Charging module

Abstract

The utility model discloses a charging module, and the charging module comprises a DC board, the DC board comprises a plurality of DC / DC converters, and the DC / DC converters are arranged in parallel along a first direction. The DC / DC converter comprises a first transformer and a second transformer; a first air duct in the second direction is formed between all the first transformers and all the second transformers, and the second direction is perpendicular to the first direction; the second direction is the ventilation direction of the charging module. In the scheme, a first air channel in the second direction is formed between all the first transformers and all the second transformers, the second direction is the ventilation direction of the charging module, and the ventilation direction of the charging module is the direction from the air inlet to the air outlet of the charging module. The first air duct serves as a ventilation path and brings heat generated by the first transformer and the second transformer out of the charging module, so that the heat dissipation efficiency of the charging module can be improved.

Description

Technical Field

[0001] This application relates to the technical field of charging devices, and particularly to a charging module. Background Art

[0002] The main function of the charging module in a charging pile is to perform power conversion. During the power conversion process, some energy is lost, and most of the lost energy is converted into heat. The continuous accumulation of heat will cause local overheating, which will affect the operation efficiency and lifespan of the charging module. In severe cases, it will cause the module to freeze, resulting in the charging module and the entire charging cabinet being unable to work properly.

[0003] Currently, the charging module mainly uses air-cooling technology. The blower blows air directly to cool each heat-generating component in the charging module to reduce the temperature inside the charging module and ensure its normal operation. However, when using the blower to blow air for heat dissipation, the efficiency is relatively low, especially for components far from the air outlet. When the temperature of some components is too high, it will affect the normal use of the charging module and the entire charging pile, reduce the lifespan of the charging module and the entire charging pile, and even damage the charging module and the entire charging pile in severe cases. Utility Model Content

[0004] An embodiment of this application provides a charging module.

[0005] An embodiment of this application provides a charging module, which includes a DC board. The DC board includes several DC / DC converters, and the DC / DC converters are arranged in parallel along a first direction;

[0006] The DC / DC converter includes a first transformer and a second transformer;

[0007] A first air duct is formed between all the first transformers and all the second transformers along a second direction, and the second direction is perpendicular to the first direction; the second direction is the ventilation direction of the charging module.

[0008] In one embodiment, the DC / DC converter further includes a resonant device;

[0009] A second air duct is formed between all the resonant devices and all the first transformers along the second direction.

[0010] In one embodiment, the resonant device includes a resonant capacitor and a resonant inductor;

[0011] One of all the resonant inductors is arranged in a staggered manner with the remaining resonant inductors, and one of all the corresponding resonant capacitors is arranged in a staggered manner with the remaining resonant capacitors;

[0012] A third air duct is formed between all the resonant capacitors and all the resonant inductors along the second direction.

[0013] In one embodiment, the DC / DC converter further includes a first switching device and a second switching device;

[0014] All the second switching devices and the resonant device form a fourth air duct in the second direction;

[0015] All the first switching devices and all the second switching devices form a fifth air duct in the second direction.

[0016] In one embodiment, a first heat sink is provided on the first switching device, and / or a second heat sink is provided on the second switching device.

[0017] In one embodiment, the DC / DC converter further includes a first rectifying device and a second rectifying device;

[0018] All the first rectifying devices and all the second transformers form a sixth air duct in the second direction;

[0019] All the first rectifying devices and all the second rectifying devices form a seventh air duct in the second direction.

[0020] In one embodiment, a third heat sink is provided on the first rectifying device, and / or a fourth heat sink is provided on the second rectifying device.

[0021] In one embodiment, the charging module further includes a PFC board, and the PFC board includes a three-phase PFC circuit;

[0022] An eighth air duct and a ninth air duct in the second direction are respectively formed between adjacent phases of the three-phase PFC circuit;

[0023] Each phase of the PFC circuit includes a PFC inductor, a first PFC diode, a second PFC diode, a third switching device, and a fourth switching device;

[0024] A fifth heat sink is provided on the first PFC diode and the third switching device, and / or a sixth heat sink is provided on the second PFC diode and the fourth switching device;

[0025] An internal air duct is formed between the first PFC diode, the third switching device and the second PFC diode and the fourth switching device.

[0026] In one embodiment, the PFC board further includes an input EMI circuit and a first bus capacitor;

[0027] A tenth air duct in the second direction is formed between the input EMI circuit and the three-phase PFC circuit;

[0028] An eleventh air duct in the second direction is formed between the first bus capacitor and the three-phase PFC circuit.

[0029] In one embodiment, the charging module includes a housing, which includes: a module display panel, a heat dissipation air inlet panel, an input / output terminal mounting panel, a heat dissipation air outlet panel, a first cover plate, and a second cover plate;

[0030] The module display panel and the input / output terminal mounting panel are arranged along the second direction; the heat dissipation air inlet panel and the heat dissipation air outlet panel are arranged along the first direction;

[0031] The DC board is mounted on the first cover plate, and the PFC board is mounted on the second cover plate;

[0032] An output terminal is provided on one side of the DC board close to the input / output terminal mounting panel; an output hole corresponding to the output terminal is provided on the input / output terminal mounting panel;

[0033] An input terminal is provided on one side of the PFC board close to the input / output terminal mounting panel; an input hole corresponding to the input terminal is provided on the input / output terminal mounting panel.

