A temperature control system and control method for a battery swapping station

Abstract

This invention discloses a temperature control system and control method for a battery swapping station. The system includes a refrigerant circulation system, a charger module, an energy storage module, a battery compartment, and a fluid control element. The battery compartment is connected to both the refrigerant circulation system and the fluid control element, and is used to store battery packs. The charger module is connected to both the energy storage module and the refrigerant circulation system, and is used to charge the battery packs. The energy storage module stores hot water. The fluid control element is used to exchange heat between the energy storage module and the battery compartment. The fluid control element also forms a circulation loop between the energy storage module and the refrigerant circulation system, and exchanges heat with the battery compartment. Furthermore, the fluid control element is used to exchange heat between the charger module and the battery compartment. This invention can reduce energy consumption.

Description

Technical Field

[0001] This invention relates to the field of temperature control technology, and in particular to a temperature control system and control method for a battery swapping station. Background Technology

[0002] With the development of new energy vehicles, battery swapping stations for these vehicles have also gradually emerged. During charging and discharging, the battery packs within these stations require heat dissipation or the provision of heat to ensure their cell temperatures remain stable within the optimal operating range, preventing capacity and lifespan degradation. Similarly, the charger module generates significant heat during operation, necessitating heat dissipation to ensure its longevity. Therefore, a temperature control system is required for the battery swapping station to regulate the temperature of both the battery pack and the charger.

[0003] The existing temperature control system of the battery swapping station has the problem of high energy consumption. Summary of the Invention

[0004] This invention provides a temperature control system and control method for a battery swapping station. By exchanging heat with the battery compartment and refrigerant circulation system through a fluid control element, the system achieves effective utilization of waste heat, reduces additional energy input, and lowers energy consumption.

[0005] In a first aspect, the present invention provides a temperature control system for a battery swapping station, comprising: a refrigerant circulation system, a charger module, an energy storage module, a battery compartment, and a fluid control element; the battery compartment is connected to both the refrigerant circulation system and the fluid control element, and is used to store a battery pack; the charger module is connected to both the energy storage module and the refrigerant circulation system, and is used to charge the battery pack, while the energy storage module is used to store hot water; the fluid control element is used to exchange heat between the energy storage module and the battery compartment; the fluid control element is also used to form a circulation loop between the energy storage module and the refrigerant circulation system, and to exchange heat with the battery compartment; the fluid control element is also used to exchange heat between the charger module and the battery compartment.

[0006] Optionally, the temperature control system of the battery swapping station also includes a dry cooler, which is connected to the refrigerant circulation system and is used to exchange heat with the air; the fluid control element is also used to form a circulation loop between the charger module, the energy storage module and the dry cooler, and to exchange heat with the battery compartment; the fluid control element is also used to form a circulation loop between the charger module and the dry cooler, and to exchange heat with the battery compartment; the fluid control element is also used to form a circulation loop between the charger module, the dry cooler and the refrigerant circulation system, and to exchange heat with the battery compartment.

[0007] Optionally, the fluid control element includes a first two-way valve, a first circulating pump, a second circulating pump, a third circulating pump, a first four-way valve, and a second four-way valve; the first end of the first two-way valve is connected to the first end of the refrigerant circulation system and the first end of the dry cooler, respectively; the second end of the first two-way valve is connected to the second end of the dry cooler and the first end of the first circulating pump, respectively; the second end of the first circulating pump is connected to the second end of the refrigerant circulation system; the first end of the second circulating pump is connected to the second end of the first two-way valve, and the second end of the second circulating pump is connected to the second end of the first four-way valve; the first four-way valve's... One end is connected to the fourth end of the refrigerant circulation system; the third end of the first four-way valve is connected to the first end of the charger module; the fourth end of the first four-way valve is connected to the second end of the battery compartment; the first end of the battery compartment is connected to the third end of the refrigerant circulation system; the first end of the third circulation pump is connected to the second end of the charger module; the second end of the third circulation pump is connected to the first end of the second four-way valve; the second end of the second four-way valve is connected to the second end of the energy storage module; the third end of the second four-way valve is connected to the first end of the refrigerant circulation system; and the fourth end of the second four-way valve is connected to the first end of the charger module.

[0008] Optionally, the temperature control system of the battery swapping station also includes a three-way valve, a fourth circulation pump, and a second two-way valve; the second two-way valve is located in the control room of the battery swapping station; the first end of the three-way valve is connected to the first end of the battery compartment, the second end of the three-way valve is connected to the first end of the fourth circulation pump, the second end of the fourth circulation pump is connected to the first end of the second two-way valve, the third end of the three-way valve is connected to the second end of the charger module; and the second end of the second two-way valve is connected to the fourth end of the first four-way valve.

[0009] Optionally, the temperature control system further includes a water tank and a fifth circulating water pump; the water tank and the fifth circulating water pump are sequentially connected between the first end of the first four-way valve and the fourth end of the refrigerant circulation system; and / or, the temperature control system further includes a first vent valve and a first filter, a second vent valve and a second filter; the first vent valve and the first filter are sequentially connected in series between the first end of the refrigerant circulation system and the first end of the dry cooler; the second vent valve and the second filter are sequentially connected in series between the third end of the refrigerant circulation system and the first end of the battery compartment.

[0010] Secondly, the present invention provides a control method for a temperature control system, used in any embodiment of the temperature control system provided by the present invention. The control method includes: determining a target operating mode of the temperature control system based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system; controlling the refrigerant circulation system to be in a heating state or a non-operating state according to the target operating mode, and controlling the conduction state of the fluid control element; wherein the control commands include heating commands, and the target operating modes include an energy storage module preheating mode, a heat pump preheating mode, and a charger module preheating mode.

[0011] Optionally, the control command may also include a cooling command, and the target operating mode may also include a first cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode; the step of controlling the refrigerant circulation system to be in a heating state or a non-operating state according to the target operating mode, and controlling the conduction state of the fluid control element includes: controlling the refrigerant circulation system to be in a heating state, a cooling state, or a non-operating state according to the target operating mode, and controlling the conduction state of the fluid control element.

[0012] Optionally, the step of determining the target operating mode of the temperature control system based on the number of battery packs in the battery compartment that are in a charging state and the control command received by the temperature control system includes: when all N battery packs in the battery compartment are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of the energy storage module is ≥ the set inlet water temperature Ts of the battery compartment and the inlet water temperature Tin_1 of the battery compartment is ≤ the set inlet water temperature Ts of the battery compartment - the first set value, the target operating mode is determined to be the energy storage module preheating mode; when all N battery packs in the battery compartment are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of the energy storage module is < the set inlet water temperature Ts of the battery compartment and the water temperature Tc of the energy storage module is ≥ the outlet water temperature Tg of the dry cooler + the second set value, the target operating mode is determined to be the heat pump preheating mode; when the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than N, the temperature control system receives a heating command, and the water temperature Tc of the energy storage module is less than ... When the outlet water temperature Tout_1 of the battery module is greater than or equal to the set inlet water temperature Ts of the battery compartment and the inlet water temperature Tin_1 of the battery compartment is less than or equal to the set inlet water temperature Ts of the battery compartment minus the first set value, the target operating mode is determined to be the preheating mode of the charger module; when the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the outdoor ambient temperature Ta is less than the first preset temperature, the target operating mode is determined to be the first cooling mode; when the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the first preset temperature is less than or equal to the outdoor ambient temperature Ta and less than the second preset temperature, the second cooling mode is operated; when the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the second preset temperature is less than or equal to the outdoor ambient temperature Ta and less than the third preset temperature, the third cooling mode is operated.

[0013] When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and when the outdoor ambient temperature Ta is greater than or equal to the third preset temperature, the fourth cooling mode is run; where N is an integer greater than or equal to 2, the first preset temperature is less than the second preset temperature, and the second preset temperature is less than the third preset temperature.

