Hybrid vehicle thermal management system cooling circuit filling method and diagnostic instrument

Abstract

The application is suitable for the field of vehicle control technology, and particularly relates to a method for filling a cooling circuit of a hybrid vehicle thermal management system and a diagnostic instrument. After being communicatively connected with a hybrid vehicle to be filled, the method obtains a target filling mode selected from all filling modes corresponding to the hybrid vehicle, fills cooling liquid through a cooling liquid filling port when a cycle of a target circuit corresponding to the target filling mode is in a conduction state, controls a cycle element in the target circuit to enable cooling liquid circulation after the cooling liquid is filled to an upper limit of the cooling liquid filling port, and repeats the filling until a condition is met if the cooling liquid does not reach the upper limit of the cooling liquid filling port and the filling amount of the cooling liquid does not reach a preset capacity after the circulation. The cycle element of a corresponding circuit in the hybrid vehicle is controlled without the aid of other equipment, and the filling is performed by the cooling liquid surface of the cooling liquid filling port and the filling amount, which can effectively ensure that the filling of the cooling liquid of the cooling system of the hybrid vehicle is more complete.

Description

TECHNICAL FIELD

[0001] The present application is suitable for the field of vehicle control technology, and particularly relates to a method for filling a cooling circuit of a thermal management system of a hybrid vehicle and a diagnostic instrument. BACKGROUND

[0002] Generally, a device for cooling some components is provided in a vehicle, for example, a cooling circuit is provided for a vehicle engine to prevent the engine from overheating, wherein cooling liquid circulates in the cooling circuit to achieve heat transfer and transfer. However, the performance of the cooling liquid decreases after long-term use, and therefore, the cooling liquid needs to be replaced to ensure the performance of the cooling liquid. When the cooling liquid of a traditional vehicle is replaced, the method of stepping on the accelerator to start the water pump in the circuit for filling is generally used without vacuumizing, which causes certain fuel consumption and exhaust pollution when filling indoors. In addition, for a new energy hybrid vehicle, the cooling circuit is more complex, and generally includes a battery circuit, an electric drive circuit, a heating circuit and the like, and each circuit needs to be filled separately when the cooling liquid is filled. Without the help of a vacuum filling system, the filling of the cooling liquid may not be complete, thereby causing the cooling performance of the vehicle to decrease.

[0003] Therefore, how to improve the filling process of the cooling liquid to ensure that the filling of the cooling liquid of the cooling system of the hybrid vehicle is more complete becomes a problem to be solved. SUMMARY

[0004] Therefore, the embodiments of the present application provide a method for filling a cooling circuit of a thermal management system of a hybrid vehicle and a diagnostic instrument to solve the problem of how to improve the filling process of the cooling liquid to ensure that the filling of the cooling liquid of the cooling system of the hybrid vehicle is more complete.

[0005] In a first aspect, the embodiments of the present application provide a method for filling a cooling circuit of a thermal management system of a hybrid vehicle, comprising:

[0006] After being communicatively connected with a hybrid vehicle to be filled, a target filling mode selected by all filling modes corresponding to the hybrid vehicle is obtained, and each circuit of a thermal management system of the hybrid vehicle corresponds to one filling mode;

[0007] When a cycle of a target circuit corresponding to the target filling mode is in a conduction state, cooling liquid is filled through a cooling liquid filling port, and after the cooling liquid is filled to an upper limit of the cooling liquid filling port, a cycle element in the target circuit is controlled to enable the cooling liquid in the target circuit to circulate.

[0008] If it is detected after the circulation that the coolant does not reach the upper limit of the coolant filler neck and the filling amount of the coolant does not reach the preset capacity, the filling of the coolant through the coolant filler neck is performed until it is detected after the circulation that the coolant reaches the upper limit of the coolant filler neck and the filling amount of the coolant reaches the preset capacity.

[0009] Optionally, the target loop is an electric drive loop, and the circulating element in the electric drive loop is a first electric drive water pump. The control on the circulating element in the target loop to enable the coolant in the target loop to circulate includes:

[0010] controlling the first electric drive water pump to operate at a first preset rotating speed for a first preset time length;

[0011] controlling the first electric drive water pump to operate at a second preset rotating speed for a second preset time length, wherein the first preset rotating speed is less than the second preset rotating speed.

