Filtering assembly parameter determination method for wireless charging of new energy automobile and filtering assembly

Abstract

The invention provides a method for determining parameters of a filtering assembly for wireless charging of a new energy automobile and the filtering assembly, belongs to the technical field of electrical equipment, and solves the performance problem of the new energy automobile in a wireless charging state. The method comprises the following steps: acquiring basic index parameters of the filtering assembly for wireless charging of the new energy automobile in a wireless charging state; according to the basic index parameters, obtaining operation state data of the filtering assembly in the wireless charging state; obtaining magnetic ring index parameters of a plurality of magnetic rings of the filtering assembly according to the basic index parameters and the operation state data; and obtaining preparation parameters of the filtering assembly according to the magnetic ring index parameters of the plurality of magnetic rings of the filtering assembly and the wireless charging operation parameters. According to the scheme, the filtering assembly meeting the wireless charging application requirement of the new energy automobile is obtained by accurately controlling the parameters of the magnetic ring, and the qualified rate of the filtering assembly product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a method for determining parameters of a filter component for wireless charging of a new energy vehicle and a filter component. Background Art

[0002] The filter component is the core device that ensures that new energy vehicles will not interfere with on-board electronic equipment or external power grids during wireless charging. The filter component works in conjunction with the power conversion circuit, resonant coil, etc., and assumes the core function of suppressing conducted and radiated interference. It can control the noise source, filter in frequency bands, and effectively filter out differential and common-mode noise on the power line.

[0003] At present, when determining the preparation parameters of the filter components, especially the magnetic ring parameters, they are usually set based on empirical values. However, the limitations of this setting method that relies on empirical values ​​are becoming increasingly prominent. First, empirical values ​​are often based on past technical levels and application scenarios, and may not accurately reflect the development trends of current and future technologies. With the continuous innovation of new energy vehicle technology, new materials and new processes emerge in an endless stream, and these changes directly affect the performance requirements and preparation conditions of the filter components. For example, the application of new magnetic materials may require more precise adjustments to the magnetic ring parameters to achieve the best filtering effect. Secondly, the needs of some special working conditions and new application scenarios are becoming increasingly prominent. For example, in high-speed new energy vehicles, the filter components need to withstand higher electromagnetic interference pressure; in autonomous driving systems, the performance requirements for filter components are more stringent, and any slight electromagnetic interference may affect the stability and safety of the system. These special needs obviously exceed the scope of traditional empirical values, and a more scientific and accurate parameter setting method is urgently needed. Summary of the invention

[0004] The present invention provides a method for determining parameters of a filter component for wireless charging of a new energy vehicle and a filter component, which solves the performance problem of the new energy vehicle in a wireless charging state.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] An embodiment of the present invention provides a method for determining parameters of a filter component for wireless charging of a new energy vehicle, comprising:

[0007] Obtain basic index parameters of a filter assembly for wireless charging of new energy vehicles in a wireless charging state; the filter assembly includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on their outer jackets, the first copper bar branch is provided with a plurality of second-type magnetic rings on its outer jackets, and the second copper bar branch is provided with a plurality of third-type magnetic rings on its outer jackets; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring;

[0008] According to the basic indicator parameters, the operating state data of the filter component in the wireless charging state is obtained;

[0009] According to the basic index parameters and the operating status data, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly;

[0010] According to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters, the preparation parameters of the filter assembly are obtained.

[0011] Optionally, obtain basic index parameters of the filter component used for wireless charging of new energy vehicles in the wireless charging state, including:

[0012] From a design model of a filter component for wireless charging of a new energy vehicle, basic index parameters of the filter component are extracted, wherein the basic index parameters include at least one of size data, passband bandwidth data, rated current data, and rated voltage data of the filter component.

[0013] Optionally, obtaining the operating status data of the filter component in the wireless charging state according to the basic indicator parameter includes:

[0014] According to the passband bandwidth data, obtaining insertion loss data of the filter component in a wireless charging state;

[0015] According to the insertion loss data, impedance data of the filter component in the wireless charging state is obtained.

[0016] Optionally, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly according to the basic index parameters and the operating status data includes:

[0017] According to the size data of the filter assembly, the size data of multiple magnetic rings of the filter assembly are obtained;

[0018] According to the insertion loss data and impedance data, magnetic ring index parameters of multiple magnetic rings of the filter component are obtained.

