Control method and control system for thermal regulation of charging and swapping stations

Abstract

The present invention relates to a control method for thermal regulation of a charging and swapping station and a control system thereof, which includes the following steps: Step 1: starting the main circulation system and the tank circulation system of the charging and swapping station; Step 2: determining the cold and hot values ​​of the compressor cold and hot production system of the specific charging and swapping station according to the total demand instruction value; Step 3: collecting the battery parameters of the BMS based on the CAN network to realize thermal regulation control of the charging and swapping station. The present invention unifies the ambient temperature management and thermal regulation of the battery in the station, switches between compressor heating and auxiliary heating according to different outdoor temperatures, and avoids waste of power resources; realizes the optimization of thermal regulation strategy, improves the level of precise management of battery charging, avoids the problem of heat control during charging, and improves charging efficiency; simplifies the system structure, and effectively avoids the frequent start-stop switching of the compressor operation when in the critical state between heating mode and circulation mode, and in the critical state between cooling mode and circulation mode.

Description

Technical Field

[0001] The present application relates to the field of charging and swapping station operation, and specifically to a control method and control system for thermal regulation of a charging and swapping station. Background Art

[0002] At present, many battery-swap vehicles have no water cooling system for their battery boxes, which restricts the performance of the vehicles. In order to adapt to the complex climatic environment, battery-swap vehicles with liquid-cooled connectors are gradually being promoted. Frequent battery swaps are required, but the charging heat regulation system of the battery pack in the battery swap station is not perfect. Many still use the original idea of ​​the liquid cooling unit, connecting the battery box to the pipeline system of the liquid cooling unit, and the hot air or cold air is directly emitted into the station, or appropriately led out of the station, which directly affects the temperature inside the station. The independently installed air-conditioning system re-cools or dissipates the indoor air, and releases the negative temperature impact of the room temperature brought by the liquid cooling unit to the outside of the station through heat exchange, which brings energy waste to the thermal regulation of the charging and swap station.

[0003] Thermal regulation of the battery box during charging can also be problematic. Different battery boxes have different initial charging capacities and temperatures, making unified management difficult. Without appropriate strategies and methods, thermal regulation during charging becomes increasingly difficult, impacting charging efficiency. Therefore, how to coordinate and balance the thermal regulation of each battery box has become an urgent issue to be addressed.

[0004] Furthermore, in a cold environment, the temperature will fluctuate in different ranges. Using auxiliary heat alone consumes a lot of energy. Switching between compressor heating and auxiliary heat or using them in combination according to different outdoor temperatures to save energy is also an urgent problem to be solved. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a control method and control system for thermal regulation of charging and swapping stations, which unify the ambient temperature regulation in the station and the thermal regulation of the battery, and switch between compressor heating and auxiliary heating according to different outdoor temperatures to avoid waste of power resources; optimize the thermal regulation strategy, improve the accurate measurement of battery charging, avoid the problem of heat control during charging, and improve charging efficiency; simplify the system structure, and effectively avoid frequent start-stop switching of the compressor operation when in the critical state of heating mode and circulation mode, and in the critical state of cooling mode and circulation mode.

[0006] To achieve the above objectives, the solution adopted by the present invention is to provide a control method for thermal regulation of a charging and swapping station, which includes the following steps:

[0007] Step 1: Start the main circulation system and tank circulation system of the charging and swapping station;

[0008] The main circulation system D is started. The main circulation system D switches the working mode according to the average temperature threshold of all rechargeable battery boxes. The method for obtaining the average temperature threshold of all rechargeable battery boxes is as follows:

[0009]

[0010] Where: T ZP Indicates the average temperature threshold of all rechargeable battery boxes; T P1 Indicates the average temperature of the battery box during the first charge; T Pi represents the average temperature of the battery box during charging of the i-th battery; T Pn Indicates the average temperature of the nth battery box being charged; i indicates the number of the battery box being charged; n indicates the number of battery boxes being charged;

[0011] When the main circulation system D is started, set the total pump speed V of the circulation system Z ,as follows:

[0012] V Z =(H1+…+H j +…+H m )·V;

[0013] Where: V Z Indicates the total pump speed of the circulation system; H1 indicates the state of the first external liquid flow valve; H j Indicates the state of the j-th external liquid flow valve; H m Indicates the status of the mth external liquid flow valve; V represents the required speed when a single battery box starts the water pump; j represents the number of the external liquid flow valve of the circulation system; m represents the number of external liquid flow valves of the circulation system;

[0014] Start the box circulation system X, and according to the specific parameter status of each battery box, start the corresponding box circulation mode respectively;

[0015] Step 2: Determine the cooling and heating value of the compressor cooling and heating production system of the specific charging and swapping station based on the total demand instruction value;

[0016] The method for obtaining the total demand instruction value M for heating and cooling of the battery box is as follows:

[0017] M=Q1+…+Q k +…+Q P ,k∈(1,2,…,P);

[0018] Where: M represents the total demand instruction value for heating and cooling of the battery box; Q1 represents the demand instruction value for the heating and cooling mode of the first battery box; Q k Indicates the hot and cold mode command value required by the kth battery box; Q prepresents the hot and cold mode command value required by the p-th battery box; k represents the battery box number; P represents the total number of hot and cold mode command values ​​required by the battery box;

[0019] When M < 0, M = 0, M > 0, the corresponding compressor power demand is cooling, stop, and heating working modes respectively;

[0020] By analyzing the refrigeration working mode, the compressor refrigeration power demand of the cold and hot production system C is obtained as follows:

[0021]

[0022] Where: P 需冷 represents the compressor cooling power demand of the cold and hot production system C; P A冷 represents the cooling demand of indoor temperature control exchange system A; P B冷 Indicates the cooling demand of the battery box temperature control exchange system B in the station; K 冷 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 冷 Greater than 1; P 箱冷 Indicates the cooling power requirement of a single battery box; ΔT 冷 Indicates the inlet and outlet temperatures during cooling at time t 标 C represents the specific heat capacity per unit mass of the coolant; ρ represents the coolant density; V represents the flow meter value L0 at time t 标 The coolant volume measured inside; t 标 Indicates a standard time;

[0023] By analyzing the heating working mode, the heating power demand of the compressor of the cooling and heating production system C is obtained as follows:

[0024]

[0025] Where: P 需热 represents the heat power demand of the compressor of the cold and heat production system C; P B热 Indicates the heating demand of the battery box temperature control exchange system B in the station; P RB Indicates that the auxiliary heating function is turned on, P RB Greater than 0; K 热 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 热 Greater than 1; P X热 Indicates the total heating power demand of all battery boxes; ΔT 热 Indicates the inlet and outlet temperatures during heating at time t 标 The difference within

