CN112721636A - Electric motor coach power supply system, electric motor coach and method - Google Patents
Electric motor coach power supply system, electric motor coach and method Download PDFInfo
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- CN112721636A CN112721636A CN202110076552.0A CN202110076552A CN112721636A CN 112721636 A CN112721636 A CN 112721636A CN 202110076552 A CN202110076552 A CN 202110076552A CN 112721636 A CN112721636 A CN 112721636A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a power supply system of an electric motor coach, the electric motor coach and a method, wherein the anode of a low-voltage power supply is connected with power supply ends of a liquid cooling unit and a BMS system and is connected with a vehicle control unit and a normal power end of a first DCDC converter through a first relay; the first DCDC converter and the activation end of the whole vehicle controller are connected with the positive pole of the low-voltage power supply through a second relay; the output power supply end of the first DCDC converter is connected with the BMS system and the power supply end of the liquid cooling unit; the constant-current end of the vehicle control unit and the first DCDC converter are respectively connected with the output power supply end of the second DCDC converter through the first relay and the second relay, the activation end of the second DCDC converter is connected with the charging interface, the first DCDC converter is connected with the high-voltage circuit after being connected with the auxiliary contactor in series, and the second DCDC converter is connected with the high-voltage circuit.
Description
Technical Field
The invention relates to the technical field of electric motor coaches, in particular to an electric motor coach power supply system, an electric motor coach and a method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Along with [ electric ] motor coach's development, people require more and more high to [ electric ] motor coach's performance, fill soon, put soon, the high life becomes the new requirement to power battery, power battery work's ambient temperature influences the performance very greatly, present more and more battery, the battery liquid cooling system has been installed to the passenger train producer, the inventor discovers, because of the passenger train has installed the hand and has dialled the switch, close the hand during charging and dial, the battery power has been disconnected, how to become the problem that needs the solution urgently in the work of charging in-process liquid cooling system.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a power supply system of an electric motor coach, which can ensure the normal work of a liquid cooling system of a power battery after a charging gun is plugged in a power supply of the whole coach or a vehicle is driven.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a power supply system for an electric motor coach, including a low-voltage power supply, a liquid cooling unit, a BMS system, a vehicle control unit, and a first DCDC converter; the positive electrode of the low-voltage power supply is connected with the power supply ends of the liquid cooling unit and the BMS system, and is connected with the vehicle control unit and the normal power end of the first DCDC converter through the normally closed contact of the first relay; the activation ends of the first DCDC converter and the whole vehicle controller are connected with the positive electrode of the low-voltage power supply through a normally closed contact of a second relay; the output power supply end of the first DCDC converter is connected with the BMS system and the power supply end of the liquid cooling unit; the vehicle control unit and a normal power end of the first DCDC converter are respectively connected with an output power supply end of the second DCDC converter through a normally open contact of the first relay and a normally open contact of the second relay, and an activation end of the second DCDC converter is connected with a charging interface connected to a high-voltage circuit; the first DCDC converter is connected with a high-voltage power supply in the high-voltage circuit after being connected with the auxiliary contactor in series, and the second DCDC converter is connected with the high-voltage power supply in the high-voltage circuit.
Furthermore, the low-voltage power supply is connected with the hand-operated switch and the ACC switch in series and then is connected with the normally closed contact of the electric interlocking relay in series, the normally closed contact of the electric interlocking relay is connected with the coil of the magnetic switch, the normally open contact of the magnetic switch is connected in series in a circuit between the low-voltage power supply and the activation end of the first DCDC converter, and the coil of the electric interlocking relay is connected with the power supply output end of the second DCDC converter.
Furthermore, the output power supply end of the first DCDC converter is connected with the positive electrode of the low-voltage power supply after being connected with the normally open contact of the ON gear relay in series, and the coil of the ON gear relay is connected with the positive electrode of the low-voltage power supply after being connected with the ON switch in series.
Further, the power supply output terminal of the second DCDC converter is connected to a charging power supply terminal of the BMS system.
Further, the coils of the first relay and the second relay are connected with the power supply output end of the second DCDC converter.
Furthermore, the charging activation end of the vehicle control unit is connected with the power supply output end of the second DCDC converter.
