Energy storage cabinet temperature control system and energy storage cabinet

Abstract

The utility model discloses a kind of energy storage cabinet temperature control systems, comprising: heat dissipation equipment, for the PCS heat dissipation of energy storage cabinet;Compressor refrigeration system, including circulating intercommunication evaporator, compressor and condenser;The evaporator can be through the heat dissipation equipment to the PCS heat dissipation when the compressor refrigeration system operates.In some technical solutions, the heat dissipation equipment includes ventilation device for ventilation to the PCS, and the evaporator can cause wind body heat dissipation to the ventilation device.It can be through the refrigeration function of compressor refrigeration system, heat is dissipated, can avoid the problem that the heat dissipation equipment power is too large at PCS, and the problem that the power is too large and easy to leak when using fan to carry out air cooling or using liquid pump drive to carry out liquid cooling occurs, to effectively solve the problem that energy storage cabinet temperature control system is not good to the use effect of PCS.The utility model further discloses a kind of energy storage cabinet including above-mentioned energy storage cabinet temperature control system.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more specifically, to an energy storage cabinet temperature control system, and to an energy storage cabinet including the above-mentioned energy storage cabinet temperature control system. Background Technology

[0002] Industrial and commercial energy storage cabinets require the use of PCS (Power Conversion System). Currently, the PCS is installed inside the cabinet cavity, which is open on both sides to allow low-temperature air to enter from one side and exchange heat with the PCS to cool it. Alternatively, some existing technologies utilize liquid cooling systems, where heat is transferred to an external heat exchanger, which is then air-cooled.

[0003] In the process of realizing this utility model, the inventor discovered that the prior art has at least the following problems: the heat exchange of PCS is relatively large under some operating conditions, so a high-power fan is required for cooling, which leads to high noise and poor performance. Utility Model Content

[0004] In view of this, the first objective of this utility model is to provide an energy storage cabinet temperature control system that can effectively solve the problem of poor performance of the energy storage cabinet temperature control system on the PCS. The second objective of this utility model is to provide an energy storage cabinet including the above-mentioned energy storage cabinet temperature control system.

[0005] To achieve the first objective mentioned above, this utility model provides the following technical solution:

[0006] A temperature control system for an energy storage cabinet, comprising:

[0007] Heat dissipation equipment is used to dissipate heat from the PCS of the energy storage cabinet;

[0008] A compression refrigeration system includes an evaporator, a compressor, and a condenser that are connected in a cycle; when the compression refrigeration system is running, the evaporator can dissipate heat from the PCS through the heat dissipation device.

[0009] In some technical solutions, the heat dissipation device includes a ventilation device for ventilating the PCS, and the evaporator is capable of dissipating heat from the airflow generated by the ventilation device.

[0010] During operation, the compression refrigeration system can be activated, and further, the heat dissipation equipment can be turned on. This allows the heat dissipation equipment to radiate heat from the PCS, directly or indirectly transferring it to the evaporator, where it is then carried away by the condenser of the compression refrigeration system to the outside. In this energy storage cabinet temperature control system, natural air cooling is no longer used alone; instead, the heat is dissipated through the refrigeration function of the compression refrigeration system, allowing for improved cooling efficiency based on actual needs. Therefore, this setup avoids the problems caused by excessive power consumption of the heat dissipation equipment at the PCS, such as excessive noise when using a fan for air cooling or excessive power consumption and leakage when using a liquid pump for liquid cooling. In conclusion, this energy storage cabinet temperature control system effectively solves the problem of poor performance of energy storage cabinet temperature control systems on the PCS.

[0011] In some technical solutions, the heat dissipation device includes a dry cooler for air cooling the PCS, and the evaporator is capable of dissipating heat from the fluid flowing in the dry cooler.

[0012] In some technical solutions, a closed chamber is provided to accommodate the PCS, the dry cooler is disposed in the closed chamber, and the heat dissipation device also includes a ventilation device for returning the air from the PCS outlet to the PCS inlet after passing through the dry cooler.

[0013] In some technical solutions, the dry cooler is inclined and a water receiving tray is provided at the bottom of the dry cooler; the compressor is located in a closed chamber and arranged in the air path of the ventilation device.

