CN213705237U - Battery cooling device special for electric public transport system - Google Patents
Battery cooling device special for electric public transport system Download PDFInfo
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- CN213705237U CN213705237U CN202021700792.0U CN202021700792U CN213705237U CN 213705237 U CN213705237 U CN 213705237U CN 202021700792 U CN202021700792 U CN 202021700792U CN 213705237 U CN213705237 U CN 213705237U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
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Abstract
The utility model relates to a special battery cooling device for an electric public transport system, which is a split type cooling device and comprises a vehicle-mounted cooling device and an external cooling unit; the external cooling unit is fixed at the charging station, is controlled by the PLC control system, is connected with the vehicle-mounted cooling device through the quick connector, works while charging, reads battery temperature information through a charging CAN line, and accurately regulates and controls the working temperature range of the battery pack through closed-loop control. The utility model discloses cooling when power battery charges, not consuming power battery's electric quantity to because this refrigerating unit is external, the effectual whole car weight that has reduced not only can be in succession for different vehicle cooling, also can cool off the battery of a plurality of cars simultaneously, improved battery cooling unit's utilization efficiency. The problem of the overheated phenomenon of power battery that appears in the bus operation in summer in-process has been solved, can't accomplish all-weather work when having avoided the vehicle operation in summer is solved.
Description
Technical Field
The utility model discloses mainly be applied to the electric bus battery cooling, be applicable to the electronic public transit operation of fixed route, it is huge to maintaining electric motor car safety and stability operation effect. The battery cooling air conditioning unit is characterized by low cost and universality, and can achieve the effect of cooling the battery without adding the battery cooling air conditioning unit on the whole vehicle.
Background
With the increasing requirements of the country on environmental protection, new energy automobiles gradually replace the mainstream direction of the traditional fuel automobile exhibition. In particular to the field of public transportation, all newly added and replaced buses are basically new energy electric vehicles. Because the power battery belongs to electrochemical energy storage, the environment and the temperature in the battery pack have great influence on the overall performance of the power battery, including the charge-discharge efficiency, the capacity, the power, the safety and the service life of the battery, and therefore a power battery thermal management system is required to be introduced to carry out low-temperature heating, high-temperature heat dissipation and thermal insulation management on the battery. However, the power battery cooling system mounted on the vehicle is not popular because of high cost and limited mounting space.
Through the analysis of bus operation data in recent years, the temperature rise of the power battery is obvious during charging, and the temperature rise amplitude during normal operation is far smaller than that during charging. The running characteristic of the electric bus is that the electric bus is charged 3-5 times every day, the frequency is obviously higher than that of common commercial vehicles and passenger cars, the high temperature of the battery is caused when the bus runs in summer, the battery is easy to overheat and out of control, and the safety is influenced. Therefore, as long as the temperature rise of the power battery is well controlled when the electric bus is charged, the pain point of the electric bus running in summer can be solved.
Therefore, the cooling when the power battery is charged is well done, and the cooling has an important effect on the safe operation of the electric bus.
Disclosure of Invention
The utility model provides a centralized public power battery cooling system for solving the problem of battery overheating caused by low loading rate due to high cost of electric vehicle bus cooling system and insufficient installation space of the whole vehicle in the prior art, which cools down the power battery when the electric vehicle returns to the station for charging; and when the electric vehicle is out of the station for operation, the supercooled cooling liquid is used for storing energy to cool the battery.
The utility model discloses a realize through following technical scheme:
the cooling device for the special battery for the electric public transport system comprises a vehicle-mounted battery pack cooling device and an external cooling unit; the external cooling unit is fixed on a charging station and comprises a plate heat exchanger, a compressor, a condenser, a liquid storage tank, a cooling pipeline, a water mixing valve and a PLC (programmable logic controller) control system which are connected through pipelines; the refrigerant outlet of the plate heat exchanger is connected with the inlet of the compressor, the outlet of the compressor is connected with the inlet end of the condenser, the outlet end of the condenser is connected with the inlet of the liquid storage tank, and the outlet of the liquid storage tank is connected with the inlet of the plate heat exchanger through a thermal expansion valve; the cooling pipeline comprises a main water outlet pipeline, a water outlet branch, a water return branch and a main water return pipeline; one end of the main water outlet pipeline is connected with a water outlet of the plate heat exchanger, and the other end of the main water outlet pipeline is respectively connected with a plurality of water outlet branches; the water return branch is matched with the water outlet branch and is provided with a plurality of paths, one end of each path is connected with the main water return pipeline, and the other end of each path is connected with the water outlet end of the vehicle-mounted battery pack cooling device; the water return end of the main water return pipeline is connected with a water return port of the plate heat exchanger; the water mixing valve is matched with the water outlet branch and the water return branch and is respectively arranged between the corresponding water outlet branch and the corresponding water return branch, the water outlet end is connected with the water outlet branch, and the water return end is connected with the water return branch; the PLC control system controls the compressor and the condenser, reads battery temperature information through a charging CAN line, and accurately regulates and controls the working temperature range of the battery pack through closed-loop control.
