Charging device

Abstract

The utility model provides charging equipment, which comprises a charging control assembly, and the charging control assembly comprises a mainboard which is provided with an input terminal, an input processing circuit, a transformer, an output processing circuit and an output terminal which are sequentially connected to form a current path; the control board is provided with a control circuit, the control board is detachably installed on the main board, and a certain angle is formed between the extension direction of the control board and the extension direction of the main board. By adopting the charging equipment, the control panel can be independently tested and maintained when the control circuit breaks down, the height space of the mainboard is fully utilized in structural layout, the plane size of the mainboard is reduced, and the size of the charging equipment is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic circuit, in particular to a charging device. BACKGROUND

[0002] The charging device is used for supplementing the electric energy for various rechargeable batteries or energy storage devices through the internal charging control assembly. In use, the input terminal of the charging control assembly inputs the external power supply, and after the internal processing circuit of the charging control assembly, it is output to the battery or energy storage device to be charged through the output terminal. When the voltages at the input terminal and the output terminal are different, a transformer needs to be set inside the charging device to complete the conversion between high voltage and low voltage. The charging device is internally provided with a control circuit to control the charging process.

[0003] In the existing charging device, each component of the charging control assembly is arranged on the main board of the charging control assembly. When the charging device fails, the entire main board needs to be tested to find the fault location point. When repairing, the entire main board also needs to be repaired or replaced. Therefore, the main board fault test and repair of the charging device are very inconvenient, causing waste of manpower and cost. In addition, the charging control assembly of the existing charging device has many parts, which are all arranged on the plane of the main board, resulting in a large plane size of the main board, and further resulting in a large size of the charging device, which is not conducive to the miniaturization of the charging device. CONTENT OF THE INVENTION

[0004] In view of the problems in the prior art, the purpose of the present application is to provide a charging device which can individually test and repair the control board when the control circuit fails, and fully utilize the height space of the main board in the structural layout, which is conducive to reducing the plane size of the main board and further reducing the size of the charging device.

[0005] The present application provides a charging device, which comprises a charging control assembly, and the charging control assembly comprises:

[0006] a main board provided with an input terminal, an input processing circuit, a transformer, an output processing circuit and an output terminal connected in sequence to form a current path;

[0007] a control board provided with a control circuit, the control board being detachably mounted on the main board, and the extension direction of the control board being arranged at a certain angle with the extension direction of the main board.

[0008] In some embodiments, the input terminal and the input processing circuit are arranged along a first direction, and the transformer, the output processing circuit and the output terminal are arranged along the opposite direction of the first direction;

[0009] The main board comprises a first voltage side region and a second voltage side region arranged along the second direction, the input terminal and the input processing circuit are located in the first voltage side region, the transformer, the output processing circuit and the output terminal are located in the second voltage side region, and the control board is located between the first voltage side region and the second voltage side region.

[0010] In some embodiments, a full-bridge field effect transistor is further arranged on the main board, and the full-bridge field effect transistor is located between the input processing circuit of the first voltage side region and the transformer of the second voltage side region.

[0011] In some embodiments, a first heat sink is further arranged on the main board, and the first heat sink is arranged between the first voltage side region and the second voltage side region and extends along the first direction.

[0012] In some embodiments, the control board is perpendicular to the main board, and the height of the control board is not higher than the height of the first heat sink.

[0013] In some embodiments, the input terminal and the output terminal are arranged on a first side of the main board along the first direction, and two fans are arranged on a second side of the main board along the first direction, and the two fans are arranged in the first voltage side region and the second voltage side region respectively.

[0014] In some embodiments, the input processing circuit comprises an input filter module, a power factor correction module and an input filter capacitor arranged in sequence along the first direction, and the output processing circuit comprises an output rectification module, an output filter capacitor, an output switch module and an output filter inductor arranged in sequence along the opposite direction of the first direction.

[0015] In some embodiments, a driving and power supply board is further arranged, and the driving and power supply board is detachably mounted on the main board, and the extension direction of the driving and power supply board is arranged at an angle with the extension direction of the main board.

[0016] In some embodiments, the input processing circuit comprises a power factor correction module, the power factor correction module comprises a first PFC unit and a second PFC unit, the first PFC unit is arranged on the surface of the main board, the second PFC unit is arranged on a PFC board, the PFC board is arranged above the first PFC unit, and the orthographic projection of the PFC board on the surface of the main board at least partially overlaps the first PFC unit.

