Liquid cooling system for thermal management of energy storage system

Abstract

The invention discloses a liquid cooling system for thermal management of an energy storage system, the liquid cooling system comprises an energy storage battery pack and a liquid cooling assembly, the energy storage battery pack is composed of a plurality of battery units, the battery units are provided with the liquid cooling assembly, the liquid cooling assembly comprises a liquid cooling shell, a heat conducting plate and an adjusting assembly, the liquid cooling shell wraps the battery unit, a heat conducting plate is arranged between the liquid cooling shell and the battery unit, a liquid cooling channel, a liquid inlet and a liquid outlet are formed in the liquid cooling shell, the liquid inlet and the liquid outlet are connected with an external liquid cooling circulating mechanism through liquid conveying pipes, a sliding groove is formed in the liquid cooling shell, and the liquid conveying pipe is connected with the sliding groove. An adjusting assembly is arranged in the sliding groove in a sliding mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage management, in particular to a liquid cooling system for thermal management of an energy storage system. BACKGROUND

[0002] An energy storage system refers to a device that can store excess energy during periods of low demand and release it during periods of high demand. Energy storage systems can move, convert, and optimize energy, providing various services and functions for power systems. An air conditioning energy storage system is an innovative design that combines energy storage technology with air conditioning systems. It mainly includes components such as energy storage batteries, converters, compressors, etc. The energy storage battery, as the core component, is used to store electrical energy when energy is abundant and release electrical energy to power the air conditioner when energy demand is high, thereby optimizing energy use and reducing operating costs.

[0003] Since the performance of the energy storage battery is affected by temperature, it is necessary to manage the temperature of the energy storage battery. Traditional air cooling thermal management has low cost, but the heat dissipation efficiency is not high and it cannot achieve precise temperature control of the battery. In contrast, liquid cooling technology directly dissipates heat through liquid convection, which has higher heat dissipation efficiency. Currently, the regulation of the liquid cooling system mainly uses flow regulating valves to change the flow and flow rate of the cooling liquid to achieve thermal management of the energy storage battery. Since the energy storage battery is composed of multiple battery packs, it is necessary to manage the temperature of each battery pack, so multiple flow regulating valves are needed to control the flow and flow rate of the cooling liquid, which increases the operating cost. Moreover, the accuracy of the flow regulating valve will gradually decrease during long-term use, making it difficult to accurately control the temperature of the battery.

[0004] Therefore, it is necessary to provide a liquid cooling system for thermal management of an energy storage system to solve the problems raised in the background. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a liquid cooling system for thermal management of an energy storage system, comprising an energy storage battery pack and a liquid cooling assembly, wherein the energy storage battery pack is composed of multiple battery units, and the battery units are provided with liquid cooling assemblies;

[0006] The liquid cooling assembly comprises a liquid cooling shell, a heat conducting plate, and an adjusting assembly, wherein the liquid cooling shell is wrapped around the battery unit, the heat conducting plate is arranged between the liquid cooling shell and the battery unit, the liquid cooling shell is provided with a liquid cooling channel, an inlet, and an outlet, the inlet and the outlet are connected to an external liquid cooling circulation mechanism through a liquid delivery pipe, and the liquid cooling shell is provided with a sliding groove, and the adjusting assembly is slidably arranged in the sliding groove.

[0007] Further, as a preferred, the adjusting assembly comprises an adjusting plate, an adjusting block and a driving plate, wherein the adjusting plate is sealed sliding along the liquid cooling channel, a rotating ring is fixedly arranged on the liquid cooling shell, the adjusting block is fixedly arranged on the adjusting plate and sliding along the rotating ring, and the driving plate is sealingly and rotatably arranged in the rotating ring and drives the adjusting block to slide.

[0008] Further, as a preferred, two T-shaped driving grooves are arranged on the adjusting block.

[0009] Two T-shaped driving rods are fixedly arranged on the driving plate, the T-shaped driving rods are clamped into the T-shaped driving grooves and sliding along the T-shaped driving grooves.

