Control system for heat management of commercial independent air conditioner

Abstract

The utility model provides a control system for heat management of a commercial independent air conditioner. The control system comprises a battery heat management module, a refrigeration module, a passenger compartment heat management module and an engine heat management module. The battery heat management module is matched with the refrigeration module to achieve switching operation of the self-circulation mode, the refrigeration mode and the heating mode, and the passenger compartment heat management module is matched with the refrigeration module to achieve switching operation of the ventilation mode, the refrigeration mode and the heating mode. The engine heat management module is matched with the battery heat management module and the passenger compartment heat management module to achieve operation in a heating mode, multi-mode work cooperation is achieved, and more reliable, energy-saving and efficient control over the system is achieved.

Description

A control system for commercial independent air conditioning thermal management Technical Field

[0001] This utility model relates to the field of thermal management unit technology, and in particular to a control system for thermal management of commercial independent air conditioning. Background Technology

[0002] Traditional gasoline-powered vehicles have simple thermal management systems. However, when parked, the passenger compartment thermal management requires the internal combustion engine to generate electricity to power the parking air conditioning, resulting in poor overall efficiency. Therefore, it is necessary to develop an independent air conditioning unit with its own battery pack, along with a corresponding battery thermal management system and motor heating system. Furthermore, corresponding control strategies are needed for the passenger compartment thermal management, battery thermal management, and motor heating system to ensure the smooth operation of each independent system. Simultaneously, appropriate protection strategies are required to ensure the effective operation of electrical components in each mode, preventing interference between different operating conditions and avoiding damage to components or system malfunction. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a control system for commercial independent air conditioning thermal management, which more accurately solves the problems described above.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a control system for commercial independent air conditioning thermal management, including a battery thermal management module, a refrigeration module, a passenger compartment thermal management module and an engine thermal management module. The refrigeration module includes a first condenser, a gas-liquid separator, a plate-fin heat exchanger and a first solenoid valve connected in series through a refrigeration circulation pipeline. The first condenser is installed in the air duct of the external fan.

[0006] The battery thermal management module includes a battery heat exchange unit, a water pump, a water PTC and a first water valve connected in series through a battery circulation pipeline. The battery heat exchange unit is attached to the outside of the battery, and the battery circulation pipeline is connected to a plate-fin heat exchanger for heat exchange interaction.

[0007] The crew compartment thermal management module includes a second condenser and a second solenoid valve connected in series through a crew compartment thermal circulation pipeline. The second condenser is installed in the air duct of the internal fan, and a heat exchange PTC is provided on one side of the second condenser.

[0008] The engine thermal management module includes an engine and a second water valve connected in series via an engine thermal circulation pipeline. One end of the engine thermal circulation pipeline is connected in series with the battery circulation pipeline via a three-way valve, and the other end of the engine thermal circulation pipeline is connected in series with the battery circulation pipeline via a four-way valve.

[0009] Furthermore, a compressor is provided in the battery circulation pipeline between the first condenser and the gas-liquid separator, and the compressor is controlled and driven by a compressor driver.

[0010] Furthermore, a low-pressure temperature and pressure sensor is connected to the battery circulation pipeline between the compressor and the gas-liquid separator, and a high-pressure sensor is installed on the battery circulation pipeline connected to the side of the first condenser away from the compressor.

[0011] Furthermore, the second condenser, the second solenoid valve, the first condenser, and the gas-liquid separator are connected in series to form a loop through the crew compartment hot circulation pipeline and the refrigeration circulation pipeline, and the compressor is connected in series in the loop formed by the second condenser, the second solenoid valve, the first condenser, and the gas-liquid separator.

[0012] Furthermore, the engine, the second water valve, the water pump, and the water PTC are connected in series to form a loop through the battery circulation pipeline and the engine hot circulation pipeline, and one end of the four-way valve is connected to an expansion tank.