[0026] Step 3: Collect battery parameters of the BMS based on the CAN network to achieve thermal regulation control of the charging and swapping station;

[0027] Obtain the average temperature threshold T of all charging battery boxes in Step 1 ZP , and start the working mode of the compressor according to the size of the average temperature threshold T of the charging battery box, and respectively activate the corresponding box circulation mode according to the specific parameter status of each battery box; Obtain the total demand command value M of the heating and cooling modes of the battery box in Step 2, and then calculate the compression refrigeration and heating power demands P ZP and P 需冷 and adjust the compressor power to achieve thermal regulation control of the charging and swapping station. 需热 Preferably, the main circulation system D in Step 1 consists of three working states: heating working mode D1, pure circulation working mode D2, and refrigeration working mode D3;

[0028] Preferably, the main circulation system D in Step 1 consists of three working states: heating working mode D1, pure circulation working mode D2, and refrigeration working mode D3;

[0029] The heating working mode D1 is specifically: when the average temperature threshold T of the charging battery box ZP ≤18°C and the duration is a standard time t 标 , start the heating working mode D1; The compression heating and electric heating are turned on or off according to the required power; The main pump starts at a suitable speed according to the number of opened external liquid flow valves H of the box. When T4≥60°C and the duration is a standard time t 标 , then start the pure circulation working mode D2;

[0030] The pure circulation working mode D2 is specifically: when 18°C < T ZP <23°C and the duration is a standard time t 标 , start the pure circulation working mode D2; The compressor is turned off, the auxiliary electric heating stops, the refrigerant control valve F is closed, and the main pump starts at a suitable speed according to the number of opened external liquid flow valves H of the box;

[0031] The refrigeration working mode D3 is specifically: T ZP ≥23°C, and T4≥10°C, and the duration is a standard time t 标 , start the refrigeration working mode D3; Start the compression refrigeration according to the required power; The main pump starts at a suitable speed according to the number of opened valves. Continuing, when 7°C < T4 < 10°C and the duration is a standard time t 标 , enter the next judgment step. When T4≤7°C and the duration is a standard time t 标 , then start the pure circulation working mode D2.

[0032] Preferably, the box circulation system X in Step 1 consists of three working states: heating mode X1, refrigeration mode X2, and internal circulation mode X3;

[0033] The heating mode X1 is specifically: when T min ≤17℃, and T max ≤28℃, TP≤T4+5℃, and duration is t 标 , start heating mode X1: assign the power command value Q to +1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, start the water pump S, and continue when Tmin≥20℃, or Tmax≥30℃, and the duration is t 标 , turn on the internal circulation mode X3;

[0034] The cooling mode X2 is specifically as follows: when Tmax≥30℃, TP≥26℃, and TP≥T4+5℃, and the duration is t mark, start cooling mode X2: assign the power command value Q to -1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, and start the water pump S. Continue, when Tmax≤26℃, or TP≤24℃, and the duration is t mark, 标 , turn on the internal circulation mode X3;

[0035] The internal circulation mode X3 is specifically as follows: the power command value Q is set to 0, the liquid flow valve H outside the tank is closed, the liquid flow valve G inside the tank is opened, and the water pump S is turned on. Continue, when Tmax≤26℃, or TP≤24℃, and the duration is t 标 , turn on the internal circulation mode X3.

[0036] Preferably, the cooling working mode is analyzed in step 2, specifically:

[0037] The cooling demand P of the battery box temperature control exchange system B in the station B冷 The method of obtaining is as follows:

[0038] P B冷 =K 冷 ·P X冷 +|P 修冷 |;

[0039] Where: P X冷 Indicates the total power demand of all battery boxes; P 修冷 Indicates the cooling power requirement of a single battery box;

[0040] The total power requirement P of all battery boxes X冷 The method of obtaining is as follows:

[0041] P X冷 =|(Q1+…+Q k +…+Q P )|·P 箱冷 =|M|·P 箱冷 ;

[0042] The cooling power requirement P of the single box battery 修冷 The method of obtaining is as follows:

[0043] P 修冷 =P 测冷 -P X冷 ;

[0044] Where: P 测冷 Indicates the cooling effect value measured in the battery box temperature control exchange system B in the station;

[0045] The cooling effect value P measured in the battery box temperature control exchange system B in the station 测冷 The acquisition method is as follows:

[0046]

[0047] After analyzing the refrigeration working mode, we can further sort out the compressor refrigeration power demand P of the cold and hot production system C. 需冷 .

[0048] Preferably, the analysis of the heating working mode in step 2 is specifically as follows:

[0049] The heating demand P of the battery box temperature regulation exchange system B in the station B热 The method of obtaining is as follows:

[0050] P B热 =K 热 ·P X热 +|P 修热 |;

[0051] Where: P 修热 Indicates the value that needs to increase the heating value; P X热 Indicates the total heating power demand of all battery boxes in the station

[0052] The total heating power required by all battery boxes P X热 The method of obtaining is as follows:

[0053] P X热 =|(Q1+…+Q k +…+Q P )|·P 箱热 =|M|·P 箱热 ;

[0054] Where: P 箱热 Indicates the heating power requirement of a single box of batteries;

[0055] The value P that needs to increase the heating capacity 修热 The method of obtaining is as follows:

[0056] P修热 =P 测热 -P X热 ;

[0057] Where: P 测热 Indicates the heating effect value measured in the battery box temperature control exchange system B in the station;

[0058] The heating effect value P measured in the battery box temperature control exchange system B in the station 测热 The method of obtaining is as follows:

[0059]

[0060] Complete the analysis of the refrigeration working mode and further organize the compressor heating power demand P of the cold and hot production system C. 需热 .

[0061] Preferably, the implementation of thermal regulation control of the charging and swapping station in step 3 is specifically as follows:

[0062] The preset compressor system operation is divided into: cooling state R, off state U, heating state W; T ZP Different values ​​of M correspond to the cooling state R, the off state U, and the heating state W, as follows:

[0063]

[0064] At a standard time t 标 Within, if M∈T ZP , then M is true, otherwise M is false;

[0065] When M is true, the compressor will start at the next time t 标 According to P 需冷 , P 需热 The calculation power value of the work;

[0066] When M is false, the compressor will start at the next time t 标 According to the previous t 标 The power state works within the time.

