; therefore, under this premise, the installation of the energy storage system is very difficult.

[0004] In view of the above problems, how to solve the installation difficulties of the current monorail train energy storage system is an urgent problem to be solved by technicians in this field. Utility Model Content

[0005] The utility model aims to provide a monorail train energy storage system and a monorail train, so as to solve the problem that the current monorail train energy storage system is difficult to install.

[0006] In order to solve the above technical problems, the utility model provides a monorail train energy storage system, comprising: an energy storage box arranged outside the limit of the track beam; the energy storage box is provided with a super capacitor, an input and output protection circuit, a host, a battery management system and a heat dissipation device;

[0007] The host is connected to the input-output protection circuit, a first end of the input-output protection circuit is connected to the power supply end of the supercapacitor, and a second end of the input-output protection circuit is connected to the contactor and the traction inverter box, the high voltage and auxiliary inverter box and the heat sink;

[0008] The host is used to control the super capacitor to supply power to the contactor and traction inverter box, the high voltage and auxiliary inverter box and the heat sink by controlling the on and off of the input and output protection circuit;

[0009] The heat dissipation device is used to dissipate heat for the super capacitor;

[0010] The battery management system is connected to the supercapacitor and is used to monitor the electrical parameters of the supercapacitor and perform health management on the supercapacitor;

[0011] Among them, the contactor and traction inverter box integrates the traction inverter box and the output contactor box; the high-voltage and auxiliary inverter box integrates the auxiliary inverter box, the high-voltage electrical box, the fuse and the grounding switch box; the energy storage box, the contactor and traction inverter box and the high-voltage and auxiliary inverter box all adopt the DC750V power supply standard.

[0012] On the one hand, the input and output protection circuit includes: a main fuse, a first isolating switch, a second isolating switch and a pre-charging circuit;

[0013] The first end of the main fuse is connected to the negative electrode of the supercapacitor, the second end of the main fuse is connected to the first end of the second isolating switch, and the main fuse is used to melt when the input and output protection circuit is overcurrent;

[0014] The first end of the first isolating switch is connected to the positive electrode of the supercapacitor, and the second end of the first isolating switch is connected to the first input end of the pre-charging loop; the second end of the second isolating switch is connected to the second input end of the pre-charging loop; the first isolating switch and the second isolating switch are used to control the on and off of the input and output protection circuit;

[0015] The pre-charging circuit is used to reduce the circuit voltage difference when the input-output protection circuit is turned on under the control of the host;

[0016] Among them, the first end of the main fuse and the first end of the first isolating switch together serve as the first end of the input-output protection circuit, and the first output end of the pre-charging loop and the second output end of the pre-charging loop together serve as the second end of the input-output protection circuit.

[0017] On the other hand, the pre-charging circuit includes: a main contactor, a pre-charging contactor, a pre-charging fuse, a first pre-charging resistor and a second pre-charging resistor;

[0018] The first end of the main contactor is connected to the first end of the pre-charging fuse, the second end of the pre-charging fuse is connected to the first end of the pre-charging contactor, the second end of the pre-charging contactor is connected to the first end of the first pre-charging resistor and the first end of the second pre-charging resistor; the second end of the main contactor is connected to the second end of the first pre-charging resistor and the second end of the second pre-charging resistor;

[0019] The third end of the main contactor is connected to the third end of the pre-charging contactor; the fourth end of the main contactor is connected to the fourth end of the pre-charging contactor;

[0020] Among them, the common end formed by the first end of the main contactor and the first end of the pre-charging fuse serves as the first input end of the pre-charging circuit, and the common end formed by the third end of the main contactor and the third end of the pre-charging contactor serves as the second input end of the pre-charging circuit; the second end of the main contactor serves as the first output end of the pre-charging circuit, and the common end formed by the fourth end of the main contactor and the fourth end of the pre-charging contactor serves as the second output end of the pre-charging circuit.

