Energy storage temperature control system and energy storage cabinet

Abstract

The utility model discloses a kind of energy storage temperature control system and energy storage cabinet, it is related to energy storage cabinet technical field, wherein, energy storage temperature control system, comprising: first thermal cycle system;Second thermal cycle system;Wherein, heat exchange assembly is arranged between the first thermal cycle system with the second thermal cycle system, for the heat exchange between first thermal cycle system and second thermal cycle system;The energy storage temperature control system and energy storage cabinet provide two independent thermal cycle systems, respectively cooling battery module and PCS module, realize the individual temperature control of two modules, and part of the cold of first thermal cycle system is supplemented to second thermal cycle system, to reduce the fan load of air-cooled heat exchange assembly in second thermal cycle system, and then reduce fan volume and noise, while improve the cold utilization of first thermal cycle system, reduce the overall energy consumption of equipment.

Description

Technical Field

[0001] This utility model relates to the field of energy storage cabinet technology, and more specifically, to an energy storage temperature control system. Furthermore, this utility model also relates to an energy storage cabinet including the aforementioned energy storage temperature control system. Background Technology

[0002] The existing energy storage cabinets mainly include battery modules and PCS (Power Conversion System) modules. The high-efficiency operating temperature range of the battery module is 10-35℃, while that of the PCS module is 40-50℃. There is a difference in the high-efficiency operating temperature range between the two, and both have thermal management requirements. In the existing technology, two sets of parallel heat exchange components are often used to control the temperature of the battery module and the PCS module respectively.

[0003] In the process of developing this application, the applicant discovered that the prior art has at least the following problems:

[0004] If air cooling is used to cool the PCS module alone, the load on the fan will be large, resulting in an increase in the size and noise of the fan.

[0005] In summary, how to solve the problem of excessive fan load in the heat dissipation components of PCS modules, which leads to increased fan size and noise, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an energy storage temperature control system, which provides two independent thermal circulation systems to cool the battery module and the PCS module respectively, so as to realize the individual temperature control of the two modules. In addition, part of the cooling capacity of the first thermal circulation system is supplemented to the second thermal circulation system to reduce the fan load of the air-cooled heat exchange component in the second thermal circulation system, thereby reducing the fan size and noise, while improving the cooling capacity utilization rate of the first thermal circulation system and reducing the overall energy consumption of the equipment.

[0007] Another objective of this utility model is to provide an energy storage cabinet that includes the above-mentioned energy storage temperature control system, which has the same technical solution and can solve the same technical problem.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An energy storage temperature control system is used for heat dissipation of battery modules and PCS modules inside an energy storage cabinet. The energy storage temperature control system includes:

[0010] The first thermal circulation system includes an inlet channel and an outlet channel. The inlet channel is used to connect the inlet of the heat exchange component of the battery module, and the outlet channel is used to connect the outlet of the heat exchange component of the battery module. A first circulation pump is connected in series in the inlet channel and / or the outlet channel.

[0011] The second thermal circulation system includes a second circulation pump and a first air-cooled heat exchange component connected in series. The inlet and outlet of the second thermal circulation system are respectively connected to the outlet and inlet of the heat exchange component of the PCS module.

[0012] A heat exchange component is provided between the first thermal cycle system and the second thermal cycle system for heat exchange between the two systems.

[0013] Preferably, the heat exchange component includes an inlet manifold and a return manifold;

[0014] The inlet manifold connects the outlet of the first circulating pump and the outlet of the second thermal circulation system.

[0015] The return manifold is connected to the inlet of the second thermal circulation system and the inlet of the first circulation pump.

[0016] A first regulating valve is connected in series in the inlet manifold or the return manifold.

[0017] Preferably, the heat exchange assembly includes an auxiliary heat exchanger;

[0018] The inlet of the first channel of the auxiliary heat exchanger is connected to the outlet of the first circulating pump, the outlet of the first channel of the auxiliary heat exchanger is connected to the inlet of the first circulating pump, and a first regulating valve is connected in series between the auxiliary heat exchanger and the first circulating pump.