[0012] Optionally, the first preset rotating speed is 50% of the rated rotating speed of the first electric drive water pump, the second preset rotating speed is 80% of the rated rotating speed of the first electric drive water pump, and the first preset time length and the second preset time length are both 300 seconds.

[0013] Optionally, the target loop is a battery loop, and the circulating element in the battery loop is a second electric drive water pump. The control on the circulating element in the target loop to enable the coolant in the target loop to circulate includes:

[0014] controlling the second electric drive water pump to operate at a third preset rotating speed for a third preset time length;

[0015] controlling the second electric drive water pump to operate at a fourth preset rotating speed for a fourth preset time length, wherein the third preset rotating speed is less than the fourth preset rotating speed.

[0016] Optionally, the third preset rotating speed is 50% of the rated rotating speed of the second electric drive water pump, the fourth preset rotating speed is 80% of the rated rotating speed of the second electric drive water pump, and the third preset time length and the fourth preset time length are both 300 seconds.

[0017] Optionally, the target loop is a heating loop, and the circulating element in the heating loop is a third electric drive water pump. The control on the circulating element in the target loop to enable the coolant in the target loop to circulate includes:

[0018] controlling the third electric drive water pump to operate at a fifth preset rotating speed for a fifth preset time length, and continuously filling the coolant in the fifth preset time length.

[0019] Optionally, the heating circuit is provided with a warm air proportioning three-way valve and a waste gas recirculation post three-way valve, and before the cooling liquid is added through the cooling liquid filling port, the method further comprises:

[0020] controlling the warm air proportioning three-way valve to open to a first opening degree and controlling the waste gas recirculation post three-way valve to open to a second opening degree, so that the circulation of the heating circuit is in a conduction state;

[0021] before the cooling liquid is added through the cooling liquid filling port, the method further comprises:

[0022] continuously controlling the opening degree of the warm air proportioning three-way valve to be the first opening degree and the opening degree of the waste gas recirculation post three-way valve to be the second opening degree.

[0023] Optionally, the fifth preset rotation speed is 50% of the rated rotation speed of the third electric drive water pump, and the fifth preset time length is 600 seconds.

[0024] Optionally, before the circulation element in the target circuit is controlled to enable the cooling liquid in the target circuit to circulate, the method further comprises:

[0025] waiting for a sixth preset time.

[0026] In a second aspect, an embodiment of the present application provides a diagnostic instrument, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, and the processor implements the cooling circuit filling method of the thermal management system of the hybrid vehicle in the first aspect when executing the computer program.

[0027] Compared with the prior art, the embodiment of the present application has the beneficial effects that: after the present application is communicatively connected with the hybrid vehicle to be filled, a target filling mode selected from all filling modes corresponding to the hybrid vehicle is obtained, each circuit in the thermal management system cooling circuit of the hybrid vehicle corresponds to one filling mode, and when the circulation of the target circuit corresponding to the target filling mode is in a conduction state, cooling liquid is added through a cooling liquid filling port, and after the cooling liquid added to the cooling liquid filling port reaches an upper limit, the circulation element in the target circuit is controlled to enable the cooling liquid in the target circuit to circulate. If it is detected that the cooling liquid does not reach the upper limit of the cooling liquid filling port and the filling amount of the cooling liquid does not reach a preset capacity after circulation, the method returns to adding cooling liquid through the cooling liquid filling port until it is detected that the cooling liquid reaches the upper limit of the cooling liquid filling port and the filling amount of the cooling liquid reaches the preset capacity after circulation, and the circulation element in the corresponding circuit of the hybrid vehicle is controlled, without the aid of other equipment, and the filling is performed by the cooling liquid surface and the filling amount of the cooling liquid filling port, which can effectively ensure that the cooling liquid filling of the cooling system of the hybrid vehicle is more complete. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0029] Figure 1 is a structure schematic diagram of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application;

[0030] Figure 2 is a flow schematic diagram of a charging method of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application;

[0031] Figure 3 is a flow schematic diagram of a charging method of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application;

[0032] Figure 4 is a flow schematic diagram of a charging method of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application;

[0033] Figure 5 is a flow schematic diagram of a charging method of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application;

[0034] Figure 6 is a structure schematic diagram of a diagnostic instrument provided by an embodiment of the present application;

[0035] Among them, 1, electric drive circuit, 2, battery circuit, 3, heating circuit, 4, warm air proportional three-way valve, 5, exhaust gas recirculation three-way valve. DETAILED DESCRIPTION

[0036] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as specific system structures, techniques, in order to thoroughly understand the embodiments of the present application. However, those skilled in the art should understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted, so as not to obscure the description of the present application with unnecessary details.