Further, the liquid cooling unit, the BMS system, the vehicle control unit and the first DCDC converter are connected with a CAN network of the vehicle, and the charging interface is connected with the BMS system through a charging CAN network.
Further, the low-voltage power supply adopts a vehicle-mounted 24V storage battery, and the high-voltage power supply adopts a high-voltage storage battery.
In a second aspect, an embodiment of the invention provides an electric motor coach, which is provided with the electric motor coach power supply system described in the first aspect.
In a third aspect, an embodiment of the present invention provides an operating method of the electric motor coach power supply system in the first aspect:
in the driving process, a low-voltage power supply is conducted with circuits of a liquid cooling unit and a BMS power supply end, a low-voltage power supply is conducted with circuits of a normal controller and a first DCDC converter normal power end, a low-voltage power supply is conducted with circuits of a first DCDC converter activation end, the liquid cooling unit is powered by the low-voltage power supply, a high-voltage circuit is conducted, an auxiliary contactor is closed, and the first DCDC converter supplies power to the liquid cooling unit and charges the low-voltage power supply;
in the charging process, the disconnection switches on low-voltage power supply and liquid cooling unit, the circuit of BMS supply terminal, switch on the circuit of low-voltage power supply and normal controller and the normal electricity end of first DCDC converter, the rifle that charges inserts the mouth that charges and activates second DCDC converter, second DCDC converter is to BMS system power supply, the normally open contact closure of first relay of simultaneous control and second relay, vehicle control unit and first DCDC converter are electrified, second DCDC converter work back, send the signal of charging for vehicle control unit, vehicle control unit sends the signal of charging for BMS system, BMS system control high voltage circuit switches on, first DCDC converter work, supply power to the liquid cooling unit. The invention has the beneficial effects that:
1. according to the power supply system, the liquid cooling unit can normally work in a running or charging state of the whole vehicle, so that the high-voltage power supply is always at the optimal working temperature, the charging and discharging multiplying power is ensured, and the service life of the power supply is prolonged.
2. The power supply system is provided with the interlocking relay, and the interlocking relay can be disconnected in the charging process, so that the vehicle cannot be electrified, and the charging safety of the vehicle is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of a low voltage circuit according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a high voltage circuit according to embodiment 1 of the present invention;
FIG. 3 is a flowchart of the operation of the driving process according to embodiment 3 of the present invention;
fig. 4 is a flowchart of the charging process according to embodiment 3 of the present invention;
the system comprises a 1.24V storage battery, a 2 hand-dialing switch, a 3 ACC switch, a 4 interlocking relay, a 5 first relay, a 6 second relay, a 7.3KWDCDC converter, a 8 vehicle controller, a 9 BMS system, a 10 liquid cooling unit, a 11 magnetic switch, a 12 charging port, a 13 charging CAN network, an 14.300WDCDC converter, a 15 vehicle CAN network, a 16 ON switch, a 17 ON gear relay, a 18 high-voltage storage battery, a 19 insulation module, a 20 auxiliary contactor, a 21 main positive contactor, a 22 main negative contactor, a 23 charging contactor, a 24 maintenance switch and a 25 sensor.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Just as the introduction of background art, the unable normal work of liquid cooling unit in the charging process of present [ electric ] motor coach, to the above-mentioned problem, this application has proposed an [ electric ] motor coach power supply system.
In an exemplary embodiment of the present application, as shown in fig. 1-2, an electric motor coach power supply system includes a low voltage circuit and a high voltage circuit.
The low-voltage circuit comprises a low-voltage power supply, a liquid cooling unit, a BMS system, a vehicle control unit and a first DCDC converter, wherein the low-voltage power supply adopts an on-vehicle 24V storage battery, the liquid cooling unit, the BMS system and the vehicle control unit adopt the existing electric passenger car, and the first DCDC converter adopts a 3KWDCDC converter.
The specific circuit connection mode of the low-voltage circuit is as follows:
the negative pole of the 24V storage battery 1 is grounded, a line led out from the positive pole is sequentially connected with the hand-dialing switch 2, the 200A resistor, the ACC switch 3, the normally closed contact of the interlocking relay 4 and the positive pole of the coil of the magnetic switch 11 in series, and the negative pole of the coil of the magnetic switch is grounded. Preferably, the magnetic switch adopts a large-current relay of 200A.