[0021] On the other hand, the input-output protection circuit further includes: a current sensor, an insulation detector, an insulation detector fuse, a voltage sensor, and a voltage sensor fuse;

[0022] The first end of the current sensor is connected to the second end of the first isolating switch, and the second end of the current sensor is connected to the first end of the main contactor;

[0023] The first end of the insulation detector fuse is connected to the first end of the main contactor, the second end of the insulation detector fuse is connected to the first end of the insulation detector, and the second end of the insulation detector is connected to the third end of the main contactor;

[0024] The first end of the voltage sensor fuse is connected to the second end of the main contactor, the second end of the voltage sensor fuse is connected to the first end of the voltage sensor, and the second end of the voltage sensor is connected to the fourth end of the main contactor.

[0025] On the other hand, the heat dissipation device includes: an air conditioning device, an air conditioning contactor and an air conditioning fuse;

[0026] The first end of the air conditioning contactor is connected to the first output end of the pre-charging circuit, and the second end of the air conditioning contactor is connected to the first end of the air conditioning fuse; the second end of the air conditioning fuse is connected to the first end of the air conditioning device, and the second end of the air conditioning device is connected to the second output end of the pre-charging circuit.

[0027] On the other hand, the number of the energy storage tanks is multiple;

[0028] Each of the energy storage boxes is respectively arranged on both sides of the track beam limit at the bottom of the monorail train.

[0029] On the other hand, the energy storage box includes a capacitor box, a heat dissipation system box and an electrical component box;

[0030] Among them, the supercapacitor and the battery management system are arranged in the capacitor box; the heat dissipation device is arranged in the heat dissipation system box; the input and output protection circuit and the host are arranged in the electrical component box.

[0031] On the other hand, there are two energy storage boxes, and the energy storage boxes contain a plurality of supercapacitors.

[0032] On the other hand, the supercapacitors in the two energy storage boxes are connected in series.

[0033] In order to solve the above technical problems, the utility model also provides a monorail train, including the above monorail train energy storage system.

[0034] The monorail train energy storage system provided by the utility model comprises an energy storage box arranged outside the limit of the track beam; a supercapacitor, an input-output protection circuit, a host, a battery management system and a heat dissipation device are arranged in the energy storage box; the host is connected to the input-output protection circuit, the first end of the input-output protection circuit is connected to the power supply end of the supercapacitor, and the second end of the input-output protection circuit is connected to the contactor and traction inverter box, the high-voltage and auxiliary inverter box and the heat dissipation device; the host is used to control the supercapacitor to supply power to the contactor and traction inverter box, the high-voltage and auxiliary inverter box and the heat dissipation device by controlling the conduction and shutdown of the input-output protection circuit; the heat dissipation device is used to dissipate heat for the supercapacitor; the battery management system is connected to the supercapacitor to monitor the electrical parameters of the supercapacitor and perform health management on the supercapacitor; wherein the contactor and traction inverter box integrates the traction inverter box and the output contactor box; the high-voltage and auxiliary inverter box integrates the auxiliary inverter box, the high-voltage electrical box and the fuse and the grounding switch box; the energy storage box, the contactor and traction inverter box and the high-voltage and auxiliary inverter box all adopt the DC750V power supply standard. From the above content, it can be seen that the energy storage box provided by this solution is equipped with supercapacitors, input and output protection circuits, host, battery management system and heat dissipation device, and adopts DC750V power supply standard, which can effectively reduce the electrical gap, so as to adapt to the installation of the energy storage system under the monorail train. On the other hand, the contactor and traction inverter box and high-voltage and auxiliary inverter box powered by the energy storage system are respectively integrated with the traction inverter box and the output contactor box, as well as the auxiliary inverter box, high-voltage electrical box and fuse and grounding switch box, thereby further reducing the volume of the traction system and auxiliary system, and providing a larger layout space for the energy storage system. The energy storage box is specifically arranged outside the limit of the track beam, which can ensure the normal operation of the monorail train and solve the problem of the difficulty in installing the current monorail train energy storage system.

