An adaptive and calibrable intelligent fuse matching system

Abstract

The present invention discloses an adaptive calibrable intelligent fuse matching system. It includes a calibration module, which is used to calculate the fuse size required for the circuit according to the current electrical load; an automatic matching module, which is used to select multiple fuses of corresponding gears according to the determined fuse size, connect the selected multiple fuses in parallel to the circuit where the electrical load is located, and connect the line where one of the fuses is located; an information feedback module, which is used to feed back the gear of the fuse used in the current connected line to the background in real time, and when the fuse burns out, the burned fuse information is fed back to the background. The present invention selects different fuse gears according to different electrical load sizes, the method is simple and easy to implement, and when the circuit is short-circuited or overloaded, causing the current fuse to burn out, other fuses with similar capacity can be automatically selected. When applied to a vehicle, it can ensure that the vehicle will not break down or burn out.

Description

Technical Field

[0001] The invention belongs to the field of automobile technology, and in particular relates to an adaptive calibratable intelligent fuse matching system. Background Art

[0002] Fuses are an essential part of automotive circuits. If there is no fuse in the circuit or the selected fuse model does not match the wire diameter, once the circuit is overloaded or short-circuited, the current flowing through the wire exceeds the wire's carrying current. At this time, the wire will overload and heat up, or even spontaneously combust, causing a safety accident. Therefore, the selection of vehicle circuit fuses and wires is particularly important. At present, the selection of fuse capacity on vehicles mostly depends on the calculation of empirical formulas, and then certain tests are performed to verify it. The calculation accuracy of empirical public disclosure is not high. At the same time, the matching test of fuses and wire diameters has the problems of long test cycles, limitations in testing, and high costs.

[0003] Using empirical formulas to select the capacity of the fuse in the circuit and then conducting certain tests to verify it has the disadvantages of low calculation accuracy and long test cycle. Once an overload or short circuit occurs in the circuit, if the current flowing through the wire does not match the capacity of the fuse, it will cause the vehicle to break down at best, or even cause the vehicle to catch fire. The former seriously affects the timeliness of commercial vehicle delivery, and the latter is prone to safety accidents. At the same time, with the intelligentization, networking, electrification and sharing of vehicles, the degree of automotive electronics is getting higher and higher, and electronic products are being used more and more in automobiles. The poor systematicity of this fuse selection method will seriously affect the reliability of the entire vehicle. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology and to provide an adaptive calibratable intelligent fuse matching system to solve the problem of inaccurate fuse selection due to low calculation accuracy, which in turn causes problems with automobile-related safety, reliability and timeliness.

[0005] The technical solution adopted by the present invention is: an adaptive calibrable intelligent fuse matching system, comprising

[0006] A calibration module, which is used to calculate the fuse size required for the circuit based on the current electrical load;

[0007] An automatic matching module, used for selecting a plurality of fuses of corresponding gears according to the determined fuse size, connecting the selected plurality of fuses in parallel to the circuit where the electrical load is located, and connecting the line where one of the fuses is located;

[0008] The information feedback module is used to feed back the position of the fuse used in the current connected line to the background in real time. When the fuse burns out, the information of the burned fuse is fed back to the background.

[0009] Furthermore, the calibration module includes a model building module, a short circuit fault injection module and a fuse model calculation module.

[0010] The model building module is used to model the circuit model according to the electrical load and the electrical schematic diagram of the whole vehicle;

[0011] The short-circuit fault injection module is used to inject a short-circuit fault into the load in the constructed model, and the fault time is T seconds;

[0012] The fuse model calculation module is used to calculate the electrical parameters output by the circuit model in a steady state after a short-circuit fault is injected, and obtain a fuse model size suitable for the current circuit load.

[0013] Furthermore, the fault time T is 1-5s.

[0014] Furthermore, the electrical parameters include short-circuit current, fuse blowing time and wire temperature.

[0015] Furthermore, the electrical load includes multiple ones, and each electrical load is modeled separately.