The special battery cooling device of electronic public transit system, wherein: the water inlet end and the water outlet end of the vehicle-mounted battery pack cooling device are both provided with quick connectors; and the ports of the water outlet branch and the water return branch are respectively provided with a normally closed quick connection interface which is respectively connected with a quick connection joint of a water inlet end and a water outlet end of the vehicle-mounted battery pack cooling device.
The special battery cooling device of electronic public transit system, wherein: the compressor is driven by a motor; a pressure switch is arranged at the inlet end of the condenser, and temperature and flow sensors are arranged at the outlet end of the condenser and the water outlet of the plate heat exchanger; the main water return pipeline is provided with a water pump and is connected with the liquid storage tank; each water outlet branch and each water return branch are provided with a temperature flow sensor; and the PLC control system is electrically connected with the motor, the condenser, the water pump, the pressure switch and the temperature flow sensor.
The special battery cooling device of electronic public transit system, wherein: the water mixing valve is preferably an electric control proportional water mixing valve.
The special battery cooling device of electronic public transit system, wherein: the PLC control system controls the temperature and the flow of each branch acquired through the temperature and flow sensor, and controls the working temperature and the flow of each branch by controlling the rotating speed of the compressor and the working of the electric control proportional water mixing valve.
Has the advantages that:
the cooling device of the utility model adopts the combination of the vehicle-mounted cooling circulation mechanism and the external cooling unit, the external cooling unit is fixed at the charging station, when the battery of the whole vehicle is cooled, the electric quantity of the power battery is not consumed, and the weight of the whole vehicle is effectively reduced because the refrigerating unit is external, thereby realizing that the energy-saving level of the electric bus is higher than the first floor; in addition, an external cooling unit is adopted, and the utilization efficiency of the battery cooling unit can be improved to the maximum extent. The electric bus is cooled while the vehicles are charged, so that not only can one external cooling unit continuously cool different vehicles, but also batteries of a plurality of vehicles can be cooled simultaneously, the benefits and the efficiency are improved, and the electric bus can work all weather in summer; the invention solves the phenomenon of power battery overheating in the bus summer operation process with the lowest investment, and avoids the problem that the prior vehicle without a battery pack cooling system can not work in all weather in summer operation.
Drawings
Fig. 1 is a schematic diagram of a battery cooling system special for the electric public transportation system.
Detailed Description
As shown in figure 1, the utility model discloses a special battery cooling device of electronic public transit system, including on-vehicle battery package cooling device 1 and external cooling unit 2.
The water inlet end of the vehicle-mounted battery pack cooling device 1 is provided with a normally closed water inlet end quick connector 11, and the water outlet end is provided with a normally closed water outlet end quick connector 12. The external cooling unit is provided with a plurality of groups of normally closed water outlet end quick connectors 253 and water return end normally closed quick connectors 254. The quick connectors 11 and 12 are respectively connected with the quick connectors 253 and 254, the internal water path is communicated after the quick connectors are connected, and the two groups of quick connectors are automatically closed after the quick connectors are separated.
