CN218827405U - A thermal management unit of an energy storage power station - Google Patents

Abstract

The utility model relates to a thermal management unit of an energy storage power station, comprising a frame and at least two groups of thermal management units; the thermal management unit: a compressor, a liquid-cooled condenser, a throttling device, a battery heat exchanger and a compressor are sequentially connected To form a refrigerant circulation loop, the four ports of the first four-way valve are respectively connected with the coolant inlet branch pipe, the coolant inlet of the liquid-cooled condenser, the coolant inlet of the battery heat exchanger, and the coolant outlet of the radiator. The four ports of the four-way valve are respectively connected to the coolant outlet of the liquid-cooled condenser, the inlet of the first water pump, the inlet of the second water pump, and the coolant outlet of the battery heat exchanger, and the outlet of the first water pump is connected to the coolant of the radiator. The outlet of the second water pump is connected to the coolant outlet branch pipe; the thermal management unit is detachably installed on the frame, and the coolant inlet branch pipe is connected to the coolant outlet of the energy storage power station through the coolant inlet main pipe. The outlet branch pipe is connected with the coolant inlet of the energy storage power station through the coolant outlet main pipe.

Description

A thermal management unit of an energy storage power station

technical field

The utility model belongs to the thermal management system technical field of an energy storage power station, in particular to a thermal management unit of an energy storage power station.

Background technique

Energy storage power station is an equipment system that stores, converts and releases recyclable electrical energy through electrochemical cells or electromagnetic energy storage media. The electrochemical energy storage power station realizes energy conversion by charging and discharging the positive and negative electrodes of the battery through chemical reactions. At present, my country's energy storage industry is booming, but batteries have high requirements on the working environment, so the battery thermal management optimization problem of energy storage power stations needs to be solved urgently; at present, the battery thermal management of energy storage power stations is mainly customized according to the cooling requirements of energy storage power stations. The cooling cabinet has the following defects: 1. The existing cooling cabinet is large in size and high in cost; 2. The existing cooling cabinet is produced by assembling components at the energy storage power station site, and the product consistency is poor and the product is stable 3. After the cooling cabinet has quality problems, the energy storage power station cannot be used, and the energy storage power station needs to be repaired after the cooling cabinet is repaired, and the maintenance of the cooling cabinet is troublesome.

Utility model content

In order to solve the problems of large volume and troublesome on-site assembly and maintenance of the battery thermal management system of the energy storage power station in the prior art, the utility model provides a thermal management unit of the energy storage power station.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows. A heat management unit of an energy storage power station includes a frame, a coolant inlet main pipe, a coolant outlet water main pipe and at least two sets of heat management units. The thermal management unit includes a casing, and a compressor, a liquid-cooled condenser, a throttling device, a battery heat exchanger, a cooling fan, a radiator, a first four-way valve, a second four-way valve, and a second four-way valve arranged on the casing. A water pump, a second water pump, a coolant inlet branch pipe and a coolant outlet branch pipe, the cooling fan is used to dissipate heat for the radiator; the compressor, liquid-cooled condenser, throttling device, battery heat exchanger and compressor The four ports of the first four-way valve are respectively connected with the coolant inlet branch pipe, the coolant inlet of the liquid-cooled condenser, the coolant inlet of the battery heat exchanger, and the coolant outlet of the radiator. connection; the four ports of the second four-way valve are respectively connected with the coolant outlet of the liquid-cooled condenser, the inlet of the first water pump, the inlet of the second water pump and the coolant outlet of the battery heat exchanger; the first The outlet of the water pump is connected to the coolant inlet of the radiator, and the outlet of the second water pump is connected to the coolant outlet branch pipe;

At least two groups of thermal management units can be detachably arranged on the frame, the coolant inlet branch pipe is connected to the coolant inlet main pipe, and the coolant outlet branch pipe is connected to the coolant outlet main pipe; the coolant The main water inlet pipe is connected to the cooling liquid outlet of the energy storage power station, and the cooling liquid outlet main pipe is connected to the cooling liquid inlet of the energy storage power station.