[0067] A second aspect of the present invention provides a control system for the aforementioned method of controlling thermal regulation in a charging and swapping station, wherein the control system includes an indoor temperature regulation and exchange system A, an in-station battery box temperature regulation and exchange system B, a cold and heat production system C, and a master controller EC;

[0068] The indoor temperature regulation and exchange system A includes an air-conditioning indoor unit, an auxiliary heating device, and a refrigerant control valve E, which is used to regulate the temperature in the station;

[0069] The battery box temperature regulation and exchange system B in the station includes a refrigerant control valve F, a liquid cooling exchanger, a master pump, and a temperature sensor, a water pump S, an external liquid flow valve H, and an internal liquid flow valve G for the single-box charging compartment. The battery box temperature regulation and exchange system B in the station regulates the temperature of each battery box through the above components.

[0070] The cold and heat production system C consists of an air-conditioning outdoor unit and a temperature detector. It realizes cold and heat output by compressing the refrigerant. The cold and heat produced by the C system are specifically distributed through the refrigerant control valve E and the refrigerant control valve F to realize the flow distribution of the refrigerant and thus the distribution of cold and heat.

[0071] The master controller EC can collect, calculate and process information from the indoor temperature control and exchange system A, the station battery box temperature control and exchange system B and the cold and hot production system C, and is responsible for unified component information processing and action execution to achieve station temperature control and battery thermal control.

[0072] Preferably, the cooling mode of the indoor temperature regulating and exchanging system A is turned on only when the indoor temperature regulating and exchanging system A is in the preset cooling mode and the conditions for turning on the cooling mode of the battery box temperature regulating and exchanging system B and the main circulation system D in the station coincide, otherwise the air supply mode is turned on. When the indoor temperature regulating and exchanging system A turns on the heating mode, the refrigerant control valve E is controlled to be closed, and all heat is provided by the electric heating device RA.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] (1) The present invention integrates the ambient temperature management within the station and the thermal regulation of the battery, and performs unified regulation. The compressor heating and auxiliary heating are switched or used in combination according to different outdoor temperatures, thereby avoiding waste of power resources.

[0075] (2) The present invention realizes the optimization of thermal regulation strategy and the individual battery box is controlled separately, which improves the precise management level of battery charging, avoids the problem of heat control during charging, improves charging efficiency, and improves the comprehensive level of intelligent management.

[0076] (3) The present invention rationally configures the system structure, and the master controller implements unified control. One compressor satisfies the thermal regulation of two systems in the station. The station no longer needs a liquid cooling unit to cool the battery separately, and effectively avoids the frequent start-stop switching of the compressor when in the critical state between the heating mode and the circulation mode, and the critical state between the cooling mode and the circulation mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 This is a control block diagram of a control method for thermal regulation of a charging and swapping station according to an embodiment of the present invention;

[0078] Figure 2This is a schematic diagram of the comprehensive functions of the heat exchange large and small circulation system according to an embodiment of the present invention;

[0079] Figure 3 This is a schematic diagram of the system architecture of an embodiment of the present invention;

[0080] Figure 4 Schematic diagram of the working mode of the switching system in embodiment A of the present invention;

[0081] Figure 5 Schematic diagram of the working mode of the switching system in Example B of the present invention;

[0082] Figure 6 This is a flow chart of the box circulation system according to an embodiment of the present invention;

[0083] Figure 7 This is a flow chart of the main circulation system of an embodiment of the present invention. DETAILED DESCRIPTION

[0084] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0085] The embodiment of the present invention is used for controlling thermal regulation of charging and swapping stations, integrating the ambient temperature management in the station and the thermal regulation of the battery, and performing unified regulation. The compressor heating and auxiliary heat are switched or used in combination according to different outdoor temperatures, thereby improving the efficiency of power resource utilization. The embodiment of the present invention realizes the optimization of thermal regulation strategy, improves the level of precise management of battery charging, and improves the comprehensive level of intelligent management. The embodiment of the present invention uniformly configures the control system structure of thermal regulation of charging and swapping stations, which is uniformly controlled by the main controller. One compressor satisfies the thermal regulation of two systems in the station. The liquid cooling unit is no longer needed inside the station to cool the battery separately, effectively avoiding the frequent start-stop switching of the compressor operation in the critical state of heating mode and circulation mode, and the critical state of cooling mode and circulation mode. The embodiment of the present invention can meet actual needs and be applied to actual scenarios. Figure 1 Shown is a control block diagram of a control method for thermal regulation of a charging and swapping station according to an embodiment of the present invention.

[0086] The embodiment of the present invention provides a control method for thermal regulation of a charging and swapping station, such as Figure 2 The figure shows the comprehensive functional diagram of the heat exchange large and small circulation system of the embodiment of the present invention. In order to demonstrate the applicability of the present invention, it is applied to an example, as follows:

[0087] Implementation Case 1, as shown in Table 1, a battery swap station that can simultaneously charge 15 boxes of batteries, 10 boxes of batteries are being charged, and the remaining 5 boxes of batteries are fully charged. One day in winter, in a 3-minute time period t 标During the period, the temperature of T4 is 38°C (if T4 changes, T4 is the average temperature during this period), the temperature of T3 is 53°C (if T3 changes, T3 is the average temperature during this period), and the status information of the 10 sets of charging battery boxes in the battery swap station is shown in Table 1.

[0088] Table 1 Battery box status information table of winter charging and swapping station according to an embodiment of the present invention

[0089]

[0090] S1: Start the main circulation system and tank circulation system of the charging and swapping station;

[0091] Start the main circulation system D, which switches the working mode according to the average temperature threshold of all rechargeable battery boxes. The main circulation system D consists of three working states: heating working mode D1, pure circulation working mode D2 and cooling working mode D3; Figure 7 Shown is a flow chart of the main circulation system of an embodiment of the present invention.

[0092] The method for obtaining the average temperature threshold of all rechargeable battery boxes is to import data from the table as follows:

[0093]

[0094] The specific judgment condition of heating working mode D1 is: when the average temperature threshold value T ZP ≤18℃, and the duration is a standard time t 标 , start heating mode D1; compressor heating and electric heating are turned on or off according to the required power; the master pump is turned on at the appropriate speed according to the number of openings of the liquid flow valve H outside the tank. When T4 ≥ 60℃ and the duration is a standard time t 标 When the temperature is 14℃≤18℃, the pure circulation working mode D2 is turned on; Tzp is 14℃≤18℃, and the T4 temperature is 53℃, which meets the heating working mode D1.