[0014] Optionally, the temperature control system also includes a dry cooler, and the fluid control elements include a first two-way valve, a first circulating pump, a second circulating pump, a third circulating pump, a first four-way valve, and a second four-way valve. The steps of controlling the refrigerant circulation system to be in heating, cooling, or non-operating state according to the target operating mode, and controlling the conduction state of the fluid control elements, include: when the temperature control system is operating in the energy storage module preheating mode, controlling the refrigerant circulation system to be in a non-operating state, and controlling the electric two-way valve inside the dry cooler to close, the first two-way valve to open, the first and second ends, the third and fourth ends of the first four-way valve to connect, the second and third ends of the second four-way valve to connect, and the first circulating pump not... The system operates as follows: First, the refrigerant circulation system is in heating mode; second, the refrigerant circulation system is in heating mode; third, the refrigerant circulation system is in heating mode; electric two-way valve inside the dry cooler is closed; first two-way valve is open; second and third ends of first four-way valve are connected; first and fourth ends of second four-way valve are connected; first and second circulation pumps are in operation; third, the refrigerant circulation system is in non-operational mode; electric two-way valve inside the dry cooler is closed; first two-way valve is open; first and second ends of first four-way valve are connected. When the temperature control system is operating in the first cooling mode, the refrigerant circulation system is kept in a non-operating state, and the electric two-way valve inside the dry cooler is opened, the first two-way valve is closed, and the first and second, third and fourth ends of the first four-way valve are connected. Similarly, the first and second, third and fourth ends of the second four-way valve are connected, and the first, second, and third ends of the second four-way valve are connected. The first circulation pump is not operating, but the second and third circulation pumps are operating. When the temperature control system is operating in the second cooling mode, the refrigerant circulation system is kept in a non-operating state. It controls the opening of the electric two-way valve inside the dry cooler, the closing of the first two-way valve, the connection between the first and second ends, the connection between the third and fourth ends of the first four-way valve, the connection between the first and third ends of the second four-way valve, the inoperability of the first circulation pump, the operation of the second circulation pump, and the operation of the third circulation pump; when the temperature control system is operating in the third or fourth refrigeration mode, it controls the refrigerant circulation system to be in a refrigeration state, and controls the opening of the electric two-way valve inside the dry cooler, the closing of the first two-way valve, the connection between the first and second ends, the connection between the third and fourth ends of the first four-way valve, the connection between the first and third ends of the second four-way valve, the operation of the first circulation pump, the operation of the second circulation pump, and the operation of the third circulation pump.

[0015] Optionally, the temperature control system also includes a three-way valve, a fourth circulation pump, and a second two-way valve; the second two-way valve is located in the control room of the battery swapping station; the control method further includes: determining the conduction status of the three-way valve, the fourth circulation pump, and the second two-way valve based on the number of battery packs in the battery compartment that are in a charging state, the control command received by the temperature control system, the relationship between the set temperature of the control room and the ambient temperature of the control room, and the relationship between the inlet water temperature of the battery compartment and the set temperature of the control room.

[0016] The temperature control system provided by this invention includes a refrigerant circulation system, a charger module, an energy storage module, a battery compartment, and a fluid control element. First, by configuring the fluid control element, energy can be precisely distributed to where heat exchange is needed, avoiding energy waste and disordered transfer. Second, the energy storage module stores hot water and exchanges heat with the battery compartment and refrigerant circulation system through the fluid control element, achieving effective utilization of waste heat and reducing additional energy input. Finally, the connection between the charger module and the refrigerant circulation system, as well as its heat exchange configuration with the battery compartment, allows for the effective utilization and management of heat generated during charging, avoiding energy waste. In summary, through reasonable design, precise control, and effective energy recovery and utilization, this temperature control system achieves low energy consumption.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a temperature control system for a battery swapping station provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of another temperature control system for a battery swapping station provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of another temperature control system for a battery swapping station provided in an embodiment of the present invention;

[0022] Figure 4 This is a flowchart of a control method for a temperature control system provided in an embodiment of the present invention;

[0023] Figure 5 This is a flowchart of another temperature control system control method provided in an embodiment of the present invention;

[0024] Figure 6 This is a flowchart of another temperature control system control method provided in the embodiments of the present invention.

[0025] Figure label:

[0026] 1-Refrigerant circulation system; 11-First heat exchanger; 12-Second heat exchanger; 13-Compressor; 14-Gas-liquid separator; 15-Expansion valve; 16-Four-way reversing valve; 17-Drier filter;

[0027] 2-Charger module; 3-Energy storage module; 4-Battery compartment;

[0028] 5-Fluid control element; 51-First two-way valve; 52-First circulating pump; 53-Second circulating pump; 54-Third circulating pump; 55-First four-way valve; 56-Second four-way valve;

[0029] 6-Dry cooler; 61-Condenser fan; 62-Heat exchange coil;

[0030] B1 - First end of the first four-way valve; B2 - Second end of the first four-way valve; B3 - Third end of the first four-way valve; B4 - Fourth end of the first four-way valve;

[0031] C1 - First end of the second four-way valve; C2 - Second end of the second four-way valve; C3 - Third end of the second four-way valve; C4 - Fourth end of the second four-way valve;

[0032] A1 - First end of the four-way directional valve; A2 - Second end of the four-way directional valve; A3 - Third end of the four-way directional valve; A4 - Fourth end of the four-way directional valve;

[0033] 18-Water tank; 19-Fifth circulating water pump; 20-First air vent valve; 21-First filter; 22-Second air vent valve; 23-Second filter; 24-First temperature sensor; 25-Second temperature sensor; 26-Third temperature sensor; 27-Fourth temperature sensor; 28-Fifth temperature sensor; 29-Three-way valve; 30-Fourth circulating pump; 31-Control room. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Figure 1 This is a schematic diagram of the structure of a temperature control system for a battery swapping station provided in an embodiment of the present invention. Figure 1 As shown, the temperature control system of the battery swapping station includes: a refrigerant circulation system 1, a charger module 2, an energy storage module 3, a battery compartment 4, and a fluid control element 5.

[0037] The battery compartment 4 is connected to the refrigerant circulation system 1 and the fluid control element 5 respectively, and the battery compartment 4 is used to store the battery pack.

[0038] The charger module 2 is connected to the energy storage module 3 and the refrigerant circulation system 1 respectively. The charger module 2 is used to charge the battery pack, and the energy storage module 3 is used to store hot water.

[0039] Fluid control element 5 is used to exchange heat between energy storage module 3 and battery compartment 4. Fluid control element 5 is used to form a circulation loop between energy storage module 3 and refrigerant circulation system 1, and to exchange heat with battery compartment 4. Fluid control element 5 is also used to exchange heat between charger module 2 and battery compartment 4.

[0040] Specifically, the refrigerant circulation system 1 can be a system including a compressor, and the refrigerant circulation system 1 has three operating states, namely, cooling state, heating state and non-operating state.

[0041] Optionally, the charger module 2 includes multiple chargers and multiple electric two-way valves, with each charger connected to one of the multiple electric two-way valves in a one-to-one correspondence. The battery compartment 4 stores N battery packs, where N is an integer greater than or equal to 2. The battery compartment 4 may also include multiple solenoid valves and other fluid control components.

[0042] In some embodiments, the temperature control system further includes a dry cooler 6, which is connected to the refrigerant circulation system 1 and is used for heat exchange with air. Optionally, the dry cooler 6 includes a condenser fan 61, a heat exchange coil 62, and a plurality of electrically operated two-way valves connected in series and parallel. Optionally, the dry cooler 6 also includes a frame, within which the condenser fan 61 and the heat exchange coil 62 are disposed. The condenser fan 61 can accelerate the heat exchange efficiency between the heat exchange coil 62 and the air.

[0043] In some embodiments, the station control system in the battery swapping station can send control commands to the controller in the temperature control system. For example, assuming the set operating temperature range of the battery pack is 10-35℃, the station control system monitors the actual temperature T1 of the battery pack in real time. If the actual temperature T1 is within the 10-35℃ range, the cooling demand FC and heating demand FH are both 0, and the station control system does not send control commands to the controller in the temperature control system. If the actual temperature T1 is greater than 35℃, the cooling demand FC = (T1-35) / Tpc*100%, and the station control system sends a cooling command to the controller in the temperature control system. If the actual temperature T1 is less than 10℃, the heating demand FH = (10-T1) / Tph*100%, and the station control system sends a heating command to the controller in the temperature control system. Here, Tpc is the cooling proportional coefficient, and Tph is the heating proportional coefficient. For example, Tpc = Tph = 2.

[0044] In some embodiments, the controller in the temperature control system determines the target operating mode based at least on the number of battery packs in the battery compartment 4 that are in a charging state and the received control commands. Based on the target operating mode, the controller controls the refrigerant circulation system 1 to be in a heating state or a non-operating state, and controls the conduction state of the fluid control element 5. The control commands include heating commands, and the target operating modes include energy storage module preheating mode, heat pump preheating mode, and charger module preheating mode.

