CN115732800B - Vehicle-mounted energy storage refrigerating and heating system and operation method thereof - Google Patents
Vehicle-mounted energy storage refrigerating and heating system and operation method thereof Download PDFInfo
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- CN115732800B CN115732800B CN202211509883.XA CN202211509883A CN115732800B CN 115732800 B CN115732800 B CN 115732800B CN 202211509883 A CN202211509883 A CN 202211509883A CN 115732800 B CN115732800 B CN 115732800B
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Abstract
The application discloses a vehicle-mounted energy storage refrigerating and heating system and an operation method thereof. According to the application, electric energy is stored in a heat energy form, and the lithium bromide refrigerating system is configured, and the high-temperature energy storage system is responsible for the heat dissipation and heating functions of the battery and the refrigerating and heating functions in the carriage, so that a better working environment can be provided for the battery, and the cruising ability and riding comfort of the electric vehicle are improved under wider environmental conditions.
Description
Technical Field
The application belongs to the field of electric vehicles, relates to an electric vehicle power battery operation technology, and in particular relates to a vehicle-mounted energy storage refrigerating and heating system and an operation method thereof.
Background
The power battery of the electric vehicle is used as a power source of the vehicle, the optimum working temperature is between 15 and 40 ℃, the battery capacity attenuation can be caused by the overhigh or overlow temperature, particularly, the influence of a low-temperature environment on the vehicle and the power battery is very large, the discharge capacity of the battery can be reduced at low temperature, the endurance mileage is influenced, the power performance of the vehicle is also influenced, the energy recovery and the like. In order to radiate and heat the battery and cool and heat the carriage, the electric vehicle uses the electric energy of the power battery to process the cold and heat sources, and as a result, on one hand, the electric energy of the battery is consumed, the cruising ability of the vehicle is reduced, on the other hand, the effect of the electric energy processing heat source is poor, especially in low-temperature weather, the necessary heating effect can not be provided for the battery, the capacity attenuation condition of the battery is serious, the cruising ability attenuation is serious, the refrigerating and heating effects of the battery in the carriage are greatly influenced, and the riding comfort of personnel in the electric vehicle is difficult to be effectively ensured.
Disclosure of Invention
The application aims to: in order to overcome the defects in the prior art, the vehicle-mounted energy storage refrigerating and heating system and the operation method thereof are provided, the vehicle is provided with a high-temperature energy storage system independent of a power battery, electric energy is stored in a heat energy form, the vehicle-mounted energy storage refrigerating and heating system is provided with a lithium bromide refrigerating system, the high-temperature energy storage system is responsible for heat dissipation and heating functions of the battery and refrigerating and heating functions in a carriage, a better working environment can be provided for the battery, and the cruising ability and riding comfort of the electric vehicle are improved under wider environmental conditions.
The technical scheme is as follows: in order to achieve the above purpose, the application provides a vehicle-mounted energy storage refrigeration and heating system, which comprises a high-temperature energy storage device, a lithium bromide refrigeration system, a carriage surface cooler, a battery surface cooler, a carriage tail end and a battery pack tail end, wherein the battery pack tail end is connected with the high-temperature energy storage device for charging the high-temperature energy storage device, the carriage tail end and the battery pack tail end are respectively provided with a first temperature sensor, a second temperature sensor and a third temperature sensor, the high-temperature energy storage device is provided with a water outlet pipe and a water return pipe, the water outlet pipe is respectively connected with a water inlet end of the lithium bromide refrigeration system, a water inlet end of the carriage surface cooler primary side, a water inlet end of the battery surface cooler primary side, a water return pipe is connected with a water return end of the lithium bromide refrigeration system, a water return end of the carriage surface cooler primary side and a water return end of the battery surface cooler primary side, a refrigeration and a battery pack heating channel is arranged between the secondary side of the carriage surface cooler and the carriage tail end, a battery pack heating channel is arranged between the secondary side of the battery surface cooler and the battery pack tail end, and the surface cooler primary side of the carriage surface cooler is respectively connected with a water inlet end of the lithium bromide surface cooler and the water inlet pipe of the primary side of the surface cooler.
Further, a first working condition switching valve is arranged on the water outlet pipe and is used for switching the water inlet communication state of the high-temperature energy storage device, the lithium bromide refrigerating system, the carriage surface cooler and the battery surface cooler.