[0095] When the main circulation system D is started, set the total pump speed V of the circulation system Z , the single speed V is preset to 80 rpm, as follows:

[0096] V Z =(H1+…+H j +…+H m )·V=(1+1+1+0+1+1+1+1+1+1)*80=720;

[0097] Where: V Z Indicates the total pump speed of the circulation system; H1 indicates the state of the first external liquid flow valve; H j Indicates the state of the j-th external liquid flow valve; H mIndicates the status of the mth external liquid flow valve; V indicates the required speed when a single battery box starts the water pump; j indicates the number of the external liquid flow valve of the circulation system; m indicates the number of external liquid flow valves of the circulation system. As shown in Table 1, m is 10, where the fourth battery box is in the internal circulation mode and does not need to start external circulation. It only needs to follow the actual liquid cooling flow of the 9 battery boxes. If there is no calculation formula, the total pump speed needs to be fully opened according to 15 battery boxes, which increases the load on the total pump and the pressure on the pipe.

[0098] Start the box circulation system X, and according to the specific parameter status of each battery box, start the corresponding box circulation mode respectively; the box circulation system X consists of three working states: heating mode X1, cooling mode X2 and internal circulation mode X3. Figure 6 Shown is a flow chart of a box circulation system according to an embodiment of the present invention.

[0099] Heating mode X1 is as follows: when T min ≤17℃, and T max ≤28℃, TP≤T4+5℃, and duration is t 标 , start heating mode X1: assign the power command value Q to +1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, and start the water pump S. According to Table 1, among the 10 boxes of batteries in the charging state, except for the 4th box, all meet the heating mode X1. According to Figure 6 , the fourth battery box meets the internal circulation mode X3, specifically: Condition 1 "When T min ≤17℃, and T max ≤28℃, TP≤T4+5℃, and duration is t 标 " is no, condition 2 "When Tmax ≥ 30℃, and TP ≥ 26℃, and TP ≥ T4 + 5℃, and the duration is t 标 If the answer is "No", the internal circulation mode X3 process is entered. This avoids the situation where all battery boxes are controlled by the overall cooling strategy in a one-size-fits-all manner, and better controls the battery boxes to charge at a more ideal temperature, thereby improving charging efficiency.

[0100] S2: Determine the cooling and heating value of the compressor cooling and heating production system of the specific charging and swapping station based on the total demand instruction value;

[0101] The method for obtaining the total demand instruction value M for heating and cooling of the battery box is as follows:

[0102] M=Q1+…+Q k +…+Q P ,k∈(1,2,…,P);

[0103] Where: M represents the total demand instruction value for heating and cooling of the battery box; Q1 represents the demand instruction value for the heating and cooling mode of the first battery box; Q k Indicates the hot and cold mode command value required by the kth battery box; Qp represents the hot and cold mode command value required by the p-th battery box; k represents the battery box number; P represents the total number of hot and cold mode command values ​​required by the battery box. According to the figure, we can get:

[0104] M=1+1+1+0+1+1+1+1+1+1=9;

[0105] When M < 0, M = 0, M > 0, the corresponding compressor power demand is cooling, stop, and heating working modes respectively. In this example, M = 9 > 0, so the compressor demand is heating working mode.

[0106] By analyzing the heating working mode, it is specifically as follows:

[0107] The station's battery box temperature control exchange system B heating demand P B热 The method of obtaining is as follows:

[0108] P B热 =K 热 ·P X热 +|P 修热 |;

[0109] Where: P 修热 Indicates the value that needs to increase the heating value; P X热 Indicates the total heating power demand of all battery boxes in the station.

[0110] The total heating power required by all battery boxes P X热 The method of obtaining is as follows:

[0111] P X热 =|(Q1+…+Q k +…+Q P )|·P 箱热 =|M|·P 箱热 =9*2.5=22.5;

[0112] Where: P 箱热 Indicates the heating power requirement of a single battery box, which is preset to 2.5KW / h.

[0113] The value P of heating capacity that needs to be increased 修热 The method of obtaining is as follows:

[0114] P 修热 =P 测热 -P X热 ;

[0115] Where: P 测热 Indicates the heating effect value measured in the battery box temperature control exchange system B in the station, in KW / h.

[0116] The heating effect value P measured in the battery box temperature control exchange system B in the station 测热 The method of obtaining is as follows:

[0117]

[0118] Complete the analysis of the heating working mode and further organize the heating power demand P of the compressor of the cold and hot production system C. 需热 .

[0119] The heating power requirement of the compressor of the cold and hot production system C is obtained as follows:

[0120]

[0121] Where: P 需热 represents the heat power demand of the compressor of the cold and heat production system C; P B热 Indicates the heating demand of the battery box temperature control exchange system B in the station; P RB Indicates that the auxiliary heating function is turned on, P RB The default setting is 2KW / h; K 热 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 热 Greater than 1, preset K 热 is 1.1; P X热 Indicates the total heating power demand of all battery boxes; ΔT 热 Indicates the inlet and outlet temperatures during heating at time t 标 (0.05 hours) difference ΔT 热 =T3-T4=15℃, C is the specific heat capacity of the refrigerant, which is 0.00117KWh / (kg·℃), ρ is the refrigerant 1000kg / m3, and the flow meter L0 is at t 标 The measured volume is 0.108m 3 .

[0122] The heating power is turned on as needed based on the total demand of different battery states.

[0123] S3: Collect BMS battery parameters based on the CAN network to achieve thermal regulation control of the charging and swapping station;

[0124] Get the average temperature threshold T of all rechargeable battery boxes in S1 ZP , start the compressor working mode according to the size of this value, and start the corresponding box circulation mode according to the specific parameter status of each battery box; obtain the total demand instruction value M of the battery box heating and cooling mode in S2, and then calculate the compressor cooling and heating power demand P of the cold and hot production system C 需冷 and P 需热, adjust the compressor power to achieve thermal regulation control of the charging and swapping station. The specific process is as follows:

[0125] The preset compressor system operation is divided into: cooling state R, off state U, heating state W; T ZP When the and M values ​​are different, they correspond to the above three states, as follows:

[0126]

[0127] At a standard time t 标 Within, if M∈T ZP , then M is true, otherwise M is false.

[0128] In this example, S1, T ZP Corresponding to the heating state W, S2, M corresponds to the heating state W, that is, M∈T ZP .

[0129] So M is true, and the compressor will 标 According to P 需热 The calculated power value works.

[0130] The second aspect of the present invention proposes a control system for a control method for thermal regulation of a charging and swapping station, wherein the control system includes an indoor temperature regulation and exchange system A, an in-station battery box temperature regulation and exchange system B, a cold and hot production system C and a master controller EC; Figure 3 FIG. 1 is a schematic diagram of the system architecture of an embodiment of the present invention.

[0131] The indoor temperature control exchange system A includes an air-conditioning indoor unit, an auxiliary heating device, and a refrigerant control valve E, which is used to control the temperature in the station. Figure 4 FIG. 1 is a schematic diagram of the working mode of the switching system according to embodiment A of the present invention.