[0045] For example, when all N battery packs in battery compartment 4 are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of energy storage module 3 is greater than or equal to the set inlet water temperature Ts of battery compartment 4 and the inlet water temperature Tin_1 of battery compartment 4 is less than or equal to the set inlet water temperature Ts of battery compartment 4 minus a first set value, the target operating mode is determined to be the energy storage module preheating mode. Specifically, when all N battery packs in battery compartment 4 are not in a charging state, that is, the number of working battery packs is 0, that is, none of the chargers in charger module 2 are working, then charger module 2 does not generate heat that can be used. The function of energy storage module 3 is to store hot water. At this time, the hot water in energy storage module 3 can be used to meet the heating demand proposed by the station control system. However, the preheating function of energy storage module 3 can only be performed if the water temperature Tc of energy storage module 3 is greater than or equal to the set inlet water temperature Ts of battery compartment 4 and the inlet water temperature Tin_1 of battery compartment 4 is less than or equal to the set inlet water temperature Ts of battery compartment 4 minus a first set value. For example, the station control system sends a heating command and the set inlet water temperature Ts of battery compartment 4 is 18°C ​​to the temperature control system, with a first set value of 1°C. The hot water from energy storage module 3 can only provide heating when the water temperature Tc of energy storage module 3 is ≥ 18°C, therefore, the condition that the water temperature Tc of energy storage module 3 ≥ the set inlet water temperature Ts of battery compartment 4 must be met. Since the set inlet water temperature Ts of battery compartment 4 is the target inlet water temperature, heating is only required when the inlet water temperature Tin_1 of battery compartment 4 is < the set inlet water temperature Ts of battery compartment 4. When the temperature control system operates in the energy storage module preheating mode, the fluid control element 5 is configured to exchange heat between energy storage module 3 and battery compartment 4.

[0046] When all N battery packs in battery compartment 4 are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of energy storage module 3 is less than the set inlet water temperature Ts of battery compartment 4 and the water temperature Tc of energy storage module 3 is greater than or equal to the outlet water temperature Tg of dry cooler 6 plus the second set value, the target operating mode is determined to be heat pump preheating mode. When the energy storage module preheating mode is running, the hot water from the energy storage module 3 continuously heats the battery compartment 4. The water temperature will drop until the water from the energy storage module 3 can no longer heat the battery compartment 4. At this point, the heat pump preheating mode needs to be activated. The refrigerant circulation system 1 provides heat dissipation to heat the battery compartment 4. The water exiting the refrigerant circulation system 1 after heat exchange is cold water. This cold water flows into the energy storage module 3 and mixes with the hot water returning from the energy storage module 3 before the first two-way valve 51 to form warm water. This warm water then flows into the energy storage module 3 to exchange heat with the hot water in the energy storage module 3. Therefore, the water temperature in the energy storage module 3 needs to be higher than the outlet water temperature Tg of the dry cooler 6 to facilitate heat exchange and remove the cold energy generated by the heat exchanger in the refrigerant circulation system 1. Only then can the refrigerant circulation system 1 function normally, and the heat pump preheating mode can proceed. When the temperature control system is operating in the heat pump preheating mode, the fluid control element 5 is configured to form a circulation loop between the energy storage module 3 and the refrigerant circulation system 1, and to exchange heat with the battery compartment 4. This embodiment of the invention does not specifically limit the magnitude of the second set value; it can be set according to actual needs. For example, the second setting value can be 2°C.

[0047] When the number of battery packs in charging state in battery compartment 4 is greater than 0 and less than N, the temperature control system receives a heating command, and the outlet water temperature Tout_1 of charger module 2 is greater than or equal to the set inlet water temperature Ts of battery compartment 4, and the inlet water temperature Tin_1 of battery compartment 4 is less than or equal to the set inlet water temperature Ts of battery compartment 4 minus the first set value, the target operating mode is determined to be the charger module preheating mode. When the station control system sends a heating command to the temperature control system, and the number of working battery packs is 0 < n < N (i.e., some chargers in charger module 2 are working), the heat generated by these chargers can be utilized. Water flowing through the chargers will be heated, and the heated water can be provided to other battery packs that are not in charging state for heating. For example, if the station control system sends a heating command and the set inlet water temperature Ts of battery compartment 4 is 18°C ​​to the temperature control system, the hot water from charger module 2 can only provide heating when the outlet water temperature Tc of charger module 2 is greater than or equal to 18°C. Therefore, the outlet water temperature Tout_1 of charger module 2 needs to be greater than or equal to the set inlet water temperature Ts of battery compartment 2. Since the set inlet water temperature Ts of battery compartment 4 is the target inlet water temperature, heating is only required when the inlet water temperature Tin_1 of battery compartment 4 is less than the set inlet water temperature Ts of battery compartment 4. When the temperature control system is operating in the charger module preheating mode, the fluid control element 5 is configured to exchange heat between the charger module 2 and the battery compartment 4.

[0048] The temperature control system provided in this invention includes a refrigerant circulation system, a charger module, an energy storage module, a battery compartment, and a fluid control element. First, by configuring the fluid control element, energy can be precisely distributed to where heat exchange is needed, avoiding energy waste and disordered transfer. Second, the energy storage module stores hot water and exchanges heat with the battery compartment and refrigerant circulation system through the fluid control element, achieving effective utilization of waste heat and reducing additional energy input. Finally, the connection between the charger module and the refrigerant circulation system, as well as its heat exchange configuration with the battery compartment, allows for the effective utilization and management of heat generated during charging, avoiding energy waste. In summary, through reasonable design, precise control, and effective energy recovery and utilization, this temperature control system achieves low energy consumption.

[0049] Continue to refer to Figure 1 Optionally, the temperature control system also includes a dry cooler 6, which is connected to the refrigerant circulation system 1 and is used to exchange heat with the air.

[0050] The fluid control element 5 is also used to form a circulation loop between the charger module 2, the energy storage module 3, and the dry cooler 6, and to exchange heat with the battery compartment 4. The fluid control element 5 is also used to form a circulation loop between the charger module 2, the dry cooler 6, and the refrigerant circulation system 1, and to exchange heat with the battery compartment 4. Exemplarily, the fluid control element 5 may include at least a valve and a circulation pump.

[0051] Specifically, the target operating modes include the first cooling mode, the second cooling mode, the third cooling mode, and the fourth cooling mode.

[0052] For example, when the number of battery packs in the charging state in battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the outdoor ambient temperature Ta is less than the first preset temperature, the target operating mode is determined to be the first cooling mode. When the number of battery packs in the charging state in battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the first preset temperature is less than or equal to the outdoor ambient temperature Ta and less than the second preset temperature, the second cooling mode is operated. When the number of battery packs in the charging state in battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the second preset temperature is less than or equal to the outdoor ambient temperature Ta and less than the third preset temperature, the third cooling mode is operated. When the number of battery packs in the charging state in battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the outdoor ambient temperature Ta is greater than or equal to the third preset temperature, the fourth cooling mode is operated. Here, N is an integer greater than or equal to 2, the first preset temperature is less than the second preset temperature, and the second preset temperature is less than the third preset temperature.

[0053] Specifically, the embodiments of the present invention do not impose specific limitations on the values ​​of the first preset temperature, the second preset temperature, and the third preset temperature, which can be set according to actual needs. For example, the first preset temperature can be -5℃, the second preset temperature can be 0℃, and the third preset temperature can be 5℃.

[0054] When the temperature control system operates in the first cooling mode, the fluid control element 5 is configured to form a circulation loop between the charger module 2, the energy storage module 3, and the dry cooler 6, and to exchange heat with the battery compartment 4. At this time, the refrigerant circulation system 1 is not running; only the dry cooler 6 is used to transfer heat between the outdoor ambient cooling and the battery pack. Simultaneously, the hot water that has passed through the charger module 2 can be circulated for heat exchange and stored in the energy storage module 3. The cooling capacity of the temperature control system can be adjusted by changing the speed of the condenser fan 61 in the dry cooler 6.

