Refrigerating and heating system for commercial vehicle and vehicle

Abstract

The invention belongs to the technical field of vehicles, and discloses a commercial vehicle refrigerating and heating system and a vehicle. The commercial vehicle refrigerating and heating system comprises a cold water tank, a hot water tank, a heat conduction piece, a first four-way valve and a second four-way valve, the heat conduction piece is arranged between the cold water tank and the hot water tank, the refrigerating and heating efficiency is high, noise is low, and an A1 connector communicates with one of an A2 connector and an A4 connector; the A3 interface is communicated with one of the A2 interface and the A4 interface, the A1 interface is connected with a hot water tank, the A2 interface is connected with a water inlet of an electric drive system, the A3 interface is connected with a cold water tank, the A4 interface is connected with a water inlet of a battery system, the B1 interface is communicated with one of the B3 interface and the B4 interface, the B2 interface is communicated with one of the B3 interface and the B4 interface, and the B1 interface is connected with a water outlet of the battery system. The interface B2 is connected with a water outlet of the electric drive system, the interface B3 is connected with the cold water tank, the interface B4 is connected with the hot water tank, cold water or hot water is pumped in according to the refrigerating and heating requirements of the battery system and the electric drive system, various requirements can be met, and the system is diversified.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a commercial vehicle cooling and heating system and the vehicle. Background Art

[0002] Automotive cooling systems are devices used to regulate and maintain the temperature of the battery and electric drive systems in vehicles. Their primary function is to ensure the vehicle maintains an appropriate temperature under all operating conditions, preventing overheating and thereby protecting key components and improving driving comfort. Cooling systems typically use compressors, while heating systems typically use resistance heaters. These systems are noisy and, due to complex piping, have low cooling and heating efficiency.

[0003] Therefore, there is an urgent need for a commercial vehicle cooling and heating system and a vehicle to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a cooling and heating system for commercial vehicles, which pumps cold water or hot water according to the cooling and heating requirements of the battery system and the electric drive system, and can meet various needs. When the cooling and heating requirements are relatively small, the cooling and heating efficiency of the heat conductor is high and the noise is low.

[0005] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] The commercial vehicle cooling and heating system is used to cool and heat the battery system and electric drive system. The commercial vehicle cooling and heating system includes:

[0007] a cold water tank, the cold water tank being used to cool the battery system and the electric drive system;

[0008] A hot water tank; the hot water tank is used to heat the battery system and the electric drive system;

[0009] a heat conducting member disposed between the cold water tank and the hot water tank, one end of the heat conducting member being used to cool the cold water tank, and the other end of the heat conducting member being used to heat the hot water tank;

[0010] a first four-way valve, wherein the first four-way valve has an A1 interface, an A2 interface, an A3 interface, and an A4 interface, wherein the A1 interface is connected to either the A2 interface or the A4 interface, and the A3 interface is connected to either the A2 interface or the A4 interface, wherein the A1 interface is connected to the hot water tank, the A2 interface is connected to the water inlet of the electric drive system, the A3 interface is connected to the cold water tank, and the A4 interface is connected to the water inlet of the battery system;

[0011] The second four-way valve has a B1 interface, a B2 interface, a B3 interface and a B4 interface. The B1 interface is connected to one of the B3 interface and the B4 interface, and the B2 interface is connected to one of the B3 interface and the B4 interface. The B1 interface is connected to the water outlet of the battery system, the B2 interface is connected to the water outlet of the electric drive system, the B3 interface is connected to the cold water tank, and the B4 interface is connected to the hot water tank.

[0012] Preferably, the commercial vehicle cooling and heating system further comprises a hot water pump, the input end of the hot water pump is connected to the water outlet of the hot water tank, and the output end of the hot water pump is connected to the A1 interface.

[0013] Preferably, the commercial vehicle cooling and heating system further includes a cold water pump, the input end of the cold water pump is connected to the water outlet of the cold water tank, and the output end of the cold water pump is connected to the B3 interface.

[0014] Preferably, the commercial vehicle cooling and heating system further includes a radiator, an input end of the radiator is connected to the A2 interface, and an output end of the radiator is connected to the electric drive system.

