Preheating device of vehicle and vehicle

Abstract

The utility model discloses a preheating device and method of a vehicle, electronic equipment and a storage medium, and relates to the technical field of vehicles, different heaters are built in, the state information of the vehicle is detected, and the heater corresponding to the current vehicle state information is selected according to the state information of the vehicle to preheat the vehicle. The vehicle is preheated on the premise that electric power in the power battery is not consumed, and the endurance mileage of the vehicle is not affected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and particularly to a preheating device for a vehicle and a vehicle. Background Art

[0002] New energy vehicles are the current trend in the automotive industry; the power battery, as the power source of new energy vehicles, is an essential part of new energy vehicles.

[0003] The power battery of a new energy vehicle can perform well only at an appropriate operating temperature. Currently, especially in northern regions, the ambient temperature in winter is relatively low, which will greatly affect the charging and discharging performance of the power battery. Also, for the user's riding experience in low temperatures, therefore, when driving a vehicle, it is necessary to preheat the entire vehicle including the power battery and the driver's cab; currently, generally, electric heaters such as PTC heaters and electric heating films are used to indirectly or directly preheat the vehicle.

[0004] Although the above method can achieve preheating of the vehicle, this preheating method using an electric heater will consume a large amount of power in the power battery, thereby affecting the cruising range of the vehicle and the user's vehicle use experience. Summary of the Invention

[0005] The present disclosure provides a preheating device for a vehicle and a vehicle. Its main purpose is to preheat the power battery of the vehicle without affecting the cruising range of the vehicle.

[0006] According to a first aspect of the present disclosure, there is provided a preheating device for a vehicle, including a battery circuit and a warm air circuit. One end of the warm air circuit is connected to the battery circuit through a four-way valve, and the other end is connected to a heater through a first three-way valve.

[0007] Optionally, the device further includes a motor circuit, the motor circuit is connected to the first end of a second three-way valve, the second end of the second three-way valve is connected to the four-way valve, and the third end of the second three-way valve is connected to the battery circuit.

[0008] Optionally, the device further includes:

[0009] The other end of the motor circuit is connected to the first end of a third three-way valve, the second end of the third three-way valve is connected to the battery circuit, and the third end of the third three-way valve is connected to the warm air circuit.

[0010] Optionally, the warm air circuit includes a front air conditioner heat exchanger and a rear air conditioner heat exchanger. The first end of the front air conditioner heat exchanger is connected to the first end of the first three-way valve, the first end of the rear air conditioner heat exchanger is connected to the second end of the first three-way valve, and the third end of the first three-way valve is connected to the heater;

[0011] The first end of the front air-conditioning heat exchanger is also connected to the third end of the third three-way valve;

[0012] The second end of the front air-conditioning heat exchanger is connected to the first end of the fourth three-way valve. The second end of the fourth three-way valve is connected to the battery circuit, and the third end of the fourth three-way valve is connected to the four-way valve;

[0013] The second end of the rear air-conditioning heat exchanger is connected to the four-way valve.

[0014] According to a third aspect of the present disclosure, a vehicle is provided, which includes the preheating device of the vehicle described in the first aspect.

[0015] The preheating device and vehicle of the vehicle provided by the present disclosure mainly include: a battery circuit and a warm air circuit. One end of the warm air circuit is connected to the battery circuit through a four-way valve, and the other end is connected to a heater through a first three-way valve. Compared with the related art, in the embodiments of the present application, by integrating different heaters, detecting the status information of the vehicle, and selecting a heater corresponding to the current vehicle status information according to the vehicle status information to preheat the vehicle, the vehicle can be preheated without consuming the power in the power battery, without affecting the vehicle's cruising range.

[0016] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. Description of the Drawings

[0017] The drawings are used to better understand the solution and do not constitute a limitation to the present disclosure. Among them:

[0018] Figure 1 It is a schematic structural diagram of a preheating device for a vehicle provided by an embodiment of the present disclosure. Detailed Embodiments

[0019] The following describes exemplary embodiments of the present disclosure with reference to the drawings. Various details of the embodiments of the present disclosure are included to assist in understanding, and they should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted below.