[0035] In addition, the utility model also provides a monorail train, comprising the above-mentioned monorail train energy storage system, with the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of an energy storage box provided in an embodiment of the utility model;

[0038] Figure 2 A schematic diagram of the location of the energy storage box provided in an embodiment of the utility model;

[0039] Figure 3 A circuit diagram of an energy storage box provided in an embodiment of the utility model;

[0040] Figure 4 A schematic diagram of the layout of the energy storage box provided in an embodiment of the utility model.

[0041] Among them, 10 is an energy storage box, 11 is a supercapacitor, 12 is an input and output protection circuit, 13 is a host, 14 is a battery management system, 15 is a heat dissipation device, 16 is a contactor and traction inverter box, 17 is a high-voltage and auxiliary inverter box, 18 is a track beam, 121 is a pre-charging circuit, 20 is a capacitor box, 21 is a heat dissipation system box, and 22 is an electrical component box. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0043] The core of the utility model is to provide a monorail train energy storage system and a monorail train, so as to solve the problem that the current monorail train energy storage system is difficult to install.

[0044] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Due to the height limit, the traction system, auxiliary system, braking system and other system equipment of the monorail train can only be arranged under the car. However, it is very difficult to add an energy storage system to the monorail train under the premise that the traction system, auxiliary system and braking system are installed under the car. In order to solve this problem, the utility model provides a monorail train energy storage system.

[0046] Figure 1 A schematic diagram of an energy storage box provided in an embodiment of the utility model. Figure 1 As shown, the monorail train energy storage system includes: an energy storage box 10 arranged outside the limit of the track beam; the energy storage box 10 is provided with a super capacitor 11, an input and output protection circuit 12, a host 13, a battery management system 14 and a heat dissipation device 15;

[0047] The host 13 is connected to the input-output protection circuit 12, the first end of the input-output protection circuit 12 is connected to the power supply end of the super capacitor 11, and the second end of the input-output protection circuit 12 is connected to the contactor and traction inverter box 16, the high-voltage and auxiliary inverter box 17 and the heat sink 15;

[0048] The host 13 is used to control the on and off of the input and output protection circuit 12 to control the power supply of the super capacitor 11 to the contactor and the traction inverter box 16, the high voltage and auxiliary inverter box 17 and the heat sink 15;

[0049] The heat sink 15 is used to dissipate heat for the super capacitor 11;

[0050] The battery management system 14 is connected to the supercapacitor 11 and is used to monitor the electrical parameters of the supercapacitor 11 and perform health management on the supercapacitor 11;

[0051] Among them, the contactor and traction inverter box 16 integrates the traction inverter box and the output contactor box; the high-voltage and auxiliary inverter box 17 integrates the auxiliary inverter box, the high-voltage electrical box and the fuse and grounding switch box; the energy storage box 10, the contactor and traction inverter box 16 and the high-voltage and auxiliary inverter box 17 all adopt the DC750V power supply standard.

[0052] Specifically, the monorail train energy storage system provided by the present solution is specifically an energy storage box 10 including a supercapacitor 11, an input-output protection circuit 12, a host 13, a battery management system 14 and a heat dissipation device 15. Among them, the supercapacitor 11 is the core electronic device of the energy storage system, which can provide output power for various systems of the monorail train. The input-output protection circuit 12 contains a plurality of electrical components such as fuses and contactors, which play a role in circuit protection, and can be switched on and off under the control of the host 13, thereby controlling the power output of the supercapacitor 11 to various systems of the monorail train. In this embodiment, there is no restriction on the circuit structure of the input-output protection circuit 12, which depends on the specific implementation situation. The battery management system 14 (Battery Management System, BMS) can monitor the electrical parameters of the supercapacitor 11 in real time and perform health management on the supercapacitor 11. The heat dissipation device 15 is powered by the supercapacitor 11 and can dissipate heat for the supercapacitor 11.

