Temperature control system of battery swap station and control method thereof

Abstract

The invention discloses a temperature control system of a battery swap station and a control method of the temperature control system. The system comprises a refrigerant circulating system, a charger module, an energy storage module, a battery compartment and a fluid control element, the battery compartment is respectively connected with the refrigerant circulating system and the fluid control element, and the battery compartment is used for storing a battery pack; the charger module is connected with the energy storage module and the refrigerant circulation system, the charger module is used for charging the battery pack, and the energy storage module is used for storing hot water; the fluid control element is used for exchanging heat between the energy storage module and the battery compartment; the fluid control element is further used for enabling the energy storage module and the refrigerant circulation system to form a circulation loop and exchanging heat with the battery bin. And the fluid control element is also used for exchanging heat between the charger module and the battery compartment. The energy consumption can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of temperature control technology, and in particular to a temperature control system of a battery swap station and a control method thereof. Background Art

[0002] With the development of new energy vehicles, battery swap stations for new energy vehicles have also gradually developed. The battery pack in the battery swap station needs to dissipate heat or provide heat when charging and discharging to ensure that the temperature of the battery cell is stable in the optimal operating temperature range to prevent the battery pack capacity and service life from decaying; the charger module will generate a lot of heat when working, and at this time, the charger module needs to be cooled to ensure its service life. For the above reasons, a temperature control system for the battery swap station is required to control the temperature of the battery pack and charger.

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

[0004] The present invention provides a temperature control system for a battery swap station and a control method thereof, which realizes effective utilization of waste heat, reduces additional energy input, and reduces energy consumption by performing heat exchange with a battery compartment and a refrigerant circulation system through a fluid control element.

[0005] In a first aspect, the present invention provides a temperature control system for a battery swap 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 respectively connected to the refrigerant circulation system and the fluid control element, and the battery compartment is used to store a battery pack; the charger module is respectively connected to the energy storage module and the refrigerant circulation system, 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 with 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 swap 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 with 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 with 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 with 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 circulation pump, a second circulation pump, a third circulation pump, a first four-way valve, and a second four-way valve; the first end of the first two-way valve is respectively connected to the first end of the refrigerant circulation system and the first end of the dry cooler, the second end of the first two-way valve is respectively connected to the second end of the dry cooler and the first end of the first circulation pump, and 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 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; 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, 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.

[0008] Optionally, the temperature control system of the battery swap station also includes a three-way valve, a fourth circulation pump and a second two-way valve; the second two-way valve is arranged in the control room of the battery swap 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.

[0009] Optionally, 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 in sequence 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 also 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 in sequence 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 in sequence between the third end of the refrigerant circulation system and the first end of the battery compartment.

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

[0011] Optionally, the control instruction also includes a cooling instruction, and the target operating mode also includes a first cooling mode, a second 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-working 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-working state according to the target operating mode, and controlling the conduction state of the fluid control element.

[0012] Optionally, according to the number of battery packs in a charging state in the battery compartment and the control instructions received by the temperature control system, the step of determining the target operating mode of 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 instruction, and the water temperature Tc of the energy storage module is ≥ the set water inlet temperature Ts of the battery compartment and the water inlet temperature Tin_1 of the battery compartment is ≤ the set water inlet temperature Ts of the battery compartment-a first set value, determining the target operating mode 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 instruction, and the water temperature Tc of the energy storage module is < the set water inlet 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 + a second set value, determining the target operating mode to be the heat pump preheating mode; when the number of battery packs in a charging state in the battery compartment is greater than 0 and less than N, the temperature control system receives a heating instruction, and the charging When the water outlet temperature Tout_1 of the charging module is ≥ the set water inlet temperature Ts of the battery compartment and the water inlet temperature Tin_1 of the battery compartment is ≤ the set water inlet temperature Ts of the battery compartment - the first set value, the target operation mode is determined to be the charging module preheating mode; when the number of battery packs in a charging state in the battery compartment is greater than 0 and less than or equal to N, the temperature control system receives a cooling instruction, and the outdoor ambient temperature Ta is less than the first preset temperature, the target operation mode is determined to be the first cooling mode; when the number of battery packs in a charging state in the battery compartment is greater than 0 and less than or equal to N, the temperature control system receives a cooling instruction, and the first preset temperature is ≤ the outdoor ambient temperature Ta is less than the second preset temperature, the second cooling mode is operated; when the number of battery packs in a charging state in the battery compartment is greater than 0 and less than or equal to N, the temperature control system receives a cooling instruction, and the second preset temperature is ≤ the outdoor ambient temperature Ta is less than the third preset temperature, the third cooling mode is operated;

[0013] When the number of battery packs in a charging state in the battery compartment 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 ≥ the third preset temperature, the fourth cooling mode is operated; 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.