[0017] In some embodiments, the output processing circuit comprises an output rectification module, a second heat sink is arranged on the top of the output rectification module, a negative pole line of the second voltage side of the transformer is connected to an output negative terminal in the output terminal through a connecting line, and the connecting line passes over the top end of the second heat sink.

[0018] The charging device provided in the application has the following advantages:

[0019] In the present application, the control circuit is formed on the control board alone, and the control board is detachably arranged with the main board. When the control circuit fails, the control board can be tested and repaired alone. Since the control circuit is a component with a high failure rate in the charging device, arranging the control circuit independently of the main board can effectively reduce the number of times of testing and repairing the overall main board. When the control circuit fails, the control board can be tested, repaired and replaced alone, effectively reducing the manpower, time and cost requirements for maintaining the charging device. In addition, the control board is arranged at an angle with the main board, which can fully utilize the height space of the main board, save the planar space of the main board, and is beneficial to reducing the planar size of the main board, and further reducing the volume of the charging device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0021] Figure 1 is a structural schematic diagram of a charging control assembly of a charging device of the present application;

[0022] Figure 2 is a structural schematic diagram of a charging control assembly of a charging device of an embodiment of the present application;

[0023] Figure 3 is a detailed schematic diagram of a charging control assembly of a charging device of an embodiment of the present application.

[0024] REFERENCE SIGNS:

[0025] 100 main board 11 transformer

[0026] 200 input processing circuit 12 output rectification module

[0027] 120 output processing circuit 121 first output rectification unit

[0028] 1 input terminal 122 second output rectification unit

[0029] 2 input filter module 13 output filter capacitor

[0030] 201 input filter inductor 14 output switching module

[0031] 202 input X capacitor 141 Hall sensor

[0032] 3 power factor correction module 142 output field effect transistor

[0033] 301 PFC current sensor 15 output filter inductor

[0034] 302 PFC inductor 16 output terminal

[0035] 303 PFC field effect transistor 161 output positive terminal

[0036] 4 input filter capacitor 162 output negative terminal

[0037] 5 drive and power board 17 control board

[0038] 6 full-bridge field effect transistor 18 first heat sink

[0039] 7 resonance capacitor 19 input relay

[0040] 8 current transformer 20 rectifier bridge stack

[0041] 9 fan interface 21 fan mounting

[0042] 10 resonance inductor DETAILED DESCRIPTION

[0043] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Any of the terms "or" as used in a description herein is intended to mean "and / or," unless otherwise indicated. Although the terms "upper," "lower," "between," and the like can be used in this disclosure to describe various example features and elements, these terms are used in this disclosure as a convenience to the reader and are not intended to limit the scope of the application to specific orientations or directions. Nothing in this disclosure is to be construed as requiring a specific three-dimensional orientation of structures in order to fall within the scope of the application. Although the terms "first" and "second" can be used herein to describe various features / elements, these features / elements should not be limited by these terms since such terms are generally used to distinguish one feature from another. For example, a first feature could be termed a second feature, and, similarly, a second feature could be termed a first feature without departing from the scope of the application.

[0044] As Figure 1As shown, the application provides a charging device, which comprises a charging control assembly. The charging device can further comprise a shell containing the charging control assembly. The charging control assembly comprises a main board 100 and a control board 17 arranged independently of the main board 100. The main board 100 is provided with an input terminal 1, an input processing circuit 200, a transformer 11, an output processing circuit 120 and an output terminal 16 connected in sequence to form a current path. The control board 17 is provided with a control circuit, and the control board 17 is detachably mounted on the main board 100, and the extension direction of the control board 17 is arranged at an angle with the extension direction of the main board 100. The extension direction of the control board 17 is the surface extension direction of the control board 17, and the extension direction of the main board 100 is the surface extension direction of the main board 100. In this embodiment, the angle between the extension direction of the control board 17 and the extension direction of the main board 100 is 90°, that is, the control board 17 is arranged perpendicular to the main board 100. However, the application is not limited thereto, and in other alternative embodiments, an acute angle can be formed between the control board 17 and the main board 100, so that the control board 17 is arranged inclined relative to the main board 100, which also belongs to the protection scope of the application. The control circuit is used to control the operation of each component of the charging control assembly, such as controlling the on-off of the switch in the output processing circuit 120, controlling the output charging current and voltage, etc., which comprises control chips, sampling resistors, operational amplifiers and other components.