The line between the ACC switch and the 200A resistor leads out a first branch and a second branch.
Wherein many branch lines are drawn forth again to first branch road, one of them branch line is connected with the power supply end of liquid cooling unit 10 behind the series connection 30A resistance, the ground terminal ground connection of liquid cooling unit, another branch line is connected with the power supply end of BMS system 9 behind the series connection 15A resistance, the ground terminal ground connection of BMS system, the third branch line is connected with the output power supply end of 3KWDCDC converter 7, and be connected with the normal electricity end of vehicle control unit 8 through the normally closed contact of first relay 5, wherein it has 15A resistance to establish ties between the normal electricity end of vehicle control unit and the normally closed contact of first relay, the line portion between the normal electricity end of 15A resistance and vehicle control unit is connected with the normal electricity end of 3KWDCDC converter. And the ground terminals of the vehicle control unit and the 3KWDCDC converter are grounded.
Through the connection, the connection of the positive electrode of the 24V storage battery and the power supply end of the liquid cooling unit and the BMS system is realized, and the normal close contact of the first relay is connected with the normal power end of the whole vehicle controller and the first DCDC converter.
The second branch circuit is connected with the activation end of the 3KWDCDC after being sequentially connected with the normally open contact of the magnetic switch, the normally open contact of the ON gear relay 17 and the normally closed contact of the second relay in series, the coil anode of the ON gear relay is connected with the second branch circuit after being connected with the ON switch 16 in series, and the cathode of the ON gear relay is grounded.
Through the connection, the connection between the 3KWDCDC converter and the active end of the whole vehicle controller and the 24V storage battery is realized.
The power supply system further comprises a second DCDC converter, preferably, the second DCDC converter adopts a 300WDCDC converter 14, an output power supply end of the 300WDCDC converter is connected with a third branch and a fourth branch, the third branch is connected with a charging power supply end of the BMS system after being connected with a resistor 15A in series, the fourth branch leads out two branches, one branch is connected with a charging activation end of the whole vehicle controller after being connected with a resistor 5A in series, the other branch is connected with a coil anode of the interlocking relay, and a coil cathode of the interlocking relay is grounded.
The coil positive pole and the fourth branch road of first relay are connected, the negative pole ground connection, the normal electric end of vehicle control unit is connected with the fourth branch road through the normally open contact of first relay behind the series connection 15A resistance, the coil positive pole and the fourth branch road of second relay 6 are connected, the negative pole ground connection, the activation end of 3KWDCDC converter is connected with the fourth branch road through the normally open contact of second relay behind the series connection 5A resistance, and the activation end of 3KWDCDC converter is connected with the activation end of vehicle control unit.
The activation end of 300WDCDC is connected with the charging port 12, after the charging port is inserted into the charging gun, the 300WDCDC can be activated, and the charging port, the 3 KWDCC and the 300WDCDC are all connected into the high-voltage circuit.
In this embodiment, liquid cooling unit, BMS system, vehicle control unit and 3KWDCDC converter all are connected with whole car CAN network 15, CAN communicate through whole car CAN network, the mouth that charges is through charging CAN network 13 and BMS headtotail, CAN communicate through charging CAN network and BMS system.
The high-voltage circuit adopts the existing high-voltage circuit for the electric motor coach, the improvement is that a 300WDCDC converter is connected with a high-voltage power supply, a 3 KWDCC converter is connected with an auxiliary contactor in series and then connected with the high-voltage power supply, other connection modes adopt the connection mode of the existing high-voltage circuit for the electric motor coach, the high-voltage power supply adopts a high-voltage storage battery 18, a 300WDCDC converter, an insulation module 19, a charging port 12 and a 3 KWDCC converter which are connected in parallel and then connected with the high-voltage storage battery, concretely, the high-voltage storage battery adopts a high-voltage storage battery with 350 and 700V, the positive pole of the high-voltage storage battery is connected with a positive pole circuit, the negative pole of the high-voltage storage battery is connected with a negative pole circuit, four parallel branches are arranged between the positive pole and the negative pole, the 300WDCDC converter, the insulation module, the charging port and the 3 KWDCC converter are respectively arranged on the four branches, a, the auxiliary contactor is connected in parallel with the main positive contactor 21, a main negative contactor 22 is arranged on a negative circuit between a branch where the insulation module is located and a branch where the charging port is located, wherein a maintenance switch 24 and a sensor 25 are further arranged on a positive circuit and a negative circuit of the high-voltage storage battery respectively.