[0055] When the temperature control system operates in the second cooling mode, the fluid control element 5 is configured to form a circulation loop between the charger module 2 and the dry cooler 6, and exchange heat with the battery compartment 4. At this time, the refrigerant circulation system 1 does not operate; only the dry cooler 6 is used to transfer and exchange heat between the outdoor ambient cooling and the battery pack heat, so that the temperature of the water flowing into the battery compartment 4 meets the set inlet water temperature of the battery compartment 4. In this case, it is not necessary to start the refrigerant circulation system 1 for cooling and heat exchange with the water, thereby reducing power consumption.

[0056] When the temperature control system is operating in the third cooling mode, the fluid control element 5 is configured to form a circulation loop between the charger module 2, the dry cooler 6, and the refrigerant circulation system 1, and to exchange heat with the battery compartment 4. At this time, the refrigerant circulation system 1 is operating in a cooling state, and the dry cooler 6 and the refrigerant circulation system 1 together serve as the cold source for the current heat exchange.

[0057] When the temperature control system is operating in the fourth cooling mode, the fluid control element 5 is configured to form a circulation loop between the charger module 2, the dry cooler 6, and the refrigerant circulation system 1, and to exchange heat with the battery compartment 4. At this time, the refrigerant circulation system 1 operates in a cooling state and serves as the cold source for the current heat exchange.

[0058] Figure 2 This is a schematic diagram of the structure of another temperature control system for a battery swapping station provided in an embodiment of the present invention. For example... Figure 2 As shown, the fluid control element 5 includes a first two-way valve 51, a first circulating pump 52, a second circulating pump 53, a third circulating pump 54, a first four-way valve 55, and a second four-way valve 56.

[0059] The first end of the first two-way valve 51 is connected to the first end of the refrigerant circulation system 1 and the first end of the dry cooler 6, respectively. The second end of the first two-way valve 51 is connected to the second end of the dry cooler 6 and the first end of the first circulation pump 52, respectively. The second end of the first circulation pump 52 is connected to the second end of the refrigerant circulation system 1. The first end of the second circulation pump 53 is connected to the second end of the first two-way valve 51, and the second end of the second circulation pump 53 is connected to the second end of the first four-way valve 55.

[0060] The first end of the first four-way valve 55 is connected to the fourth end of the refrigerant circulation system 1. The third end of the first four-way valve 55 is connected to the first end of the charger module 2. The fourth end of the first four-way valve 55 is connected to the second end of the battery compartment 4. The first end of the battery compartment 4 is connected to the third end of the refrigerant circulation system 1. The first end of the third circulation pump 54 is connected to the second end of the charger module 2. The second end of the third circulation pump 54 is connected to the first end of the second four-way valve 56. The second end of the second four-way valve 56 is connected to the second end of the energy storage module 3. The third end of the second four-way valve 56 is connected to the first end of the refrigerant circulation system 1. The fourth end of the second four-way valve 56 is connected to the first end of the charger module 2.

[0061] Optionally, the refrigerant circulation system 1 includes a first heat exchanger 11, a second heat exchanger 12, a compressor 13, a gas-liquid separator 14, an expansion valve 15, a four-way reversing valve 16, and a dryer filter 17.

[0062] The outlet on the water side of the first heat exchanger 11 serves as the first end of the refrigerant circulation system 1, and the inlet on the water side of the first heat exchanger 11 serves as the second end of the refrigerant circulation system 1. The outlet on the water side of the second heat exchanger 12 serves as the third end of the refrigerant circulation system 1, and the inlet on the water side of the second heat exchanger 12 serves as the fourth end of the refrigerant circulation system 1.

[0063] The first end of the compressor 13 is connected to the first end of the four-way reversing valve 16, the second end of the compressor 13 is connected to the first end of the gas-liquid separator 14, and the second end of the gas-liquid separator 14 is connected to the third end of the four-way reversing valve 16.

[0064] The second end of the four-way reversing valve 16 is connected to the refrigerant inlet of the first heat exchanger 11, and the fourth end of the four-way reversing valve 16 is connected to the refrigerant outlet of the second heat exchanger 12. The four-way reversing valve 16 is used to change the flow direction of the refrigerant in the first heat exchanger 11 and the second heat exchanger 12, so that the refrigerant circulation system 1 operates in heating or cooling mode. The first end of the expansion valve 15 is connected to the second end of the dryer filter 17, and the second end of the expansion valve 15 is connected to the refrigerant inlet of the second heat exchanger 12. The first end of the dryer filter 17 is connected to the refrigerant outlet of the first heat exchanger 11.

[0065] Specifically, the embodiments of the present invention do not specifically limit the specific types of the first heat exchanger 11 and the second heat exchanger 12. For example, the first heat exchanger 11 and the second heat exchanger 12 can be shell-and-tube heat exchangers or plate heat exchangers. The first heat exchanger 11 and the second heat exchanger 12 serve as condensers or evaporators.

[0066] The gas-liquid separator 14 can prevent excessive liquid from flowing back into the compressor 13, reducing the probability of liquid slugging in the compressor 13, lowering the failure rate of the compressor 13, and extending the service life of the compressor 13. The dryer filter 17 can absorb moisture in the refrigerant circuit and block impurities in the refrigerant circuit from passing through, preventing blockage of the refrigerant circuit pipeline.

[0067] When the refrigerant circulation system 1 is operating in refrigeration mode, the first heat exchanger 11 acts as a condenser and the second heat exchanger 12 acts as an evaporator. Low-temperature, low-pressure refrigerant enters the compressor 13, which compresses the refrigerant into a high-temperature, high-pressure vapor refrigerant and discharges it from the first end of the compressor 13. The discharged vapor refrigerant passes through the first end A1 and the second end A2 of the four-way reversing valve 16 and enters the first heat exchanger 11 to exchange heat with the water side of the first heat exchanger 11. This causes the superheated vapor refrigerant to gradually become a saturated vapor refrigerant, which then condenses and releases heat to become a saturated liquid refrigerant. After being throttled and depressurized by the expansion valve 15, the liquid refrigerant then enters the second heat exchanger 12 to exchange heat with the water side of the second heat exchanger 12. It evaporates and absorbs heat to become a low-temperature, low-pressure vapor refrigerant, which then enters the gas-liquid separator 14 through the fourth end A4 and the third end A3 of the four-way reversing valve 16 for gas-liquid separation and returns to the second end of the compressor 13. This cycle repeats continuously to achieve refrigeration.

[0068] When the refrigerant circulation system 1 is operating in heating mode, the first heat exchanger 11 acts as an evaporator and the second heat exchanger 12 acts as a condenser. Low-temperature, low-pressure vapor refrigerant enters the compressor 13, which compresses the refrigerant into a high-temperature, high-pressure vapor refrigerant, which is then discharged from the first end of the compressor 13. The discharged vapor refrigerant passes through the first end A1 and the fourth end A4 of the four-way reversing valve 16 and enters the second heat exchanger 12 to exchange heat with the water side, cooling the superheated vapor refrigerant into a saturated vapor refrigerant. It then condenses and releases heat to become a saturated liquid refrigerant. After being throttled and depressurized by the expansion valve 15, the liquid refrigerant then enters the first heat exchanger 11 to exchange heat with the water side, evaporating and absorbing heat to become a low-temperature, low-pressure vapor refrigerant. It then passes through the second end A2 and the third end A3 of the four-way reversing valve 16 and enters the gas-liquid separator 14 for gas-liquid separation before returning to the second end of the compressor 13. This cycle repeats continuously to achieve heating.

[0069] Continue to refer to Figure 2Optionally, the temperature control system also includes a water tank 18 and a fifth circulating water pump 19. The water tank 18 and the fifth circulating water pump 19 are sequentially connected between the first end of the first four-way valve 55 and the fourth end of the refrigerant circulation system 1. And / or, the temperature control system also includes a first vent valve 20 and a first filter 21, a second vent valve 22 and a second filter 23. The first vent valve 20 and the first filter 21 are sequentially connected in series between the first end of the refrigerant circulation system 1 and the first end of the dry cooler 6. The second vent valve 22 and the second filter 23 are sequentially connected in series between the third end of the refrigerant circulation system 1 and the first end of the battery compartment 4.