[0014] In some technical solutions, a battery heat exchange device is also included for exchanging heat with the battery pack of the energy storage cabinet; the evaporator includes a refrigerant channel and a liquid cooling channel that can exchange heat with each other, the refrigerant channel is connected between the compressor and the condenser, and the battery heat exchange device, the heat dissipation device and the liquid cooling channel are connected to the main liquid cooling system.

[0015] In some technical solutions, the battery heat exchange device and the heat dissipation equipment are connected in parallel in the main liquid cooling system.

[0016] In some technical solutions, the heat dissipation device further includes a heat dissipation inlet, a heat dissipation outlet, a heat dissipation supply outlet, and a heat dissipation return outlet; the heat dissipation supply outlet and the heat dissipation return outlet are respectively connected to both ends of the PCS liquid cooling plate or to both ends of a dry cooler used for air cooling of the PCS; the heat dissipation inlet and the heat dissipation outlet are connected to the main liquid cooling system; the heat dissipation inlet and the heat dissipation outlet are connected one-to-one with the heat dissipation supply outlet and the heat dissipation return outlet or achieve heat exchange through an intermediate heat exchanger.

[0017] In some technical solutions, the heat dissipation device further includes a circulation channel, the two ends of which are respectively connected to the heat dissipation liquid supply port and the heat dissipation liquid return port to form a circulation channel; and / or, the heat dissipation device further includes an external radiator, the two ends of which are respectively connected to the heat dissipation liquid supply port and the heat dissipation liquid return port to form a circulation channel.

[0018] Some technical solutions also include a flow regulating valve; the main liquid cooling system includes a main circulation pump for driving the fluid circulation flow;

[0019] The heat dissipation outlet and heat dissipation inlet of the heat dissipation device are respectively connected between the heat exchange outlet of the battery heat exchange device and the inlet of the liquid cooling channel, or connected between the liquid cooling channel outlet and the heat exchange inlet of the battery heat exchange device.

[0020] The heat dissipation inlet is connected to the outlet end of the main circulation pump, and the heat dissipation outlet is connected to the inlet end of the main circulation pump.

[0021] The flow regulating valve is used to adjust the flow rate of the heat dissipation inlet of the heat dissipation equipment.

[0022] Some technical solutions also include a dehumidification coil, which is connected to the main liquid cooling system or arranged in parallel with the refrigerant channel.

[0023] To achieve the second objective mentioned above, this utility model also provides an energy storage cabinet, which includes any of the above-mentioned energy storage cabinet temperature control systems, including a PCS, wherein a heat dissipation device in the energy storage cabinet temperature control system dissipates heat from the PCS. Since the above-mentioned energy storage cabinet has the aforementioned technical effects, an energy storage cabinet with this energy storage cabinet temperature control system should also have corresponding technical effects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an energy storage cabinet temperature control system provided in an embodiment of this utility model;

[0026] Figure 2 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0027] Figure 3A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0028] Figure 4 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0029] Figure 5 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0030] Figure 6 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0031] Figure 7 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model;

[0032] Figure 8 This is a schematic diagram of another energy storage cabinet temperature control system provided in an embodiment of the present utility model.

[0033] The following labels are shown in the attached diagram:

[0034] Heat dissipation equipment 1. Compression refrigeration system 2. Battery heat exchange device 3. Dehumidification coil 4. Main liquid cooling system 5.

[0035] Ventilation device 1-1, dry cooler 1-2, heat dissipation liquid inlet 1-3, heat dissipation liquid outlet 1-4, heat dissipation liquid supply port 1-5, heat dissipation liquid return port 1-6, intermediate heat exchanger 1-7, circulation connecting channel 1-8, external radiator 1-9, flow regulating valve 1-10, PCS liquid cooling plate 1-11, auxiliary circulation pump 1-12;

[0036] Evaporator 2-1, Compressor 2-2, Condenser 2-3;

[0037] Heat exchanger inlet 3-1, heat exchanger outlet 3-2, heat exchanger supply port 3-3, heat exchanger return port 3-4, battery pack liquid cooling plate 3-5;

[0038] Main circulation pump 5-1, electric heating device 5-2. Detailed Implementation

[0039] This utility model discloses a temperature control system for an energy storage cabinet, which can effectively solve the problem of poor performance of the energy storage cabinet temperature control system on the PCS.