[0020] The following describes a preheating device, method, electronic device, and storage medium for a vehicle according to an embodiment of the present disclosure with reference to the drawings.

[0021] Figure 1A schematic structural diagram of a vehicle preheating device provided in an embodiment of the present disclosure.

[0022] like Figure 1 As shown, it includes a battery circuit 10 and a warm air circuit 20 , one end of the warm air circuit 20 is connected to the battery circuit 10 through a four-way valve 101 , and the other end is connected to a heater 103 through a first three-way valve 102 .

[0023] The first three-way valve 102 is Figure 1 The three-way valve 3 and the heater 103 are Figure 1 The diesel heater and PTC in the vehicle; the diesel heater and related accessories provide heat to the battery, cabin and heat source of the vehicle when it is not plugged in by heating the refrigerant; the PTC is the heat source of the vehicle when it is plugged in.

[0024] The vehicle preheating device provided by the present disclosure mainly includes: a battery circuit and a warm air circuit, one end of the warm air circuit is connected to the battery circuit through a four-way valve, and the other end is connected to the heater through a first three-way valve. Compared with the related art, the embodiment of the present application has different built-in heaters, detects the vehicle status information, and selects the heater corresponding to the current vehicle status information to preheat the vehicle according to the vehicle status information, thereby achieving preheating of the vehicle without consuming the power in the power battery and affecting the vehicle's cruising range.

[0025] In one possible implementation of the embodiment of the present application, the device also includes a motor circuit 30, which is connected to a first end of a second three-way valve 104, a second end of the second three-way valve 104 is connected to the four-way valve 101, and a third end of the second three-way valve 104 is connected to the battery circuit 10.

[0026] The second three-way valve 104 is Figure 1 The three-way valve 2 and the four-way valve 101 are Figure 1 Four-way valve in.

[0027] The second three-way valve 104 is used to control the battery circuit and the motor circuit to be connected in series or in parallel. When the battery is preheated, the refrigerant is controlled not to pass through the motor circuit.

[0028] In one implementable manner of the embodiment of the present application, the other end of the motor circuit 30 is connected to the first end of the third three-way valve 105, the second end of the third three-way valve 105 is connected to the battery circuit 10, and the third end of the third three-way valve 105 is connected to the warm air circuit 20.

[0029] The third three-way valve 105 is Figure 1The three-way valve 1 in [it]. The third three-way valve 105 controls the flow direction of the refrigerant output in the motor circuit to the battery circuit or the air-conditioning circuit, specifically determined according to the working conditions. For example, when heating the driver's cab, it controls the refrigerant to flow to the air-conditioning circuit; when heating the driver's cab and the battery simultaneously, it controls the refrigerant to flow to the battery circuit and the air-conditioning circuit simultaneously.

[0030] In an implementable manner of the embodiment of the present application, the warm air circuit 20 includes a front air-conditioning heat exchanger 201 and a rear air-conditioning heat exchanger 202. The first end of the front air-conditioning heat exchanger 201 is connected to the first end of the first three-way valve, the first end of the rear air-conditioning heat exchanger 202 is connected to the second end of the first three-way valve 102, and the third end of the first three-way valve 102 is connected to the heater 103;

[0031] The front air-conditioning heat exchanger 201 is the Figure 1 front HVAC in [it], and the rear air-conditioning heat exchanger 202 is the Figure 1 rear HVAC in [it].

[0032] The first end of the front air-conditioning heat exchanger 201 is further connected to the third end of the third three-way valve 105;

[0033] The second end of the front air-conditioning heat exchanger 201 is connected to the first end of the fourth three-way valve 106. The second end of the fourth three-way valve 106 is connected to the battery circuit 10, and the third end of the fourth three-way valve 106 is connected to the four-way valve 101;

[0034] By controlling the first three-way valve, it is determined whether the refrigerant in the motor circuit enters the rear air-conditioning heat exchanger for circulation after passing through the front air-conditioning heat exchanger. Under the battery preheating condition, the refrigerant is controlled to directly enter the battery circuit from the front air-conditioning heat exchanger.

