Headlamp liquid cooling system, control method and vehicle

Abstract

The embodiment of the invention provides a headlamp liquid cooling system, a control method and a vehicle, and relates to the technical field of vehicle equipment control. The headlamp liquid cooling system comprises a main cooling loop used for cooling equipment of a vehicle body, a first communication structure is arranged in the main cooling loop, and the main cooling loop inputs cooling liquid into a headlamp cooling loop through a first passage of the first communication structure; the headlamp cooling circuit is used for cooling a headlamp of the vehicle; and the controller is used for determining the collision state of the vehicle based on the driving parameters of the vehicle and controlling the first communication structure to close the first passage under the condition that the vehicle is in the first collision state. In this way, when collision occurs, the cooling liquid in the main cooling loop is prevented from leaking through the headlamp cooling loop, it is guaranteed that the cooling liquid in the main cooling loop can meet the circulation requirement of the main cooling loop sufficiently, a series of secondary risks possibly caused by leakage of the cooling liquid are reduced to the maximum extent, and maintenance personnel can conduct maintenance conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle equipment control. Specifically, it relates to a headlamp liquid cooling system, a control method, and a vehicle. Background Art

[0002] With the continuous progress of vehicle lighting technology, DLP (Digital Light Processing) headlamps have become increasingly common in vehicle headlamp systems due to their significant advantages such as high resolution and intelligent control. At the same time, DLP headlamps generate a large amount of heat during operation. Among the current headlamp heat dissipation methods, liquid cooling technology, as an emerging heat dissipation method, is gradually attracting attention. Liquid cooling uses the high specific heat capacity and good thermal conductivity of liquids, and has advantages such as higher heat dissipation efficiency, relatively flexible system design, and the ability to handle larger heat loads.

[0003] However, there is a serious potential risk in the headlamp liquid cooling system, that is, the problem of coolant leakage. When a vehicle collision occurs, the position where the headlamp is located is easily impacted, and components such as coolant pipes, joints, and radiators in the liquid cooling system may be damaged due to the collision, resulting in coolant leakage. This coolant leakage situation will not only seriously affect the heat dissipation function of the headlamp, but may also damage other components of the vehicle, endangering the overall safety of the vehicle.

[0004] Therefore, there is an urgent need to propose a headlamp liquid cooling system and a control method to address the problem of coolant leakage after a collision. Summary of the Invention

[0005] Based on the above technical problems, the embodiments of the present application provide a headlamp liquid cooling system, a control method, and a vehicle, aiming to address the problem of coolant leakage in the headlamp cooling circuit after a collision, avoid affecting other components of the vehicle, and improve the driving safety of the vehicle.

[0006] In the first aspect of the embodiments of the present application, a headlamp liquid cooling system is provided, and the system includes:

[0007] A main cooling circuit, which is used to cool the equipment of the vehicle body through coolant. Among them, a first connection structure is provided in the main cooling circuit, and the main cooling circuit inputs the coolant into the headlamp cooling circuit through the first path of the first connection structure;

[0008] A headlamp cooling circuit, which is used to cool the headlamp of the vehicle by receiving the coolant input from the main cooling circuit;

[0009] A controller, which is configured to determine the collision state of the vehicle based on the driving parameters of the vehicle, and control the first connection structure to close the first passage when the vehicle is in the first collision state.

[0010] Optionally, the main cooling circuit further includes a second connection structure, and the headlight cooling circuit is configured to input coolant into the main cooling circuit through the second connection structure;

[0011] The headlight cooling circuit includes a check valve, which is arranged on the fluid passage between the headlight and the second connection structure, and includes a first end far from the second connection structure and a second end close to the second connection structure;

[0012] The check valve is configured to remain open when the coolant in the headlight cooling circuit flows from the first end to the second end, and remain closed when the coolant in the headlight cooling circuit flows from the second end to the first end.

[0013] Optionally, on the fluid passage between the headlight and the second connection structure, the check valve is arranged close to the second connection structure.

[0014] Optionally, the headlight liquid cooling system includes an acceleration sensor, a first pressure sensor and a second pressure sensor;

[0015] The acceleration sensor is used to measure the acceleration change of the headlight;

[0016] The first pressure sensor is used to measure the change in the pressure value in the main cooling circuit;

[0017] The second pressure sensor is used to measure the change in the pressure value in the headlight cooling circuit;

[0018] The controller is configured to determine the collision state of the vehicle based on the driving parameters of the vehicle, including:

[0019] The controller is configured to receive the acceleration change of the headlight, the change in the pressure value in the main cooling circuit and the change in the pressure value in the headlight cooling circuit, and determine the collision state.

[0020] Optionally, the system further includes: a coolant storage unit;

[0021] The coolant storage unit is communicated with the main cooling circuit, and is used to store coolant and input the coolant into the main cooling circuit;

[0022] A liquid level sensor is provided in the coolant storage unit, and the liquid level sensor is used to measure the coolant reserve in the coolant storage unit. When in the first collision state, the controller obtains the measurement result of the coolant reserve in the coolant storage unit measured by the liquid level sensor.