[0019] The liquid inlet of the second channel of the auxiliary heat exchanger is connected to the liquid inlet of the second thermal circulation system, and the liquid outlet of the second channel of the auxiliary heat exchanger is connected to the liquid outlet of the second thermal circulation system.

[0020] Preferably, a first control valve is connected in series within the first thermal cycle system;

[0021] The heat exchange assembly includes an inlet manifold and a return manifold;

[0022] The inlet manifold is connected to the inlet of the first control valve and the outlet of the second thermal circulation system.

[0023] The return manifold connects the inlet of the second thermal circulation system and the outlet of the first control valve.

[0024] Preferably, a first control valve is connected in series within the first thermal cycle system;

[0025] The heat exchange assembly includes an auxiliary heat exchanger;

[0026] The liquid inlet of the first channel of the auxiliary heat exchanger is connected to the liquid inlet of the first control valve, and the liquid outlet of the first channel of the auxiliary heat exchanger is connected to the liquid outlet of the first control valve.

[0027] The liquid inlet of the second channel of the auxiliary heat exchanger is connected to the liquid inlet of the second thermal circulation system, and the liquid outlet of the second channel of the auxiliary heat exchanger is connected to the liquid outlet of the second thermal circulation system.

[0028] Preferably, a pressure tank is connected in series within the heat exchange assembly.

[0029] Preferably, a second regulating valve is connected in series in the branch where the auxiliary heat exchanger and / or the first air-cooled heat exchange component is located.

[0030] Preferably, a cold and heat source circulation system is connected in series between the liquid inlet channel and the liquid outlet channel;

[0031] or,

[0032] A main heat exchanger is connected in series between the liquid inlet channel and the liquid outlet channel, and the other channel of the main heat exchanger is connected in series with the cold and heat source circulation system.

[0033] Preferably, an evaporator is connected in series in the low-temperature channel of the cold and heat source circulation system.

[0034] An energy storage cabinet includes the energy storage temperature control system described in any one of the above claims. The energy storage cabinet includes two independent compartments for placing the battery module and the PCS module, respectively. The first thermal circulation system and the second thermal circulation system are used for temperature control of the two independent compartments, respectively.

[0035] The energy storage temperature control system provided by this utility model has at least the following advantages compared with the prior art:

[0036] 1. The first and second thermal circulation systems can operate independently. When the heat generation of the PCS module is low, the second thermal circulation system corresponding to the PCS module can be directly cooled by air cooling. The cooling capacity in the first thermal circulation system can be used entirely for cooling the battery module, solving the problem of wasted cooling capacity caused by the equal liquid inlet temperature of the heat exchange components of the battery module and the PCS module, thereby reducing the overall energy consumption of the equipment.

[0037] 2. The first and second thermal circulation systems can operate in combination. That is, when the heat generated by the PCS module increases and air cooling alone is insufficient to meet the cooling requirements of the PCS module, some of the cooling capacity in the first thermal circulation system can be used as supplementary cooling capacity for the second thermal circulation system, thereby improving the cooling effect of the PCS module, further improving the utilization rate of cooling capacity, reducing the overall energy consumption of the equipment, and since cooling capacity can be supplemented from the first thermal circulation system to the second thermal circulation system, the fan load of the air-cooled heat exchange components in the second thermal circulation system can be reduced, thereby reducing the size and noise of the fan.

[0038] This utility model provides an energy storage cabinet, which includes the above-mentioned energy storage temperature control system and has the same beneficial effects. Attached Figure Description

[0039] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of a specific embodiment two provided by this utility model;

[0042] Figure 3 This is a structural schematic diagram of a specific embodiment three provided by this utility model;

[0043] Figure 4 This is a structural schematic diagram of the fourth specific embodiment of the present invention;

[0044] Figure 5 This is a structural schematic diagram of the fifth specific embodiment provided by this utility model;

[0045] Figure 6 This is a structural schematic diagram of a specific embodiment six provided by this utility model;

[0046] Figure 7 This is a structural schematic diagram of the specific embodiment seven provided by this utility model;

[0047] Figure 8 This is a schematic diagram of the structure of specific embodiment eight provided by this utility model;

[0048] Figure 9 This is a structural schematic diagram of specific embodiment nine provided by this utility model;

[0049] Figure 10 This is a structural schematic diagram of specific embodiment ten provided by this utility model;

[0050] Figure 11 This is a structural schematic diagram of the eleventh specific embodiment provided by this utility model.

