Electric control box, modular combination method and device of electric control box

Abstract

The present invention discloses an electric control box, a modular combination method and a device of the electric control box, wherein the electric control box comprises: a filter module for filtering interference signals of power supply signals and improving the electromagnetic compatibility effect of the electric control box; a drive module for driving a variable frequency motor and realizing the adjustment of the speed of the variable frequency motor; a rectifier inverter module for converting the power supply format; a main control module for controlling the load and realizing the control function of the electric control box, and when the power supply format does not match, the voltage is converted through the rectifier inverter module. The present invention solves the problem of poor universality of the air conditioner control mainboard in the prior art, improves the universality, and can realize rapid maintenance and replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of electric control equipment, and in particular to an electric control box, and a modular combination method and device of the electric control box. Background Art

[0002] In order to suit different groups of people, there are various styles of air conditioners on the market. Especially in the field of army air conditioners, the dimensions of air conditioners are even more bizarre. In order to better suit the vehicle body, the specifications are determined by the vehicle body itself. Common types are: integral air conditioners, split air conditioners, and roof-mounted air conditioners. These three types of air conditioners are divided into many types according to functions such as single cooling, heat pump, variable frequency, and fixed frequency. Although the internal motherboards and control methods are mostly similar, their appearances are diverse, and each individual design and development requires a lot of time, and the degree of universality is poor.

[0003] With regard to the problem of poor universality of air-conditioning control mainboards in the related art, no effective solution has been proposed yet. Summary of the invention

[0004] The present invention provides an electric control box, a modular assembly method and a device for the electric control box, so as to at least solve the problem of poor universality of air-conditioning control mainboards in the prior art.

[0005] In order to solve the above technical problems, according to one aspect of an embodiment of the present invention, an electric control box is provided, which at least includes the following modules: a filter module, used to filter out interference signals of power supply signals and improve the electromagnetic compatibility of the electric control box; a drive module, used to drive the variable frequency motor and realize the adjustment of the speed of the variable frequency motor; a rectifier and inverter module, used to convert the power supply format; a main control module, used to control the load and realize the control function of the electric control box. When the power supply format does not match, the voltage conversion is performed through the rectifier and inverter module.

[0006] Furthermore, the filter module is divided into a DC filter module and an AC filter module according to the current type; wherein the voltage of the DC filter module is: DC12V-DC1000V; the voltage of the AC filter module is: AC110V-AC380V.

[0007] Furthermore, the drive module is divided into: DC drive module and AC drive module according to the current type; wherein the voltage of the DC drive module is: DC12V-DC1000V; the voltage of the AC drive module is: AC110V-AC380V.

[0008] Furthermore, the rectifier inverter module is divided into: DC-AC rectifier inverter module, AC-DC rectifier inverter module according to the current type; the DC-AC rectifier inverter module is divided into: DC24V-AC220V rectifier inverter module, DC530V-AC220V rectifier inverter module according to the voltage size; the AC-DC rectifier inverter module is divided into: AC220V-DC24V rectifier inverter module, AC380V-DC24V rectifier inverter module according to the voltage size.

[0009] Furthermore, the main control module is divided into: DC main control module and AC main control module according to the current type; wherein the voltage of the DC main control module is DC12V-DC1000V; the voltage of the AC main control module is AC110V-AC380V.

[0010] Furthermore, the filter module, the drive module, the rectifier inverter module, and the main control module are all placed in an independent electrical box, wherein the electrical box is a metal shell.

[0011] Furthermore, the electrical box interface of the filter module and the rectifier inverter module includes: an input interface and an output interface; the electrical box interface of the drive module and the main control module includes: an input interface, an output interface, and a communication interface, wherein the communication interface uses CAN signals for communication.

[0012] Furthermore, the interfaces of the electrical box are all connected to the aviation plug connector; shielded wires are used to connect the aviation plug connector and the power supply, as well as each aviation plug connector, to achieve different assembly combinations; among which, the shielding layer of the shielded wire is made of PE material.

[0013] Furthermore, the interfaces of the electrical box are all plug-in mode interfaces to achieve different assembly combinations.

