Electric motorcycle thermal management system based on PTC heating assembly technology and capable of reducing size

Abstract

The utility model belongs to the technical field of electric motorcycle thermal management systems, and particularly relates to a volume-reduced electric motorcycle thermal management system based on PTC (Positive Temperature Coefficient) heating component technology, which comprises a liquid cooling control module, and the liquid cooling control module is respectively connected with a radiator I, an electric controller, a radiator II, a PTC heating component and a battery pack. The liquid cooling control module is integrated in the system, different working modes can be automatically adjusted according to different working conditions of the electric motorcycle, it is ensured that the system achieves the optimal heat management effect under various environments and working conditions, and by means of the integrated design of the five-way water valve and the electronic water pump in the system, system components are effectively reduced, the operation efficiency is improved, and the cost is reduced. Meanwhile, the system adapts to different working modes, so that the thermal management efficiency of the system is better, the size of the system can be reduced by reducing certain system components, the spatial arrangement of the system is more convenient, and the design scheme is more flexible.

Description

Technical Field

[0001] The utility model belongs to the technical field of the thermal management system of electric motorcycles, and particularly relates to a thermal management system of an electric motorcycle based on PTC heating component technology and with reduced volume. Background Art

[0002] With the enhancement of people's environmental protection awareness, electric motorcycles are increasingly favored by people. During the use of electric motorcycles, it is necessary to ensure that the main components, such as motors, electronic controls, battery packs and other components, have good heat dissipation, so as to ensure the reduction of failure rates. Therefore, the performance of the thermal management system of electric motorcycles is crucial.

[0003] Problems existing in the prior art:

[0004] In the prior art, there are certain deficiencies in the heat dissipation and temperature control effects of the existing thermal management system of electric motorcycles, which will cause the components such as motors, electronic controls, and battery packs in the thermal management system of electric motorcycles to overheat during use, resulting in a decline or damage to their performance, and the system has a large volume, thus occupying more space. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a thermal management system of an electric motorcycle based on PTC heating component technology and with reduced volume, which can solve the problems that there are certain deficiencies in the heat dissipation and temperature control effects of the existing thermal management system of electric motorcycles, which will cause the components such as motors, electronic controls, and battery packs in the thermal management system of electric motorcycles to overheat during use, resulting in a decline or damage to their performance, and the system has a large volume, thus occupying more space.

[0006] The technical solution adopted by the utility model is specifically as follows:

[0007] A thermal management system of an electric motorcycle based on PTC heating component technology and with reduced volume includes a liquid cooling control module, which is respectively connected to a first radiator, an electronic control, a second radiator, a PTC heating component and a battery pack. The electronic control is connected to a motor, the motor is connected to a first temperature sensor, the first temperature sensor is connected to the first radiator, the second radiator is connected to a water storage kettle, both the second radiator and the PTC heating component are connected to a three-way joint, the three-way joint is connected to a fourth temperature sensor, the fourth temperature sensor is connected to the battery pack, and two electronic fans are arranged on the second radiator.

[0008] The liquid cooling control module includes a five-way water valve, which is respectively connected to water pump one, the PTC heating component, water pump two, temperature sensor two, and radiator two. The connection channel between the five-way water valve and the PTC heating component is channel ④, the connection channel between the five-way water valve and water pump one is channel ①, the connection channel between the five-way water valve and temperature sensor two is channel ②, the connection channel between the five-way water valve and water pump two is channel ③, and the connection channel between the five-way water valve and radiator two is channel ⑤.

[0009] Temperature sensor two is connected to the electronic control, water pump one is connected to radiator one, water pump two is connected to temperature sensor three, and temperature sensor three is connected to the battery pack.