[0132] The battery box temperature regulation and exchange system B in the station includes a refrigerant control valve F, a liquid cooling exchanger, a master pump, and a temperature sensor for a single charging compartment, a water pump S, an external liquid flow valve H, and an internal liquid flow valve G. The battery box temperature regulation and exchange system B in the station regulates the temperature of each battery box through the above components. Figure 5 FIG. 1 is a schematic diagram of the working mode of the switching system according to embodiment B of the present invention.

[0133] The cold and heat production system C consists of an air-conditioning outdoor unit and temperature detection. It realizes cold and heat output by compressing the refrigerant. The cold and heat produced by the C system are specifically distributed through the refrigerant control valve E and the refrigerant control valve F to realize the refrigerant flow distribution and thus realize the distribution of cold and heat.

[0134] The main controller EC can collect, calculate and process information from the indoor temperature control and exchange system A, the station battery box temperature control and exchange system B and the hot and cold production system C, and is responsible for the unified component information processing and action execution, realizing station temperature regulation, reasonable battery thermal regulation, and comprehensive and efficient energy utilization.

[0135] The cooling mode of the indoor temperature regulation and exchange system A is turned on only when the indoor temperature regulation and exchange system A is in the preset cooling mode and the conditions for turning on the cooling mode of the battery box temperature regulation and exchange system B and the main circulation system D in the station coincide. Otherwise, the air supply mode is turned on. When the indoor temperature regulation and exchange system A turns on the heating mode, the refrigerant control valve E is controlled to be closed, and all heat is provided by the electric heating device RA.

[0136] Based on the beneficial effects of the above examples, as shown in Table 1, m is 10, where the fourth battery box is in the internal circulation mode and does not need to be turned on for external circulation. It only needs to be calculated according to the actual liquid cooling flow of the 9 battery boxes. If there is no calculation formula, the total pump speed needs to be fully opened according to 15 battery boxes, which increases the load on the total pump and the pressure on the pipe.

[0137] Battery boxes in different states enter the circulation mode process on demand, which avoids the one-size-fits-all control of all battery boxes according to the overall hot and cold control strategy, better controls the battery boxes to charge at a more ideal temperature, and improves charging efficiency.

[0138] According to different battery status requirements, the total P 需热 , heating power is turned on as needed.

[0139] Implementation Case 2, as shown in Table 2, a battery swap station that can simultaneously charge 15 boxes of batteries, 10 boxes of batteries are being charged, and the remaining 5 boxes of batteries are fully charged. One summer day, in a 3-minute time period t 标 During the period, the temperature of T4 is 20°C (if T4 changes, T4 is the average temperature during this period), the temperature of T3 is 8°C (if T3 changes, T3 is the average temperature during this period), and the status information of the 10 sets of charging battery boxes in the battery swap station is shown in Table 2.

[0140] Table 2 Battery box status information table of summer charging and swapping station according to the embodiment of the present invention

[0141]

[0142] S1: Start the main circulation system and tank circulation system of the charging and swapping station;

[0143] Start the main circulation system D, which switches the working mode according to the average temperature threshold of all rechargeable battery boxes. The main circulation system D consists of three working states: heating working mode D1, pure circulation working mode D2 and cooling working mode D3; Figure 7 The flowchart of the main circulation system in the embodiment of the present invention is shown below.

[0144] The method for obtaining the average temperature threshold of all charging battery boxes is to import data from a table as follows:

[0145]

[0146] The specific refrigeration working mode D3 is as follows: T ZP ≥23°C, and T4≥10°C, and the duration is a standard time t 标 , start the refrigeration working mode D3; start the compressor refrigeration according to the required power; the main pump starts at an appropriate speed according to the number of opened valves. Subsequently, when 7°C < T4 < 10°C, and the duration is a standard time t 标 , enter the next judgment step. When T4≤7°C, and the duration is a standard time t 标 , then start the pure circulation working mode D2. Tzp is 31°C≥23°C, and the T4 temperature is 20°C≥10°C, which meets the refrigeration working mode D3.

[0147] When the main circulation system D starts, set the speed V of the main pump of the circulation system Z , and the preset speed V of a single unit is 80 revolutions per minute, as follows:

[0148] V Z =(H1 + … + H j + … + H m )·V=(1 + 1 + 1 + 1 + 0 + 1 + 1 + 0 + 1 + 1)*80 = 640;

[0149] In the formula: V Z represents the speed of the main pump of the circulation system; H1 represents the state of the first out-of-box liquid flow valve; H j represents the state of the jth out-of-box liquid flow valve; H m represents the state of the mth out-of-box liquid flow valve; V represents the required speed when the water pump of a single battery box is started; j represents the number of the out-of-box liquid flow valves in the circulation system; m represents the number of the out-of-box liquid flow valves in the circulation system; as shown in Table 2, m is 10, and the 5th and 8th battery boxes are in the in-box circulation mode and do not need to start the external circulation. Only the liquid cooling flow rate of 8 actual battery boxes is required. If there is no calculation formula, the main pump speed needs to be set as if all 15 battery boxes are fully open, which increases the load of the main pump and the pressure of the pipes.

[0150] Start the box circulation system X, and start the corresponding box circulation modes respectively according to the specific parameter states of each battery box; the box circulation system X consists of three working states: heating mode X1, refrigeration mode X2, and internal circulation mode X3; as Figure 6 shown is the flowchart of the box circulation system in the embodiment of the present invention.

[0151] Cooling mode X2 is specifically: when Tmax ≥ 30℃, and TP ≥ 26℃, and TP ≥ T4 + 5℃, and the duration is t mark, start cooling mode X2: the power command value Q is assigned to -1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, and start the water pump S. Continue, when Tmax ≤ 26℃, or TP ≤ 24℃, and the duration is t 标 , turn on the internal circulation mode X3.

[0152] According to Table 2, among the 10 boxes of batteries in the charging state, except for the 5th and 8th boxes, all meet the cooling mode X2. Figure 6 The two battery boxes meet the internal circulation mode X3, specifically: Condition 1 "When T min ≤17℃, and T max ≤28℃, TP≤T4+5℃, and duration is t 标 " is no, condition 2 "When Tmax ≥ 30℃, and TP ≥ 26℃, and TP ≥ T4 + 5℃, and the duration is t 标 If the answer is "No", the internal circulation mode X3 process is entered. This avoids all battery boxes being controlled in a one-size-fits-all manner according to the overall cooling strategy, better controls the battery boxes to charge at a more ideal temperature, and improves charging efficiency.