[0023] A second aspect of an embodiment of the present application provides a method for controlling a headlamp liquid cooling system, the method comprising:

[0024] The controller obtains the driving parameters of the vehicle;

[0025] The controller determines a collision state of the vehicle based on a driving parameter of the vehicle;

[0026] The controller generates a first signal and sends it to a first communication structure when determining that the vehicle is in a first collision state;

[0027] The first communication structure closes the first passage of the first communication structure in response to the first signal.

[0028] Optionally, when the controller determines that the vehicle is in a first collision state, the method includes:

[0029] The controller obtains a measurement result of the coolant reserve in the coolant storage unit measured by a liquid level sensor, and issues an alarm signal when the coolant reserve is insufficient to meet the circulation demand of the main cooling circuit.

[0030] Optionally, the controller determines the collision state of the vehicle based on a driving parameter of the vehicle, and the method includes:

[0031] The controller obtains a change in acceleration of the headlamp, a change in pressure in the main cooling circuit, and a change in pressure in the headlamp cooling circuit;

[0032] The controller determines a collision state of the vehicle based on an acceleration change of the headlamp, a pressure value change in the main cooling circuit, and a pressure value change in the headlamp cooling circuit.

[0033] Optionally, the controller determines the collision state of the vehicle based on the acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit, and the method includes:

[0034] The controller performs weighted summation on the received acceleration change of the headlamp, the pressure change in the main cooling circuit, and the pressure change in the headlamp cooling circuit to calculate a collision result value;

[0035] The controller determines that the vehicle is in the first collision state when the collision result value is greater than a collision threshold.

[0036] In a third aspect of an embodiment of the present application, a vehicle is provided, comprising the headlamp liquid cooling system as described in the first aspect of the present application, and / or executing the headlamp liquid cooling system control method as described in the second aspect of the present application.

[0037] In a fourth aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the headlamp liquid cooling system control method as described in the second aspect of the present application.

[0038] In a fifth aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the headlamp liquid cooling system control method as described in the second aspect of the present application is implemented.

[0039] Through the headlamp liquid cooling system of the embodiment of the present application, a first connecting structure arranged in the main cooling circuit is utilized so that the coolant in the main cooling circuit is input into the headlamp cooling circuit through the first passage to cool the vehicle headlamps. At the same time, the first connecting structure is controlled by a controller in the vehicle. When the controller determines that the vehicle is in a first collision state based on the vehicle's driving parameters, the controller controls the first connecting structure to close the first passage leading to the headlamp cooling circuit.

[0040] In the present application, by controlling the first connecting structure, when it is determined that there may be a risk of leakage in the headlamp cooling circuit after a vehicle collision, the first passage input into the headlamp cooling circuit is closed in time to prevent the coolant in the main cooling circuit from leaking through the headlamp cooling circuit, thereby ensuring that the coolant in the main cooling circuit is sufficient to meet the circulation needs of the main cooling circuit and avoiding affecting the heat dissipation of the vehicle main equipment associated with the main cooling circuit; in addition, the timely closing of the first passage reduces the leakage of coolant after a collision, thereby minimizing a series of secondary risks that may be caused by coolant leakage, such as short circuit faults caused by coolant contacting the vehicle electrical circuit, corrosion damage caused by coolant leakage to other components, and other adverse consequences; at the same time, the fault is isolated in the headlamp cooling circuit, so that when performing fault repair, the maintenance personnel only need to inspect the headlamp cooling circuit, such as checking the status of its pipes and valves, thereby reducing the maintenance volume, cost and vehicle downtime, and improving maintenance efficiency and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 is a schematic diagram of a headlamp liquid cooling system proposed in an embodiment of the present application;

[0043] Figure 2 is a flowchart of a control method for a headlamp liquid cooling system proposed in an embodiment of the present application;

[0044] Figure 3 is a schematic diagram of an electronic device shown in an embodiment of the present application. Detailed implementation manners

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0046] In the drawings, sometimes for clarity, the sizes of the constituent elements, the thicknesses of the layers, or the areas may be exaggerated. Therefore, any implementation manner of the present disclosure is not necessarily limited to the sizes shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and any implementation manner of the present disclosure is not limited to the shapes or values shown in the drawings.

[0047] In the related art, there are various heat dissipation methods for headlamps, such as air-cooled heat dissipation, heat pipe heat dissipation, heat dissipation by combining fins and heat-conducting materials, and liquid-cooled heat dissipation. As an emerging technology among them, compared with the traditional air-cooled heat dissipation, liquid-cooled heat dissipation has higher heat dissipation efficiency and can better meet the heat dissipation requirements of high-power headlamps; compared with heat pipe heat dissipation, its system design is relatively flexible and is not strictly limited by the installation position and angle; compared with the heat dissipation method of combining heat dissipation fins and heat-conducting materials, liquid-cooled heat dissipation can handle a larger heat load. However, after a vehicle collision, there is no effective method proposed in the related art for fault control of the headlamp liquid cooling system.