[0037] It should be understood that when used in the specification and the appended claims of the present application, the term "comprising" indicates the presence of the described features, whole, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0038] In addition, in the description of the present application and the appended claims, the terms "first", "second", "third", etc. are used only to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0039] Reference to "one embodiment" or "some embodiments" or "one implementation" or "some implementations" etc. in the present application description means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in other some embodiments", "in yet some embodiments" etc. appearing in various places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically stated. The terms "comprise", "include", "have" and their conjugates mean "including but not limited to", unless otherwise specifically stated.

[0040] It should be understood that the size of the serial number of each step in the following embodiments does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0041] In order to illustrate the technical solutions of the present application, the following will be described by specific embodiments.

[0042] Referring to Figure 1 , it is a structure schematic diagram of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application. The cooling circuit of the hybrid vehicle thermal management system includes an electric drive circuit 1, a battery circuit 2 and a heating circuit 3, wherein the electric drive circuit 1 is a circuit for thermal management of battery packs and battery charge and discharge controllers, the battery circuit 2 is a circuit for thermal management of drive motors and their control devices, and the heating circuit 3 has a function of adjusting the temperature of the cooling liquid in the circuit during heating. The electric drive circuit 1, the battery circuit 2 and the heating circuit 3 exchange heat through a three-in and three-out heat exchanger, thereby realizing thermal management.

[0043] It should be known that filling is to add liquid circulating in the circuit, which generally occurs in the trial production and after-sales replacement process of the vehicle. The method formed by the corresponding process is applied to the diagnosis instrument for the vehicle after the sale. When the diagnosis instrument is connected to the vehicle, the existing equipment in the above-mentioned circuit in the vehicle is controlled to run to realize the filling process.

[0044] Referring to Figure 2 , it is a flowchart of a filling method of a cooling circuit of a hybrid vehicle thermal management system provided by an embodiment of the present application, as Figure 2 shown, the filling method of the cooling circuit of the hybrid vehicle thermal management system includes the following steps:

[0045] Step S201, after being connected with the hybrid vehicle to be filled, the target filling mode selected from all filling modes of the hybrid vehicle is obtained.

[0046] The hybrid vehicle to be filled is connected with the diagnostic instrument, and the CAN bus of the vehicle can be connected with the diagnostic instrument to realize the transmission and reception control of the data signal.

[0047] The thermal management cooling circuit of the hybrid vehicle includes the above-mentioned battery circuit, electric drive circuit and heating circuit, and each circuit needs to match the corresponding injection process to realize the coolant injection for the circuit. For each injection process, the filling mode is set correspondingly, wherein each circuit in the thermal management system cooling circuit of the hybrid vehicle corresponds to one filling mode.

[0048] All filling modes of the hybrid vehicle are displayed in the diagnostic instrument, and the user selects the corresponding filling mode in the diagnostic instrument to obtain the selected target filling mode.

[0049] Step S202, when the cycle of the target circuit corresponding to the target filling mode is in the on state, the coolant is filled through the coolant filling port, and after the upper limit of the coolant filling port is reached, the cycle element in the target circuit is controlled to enable the coolant in the target circuit to circulate.

[0050] The on state indicates that the corresponding circuit is in an on state, that is, after the coolant is filled, the coolant can circulate in the circuit. For example, for the case where a valve exists in the circuit, the valve needs to be controlled to open before the subsequent process of filling the coolant is performed. Specifically, the opening degree of the valve can be set according to the requirements.