[0014] Further, the assembly combination includes at least one of the following combinations: a first combination, including: a main control module, wherein the first end of the main control module is connected to the power supply, and the second end of the main control module is connected to the load; a second combination, including: a filter module and a main control module, wherein the first end of the filter module is connected to the power supply, the second end of the filter module is connected to the first end of the main control module, and the second end of the main control module is connected to the load; a third combination, including: a rectifier-inverter module and a main control module, wherein the first end of the rectifier-inverter module is connected to the power supply, the second end of the rectifier-inverter module is connected to the first end of the main control module, and the second end of the main control module is connected to the load; a fourth combination, including: a filter module, a rectifier-inverter module, and a main control module. A fifth combination includes: a filter module, a rectifier inverter module, a drive module, and a main control module, wherein the first end of the filter module is connected to the power supply, the second end of the filter module is connected to the first end of the rectifier inverter module, the second end of the rectifier inverter module is connected to the first end of the main control module, and the second end of the main control module is connected to the load; and a fifth combination includes: a filter module, a rectifier inverter module, a drive module, and a main control module, wherein the first end of the filter module is connected to the power supply, the second end of the filter module is connected to the first end of the rectifier inverter module, the second end of the rectifier inverter module is connected to the first end of the drive module, the second end of the drive module is connected to the compressor, the third end of the drive module is connected to the first end of the main control module, and the second end of the main control module is connected to the load.

[0015] According to another aspect of an embodiment of the present invention, a modular combination method of an electric control box is provided, comprising: obtaining a user's functional requirements for the electric control box; determining functional modules required for the electric control box according to the functional requirements; and combining the required functional modules to form the electric control box.

[0016] Furthermore, before obtaining the user's functional requirements for the electrical control box, it also includes: obtaining the load information of the electrical control box, the load information at least including the model of the load; classifying the load model, and determining the function of the load according to the category of the load model; determining the corresponding functional module according to the function of the load.

[0017] Furthermore, determining the corresponding functional module according to the function of the load includes: classifying the function of the load to determine the first type of the corresponding functional module; and then subdividing the first type according to the power supply standard of the load to determine the second type of the functional module.

[0018] Furthermore, the load is an air conditioner, and the types of load models are: cooling / heat pump air conditioner, integral / split air conditioner, fixed frequency / variable frequency air conditioner, single-unit / dual-unit integrated air conditioner.

[0019] Furthermore, the first type of functional modules includes at least: a filter module, a drive module, a main control module, and a rectifier inverter module; the power supply standard of the load includes: direct current and alternating current, wherein direct current includes DC24V and DC530V, and alternating current includes AC220V and AC380V.

[0020] Furthermore, the second type of functional modules includes at least: DC24V filter module, DC530V filter module, AC220V filter module, AC380V filter module; DC24V drive module, DC530V drive module, AC220V drive module, AC380V drive module; DC24V main control module, AC220V main control module; DC24V-AC220V rectifier inverter module, DC530V-AC220V rectifier inverter module, AC220V-DC24V rectifier inverter module, AC380V-DC24V rectifier inverter module.

[0021] Furthermore, the obtained user's functional requirements for the electric control box at least include: load power supply standard, electromagnetic compatibility requirements, and motor type.

[0022] Furthermore, the functional modules required by the electric control box are determined according to the functional requirements, including: determining the type of the required main control module according to the load power supply standard, and when the load power supply standard does not match the type of the main control module, using a rectifier inverter module to provide power for the main control module, and determining the type of the required rectifier inverter module according to the load power supply standard; determining whether a filter module is required according to the electromagnetic compatibility requirements, and when the electromagnetic compatibility requirements exceed a preset value, determining that a filter module is required, and determining the type of the required filter module according to the load power supply standard; determining whether a drive module is required according to the motor type, and when the motor type is a variable frequency motor, determining that a drive module is required, and determining the type of the required drive module according to the load power supply standard.

[0023] Furthermore, the functional modules are combined to form an electric control box, including: splicing the functional modules required for the determined electric control box, wherein the functional modules all adopt a unified plug-in mode; and combining the spliced ​​functional modules with the body of the electric control box to form the electric control box.