The refrigerant outlet of the plate heat exchanger 21 is connected with the inlet of the compressor 22 through a pipeline, the compressor 22 applies work to the refrigerant, the compressed refrigerant enters the condenser from the inlet end of the condenser 23 for heat dissipation, the low-temperature liquid refrigerant enters the inlet of the liquid storage tank 24 from the outlet end of the condenser 23, the outlet of the liquid storage tank 24 controls the liquid refrigerant to enter the plate heat exchanger 21 through the refrigerant inlet of the plate heat exchanger 21 through the thermostatic expansion valve 241 for gasification and heat absorption; the compressor 22 is driven by a motor 221; the inlet end of the condenser 23 is provided with a pressure switch 231;
the cooling pipeline 25 comprises a main water outlet pipeline 251, a water outlet branch 252, a water return branch 255 and a main water return pipeline 256; one end of the main water outlet pipeline 251 is connected with the water outlet of the plate heat exchanger 21, and the other end is respectively connected with a plurality of water outlet branches 252; the other port of each water outlet branch 252 is provided with a normally closed quick connector 253 which is connected with a quick connector 11 at the water inlet end of the vehicle-mounted battery pack cooling device 1 in a matching way; the water return branch 255 is matched with the water outlet branch 252 and has multiple paths, one end of the water return branch is connected with the main water return pipeline 256, and the other end of the water return branch is provided with a normally closed quick-connection interface 254 which is matched and connected with the quick-connection joint 12 at the water outlet end of the vehicle-mounted battery pack cooling device 1; the water return end of the main water return pipeline 256 is connected with a water return port of the plate heat exchanger 21; the main water return pipeline 256 is provided with a water pump 257 and connected with a liquid storage tank 258, high-temperature water in the vehicle-mounted battery pack cooling device 1 passes through the water outlet quick-connection joint 12, the water return branch 255 and the main water return pipeline 256 return to the water pump 257 and continues to pass through the plate heat exchanger 21 for heat exchange circulation, and thus an external cooling unit cooling loop is formed; the main water outlet pipeline 251, the water outlet branch 252 and the water return branch 255 are all provided with a flow temperature and flow sensor 28;
the water mixing valves 26 are matched with the water outlet branch 252 and the water return branch 255, and the number of the water mixing valves is set according to the maximum number of vehicles which can be cooled simultaneously by the cooling system and is respectively arranged between the corresponding water outlet branch 252 and the corresponding water return branch 255; the water outlet end of the water mixing valve 26 is connected with the water outlet branch 252, and the water return end is connected with the water return branch 255; the mixing valve 26 is preferably an electrically controlled proportional mixing valve; the flow and the refrigerating capacity of each loop are controlled by adjusting the opening of a proportional valve;
the PLC control system 27 is electrically connected with the motor 221, the condenser 23, the pressure switch 231 and each flow temperature and flow sensor 28, so that the control of the external cooling unit 2 is realized, the temperature information of the battery is read through a charging CAN line, and the working temperature range of the battery pack is accurately regulated and controlled through closed-loop control; the PLC control system collects temperature flow information of each branch through a temperature flow sensor, and then adjusts the working temperature and flow of each branch by controlling the rotating speed of the compressor and the opening of the electric control proportional water mixing valve.
The cooling system of the utility model controls the refrigerating output through the plate heat exchanger 21, the compressor 22, the condenser 23, the liquid storage tank 24 and the thermal expansion valve 241 which are connected by pipelines; low-temperature cooling liquid is injected into a battery pack of the whole vehicle for heat exchange and then flows back to an external refrigerating unit 2 through a plate type heat exchanger 21, a cooling pipeline 25, a water mixing valve 26, a vehicle-mounted battery cooling pipeline 1, a PLC control system 27 and the like, namely, the high-temperature cooling liquid is pressurized by a water pump 257 and then flows into the plate type heat exchanger 21 from a water return port of the plate type heat exchanger 21, the heat of a battery is transferred to the plate type heat exchanger 21, low-temperature liquid flows out from a water outlet of the plate type heat exchanger 21 and flows into a battery system of the whole vehicle for heat absorption through a main water outlet pipeline 251, a water outlet branch 252, a water outlet quick connector 253 and a water inlet quick connector 11, and the high-temperature cooling liquid absorbing heat is pressurized by the battery water return quick connector 12; thus, a complete cooling unit refrigeration loop is formed. The battery pack is circulated repeatedly in such a way, so that the purpose of reducing the temperature of the battery pack is achieved.
The utility model discloses a cooling system working process:
after the vehicle returns to the factory, the external cooling unit 2 and the vehicle-mounted battery pack cooling device 1 are communicated by plugging the quick connector 30 while the charging seat is plugged for charging; the external cooling unit 2 of the battery cooling system is started while charging, the external cooling unit is started to operate at 30% of refrigeration power when the external cooling unit is started, and along with the cooling of the battery, the PLC control system 27 automatically adjusts the rotating speed of the compressor 22 according to the read parameters of the battery temperature, the ambient temperature, the water outlet temperature, the water return temperature and the like, so that the refrigerating capacity of the battery cooling system is changed; when the batteries of a plurality of vehicles are cooled simultaneously and the rotation speed adjustment of the compressor 22 cannot meet the temperature control requirement, the proportion of cold water and hot water conveyed to each vehicle is controlled through the electric control proportional water mixing valve 26 of the water outlet loop, so that the intelligent control of each cooling loop is realized.
Because external cooling unit 2 is fixed at the charging station, when giving whole car battery cooling, do not consume power battery's electric quantity to because this refrigerating unit is external, effectual whole car weight of having reduced has realized letting the energy-conserving level of electric public transit be the first floor more.