Further, a second working condition switching valve is arranged on the water return pipe and is used for switching the water return communication state of the high-temperature energy storage device, the lithium bromide refrigerating system, the carriage surface cooler and the battery surface cooler.
Further, a third working condition switching valve is arranged on the water outlet pipe and positioned between the first working condition switching valve, the carriage surface cooler and the battery surface cooler.
Further, a fourth working condition switching valve is arranged between the second working condition switching valve and the carriage surface air cooler and between the carriage surface air cooler and the battery surface air cooler on the water return pipe.
Further, the lithium bromide refrigeration system comprises a generator, a condenser, an evaporator, an absorber and an air cooling channel, wherein an inlet end and an outlet end of a primary side of the generator are respectively connected with a water outlet pipe and a water return pipe, an outlet end of a secondary side of the generator is connected with the condenser, the air cooling channel is matched with the condenser, the condenser is connected with the evaporator, the evaporator is connected with the absorber, and the absorber is connected with the generator.
Further, the cold supply pipe and the cold return pipe are arranged on the evaporator.
Further, a fifth working condition switching valve and a sixth working condition switching valve are respectively arranged on the cold supply pipe and the cold return pipe.
Further, an energy release pump is arranged on the water outlet pipe, a lithium bromide refrigeration pump is arranged on the cooling return pipe, a carriage circulating power pump is arranged on the carriage refrigerating and heating channel, and a battery pack circulating power pump is arranged on the battery pack refrigerating and heating channel.
The application also provides an operation method of the vehicle-mounted energy storage refrigerating and heating system, which comprises a charging working condition mode, a heating working condition mode and a refrigerating working condition mode;
the operation process of the charging working condition mode is as follows:
setting a charging limit value of a first temperature sensor, starting charging when the measured value of the first temperature sensor is lower than the set charging limit value, and transmitting electric energy to a high-temperature energy storage device through the tail end of a battery pack to realize the charging of the high-temperature energy storage device;
setting a charging lower limit value of a third temperature sensor, when the measured value of the third temperature sensor is lower than the charging lower limit value in the process of charging the high-temperature energy storage device, controlling a first working condition switching valve and a second working condition switching valve to open a heating side by a system, and opening the third working condition switching valve and a fourth working condition switching valve to enable a water outlet pipe and a water return pipe to be communicated with a carriage surface cooler and a battery surface cooler, wherein the high-temperature energy storage device transmits heat to a primary side of the carriage surface cooler and the battery surface cooler by taking water as a medium through an energy release pump, and transmits heat of a secondary side of the battery surface cooler to the tail end of a battery through a battery refrigerating and heating channel by a battery circulating power pump to heat the battery, and controlling the temperature of the battery in a specified temperature range by adjusting the energy release pump and the battery circulating power pump in the process;
the operation process of the heating working condition mode is as follows:
according to the set charging lower limit value of the third temperature sensor, when the actual measurement value of the third temperature sensor is lower than the charging lower limit value, the system controls the first working condition switching valve and the second working condition switching valve to open the heating side, and opens the third working condition switching valve and the fourth working condition switching valve, so that the water outlet pipe and the water return pipe are communicated with the carriage surface air cooler and the battery surface air cooler, the high-temperature energy storage device transmits heat to the primary sides of the carriage surface air cooler and the battery surface air cooler by taking water as a medium through the energy release pump, the heat of the secondary side of the battery surface air cooler is transmitted to the tail end of the battery through the battery refrigerating and heating channel by using the battery circulating power pump to heat the battery, and the temperature of the battery is controlled in a specified temperature range by adjusting the energy release pump and the battery circulating power pump in the process;
setting a compartment target temperature on the basis of controlling the temperature of the battery pack, when the measured value of the second temperature sensor is smaller than the compartment target temperature, conveying heat of the secondary side of the compartment surface cooler to the tail end of the compartment through a compartment refrigerating and heating channel by using a compartment circulating power pump to heat the compartment, and controlling the compartment temperature in a specified temperature range by adjusting an energy release pump and the compartment circulating power pump in the process;
the operation process of the refrigeration working condition mode is as follows:
