Integrated thermal management system for vehicle-mounted refrigerator of electric vehicle and operation method of integrated thermal management system
By building an integrated thermal management system for electric vehicle refrigerators and utilizing water-cooled condensers and cold and heat storage modules, the problems of low efficiency and high cost of independent refrigeration systems in vehicle refrigerators are solved, efficient cooling and heating functions are achieved, and space is saved.
Patent Information
- Application Number
- CN202511065826.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-10-03
AI Technical Summary
In the existing technology, car refrigerators usually use independent semiconductor refrigeration or vapor compression refrigeration systems, which result in low efficiency, high cost and space occupation, and cannot be effectively integrated into the thermal management system of electric vehicles.
An integrated thermal management system for an electric vehicle refrigerator is designed. A secondary circuit thermal management system is constructed by components such as a water-cooled condenser, an electronic water pump, a refrigerator radiator, and a fan. Combined with a cold and heat storage module, the refrigerator can be cooled and heated without the need for an additional compressor.
It achieves efficient cooling and heating of the vehicle refrigerator, reduces system cost and space occupancy, and provides cooling and heating during non-operating hours through the cold and heat storage module, maximizing energy utilization.
Smart Images
Figure CN120735543A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automobile thermal management, and in particular to an integrated thermal management system for an electric vehicle refrigerator and an operating method thereof. Background Art
[0002] The electric vehicle market is currently experiencing rapid growth, and comprehensive thermal management solutions for electric vehicle battery packs, motors, electronic controls, and air conditioning are increasingly being developed. Heat dissipation and cooling for these three major loads are currently the primary targets of automotive thermal management. However, with the upgrading and upgrading of vehicle interior facilities, vehicle refrigerators, as a major load, are gradually being added to the list of managed loads. The industry's primary solution for vehicle refrigerators is a separate system independent of the thermal management system, commonly employing semiconductor refrigeration or a standalone vapor compression refrigeration system. Semiconductor refrigeration is highly susceptible to environmental influences and has low efficiency. Standalone compression refrigeration requires an additional refrigeration system, which is not only costly but also occupies more space within the vehicle.
[0003] Therefore, those skilled in the art need to design an integrated thermal management system for a vehicle refrigerator to solve the problem that a vehicle refrigerator requires an independent vapor compression refrigeration system. Summary of the Invention
[0004] In order to solve the above technical problems, the present invention provides an integrated thermal management system for an on-board refrigerator of an electric vehicle, comprising a water-cooled condenser, a first electronic water pump, an on-board refrigerator, a refrigerator radiator, a refrigerator water cooler, a refrigerator fan, a cold air core, a warm air core, a cooler, a second electronic water pump, a multi-way valve, a first three-way valve, a second three-way valve, a third electronic water pump, a battery pack, a one-way valve, a radiator, a cooling fan, and a motor / electrical component;
[0005] The first electronic water pump is in communication with a water-cooled condenser, the water outlet of the water-cooled condenser is connected to the heater core via a first three-way valve, the water outlet of the water-cooled condenser is in communication with the water inlet of the third electronic water pump, the water inlet of the radiator, and the motor / electrical components via the first three-way valve and a multi-way valve; the water outlets of the motor / electrical components and the battery pack are in communication with the water inlet of the first electronic water pump via the multi-way valve;
[0006] The heater core is connected to the refrigerator radiator and the water inlet of the first electronic water pump in sequence; the water outlet of the third electronic water pump is connected to the water inlet of the battery pack, the water inlet of the one-way valve is connected to the water outlet of the battery pack, and the water outlet of the one-way valve is connected to the water inlet of the third electronic water pump; the radiator is connected to the motor / electrical components, and the cooling fan is arranged on one side of the radiator;
[0007] The cooler is connected to the refrigerator water cooler, the cold air core and the second electronic water pump in sequence through a second three-way valve, and the second electronic water pump is connected to the cooler; the cooler is connected to the water inlet of the third electronic water pump, the water inlet of the radiator and the motor / electrical component through a second three-way valve and a multi-way valve; the water outlet of the motor / electrical component and the battery pack is connected to the water inlet of the second electronic water pump through a multi-way valve; a refrigerator radiator and a refrigerator water cooler are provided at the air inlet and return air outlet of the vehicle refrigerator, and the refrigerator fan is configured to blow the hot air emitted by the refrigerator radiator into the interior of the vehicle refrigerator and to blow the heat inside the vehicle refrigerator into the refrigerator water cooler.
[0008] Furthermore, the thermal management system further includes a water heater, which is arranged between the first three-way valve and the water outlet of the water-cooled condenser.
[0009] Furthermore, the thermal management system further includes a blower, which is configured to deliver the cooled / heated air from the cold air core / warm air core into the passenger compartment.
[0010] Furthermore, a cold and heat storage module is provided in the vehicle refrigerator, which is configured to store cold and heat while the vehicle refrigerator refrigeration circuit / vehicle refrigerator heating circuit cools / heats the interior space of the vehicle refrigerator.