[0053] Figure 2 This is a schematic diagram of the energy storage box provided in the embodiment of the utility model. Figure 2 As shown, the energy storage box 10 is arranged outside the limit of the track beam 18 at the bottom of the monorail train. In order to fully utilize the layout space under the monorail car, the energy storage box 10 adopts an L-shaped layout, so that it maximizes the use of the layout limit under the car and can ensure the normal operation of the vehicle. It should be noted that in this solution, the energy storage box 10 adopts a DC750V power supply standard. Compared with the DC1500V power supply standard, the electrical clearance of the DC750V power supply standard is significantly reduced, which can effectively save the space under the car and facilitate the setting of the energy storage system. At the same time, the contactor and traction inverter box 16 and the high-voltage and auxiliary inverter box 17 powered by the energy storage box 10 also adopt a DC750V power supply standard. It should be noted that the contactor and traction inverter box 16 integrates the traction inverter box and the output contactor box, and the high-voltage and auxiliary inverter box 17 integrates the auxiliary inverter box, the high-voltage electrical box, the fuse and the grounding switch box. By adopting the DC750V power supply standard and performing a lightweight integrated design at the same time, the volume of the traction and auxiliary system can be effectively reduced, thereby further saving the space under the vehicle and making it easier to set up the energy storage system.

[0054] In this embodiment, the energy storage box is provided with a supercapacitor, input and output protection circuits, a host, a battery management system and a heat dissipation device, and adopts a DC750V power supply standard, which can effectively reduce the electrical gap, thereby adapting to the installation of the energy storage system under the monorail train. On the other hand, the contactor and traction inverter box and the high-voltage and auxiliary inverter box powered by the energy storage system are respectively integrated with the traction inverter box and the output contactor box, as well as the auxiliary inverter box, the high-voltage electrical box and the fuse and the grounding switch box, thereby further reducing the volume of the traction system and the auxiliary system, and providing a larger layout space for the energy storage system. The energy storage box is specifically arranged outside the limit of the track beam, which can ensure the normal operation of the monorail train and solve the problem of the difficulty in installing the current monorail train energy storage system.

[0055] Figure 3 A circuit diagram of an energy storage box provided in an embodiment of the utility model. Figure 3 As shown, the input-output protection circuit 12 includes: a main fuse F1, a first isolating switch Q1, a second isolating switch Q2 and a pre-charging circuit 121;

[0056] A first end of the main fuse F1 is connected to the negative electrode of the super capacitor 11, and a second end of the main fuse F1 is connected to a first end of the second isolating switch Q2. The main fuse F1 is used to fuse when the input / output protection circuit 12 is overcurrented.

[0057] A first end of the first isolating switch Q1 is connected to the positive electrode of the super capacitor 11, and a second end of the first isolating switch Q1 is connected to a first input end of the pre-charging circuit 121; a second end of the second isolating switch Q2 is connected to a second input end of the pre-charging circuit 121; the first isolating switch Q1 and the second isolating switch Q2 are used to control the on and off of the input / output protection circuit 12;

[0058] The pre-charging circuit 121 is used to reduce the circuit voltage difference when the input / output protection circuit 12 is turned on under the control of the host 13;

[0059] The first end of the main fuse F1 and the first end of the first isolating switch Q1 serve as the first end of the input-output protection circuit 12 , and the first output end of the pre-charging loop 121 and the second output end of the pre-charging loop 121 serve as the second end of the input-output protection circuit 12 .