[0045] In the application, the control circuit is separately formed on the control board 17, and the control board 17 is detachably arranged with the main board 100, the control board 17 and the main board 100 form two independent modules, when the control circuit fails, the control board 17 can be tested and repaired separately, since the control circuit is a component with high failure rate in the charging device, arranging the control circuit independently of the main board 100 can effectively reduce the number of tests and repairs of the overall main board 100, when the control circuit fails, the control board 17 can be tested, repaired and replaced separately, which effectively reduces the manpower, time and cost requirements for maintaining the charging device. In addition, the control board 17 is arranged at an angle with the main board 100, which can fully utilize the height space (longitudinal space) of the main board 100, saves the plane space of the main board 100, is beneficial to reducing the plane size of the main board 100, and further reduces the volume of the charging device.

[0046] In this embodiment, the connection mode of the control board 17 and the main board 100 can be a plug-in connection structure. A slot is arranged on the main board 100, one end of the control board 17 is provided with a plug pin, the plug pin is inserted into the slot, then one or more screws are used to fix the main board 100 and the control board 17, and finally the plug pin is welded on the main board 100 at the back of the main board 100.

[0047] The following will be described in combination with Figures 1 to 3The implementation of the charging control assembly of the charging device is specifically described in an embodiment. In this embodiment, the x direction in the figure is defined as the first direction, i.e., the length direction of the main board 100, the y direction in the figure is defined as the second direction, i.e., the width direction of the main board 100, and the direction perpendicular to the x direction and the y direction is defined as the height direction. The extension direction of the main board 100 is the plane direction formed by the first direction and the second direction, and the extension direction of the control board 17 is the plane direction formed by the first direction and the vertical direction, i.e., the direction perpendicular to the paper.

[0048] As shown in Figure 1 , in this embodiment, the input terminals 1 and the input processing circuit 200 are arranged along the first direction, and the transformer 11, the output processing circuit 120, and the output terminal 16 are arranged along the opposite direction of the first direction. The input terminals 1 and the output terminal 16 are located on the first side (the left side of the main board 100 in Figure 1 ) of the main board 100 along the first direction. The main board 100 includes a first voltage side region (the lower side region of the main board 100 in Figure 1 ) and a second voltage side region (the upper side region of the main board 100 in Figure 1 ) arranged along the second direction. The input terminals 1 and the input processing circuit 200 are located in the first voltage side region. The transformer 11, the output processing circuit 120, and the output terminal 16 are located in the second voltage side region, and the control board 17 is located between the first voltage side region and the second voltage side region. In this embodiment, the main board 100 is used to convert high-voltage input into low-voltage output, so the first voltage side region is a high-voltage side region, and the second voltage side region is a low-voltage side region. Figure 1 The direction of the arrow in indicates the flow direction of the current in the charging control assembly. The arrangement of the various components in the charging control assembly causes the internal current to flow in a U shape, which is beneficial for reducing the influence of EMI (Electromagnetic Interference) and facilitating the arrangement of the wires, and the overall main board 100 layout is more concise. The charging device is, for example, a high-frequency starting charging device that inputs alternating current, and the transformer 11 therein is a high-frequency transformer 11, but the application is not limited thereto. In other alternative embodiments, the charging device can also be a low-frequency charging device.

[0049] Figure 2As shown, the charging control assembly further comprises a drive and power board 5 which is detachably mounted on the main board 100 and arranged at an angle to the extension direction of the main board 100. The drive and power board 5 is provided with a drive and power circuit for converting the input power into power for supplying each component of the charging control assembly. The drive and power board 5 is also arranged independently of the main board 100, and arranged at an angle to the main board 100 (in this embodiment, the drive and power board 5 is perpendicular to the main board 100), which is also conducive to saving the planar space of the main board 100, effectively utilizing the height space of the main board 100, reducing the planar size of the main board 100, and further reducing the volume of the charging device. In addition, when the drive and power circuit fails, the drive and power circuit can be tested, repaired and replaced individually, further reducing the manpower, time and cost requirements for maintaining the charging device. The connection mode of the drive and power board 5 and the main board 100 can be a plug-in connection mode, after inserting the pins of the drive and power board 5 into the slots of the main board 100, using one or more screws to fix the drive and power board 5 to the main board 100, and then welding the pins on the main board 100 at the back of the main board 100.