[0153] S2: Determine the cooling and heating value of the compressor cooling and heating production system of the specific charging and swapping station based on the total demand instruction value;

[0154] The method for obtaining the total demand instruction value M for heating and cooling of the battery box is as follows:

[0155] M=Q1+…+Q k +…+Q P ,k∈(1,2,…,P);

[0156] Where: M represents the total demand instruction value for heating and cooling of the battery box; Q1 represents the demand instruction value for the heating and cooling mode of the first battery box; Q k Indicates the hot and cold mode command value required by the kth battery box; Q p represents the hot and cold mode command value required by the p-th battery box; k represents the battery box number; P represents the total number of hot and cold mode command values ​​required by the battery box; According to Table 1:

[0157] M=(-1)+(-1)+(-1)+(-1)+0+(-1)+(-1)+0+(-1)+(-1)=-8;

[0158] When M<0, M=0, M>0, the corresponding compressor power demands are cooling, stop, and heating working modes, respectively. In this example, M=-8<0, so the compressor demand is cooling working mode.

[0159] By analyzing the refrigeration working mode, it is specifically as follows:

[0160] Battery box temperature control exchange system B cooling demand P B冷 The method of obtaining is as follows:

[0161] P B冷 =K 冷 ·P X冷 +|P 修冷 |;

[0162] Where: P X冷 Indicates the total power demand of all battery boxes; P 修冷 Indicates the cooling power requirement of a single battery box.

[0163] The total power required by all battery boxes P X冷 The method of obtaining is as follows:

[0164] P X冷 =|(Q1+…+Q k +…+Q P )|·P 箱冷 =|M|·P 箱冷 =8*2=16;

[0165] Cooling power requirement P for a single battery box 修冷 The method of obtaining is as follows:

[0166] P 修冷 =P 测冷 -P X冷 ;

[0167] Where: P 测冷 Indicates the cooling effect value measured in the battery box temperature control exchange system B in the station.

[0168] The cooling effect value P measured in the battery box temperature control exchange system B in the station 测冷 The acquisition method is as follows:

[0169]

[0170] After analyzing the refrigeration working mode, we can further sort out the compressor refrigeration power demand P of the cold and hot production system C. 需冷 .

[0171] The compressor refrigeration power requirement of the cold and hot production system C is obtained as follows:

[0172]

[0173] Where: P 需冷 represents the compressor cooling power demand of the cold and hot production system C; P A冷Indicates the cooling demand of indoor temperature control exchange system A, which is preset to 8KW / h; P B冷 Indicates the cooling demand of the battery box temperature control exchange system B in the station; K 冷 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 冷 Greater than 1, the default is 1.1; P 箱冷 Indicates the cooling power requirement of a single battery box, which is preset to 2KW / h; ΔT 冷 Indicates the inlet and outlet temperatures during cooling at time t 标 C represents the specific heat capacity per unit mass of the coolant; ρ represents the coolant density; V represents the flow meter value L0 at time t 标 The coolant volume measured inside; t 标 Indicates the difference ΔT within a standard time (0.05 hours) 热 =T4-T3=12℃, C is the specific heat capacity of the refrigerant, which is 0.00117KWh / (kg·℃), ρ is the refrigerant 1000kg / m3, and the flow meter L0 is at t 标 The measured volume is 0.096m 3 .

[0174] The cooling power is turned on as needed based on the total demand of different battery states.

[0175] S3: Collect BMS battery parameters based on the CAN network to achieve thermal regulation control of the charging and swapping station;

[0176] Get the average temperature threshold T of all rechargeable battery boxes in S1 ZP , start the compressor working mode according to the size of this value, and start the corresponding box circulation mode according to the specific parameter status of each battery box; obtain the total demand instruction value M of the battery box heating and cooling mode in S2, and then calculate the compressor cooling and heating power demand P of the cold and hot production system C 需冷 and P 需热 , adjust the compressor power to achieve thermal regulation control of the charging and swapping station. The specific process is as follows:

[0177] The preset compressor system operation is divided into: cooling state R, off state U, heating state W; T ZP When the and M values ​​are different, they correspond to the above three states, as follows:

[0178]

[0179] At a standard time t 标 Within, if M∈T ZP , then M is true, otherwise M is false.

[0180] In this example, S1, TZP Corresponding to the cooling state W, S2, M corresponds to the cooling state W, that is, M∈T ZP .

[0181] So M is true, and the compressor will 标 According to P 需冷 The calculated power value works.

[0182] The second aspect of the present invention proposes a control system for a control method for thermal regulation of a charging and swapping station, wherein the control system includes an indoor temperature regulation and exchange system A, an in-station battery box temperature regulation and exchange system B, a cold and hot production system C and a master controller EC; Figure 3 Shown is a schematic diagram of the system architecture of an embodiment of the present invention.

[0183] The indoor temperature control exchange system A includes an air-conditioning indoor unit, an auxiliary heating device, and a refrigerant control valve E, which is used to control the temperature in the station. Figure 4 FIG. 1 is a schematic diagram of the working mode of the switching system according to embodiment A of the present invention.

[0184] The battery box temperature regulation and exchange system B in the station includes a refrigerant control valve F, a liquid cooling exchanger, a master pump, and a temperature sensor for a single charging compartment, a water pump S, an external liquid flow valve H, and an internal liquid flow valve G. The battery box temperature regulation and exchange system B in the station regulates the temperature of each battery box through the above components. Figure 5 FIG. 1 is a schematic diagram of the working mode of the switching system according to embodiment B of the present invention.

[0185] The cold and heat production system C consists of an air-conditioning outdoor unit and temperature detection. It realizes cold and heat output by compressing the refrigerant. The cold and heat produced by the C system are specifically distributed through the refrigerant control valve E and the refrigerant control valve F to realize the refrigerant flow distribution and thus realize the distribution of cold and heat.

[0186] The main controller EC can collect, calculate and process information from the indoor temperature control and exchange system A, the station battery box temperature control and exchange system B and the hot and cold production system C, and is responsible for the unified component information processing and action execution, realizing station temperature regulation, reasonable battery thermal regulation, and comprehensive and efficient energy utilization.

[0187] The cooling mode of the indoor temperature regulation and exchange system A is turned on only when the indoor temperature regulation and exchange system A is in the preset cooling mode and the conditions for turning on the cooling mode of the battery box temperature regulation and exchange system B and the main circulation system D in the station coincide. Otherwise, the air supply mode is turned on. When the indoor temperature regulation and exchange system A turns on the heating mode, the refrigerant control valve E is controlled to be closed, and all heat is provided by the electric heating device RA.