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figures 1-8 , Figure 1 A schematic diagram of the structure of an energy storage cabinet temperature control system provided in an embodiment of this utility model; Figure 2 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 3 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 4 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 5 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 6 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 7 A schematic diagram of another energy storage cabinet temperature control system provided in this embodiment of the utility model; Figure 8 This is a schematic diagram of another energy storage cabinet temperature control system provided in an embodiment of the present utility model.

[0042] In some embodiments, as shown in the appendix Figure 1 , 2 As shown in Figures 3, 4, 5, 6, 7, and 8, a temperature control system for an energy storage cabinet is provided. The energy storage cabinet can be an industrial or commercial energy storage cabinet. Specifically, the temperature control system for the energy storage cabinet includes a heat dissipation device 1 and a compression refrigeration system 2.

[0043] The heat dissipation device 1 is used for heat dissipation of the PCS (Power Conversion System) in the energy storage cabinet, so as to directly or indirectly conduct heat away from the heat-generating components in the PCS. The heat dissipation methods for the PCS include at least the following two: one is liquid cooling, such as immersion liquid cooling or heat exchange liquid cooling. Heat exchange liquid cooling can use a heat exchanger with a circulating liquid cooling fluid, where the heat exchanger directly contacts the heat-generating components in the PCS to achieve heat exchange; the other is air cooling, such as by installing dry coolers 1-2 to form a low-temperature airflow supplied to the PCS. This can be either cooling the airflow outside the cabinet before supplying it to the PCS, or cooling the airflow from the PCS before returning it to the PCS. Air cooling can also use a fan for direct ventilation to the PCS.

[0044] The compression refrigeration system 2 mainly includes an evaporator 2-1, a compressor 2-2, and a condenser 2-3 connected in a circulating manner, so that the refrigerant circulates sequentially through the evaporator 2-1, compressor 2-2, and condenser 2-3. Generally, the evaporator 2-1 absorbs heat, and after absorbing heat, the refrigerant becomes gaseous. This gaseous refrigerant is compressed by the compressor 2-2, increasing its temperature, and then flows through the condenser 2-3, releasing heat and cooling down to form liquid refrigerant. After throttling, the liquid refrigerant becomes low-temperature refrigerant, which then absorbs heat again in the evaporator 2-1. The specific operating principle of the compression refrigeration system 2 can also be referenced from refrigeration and air conditioning systems.

[0045] When the compression refrigeration system 2 is running, the evaporator 2-1 can dissipate heat to the PCS through the heat dissipation device 1. At least the following solutions are possible: One solution is that the heat dissipation device 1 is a fan, which cools the airflow through the evaporator 2-1 before it flows through the PCS to absorb heat and reheat, thus achieving cooling; another solution is that the heat dissipation device 1 is a dry cooler 1-2, where the PCS can have its own fan, and the dry cooler 1-2 and the evaporator 2-1 exchange heat through a circulating liquid-cooled channel, with the dry cooler 1-2 cooling the airflow before supplying it to the PCS; yet another solution is that the heat dissipation device 1 is a liquid-cooled heat exchanger, directly contacting the heat-generating components in the PCS, with the liquid-cooled heat exchanger and the evaporator 2-1 exchanging heat through a circulating liquid-cooled channel; yet another solution is that the heat dissipation device 1 is a heat-conducting structure to directly conduct heat to the evaporator 2-1; yet another solution is that the heat dissipation device 1 is a liquid supply port to supply the PCS with a low-temperature fluid, such as water, used to cool the evaporator 2-1. Of course, the above solutions are not the only options; the goal is to ensure that at least a portion of the heat from the heat dissipation device 1 is dissipated through the evaporator 2-1. Furthermore, some of the above solutions can be combined. For example, the heat dissipation device 1 can consist only of the dry cooler 1-2 (in which case ventilation can be achieved using an external fan or natural convection), or only of a fan, or it can include both a fan and the dry cooler 1-2, directly combining the fan and the dry cooler 1-2 together. The dry cooler 1-2 refers to a heat exchanger that exchanges heat through a flowing airflow, with a heat exchange fluid circulating within it for heat exchange before exiting.