[0011] Furthermore, the multi-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port and a ninth valve port; the first valve port is connected to the water outlet of the battery pack, the second valve port is connected to the water inlet of the second electronic water pump; the third valve port is connected to the water inlet of the first electronic water pump; the fourth valve port is connected to the first interface of the first three-way valve; the fifth valve port is connected to the third interface of the second three-way valve; the sixth valve port is connected to the water inlet of the motor / electrical device; the seventh valve port is connected to the water inlet of the radiator; the eighth valve port is connected to the water inlet of the third electronic water pump; and the ninth valve port is connected to the water outlet of the battery pack.
[0012] Furthermore, the multi-way valve has at least three connection modes.
[0013] In the first connection mode, the first valve port is connected to the second valve port, the third valve port is connected to the eighth valve port, the fourth valve port is connected to the seventh valve port, and the fifth valve port is connected to the ninth valve port;
[0014] In the second connection mode, the first valve port is connected to the third valve port, the second valve port is connected to the eighth valve port, the fourth valve port is connected to the ninth valve port, and the fifth valve port is connected to the seventh valve port;
[0015] In the third connection mode, the first valve port is connected to the third valve port, the second valve port is connected to the eighth valve port, the fourth valve port is connected to the ninth valve port, and the fifth valve port is connected to the sixth valve port.
[0016] On the other hand, the present invention also provides an operating method of an integrated thermal management system for an electric vehicle refrigerator, the operating method comprising:
[0017] After confirming that the vehicle refrigerator has a cooling demand, it is further confirmed whether the passenger compartment needs cooling. If the passenger compartment does not need cooling, under the action of the second electronic water pump, the water outlet of the cooler flows to the refrigerator water cooler and the cold air core through the first interface and the second interface of the second three-way valve, and the refrigerator fan blows the heat inside the vehicle refrigerator into the refrigerator water cooler. The cold water passes through the refrigerator water cooler to take away the heat and cool the internal space of the vehicle refrigerator. The cold and heat storage module is storing cold at this time; finally, the water flows into the cooler; under the action of the first electronic water pump, the hot water coming out of the water-cooled condenser flows to the radiator and the motor / electrical components through the first interface and the second interface of the first three-way valve and the fourth valve port and the seventh valve port of the multi-way valve, and finally returns to the water-cooled condenser through the third valve port and the eighth valve port of the multi-way valve;
[0018] If the passenger compartment needs to be cooled, the blower will work, and the cold water from the refrigerator water cooler will pass through the cold air core and the blower to cool the passenger compartment;
[0019] Continue to determine whether the battery pack needs to be cooled. If the battery pack needs to be cooled, the water outlet of the cooler flows toward the water inlet of the battery pack through the first interface, the third interface, the fifth valve port and the ninth valve port of the second three-way valve. At the water inlet of the battery pack, the one-way valve is used to control the amount of water flowing from the water outlet of the battery pack to the water inlet of the battery pack, thereby controlling the temperature of the battery pack. The water outlet of the battery pack returns the water to the cooler through the first valve port and the second valve port of the multi-way valve.
[0020] Furthermore, the operation method further includes:
[0021] Confirm that the car refrigerator has heating demand, and continue to confirm whether the passenger compartment needs heating. If the passenger compartment does not need heating, the hot water from the water-cooled condenser flows through the first and third interfaces of the first three-way valve to the heater core and the refrigerator radiator. At this time, the blower does not work, and the hot water from the heater core passes through the refrigerator radiator, and the refrigerator fan blows the hot air into the car refrigerator for heating. At this time, the cold and heat storage blocks store heat, and finally, it flows into the water inlet of the water-cooled condenser; if the ambient temperature is -15℃ or above, under the action of the second electronic water pump, the water outlet of the cooler passes through the first interface of the second three-way valve. The water flows from the outlet of the cooler to the motor / electrical component through the first and third interfaces of the second three-way valve and the fifth and seventh interfaces of the multi-way valve, absorbing heat from the air and the motor / electrical component, and then returns the water having absorbed the heat to the water inlet of the cooler through the eighth and second interfaces of the multi-way valve. If the ambient temperature is below -15°C, under the action of the second electronic water pump, the water outlet of the cooler flows through the first and third interfaces of the second three-way valve and the fifth and sixth interfaces of the multi-way valve toward the motor / electrical component, and then returns the water having absorbed the heat to the water inlet of the cooler through the eighth and second interfaces of the multi-way valve.
[0022] If the passenger compartment needs to be heated, the blower will work and the hot water will pass through the heater core and the blower to heat the passenger compartment;
[0023] Continue to determine whether the battery pack needs heating. If the battery pack needs heating, the hot water from the water-cooled condenser flows toward the water inlet of the battery pack through the first interface and the second interface of the first three-way valve, and then through the fourth valve port and the ninth valve port of the multi-way valve. At the water inlet of the battery pack, the amount of water flowing from the water outlet of the battery pack to the water inlet of the battery pack is controlled by a one-way valve to ensure that the temperature of the water inlet of the battery pack does not exceed 50 degrees. The water outlet of the battery pack returns the water to the water inlet of the water-cooled condenser through the first valve port and the third valve port of the multi-way valve.
[0024] The present invention has the following beneficial effects:
[0025] (1) The present invention integrates the refrigerator water cooler and refrigerator radiator into the secondary circuit thermal management system of the vehicle, thereby achieving cooling and heating of the vehicle refrigerator without adding an onboard refrigerator compressor;
[0026] (2) The vehicle refrigerator of the present invention is provided with a cold and heat storage block, which can still provide cooling and heating when the cold air core and the warm air core are not in operation;
[0027] (3) The present invention can connect different pipelines according to the ambient temperature, passenger compartment, battery pack and vehicle refrigerator thermal management requirements to maximize energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1It is a schematic diagram of the principle of the thermal management system in Example 1.