Example 2:
the embodiment discloses an electric motor coach, which is provided with the electric motor coach power supply system in the embodiment 1.
Example 3:
the embodiment discloses a working method of a power supply system of an electric motor coach, which comprises the following steps:
as shown in fig. 3, in the driving process, the hand-dial switch is closed in proper order, the ACC switch, the ON gear switch, liquid cooling unit and BMS system are supplied with power by the 24V battery, the normally closed contact of first relay and second relay is electrified at the normal electric end of vehicle control unit and 3 kwcdc converter, simultaneously, the activation end of 3 kwcdc converter and vehicle control unit is electrified, vehicle control unit and 3 kwcdc converter are in the state of CAN communicating this moment, carry out the communication interaction through vehicle CAN communication network, under the trouble-free condition of insulating module, close main positive contactor in proper order, main negative contactor and auxiliary contactor, switch ON the high-voltage circuit, 3 kwcdc CAN work, supply power for 24V battery and liquid cooling unit after the work, the liquid cooling system judges whether there is the liquid cooling demand according to the monomer temperature, control liquid cooling unit works.
As shown in fig. 4, during the charging process, the ON switch, the ACC switch, the manual switch are sequentially turned off, the charging gun is inserted, the 300WDCDC converter is activated by the a + and a-feelers at the charging opening, the 300WDCDC converter is directly connected to the high-voltage battery, the high-voltage battery starts to operate to directly supply power to the BMS system, the coils of the first relay and the second relay are energized, the normally open contact is closed, the normally energized terminals of the vehicle controller and the 3 kwcdc converter are energized, the activated terminals of the 3 kwcdc converter and the vehicle controller are energized, after the 300WDCDC converter operates, the charging signal CAN be sent to the vehicle controller, the vehicle controller sends the charging status to the vehicle CAN network, after the BMS system receives the charging signal, the main negative contactor and the auxiliary contactor are controlled to be closed under the condition that the insulation module has no fault, at this moment, the 3 kwcdc converter CAN operate, and the BMS system judges whether a liquid cooling demand exists according to the temperature of the monomer during charging and controls the liquid cooling unit to work.
In the charging process, after the 300WDCDC converter works, the normally closed contact of the interlocking relay is disconnected, so that the vehicle cannot be electrified, and the charging safety of the vehicle is ensured.
By adopting the power supply system of the embodiment, the liquid cooling unit can normally work when the whole vehicle is running or in a charging state, so that the high-voltage power supply is always at the optimal working temperature, the charging and discharging multiplying power is ensured, and the service life of the power supply is prolonged.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A power supply system of an electric motor coach is characterized by comprising a low-voltage power supply, a liquid cooling unit, a BMS system, a vehicle control unit and a first DCDC converter; the positive electrode of the low-voltage power supply is connected with the power supply ends of the liquid cooling unit and the BMS system and is connected with the vehicle control unit and the normal power end of the first DCDC converter through the normally closed contact of the first relay; the activation ends of the first DCDC converter and the whole vehicle controller are connected with the positive electrode of the low-voltage power supply through a normally closed contact of a second relay; the output power supply end of the first DCDC converter is connected with the BMS system and the power supply end of the liquid cooling unit; the vehicle control unit and a normal power end of the first DCDC converter are respectively connected with an output power supply end of the second DCDC converter through a normally open contact of the first relay and a normally open contact of the second relay, and an activation end of the second DCDC converter is connected with a charging interface connected to a high-voltage circuit; the first DCDC converter is connected with a high-voltage power supply in the high-voltage circuit after being connected with the auxiliary contactor in series, and the second DCDC converter is connected with the high-voltage power supply in the high-voltage circuit.