[0016] Furthermore, when the selected multiple fuses are connected in parallel to the circuit where the electrical load is located, a MOS tube is connected in series at one end of each fuse, and the fuse used for the current electrical load is determined by controlling one of the MOS tubes to be closed.

[0017] Furthermore, the gear positions of the selected multiple fuses are all the same.

[0018] Furthermore, the gears of the selected multiple fuses are all different, and the gear difference between the fuse with the maximum gear and the fuse with the minimum gear is less than a set value.

[0019] Furthermore, if a fuse in a currently connected line burns out, a new fuse with the same or closest capacity to the burned-out fuse is automatically matched, and the line where the matched new fuse is located is connected.

[0020] Furthermore, it also includes an alarm module, when the fuse in the current connected line burns out, an alarm is issued through the alarm module.

[0021] The beneficial effects of the present invention are:

[0022] The present invention selects different fuse positions according to different electrical load sizes. The method is simple and easy to implement. When a short circuit or overload occurs in the circuit and causes the current fuse to burn out, other fuses with similar capacities can be automatically selected. When applied to a vehicle, it can ensure that the vehicle will not break down or burn out.

[0023] When the fuse burns out, the present invention can send out an alarm to remind the user of the current fuse burnout information, so as to facilitate after-sales service to solve the current fault more quickly, thereby greatly improving the safety and reliability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the principle diagram of the fuse matching system of the present invention.

[0025] Figure 2 The figure is a flow chart of the fuse matching method of the present invention.

[0026] Figure 3 A schematic diagram of the calibration module of the present invention for determining the fuse size.

[0027] Figure 4 A schematic diagram of connecting several fuses to an electrical load according to the present invention.

[0028] Figure 5 It is a schematic diagram of each fuse connected to a MOS tube in the present invention. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figure 1-5 As shown, the present invention provides an adaptive calibrable intelligent fuse matching system, comprising

[0031] A calibration module is used to calculate the fuse size (capacity / current / power, etc.) required for the circuit based on the current electrical load;

[0032] An automatic matching module, used for selecting a plurality of fuses of corresponding gears according to the determined fuse size, connecting the selected plurality of fuses in parallel to the circuit where the electrical load is located, and connecting the line where one of the fuses is located;

[0033] The information feedback module is used to provide real-time feedback of the position of the fuse used in the current connected line to the background (simulated or real instrument, T-BOX, vehicle controller, etc.). When the fuse burns out, the information of the burned fuse is fed back to the background.

[0034] In the above scheme, the calibration module includes a model building module, a short circuit fault injection module and a fuse model calculation module.

[0035] The model building module is used to build a circuit model according to the electrical load and the electrical schematic diagram of the whole vehicle; the electrical load includes multiple ones, and each electrical load is modeled separately.

[0036] The short-circuit fault injection module is used to inject a short-circuit fault into the load in the constructed model, and the fault time is T seconds; the fault time T is 1-5s.

[0037] The fuse model calculation module is used to calculate the electrical parameters output by the circuit model in a steady state after the short circuit fault is injected, and obtain the fuse model size suitable for the current circuit load. The electrical parameters include short circuit current, fuse fusing time, wire temperature and load voltage.

[0038] In the above scheme, when the selected multiple fuses are connected in parallel to the circuit where the electrical load is located, a MOS tube is connected in series at one end of each fuse, and the fuse used for the current electrical load is determined by controlling one of the MOS tubes to be closed.

[0039] In the above scheme, the gears of the selected multiple fuses can be the same, different, or partially the same and partially different. When different gears appear, the gear difference between the fuse with the largest gear and the fuse with the smallest gear is less than the set value.

[0040] In the above scheme, if the fuse in the currently connected line burns out, a new fuse with the same or closest capacity to the burned-out fuse is automatically matched, and the line where the matched new fuse is located is connected.

[0041] The above solution also includes an alarm module, and when the fuse in the current connected line burns out, an alarm is issued through the alarm module.

