Filter, controller and vehicle-mounted charger

Abstract

The utility model belongs to the field of electric automobile charging equipment, and discloses a filter, a controller and a vehicle-mounted charger, and the corresponding control and the vehicle-mounted charger are obtained based on the filter. The filter comprises a filtering module and an electromagnetic shielding shell, shielding bins are arranged in the electromagnetic shielding shell and correspond to filtering grade devices of the filtering module, and the filtering grade devices are embedded into the corresponding shielding bins. According to the utility model, electromagnetic interference between the filtering modules can be shielded, crosstalk between devices with different filtering levels in the same filtering module can be shielded, and the filtering module can adapt to a severe electromagnetic environment. In addition, the utility model has the advantages of high integration level, small occupied space, convenience in installation and excellent heat dissipation performance.

Description

Technical Field

[0001] The utility model belongs to the field of electric vehicle charging equipment, and specifically relates to a filter, a controller and an on-board charger. Background Art

[0002] Electric vehicles require an onboard charger to convert energy between the vehicle's power battery and the power grid. Currently, these chargers often require multiple filters to fulfill different filtering functions. Each filter requires its own installation space and shielding to isolate electromagnetic interference between filters. However, this fails to address crosstalk between components of different filter levels within a single filter. Utility Model Content

[0003] The utility model provides a filter to solve the problem of crosstalk between components of different filtering levels inside the filter.

[0004] The utility model is realized through the following technical solutions:

[0005] A filter comprises a filter module and an electromagnetic shielding shell, wherein each filter-grade component corresponding to the filter module is provided with a shielding compartment in the electromagnetic shielding shell, and the filter-grade component is embedded in the corresponding shielding compartment.

[0006] The filter-level devices are embedded in their respective shielding compartments, and the filter-level devices are isolated from each other, thereby solving the crosstalk problem between the filter-level devices. At the same time, the electromagnetic shielding shell also acts as a barrier to the entire filter module.

[0007] Furthermore, it includes at least two filtering modules.

[0008] Because the filter components of each filter module are embedded in their corresponding shielding compartment, the filter components of the two filter modules are also isolated from each other, effectively isolating the two filter modules from each other, thus preventing crosstalk between the filter modules. Furthermore, compared to installing different filter modules in separate shielding cans, installing them in the same electromagnetic shielding enclosure can reduce installation space and installation times.

[0009] Furthermore, it has three filtering modules: a high-low voltage conversion filter module, a low-voltage input filter module, and an AC slow charging filter module to meet the different filtering requirements of on-board chargers.

[0010] Furthermore, it also includes a circuit board, and the filtering module is integrated and mounted on the circuit board.

[0011] Different filters are integrated on the same circuit board, which has a more compact structure, higher integration and easier installation.

[0012] Furthermore, the circuit board is provided with connection terminals for connecting the filter module to external devices, which facilitates the connection between the filter module and the external devices.

[0013] Furthermore, the depth of the shielding compartment is no less than the maximum height of the filter module, the filter module is embedded in the shielding compartment of the electromagnetic shielding shell, and the circuit board is aligned with the edge of the electromagnetic shielding shell. The alignment of the circuit board with the edge of the electromagnetic shielding shell can seal the shielding compartment and enhance the shielding effect.

[0014] Furthermore, the electromagnetic shielding cover is further included, and the electromagnetic shielding cover is connected to the electromagnetic shielding shell. The electromagnetic shielding shell is enclosed by the electromagnetic shielding cover to enhance the shielding effect.

[0015] Furthermore, the electromagnetic shielding cover and the electromagnetic shielding shell are detachably connected, which is convenient for installation and maintenance.

[0016] Furthermore, the electromagnetic shield includes a cover plate and a panel along its edge. The panel has openings for electrical connection to the circuit board. The panel supports the cover plate, creating a cavity between the cover plate and the circuit board, facilitating heat dissipation. The openings in the panel facilitate wiring between the circuit board and external devices, while also enhancing heat dissipation.