setting an operation upper limit value of a third temperature sensor, when the actual measurement value of the third temperature sensor is higher than the operation upper limit value, controlling a first working condition switching valve and a second working condition switching valve to open a refrigerating side by the system, enabling a high-temperature energy storage device to be communicated with a lithium bromide refrigerating system, closing the third working condition switching valve and a fourth working condition switching valve, opening a fifth working condition switching valve and a sixth working condition switching valve, enabling the high-temperature energy storage device to convey heat to a generator of the lithium bromide refrigerating system by using water as a medium through an energy release pump, enabling medium water to return to the generator to form circulation after sequentially passing through a condenser, an evaporator and an absorber, operating a refrigerant circulation inside the lithium bromide refrigerating system, cooling the condenser by using an air cooling channel, providing cold energy for the evaporator, conveying the cold energy to a primary side of a carriage surface cooler and a battery surface cooler by using the lithium bromide refrigerating pump, conveying the cold energy of a secondary side of the battery surface cooler to the tail end of the battery by using a battery pack refrigerating and heating channel, cooling the battery pack, and controlling the temperature range of the battery pack by adjusting the energy release pump in the cooling process;
the vehicle passenger starts a refrigeration mode, the target temperature of the carriage is set on the basis that the temperature of the battery pack is controlled, when the measured value of the second temperature sensor is larger than the target temperature of the carriage, the cold quantity of the secondary side of the carriage surface cooler is conveyed to the tail end of the carriage through a carriage refrigerating and heating channel by using the carriage circulating power pump, the carriage is cooled, and the temperature of the carriage is controlled in a specified temperature range by adjusting the energy release pump and the carriage circulating power pump in the process.
The beneficial effects are that: compared with the prior art, the vehicle is provided with the high-temperature energy storage system independent of the power battery, electric energy is stored in a heat energy form, and the lithium bromide refrigerating system is configured, the high-temperature energy storage system is responsible for heat dissipation and heating functions of the battery and refrigerating and heating functions in a carriage, so that the running temperature of the power battery is ensured to be in a set temperature range on the basis of no extra loss of the energy of the power battery, the problems that the running temperature of the power battery of the conventional electric vehicle is too low or too high in low temperature weather, the battery capacity attenuation condition is serious and the endurance capacity attenuation is serious are solved, the running temperature of the power battery can be effectively controlled, the battery capacity attenuation condition is improved, the endurance capacity of the power vehicle is improved, the energy supply effect of the power battery is ensured, the continuous effects of the power battery on refrigerating and heating in the carriage are ensured, a better working environment is provided for the battery, and the endurance capacity and riding comfort of the electric vehicle are improved under wider environmental conditions.
Drawings
FIG. 1 is a schematic diagram of the structural connections of the system of the present application;
FIG. 2 is a schematic diagram illustrating operation of the system of the present application in a charging mode;
FIG. 3 is a schematic diagram illustrating operation of the system of the present application in a heating mode of operation;
FIG. 4 is a schematic diagram of the operation of the system of the present application in a cooling mode.
Detailed Description
The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various modifications of the application, which are equivalent to those skilled in the art upon reading the application, will fall within the scope of the application as defined in the appended claims.
Example 1:
as shown in fig. 1, the application provides a vehicle-mounted energy storage refrigerating and heating system, which comprises a high-temperature energy storage device 1, a lithium bromide refrigerating system 2, a carriage surface cooler 3, a battery surface cooler 4, a carriage tail end 31 and a battery tail end 41, wherein the battery tail end 41 is connected with the high-temperature energy storage device 1 and used for charging and storing energy for the high-temperature energy storage device 1, the carriage tail end 31 and the battery tail end 41 are respectively provided with a first temperature sensor T1, a second temperature sensor T2 and a third temperature sensor T3, the high-temperature energy storage device 1 is provided with a water outlet pipe 11 and a water return pipe 12, the water outlet pipe 11 is provided with a first working condition switching valve V11, the first working condition switching valve V11 is used for switching the water inlet communication state of the high-temperature energy storage device 1 and the lithium bromide refrigeration system 2 and the carriage surface air cooler 3 and the battery surface air cooler 4, the water return pipe 12 is provided with a second working condition switching valve V12, the second working condition switching valve V12 is used for switching the water return communication state of the high-temperature energy storage device 1 and the lithium bromide refrigeration system 2 and the carriage surface air cooler 3 and the battery surface air cooler 4, the water outlet pipe 11 is provided with a third working condition switching valve V23 between the first working condition switching valve V11 and the carriage surface air cooler 3 and the battery surface air cooler 4, and the water return pipe 12 is provided with a fourth working condition switching valve V24 between the second working condition switching valve V12 and the carriage surface air cooler 3 and the battery surface air cooler 4;
the lithium bromide refrigeration system 2 comprises a generator 21, a condenser 22, an evaporator 23, an absorber 24 and an air cooling channel 25, wherein an inlet end and an outlet end of a primary side of the generator 21 are respectively connected with a water outlet pipe 11 and a water return pipe 12, an outlet end of a secondary side of the generator 21 is connected with the condenser 22, the air cooling channel 25 is matched with the condenser 22, the condenser 22 is connected with the evaporator 23, the evaporator 23 is connected with the absorber 24, the absorber 24 is connected with the generator 21, the whole lithium bromide refrigeration system 2 forms a refrigerant cycle, the evaporator 23 is provided with a cold supply pipe 13 and a cold return pipe 14, and the cold supply pipe 13 and the cold return pipe 14 are respectively provided with a fifth working condition switching valve V21 and a sixth working condition switching valve V22.