[0019] Optionally, obtaining the size data of multiple magnetic rings of the filter assembly according to the size data of the filter assembly includes:

[0020] according to

[0021] , get the outer radius data of the i-th type magnetic ring;

[0022] according to

[0023] , get the inner radius data of the i-th type magnetic ring;

[0024] according to

[0025] , get the length data of the i-th type magnetic ring;

[0026] Among them, r i1 is the outer radius data of the i-th type magnetic ring, r i2 is the inner radius data of the i-th type magnetic ring, l i is the length data of the i-th type magnetic ring, L i is the length of the i-th copper bar branch, M i is the width of the i-th copper bar branch, N i is the height of the i-th copper bar branch, min(L i , M i , N i ) is the minimum value of the length, width and height of the i-th copper busbar branch, i=1, 2, 3.

[0027] Optionally, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly according to the insertion loss data and the impedance data includes:

[0028] According to the impedance data, the inductance data of the magnetic ring of the filter component is obtained;

[0029] according to: , obtain the magnetic permeability data of the magnetic ring of the filter component;

[0030] Obtaining parameter data of multiple magnetic rings of the filter assembly according to the insertion loss data, impedance data and magnetic permeability data;

[0031] Among them, μ r is the magnetic permeability data of the magnetic ring of the filter component; L is the inductance data of the magnetic ring of the filter component; μ0 is the vacuum magnetic permeability; N is the number of winding turns, N=1; l m is the length of the magnetic circuit; A is the cross-sectional area of ​​the magnetic ring.

[0032] Optionally, obtaining the preparation parameters of the filter assembly according to the magnetic ring index parameters of the plurality of magnetic rings of the filter assembly and the wireless charging operation parameters includes:

[0033] According to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters, the basic index parameters of the filter assembly are adjusted to obtain the preparation parameters of the filter assembly.

[0034] The embodiment of the present invention also provides a device for determining parameters of a filter component for wireless charging of a new energy vehicle, comprising:

[0035] An acquisition module is used to obtain basic index parameters of a filter component for wireless charging of new energy vehicles in a wireless charging state; the filter component includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on the outer jacket, the first copper bar branch is provided with a plurality of second-type magnetic rings on the outer jacket, and the second copper bar branch is provided with a plurality of third-type magnetic rings on the outer jacket; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring;

[0036] A processing module is used to obtain operating status data of the filter component in a wireless charging state according to the basic indicator parameters; obtain magnetic ring indicator parameters of multiple magnetic rings of the filter component according to the basic indicator parameters and the operating status data; and obtain preparation parameters of the filter component according to the magnetic ring indicator parameters of multiple magnetic rings of the filter component and wireless charging operating parameters.

[0037] An embodiment of the present invention further provides a computing device, comprising: a processor and a memory storing a computer program, wherein the computer program executes the above method when executed by the processor.

[0038] An embodiment of the present invention further provides a filter component, which is manufactured according to the preparation parameters of the filter component for a new energy vehicle in the above method.

[0039] The above solution of the present invention includes at least the following beneficial effects:

[0040] The scheme of the present invention obtains the basic index parameters of the filter assembly for wireless charging of new energy vehicles in the wireless charging state; obtains the operating state data of the filter assembly in the wireless charging state according to the basic index parameters; obtains the magnetic ring index parameters of multiple magnetic rings of the filter assembly according to the basic index parameters and the operating state data; obtains the preparation parameters of the filter assembly according to the magnetic ring index parameters of multiple magnetic rings of the filter assembly and the wireless charging operating parameters. The scheme obtains the filter assembly that meets the application requirements of wireless charging of new energy vehicles through the precise control of the magnetic ring parameters, thereby improving the performance and qualified rate of the filter assembly product. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a flow chart of a method for determining parameters of a filter component for wireless charging of a new energy vehicle provided by an embodiment of the present invention;

[0042] Figure 2 It is a structural diagram of a device for determining parameters of a filter component for wireless charging of a new energy vehicle provided by an embodiment of the present invention;

[0043] Figure 3 It is a schematic diagram of the structure of a computing device provided in an embodiment of the present invention.