[0015] Preferably, the radiator includes a bracket, a cooling fan and cooling fins. The cooling fan is arranged on one side of the bracket and is used for heat exchange with the coolant. The cooling fins are arranged on the other side of the bracket and are used for heat exchange with the air.

[0016] Preferably, there are multiple fans, and the multiple fans are distributed in a matrix.

[0017] Preferably, the heat conducting member is configured as a semiconductor heat conducting sheet.

[0018] Preferably, the commercial vehicle cooling and heating system further comprises a frame, the cold water tank and the hot water tank are both mounted on the frame, and the frame is fixedly mounted on the vehicle frame.

[0019] Preferably, the commercial vehicle cooling and heating system further includes a heater, an input end of the heater is connected to the A4 interface, and an output end of the heater is connected to the battery system.

[0020] The present invention also provides a vehicle, comprising a vehicle frame and the above-mentioned commercial vehicle cooling and heating system, wherein the commercial vehicle cooling and heating system is fixedly mounted on the vehicle frame.

[0021] The beneficial effects of the present invention are:

[0022] The commercial vehicle cooling and heating system provided by the present invention has a heat conductor disposed between a cold water tank and a hot water tank, one end of the heat conductor being used to cool the cold water tank, and the other end of the heat conductor being used to heat the hot water tank. Compared with traditional compressor cooling and resistance heater heating, the heat conductor has high cooling and heating efficiency and low noise when the cooling and heating demand is small. The first four-way valve has an A1 interface, an A2 interface, an A3 interface, and an A4 interface. The A1 interface is connected to either the A2 interface or the A4 interface, and the A3 interface is connected to either the A2 interface or the A4 interface. The A1 interface is connected to the hot water tank, the A2 interface is connected to the water inlet of the electric drive system, the A3 interface is connected to the cold water tank, and the A4 interface is connected to the water inlet of the battery system. The second four-way valve has ports B1, B2, B3, and B4. Port B1 connects to either B3 or B4, and port B2 connects to either B3 or B4. Port B1 is connected to the water outlet of the battery system, port B2 is connected to the water outlet of the electric drive system, port B3 is connected to the cold water tank, and port B4 is connected to the hot water tank. Cold or hot water is pumped in according to the cooling and heating needs of the battery and electric drive systems, meeting various needs and enabling system diversification.

[0023] The vehicle provided by the present invention includes a vehicle frame and a commercial vehicle cooling and heating system, which is fixedly mounted on the vehicle frame. When the heat conductor is connected to the circuit, the heat conductor can heat the hot water tank and cool the cold water tank. Compared with traditional compressor cooling and resistance heater heating, when the cooling and heating demand is small, the cooling and heating efficiency of the heat conductor is high and the noise is low, thereby improving the noise reduction performance of the commercial vehicle. Pumping in cold water or hot water according to the cooling and heating needs of the battery system and the electric drive system can meet a variety of needs and diversify the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the water circuit of a commercial vehicle cooling and heating system provided by an embodiment of the present invention;

[0025] Figure 2 A first structural diagram of a commercial vehicle cooling and heating system provided by an embodiment of the present invention;