[0051] When it is determined that the cycle of the target circuit corresponding to the target filling mode selected by the user is in the on state, the coolant is filled at the coolant filling port. The upper limit is set at the coolant filling port, and when the upper limit is exceeded, the filled coolant will flow out, which cannot achieve the filling effect and will cause waste of the coolant. The filling of the coolant at the coolant filling port can be manual filling or automatic filling realized by artificial intelligence.

[0052] After each filling to the upper limit, temporarily stop filling, and control the circulating element in the target circuit, wherein the circulating element is used to drive the coolant in the circuit to flow, and form a circulation in the circuit. At this time, the coolant is filled to the upper limit of the coolant filling port, and the circulating element is controlled to enable the coolant in the circuit to flow, so that the injected coolant can be quickly circulated in the circuit without filling the coolant in the circuit, thereby reducing the liquid level of the coolant in the coolant filling port, so that the coolant can continue to be filled in the coolant filling port.

[0053] The control of the circulating element can include controlling the circulating capacity, circulating time, circulating purpose, etc. of the circulating element, that is, performing the corresponding control process under the pre-set control parameters, and the end of one control represents the end of this circulation.

[0054] Step S203, if the coolant does not reach the upper limit of the coolant filling port after circulation, and the filling amount of the coolant does not reach the pre-set capacity, return to execute the filling of the coolant through the coolant filling port until the coolant reaches the upper limit of the coolant filling port after circulation and the filling amount of the coolant reaches the pre-set capacity.

[0055] Wherein, after the end of the above-mentioned circulation, whether the coolant reaches the upper limit of the coolant filling port, and whether the filling amount of the coolant for the target circuit reaches the pre-set capacity are detected. If the coolant reaches the upper limit of the coolant filling port, the filling cannot continue. If the pre-set capacity is the total capacity of the entire target circuit, it means that there is no space in the target circuit to accommodate more coolant, so the filling cannot continue. The above-mentioned two judgment conditions are judged as a whole, which can more accurately limit the situation that the filling cannot continue, so as to avoid waste of coolant.

[0056] If the above-mentioned two judgment conditions cannot be met, the filling and circulation steps need to be returned to ensure that the volume of the coolant in the target circuit reaches the target. After the last circulation, if the liquid level of the coolant in the coolant filling port reaches the upper limit, the entry of air can be reduced to ensure the cooling effect of the target circuit.

[0057] Whether the coolant reaches the upper limit of the coolant filling port can be judged by manual judgment, or by machine vision and sensor sensing. In an embodiment, the pre-set capacity can also be 0.8 times the total capacity of the corresponding target circuit, which can effectively prevent the situation that the coolant pressure in the target circuit is too high.

[0058] Optionally, before controlling the circulating element in the target circuit to enable the coolant in the target circuit to circulate, the method further comprises:

[0059] Wait for the sixth preset time.

[0060] Wherein, after each filling reaches the upper limit, a certain time needs to be waited for each time the coolant is filled through the coolant filling port, thereby helping the coolant to flow into the target circuit autonomously, helping the subsequent continuous filling and circulation to be performed, and the optional sixth preset time is 10 seconds.

[0061] After the embodiment of the application is in communication connection with the hybrid vehicle to be filled, the target filling mode selected from all filling modes of the hybrid vehicle is obtained, each circuit in the thermal management system cooling circuit of the hybrid vehicle corresponds to one filling mode, and when the circulation of the target circuit corresponding to the target filling mode is in the on state, the coolant is filled through the coolant filling port. After the coolant is filled to the upper limit of the coolant filling port, the circulation element in the target circuit is controlled to enable the coolant in the target circuit to circulate. If it is detected that the coolant does not reach the upper limit of the coolant filling port after circulation, and the filling amount of the coolant does not reach the preset capacity, the coolant is filled through the coolant filling port is returned to be executed until it is detected that the coolant reaches the upper limit of the coolant filling port and the filling amount of the coolant reaches the preset capacity after circulation. The circulation element in the corresponding circuit in the hybrid vehicle is controlled without the aid of other equipment, and the coolant filling port is filled with the coolant surface and the filling amount of the coolant. The circulation is executed to fill, which can effectively ensure that the coolant filling of the cooling system of the hybrid vehicle is more complete.