[0048] Therefore, based on the problems faced when the liquid-cooled heat dissipation method is applied to vehicle headlamps, in the first aspect of the embodiments of the present application, a headlamp liquid cooling system is proposed, including:

[0049] A main cooling circuit for cooling the devices of a vehicle body by means of a coolant. A first communication structure is provided in the main cooling circuit. The main cooling circuit inputs the coolant into a headlight cooling circuit through a first passage of the first communication structure.

[0050] A headlight cooling circuit for cooling the headlights of the vehicle by receiving the coolant input from the main cooling circuit.

[0051] A controller for determining the collision state of the vehicle based on the driving parameters of the vehicle and controlling the first communication structure to close the first passage when the vehicle is in a first collision state.

[0052] In the embodiments of the present application, in order to solve the problems existing in the related art, a headlight liquid cooling system is proposed, which mainly includes two parts: a main cooling circuit and a headlight cooling circuit. The main cooling circuit is used to cool the devices of the vehicle body, including the engine, battery pack, etc. In different vehicle designs, there may be multiple coolant circuits. Here, only one cooling circuit that leads to the headlight cooling circuit is considered as the main cooling circuit. The headlight cooling circuit, as a branch of the main cooling circuit, mainly functions to cool the vehicle headlights. It is located at the front end of the vehicle and is prone to leakage risks due to faults such as collisions.

[0053] Therefore, in order to prevent the situation that the normal operation of the main cooling circuit is affected by the leakage of the headlight cooling circuit, the present application provides a first communication structure at the node position where the coolant in the main cooling circuit flows into the headlight cooling circuit. When the coolant in the main cooling circuit flows to the first communication structure, it is input into the headlight cooling circuit through the first passage therein and continues to circulate in the main cooling circuit through the second passage therein. The first passage is the passage in the first communication structure that flows in the direction of the headlight cooling circuit, and the second passage is the passage in the first communication structure that flows in the direction of the main cooling circuit. After a collision occurs, the first communication structure closes the first passage under the control of the controller, thereby avoiding the coolant in the main cooling circuit from continuing to flow into the headlight cooling circuit and causing leakage. In an optional embodiment, the first communication structure can be an electromagnetic three-way valve. After the coolant flows in, it can flow from the first outlet of the electromagnetic three-way valve, i.e., the first passage, to the headlight cooling circuit and from the second outlet, i.e., the second passage, to the main cooling circuit. Moreover, the electromagnetic three-way valve can be controlled by the controller to select and close the passage it controls.

[0054] After a collision occurs or is likely to occur, the controller in the vehicle determines the collision state of the vehicle based on the collected driving parameters of the vehicle, that is, whether the vehicle has collided, the degree of collision, and whether the headlight cooling circuit has a leakage phenomenon, etc. When it is determined that the collision state is the first collision state, that is, the collision of the vehicle may cause the headlight cooling circuit to leak, the first connection structure is controlled to close the first passage, so as to prevent the coolant in the main cooling circuit from continuing to leak through the headlight cooling circuit, resulting in a decline in the cooling performance of the vehicle body equipment related to the main cooling circuit and causing an overheating failure. In an alternative embodiment, the controller may be a VCU (Vehicle Control Unit), which, as the core control unit of a new energy vehicle, receives various driving parameters collected by vehicle sensors, calculates and determines whether a collision has occurred and the degree of collision, and then decides whether to control the first connection structure to close the first passage.

[0055] Combined with the above embodiments, in an implementation manner, the present application further provides a fault handling system, wherein the main cooling circuit further includes a second connection structure, and the headlight cooling circuit is configured to input coolant into the main cooling circuit through the second connection structure.

[0056] After the coolant in the main cooling circuit is input into the headlight cooling circuit through the first passage of the first connection structure, after cooling and dissipating heat from the headlight, it still needs to be input back into the main cooling circuit, and the coolant is collectively cooled by the radiator. The cooled coolant continues to perform the next round of circulating cooling of the equipment in the vehicle. Therefore, in addition to the first connection structure, the connection position between the headlight cooling circuit and the main cooling circuit further includes a second connection structure for inputting the coolant in the headlight cooling circuit back into the main cooling circuit. In an alternative implementation, the second connection structure may be a tee, which includes two input ends respectively connected to the headlight cooling circuit and the main cooling circuit, and an output end connected to the main cooling circuit for merging the coolant in the headlight cooling circuit into the main cooling circuit again.

[0057] Due to the existence of the second connection structure, when a collision occurs in the vehicle and the headlight cooling circuit may leak, there is also a risk that the coolant in the main cooling circuit will flow back into the headlight cooling circuit and leak through the second connection structure. Therefore, a check valve is provided in the headlight cooling circuit. The check valve is arranged on the fluid passage between the headlight and the second connection structure, and includes a first end far from the second connection structure and a second end close to the second connection structure; the check valve is configured to remain open when the coolant in the headlight cooling circuit flows from the first end to the second end, and to remain closed when the coolant in the headlight cooling circuit flows from the second end to the first end.