[0026] Figure 3 A second structural diagram of a commercial vehicle cooling and heating system provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a commercial vehicle cooling and heating system (excluding a cold water tank and a hot water tank) provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic structural diagram of a commercial vehicle cooling and heating system (excluding a radiator) provided by an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1. Cold water tank; 2. Hot water tank; 3. Heat conductor; 4. First four-way valve; 5. Second four-way valve; 6. Hot water pump; 7. Cold water pump; 8. Radiator; 9. Frame; 10. Heater. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0032] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0035] like Figure 1-Figure 5As shown, in this embodiment, a commercial vehicle cooling and heating system is used to cool and heat a battery system and an electric drive system. The commercial vehicle cooling and heating system includes a cold water tank 1, a hot water tank 2, a heat conductor 3, a first four-way valve 4, and a second four-way valve 5. The cold water tank 1 is used to cool the battery system and the electric drive system, while the hot water tank 2 is used to heat the battery system and the electric drive system. The heat conductor 3 is disposed between the cold water tank 1 and the hot water tank 2. One end of the heat conductor 3 is used to cool the cold water tank 1, while the other end of the heat conductor 3 is used to heat the hot water tank 2. The first four-way valve 4 has an A1 interface, an A2 interface, an A3 interface, and an A4 interface. The A1 interface is connected to either the A2 interface or the A4 interface, and the A3 interface is connected to either the A2 interface or the A4 interface. The A1 interface is connected to the hot water tank 2, the A2 interface is connected to the water inlet of the electric drive system, the A3 interface is connected to the cold water tank 1, and the A4 interface is connected to the water inlet of the battery system. The second four-way valve 5 has a B1 interface, a B2 interface, a B3 interface and a B4 interface. The B1 interface is connected to one of the B3 interface and the B4 interface, and the B2 interface is connected to one of the B3 interface and the B4 interface. The B1 interface is connected to the water outlet of the battery system, the B2 interface is connected to the water outlet of the electric drive system, the B3 interface is connected to the cold water tank 1, and the B4 interface is connected to the hot water tank 2. Optionally, when the electric drive system and the battery system have cooling requirements at the same time, the A3 interface is connected to the A2 interface and the A4 interface at the same time, and the A1 interface is disconnected. The B3 interface is connected to the B1 interface and the B2 interface at the same time, and the B4 interface is disconnected. Optionally, when the electric drive system and the battery system have heating requirements at the same time, the A1 interface is connected to the A2 interface and the A4 interface at the same time, and the A3 interface is disconnected. The B4 interface is connected to the B1 interface and the B2 interface at the same time, and the B3 interface is disconnected.

[0036] The cold water tank 1 and hot water tank 2 are integrally injection-molded expansion tanks with a filling port on the top and water inlets and outlets on the sides. A heat conductor 3, designed as a semiconductor heat conductor, is positioned between the heat exchange surfaces of the cold water tank 1 and the hot water tank 2. When connected to a circuit, the heat conductor 3 heats the hot water tank 2 and cools the cold water tank 1. Compared to conventional compressor cooling and resistance heater 10 heating, the heat conductor 3 offers high cooling and heating efficiency and low noise when cooling and heating demands are low. A first four-way valve 4 and a second four-way valve 5 are provided in the cooling and heating routes. When the A1 interface is connected to the A2 interface, the A3 interface and the A4 interface can be connected or disconnected. When the A1 interface is connected to the A4 interface, the A3 interface and the A2 interface can be connected or disconnected. When the B1 interface is connected to the B3 interface, the B2 interface and the B4 interface can be connected or disconnected. When the B1 interface is connected to the B4 interface, the B2 interface and the B3 interface can be connected or disconnected. Cold water or hot water is pumped in according to the cooling and heating requirements of the battery system and the electric drive system.

[0037] The operating process of the commercial vehicle cooling and heating system is as follows: When the battery system needs cooling and the electric drive system needs heating, the A1 interface is connected to the A2 interface, the A3 interface is connected to the A4 interface, the B1 interface is connected to the B3 interface, and the B2 interface is connected to the B4 interface. The cold water in the cold water tank 1 passes through the A3 interface and the A4 interface in sequence to cool the battery system, and then the cold water returns to the cold water tank 1 through the B1 interface and the B3 interface. At the same time, the hot water in the hot water tank 2 passes through the A1 interface and the A2 interface in sequence to heat the electric drive system, and then the hot water returns to the hot water tank 2 through the B2 interface and the B4 interface. When only the battery system needs cooling, the A3 interface is connected to the A4 interface, the B1 interface is connected to the B3 interface, the A1 interface is disconnected from the A2 interface, and the B2 interface is disconnected from the B4 interface. Similarly, when only the electric drive system is heating, the A1 interface is connected to the A2 interface, the B2 interface is connected to the B4 interface, the A3 interface is disconnected from the A4 interface, and the B1 interface is disconnected from the B3 interface. When the battery system requires heating and the electric drive system requires cooling, the A1 interface is connected to the A4 interface, the A2 interface is connected to the A3 interface, the B1 interface is connected to the B4 interface, and the B2 interface is connected to the B3 interface. The cold water in the cold water tank 1 passes through the A2 interface and the A3 interface in sequence to cool the electric drive system, and then the cold water returns to the cold water tank 1 through the B2 interface and the B3 interface. At the same time, the hot water in the hot water tank 2 passes through the A1 interface and the A4 interface in sequence to heat the battery system, and then the hot water returns to the hot water tank 2 through the B1 interface and the B4 interface. When only the battery system requires heating, the A1 interface is connected to the A4 interface, the B1 interface is connected to the B4 interface, the A2 interface is disconnected from the A3 interface, and the B2 interface is disconnected from the B3 interface. Similarly, when only the electric drive system is cooled, the A2 interface is connected to the A3 interface, the B2 interface is connected to the B3 interface, the A1 interface is disconnected from the A4 interface, and the B1 interface is disconnected from the B4 interface. The commercial vehicle cooling and heating system can meet the needs of heating or cooling the battery system alone, the needs of heating or cooling the electric drive system alone, the needs of cooling the battery system and heating the electric drive system, and the needs of heating the battery system and cooling the electric drive system. The system is diversified.

