New energy bus vehicle winter temperature automatic control heating system

Abstract

This invention discloses an automatic temperature control heating system for new energy buses in winter, comprising a drive motor, a radiator tank, a motor controller, several electric water pumps, several radiators connected in series, an automatic temperature control box, a temperature sensor, water pipes, an expansion tank, and three electric two-position three-way valves. The temperature sensor is installed inside the bus and is electrically connected to the automatic temperature control box. The automatic temperature control box receives the temperature sensed by the temperature sensor and controls the opening and closing of the electric two-position three-way valves via a wiring harness. The automatic temperature control box also controls the start and stop of the radiators. The expansion tank is connected to the motor controller via water pipes and to the radiator tank via water pipes. The radiator tank is connected to the three electric two-position three-way valves. This heating system can reduce the time new energy vehicles spend using air conditioning in winter, reducing unnecessary energy consumption and thus extending the driving range.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, specifically to an automatic temperature control heating system for new energy buses in winter. Background Technology

[0002] In recent years, with increasing environmental awareness and stronger government support for new energy vehicles, they have gradually become the mainstream in the market. However, the energy consumption of air conditioning, which is the primary method of heating in new energy vehicles during winter, has always been a major concern for consumers. In actual use, it has been found that air conditioning in new energy vehicles consumes a significant amount of energy in winter, and can even affect the vehicle's driving range. In cold winters, due to the energy storage characteristics of new energy vehicle batteries, their capacity decreases significantly at low temperatures. Using air conditioning at this time leads to even greater battery energy consumption, considerably impacting the driving range of the new energy vehicle.

[0003] In summary, new energy vehicles consume more energy when using electric heating or air conditioning in winter, which affects their driving range; the air vents of the vehicle's air conditioning system are located at the top, and since hot air flows upward, the heating effect is poor. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of this invention is to provide an automatic temperature control heating system for new energy buses in winter, thereby solving the existing problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides an automatic temperature control heating system for new energy buses in winter, comprising a drive motor, a radiator tank, a motor controller, several electric water pumps, several radiators connected in series, an automatic temperature control box, a temperature sensor, water pipes, an expansion tank, and three electric two-position three-way valves. The temperature sensor is installed inside the bus and is electrically connected to the automatic temperature control box. The automatic temperature control box receives the temperature sensed by the temperature sensor and controls the opening and closing of the outlet of the electric two-position three-way valves via a wiring harness. The automatic temperature control box also controls the start and stop of the radiators. The expansion tank is connected to the motor controller via water pipes, and the expansion tank is connected to the radiator via water pipes. The water tank is connected to three electrically operated two-position three-way valves. The valve ports of the three electrically operated two-position three-way valves are A, B, and C, respectively. The A port of valve 1 is connected to the A port of valve 2 via a water pipe. The B port of valve 1 is connected to the motor controller via a water pipe. The C port of valve 1 is connected to the water tank and the A port of valve 3 via a water pipe. The B port of valve 2 is connected to the drive motor via a water pipe. The C port of valve 2 is connected to the first radiator in series via a water pipe. The B port of valve 3 is connected to the drive motor via a water pipe. The C port of valve 3 is connected to the last radiator in series via a water pipe. An electric water pump is installed on the water pipe.

[0006] Preferably, the automatic temperature control box is equipped with a heating indicator light, which is grounded.

[0007] The beneficial effects of this invention are as follows: The heating system of this invention utilizes the large amount of heat energy generated by the drive motor during operation. An automatic temperature control box is set up to automatically control and adjust the circulation path of the coolant in the drive motor according to the ambient temperature. The coolant flows through the radiator installed on the floor inside the vehicle. The radiator cools the coolant and also causes the hot air to flow upward from the bottom, thereby accelerating the convection of cold and hot air in the vehicle and achieving rapid auxiliary heating of the air in the vehicle. This reduces the time that new energy vehicles need to use air conditioning in winter, thereby reducing unnecessary energy consumption and extending the driving range. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of the automatic temperature control heating system for new energy buses in winter, provided in an embodiment of the present invention. Figure 2This is a schematic diagram of the structure of an electric two-position three-way valve provided in an embodiment of the present invention.