[0044] Figure 4 is a structural diagram of a filter assembly for wireless charging of new energy vehicles provided by an embodiment of the present invention;

[0045] Among them, 1. the main body of the first copper bar; 2. the branch of the first copper bar; 3. the branch of the second copper bar; 4. the first type of magnetic ring; 5. the second type of magnetic ring; 6. the third type of magnetic ring; 7. the main body of the second copper bar. DETAILED DESCRIPTION

[0046] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0047] like Figure 1 As shown, an embodiment of the present invention provides a method for determining parameters of a filter component for wireless charging of a new energy vehicle, comprising:

[0048] Step 11, obtaining basic index parameters of the filter component for wireless charging of new energy vehicles in the wireless charging state; the filter component includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on the outer jacket, the first copper bar branch is provided with a plurality of second-type magnetic rings on the outer jacket, and the second copper bar branch is provided with a plurality of third-type magnetic rings on the outer jacket; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring;

[0049] Step 12, obtaining the operating state data of the filter component in the wireless charging state according to the basic indicator parameters;

[0050] Step 13, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly according to the basic index parameters and the operating status data;

[0051] Step 14, obtaining preparation parameters of the filter assembly according to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters.

[0052] In this embodiment, the filter assembly is mainly composed of a first copper bar body, a second copper bar body, a first copper bar branch integrally formed with the first copper bar body, and a second copper bar branch integrally formed with the second copper bar body. This one-piece design helps to ensure the stability and continuity of current transmission and reduce the resistance and energy loss caused by too many connection points. Among them, the copper bar body, as the main channel for current transmission, carries most of the current; the first and second copper bar branches can shunt and adjust the current according to the specific circuit design and filtering requirements to achieve better filtering effect; the first type of magnetic ring is sleeved outside the copper bar body, and the number is multiple. Its inner diameter is larger than the second type of magnetic ring and the third type of magnetic ring. The larger inner diameter enables the first type of magnetic ring to adapt to the size of the copper bar body, and the setting of multiple magnetic rings can enhance the suppression of the magnetic field generated by the current on the copper bar body. The second type of magnetic ring is sleeved outside the first copper bar branch, and multiple second type magnetic rings work together to filter the current on the first copper bar branch. The third type of magnetic ring is sleeved outside the second copper bar branch, and multiple third type magnetic rings can filter the current on the second copper bar branch.

[0053] The basic indicator parameters include current parameters, voltage parameters, frequency parameters and spatial size parameters of the filter components. Among them, the current parameters include the rated current, maximum current, current fluctuation range, etc. during charging; the voltage parameters include the charging voltage, voltage stability, etc. The stability of the voltage will affect the normal operation of the filter components. Too high or too low voltage may lead to a decrease in the filtering effect; the frequency parameters include the current frequency involved in the wireless charging process. Different frequencies may require different filtering strategies.

[0054] By analyzing the basic indicator parameters, the operating status data of the filter component in the wireless charging state can be obtained. The operating status data includes magnetic field data and power loss data. Among them, by analyzing the magnetic field data, the filtering effect of the magnetic ring can be evaluated and the power loss of the filter component during the charging process can be calculated, which helps to evaluate the efficiency of the filter component and determine whether there is abnormal energy loss.

[0055] By analyzing the basic index parameters and operating status data, we can obtain the index parameters of the magnetic rings of the filter components, including magnetic permeability and magnetic field strength, etc. Among them, the magnetic permeability reflects the response ability of the magnetic ring to the magnetic field. Different magnetic permeabilities are suitable for different frequency ranges. According to the frequency parameters and magnetic field data during charging, the magnetic ring with appropriate magnetic permeability can be selected; when the magnetic flux density in the magnetic ring reaches the saturation value, the filtering effect of the magnetic ring will drop significantly. Therefore, it is necessary to determine the saturation magnetic flux density of the magnetic ring according to the current and magnetic field strength during charging to avoid magnetic ring saturation.

[0056] According to the magnetic ring index parameters and wireless charging operation parameters, the preparation parameters can be determined, including: magnetic ring material and magnetic ring size and quantity. Among them, the appropriate magnetic ring material is selected according to the index parameters such as the magnetic permeability, saturation magnetic flux density and Curie temperature of the magnetic ring. Common magnetic ring materials include ferrite, Permalloy, etc. Different materials have different performance characteristics; the size and quantity of the magnetic ring are determined according to the structure of the filter component and the filtering requirements. For example, for larger currents and stronger magnetic field interference, it may be necessary to increase the number of magnetic rings or select larger magnetic rings.

[0057] The above technical solution of the present invention obtains a filter component that meets the application requirements of wireless charging of new energy vehicles by accurately controlling the parameters of the magnetic ring, thereby improving the performance and qualification rate of the filter component product.

