Filling pipe, urea box, heating control method of urea box, electronic equipment and vehicle

Abstract

The invention provides a filling pipe, a urea box, a heating control method of the urea box, electronic equipment and a vehicle. The filling pipe comprises a pipe body and a heating assembly installed on the pipe body, the heating assembly comprises a metal lining and a metal coil, the metal lining is arranged in the pipe body, and the metal coil is arranged in the pipe body. The outer wall of the metal lining is connected with the inner wall of the pipe body, the outer wall of the pipe body is sleeved with the metal coil, the metal coil and the metal lining are correspondingly arranged, and the metal coil is used for being connected with an external alternating current power supply. Through cooperative use of the metal coil and the metal lining, the heating assembly can heat a urea solution in the filling pipe, the urea solution in the filling pipe is prevented from being frozen, the pipe body of the filling pipe cannot be blocked due to freezing of the urea solution in the pipe body, and it is ensured that the urea solution can be continuously filled into the filling pipe at any time according to needs.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a filling pipe, a urea tank and a heating control method thereof, an electronic device and a vehicle. Background Art

[0002] In order to prevent the urea solution inside the urea tank from freezing, a heating device is usually provided inside the existing urea tank. However, the heating device can only heat the urea solution inside the urea tank, but cannot heat the urea solution in the filling pipe connected to the urea tank. As a result, the urea solution in the urea filling pipe may freeze, making it impossible to continue to add the urea solution. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a filling pipe, a urea tank and a heating control method thereof, an electronic device and a vehicle.

[0004] Based on the above-mentioned purpose, the first aspect of the present application provides a filling pipe with a heating function, comprising: a pipe body and a heating component installed on the pipe body, the heating component comprising a metal lining and a metal coil, the metal lining is built into the pipe body, the outer wall of the metal lining is connected to the inner wall of the pipe body, the metal coil is sleeved on the outer wall of the pipe body and arranged corresponding to the metal lining, and the metal coil is used to be connected to an external AC power supply.

[0005] Optionally, the heating component further comprises a covering layer, wherein the covering layer is sleeved on an outer wall of the metal coil and connected to an outer wall of the tube body, and the metal coil is located within the covering layer.

[0006] Optionally, the tube body includes a straight portion, the metal liner is built into the straight portion of the tube body, and the metal coil is sleeved on an outer wall of the straight portion.

[0007] Optionally, the tube body includes a plurality of straight portions, and the filling pipe includes a plurality of heating components, and the plurality of heating components correspond one-to-one to the plurality of straight portions.

[0008] Optionally, the length of the metal lining accounts for 4 / 5 to 1 of the length of the straight portion, the sleeve length of the metal coil accounts for 1 / 3 to 5 / 6 of the length of the metal lining, the length of the coating layer accounts for 2 / 3 to 1 of the length of the metal lining, and the length direction is the axial direction of the tube body.

[0009] A second aspect of the present application provides a urea tank, comprising: a urea tank body and at least one filling pipe according to any one of the first aspects connected to the urea tank body, wherein a heating device is disposed in the urea tank body.

[0010] A third aspect of the present application provides a heating control method for a urea tank, comprising:

[0011] Obtain the ambient temperature and the urea temperature in the urea tank;

[0012] In response to the ambient temperature and / or urea temperature being less than or equal to a preset start-up heating temperature, a heating device in the urea tank body is started to heat the urea tank body;

[0013] Obtaining a historical urea remaining amount, and determining whether the historical urea remaining amount meets a preset heating condition;

[0014] In response to the historical urea remaining amount meeting the preset heating condition, the heating component of the filling pipe is controlled to perform heating.

[0015] Optionally, judging whether the historical urea remaining amount meets a preset heating condition includes:

[0016] In response to the historical urea remaining amount being greater than or equal to a first maximum urea amount and less than a maximum rated urea amount, the urea consumption amount is continuously acquired; wherein the first maximum urea amount is the maximum urea amount when no urea solution exists in the filling pipe, and the maximum rated urea amount is the total amount of urea when the urea solution in the urea tank body reaches the rated amount of the body and the urea solution in the filling pipe reaches the rated amount of the pipe;

[0017] Based on the urea consumption, determining a current urea remaining amount;

[0018] In response to the current remaining urea amount being less than the first maximum urea amount, it is determined that the historical remaining urea amount meets the preset heating condition.

[0019] Optionally, the determining whether the historical urea remaining amount meets a preset heating condition further includes:

[0020] In response to the historical urea remaining amount being greater than the maximum rated amount of urea, continuously acquiring urea consumption;

[0021] In response to the urea consumption being greater than or equal to the minimum urea consumption, it is determined that the historical urea remaining amount meets the preset heating condition; wherein the minimum urea consumption is a difference between a second maximum urea amount and the first maximum urea amount, the second maximum urea amount is a maximum limit amount of urea that the urea tank can accommodate in the case of over-addition of urea, and the second maximum urea amount is greater than the maximum rated amount of urea.

