CN210591284U - New forms of energy passenger train overhead thermal control system - Google Patents
New forms of energy passenger train overhead thermal control system Download PDFInfo
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- CN210591284U CN210591284U CN201921000547.6U CN201921000547U CN210591284U CN 210591284 U CN210591284 U CN 210591284U CN 201921000547 U CN201921000547 U CN 201921000547U CN 210591284 U CN210591284 U CN 210591284U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model relates to a new forms of energy passenger train overhead thermal control system, this thermal control system includes interconnect's overhead air conditioner thermal control subsystem, battery thermal control subsystem and the automatically controlled subsystem of motor, overhead air conditioner thermal control subsystem includes the compressor, the air conditioner evaporimeter, plate heat exchanger and air conditioner condenser, the compressor is connected through relief valve and high-voltage switch and the a interface with the cross valve in proper order, the c interface of cross valve is connected through low-voltage switch and vapour and liquid separator and with the compressor in proper order with another return circuit, the b interface of cross valve is connected with the sight glass behind air conditioner evaporimeter and plate heat exchanger respectively, the sight glass is connected with the d interface of cross valve behind desicator and air conditioner condenser in proper order, the air conditioner condenser is connected with battery thermal control subsystem and the automatically controlled subsystem of motor respectively through the cooling rubber tube in addition. Compared with the prior art, the utility model has the advantages of do not account for space, fault rate is low.
Description
Technical Field
The utility model belongs to the technical field of car thermal control technique and specifically relates to a new forms of energy passenger train overhead thermal control system is related to.
Background
At present, a battery thermal management technology adopted by a new energy passenger car mainly adopts a technical scheme of an independent air conditioning unit. This technical scheme has been equipped with one set of air conditioning unit alone for the battery of new forms of energy passenger train, and summer is the battery cooling, for the battery heating winter to guarantee the stability of battery temperature. However, according to the technical scheme, an extra air conditioner installation space needs to be reserved for the whole vehicle, so that not only is the occupied space increased, but also the weight of the whole vehicle is increased, and the whole simplified design, energy conservation and consumption reduction of the new energy passenger vehicle are not facilitated.
The air conditioner is an important energy consumption accessory of a new energy bus, and can seriously affect the cruising ability of the whole bus and the riding comfort. At present, a set of heat pump air conditioner is adopted for refrigerating and heating of a new energy bus, so that the air conditioner cannot achieve the highest energy efficiency when the air conditioner is used for refrigerating or heating, and particularly, the energy efficiency is lower when the air conditioner is used for heating: because the hot air of the air conditioner is blown out from the air duct at the top of the vehicle, the hot air density is lower and is gathered to the upper part of the carriage, so that the temperature of the lower part of the carriage is lower, the comfort of passengers is influenced, the energy consumption of the air conditioner is increased, and the cruising ability of the whole vehicle is further influenced. Therefore, the existing new energy passenger car has the following defects in the heat management technology of the carriage and the battery: (1) the cost of independently setting up battery heat management unit is high, and needs extra installation space, can increase whole car weight, is unfavorable for the energy saving and consumption reduction of new forms of energy passenger train. (2) The heat pump type electric air conditioner is adopted for refrigerating and heating the carriage, the highest energy efficiency of the air conditioner cannot be achieved due to the fact that both the refrigerating and the heating are required, and the hot air of the air conditioner is blown out of the roof air duct, so that energy conservation of a vehicle is not facilitated, and riding comfort is not facilitated. (3) The heat management of the carriage and the battery of the whole vehicle is separated independent equipment, the centralized heat management of the whole vehicle is not realized, and the energy waste is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a new forms of energy passenger train overhead thermal control system in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
an overhead thermal control system of a new energy bus comprises an overhead air-conditioning thermal control subsystem, a battery thermal control subsystem and a motor electrical control subsystem which are mutually connected, the overhead air-conditioning thermal control subsystem comprises a compressor, an air-conditioning evaporator, a plate heat exchanger and an air-conditioning condenser, the compressor is connected with the interface a of the four-way valve through a pressure relief valve and a high-pressure switch in sequence, the interface c of the four-way valve is connected with the compressor through a low-pressure switch and a gas-liquid separator in sequence through another loop, the interface b of the four-way valve is respectively connected with a liquid viewing mirror after passing through the air conditioner evaporator and the plate heat exchanger, the sight glass is connected with a d interface of the four-way valve after sequentially passing through a dryer and the air conditioner condenser, the air conditioner condenser is connected with the battery thermal control subsystem and the motor electric control subsystem through cooling rubber pipes respectively.