Preferably, a rehydration kettle is provided on the frame, and the rehydration kettle is connected to the coolant inlet main pipe, and the refill kettle is used to supplement the cooling liquid for the thermal management unit. Effectively extend the service life of the coolant, ensure the effectiveness of the use of the coolant, reduce the operation of replenishing the coolant to the thermal management unit, and reduce maintenance costs.

Preferably, the frame is sequentially provided with a plurality of support plates from bottom to top, an installation space is formed between adjacent support plates, and at least two groups of the thermal management units are detachably arranged on corresponding mounting plates from bottom to top. In the space, the rehydration water bottle is arranged on the top of the rack. The space layout of the thermal management unit is reasonable and reliable, the occupied area can be reduced, and the thermal management unit is convenient for loading and unloading.

Preferably, the number of the thermal management units is 4 groups. Combine small platform thermal management units according to customer cooling requirements to meet customer needs. The number of 4 groups of thermal management units is set reasonably, which is convenient for loading and unloading of thermal management units. When maintaining a group of thermal management units, the remaining three The thermal management unit of the group runs at full load to ensure the normal operation of the thermal management unit without stopping.

Further, the housing includes a bottom plate and a mesh plate located around the bottom plate, the surrounding mesh plates form an accommodation space, the cooling fan is located outside the accommodation space, the compressor, liquid-cooled condenser, throttling The device, the battery heat exchanger, the radiator, the first four-way valve, the second four-way valve, the first water pump and the second water pump are all located inside the accommodation space, and the coolant inlet branch pipe and the coolant outlet branch pipe are connected from the accommodation space. The interior of the space extends to the exterior. It facilitates the integration of the thermal management unit and the heat exchange between the thermal management unit and the outside.

Further, the thermal management unit also includes a refrigerant flow channel plate and a coolant flow channel plate, the refrigerant flow channel plate is used to connect the refrigerant outlet of the liquid-cooled condenser with the inlet of the throttling device, and the throttling device The outlet is connected to the refrigerant inlet of the battery heat exchanger, and the liquid-cooled condenser, throttling device and battery heat exchanger are integrated on the refrigerant flow channel plate; the coolant flow channel plate is used to connect the first four-way valve The corresponding two ports are respectively connected to the cooling liquid inlet of the liquid-cooled condenser and the cooling liquid inlet of the battery heat exchanger, and the four ports of the second four-way valve are respectively connected to the cooling liquid outlet of the liquid-cooled condenser and the second four-way valve. The inlet of the first water pump, the inlet of the second water pump are connected to the coolant outlet of the battery heat exchanger, and the first water pump, the second water pump, the first four-way valve and the second four-way valve are integrally assembled on the coolant flow channel plate superior. Both the refrigerant side and the coolant side adopt an integrated structure. The integrated structure has a reasonable and compact layout, eliminating the need for pipelines connected between integrated parts, saving space, facilitating production and assembly, and reducing costs.

Further, the air outlet of the compressor is connected to the refrigerant inlet of the liquid-cooled condenser through a refrigerant pipe, and the refrigerant outlet of the battery heat exchanger is connected to the air inlet of the compressor through a refrigerant pipe; the cooling of the radiator The liquid inlet is connected to the outlet of the first water pump through the water pipe and/or through the cooling liquid flow channel plate, and the cooling liquid outlet of the radiator is connected to the first four pumps through the water pipe and/or through the cooling liquid flow channel plate. Inlet connection to the through valve. The connection mode of the compressor and the radiator to the heat management unit is simple and reliable, which facilitates the assembly of the heat management unit and has low cost.

Preferably, the liquid-cooled condenser is a water-cooled condenser; the radiator is a fin radiator; the cooling fan is an electronic fan; the first four-way valve and the second four-way valve are electronic four-way valve, and the compressor is an electric compressor. The water-cooled condenser is selected to ensure the heat exchange effect of the coolant and the refrigerant; the finned radiator is selected to ensure the heat exchange effect between the heat management unit and the external heat; the electronic fan, electronic four-way valve and electric compressor are selected to facilitate the cooling of the heat management unit Control and regulation of heating mode, heating mode and natural air cooling mode.