[0042] Example

[0043] The intelligent fuse matching system of this embodiment includes a calibration module, an automatic matching module and an information feedback module. First, the calibration module can calculate the fuse size (capacity, current) required by the circuit according to the current electrical load. Then the automatic matching module analyzes the rationality of the current calculated fuse size and selects the fuse of the corresponding gear. Finally, the information feedback module feeds back the current fuse gear and the information of burning to the instrument or TBOX. When the circuit is short-circuited or overloaded, causing the current fuse to burn, the automatic matching module will match the second gear (similar to the first gear capacity) upward to ensure the smooth flow of the circuit. At the same time, the information feedback module will feedback the information of the current fuse burning, which is convenient and faster to solve the current fault.

[0044] The fuse calibration module includes a model building module, a short-circuit fault injection module, and a fuse model calculation module. First, in the model building module, the circuit model is built according to the load parameters and the vehicle electrical schematic diagram (multiple electrical loads can be modeled at the same time), and then a short-circuit fault is injected into the load in the fault injection module, and the fault time is T seconds. Finally, the short-circuit current output in the steady state, the fuse melting time, the wire temperature and other electrical parameters are analyzed, and then the fuse model suitable for the current circuit load is calculated (and several fuse models of similar size are given).

[0045] The automatic matching module analyzes the rationality of the fuse size calculated by the fuse calibration module, and matches the most suitable fuse for the current circuit load by controlling the closing and opening of the MOS tube (each MOS tube is connected to a fuse of a gear). At the same time, when the current fuse is blown, other fuses with similar capacity can be automatically matched.

[0046] In order to make the description of the present disclosure more detailed and complete, the above description is provided for the implementation and specific embodiments of the present invention; however, this is not the only form of implementing or using the specific embodiments of the present invention. The implementation covers the features of multiple specific embodiments and the method steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0047] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0048] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0049] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the implementation methods of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation methods of the present application.

[0050] The various illustrative logic blocks or units described in the embodiments of the present invention can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination of the above. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0051] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. An adaptive and calibratable intelligent fuse matching system, characterized in that: Includes a calibration module for calculating the fuse size required for a circuit based on the current electrical load; The automatic matching module is used to select multiple fuses of corresponding gears according to the determined fuse size, connect the selected multiple fuses in parallel to the circuit where the electrical load is located, and connect the line where one of the fuses is located; if the fuse in the currently connected line is burned out, automatically match a new fuse with the same or closest capacity to the burned fuse, and connect the line where the matched new fuse is located by controlling the corresponding MOS tube to close; The information feedback module is used to feed back the position of the fuse used in the current connected line to the background in real time. When a fuse burns out, the information of the burned fuse is fed back to the background. The calibration module includes a model building module, a short circuit fault injection module and a fuse model calculation module. The model building module is used to model the circuit model according to the electrical load and the electrical schematic diagram of the whole vehicle; The short-circuit fault injection module is used to inject a short-circuit fault into the load in the constructed model, and the fault time is T seconds; The fuse model calculation module is used to calculate the electrical parameters output by the circuit model in a steady state after a short circuit fault is injected, so as to obtain a fuse size suitable for the current circuit load.

2. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: The fault time T is 1-5s.

3. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: The electrical parameters include short-circuit current, fuse blowing time, and wire temperature.

4. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: The electrical loads include multiple ones, and each electrical load is modeled separately.

5. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: When multiple selected fuses are connected in parallel to the circuit where the electrical load is located, a MOS tube is connected in series at one end of each fuse, and the fuse used for the current electrical load is determined by controlling one of the MOS tubes to close.

6. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: The positions of the selected multiple fuses are all the same.

7. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: The gears of the selected multiple fuses are all different, and the gear difference between the fuse with the largest gear and the fuse with the smallest gear is less than the set value.

8. The adaptive calibratable intelligent fuse matching system according to claim 1, characterized in that: It also includes an alarm module, and when the fuse in the current connected line burns out, an alarm is issued through the alarm module.

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