[0024] Furthermore, the functional modules all communicate using CAN signals.

[0025] According to another aspect of an embodiment of the present invention, a modular combination device for an electric control box is provided, comprising: a first acquisition module for acquiring the user's functional requirements for the electric control box; a first determination module for determining the functional modules required for the electric control box according to the functional requirements; and a combination module for combining the required functional modules to form the electric control box.

[0026] In the present invention, in order to improve the versatility of the electric control box, common modules of the electric control box are provided, including a filter module, a drive module, a rectifier inverter module and a main control module. The unit can be freely selected according to customer requirements and can be spliced ​​together, so as to at least solve the problem of poor universality of the air-conditioning control mainboard in the prior art, improve the degree of universality, and realize rapid maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an optional structural block diagram of an electric control box according to an embodiment of the present invention;

[0028] Figure 2 is an optional module type diagram of an electric control box according to an embodiment of the present invention;

[0029] Figure 3 is an optional module connection schematic diagram of an electric control box according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an optional modular combination of an electric control box according to an embodiment of the present invention;

[0031] Figure 5 is an optional flow chart of a modular assembly method of an electric control box according to an embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of an optional load type division of the modular combination method of the electric control box according to an embodiment of the present invention; and

[0033] Figure 7 It is an optional structural block diagram of a modular assembly device of an electric control box according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0035] Example 1

[0036] In the preferred embodiment 1 of the present invention, an electric control box is provided, which can be directly applied to various loads, such as air conditioners, water heaters, electric power and other equipment. Specifically, Figure 1 An optional structural block diagram of the electric control box is shown as follows: Figure 1 As shown, the electric control box includes at least the following modules:

[0037] The filter module is used to filter out interference signals from the power supply signal and improve the electromagnetic compatibility of the electric control box;

[0038] A drive module is used to drive the variable frequency motor to adjust the speed of the variable frequency motor;

[0039] Rectifier inverter module, used to convert power supply format;

[0040] The main control module is used to control the load and realize the control function of the electric control box. When the power supply format does not match, the voltage conversion is performed through the rectifier inverter module.

[0041] In the above-mentioned embodiment, in order to improve the versatility of the electric control box, common modules of the electric control box are provided, including a filter module, a drive module, a rectifier inverter module and a main control module. The unit can be freely selected according to customer requirements and can be spliced ​​together, so as to at least solve the problem of poor universality of the air-conditioning control mainboard in the prior art, improve the degree of universality, and realize rapid repair and replacement.

[0042] In the above embodiment, the modules of the electric control box are divided into four modules: filter module, drive module, rectifier inverter module, and main control module. The connection relationship of these four modules is determined according to their specific combination mode. Figure 1 It only lists all the modules that may be used in the electric control box, and does not limit the connection relationship.

[0043] The above four modules can also be divided into 14 smaller modules according to different power supply standards. Figure 2 As shown:

[0044] The filter module is divided into DC filter module and AC filter module according to the current type; the voltage of the DC filter module is: DC12V-DC1000V; the voltage of the AC filter module is: AC110V-AC380V. According to the commonly used power supply voltage, the DC filter module is divided into: DC24V filter module, DC530V filter module according to the voltage size; the AC filter module is divided into: AC220V filter module, AC380V filter module according to the voltage size;

[0045] The drive module is divided into DC drive module and AC drive module according to the current type; the voltage of DC drive module is DC12V-DC1000V; the voltage of AC drive module is AC110V-AC380V. According to the commonly used power supply voltage, DC drive module is divided into DC24V drive module and DC530V drive module according to the voltage size; AC drive module is divided into AC220V drive module and AC380V drive module according to the voltage size;

[0046] Rectifier inverter modules are divided into DC-AC rectifier inverter modules and AC-DC rectifier inverter modules according to current type; DC-AC rectifier inverter modules are divided into DC24V-AC220V rectifier inverter modules and DC530V-AC220V rectifier inverter modules according to voltage size; AC-DC rectifier inverter modules are divided into AC220V-DC24V rectifier inverter modules and AC380V-DC24V rectifier inverter modules according to voltage size;

[0047] The main control module is divided into DC main control module and AC main control module according to the current type; among them, the voltage of DC main control module is DC12V-DC1000V; the voltage of AC main control module is AC110V-AC380V. According to the commonly used power supply voltage, the DC main control module is a DC24V main control module; the AC main control module is an AC220V main control module.