[0014] Optionally, the temperature control system also includes a dry cooler, and the fluid control element includes a first two-way valve, a first circulation pump, a second circulation pump, a third circulation pump, a first four-way valve and a second four-way valve; the steps of controlling the refrigerant circulation system to be in a heating state, a cooling state or a non-working state according to the target operation mode, and controlling the conduction state of the fluid control element include: when the temperature control system operates in the energy storage module preheating 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 be closed, the first two-way valve is opened, the first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the second end and the third end of the second four-way valve are connected, and the first circulation pump is not connected. The first circulating pump works, the second circulating pump works, and the third circulating pump does not work; when the temperature control system works in the heat pump preheating mode, the refrigerant circulation system is controlled to be in a 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 end and the third end of the first four-way valve are connected, the first end and the fourth end are connected, the second end and the third end of the second four-way valve are connected, the first circulating pump works, the second circulating pump works, and the third circulating pump does not work; when the temperature control system works in the charger module preheating 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 be closed, the first two-way valve is opened, the first end and the second end of the first four-way valve are connected The first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the first end and the third end of the second four-way valve are connected, the first circulation pump does not work, the second circulation pump works, and the third circulation pump works; when the temperature control system works in the first 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 end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the first end and the second end of the second four-way valve are connected, the third end and the fourth end are connected, the first circulation pump does not work, the second circulation pump works, and the third circulation pump works; when the temperature control system works in the second refrigeration mode, the refrigerant circulation system is controlled to be in a non-working state, And control the electric two-way valve inside the dry cooler to open, the first two-way valve to close, the first end and the second end of the first four-way valve to be connected, the third end and the fourth end to be connected, the first end and the third end of the second four-way valve to be connected, the first circulation pump does not work, the second circulation pump to work, and the third circulation pump to work; when the temperature control system works in the third refrigeration mode or the fourth refrigeration mode, control the refrigerant circulation system to be in a refrigeration state, and control the electric two-way valve inside the dry cooler to open, the first two-way valve to close, the first end and the second end of the first four-way valve to be connected, the third end and the fourth end to be connected, the first end and the third end of the second four-way valve to be connected, the first circulation pump to work, the second circulation pump to work, and the third circulation pump to work.

[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 arranged in the control room of the battery swap station; the control method also includes: determining the conduction state of the three-way valve, the fourth circulation pump and the second two-way valve according to the number of battery packs in a charging state in the battery compartment, the control instructions 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 water inlet temperature of the battery compartment and the set temperature of the control room.

[0016] The temperature control system provided by the present 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 accurately distributed to where it is needed for heat exchange, avoiding energy waste and disorderly transfer. Secondly, the energy storage module stores hot water, and exchanges heat with the battery compartment and the refrigerant circulation system through the fluid control element, thereby achieving effective utilization of waste heat and reducing additional energy input. Finally, the connection between the charger module and the refrigerant circulation system and the heat exchange configuration with the battery compartment enable the heat generated during the charging process to be effectively utilized and managed, avoiding energy waste. In summary, through reasonable design, precise control and effective energy recovery and utilization, the temperature control system can achieve lower energy consumption.

[0017] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a temperature control system of a battery swap station provided by an embodiment of the present invention;

[0020] Figure 2 is a structural schematic diagram of a temperature control system of another battery swap station provided by an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of a temperature control system of another battery swap station provided by an embodiment of the present invention;

[0022] Figure 4 is a flow chart of a control method of a temperature control system provided by an embodiment of the present invention;

[0023] Figure 5 is a flow chart of another method for controlling a temperature control system provided by an embodiment of the present invention;

[0024] Figure 6 This is a flow chart of another method for controlling a temperature control system provided by an embodiment of the present invention.

[0025] Reference numerals:

[0026] 1-refrigeration cycle system; 11-first heat exchanger; 12-second heat exchanger; 13-compressor; 14-gas-liquid separator; 15-expansion valve; 16-four-way reversing valve; 17-drying filter;

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

[0028] 5-fluid control element; 51-first two-way valve; 52-first circulation pump; 53-second circulation pump; 54-third circulation pump; 55-first four-way valve; 56-second four-way valve;

[0029] 6-dry cooler; 61-condensing fan; 62-heat exchange coil;

[0030] B1 - the first end of the first four-way valve; B2 - the second end of the first four-way valve; B3 - the third end of the first four-way valve; B4 - the 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-the first end of the four-way reversing valve; A2-the second end of the four-way reversing valve; A3-the third end of the four-way reversing valve; A4-the fourth end of the four-way reversing valve;

[0033] 18-water tank; 19-fifth circulating water pump; 20-first exhaust valve; 21-first filter; 22-second exhaust 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 DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Figure 1 FIG. 1 is a schematic diagram of a temperature control system for a battery swap station provided by an embodiment of the present invention. Figure 1 As shown, the temperature control system of the battery swap 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] The fluid control element 5 is used to exchange heat between the energy storage module 3 and the battery compartment 4. The fluid control element 5 is used 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. The fluid control element 5 is used to exchange heat between the charger module 2 and the battery compartment 4.

[0040] Specifically, the refrigeration cycle system 1 may be a system including a compressor, and the refrigeration cycle system 1 has three working states, namely, a cooling state, a heating state, and a non-working state.

[0041] Optionally, the charger module 2 includes multiple chargers and multiple electric two-way valves, and the multiple chargers are connected to 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 elements.