[0029] Figure 2 Schematic diagram of the connection mode of the multi-way valve in Example 1.
[0030] Figure 3 This is a schematic diagram of the second connection mode of the multi-way valve in Example 1.
[0031] Figure 4 Schematic diagram of the third connection mode of the multi-way valve in Example 1.
[0032] Figure 5 This is a flow chart of the overall operating method in Example 2.
[0033] Figure 6 This is a schematic diagram of the principle of the thermal management system of working condition 1 in Example 2.
[0034] Figure 7 This is a schematic diagram of the principle of the thermal management system of working condition 2 in Example 2.
[0035] Figure 8 This is a schematic diagram of the principle of the thermal management system of working condition three in Example 2.
[0036] Figure 9 This is a schematic diagram of the principle of the thermal management system of working condition 4 in Example 2.
[0037] Figure 10 This is a schematic diagram of the principle of the thermal management system of working condition 5 in Example 2.
[0038] Figure 11 This is a schematic diagram of the principle of the thermal management system of working condition six in Example 2.
[0039] Figure 12 This is a schematic diagram of the principle of the thermal management system of working condition seven in Example 2.
[0040] Figure 13 This is a schematic diagram of the principle of the thermal management system of working condition eight in Example 2.
[0041] Figure 14 This is a schematic diagram of the principle of the thermal management system of working condition nine in Example 2. DETAILED DESCRIPTION
[0042] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments, but this embodiment is not intended to limit the present invention. All similar structures and similar variations of the present invention should be included in the scope of protection of the present invention. The semicolons in the present invention represent the relationship of and, and the English letters in the present invention are case-sensitive.
[0043] Example 1
[0044] like Figure 1 As shown, the present invention provides an integrated thermal management system for an electric vehicle refrigerator, comprising a water-cooled condenser 1, a first electronic water pump 2, an onboard refrigerator 3, a refrigerator radiator 4, a refrigerator water cooler 5, a refrigerator fan 6, a cold air core 7, a warm air core 8, a cooler 9, a second electronic water pump 10, a blower 11, a multi-way valve 12, a first three-way valve 13, a second three-way valve 14, a water heater 15, a third electronic water pump 16, a battery pack 17, a one-way valve 18, a radiator 19, a cooling fan 20, and a motor / electrical component 21; the onboard refrigerator 3 is provided with a cold and heat storage module 31, which is configured to store heat in the vehicle. The onboard refrigerator's refrigeration circuit and heating circuit cool and heat the interior of the onboard refrigerator while simultaneously storing cold and heat. A refrigerator radiator 4 and a refrigerator water cooler 5 are located at the air inlet 32 and return air outlet 33 of the onboard refrigerator 3. The refrigerator fan 6 is configured to blow the hot air from the refrigerator radiator 4 into the interior of the onboard refrigerator 3 and to blow the heat from the interior of the onboard refrigerator 3 into the refrigerator water cooler 5. The blower 11 is configured to deliver cooled and heated air from the cooling air core 7 and heating air core 8 into the passenger compartment. The water heater 15 is located between the first interface and the water outlet of the water-cooled condenser 1. The cooling fan is located on one side of the radiator.
[0045] The cooler 9, refrigerator water cooler 5, cold air core 7 and second electronic water pump 10 are connected to form a vehicle refrigerator refrigeration circuit; the water-cooled condenser 1, warm air core 8, refrigerator radiator 4 and first electronic water pump 2 are connected to form a vehicle refrigerator heating circuit.
[0046] The multi-way valve 12 includes a first valve port 121 , a second valve port 122 , a third valve port 123 , a fourth valve port 124 , a fifth valve port 125 , a sixth valve port 126 , a seventh valve port 127 , an eighth valve port 128 and a ninth valve port 129 .
[0047] Among them, the first three-way valve 13 includes a first interface 131, a second interface 132 and a third interface 133, the first interface 131 is connected to the water outlet of the water-cooled condenser 1, the second interface 132 is connected to the fourth valve port 124 of the multi-way valve 12, and the third interface 133 is connected to the water inlet of the heater core 8.
[0048] Among them, the second three-way valve 14 includes a first interface 141, a second interface 142 and a third interface 143. The first interface 141 is connected to the water outlet of the cooler 9, and the second interface 142 is connected to the water inlet of the refrigerator water cooler 5; the third interface 143 is connected to the fifth valve port 125 of the multi-way valve 12.
[0049] The water inlet of the third electronic water pump 16 is connected to the ninth valve port 129 of the multi-way valve 12 and the one-way valve 18, respectively. The water outlet of the third electronic water pump 16 is connected to the water inlet of the battery pack 17. The water outlet of the battery pack 17 is connected to the one-way valve 18 and the first valve port 121 of the multi-way valve 12, respectively. The one-way valve 18 is configured to mix the water from the battery pack 17 outlet with the water inlet of the multi-way valve 12 to adjust the temperature of the water entering the water inlet of the battery pack 17. The seventh valve port 127 of the multi-way valve 12 is connected to the water inlet of the radiator 19. The water outlet of the radiator 19 and the sixth valve port 126 of the multi-way valve 12 are respectively connected to the water inlet of the motor / electrical device 21. The water outlet of the motor / electrical device 21 is connected to the eighth valve port of the multi-way valve.