[0010] Explanation of reference numerals in the attached diagram: 1. Drive motor; 2. Radiator water tank; 3. Motor controller; 4. Electric water pump; 5. Radiator; 6. Automatic temperature control box; 7. Heating indicator light; 8. Temperature sensor; 9. Water pipe; 10. Expansion tank; 11. Electric two-position three-way valve. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] Example 1, such as Figure 1 and Figure 2 As shown, the automatic temperature control heating system for new energy buses in winter includes a drive motor 1, a radiator tank 2, a motor controller 3, several electric water pumps 4, several radiators 5 connected in series, an automatic temperature control box 6, a temperature sensor 8, water pipes 9, an expansion tank 10, and three electric two-position three-way valves 11. The temperature sensor 8 is installed inside the bus and is electrically connected to the automatic temperature control box 6. The automatic temperature control box 6 receives the temperature sensed by the temperature sensor 8 and controls the opening and closing of the outlet of the electric two-position three-way valves 11 via a wiring harness. The automatic temperature control box 6 also controls the start and stop of the radiators 5. The expansion tank 10 is connected to the motor controller 3 via water pipes 9 and the radiators 5 via water pipes 9. Hot water tank 2 is connected to three electric two-position three-way valves 11. The valve ports of the electric two-position three-way valves 11 are A, B, and C, respectively. The three electric two-position three-way valves 11 are valve number one, valve number two, and valve number three. The A port of valve number one is connected to the A port of valve number two through a water pipe 9. The B port of valve number one is connected to the motor controller 3 through a water pipe 9. The C port of valve number one is connected to the hot water tank 2 and the A port of valve number three through a water pipe 9. The B port of valve number two is connected to the drive motor 1 through a water pipe 9. The C port of valve number two is connected to the first radiator 5 connected in series through a water pipe 9. The B port of valve number three is connected to the drive motor 1 through a water pipe 9. The C port of valve number three is connected to the last radiator 5 connected in series through a water pipe 9. An electric water pump 4 is installed on the water pipe 9.

[0013] Furthermore, the automatic temperature control box 6 is equipped with a heating indicator light 7, which is grounded.

[0014] Working principle: 1. Normal heat dissipation (no heating) state: When the ambient temperature (inside the carriage) is 20°C higher than the set temperature (which can also be adjusted as needed), the automatic temperature control box will control the A and B ports of the three electric two-position three-way valves to connect and close the B and C ports. At this time, the coolant is in the normal heat dissipation path of the drive motor and motor controller: the coolant enters from the lower outlet of the radiator tank 2, enters from the B port of the electric water pump 4, exits from the A port of the first valve, enters from the A port of the second valve, exits from the B port of the second valve, enters from the inlet of the drive motor 1, exits from the outlet of the drive motor 1, enters from the B port of the third valve, exits from the A port of the third valve, and exits from the upper outlet of the radiator tank 2, forming a closed loop to dissipate heat for the drive motor and motor controller.

[0015] 2. Heating status: When the ambient temperature (inside the carriage) is 20°C lower than the set temperature (which can also be adjusted as needed), the automatic temperature control box will close A and B of the three electric two-position three-way valves and open channels B and C. At this time, the cooling water circulation path is divided into two paths: the motor controller cooling path and the drive motor cooling and carriage heating path.

[0016] Cooling cycle of the motor controller: Coolant enters from the bottom of radiator tank 2 → electric water pump 4 → motor controller 3 → port B of valve 1 → port C of valve 1 → top of radiator tank 2, forming a closed loop for cooling the motor controller. Cooling and heating cycle of the drive motor: Drive motor 1 → Inlet at port B of valve 2 → Outlet at port C of valve 2 → Electric water pump 9 (this electric water pump only operates during heating) → Radiator in series (the radiator fan only operates during heating) → Inlet at port C of valve 3 → Outlet at port B of valve 3 → Drive motor 1, forming a closed loop to cool the drive motor and simultaneously heat the carriage through the radiator inside the carriage. 3. Abnormal conditions: In heating mode, if the radiator system in the passenger compartment malfunctions and causes the temperature of the drive motor cooling system to rise to the preset value, the automatic temperature control box will automatically cut off the heating mode and enter the normal heat dissipation mode to ensure normal vehicle operation.

[0017] This can reduce the time new energy vehicles spend using air conditioning in winter, reduce unnecessary energy consumption, and thus extend their driving range.

[0018] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A winter temperature automatic control heating system for new energy buses, characterized in that, The system includes a drive motor, a radiator, a motor controller, several electric water pumps, several radiators connected in series, an automatic temperature control box, a temperature sensor, water pipes, an expansion tank, and three electric two-position three-way valves. The temperature sensor is installed inside the bus and is electrically connected to the automatic temperature control box. The automatic temperature control box receives the temperature sensed by the temperature sensor and controls the opening and closing of the electric two-position three-way valves via a wiring harness. The automatic temperature control box also controls the start and stop of the radiators. The expansion tank is connected to the motor controller via water pipes and to the radiator via water pipes. The radiator is connected to... Three electrically operated two-position three-way valves are provided, with valve ports A, B, and C respectively. These three valves are designated as valve number one, valve number two, and valve number three. Valve number one's port A is connected to valve number two's port A via a water pipe. Valve number one's port B is connected to a motor controller via a water pipe. Valve number one's port C is connected to a radiator and valve number three's port A via a water pipe. Valve number two's port B is connected to a drive motor via a water pipe. Valve number two's port C is connected to the first radiator in series via a water pipe. Valve number three's port B is connected to a drive motor via a water pipe. Valve number three's port C is connected to the last radiator in series via a water pipe. An electric water pump is installed on each water pipe.

2. The automatic temperature control and heating system for new energy buses in winter as described in claim 1, characterized in that, The automatic temperature control box is equipped with a heating indicator light, which is grounded.

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