[0058] By providing a one-way valve, coolant in the headlamp cooling circuit can only flow from the first end to the second end of the one-way valve. If a leak occurs in the headlamp cooling circuit, the coolant pressure in the headlamp cooling circuit drops below the normal pressure in the main cooling circuit. Due to the pressure differential, the coolant tends to flow from the main cooling circuit into the headlamp cooling circuit. Since the one-way valve is provided in the headlamp cooling circuit, the one-way valve remains closed when coolant flows from the second end to the first end, preventing coolant from flowing back into the headlamp cooling circuit through the second connecting structure and causing leakage. In an alternative embodiment, the one-way valve can be a check valve. Its mechanical design provides a one-way isolation function, effectively preventing coolant in the main cooling circuit from flowing back into the headlamp cooling circuit and causing leakage.

[0059] In combination with the above embodiments, in one implementation, the present application further provides a fault handling system, including:

[0060] The one-way valve is disposed near the second communication structure on a fluid passage between the headlamp and the second communication structure.

[0061] In the embodiment of the present application, a one-way valve is provided in the headlamp cooling circuit to prevent the coolant in the main cooling circuit from flowing back into the headlamp cooling circuit and causing leakage. However, if the location where the headlamp circuit is damaged and leaks is between the one-way valve and the second connecting structure, then the coolant in the main cooling circuit will directly flow back into the damaged location in the headlamp cooling circuit through the second connecting structure under the action of pressure and cause leakage. Therefore, in order to avoid this situation, the one-way valve should be set in the fluid passage between the headlamp and the second connecting structure in the headlamp cooling circuit, and should be set as close to the second connecting structure as possible.

[0062] In combination with the above embodiments, in one implementation, the present application further provides a fault handling system, including: an acceleration sensor, a first pressure sensor, and a second pressure sensor;

[0063] The acceleration sensor is used to measure the acceleration change of the headlamp;

[0064] The first pressure sensor is used to measure the pressure change in the main cooling circuit;

[0065] The second pressure sensor is used to measure the pressure change in the headlamp cooling circuit;

[0066] The controller is configured to determine a collision state of the vehicle based on a driving parameter of the vehicle, comprising:

[0067] The controller is configured to receive the acceleration change amount of the headlamp, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlamp cooling circuit, and determine the collision state.

[0068] In an embodiment of the present application, the controller needs to determine the collision state of the vehicle based on the driving parameters of the vehicle, where the driving parameters are obtained through an acceleration sensor, a first pressure sensor, and a second pressure sensor. After receiving the acceleration change amount of the headlamp, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlamp cooling circuit, the controller performs calculations through a pre-set algorithm, and the calculation result is used to determine the collision state of the vehicle.

[0069] Among them, the acceleration sensor is arranged at the front end of the vehicle body, and can be one or more. Specifically, it can be arranged at positions around the headlamp, and is responsible for measuring the acceleration change amount borne by the headlamp at the moment of collision. Its measurement data can directly reflect the magnitude of the collision impact force. In an alternative embodiment, the acceleration sensor can also be arranged on the internal structure of the headlamp, which can more intuitively reflect the impact force borne by the headlamp during collision.

[0070] The first pressure sensor is mainly used to measure the change amount of the coolant pressure value in the main cooling circuit, and can be one or more, which can comprehensively monitor the pressure fluctuations of the coolant in the main cooling circuit under various working conditions of the vehicle. Usually, the first pressure sensor can be arranged at the inlet and outlet of the radiator in the main cooling circuit, the inlet and outlet of the circulation pump, etc., to facilitate grasping the change of the pressure value in the main cooling circuit in a timely manner.

[0071] The second pressure sensor is arranged in the headlamp cooling circuit, and can be one or more. Its main function is to monitor the pressure value of the coolant in the headlamp cooling circuit. In the case of a collision resulting in leakage in the headlamp cooling circuit, the change in the pressure value in the second pressure sensor can best reflect the occurrence of the leakage phenomenon.

[0072] In an alternative embodiment, the acceleration sensor, the first pressure sensor, and the second pressure sensor perform information interaction with the vehicle controller through a high-speed data bus, ensuring that the measured data can be sent to the controller for calculation in a timely manner, and promptly determining whether there is a phenomenon of leakage in the cooling circuit caused by a collision, facilitating timely discovery of problems and taking corresponding measures.

[0073] Combining the above embodiments, in one implementation manner, the present application further provides a fault handling system, where the headlamp liquid cooling system includes a coolant storage unit, and the coolant storage unit is communicated with the main cooling circuit for storing coolant and inputting the coolant into the main cooling circuit.

[0074] In the embodiments of the present application, during the process of the coolant in the main cooling circuit cooling and lowering the temperature of the equipment of the vehicle body, there will also be natural loss of the coolant. Therefore, a coolant storage unit, such as a liquid storage tank, a water storage bottle, etc., needs to be provided in the liquid cooling system to supplement the consumed coolant.

