Liquid cooling integrated cabinet

Abstract

The utility model provides a liquid cooling integrated cabinet, which belongs to the technical field of liquid cooling systems and comprises a cabinet body and a cooling tower arranged in the cabinet body. The water chilling unit is arranged in the cabinet body and shares a main water inlet pipeline and a confluence water supply pipeline with the cooling tower; and the control cabinet is arranged in the cabinet body and is electrically connected with the water chilling unit and the cooling tower. According to the utility model, a distributed liquid cooling system is changed into a centralized liquid cooling system, and the water chilling unit, the cooling tower and the control cabinet are arranged in the cabinet body, so that the integration degree is high, the total volume of equipment is reduced, unified maintenance is facilitated, and dynamic combined use of the cooling tower and the water chilling unit can be realized; the working mode of the whole liquid cooling system can be reasonably switched based on the external environment condition and the working condition of the energy storage outdoor cabinet, and the optimal efficiency of the system can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling systems, in particular to a liquid cooling integrated cabinet. Background Art

[0002] As the scale and energy density of energy storage containers increase, the heat generated by the system during operation will also increase significantly. Therefore, in order to ensure that the temperature inside the container and the temperature difference between the battery packs are at a reasonable level, the importance of the liquid cooling temperature control system will be further highlighted.

[0003] The current mainstream liquid cooling system uses a chiller. This system removes heat from the cooling liquid through a phase change in the refrigerant. The liquid then enters the cold plate and exchanges heat with the battery pack, reducing the temperature. This system typically provides a one-to-one cooling system between the chiller and a single energy storage container (i.e., a distributed cooling system). Therefore, a typical energy storage power station configuration involves a certain number of energy storage containers, each containing a battery pack, a battery management system (BMS), an energy management system (EMS), a fire protection system, a thermal management system (chiller), and other components. These containers are also equipped with a certain number of PCS control cabinets for electronic control of the energy storage containers.

[0004] However, distributed chillers have problems such as large footprint, low efficiency, high power consumption, high operating costs, and complicated maintenance. Summary of the Invention

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a liquid cooling integrated cabinet.

[0006] In order to achieve the above purpose and other purposes, the present invention is implemented by including the following technical solutions: The present invention proposes a liquid cooling integrated cabinet, which is characterized in that it includes a cabinet body, a cooling tower, which is arranged in the cabinet body; a chiller, which is arranged in the cabinet body and shares a main water inlet pipe and a converging water supply pipe with the cooling tower; a control cabinet, which is arranged in the cabinet body and is electrically connected to the chiller and the cooling tower.

[0007] Furthermore, the chiller is arranged obliquely above the air inlet of the cooling tower, and the control cabinet is arranged below the chiller.

[0008] Furthermore, the cabinet body is provided with a first cabinet door and a second cabinet door, the first cabinet door is located on the side where the cooling tower is located; the second cabinet door is located on the side where the chiller and the control cabinet are located; the first cabinet door is provided with a first handle, and the second cabinet door is provided with a second handle.

[0009] Furthermore, a first air inlet is provided on the first cabinet door, and the first air inlet is located at the air inlet position of the cooling tower; a third air inlet is provided on the second cabinet door, and the third air inlet is located at the air inlet position of the chiller.

[0010] Furthermore, a second air inlet and a first air outlet are provided on the back of the cabinet, the second air inlet is provided at a position corresponding to the first air inlet, and the first air outlet is provided at a position corresponding to the third air inlet.

[0011] Furthermore, a first electric valve and a second electric valve are respectively provided on the inlet pipelines of the chiller and the cooling tower, and the first electric valve and the second electric valve are electrically connected to the control cabinet.

[0012] Furthermore, a first circulating pump pipeline and a second circulating pump pipeline are further provided on the inlet pipeline of the cooling tower, and the first circulating pump pipeline and the second circulating pump pipeline are connected in parallel.