[0050] Preferably, the multi-way valve 12 has at least three connection modes, specifically:
[0051] like Figure 2 As shown, in the first connection mode, the first valve port 121 is connected to the second valve port 122, the third valve port 123 is connected to the eighth valve port 128, the fourth valve port 124 is connected to the seventh valve port 127, and the fifth valve port 125 is connected to the ninth valve port 129;
[0052] like Figure 3 As shown, in the second connection mode, the first valve port 121 is connected to the third valve port 123, the second valve port 122 is connected to the eighth valve port 128, the fourth valve port 124 is connected to the ninth valve port 129, and the fifth valve port 125 is connected to the seventh valve port 127;
[0053] like Figure 4 As shown, in the third connection mode, the first valve port 121 is connected to the third valve port 123 , the second valve port 122 is connected to the eighth valve port 128 , the fourth valve port 124 is connected to the ninth valve port 129 , and the fifth valve port 125 is connected to the sixth valve port 126 .
[0054] Example 2
[0055] like Figure 5 As shown, this embodiment provides an operating method of an integrated thermal management system for an electric vehicle refrigerator, the operating method comprising:
[0056] After confirming that the vehicle refrigerator 3 has a cooling demand, it is further confirmed whether the passenger compartment needs cooling. If the passenger compartment does not need cooling, under the action of the second electronic water pump, the water outlet of the cooler 9 flows to the refrigerator water cooler 5 and the cold air core 7 through the first interface 141 and the second interface 142 of the second three-way valve, and the refrigerator fan 6 blows the heat inside the vehicle refrigerator 3 into the refrigerator water cooler 5. The cold water passes through the refrigerator water cooler 5 to take away the heat, so that the internal space of the vehicle refrigerator 3 is cooled. The cold and heat storage module 31 is storing cold at this time; finally, the water flows into the cooler 9; under the action of the first electronic water pump 2, the hot water from the water-cooled condenser 1 flows to the radiator 19 and the motor / electrical component 21 through the first interface 131 and the second interface 132 of the first three-way valve and the fourth valve port 124 and the seventh valve port 127 of the multi-way valve, and finally returns to the water-cooled condenser 1 through the third valve port 123 and the eighth valve port 128 of the multi-way valve;
[0057] If the passenger compartment needs to be cooled, the blower 11 will work, and the cold water from the refrigerator water cooler 5 will pass through the cold air core 7 and the blower 11 to cool the passenger compartment;
[0058] Continue to determine whether the battery pack 17 needs to be refrigerated. If the battery pack 17 needs to be refrigerated, the water outlet of the cooler 9 flows toward the water inlet of the battery pack 17 through the first interface 141, the third interface 143 of the second three-way valve, the fifth valve port 125 and the ninth valve port 129 of the multi-way valve. At the water inlet of the battery pack 17, the one-way valve 18 is used to control the amount of water flowing from the water outlet of the battery pack 17 to the water inlet of the battery pack 17, thereby controlling the temperature of the battery pack 17. The water outlet of the battery pack 17 returns the water to the cooler 9 through the first valve port 121 and the second valve port 122 of the multi-way valve.
[0059] Confirm that the vehicle refrigerator 3 has a heating demand, and continue to confirm whether the passenger compartment needs heating. If the passenger compartment does not need heating, the hot water from the water-cooled condenser 1 flows through the first interface 131 and the third interface 133 of the first three-way valve to the heater core 8 and the refrigerator radiator 4. At this time, the blower 11 does not work, and the hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally flows into the water inlet of the water-cooled condenser 1; if the ambient temperature is -15°C or above, under the action of the second electronic water pump 10, the water outlet of the cooler 9 passes through the first interface 141 and the third interface 143 of the second three-way valve to and the fifth valve port 125 and the seventh valve port 127 of the multi-way valve toward the radiator 19 and the motor / electrical component 21, absorbing heat from the air and the motor / electrical component 21, and then returning the heat-absorbing water to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve; if the ambient temperature is below -15°C, under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows toward the motor / electrical component 21 through the first port 141 and the third port 143 of the second three-way valve and the fifth valve port 125 and the sixth valve port 126 of the multi-way valve, and then returns the heat-absorbing water to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve;
[0060] If the passenger compartment needs to be heated, the blower 11 will work, and the hot water will pass through the heater core 8 and the blower 11 to heat the passenger compartment;
[0061] Continue to determine whether the battery pack 17 needs to be heated. If the battery pack 17 needs to be heated, the hot water from the water-cooled condenser 1 flows toward the water inlet of the battery pack 17 through the first interface 131 and the second interface 132 of the first three-way valve and the fourth valve port 124 and the ninth valve port 129 of the multi-way valve. At the water inlet of the battery pack 17, the one-way valve 18 is used to control the amount of water flowing from the water outlet of the battery pack 17 to the water inlet of the battery pack 17 to ensure that the water inlet temperature of the battery pack 17 does not exceed 50 degrees. The water outlet of the battery pack 17 returns the water to the water inlet of the water-cooled condenser 1 through the first valve port 121 and the third valve port 123 of the multi-way valve.