[0042] In some embodiments, the temperature control system further includes a dry cooler 6, which is connected to the refrigerant circulation system 1, and the dry cooler 6 is used to achieve heat exchange with the air. Optionally, the dry cooler 6 includes a condensing fan 61, a heat exchange coil 62, and a plurality of electric two-way valves connected in series and parallel. Optionally, the dry cooler 6 also includes a frame, and the condensing fan 61 and the heat exchange coil 62 are both arranged in the frame. The condensing 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 swap station can send control instructions to the controller in the temperature control system. Exemplarily, assuming that the set temperature operating range of the battery pack is 10-35°C, the station control system detects the actual temperature T1 of the battery pack in real time. If the actual temperature T1 of the battery pack is within the range of 10-35°C, the cooling demand FC and the heating demand FH are 0, and the station control system does not send control instructions to the controller in the temperature control system. If the actual temperature T1 of the battery pack is greater than 35°C, the cooling demand FC = (T1-35) / Tpc*100%, and the station control system sends a cooling instruction to the controller in the temperature control system. If the actual temperature T1 of the battery pack is less than 10°C, the heating demand FH = (10-T1) / Tph*100%, and the station control system sends a heating instruction to the controller in the temperature control system. Wherein, Tpc is the cooling proportional coefficient, and Tph is the heating proportional coefficient. Exemplarily, Tpc = Tph = 2.

[0044] In some embodiments, the controller in the temperature control system determines the target operation mode based on at least the number of battery packs in the battery compartment 4 that are in a charging state and the received control instructions. The refrigerant cycle system 1 is controlled to be in a heating state or an off-working state according to the target operation mode, and the conduction state of the fluid control element 5 is controlled. The control instructions include heating instructions, and the target operation modes include energy storage module preheating mode, heat pump preheating mode, and charger module preheating mode.

[0045] Exemplarily, when the N battery packs in the battery compartment 4 are not in a charging state, the temperature control system receives a heating instruction, and the water temperature Tc of the energy storage module 3 ≥ the set water inlet temperature Ts of the battery compartment 4 and the water inlet temperature Tin_1 of the battery compartment 4 ≤ the set water inlet temperature Ts of the battery compartment 4 - the first set value, the target operation mode is determined to be the energy storage module preheating mode. Specifically, when the N battery packs in the 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 the charger module 2 is working, then the charger module 2 does not generate heat that can be used, and the function of the energy storage module 3 is to store hot water. At this time, the hot water of the energy storage module 3 can be used to meet the heating demand proposed by the station control system, but the preheating function of the energy storage module 3 needs to meet the water temperature Tc of the energy storage module 3 ≥ the set water inlet temperature Ts of the battery compartment 4 and the water inlet temperature Tin_1 of the battery compartment 4 ≤ the set water inlet temperature Ts of the battery compartment 4 - the first set value before it can be performed. Exemplarily, the station control system sends a heating instruction and the set water inlet temperature Ts of the battery compartment 4 is 18°C ​​to the temperature control system, and the first set value is 1°C. When the water temperature Tc of the energy storage module 3 is ≥18°C, the hot water of the energy storage module 3 can provide heating, so the condition that the water temperature Tc of the energy storage module 3 is ≥ the set water inlet temperature Ts of the battery compartment 4 needs to be met. Since the set water inlet temperature Ts of the battery compartment 4 is the target water inlet temperature, there will be a heating demand only when the water inlet temperature Tin_1 of the battery compartment 4 is < the set water inlet temperature Ts of the 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 the energy storage module 3 and the battery compartment 4.

[0046] When the N battery packs in the battery compartment 4 are not in a charging state, the temperature control system receives a heating command, and the water temperature Tc of the energy storage module 3 is less than the set water inlet temperature Ts of the battery compartment 4 and the water temperature Tc of the energy storage module 3 is greater than or equal to the water outlet temperature Tg of the dry cooler 6 + the second set value, the target operating mode is determined to be the heat pump preheating mode. When the energy storage module preheating mode is running, the hot water of the energy storage module 3 continuously supplies heat to the battery compartment 4, and the water temperature will drop until the water of the energy storage module 3 can no longer supply heat to the battery compartment 4. At this time, the heat pump preheating mode needs to be run, and the refrigerant circulation system 1 provides heat dissipation to heat the battery compartment 4, and cold water comes out of the refrigerant circulation system 1 after the heat exchange is completed. This part of cold water flows into the hot water returned by the energy storage module 3 and is mixed into warm water before the first two-way valve 51, and then flows into the energy storage module 3 to exchange heat with the hot water of the energy storage module 3. At this time, the water temperature of the energy storage module 3 needs to be higher than the outlet water temperature Tg of the dry cooler 6 in order to exchange heat and take away the cold generated by the heat exchanger in the refrigerant circulation system 1. The refrigerant circulation system 1 can work normally and the heat pump preheating mode can be carried out. When the temperature control system works in the heat pump preheating mode, the fluid control element 5 is configured to form a circulation loop with the energy storage module 3 and the refrigerant circulation system 1, and to exchange heat with the battery compartment 4. The embodiment of the present invention does not specifically limit the size of the second set value, and it can be set according to actual needs. Exemplarily, the second set value may be 2°C.