[0022] A fourth aspect of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a method as described in any one of the third aspects above when executing the program.

[0023] A fifth aspect of the present application provides a vehicle, comprising the filling pipe described in the first aspect, the urea tank described in the second aspect, or the electronic device described in the fourth aspect.

[0024] From the above description, it can be seen that the filling pipe, urea tank and heating control method thereof, electronic device and vehicle provided by the present application, a heating component is arranged on the pipe body of the filling pipe, and the heating component includes a metal lining and a metal coil. The metal coil and the metal lining are used in combination, so that the heating component can heat the urea solution in the filling pipe to prevent the urea solution in the filling pipe from freezing, so that the pipe body of the filling pipe will not be blocked due to the freezing of the internal urea solution, ensuring that the urea solution can continue to be added to the filling pipe at any time as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the filling pipe of an embodiment of the present application;

[0027] Figure 2 It is a schematic cross-sectional view of the filling pipe along the AA plane of an embodiment of the present application;

[0028] Figure 3 This application manual is attached Figure 2 A partial enlarged schematic diagram of B in the middle;

[0029] Figure 4 This is a schematic structural diagram of a urea tank according to an embodiment of the present application including two filling pipes;

[0030] Figure 5 This is a schematic diagram of a first flow chart of a heating control method for a urea tank according to an embodiment of the present application;

[0031] Figure 6 A schematic diagram of an electronic device according to an embodiment of the present application;

[0032] Figure 7 This is a second flow chart of the heating control method of the urea tank according to an embodiment of the present application.

[0033] In the figure, 1, filling pipe; 11, pipe body; 111, straight portion; 112, curved portion; 2, heating component; 21, metal lining; 22, metal coil; 23, coating layer. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] Due to environmental pollution, environmental protection departments in various countries have put forward increasingly stringent requirements on the emission of nitrogen oxide pollutants from diesel vehicles. In order to meet the emission standards, many OEMs have begun to adopt SCR technology (Selective Catalytic Reduction Technology). SCR technology is a technology that targets NO in diesel vehicle exhaust emissions. x A treatment process, that is, under the action of a catalyst, urea is sprayed to remove NO in the exhaust gas. x Reduced to N2 and H20. The chemical reactions that occur in the SCR are as follows:

[0037] Urea hydrolysis: (NH2)2CO+H2O→2NH3+CO2

[0038] NO X Reduction: NO+NO2+2NH3→2N2+3H2O

[0039] NH3 oxidation: 4NH3+3O2→2N2+6H2O

[0040] The SCR system includes: a urea aqueous solution storage tank, a conveying device, a metering device, an injection device, a catalyst, and temperature and exhaust sensors. The urea solution is stored in the urea tank, which is composed of 32.5% high-purity urea and 67.5% deionized water. Since the urea solution will slowly begin to freeze at -11°C, it is impossible to transport the urea solution to the tailpipe, making the SCR system unable to work properly, so the urea tank needs to have a heating function. The commonly used method is to set a heating device in the urea tank, specifically a rubber heating wire heating method and a thermistor heating block heating method. Rubber heating wire heating is to distribute the rubber containing the heating wire to the bottom of the urea tank and power it with a pump for heating. The thermistor heating block heating method is to integrate the thermistor on the urea pump and power the urea solution with the urea pump for heating.

[0041] However, both of these methods have a common disadvantage, that is, the heating device can only heat the urea solution inside the urea tank, but cannot heat the urea solution in the liquid filling pipe connected to the urea tank.

[0042] At present, urea filling machines are not widely used in my country, and urea filling is mostly done manually. In this case, there is a common situation of overfilling (i.e., the filling volume is greater than the rated volume of the urea system). In this case, some urea solution usually accumulates in the urea filling pipe. When the ambient temperature is low, the urea solution in the urea filling pipe will freeze together with the urea solution in the urea tank. Since the urea filling pipe is far away from the urea heating device and the filling pipe itself does not have a heating function, the urea solution in the urea filling pipe will freeze, making it impossible to continue filling urea.

[0043] Based on this, the present application provides a filling pipe, a urea tank and a heating control method thereof, an electronic device and a vehicle. A heating component is arranged on the pipe body of the filling pipe, and the urea solution in the filling pipe can be heated by the heating component to prevent the urea solution in the filling pipe from freezing.