[0188] Based on the beneficial effects of Example 2 above, as shown in Table 2, m is 10, and the 5th and 8th battery boxes are in the box circulation mode. There is no need to turn on the external circulation. It is only necessary to follow the actual liquid cooling flow of the 8 battery boxes. If there is no calculation formula, the total pump speed needs to be fully opened according to 15 battery boxes, which increases the load of the total pump and the pressure of the pipe; battery boxes in different states enter the circulation mode process on demand, which avoids all battery boxes being controlled in a one-size-fits-all manner according to the overall hot and cold control strategy, better controls the battery boxes to charge at a more ideal temperature, improves the charging efficiency, and turns on the cooling power on demand according to the total demand of different battery states.

[0189] In summary, the control method for thermal regulation of charging and swapping stations in this case and the prediction results of its system have proven to be very effective.

[0190] (1) The embodiment of the present invention is used to control the thermal regulation of a charging and swapping station, integrating the ambient temperature management in the station and the thermal regulation of the battery, and performing unified regulation. The compressor heating and auxiliary heating are switched or used in combination according to different outdoor temperatures, thereby improving the efficiency of power resource utilization. Through the calculation and analysis of the above two cases, it can be clearly seen that the present invention has the advantages of being applicable to actual scenarios.

[0191] (2) The embodiment of the present invention is used to control thermal regulation in charging and swapping stations, which realizes the optimization of thermal regulation strategy and the independent control of individual battery boxes, thereby improving the precise management level of battery charging, avoiding the problem of heat control during charging, improving charging efficiency, and improving the overall level of intelligent management.

[0192] (3) The embodiment of the present invention rationally configures the control system structure of the thermal regulation of the charging and swapping station. The main controller performs unified control. One compressor satisfies the thermal regulation of the two systems in the station. The station no longer needs a liquid cooling unit to cool the battery separately. This effectively avoids the frequent start-stop switching of the compressor when the heating mode and the circulation mode are in critical state, and the cooling mode and the circulation mode are in critical state.

[0193] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A control method for thermal regulation of a charging and swapping station, characterized in that: It includes the following steps: Step 1: Start the main circulation system and tank circulation system of the charging and swapping station; The main circulation system D is started. The main circulation system D switches the working mode according to the average temperature threshold of all rechargeable battery boxes. The method for obtaining the average temperature threshold of all rechargeable battery boxes is as follows: Where: T ZP Indicates the average temperature threshold of all rechargeable battery boxes; T P1 Indicates the average temperature of the battery box during the first charge; T Pi represents the average temperature of the battery box during charging of the i-th battery; T Pn Indicates the average temperature of the nth battery box being charged; i indicates the number of the battery box being charged; n indicates the number of battery boxes being charged; When the main circulation system D is started, set the total pump speed V of the circulation system Z ,as follows: In Z =(H1+…+H j +…+H m )·V; Where: V Z Indicates the total pump speed of the circulation system; H1 indicates the state of the first external liquid flow valve; H j Indicates the state of the j-th external liquid flow valve; H m Indicates the status of the mth external liquid flow valve; V represents the required speed when a single battery box starts the water pump; j represents the number of the external liquid flow valve of the circulation system; m represents the number of external liquid flow valves of the circulation system; Start the box circulation system X, and according to the specific parameter status of each battery box, start the corresponding box circulation mode respectively; The box circulation system X consists of three working states: heating mode X1, cooling mode X2 and internal circulation mode X3; The heating mode X1 is specifically: when T min ≤17℃, and T max ≤28℃, TP≤T4+5℃, and duration is t 标 , start heating mode X1: assign the power command value Q to +1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, start the water pump S, and continue when Tmin≥20℃, or Tmax≥30℃, and the duration is t 标 , turn on the internal circulation mode X3; The cooling mode X2 is specifically as follows: when Tmax≥30℃, TP≥26℃, and TP≥T4+5℃, and the duration is t mark, start cooling mode X2: assign the power command value Q to -1, open the liquid flow valve H outside the box, close the liquid flow valve G inside the box, and start the water pump S. Continue, when Tmax≤26℃, or TP≤24℃, and the duration is t mark, 标 , turn on the internal circulation mode X3; The internal circulation mode X3 is specifically as follows: the power command value Q is set to 0, the liquid flow valve H outside the tank is closed, the liquid flow valve G inside the tank is opened, and the water pump S is turned on. Continue, when Tmax≤26℃, or TP≤24℃, and the duration is t 标 , start the internal circulation mode X3 step 2: determine the cooling and heating value of the compressor cooling and heating production system of the specific charging and swapping station according to the total demand instruction value; The method for obtaining the total demand instruction value M for heating and cooling of the battery box is as follows: M=Q1+…+Q k +…+Q P ,k∈(1,2,…,P); Where: M represents the total demand instruction value for heating and cooling of the battery box; Q1 represents the demand instruction value for the heating and cooling mode of the first battery box; Q k Indicates the hot and cold mode command value required by the kth battery box; Q p represents the hot and cold mode command value required by the p-th battery box; k represents the battery box number; P represents the total number of hot and cold mode command values ​​required by the battery box; When M < 0, M = 0, M > 0, the corresponding compressor power demand is cooling, stop, or heating working mode respectively; By analyzing the refrigeration working mode, the compressor refrigeration power demand of the cold and hot production system C is obtained as follows: Where: P 需冷 represents the compressor cooling power demand of the cold and hot production system C; P A冷 represents the cooling demand of indoor temperature control exchange system A; P B冷 Indicates the cooling demand of the battery box temperature control exchange system B in the station; K 冷 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 冷 Greater than 1; P 箱冷 Indicates the cooling power requirement of a single battery box; ΔT 冷 Indicates the inlet and outlet temperatures during cooling at time t 标 The difference within ; C represents the specific heat capacity per unit mass of the coolant; ρ represents the coolant density; V represents the flow meter value L0 at time t 标 The coolant volume measured inside; t 标 Indicates a standard time; By analyzing the heating working mode, the heating power demand of the compressor of the cooling and heating production system C is obtained as follows: Where: P 需热 represents the heat power demand of the compressor of the cold and heat production system C; P B热 Indicates the heating demand of the battery box temperature control exchange system B in the station; P RB Indicates that the auxiliary heating function is turned on, P RB Greater than 0; K 热 K represents the energy loss compensation coefficient of the battery box temperature regulation exchange system B in the station, 热 Greater than 1; P X热 Indicates the total heating power demand of all battery boxes; ΔT 热 Indicates the inlet and outlet temperatures during heating at time t 标 The difference within Step 3: Collect battery parameters from the BMS based on the CAN network to implement thermal regulation control of the charging and swapping station; Get the average temperature threshold T of all rechargeable battery boxes in step 1 ZP , according to the average temperature threshold T of the rechargeable battery box ZP Start the working mode of the compressor and start the corresponding box circulation mode according to the specific parameter status of each battery box; obtain the total demand instruction value M of the battery box heating and cooling mode in step 2, and then calculate the compressor cooling and heating power demand P of the cold and hot production system C 需冷 and P 需热 , adjust the compressor power to achieve thermal regulation control of the charging and swapping station.