[0048] The above 14 modules are suitable for most models, facilitating better universalization.

[0049] In a preferred embodiment of the present invention, the filter module, the drive module, the main control module, and the rectifier inverter module are all placed in an independent electrical box, such as a specially made aluminum alloy shell (with the best EMC effect), and an onboard connector is installed on the shell to unify the external interface. The filter module electrical box interface is divided into input and output; the drive module electrical box interface is divided into input, output, and communication, and the communication uses CAN (Controller Area Network) signal to control the frequency; the main control module electrical box external interface is more complex, which can be simplified to input, output, and communication, and the communication uses CAN signal to control the frequency; the rectifier inverter module electrical box interface is divided into input and output.

[0050] The above-mentioned electrical box interfaces are all connected to the aviation plug connector. The aviation plug connector and the power supply, and the aviation plug connectors are connected by shielded wires, which can be assembled in different ways. Among them, the shielding layer of the shielded wire is made of PE material. Figure 3 As shown, the electrical box includes a filter module, a main control module, and a drive module. The filter module is connected to the power supply end, and the shielding layer of the power supply is connected to PE. The shielding layer of the shielded wire is connected to the shell of the aviation plug connector, and the shell is connected to the metal electrical box, which can ensure that all electrical shells are in a grounded and shielded state. After testing, the EMC effect is good.

[0051] In another embodiment of the present invention, the electrical box interfaces are all plug-in mode interfaces, which do not require wire connection and can realize different types of assembly combinations. Unifying the electrical box interfaces helps realize different types of assembly combinations and further improves the degree of universality.

[0052] Specifically, Figure 4 The following shows the possible modular combination of the electric control box: Figure 4 As shown, the assembly combination of the electric control box module includes at least one of the following combinations:

[0053] The first combination includes: a main control module, wherein a first end of the main control module is connected to a power source, and a second end of the main control module is connected to a load;

[0054] The second combination includes: a filter module and a main control module, wherein a first end of the filter module is connected to a power source, a second end of the filter module is connected to a first end of the main control module, and a second end of the main control module is connected to a load;

[0055] The third combination includes: a rectifier inverter module and a main control module, wherein a first end of the rectifier inverter module is connected to a power source, a second end of the rectifier inverter module is connected to a first end of the main control module, and a second end of the main control module is connected to a load;

[0056] A fourth combination includes: a filter module, a rectifier inverter module, and a main control module, wherein a first end of the filter module is connected to a power source, a second end of the filter module is connected to a first end of the rectifier inverter module, a second end of the rectifier inverter module is connected to a first end of the main control module, and a second end of the main control module is connected to a load;

[0057] The fifth combination includes: a filter module, a rectifier and inverter module, a drive module, and a main control module, wherein the first end of the filter module is connected to the power supply, the second end of the filter module is connected to the first end of the rectifier and inverter module, the second end of the rectifier and inverter module is connected to the first end of the drive module, the second end of the drive module is connected to the compressor, the third end of the drive module is connected to the first end of the main control module, and the second end of the main control module is connected to the load.

[0058] Preferably, the modular assembly of the electric control box can be freely combined according to customer needs, unit characteristics, size, and function, and is not limited to the above five combinations. This modular assembly of the electric control box can not only meet customer needs, but also greatly reduce the development cost in terms of electric control, and provide great guarantee in after-sales service.