2. The electric motor coach power supply system as claimed in claim 1, wherein the low voltage power supply is connected in series with the hand-pulling switch and the ACC switch and then connected in series with a normally closed contact of an electric interlock relay, the normally closed contact of the electric interlock relay is connected with a coil of a magnetic switch, the normally open contact of the magnetic switch is connected in series in a line between the low voltage power supply and the activation terminal of the first DCDC converter, and the coil of the electric interlock relay is connected with the power supply output terminal of the second DCDC converter.
3. The electric bus power supply system as claimed in claim 1, wherein the output power supply terminal of the first DCDC converter is connected in series with the normally open contact of the ON-level relay and then connected with the positive electrode of the low-voltage power supply, and the coil of the ON-level relay is connected in series with the ON-switch and then connected with the positive electrode of the low-voltage power supply.
4. The power supply system of claim 1, wherein the power supply output terminal of the second DCDC converter is connected to a charging power supply terminal of the BMS system.
5. The electric motor coach power supply system as claimed in claim 1, wherein the coils of the first relay and the second relay are connected to the power supply output terminal of the second DCDC converter.
6. The electric bus power supply system as claimed in claim 1, wherein the charging active terminal of the vehicle control unit is connected to the power supply output terminal of the second DCDC converter.
7. The electric bus power supply system as claimed in claim 1, wherein the liquid cooling unit, the BMS system, the vehicle controller and the first DCDC converter are connected to a vehicle CAN network, and the charging interface is connected to the BMS system through a charging CAN network.
8. The electric bus power supply system as claimed in claim 1, wherein the low voltage power supply adopts an on-board 24V battery, and the high voltage power supply adopts a high voltage battery.
9. An electric motor coach provided with the electric motor coach power supply system as set forth in any one of claims 1 to 8.
10. A method of operating a power supply system for an electric motor coach according to any one of claims 1 to 8, characterized by:
in the driving process, a low-voltage power supply is conducted with circuits of a liquid cooling unit and a BMS power supply end, a low-voltage power supply is conducted with circuits of a normal controller and a first DCDC converter normal power end, a low-voltage power supply is conducted with circuits of a first DCDC converter activation end, the liquid cooling unit is powered by the low-voltage power supply, a high-voltage circuit is conducted, an auxiliary contactor is closed, and the first DCDC converter supplies power to the liquid cooling unit and charges the low-voltage power supply;
in the charging process, the disconnection switches on low-voltage power supply and liquid cooling unit, the circuit of BMS supply terminal, switch on the circuit of low-voltage power supply and normal controller and the normal electricity end of first DCDC converter, the rifle that charges inserts the mouth that charges and activates second DCDC converter, second DCDC converter is to BMS system power supply, the normally open contact closure of first relay of simultaneous control and second relay, vehicle control unit and first DCDC converter are electrified, second DCDC converter work back, send the signal of charging for vehicle control unit, vehicle control unit sends the signal of charging for BMS system, BMS system control high voltage circuit switches on, first DCDC converter work, supply power to the liquid cooling unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076552.0A CN112721636B (en) | 2021-01-20 | 2021-01-20 | Electric motor coach power supply system, electric motor coach and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076552.0A CN112721636B (en) | 2021-01-20 | 2021-01-20 | Electric motor coach power supply system, electric motor coach and method |
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| CN112721636A true CN112721636A (en) | 2021-04-30 |
| CN112721636B CN112721636B (en) | 2022-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407608A (en) * | 2022-01-26 | 2022-04-29 | 中通客车股份有限公司 | Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach |
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| JP2020036465A (en) * | 2018-08-30 | 2020-03-05 | トヨタ自動車株式会社 | Vehicular power supply system |
| CN111361418A (en) * | 2020-03-13 | 2020-07-03 | 清华大学天津高端装备研究院洛阳先进制造产业研发基地 | Power battery power supply system for rail engineering vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407608A (en) * | 2022-01-26 | 2022-04-29 | 中通客车股份有限公司 | Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach |
| CN114407608B (en) * | 2022-01-26 | 2023-06-13 | 中通客车股份有限公司 | Electric motor coach integrated liquid cooling air conditioner control method and system and electric motor coach |
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