[0050] As shown in FIG. 1, the charging device comprises a main board 100, a charging control assembly 200, a transformer 11, a rectifier 12, an output filter capacitor 13, an output switch module 14, an output terminal 15, a drive and power board 5, and a full-bridge MOSFET 6. Figure 2 As shown in FIG. 2, the input processing circuit comprises an input filter module 2, a power factor correction module 3 and an input filter capacitor 4 arranged in sequence along a first direction. The output processing circuit comprises an output rectifier module 12, an output filter capacitor 13, an output switch module 14 and an output filter inductor 15 arranged in sequence along the opposite direction of the first direction. Figure 3 As shown in FIG. 3, the input filter module comprises an input filter inductor 201 and an input X capacitor 202. The power factor correction (PFC) module comprises a PFC current sensor 301, a PFC inductor 302 and a PFC MOSFET 303. The output rectifier module comprises a first output rectifier 121 and a second output rectifier 122 arranged in sequence along a second direction. The output switch module comprises a Hall sensor 141 and an output MOSFET 142. The output terminal comprises an output positive terminal 161 and an output negative terminal 162. In this embodiment, the internal circuit of the charging device is modularized, which is convenient for testing and maintenance of individual functional modules.

[0051] The main board 100 is further provided with a full-bridge MOSFET 6 located between the input processing circuit 200 of the first voltage side region and the transformer 11 of the second voltage side region. The high voltage side region and the low voltage side region are arranged on both sides of the full-bridge MOSFET 6, which can well realize high and low voltage isolation and meet the LVD (Low Voltage Directive) safety requirements.

[0052] like Figure 2 As shown, the motherboard 100 also has a first heat sink 18, which is located between the first voltage side region and the second voltage side region, and the first heat sink 18 is an elongated strip extending along the first direction. The top of the output rectifier module 12 also has a second heat sink (not shown in the figure), the shape of which is adapted to the planar shape of the output rectifier module 12. The top of the power factor correction module 3 also has a third heat sink (not shown in the figure), the shape of which is adapted to the planar shape of the power factor correction module. The height of the control board 17, the driver and power board 5 is not higher than the height of the first heat sink 18. Optionally, the heights of the control board 17, the driver and power board 5, the first heat sink 18, the second heat sink, and the third heat sink are basically the same, which can effectively utilize the height space of the motherboard 100 without increasing the original maximum height of the motherboard 100. This reduces the planar dimensions of the motherboard 100 while maintaining the same height, thereby reducing the overall volume of the charging device.

[0053] In this embodiment, to further reduce the planar dimensions of the motherboard 100, the power factor correction module 3 is stacked. The power factor correction module 3 is divided into a first PFC unit and a second PFC unit, with some circuit components of the power factor correction module 3 respectively disposed on the first and second PFC units. The first PFC unit is disposed on the surface of the motherboard 100, and the second PFC unit is disposed on a PFC board, which is positioned above the first PFC unit, with the orthographic projection of the PFC board onto the surface of the motherboard 100 at least partially overlapping the first PFC unit. A third heat sink is disposed above the PFC board. Therefore, the first and second PFC units are stacked vertically, effectively reducing the planar dimensions of the power factor correction module 3 by half, further reducing the planar dimensions of the motherboard 100, and making the wiring on the surface of the motherboard 100 more compact.

[0054] like Figure 3 As shown, the motherboard 100 is located on the second side along the first direction ( Figure 3 Two fan mounting locations 21 are provided on the right side of the motherboard 100. Two fans are mounted in the fan mounting locations 21 and connected to the fan interface 9. The two fans are respectively located in the first voltage side area and the second voltage side area, forming air ducts extending along the first direction in both the first voltage side area and the second voltage side area, which cooperate with the first heat sink 18 to achieve good ventilation and heat dissipation effect for the charging device.