Beneficial effect:

1. The thermal management unit of the energy storage power station of the present utility model can first complete the assembly and performance testing of each group of thermal management units on the assembly line of the production workshop to ensure the accuracy, consistency and stability of the assembly, and ensure the thermal management units. The overall quality, and then complete the assembly of the rack at the site of the energy storage power station, and install each group of thermal management units on the rack. The on-site assembly is simple and convenient, which greatly reduces the difficulty of assembly, reduces assembly man-hours, and reduces production costs;

2. For the thermal management unit of the energy storage power station of the present invention, if there is a problem with the thermal management unit, the corresponding thermal management unit can be stopped, and the rest of the normal thermal management units can work at full load to ensure the normal operation of the energy storage power station without stopping , and the problematic thermal management unit can be repaired by removing the parts, or the entire thermal management unit can be directly replaced, which is convenient and trouble-free;

3. The thermal management unit of the energy storage power station of the utility model, the integrated platform thermal management unit, can drastically shorten the development cycle of subsequent new projects and reduce the development cost of the assembly product;

4. In the heat management unit of the energy storage power station of the present utility model, the coolant in the radiator absorbs heat from the external environment, and the coolant then exchanges heat with the refrigerant through the liquid-cooled condenser, which greatly reduces the amount of refrigerant used. Reduce costs and reduce refrigerant filling time; the heating mode uses the coolant to absorb heat from the outside through the radiator, which greatly reduces the occurrence of frosting and ensures the normal operation of the battery under low ambient temperature and high humidity conditions. Use to improve the service life of the battery; when the external environment temperature is not high but the energy storage power station has a cooling demand, the thermal management unit can enter the natural wind cooling mode, the refrigerant side does not work, and the cooling liquid of the air-cooled radiator is supplied to the storage It can greatly reduce the working time of the compressor in spring and autumn, increase the life of the compressor, save energy loss, and reduce the cost of product use; by controlling the first four-way valve and the second four-way valve, the heat management unit can be realized The switch between cooling mode, heating mode and natural air cooling mode is convenient and intelligent.

5. The thermal management unit of the energy storage power station of the present utility model has a high degree of integration, and the heat exchange efficiency of the thermal management unit is high, which greatly reduces the volume and occupied area of the thermal management unit.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

Fig. 1 is a schematic diagram of the three-dimensional structure of the thermal management unit of the energy storage power station of the present invention;

Fig. 2 is another perspective schematic diagram of the thermal management unit of the energy storage power station of the present invention;

Fig. 3 is a schematic diagram of the three-dimensional structure of the thermal management unit of the present invention;

Fig. 4 is a schematic diagram of the principle of the refrigeration mode of the thermal management unit of the present invention;

Fig. 5 is a schematic diagram of the principle of the heating mode of the thermal management unit of the present invention;

Fig. 6 is a schematic diagram of the principle of the natural wind cooling mode of the thermal management unit of the present invention;