[0058] In an optional embodiment of the present invention, step 11 may include:

[0059] Step 111, extracting basic index parameters of the filter component from the design model of the filter component for wireless charging of the new energy vehicle, wherein the basic index parameters include at least one of size data, passband bandwidth data, rated current data and rated voltage data of the filter component.

[0060] In this embodiment, the basic index parameters of the filter component can be obtained by searching and querying the design model of the new energy vehicle; the design model of the new energy vehicle is created based on CAD (computer-aided design) software, and the specific parameters of each component of the filter component are recorded in the model, such as the size data, passband bandwidth data, rated current data, rated voltage data, etc. of the filter component; wherein, the size data of the filter component includes the type of copper bar, the length of each type of copper bar, the length, width and height data of the filter component as a whole, etc.; the passband bandwidth refers to the frequency range allowed to pass through the filter component. In new energy vehicles, different power systems and components have different requirements for frequency response. Therefore, it is necessary to determine the passband bandwidth of the filter component according to the specific application scenarios of the new energy vehicle (such as battery charging, motor drive, etc.) to ensure that it can effectively filter out unwanted frequency components; the rated current refers to the maximum current value that the filter component can withstand under normal working conditions; the selection of this parameter is directly related to the thermal management, electrical safety and long-term reliability of the filter component. The rated voltage refers to the maximum voltage value that the filter component can withstand under normal working conditions. Similar to the rated current, the selection of the rated voltage is also based on factors such as the voltage level, safety standards and insulation performance of the power system of the new energy vehicle. Ensuring that the rated voltage of the filter components meets or exceeds the maximum voltage requirement in actual applications is the key to ensuring safe operation of the system.

[0061] In an optional embodiment of the present invention, step 12 may include:

[0062] Step 121, obtaining insertion loss data of the filter component in a wireless charging state according to the passband bandwidth data;

[0063] Step 122: Obtain impedance data of the filter component in a wireless charging state according to the insertion loss data.

[0064] In this embodiment, firstly, the passband bandwidth data, stopband attenuation and standard limit are determined through the frequency range allowed to pass through the filter in the design model of the new energy vehicle; and according to the noise type (common mode / differential mode), LC, π type, T type and other structures are selected for the filter; the initial values ​​of inductance and capacitance are determined by the cut-off frequency formula; and then the loss value of each frequency point is calculated to obtain the insertion loss data of the filter component, wherein the insertion loss data is the ratio of the load power before and after the filter is connected, and the expression is:

[0065]

[0066] Where IL is the insertion loss, P in is the load power before the filter is connected, P out is the load power after the filter is connected, S 21 is the transmission coefficient;

[0067] Insertion loss is closely related to the input / output impedance matching of the filter. If the source impedance, load impedance and filter impedance do not match, reflection will occur, reducing the filtering efficiency.

[0068] according to:

[0069]

[0070] Get the reflection coefficient of the filter component, where Γ is the reflection coefficient, Z0 is the system characteristic impedance, usually taken as 50Ω, and Z filter is the filter impedance; the reflection coefficient is the first element S in the filter's S parameter 11 , that is, Γ = S 11 According to S 11 and S 21 Get the S parameters of the filter (S 11 , 1, S 21 , 1),

[0071] according to:

[0072]

[0073] The impedance data of the filter component is obtained, where Z is the impedance of the filter component and I is the unit matrix.

[0074] In an optional embodiment of the present invention, step 13 may include:

[0075] Step 131, obtaining the size data of multiple magnetic rings of the filter assembly according to the size data of the filter assembly;

[0076] Step 132, obtaining magnetic ring index parameters of multiple magnetic rings of the filter component according to the insertion loss data and the impedance data.

[0077] In this embodiment, the size data of multiple magnetic rings of the filter assembly are obtained according to the size data of the filter assembly, including:

[0078] according to

[0079] , get the outer radius data of the i-th type magnetic ring;

[0080] according to

[0081] , get the inner radius data of the i-th type magnetic ring;

[0082] according to

[0083] , get the length data of the i-th type magnetic ring;

[0084] according to

[0085] , get the number of magnetic rings of type i;

[0086] Among them, r i1 is the outer radius data of the i-th type magnetic ring, r i2 is the inner radius data of the i-th type magnetic ring, l i is the length data of the i-th type magnetic ring, L i is the length of the i-th copper bar branch, M i is the width of the i-th copper bar branch, N i is the height of the i-th copper bar branch, min(L i , M i , N i ) is the minimum length, width and height of the i-th copper bar branch, i=1, 2, 3; n i is the number of magnetic rings of type i, and F() is the floor rounding function.