[0070] Specifically, the water tank 18 can be an open expansion tank. Because water expands and contracts with temperature changes, the water tank 18 and the fifth circulating water pump 19 buffer the water after heat exchange, further improving the energy efficiency of the temperature control system. The first vent valve 20 and the second vent valve 22 can expel any air that may have entered the first heat exchanger 11 and the second heat exchanger 12 during operation, ensuring stable flow of coolant within them. The first filter 21 and the second filter 23 can block impurities in the water path, preventing blockages in the first heat exchanger 11, the second heat exchanger 12, the dry cooler 6, and the battery compartment 4, which could lead to poor heat exchange and system malfunctions.

[0071] Optionally, the temperature control system also includes a first temperature sensor 24, a second temperature sensor 25, a third temperature sensor 26, a fourth temperature sensor 27, and a fifth temperature sensor 28. The first temperature sensor 24 is used to collect the outdoor ambient temperature; the second temperature sensor 25 is used to collect the outlet water temperature of the dry cooler; the third temperature sensor 26 is used to collect the inlet water temperature of the battery compartment; the fourth temperature sensor 27 is used to collect the water temperature of the energy storage module; and the fifth temperature sensor 28 is used to collect the outlet water temperature of the charger module. All of the first temperature sensor 24, second temperature sensor 25, third temperature sensor 26, fourth temperature sensor 27, and fifth temperature sensor 28 are connected to the controller in the temperature control system.

[0072] Continue to refer to Figure 2 The working principle of the temperature control system of the battery swapping station provided in this embodiment of the invention is as follows:

[0073] When the temperature control system is operating in the energy storage module preheating mode, the refrigerant circulation system 1 is inactive, and the electric two-way valve inside the dry cooler 6 is closed. The first two-way valve 51 is open, and the first end B1 and the second end B2 of the first four-way valve 55 are connected, as are the third end B3 and the fourth end B4. The second end C2 and the third end C3 of the second four-way valve 56 are connected. The first circulation pump 52 is not working, the second circulation pump 53 is working, and the third circulation pump 54 is not working. The second circulation pump 53 circulates the hot water in the energy storage module 3, which flows sequentially through the second four-way valve 56, the first two-way valve 51, the second circulation pump 53, the first four-way valve 55, the water tank 18, the fifth circulation pump 19, the second heat exchanger 12, and the second filter 23 before flowing into the battery pack in the battery compartment 4 for heat exchange. After heat exchange, it flows back through the first four-way valve 55 and finally returns to the energy storage module 3 for recirculation and heat exchange.

[0074] When the temperature control system is operating in heat pump preheating mode, it controls the refrigerant circulation system 1 to be in heating state and controls the electric two-way valve inside the dry cooler 6 to be closed, the first two-way valve 51 to be opened, the second end B2 and the third end B3 of the first four-way valve 55 to be connected, the first end B1 and the fourth end B4 to be connected, the second end C2 and the third end C3 of the second four-way valve 56 to be connected, the first circulation pump 52 to be working, the second circulation pump 53 to be working, and the third circulation pump 54 to be not working. The first heat exchanger 11 acts as an evaporator. The cold water flowing out after heat exchange within it mixes with the hot water returning from the energy storage module 3 before the first two-way valve 51. This mixture is then circulated through the first circulation pump 52 and the second circulation pump 53, flowing in two separate paths. One path directly circulates the mixed warm water back to the first heat exchanger 11 via the first circulation pump 52 for further heat exchange. The other path circulates through the second circulation pump 53, passing through the first four-way valve 55 into the energy storage module 3, where it mixes with the hot water and exchanges heat. It then flows through the second four-way valve 56, mixing with the cold water from the first heat exchanger 11 before the first two-way valve 51. The second heat exchanger 12 acts as a condenser. The hot water that has completed heat exchange within it is circulated through the fifth circulation pump 19 to the battery pack for further heat exchange. After completing heat exchange, it passes through the first four-way valve 55 and the water tank 18, finally flowing back to the second heat exchanger 12 for recirculation.

[0075] When the temperature control system is operating in the preheating mode of the charger module, the refrigerant circulation system 1 is kept inactive, and the electric two-way valve inside the dry cooler 6 is closed. The first two-way valve 51 is opened, and the first end B1 and the second end B2 of the first four-way valve 55 are connected, as are the third end B3 and the fourth end B4. The first end C1 and the third end C3 of the second four-way valve 56 are connected. The first circulation pump 52 is not working, while the second circulation pump 53 and the third circulation pump 54 are working. The operation of the second circulation pump 53 and the third circulation pump 54 circulates the hot water that has completed heat exchange in the charger module 2. The hot water passes through the second four-way valve 56, the first two-way valve 51, the second circulation pump 53, the first four-way valve 55, the water tank 18, the fifth circulation pump 19, the second heat exchanger 12, and the second filter 23 in sequence, and finally flows into the battery compartment 4 to exchange heat with the battery compartment 4. After completing the heat exchange, the hot water passes through the first four-way valve 55 and flows back to the charger module 2 for recirculation and heat exchange.

[0076] When the temperature control system is operating in the first cooling mode, the refrigerant circulation system 1 is inactive, and the electric two-way valve inside the dry cooler 6 is opened, the first two-way valve 51 is closed, the first end B1 and the second end B2 of the first four-way valve 55 are connected, and the third end B3 and the fourth end B4 are connected. The first end C1 and the second end C2 of the second four-way valve 56 are connected, and the third end C3 and the fourth end C4 are connected. The first circulation pump 52 is not working, the second circulation pump 53 is working, and the third circulation pump 54 is working. The chilled water that has completed heat exchange in the dry cooler 6 flows sequentially through the second circulation pump 53, the first four-way valve 55, the water tank 18, the fifth circulation pump 19, the second heat exchanger 12, and the second filter 23, and then flows into the battery pack in the battery compartment 4 for heat exchange and cooling. The warm water flowing out splits into two paths after passing through the first four-way valve 55. One path flows through the bypass pipe before the charger module 2, then through the second four-way valve 56, and finally flows into the dry cooler 6 to be cooled into cold water for recirculation and heat exchange. The other path flows into the charger module 2 to dissipate heat from the charger. The hot water from the charger module 2 is circulated back to the energy storage module 3 by the third circulation pump 54, and then flows back to the charger module 2. During this process, the water in the energy storage module 3 continuously stores energy and heats up. When the water temperature Tc in the energy storage module is greater than or equal to the fourth preset temperature, the third circulation pump 54 stops working, and the energy storage module 3 completes energy storage. It is understood that the value of the fourth preset temperature can be set according to actual needs, and this embodiment of the invention does not limit it. For example, the fourth preset temperature can be 55°C.

[0077] When the temperature control system operates in the second cooling mode, the refrigerant circulation system 1 is inactive, and the electric two-way valve inside the dry cooler 6 is opened, the first two-way valve 51 is closed, the first end B1 and the second end B2 of the first four-way valve 55 are connected, the third end B3 and the fourth end B4 are connected, and the first end C1 and the third end C3 of the second four-way valve 56 are connected. The first circulation pump 52 is not working, the second circulation pump 53 is working, and the third circulation pump 54 is working. The cold water that has completed heat exchange in the dry cooler 6 flows sequentially through the second circulation pump 53, the first four-way valve 55, the water tank 18, the fifth circulation pump 19, the second heat exchanger 12, and the second filter 23, and then flows into the battery pack in the battery compartment 4 for heat exchange and cooling. The warm water that comes out flows through the first four-way valve 55 and then into the charger module 2 to dissipate heat from the charger. The hot water from the charger module 2 is circulated back to the dry cooler 6 by the third circulation pump 54 to be cooled back into cold water for recirculation and heat exchange.

[0078] When the temperature control system is working in the third or fourth refrigeration mode, the refrigerant circulation system 1 is controlled to be in a refrigeration state, and the electric two-way valve inside the dry cooler 6 is controlled to open, the first two-way valve 51 is closed, the first end B1 and the second end B2 of the first four-way valve 55 are connected, the third end B3 and the fourth end B4 are connected, the first end C1 and the third end C3 of the second four-way valve 56 are connected, the first circulation pump 52 is working, the second circulation pump 53 is working, and the third circulation pump 54 is working. The hot water that has completed heat exchange in the first heat exchanger 11 mixes with the hot water returning from the charger module 2 and is cooled by the dry cooler 6. The water then flows out of the dry cooler 6 and splits into two streams. One stream of cold water flows through the second circulation pump 53, the first four-way valve 55, the water tank 18, and the fifth circulation pump 19, and then passes through the second heat exchanger 12 for further heat exchange, becoming even colder water. This cold water then flows into the battery pack for heat exchange and cooling. The warm water from the battery pack flows through the first four-way valve 55 and further into the charger module 2 for heat exchange and cooling. The hot water from the charger module 2 is circulated back to the dry cooler 6 by the third circulation pump 54 and cooled back into cold water for recirculation and heat exchange. The other stream of cold water is circulated back to the first heat exchanger 11 by the first circulation pump 52 for recirculation and heat exchange.