[0060] In a specific implementation, the input-output protection circuit 12 is composed of a main fuse F1, a first isolating switch Q1, a second isolating switch Q2 and a pre-charging circuit 121. Among them, the first end of the main fuse F1 is connected to the negative electrode of the supercapacitor 11, and the second end of the main fuse F1 is connected to the first end of the second isolating switch Q2. The main fuse F1 is used to melt when the input-output protection circuit 12 is overcurrent, which plays a role in circuit protection. The first end of the first isolating switch Q1 is connected to the positive electrode of the supercapacitor 11, and the second end of the first isolating switch Q1 is connected to the first input end of the pre-charging circuit 121; the second end of the second isolating switch Q2 is connected to the second input end of the pre-charging circuit 121; the first isolating switch Q1 and the second isolating switch Q2 are used to control the conduction and shutdown of the input-output protection circuit 12, and can perform manual isolation operations during maintenance, so that the positive and negative lines of the supercapacitor 11 are disconnected from the outside and no longer discharge to the outside, thereby ensuring the safety of maintenance personnel. The pre-charging circuit 121 is used to be controlled by the host 13 to reduce the circuit voltage difference when the input / output protection circuit 12 is turned on to prevent arcing.

[0061] like Figure 3 As shown, the pre-charging circuit 121 specifically includes: a main contactor KM1, a pre-charging contactor KM2, a pre-charging fuse F2, a first pre-charging resistor R1 and a second pre-charging resistor R2;

[0062] The first end of the main contactor KM1 is connected to the first end of the pre-charging fuse F2, the second end of the pre-charging fuse F2 is connected to the first end of the pre-charging contactor KM2, the second end of the pre-charging contactor KM2 is connected to the first end of the first pre-charging resistor R1 and the first end of the second pre-charging resistor R2; the second end of the main contactor KM1 is connected to the second end of the first pre-charging resistor R1 and the second end of the second pre-charging resistor R2;

[0063] The third end of the main contactor KM1 is connected to the third end of the pre-charging contactor KM2; the fourth end of the main contactor KM1 is connected to the fourth end of the pre-charging contactor KM2;

[0064] Among them, the common end formed by the first end of the main contactor KM1 and the first end of the pre-charging fuse F2 serves as the first input end of the pre-charging circuit 121, and the common end formed by the third end of the main contactor KM1 and the third end of the pre-charging contactor KM2 serves as the second input end of the pre-charging circuit 121; the second end of the main contactor KM1 serves as the first output end of the pre-charging circuit 121, and the common end formed by the fourth end of the main contactor KM1 and the fourth end of the pre-charging contactor KM2 serves as the second output end of the pre-charging circuit 121.

[0065] In a specific implementation, the pre-charging circuit 121 is mainly composed of a main contactor KM1, a pre-charging contactor KM2, a pre-charging fuse F2, a first pre-charging resistor R1 and a second pre-charging resistor R2. The pre-charging fuse F2 plays a circuit protection role for the pre-charging circuit 121. The first pre-charging resistor R1 and the second pre-charging resistor R2 are used to limit the impact of the input current on the pre-charging circuit 121. The main contactor KM1 and the pre-charging contactor KM2 are used in conjunction. When power is applied, the main contactor KM1 is in a disconnected state and the pre-charging contactor KM2 is closed; when the voltage difference across the main contactor KM1 drops below the safe value, the main contactor KM1 is closed, which can effectively avoid the arcing phenomenon caused by the large voltage difference across the main contactor KM1 after power is applied.

[0066] It should be noted that when the main contactor KM1 is in the disconnected state, the first end and the second end of the main contactor KM1 are disconnected, and the third end and the fourth end of the main contactor KM1 are disconnected; when the main contactor KM1 is in the closed state, the first end and the second end of the main contactor KM1 are connected, and the third end and the fourth end of the main contactor KM1 are connected; when the pre-charging contactor KM2 is in the disconnected state, the first end and the second end of the pre-charging contactor KM2 are disconnected, and the third end and the fourth end of the pre-charging contactor KM2 are disconnected; when the pre-charging contactor KM2 is in the closed state, the first end and the second end of the pre-charging contactor KM2 are connected, and the third end and the fourth end of the pre-charging contactor KM2 are connected.