[0087] According to the insertion loss data and impedance data, magnetic ring index parameters of multiple magnetic rings of the filter assembly are obtained, including:

[0088] According to the impedance data, the inductance data of the magnetic ring of the filter component is obtained;

[0089] according to: , obtain the magnetic permeability data of the magnetic ring of the filter component;

[0090] Among them, μ r is the magnetic permeability data of the magnetic ring of the filter component; L is the inductance data of the magnetic ring of the filter component; μ0 is the vacuum magnetic permeability; N is the number of winding turns, N=1; l m is the length of the magnetic circuit; A is the cross-sectional area of ​​the magnetic ring.

[0091] according to:

[0092] B=μ0μ r H, obtain the magnetic induction intensity of the magnetic ring of the filter component;

[0093] Among them, H is the magnetic field intensity, B is the magnetic induction intensity;

[0094] The parameter data of the magnetic ring is then determined through the magnetic induction intensity, magnetic permeability data and impedance data to determine the material used to make the magnetic ring; specifically, the determination can be made by querying the parameter table of the magnetic material.

[0095] Table 1 Parameters of magnetic materials

[0096]

[0097] In an optional embodiment of the present invention, step 14 may include:

[0098] Step 141: According to the magnetic ring index parameters of the plurality of magnetic rings of the filter assembly and the wireless charging operation parameters, the basic index parameters of the filter assembly are adjusted to obtain the preparation parameters of the filter assembly.

[0099] In the above-mentioned embodiments of the present invention, when designing the structure of the filter component for wireless charging of new energy vehicles, the inductance of the filter component can be changed by adjusting the number, shape and arrangement of the magnetic rings according to the operating frequency and output power of the wireless charging system, thereby meeting the needs of the wireless charging system; the energy loss and filtering effect can be controlled by adjusting the impedance value, thereby improving the performance of the filter component during wireless charging.

[0100] like Figure 2 As shown, the embodiment of the present invention also provides a device 20 for determining parameters of a filter component for wireless charging of a new energy vehicle, comprising:

[0101] An acquisition module 21 is used to obtain basic index parameters of a filter component for wireless charging of new energy vehicles in a wireless charging state; the filter component includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on the outer jacket, the first copper bar branch is provided with a plurality of second-type magnetic rings on the outer jacket, and the second copper bar branch is provided with a plurality of third-type magnetic rings on the outer jacket; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring;

[0102] The processing module 22 is used to obtain the operating status data of the filter component in the wireless charging state according to the basic indicator parameters; obtain the magnetic ring indicator parameters of multiple magnetic rings of the filter component according to the basic indicator parameters and the operating status data; and obtain the preparation parameters of the filter component according to the magnetic ring indicator parameters of multiple magnetic rings of the filter component and the wireless charging operating parameters.

[0103] Optionally, the acquisition module 21 is specifically used for:

[0104] From a design model of a filter component for wireless charging of a new energy vehicle, basic index parameters of the filter component are extracted, wherein the basic index parameters include at least one of size data, passband bandwidth data, rated current data, and rated voltage data of the filter component.

[0105] Optionally, the processing module 22 is specifically used for:

[0106] According to the passband bandwidth data, obtaining insertion loss data of the filter component in a wireless charging state;

[0107] According to the insertion loss data, impedance data of the filter component in the wireless charging state is obtained.

[0108] Optionally, the processing module 22 is further specifically configured to:

[0109] According to the size data of the filter assembly, the size data of multiple magnetic rings of the filter assembly are obtained;

[0110] According to the insertion loss data and impedance data, magnetic ring index parameters of multiple magnetic rings of the filter component are obtained.

[0111] Optionally, obtaining the size data of multiple magnetic rings of the filter assembly according to the size data of the filter assembly includes:

[0112] according to

[0113] , get the outer radius data of the i-th type magnetic ring;

[0114] according to

[0115] , get the inner radius data of the i-th type magnetic ring;

[0116] according to

[0117] , get the length data of the i-th type magnetic ring;

[0118] Among them, r i1 is the outer radius data of the i-th type magnetic ring, r i2 is the inner radius data of the i-th type magnetic ring, l i is the length data of the i-th type magnetic ring, L i is the length of the i-th copper bar branch, M i is the width of the i-th copper bar branch, N i is the height of the i-th copper bar branch, min(L i , M i , N i ) is the minimum length, width and height of the i-th copper bar branch, i=1, 2, 3.