2. The control method for thermal regulation of a charging and swapping station according to claim 1, characterized in that: The main circulation system D in step 1 is composed of three working states: heating working mode D1, pure circulation working mode D2 and cooling working mode D3; The heating working mode D1 is specifically: when the average temperature threshold value T ZP ≤18℃, and the duration is a standard time t 标 , start heating mode D1; compressor heating and electric heating are turned on or off according to the required power; the master pump is turned on at the appropriate speed according to the number of openings of the liquid flow valve H outside the tank. When T4 ≥ 60℃ and the duration is a standard time t 标 When , the pure cycle working mode D2 is turned on; The pure cycle working mode D2 is specifically: when 18℃ <T ZP <23℃, and the duration is a standard time t 标 , start the pure cycle working mode D2; The compressor is turned off, the auxiliary electric heating is stopped, the refrigerant control valve F is closed, and the master pump is turned on at an appropriate speed according to the opening number of the external liquid flow valve H; The specific refrigeration working mode D3 is as follows: T ZP ≥23°C, and T4 ≥ 10°C, and the duration is one standard time t 标 , start the refrigeration working mode D3; start the compressor for refrigeration according to the required power; the master pump starts at an appropriate speed according to the number of opened valves. Subsequently, when 7°C < T4 < 10°C, and the duration is one standard time t 标 , enter the next judgment step. When T4 ≤ 7°C, and the duration is one standard time t 标 , then start the pure circulation working mode D2.

3. The control method for thermal regulation of a charging and swapping station according to claim 1, characterized in that: In step 2, the refrigeration working mode is analyzed, specifically: The cooling demand P of the battery box temperature control exchange system B in the station B冷 The method of obtaining is as follows: P B冷 =K 冷 ·P X冷 +|P 修冷 |; Where: P X冷 Indicates the total power demand of all battery boxes; P 修冷 Indicates the cooling power requirement of a single battery box; The total power requirement P of all battery boxes X冷 The method of obtaining is as follows: P X冷 =|(Q1+…+Q k +…+Q P )|·P 箱冷 =|M|·P 箱冷 ; The cooling power requirement P of the single box battery 修冷 The method of obtaining is as follows: P 修冷 =P 测冷 -P X冷 ; Where: P 测冷 Indicates the cooling effect value measured in the battery box temperature control exchange system B in the station; The cooling effect value P measured in the battery box temperature control exchange system B in the station 测冷 The acquisition method is as follows: After analyzing the refrigeration working mode, we can further sort out the compressor refrigeration power demand P of the cold and hot production system C. 需冷 .

4. The control method for thermal regulation of a charging and swapping station according to claim 1, characterized in that: The analysis of the heating working mode in step 2 is specifically as follows: The heating demand P of the battery box temperature regulation exchange system B in the station B热 The method of obtaining is as follows: P B热 =K 热 ·P X热 +|P 修热 |; Where: P 修热 Indicates the value that needs to increase the heating value; P X热 The total heating power required by all battery boxes in the station is P. X热 The method of obtaining is as follows: P X热 =|(Q1+…+Q k +…+Q P )|·P 箱热 =|M|·P 箱热 ; Where: P 箱热 Indicates the heating power requirement of a single box of batteries; The value P that needs to increase the heating capacity 修热 The method of obtaining is as follows: P 修热 =P 测热 -P X热 ; Where: P 测热 Indicates the heating effect value measured in the battery box temperature control exchange system B in the station; The heating effect value P measured in the battery box temperature control exchange system B in the station 测热 The method of obtaining is as follows: Complete the analysis of the refrigeration working mode and further organize the compressor heating power demand P of the cold and hot production system C. 需热 .

5. The control method for thermal regulation of a charging and swapping station according to claim 1, characterized in that: The implementation of thermal regulation control of the charging and swapping station in step 3 is specifically as follows: The preset compressor system operation is divided into: cooling state R, off state U, heating state W; T ZP Different values ​​of M correspond to the cooling state R, the off state U, and the heating state W, as follows: At a standard time t 标 Within, if M∈T ZP , then M is true, otherwise M is false; When M is true, the compressor will start at the next time t 标 According to P 需冷 , P 需热 The calculation power value of the work; When M is false, the compressor will start at the next time t 标 According to the previous t 标 The power state works within the time.

6. A control system for implementing the control method for thermal regulation of a charging and swapping station according to any one of claims 1 to 5, characterized in that: It includes indoor temperature regulation and exchange system A, station battery box temperature regulation and exchange system B, cold and hot production system C and main controller EC; The indoor temperature regulation exchange system A includes an air-conditioning indoor unit, an auxiliary heating device and a refrigerant control valve E, which is used to regulate the temperature in the station; The battery box temperature regulation and exchange system B in the station includes a refrigerant control valve F, a liquid cooling exchanger, a master pump, and a temperature sensor of a single-box charging compartment, a water pump S, an external liquid flow valve H, and an internal liquid flow valve G; the battery box temperature regulation and exchange system B in the station regulates the temperature of each battery box; The heat and cold production system C includes an air-conditioning outdoor unit and a temperature detection component, and realizes heat and cold output by compressing the refrigerant. The heat and cold produced by the heat and cold production system C is distributed through the refrigerant control valve E and the refrigerant control valve F to realize the flow distribution of the refrigerant and thus the distribution of heat and cold. The master controller EC can collect, calculate and process information from the indoor temperature control and exchange system A, the station battery box temperature control and exchange system B and the cold and hot production system C, and is responsible for unified component information processing and action execution to achieve station temperature control and battery thermal control.

7. The control system of the control method for thermal regulation of a charging and swapping station according to claim 6, characterized in that: When the indoor temperature regulation and exchange system A is in the preset cooling mode, and the conditions for turning on the cooling mode of the battery box temperature regulation and exchange system B and the main circulation system D in the station coincide, the cooling mode of the indoor temperature regulation and exchange system A is turned on, otherwise the air supply mode is turned on. When the indoor temperature regulation and exchange system A turns on the heating mode, the refrigerant control valve E is controlled to be closed, and all heat is provided by the electric heating device RA.

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