[0046] In operation, the compression refrigeration system 2 can be activated, and the heat dissipation device 1 can be further activated. The heat dissipation device 1 dissipates heat from the PCS, which is then directly or indirectly transferred to the evaporator 2-1 and subsequently carried away by the condenser 2-3 of the compression refrigeration system 2 to the outside. In the above-mentioned energy storage cabinet temperature control system, heat is no longer solely dissipated through natural air cooling, but through the cooling function of the compression refrigeration system 2. This allows for improved cooling efficiency based on actual needs. Therefore, this setup avoids the problems caused by excessive power of the heat dissipation device 1 at the PCS, such as excessive noise when using a fan for air cooling or excessive power consumption and leakage when using a liquid pump for liquid cooling. In summary, this energy storage cabinet temperature control system effectively solves the problem of poor performance of the energy storage cabinet temperature control system on the PCS.

[0047] In some embodiments, the heat dissipation device 1 may include a ventilation device 1-1 for ventilating the PCS, and the evaporator 2-1 may dissipate heat from the airflow generated by the ventilation device 1-1 to achieve heat dissipation for the PCS. Direct heat dissipation through the evaporator 2-1 can reduce the number of workpieces and reduce energy consumption. Specifically, the location of the evaporator 2-1 may include at least two examples: one example is that it may be located at the PCS air outlet, so that the airflow from the PCS flows through the evaporator 2-1 for cooling, and then the cooled airflow is guided back to the PCS through the ventilation device 1-1, allowing a limited range of temperature rise along the return path (always below the PCS air outlet temperature); another example is that it may be located at the PCS air inlet, so that external air (outside the cabinet and / or from the PCS air outlet) flows through the evaporator 2-1 for cooling before being directly supplied to the PCS air inlet. The first example above makes it easier to control the PCS air inlet temperature. In this context, ventilation device 1-1 is generally a fan, but it can also be any other device that causes airflow.

[0048] In some embodiments, the heat dissipation device 1 may include a dry cooler 1-2 for air cooling of the PCS. That is, airflow can be directed through the dry cooler 1-2 via a ventilation device 1-1 further provided in the heat dissipation device 1-1 or a ventilation device 1-1 in other devices such as the PCS, to cool the airflow. The cooled airflow is then supplied to the PCS to absorb heat from its heat-generating components. The evaporator 2-1 dissipates heat from the fluid flowing in the dry cooler 1-2. In this way, the temperature of the dry cooler 1-2 can be controlled by adjusting the fluid flow rate, preventing the outlet air temperature from becoming too low.

[0049] The location of the dry cooler 1-2 can be exemplified in at least two ways. For example, the location of the evaporator 2-1 mentioned above can be at the PCS air outlet or at the PCS air inlet. Specifically, it can be set according to needs, but it is generally set at the air outlet to better control the air inlet temperature.

[0050] In some embodiments, the aforementioned compression refrigeration system 2 generally also needs to dissipate heat from the battery pack of the energy storage cabinet. To facilitate heat dissipation of the battery pack, a main liquid cooling system 5 is generally provided to exchange heat with the evaporator 2-1 of the compression refrigeration system 2, so that direct or indirect heat exchange can be carried out between the main liquid cooling system 5 and the battery pack. The heat dissipation device 1 can also be connected to the main liquid cooling system 5. Of course, the heat dissipation of the battery pack and the heat dissipation of the PCS can also be separate from the compression refrigeration system 2, such as using different compression refrigeration systems.

[0051] Specifically, the energy storage cabinet temperature control system may also include a battery heat exchange device 3 for exchanging heat with the battery pack of the energy storage cabinet. The evaporator 2-1 of the aforementioned compression refrigeration system 2 includes a refrigerant passage and a liquid cooling passage that can exchange heat with each other. The refrigerant passage connects the compressor 2-2 and the condenser 2-3 to form a compression refrigeration cycle system, wherein the condenser 2-3 is generally used to dissipate heat from the outside of the energy storage cabinet.

[0052] The battery heat exchange device 3, heat dissipation device 1, and liquid cooling channel are connected to the main liquid cooling system 5. In order to ensure fluid circulation, a main circulation pump 5-1 is usually provided to drive fluid circulation.

[0053] As attached Figure 1 As shown, the battery heat exchange device 3 and the heat dissipation device 1 can be connected in parallel to ensure that the heat from the battery heat exchange device 3 and the heat dissipation device 1 does not affect each other. Alternatively, it can be configured as shown in the attached figure. Figure 2-8 As shown, the heat dissipation device 1 is connected to the bypass channel of the main liquid cooling system 5 so that heat exchange device 3 and heat dissipation device 1 can generate heat interaction, making it convenient to utilize the different heat dissipation needs of heat exchange device 3 and heat dissipation device 1.