[0013] Furthermore, the battery thermal management module, in cooperation with the cooling module, can switch between three modes: self-circulation mode, cooling mode, and heating mode. The passenger compartment thermal management module, in cooperation with the cooling module, can switch between three modes: ventilation mode, cooling mode, and heating mode. The engine thermal management module, in cooperation with the battery thermal management module and the passenger compartment thermal management module, can operate in a heating mode.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, the battery thermal management module, in cooperation with the refrigeration module, achieves switching operation in three modes: self-circulation mode, refrigeration mode, and heating mode. The passenger compartment thermal management module, in cooperation with the refrigeration module, achieves switching operation in three modes: ventilation mode, refrigeration mode, and heating mode. The engine thermal management module, in cooperation with the battery thermal management module and the passenger compartment thermal management module, achieves operation in a heating mode. This realizes multi-mode collaborative operation, making the system control more reliable, energy-saving, and efficient.

[0016] 2. This utility model draws in low-temperature air from the external environment through an external fan, which exchanges heat with the first condenser to achieve a cooling function when the ambient temperature is relatively low. Furthermore, by starting the compressor first, the internal refrigerant pressure is increased, thus avoiding alarm problems caused by excessively low pressure. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the system principle of this utility model.

[0018] In the diagram: 1. Battery thermal management module; 101. Battery; 1011. Battery heat exchange unit; 102. Battery circulation pipeline; 103. Water pump; 104. Water PTC; 105. First water valve; 2. Refrigeration module; 201. Compressor; 2011. Compressor driver; 202. Refrigeration circulation pipeline; 203. First condenser; 204. External fan; 205. Gas-liquid separator; 206. Plate-fin heat exchanger; 207. First solenoid valve; 3. Passenger compartment thermal management module; 301. Second condenser; 302. Passenger compartment thermal circulation pipeline; 303. Internal fan; 304. Second solenoid valve; 305. Air PTC; 4. Engine thermal management module; 401. Engine; 402. Engine thermal circulation pipeline; 403. Four-way valve; 404. Three-way valve; 405. Expansion tank; 406. Second water valve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The working status table of each thermal management module in this utility model is shown in Table 1 below:

[0021] Table 1:

[0022]

[0023] Example 1

[0024] A control system for commercial independent air conditioning thermal management includes a battery thermal management module 1, a refrigeration module 2, a passenger compartment thermal management module 3, and an engine thermal management module 4. The refrigeration module 2 includes a first condenser 203, a gas-liquid separator 205, a plate-fin heat exchanger 206, and a first solenoid valve 207, which are connected in series through a refrigeration circulation pipeline 202. The first condenser 203 is located in the air duct of an external fan 204. Low-temperature air from the external environment is drawn in by the external fan 204 and exchanges heat with the first condenser 203, thereby realizing the cooling function when the ambient temperature is relatively low.

[0025] A compressor 201 is installed in the battery circulation pipeline 102 between the first condenser 203 and the gas-liquid separator 205. The compressor 201 is controlled and driven by the compressor driver 2011. By starting the compressor 201 first, the internal refrigerant pressure is increased, thus avoiding the alarm problem caused by low pressure.

[0026] A low-pressure temperature and pressure sensor is connected to the battery circulation line 102 between the compressor 201 and the gas-liquid separator 205. A high-pressure sensor is installed on the battery circulation line 102 connected to the side of the first condenser 203 away from the compressor 201 to detect the temperature and pressure of the refrigerant.

[0027] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: the present invention draws in low-temperature air from the external environment through the external fan 204 and exchanges heat with the first condenser 203, thereby realizing the cooling function when the ambient temperature is relatively low. Furthermore, by starting the compressor 201 first, the internal refrigerant pressure is increased, thus avoiding the alarm problem caused by excessively low pressure.

[0028] Example 2

[0029] The battery thermal management module 1 includes a battery heat exchange unit 1011, a water pump 103, a water PTC 104 and a first water valve 105, which are connected in series through a battery circulation pipeline 102. The battery heat exchange unit 1011 is attached to the outside of the battery 101, and the battery circulation pipeline 102 is connected to the plate fin heat exchanger 206 for heat exchange interaction.