[0038] Continue to refer to Figure 1-Figure 5 The commercial vehicle cooling and heating system also includes a hot water pump 6 and a cold water pump 7. The input of hot water pump 6 is connected to the outlet of hot water tank 2, and the output of hot water pump 6 is connected to port A1. The input of cold water pump 7 is connected to the outlet of cold water tank 1, and the output of cold water pump 7 is connected to port B3. Hot water pump 6 and cold water pump 7 serve as driving sources. Cold water pump 7 pumps cold water from cold water tank 1 to the battery system or electric drive system for cooling according to cooling requirements. Hot water pump 6 pumps hot water from hot water tank 2 to the battery system or electric drive system for heating according to heating requirements.

[0039] Reference Figure 1-Figure 4The commercial vehicle cooling and heating system also includes a radiator 8, the input end of the radiator 8 is connected to the A2 interface, and the output end of the radiator 8 is connected to the electric drive system. The radiator 8 includes a bracket, a cooling fan and cooling fins. The cooling fan is arranged on one side of the bracket and is used for heat exchange with the coolant. The cooling fins are arranged on the other side of the bracket and are used for heat exchange with the air. There are multiple fans, and the multiple fans are distributed in a matrix. When the electric drive system needs to be heated alone, the A1 interface is connected to the A2 interface, the B2 interface is connected to the B4 interface, the A3 interface is disconnected from the A4 interface, and the B1 interface is disconnected from the B3 interface. The hot water in the hot water tank 2 is heated by the hot water pump 6, the A1 interface, the A2 interface and the radiator 8 in turn. Since the hot water temperature in the hot water tank 2 is constant, according to the temperature requirements of the electric drive system, the radiator 8 can cool the hot water so that the temperature of the hot water meets the heating requirements of the electric drive system.

[0040] Reference Figure 2-Figure 5 The commercial vehicle cooling and heating system also includes a frame 9, to which both the cold water tank 1 and the hot water tank 2 are mounted. The frame 9 is fixed to the vehicle frame. The cold water tank 1 and the hot water tank 2 are secured to the frame 9 via legs and multiple bolts. The frame 9 is constructed from welded steel pipes. Legs with rubber pads are installed at the four corners of the frame 9, allowing it to be secured to the vehicle frame or the battery frame 9.

[0041] Continue to refer to Figure 1-Figure 5 The commercial vehicle cooling and heating system also includes a heater 10, the input of which is connected to the A4 interface, and the output of which is connected to the battery system. When the battery system alone requires heating, the A1 interface is connected to the A4 interface, the B1 interface is connected to the B4 interface, the A2 interface is disconnected from the A3 interface, and the B2 interface is disconnected from the B3 interface. The hot water in the hot water tank 2 is then heated by the hot water pump 6, the A1 interface, the A4 interface, and the heater 10. Since the hot water in the hot water tank 2 is at a constant temperature, and considering the heat loss during the hot water transmission process, the heater 10 can heat the hot water according to the temperature requirements of the battery system, so that the hot water temperature meets the heating requirements of the battery system.