[0044] The present application is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] See also Figure 1 , Figure 2 and Figure 3 The present application provides a filling pipe 1 with a heating function, comprising: a pipe body 11 and a heating component 2 installed on the pipe body 11, the heating component 2 comprising a metal lining 21 and a metal coil 22, the metal lining 21 is built into the pipe body 11, the outer wall of the metal lining 21 is connected to the inner wall of the pipe body 11, the metal coil 22 is sleeved on the outer wall of the pipe body 11 and is arranged corresponding to the metal lining 21, and the metal coil 22 is used to be connected to an external AC power supply.

[0046] Specifically, the metal lining 21 is built into the tube body 11 and the outer wall of the metal lining 21 is connected to the inner wall of the tube body 11, the metal coil 22 is sleeved on the outer wall of the tube body 11 and connected to the outer wall of the tube body 11, and the side wall of the tube body 11 is located between the metal coil 22 and the metal lining 21.

[0047] The location, quantity and size of the metal lining 21 and the metal coil 22 are set according to actual experience and are not specifically limited here.

[0048] The metal coil 22 is disposed correspondingly to the metal lining 21, that is, the location of the metal coil 22 is the same as or close to the location of the metal lining 21, so that the metal coil 22 and the metal lining 21 can interact with each other. Exemplarily, the metal coil 22 is disposed at position A of the tube body 11, and the metal lining 21 is disposed correspondingly on the inner wall of position A of the tube body 11.

[0049] The metal coil 22 is used to be connected to an external AC power source. In actual application, when the heating component 2 is needed to heat the liquid in the filling pipe 1 or the frozen liquid, the metal coil 22 is connected to the external AC power source, and the external AC power source passes an alternating current into the metal coil 22. The alternating current causes the metal coil 22 to generate an alternating magnetic field, thereby generating an eddy current in the metal lining 21, thereby heating the metal lining 21. The heated metal lining 21 can heat the liquid in the pipe body 11 or the frozen liquid, thereby realizing the heating function.

[0050] In the present application, a heating assembly 2 is arranged on the tube body 11 of the filling pipe 1, and the heating assembly 2 includes a metal lining 21 and a metal coil 22. The metal coil 22 and the metal lining 21 are used in combination, so that the heating assembly 2 can heat the urea solution in the filling pipe 1 to prevent the urea solution in the filling pipe 1 from freezing, so that the tube body 11 of the filling pipe 1 will not be blocked due to the freezing of the internal urea solution, ensuring that the urea solution can continue to be added to the filling pipe 1 at any time as needed.

[0051] The filling pipe 1 provided in the present application has a simple structure and is easy to implement. The setting of the heating component 2 does not affect the sealing performance of the filling pipe 1. When the liquid in the filling pipe 1 is frozen and blocked, the liquid in the filling pipe 1 can be heated and thawed to prevent the situation where the liquid cannot be filled due to ice blockage.

[0052] In some embodiments, the heating component 2 further includes a coating layer 23 , which is sleeved on the outer wall of the metal coil 22 and connected to the outer wall of the tube body 11 , and the metal coil 22 is located in the coating layer 23 .

[0053] Specifically, the coating layer 23 covers the outer wall and both sides of the metal coil 22, as well as the junction where the metal coil 22 is connected to the tube body 11, to ensure that the coating layer 23 can completely cover the metal coil 22, thereby protecting the metal coil 22 and preventing water from entering, thereby ensuring the safety of the filling pipe 1.

[0054] In some embodiments, see Figure 2 The tube body 11 includes a straight portion 111 , the metal lining 21 is built into the straight portion 111 of the tube body 11 , and the metal coil 22 is sleeved on the outer wall of the straight portion 111 .

[0055] Specifically, the tube body 11 includes a straight portion 111 and a curved portion 112, and at least one straight portion 111 may be provided. Exemplarily, a plurality of straight portions 111 may be provided, and correspondingly, a plurality of heating components 2 may also be provided, and the plurality of heating components 2 correspond to the plurality of straight portions 111 one by one, and a heating component 2 is provided on each straight portion 111. Exemplarily, the straight portion 111 may also be provided with one, and a heating component 2 is provided in the straight portion 111.

[0056] The heating component 2 is arranged on the straight portion 111 , which, on the one hand, facilitates the heating component 2 to achieve a good heating effect, and on the other hand, is beneficial to the actual manufacturing process and saves manufacturing costs.

[0057] At least one curved portion 112 may be provided. For example, one, two or more curved portions 112 may be provided. The number of curved portions 112 and the number of straight portions 111 may be the same or different, which is not limited here.

[0058] It is worth noting that the heating component 2 can also be arranged in the bending portion 112 as needed, which is not limited here.