[0067] On the basis of the above embodiments, in some embodiments, the input-output protection circuit 12 further includes: a current sensor TA1, an insulation detector IMD1, an insulation detector fuse F3, a voltage sensor TV1 and a voltage sensor fuse F4;

[0068] A first end of the current sensor TA1 is connected to a second end of the first isolating switch Q1, and a second end of the current sensor TA1 is connected to a first end of the main contactor KM1;

[0069] A first end of the insulation detector fuse F3 is connected to a first end of the main contactor KM1, a second end of the insulation detector fuse F3 is connected to a first end of the insulation detector IMD1, and a second end of the insulation detector IMD1 is connected to a third end of the main contactor KM1;

[0070] A first end of the voltage sensor fuse F4 is connected to a second end of the main contactor KM1 , a second end of the voltage sensor fuse F4 is connected to a first end of the voltage sensor TV1 , and a second end of the voltage sensor TV1 is connected to a fourth end of the main contactor KM1 .

[0071] In a specific implementation, the current sensor TA1 can check the charge and discharge current and transmit the current data to the host 13. The insulation detector IMD1 can detect the insulation resistance of the circuit, and the insulation detector fuse F3 can play a circuit protection role. The voltage sensor TV1 can detect the voltage at the output end of the input and output protection circuit 12, and the voltage sensor fuse F4 plays a circuit protection role.

[0072] On the basis of the above embodiments, in some embodiments, the heat dissipation device 15 includes: an air conditioning device HVAC, an air conditioning contactor KM3 and an air conditioning fuse F5;

[0073] The first end of the air conditioning contactor KM3 is connected to the first output end of the pre-charging circuit 121, and the second end of the air conditioning contactor KM3 is connected to the first end of the air conditioning fuse F5; the second end of the air conditioning fuse F5 is connected to the first end of the air conditioning device HVAC, and the second end of the air conditioning device HVAC is connected to the second output end of the pre-charging circuit 121.

[0074] In a specific implementation, the heat dissipation device 15 is mainly composed of an air conditioning device HVAC, an air conditioning contactor KM3 and an air conditioning fuse F5. Among them, the air conditioning device HVAC specifically includes a compressor, a condensing fan and a water cooling circulation pipeline, etc., which can dissipate heat for the supercapacitor 11. The air conditioning fuse F5 can play a role of fuse protection when the heat dissipation device 15 is overcurrent. The air conditioning contactor KM3 is the switch of the heat dissipation device 15, which is controlled by the host 13 to put the air conditioning device HVAC into operation.

[0075] Based on the above embodiments, in some embodiments, the number of energy storage boxes 10 is multiple;

[0076] Each energy storage box 10 is respectively arranged on both sides of the track beam limit at the bottom of the monorail train.

[0077] In order to better power the various systems of the monorail train, the number of energy storage boxes 10 in this solution can be multiple, and each energy storage box 10 is respectively arranged on both sides of the track beam limit at the bottom of the monorail train, which can reasonably utilize the bottom space of the monorail train without affecting the normal operation of the train.

[0078] Figure 4 This is a schematic diagram of the layout of the energy storage box provided in the embodiment of the utility model. Figure 4 As shown, in some embodiments, the energy storage box 10 includes a capacitor box 20, a heat dissipation system box 21 and an electrical component box 22;

[0079] The super capacitor 11 and the battery management system 14 are arranged in a capacitor box 20 ; the heat dissipation device 15 is arranged in a heat dissipation system box 21 ; the input / output protection circuit 12 and the host 13 are arranged in an electrical component box 22 .