[0075] In order to determine the remaining amount of the coolant in the coolant storage unit, a liquid level sensor is provided therein, and the liquid level sensor is used to measure the coolant storage amount in the coolant storage unit.

[0076] During normal use, the coolant in the coolant storage unit is used to supplement the consumption caused by natural loss, and can be measured by the liquid level sensor to prevent the situation that the coolant is exhausted without being replenished. However, after a collision occurs, since the headlamp cooling circuit may be damaged, resulting in the leakage of the coolant from the headlamp cooling circuit, causing a large amount of coolant to be replenished from the coolant storage unit to the main cooling circuit, and the leakage speed is much greater than the consumption speed of the coolant during normal use. Therefore, there may be a situation where the coolant in the coolant storage unit is excessively lost and is not sufficient to meet the normal circulation use requirements of the main cooling circuit.

[0077] To avoid this problem, in the case of the first collision state, the controller obtains the measurement result of the liquid level sensor measuring the coolant storage amount in the coolant storage unit. By obtaining the measurement result of the coolant storage amount after determining the first collision state, the controller can confirm whether the coolant storage amount meets the circulation requirements of the main cooling circuit in the first time, and avoid the cooling performance of the vehicle body equipment related to the main cooling circuit from decreasing due to insufficient coolant and generating an overheating fault.

[0078] As Figure 1 shown, Figure 1FIG. 0 is a schematic diagram of a headlight liquid cooling system proposed in an embodiment of the present application. The solid line part of the arrow represents the main cooling circuit, the dashed line part of the arrow represents the headlight cooling circuit, and the arrow direction indicates the flow direction of the coolant in the cooling circuit. The main cooling circuit is connected to the headlight cooling circuit through the first connection structure and the second connection structure. The coolant is input from the main cooling circuit to the headlight cooling circuit through the first passage of the first connection structure. After cooling the headlight, it is then input into the main cooling circuit through the one-way valve by the second connection structure, and circulates normally in the main cooling circuit through the second passage of the second connection structure. The coolant in the main cooling circuit cools the equipment of the vehicle body. Here, the heat dissipation unit represents each device that needs to dissipate heat associated with the main cooling circuit. After that, the coolant is cooled by the radiator and then undergoes the next cycle. The coolant storage unit is connected to the main cooling circuit to supplement the coolant to the main cooling circuit. A circulation pump is also provided in the system to drive the coolant to circulate in the main cooling circuit and the headlight cooling circuit, ensuring efficient heat transfer and stable operation of the system.

[0079] In an alternative embodiment, after a collision occurs, the controller can also adjust the rate of the circulation pump in the main cooling circuit according to the collision state. For example, when a collision occurs, the rate of the circulation pump is reduced or the circulation pump is stopped to avoid a large amount of coolant leakage due to damage to the headlight cooling circuit. After no leakage occurs or the first passage of the first connection structure has been controlled to close, the rate of the circulation pump is adjusted back to the normal state to ensure the normal circulation of the coolant in the main cooling circuit.

[0080] Based on the same inventive concept, a second aspect of the embodiments of the present application also proposes a control method for a headlight liquid cooling system, as Figure 2 shown Figure 2 FIG. 10 is a flowchart of a control method for a headlight liquid cooling system provided in an embodiment of the present application. This method is applied to the headlight liquid cooling system in the embodiments of the present application and specifically includes the following steps:

[0081] Step S201: The controller obtains the driving parameters of the vehicle;

[0082] Step S202: The controller determines the collision state of the vehicle based on the driving parameters of the vehicle;

[0083] Step S203: When the controller determines that the vehicle is in the first collision state, a first signal is generated and sent to the first connection structure;

[0084] Step S204: The first connection structure responds to the first signal and closes the first passage of the first connection structure.

[0085] In an embodiment of the present application, a method for controlling a headlamp liquid cooling system is proposed. First, the controller needs to obtain the driving parameters of the vehicle, and calculate and judge based on the driving parameters to determine the current collision state of the vehicle. When it is determined that the vehicle is in a first collision state, that is, when the headlamp cooling circuit may leak due to the collision, the controller will generate a first signal and send it to a first connecting structure. The first signal is used to control the first connecting structure to close the first passage. After receiving the first signal, the first connecting structure executes a corresponding instruction to close the first passage through which the main cooling circuit flows into the headlamp cooling circuit, so as to avoid excessive leakage of coolant due to damage to the headlamp cooling circuit, thereby affecting the normal function of the main cooling circuit.

[0086] Step S201: The controller obtains the driving parameters of the vehicle.

[0087] In embodiments of the present application, a vehicle controller, such as a VCU (vehicle controller unit), serves as the vehicle's core control unit and coordinates and manages the operation of various vehicle systems, including the headlamp liquid cooling system proposed in this application. To determine whether the liquid cooling system is operating properly, it is necessary to obtain vehicle driving parameters. These parameters may include: acceleration changes around the headlamps, pressure changes in the main cooling circuit, pressure changes in the headlamp cooling circuit, vehicle speed, motor speed, engine status, and other parameters. Using these various driving parameters, the controller coordinates and controls the vehicle to ensure safe and efficient operation.