[0010] The technical effects achieved by the present utility model are as follows:

[0011] This system integrates a liquid cooling control module, which can automatically adjust different working modes according to the different working conditions of the electric motorcycle, ensuring the best thermal management effect of the system in various environments and working conditions. In this system, through the integrated design of the five-way water valve and the electronic water pump, the system components are effectively reduced, the operation efficiency is improved, and different working modes are adapted, making the thermal management efficiency of the system better. By reducing certain system components, the volume of the system can be reduced, making the spatial arrangement of the system more convenient, the design scheme more flexible, the system components more compact, and the space limitation less. By adopting the combined design of the PTC heating component and the electronic fan for heat dissipation, the battery pack can be effectively protected at both low and high temperatures. Description of the Drawings

[0012] Figure 1 is the system flow schematic diagram of the present utility model;

[0013] Figure 2 is the liquid cooling control module flow schematic diagram of the present utility model.

[0014] In the drawings, the list of components represented by each reference numeral is as follows:

[0015] 1. Electronic control; 2. Liquid cooling control module; 21. Temperature sensor two; 22. Five-way water valve; 23. Temperature sensor three; 24. Water pump two; 25. Water pump one; 3. Battery pack; 4. Motor; 5. Temperature sensor one; 6. Radiator one; 7. Temperature sensor four; 8. Three-way joint; 9. PTC heating component; 10. Electronic fan; 11. Radiator two; 12. Water storage kettle. Detailed Embodiment

[0016] In order to make the purpose and advantages of the present utility model clearer and more understandable, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text only describes one or several specific implementation manners of the present utility model, and does not strictly limit the scope of protection specifically claimed for the present utility model.

[0017] As Figure 1-2 shown, an electric motorcycle thermal management system based on PTC heating component technology and with reduced volume includes a liquid cooling control module 2. The liquid cooling control module 2 is respectively connected to a first radiator 6, an electronic control unit 1, a second radiator 11, a PTC heating component 9, and a battery pack 3. The electronic control unit 1 is connected to a motor 4, the motor 4 is connected to a first temperature sensor 5, the first temperature sensor 5 is connected to the first radiator 6, and the motor 4 and the electronic control unit 1 are connected to the first radiator 6 through a first water pump 25, thereby forming a circuit of the motor 4 and the electronic control unit 1. The first radiator 6 plays a role in heat dissipation in this circuit, and the first temperature sensor 5 is used to monitor the temperature of this circuit. The liquid cooling control module 2 is integrated in this circuit and is responsible for controlling the operation of the first water pump 25. The second radiator 11 is connected to a water storage kettle 12, the second radiator 11 and the PTC heating component 9 are both connected to a three-way joint 8, the three-way joint 8 is connected to a fourth temperature sensor 7, and the fourth temperature sensor 7 is connected to the battery pack 3. Two electronic fans 10 are provided on the second radiator 11, and the battery pack 3 is connected to the second radiator 11 through a second water pump 24, thereby forming a circuit of the battery pack 3. Two electronic fans 10 are provided on the second radiator 11 to enhance the heat dissipation effect in this circuit. By providing the PTC heating component 9, the battery pack 3 can be reheated by heating when the temperature of the battery pack 3 is too low, so as to ensure that the temperature of the battery pack 3 is always maintained within the normal range. By providing the water storage kettle 12, it is used to store coolant to ensure the coolant supply of the system.

[0018] The liquid cooling control module 2 includes a five-way water valve 22. The five-way water valve 22 is respectively connected to the first water pump 25, the PTC heating component 9, the second water pump 24, a second temperature sensor 21, and the second radiator 11. The second temperature sensor 21 is connected to the electronic control unit 1, the first water pump 25 is connected to the first radiator 6, the second water pump 24 is connected to a third temperature sensor 23, and the third temperature sensor 23 is connected to the battery pack 3. By providing the third temperature sensor 23 and the fourth temperature sensor 7, they can be used to monitor the temperature in the corresponding circuits. By providing the five-way water valve 22, the direction of the water flow can be automatically switched under different working modes to determine the flow direction of the coolant to meet different heat dissipation requirements.