[0079] It should be noted that the outdoor ambient temperature in the third cooling mode is lower than that in the fourth cooling mode. The greater the temperature difference between the outdoor ambient temperature and the inlet water temperature of the dry cooler 6, the greater the heat exchange capacity of the dry cooler 6. For example, if the inlet water temperature of the dry cooler 6 is 50℃ and the outdoor ambient temperature is 0℃, the temperature difference between the inlet water temperature of the dry cooler 6 and the outdoor ambient temperature is 50℃, resulting in a large heat exchange capacity. The water flowing through the first heat exchanger 11 is at a lower temperature, allowing the compressor 13 to operate at low speed. When the outdoor ambient temperature rises to 10℃, the temperature difference between the inlet water temperature of the dry cooler 6 and the outdoor ambient temperature becomes 40℃. The heat exchange capacity of the dry cooler 6 is smaller, and the water flowing through the first heat exchanger 11 becomes hotter, requiring the compressor 13 to operate at high speed. Therefore, under the same cooling demand conditions, in the third cooling mode, the outdoor ambient temperature is low, and natural cold source heat exchange can be used. The compressor 13 outputs cooling at a lower speed, resulting in low power consumption and high energy efficiency, thus meeting the cooling demand. In the fourth cooling mode, the outdoor ambient temperature is high, and natural cold source heat exchange cannot be used or the heat exchange is very small. At this time, the compressor 13 needs to output cooling at a higher speed to meet the cooling demand.

[0080] Figure 3 This is a schematic diagram of the structure of another temperature control system for a battery swapping station provided in an embodiment of the present invention. For example... Figure 3 As shown, optionally, the temperature control system of the battery swapping station also includes a three-way valve 29, a fourth circulation pump 30, and a second two-way valve. The second two-way valve is located in the control room 31 of the battery swapping station. The first end of the three-way valve 29 is connected to the first end of the battery compartment 4, the second end of the three-way valve 29 is connected to the first end of the fourth circulation pump 30, the second end of the fourth circulation pump 30 is connected to the first end of the second two-way valve, and the third end of the three-way valve 29 is connected to the second end of the charger module 2. The second end of the second two-way valve is connected to the fourth end of the first four-way valve 55.

[0081] The conduction status of the three-way valve 29, the fourth circulation pump 30, and the second two-way valve is determined based on the number of battery packs in the battery compartment 4 that are in a charging state, the control commands received by the temperature control system, the relationship between the set temperature Tk of the control chamber 31 and the ambient temperature Tn of the control chamber 31, and the relationship between the inlet water temperature Tin_1 of the battery compartment 4 and the set temperature Tk of the control chamber 31.

[0082] When none of the battery packs in battery compartment 4 are charging, the station control system sends a heating command to the temperature control system. If the set temperature Tk of control room 4 minus the ambient temperature Tn of control room 4 is ≥ 1℃, and the inlet water temperature Tin_1 of battery compartment 4 is ≥ the set temperature Tk of control room 31, then the first end C1 and the second end C2 of the three-way valve 29 are connected. The second two-way water valve in control room 31 opens, and the fourth circulating pump 30 operates, circulating hot water into control room 31 for heat exchange. If the target operating mode of the temperature control system is the energy storage module preheating mode, the water after heat exchange passes through the first four-way valve 55 and finally flows back to the energy storage module 3 for recirculation and heat exchange. If the target operating mode of the temperature control system is the heat pump preheating mode, the water after heat exchange passes through the first four-way valve 55 and the water tank 18 and finally flows back to the second heat exchanger 12 for recirculation and heat exchange.

[0083] When none of the battery packs in the battery compartment are charging, the station control system sends a heating command to the temperature control system. When the ambient temperature Tn of the control room minus the set temperature Tk of the control room is greater than or equal to 1℃, or the inlet water temperature Tin_1 of the battery compartment is less than the set temperature Tk of the control room, the second end C2 and the third end C3 of the three-way valve 29 are connected, the second two-way valve in the control room 31 is closed, and the fourth circulation pump 30 is stopped.

[0084] When some battery packs in the battery compartment are charging and the number of charging battery packs is not greater than the total number of battery packs (i.e., 0 < n < N), the station control system sends a command to the temperature control system to enter heating mode. When the set temperature Tk of control room 31 minus the ambient temperature Tn of control room 31 is ≥ 1℃ and the outlet water temperature Tout_1 of charger module 2 is ≥ the set temperature Tk of control room 31, the second end C2 and the third end C3 of three-way valve 29 are connected, the electric two-way water valve in control room 31 opens, and the fourth circulation pump 30 operates, circulating hot water into control room 31 for heat exchange. After heat exchange, the hot water flows back to charger module 2 through the first four-way valve 55 for recirculation and heat exchange. When the ambient temperature Tn of control room 31 minus the set temperature Tk of control room 31 is ≥ 1℃ or the outlet water temperature Tout_1 of charger module 2 is < the set temperature Tk of control room 31, the first end C1 and the second end C2 of three-way valve 29 are connected, the second two-way valve in control room 31 closes, and the fourth circulation pump 30 stops.

[0085] When the number of battery packs in the battery compartment that are charging is greater than 0 or all batteries are charging (i.e., 0 < n ≤ N), the station control system sends a cooling command to the temperature control system. Furthermore, when the set temperature Tk of control room 31 minus the ambient temperature Tn of control room 31 is ≥ 1℃ and the outlet water temperature Tout_1 of charger module 2 is ≥ the set temperature Tk of control room 31, the second terminal C2 and the third terminal C3 of three-way valve 29 are connected. The second two-way valve in control room 31 opens, and the fourth circulation pump 30 operates, circulating hot water into control room 31 for heat exchange. After heat exchange, the water passes through the first four-way valve 55 and flows back to charger module 2 for recirculation and heat exchange.

[0086] When the number of battery packs in the battery compartment that are in a charging state is greater than 0 or all batteries are in a charging state, i.e. 0 < n ≤ N, the station control system sends a cooling command to the temperature control system. When the ambient temperature Tn of the control room 31 minus the set temperature Tk of the control room 31 is greater than or equal to 1℃, or the outlet water temperature Tout_1 of the charger module 2 is less than the set temperature Tk of the control room 31, the first end C1 and the second end C2 of the three-way valve 29 are connected, the second two-way valve in the control room 31 is closed, and the fourth circulation pump 30 stops.

[0087] Based on the same inventive concept, the present invention also provides a control method for a temperature control system to control the temperature control system provided in the above embodiments. Figure 4 This is a flowchart of a control method for a temperature control system provided in an embodiment of the present invention, see reference. Figure 1 and Figure 4 The control method of this temperature control system includes:

[0088] S101. Determine the target operating mode of the temperature control system based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system.

[0089] The control commands include heating commands, and the target operating modes include energy storage module preheating mode, heat pump preheating mode, and charger module preheating mode.

[0090] When all N battery packs in battery compartment 4 are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of energy storage module 3 is greater than or equal to the set inlet water temperature Ts of battery compartment 4 and the inlet water temperature Tin_1 of battery compartment 4 is less than or equal to the set inlet water temperature Ts of battery compartment 4 minus the first set value, the target operating mode is determined to be the energy storage module preheating mode.

[0091] When all N battery packs in battery compartment 4 are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of energy storage module 3 is less than the set inlet water temperature Ts of battery compartment 4 and the water temperature Tc of energy storage module 3 is greater than or equal to the outlet water temperature Tg of dry cooler 6 plus the second set value, the target operating mode is determined to be heat pump preheating mode.

[0092] When the number of battery packs in the charging state in the battery compartment 4 is greater than 0 and less than N, the temperature control system receives a heating command, and the outlet water temperature Tout_1 of the charger module 2 is greater than or equal to the set inlet water temperature Ts of the battery compartment 4 and the inlet water temperature Tin_1 of the battery compartment 4 is less than or equal to the set inlet water temperature Ts of the battery compartment 4 minus the first set value, the target operating mode is determined to be the charger module preheating mode.

