Thermal management device for energy storage equipment

Abstract

The utility model discloses a heat management device for energy storage equipment, which is used for controlling the temperature of the energy storage equipment and comprises a shell, at least one compressor, a first heat exchange device and a liquid cooling unit, and the liquid cooling unit is externally connected with an external pipeline; the compressor is arranged on the shell and used for compressing and driving a refrigerant; the first heat exchange device is arranged at one end of the compressor, and the compressor is connected with the first heat exchange device and used for conducting heat exchange on a refrigerant conveyed by the compressor; the liquid cooling unit is arranged at the side end of the compressor, and a throttling part is connected between the first heat exchange device and the liquid cooling unit; a refrigerant conveyed by the compressor sequentially passes through the first heat exchange device and the throttling component to be connected with the liquid cooling unit and then returns to the compressor to form a cooling loop, the cooling loop is used for cooling the cooling liquid passing through the liquid cooling unit, and therefore temperature control over the energy storage equipment is controlled. The structure is compact, assembling is convenient, and the size and occupied space can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of temperature control for energy storage devices, and particularly to a thermal management device for energy storage devices. Background Art

[0002] An energy storage device refers to a device that can convert electrical energy or other forms of energy into a storable form and release it for use when needed. These devices play an important role in balancing the difference between power supply and demand and improving the stability and reliability of the power system.

[0003] The thermal management device maintains each component of the energy storage device or system within the optimal operating temperature range through precise temperature control to ensure its efficient, safe, and stable operation. During the use of the energy storage device, the battery generates heat. To enable the energy storage device to operate normally, the temperature of the energy storage device is usually controlled and regulated by air cooling. In high-density energy storage devices, the heat dissipation capacity does not meet the requirements. The liquid cooling method has a higher heat dissipation and temperature reduction effect compared to the air cooling method, but it is difficult to assemble and still occupies a relatively large space. Utility Model Content

[0004] The purpose of this application is to provide a thermal management device for energy storage devices to solve the problems of large occupied space and difficult assembly in the above-mentioned prior art, and the following technical solutions are adopted:

[0005] A thermal management device for an energy storage device includes a housing and a liquid cooling unit.

[0006] The liquid cooling unit is connected to an external pipeline and is used to cool the coolant in the external pipeline.

[0007] At least one compressor is provided on the housing and is used to compress and drive the refrigerant.

[0008] A first heat exchange device is provided corresponding to one end of the compressor. The first heat exchange device is connected to the compressor and is used to exchange heat and cool down the refrigerant conveyed by the compressor.

[0009] The liquid cooling unit is arranged at the side end of the compressor, and a throttling component is connected between the first heat exchange device and the liquid cooling unit.

[0010] The compressor conveys the refrigerant through the first heat exchange device, the throttling component, and the liquid cooling unit in sequence and then returns to the compressor to form a cooling circuit, cooling down the coolant passing through the liquid cooling unit.

[0011] Preferably, the liquid cooling unit comprises a driving device and a second heat exchange device, wherein the driving device is integrated on the second heat exchange device, and the driving device drives the coolant to circulate between the second heat exchange device and an external pipeline to cool the energy storage device.

[0012] Preferably, it also includes a detection component, which is respectively arranged on the compressor and the second heat exchange device, and is used to monitor the state of the refrigerant in the compressor and the coolant flowing through the second heat exchange device in real time.

[0013] Preferably, the detection component includes a first temperature and pressure sensor provided at the inlet and a second temperature and pressure sensor provided at the outlet of the compressor, and a first temperature sensor provided at the liquid inlet and a second temperature sensor provided at the liquid outlet of the second heat exchange device.

[0014] Preferably, it further comprises an air induction component, which is arranged on a side away from the compressor and opposite to the first heat exchange device.

[0015] Preferably, the compressor, the first heat exchange device, the throttling component and the liquid cooling unit are connected by pipelines to form a closed loop.

[0016] Preferably, the compressor, the first heat exchange device, the liquid cooling unit, the throttling component and the air induction assembly are all integrated on the casing.

[0017] Preferably, the compressor is arranged perpendicular to the first heat exchange device, and the air induced component is arranged in parallel with the first heat exchange device.