[0051] Figures 1-11 middle:

[0052] 1. Cold and heat source circulation system; 11. Compressor; 12. Condenser; 13. Expansion valve; 14. Main heat exchanger; 15. Evaporator;

[0053] 2. First thermal circulation system; 21. First circulation pump; 22. Temperature sensor; 23. Pressure sensor; 24. Check valve;

[0054] 3. Second heat circulation system; 31. Second circulation pump; 32. First air-cooled heat exchanger assembly; 33. Second air-cooled heat exchanger assembly; 34. Liquid-cooled heat exchanger assembly; 35. Pressure tank;

[0055] 4. First regulating valve;

[0056] 5. Auxiliary heat exchanger;

[0057] 6. Second control valve.

[0058] Solid arrows indicate the direction of airflow for air cooling;

[0059] The hollow arrows indicate the direction of refrigerant flow. Detailed Implementation

[0060] 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.

[0061] The core of this utility model is to provide an energy storage temperature control system, which provides two independent thermal circulation systems to cool the battery module and the PCS module respectively, so as to achieve individual temperature control of the two modules. It can also supplement part of the cooling capacity of the first thermal circulation system to the second thermal circulation system, thereby reducing the fan load of the air-cooled heat exchange components in the second thermal circulation system, thereby reducing the fan size and noise, while improving the cooling capacity utilization rate of the first thermal circulation system and reducing the overall energy consumption of the equipment.

[0062] Another core aspect of this utility model is to provide an energy storage cabinet that includes the above-mentioned energy storage temperature control system, which has the same technical solution and can solve the same technical problems.

[0063] Please refer to Figure 1 An energy storage temperature control system for heat dissipation of battery modules and PCS modules within an energy storage cabinet, the energy storage temperature control system comprising:

[0064] The first thermal circulation system 2 includes an inlet channel and an outlet channel. The inlet channel is used to connect the inlet of the heat exchange component of the battery module, and the outlet channel is used to connect the outlet of the heat exchange component of the battery module. A first circulation pump 21 is connected in series in the inlet channel and / or the outlet channel.

[0065] The second thermal circulation system 3 includes a second circulation pump 31 and a first air-cooled heat exchange component 32 connected in series. The inlet and outlet of the second thermal circulation system 3 are respectively connected to the outlet and inlet of the heat exchange component of the PCS module.

[0066] A heat exchange component is provided between the first heat cycle system 2 and the second heat cycle system 3 for heat exchange between the first heat cycle system 2 and the second heat cycle system 3.

[0067] like Figure 1 As shown, the first thermal cycle system 2 is used to cool the battery module, and the second thermal cycle system 3 is used to cool the PCS module. The first thermal cycle system 2 and the second thermal cycle system 3 can operate independently, thereby inputting refrigerant at different temperatures for the battery module and the PCS module to solve the problem that the battery module and the PCS module have different high-efficiency operating temperature ranges.

[0068] Meanwhile, the first thermal cycle system 2 and the second thermal cycle system 3 can also supplement the cooling capacity of the first thermal cycle system 2 to the second thermal cycle system 3 upstream of the heat exchange component of the PCS module through the heat exchange component. That is, the cooling capacity that has not been consumed after passing through the heat exchange component of the battery module is applied to the heat exchange component of the PCS module again, thereby improving the utilization rate of cooling capacity and solving the problem of high temperature of the PCS module.