In the figure: 1. Frame, 1-1. Support plate, 2. Coolant water inlet main pipe, 3. Coolant water outlet main pipe, 4. Thermal management unit, 4-1, shell, 4-1-1, bottom plate , 4-1-2, mesh plate, 4-2, compressor, 4-3, liquid-cooled condenser, 4-4, throttling device, 4-5, battery heat exchanger, 4-6, cooling fan, 4-7, radiator, 4-8, first four-way valve, 4-9, second four-way valve, 4-10, first water pump, 4-11, second water pump, 4-12, coolant inlet Water branch pipe, 4-13, coolant outlet branch pipe, 4-14, refrigerant pipe, 4-15, water pipe, 4-16, refrigerant flow channel plate, 4-17, coolant flow channel plate, 5, rehydration kettle.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 6, a heat management unit of an energy storage power station includes a frame 1, a coolant inlet main pipe 2, a coolant outlet water main pipe 3, and at least two sets of thermal management units 4, the heat management units 4 Including shell 4-1, and compressor 4-2, liquid-cooled condenser 4-3, throttling device 4-4, battery heat exchanger 4-5, cooling fan 4- 6. Radiator 4-7, first four-way valve 4-8, second four-way valve 4-9, first water pump 4-10, second water pump 4-11, coolant inlet branch pipe 4-12 and cooling The liquid outlet branch pipe 4-13, the heat dissipation fan 4-6 is used to dissipate heat to the radiator 4-7; the compressor 4-2, the liquid-cooled condenser 4-3, the throttling device 4-4, and the battery heat exchange The device 4-5 and the compressor 4-2 are sequentially connected to form a refrigerant circulation loop; the four ports of the first four-way valve 4-8 are respectively connected to the coolant inlet branch pipe 4-12 and the liquid-cooled condenser 4-3. The coolant inlet, the coolant inlet of the battery heat exchanger 4-5, and the coolant outlet of the radiator 4-7 are connected; the four ports of the second four-way valve 4-9 are respectively connected to the liquid-cooled condenser 4-3 The outlet of the coolant, the inlet of the first water pump 4-10, the inlet of the second water pump 4-11 and the outlet of the coolant of the battery heat exchanger 4-5 are connected; the outlet of the first water pump 4-10 is connected to the radiator 4 -7 is connected to the coolant inlet, and the outlet of the second water pump 4-11 is connected to the coolant outlet branch pipe 4-13; at least two groups of the thermal management units 4 can be detachably arranged on the frame 1, and the The coolant inlet branch pipe 4-12 is connected to the coolant inlet main pipe 2, and the coolant outlet branch pipe 4-13 is connected to the coolant outlet main pipe 3; the coolant inlet main pipe 2 is connected to the coolant outlet of the energy storage power station The coolant outlet main pipe 3 is connected to the coolant inlet of the energy storage power station.

In order to reduce the operation of replenishing coolant to the thermal management unit and reduce maintenance costs, in this embodiment, as shown in Figures 1 and 2, the frame 1 is provided with a rehydration kettle 5, and the rehydration kettle 5 is connected to the The coolant inlet main pipe 2 is connected, and the liquid replenishment kettle 5 is used to supplement the coolant for the thermal management unit.

In order to have a reasonable and reliable spatial layout of the thermal management unit, reduce the floor space, and facilitate the assembly and disassembly of the thermal management unit 4, in this embodiment, as shown in Figures 1 and 2, the racks 1 are sequentially arranged from bottom to top There are a plurality of support plates 1-1, an installation space is formed between adjacent support plates 1-1, and at least two groups of the thermal management units 4 are detachably arranged in the corresponding installation space from bottom to top; The liquid infusion kettle 5 is arranged on the top of the frame 1 .

