Overhead energy storage unit heat management system

Abstract

The utility model relates to the technical field of energy storage heat management, and discloses an overhead energy storage unit heat management system which comprises a refrigeration pipeline, a compressor, a condenser, a plate heat exchanger, a battery liquid inlet and outlet pipeline and a PCS liquid inlet and outlet pipeline. A condenser is fixedly installed on the top of the plate heat exchanger, a condensation fan is fixedly installed on the top of the condenser, a liquid outlet and inlet port of the plate heat exchanger is correspondingly communicated with a battery liquid inlet and outlet pipeline, and a first water pump and a PTC heater are sequentially arranged in the battery liquid inlet and outlet pipeline. The temperature state of the liquid entering the PCS is guaranteed, so that the risk hidden danger that condensate water exists in the PCS is reduced, in addition, when the air temperature is low in spring, autumn and winter, the battery does not need to be cooled, a PCS cooling loop is independently started, system power consumption is reduced, and energy conservation and emission reduction are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage thermal management, and more specifically, to a thermal management system for a top-mounted energy storage unit. Background Art

[0002] As an advanced cooling equipment, the energy storage liquid cooling unit has become the main cooling solution for data centers and large industrial facilities. With the continuous advancement of technology and the continuous expansion of application fields, liquid cooling units will play an important role in more fields. The energy storage liquid cooling units are divided into horizontal units and vertical units, both of which are installed inside the cabinet. However, since the existing energy storage liquid cooling units generally have air intake from the front and air outlet from the back, if the cabinets are placed front and back, the air outlet resistance will increase, affecting the heat dissipation effect on the condensation side and reducing the overall cooling performance. At the same time, in terms of PCS cooling, either it does not have liquid cooling function, or if it shares coolant with the battery, the temperature of the liquid entering the PCS will be at a lower state, increasing the risk of condensed water in the PCS. Based on this, the utility model designs a roof-mounted energy storage unit thermal management system to solve the above problems. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a top-mounted energy storage unit thermal management system to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A thermal management system for a top-mounted energy storage unit includes a refrigeration pipeline, a compressor, a condenser, a plate heat exchanger, a battery inlet and outlet liquid pipeline, and a PCS inlet and outlet liquid pipeline. The compressor, condenser, and plate heat exchanger are all arranged in the refrigeration pipeline in sequence. A condensing fan is fixedly installed on the top of the condenser. The inlet and outlet ports of the plate heat exchanger are correspondingly connected to the battery inlet and outlet liquid pipelines. A first water pump and a PTC heater are sequentially arranged in the battery inlet and outlet liquid pipelines. The battery inlet and outlet liquid pipelines and the PCS inlet and outlet liquid pipelines are connected in parallel to each other. A second water pump and a low-temperature water tank are sequentially arranged in the PCS inlet and outlet liquid pipelines.

[0006] As a preferred technical solution of the present invention, a controller is fixedly installed on the outside of the condenser, and the output end of the controller is electrically connected to the input end of the compressor and the condensing fan.

[0007] As a preferred technical solution of the present invention, an electronic expansion valve is provided in the refrigeration pipeline between the condenser and the plate heat exchanger.

[0008] As a preferred technical solution of the present invention, a first monitoring component is provided in the refrigeration pipeline, and the first monitoring component is composed of a pressure sensor a and a temperature sensor a.

[0009] As a preferred technical solution of the present invention, a second monitoring component is provided in both the battery inlet and outlet liquid pipelines and the PCS inlet and outlet liquid pipelines, and the second monitoring component consists of a pressure sensor b and a temperature sensor b.

[0010] As a preferred technical solution of the present invention, the number of the condensing fans is two, and the two condensing fans are diagonally distributed on the top of the condenser.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model arranges the condensing fan on the top of the condenser, thereby forming a state where air enters from the front and exhausts from the top. No matter how the cabinet is placed, the air outlet resistance will not be increased to affect the heat exchange performance. The battery inlet and outlet liquid pipelines and the PCS inlet and outlet liquid pipelines are connected in parallel but are not interconnected internally. If it is in a high temperature environment in summer, the battery inlet and outlet liquid pipelines can provide auxiliary heat exchange and cooling for the PCS inlet and outlet liquid pipelines. If it is in a low temperature environment in winter, the PCS inlet and outlet liquid pipelines can provide auxiliary heat exchange and heating for the battery inlet and outlet liquid pipelines, so that the PCS cooling has an independent liquid cooling function, and there is no need to share coolant with the battery, which is beneficial to ensuring the temperature state of the liquid entering the PCS, thereby reducing the risk of condensation water in the PCS. In addition, in spring, autumn and winter when the temperature is low, the battery does not need to be cooled. The PCS cooling circuit is opened separately to reduce system power consumption, which is beneficial to energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a top view of the refrigeration pipeline in a thermal management system of a top-mounted energy storage unit of the utility model;

[0014] Figure 2 This is a structural schematic diagram of a thermal management system for a top-mounted energy storage unit in the utility model.