[0010] Further, as a preferred, the T-shaped driving grooves are 1 / 4 helical, one end of the T-shaped driving grooves is close to the driving plate and the other end is close to the adjusting plate along the clockwise helix.

[0011] Further, as a preferred, a hydraulic groove is arranged on the rotating ring, the hydraulic groove and the driving plate form a hydraulic cavity, the hydraulic cavity is provided with an inlet hole and a vent hole, the inlet hole is connected with an external hydraulic driving mechanism through a hydraulic pipe.

[0012] A hydraulic block is fixedly arranged on the driving plate and sealingly sliding along the hydraulic cavity.

[0013] Further, as a preferred, a monitoring unit and a control unit are further included.

[0014] The monitoring unit comprises a temperature monitoring sensor arranged on the battery unit and flow meters arranged on the liquid inlet and liquid outlet.

[0015] The temperature monitoring sensor is used to monitor the temperature of the battery unit in real time and transmit the monitored temperature information to the control unit, and the two flow meters are respectively used to monitor the cooling liquid flow of the liquid inlet and liquid outlet and transmit the monitored data to the control unit.

[0016] Further, as a preferred, the control unit is configured with two control modes, i.e. mode one and mode two.

[0017] The mode one is that when the monitoring unit detects that the temperature of the battery unit is increased, the control unit controls the external liquid cooling circulating mechanism to increase the overall cooling liquid flow to enhance heat dissipation.

[0018] The mode two is: when the monitoring unit detects that one of the plurality of battery unit temperature rises, the control unit controls the hydraulic drive mechanism to fill the hydraulic pressure into the hydraulic cavity, drives the driving plate to rotate and pushes the adjusting plate to slide along the liquid cooling channel to change the size of the liquid cooling channel, thereby increasing the cooling liquid flow rate in the liquid cooling channel to strengthen heat dissipation.

[0019] Compared with the prior art, the application provides a liquid cooling system for thermal management of an energy storage system, which has the following beneficial effects:

[0020] In the application, the flow rate of the cooling liquid is controlled by the adjusting assembly instead of the traditional flow regulating valve, thereby reducing the operating cost. The adjusting plate, the adjusting block and the driving plate are arranged in the adjusting assembly. The hydraulic block is arranged on the driving plate. The hydraulic cavity is formed on the swivel ring. The spiral T-shaped driving groove is formed in the adjusting block. The T-shaped driving rod is arranged on the driving plate. The hydraulic block is driven to rotate along the hydraulic cavity by the hydraulic pressure, thereby driving the T-shaped driving rod to slide along the T-shaped driving groove, and driving the adjusting plate to slide along the liquid cooling channel, so that the size of the liquid cooling channel changes, thereby changing the flow and flow rate of the cooling liquid in the liquid cooling channel, and accurately controlling the temperature of the energy storage battery. The operating cost can be effectively reduced by driving with hydraulic pressure. Only the position of the hydraulic block in the hydraulic cavity needs to be controlled during adjustment to control the flow and flow rate of the cooling liquid in the liquid cooling channel, thereby enabling the liquid cooling system to accurately control the temperature during long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall process of the application;

[0022] Figure 2 It is a schematic diagram of the structure of the energy storage battery and the liquid cooling assembly in the application;

[0023] Figure 3 It is a schematic diagram of the structure of the liquid cooling assembly in the application;

[0024] Figure 4 It is a schematic diagram of the structure of the T-shaped driving rod and the T-shaped driving groove in the application;

[0025] Figure 5 It is an enlarged schematic diagram of A part of Figure 3

[0026] ​In the figure: 1, battery unit; 2, liquid cooling shell; 21, liquid cooling channel; 22, liquid inlet; 23, liquid outlet; 24, swivel ring; 241, hydraulic cavity; 242, liquid inlet hole; 243, air hole; 3, heat conduction plate; 4, adjusting assembly; 41, adjusting plate; 42, adjusting block; 421, T-shaped driving groove; 43, driving plate; 431, T-shaped driving rod; 432, hydraulic block. DETAILED DESCRIPTION