In order to optimize the thermal management unit 4, in this embodiment, as shown in Figures 3-6, the housing 4-1 includes a bottom plate 4-1-1 and a mesh plate 4-1 located around the bottom plate 4-1-1 -2, the surrounding mesh plates 4-1-2 form an accommodation space, the cooling fan 4-6 is located outside the accommodation space, the compressor 4-2, the liquid-cooled condenser 4-3, the throttling Device 4-4, battery heat exchanger 4-5, radiator 4-7, first four-way valve 4-8, second four-way valve 4-9, first water pump 4-10 and second water pump 4-11 are all located inside the accommodation space, and the coolant inlet branch pipe 4-12 and the coolant outlet branch pipe 4-13 extend from the inside to the outside of the accommodation space; the thermal management unit 4 also includes a refrigerant channel plate 4-16 and Cooling liquid channel plate 4-17, the refrigerant channel plate 4-16 is used to connect the refrigerant outlet of the liquid-cooled condenser 4-3 with the inlet of the throttling device 4-4, and the outlet of the throttling device 4-4 The outlet is connected to the refrigerant inlet of the battery heat exchanger 4-5, and the liquid-cooled condenser 4-3, throttling device 4-4 and battery heat exchanger 4-5 are integrated and assembled on the refrigerant channel plate 4-16; The coolant channel plate 4-17 is used to connect the two ports corresponding to the first four-way valve 4-8 with the coolant inlet of the liquid-cooled condenser 4-3 and the coolant of the battery heat exchanger 4-5 respectively. The inlet is connected, and the four ports of the second four-way valve 4-9 are respectively connected with the coolant outlet of the liquid-cooled condenser 4-3, the inlet of the first water pump 4-10, the inlet of the second water pump 4-11 and The coolant outlet of the battery heat exchanger 4-5 is connected, and the first water pump 4-10, the second water pump 4-11, the first four-way valve 4-8 and the second four-way valve 4-9 are integrally assembled in the cooling On the liquid channel plate 4-17; the air outlet of the compressor 4-2 is connected to the refrigerant inlet of the liquid-cooled condenser 4-3 through the refrigerant pipe 4-14, and the refrigerant outlet of the battery heat exchanger 4-5 Connect with the air inlet of the compressor 4-2 through the refrigerant pipe 4-14; the coolant inlet of the radiator 4-7 passes through the water pipe 4-15 and through the coolant flow channel plate 4-17 and the first The outlet of the water pump 4-10 is connected, and the coolant outlet of the radiator 4-7 is connected with the inlet of the first four-way valve 4-8 through the water pipe 4-15 and the coolant flow channel plate 4-17. That is, both the refrigerant side and the cooling liquid side adopt an integrated structure, and the integrated structure layout is reasonable and compact, eliminating the need for pipelines connected between integrated parts, saving space, facilitating production and assembly, and reducing costs.

For ease of description and understanding, in this embodiment, as shown in Figures 4-6, the four ports of the first four-way valve 4-8 are respectively A port, B port, C port and D port, and the first four ports Port A of the through valve 4-8 is connected to the coolant inlet of the battery heat exchanger 4-5, port B of the first four-way valve 4-8 is connected to the coolant outlet of the radiator 4-7, and the first four-way valve Port C of 4-8 is connected to the coolant inlet branch pipe 4-12, and port D of the first four-way valve 4-8 is connected to the coolant inlet of the liquid-cooled condenser 4-3; record the second four-way valve 4- The four ports of 9 are A port, B port, C port and D port respectively, and the A port of the second four-way valve 4-9 is connected to the coolant outlet of the battery heat exchanger 4-5, and the second Port B of the four-way valve 4-9 is connected to the inlet of the first water pump 4-10, port C of the second four-way valve 4-9 is connected to the inlet of the second water pump 4-11, and the second four-way Port D of the valve 4-9 is connected with the coolant outlet of the liquid-cooled condenser 4-3.

Specifically, in this embodiment, the liquid-cooled condenser 4-3 is a water-cooled condenser; the radiator 4-7 is a finned radiator; the cooling fan 4-6 is an electronic fan; the second A four-way valve 4-8 and a second four-way valve 4-9 are electronic four-way valves, and the compressor 4-2 is an electric compressor.

This application is to first platformize the small thermal management unit 4, for example, the cooling capacity range of each group of thermal management units 4 is 8KW-12KW, and the heating capacity range is 4-6KW; The management units 4 are combined to meet the needs of customers. For example, if the cooling capacity of the customer requires 40KW, four groups of thermal management units 4 can be used to form a large thermal management unit. The number of thermal management units 4 in this embodiment is 4 groups, and the number of 4 groups of thermal management units 4 is set reasonably. When maintaining one group of thermal management units 4, the remaining three groups of thermal management units 4 are fully loaded to ensure the The management unit runs normally without shutting down.

The assembly process of the thermal management unit of the energy storage power station is as follows:

First complete the assembly and performance testing of each group of thermal management units 4 in the production workshop, then complete the assembly of the frame 1 at the site of the energy storage power station, and then install the rehydration kettle 5 on the top of the frame 1, and connect the rehydration kettle 5 with the The coolant inlet main pipe 2 is connected, and then the thermal management units 4 of each group are sequentially installed in the corresponding installation space from top to bottom, and the coolant inlet branch pipe 4-12 is connected with the coolant water inlet main pipe 2, and Connect the coolant outlet branch pipe 4-13 to the coolant outlet main pipe 3, then connect the coolant inlet main pipe 2 to the coolant outlet of the energy storage power station, and connect the coolant outlet main pipe 3 to the coolant inlet of the energy storage power station .