[0015] In the figure: 1. Refrigeration pipeline; 101. Compressor; 102. Condenser; 1021. Condensing fan; 1022. Controller; 103. Electronic expansion valve; 2. Plate heat exchanger; 3. Battery inlet and outlet liquid pipelines; 301. First water pump; 302. Heater; 4. PCS inlet and outlet liquid pipelines; 401. Second water pump; 402. Low-temperature water tank; 5. First monitoring component; 501. Pressure sensor a; 502. Temperature sensor a; 6. Second monitoring component; 601. Pressure sensor b; 602. Temperature sensor b. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] like Figures 1 to 2 As shown, the utility model provides a top-mounted energy storage unit thermal management system, including a refrigeration pipeline 1, a compressor 101, a condenser 102, a plate heat exchanger 2, a battery inlet and outlet liquid pipeline 3 and a PCS inlet and outlet liquid pipeline 4. The compressor 101, the condenser 102 and the plate heat exchanger 2 are all arranged in the refrigeration pipeline 1 in sequence. A condensing fan 1021 is fixedly installed on the top of the condenser 102, so that the state of air intake from the front and air outlet from the top can be formed. No matter how the cabinet is placed, the air outlet resistance will not be increased to affect the heat exchange performance. The inlet and outlet ports of the plate heat exchanger 2 are correspondingly connected to the battery inlet and outlet liquid pipeline 3. The battery inlet and outlet liquid pipeline 3 is connected in accordance with the corresponding A first water pump 301 and a PTC heater 302 are provided. The first water pump 301 is used to circulate and pump the liquid in the battery inlet and outlet liquid pipelines 3. The battery inlet and outlet liquid pipelines 3 and the PCS inlet and outlet liquid pipelines 4 are connected in parallel. If it is in a high temperature environment in summer, the battery inlet and outlet liquid pipelines 3 can exchange heat and cool the PCS inlet and outlet liquid pipelines 4. If it is in a low temperature environment in winter, the PCS inlet and outlet liquid pipelines 4 can exchange heat and heat the battery inlet and outlet liquid pipelines 3. A second water pump 401 and a low-temperature water tank 402 are sequentially provided in the PCS inlet and outlet liquid pipelines 4. The second water pump 401 is used to circulate and pump the liquid in the PCS inlet and outlet liquid pipelines 4.

[0019] Among them, such as Figure 1 As shown, a controller 1022 is fixedly installed on the outside of the condenser 102, and the output end of the controller 1022 is electrically connected to the input end of the compressor 101 and the condensing fan 1021, thereby achieving the purpose of facilitating the control of the operating status of the compressor 101 and the condensing fan 1021.

[0020] Among them, such as Figure 2As shown, an electronic expansion valve 103 is provided in the refrigeration pipeline 1 between the condenser 102 and the plate heat exchanger 2. The electronic expansion valve 103 can throttle the medium-temperature and high-pressure liquid refrigerant to become a low-temperature and low-pressure mixed refrigerant. Then, the low-temperature and low-pressure mixed refrigerant enters the plate heat exchanger 2, so that it absorbs the liquid heat in the battery inlet and outlet liquid pipelines 3 to achieve a cooling effect.

[0021] Among them, such as Figure 2 As shown, a first monitoring assembly 5 is provided in the refrigeration pipeline 1. The first monitoring assembly 5 is composed of a pressure sensor a501 and a temperature sensor a502. The first monitoring assembly 5 can monitor the refrigerant pressure and temperature of the refrigeration pipeline 1. A second monitoring assembly 6 is provided in both the battery inlet and outlet pipelines 3 and the PCS inlet and outlet pipelines 4. The second monitoring assembly 6 is composed of a pressure sensor b601 and a temperature sensor b602. The second monitoring assembly 6 can monitor the fluid pressure and temperature in the battery inlet and outlet pipelines 3 and the PCS inlet and outlet pipelines 4.