[0059] In some embodiments, the length of the metal lining 21 accounts for 4 / 5 to 1 of the length of the straight portion 111, the sleeve length of the metal coil 22 accounts for 1 / 3 to 5 / 6 of the length of the metal lining 21, and the length of the coating layer 23 accounts for 2 / 3 to 1 of the length of the metal lining 21, and the length direction is the axial direction of the tube body 11.

[0060] Specifically, when the length of the metal lining 21 accounts for 4 / 5 to 1 of the length of the straight portion 111, the metal lining 21 can cover most of the inner wall of the straight portion 111. In this way, the heated metal lining 21 can heat the liquid in the straight portion 111 more comprehensively, improve the heating effect, and shorten the heating time. When the length of the metal lining 21 is less than 4 / 5 of the length of the straight portion 111, the metal lining 21 covers a smaller area of ​​the inner wall of the straight portion 111, the heating effect is poor, and the heating time is long, which is not conducive to practical application.

[0061] When the sleeve length of the metal coil 22 accounts for 1 / 3 to 5 / 6 of the length of the metal lining 21, the length of the metal coil 22 and the metal lining 21 are well matched, and the alternating current of the metal coil 22 is sufficient to effectively heat the entire metal lining 21, thereby shortening the heating time. When the sleeve length of the metal coil 22 is less than 1 / 3 of the length of the metal lining 21, the area of ​​the metal coil 22 covering the metal lining 21 is small, so that the heating time required for the metal lining 21 is longer; when the sleeve length of the metal coil 22 is greater than 5 / 6 of the length of the metal lining 21, the area of ​​the metal coil 22 covering the metal lining 21 is large, and although the entire metal lining 21 can be effectively heated, it also causes waste of the metal coil 22 and the outer covering layer 23, increasing the manufacturing cost.

[0062] When the length of the coating layer 23 accounts for 2 / 3 to 1 of the length of the metal liner 21, the coating layer 23 can completely cover the metal coil 22, protect the metal coil 22 and prevent water leakage, and avoid wasting the coating layer 23. When the length of the coating layer 23 is less than 2 / 3 of the length of the metal liner 21, the coating layer 23 may not be able to completely cover the metal coil 22, and part of the metal coil 22 may leak out, posing a safety hazard; when the length of the coating layer 23 is greater than 1 times the length of the metal liner 21, the length of the coating layer 23 is too long, wasting raw materials.

[0063] See also Figure 4 The present application also provides a urea tank, comprising: a urea tank body (not shown in the figure) and at least one filling pipe 1 described in any of the above embodiments connected to the urea tank body, wherein a heating device is arranged in the urea tank body.

[0064] Specifically, the urea tank body contains urea solution, and a heating device is arranged in the urea tank body. The heating device may be a rubber heating wire and / or a thermistor heating block, and the heating device is used to heat the urea solution in the urea tank body.

[0065] The urea tank body is connected to at least one of the filling pipes 1 , and the filling pipe 1 is in communication with the urea tank body, and is used to inject external urea solution into the urea tank body through the filling pipe 1 .

[0066] The urea tank body may be connected to only one filling pipe 1, or may be connected to two or more filling pipes 1. When the urea tank body is connected to multiple filling pipes 1, the multiple filling pipes 1 may all be used to fill urea solution, or may be used for other functions, such as being used as exhaust pipes or ventilation pipes.

[0067] For example, see Figure 4 As shown, the urea tank includes two filling pipes 1, one of which is used for filling urea solution, and the other is used as an exhaust pipe or a ventilation pipe.

[0068] The urea tank provided in the present application can not only utilize the heating device to heat the urea solution in the urea tank body, but also utilize the heating component 2 to heat the urea solution in the filling pipe 1, while preventing the urea solution in the urea tank body and the urea solution in the filling pipe 1 from freezing, thereby ensuring that the urea solution can be used and filled normally.

[0069] See also Figure 5 The present application also provides a heating control method for a urea tank, comprising:

[0070] Step S100, obtaining the ambient temperature and the urea temperature in the urea tank;

[0071] Step S200, in response to the ambient temperature and / or urea temperature being less than or equal to a preset start-up heating temperature, starting a heating device in the urea tank body for heating;

[0072] Step S300, obtaining a historical urea remaining amount, and determining whether the historical urea remaining amount meets a preset heating condition;

[0073] Step S400: In response to the historical urea remaining amount meeting the preset heating condition, controlling the heating component of the filling pipe to heat.

[0074] Specifically, the ambient temperature is the current temperature of the environment in which the urea tank is located.

[0075] First, the ambient temperature and the urea temperature in the urea tank are obtained. When the ambient temperature and / or the urea temperature is less than or equal to the preset heating start temperature, it indicates that the ambient temperature and / or the urea temperature is too low, and the urea solution in the urea tank (including the urea solution in the urea tank body and the urea solution in the filling pipe) is at risk of freezing. At this time, the heating device in the urea tank body is started to heat the urea solution in the urea tank body to ensure that the urea solution in the urea tank body will not freeze and will not affect the normal use of the urea solution.