[0062] Specifically, according to the above, it can be divided into nine working conditions. For each working condition, the specific operation method is as follows:
[0063] like Figure 6 As shown, in working condition 1, the ambient temperature is 25°C or above, and both the passenger compartment and the onboard refrigerator 3 need to be cooled. The connection mode of the thermal management system is:
[0064] The connection mode of the multi-way valve 12 is mode 1. The first interface 131 of the first three-way valve 13 is connected to the second interface 132, and the first interface 141 of the second three-way valve is connected to the second interface 142. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the second interface 142 of the second three-way valve to the refrigerator water cooler 5 and the cold air core 7. The refrigerator fan 6 blows the heat inside the car refrigerator 3 into the refrigerator water cooler 5, and the cold water takes away the heat through the refrigerator water cooler 5 to cool the internal space of the car refrigerator 3. The cold heat storage module 31 is storing cold at this time; the cold water from the refrigerator water cooler 5 is used to cool the passenger compartment through the cold air core 7 and the blower 11, and finally the water flows into the cooler 9; under the action of the first electronic water pump 2, the hot water from the water-cooled condenser 1 flows through the first interface 131 and the second interface 132 of the first three-way valve 13 and the fourth valve port 124 and the seventh valve port 127 of the multi-way valve 12 to the radiator 19 and the motor / electrical component 21, and finally returns to the water-cooled condenser 1 through the third valve port 123 and the eighth valve port 128 of the multi-way valve 12.
[0065] like Figure 7 As shown, in working condition 2, when the ambient temperature is 25°C or above and only the vehicle refrigerator 3 needs to be cooled, the connection mode of the thermal management system is:
[0066] The connection mode of the multi-way valve 12 is mode 1. The first interface 131 of the first three-way valve 13 is connected to the second interface 132, and the first interface 141 of the second three-way valve is connected to the second interface 142. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the second interface 142 of the second three-way valve to the refrigerator water cooler 5 and the cold air core 7. The refrigerator fan 6 blows the heat inside the car refrigerator 3 into the refrigerator water cooler 5, and the cold water takes away the heat through the refrigerator water cooler 5 to make the internal space of the car refrigerator 3 cool. The cold storage and heat storage module 31 is storing cold at this time; the cold water coming out of the refrigerator water cooler 5 returns to the cooler 9 through the cold air core 7, and the blower 11 does not work during this process; under the action of the first electronic water pump 2, the hot water coming out of the water-cooled condenser 1 flows through the first interface 131 and the second interface 132 of the first three-way valve 13 and the fourth valve port 124 and the seventh valve port 127 of the multi-way valve 12 to the radiator 19 and the motor / electrical component 21, and finally returns to the water-cooled condenser 1 through the third valve port 123 and the eighth valve port 128 of the multi-way valve 12.
[0067] like Figure 8 As shown, in working condition three, the ambient temperature is 25°C or above, there is no cooling demand in the passenger compartment, but both the battery pack 12 and the onboard refrigerator have cooling demand. The connection mode of the thermal management system is:
[0068] The connection mode of the multi-way valve 12 is mode 1, the first interface 131 of the first three-way valve 13 is connected to the second interface 132, the first interface 141 of the second three-way valve is connected to the second interface 142 and the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the second interface 142 of the second three-way valve to the refrigerator water cooler 5 and the cold air core 7, and the refrigerator fan 6 blows the heat inside the vehicle refrigerator 3 into the refrigerator water cooler 5, and the cold water passes through the refrigerator water cooler 5 to take away the heat so that the internal space of the vehicle refrigerator 3 is cooled, and the cold and heat storage module 31 is storing cold at this time; the cold water coming out of the refrigerator water cooler 5 returns to the cooler 9 through the cold air core 7, and the blower 11 does not work in this process; the water outlet of the cooler 9 passes through the first interface 141 and the second interface 142 of the second three-way valve The three interfaces 143, the fifth valve port 125 and the ninth valve port 129 of the multi-way valve 12 flow toward the water inlet of the battery pack 17. At the water inlet of the battery pack 17, the one-way valve 18 controls the amount of water flowing from the water outlet of the battery pack 17 to the water inlet of the battery pack 17, thereby controlling the temperature of the water flowing through the battery pack 17. The water outlet of the battery pack 17 returns the water to the cooler 9 through the first valve port 121 and the second valve port 122 of the multi-way valve 12; under the action of the first electronic water pump 2, the hot water coming out of the water-cooled condenser 1 flows to the radiator 19 and the motor / electrical component 21 through the first interface 131 and the second interface 132 of the first three-way valve 13 and the fourth valve port 124 and the seventh valve port 127 of the multi-way valve 12, and finally returns to the water-cooled condenser through the third valve port 123 and the eighth valve port 128 of the multi-way valve 12.