[0055] In this embodiment, the first voltage side of transformer 11 ( Figure 2 The right side of transformer 11 is the high-voltage side, and the second voltage side is... Figure 2The left side of the transformer 11 is the low-voltage side. The positive line of the low-voltage side of the transformer 11 is connected to the output rectification module 12, and the negative of the low-voltage side of the transformer 11 is connected to the output negative terminal. The prior art method of leading out the negative of the low-voltage side of the transformer 11 is to make the transformer 11 body live, connect to the mainboard 100 through a pin, and connect to the output negative terminal through wiring on the mainboard 100. However, this method has safety hazards and does not meet the safety requirements. In this embodiment, the low-voltage side negative line of the transformer 11 is provided, and the low-voltage side negative line is connected to the output negative terminal in the output terminal 16 through a connecting line, which passes over the top end of the second heat sink to form a flying line. In this way, the transformer 11 body does not need to be live connected to the mainboard 100, improving the safety of use and better solving the safety problem.

[0056] As shown in Figure 2 and Figure 3 The input processing circuit further includes a rectifier bridge stack 20. The charging control assembly further includes a resonance capacitor 7, a current transformer 8, a resonance inductor 10, and an input relay 19. The components from the input terminal 1 to the output terminal 16 are in turn: the input terminal 1, the input filter module 2, the rectifier bridge stack 20, the power factor correction module 3, the input filter capacitor 4, the full-bridge field effect transistor 6, the transformer 11, the output rectification module 12, the output filter capacitor 13, the output switch module 14, the output filter inductor 15, and the output terminal 16, forming a U-shaped current flow. The components and structures provided on the mainboard 100 of the charging control assembly are only examples and do not limit the protection scope of the present application.

[0057] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be considered as falling within the protection scope of the present application.

Claims

1. A charging device, characterized by, The charging control assembly comprises: The main board is provided with an input terminal, an input processing circuit, a transformer, an output processing circuit and an output terminal connected in sequence to form a current path; The control board is provided with a control circuit, and is detachably mounted on the main board, and the extension direction of the control board is arranged at an angle with the extension direction of the main board.

2. The charging device according to claim 1, characterized in that, The input terminal and the input processing circuit are arranged along a first direction, and the transformer, the output processing circuit and the output terminal are arranged along the opposite direction of the first direction; The main board comprises a first voltage side region and a second voltage side region arranged along a second direction, the input terminal and the input processing circuit are located in the first voltage side region, the transformer, the output processing circuit and the output terminal are located in the second voltage side region, and the control board is located between the first voltage side region and the second voltage side region.

3. The charging device according to claim 2, characterized in that, The main board is further provided with a full-bridge field effect transistor, which is located between the input processing circuit of the first voltage side region and the transformer of the second voltage side region.

4. The charging apparatus according to claim 2, characterized by, The main board is further provided with a first heat sink, which is arranged between the first voltage side region and the second voltage side region, and the first heat sink extends along the first direction.

5. The charging apparatus according to claim 4, characterized by, The control board is perpendicular to the main board, and the height of the control board is not higher than the height of the first heat sink.

6. The charging apparatus according to claim 2, wherein The input terminal and the output terminal are arranged on the first side of the main board along the first direction, and the second side of the main board along the first direction is provided with two fans, which are arranged in the first voltage side region and the second voltage side region respectively.

7. The charging apparatus according to claim 2, wherein The input processing circuit comprises an input filter module, a power factor correction module and an input filter capacitor arranged in sequence along the first direction, and the output processing circuit comprises an output rectifier module, an output filter capacitor, an output switch module and an output filter inductor arranged in sequence along the opposite direction of the first direction.

8. The charging apparatus according to claim 1, characterized by, Further comprising a driving and power supply board, which is detachably mounted on the main board, and the extension direction of the driving and power supply board is arranged at an angle with the extension direction of the main board.

9. The charging apparatus according to claim 1, characterized by, The input processing circuit comprises a power factor correction module, the power factor correction module comprises a first PFC unit and a second PFC unit, the first PFC unit is arranged on the surface of the main board, the second PFC unit is arranged on a PFC board, the PFC board is arranged above the first PFC unit, and the orthographic projection of the PFC board on the surface of the main board at least partially overlaps the first PFC unit.

10. The charging apparatus according to claim 1, characterized by, The output processing circuit comprises an output rectifier module, the top of the output rectifier module is provided with a second heat sink, the negative line of the second voltage side of the transformer is connected to the output negative terminal in the output terminal through a connecting line, and the connecting line passes over the top end of the second heat sink.

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