When one of the thermal management units 4 needs to be maintained, the remaining three thermal management units 4 can run at full load to ensure the normal operation of the thermal management unit without shutting down.

The operation mode of the thermal management unit of the energy storage power station is as follows:

Cooling mode (when the external ambient temperature is high, such as 20-40°C): When the energy storage power station has a cooling demand, the thermal management unit enters the cooling mode, and the operating conditions are as follows: the first four-way valve 4-8 and the second four-way valve The through valve 4-9 moves to the position shown in Figure 4, and the refrigerant (low-temperature and low-pressure gas) is pressurized by the compressor 4-2 (the refrigerant is a high-temperature and high-pressure gas) and enters the liquid-cooled condenser 4-3 to transfer heat to the liquid-cooled condenser. After the cooling liquid of the condenser 4-3, the refrigerant (high-temperature and high-pressure liquid) flows into the throttling device 4-4 for throttling and pressure reduction (the refrigerant is a low-temperature and low-pressure gas-liquid two-phase mixture), and then enters the battery heat exchanger 4-5 Absorb the heat of the coolant in the battery heat exchanger 4-5, and the refrigerant (refrigerant is a low-temperature and low-pressure gas) enters the compressor 4-2 and is pressurized, thereby completing the cycle on the refrigerant side; in the liquid-cooled condenser 4 The heated coolant in -3 enters the first water pump 4-10 through the D port and B port of the second four-way valve 4-9, enters the radiator 4-7 through the first water pump 4-10, and the medium temperature coolant passes through The flat tubes and fins of the radiator 4-7 work with the cooling fan 4-6 to transfer heat to the outside air, and the cooled coolant enters the liquid cooling through the B port and the D port of the first four-way valve 4-8. Heat is absorbed in the condenser 4-3, so that the cooling liquid completes the task of dissipating heat in the external environment; the cooled cooling liquid in the battery heat exchanger 4-5 passes through the ports A and C of the second four-way valve 4-9 The inlet enters the second water pump 4-11, and then flows into the coolant outlet branch pipe 4-13, the coolant outlet main pipe 3 and the coolant inlet of the energy storage power station through the second water pump 4-11 to dissipate heat for the energy storage power station. After absorbing heat The coolant flows out from the coolant outlet of the energy storage power station, and then flows through ports C and A of the first four-way valve 4-8 and enters the battery heat exchanger 4-5 to be cooled by the refrigerant, so that the coolant is supplied to the storage The task of cooling power plants;

Heating mode (when the external ambient temperature is low, such as -30-5°C): When the energy storage power station has a heating demand, the thermal management unit enters the heating mode, and the operating conditions are as follows: the first four-way valve 4-8 and The second four-way valve 4-9 operates to the position shown in Figure 5, and the circulation on the refrigerant side is the same as the above-mentioned refrigeration mode, and will not be repeated; the circulation on the cooling liquid side is as follows: the cooling liquid that absorbs heat in the liquid-cooled condenser 4-3 Enter the second water pump 4-11 through the D port and C port of the second four-way valve 4-9, and then flow into the coolant outlet branch pipe 4-13, the coolant outlet main pipe 3 and the energy storage through the second water pump 4-11 in sequence The coolant inlet of the power station heats the energy storage power station, and the coolant after releasing heat flows out from the coolant outlet of the energy storage power station, and then flows through ports C and D of the first four-way valve 4-8 and enters the liquid-cooled condenser 4 -3 to absorb heat, so that the cooling liquid completes the task of heating the energy storage power station; the cooled cooling liquid in the battery heat exchanger 4-5 flows into the second four-way valve 4-9 through A port and B port of the second four-way valve 4-9 A water pump 4-10 enters the radiator 4-7 through the first water pump 4-10, and the low-temperature coolant passes through the flat tubes and fins in the radiator 4-7 and the effect of the cooling fan 4-6 from the outside air. After absorbing the heat, the coolant after absorbing the heat enters the battery heat exchanger 4-5 through the ports B and A of the first four-way valve 4-8 to transfer the heat to the refrigerant, so that the coolant is completely absorbed from the external environment. hot task;