[0059] Example 2

[0060] In a preferred embodiment 2 of the present invention, a modular assembly method of an electric control box is provided, which can be directly applied to various electric control boxes. Specifically, Figure 5 An optional flow chart of the method is shown as follows: Figure 5 As shown, the method includes the following steps S502-S506:

[0061] S502: Obtaining the user's functional requirements for the electric control box;

[0062] In the present invention, the electric control box can be freely assembled and combined according to customer requirements to meet the needs of users. The functional requirements of the user for the electric control box obtained include at least: load power supply standard, electromagnetic compatibility requirements, and motor type.

[0063] S504: Determine the functional modules required by the electric control box according to the functional requirements;

[0064] On the basis of the above functional requirements, the functional modules required by the electric control box are determined according to the load power supply standard, electromagnetic compatibility requirements, and motor type to meet the various needs of users.

[0065] S506: Combine the required functional modules to form an electric control box.

[0066] The functional modules required by the determined electric control box are spliced, wherein the functional modules all adopt a unified plug-in mode, and the spliced ​​functional modules are combined with the box body of the electric control box to form the electric control box. At the same time, the functional modules all use CAN signals for communication.

[0067] In the above embodiment, in order to improve the versatility of the electric control box, common modules of the electric control box are provided, and the unit can be freely selected according to customer requirements and spliced ​​together, so as to at least solve the problem of poor commonality of air-conditioning control mainboards in the prior art, improve the degree of commonality, and realize rapid repair and replacement.

[0068] Furthermore, before obtaining the user's functional requirements for the electric control box, the present invention also provides a detailed description of the division of functional modules, which specifically includes the following steps: obtaining the load information of the electric control box; determining the functional modules of the electric control box according to the load information. The load information at least includes the model of the load, and determining the functional modules of the electric control box according to the load information includes: dividing the load model into categories, and determining the function of the load according to the category of the load model; and determining the corresponding functional module according to the function of the load. Determining the corresponding functional module according to the function of the load includes: determining the type of functional module according to the function of the load; determining the mainboard corresponding to the type of each functional module, and encapsulating the mainboard in a shell to form a functional module, wherein the shell is equipped with an onboard connector for external interface.

[0069] Preferably, determining the type of the functional module according to the function of the load includes: classifying the functions of the load to determine the first type of the corresponding functional module; and then subdividing the first type according to the power supply standard of the load to determine the second type of the functional module.

[0070] In a preferred embodiment of the present invention, the load is an air conditioner, which is classified according to the characteristics of existing air conditioners, such as Figure 6As shown, the final classification characteristics include: cooling / heat pump only, integral / split, fixed frequency / variable frequency, single machine / dual machine in one; the load model categories are: cooling / heat pump only air conditioner, integral / split air conditioner, fixed frequency / variable frequency air conditioner, single machine / dual machine in one air conditioner.

[0071] According to the above load models, analyze their functions and list the motherboards that can be used for all models, such as Figure 2 As shown, it is divided into at least 4 modules, namely the first type, including: filter module, drive module, main control module, rectifier inverter module. Considering the different power supply formats in load application scenarios, the power supply formats of the load include: direct current and alternating current, among which direct current includes DC24V and DC530V, and alternating current includes AC220V and AC380V. The four modules are further subdivided according to the power supply standard of the load, and finally planned into 14 smaller modules, namely the second type, which are suitable for most models and facilitate better universalization, including: DC24V filter module, DC530V filter module, AC220V filter module, AC380V filter module; DC24V drive module, DC530V drive module, AC220V drive module, AC380V drive module; DC24V main control module, AC220V main control module; DC24V-AC220V rectifier inverter module, DC530V-AC220V rectifier inverter module, AC220V-DC24V rectifier inverter module, AC380V-DC24V rectifier inverter module.

[0072] After determining the functional modules of the electric control box, the user's functional requirements for the electric control box are obtained, including: load power supply format, electromagnetic compatibility requirements, and motor type. The functional modules required for the electric control box are determined according to the functional requirements, and this is achieved in the following ways: determining the type of the required main control module according to the load power supply format. When the load power supply format does not match the type of the main control module, a rectifier inverter module is used to provide power for the main control module, and the type of the required rectifier inverter module is determined according to the load power supply format; determining whether a filter module is required according to the electromagnetic compatibility requirements. When the electromagnetic compatibility requirements exceed a preset value, determining that a filter module is required, and determining the type of the required filter module according to the load power supply format; determining whether a drive module is required according to the motor type. When the motor type is a variable frequency motor, determining that a drive module is required, and determining the type of the required drive module according to the load power supply format.