[0047] When the number of battery packs in the battery compartment 4 that are in the charging state is greater than 0 and less than N, the temperature control system receives a heating instruction, and the outlet water temperature Tout_1 of the charger module 2 is ≥ the set inlet water temperature Ts of the battery compartment 4 and the inlet water temperature Tin_1 of the battery compartment 4 is ≤ the set inlet water temperature Ts of the battery compartment 4-the first set value, the target operation mode is determined to be the charger module preheating mode. When the station control system sends a heating instruction to the temperature control system, and the number of battery packs working is 0<n<N, that is, some chargers in the charger module 2 are working, the heat generated by these chargers can be used, and the water flowing through the charger will be heated, and the heated water can be provided to other battery packs that are not in the charging state for heating. Exemplarily, the station control system sends a heating instruction and the set inlet water temperature Ts of the battery compartment 4 is 18℃ to the temperature control system. When the outlet water temperature Tc of the charger module 2 is ≥18℃, the hot water of the charger module 2 can provide heating, so the outlet water temperature Tout_1 of the charger module 2 is required to be ≥ the set inlet water temperature Ts of the battery compartment. Since the set water inlet temperature Ts of the battery compartment 4 is the target water inlet temperature, heating is required only when the water inlet temperature Tin_1 of the battery compartment 4 is less than the set water inlet temperature Ts of the battery compartment 4. When the temperature control system operates 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 by the embodiment of the present 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 accurately distributed to where it is needed for heat exchange, thereby avoiding energy waste and disorderly transfer. Secondly, the energy storage module stores hot water, and exchanges heat with the battery compartment and the refrigerant circulation system through the fluid control element, thereby achieving effective utilization of waste heat and reducing additional energy input. Finally, the connection between the charger module and the refrigerant circulation system and the heat exchange configuration with the battery compartment enable the heat generated during the charging process to be effectively utilized and managed, thereby avoiding energy waste. In summary, through reasonable design, precise control and effective energy recovery and utilization, the temperature control system can achieve lower energy consumption.

[0049] Continue to refer Figure 1 Optionally, 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.

[0050] The fluid control element 5 is also used to form a circulation loop with 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 with the charger module 2 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 with 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 operation mode includes a first cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode.

[0052] Exemplarily, when the number of battery packs in a 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 instruction, and the outdoor ambient temperature Ta is less than the first preset temperature, the target operation mode is determined to be the first cooling mode. When the number of battery packs in a 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 instruction, and the first preset temperature ≤ the outdoor ambient temperature Ta < the second preset temperature, the second cooling mode is operated. When the number of battery packs in a 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 instruction, and the second preset temperature ≤ the outdoor ambient temperature Ta < the third preset temperature, the third cooling mode is operated. When the number of battery packs in a 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 instruction, and the outdoor ambient temperature Ta ≥ the third preset temperature, the fourth cooling mode is operated. 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.

[0053] Specifically, the embodiment of the present invention does not specifically limit the values ​​of the first preset temperature, the second preset temperature and the third preset temperature, and can be set according to actual needs. For example, the first preset temperature can be -5°C, the second preset temperature can be 0°C, and the third preset temperature can be 5°C.

[0054] When the temperature control system works in the first cooling mode, the fluid control element 5 is configured to form a circulation loop with the charger module 2, the energy storage module 3 and the dry cooler 6, and exchange heat with the battery compartment 4. At this time, the refrigerant circulation system 1 is not running, and only the dry cooler 6 is used to transfer the coldness of the outdoor environment and the heat of the battery pack for heat exchange. At the same time, the hot water after heat exchange through the charger module 2 can be circulated for heat exchange and stored in the energy storage module 3. By adjusting the speed of the condensing fan 61 in the dry cooler 6, the cooling capacity of the temperature control system can be adjusted.

[0055] When the temperature control system works in the second cooling mode, the fluid control element 5 is configured to form a circulation loop with 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 is not running, and only the dry cooler 6 is used to transfer the coldness of the outdoor environment and the heat of the battery pack to exchange heat, so that the temperature of the water that finally flows to the battery compartment 4 meets the set water inlet temperature of the battery compartment 4. At this time, the refrigerant circulation system 1 does not need to be turned on for cooling to exchange heat with water, so as to reduce power consumption.

[0056] When the temperature control system works in the third cooling mode, the fluid control element 5 is configured to form a circulation loop with 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 works in a cooling state, and the dry cooler 6 and the refrigerant circulation system 1 serve together as a cold source for the current heat exchange.

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

[0058] Figure 2 FIG. 1 is a schematic diagram of the structure of another temperature control system of a battery swap station provided by an embodiment of the present invention. Figure 2 As shown, the fluid control element 5 includes a first two-way valve 51 , a first circulation pump 52 , a second circulation pump 53 , a third circulation 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 refrigeration cycle 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 refrigeration cycle 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, and 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, and 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, and the fourth end of the second four-way valve 56 is connected to the first end of the charger module 2.

[0061] Optionally, the refrigeration cycle 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 drying filter 17 .

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

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

[0064] The second end of the four-way reversing valve 16 is connected to the inlet of the refrigerant side of the first heat exchanger 11, and the fourth end of the four-way reversing valve 16 is connected to the outlet of the refrigerant side 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 works in a heating state or a cooling state. The first end of the expansion valve 15 is connected to the second end of the drying filter 17, and the second end of the expansion valve 15 is connected to the inlet of the refrigerant side of the second heat exchanger 12, and the first end of the drying filter 17 is connected to the outlet of the refrigerant side of the first heat exchanger 11.