[0027] Embodiment: Please refer to Figures 1-5 In the embodiment of the present application, a liquid cooling system for thermal management of an energy storage system includes an energy storage battery pack and a liquid cooling assembly, wherein the energy storage battery pack is composed of a plurality of battery units 1, and the battery units are provided with the liquid cooling assembly;

[0028] The liquid cooling assembly includes a liquid cooling shell 2, a heat conduction plate 3, and an adjusting assembly 4, wherein the liquid cooling shell 2 is wrapped around the battery unit 1, the heat conduction plate 3 is arranged between the liquid cooling shell 2 and the battery unit 1, the liquid cooling shell 2 is provided with a liquid cooling channel 21, a liquid inlet 22, and a liquid outlet 23, the liquid inlet 22 and the liquid outlet 23 are connected with an external liquid cooling circulating mechanism through a liquid delivery pipe, and the liquid cooling shell 2 is provided with a sliding groove, and the adjusting assembly 4 is slidingly arranged in the sliding groove.

[0029] In the implementation, cooling liquid is introduced into the liquid cooling channel 21 by a liquid cooling circulating mechanism, so that the cooling liquid is in direct contact with the heat conduction plate 3, and the heat conduction plate 3 is in close contact with the battery unit, thereby effectively absorbing and removing the heat generated by the battery unit 1. In this process, the heat conduction plate 3 can effectively isolate the cooling liquid from the battery unit 1 to prevent damage to the battery unit 1 caused by the cooling liquid. Then, a monitoring unit is used to monitor the temperature change of the battery unit 1 in real time. When the temperature of the battery unit 1 is within a normal threshold, cooling liquid is filled into the liquid cooling channel 21 by the liquid cooling circulating mechanism for normal heat dissipation. When the temperature of the battery unit 1 rises, an external hydraulic driving mechanism is controlled by a control unit to fill hydraulic pressure into the hydraulic cavity 241 to drive the driving plate 43 to rotate and push the adjusting plate 41 to slide along the liquid cooling channel 21 to change the size of the liquid cooling channel 21, thereby increasing the flow rate of the cooling liquid in the liquid cooling channel 21 to enhance heat dissipation, thereby achieving accurate control of the temperature of the battery unit 1. The adjusting assembly 4 is driven by the hydraulic driving mechanism to effectively reduce operating costs and avoid inaccurate temperature regulation caused by inaccurate flow adjustment during long-term use.

[0030] In the embodiment, as Figure 3 , Figure 4 and Figure 5The adjusting assembly 4 comprises an adjusting plate 41, an adjusting block 42 and a driving plate 43, wherein the adjusting plate 41 is sealedly slid along the liquid cooling channel 21, a rotating ring 24 is fixedly arranged on the liquid cooling shell 2, the adjusting block 42 is fixedly arranged on the adjusting plate 41 and slid along the rotating ring 24, and the driving plate 43 is sealingly rotatably arranged in the rotating ring 24 and drives the adjusting block 42 to slide.

[0031] In the embodiment, as shown in Figure 4 Two T-shaped driving grooves 421 are arranged on the adjusting block 42.

[0032] Two T-shaped driving rods 431 are fixedly arranged on the driving plate 43, the T-shaped driving rods 431 are clamped into the T-shaped driving grooves 421 and slid along the T-shaped driving grooves 421.

[0033] In the embodiment, as shown in Figure 4 The T-shaped driving grooves 421 are 1 / 4 helical, one end of the T-shaped driving grooves 421 is close to the driving plate 43 and the other end is close to the adjusting plate 41 along the clockwise helix.

[0034] In the implementation, the driving plate 43 is driven to rotate, so that the T-shaped driving rods 431 slide along the T-shaped driving grooves 421, the adjusting block 42 slides along the rotating ring 24, and the adjusting plate 41 further slides along the liquid cooling channel 21, so that the size of the liquid cooling channel 21 changes, the cooling liquid passing space of the liquid cooling channel 21 changes, the cooling liquid flow and flow rate in the liquid cooling channel 21 change under the condition that the liquid supply flow of the liquid cooling circulation mechanism itself is unchanged, the heat dissipation effect is enhanced or weakened, and the temperature of the battery cell 1 is accurately controlled.