[0073] Specifically, Figure 4 As shown, the assembly combination of the electric control box module includes at least one of the following combinations:

[0074] The first combination includes: a main control module;

[0075] The second combination includes: a filter module and a main control module;

[0076] The third combination includes: a rectifier inverter module and a main control module;

[0077] The fourth combination includes: a filter module, a rectifier inverter module, and a main control module;

[0078] The fifth combination includes: a filter module, a rectifier inverter module, a drive module, and a main control module.

[0079] The connection methods of the above modules have been described in detail in the embodiments of the electric control box and will not be repeated here.

[0080] It should be noted that the modular assembly of the electric control box in the present invention can be freely combined according to customer needs, unit characteristics, size, and functions, and is not limited to the above five combinations.

[0081] Example 3

[0082] Based on the modular assembly method of the electric control box provided in the above embodiment 2, a modular assembly device of the electric control box is further provided in a preferred embodiment 3 of the present invention. Specifically, Figure 7 An optional structural block diagram of the device is shown, such as Figure 7 As shown, the device comprises:

[0083] The first acquisition module 702 is used to obtain the user's functional requirements for the electric control box;

[0084] A first determination module 704, connected to the first acquisition module 702, is used to determine the functional modules required by the electric control box according to the functional requirements;

[0085] The combining module 706 is connected to the first determining module 704 and is used to combine the required functional modules to form an electric control box.

[0086] In the above embodiment, in order to improve the versatility of the electric control box, common modules of the electric control box are provided, and the unit can be freely selected according to customer requirements and spliced ​​together, so as to at least solve the problem of poor commonality of air-conditioning control mainboards in the prior art, improve the degree of commonality, and realize rapid repair and replacement.

[0087] Preferably, it also includes: a second acquisition module, which is used to obtain the load information of the electric control box before obtaining the user's functional requirements for the electric control box, and the load information at least includes the model of the load; a classification module, which is used to classify the load model and determine the function of the load according to the category of the load model; a second determination module, which is used to determine the corresponding functional module according to the function of the load. Among them, the second determination module includes: a first classification unit, which is used to classify the function of the load and determine the first type of the corresponding functional module; a second classification unit, which is used to further subdivide the first type according to the power supply standard of the load and determine the second type of the functional module.

[0088] Furthermore, the functional requirements of the user for the electric control box obtained at least include: load power supply standard, electromagnetic compatibility requirements, and motor type. The first determination module 704 includes: a main control determination unit, which is used to determine the type of the main control module required according to the load power supply standard. When the load power supply standard does not match the type of the main control module, a rectifier inverter module is used to provide power to the main control module, and the type of the rectifier inverter module required is determined according to the load power supply standard; a filter determination unit, which is used to determine whether a filter module is required according to the electromagnetic compatibility requirements. When the electromagnetic compatibility requirements exceed the preset value, it is determined that a filter module is required, and the type of the filter module required is determined according to the load power supply standard; a drive determination unit, which is used to determine whether a drive module is required according to the motor type. When the motor type is a variable frequency motor, it is determined that a drive module is required, and the type of the drive module required is determined according to the load power supply standard.

[0089] Preferably, the combination module 706 includes: a splicing unit for splicing the functional modules required by the determined electric control box, wherein the functional modules all adopt a unified plug-in mode; a combination unit for combining the spliced ​​functional modules with the body of the electric control box to form the electric control box.