Natural air cooling mode (when the external ambient temperature is suitable, such as: 5-20°C): When the energy storage power station has cooling requirements and the external ambient temperature is low, the thermal management unit enters the natural air cooling mode, and the first four-way valve 4-8 and the second four-way valve 4-9 run to the position shown in Figure 6, and the refrigerant side does not work; the medium-temperature coolant flowing out from the coolant outlet of the energy storage power station flows through the coolant inlet main pipe 2, coolant The water inlet branch pipe 4-12 and the C port and A port of the first four-way valve 4-8 enter the battery heat exchanger 4-5, and then flow through the A port and B port of the second four-way valve 4-9 and pass through The first water pump 4-10 enters the radiator 4-7, and the medium-temperature coolant transfers heat to the outside air through the flat tubes and fins in the radiator 4-7 and the cooling fan 4-6, and the cooled coolant After passing through the B port and the D port of the first four-way valve 4-8, it flows into the liquid-cooled condenser 4-3, and then enters the second water pump 4-11 through the D port and the C port of the second four-way valve 4-9, and then flows into the second water pump 4-11. The coolant flows into the coolant inlet of the energy storage power station through the coolant outlet branch pipe 4-13 and the coolant outlet main pipe 3 in turn, and the coolant absorbs heat from the energy storage power station and then flows out, thus completing the task of cooling the battery.

The above is only a preferred embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field is within the technical scope disclosed by the utility model. Any equivalent replacement or change of the technical solution and the concept of the utility model shall fall within the scope of protection of the utility model.

Claims (8)

1. The utility model provides a heat management unit in energy storage power station which characterized in that: the heat-dissipation device comprises a rack (1), a cooling liquid water inlet main pipe (2), a cooling liquid water outlet main pipe (3) and at least two groups of heat management units (4), wherein each heat management unit (4) comprises a shell (4-1), a compressor (4-2), a liquid cooling condenser (4-3), a throttling device (4-4), a battery heat exchanger (4-5), a heat-dissipation fan (4-6), a heat sink (4-7), a first four-way valve (4-8), a second four-way valve (4-9), a first water pump (4-10), a second water pump (4-11), a cooling liquid water inlet branch pipe (4-12) and a cooling liquid water outlet branch pipe (4-13), and the heat-dissipation fan (4-6) is used for dissipating heat of the heat sink (4-7); the compressor (4-2), the liquid cooling condenser (4-3), the throttling device (4-4), the battery heat exchanger (4-5) and the compressor (4-2) are sequentially connected to form a refrigerant circulation loop; four ports of the first four-way valve (4-8) are respectively connected with a cooling liquid water inlet branch pipe (4-12), a cooling liquid inlet of the liquid cooling condenser (4-3), a cooling liquid inlet of the battery heat exchanger (4-5) and a cooling liquid outlet of the radiator (4-7); four ports of the second four-way valve (4-9) are respectively connected with a cooling liquid outlet of the liquid cooling condenser (4-3), an inlet of the first water pump (4-10), an inlet of the second water pump (4-11) and a cooling liquid outlet of the battery heat exchanger (4-5); the outlet of the first water pump (4-10) is connected with the cooling liquid inlet of the radiator (4-7), and the outlet of the second water pump (4-11) is connected with the cooling liquid outlet branch pipe (4-13);

at least two groups of heat management units (4) are detachably arranged on the rack (1), the cooling liquid water inlet branch pipes (4-12) are connected with the cooling liquid water inlet main pipe (2), and the cooling liquid water outlet branch pipes (4-13) are connected with the cooling liquid water outlet main pipe (3); the cooling liquid inlet manifold (2) is connected with a cooling liquid outlet of the energy storage power station, and the cooling liquid outlet manifold (3) is connected with a cooling liquid inlet of the energy storage power station.