[0035] The fourth three-way valve is the Figure 1 three-way valve 4 in [it]. By the three-way valve 4, the flow rate distribution of the refrigerant in the front air-conditioning heat exchanger and the rear air-conditioning heat exchanger is controlled. When the vehicle working condition is battery preheating, the refrigerant is controlled not to flow through the rear air-conditioning heat exchanger, and the front air-conditioning heat exchanger does not work.

[0036] The second end of the rear air-conditioning heat exchanger 202 is connected to the four-way valve 101.

[0037] When the preheating position is the front air conditioner, the coolant in the thermal management circuit sequentially passes through the PTC heater (operating), the diesel heater (not operating), the outlet 2 of the three-way valve 4, the outlet 1 of the three-way valve 3, the expansion tank, the outlet 2 of the four-way valve, and the heater water pump to achieve preheating of the front air conditioner; when the preheating position is the rear air conditioner, the coolant in the thermal management circuit sequentially flows through the PTC heater (operating), the diesel heater (not operating), the outlet 3 of the three-way valve 4, the expansion tank, the outlet 2 of the four-way valve, and the heater water pump to achieve preheating of the rear air conditioner; when the preheating position is to preheat the front and rear air conditioners simultaneously, the three-way valve 4 controls the opening degrees of the outlet 1 and the outlet 2 to achieve simultaneous preheating; as an implementable way of the embodiment of the present application, the valve opening degrees of the front air conditioner and the rear air conditioner can be set to 3:7, and after the rear heater reaches a certain temperature (less than the preheating temperature), the valve opening degrees can be set to 7:3, which can be specifically set according to the actual application scenario, and the embodiment of the present application does not limit this.

[0038] When the preheating position is the power battery, the coolant in the thermal management circuit sequentially flows through the PTC (operating), the diesel heater (not operating), the three-way valve 4, the front air conditioner (not operating), the outlet 2 of the three-way valve 3, the battery water pump, the Chiller, the battery, the outlet 2 of the four-way valve, and the heater water pump to achieve preheating of the power battery.

[0039] When the preheating position is the power battery, the front air conditioner, and the rear air conditioner of the vehicle, the flow direction of the coolant in the thermal management circuit is the same as that for preheating the power battery alone, but at this time the front air conditioner is operating, and the driver's cab is preheated through the front air conditioner. After the preheating temperature of the power battery reaches the preset temperature, the preheating of the power battery is stopped, the valve opening degrees in the circuit are adjusted, and it is switched to the preheating working condition of the front air conditioner and the rear air conditioner.

[0040] When the vehicle is running, the coolant is used to cool the motor and the vehicle is preheated based on the cooling; when the preheating position is the power battery, the flow direction of the coolant in the thermal management circuit is: motor, outlet 2 of the three-way valve 1, front air conditioner (not operating), outlet 2 of the three-way valve 3, battery water pump, Chiller, battery, outlet 3 of the four-way valve, outlet 2 of the three-way valve 2, power water pump, DCDC&PDU, motor controller to achieve preheating of the power battery.

[0041] When the preheating position is the front air conditioner, the flow direction of the coolant in the thermal management circuit is: motor, outlet 2 of the three-way valve 1, front air conditioner, outlet 1 of the three-way valve 2, expansion tank, outlet 3 of the four-way valve, outlet 2 of the three-way valve 2, power water pump, DCDC&PDU, motor controller to achieve preheating of the front air conditioner

[0042] When the preheating position is the rear air conditioner, the flow direction of the coolant in the thermal management circuit is as follows: motor, outlet 2 of three-way valve 1, front air conditioner (not working), outlet 1 of three-way valve 3, expansion tank, outlet 2 of four-way valve, heater water pump, PTC (not working), diesel heater (not working), outlet 3 of three-way valve 4, expansion tank, outlet 3 of four-way valve, outlet 2 of three-way valve 2, power water pump, DCDC&PDU, motor controller, to achieve preheating of the rear air conditioner.