[0054] The battery heat exchanger 3, the heat dissipation device 1, and the liquid cooling channel are connected to the main liquid cooling system 5. Generally, the battery heat exchanger 3 and the heat dissipation device 1 are equipped with inlet and outlet liquid ports to connect to the main liquid cooling system 5. For easy distinction, the inlet and outlet liquid ports of the battery heat exchanger 3 are heat exchange inlet 3-1 and heat exchange outlet 3-2, respectively, while the inlet and outlet liquid ports of the heat dissipation device 1 are heat dissipation inlet 1-3 and heat dissipation outlet 1-4, respectively.

[0055] The battery heat exchanger 3 needs to correspond to the battery pack, while the heat dissipation device 1 needs to correspond to the PCS. Therefore, the battery heat exchanger 3 is generally equipped with supply and return liquid ports to connect to the liquid cooling structure corresponding to the battery pack, such as the battery pack liquid cooling plate 3-5 or the immersion liquid cooling tank. The heat dissipation device 1 is also equipped with supply and return liquid ports to connect to the liquid cooling structure corresponding to the PCS, such as the PCS liquid cooling plate 1-11 or the aforementioned dry cooler 1-2. For easy distinction, the supply and return liquid ports of the battery heat exchanger 3 are heat exchange supply port 3-3 and heat exchange return port 3-4, while the supply and return liquid ports of the heat dissipation device 1 are heat dissipation supply port 1-5 and heat dissipation return port 1-6.

[0056] In some embodiments, the heat dissipation supply port 1-5 and the heat dissipation return port 1-6 are respectively connected to both ends of the PCS liquid cooling plate 1-11 or to both ends of the dry cooler 1-2 used for air cooling of the PCS. Specifically, as shown in the attached figure. Figure 2 , 3 As shown in Figures 7 and 8, the heat dissipation supply port 1-5 and the heat dissipation return port 1-6 are respectively connected to both ends of the PCS liquid cooling plate 1-11. (See attached figure.) Figure 1 , 4 As shown in Figures 1 and 6, the heat dissipation liquid supply port 1-5 and the heat dissipation liquid return port 1-6 are respectively connected to the two ends of the dry cooler 1-2.

[0057] In some embodiments, the heat exchange inlet 3-1 and the heat exchange outlet 3-2 are connected one-to-one with the heat exchange supply outlet 3-3 and the heat exchange return outlet 3-4, or heat exchange is achieved through a heat exchanger.

[0058] In some embodiments, the heat dissipation inlet 1-3 and the heat dissipation outlet 1-4 are connected one-to-one with the heat dissipation supply outlet 1-5 and the heat dissipation return outlet 1-6, or heat exchange is achieved through an intermediate heat exchanger 1-7.

[0059] As shown in the appendix Figure 1 , 2 As shown in Figures 4, 5, 7, and 8, the heat dissipation inlet 1-3 is connected to the heat dissipation supply inlet 1-5, while the heat dissipation return inlet 1-6 is connected to the heat dissipation outlet 1-4. This allows the heat dissipation inlet 1-3 to supply heat exchange fluid to the heat dissipation supply inlet 1-5. After heat exchange through the aforementioned PCS liquid cooling plate 1-11 or the aforementioned dry cooler 1-2, the heat exchange fluid flows out from the heat dissipation return inlet 1-6 and then flows back to the main circuit of the main liquid cooling system 5 through the heat dissipation outlet 1-4.

[0060] As shown in the appendix Figure 3 , 6 As shown, an intermediate heat exchanger 1-7 is provided. The intermediate heat exchanger 1-7 includes two heat exchange channels that exchange heat with each other. One heat exchange channel is connected between the heat dissipation inlet 1-3 and the heat dissipation outlet 1-4, and the other heat exchange channel is connected between the heat dissipation supply port 1-5 and the heat dissipation return port 1-6.

[0061] In some embodiments, as shown in the appendix Figure 2 , 3 As shown, the heat dissipation device 1 can also include a circulation channel 1-8, with both ends of the circulation channel 1-8 connected to the heat dissipation liquid supply port 1-5 and the heat dissipation liquid return port 1-6 respectively, to form a circulation channel. Of course, an auxiliary circulation pump 1-12 also needs to be installed in the circulation channel 1-8 to ensure the circulation flow within the channel. Through the above configuration, the temperature of the heat dissipation liquid supply port 1-5 can be changed via the circulation channel 1-8, preventing the temperature of the heat dissipation liquid supply port 1-5 from becoming too low.