[0042] This embodiment also provides a vehicle, including a frame and the above-mentioned commercial vehicle cooling and heating system, which is fixedly mounted on the frame. Optionally, the commercial vehicle cooling and heating system is fixedly mounted on the battery frame 9, and the heat conductor 3 is arranged between the cold water tank 1 and the hot water tank 2. When the heat conductor 3 is connected to the circuit, the heat conductor 3 can heat the hot water tank 2 and cool the cold water tank 1. Compared with traditional compressor cooling and resistance heater 10 heating, the cooling and heating efficiency of the heat conductor 3 is high and the noise is low when the cooling and heating demand is small, thereby improving the noise reduction performance of the commercial vehicle. Pumping in cold water or hot water according to the cooling and heating needs of the battery system and the electric drive system can meet a variety of needs and diversify the system.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Commercial vehicle cooling and heating system, used for cooling and heating the battery system and electric drive system, characterized by: The commercial vehicle cooling and heating system includes: A cold water tank (1), the cold water tank (1) being used to cool the battery system and the electric drive system; A hot water tank (2); the hot water tank (2) is used to heat the battery system and the electric drive system; A heat conducting member (3), the heat conducting member (3) being arranged between the cold water tank (1) and the hot water tank (2), one end of the heat conducting member (3) being used for cooling the cold water tank (1), and the other end of the heat conducting member (3) being used for heating the hot water tank (2); a first four-way valve (4), the first four-way valve (4) having an A1 interface, an A2 interface, an A3 interface, and an A4 interface, the A1 interface being connected to either the A2 interface or the A4 interface, the A3 interface being connected to either the A2 interface or the A4 interface, the A1 interface being connected to the hot water tank (2), the A2 interface being connected to the water inlet of the electric drive system, the A3 interface being connected to the cold water tank (1), and the A4 interface being connected to the water inlet of the battery system; A second four-way valve (5), wherein the second four-way valve (5) has a B1 interface, a B2 interface, a B3 interface, and a B4 interface, wherein the B1 interface is connected to one of the B3 interface and the B4 interface, and the B2 interface is connected to one of the B3 interface and the B4 interface, wherein the B1 interface is connected to the water outlet of the battery system, the B2 interface is connected to the water outlet of the electric drive system, the B3 interface is connected to the cold water tank (1), and the B4 interface is connected to the hot water tank (2).

2. The commercial vehicle cooling and heating system according to claim 1, characterized in that: The commercial vehicle cooling and heating system further comprises a hot water pump (6), the input end of the hot water pump (6) being connected to the water outlet of the hot water tank (2), and the output end of the hot water pump (6) being connected to the A1 interface.

3. The commercial vehicle cooling and heating system according to claim 1, characterized in that: The commercial vehicle cooling and heating system further comprises a cold water pump (7), the input end of the cold water pump (7) being connected to the water outlet of the cold water tank (1), and the output end of the cold water pump (7) being connected to the B3 interface.

4. The commercial vehicle cooling and heating system according to claim 1, characterized in that: The commercial vehicle cooling and heating system further comprises a radiator (8), the input end of the radiator (8) being connected to the A2 interface, and the output end of the radiator (8) being connected to the electric drive system.

5. The commercial vehicle cooling and heating system according to claim 4, characterized in that: The radiator (8) comprises a bracket, a cooling fan and cooling fins, wherein the cooling fan is arranged on one side of the bracket and is used for heat exchange with the coolant, and the cooling fins are arranged on the other side of the bracket and are used for heat exchange with the air.

6. The commercial vehicle cooling and heating system according to claim 5, characterized in that: There are multiple fans, and the multiple fans are distributed in a matrix.

7. The commercial vehicle cooling and heating system according to claim 1, characterized in that: The heat conducting member (3) is configured as a semiconductor heat conducting sheet.

8. The commercial vehicle cooling and heating system according to claim 1, characterized in that: The commercial vehicle cooling and heating system further comprises a frame (9), the cold water tank (1) and the hot water tank (2) are both mounted on the frame (9), and the frame (9) is fixedly mounted on the vehicle frame.

9. The commercial vehicle cooling and heating system according to claim 8, characterized in that: The commercial vehicle cooling and heating system further comprises a heater (10), the input end of the heater (10) being connected to the A4 interface, and the output end of the heater (10) being connected to the battery system.

10. A vehicle, characterized in that The commercial vehicle refrigeration and heating system comprises a vehicle frame and the commercial vehicle refrigeration and heating system according to any one of claims 1 to 9, wherein the commercial vehicle refrigeration and heating system is fixedly mounted on the vehicle frame.

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