[0062] Referring to Figure 3 is a flowchart of a hybrid vehicle thermal management system cooling circuit filling method provided by the third embodiment of the application. The target circuit is the electric drive circuit 2, and the circulation element in the electric drive circuit 2 is the first electric drive water pump. The control of the circulation element in the target circuit in step S202 to enable the coolant in the target circuit to circulate includes:

[0063] Step S301: Control the first electric drive water pump to operate at a first preset speed for a first preset time length.

[0064] Wherein, in the electric drive circuit 1 shown in Figure 1 , a first electric drive water pump is arranged to drive the coolant in the electric drive circuit 1 to move when the first electric drive water pump is operating. The first electric drive water pump operates at a first preset speed and operates for a first preset time length, realizing the circulation of the coolant in the electric drive circuit 1. In the case that the coolant in the electric drive circuit 1 is not full, the liquid level of the coolant discharged from the coolant filling port is lowered, so that more coolant can be filled in the coolant filling port.

[0065] Step S302: Control the first electric drive water pump to operate at a second preset speed for a second preset time length.

[0066] The first preset rotating speed is less than the second preset rotating speed. Similarly, referring to the description of step S301, the first electric drive water pump is controlled to operate at a higher rotating speed again, so that the cooling liquid circulates quickly, the pressure in the entire electric drive circuit 1 is increased, and the filling efficiency of the cooling liquid is improved.

[0067] Optionally, the first preset rotating speed is 50% of the rated rotating speed of the first electric drive water pump, the second preset rotating speed is 80% of the rated rotating speed of the first electric drive water pump, and the first preset time length and the second preset time length are both 300 seconds.

[0068] The first preset rotating speed is 50% of the rated rotating speed of the first electric drive water pump, the second preset rotating speed is 80% of the rated rotating speed of the first electric drive water pump, and the first preset time length and the second preset time length are both 300 seconds.

[0069] The embodiment of the present application controls the first electric drive water pump in two steps and stages, so that the cooling liquid can be efficiently circulated and filled, and the filling amount of the cooling liquid in the electric drive circuit can be improved, and the filling of the cooling liquid in the circuit is ensured.

[0070] Referring to Figure 4 is a flowchart of a cooling circuit filling method of a hybrid vehicle thermal management system provided by the fourth embodiment of the present application. The target circuit is the battery circuit 2, and the circulating element in the battery circuit 2 is the second electric drive water pump. In step S202, the circulating element in the target circuit is controlled to circulate the cooling liquid in the target circuit, including:

[0071] Step S401, control the second electric drive water pump to operate at a third preset rotating speed for a third preset time length.

[0072] In the battery circuit 2 shown in Figure 1 , a second electric drive water pump is arranged in the battery circuit 2 to drive the cooling liquid in the battery circuit 2 to move when the second electric drive water pump operates. The second electric drive water pump operates at a third preset rotating speed and operates for a third preset time length to circulate the cooling liquid in the battery circuit 2. When the cooling liquid in the battery circuit 2 is not full, the liquid level of the cooling liquid at the cooling liquid filling port is lowered, so that more cooling liquid can be filled at the cooling liquid filling port.

[0073] Step S402, control the second electric drive water pump to operate at a fourth preset rotating speed for a fourth preset time length.

[0074] The third preset rotating speed is less than the fourth preset rotating speed. Similarly, referring to the description of step S401, the second electrically driven water pump is controlled to operate at a higher rotating speed again, so that the cooling liquid is circulated quickly, the pressure in the entire battery loop 2 is increased, and the filling efficiency of the cooling liquid is improved.

[0075] Optionally, the third preset rotating speed is 50% of the rated rotating speed of the second electrically driven water pump, the fourth preset rotating speed is 80% of the rated rotating speed of the second electrically driven water pump, and the third preset time length and the fourth preset time length are both 300 seconds.

[0076] The second electrically driven water pump is operated at 50% of the rated rotating speed, which can effectively lower the liquid level of the cooling liquid at the cooling liquid filling port, and prevent the cooling liquid at the cooling liquid filling port from being pressed out by the air pressure in the battery loop 2 due to too fast operation, thereby avoiding waste of the cooling liquid. The second electrically driven water pump is operated at 80% of the rated rotating speed, which improves the circulation efficiency of the cooling liquid.