Furthermore, a first electromagnetic valve is further connected and arranged at the connecting position between the air conditioner evaporator and the interface b of the four-way valve, and a first electronic expansion valve is further connected and arranged at the connecting position between the air conditioner evaporator and the liquid viewing mirror.
Furthermore, a second electromagnetic valve is further connected and arranged at the connecting position between the plate heat exchanger and the interface b of the four-way valve, and a second electronic expansion valve is further connected and arranged at the connecting position between the plate heat exchanger and the liquid viewing mirror.
Further, the automatically controlled subsystem of motor includes ATS, first water pump, the automatically controlled all-in-one controller of motor and the first water tank of series connection closed loop connection each other, air conditioner condenser passes through the cooling rubber tube and respectively through the third solenoid valve with the whole car thermal control return water mouth and the whole car thermal control delivery port of the automatically controlled subsystem of motor are connected.
Furthermore, the battery thermal control subsystem comprises a power battery pack, a fourth electromagnetic valve, a second water pump, a second water tank and the plate heat exchanger which are connected in series in a closed-loop manner, and the air-conditioning condenser is directly connected with an air-conditioning water outlet and an air-conditioning water inlet of the battery thermal control subsystem through the cooling rubber pipe.
Further, the compressor adopts a positive displacement compressor, a rotary compressor or a scroll compressor.
Furthermore, a connecting pipeline in the overhead air-conditioning thermal control subsystem adopts a refrigerant pipeline.
Furthermore, the air conditioner evaporator adopts a parallel flow type air conditioner evaporator, and the air conditioner condenser adopts a pipe belt type air conditioner condenser.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the utility model discloses the system is owing to integrate the thermal control system of triplex, has shared partly subassembly, consequently does not account for extra installation space, does benefit to whole car design.
(2) The utility model discloses parts such as system sharing compressor, condenser, low price to whole owing to set up in passenger train overhead air conditioner, the maintenance is simple and convenient.
(3) The utility model discloses adopted electronic expansion valve autonomous development control program in the system, can be according to the battery load change often, the refrigeration capacity is adjusted to the accuracy, realizes the constant control to the temperature, makes the battery be in best operating temperature always.
(4) The utility model discloses the system is owing to it is wide to integrate application scope with the thermal control system of triplex: different types of batteries have different cooling capacity requirements and can reach the cooling capacity adjusting range of 2-10 kw.
(5) The utility model discloses the system refrigerates fast: to the first start-up, especially under high temperature, can realize the rapid cooling of carriage and battery, rational distribution: the cold quantity requirement of the battery is preferentially ensured, and the cold quantity provided for the carriage and the battery is reasonably distributed in the running process of the vehicle.
(6) The utility model discloses system reliability is high: the problems of difficult oil return, low-pressure protection and the like under severe working conditions are solved, and the reliability of the compressor is ensured.
Drawings
To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. Also, the relative positions and sizes of the respective portions shown in the drawings are exemplary, and should not be understood as uniquely determining positional or dimensional relationships between the respective portions.