[0080] In order to more reasonably place the energy storage box 10 under the vehicle, the energy storage box 10 is specifically divided into three parts: a capacitor box 20, a heat dissipation system box 21 and an electrical component box 22. Figure 4 As shown, the super capacitor 11 and the battery management system 14 are arranged in the capacitor box 20; the heat dissipation device 15 is arranged in the heat dissipation system box 21, which includes a heat dissipation condensation fan and a water cooling circulation pipeline; the input and output protection circuit 12 and the host 13 are arranged in the electrical component box 22. By arranging the various components of the energy storage box 10 in the capacitor box 20, the heat dissipation system box 21 and the electrical component box 22 respectively, the energy storage box 10 can be better arranged and managed, and it is convenient for the staff to overhaul.

[0081] In addition, in order to reduce the installation cost of the energy storage system and improve the management efficiency of the energy storage box 10, in some embodiments, the number of energy storage boxes 10 is two, and the energy storage box 10 includes multiple super capacitors 11. Figure 2 As shown, two energy storage boxes 10 can be arranged opposite to each other outside the track beam limit.

[0082] In addition, the supercapacitors 11 in the two energy storage boxes 10 are connected in series, which can improve the power supply efficiency. At the same time, since the supercapacitors 11 in the two energy storage boxes 10 are connected in series, only one group of input and output protection circuits 12 can be set, which is shared by the two energy storage boxes 10; not only the management efficiency of the supercapacitors 11 is improved, but also the circuit cost can be saved.

[0083] Finally, the utility model also provides a monorail train, including the monorail train energy storage system in the above-mentioned embodiment. Since the energy storage box is provided with a supercapacitor, an input and output protection circuit, a host, a battery management system and a heat dissipation device, and adopts a DC750V power supply standard, the electrical gap can be effectively reduced, thereby adapting to the installation of the energy storage system under the monorail train. On the other hand, the contactor and traction inverter box and the high-voltage and auxiliary inverter box powered by the energy storage system are respectively integrated with a traction inverter box and an output contactor box, as well as an auxiliary inverter box, a high-voltage electrical box, a fuse and a grounding switch box, thereby further reducing the volume of the traction system and the auxiliary system, and providing a larger layout space for the energy storage system. The energy storage box is specifically arranged outside the limit of the track beam, which can ensure the normal operation of the monorail train and solve the problem of the difficulty in installing the current monorail train energy storage system.

[0084] The above is a detailed introduction to the monorail train energy storage system and monorail train provided by the utility model. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the utility model.

[0085] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A monorail train energy storage system, characterized in that: include: An energy storage box arranged outside the limit of the track beam; The energy storage box is provided with a supercapacitor, an input and output protection circuit, a host, a battery management system and a heat dissipation device; The host is connected to the input-output protection circuit, a first end of the input-output protection circuit is connected to the power supply end of the supercapacitor, and a second end of the input-output protection circuit is connected to the contactor and the traction inverter box, the high voltage and auxiliary inverter box and the heat sink; The host is used to control the super capacitor to supply power to the contactor and traction inverter box, the high voltage and auxiliary inverter box and the heat sink by controlling the on and off of the input and output protection circuit; The heat dissipation device is used to dissipate heat for the super capacitor; The battery management system is connected to the supercapacitor and is used to monitor the electrical parameters of the supercapacitor and perform health management on the supercapacitor; Among them, the contactor and traction inverter box integrates the traction inverter box and the output contactor box; the high-voltage and auxiliary inverter box integrates the auxiliary inverter box, the high-voltage electrical box, the fuse and the grounding switch box; the energy storage box, the contactor and traction inverter box and the high-voltage and auxiliary inverter box all adopt the DC750V power supply standard.