[0030] The specific operation of the three modes of battery thermal management module 1: self-circulation mode, cooling mode, and heating mode:

[0031] Self-circulation mode of battery 101: As shown in Figure 1 and Table 1, only water pump 103 operates to circulate water in battery heat exchange unit 1011.

[0032] Heating mode of battery 101: As shown in Figure 1 and Table 1, water pump 103 operates to circulate water in battery heat exchange unit 1011, while water PTC 104 is controlled to operate to heat the water in battery circulation pipeline 102, thereby heating battery 101.

[0033] Cooling mode of battery 101: As shown in Figure 1 and Table 1, the first solenoid valve 207 is opened, and the condenser inside the cooling circulation pipe 202 circulates. At the same time, the outdoor fan 204 works, drawing in low-temperature air from the external environment and exchanging heat with the first condenser 203 to cool the refrigerant. Combined with the water pump 103 circulating water in the battery circulation pipe 102, the refrigerant and water exchange heat in the plate-fin heat exchanger 206, cooling the water in the battery circulation pipe 102, thereby cooling the battery 101.

[0034] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: In this utility model, the battery thermal management module 1, in cooperation with the cooling module 2, enables free switching between three modes: self-circulation mode, cooling mode, and heating mode.

[0035] Example 3

[0036] The crew compartment thermal management module 3 includes a second condenser 301 and a second solenoid valve 304 connected in series through the crew compartment thermal circulation pipeline 302. The second condenser 301 is installed in the air duct of the internal fan 303, and the air duct of the internal fan 303 is connected to the crew compartment. A heat exchange air PTC 305 is provided on one side of the second condenser 301. The second condenser 301, the second solenoid valve 304, the first condenser 203 and the gas-liquid separator 205 are connected in series through the crew compartment thermal circulation pipeline 302 and the refrigeration circulation pipeline 202 to form a loop.

[0037] The compressor 201 is connected in series in the loop formed by the second condenser 301, the second solenoid valve 304, the first condenser 203 and the gas-liquid separator 205 to achieve stable pressure control of the compressor 201 in the loop.

[0038] The specific operation of the three modes of the crew cabin thermal management module 3: ventilation mode, cooling mode, and heating mode:

[0039] Ventilation mode of crew compartment thermal management module 3: As shown in Figure 1 and Table 1, by controlling the internal fan 303 to turn on, air is blown into the crew compartment to achieve internal ventilation of the crew compartment;

[0040] Heating mode of crew compartment thermal management module 3: As shown in Figure 1 and Table 1, by controlling the PTC305 to start working, and with the operation of the internal fan 303, warm air is sent into the crew compartment to achieve crew compartment heating and ventilation.

[0041] The cooling mode of the crew cabin thermal management module 3: By controlling the opening of the second solenoid valve 304 and the first solenoid valve 207, the condenser inside the cooling circulation pipe 202 circulates. At the same time, the external fan 204 works, drawing in low-temperature air from the external environment and exchanging heat with the first condenser 203 to cool the refrigerant in the second condenser 301. Under the blowing of the internal fan 303, the airflow passes through the second condenser 301, cooling the airflow blown into the crew cabin, thereby achieving internal cooling of the crew cabin.

[0042] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: In this utility model, the crew cabin thermal management module 3, in cooperation with the cooling module 2, enables free switching between three modes: ventilation mode, cooling mode, and heating mode.

[0043] Example 4

[0044] The engine thermal management module 4 includes an engine 401 and a second water valve 406 connected in series via an engine thermal circulation pipe 402. One end of the engine thermal circulation pipe 402 is connected in series with the battery circulation pipe 102 via a three-way valve 404, and the other end of the engine thermal circulation pipe 402 is connected in series with the battery circulation pipe 102 via a four-way valve 403. The engine 401, the second water valve 406, the water pump 103, and the water PTC 104 form a loop through the battery circulation pipe 102 and the engine thermal circulation pipe 402. One end of the four-way valve 403 is connected to an expansion tank 405.