[0069] like Figure 9 As shown, when the first thermal cycle system 2 is connected in series with a common cold source system for providing low-temperature cold source, such as when multiple energy storage cabinets share a common cold source system of mechanical refrigeration, the first thermal cycle system 2 in the multiple energy storage cabinets is connected in parallel to the common cold source system; the liquid inlet channel of the first thermal cycle system 2 is connected to the liquid outlet of the common cold source system, and the liquid outlet of the first thermal cycle system 2 is connected to the liquid return port of the common cold source system, so that the common cold source system continuously provides low-temperature refrigerant to the first thermal cycle system 2 and returns the high-temperature refrigerant generated by the first thermal cycle system 2.

[0070] When the required temperature difference for cooling the PCS module is small, the second thermal circulation system 3 works independently. The refrigerant circulates within the second thermal circulation system 3 under the action of the second circulation pump 31. When it passes through the first air-cooled heat exchange component 32, the temperature of the refrigerant is reduced through air-cooled heat exchange. Subsequently, when the low-temperature refrigerant passes through the heat exchange component corresponding to the PCS module connected between the inlet and outlet of the second thermal circulation system 3, it absorbs the heat generated by the PCS module, thereby achieving the cooling of the PCS module through heat transfer.

[0071] When the temperature difference required for cooling of the PCS module is large, the cooling capacity of the first air-cooled heat exchange component 32 alone is insufficient to meet the heat dissipation requirements of the PCS module. The heat exchange component transfers part of the cooling capacity or low-temperature refrigerant in the first thermal cycle system 2 to the second thermal cycle system 3 to make up for the insufficient cooling capacity of the first air-cooled heat exchange component 32.

[0072] like Figures 1-8 As shown, when the heat exchange component is downstream of the heat exchange component of the battery module, the exchanged cooling capacity or low-temperature refrigerant is the same as the cooling capacity or low-temperature refrigerant after heat exchange in the battery module. Therefore, the initial temperature of the refrigerant in the heat exchange component of the PCS module is still higher than that in the heat exchange component of the battery module. This meets the requirement that the high-efficiency operating temperature of the PCS module is higher than that of the battery module. At the same time, it enables the secondary utilization of the refrigerant, improves the utilization rate of the refrigerant, and thus reduces the overall energy consumption of the system.

[0073] In some embodiments, the first circulating pump 21 is connected in series with the liquid outlet channel;

[0074] The heat exchange assembly includes an inlet manifold and a return manifold;

[0075] The inlet manifold is connected to the outlet of the first circulation pump 21 and the outlet of the second thermal circulation system 3;

[0076] The return manifold is connected to the inlet of the second thermal circulation system 3 and the inlet of the first circulation pump 21;

[0077] A first regulating valve 4 is connected in series in the inlet manifold or the return manifold.

[0078] like Figure 1 and Figure 5 As shown, the low-temperature refrigerant exchange between the first thermal cycle system 2 and the second thermal cycle system 3 is carried out through the liquid inlet manifold and the liquid return manifold, and the flow resistance during the low-temperature refrigerant exchange between the first thermal cycle system 2 and the second thermal cycle system 3 is adjusted by connecting the first regulating valve 4 in series in the liquid inlet manifold or the liquid return manifold.

[0079] When the second heat cycle system 3 needs to run independently, the exchange flow resistance of the low-temperature refrigerant between the two sets of cycle systems is increased, that is, the flow path of the first control valve 4 is reduced or closed, so that all the refrigerant in the first heat cycle system 2 passes through the common cold source system to exchange low-temperature refrigerant.

[0080] When the first thermal cycle system 2 and the second thermal cycle system 3 need to exchange refrigerant to make up for the insufficient cooling capacity of the first air-cooled heat exchange component 32, the flow resistance of the low-temperature refrigerant exchange between the two sets of cycle systems is reduced, that is, the flow path of the first regulating valve 4 is increased, so that part of the refrigerant in the first thermal cycle system 2 exchanges with the refrigerant in the second thermal cycle system 3 through the liquid inlet manifold and the liquid return manifold, so as to increase the cooling capacity in the second thermal cycle system 3.

[0081] Among them, such as Figure 1 As shown, the second air-cooled heat exchange component 33 is used as the heat exchange component of the PCS module, and the PCS module is cooled by air cooling.