[0018] Preferably, when there are at least two compressors, the compressors are arranged in parallel on the outer casing, and the pipeline between the compressor and the first heat exchange device and the liquid cooling unit is respectively connected to the first heat exchange device and the liquid cooling unit at one end, and is divided into multiple branch pipelines at the other end, which are respectively connected to the outlet and inlet of each compressor.

[0019] The beneficial effects of this application compared to the prior art are:

[0020] (1) Heat is exchanged with the coolant by phase-changing refrigeration. On the premise of meeting the heat dissipation requirements of the energy storage equipment, this setting method has a compact structure, which greatly reduces the volume of the thermal management device and reduces the occupied space, thereby reducing the space occupied by the energy storage equipment and making assembly relatively convenient.

[0021] (2) Both the compressor and the second heat exchange device are provided with detection components, which can monitor and feedback the inlet and outlet temperatures and / or pressure changes of the refrigerant and coolant in the compressor and the second heat exchange device in real time, so that the thermal management device can dynamically adjust the battery temperature of the energy storage device and optimize the overall performance.

[0022] (3) The air induction component is disposed opposite to the first heat exchange device and is located on the side away from the compressor. When the air induction component is working, it can take into account both the compressor and the second heat exchange device, and dissipate heat from the compressor, the first heat exchange device, and the second heat exchange device at the same time, further improving the heat dissipation of the coolant.

[0023] (4) On the above basis, integrating each part on the housing can reduce the overall occupied space. At the same time, it also has the function of a multi-connected unit, which can adjust the rotational speed of the compressor according to the change of the load to change the refrigerating capacity, so as to control the heat exchange cooling effect with the coolant, and thus control the heat exchange effect on the energy storage device. Description of the Drawings

[0024] Figure 1 is a three-dimensional schematic diagram of the heat management device of the present application.

[0025] In the figure:

[0026] 10. Outer shell, 20. Liquid cooling unit, 201. Driving device, 202. Second heat exchange device, 2021. Liquid inlet, 2022. Liquid outlet;

[0027] 30. Compressor, 40. First heat exchange device, 50. Throttling component, 60. Air induction component;

[0028] 70. Detection component, 71. First temperature sensor, 72. Second temperature sensor, 73. First temperature and pressure sensor, 74. Second temperature and pressure sensor;

[0029] 80. Pipeline. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings of the present application. Obviously, the described embodiments of the present application are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0031] Combined with Figure 1 , a heat management device for an energy storage device, which is used to connect an external pipeline to control the temperature of the battery in the energy storage device, includes an outer shell 10 and a liquid cooling unit 20. The liquid cooling unit 20 is provided with a first channel and a second channel. The liquid inlet 2021 and the liquid outlet 2022 of the first channel are connected to the external pipeline for the coolant in the external pipeline to flow through the liquid cooling unit.

[0032] At least one compressor 30, a first heat exchange device 40 and a throttling component 50 are further provided on the housing 10. Among them, the first heat exchange device 40 may be a condenser, and the throttling component 50 may be an expansion valve; the first heat exchange device 40 is provided at one end of the compressor 30, the liquid cooling unit 20 is provided at the side end of the compressor, the compressor 30 is connected to the first heat exchange device 40, and a throttling component 50 is provided between the first heat exchange device 40 and the liquid cooling unit 20 for connection. The compressor 30 drives the refrigerant to sequentially pass through the first heat exchange device 40, the throttling component 50, and the liquid cooling unit 20 and return to the compressor 30. Among them, the throttling component 50 and the compressor 30 are respectively connected to the inlet and outlet of the second channel of the liquid cooling unit 20 to form a cooling circuit to cool the coolant passing through the liquid cooling unit 20; integrating each component on the housing 10 has a compact structure, is convenient for installation, and at the same time reduces the overall occupied space, is convenient for assembly, can reduce the volume of the energy storage device, and reduces the floor area.