[0045] As shown in Figure 1 and Table 1, by opening the second water valve 406 and closing the first water valve 105, and then controlling the water pump 103 to work, the water circuit connected to the engine 401 is circulated. At the same time, the water PTC 104 is controlled to work to heat the water circuit circulation, thereby heating the engine 401.

[0046] The heating mode of engine 401 and the heating, cooling and self-circulation modes in battery thermal management module 1 cannot be performed simultaneously.

[0047] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: In this utility model, the engine thermal management module 4, in cooperation with the battery thermal management module 1 and the passenger compartment thermal management module 3, realizes the operation of the heating mode in the battery thermal management module 1.

[0048] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A control system for commercial independent air conditioning thermal management, comprising a battery thermal management module (1), a refrigeration module (2), a passenger compartment thermal management module (3), and an engine thermal management module (4), characterized in that, The refrigeration module (2) includes a first condenser (203), a gas-liquid separator (205), a plate-fin heat exchanger (206), and a first solenoid valve (207) connected in series via a refrigeration circulation pipeline (202). The first condenser (203) is located in the air duct of the external fan (204). The battery thermal management module (1) includes a battery heat exchange unit (1011), a water pump (103), a water PTC (104), and a first water valve (105) connected in series via a battery circulation pipeline (102). The battery heat exchange unit (1011) is attached to the outside of the battery (101). The battery circulation pipeline (102) is connected to the plate-fin heat exchanger (206) for heat exchange interaction. The crew cabin The thermal management module (3) includes a second condenser (301) and a second solenoid valve (304) connected in series through the crew compartment thermal circulation pipeline (302). The second condenser (301) is installed in the air duct of the internal fan (303). A heat exchange PTC (305) is provided on one side of the second condenser (301). The engine thermal management module (4) includes an engine (401) and a second water valve (406) connected in series through the engine thermal circulation pipeline (402). One end of the engine thermal circulation pipeline (402) is connected in series with the battery circulation pipeline (102) through a three-way valve (404), and the other end of the engine thermal circulation pipeline (402) is connected in series with the battery circulation pipeline (102) through a four-way valve (403).

2. The control system for commercial independent air conditioning thermal management according to claim 1, characterized in that, A compressor (201) is provided in the battery circulation pipeline (102) between the first condenser (203) and the gas-liquid separator (205), and the compressor (201) is controlled and driven by a compressor driver (2011).

3. The control system for commercial independent air conditioning thermal management according to claim 2, characterized in that, A low-pressure temperature and pressure sensor is connected to the battery circulation pipeline (102) between the compressor (201) and the gas-liquid separator (205), and a high-pressure sensor is provided on the battery circulation pipeline (102) connected to the side of the first condenser (203) away from the compressor (201).

4. A control system for commercial independent air conditioning thermal management according to claim 1 or 2, characterized in that, The second condenser (301), the second solenoid valve (304), the first condenser (203) and the gas-liquid separator (205) are connected in series to form a loop through the crew compartment hot circulation pipe (302) and the refrigeration circulation pipe (202). The compressor (201) is connected in series in the loop formed by the second condenser (301), the second solenoid valve (304), the first condenser (203) and the gas-liquid separator (205).

5. The control system for commercial independent air conditioning thermal management according to claim 1, characterized in that, The engine (401), the second water valve (406), the water pump (103), and the water PTC (104) are connected in series to form a loop through the battery circulation pipeline (102) and the engine hot circulation pipeline (402). One end of the four-way valve (403) is connected to the expansion tank (405).

6. The control system for commercial independent air conditioning thermal management according to claim 1, characterized in that, The battery thermal management module (1) operates in three modes: self-circulation mode, cooling mode, and heating mode, in cooperation with the cooling module (2). The passenger compartment thermal management module (3) operates in three modes: ventilation mode, cooling mode, and heating mode, in cooperation with the cooling module (2). The engine thermal management module (4) operates in a heating mode, in cooperation with the battery thermal management module (1) and the passenger compartment thermal management module (3).

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