[0076] The preset heating start temperature is the preset maximum temperature value at which the heating device needs to be turned on. When the ambient temperature and / or the urea temperature is less than or equal to the preset maximum temperature value, it means that the temperature is too low and the urea solution has the risk of freezing or has already frozen, and the heating device needs to be turned on. When the ambient temperature and / or the urea temperature is greater than the preset maximum temperature value, it means that the temperature is high and the urea solution has no risk of freezing, and the heating device does not need to be turned on.

[0077] The preset heating start temperature is set according to the freezing point of the urea solution (the standard urea freezing point is -11°C) and actual test experience, and the preset heating start temperature is slightly greater than the standard urea freezing point. For example, the preset heating start temperature is -9°C.

[0078] After the heating device in the urea tank body is started for heating, the historical urea remaining amount is obtained to determine whether the historical urea remaining amount meets the preset heating conditions. Specifically, since the urea solution in the urea tank body and the filling pipe may have frozen at this time, the current remaining urea amount in the urea tank cannot be accurately measured at this time, so the historical urea remaining amount is obtained as a judgment basis. The historical urea remaining amount is the urea remaining amount of the urea tank detected most recently from the current moment.

[0079] It is determined whether the historical urea remaining amount meets a preset heating condition, and when the historical urea remaining amount meets the preset heating condition, a heating component of the filling pipe is controlled to heat the urea solution in the filling pipe.

[0080] In the present application, whether the heating device needs to be turned on is determined by monitoring and judging the ambient temperature and the urea temperature in the urea tank, and whether the heating component needs to be turned on is determined by monitoring and judging the historical urea remaining amount, so that the turning on of the heating device and the heating component is more in line with actual needs. The urea solution in the urea tank body and the urea solution in the filling pipe can be heated when the conditions are met, and the heating device and the heating component can be not started when the conditions are not met, thereby avoiding energy waste.

[0081] In some embodiments, the step S300 determines whether the historical urea remaining amount meets the preset heating condition, including:

[0082] Step S310: In response to the historical urea remaining amount being greater than or equal to the first maximum urea amount and less than the maximum rated urea amount, continuously acquiring the urea consumption; wherein the first maximum urea amount is the maximum urea amount when no urea solution exists in the filling pipe, and the maximum rated urea amount is the total urea amount when the urea solution in the urea tank body reaches the rated amount of the body and the urea solution in the filling pipe reaches the rated amount of the pipe;

[0083] Step S320: determining a current urea remaining amount based on the urea consumption;

[0084] Step S330: In response to the current remaining urea amount being less than the first maximum urea amount, determining whether the historical remaining urea amount meets the preset heating condition.

[0085] Specifically, the first maximum urea amount is the first maximum urea amount when no urea solution exists in the filling pipe (at this time, only the urea solution exists in the urea tank).

[0086] The maximum rated amount of urea is the total amount of urea when the urea solution in the urea tank body has been filled to the rated amount and the urea solution in the filling pipe has also been filled to the rated amount.

[0087] When the historical urea remaining amount is less than the first maximum urea amount, there is no urea solution in the filling pipe, and there is no urea solution in the filling pipe that freezes, so there is no need to start the heating component.

[0088] When the historical urea remaining amount is greater than or equal to the first maximum urea amount and less than the maximum rated amount of urea, it means that there is urea solution in the filling pipe at this time, but the urea solution is relatively large at this time, and the urea solution in the urea tank body has reached the rated amount. At this time, even if the heating component is started to heat the urea solution in the filling pipe, the heated and melted urea solution cannot flow into the urea tank body and still accumulates in the filling pipe. At this time, in order to avoid the urea in the filling pipe from freezing, it is necessary to continuously turn on the heating component for heating, which consumes energy excessively. In addition, in this case, even if the urea solution in the filling pipe is kept from freezing, the urea solution in the urea tank body has reached the rated amount, and the urea solution cannot be added at this time. Therefore, it is not appropriate to start the heating component for heating at this time to avoid wasting energy, and the filling pipe cannot play the role of continuing to fill.

[0089] Therefore, when the historical urea remaining amount is greater than or equal to the first maximum urea amount and less than the maximum rated urea amount, the heating component is not heated at this time, but the urea consumption is continuously obtained. The urea consumption is the sum of the urea consumption during the vehicle's multiple starts and driving.