[0119] Optionally, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly according to the insertion loss data and the impedance data includes:

[0120] According to the impedance data, the inductance data of the magnetic ring of the filter component is obtained;

[0121] according to: , obtain the magnetic permeability data of the magnetic ring of the filter component;

[0122] Obtaining parameter data of multiple magnetic rings of the filter assembly according to the insertion loss data, impedance data and magnetic permeability data;

[0123] Among them, μ r is the magnetic permeability data of the magnetic ring of the filter component; L is the inductance data of the magnetic ring of the filter component; μ0 is the vacuum magnetic permeability; N is the number of winding turns, N=1; l m is the length of the magnetic circuit; A is the cross-sectional area of ​​the magnetic ring.

[0124] Optionally, the processing module 22 is further specifically configured to:

[0125] According to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters, the basic index parameters of the filter assembly are adjusted to obtain the preparation parameters of the filter assembly.

[0126] It should be noted that the device is a device corresponding to the above method, and all implementation methods in the above method embodiment are applicable to this embodiment and can achieve the same technical effect.

[0127] like Figure 3 As shown, an embodiment of the present invention further provides a computing device 30, including a processor 31, a memory 32, a program or instruction stored in the memory 32 and executable on the processor 31, and when the program or instruction is executed by the processor 31, each process of the above-mentioned method for determining the parameters of the filter component for wireless charging of new energy vehicles is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here. It should be noted that the computing device in the embodiment of the present invention includes the above-mentioned mobile electronic device and non-mobile electronic device.

[0128] like Figure 4 As shown, an embodiment of the present invention further provides a filter component, and the filter component is made by the preparation parameters obtained in the above method.

[0129] In this embodiment, a filter assembly for wireless charging of new energy vehicles is manufactured according to the parameters of the filter assembly determined by the above method, comprising a first copper bar body 1, a second copper bar body 7, and a first copper bar branch 2 integrally formed with the first copper bar body 1, and a second copper bar branch 3 integrally formed with the second copper bar body 7, the first copper bar body 1 and the second copper bar body 7 are provided with a plurality of first-type magnetic rings 4, the first copper bar branch 2 is provided with a plurality of second-type magnetic rings 5, and the second copper bar branch 3 is provided with a plurality of third-type magnetic rings 6; the inner diameter of the first-type magnetic ring 4 is larger than the second-type magnetic ring 5 and the third-type magnetic ring 6; the first copper bar body 1 and the second copper bar body 7 are separated and insulated by a plastic spacer, and the magnetic rings are inserted after being fixed with glue during assembly; by accurately controlling the parameters of the magnetic rings, a filter assembly that meets the application requirements of wireless charging of new energy vehicles is obtained, and the performance and qualified rate of the filter assembly product during wireless charging are improved.

[0130] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0131] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0132] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0133] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0134] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0135] Stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, disk or optical disk, etc., various media that can store program codes.

[0136] In addition, it should be pointed out that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is understandable that all or any steps or components of the method and apparatus of the present invention can be implemented in hardware, firmware, software or a combination thereof in any computing device (including processors, storage media, etc.) or a network of computing devices, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0137] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device can be a well-known general-purpose device. Therefore, the purpose of the present invention can also be achieved by simply providing a program product containing a program code for implementing a method or device. That is to say, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. In addition, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order. Some steps can be performed in parallel or independently of each other.

[0138] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for determining parameters of a filter component for wireless charging of a new energy vehicle, characterized in that: include: Obtain basic index parameters of a filter assembly for wireless charging of new energy vehicles in a wireless charging state; the filter assembly includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on their outer jackets, the first copper bar branch is provided with a plurality of second-type magnetic rings on its outer jackets, and the second copper bar branch is provided with a plurality of third-type magnetic rings on its outer jackets; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring; According to the basic indicator parameters, the operating state data of the filter component in the wireless charging state is obtained; According to the basic index parameters and the operating status data, obtaining magnetic ring index parameters of multiple magnetic rings of the filter assembly; According to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters, the preparation parameters of the filter assembly are obtained.

2. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 1, characterized in that: Obtain the basic index parameters of the filter components used for wireless charging of new energy vehicles in the wireless charging state, including: From a design model of a filter component for wireless charging of a new energy vehicle, basic index parameters of the filter component are extracted, wherein the basic index parameters include at least one of size data, passband bandwidth data, rated current data, and rated voltage data of the filter component.

3. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 2, characterized in that: According to the basic indicator parameters, the operating state data of the filter component in the wireless charging state is obtained, including: According to the passband bandwidth data, obtaining insertion loss data of the filter component in a wireless charging state; According to the insertion loss data, impedance data of the filter component in the wireless charging state is obtained.

4. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 3, characterized in that: According to the basic index parameters and the operating status data, magnetic ring index parameters of multiple magnetic rings of the filter assembly are obtained, including: According to the size data of the filter assembly, the size data of multiple magnetic rings of the filter assembly are obtained; According to the insertion loss data and impedance data, magnetic ring index parameters of multiple magnetic rings of the filter component are obtained.

5. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 4, characterized in that: According to the size data of the filter assembly, the size data of multiple magnetic rings of the filter assembly are obtained, including: according to , get the outer radius data of the i-th type magnetic ring; according to , get the inner radius data of the i-th type magnetic ring; according to , get the length data of the i-th type magnetic ring; Among them, r i1 is the outer radius data of the i-th type magnetic ring, r i2 is the inner radius data of the i-th type magnetic ring, l i is the length data of the i-th type magnetic ring, L i is the length of the i-th copper bar branch, M i is the width of the i-th copper bar branch, N i is the height of the i-th copper bar branch, min(L i , M i , N i ) is the minimum length, width and height of the i-th copper bar branch, i=1, 2, 3.

6. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 4, characterized in that: According to the insertion loss data and impedance data, magnetic ring index parameters of multiple magnetic rings of the filter assembly are obtained, including: According to the impedance data, the inductance data of the magnetic ring of the filter component is obtained; according to: , obtain the magnetic permeability data of the magnetic ring of the filter component; Obtaining parameter data of multiple magnetic rings of the filter assembly according to the insertion loss data, impedance data and magnetic permeability data; Among them, μ r is the magnetic permeability data of the magnetic ring of the filter component; L is the inductance data of the magnetic ring of the filter component; μ0 is the vacuum magnetic permeability; N is the number of winding turns, N=1; l m is the length of the magnetic circuit; A is the cross-sectional area of ​​the magnetic ring.

7. The method for determining parameters of a filter component for wireless charging of a new energy vehicle according to claim 1, characterized in that: According to the magnetic ring index parameters of the plurality of magnetic rings of the filter assembly and the wireless charging operation parameters, the preparation parameters of the filter assembly are obtained, including: According to the magnetic ring index parameters of the multiple magnetic rings of the filter assembly and the wireless charging operation parameters, the basic index parameters of the filter assembly are adjusted to obtain the preparation parameters of the filter assembly.

8. A device for determining parameters of a filter component for wireless charging of new energy vehicles, characterized in that: include: An acquisition module is used to obtain basic index parameters of a filter component for wireless charging of new energy vehicles in a wireless charging state; the filter component includes: a first copper bar main body, a second copper bar main body, and a first copper bar branch integrally formed with the first copper bar main body, and a second copper bar branch integrally formed with the second copper bar main body, the first copper bar main body and the second copper bar main body are provided with a plurality of first-type magnetic rings on the outer jacket, the first copper bar branch is provided with a plurality of second-type magnetic rings on the outer jacket, and the second copper bar branch is provided with a plurality of third-type magnetic rings on the outer jacket; the inner diameter of the first-type magnetic ring is greater than that of the second-type magnetic ring and the third-type magnetic ring; A processing module is used to obtain operating status data of the filter component in a wireless charging state according to the basic indicator parameters; obtain magnetic ring indicator parameters of multiple magnetic rings of the filter component according to the basic indicator parameters and the operating status data; and obtain preparation parameters of the filter component according to the magnetic ring indicator parameters of multiple magnetic rings of the filter component and wireless charging operating parameters.

9. A computing device, characterized in that include: A processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to any one of claims 1 to 7 is performed.

10. A filter component, characterized in that: The filter component is made according to the preparation parameters of the new energy vehicle filter component in the method described in any one of claims 1 to 7.

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