[0019] The working principle of the present utility model is as follows:

[0020] Precise thermal management of the electric motorcycle's electronic control unit 1, motor 4, and battery pack 3 is achieved by connecting the radiator 1 6, PTC heating component 9, three-way valve 8, and radiator 2 11 through the liquid cooling control module 2. There are six thermal management modes during the thermal management process:

[0021] Mode 1: In the low-temperature state, the liquid cooling control module 2 connects channels ① and ② and channels ③ and ④ through the five-way water valve 22. At this time, the PTC heating component 9 is activated to heat the battery pack 3 to raise the temperature. At the same time, the five-way water valve 22 is adjusted to the heating circuit.

[0022] Mode 2: During normal driving, the liquid cooling control module 2 connects channels ① and ② and channels ③ and ⑤ through the five-way water valve 22. The motor 4 / electronic control unit 1 and battery pack 3 circuits operate independently. Water pump 1 25 and water pump 2 24 drive the coolant through radiator 1 6 and radiator 2 11 respectively to ensure the heat dissipation of the motor 4 and battery pack 3.

[0023] Mode 3: In the fast charging state, the liquid cooling control module 2 connects channels ① and ② and channels ③ and ⑤ through the five-way water valve 22. At this time, the electronic fan 10 in the battery pack 3 circuit is activated to enhance the heat dissipation effect and ensure that the battery pack 3 does not overheat during fast charging.

[0024] Mode 4: In the large circulation state, the liquid cooling control module 2 connects channels ①, ⑤, ④, and ② through the five-way water valve 22. The five-way water valve 22 is adjusted to the circulating cooling mode. The motor 4 and battery pack 3 share a cooling circuit, and the PTC heating component 9 is turned off to reduce the temperature of the battery pack 3 circuit.

[0025] Mode 5: In the large circulation mode during the fast charging state, the liquid cooling control module 2 connects channels ①, ⑤, ③, and ② through the five-way water valve 22. The electronic control unit 1 and battery pack 3 circuits achieve efficient heat dissipation through large circulation to ensure temperature control of all parts of the system under high load.

[0026] Mode 6: Filling mode. The system automatically fills the coolant through the liquid cooling control module 2. During the filling process, the five-way water valve 22 and related components are controlled by the liquid cooling control module 2 to ensure that all pipelines in the system are unobstructed, avoid any air remaining in the pipelines, thereby preventing the filling speed from being affected. This mode ensures that the coolant can quickly and evenly fill the entire system, avoid the generation of bubbles, and ensure the normal operation and efficient cooling effect of the system.

[0027] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model are implemented by conventional means in the art without special instructions and limitations.

Claims

1. An electric motorcycle thermal management system based on PTC heating component technology and with reduced volume, including a liquid cooling control module (2), characterized in that: The liquid cooling control module (2) is respectively connected to the first radiator (6), the electric control (1), the second radiator (11), the PTC heating component (9), and the battery pack (3). The electric control (1) is connected to the motor (4). The motor (4) is connected to the first temperature sensor (5). The first temperature sensor (5) is connected to the first radiator (6). The second radiator (11) is connected to the water storage kettle (12). Both the second radiator (11) and the PTC heating component (9) are connected to the three-way joint (8). The three-way joint (8) is connected to the fourth temperature sensor (7). The fourth temperature sensor (7) is connected to the battery pack (3). Two electronic fans (10) are provided on the second radiator (11).

2. The thermal management system for an electric motorcycle based on PTC heating component technology and with reduced volume according to claim 1, characterized in that: The liquid cooling control module (2) includes a five-way water valve (22). The five-way water valve (22) is respectively connected to the first water pump (25), the PTC heating component (9), the second water pump (24), the second temperature sensor (21), and the second radiator (11).

3. The electric motorcycle thermal management system based on PTC heating component technology and with reduced volume according to claim 2, characterized in that: The second temperature sensor (21) is connected to the electric control (1). The first water pump (25) is connected to the first radiator (6). The second water pump (24) is connected to the third temperature sensor (23). The third temperature sensor (23) is connected to the battery pack (3).

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