2. The energy storage power plant thermal management unit of claim 1, characterized in that: a liquid supplementing kettle (5) is arranged on the rack (1), the liquid supplementing kettle (5) is connected with the cooling liquid inlet main pipe (2), and the liquid supplementing kettle (5) is used for supplementing cooling liquid for the heat management unit.

3. The energy storage power station thermal management unit of claim 2, characterized in that: the liquid supplementing water tank is characterized in that a plurality of supporting plates (1-1) are sequentially arranged from bottom to top in the rack (1), an installation space is formed between the supporting plates (1-1), at least two groups of heat management units (4) are sequentially detachably arranged in the corresponding installation space from bottom to top, and the liquid supplementing water tank (5) is arranged at the top of the rack (1).

4. The energy storage power station thermal management unit of claim 3, wherein: the number of the thermal management units (4) is 4 groups.

5. The thermal management unit of the energy storage power station of any one of claims 1 to 4, characterized in that: the shell (4-1) comprises a bottom plate (4-1-1) and screen plates (4-1-2) located on the periphery of the bottom plate (4-1-1), the screen plates (4-1-2) on the periphery surround to form a containing space, the heat dissipation fan (4-6) is located outside the containing space, the compressor (4-2), the liquid cooling condenser (4-3), the throttling device (4-4), the battery heat exchanger (4-5), the radiator (4-7), the first four-way valve (4-8), the second four-way valve (4-9), the first water pump (4-10) and the second water pump (4-11) are located inside the containing space, and the cooling liquid water inlet branch pipe (4-12) and the cooling liquid water outlet branch pipe (4-13) extend to the outside from the inside of the containing space.

6. The thermal management unit of the energy storage power station of any one of claims 1 to 4, characterized in that: the heat management unit (4) further comprises a refrigerant flow channel plate (4-16) and a coolant flow channel plate (4-17), the refrigerant flow channel plate (4-16) is used for connecting a refrigerant outlet of the liquid cooling condenser (4-3) with an inlet of the throttling device (4-4), an outlet of the throttling device (4-4) is connected with a refrigerant inlet of the battery heat exchanger (4-5), and the liquid cooling condenser (4-3), the throttling device (4-4) and the battery heat exchanger (4-5) are integrally assembled on the refrigerant flow channel plate (4-16); the cooling liquid flow channel plate (4-17) is used for connecting two ports corresponding to the first four-way valve (4-8) with a cooling liquid inlet of the liquid cooling condenser (4-3) and a cooling liquid inlet of the battery heat exchanger (4-5) respectively, four ports of the second four-way valve (4-9) are connected with a cooling liquid outlet of the liquid cooling condenser (4-3), an inlet of the first water pump (4-10), an inlet of the second water pump (4-11) and a cooling liquid outlet of the battery heat exchanger (4-5) respectively, and the first water pump (4-10), the second water pump (4-11), the first four-way valve (4-8) and the second four-way valve (4-9) are assembled on the cooling liquid flow channel plate (4-17) in an integrated mode.

7. The energy storage power station thermal management unit of claim 6, wherein: the air outlet of the compressor (4-2) is connected with the refrigerant inlet of the liquid cooling condenser (4-3) through a refrigerant pipe (4-14), and the refrigerant outlet of the battery heat exchanger (4-5) is connected with the air inlet of the compressor (4-2) through the refrigerant pipe (4-14); the cooling liquid inlet of the radiator (4-7) is connected with the outlet of a first water pump (4-10) through a water pipe (4-15) and/or through the cooling liquid channel plate (4-17), and the cooling liquid outlet of the radiator (4-7) is connected with the inlet of a first four-way valve (4-8) through the water pipe (4-15) and/or through the cooling liquid channel plate (4-17).

8. The thermal management unit of the energy storage power station of any one of claims 1 to 4, characterized in that: the liquid cooling condenser (4-3) is a water cooling condenser; the heat radiator (4-7) is a fin heat radiator; the heat dissipation fans (4-6) are electronic fans; the first four-way valve (4-8) and the second four-way valve (4-9) are both electronic four-way valves, and the compressor (4-2) is an electric compressor.

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