[0090] The current urea remaining amount is determined based on the urea consumption, and the current urea remaining amount is equal to the value obtained by subtracting the urea consumption from the historical urea remaining amount. When the current urea remaining amount is less than the first maximum urea amount, it is determined that the historical urea remaining amount meets the preset heating condition, and the heating component can be turned on to heat the urea solution in the filling pipe. At this time, since the current urea remaining amount is less than the first maximum urea amount, the total amount of urea solution is small at this time, and the urea solution in the urea tank body has not reached the rated amount. The urea solution in the filling pipe can flow into the urea tank body after being heated and melted, so that too much urea solution will not accumulate in the filling pipe. The heating component does not need to be heated continuously, and only the urea solution that has been frozen in the existing filling pipe needs to be heated and melted. After the urea solution that has been frozen in the existing filling pipe is heated and melted and flows into the urea tank body, the heating component can be turned off. In this way, the urea solution in the filling pipe can be prevented from freezing and energy can be saved.

[0091] In the present application, the current remaining amount of urea is determined by the urea consumption, and whether the heating component needs to be turned on is judged based on the remaining amount of urea. The heating component can be turned on in time when the conditions are met to heat the urea solution that has frozen in the filling pipe, and the heated and melted urea solution can flow into the urea tank body to avoid too much urea solution accumulating in the filling pipe, ensuring that the urea solution can be normally filled later. At the same time, the heating component can be turned off when the conditions are not met to avoid energy waste.

[0092] In some embodiments, the step S300 determines whether the historical urea remaining amount meets the preset heating condition, and further includes:

[0093] Step S340, in response to the historical urea remaining amount being greater than the maximum rated amount of urea, continuously acquiring urea consumption;

[0094] Step S350: In response to the urea consumption being greater than or equal to the minimum urea consumption, determining that the historical urea remaining amount meets the preset heating condition; wherein the minimum urea consumption is the difference between the second maximum urea amount and the first maximum urea amount, the second maximum urea amount is the maximum limit amount of urea that the urea tank can accommodate in the case of over-addition of urea, and the second maximum urea amount is greater than the maximum rated amount of urea.

[0095] Specifically, the second maximum urea amount is the maximum limit amount of urea that the urea tank can accommodate when overfilling urea, that is, the urea solution in the urea tank body has been filled to the rated amount and the urea solution in the filling pipe has exceeded the rated amount, reaching the capacity limit of the urea tank. The second maximum urea amount is greater than the maximum rated amount of urea.

[0096] The minimum urea consumption is the difference between the second maximum urea amount and the first maximum urea amount. In any case, when the urea consumption is greater than or equal to the minimum urea consumption, it is determined that the historical urea remaining amount meets the preset heating condition, and the heating component is started to heat the urea solution that has frozen in the filling pipe.

[0097] When the urea consumption is greater than or equal to the minimum urea consumption, it indicates that the remaining urea solution in the urea tank body is less than the rated capacity of the urea tank body, and the urea solution heated and melted in the filling pipe can still flow into the urea tank body. At this time, the urea solution that has frozen in the filling pipe is heated by the heating component, and the heated and melted urea solution can enter the urea tank body, so that not too much urea solution is accumulated in the filling pipe. The heating component does not need to be heated continuously, and only the urea solution that has frozen in the existing filling pipe needs to be heated and melted. After the urea solution that has frozen in the existing filling pipe is heated and melted and flows into the urea tank body, the heating component can be turned off, so that the urea solution in the filling pipe can be prevented from freezing and energy can be saved.

[0098] When the urea consumption is less than the minimum urea consumption, the remaining urea solution in the urea tank body still reaches its rated capacity. At this time, even if the urea solution in the filling pipe is heated and melted by the heating component, the melted urea solution cannot flow into the urea tank and still accumulates in the filling pipe. At this time, in order to avoid the urea in the filling pipe from freezing, it is necessary to continuously turn on the heating component for heating, which consumes excessive energy. In addition, in this case, even if the urea solution in the filling pipe is kept from freezing, the urea solution in the urea tank body has reached the rated amount, and the urea solution cannot be added at this time. Therefore, it is not appropriate to start the heating component for heating at this time to avoid wasting energy, and the filling pipe cannot continue to fill.

[0099] In the present application, when the historical urea remaining amount is greater than the maximum rated amount of urea, at this time, due to the existence of over-addition of urea solution, the actual urea amount has exceeded the maximum range of the liquid level (i.e., the liquid level scale corresponding to the maximum rated amount of urea). At this time, it is impossible to confirm whether the urea remaining amount is accurate, so only the urea consumption is detected. When the urea consumption is greater than or equal to the minimum urea consumption, the heating component is started to add the urea solution in the filling pipe to avoid freezing of the urea solution in the filling pipe. When the urea consumption is less than the minimum urea consumption, the filling pipe is not heated to avoid energy waste.