[0035] In the embodiment, as shown in Figure 5 A hydraulic groove is arranged on the rotating ring 24, the hydraulic groove and the driving plate 43 form a hydraulic cavity 241, the hydraulic cavity 241 is provided with an inlet hole 242 and a vent hole 243, the inlet hole 242 is connected with an external hydraulic driving mechanism through a hydraulic pipe;

[0036] A hydraulic block 432 is fixedly arranged on the driving plate 43, and the hydraulic block 432 is sealingly slid along the hydraulic cavity 241.

[0037] In particular, the air vent 242 is arranged to ensure that the hydraulic block 432 seals and slides along the hydraulic cavity 241, and the volume of liquid filled in the hydraulic cavity 241 is fixed, and only needs to be adjusted when adjusting the position of the T-shaped drive rod 431 in the T-shaped drive groove 421, i.e. adjusting the size of the liquid cooling channel 21, thereby accurately adjusting the flow and flow rate of the cooling liquid in the liquid cooling channel 21, and accurately controlling the flow and flow rate of the cooling liquid in the liquid cooling channel 21, i.e. accurately controlling the temperature of the battery unit 1, during a long period of use.

[0038] In this embodiment, a monitoring unit and a control unit are further included.

[0039] The monitoring unit includes a temperature monitoring sensor arranged on the battery unit 1 and flow meters arranged on the liquid inlet 22 and the liquid outlet 23.

[0040] The temperature monitoring sensor is used to monitor the temperature of the battery unit 1 in real time and transmit the monitored temperature information to the control unit, and the two flow meters are used to monitor the flow of the cooling liquid of the liquid inlet 22 and the liquid outlet 23 respectively and transmit the monitored data to the control unit.

[0041] In this embodiment, the control unit is configured with two control modes, i.e. mode one and mode two.

[0042] The mode one is that when the monitoring unit detects that the temperature of the battery unit 1 rises, the control unit controls the external liquid cooling circulation mechanism to increase the overall flow of the cooling liquid to enhance heat dissipation.

[0043] The mode two is that when the monitoring unit detects that the temperature of one of the battery units 1 rises, the control unit controls the hydraulic drive mechanism to fill the hydraulic cavity 241 with hydraulic pressure to drive the drive plate 43 to rotate and push the adjusting plate 41 to slide along the liquid cooling channel 21 to change the size of the liquid cooling channel 21, thereby increasing the flow rate of the cooling liquid in the liquid cooling channel 21 to enhance heat dissipation.

[0044] Specifically, due to the performance problems of the plurality of battery units 1 itself, different temperature conditions may occur in the specific use process, and then the control unit is provided with two regulation modes, when the overall temperature of the energy storage battery pack rises, that is, the energy consumption of the air conditioning system is high, the liquid cooling circulation mechanism is controlled to increase the overall cooling liquid output flow, so as to enhance the heat dissipation, when the temperature difference of the single battery unit 1 or the individual temperature rises, the cooling liquid flow and flow rate in the liquid cooling channel 21 are adjusted by the adjusting assembly 4, so as to accurately control the temperature of the battery unit 1, and the liquid cooling assembly can effectively reduce the operation cost while accurately controlling the temperature.

[0045] In summary, in the implementation of the present application, the temperature of each battery unit and the cooling liquid flow in the liquid cooling channel 21 are monitored by the monitoring unit, and each battery unit 1 is independently controlled by the control unit, so as to accurately control the temperature of the energy storage battery pack, and the cooling liquid flow in the liquid cooling channel 21 is adjusted by the adjusting assembly 4 instead of the flow regulating valve, so that the cooling liquid flow in the cooling channel 21 can be accurately adjusted and the temperature of the battery unit 1 can be accurately controlled in the long-term use process, and the operation cost is effectively reduced.