In the embodiment, the cold supply pipe 13 and the water outlet pipe 11 are combined together to form a communicating pipe, and the communicating pipe is respectively connected with the water inlet end of the primary side of the carriage surface cooler 3 and the water inlet end of the primary side of the battery surface cooler 4; the return pipe 12 and the return pipe 14 are combined together to form a communication pipe, the communication pipe is respectively connected with a return water end of the primary side of the carriage surface cooler 3 and a return water end of the primary side of the battery surface cooler 4, a carriage refrigerating and heating channel 32 is arranged between the secondary side of the carriage surface cooler 3 and the carriage tail end 31, and a battery pack refrigerating and heating channel 42 is arranged between the secondary side of the battery surface cooler 4 and the battery pack tail end 41.
The water outlet pipe 11 is provided with an energy release pump P1, the cooling return pipe 14 is provided with a lithium bromide refrigeration pump P2, the carriage refrigerating and heating channel 32 is provided with a carriage circulating power pump P3, and the battery pack refrigerating and heating channel 42 is provided with a battery pack circulating power pump P4.
Example 2:
in this embodiment, the vehicle-mounted energy storage refrigeration and heating system provided in embodiment 1 is applied to an electric automobile, and an operation method of the vehicle-mounted energy storage refrigeration and heating system is provided, which includes a charging working condition mode, a heating working condition mode and a refrigeration working condition mode;
as shown in fig. 2, in this embodiment, the charging mode is operated, and the specific operation process is as follows:
setting a charging limit value of the first temperature sensor T1, starting charging when the measured value of the first temperature sensor T1 is lower than the set charging limit value, and transmitting electric energy to the high-temperature energy storage device 1 through the battery pack tail end 41 to realize charging and energy storage of the high-temperature energy storage device 1;
setting a charging lower limit value of the third temperature sensor T3, when the measured value of the third temperature sensor T3 is lower than the charging lower limit value in the process of charging the high-temperature energy storage device 1, controlling the first working condition switching valve V11 and the second working condition switching valve V12 to open a heating side, opening the third working condition switching valve V23 and the fourth working condition switching valve V24, closing the fifth working condition switching valve V21 and the sixth working condition switching valve V22, enabling the water outlet pipe 11 and the water return pipe 12 to be communicated with the carriage surface cooler 3 and the battery surface cooler 4, enabling the high-temperature energy storage device 1 to convey heat to the primary side of the carriage surface cooler 3 and the battery surface cooler 4 through the energy release pump P1, utilizing the battery pack circulating power pump P4 to convey heat of the secondary side of the battery surface cooler 4 to the battery pack tail end 41 through the battery pack refrigerating and heating channel 42, heating the battery pack, and controlling the temperature of the battery pack in a specified temperature range through adjusting the energy release pump P1 and the battery pack circulating power pump P4 in the process.
In the charging process of the high-temperature energy storage device 1 for the battery pack, the power battery pack can be ensured to be in a specified temperature range, the condition that the charging operation temperature of the power battery pack is too low or too high due to weather influence can be avoided, the energy supply efficiency of the power battery pack is ensured, the charging effect of the high-temperature energy storage device 1 is ensured, the energy supply loss is reduced, and the cruising ability of an electric automobile is improved.