[0017] Furthermore, a first lug is provided on the edge of the enclosure, and a second lug is provided on the edge of the electromagnetic shielding shell for docking with the first lug, and the first and second lugs are connected by a threaded fastener. Using the lug as a connecting part can save material and reduce product volume.

[0018] Furthermore, the electromagnetic shielding shell is made of aluminum alloy, which not only has good electromagnetic shielding performance but also has good heat dissipation performance.

[0019] Furthermore, the shielding chamber is filled with heat-conducting material to improve heat dissipation performance.

[0020] The utility model also provides a controller, comprising the above-mentioned filter.

[0021] The utility model also provides a vehicle-mounted charger, comprising the above-mentioned controller.

[0022] The utility model can not only shield electromagnetic interference between filter modules, but also shield crosstalk between components of different filter levels within the same filter module, and can adapt to harsh electromagnetic environments. The utility model also has the advantages of high integration, small footprint, easy installation, and excellent heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 is a schematic diagram of an exploded view of the filter of Example 2;

[0025] Figure 2 is a bottom view of the circuit board assembly in Example 2;

[0026] Figure 3 This is a schematic diagram of the assembly of the filter in Example 2. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in this application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0028] In order to solve the crosstalk problem between different filter-grade devices inside the filter, the utility model provides a filter, including a filter module and an electromagnetic shielding shell, wherein each filter-grade device corresponding to the filter module in the electromagnetic shielding shell is provided with a shielding chamber, and the filter-grade device is embedded in the corresponding shielding chamber.

[0029] The filter-level devices are embedded in their respective shielding compartments, and the filter-level devices are isolated from each other, thereby solving the crosstalk problem between the filter-level devices. At the same time, the electromagnetic shielding shell also acts as a barrier to the entire filter module.

[0030] Example 1

[0031] In this embodiment, the filter includes two filter modules, each with its own filter-grade components embedded in a corresponding shielding compartment. It also includes an electromagnetic shielding cover that interfaces with the electromagnetic shielding shell, enclosing the shell to enhance shielding effectiveness. The electromagnetic shielding cover and the shell are detachably connected, facilitating installation and maintenance.

[0032] Of course, those skilled in the art can also change the number and type of filter modules as needed, and the shielding compartment of the electromagnetic shielding shell can also be changed accordingly.

[0033] Because the filter components of each filter module are embedded in their corresponding shielding compartment, the filter components of the two filter modules are also isolated from each other, effectively isolating the two filter modules from each other, thus preventing crosstalk between the filter modules. Furthermore, compared to installing different filter modules in separate shielding cans, installing them in the same electromagnetic shielding enclosure can reduce installation space and installation times.

[0034] Example 2

[0035] refer to Figure 1 As shown, in this embodiment, the filter has three filter modules: a high-low voltage conversion filter module 103, a low voltage input filter module 102 and an AC slow charging filter module 101. This meets the different filtering requirements of the on-board charger.

[0036] The circuit board assembly 104 also includes a circuit board, and the filter modules are integrated and mounted on the circuit board 104 to form a circuit board assembly 1. The integration of different filters on the same circuit board provides a more compact structure and a higher level of integration. By inserting the circuit board assembly 1 into the electromagnetic shield housing at once, the three filter modules can be installed simultaneously, making installation more convenient.

[0037] refer to Figure 2 As shown, the circuit board 104 is provided with connection terminals for connecting the filter module to external devices, including a first connection terminal 1042, a second connection terminal 1041, and a third connection terminal 1043 corresponding to the AC slow charging filter module 101, the low voltage input filter module 102, and the high-low voltage conversion filter module 103, respectively. This facilitates the connection between the filter module and the external device.

[0038] The depth of the shielding compartment is no less than the maximum height of the filter module (the height of the component with the largest height dimension in the filter module). The filter module is embedded in the shielding compartment 201 of the electromagnetic shielding case 2, and the circuit board 104 is aligned with the edge of the electromagnetic shielding case 2. The alignment of the circuit board 104 with the edge of the electromagnetic shielding case 2 can seal the shielding compartment 201 and enhance the shielding effect.