Claims (5)
1. The utility model provides a special battery cooling device of electronic public transit system which characterized in that: the cooling device comprises a vehicle-mounted battery pack cooling device and an external cooling unit;
the external cooling unit is fixed on a charging station and comprises a plate heat exchanger, a compressor, a condenser, a liquid storage tank, a cooling pipeline, a water mixing valve and a PLC (programmable logic controller) control system which are connected through pipelines;
the refrigerant outlet of the plate heat exchanger is connected with the inlet of the compressor, the outlet of the compressor is connected with the inlet end of the condenser, the outlet end of the condenser is connected with the inlet of the liquid storage tank, and the outlet of the liquid storage tank is connected with the inlet of the plate heat exchanger through a thermal expansion valve;
the cooling pipeline comprises a main water outlet pipeline, a water outlet branch, a water return branch and a main water return pipeline; one end of the main water outlet pipeline is connected with a water outlet of the plate heat exchanger, and the other end of the main water outlet pipeline is respectively connected with a plurality of water outlet branches; the water return branch is matched with the water outlet branch and is provided with a plurality of paths, one end of each path is connected with the main water return pipeline, and the other end of each path is connected with the water outlet end of the vehicle-mounted battery pack cooling device; the water return end of the main water return pipeline is connected with a water return port of the plate heat exchanger;
the water mixing valve is matched with the water outlet branch and the water return branch and is arranged between the corresponding water outlet branch and the water return branch, the water outlet end is connected with the water outlet branch, and the water return end is connected with the water return branch;
the PLC control system controls the compressor and the condenser, reads battery temperature information through a charging CAN line, and accurately regulates and controls the working temperature range of the battery pack through closed-loop control.
2. The cooling device for the battery dedicated for the electric public transportation system according to claim 1, wherein: the water inlet end and the water outlet end of the vehicle-mounted battery pack cooling device are both provided with quick connectors;
and the ports of the water outlet branch and the water return branch are respectively provided with a normally closed quick connection interface which is respectively connected with a quick connection joint of a water inlet end and a water outlet end of the vehicle-mounted battery pack cooling device.
3. The cooling device for the battery dedicated for the electric public transportation system according to claim 1, wherein: the compressor is driven by a motor; a pressure switch is arranged at the inlet end of the condenser, and temperature and flow sensors are arranged at the outlet end of the condenser and the water outlet of the plate heat exchanger;
the main water return pipeline is provided with a water pump and is connected with the liquid storage tank; each water outlet branch and each water return branch are provided with a flow temperature and flow sensor;
and the PLC control system is connected with the motor, the condenser, the water pump, the pressure switch and the flow temperature and flow sensor.
4. The cooling device for the battery dedicated for the electric public transportation system according to claim 1, wherein: the water mixing valve is an electric control proportional water mixing valve.
5. The cooling device for the battery dedicated for the electric public transportation system according to claim 1, wherein: the PLC control system collects the temperature and flow of each branch through a temperature and flow sensor, and controls the working temperature and flow of each branch by controlling the rotating speed of the compressor and the working of the electric control proportional water mixing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700792.0U CN213705237U (en) | 2020-08-15 | 2020-08-15 | Battery cooling device special for electric public transport system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700792.0U CN213705237U (en) | 2020-08-15 | 2020-08-15 | Battery cooling device special for electric public transport system |
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| CN213705237U true CN213705237U (en) | 2021-07-16 |
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| CN202021700792.0U Active CN213705237U (en) | 2020-08-15 | 2020-08-15 | Battery cooling device special for electric public transport system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806302A (en) * | 2020-08-15 | 2020-10-23 | 东风特汽(十堰)客车有限公司 | Battery cooling device special for electric public transport system |
| CN111806302B (en) * | 2020-08-15 | 2024-08-02 | 东风特种汽车有限公司 | Battery cooling device special for electric public transport system |
-
2020
- 2020-08-15 CN CN202021700792.0U patent/CN213705237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806302A (en) * | 2020-08-15 | 2020-10-23 | 东风特汽(十堰)客车有限公司 | Battery cooling device special for electric public transport system |
| CN111806302B (en) * | 2020-08-15 | 2024-08-02 | 东风特种汽车有限公司 | Battery cooling device special for electric public transport system |
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Effective date of registration: 20230407 Address after: 442000 Shiyan city of Hubei province whitecaps Road No. 51 Patentee after: Dongfeng Special Automobile Co.,Ltd. Address before: No. 80, middle Bailang Road, Shiyan City, Hubei Province, 442013 Patentee before: DONGFENG SPECIAL VEHICLE (SHIYAN) BUS Co.,Ltd. |