Fig. 1 is a schematic diagram of the system structure of the present invention;
in the figure, 1 is a compressor, 2 is an air conditioner evaporator, 3 is a plate heat exchanger, 4 is an air conditioner condenser, 5 is a pressure release valve, 6 is a high-pressure switch, 7 is a four-way valve, 8 is a low-pressure switch, 9 is a gas-liquid separator, 10 is a liquid viewing mirror, 11 is a dryer, 12 is a cooling rubber tube, 13 is a first electromagnetic valve, 14 is a first electronic expansion valve, 15 is a second electromagnetic valve, 16 is a second electronic expansion valve, 17 is an ATS, 18 is a first water pump, 19 is a motor-electric control all-in-one controller, 20 is a first water tank, 21 is a third electromagnetic valve, 22 is a power battery pack, 23 is a fourth electromagnetic valve, 24 is a second water pump, 25 is a second water tank, and 26 is a refrigerant pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1, the overall system structure of the present invention is shown, the thermal control system includes an interconnected top-mounted air-conditioning thermal control subsystem, the connecting pipeline in the top-mounted air-conditioning thermal control subsystem adopts a refrigerant pipeline 26, a battery thermal control subsystem and a motor electrical control subsystem, the top-mounted air-conditioning thermal control subsystem includes a compressor 1, an air-conditioning evaporator 2, a plate heat exchanger 3 and an air-conditioning condenser 4, the compressor 1 sequentially passes through a pressure release valve 5 and a high-voltage switch 6 and is connected with an a interface of a four-way valve 7, a c interface of the four-way valve 7 sequentially passes through a low-voltage switch 8 and a gas-liquid separator 9 by another loop and is connected with the compressor 1, a b interface of the four-way valve 7 respectively passes through the air-conditioning evaporator 2 and the plate heat exchanger 3 and is connected with a sight glass 10, the sight glass 10, the air-conditioning condenser 4 is connected with the battery thermal control subsystem and the motor electrical control subsystem through a cooling rubber pipe 12, wherein a first electromagnetic valve 13 is further connected and arranged at the connection position between the air-conditioning evaporator 2 and the interface b of the four-way valve 7, a first electronic expansion valve 14 is further connected and arranged at the connection position between the air-conditioning evaporator 2 and the liquid viewing mirror 10, a second electromagnetic valve 15 is further connected and arranged at the connection position between the plate heat exchanger 3 and the interface b of the four-way valve 7, a second electronic expansion valve 16 is further connected and arranged at the connection position between the plate heat exchanger 3 and the liquid viewing mirror 10, the motor electrical control subsystem comprises an ATS (automatic transfer switching)17, a first water pump 18, a motor electrical control multi-in-one controller 19 and a first water tank 20 which are connected in series and in a closed-loop manner, the air-conditioning condenser 4 is connected with a thermal control water return port and a thermal control water outlet of the whole vehicle of the motor electrical control subsystem through the cooling rubber pipe 12, the battery thermal control subsystem comprises a power battery pack 22, a fourth electromagnetic valve 23, a second water pump 24, a second water tank 25 and a plate heat exchanger 3 which are connected in series in a closed loop manner, the air-conditioning condenser 4 is directly connected with an air-conditioning water outlet and an air-conditioning water inlet of the battery thermal control subsystem through a cooling rubber pipe 12, and the upper circle and the lower circle of the battery thermal control subsystem part in the figure correspond.
In the present embodiment, the compressor 1 is a positive displacement, rotary, or scroll compressor; the function of compressing and driving the refrigerant is realized through four processes of compression, exhaust, expansion and air intake; the air-conditioning condenser 4 is of a pipe belt type structure; the gas or the steam can be converted into the liquid, and the heat in the pipe can be quickly transferred to the nearby air; the air-conditioning evaporator 2 is of a parallel flow type, and low-temperature condensed liquid can exchange heat with external air through the evaporator, gasify and absorb heat to achieve the refrigeration effect; the plate heat exchanger 3 is of a pipe-belt structure and is a high-efficiency heat exchanger formed by stacking corrugated metal sheets; all electronic expansion valves are electronic temperature and pressure sensing type electromagnetic valves, and the electronic expansion valves control the voltage or current applied to the expansion valves by utilizing electric signals generated by regulated parameters, thereby achieving the purpose of regulating the liquid supply amount.