Example 3:
in this embodiment, the vehicle-mounted energy storage refrigeration and heating system provided in embodiment 1 is applied to an electric automobile, and an operation method of the vehicle-mounted energy storage refrigeration and heating system is provided, which includes a charging working condition mode, a heating working condition mode and a refrigeration working condition mode;
as shown in fig. 3, in this embodiment, the heating mode is operated, and the specific operation process is as follows:
according to the set charging lower limit value of the third temperature sensor T3, when the measured value of the third temperature sensor T3 is lower than the charging lower limit value, the system controls the first working condition switching valve V11 and the second working condition switching valve V12 to open the heating side, opens the third working condition switching valve V23 and the fourth working condition switching valve V24, closes the fifth working condition switching valve V21 and the sixth working condition switching valve V22, so that the water outlet pipe 11 and the water return pipe 12 are communicated with the carriage surface air cooler 3 and the battery surface air cooler 4, the high-temperature energy storage device 1 transmits heat to the primary side of the carriage surface air cooler 3 and the battery surface air cooler 4 by using the energy release pump P1, the heat on the secondary side of the battery surface air cooler 4 is transmitted to the tail end 41 of the battery by using the battery pack circulating power pump P4, the battery pack is heated, and the battery pack temperature is controlled in a specified temperature range by adjusting the energy release pump P1 and the battery pack circulating power pump P4;
on the basis of the battery pack temperature control, the target temperature of the carriage is set, when the measured value of the second temperature sensor T2 is smaller than the target temperature of the carriage, the heat of the secondary side of the carriage surface cooler 3 is conveyed to the tail end of the carriage through the carriage refrigerating and heating channel 32 by using the carriage circulating power pump P3 to heat the carriage, and the temperature of the carriage is controlled in a specified temperature range by adjusting the energy release pump P1 and the carriage circulating power pump P3 in the process.
In the operation process of the heating working condition mode, the temperature of the battery pack is always controlled in a specified temperature range, the condition that the operation temperature of the power battery pack is too low or too high due to weather influence is avoided, the energy supply efficiency of the power battery pack is ensured, the heating effect of a carriage is ensured, the riding comfort of personnel in the vehicle is improved, the energy supply loss is reduced, and the endurance of the electric automobile is improved.
Example 4:
in this embodiment, the vehicle-mounted energy storage refrigeration and heating system provided in embodiment 1 is applied to an electric automobile, and an operation method of the vehicle-mounted energy storage refrigeration and heating system is provided, which includes a charging working condition mode, a heating working condition mode and a refrigeration working condition mode;
as shown in fig. 4, in this embodiment, the refrigeration mode is operated, and the specific operation process is as follows:
setting an operation upper limit value of a third temperature sensor T3, when the actual measurement value of the third temperature sensor T3 is higher than the operation upper limit value, the system controls a first working condition switching valve V11 and a second working condition switching valve V12 to open a refrigerating side, so that the high-temperature energy storage device 1 is communicated with a lithium bromide refrigerating system 2, and closes a third working condition switching valve V23 and a fourth working condition switching valve V24, a fifth working condition switching valve V21 and a sixth working condition switching valve V22 are opened, the high-temperature energy storage device 1 transmits heat to a generator 21 of the lithium bromide refrigerating system 2 by taking water as a medium through an energy release pump P1, and the medium water returns to the generator 21 to circulate through a condenser 22, an evaporator 23 and an absorber 24 in sequence, the refrigerant circulates through the interior of the lithium bromide refrigerating system 2, the condenser 22 is cooled through an air cooling channel 25, the condenser 22 supplies cold energy to the evaporator 23, the evaporator 23 transmits the cold energy to a primary side of a battery pack 4 through a cooling tube 13 by taking the water as a medium, the battery pack 4 is discharged to a battery pack through a power pump P4 at the tail end of a battery pack, and the temperature of the battery pack is controlled by a battery pack power pack through a specified temperature pump P4, and the temperature pack is controlled in a temperature-reducing range of the battery pack power pack P4;
the vehicle passenger starts a refrigeration mode, the target temperature of the carriage is set on the basis of the temperature control of the battery pack, when the measured value of the second temperature sensor T2 is larger than the target temperature of the carriage, the cold quantity of the secondary side of the carriage surface cooler 3 is conveyed to the tail end of the carriage through the carriage refrigerating and heating channel 32 by using the carriage circulating power pump P3, the carriage is cooled, and the temperature of the carriage is controlled in a specified temperature range by adjusting the energy release pump P1 and the carriage circulating power pump P3 in the process.