[0077] The second electrically driven water pump is controlled by two steps and stages in the embodiments of the present application, so that the cooling liquid can be efficiently circulated and filled, and the filling amount of the cooling liquid in the battery electrically driven loop is ensured, thereby ensuring complete filling of the cooling liquid in the loop.

[0078] As shown in Figure 5 FIG. 5, the embodiment five of the present application provides a flowchart of a cooling loop filling method of a hybrid vehicle thermal management system. The target loop is a heating loop 3, and the circulating element in the heating loop 3 is a third electrically driven water pump. The circulating element in the target loop is controlled in step S202 to enable the cooling liquid in the target loop to circulate, and the method comprises the following steps.

[0079] In step S501, the third electrically driven water pump is controlled to operate at a fifth preset rotating speed for a fifth preset time length.

[0080] As shown in Figure 1 , the third electrically driven water pump is arranged in the heating loop 3 to drive the cooling liquid in the heating loop 3 to move when the third electrically driven water pump operates. The third electrically driven water pump operates at a second preset rotating speed and operates for a fifth preset time length when the third electrically driven water pump operates, thereby achieving circulation of the cooling liquid in the heating loop 3. In the case that the cooling liquid in the heating loop 3 is not full, the liquid level of the cooling liquid at the cooling liquid filling port is lowered, so that more cooling liquid can be filled at the cooling liquid filling port.

[0081] In step S502, the cooling liquid is continuously filled for the fifth preset time length.

[0082] The heating loop 3 is continuously filled with the cooling liquid, without waiting for each cycle to be completed before filling the cooling liquid.

[0083] Optionally, the heating circuit is provided with a warm air proportioning three-way valve 4 and an exhaust gas recirculation post three-way valve 5, and before the cooling liquid is added through the cooling liquid filling port, the method further comprises:

[0084] controlling the warm air proportioning three-way valve 4 to open to a first opening degree, and controlling the exhaust gas recirculation post three-way valve 5 to open to a second opening degree, so that the circulation of the heating circuit is in a conducting state;

[0085] before the cooling liquid is added through the cooling liquid filling port, the method further comprises:

[0086] continuously controlling the opening degree of the warm air proportioning three-way valve 4 to be the first opening degree, and the opening degree of the exhaust gas recirculation post three-way valve 5 to be the second opening degree.

[0087] Optionally, the fifth preset rotation speed is 50% of the rated rotation speed of the third electric drive water pump, and the fifth preset time length is 600 seconds.

[0088] Optionally, the fifth preset rotation speed is 50% of the rated rotation speed of the third electric drive water pump, and the fifth preset time length is 600 seconds.

[0089] Optionally, the fifth preset rotation speed is 50% of the rated rotation speed of the third electric drive water pump, and the fifth preset time length is 600 seconds.

[0090] As shown in Figure 6 FIG. 6 is a structural schematic diagram of a diagnostic instrument according to an embodiment of the present application. The diagnostic instrument includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for filling a cooling circuit of a thermal management system of a hybrid vehicle as described in the above embodiments is implemented.

[0091] Those skilled in the art can understand that Figure 6 The diagnostic instrument is only an example and does not limit the computer device. The computer device can include more or fewer components than those shown, or combine certain components, or include different components.

[0092] The processor can be a CPU, and can also be other general-purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0093] The memory includes a readable storage medium, an internal memory, etc., where the internal memory can be a memory of the computer device, and the internal memory provides an environment for running the operating system and the computer-readable instructions in the readable storage medium. The readable storage medium can be a hard disk of the computer device, and in other embodiments, can also be an external storage device of the computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory can include both the internal storage unit of the computer device and the external storage device. The memory is used to store the operating system, application programs, a BootLoader, data, and other programs, such as program codes of computer programs, etc. The memory can also be used to temporarily store data that has been output or will be output.

[0094] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0095] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0096] In the embodiments provided by the present application, it should be understood that the disclosed apparatus / control device and method can be implemented in other manners. For example, the embodiments of the apparatus / control device described above are merely illustrative. For example, the division of the modules or units can be different, and each can contain a plurality of sub-units. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between the units can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or in other forms.