The pressure relief valve 5 can be automatically opened and closed according to the working pressure of the system, and is generally arranged on equipment or a pipeline of a closed system to protect the safety of the system. When the pressure in the equipment or the pipeline exceeds the set pressure of the safety valve, the pressure relief valve is automatically opened, the medium pressure in the equipment or the pipeline is ensured to be below the set pressure, the equipment and the pipeline are protected, and accidents are prevented. The high-low pressure switch is a pressure switch for detecting the pressure of refrigerant in the system, and mainly has the functions of detecting whether the pressure of the system is normal or not, when the pressure exceeds an allowable range, the pressure switch acts and transmits an abnormal signal to the air conditioner controller, and the air conditioner controller stops the work of the refrigerating system after processing and displays a fault. The low-pressure protection detects that the return air pressure in the system is lower than 0.05MPA switching action, and the low-pressure protection is used for preventing the compressor from being damaged due to the fact that no refrigerant runs in the system. The high-pressure protection detects that the exhaust pressure is higher than 3.5MPA switching action, and the high-pressure protection is used for preventing the damage of a compressor or a burst pipeline caused by excessive refrigerant in a system and poor heat dissipation of a condenser. The gas-liquid separator 9 is arranged at the air inlet of the compressor; the liquid-storage type compressor has the effects of preventing the compressor air inlet from sucking liquid refrigerant to generate liquid impact and damaging the compressor and simultaneously having a liquid-storage function. The dryer 11 is used for absorbing water in the refrigeration system, blocking impurities in the system from passing through, and preventing ice blockage and dirty blockage of pipelines of the refrigeration system. Since the most easily clogged part of the system is the capillary tube (or the expansion valve), a dry filter is usually installed between the condenser and the capillary tube (or the expansion valve). The sight glass 10 is installed on an outlet pipeline of the dryer 11, and the dryer 11 can absorb moisture, so that the color of the inside of the sight glass 10 is green under normal conditions, and once the dryer 11 fails and cannot absorb moisture, the display paper turns yellow. At this time, the dryer 11 needs to be replaced, and after the dryer 11 is replaced and vacuumized, the color of the display paper is restored to the normal color, namely green.
The four-way valve 7 is a control valve with four oil ports, the four-way valve is an indispensable component in refrigeration equipment, the working principle is that when a solenoid valve coil is in a power-off state, a pilot slide valve moves left under the drive of a right compression spring, high-pressure gas enters a capillary tube and then enters a right piston cavity, on the other hand, gas in the left piston cavity is discharged, due to the fact that pressure difference exists at two ends of a piston, the piston and a main slide valve move left, an exhaust pipe is communicated with an outdoor unit connecting pipe, the other two connecting pipes are communicated, a refrigeration cycle is formed, and all control solenoid valves are solenoid valves with the capacity of controlling the on-off of refrigerant and.
In addition, in this embodiment, the water tank is made of aluminum, the refrigerant pipeline 26 is an aluminum copper pipe, the burst pressure of the aluminum copper pipe satisfies the operating pressure by more than 5 times, all electronic expansion valves adopt an external balance mode, the maximum working temperature of the liquid sight glass 10 is 80 ℃, the maximum working pressure is 35bar, the pressure relief of the pressure relief valve 5 is more than 31bar, and the refrigerant adopts R134 a-tetrafluoroethane (CH2FCF3), the boiling point: -26.5 ℃ and the solidification temperature-101.1 ℃.
In this embodiment, as shown in fig. 1, different working conditions can be divided, and the following description is now made for various working conditions:
aiming at high environmental temperature in summer and when the power battery of the whole vehicle has refrigerating capacity demand, the refrigerant coming out of the air conditioner condenser is divided into two paths in a mode of being connected with the air conditioner evaporator in parallel, and one path enters the evaporator through the electronic expansion valve to cool the air in the vehicle; one path enters a plate through an electronic expansion valve for exchanging, and heat-conducting liquid is cooled; finally, the refrigerant is merged back to the compressor to form a refrigerant cycle. The heat-conducting liquid enters the plate under the action of the water pump to be cooled and then returns to the interior of the battery pack to release cold energy, so that heat-conducting liquid circulation is formed. According to the scheme, the air conditioner can automatically distribute the refrigerating capacity to the power battery on the premise that the refrigerating capacity requirement of the passenger compartment is met;
at the moment, an inlet and outlet electromagnetic valve and an air conditioner condenser control electromagnetic valve of the whole vehicle heat management control are closed in the whole process, and a battery heat management control electromagnetic valve, an air conditioner condenser control electromagnetic valve and a plate heat exchanger electromagnetic valve are opened in the whole process;
when the power battery of the whole vehicle has no refrigerating capacity demand, the compressor can work independently to refrigerate the passenger compartment, and if the battery needs refrigerating, the air conditioner can flexibly and changeably control the plate type heat exchanger to control the opening and closing of the electromagnetic valve.