[0065] Specifically, the embodiment of the present invention does 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 a shell and tube heat exchanger, or a plate heat exchanger. The first heat exchanger 11 and the second heat exchanger 12 are used as a condenser or an evaporator.

[0066] The gas-liquid separator 14 can prevent excessive liquid from flowing back into the compressor 13, reduce the probability of liquid hammer in the compressor 13, reduce the failure rate of the compressor 13, and extend the service life of the compressor 13. The dry filter 17 can absorb moisture in the refrigerant circuit, block impurities in the refrigerant circuit so that they cannot pass through, and prevent the refrigerant circuit pipeline from being blocked.

[0067] When the refrigerant cycle system 1 is working in the refrigeration state, the first heat exchanger 11 serves as a condenser and the second heat exchanger 12 serves as an evaporator. Low-temperature and low-pressure refrigerant enters the compressor 13, which compresses the refrigerant into high-temperature and 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, so that the superheated vapor refrigerant gradually becomes saturated vapor refrigerant, and then condenses and releases heat to become saturated liquid refrigerant. The liquid refrigerant throttled and depressurized by the expansion valve 15 enters the second heat exchanger 12 again, exchanges heat with the water side of the second heat exchanger 12, evaporates and absorbs heat to become low-temperature and low-pressure vapor refrigerant, and 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 then returns to the second end of the compressor 13, and the reciprocating cycle is repeated to achieve refrigeration.

[0068] When the refrigerant cycle system 1 is working in the heating state, the first heat exchanger 11 serves as an evaporator and the second heat exchanger 12 serves as a condenser. Low-temperature and low-pressure vapor refrigerant enters the compressor 13, which compresses the refrigerant into high-temperature and 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 fourth end A4 of the four-way reversing valve 16 and enters the second heat exchanger 12 to exchange heat with the water side, so that the superheated vapor refrigerant is cooled into saturated vapor refrigerant, and then condenses and releases heat to become saturated liquid refrigerant. The liquid refrigerant throttled and depressurized by the expansion valve 15 enters the first heat exchanger 11 again to exchange heat with the water side, evaporates and absorbs heat to become low-temperature and low-pressure vapor refrigerant, and then enters the gas-liquid separator 14 through the second end A2 and the third end A3 of the four-way reversing valve 16 for gas-liquid separation, and then returns to the second end of the compressor 13, and the reciprocating cycle is repeated to achieve heating.

[0069] Continue to refer Figure 2Optionally, the temperature control system further 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 further includes a first exhaust valve 20 and a first filter 21, a second exhaust valve 22 and a second filter 23. The first exhaust 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 exhaust 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 water tank. Since water has the phenomenon of thermal expansion and contraction, the water after heat exchange can be buffered by providing the water tank 18 and the fifth circulating water pump 19, further improving the energy-saving effect of the temperature control system. The first exhaust valve 20 and the second exhaust valve 22 can discharge the air that may be mixed in the first heat exchanger 11 and the second heat exchanger 12 in actual work, ensuring that the coolant can flow stably in the first heat exchanger 11 and the second heat exchanger 12. The first filter 21 and the second filter 23 can block impurities in the water path to prevent impurities from clogging the first heat exchanger 11, the second heat exchanger 12, the dry cooler 6 and the battery compartment 4, causing poor heat exchange and system failure.

[0071] Optionally, the temperature control system further 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. Among them, the first temperature sensor 24, the second temperature sensor 25, the third temperature sensor 26, the fourth temperature sensor 27 and the fifth temperature sensor 28 are all connected to the controller in the temperature control system.

[0072] Continue to refer Figure 2 The working principle of the temperature control system of the battery swap station provided by the embodiment of the present invention is:

[0073] When the temperature control system works in the energy storage module preheating mode, the refrigerant circulation system 1 is controlled to be in an inoperative state, and the electric two-way valve inside the dry cooler 6 is controlled to be 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, the second end C2 and the third end C3 of the second four-way valve 56 are connected, the first circulation pump 52 does not work, the second circulation pump 53 works, and the third circulation pump 54 does not work. The second circulation pump 53 works to circulate the hot water in the energy storage module 3, and the hot water flows into the battery pack in the battery compartment 4 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 water pump 19, the second heat exchanger 12 and the second filter 23 in sequence to provide heat exchange, and then flows through the first four-way valve 55 after the heat exchange is completed, and finally flows back to the energy storage module 3 for recirculation and heat exchange.

[0074] When the temperature control system works in the heat pump preheating mode, the refrigerant circulation system 1 is controlled to be in a heating state, and the electric two-way valve inside the dry cooler 6 is controlled to be closed, the first two-way valve 51 is opened, the second end B2 and the third end B3 of the first four-way valve 55 are connected, the first end B1 and the fourth end B4 are connected, the second end C2 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 not working. The first heat exchanger 11 is now used as an evaporator, and the cold water flowing out after the heat exchange is completed in it is mixed with the hot water coming back from the energy storage module 3 before the first two-way valve 51, and circulated through the first circulation pump 52 and the second circulation pump 53 to flow in two ways. One is to directly circulate the mixed warm water back to the first heat exchanger 11 by the first circulation pump 52 for heat exchange, and the other is to circulate through the first four-way valve 55 by the second circulation pump 53 into the energy storage module 3, mix with the hot water in the energy storage module 3 for heat exchange, and then flow through the second four-way valve 56 to mix with the cold water exchanged from the first heat exchanger 11 before the first two-way valve 51. The second heat exchanger 12 is now used as a condenser, and the hot water that has completed the heat exchange in it is circulated to the battery pack through the fifth circulation pump 19 to provide heat exchange, and after the heat exchange is completed, it 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.