[0022] Among them, such as Figure 1 As shown, there are two condensing fans 1021 , and the two condensing fans 1021 are diagonally distributed on the top of the condenser 102 to facilitate sufficient cooling of the condenser 102 .

[0023] The working principle of this utility model:

[0024] By placing the condensing fan 1021 on the top of the condenser 102, a state of air intake from the front and air outlet from the top can be formed. No matter how the cabinet is placed, the air outlet resistance will not be increased to affect the heat exchange performance. The first water pump 301 is used to circulate the liquid in the battery inlet and outlet pipes 3, and the second water pump 401 is used to circulate the liquid in the PCS inlet and outlet pipes 4. The refrigerant in the plate heat exchanger 2 is sucked in by the compressor 101 and compressed into high-pressure gas and sent to the condenser 102. The condensing fan 1021 cools the condenser 102, so that the high-pressure gas passing through the condenser 102 forms Electronic expansion valve 103 throttles medium-temperature, high-pressure liquid refrigerant into low-temperature, low-pressure wet steam. This low-temperature, low-pressure wet steam then enters plate heat exchanger 2, absorbing heat from the liquid in battery inlet and outlet lines 3 to achieve a cooling effect. Battery inlet and outlet lines 3 and PCS inlet and outlet lines 4 are connected in parallel but not internally interconnected. In high summer temperatures, battery inlet and outlet lines 3 provide auxiliary cooling for PCS inlet and outlet lines 4. In low winter temperatures, PCS inlet and outlet lines 4 provide auxiliary heating for battery inlet and outlet lines 3. This design provides independent liquid cooling for the PCS, eliminating the need to share coolant with the batteries. This helps maintain the temperature of the liquid entering the PCS, thereby reducing the risk of condensation in the PCS. Furthermore, during cooler spring, autumn, and winter months, when battery cooling is not required, the PCS cooling circuit can be activated independently, reducing system power consumption and contributing to energy conservation and emissions reduction.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal management system for a top-mounted energy storage unit, characterized in that: It includes a refrigeration pipeline (1), a compressor (101), a condenser (102), a plate heat exchanger (2), a battery inlet and outlet pipeline (3), and a PCS inlet and outlet pipeline (4); The compressor (101), condenser (102) and plate heat exchanger (2) are sequentially arranged in the refrigeration pipeline (1); a condensing fan (1021) is fixedly installed on the top of the condenser (102); the liquid inlet and outlet ports of the plate heat exchanger (2) are correspondingly connected to the battery liquid inlet and outlet pipelines (3); The battery liquid inlet and outlet pipeline (3) is provided with a first water pump (301) and a PTC heater (302) in sequence. The battery liquid inlet and outlet pipeline (3) and the PCS liquid inlet and outlet pipeline (4) are connected in parallel with each other. The PCS liquid inlet and outlet pipeline (4) is provided with a second water pump (401) and a low-temperature water tank (402) in sequence.

2. A thermal management system for a top-mounted energy storage unit according to claim 1, characterized in that: A controller (1022) is fixedly mounted on the outside of the condenser (102), and an output end of the controller (1022) is electrically connected to input ends of the compressor (101) and the condensing fan (1021).

3. A thermal management system for a top-mounted energy storage unit according to claim 1, characterized in that: An electronic expansion valve (103) is provided in the refrigeration pipeline (1) between the condenser (102) and the plate heat exchanger (2).

4. A thermal management system for a top-mounted energy storage unit according to claim 1, characterized in that: A first monitoring component (5) is provided in the refrigeration pipeline (1), and the first monitoring component (5) is composed of a pressure sensor a (501) and a temperature sensor a (502).

5. The thermal management system of a top-mounted energy storage unit according to claim 1, characterized in that: A second monitoring component (6) is provided in both the battery liquid inlet and outlet pipelines (3) and the PCS liquid inlet and outlet pipelines (4). The second monitoring component (6) is composed of a pressure sensor b (601) and a temperature sensor b (602).

6. A thermal management system for a top-mounted energy storage unit according to claim 1, characterized in that: The number of the condensing fans (1021) is two, and the two condensing fans (1021) are diagonally distributed on the top of the condenser (102).

Images