[0088] Step S202: The controller determines the collision state of the vehicle based on the driving parameters of the vehicle.

[0089] In an embodiment of the present application, in order to determine the vehicle's collision status, the controller needs to collect the vehicle's driving parameters, primarily including: the acceleration change around the headlights, the pressure change in the main cooling circuit, and the pressure change in the headlight cooling circuit. Based on these driving parameters, the controller determines the vehicle's collision status, whether a collision has occurred, and whether the severity of the collision will affect the headlight liquid cooling system. Specifically, the vehicle can determine whether a collision has occurred based on the real-time collection of the above data, or it can determine the severity of the collision based on the above data after determining that a collision has occurred. By having the controller determine the collision status based on the driving parameters, the collision status determination is rational and traceable, effectively avoiding the occurrence of erroneous collision status determinations due to overly sensitive sensors generating erroneous information.

[0090] Step S203: When determining that the vehicle is in a first collision state, the controller generates a first signal and sends it to a first communication structure.

[0091] In the embodiments of the present application, when the controller determines the collision degree of the vehicle according to the driving parameters of the vehicle, including but not limited to: no collision, collision but no damage to vehicle equipment, collision and damage to vehicle equipment, etc. Here, the situation where a collision of the vehicle may cause leakage in the headlight cooling circuit can be regarded as the first collision state. After the controller determines that the vehicle is in the first collision state, it needs to react in a timely manner, that is, generate a first signal and send it to the first connection structure in the main cooling circuit.

[0092] Step S204: In response to the first signal, the first connection structure closes the first passage of the first connection structure.

[0093] In the embodiments of the present application, after the first connection structure receives the first signal sent by the controller, it closes the first passage leading to the headlight cooling circuit in the first instance, cuts off the inflow of the coolant in the headlight cooling circuit, and timely avoids the coolant leakage caused by the breakage of the headlight cooling circuit. In this way, the opening and closing of the first passage for the coolant flowing into the headlight cooling circuit can be controlled, effectively controlling the headlight cooling circuit, and timely avoiding the occurrence of risk accidents, and preventing the headlight cooling circuit prone to collision from affecting the normal operation of the main cooling circuit.

[0094] Combined with the above embodiments, in one implementation manner, the present application further provides a control method for a headlight liquid cooling system. When the controller determines that the vehicle is in the first collision state, it specifically includes the following content:

[0095] The controller obtains the measurement result of the coolant storage in the coolant storage unit measured by the liquid level sensor, and issues an alarm signal when the coolant storage is insufficient to meet the circulation requirement of the main cooling circuit. In the embodiments of the present application, when the controller determines that the current vehicle is in the first collision state, it not only needs to timely close the first passage for inputting the headlight cooling circuit, but also needs to timely confirm whether the coolant storage in the coolant storage unit meets the circulation requirement of the main cooling circuit. The specific method is that the controller obtains the measurement result of the coolant storage in the coolant storage unit measured by the liquid level sensor, and when the coolant storage is insufficient to meet the circulation requirement of the main cooling circuit, it timely issues an alarm signal to the user. In this way, it is avoided that due to the too high collision degree, the coolant leakage is serious, a large amount of coolant has leaked before the first connection structure is controlled to close the first passage, but the user is not informed in time, which may lead to the situation that the coolant is insufficient to meet the circulation requirement of the main cooling circuit and affect the normal operation of the relevant equipment in the main cooling circuit.

[0096] In an embodiment of the present application, a liquid level sensor is disposed within the coolant storage unit to measure the coolant level. Based on the measurement results, the controller determines whether the coolant level is below a preset level and can generate an alarm signal when the coolant level falls below the preset level, prompting the user to replenish the coolant promptly. In an optional embodiment, the controller can proactively query the liquid level sensor for the current coolant level upon determining that the vehicle is in the first collision state, thereby avoiding missing the optimal time for troubleshooting due to delayed alarms.

[0097] In an embodiment of the present application, after obtaining the measurement results of the liquid level sensor, the controller also needs to confirm whether the coolant reserves meet the circulation requirements of the main cooling circuit. If the remaining coolant reserves are insufficient to meet normal circulation requirements, the controller needs to promptly issue an alarm signal to the user, reporting the insufficient coolant reserves and reminding the user to replenish the coolant in a timely manner to avoid dangerous situations such as cavitation in the circulation pump and overheating of the heating equipment due to insufficient coolant. The controller can issue an alarm signal to the user through various human-computer interaction methods to alert the user to the insufficient coolant reserve fault. In an optional embodiment, the controller can provide feedback of the alarm signal to the user through the instrument panel, prompting the user to take timely action.