[0075] When the temperature control system works in the charger module preheating mode, the refrigerant circulation system 1 is controlled to be in a non-operating state, and the electric two-way valve inside the dry cooler 6 is controlled to be 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, 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 second circulation pump 53 and the third circulation pump 54 are working to circulate the hot water that has completed the heat exchange in the charger module 2, and pass 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, the second filter 23 in sequence, and finally flow into the battery compartment 4 to exchange heat with the battery compartment 4. After the heat exchange is completed, it passes through the first four-way valve 55 and flows back to the charger module 2 for re-circulation and heat exchange.

[0076] When the temperature control system works in the first cooling mode, the refrigerant circulation system 1 is controlled to be in a non-operating state, and the electric two-way valve inside the dry cooler 6 is controlled to be 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 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. The cold water that completes the heat exchange in the dry cooler 6 flows 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 in sequence, and then flows into the battery pack in the battery compartment 4 for heat exchange and cooling. The warm water flows through the first four-way valve 55 and is divided into two paths. One path flows through the bypass pipe in front of the charger module 2, flows through the second four-way valve 56, and finally flows into the dry cooler 6 to cool it into cold water for recirculation and heat exchange; the other path flows into the charger module 2 to dissipate heat for the charger. The hot water coming out of the charger module 2 is circulated back to the energy storage module 3 through the third circulation pump 54, and then flows back to the charger module 2. During this period, the water in the energy storage module 3 is continuously stored and heated. When the water temperature Tc of the energy storage module is ≥ the fourth preset temperature, the third circulation pump 54 stops working and the energy storage module 3 completes energy storage. It can be understood that the value of the fourth preset temperature can be set according to actual needs, and the embodiment of the present invention is not limited to this. Exemplarily, the fourth preset temperature can be 55°C.

[0077] When the temperature control system works in the second cooling mode, the refrigerant circulation system 1 is controlled to be in a non-operating state, and the electric two-way valve inside the dry cooler 6 is controlled to be 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 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 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 in sequence, and then flows into the battery pack in the battery compartment 4 for heat exchange and cooling. The warm water flows through the first four-way valve 55 and then flows into the charger module 2 to dissipate heat for the charger. The hot water from the charger module 2 is circulated back to the dry cooler 6 through the third circulation pump 54 to cool it into cold water and circulate again for heat exchange.

[0078] When the temperature control system operates in the third refrigeration mode or the 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 be 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 the heat exchange in the first heat exchanger 11 is mixed with the hot water returned from the charger module 2 and then dissipated heat and cooled into cold water through the dry cooler 6. It flows out of the dry cooler 6 in two ways. One path 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 further exchanges heat through the second heat exchanger 12 to become cold water with a lower temperature, and flows into the battery pack for heat exchange and cooling. The warm water from the battery pack further flows into the charger module 2 through the first four-way valve 55 to dissipate heat and cool it. The hot water from the charger module 2 circulates back to the dry cooler 6 through the third circulation pump 54 to be cooled into cold water and circulates for heat exchange again; the other path of cold water circulates back to the first heat exchanger 11 through the first circulation pump 52 to circulate heat exchange again.

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

[0080] Figure 3 FIG. 1 is a schematic diagram of the structure of another temperature control system of a battery swap station provided by an embodiment of the present invention. Figure 3 As shown, optionally, the temperature control system of the battery swap 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 arranged in the control room 31 of the battery swap 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 states of the three-way valve 29, the fourth circulation pump 30 and the second two-way valve are determined according to the number of battery packs in a charging state in the battery compartment 4, the control instructions received by the temperature control system, the relationship between the set temperature Tk of the control room 31 and the ambient temperature Tn of the control room 31, and the relationship between the water inlet temperature Tin_1 of the battery compartment 4 and the set temperature Tk of the control room 31.

[0082] When the battery packs in the battery compartment 4 are not in a charging state, the station control system sends a heating command to the temperature control system, and the set temperature Tk of the control room 4-the ambient temperature Tn of the control room 4 ≥ 1°C and the water inlet temperature Tin_1 of the battery compartment 4 ≥ 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 water valve in the control room 31 is opened, and the fourth circulation pump 30 works to circulate hot water into the control room 31 for heat exchange. If the target operation mode of the temperature control system is the energy storage module preheating mode at this time, the water after the heat exchange passes through the first four-way valve 55 again, and finally flows back to the energy storage module 3 for recirculation and heat exchange. If the target operation mode of the temperature control system is the heat pump preheating mode at this time, the water after the heat exchange passes through the first four-way valve 55 and the water tank 18 again, and finally flows back to the second heat exchanger 12 for recirculation and heat exchange.