In the operation process of the refrigeration working condition mode, the temperature of the battery pack is always controlled in a specified temperature range, the condition that the operation temperature of the power battery pack is too low or too high due to weather influence is avoided, the energy supply efficiency of the power battery pack is ensured, the refrigeration effect of a carriage is ensured, the riding comfort of personnel in the vehicle is improved, the energy supply loss is reduced, and the cruising ability of the electric vehicle is improved.
Claims (10)
1. The utility model provides a vehicle-mounted energy storage refrigeration heating system, its characterized in that includes high temperature energy storage device, lithium bromide refrigerating system, carriage surface cooler, battery surface cooler, carriage end, group battery end is being connected high temperature energy storage device and is being used for charging for high temperature energy storage device, carriage end and group battery end are provided with first temperature sensor, second temperature sensor and third temperature sensor respectively, be provided with outlet pipe and wet return on the high temperature energy storage device, the outlet pipe is being connected respectively the water inlet end of lithium bromide refrigerating system, the water inlet end of carriage surface cooler primary side, the water inlet end of battery surface cooler primary side, the wet return is being connected the water return end of lithium bromide refrigerating system, the water return end of carriage surface cooler primary side, the water return end of battery surface cooler primary side, be provided with the refrigeration heating passageway of carriage between secondary side and the group battery end, be provided with group battery refrigeration heating passageway on the lithium bromide system and wet return is being provided with power supply pipe and wet return, the water inlet pipe is being connected with the water inlet pipe and the water inlet pipe of battery surface cooler primary side of the carriage surface cooler respectively.
2. The vehicle-mounted energy storage refrigerating and heating system according to claim 1, wherein the water outlet pipe is provided with a first working condition switching valve, and the first working condition switching valve is used for switching the water inlet communication state of the high-temperature energy storage device and the lithium bromide refrigerating system as well as the carriage surface cooler and the battery surface cooler.
3. The vehicle-mounted energy storage refrigerating and heating system according to claim 1, wherein a second working condition switching valve is arranged on the water return pipe and is used for switching the water return communication state of the high-temperature energy storage device and the lithium bromide refrigerating system as well as the carriage surface cooler and the battery surface cooler.
4. The vehicle-mounted energy storage refrigerating and heating system according to claim 2, wherein a third working condition switching valve is arranged on the water outlet pipe and between the first working condition switching valve and the carriage surface cooler and the battery surface cooler.
5. A vehicle-mounted energy storage refrigerating and heating system according to claim 3, wherein a fourth working condition switching valve is arranged on the water return pipe and between the second working condition switching valve and the carriage surface cooler and the battery surface cooler.
6. The vehicle-mounted energy-storage refrigerating and heating system according to claim 1, wherein the lithium bromide refrigerating system comprises a generator, a condenser, an evaporator, an absorber and an air cooling channel, wherein an inlet end and an outlet end of a primary side of the generator are respectively connected with a water outlet pipe and a water return pipe, an outlet end of a secondary side of the generator is connected with the condenser, the air cooling channel is cooperatively arranged on the condenser, the condenser is connected with the evaporator, the evaporator is connected with the absorber, and the absorber is connected with the generator.
7. The vehicle-mounted energy storage, refrigeration and heating system as recited in claim 6, wherein the cold supply pipe and the cold return pipe are disposed on the evaporator.
8. The vehicle-mounted energy storage refrigerating and heating system according to claim 7, wherein a fifth working condition switching valve and a sixth working condition switching valve are respectively arranged on the cold supply pipe and the cold return pipe.
9. The vehicle-mounted energy storage refrigerating and heating system according to claim 7, wherein the water outlet pipe is provided with an energy release pump, the cooling return pipe is provided with a lithium bromide refrigerating pump, the carriage refrigerating and heating channel is provided with a carriage circulating power pump, and the battery pack refrigerating and heating channel is provided with a battery pack circulating power pump.