[0069] like Figure 9 As shown, in working condition 4, the ambient temperature is -15°C or above, the passenger compartment needs to be heated, and the onboard refrigerator 3 also needs to be heated. The connection method of the thermal management system is:
[0070] The connection mode of the multi-way valve 12 is mode 2. The first interface 131 of the first three-way valve 13 is connected to the third interface 132, and the first interface 141 of the second three-way valve is connected to the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the seventh valve port 127 of the multi-way valve 12 to the radiator 19 and the motor / electrical component 21, absorbing the heat of the air and the motor / electrical component 21, and then the water that absorbs the heat is discharged. The hot water returns to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve 12; the hot water from the water-cooled condenser 1 flows to the heater core 8 and the refrigerator radiator 4 through the first interface 131 and the third interface 133 of the first three-way valve 13, and the hot water is used to heat the passenger compartment through the heater core 8 and the blower 11. The hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally, it flows into the water inlet of the water-cooled condenser 1.
[0071] like Figure 10 As shown, in working condition 5, the ambient temperature is below -15°C, the passenger compartment needs to be heated, and the onboard refrigerator 3 also needs to be heated. The connection mode of the thermal management system is:
[0072] The connection mode of the multi-way valve 12 is mode three. The first interface 131 of the first three-way valve 13 is connected to the third interface 133, and the first interface 141 of the second three-way valve is connected to the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the sixth valve port 126 of the multi-way valve 12 toward the motor / electrical device 21, absorbing the heat of the motor / electrical device 21, and then the water that absorbs the heat passes through the multi-way valve. The eighth valve port 128 and the second valve port 122 of 12 return to the water inlet of the cooler 9; the hot water from the water-cooled condenser 1 flows to the heater core 8 and the refrigerator radiator 4 through the first interface 131 and the third interface 133 of the first three-way valve 13, and the hot water is heated to the passenger compartment through the heater core 8 and the blower 11. The hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally, it flows into the water inlet of the water-cooled condenser 1.
[0073] like Figure 11 As shown, in working condition 6, the ambient temperature is -15℃ or above, there is no heating demand in the passenger compartment, and the onboard refrigerator 3 has heating demand. The connection mode of the thermal management system is:
[0074] The connection mode of the multi-way valve 12 is mode 2. The first interface 131 of the first three-way valve 13 is connected to the third interface 133, and the first interface 141 of the second three-way valve is connected to the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the seventh valve port 127 of the multi-way valve 12 to the radiator 19 and the motor / electrical component 21, absorbing the heat of the air and the motor / electrical component 21, and then The hot water with heat returns to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve 12; the hot water from the water-cooled condenser 1 flows to the heater core 8 and the refrigerator radiator 4 through the first interface 131 and the third interface 133 of the first three-way valve 13. At this time, the blower 11 does not work, and the hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally flows into the water inlet of the water-cooled condenser 1.
[0075] like Figure 12 As shown, in working condition seven, the ambient temperature is below -15°C, there is no heating demand in the passenger compartment, and the onboard refrigerator 3 has heating demand. The connection mode of the thermal management system is:
[0076] The connection mode of the multi-way valve 12 is mode three. The first interface 131 of the first three-way valve 13 is connected to the third interface 133, and the first interface 141 of the second three-way valve is connected to the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the sixth valve port 126 of the multi-way valve 12 toward the motor / electrical component 21, absorbs the heat of the motor / electrical component 21, and then dissipates the absorbed heat. The water returns to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve 12; the hot water from the water-cooled condenser 1 flows to the heater core 8 and the refrigerator radiator 4 through the first interface 131 and the third interface 133 of the first three-way valve 13. At this time, the blower 11 is not working. The hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally flows into the water inlet of the water-cooled condenser 1.
[0077] like Figure 13 As shown, in working condition eight, the ambient temperature is -15°C or above, there is no heating demand in the passenger compartment, but the battery pack 17 and the onboard refrigerator 3 have heating demand, and the connection mode of the thermal management system is:
[0078] The connection mode of the multi-way valve 12 is mode 2. The first interface 131 of the first three-way valve 13 is connected to the second interface 132 and the third interface 133. The first interface 141 of the second three-way valve is connected to the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the seventh valve port 127 of the multi-way valve 12 toward the radiator 19 and the motor / electrical component 21, absorbing heat from the air and the motor / electrical component 21, and then returning the water that has absorbed the heat to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve 12; the hot water from the water-cooled condenser 1 flows through the first interface 131 and the third interface 133 of the first three-way valve 13 to the heater core 8 and the refrigerator radiator 4 Flow, at this time, the blower 11 does not work, the hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat and returns the water to the water inlet of the water-cooled condenser 1; the hot water from the water-cooled condenser 1 passes through the first interface 131 and the second interface 132 of the first three-way valve 13 and the fourth valve port 124 and the ninth valve port 129 of the multi-way valve 12 to flow toward the water inlet of the battery pack 17. At the water inlet of the battery pack 17, the one-way valve 18 controls the amount of water flowing from the water outlet of the battery pack 17 to the water inlet of the battery pack 17 to ensure that the water inlet temperature of the battery pack 17 does not exceed 50 degrees. The water outlet of the battery pack 17 returns the water to the water inlet of the water-cooled condenser 1 through the first valve port 121 and the third valve port 123 of the multi-way valve 12.