[0083] When the battery packs in the battery compartment are not in a charging state, the station control system sends a heating command to the temperature control system, and when the ambient temperature Tn of the control room - the set temperature Tk of the control room ≥ 1°C or the water inlet temperature Tin_1 of the battery compartment < 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 shut down.

[0084] When some battery packs in the battery compartment are in a charging state and the number of charged battery packs is not greater than the total number of battery packs, that is, 0<n<N, the station control system sends a heating instruction to the temperature control system, and the set temperature Tk of the control room 31-the ambient temperature Tn of the control room ≥1°C and the outlet water temperature Tout_1 of the charger module 2 ≥ the set temperature Tk of the control room 31, the second end C2 and the third end C3 of the three-way valve 29 are connected, the electric two-way water valve in the control room 31 is opened, and the fourth circulation pump 30 works to circulate hot water into the control room 31 for heat exchange. After the heat exchange is completed, it passes through the first four-way valve 55 and flows back to the charger module 2 for recirculation and heat exchange; when the ambient temperature Tn of the control room 31-the set temperature Tk of the control room 31 ≥1°C or the outlet water temperature Tout_1 of the charger module 2 < 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 is shut down.

[0085] 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, that is, 0<n≤N, the station control system sends a cooling command to the temperature control system, and the set temperature Tk of the control room 31-the ambient temperature Tn of the control room 31≥1℃ and the outlet water temperature Tout_1 of the charger module 2≥the set temperature Tk of the control room 31, 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 opened, and the fourth circulation pump 30 works to circulate hot water into the control room 31 for heat exchange. After the heat exchange, the water passes through the first four-way valve 55 and flows back to the charger module 2 for recirculation and heat exchange.

[0086] When the number of battery packs in a charging state in the battery compartment is greater than 0 or all batteries are in a charging state, that is, 0<n≤N, the station control system sends a cooling command to the temperature control system, and the ambient temperature Tn of the control room 31-the set temperature Tk of the control room 31 ≥1°C or the water outlet 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 is shut down.

[0087] Based on the same inventive concept, the present invention also provides a method for controlling a temperature control system to control the temperature control systems provided by the above embodiments. Figure 4 is a flow chart of a control method of a temperature control system provided by an embodiment of the present invention, with reference to Figure 1 and Figure 4 , the control method of the temperature control system includes:

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

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

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

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

[0092] When the number of battery packs in a 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 water outlet temperature Tout_1 of the charger module 2 is ≥ the set water inlet temperature Ts of the battery compartment 4 and the water inlet temperature Tin_1 of the battery compartment 4 is ≤ the set water inlet temperature Ts of the battery compartment 4 - the first set value, the target operating mode is determined to be the charger module preheating mode.

[0093] S102: Control the refrigerant cycle system to be in a heating state or an off-operation state according to the target operation mode, and control the conduction state of the fluid control element.

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

[0095] The control instruction also includes a cooling instruction, and the target operation mode also includes a first cooling mode, a second cooling mode, a second cooling mode, a third cooling mode and a fourth cooling mode. Figure 5 is a flow chart of another method for controlling a temperature control system provided by an embodiment of the present invention, with reference to Figure 5 , the control method of the temperature control system includes:

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

[0097] When the number of battery packs in a 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 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 a charging state in the battery compartment is greater than 0 and less than or equal to N, the temperature control system receives a cooling command, and the first preset temperature ≤ the outdoor ambient temperature Ta < the second preset temperature, the second cooling mode is operated.

[0099] When the number of battery packs in a 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 instruction, and the second preset temperature ≤ the outdoor ambient temperature Ta < the third preset temperature, and operates the third cooling mode.

[0100] When the number of battery packs in a 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 the outdoor ambient temperature Ta≥the third preset temperature, the fourth cooling mode is operated; 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.

[0101] S202: Control the refrigerant cycle system to be in a heating state, a cooling state or an off-state according to the target operation 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 circulation pump 52, a second circulation pump 53, a third circulation pump 54, a first four-way valve 55 and a second four-way valve 56.

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

[0104] refer to Figure 3Optionally, the temperature control system further includes a three-way valve 29, a fourth circulation pump 30 and a second two-way valve; the second two-way valve is arranged in a control room 31 of the battery swap station. Figure 6 is a flow chart of another method for controlling a temperature control system provided by an embodiment of the present invention, with reference to Figure 6 , the control method of the temperature control system includes:

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

[0106] S302. Determine the conduction state of the three-way valve, the fourth circulation pump and the second two-way valve according to the number of battery packs in a charging state in the battery compartment, the control instructions 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 water inlet temperature of the battery compartment and the set temperature of the control room.

[0107] S303, controlling the refrigerant cycle system to be in a heating state, a cooling state or an off-state according to the target operation mode, and controlling the conduction state of the fluid control element.

[0108] The similarities between the control method of the temperature control system provided in the embodiment of the present invention and the temperature control system can be explained with reference to the description of the temperature control system, which will not be repeated here.

[0109] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0110] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature control system for a battery swap 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 a 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 with 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.

2. The temperature control system of the battery swap station according to claim 1, characterized in that: It also includes a dry cooler, which is connected to the refrigerant circulation system and is used to achieve heat exchange with air; The fluid control element is also used to form a circulation loop with 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 with 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 with the charger module, the dry cooler and the refrigerant circulation system, and to exchange heat with the battery compartment.