[0082] Or, such as Figure 5 As shown, a port connection is used, and a liquid-cooled heat exchange component 34 is used as the heat exchange component of the PCS module. It is directly connected in series in the second thermal cycle system 3, and the PCS module is cooled directly by liquid cooling.

[0083] In some embodiments, the first circulating pump 21 is connected in series with the liquid outlet channel;

[0084] The heat exchange components include an auxiliary heat exchanger 5;

[0085] The liquid inlet of the first channel of the auxiliary heat exchanger 5 is connected to the liquid outlet of the first circulating pump 21, the liquid outlet of the first channel of the auxiliary heat exchanger 5 is connected to the liquid inlet of the first circulating pump 21, and a first regulating valve 4 is connected in series between the auxiliary heat exchanger 5 and the first circulating pump 21.

[0086] The liquid inlet of the second channel of the auxiliary heat exchanger 5 is connected to the liquid inlet of the second thermal circulation system 3, and the liquid outlet of the second channel of the auxiliary heat exchanger 5 is connected to the liquid outlet of the second thermal circulation system 3.

[0087] like Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, heat exchange is performed between the first thermal cycle system 2 and the second thermal cycle system 3 through the auxiliary heat exchanger 5. At the same time, the flow resistance of the first channel of the auxiliary heat exchanger 5 is adjusted by connecting the first regulating valve 4 in series between the auxiliary heat exchanger 5 and the first circulating pump 21. When heat exchange between the two thermal cycle systems is required, the flow resistance of the first channel of the auxiliary heat exchanger 5 is reduced, that is, the flow diameter of the first regulating valve 4 is increased. When heat exchange between the two thermal cycle systems is not required, the flow resistance of the first channel of the auxiliary heat exchanger 5 is increased, that is, the flow diameter of the first regulating valve 4 is decreased.

[0088] like Figures 1-11 As shown, by adjusting the flow resistance of the heat exchange component, the amount of refrigerant distributed to the heat exchange component is adjusted, that is, the amount of cooling or refrigerant exchanged between the first heat cycle system 2 and the second heat cycle system 3 is adjusted.

[0089] In some embodiments, such as Figure 10 As shown, the first circulation pump 21 is connected in series with the liquid inlet channel, and the liquid inlet and liquid outlet of the heat exchange component are respectively set at both ends of the first circulation pump 21, which can also achieve the above-mentioned effect.

[0090] However, when the first circulation pump 21 is set in the liquid inlet channel, the refrigerant temperature passing through the heat exchange component will be lower than the refrigerant temperature passing through the battery module heat exchange component, which helps to improve the cooling effect of the PCS module.

[0091] When the first circulation pump 21 is set in the liquid outlet channel, the temperature of the refrigerant passing through the heat exchange component of the battery module will be lower than the temperature of the refrigerant passing through the heat exchange component, thereby allowing the cooling capacity in the first thermal circulation system 2 to be preferentially applied to the battery module, which helps to improve the cooling effect of the battery module.

[0092] In some embodiments, a first regulating valve 4 is connected in series in the liquid outlet channel;

[0093] The heat exchange assembly includes an inlet manifold and a return manifold;

[0094] The inlet manifold is connected to the inlet of the first regulating valve 4 and the outlet of the second thermal circulation system 3.

[0095] The return manifold connects the inlet of the second thermal circulation system 3 and the outlet of the first control valve 4.

[0096] like Figure 4 As shown, the refrigerant exchange between the first thermal cycle system 2 and the second thermal cycle system 3 is achieved by connecting the first regulating valve 4 in series in the liquid outlet channel and by using the liquid inlet manifold and the liquid return manifold.

[0097] Preferably, a first regulating valve 4 is connected in series in the liquid outlet channel;

[0098] The heat exchange components include an auxiliary heat exchanger 5;

[0099] The liquid inlet of the first channel of the auxiliary heat exchanger 5 is connected to the liquid inlet of the first regulating valve 4, and the liquid outlet of the first channel of the auxiliary heat exchanger 5 is connected to the liquid outlet of the first regulating valve 4.