[0062] As attached Figure 2 As shown, the heat dissipation inlet 1-3 and heat dissipation outlet 1-4 are connected one-to-one with the heat dissipation supply port 1-5 and heat dissipation return port 1-6. At this time, it is equivalent to that part of the fluid from the heat dissipation supply port 1-5 comes from the heat dissipation return port 1-6 through the circulation channel 1-8, and the other part comes from the heat dissipation inlet 1-3. After mixing, the temperature of the heat exchange fluid is reduced (the mixing ratio can be adjusted according to the required temperature). Then, after dissipating heat for the PCS, the temperature is increased and flows out from the heat dissipation return port 1-6. At this time, part of the fluid from the heat dissipation return port 1-6 (corresponding to the fluid flow rate of the heat dissipation inlet 1-3) is diverted to the heat dissipation outlet 1-4 to return to the main circuit of the main liquid cooling system 5.

[0063] As attached Figure 3 Intermediate heat exchangers 1-7 are provided. It should be noted that the heat exchange channel connecting the heat dissipation supply port 1-5 and the heat dissipation return port 1-6 is connected in series or in parallel with the circulation channel 1-8. (See attached...) Figure 3 The middle section is set to parallel connection.

[0064] By using circulating channels 1-8, the structure can be simplified and the temperature of the heat dissipation supply ports 1-5 can be prevented from being too low.

[0065] In some embodiments, as shown in the appendix Figure 4 , 5 As shown in Figure 6, the heat dissipation device 1 also includes an external radiator 1-9. The two ends of the external radiator 1-9 are connected to the heat dissipation supply port 1-5 and the heat dissipation return port 1-6 respectively, forming a circulation channel. This allows heat to be dissipated from the heat dissipation device through the external radiator 1-9. For example, the fluid in the heat dissipation return port 1-6, after passing through the external radiator 1-9 and cooling down, returns to the heat dissipation supply port 1-5. When the outdoor ambient temperature is low, heat dissipation can be directly achieved through the external radiator 1-9. When the outdoor ambient temperature is high, a regulating valve can be installed to allow simultaneous heat dissipation from both the external radiator 1-9 and the main liquid cooling system 5. Alternatively, a switching valve can be installed to select either the external radiator 1-9 or the main liquid cooling system 5 for heat dissipation, depending on the needs. The external radiator 1-9 is generally a dry-cooled radiator.

[0066] As attached Figure 4 , 5 As shown, the heat dissipation inlet 1-3 and heat dissipation outlet 1-4 are connected one-to-one with the heat dissipation supply port 1-5 and heat dissipation return port 1-6. This means that the fluid supplied by the heat dissipation supply port 1-5 can originate from the heat dissipation inlet 1-3 and / or the external radiator 1-9. After dissipating heat from the PCS and increasing its temperature, the fluid flows out from the heat dissipation return port 1-6. At this time, the fluid in the corresponding heat dissipation return port 1-6 flows towards the heat dissipation outlet 1-4 and / or the external radiator 1-9. (The attached text is incomplete and requires further context.) Figure 4 For dry coolers 1-2.

[0067] As attached Figure 6 Intermediate heat exchangers 1-7 are installed. It should be noted that the heat exchange channel connecting the heat supply port 1-5 and the heat return port 1-6 is connected in series or parallel with the external radiators 1-9. (See attached...) Figure 6 The middle section is set to parallel connection.

[0068] By using the external heat sinks 1-9, the low outdoor temperature environment can be better utilized, reducing overall power consumption.

[0069] In some embodiments, as shown in the appendix Figure 2 , 3 As shown in Figures 4, 5, 6, and 8, the heat dissipation outlet 1-4 and heat dissipation inlet 1-3 of the heat dissipation device 1 can be connected between the heat exchange outlet 3-2 of the battery heat exchange device 3 and the inlet of the liquid cooling channel, respectively. At this time, the remaining cooling capacity of the battery pack can be used to increase the inlet temperature of the liquid cooling channel.