[0098] In combination with the above embodiments, in one implementation, the present application further provides a method for controlling a headlamp liquid cooling system, wherein the controller determines a collision state of the vehicle based on driving parameters of the vehicle, specifically including the following:

[0099] First, the controller obtains a change in acceleration of the headlamp, a change in pressure in the main cooling circuit, and a change in pressure in the headlamp cooling circuit;

[0100] In an embodiment of the present application, the controller needs to determine the collision state of the vehicle based on the driving parameters of the vehicle. In the present application, the driving parameters of the vehicle are mainly measured based on the headlight sensor, the first pressure sensor and the second pressure sensor, wherein the acceleration change of the headlight intuitively reflects the impact of the collision around the headlight, and the more severe the collision, the greater the acceleration change; the first pressure sensor measures the change in the pressure value in the main cooling circuit, which is used to confirm whether there is an abnormal pressure value change in the main cooling circuit after the collision, and whether leakage is caused by the collision; the second pressure sensor measures the pressure value change in the headlight cooling circuit, which is used to confirm whether coolant leakage occurs in the headlight cooling circuit, thereby significantly reducing the pressure.

[0101] Then, the controller determines a collision state of the vehicle based on the acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit.

[0102] In the embodiment of the present application, the controller respectively obtains the measurement values of the headlight sensor, the first pressure sensor, and the second pressure sensor, and obtains the acceleration change amount of the headlight, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlight cooling circuit, and uses these as the judgment basis to determine the collision state of the vehicle and adopt corresponding strategies.

[0103] In an alternative embodiment, if after a collision, the controller determines that the collision state of the vehicle is not the first collision state, the risk escalation can be avoided by increasing the monitoring frequency. For example, when the vehicle has a collision but the collision degree is relatively light and there is no large-scale coolant leakage situation immediately, but there may be a slight and slow liquid leakage. The controller determines that the vehicle is not in the first collision state. In this case, by increasing the sensor acquisition frequency, the pressure changes in the headlight cooling circuit and the main cooling circuit can be monitored emphatically, and the subtle changes in the state of the liquid cooling system can be tracked in real time to avoid the threat to vehicle safety caused by the slow leakage of coolant due to slight damage.

[0104] Combined with the above embodiments, in an implementation manner, the present application further provides a control method for a headlight liquid cooling system. The controller determines the collision state of the vehicle according to the acceleration change amount of the headlight, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlight cooling circuit, and specifically includes the following content:

[0105] First, the controller performs weighted summation on the received acceleration change amount of the headlight, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlight cooling circuit to calculate a collision result value;

[0106] In the embodiments of the present application, after the controller receives the acceleration change amount of the headlamp, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlamp cooling circuit, it is necessary to perform a weighted sum of several change amounts according to the algorithm for calculating the collision state, and use the result as the collision result value of this collision. Generally speaking, when the change amount of acceleration is in a relatively low range, and there are no obvious changes in the pressure values in the main cooling circuit and the headlamp cooling circuit, it means that the collision degree is relatively low and the risk of possible leakage is relatively low; on the contrary, when the acceleration value increases significantly and the pressures in the main cooling circuit and the headlamp cooling circuit drop sharply, it means that the collision degree is relatively high and the risk of possible leakage is relatively high. Among them, if there is a leakage in the headlamp cooling circuit, the change amount of the pressure value in the headlamp cooling circuit should be the most obvious. Therefore, when performing weighted calculation, the weight of the change amount of the pressure value in the headlamp cooling circuit is larger than the other two items. However, due to the errors of the sensors and various possible influences in the actual situation, it is not possible to make a judgment only based on one measurement value, otherwise misjudgment may occur. Therefore, by performing a weighted sum of the acceleration change amount of the headlamp, the pressure value change amount in the main cooling circuit, and the pressure value change amount in the headlamp cooling circuit, the collision state of the vehicle can be judged more accurately.

[0107] Then, when the collision result value is greater than the collision threshold, the controller determines that the vehicle is in the first collision state.

[0108] In the embodiments of the present application, after calculating the collision result value, it is also necessary to compare the collision result value with the collision threshold to judge the collision state of the vehicle. When the collision result value is greater than the collision threshold, it is judged that a collision of the vehicle may cause a leakage in the headlamp cooling circuit, and the vehicle is in the first collision state, that is, a state with a relatively high leakage risk.

[0109] Specifically, the algorithm for calculating the collision state needs to be established based on a large amount of experimental data and the results of simulation analysis, and the possible noise interference components in the data are removed to ensure the accuracy and reliability of the data; at the same time, the collision threshold for determining the collision state also requires the support of a large amount of experimental data, and calibration and verification are carried out for the actual situations of different vehicles to avoid false alarms due to too high sensitivity of the sensors, resulting in the closure of the first passage for inputting coolant into the headlamp cooling circuit under normal working conditions, and the situation of overheating of the headlamp.

[0110] Based on the same inventive concept, in the third aspect of the embodiments of the present application, a vehicle is provided, which includes the headlamp liquid cooling system as described in the first aspect of the present application, and / or executes the headlamp liquid cooling system control method as described in the second aspect of the present application.