[0033] Among them, pipes 80 are sequentially connected between the components, and the refrigerant flows through the pipes 80 between the components (the compressor, the first heat exchange device, the throttling component and the liquid cooling unit), and convectively exchanges heat with the coolant when flowing through the liquid cooling unit 20 to reduce the temperature of the coolant; specifically, the compressor 30 compresses the internal refrigerant into a high-temperature and high-pressure medium and transports it to the first heat exchange device 40 for heat exchange and cooling. The cooled refrigerant forms a low-temperature and low-pressure refrigerant after passing through the throttling component 50, and then is transported to the liquid cooling unit 20 for evaporation heat exchange to form a low-temperature and low-pressure gas and return to the compressor 30, and exchanges heat and cools down with the coolant flowing through the liquid cooling unit in a phase change refrigeration manner. In this embodiment, there are two compressors 30. When the number of compressors 30 is greater than one, one end of the pipe 80 connecting the compressor 30 to the first heat exchange device 40 and the liquid cooling unit is respectively connected to the first heat exchange device 40 and the liquid cooling unit 20, and the other end is divided into multiple branch pipes and respectively connected to the outlets and inlets of the respective compressors 30.

[0034] The liquid cooling unit 20 includes a driving device 201 and a second heat exchange device 202. The driving device 201 is integrated on the second heat exchange device 202 to reduce the occupied space. Specifically, the compressor 30 conveys the compressed refrigerant to pass through the first heat exchange device 40, the throttling component 50, and the second heat exchange device 202 in sequence and then returns to the compressor 30. The first channel and the second channel are both arranged on the second heat exchange device 202. The first channel of the second heat exchange device 202 is externally connected to an external pipeline. The driving device 201 is used to drive the coolant in the second heat exchange device 202 and the external pipeline to circulate, cool the battery in the energy storage device, and the coolant after dissipating heat from the energy storage device will flow to the second heat exchange device 202 for temperature reduction. Among them, the second heat exchange device 202 can be a heat exchanger or an evaporator, and the driving device 201 can be a pump. The refrigerant exchanges heat with the coolant in the form of phase change refrigeration in the second heat exchange device 202 to cool down the coolant. The low-temperature coolant is supplied to the external pipeline by the driving device 201 to control the temperature of the energy storage device.

[0035] The prior art CN221041271U discloses an air-cooled thermal management device. However, when it comes to high-density energy storage devices, the heat dissipation effect is difficult to meet the requirements, and the occupied space is large, which further leads to a large overall occupied space of the energy storage device. Compared with the prior art, the present application uses a water-cooling method to dissipate heat from the energy storage device, and also cools down the coolant through an independent cooling circuit, with a high heat dissipation and cooling efficiency for the energy storage device. At the same time, while meeting the heat dissipation requirements, each component is integrated on the housing 10, and the volume is greatly reduced compared with the existing air-cooled and water-cooled devices, and the assembly is relatively convenient.

[0036] A detection component 70 is also provided on the compressor 30 and the second heat exchange device 202. The detection component 70 includes a first temperature sensor 71, a second temperature sensor 72, a first temperature and pressure sensor 73, and a second temperature and pressure sensor 74. The first temperature sensor 71 and the second temperature sensor 72 are respectively arranged at the liquid inlet 2021 and the liquid outlet 2022 of the first channel of the second heat exchange device 202. The first temperature and pressure sensor 73 and the second temperature and pressure sensor 74 are respectively arranged at the inlet and outlet of the compressor 30, and are used to respectively and real-time monitor the temperature of the coolant at the inlet and outlet of the second heat exchange device 202 and the pressure and temperature changes of the refrigerant at the inlet and outlet of the compressor 30, so as to realize the dynamic adjustment of the battery temperature of the energy storage device and optimize the overall performance.

[0037] It further includes an air induction component 60, which is arranged on the first heat exchange device 40. The air induction component 60 is arranged opposite to the first heat exchange device 40, and the air induction component 60 is located on the side away from the compressor 30, that is, the air induction component 60 and the compressor 30 are respectively arranged on both sides of the first heat exchange device 40; wherein, in combination with Figure 1 , the air induction component 60 and the first heat exchange device 40 are arranged in parallel to increase the heat dissipation area of the first heat exchange device 40; the air induction component 60 can be a fan or a blower, and can dissipate heat in the form of air suction or air blowing. In this embodiment, the air induction component 60 dissipates heat in the form of air suction. When the air induction component 60 is working, it can guide the air on the side of the compressor 30 to flow towards the air induction component 60, and can simultaneously dissipate heat from the compressor 30, the first heat exchange device 40, and the second heat exchange device 202, further improving the overall high-efficiency operation, thereby improving the heat dissipation and cooling effect on the battery in the energy storage device, and reducing the temperature of the thermal management device during overall operation, preventing poor heat dissipation of the thermal management device.