When the environmental temperature is low in winter, the whole vehicle heat management control electromagnetic valve, the air conditioner condenser control electromagnetic valve and the battery heat management control electromagnetic valve are opened, the plate type heat exchanger control electromagnetic valve is closed, at the moment, the electric control heat management of the motor and the battery heat management can jointly provide heat for defrosting of the air conditioner condenser, and meanwhile, warm air can be provided for a carriage in an auxiliary mode.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a new forms of energy passenger train overhead thermal control system, its characterized in that, this thermal control system include interconnect's overhead air conditioner thermal control subsystem, battery thermal control subsystem and the automatically controlled subsystem of motor, overhead air conditioner thermal control subsystem includes compressor (1), air conditioner evaporimeter (2), plate heat exchanger (3) and air conditioner condenser (4), compressor (1) is in proper order through relief valve (5) and high-voltage switch (6) and is connected with the a interface of cross valve (7), the c interface of cross valve (7) with another return circuit in proper order through low-voltage switch (8) and vapour and liquid separator (9) and with compressor (1) is connected, the b interface of cross valve (7) passes through respectively air conditioner evaporimeter (2) with plate heat exchanger (3) back is connected with sight glass (10), sight glass (10) in proper order through desicator (11) with air conditioner condenser (4) back with the b interface of cross valve (7) is connected And d, the interface is connected, and the air conditioner condenser (4) is respectively connected with the battery thermal control subsystem and the motor electric control subsystem through a cooling rubber tube (12).
2. The new energy bus overhead thermal control system as claimed in claim 1, wherein a first solenoid valve (13) is further connected to a connection position between the air conditioner evaporator (2) and a b port of the four-way valve (7), and a first electronic expansion valve (14) is further connected to a connection position between the air conditioner evaporator (2) and the liquid viewing mirror (10).
3. The overhead thermal control system of the new energy bus according to claim 1, wherein a second solenoid valve (15) is further connected to a connection position between the plate heat exchanger (3) and a b port of the four-way valve (7), and a second electronic expansion valve (16) is further connected to a connection position between the plate heat exchanger (3) and the liquid sight glass (10).
4. The overhead thermal control system of the new energy bus according to claim 1, wherein the electric motor control subsystem comprises an ATS (17), a first water pump (18), an electric motor control all-in-one controller (19) and a first water tank (20) which are connected in series in a closed loop manner, and the air conditioner condenser (4) is connected with a whole bus thermal control water return port and a whole bus thermal control water outlet of the electric motor control subsystem through the cooling rubber pipe (12) and a third electromagnetic valve (21) respectively.
5. The new energy bus overhead thermal control system as claimed in claim 1, wherein the battery thermal control subsystem comprises a power battery pack (22), a fourth electromagnetic valve (23), a second water pump (24), a second water tank (25) and the plate heat exchanger (3) which are connected in series in a closed loop manner, and the air conditioner condenser (4) is directly connected with an air conditioner water outlet and an air conditioner water inlet of the battery thermal control subsystem through the cooling rubber pipe (12).
6. The new energy bus overhead thermal control system as claimed in claim 1, wherein the compressor (1) is a positive displacement compressor, a rotary compressor or a scroll compressor.
7. The new energy bus overhead thermal control system as claimed in claim 1, wherein the connecting pipeline in the overhead air-conditioning thermal control subsystem is a refrigerant pipeline (26).
8. The new energy bus overhead thermal control system as claimed in claim 1, wherein the air conditioner evaporator (2) is a parallel flow air conditioner evaporator, and the air conditioner condenser (4) is a tube-in-tube air conditioner condenser.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000547.6U CN210591284U (en) | 2019-06-27 | 2019-06-27 | New forms of energy passenger train overhead thermal control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921000547.6U CN210591284U (en) | 2019-06-27 | 2019-06-27 | New forms of energy passenger train overhead thermal control system |
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| CN210591284U true CN210591284U (en) | 2020-05-22 |
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| CN201921000547.6U Active CN210591284U (en) | 2019-06-27 | 2019-06-27 | New forms of energy passenger train overhead thermal control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226211A1 (en) * | 2022-05-27 | 2023-11-30 | 宇通客车股份有限公司 | New energy bus |
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2019
- 2019-06-27 CN CN201921000547.6U patent/CN210591284U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226211A1 (en) * | 2022-05-27 | 2023-11-30 | 宇通客车股份有限公司 | New energy bus |
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Effective date of registration: 20210512 Granted publication date: 20200522 |