[0111] Based on the same inventive concept, in the fourth aspect of the embodiments of the present application, an electronic device is provided, as Figure 3 shown. Figure 3 FIG. Figure 3 is a schematic diagram of an electronic device shown in an embodiment of the present application. The electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the computer program to implement the headlamp liquid cooling system control method as described in the second aspect of the present application.

[0112] Based on the same inventive concept, in the fifth aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program / instructions are stored. When the computer program / instructions are executed by a processor, the headlamp liquid cooling system control method as described in the second aspect of the present application is implemented.

[0113] In each embodiment of this specification, the key points described are the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0114] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0115] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0116] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1The functions specified in one or more boxes.

[0117] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable terminal device provide for implementing the steps of the functions specified in one Figure 1 process or multiple processes and / or boxes Figure 1 or more boxes.

[0118] Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0119] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0120] The above provides a detailed introduction to a headlight liquid cooling system, a control method and a vehicle. Specific examples are used in this article to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A headlamp liquid cooling system, characterized in that, Comprising: A main cooling circuit for cooling the devices of the vehicle body by means of a coolant. Wherein, a first communication structure is provided in the main cooling circuit, and the main cooling circuit inputs the coolant into the headlamp cooling circuit through a first passage of the first communication structure; A headlamp cooling circuit for cooling the headlamps of the vehicle by receiving the coolant input from the main cooling circuit; A controller for determining the collision state of the vehicle based on the driving parameters of the vehicle, and controlling the first communication structure to close the first passage when the vehicle is in a first collision state.

2. The headlamp liquid cooling system according to claim 1, wherein, The main cooling circuit further includes a second communication structure, and the headlamp cooling circuit is configured to input the coolant into the main cooling circuit through the second communication structure; The headlamp cooling circuit includes a check valve, and the check valve is arranged on the fluid passage between the headlamp and the second communication structure, including a first end away from the second communication structure and a second end close to the second communication structure; The check valve is configured to remain open when the coolant in the headlamp cooling circuit flows from the first end to the second end, and to remain closed when the coolant in the headlamp cooling circuit flows from the second end to the first end.

3. The headlamp liquid cooling system according to claim 2, characterized in that, Comprising: On the fluid passage between the headlamp and the second communication structure, the check valve is arranged close to the second communication structure.

4. The headlamp liquid cooling system according to claim 1, characterized in that The headlamp liquid cooling system includes an acceleration sensor, a first pressure sensor and a second pressure sensor; The acceleration sensor is used to measure the acceleration change of the headlamp; The first pressure sensor is used to measure the change in the pressure value in the main cooling circuit; The second pressure sensor is used to measure the change in the pressure value in the headlamp cooling circuit; The controller is used to determine the collision state of the vehicle based on the driving parameters of the vehicle, including: The controller is used to receive the acceleration change of the headlamp, the change in the pressure value in the main cooling circuit and the change in the pressure value in the headlamp cooling circuit, and determine the collision state.

5. The headlamp liquid cooling system according to claim 1, characterized in that, The headlamp liquid cooling system includes a coolant storage unit; The coolant storage unit is communicated with the main cooling circuit for storing coolant and inputting the coolant into the main cooling circuit; A liquid level sensor is arranged in the coolant storage unit, and the liquid level sensor is used to measure the coolant storage in the coolant storage unit. When in the first collision state, the controller obtains the measurement result of the liquid level sensor measuring the coolant storage in the coolant storage unit.

6. A control method for a headlamp liquid cooling system, characterized in that, Applied to the headlamp liquid cooling system according to any one of claims 1-5, the method includes: The controller obtains the driving parameters of the vehicle; The controller determines the collision state of the vehicle based on the driving parameters of the vehicle; When the controller determines that the vehicle is in the first collision state, the controller generates a first signal and sends it to the first communication structure; The first communication structure responds to the first signal and closes the first passage of the first communication structure.

7. The control method of the headlamp liquid cooling system according to claim 6, characterized in that When the controller determines that the vehicle is in the first collision state, the method includes: The controller obtains the measurement result of the coolant level sensor for measuring the coolant storage in the coolant storage unit, and issues an alarm signal when the coolant storage is insufficient to meet the circulating requirements of the main cooling circuit.

8. The control method of the headlamp liquid cooling system according to claim 6, characterized in that, The controller determines the collision state of the vehicle based on the driving parameters of the vehicle, and the method includes: The controller obtains the acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit; The controller determines the collision state of the vehicle according to the acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit.

9. The control method of the headlamp liquid cooling system according to claim 8, wherein The controller determines the collision state of the vehicle according to the acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit, and the method includes: The controller performs a weighted sum of the received acceleration change of the headlamp, the pressure value change in the main cooling circuit, and the pressure value change in the headlamp cooling circuit to calculate a collision result value; The controller determines that the vehicle is in the first collision state when the collision result value is greater than the collision threshold.

10. A vehicle, characterized in that, The vehicle includes the headlamp liquid cooling system as described in claims 1-5, and / or executes the headlamp liquid cooling system control method as described in any one of claims 6-9.

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