[0100] The liquid inlet of the second channel of the auxiliary heat exchanger 5 is connected to the liquid inlet of the second thermal circulation system 3, and the liquid outlet of the second channel of the auxiliary heat exchanger 5 is connected to the liquid outlet of the second thermal circulation system 3.

[0101] like Figure 8 As shown, the refrigerant exchange between the first thermal cycle system 2 and the second thermal cycle system 3 is achieved by connecting the first regulating valve 4 in series in the liquid outlet channel and by using the auxiliary heat exchanger 5.

[0102] like Figure 4 and Figure 8 As shown, the heat exchange component is connected in parallel with the first control valve 4. By adjusting the flow resistance of the first control valve 4, the amount of refrigerant distributed to the heat exchange component is adjusted, that is, the amount of cooling or refrigerant exchanged between the first heat cycle system 2 and the second heat cycle system 3 is adjusted.

[0103] like Figure 11 As shown, in some embodiments, the first regulating valve 4 is connected in series with the liquid inlet channel, and the liquid inlet and liquid outlet of the heat exchange component are respectively set at both ends of the first regulating valve 4, which can also achieve the above-mentioned effect.

[0104] However, when the first regulating valve 4 is set in the liquid inlet channel, the refrigerant temperature passing through the heat exchange component will be lower than the refrigerant temperature passing through the battery module heat exchange component, which helps to improve the cooling effect of the PCS module.

[0105] When the first regulating valve 4 is set in the liquid outlet channel, the temperature of the refrigerant passing through the heat exchange component will be higher than the temperature of the refrigerant passing through the battery module heat exchange component, which helps to improve the cooling effect of the battery module.

[0106] In some embodiments, the heat exchange component is connected in parallel with the heat exchange component of the battery module. That is, the liquid inlet and liquid outlet of the heat exchange component are connected to the liquid inlet channel and the liquid outlet channel, respectively, and the first regulating valve 4 is connected in series in the heat exchange component to regulate the flow resistance of the heat exchange component, thereby changing the amount of refrigerant supplied to the second thermal cycle system 3.

[0107] In some embodiments, a pressure tank 35 is connected in series within the heat exchange assembly.

[0108] like Figures 1-11 As shown, in order to avoid liquid turbulence in the channel, a pressure tank 35 is connected in series in the heat exchange component to ensure the smooth circulation of the refrigerant.

[0109] In some embodiments, a second regulating valve 6 is connected in series in the branch where the auxiliary heat exchanger 5 and / or the first air-cooled heat exchange assembly 32 is located.

[0110] like Figure 2 and Figure 6 As shown, when the normal flow resistance of the second channel of the auxiliary heat exchanger 5 is greater than the flow resistance of the first air-cooled heat exchange component 32, the second regulating valve 6 is connected in series in the branch where the first air-cooled heat exchange component 32 is located.

[0111] Or, such as Figure 3 and Figure 7 As shown, when the normal flow resistance of the second channel of the auxiliary heat exchanger 5 is less than the flow resistance of the first air-cooled heat exchange component 32, the second control valve 6 is connected in series in the branch where the auxiliary heat exchanger 5 is located.

[0112] Alternatively, a second control valve 6 can be connected in series in the branch where the auxiliary heat exchanger 5 and the first air-cooled heat exchange component 32 are located, and the flow resistance difference between the two branches can be changed by adjusting the two sets of second control valves 6.

[0113] By changing the flow resistance difference between the two branches, more refrigerant can flow through the branch with lower flow resistance to achieve the corresponding cooling strategy. For example, if more refrigerant flows through the auxiliary heat exchanger 5, it will help increase the heat exchange between the first thermal cycle system 2 and the second thermal cycle system 3. If more refrigerant flows through the first air-cooled heat exchange component 32, it will help increase the cooling capacity of the first air-cooled heat exchange component 32.