[0039] The electromagnetic shielding cover 3 is further included, and the electromagnetic shielding cover 3 is connected to the electromagnetic shielding shell 2. The electromagnetic shielding shell 2 is enclosed by the electromagnetic shielding cover 3, thereby further enhancing the shielding effect.

[0040] refer to Figure 3 As shown, the electromagnetic shield 3 includes a cover plate 302 and a surrounding plate 303 disposed along the edge of the cover plate. The surrounding plate 303 has an opening for electrical connection to the circuit board 104. The surrounding plate 303 supports the cover plate 302, forming a cavity between the cover plate 302 and the circuit board 104 to facilitate heat dissipation.

[0041] The opening in the enclosure 303 facilitates wiring between the circuit board 104 and external devices, while also enhancing heat dissipation. The first and second wiring terminals 1042 and 1041 extend from the openings in the enclosure 303, respectively. The opening 304 at one end of the enclosure 303 facilitates wiring between the circuit board and external devices. The wiring harness passes through the same opening 304, facilitating centralized wiring and enhancing aesthetics.

[0042] The edge of the enclosure is provided with a first lug 301, and the edge of the electromagnetic shielding shell 2 is provided with a second lug 202 for docking with the first lug 301. The first lug 301 and the second lug 202 are connected by threaded fasteners. Using the lugs as the connecting parts can save materials and reduce the product volume.

[0043] The electromagnetic shielding shell 2 is made of aluminum alloy. Aluminum alloy not only has good electromagnetic shielding performance, but also has good heat dissipation performance. The shielding chamber 201 is filled with heat-conducting material to further improve the heat dissipation performance.

[0044] Example 3

[0045] This embodiment provides a controller including the filter of embodiment 1 or embodiment 2.

[0046] The utility model also provides a vehicle-mounted charger, comprising the controller of this embodiment.

[0047] Since the filter has excellent electromagnetic shielding effect, it can effectively improve the filtering effect, thereby improving the charging quality and efficiency.

[0048] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of this application.

Claims

1. A filter, characterized in that: It includes a filter module and an electromagnetic shielding shell. Each filter-level component corresponding to the filter module in the electromagnetic shielding shell is provided with a shielding compartment, and the filter-level component is embedded in the corresponding shielding compartment.

2. The filter according to claim 1, wherein Includes at least two filtering modules.

3. The filter according to claim 2, characterized in that It has three filtering modules: high and low voltage conversion filter module, low voltage input filter module and AC slow charging filter module.

4. The filter according to claim 3, characterized in that It also includes a circuit board, and the filter module is integrally mounted on the circuit board.

5. The filter according to claim 4, characterized in that The circuit board is provided with connection terminals for the filter module to connect to external devices.

6. The filter according to claim 4, characterized in that The depth of the shielding compartment is not less than the maximum height of the filter module. The filter module is embedded in the shielding compartment of the electromagnetic shielding shell, and the circuit board is in contact with the edge of the electromagnetic shielding shell.

7. The filter according to claim 6, characterized in that It also includes an electromagnetic shielding cover, which is connected to the electromagnetic shielding shell.

8. The filter according to claim 7, characterized in that The electromagnetic shielding cover and the electromagnetic shielding shell are detachably connected.

9. The filter according to claim 7, characterized in that The electromagnetic shielding cover comprises a cover plate and a surrounding plate arranged along the edge of the cover plate, wherein the surrounding plate is provided with an opening for electrical connection of a circuit board.

10. The filter according to claim 9, characterized in that A first lug is provided on the edge of the enclosure, and a second lug is provided on the edge of the electromagnetic shielding shell for docking with the first lug. The first lug and the second lug are connected by a threaded fastener.

11. The filter according to claim 6, wherein The electromagnetic shielding shell is made of aluminum alloy.

12. The filter according to claim 6, characterized in that The shielding chamber is filled with heat-conducting material.

13. A controller, characterized in that: The invention comprises the filter according to any one of claims 1 to 12.

14. A vehicle-mounted charger, characterized in that: Comprising the controller of claim 13.

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