[0046] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A liquid cooling system for thermal management of an energy storage system, characterized in that: It includes an energy storage battery pack and a liquid cooling component, wherein the energy storage battery pack is composed of multiple battery cells (1), and the battery cells are provided with liquid cooling components; The liquid cooling assembly includes a liquid cooling shell (2), a heat-conducting plate (3), and an adjustment component (4). The liquid cooling shell (2) is wrapped around the battery unit (1). A heat-conducting plate (3) is provided between the liquid cooling shell (2) and the battery unit (1). The liquid cooling shell (2) has a liquid cooling channel (21), a liquid inlet (22), and a liquid outlet (23). The liquid inlet (22) and the liquid outlet (23) are connected to an external liquid cooling circulation mechanism through a liquid delivery pipe. The liquid cooling shell (2) has a sliding groove, and the adjustment component (4) is slidably arranged in the sliding groove.

2. The liquid cooling system for thermal management of an energy storage system according to claim 1, characterized in that: The adjustment assembly (4) includes an adjustment plate (41), an adjustment block (42), and a drive plate (43). The adjustment plate (41) slides in a sealed manner along the liquid cooling channel (21). A rotating ring (24) is fixedly installed on the liquid cooling shell (2). The adjustment block (42) is fixedly installed on the adjustment plate (41) and slides along the rotating ring (24). The drive plate (43) is rotatably installed in the rotating ring (24) and drives the adjustment block (42) to slide.

3. A liquid cooling system for thermal management of an energy storage system according to claim 2, characterized in that: The adjustment block (42) has two T-shaped drive slots (421); Two T-shaped drive rods (431) are fixedly installed on the drive plate (43). The T-shaped drive rods (431) are inserted into the T-shaped drive groove (421) and slide along the T-shaped drive groove (421).

4. A liquid cooling system for thermal management of an energy storage system according to claim 3, characterized in that: The T-shaped drive groove (421) is 1 / 4 spiral-shaped, with one end of the T-shaped drive groove (421) close to the drive plate (43) and the other end spiraling clockwise close to the adjustment plate (41).

5. A liquid cooling system for thermal management of an energy storage system according to claim 2, characterized in that: The rotating ring (24) is provided with a hydraulic groove, and the hydraulic groove and the drive plate (43) form a hydraulic cavity (241). The hydraulic cavity (241) is provided with an inlet hole (242) and a vent hole (243). The inlet hole (242) is connected to an external hydraulic drive mechanism through a hydraulic pipe. The hydraulic block (432) is fixedly mounted on the drive plate (43), and the hydraulic block (432) slides in a sealed manner along the hydraulic cavity (241).

6. A liquid cooling system for thermal management of an energy storage system according to claim 5, characterized in that: It also includes a monitoring unit and a control unit; The monitoring unit includes a temperature monitoring sensor installed on the battery unit (1) and a flow meter installed on the inlet (22) and outlet (23); The temperature monitoring sensor is used to monitor the temperature of the battery cell (1) in real time and transmit the monitored temperature information to the control unit. The two flow meters monitor the coolant flow rate of the inlet (22) and outlet (23) respectively and transmit the monitored data to the control unit.

7. A liquid cooling system for thermal management of an energy storage system according to claim 6, characterized in that: The control unit is configured with two control modes, namely mode one and mode two; The first mode is: when the monitoring unit detects that the temperature of the battery cell (1) rises, the control unit controls the external liquid cooling circulation mechanism to increase the overall coolant flow rate to enhance heat dissipation; The second mode is as follows: when the monitoring unit detects that the temperature of one of the battery cells (1) among the multiple battery cells (1) rises, the control unit controls the hydraulic drive mechanism to fill the hydraulic chamber (241) with liquid pressure to drive the drive plate (43) to rotate and push the adjustment plate (41) along the liquid cooling channel (21) to change the size of the liquid cooling channel (21) through the adjustment block (42), thereby increasing the flow rate of the coolant in the liquid cooling channel (21) to enhance heat dissipation.

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