[0093] S102. Control the refrigerant circulation system to be in heating mode or non-working mode according to the target operating mode, and control the conduction state of the fluid control element.

[0094] Specifically, when the temperature control system operates in the energy storage module preheating mode, the refrigerant circulation system 1 is inactive, and the fluid control element 5 is configured to exchange heat between the energy storage module 3 and the battery compartment 4. When the temperature control system operates in the heat pump preheating mode, the refrigerant circulation system 1 is in heating mode, and the fluid control element 5 is configured to form a circulation loop between the energy storage module 3 and the refrigerant circulation system 1, and exchange heat with the battery compartment 4. When the temperature control system operates in the charger module preheating mode, the refrigerant circulation system 1 is inactive, and the fluid control element 5 is configured to exchange heat between the charger module 2 and the battery compartment 4.

[0095] The control commands also include cooling commands, and the target operating modes include a first cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode. Figure 5 This is a flowchart of another temperature control system control method provided in an embodiment of the present invention, see reference. Figure 5 The control method of this temperature control system includes:

[0096] S201. Determine the target operating mode of the temperature control system based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system.

[0097] When the number of battery packs in the charging state in the battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and when the outdoor ambient temperature Ta is less than the first preset temperature, the target operating mode is determined to be the first cooling mode.

[0098] When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and when the first preset temperature is less than or equal to the outdoor ambient temperature Ta and less than the second preset temperature, the second cooling mode is activated.

[0099] When the number of battery packs in the battery compartment 4 that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the second preset temperature is less than or equal to the outdoor ambient temperature Ta and the third preset temperature, and the third cooling mode is activated.

[0100] When the number of battery packs in the charging state in the battery compartment 4 is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and when the outdoor ambient temperature Ta is greater than or equal to the third preset temperature, the fourth cooling mode is run; where N is an integer greater than or equal to 2, the first preset temperature is less than the second preset temperature, and the second preset temperature is less than the third preset temperature.

[0101] S202. Control the refrigerant circulation system to be in heating, cooling or non-operating state according to the target operating mode, and control the conduction state of the fluid control element.

[0102] refer to Figure 2 Optionally, the temperature control system also includes a dry cooler 6, and the fluid control element 5 includes a first two-way valve 51, a first circulating pump 52, a second circulating pump 53, a third circulating pump 54, a first four-way valve 55, and a second four-way valve 56.

[0103] When the temperature control system operates in the energy storage module preheating mode, the refrigerant circulation system 1 is in a non-operating state, and the electric two-way valve inside the dry cooler 6 is closed, the first two-way valve 51 is opened, the first end B1 and the second end B2 of the first four-way valve 55 are connected, the third end B3 and the fourth end B4 are connected, and the second end C2 and the third end C3 of the second four-way valve 56 are connected. The first circulation pump 52 is not working, the second circulation pump 53 is working, and the third circulation pump 54 is not working. When the temperature control system operates in the heat pump preheating mode, the refrigerant circulation system 1 is in a heating state, and the electric two-way valve inside the dry cooler 6 is closed, the first two-way valve 51 is opened, and the second end B2 and the third end C3 of the first four-way valve 55 are connected. Terminal B3 is connected, first terminal B1 and fourth terminal B4 are connected, second terminal C2 and third terminal C3 of second four-way valve 56 are connected, first circulation pump 52 is working, second circulation pump 53 is working and third circulation pump 54 is not working; when the temperature control system is working in the preheating mode of the charger module, the refrigerant circulation system 1 is controlled to be in a non-working state, and the electric two-way valve inside the dry cooler 6 is controlled to be closed, first two-way valve 51 is opened, first terminal B1 and second terminal B2 of first four-way valve 55 are connected, third terminal B3 and fourth terminal B4 are connected, first terminal C1 and third terminal C3 of second four-way valve 56 are connected, first circulation pump 52 is not working, second circulation pump 53 is working and third circulation pump 54 is working; in the temperature control system When operating in the first cooling mode, the refrigerant circulation system 1 is in a non-operating state, and the electric two-way valve inside the dry cooler 6 is opened, the first two-way valve 51 is closed, the first end B1 and the second end B2 of the first four-way valve 55 are connected, the third end B3 and the fourth end B4 are connected, the first end C1 and the second end C2 of the second four-way valve 56 are connected, the third end C3 and the fourth end C4 are connected, the first circulation pump 52 is not working, the second circulation pump 53 is working, and the third circulation pump 54 is working; when the temperature control system operates in the second cooling mode, the refrigerant circulation system 1 is in a non-operating state, and the electric two-way valve inside the dry cooler 6 is opened, the first two-way valve 51 is closed, and the first end B1 of the first four-way valve 55 is closed. 1. The first two-way valve 51 is connected to the second end B2, the third end B3 and the fourth end B4 are connected, the first end C1 and the third end C3 of the second four-way valve 56 are connected, the first circulation pump 52 is not working, the second circulation pump 53 is working and the third circulation pump 54 is working; when the temperature control system is working in the third or fourth refrigeration mode, the refrigerant circulation system 1 is controlled to be in a refrigeration state, and the electric two-way valve inside the dry cooler 6 is controlled to open, the first two-way valve 51 is closed, the first end B1 and the second end B2 of the first four-way valve 55 are connected, the third end B3 and the fourth end B4 are connected, the first end C1 and the third end C3 of the second four-way valve 56 are connected, the first circulation pump 52 is working, the second circulation pump 53 is working and the third circulation pump 54 is working.

[0104] refer to Figure 3Optionally, the temperature control system also includes a three-way valve 29, a fourth circulation pump 30, and a second two-way valve; the second two-way valve is located in the control room 31 of the battery swapping station. Figure 6 This is a flowchart of another temperature control system control method provided in an embodiment of the present invention, see reference. Figure 6 The control method of this temperature control system includes:

[0105] S301. Determine the target operating mode of the temperature control system based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system.

[0106] S302. Determine the conduction status of the three-way valve, the fourth circulation pump, and the second two-way valve based on the number of battery packs in the battery compartment that are in a charging state, the control command received by the temperature control system, the relationship between the set temperature of the control room and the ambient temperature of the control room, and the relationship between the inlet water temperature of the battery compartment and the set temperature of the control room.

[0107] S303. Control the refrigerant circulation system to be in heating, cooling or non-operating state according to the target operating mode, and control the conduction state of the fluid control element.

[0108] The control method of the temperature control system provided in this embodiment of the invention is similar to the temperature control system, which can be referred to the description of the temperature control system for further explanation, and will not be repeated here.

[0109] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0110] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A temperature control system for a battery swapping station, characterized in that, include: Refrigerant circulation system, charger module, energy storage module, battery compartment and fluid control components; The battery compartment is connected to the refrigerant circulation system and the fluid control element, respectively, and the battery compartment is used to store the battery pack; The charger module is connected to the energy storage module and the refrigerant circulation system respectively. The charger module is used to charge the battery pack, and the energy storage module is used to store hot water. The fluid control element is used to exchange heat between the energy storage module and the battery compartment; The fluid control element is also used to form a circulation loop between the energy storage module and the refrigerant circulation system, and to exchange heat with the battery compartment; The fluid control element is also used to exchange heat between the charger module and the battery compartment; The temperature control system also includes a dry cooler, which is connected to the refrigerant circulation system and is used to exchange heat with the air. The fluid control components include a first two-way valve, a first circulating pump, a second circulating pump, a third circulating pump, a first four-way valve, and a second four-way valve; The first end of the first two-way valve is connected to the first end of the refrigerant circulation system and the first end of the dry cooler, respectively. The second end of the first two-way valve is connected to the second end of the dry cooler and the first end of the first circulation pump, respectively. The second end of the first circulation pump is connected to the second end of the refrigerant circulation system. The first end of the second circulation pump is connected to the second end of the first two-way valve, and the second end of the second circulation pump is connected to the second end of the first four-way valve. The first end of the first four-way valve is connected to the fourth end of the refrigerant circulation system, the third end of the first four-way valve is connected to the first end of the charger module, the fourth end of the first four-way valve is connected to the second end of the battery compartment, and the first end of the battery compartment is connected to the third end of the refrigerant circulation system. The first end of the third circulation pump is connected to the second end of the charger module, and the second end of the third circulation pump is connected to the first end of the second four-way valve; The second end of the second four-way valve is connected to the second end of the energy storage module, the third end of the second four-way valve is connected to the first end of the refrigerant circulation system, and the fourth end of the second four-way valve is connected to the first end of the charger module.