[0114] In some embodiments, a cold and heat source circulation system 1 is connected in series between the liquid inlet channel and the liquid outlet channel;

[0115] or,

[0116] A main heat exchanger 14 is connected in series between the liquid inlet channel and the liquid outlet channel, and another channel of the main heat exchanger 14 is connected in series with a cold and heat source circulation system 1.

[0117] like Figures 1-8 and Figures 10-11 As shown, using a separately set cold and heat source circulation system 1 instead of a common cold source system to provide low-temperature refrigerant helps to directly integrate the cold and heat source circulation system 1 into the energy storage cabinet. At the same time, the cold and heat source circulation system 1 can be directly connected in series with the first heat cycle system 2, or the heat exchange between the cold and heat source circulation system 1 and the first heat cycle system 2 can be realized through the main heat exchanger 14 to provide low-temperature refrigerant for the first heat cycle system 2.

[0118] The cold and heat source circulation system 1 includes a compressor 11, a condenser 12 and an expansion valve 13 connected in series. In some embodiments, the compressor 11 is connected in series in the cold and heat source circulation system 1 through a four-way valve. That is, by switching the four-way valve, the flow direction of the refrigerant in the cold and heat source circulation system 1 is changed, so that the original condenser 12 is converted into an evaporator, thereby providing heat to the first heat circulation system 2 for the battery module to be heated.

[0119] In some embodiments, an evaporator 15 is connected in series in the low-temperature channel of the cold and heat source circulation system 1.

[0120] like Figures 1-8 As shown, an evaporator 15 is connected in series at the liquid inlet of the compressor 11 in the low-temperature channel of the cold and heat source circulation system 1. By taking advantage of the characteristic of the low-temperature refrigerant to heat up and absorb heat, the surface temperature of the evaporator 15 is reduced, and the moisture in the environment is condensed on the surface of the evaporator 15, thus achieving the purpose of dehumidification.

[0121] Specifically, by connecting the evaporator 15 in series between the main heat exchanger 14 and the compressor 11, compared to connecting the evaporator 15 in series within the first heat cycle system 2 or the second heat cycle system 3, the evaporator 15 can obtain a lower surface temperature, thereby increasing the condensation rate of moisture in the environment and thus improving the dehumidification effect.

[0122] like Figures 1-8 As shown, a one-way valve 24 is connected in series in the return or inlet channel of the first thermal circulation system 2 to ensure the correct flow of refrigerant in the first thermal circulation system 2. At the same time, a temperature sensor 22 and a pressure sensor 23 are installed at the connection position of the heat exchange component with the battery module in the first thermal circulation system 2 to monitor the refrigerant temperature and pressure at the inlet and outlet of the heat exchange component to ensure that the system works normally.

[0123] Similarly, temperature sensor 22 and pressure sensor 23 are installed at the heat exchange component level of the second thermal cycle system 3 and the PCS module to monitor the refrigerant temperature and pressure at the inlet and outlet of the heat exchange component to ensure that the system works normally.

[0124] In addition to the energy storage temperature control system disclosed in the above embodiments, this utility model also provides an energy storage cabinet including the above energy storage temperature control system. The energy storage cabinet includes two independent compartments for placing battery modules and PCS modules, respectively. The first thermal cycle system 2 and the second thermal cycle system 3 are respectively used for temperature control of the two independent compartments.

[0125] The battery module and the PCS module are cooled separately by two sets of thermal circulation systems. The PCS module can be cooled independently or by exchanging cold energy or low-temperature refrigerant between the two sets of thermal circulation systems, which solves the problem of insufficient cooling capacity of the first air-cooled heat exchange component 32 in the second thermal circulation system 3.

[0126] 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.