[0097] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e. may be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0098] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method of refilling a cooling circuit of a thermal management system of a hybrid vehicle, characterized in that, The method comprises the following steps: After being connected with the hybrid vehicle to be filled, a target filling mode selected from all filling modes corresponding to the hybrid vehicle is obtained, and each cooling loop of the thermal management system of the hybrid vehicle corresponds to one filling mode; When the cycle of the target loop corresponding to the target filling mode is in the on state, the cooling liquid is filled through the cooling liquid filling port, and after the upper limit of the cooling liquid filling to the cooling liquid filling port is reached, the circulating elements in the target loop are controlled to enable the circulation of the cooling liquid in the target loop; If the cooling liquid does not reach the upper limit of the cooling liquid filling port after circulation, and the filling amount of the cooling liquid does not reach the preset capacity, the filling of the cooling liquid through the cooling liquid filling port is returned to be executed until the cooling liquid reaches the upper limit of the cooling liquid filling port and the filling amount of the cooling liquid reaches the preset capacity after circulation; If the target loop is a heating loop, the circulating element in the heating loop is a third electric drive water pump, and the control of the circulating element in the target loop to enable the circulation of the cooling liquid in the target loop comprises: Controlling the third electric drive water pump to operate at a fifth preset speed for a fifth preset time, and continuously filling the cooling liquid within the fifth preset time; The heating loop is provided with a warm air proportioning three-way valve and an exhaust gas recirculation three-way valve, and before the cooling liquid is filled through the cooling liquid filling port, the method further comprises: Controlling the warm air proportioning three-way valve to open to a first opening degree, and controlling the exhaust gas recirculation three-way valve to open to a second opening degree, so that the cycle of the heating loop is in the on state; Before the cooling liquid is filled through the cooling liquid filling port, the method further comprises: Continuously controlling the opening degree of the warm air proportioning three-way valve to be the first opening degree, and the opening degree of the exhaust gas recirculation three-way valve to be the second opening degree.

2. The hybrid vehicle thermal management system cooling circuit filling method of claim 1, wherein, The target loop is an electric drive loop, the circulating element in the electric drive loop is a first electric drive water pump, and the control of the circulating element in the target loop to enable the circulation of the cooling liquid in the target loop comprises: Controlling the first electric drive water pump to operate at a first preset speed for a first preset time; Controlling the first electric drive water pump to operate at a second preset speed for a second preset time, wherein the first preset speed is less than the second preset speed.

3. The method of claim 2, wherein the method further comprises: The first preset speed is 50% of the rated speed of the first electric drive water pump, the second preset speed is 80% of the rated speed of the first electric drive water pump, and the first preset time and the second preset time are both 300 seconds.

4. The hybrid vehicle thermal management system cooling circuit filling method of claim 1, wherein, The target loop is a battery loop, the circulating element in the battery loop is a second electric drive water pump, and the control of the circulating element in the target loop to enable the circulation of the cooling liquid in the target loop comprises: Controlling the second electric drive water pump to operate at a third preset speed for a third preset time; Controlling the second electric drive water pump to operate at a fourth preset speed for a fourth preset time, wherein the third preset speed is less than the fourth preset speed.

5. The hybrid vehicle thermal management system cooling circuit refilling method of claim 4, wherein, The third preset rotating speed is 50% of the rated rotating speed of the second electrically-driven water pump, the fourth preset rotating speed is 80% of the rated rotating speed of the second electrically-driven water pump, and the third preset time length and the fourth preset time length are both 300 seconds.

6. The hybrid vehicle thermal management system cooling circuit filling method of claim 1, wherein, The fifth preset rotating speed is 50% of the rated rotating speed of the third electrically-driven water pump, and the fifth preset time length is 600 seconds.

7. The method of claim 1, wherein, Before the control on the circulating element in the target loop is performed to enable the coolant in the target loop to circulate, the method further comprises: waiting for a sixth preset time.

8. A diagnostic instrument, characterized by A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for charging the cooling loop of the thermal management system of the hybrid vehicle according to any one of claims 1 to 7 when executing the computer program.

Images