[0100] See also Figure 7 The present application also provides a heating control method for a urea tank, wherein the method uses the following terms:

[0101] Temperature threshold T0 (i.e. the above-mentioned preset heating start temperature): the temperature value for controlling the start / stop of the urea heating device. This threshold is generally slightly higher than the urea freezing point temperature of -11°C);

[0102] Threshold n0 (i.e. the first maximum urea amount): the maximum urea amount at which no urea solution exists in the urea filling pipe;

[0103] Threshold N0 (i.e. the above-mentioned minimum urea consumption): in the case of over-addition of urea, the difference between the maximum urea amount of the system (i.e. the above-mentioned second maximum urea amount) and the threshold n0, that is, no matter what the case, when the urea consumption exceeds the threshold N0, there will be no urea in the filling pipe;

[0104] Urea consumption N: the sum of urea consumption during multiple starts and driving of the vehicle;

[0105] Historical urea remaining amount n1: The most recently detected urea remaining amount. When urea freezes, the system cannot effectively detect the urea level and volume. n1 is the recorded urea amount before freezing.

[0106] Heating time t: Through calibration test, the time required for the urea filling pipe to completely thaw when it is completely frozen and blocked.

[0107] The specific implementation process of the heating control method of the urea tank is as follows:

[0108] When the ambient temperature or urea temperature is lower than the temperature threshold T0, the heating device of the urea tank is turned on (the urea will not freeze when it is higher than the threshold T0, and this situation is not discussed). At this time, the urea remaining amount n1 detected last time needs to be confirmed. The confirmation results have the following three situations:

[0109] 1. When n1 is less than the threshold value n0, there will be no urea solution in the urea filling pipe, and there will be no hidden danger of icing and clogging of the filling pipe. At this time, the heating of the filling pipe will not be started;

[0110] 2. When the threshold value n0≤n1<rated volume of urea (i.e. the above-mentioned maximum rated volume of urea), ice will be blocked in the urea filling pipe, but the remaining amount of urea n1 is large, and the urea in the filling pipe cannot be cleared by heating it immediately. At this time, the urea consumption N will be continuously counted, and then the current remaining amount of urea n2 (n2=n1-N) will be calculated. When the current remaining amount of urea n2<threshold value n0, the urea in the filling pipe will flow into the urea tank body after heating and thawing, so the filling pipe heating component can be started;

[0111] 3. When n1≥rated urea volume, the actual urea amount may have exceeded the maximum range of the liquid level due to over-addition of urea. At this time, it is impossible to confirm whether the remaining urea amount is accurate. Therefore, in this case, only the urea consumption N is detected. When N≥threshold N0, the urea in the filling pipe can flow into the urea tank after thawing, so the filling pipe heating function can be started; when N<threshold N0, the urea in the filling pipe cannot flow into the urea tank after thawing, and the filling pipe heating function is not started.

[0112] When the heating component of the filling pipe is turned on for heating time t, the ice in the filling pipe is completely melted, and the heating function is turned off at this time to reduce energy consumption.

[0113] The heating control method provided by the present application automatically identifies the situation of the urea solution, determines whether there is a hidden danger of ice blockage in the filling pipe, and starts the heating function when the conditions are met to reduce the energy consumption of the whole vehicle. The heating function of the urea filling pipe is started when the conditions are met to solve the problem of urea filling in winter, and the heating function can be turned off under normal circumstances to avoid energy waste.

[0114] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0115] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0116] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a heating control device for a urea tank.

[0117] The heating control device of the urea tank comprises:

[0118] An acquisition module is configured to acquire the ambient temperature and the urea temperature in the urea tank;

[0119] A starting module is configured to start a heating device in the urea tank body for heating in response to the ambient temperature and / or urea temperature being less than or equal to a preset start-up heating temperature;

[0120] A judgment module is configured to obtain a historical urea remaining amount and judge whether the historical urea remaining amount meets a preset heating condition;

[0121] The execution module is configured to control the heating component of the filling pipe to heat in response to the historical urea remaining amount meeting the preset heating condition.

[0122] In some embodiments, the judgment module is further configured to continuously obtain urea consumption in response to the historical urea remaining amount being greater than or equal to a first maximum urea amount and less than a maximum rated urea amount; wherein the first maximum urea amount is the first maximum urea amount when no urea solution exists in the filling pipe;

[0123] Based on the urea consumption, determining a current urea remaining amount;

[0124] In response to the current remaining urea amount being less than the first maximum urea amount, it is determined that the historical remaining urea amount meets the preset heating condition.