10. The operation method of the vehicle-mounted energy storage refrigeration and heating system is characterized in that the vehicle-mounted energy storage refrigeration and heating system comprises a high-temperature energy storage device, a lithium bromide refrigeration system, a carriage surface cooler, a battery surface cooler, a carriage tail end and a battery pack tail end, wherein the battery pack tail end is connected with the high-temperature energy storage device and is used for charging the high-temperature energy storage device;
the operation method of the vehicle-mounted energy storage refrigerating and heating system comprises a charging working condition mode, a heating working condition mode and a refrigerating working condition mode;
the operation process of the charging working condition mode is as follows:
setting a charging limit value of a first temperature sensor, starting charging when the measured value of the first temperature sensor is lower than the set charging limit value, and transmitting electric energy to a high-temperature energy storage device through the tail end of a battery pack to realize the charging of the high-temperature energy storage device;
setting a charging lower limit value of a third temperature sensor, when the measured value of the third temperature sensor is lower than the charging lower limit value in the process of charging the high-temperature energy storage device, controlling a first working condition switching valve and a second working condition switching valve to open a heating side by a system, and opening the third working condition switching valve and a fourth working condition switching valve to enable a water outlet pipe and a water return pipe to be communicated with a carriage surface cooler and a battery surface cooler, wherein the high-temperature energy storage device transmits heat to a primary side of the carriage surface cooler and the battery surface cooler by taking water as a medium through an energy release pump, and transmits heat of a secondary side of the battery surface cooler to the tail end of a battery through a battery refrigerating and heating channel by a battery circulating power pump to heat the battery, and controlling the temperature of the battery in a specified temperature range by adjusting the energy release pump and the battery circulating power pump in the process;
the operation process of the heating working condition mode is as follows:
according to the set charging lower limit value of the third temperature sensor, when the actual measurement value of the third temperature sensor is lower than the charging lower limit value, the system controls the first working condition switching valve and the second working condition switching valve to open the heating side, and opens the third working condition switching valve and the fourth working condition switching valve, so that the water outlet pipe and the water return pipe are communicated with the carriage surface air cooler and the battery surface air cooler, the high-temperature energy storage device transmits heat to the primary sides of the carriage surface air cooler and the battery surface air cooler by taking water as a medium through the energy release pump, the heat of the secondary side of the battery surface air cooler is transmitted to the tail end of the battery through the battery refrigerating and heating channel by using the battery circulating power pump to heat the battery, and the temperature of the battery is controlled in a specified temperature range by adjusting the energy release pump and the battery circulating power pump in the process;
setting a compartment target temperature on the basis of controlling the temperature of the battery pack, when the measured value of the second temperature sensor is smaller than the compartment target temperature, conveying heat of the secondary side of the compartment surface cooler to the tail end of the compartment through a compartment refrigerating and heating channel by using a compartment circulating power pump to heat the compartment, and controlling the compartment temperature in a specified temperature range by adjusting an energy release pump and the compartment circulating power pump in the process;
the operation process of the refrigeration working condition mode is as follows:
setting an operation upper limit value of a third temperature sensor, when the actual measurement value of the third temperature sensor is higher than the operation upper limit value, controlling a first working condition switching valve and a second working condition switching valve to open a refrigerating side by the system, enabling a high-temperature energy storage device to be communicated with a lithium bromide refrigerating system, closing the third working condition switching valve and a fourth working condition switching valve, opening a fifth working condition switching valve and a sixth working condition switching valve, enabling the high-temperature energy storage device to convey heat to a generator of the lithium bromide refrigerating system by using water as a medium through an energy release pump, enabling medium water to return to the generator to form circulation after sequentially passing through a condenser, an evaporator and an absorber, operating a refrigerant circulation inside the lithium bromide refrigerating system, cooling the condenser by using an air cooling channel, providing cold energy for the evaporator, conveying the cold energy to a primary side of a carriage surface cooler and a battery surface cooler by using the lithium bromide refrigerating pump, conveying the cold energy of a secondary side of the battery surface cooler to the tail end of the battery by using a battery pack refrigerating and heating channel, cooling the battery pack, and controlling the temperature range of the battery pack by adjusting the energy release pump in the cooling process;
the vehicle passenger starts a refrigeration mode, the target temperature of the carriage is set on the basis that the temperature of the battery pack is controlled, when the measured value of the second temperature sensor is larger than the target temperature of the carriage, the cold quantity of the secondary side of the carriage surface cooler is conveyed to the tail end of the carriage through a carriage refrigerating and heating channel by using the carriage circulating power pump, the carriage is cooled, and the temperature of the carriage is controlled in a specified temperature range by adjusting the energy release pump and the carriage circulating power pump in the process.
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