2. The temperature control system for the battery swapping station according to claim 1, characterized in that, The fluid control element is also used to form a circulation loop between the charger module, the energy storage module and the dry cooler, and to exchange heat with the battery compartment; The fluid control element is also used to form a circulation loop between the charger module and the dry cooler, and to exchange heat with the battery compartment; The fluid control element is also used to form a circulation loop between the charger module, the dry cooler and the refrigerant circulation system, and to exchange heat with the battery compartment.

3. The temperature control system for the battery swapping station according to claim 1, characterized in that, It also includes a three-way valve, a fourth circulation pump, and a second two-way valve; the second two-way valve is located in the control room of the battery swapping station. The first end of the three-way valve is connected to the first end of the battery compartment, the second end of the three-way valve is connected to the first end of the fourth circulation pump, the second end of the fourth circulation pump is connected to the first end of the second two-way valve, and the third end of the three-way valve is connected to the second end of the charger module. The second end of the second two-way valve is connected to the fourth end of the first four-way valve.

4. The temperature control system for the battery swapping station according to claim 1, characterized in that, The temperature control system also includes a water tank and a fifth circulating water pump; The water tank and the fifth circulating water pump are connected sequentially between the first end of the first four-way valve and the fourth end of the refrigerant circulation system. And / or, the temperature control system further includes a first exhaust valve and a first filter, a second exhaust valve and a second filter; The first exhaust valve and the first filter are connected in series between the first end of the refrigerant circulation system and the first end of the dry cooler. The second exhaust valve and the second filter are connected in series between the third end of the refrigerant circulation system and the first end of the battery compartment.

5. A control method for a temperature control system, characterized in that, The control method for the temperature control system according to any one of claims 1-4 includes: The target operating mode of the temperature control system is determined based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system. The refrigerant circulation system is controlled to be in heating mode or non-operating mode according to the target operating mode, and the conduction state of the fluid control element is controlled. The control commands include heating commands, and the target operating modes include energy storage module preheating mode, heat pump preheating mode, and charger module preheating mode.

6. The control method of the temperature control system according to claim 5, characterized in that, The control commands also include cooling commands, and the target operating modes also include a first cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode; The steps of controlling the refrigerant circulation system to be in heating mode or non-operating mode according to the target operating mode, and controlling the conduction state of the fluid control element, include: The refrigerant circulation system is controlled to be in heating, cooling or non-operating state according to the target operating mode, and the conduction state of the fluid control element is controlled.

7. The control method of the temperature control system according to claim 6, characterized in that, The step of determining the target operating mode of the temperature control system based at least on the number of battery packs in the battery compartment that are in a charging state and the control commands received by the temperature control system includes: When all N battery packs in the battery compartment are not in a charging state, the temperature control system receives the heating command, and the water temperature Tc of the energy storage module is greater than or equal to the set inlet water temperature Ts of the battery compartment and the inlet water temperature Tin_1 of the battery compartment is less than or equal to the set inlet water temperature Ts of the battery compartment - the first set value, the target operating mode is determined to be the preheating mode of the energy storage module. When all N battery packs in the battery compartment are not in a charging state, the temperature control system receives the heating command, and the water temperature Tc of the energy storage module is less than the set inlet water temperature Ts of the battery compartment and the water temperature Tc of the energy storage module is greater than or equal to the outlet water temperature Tg of the dry cooler + the second set value, the target operating mode is determined to be the heat pump preheating mode. When the number of battery packs in the charging state in the battery compartment is greater than 0 and less than N, the temperature control system receives the heating command, and the outlet water temperature Tout_1 of the charger module is greater than or equal to the set inlet water temperature Ts of the battery compartment and the inlet water temperature Tin_1 of the battery compartment is less than or equal to the set inlet water temperature Ts of the battery compartment - the first set value, the target operating mode is determined to be the preheating mode of the charger module. When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives the cooling command, and the outdoor ambient temperature Ta is less than the first preset temperature, and determines the target operating mode as the first cooling mode. When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives the cooling command, and when the first preset temperature ≤ outdoor ambient temperature Ta < the second preset temperature, the second cooling mode is run. When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives the cooling command, and the second preset temperature ≤ outdoor ambient temperature Ta < the third preset temperature, and runs the third cooling mode. When the number of battery packs in the battery compartment that are in a charging state is greater than 0 and less than or equal to N, the temperature control system receives the cooling command, and the outdoor ambient temperature Ta ≥ the third preset temperature, the fourth cooling mode is activated. Wherein, N is an integer greater than or equal to 2, the first preset temperature is less than the second preset temperature, and the second preset temperature is less than the third preset temperature.

8. The control method of the temperature control system according to claim 7, characterized in that, The temperature control system also includes a dry cooler, and the fluid control element includes a first two-way valve, a first circulating pump, a second circulating pump, a third circulating pump, a first four-way valve, and a second four-way valve. The steps of controlling the refrigerant circulation system to be in heating, cooling, or non-operating state according to the target operating mode, and controlling the conduction state of the fluid control element, include: When the temperature control system is working in the preheating mode of the energy storage module, the refrigerant circulation system is controlled to be in a non-working state, and the electric two-way valve inside the dry cooler is controlled to be closed, the first two-way valve is opened, the first and second ends of the first four-way valve are connected, the third and fourth ends are connected, the second and third ends of the second four-way valve are connected, the first circulation pump is not working, the second circulation pump is working, and the third circulation pump is not working. When the temperature control system is working in the heat pump preheating mode, the refrigerant circulation system is controlled to be in heating state, and the electric two-way valve inside the dry cooler is controlled to be closed, the first two-way valve is opened, the second and third ends of the first four-way valve are connected, the first end and the fourth end are connected, the second and third ends of the second four-way valve are connected, the first circulation pump is working, the second circulation pump is working, and the third circulation pump is not working. When the temperature control system is working in the preheating mode of the charger module, the refrigerant circulation system is controlled to be in a non-working state, and the electric two-way valve inside the dry cooler is controlled to be closed, the first two-way valve is opened, the first and second ends of the first four-way valve are connected, the third and fourth ends are connected, the first and third ends of the second four-way valve are connected, the first circulation pump is not working, the second circulation pump is working, and the third circulation pump is working. When the temperature control system is working in the first cooling mode, the refrigerant circulation system is controlled to be in a non-working state, and the electric two-way valve inside the dry cooler is controlled to open, the first two-way valve is closed, the first and second ends of the first four-way valve are connected, the third and fourth ends are connected, the first and second ends of the second four-way valve are connected, the third and fourth ends are connected, the first circulation pump is not working, the second circulation pump is working, and the third circulation pump is working. When the temperature control system is working in the second refrigeration mode, the refrigerant circulation system is controlled to be in a non-working state, and the electric two-way valve inside the dry cooler is controlled to open, the first two-way valve is closed, the first and second ends of the first four-way valve are connected, the third and fourth ends are connected, the first and third ends of the second four-way valve are connected, the first circulation pump is not working, the second circulation pump is working, and the third circulation pump is working. When the temperature control system is operating in the third or fourth refrigeration mode, the refrigerant circulation system is controlled to be in a refrigeration state, and the electric two-way valve inside the dry cooler is controlled to open, the first two-way valve is closed, the first and second ends of the first four-way valve are connected, the third and fourth ends are connected, the first and third ends of the second four-way valve are connected, the first circulation pump is working, the second circulation pump is working, and the third circulation pump is working.

9. The control method of the temperature control system according to claim 7, characterized in that, The temperature control system also includes a three-way valve, a fourth circulation pump, and a second two-way valve; the second two-way valve is located in the control room of the battery swapping station. The control method further includes: The conduction status of the three-way valve, the fourth circulation pump, and the second two-way valve is determined based on the number of battery packs in the battery compartment that are in a charging state, the control commands received by the temperature control system, the relationship between the set temperature of the control room and the ambient temperature of the control room, and the relationship between the inlet water temperature of the battery compartment and the set temperature of the control room.

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