[0070] Of course, it can also be as shown in the appendix. Figure 7 As shown, the heat dissipation outlet 1-4 and heat dissipation inlet 1-3 of the heat dissipation device 1 are respectively connected between the liquid cooling channel outlet and the heat exchange inlet 3-1 of the battery heat exchange device 3, which can prevent the temperature of the heat exchange inlet 3-1 from being too high.

[0071] At this time, the heat dissipation inlet 1-3 is connected to the outlet end of the main circulation pump 5-1, and the heat dissipation outlet 1-4 is connected to the inlet end of the main circulation pump 5-1. At this time, the hydraulic pressure difference between the two ends of the main circulation pump 5-1 can be used to cause the fluid entering through the heat dissipation inlet 1-3 to flow to the heat dissipation outlet 1-4.

[0072] When the heat dissipation inlet 1-3 is connected to the outlet end of the main circulation pump 5-1 and the heat dissipation outlet 1-4 is connected to the inlet end of the main circulation pump 5-1, a flow regulating valve 1-10 can be further set to regulate the flow rate of the heat dissipation inlet 1-3, thereby regulating the heat dissipation power and changing the flow rate of the fluid diverted from the outlet end of the main circulation pump 5-1 to the heat dissipation inlet 1-3.

[0073] Furthermore, the main liquid cooling system 5 is also equipped with an electric heating device 5-2, which connects the heat dissipation outlet 1-4 and heat dissipation inlet 1-3 of the heat dissipation device 1 between the inlet end of the electric heating device 5-2 and the heat exchange outlet 3-2, respectively.

[0074] In some embodiments, a dehumidifying coil 4 may also be provided, wherein the dehumidifying coil 4 is connected to the main liquid cooling system 5 and may be connected in parallel or in series with the heat dissipation device 1. To ensure the dehumidification effect, the dehumidifying coil 4 may be connected in parallel with the refrigerant channel.

[0075] In some embodiments, a closed chamber can be provided to accommodate the PCS for better heat dissipation. In this case, the aforementioned dry cooler 1-2 is disposed within this closed chamber, and the corresponding heat dissipation device 1 further includes a ventilation device 1-1 for directing the airflow from the PCS outlet through the dry cooler 1-2 and back to the PCS inlet. By employing the evaporator 2-1 of the compression refrigeration system 2 to dissipate heat from the closed chamber, heat dissipation of the PCS is achieved. Compared to an open design, this avoids excessive noise from the internal ventilation device 1-1. Furthermore, the closed design better protects the PCS.

[0076] Correspondingly, the dry cooler 1-2 can be tilted, and a water collection tray can be provided at the bottom of the dry cooler 1-2; furthermore, the compressor 2-2 is located in a closed chamber and arranged in the air path of the ventilation device 1-1 to facilitate heat dissipation. In order to avoid the PCS air inlet temperature being too low, the dry cooler 1-2 can be located at the PCS air outlet.

[0077] By implementing the above comprehensive settings, the impact of excessively low temperatures in the dry cooler 1-2 caused by the evaporator 2-1 on the heat dissipation of the PCS can be effectively reduced.

[0078] Based on the energy storage cabinet temperature control system provided in the above embodiments, this utility model also provides an energy storage cabinet, which includes any one of the energy storage cabinet temperature control systems in the above embodiments, and also includes a PCS, wherein the heat dissipation device 1 in the energy storage cabinet temperature control system dissipates heat from the PCS. Since this energy storage cabinet adopts the energy storage cabinet temperature control system in the above embodiments, the beneficial effects of this energy storage cabinet can be found in the above embodiments.

[0079] Of course, the energy storage cabinet also includes the battery pack, as well as the battery heat exchange device 3 for dissipating heat from the battery pack.

[0080] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0081] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A temperature control system for an energy storage cabinet, characterized in that, include: Heat dissipation device (1) is used to dissipate heat from the PCS of the energy storage cabinet; The compression refrigeration system (2) includes an evaporator (2-1), a compressor (2-2), and a condenser (2-3) that are connected in a cycle; when the compression refrigeration system (2) is running, the evaporator (2-1) can dissipate heat from the PCS through the heat dissipation device (1).

2. The energy storage cabinet temperature control system according to claim 1, characterized in that, The heat dissipation device (1) includes a ventilation device (1-1) for ventilating the PCS, and the evaporator (2-1) is capable of dissipating heat from the airflow generated by the ventilation device (1-1).

