CN-122008758-A - Vehicle air spring heating device, control method thereof and vehicle

Abstract

The application provides a vehicle air spring heating device, a control method thereof and a vehicle. The heating plate is fixed to the base of the air spring by means of a mounting. And the temperature control unit controls an external power supply to be conducted with the power interface under the control of a heating demand signal, and the heating plate generates heat energy to heat the air spring. In the control method, whether the air spring is heated is determined according to the detection results of the suspension height change value and the ambient temperature value. By the scheme of the application, the temperature of the air spring can be controlled, so that the working performance of the air spring is matched with the actual conditions of the suspension height variation value and the environmental temperature value, and the influence of the air spring on the working performance of the air suspension when the temperature is too low is avoided.

Inventors

• CHANG XIN
• Tao Bangyin

Assignees

• 奇瑞汽车股份有限公司

Dates

Publication Date

20260512

Application Date

20260318

Claims (10)

1. 1. A vehicle air spring heating apparatus, comprising: the heating plate is provided with a power interface which is suitable for being connected with an external power supply; A mounting member for fixing the heating plate to a base of the air spring; And the temperature control unit is used for controlling the external power supply to be conducted with the power interface after receiving a heating demand signal, and the heating plate is used for generating heat energy which is used for heating the air spring.
2. 2. The vehicle air spring heating apparatus according to claim 1, wherein: the heating bottom plate comprises a circuit board, and a heating type resistance element is arranged on the circuit board.
3. 3. The vehicle air spring heating apparatus according to claim 1, wherein: the outer surface of the heating plate is provided with an insulating heat-insulating material layer.
4. 4. A vehicle air spring heating apparatus according to any one of claims 1-3, further comprising: And one end of the limiting sleeve is sleeved on the base of the air spring, and the other end of the limiting sleeve is sleeved on the outside of the heating plate.
5. 5. The vehicle air spring heating apparatus according to claim 4, wherein: the limiting sleeve is provided with a power connector, one end of the power connector is electrically connected with the power interface, and the other end of the power connector is electrically connected with an external power supply.
6. 6. A control method of a vehicle air spring heating apparatus according to any one of claims 1 to 5, comprising: acquiring a suspension height variation value and an ambient temperature value; acquiring a height variation standard value in an ideal state; Determining whether the air spring needs to be heated according to the relation between the suspension height change value and the height change standard value and the environment temperature value; And if the air spring needs to be heated, sending a heating demand signal to a temperature control unit of the air spring heating device.
7. 7. The control method according to claim 6, wherein the determining whether heating of the air spring is required or not based on the relationship between the suspension height variation value and the height variation standard value, and the ambient temperature value, comprises: and if the environmental temperature value is smaller than the set temperature threshold value and the suspension height variation value is smaller than the height variation standard value, determining that the air spring needs to be heated.
8. 8. The control method according to claim 6, wherein said determining whether heating of the air spring is required or not based on the relationship between the suspension height variation value and the height variation standard value, and the ambient temperature value, further comprises: If the environmental temperature value is smaller than a set temperature threshold value and the suspension height variation value is larger than or equal to the height variation standard value, determining that the air spring is not required to be heated; and if the environmental temperature value is greater than or equal to a set temperature threshold value and the suspension height variation value is greater than or equal to the height variation standard value, determining that the air spring is not required to be heated.
9. 9. The control method according to claim 7 or 8, characterized in that the determining whether heating of the air spring is necessary or not based on the relationship between the suspension height variation value and the height variation standard value, and the ambient temperature value, further comprises: if the environmental temperature value is greater than or equal to a set temperature threshold value and the suspension height variation value is smaller than the height variation standard value, determining an air spring fault; And sending out a fault alarm signal.
10. 10. A vehicle comprising a vehicle control unit, a height sensor, a temperature sensor and a vehicle air spring heating device according to any one of claims 1 to 5; The height sensor detects a suspension height variation value of the vehicle and sends the suspension height variation value to the whole vehicle controller; The temperature sensor detects an environmental temperature value of the environment where the vehicle is located and sends the environmental temperature value to the whole vehicle controller; the vehicle controller executing the control method according to any one of claims 6 to 9; The temperature control unit of the vehicle air spring heating device is in communication connection with the whole vehicle controller.

Description

Vehicle air spring heating device, control method thereof and vehicle Technical Field The application relates to the technical field of vehicle suspension structures, in particular to a vehicle air spring heating device, a control method thereof and a vehicle. Background The air spring gradually becomes a core component of the suspension system due to the characteristics of adjustable rigidity, automatic adaptation to load change and the like. On passenger cars, air springs are commonly collocated with CDC (Continuous Damping Control, continuous damping control system) dampers to form electromagnetic-air suspensions. In the process of adjusting the air suspension, the fact that the difference between the temperature difference in the early morning and the temperature difference in the afternoon in the north is larger, so that the friction between the air spring bag covers is different, the travelling comfort of the same vehicle is greatly different at two time points, the temperature of the air in the early morning is low, the suspension is hard and the temperature of the air in the afternoon is high, and the suspension is more comfortable during travelling. The main reason is that the capsule shell of the air spring is mainly made of rubber materials, the direct influence of temperature on the friction coefficient of the rubber materials is obvious, especially when the temperature is too low, the rubber hardness is increased, the elasticity is reduced, the roughness of the contact surface is obvious, and the friction coefficient can be increased. Thus, prior art suspensions including air springs have resulted in differences in performance at different temperatures. Disclosure of Invention The application aims to solve the technical problem that the working performance of the existing air spring is greatly influenced by temperature, so that a vehicle air spring heating device, a control method thereof and a vehicle are provided. In a first aspect, the present application provides a vehicle air spring heating device, including: the heating plate is provided with a power interface which is suitable for being connected with an external power supply; A mounting member for fixing the heating plate to a base of the air spring; And the temperature control unit is used for controlling the external power supply to be conducted with the power interface after receiving a heating demand signal, and the heating plate is used for generating heat energy which is used for heating the air spring. Preferably, in the vehicle air spring heating device, the heating bottom plate comprises a circuit board, and a heating type resistance element is arranged on the circuit board. Preferably, in the vehicle air spring heating device, an outer surface of the heating plate is provided with an insulating material layer. Preferably, the vehicle air spring heating device further comprises: And one end of the limiting sleeve is sleeved on the base of the air spring, and the other end of the limiting sleeve is sleeved on the outside of the heating plate. Preferably, in the vehicle air spring heating device, a power connector is disposed on the limiting sleeve, one end of the power connector is electrically connected with the power interface, and the other end of the power connector is electrically connected with the external power supply. In a second aspect, the present application provides a control method for a vehicle air spring heating device according to any one of the first aspect, including: acquiring a suspension height variation value and an ambient temperature value; acquiring a height variation standard value in an ideal state; Determining whether the air spring needs to be heated according to the relation between the suspension height change value and the height change standard value and the environment temperature value; And if the air spring needs to be heated, sending a heating demand signal to a temperature control unit of the air spring heating device. Preferably, the control method, the determining whether the air spring needs to be heated according to the relation between the suspension height variation value and the height variation standard value and the environmental temperature value, includes: and if the environmental temperature value is smaller than the set temperature threshold value and the suspension height variation value is smaller than the height variation standard value, determining that the air spring needs to be heated. Preferably, the control method, the determining whether the air spring needs to be heated according to the relation between the suspension height variation value and the height variation standard value and the ambient temperature value, further includes: If the environmental temperature value is smaller than a set temperature threshold value and the suspension height variation value is larger than or equal to the height variation standard value, determining that the air spring is not requir