[0090] Regarding the device in the above embodiment, the specific manner in which each unit and module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0091] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0092] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A modular assembly method for an electric control box, characterized in that: include: Obtain the user's functional requirements for the electric control box; Determine the functional modules required by the electric control box according to the functional requirements; Combining the required functional modules to form the electric control box; Before obtaining the user's functional requirements for the electric control box, it also includes: Acquire load information of the electric control box, wherein the load information at least includes a load model; Classifying the load models, and determining the function of the load according to the load model categories; Determine a corresponding functional module according to the function of the load; Determining a corresponding functional module according to the function of the load includes: Classifying the functions of the load and determining a first type of a corresponding functional module; Then, the first type is subdivided according to the power supply standard of the load to determine the second type of the functional module; The obtained user's functional requirements for the electric control box at least include: load power supply standard, electromagnetic compatibility requirements, and motor type; The step of determining the functional modules required by the electric control box according to the functional requirements includes: Determine the type of the main control module required according to the load power supply standard; when the load power supply standard does not match the type of the main control module, use a rectifier inverter module to provide power for the main control module, and determine the type of the rectifier inverter module required according to the load power supply standard; Determining whether a filter module is needed according to the electromagnetic compatibility requirement, determining that the filter module is needed when the electromagnetic compatibility requirement exceeds a preset value, and determining the type of the filter module needed according to the load power supply standard; Determine whether a drive module is required according to the motor type. When the motor type is a variable frequency motor, determine that the drive module is required, and determine the type of the required drive module according to the load power supply standard.

2. The method according to claim 1, characterized in that The load is an air conditioner, and the types of load models are: cooling / heat pump air conditioner, integral / split air conditioner, fixed frequency / variable frequency air conditioner, single-unit / dual-unit integrated air conditioner.

3. The method according to claim 2, characterized in that The first type of functional modules at least includes: a filter module, a drive module, a main control module, and a rectifier and inverter module; The power supply modes of the load include: direct current and alternating current, wherein the direct current includes DC24V and DC530V, and the alternating current includes AC220V and AC380V.

4. The method according to claim 3, characterized in that The second type of the functional module includes at least: DC24V filter module, DC530V filter module, AC220V filter module, AC380V filter module; DC24V drive module, DC530V drive module, AC220V drive module, AC380V drive module; DC24V main control module, AC220V main control module; DC24V-AC220V rectifier inverter module, DC530V-AC220V rectifier inverter module, AC220V-DC24V rectifier inverter module, AC380V-DC24V rectifier inverter module.

5. The method according to claim 1, characterized in that The functional modules are combined to form the electric control box, including: Splicing the functional modules required by the determined electric control box, wherein the functional modules all adopt a unified plug-in mode; The spliced ​​functional modules are combined with the box body of the electric control box to form the electric control box.

6. The method according to any one of claims 1 to 5, characterized in that: The functional modules all communicate using CAN signals.

7. A modular assembly device for an electric control box, characterized in that: include: The first acquisition module is used to obtain the user's functional requirements for the electric control box; A first determining module, used to determine the functional modules required by the electric control box according to the functional requirements; A combination module, used to combine the required functional modules to form the electric control box; The second acquisition module is used to obtain the load information of the electric control box before obtaining the user's functional requirements for the electric control box, and the load information at least includes the load model; the classification module is used to classify the load model and determine the function of the load according to the load model category; The second determination module is used to determine the corresponding functional module according to the function of the load; wherein the second determination module includes: a first classification unit, used to classify the function of the load and determine the first type of the corresponding functional module; a second classification unit, used to further subdivide the first type according to the power supply standard of the load and determine the second type of the functional module; The functional requirements of the user for the electric control box obtained include at least: load power supply standard, electromagnetic compatibility requirements, and motor type; The first determination module includes: a main control determination unit, which is used to determine the type of the main control module required according to the load power supply standard. When the load power supply standard does not match the type of the main control module, a rectifier inverter module is used to provide power for the main control module, and the type of the rectifier inverter module required is determined according to the load power supply standard; a filter determination unit, which is used to determine whether a filter module is required according to electromagnetic compatibility requirements. When the electromagnetic compatibility requirements exceed a preset value, it is determined that a filter module is required, and the type of the filter module required is determined according to the load power supply standard; a drive determination unit, which is used to determine whether a drive module is required according to the motor type. When the motor type is a variable frequency motor, it is determined that a drive module is required, and the type of the drive module required is determined according to the load power supply standard.

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