3. The energy storage cabinet temperature control system according to claim 1, characterized in that, The heat dissipation device (1) includes a dry cooler (1-2) for air cooling of the PCS, and the evaporator (2-1) is capable of dissipating heat from the fluid flowing in the dry cooler (1-2).

4. The energy storage cabinet temperature control system according to claim 3, characterized in that, The device is provided with a closed chamber for accommodating the PCS. The dry cooler (1-2) is located in the closed chamber. The heat dissipation device (1) also includes a ventilation device (1-1) for directing the airflow from the PCS outlet through the dry cooler (1-2) back to the PCS inlet.

5. The energy storage cabinet temperature control system according to claim 4, characterized in that, The dry cooler (1-2) is inclined and a water receiving tray is provided at the bottom of the dry cooler (1-2); the compressor (2-2) is located in a closed chamber and is arranged on the air path of the ventilation device (1-1).

6. The energy storage cabinet temperature control system according to any one of claims 1-5, characterized in that, It also includes a battery heat exchange device (3) for exchanging heat with the battery pack of the energy storage cabinet; the evaporator (2-1) includes a refrigerant channel and a liquid cooling channel that can exchange heat with each other, the refrigerant channel is connected between the compressor (2-2) and the condenser (2-3), and the battery heat exchange device (3), the heat dissipation device (1) and the liquid cooling channel are connected to the main liquid cooling system (5).

7. The energy storage cabinet temperature control system according to claim 6, characterized in that, The battery heat exchange device (3) and the heat dissipation device (1) are connected in parallel in the main liquid cooling system (5).

8. The energy storage cabinet temperature control system according to claim 6, characterized in that, The heat dissipation device (1) further includes a heat dissipation inlet (1-3), a heat dissipation outlet (1-4), a heat dissipation supply outlet (1-5), and a heat dissipation return outlet (1-6); the heat dissipation supply outlet (1-5) and the heat dissipation return outlet (1-6) are respectively connected to both ends of the PCS liquid cooling plate (1-11) or to both ends of the dry cooler (1-2) used for air cooling of the PCS; the heat dissipation inlet (1-3) and the heat dissipation outlet (1-4) are connected to the main liquid cooling system (5); the heat dissipation inlet (1-3) and the heat dissipation outlet (1-4) are connected one-to-one with the heat dissipation supply outlet (1-5) and the heat dissipation return outlet (1-6) or heat exchange is achieved through an intermediate heat exchanger (1-7).

9. The energy storage cabinet temperature control system according to claim 8, characterized in that, The heat dissipation device (1) further includes a circulation channel (1-8), the two ends of which are connected to the heat dissipation liquid supply port (1-5) and the heat dissipation liquid return port (1-6) respectively to form a circulation channel; and / or, the heat dissipation device (1) further includes an external radiator (1-9), the two ends of which are connected to the heat dissipation liquid supply port (1-5) and the heat dissipation liquid return port (1-6) respectively to form a circulation channel.

10. The energy storage cabinet temperature control system according to claim 6, characterized in that, It also includes flow regulating valves (1-10); the main liquid cooling system (5) includes a main circulation pump (5-1) for driving fluid circulation. The heat dissipation outlet (1-4) and heat dissipation inlet (1-3) of the heat dissipation device (1) are respectively connected between the heat exchange outlet (3-2) of the battery heat exchange device (3) and the inlet of the liquid cooling channel or between the liquid cooling channel outlet and the heat exchange inlet (3-1) of the battery heat exchange device (3). The heat dissipation inlet (1-3) is connected to the outlet end of the main circulation pump (5-1), and the heat dissipation outlet (1-4) is connected to the inlet end of the main circulation pump (5-1). The flow regulating valve (1-10) is used to regulate the flow rate of the heat dissipation inlet (1-3) of the heat dissipation device (1).

11. The energy storage cabinet temperature control system according to claim 6, characterized in that, It also includes a dehumidification coil (4), which is connected to the main liquid cooling system (5) or is set in parallel with the refrigerant channel.

12. An energy storage cabinet, comprising PCS, characterized in that, It also includes the energy storage cabinet temperature control system as described in any one of claims 1-11; the heat dissipation device (1) in the energy storage cabinet temperature control system dissipates heat from the PCS.

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