[0079] like Figure 14 As shown, in working condition nine, the ambient temperature is below -15°C, there is no heating demand for the passenger compartment, but the battery pack 17 and the onboard refrigerator 3 have heating demand, and the connection mode of the thermal management system is:
[0080] The connection mode of the multi-way valve 12 is mode three. The first interface 131 of the first three-way valve 13 is connected with the second interface 132 and the third interface 133, and the first interface 141 of the second three-way valve is connected with the third interface 143. Under the action of the second electronic water pump 10, the water outlet of the cooler 9 flows toward the motor / electrical component 21 through the first interface 141 and the third interface 143 of the second three-way valve and the fifth valve port 125 and the sixth valve port 126 of the multi-way valve 12, absorbs the heat of the motor / electrical component 21, and then returns the water with the absorbed heat to the water inlet of the cooler 9 through the eighth valve port 128 and the second valve port 122 of the multi-way valve 12; the hot water from the water-cooled condenser 1 flows to the heater core 8 and the refrigerator radiator 4 through the first interface 131 and the third interface 133 of the first three-way valve 13. At this time When the blower 11 is not working, the hot water from the heater core 8 passes through the refrigerator radiator 4, and the refrigerator fan 6 blows the hot air into the vehicle refrigerator 3 for heating. At this time, the cold and heat storage block 31 stores heat, and finally flows into the water inlet of the water-cooled condenser 1; the hot water from the water-cooled condenser 1 passes through the first interface 131 and the second interface 132 of the first three-way valve 13 and the fourth valve port 124 and the ninth valve port 129 of the multi-way valve 12 to flow toward the water inlet of the battery pack 17. At the water inlet of the battery pack 17, the one-way valve 18 controls the amount of water flowing from the water outlet of the battery pack 17 to the water inlet of the battery pack 17 to ensure that the water inlet temperature of the battery pack 17 does not exceed 50 degrees. The water outlet of the battery pack 17 returns the water to the water inlet of the water-cooled condenser 1 through the first valve port 121 and the third valve port 123 of the multi-way valve 12.
[0081] The present invention integrates the refrigerator water cooler 5 and the refrigerator radiator 4 into the secondary circuit thermal management system of the entire vehicle, thereby achieving cooling and heating of the vehicle refrigerator without adding a vehicle refrigerator compressor; a cold and heat storage block 31 is provided in the vehicle refrigerator 3, which can still provide cooling and heating when the cold air core 7 and the warm air core 8 are not in operation; different pipelines can be connected according to the ambient temperature, passenger compartment, battery pack and vehicle refrigerator thermal management requirements to maximize energy utilization.
[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
Claims
1. An integrated thermal management system for an electric vehicle refrigerator, characterized in that: Including a water-cooled condenser, a first electronic water pump, a vehicle refrigerator, a refrigerator radiator, a refrigerator water cooler, a refrigerator fan, a cold air core, a warm air core, a cooler, a second electronic water pump, a multi-way valve, a first three-way valve, a second three-way valve, a third electronic water pump, a battery pack, a one-way valve, a radiator, a cooling fan, and motors / electrical components; The first electronic water pump is in communication with a water-cooled condenser, the water outlet of the water-cooled condenser is connected to the heater core via a first three-way valve, the water outlet of the water-cooled condenser is in communication with the water inlet of the third electronic water pump, the water inlet of the radiator, and the motor / electrical components via the first three-way valve and a multi-way valve; the water outlets of the motor / electrical components and the battery pack are in communication with the water inlet of the first electronic water pump via the multi-way valve; The heater core is connected to the refrigerator radiator and the water inlet of the first electronic water pump in sequence; the water outlet of the third electronic water pump is connected to the water inlet of the battery pack, the water inlet of the one-way valve is connected to the water outlet of the battery pack, and the water outlet of the one-way valve is connected to the water inlet of the third electronic water pump; the radiator is connected to the motor / electrical components, and the cooling fan is arranged on one side of the radiator; The cooler is connected to the refrigerator water cooler, the cold air core and the second electronic water pump in sequence through a second three-way valve, and the second electronic water pump is connected to the cooler; the cooler is connected to the water inlet of the third electronic water pump, the water inlet of the radiator and the motor / electrical component through a second three-way valve and a multi-way valve; the water outlet of the motor / electrical component and the battery pack is connected to the water inlet of the second electronic water pump through a multi-way valve; a refrigerator radiator and a refrigerator water cooler are provided at the air inlet and return air outlet of the vehicle refrigerator, and the refrigerator fan is configured to blow the hot air emitted by the refrigerator radiator into the interior of the vehicle refrigerator and to blow the heat inside the vehicle refrigerator into the refrigerator water cooler.
2. The integrated thermal management system for an electric vehicle refrigerator according to claim 1, characterized in that: The thermal management system further includes a water heater, which is disposed between the first three-way valve and a water outlet of the water-cooled condenser.
3. The integrated thermal management system for an electric vehicle refrigerator according to claim 1, characterized in that: The thermal management system further includes a blower configured to deliver the cooled / heated air of the cooling / heating core into the passenger compartment.
4. The integrated thermal management system for an electric vehicle refrigerator according to claim 1, characterized in that: The vehicle refrigerator is provided with a cold and heat storage module, which is configured to store cold and heat while the vehicle refrigerator refrigeration circuit / vehicle refrigerator heating circuit cools / heats the interior space of the vehicle refrigerator.