[0013] Furthermore, the first circulation pump pipeline and the second circulation pump pipeline respectively include a first ball valve, a filter, a circulation pump, a check valve and a second ball valve which are sequentially arranged along the liquid path direction.

[0014] Furthermore, the chiller unit includes a plurality of chillers connected in parallel, and a manual valve is provided at the water inlet and outlet of each chiller; and a manual valve is provided at the inlet pipeline and outlet pipeline of the cooling tower.

[0015] Furthermore, the operating modes of the liquid cooling integrated cabinet include a temperature equalization mode, a heating mode, a cooling mode and a standby mode.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model changes the distributed liquid cooling system into a centralized one. By arranging the chiller, cooling tower, and control cabinet in the cabinet, the system has a high degree of integration, reduces the total volume of the equipment, and facilitates unified maintenance. At the same time, it can realize the dynamic combination of the cooling tower and the chiller. The working mode of the entire liquid cooling system can be reasonably switched based on the external environmental conditions and the working conditions of the energy storage outdoor cabinet itself, thus achieving the best efficiency of the system.

[0018] 2. Since the energy consumption of the cooling tower is much lower than that of the chiller, the utility model not only keeps the initial equipment investment basically the same, but also reduces the power consumption of the liquid cooling system by more than 40% during normal operation, thus reducing the operating cost;

[0019] 3. The utility model provides a first cabinet door and a second cabinet door with handles, which can facilitate the maintenance of the cooling tower, the chiller and the control cabinet;

[0020] 4. The utility model can ensure the air inlet and outlet effect of the cooling tower and the chiller by setting multiple air inlets and outlets on the cabinet door, ensuring their stable operation;

[0021] 5. The utility model can overcome the resistance of the cooling tower during normal operation and the loss along the entire system by arranging two circulating pump pipelines in parallel on the inlet pipeline of the cooling tower, and when one circulating pump pipeline fails, it can switch to the other circulating pump pipeline to ensure the continuous operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a liquid cooling integrated cabinet of the present invention.

[0023] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a liquid cooling integrated cabinet of the present invention with the cabinet door removed.

[0024] Figure 3 Shown is a rear view of a liquid cooling integrated cabinet of the present invention.

[0025] Figure 4 Shown is a schematic diagram of the process flow of connecting the liquid cooling integrated cabinet and the energy storage outdoor cabinet in this utility model DETAILED DESCRIPTION

[0026] Please refer to the attached drawings. The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by those skilled in the art. They are not intended to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0028] In this utility model, the serial numbers assigned to components, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. The term "connected" as used in this utility model, unless otherwise specified, includes both direct and indirect connections. The terms "include," "comprising," or any other variations thereof are intended to encompass a non-exclusive inclusion, meaning that in addition to the listed elements, additional elements not expressly listed may also be included.

[0029] like Figure 1 and Figure 2As shown, the present invention provides a liquid cooling integrated cabinet 100, including a cabinet body 110, a chiller 120, a cooling tower 130 and a control cabinet 140. The chiller 120, the cooling tower 130 and the control cabinet 140 are respectively arranged in the cabinet body 110. Part of the pipes of the chiller 120 and the cooling tower 130 are connected. The specific connection method is shown in FIG. Figure 4 The control cabinet 140 is electrically connected to the chiller 120 and cooling tower 130 and is used to control the operation of the chiller 120 and cooling tower 130. The chiller 120, cooling tower 130, and control cabinet 140 are all conventional equipment, and their specific structures are not described here. The cooling tower 130 is preferably a closed cooling tower.

[0030] Specifically, the cooling tower 130 is separately arranged on the left side of the cabinet 110 , the chiller 120 and the control cabinet 140 are arranged on the right side of the cabinet 110 , and the chiller 120 is arranged above the control cabinet 140 .