[0043] When the preheating positions are the front air conditioner and the rear air conditioner, the flow direction of the coolant in the thermal management circuit is as follows: motor, outlet 2 of three-way valve 1, front air conditioner, outlet 1 of three-way valve 3, expansion tank, outlet 2 of four-way valve, heater water pump, PTC (not working), diesel heater (not working), outlet 3 of three-way valve 4, expansion tank, outlet 3 of four-way valve, outlet 2 of three-way valve 2, power water pump, DCDC&PDU, motor controller, to achieve preheating of the front air conditioner and the rear air conditioner.

[0044] When the preheating positions are the power battery, the front air conditioner and the rear air conditioner, the flow direction of the coolant in the thermal management circuit is as follows: motor, outlet 2 of three-way valve 1, front air conditioner (working), outlet 2 of three-way valve 3, battery water pump, Chiller, battery, outlet 3 of four-way valve, outlet 2 of three-way valve 2, power water pump, DCDC&PDU, motor controller. After the temperature of the power battery reaches the preheating temperature, stop preheating the power battery, adjust the valves, and switch to the preheating condition of the front air conditioner and the rear air conditioner.

[0045] In an implementable manner of the embodiment of the present application, when using the motor to preheat the preheating position, after the preheating position reaches the preset temperature threshold, different from the diesel heater and the electric heater, the motor will not stop generating heat. At this time, after the coolant flows through the motor in the thermal management circuit, it flows through the cooling module through outlet 3 of three-way valve 1 to cool the coolant.

[0046] Expansion tanks are provided between the motor and three-way valve 1 and before the four-way valve 1 to prevent the coolant from expanding due to heat and damaging the heating circuit.

[0047] In the scenario where the vehicle encounters a red light or is stuck in traffic for a long time, if the heating source is frequently replaced and the opening degree of the valve in the thermal management circuit is frequently changed, it will not only result in a poor user experience but also cause unnecessary waste of the vehicle's power resources. Therefore, after determining the change in the vehicle status information, it is set that the heating source changes after a preset time interval, and it is detected whether a second change occurs in the vehicle status during the preset time interval. If a second change occurs, the heating source is not changed, and if the vehicle status after the second change is also different from the initial vehicle status, the heating source is confirmed based on the vehicle status after the second change, and the preset time interval for the heating source change is set; the preset time interval is an empirical value and can be set to 90 seconds or 80 seconds. The embodiments of the present application do not limit the specific value.

[0048] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this new type can be achieved. There is no limitation herein.

[0049] The above specific implementation manners do not constitute a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that various modifications, combinations, sub - combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A vehicle preheating device, characterized in that: It includes a battery circuit and a heating circuit, wherein one end of the heating circuit is connected to the battery circuit via a four-way valve, and the other end is connected to the heater via a first three-way valve; Wherein, the device further comprises a motor circuit, wherein the motor circuit is connected to a first end of a second three-way valve, a second end of the second three-way valve is connected to the four-way valve, and a third end of the second three-way valve is connected to the battery circuit; The other end of the motor circuit is connected to the first end of the third three-way valve, the second end of the third three-way valve is connected to the battery circuit, and the third end of the third three-way valve is connected to the warm air circuit; The warm air circuit includes a front air conditioning heat exchanger and a rear air conditioning heat exchanger, the first end of the front air conditioning heat exchanger is connected to the first end of the first three-way valve, the first end of the rear air conditioning heat exchanger is connected to the second end of the first three-way valve, and the third end of the first three-way valve is connected to the heater; The first end of the front air-conditioning heat exchanger is also connected to the third end of the third three-way valve; The second end of the front air-conditioning heat exchanger is connected to the first end of the fourth three-way valve, the second end of the fourth three-way valve is connected to the battery circuit, and the third end of the fourth three-way valve is connected to the four-way valve; The second end of the rear air-conditioning heat exchanger is connected to the four-way valve.

2. A vehicle, characterized in that: The vehicle comprises the vehicle preheating device according to claim 1 .

Images