5. The integrated thermal management system for an electric vehicle refrigerator according to claim 1, characterized in that: The multi-way valve includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port and a ninth valve port; the first valve port is connected to the water outlet of the battery pack, the second valve port is connected to the water inlet of the second electronic water pump; the third valve port is connected to the water inlet of the first electronic water pump; the fourth valve port is connected to the first interface of the first three-way valve; the fifth valve port is connected to the third interface of the second three-way valve; the sixth valve port is connected to the water inlet of the motor / electrical component; the seventh valve port is connected to the water inlet of the radiator; the eighth valve port is connected to the water inlet of the third electronic water pump; and the ninth valve port is connected to the water outlet of the battery pack.
6. The integrated thermal management system for an electric vehicle refrigerator according to claim 1, characterized in that: The multi-way valve has at least three connection modes. In the first connection mode, the first valve port is connected to the second valve port, the third valve port is connected to the eighth valve port, the fourth valve port is connected to the seventh valve port, and the fifth valve port is connected to the ninth valve port; In the second connection mode, the first valve port is connected to the third valve port, the second valve port is connected to the eighth valve port, the fourth valve port is connected to the ninth valve port, and the fifth valve port is connected to the seventh valve port; In the third connection mode, the first valve port is connected to the third valve port, the second valve port is connected to the eighth valve port, the fourth valve port is connected to the ninth valve port, and the fifth valve port is connected to the sixth valve port.
7. A method for operating an integrated thermal management system for an electric vehicle refrigerator, characterized in that: The operating method is applicable to the thermal management system according to any one of claims 1 to 6, and the operating method includes: After confirming that the vehicle refrigerator has a cooling demand, it is further confirmed whether the passenger compartment needs cooling. If the passenger compartment does not need cooling, under the action of the second electronic water pump, the water outlet of the cooler flows to the refrigerator water cooler and the cold air core through the first interface and the second interface of the second three-way valve, and the refrigerator fan blows the heat inside the vehicle refrigerator into the refrigerator water cooler. The cold water passes through the refrigerator water cooler to take away the heat and cool the internal space of the vehicle refrigerator. The cold and heat storage module is storing cold at this time; finally, the water flows into the cooler; under the action of the first electronic water pump, the hot water coming out of the water-cooled condenser flows to the radiator and the motor / electrical components through the first interface and the second interface of the first three-way valve and the fourth valve port and the seventh valve port of the multi-way valve, and finally returns to the water-cooled condenser through the third valve port and the eighth valve port of the multi-way valve; If the passenger compartment needs to be cooled, the blower will work, and the cold water from the refrigerator water cooler will pass through the cold air core and the blower to cool the passenger compartment; Continue to determine whether the battery pack needs to be cooled. If the battery pack needs to be cooled, the water outlet of the cooler flows toward the water inlet of the battery pack through the first interface, the third interface, the fifth valve port and the ninth valve port of the second three-way valve. At the water inlet of the battery pack, the one-way valve is used to control the amount of water flowing from the water outlet of the battery pack to the water inlet of the battery pack, thereby controlling the temperature of the battery pack. The water outlet of the battery pack returns the water to the cooler through the first valve port and the second valve port of the multi-way valve.
8. The method for operating an integrated thermal management system for an electric vehicle refrigerator according to claim 7, characterized in that: The operation method further includes: Confirm that the car refrigerator has heating demand, and continue to confirm whether the passenger compartment needs heating. If the passenger compartment does not need heating, the hot water from the water-cooled condenser flows through the first and third interfaces of the first three-way valve to the heater core and the refrigerator radiator. At this time, the blower does not work, and the hot water from the heater core passes through the refrigerator radiator, and the refrigerator fan blows the hot air into the car refrigerator for heating. At this time, the cold and heat storage blocks store heat, and finally, it flows into the water inlet of the water-cooled condenser; if the ambient temperature is -15℃ or above, under the action of the second electronic water pump, the water outlet of the cooler passes through the first interface of the second three-way valve. The water flows from the outlet of the cooler to the motor / electrical component through the first and third interfaces of the second three-way valve and the fifth and seventh interfaces of the multi-way valve, absorbing heat from the air and the motor / electrical component, and then returns the water having absorbed the heat to the water inlet of the cooler through the eighth and second interfaces of the multi-way valve. If the ambient temperature is below -15°C, under the action of the second electronic water pump, the water outlet of the cooler flows through the first and third interfaces of the second three-way valve and the fifth and sixth interfaces of the multi-way valve toward the motor / electrical component, and then returns the water having absorbed the heat to the water inlet of the cooler through the eighth and second interfaces of the multi-way valve. If the passenger compartment needs to be heated, the blower will work and the hot water will pass through the heater core and the blower to heat the passenger compartment; Continue to determine whether the battery pack needs heating. If the battery pack needs heating, the hot water from the water-cooled condenser flows toward the water inlet of the battery pack through the first interface and the second interface of the first three-way valve, and then through the fourth valve port and the ninth valve port of the multi-way valve. At the water inlet of the battery pack, the amount of water flowing from the water outlet of the battery pack to the water inlet of the battery pack is controlled by a one-way valve to ensure that the temperature of the water inlet of the battery pack does not exceed 50 degrees. The water outlet of the battery pack returns the water to the water inlet of the water-cooled condenser through the first valve port and the third valve port of the multi-way valve.