[0031] Furthermore, the cabinet body 110 is provided with a first handle 111a and a second handle 112a for conveniently opening the cabinet doors. Pulling the first handle 111a opens the first cabinet door 111 on the cooling tower 130 side, and pulling the second handle 112a opens the second cabinet door 112 on the chiller 120 and control cabinet 140 sides. The first cabinet door 111 and the second cabinet door 112 are also provided with a first air inlet 111b and a third air inlet 112b, respectively, for conveniently allowing air to enter the cooling tower 130 and the chiller 120. The first air inlet 111b is located at the air inlet portion of the cooling tower 130, and the third air inlet 112b is located at the air inlet portion of the chiller 120.

[0032] like Figure 3 As shown, the back of the cabinet 110 is further provided with a second air inlet 113 and a first air outlet 114. The second air inlet 113 is located at a position corresponding to the first air inlet 111b, and the first air outlet 114 is located at a position corresponding to the third air inlet 112b. The air outlet is located above the cooling tower 130.

[0033] Since the air inlet portion (usually a louver) of the cooling tower 130 is at its lower end, arranging the chiller 120 obliquely above the air inlet portion of the cooling tower 130 can achieve the maximum air inlet and outlet distance and avoid mutual air inlet and outlet interference.

[0034] like Figure 4As shown, the liquid-cooling integrated cabinet 100 can be integrally connected to a plurality of parallel outdoor energy storage cabinets 200 in a liquid circuit, centrally exchanging heat for the plurality of outdoor energy storage cabinets 200, thereby ensuring that the outdoor energy storage cabinets 200 operate within a safe temperature range. Specifically, the cooling liquid of the plurality of outdoor energy storage cabinets 200 flows out from the outlet of the liquid cooling plate, converges through a pipeline, and then, after passing through a section of the main water inlet pipeline, is split into two paths, one leading to the chiller 120 and the other leading to the cooling tower 130. A first electric valve 121 and a second electric valve 131 are respectively provided on the two inlet pipelines. The first electric valve 121 and the second electric valve 131 are electrically connected to the control cabinet 140 so that the control cabinet 140 can control the on / off of the first electric valve 121 and the second electric valve 131 according to the real-time battery cell temperature and the liquid cooling plate inlet temperature. The chiller 120 may include a plurality of chillers 122 connected in parallel, two in this embodiment. After entering the chiller 120, the cold liquid is diverted into each of the chillers 122 and flows out after being cooled. The cold liquids flowing out of the plurality of chillers 122 converge and flow into the water supply pipe; the water inlet and outlet of each chiller 122 are provided with manual valves for easy maintenance. The inlet and outlet pipes of the cooling tower 130 are provided with manual valves for easy maintenance. The water supply of the chiller 120 and the water supply of the cooling tower 130 converge and enter the converged water supply pipe, and then are diverted into multiple ways to enter the liquid cooling plate inlet of the energy storage outdoor cabinet 200, forming a complete liquid cooling cycle.

[0035] Furthermore, the inlet pipeline of the cooling tower 130 is also provided with a first circulating pump pipeline 132 and a second circulating pump pipeline 133, located after the second electric valve 131, to overcome the resistance of the cooling tower 130 during normal operation and the loss along the entire system. The first circulating pump pipeline 132 and the second circulating pump pipeline 133 are connected in parallel, that is, the second circulating pump pipeline 133 serves as a backup for the first circulating pump pipeline 132. When the first circulating pump pipeline 132 fails, it switches to the second circulating pump pipeline 133 to ensure continuous operation of the system.

[0036] Specifically, the first circulation pump pipeline 132 and the second circulation pump pipeline 133 have the same configuration, namely, including a first ball valve 132a, a filter 132b, a circulation pump 132c, a check valve 132d, and a second ball valve 132e, which are arranged in sequence along the liquid path. The filter 132b is arranged in front of the circulation pump 132c to filter out impurities and particulate matter, ensuring that only clean cold water enters the circulation pump 132c, thereby extending the service life of the circulation pump 132c and ensuring smooth water flow. The arrangement of the first ball valve 132a and the second ball valve 132e can serve as a double insurance function of bidirectionally shutting off the pipeline.