[0127] The energy storage temperature control system and energy storage cabinet provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An energy storage temperature control system for heat dissipation of battery modules and PCS modules in an energy storage cabinet, characterized in that, include: The first thermal circulation system (2) includes an inlet channel and an outlet channel. The inlet channel is used to connect the inlet of the heat exchange component of the battery module, and the outlet channel is used to connect the outlet of the heat exchange component of the battery module. A first circulation pump (21) is connected in series in the inlet channel and / or the outlet channel. The second thermal circulation system (3) includes a second circulation pump (31) and a first air-cooled heat exchange component (32) connected in series. The inlet and outlet of the second thermal circulation system (3) are respectively connected to the outlet and inlet of the heat exchange component of the PCS module. A heat exchange component is provided between the first heat cycle system (2) and the second heat cycle system (3) for heat exchange between the first heat cycle system (2) and the second heat cycle system (3).

2. The energy storage temperature control system of claim 1, wherein, The heat exchange assembly includes an inlet manifold and a return manifold; The inlet manifold is connected to the outlet of the first circulating pump (21) and the outlet of the second thermal circulation system (3); The return manifold is connected to the inlet of the second thermal circulation system (3) and the inlet of the first circulation pump (21); A first regulating valve (4) is connected in series in the inlet manifold or the return manifold.

3. The energy storage temperature control system of claim 1, wherein, The heat exchange assembly includes an auxiliary heat exchanger (5); the auxiliary heat exchanger (5) includes a first channel and a second channel capable of exchanging heat with each other. The inlet of the first channel of the auxiliary heat exchanger (5) is connected to the outlet of the first circulating pump (21), the outlet of the first channel of the auxiliary heat exchanger (5) is connected to the inlet of the first circulating pump (21), and a first regulating valve (4) is connected in series between the auxiliary heat exchanger (5) and the first circulating pump (21). The liquid inlet of the second channel of the auxiliary heat exchanger (5) is connected to the liquid inlet of the second thermal circulation system (3), and the liquid outlet of the second channel of the auxiliary heat exchanger (5) is connected to the liquid outlet of the second thermal circulation system (3).

4. The energy storage temperature control system of claim 1, wherein, The first control valve (4) is connected in series in the first thermal cycle system (2); The heat exchange assembly includes an inlet manifold and a return manifold; The inlet manifold is connected to the inlet of the first control valve (4) and the outlet of the second thermal circulation system (3); The return manifold is connected to the inlet of the second thermal circulation system (3) and the outlet of the first control valve (4).

5. The energy storage temperature control system of claim 1, wherein, The first control valve (4) is connected in series in the first thermal cycle system (2); The heat exchange assembly includes an auxiliary heat exchanger (5); the auxiliary heat exchanger (5) includes a first channel and a second channel capable of exchanging heat with each other. The liquid inlet of the first channel of the auxiliary heat exchanger (5) is connected to the liquid inlet of the first control valve (4), and the liquid outlet of the first channel of the auxiliary heat exchanger (5) is connected to the liquid outlet of the first control valve (4). The liquid inlet of the second channel of the auxiliary heat exchanger (5) is connected to the liquid inlet of the second thermal circulation system (3), and the liquid outlet of the second channel of the auxiliary heat exchanger (5) is connected to the liquid outlet of the second thermal circulation system (3).

6. The energy storage temperature control system of any of claims 1-5, wherein, A pressure tank (35) is connected in series within the heat exchange assembly.

7. The energy storage temperature control system of claim 3 or 5, wherein, A second regulating valve (6) is connected in series in the branch where the auxiliary heat exchanger (5) and / or the first air-cooled heat exchange component (32) are located.

8. The energy storage temperature control system of claim 1, wherein, A cold and heat source circulation system (1) is connected in series between the liquid inlet channel and the liquid outlet channel. or, A main heat exchanger (14) is connected in series between the liquid inlet channel and the liquid outlet channel, and the other channel of the main heat exchanger (14) is connected in series with the cold and heat source circulation system (1).

9. The energy storage temperature control system of claim 8, wherein, An evaporator (15) is connected in series in the low-temperature channel of the cold and heat source circulation system (1).

10. An energy storage cabinet characterized by, The energy storage temperature control system includes any one of claims 1-9, wherein the energy storage cabinet includes two independent compartments for placing the battery module and the PCS module, respectively, and the first thermal cycle system (2) and the second thermal cycle system (3) are respectively used for temperature control of the two independent compartments.

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