3. The temperature control system of the battery swap station according to claim 2, characterized in that: The fluid control element includes a first two-way valve, a first circulation pump, a second circulation pump, a third circulation 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; and 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.

4. The temperature control system of the battery swap station according to claim 3, 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 arranged in the control room of the power 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.

5. The temperature control system of the battery swap station according to claim 3, 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 in sequence 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 comprises 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 sequentially 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 sequentially connected in series between the third end of the refrigerant circulation system and the first end of the battery compartment.

6. A method for controlling a temperature control system, characterized in that: For the temperature control system according to any one of claims 1 to 5, the control method comprises: determining a target operating mode of the temperature control system based at least on the number of battery packs in a charged state in the battery compartment and the control instructions received by the temperature control system; Controlling the refrigerant cycle system to be in a heating state or an off-operation state according to the target operation mode, and controlling the conduction state of the fluid control element; The control instruction includes a heating instruction, and the target operation mode includes an energy storage module preheating mode, a heat pump preheating mode and a charger module preheating mode.

7. The control method of the temperature control system according to claim 6, characterized in that: The control instruction further includes a cooling instruction, and the target operation mode further includes a first cooling mode, a second cooling mode, a second cooling mode, a third cooling mode, and a fourth cooling mode; The step of controlling the refrigerant cycle system to be in a heating state or an off-operation state according to the target operation mode and controlling the conduction state of the fluid control element comprises: The refrigerant cycle system is controlled to be in a heating state, a cooling state or an off-operation state according to the target operation mode, and the conduction state of the fluid control element is controlled.

8. The control method of the temperature control system according to claim 7, characterized in that: The step of determining the target operation mode of the temperature control system at least according to the number of battery packs in the battery compartment in a charged state and the control instruction received by the temperature control system comprises: When the N battery packs in the battery compartment are not in a charging state, the temperature control system receives the heating instruction, and the water temperature Tc of the energy storage module ≥ the set water inlet temperature Ts of the battery compartment and the water inlet temperature Tin_1 of the battery compartment ≤ the set water inlet temperature Ts of the battery compartment - the first set value, it is determined that the target operation mode is the energy storage module preheating mode; When the N battery packs in the battery compartment are not in a charging state, the temperature control system receives the heating instruction, and the water temperature Tc of the energy storage module is less than the set water inlet temperature Ts of the battery compartment and the water temperature Tc of the energy storage module is greater than or equal to the water outlet temperature Tg of the dry cooler + a second set value, the target operation 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 the heating instruction, and the outlet water temperature Tout_1 of the charger module ≥ the set inlet water temperature Ts of the battery compartment and the inlet water temperature Tin_1 of the battery compartment ≤ the set inlet water temperature Ts of the battery compartment - the first set value, it is determined that the target operation mode is 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 instruction, and the outdoor ambient temperature Ta is less than the first preset temperature, determining that the target operation mode is 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 instruction, and the first preset temperature ≤ the outdoor ambient temperature Ta < 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 the cooling instruction, and the second preset temperature ≤ the outdoor ambient temperature Ta < the third preset temperature, the third 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 the cooling instruction, and the outdoor ambient temperature Ta ≥ the third preset temperature, the fourth cooling mode is operated; Wherein, N is an integer greater than or equal to 2, the first preset temperature is lower than the second preset temperature, and the second preset temperature is lower than the third preset temperature.

9. The control method of the temperature control system according to claim 8, characterized in that: The temperature control system further includes a dry cooler, and the fluid control element includes a first two-way valve, a first circulation pump, a second circulation pump, a third circulation pump, a first four-way valve and a second four-way valve; The step of controlling the refrigerant cycle system to be in a heating state, a cooling state or an off-state according to the target operation mode and controlling the conduction state of the fluid control element comprises: When the temperature control system works in the energy storage module preheating 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 be closed, the first two-way valve is opened, the first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the second end and the third end 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 works in the heat pump preheating mode, the refrigerant circulation system is controlled to be in a 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 end and the third end of the first four-way valve are connected, the first end and the fourth end are connected, the second end and the third end 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 works in the charger module preheating 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 be closed, the first two-way valve is opened, the first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the first end and the third end 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 works in the first 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 be opened, the first two-way valve is closed, the first end and the second end of the first four-way valve are connected, and the third end and the fourth end are connected, the first end and the second end of the second four-way valve are connected, and the third end and the fourth end 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 works 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 be opened, the first two-way valve is closed, the first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the first end and the third end 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 operates in the third refrigeration mode or the 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 be opened, the first two-way valve is closed, the first end and the second end of the first four-way valve are connected, the third end and the fourth end are connected, the first end and the third end 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.

10. The control method of the temperature control system according to claim 8, characterized in that: The temperature control system further includes a three-way valve, a fourth circulation pump and a second two-way valve; the second two-way valve is arranged in the control room of the battery swap station; The control method further comprises: The conduction states of the three-way valve, the fourth circulation pump and the second two-way valve are determined according to the number of battery packs in a charging state in the battery compartment, the control instructions 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 water inlet temperature of the battery compartment and the set temperature of the control room.

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