[0038] In combination with Figure 1 , the compressor 30 is arranged perpendicular to the first heat exchange device 40. When there are at least two compressors 30, the compressors 30 are arranged in parallel with each other. The air induction component 60 and the first heat exchange device 40 are arranged in parallel. When the air induction component 60 is working, it can make the air flow through the gap between the compressors 30 and then flow towards the first heat exchange device, and then be discharged by the air induction component 60, avoiding excessive resistance or poor flow during the air flow process, and improving the cooling effect of the thermal management device.

[0039] In summary, by integrating each component on the housing, this setting method has a compact structure, can greatly reduce its own volume, reduce the occupied space, and the air induction component is arranged away from the compressor and is arranged in parallel with the first heat exchange device. When working, when dissipating heat from the first heat exchange device, it can also dissipate heat from the second heat exchange device and the compressor at the same time, avoiding overheating of each component, enabling each component to operate efficiently, and improving the overall heat exchange efficiency; a detection component is provided to cooperate with the compressor to be able to monitor the states of the coolant and the refrigerant in real time, has the function of a multi-split air conditioner, and can be adjusted according to the refrigeration needs, thereby realizing the temperature control of the energy storage device.

Claims

1. A thermal management device for energy storage equipment, characterized in that: Including housing and liquid cooling unit, The liquid cooling unit is connected to an external pipeline and is used to cool the cooling liquid in the external pipeline; at least one compressor, the compressor being disposed on the housing and being used for compressing a driving refrigerant; A first heat exchange device, wherein one end of the compressor is provided with the first heat exchange device, the first heat exchange device is connected to the compressor and is used for heat exchange and cooling of the refrigerant delivered by the compressor; The liquid cooling unit is arranged at the side end of the compressor, and a throttling component is connected between the first heat exchange device and the liquid cooling unit; The refrigerant delivered by the compressor passes through the first heat exchange device, the throttling component, and the liquid cooling unit in sequence and then returns to the compressor to form a cooling circuit, thereby cooling the coolant passing through the liquid cooling unit.

2. The thermal management device for energy storage equipment according to claim 1, characterized in that: The liquid cooling unit includes a driving device and a second heat exchange device, wherein the driving device is integrated on the second heat exchange device, and the driving device drives the cooling liquid to circulate between the second heat exchange device and an external pipeline to cool the energy storage device.

3. The thermal management device for energy storage equipment according to claim 2, characterized in that: It also includes a detection component, which is respectively arranged on the compressor and the second heat exchange device, and is used to monitor the state of the refrigerant in the compressor and the state of the coolant flowing through the second heat exchange device in real time.

4. The thermal management device for energy storage equipment according to claim 3, characterized in that: The detection component includes a first temperature and pressure sensor arranged at the inlet and a second temperature and pressure sensor arranged at the outlet of the compressor, and a first temperature sensor arranged at the liquid inlet and a second temperature sensor arranged at the liquid outlet of the second heat exchange device.

5. The thermal management device for energy storage equipment according to any one of claims 1 to 4, characterized in that: It also includes an air induction component, which is arranged on a side away from the compressor and opposite to the first heat exchange device.

6. The thermal management device for energy storage equipment according to claim 5, characterized in that: The compressor, the first heat exchange device, the throttling component, and the liquid cooling unit are connected by pipelines to form a closed loop.

7. The thermal management device for energy storage equipment according to claim 5, characterized in that: The compressor, the first heat exchange device, the liquid cooling unit, the throttling component and the air induction assembly are all integrated on the casing.

8. The thermal management device for energy storage equipment according to claim 5, characterized in that: The compressor is arranged perpendicular to the first heat exchange device, and the air induction component is arranged in parallel with the first heat exchange device.

9. The thermal management device for energy storage equipment according to claim 6, characterized in that: When there are at least two compressors, the compressors are arranged in parallel on the outer casing, and the pipeline between the compressor and the first heat exchange device and the liquid cooling unit is respectively connected to the first heat exchange device and the liquid cooling unit at one end, and is divided into multiple branch pipelines at the other end, which are respectively connected to the outlet and inlet of each compressor.

Images