[0125] In some embodiments, the judgment module is further configured to continuously obtain urea consumption in response to the historical urea remaining amount being greater than the maximum rated amount of urea;

[0126] In response to the urea consumption being greater than or equal to the minimum urea consumption, it is determined that the historical urea remaining amount meets the preset heating condition; wherein the minimum urea consumption is the difference between the second maximum urea amount and the first maximum urea amount in the case of over-addition of urea.

[0127] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0128] The device of the above embodiment is used to implement the heating control method of the corresponding urea tank in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0129] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the heating control method for the urea tank described in any of the above embodiments is implemented.

[0130] Figure 6A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0131] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0132] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0133] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0134] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0135] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0136] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0137] The electronic device of the above embodiment is used to implement the heating control method of the corresponding urea tank in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0138] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the heating control method of the urea tank as described in any of the above embodiments.

[0139] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0140] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the heating control method of the urea tank as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0141] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides a vehicle, including the filling pipe described in the above-mentioned first aspect, the urea tank described in the above-mentioned second aspect, or the electronic device described in the above-mentioned fourth aspect.

[0142] The vehicle has the beneficial effects described in any of the above embodiments, which will not be repeated here.

[0143] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0144] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0145] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0146] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A filling pipe with heating function, characterized in that: include: A pipe body and a heating component installed on the pipe body, the heating component includes a metal lining and a metal coil, the metal lining is built into the pipe body, the outer wall of the metal lining is connected to the inner wall of the pipe body, the metal coil is sleeved on the outer wall of the pipe body and arranged corresponding to the metal lining, and the metal coil is used to connect to an external AC power supply.

2. The filling pipe according to claim 1, characterized in that: The heating component also includes a coating layer, which is sleeved on the outer wall of the metal coil and connected to the outer wall of the tube body, and the metal coil is located in the coating layer.

3. The filling pipe according to claim 2, characterized in that: The tube body comprises a straight portion, the metal liner is built in the straight portion of the tube body, and the metal coil is sleeved on the outer wall of the straight portion.

4. The filling pipe according to claim 3, characterized in that: The pipe body includes a plurality of straight portions, and the filling pipe includes a plurality of heating components, and the plurality of heating components correspond to the plurality of straight portions one by one.

5. The filling pipe according to claim 3, characterized in that: The length of the metal lining accounts for 4 / 5 to 1 of the length of the straight portion, the sleeve length of the metal coil accounts for 1 / 3 to 5 / 6 of the length of the metal lining, the length of the coating layer accounts for 2 / 3 to 1 of the length of the metal lining, and the length direction is the axial direction of the tube body.

6. A urea tank, characterized in that: include: A urea tank body and at least one filling pipe according to any one of claims 1 to 5 connected to the urea tank body, wherein a heating device is arranged in the urea tank body.

7. A heating control method for a urea tank according to claim 6, characterized in that: include: Obtain the ambient temperature and the urea temperature in the urea tank; In response to the ambient temperature and / or urea temperature being less than or equal to a preset start-up heating temperature, a heating device in the urea tank body is started to heat the urea tank body; Obtaining a historical urea remaining amount, and determining whether the historical urea remaining amount meets a preset heating condition; In response to the historical urea remaining amount meeting the preset heating condition, the heating component of the filling pipe is controlled to perform heating.

8. The method according to claim 7, characterized in that Determining whether the historical urea remaining amount meets the preset heating condition includes: In response to the historical urea remaining amount being greater than or equal to a first maximum urea amount and less than a maximum rated urea amount, the urea consumption amount is continuously acquired; wherein the first maximum urea amount is the maximum urea amount when no urea solution exists in the filling pipe, and the maximum rated urea amount is the total amount of urea when the urea solution in the urea tank body reaches the rated amount of the body and the urea solution in the filling pipe reaches the rated amount of the pipe; Based on the urea consumption, determining a current urea remaining amount; In response to the current remaining urea amount being less than the first maximum urea amount, it is determined that the historical remaining urea amount meets the preset heating condition.

9. The method according to claim 8, characterized in that The determining whether the historical urea remaining amount meets the preset heating condition also includes: In response to the historical urea remaining amount being greater than the maximum rated amount of urea, continuously acquiring urea consumption; In response to the urea consumption being greater than or equal to the minimum urea consumption, it is determined that the historical urea remaining amount meets the preset heating condition; wherein the minimum urea consumption is a difference between a second maximum urea amount and the first maximum urea amount, the second maximum urea amount is a maximum limit amount of urea that the urea tank can accommodate in the case of over-addition of urea, and the second maximum urea amount is greater than the maximum rated amount of urea.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 7 to 9 is implemented.

11. A vehicle, characterized in that: It comprises the filling pipe according to claims 1 to 5, the urea tank according to claim 6 or the electronic device shown in claim 10.

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