2. The monorail train energy storage system according to claim 1, characterized in that: The input-output protection circuit comprises: a main fuse, a first isolating switch, a second isolating switch and a pre-charging circuit; The first end of the main fuse is connected to the negative electrode of the supercapacitor, the second end of the main fuse is connected to the first end of the second isolating switch, and the main fuse is used to melt when the input and output protection circuit is overcurrent; The first end of the first isolating switch is connected to the positive electrode of the supercapacitor, and the second end of the first isolating switch is connected to the first input end of the pre-charging loop; the second end of the second isolating switch is connected to the second input end of the pre-charging loop; the first isolating switch and the second isolating switch are used to control the on and off of the input and output protection circuit; The pre-charging circuit is used to reduce the circuit voltage difference when the input-output protection circuit is turned on under the control of the host; Among them, the first end of the main fuse and the first end of the first isolating switch together serve as the first end of the input-output protection circuit, and the first output end of the pre-charging loop and the second output end of the pre-charging loop together serve as the second end of the input-output protection circuit.

3. The monorail train energy storage system according to claim 2, characterized in that: The pre-charging circuit comprises: a main contactor, a pre-charging contactor, a pre-charging fuse, a first pre-charging resistor and a second pre-charging resistor; The first end of the main contactor is connected to the first end of the pre-charging fuse, the second end of the pre-charging fuse is connected to the first end of the pre-charging contactor, the second end of the pre-charging contactor is connected to the first end of the first pre-charging resistor and the first end of the second pre-charging resistor; the second end of the main contactor is connected to the second end of the first pre-charging resistor and the second end of the second pre-charging resistor; The third end of the main contactor is connected to the third end of the pre-charging contactor; the fourth end of the main contactor is connected to the fourth end of the pre-charging contactor; Among them, the common end formed by the first end of the main contactor and the first end of the pre-charging fuse serves as the first input end of the pre-charging circuit, and the common end formed by the third end of the main contactor and the third end of the pre-charging contactor serves as the second input end of the pre-charging circuit; the second end of the main contactor serves as the first output end of the pre-charging circuit, and the common end formed by the fourth end of the main contactor and the fourth end of the pre-charging contactor serves as the second output end of the pre-charging circuit.

4. The monorail train energy storage system according to claim 3, characterized in that: The input-output protection circuit further includes: a current sensor, an insulation detector, an insulation detector fuse, a voltage sensor and a voltage sensor fuse; The first end of the current sensor is connected to the second end of the first isolating switch, and the second end of the current sensor is connected to the first end of the main contactor; The first end of the insulation detector fuse is connected to the first end of the main contactor, the second end of the insulation detector fuse is connected to the first end of the insulation detector, and the second end of the insulation detector is connected to the third end of the main contactor; The first end of the voltage sensor fuse is connected to the second end of the main contactor, the second end of the voltage sensor fuse is connected to the first end of the voltage sensor, and the second end of the voltage sensor is connected to the fourth end of the main contactor.

5. The monorail train energy storage system according to claim 2, characterized in that: The heat dissipation device includes: an air conditioning device, an air conditioning contactor and an air conditioning fuse; The first end of the air conditioning contactor is connected to the first output end of the pre-charging circuit, and the second end of the air conditioning contactor is connected to the first end of the air conditioning fuse; the second end of the air conditioning fuse is connected to the first end of the air conditioning device, and the second end of the air conditioning device is connected to the second output end of the pre-charging circuit.

6. The monorail train energy storage system according to claim 1, characterized in that: The number of the energy storage boxes is multiple; Each of the energy storage boxes is respectively arranged on both sides of the track beam limit at the bottom of the monorail train.

7. The monorail train energy storage system according to claim 6, characterized in that: The energy storage box includes a capacitor box, a heat dissipation system box and an electrical component box; Among them, the supercapacitor and the battery management system are arranged in the capacitor box; the heat dissipation device is arranged in the heat dissipation system box; the input and output protection circuit and the host are arranged in the electrical component box.

8. The monorail train energy storage system according to claim 6, characterized in that: The number of the energy storage boxes is two, and the energy storage boxes contain a plurality of the supercapacitors.

9. The monorail train energy storage system according to claim 8, characterized in that: The supercapacitors in the two energy storage boxes are connected in series.

10. A monorail train, characterized in that: A monorail train energy storage system comprising any one of claims 1 to 9.

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