[0037] Furthermore, the liquid cooling integrated cabinet 100 has four operating modes: temperature averaging mode, heating mode, cooling mode, and standby mode. In temperature averaging mode, the control cabinet 140 controls the first electric valve 121 to close and the second electric valve 131 to open, allowing the energy storage outdoor cabinet 200 to communicate only with the cooling tower 130. In heating mode, the control cabinet 140 controls the first electric valve 121 to open, the second electric valve 131 to close, and the heater of the chiller 120 to turn on, allowing the energy storage outdoor cabinet 200 to communicate only with the chiller 120. In the cooling mode, the control cabinet 140 determines the dry-bulb and wet-bulb temperatures of the outdoor environment and calculates whether the cooling tower 130 can meet the temperature control requirements. If so, the first electric valve 121 is closed and the second electric valve 131 is opened, and the energy storage outdoor cabinet 200 is connected only to the cooling tower 130. If not, the first electric valve 121 is opened and the second electric valve 131 is closed, and the energy storage outdoor cabinet 200 is connected only to the chiller 120. In the standby mode, the control cabinet 140 controls the liquid cooling integrated cabinet 100 to remain powered on and not operate.

[0038] Therefore, the present invention effectively overcomes the shortcomings of the prior art and possesses high industrial value. The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A liquid cooling integrated cabinet, characterized in that: include Cabinet, A cooling tower is arranged in the cabinet; A chiller is arranged in the cabinet and shares a main water inlet pipe and a converging water supply pipe with the cooling tower; A control cabinet is arranged in the cabinet body and is electrically connected to the chiller and the cooling tower.

2. The liquid cooling integrated cabinet according to claim 1, characterized in that: The chiller is arranged obliquely above the air inlet portion of the cooling tower, and the control cabinet is arranged below the chiller.

3. The liquid cooling integrated cabinet according to claim 2, characterized in that: The cabinet body is provided with a first cabinet door and a second cabinet door, the first cabinet door is located on the side where the cooling tower is located; the second cabinet door is located on the side where the chiller and the control cabinet are located; the first cabinet door is provided with a first handle, and the second cabinet door is provided with a second handle.

4. The liquid cooling integrated cabinet according to claim 3, characterized in that: The first cabinet door is provided with a first air inlet, and the first air inlet is located at the air inlet position of the cooling tower; the second cabinet door is provided with a third air inlet, and the third air inlet is located at the air inlet position of the chiller.

5. The liquid cooling integrated cabinet according to claim 4, characterized in that: A second air inlet and a first air outlet are provided on the back of the cabinet. The second air inlet is arranged at a position corresponding to the first air inlet, and the first air outlet is arranged at a position corresponding to the third air inlet.

6. The liquid cooling integrated cabinet according to claim 1, characterized in that: A first electric valve and a second electric valve are respectively provided on the inlet pipelines of the chiller and the cooling tower, and the first electric valve and the second electric valve are electrically connected to the control cabinet.

7. The liquid cooling integrated cabinet according to claim 1, characterized in that: A first circulating pump pipeline and a second circulating pump pipeline are further provided on the inlet pipeline of the cooling tower, and the first circulating pump pipeline and the second circulating pump pipeline are connected in parallel.

8. The liquid cooling integrated cabinet according to claim 7, characterized in that: The first circulation pump pipeline and the second circulation pump pipeline respectively include a first ball valve, a filter, a circulation pump, a check valve and a second ball valve which are sequentially arranged along the liquid path direction.

9. The liquid cooling integrated cabinet according to claim 1, characterized in that: The chiller unit includes a plurality of chillers connected in parallel, and a manual valve is provided at the water inlet and outlet of each chiller; and a manual valve is provided at the inlet pipeline and outlet pipeline of the cooling tower.

10. The liquid cooling integrated cabinet according to claim 1, characterized in that: The operating modes of the liquid cooling integrated cabinet include temperature equalization mode, heating mode, cooling mode and standby mode.

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