[0034] The present application has the following beneficial effects compared with the prior art:

[0035] In the charging module provided by the present application, a first air duct is formed between all the first transformers and all the second transformers along the second direction, where the second direction is the ventilation direction of the charging module, and the ventilation direction of the charging module is the direction from the air inlet to the air outlet of the charging module. The first air duct serves as a ventilation path to take out the heat generated by the first transformers and the second transformers from the charging module, which can improve the heat dissipation efficiency of the charging module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a schematic structural diagram of the DC board in the charging module provided by the embodiment of the present application;

[0038] Figure 2 It is a schematic structural diagram of the PFC board in the charging module provided by the embodiment of the present application;

[0039] Figure 3 It is an unfolded schematic diagram of the housing in the charging module provided by the embodiment of the present application;

[0040] Figure 4 It is a schematic structural diagram of the DC board placed in the housing in the charging module provided by the embodiment of the present application;

[0041] Figure 5 This is a schematic structural diagram of the PFC board placed in the housing in the charging module provided by the embodiment of the present application. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0044] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0045] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0046] Refer to Figures 1-5 , the embodiments of the present application provide a charging module. It can be understood that the charging module includes a PFC board 200 and a DC board 100. Among them, the PFC board 200 is mainly responsible for rectifying alternating current into direct current and ensuring the effective transmission of electric energy through power factor correction technology, while the DC board 100 is responsible for further converting the voltage of the direct current into a voltage that meets the requirements of battery charging.

[0047] As Figure 1As shown, the charging module includes a DC board 100, and the DC board 100 includes a plurality of DC / DC converters 110, and the DC / DC converters 110 of all paths are arranged in parallel along a first direction;

[0048] The DC / DC converter 110 includes a first transformer 111 and a second transformer 112;

[0049] Between all the first transformers 111 and all the second transformers 112, a first air duct 1 is formed along a second direction, and the second direction is perpendicular to the first direction; the second direction is the ventilation direction of the charging module.

[0050] Specifically, the DC board 100 includes a plurality of DC / DC converters 110, which can convert DC voltage into DC voltages of different levels to meet different load requirements. It can be understood that the number of paths of the DC / DC converter 110 can be set according to actual needs and is not limited herein. For example, Figure 1 in the figure, the DC / DC converter 110 is shown as an example of 4 paths.

[0051] The DC / DC converter 110 includes a first transformer 111 and a second transformer 112. Among them, the first transformer 111 and the second transformer 112 are used to achieve primary-secondary isolation and energy transfer, etc.

[0052] In this embodiment, between all the first transformers and all the second transformers, a first air duct is formed along the second direction. Among them, the second direction is the ventilation direction of the charging module, and the ventilation direction of the charging module is the direction from the air inlet to the air outlet of the charging module. The first air duct serves as a ventilation path to take out the heat generated by the first transformer and the second transformer from the charging module, which can improve the heat dissipation efficiency of the charging module.

[0053] It can be understood that in order to maximize the heat dissipation efficiency of the first air duct 1, the width of the first air duct 1 can be changed by arranging the first transformer 111 and the second transformer 112 in each path of the DC / DC converter 110. For example, the width between the first transformer 111 and the second transformer 112 on the side close to the air inlet of the charging module is larger, and along the direction from the air inlet to the air outlet of the charging module, the width gradually decreases. It can also be understood that after the width becomes smaller, it can increase again, etc. Exemplarily, taking the DC / DC converter 110 as an example of 4 paths, there are 4 corresponding first transformers 111 and 4 second transformers 112. The width between the two first transformers 111 and the second transformers 112 on the side close to the air inlet of the charging module is larger. The width between the third first transformer 111 and the second transformer 112 counted from the air inlet side is smaller than the width of the previous two, and the width between the fourth first transformer 111 and the second transformer 112 counted from the air inlet side is larger than the width of the third.

[0054] In one embodiment, the DC / DC converter 110 further includes a resonant device 113;

[0055] A second air duct 2 in the second direction is formed between all the resonant devices 113 and all the first transformers 111.

[0056] Specifically, the resonant device 113 is used to achieve or improve the resonant characteristics of the DC / DC converter 110, which can help optimize the power factor, reduce losses, and improve the operating efficiency of the converter.

[0057] The second air duct 2 in the second direction formed between all the resonant devices 113 and all the first transformers 111 can take away the heat of the resonant device 113 and further take away the heat of the first transformer 111, further improving the heat dissipation efficiency of the charging module.

[0058] In one embodiment, the resonant device 113 includes a resonant capacitor 1131 and a resonant inductor 1132;

[0059] One of all the resonant inductors 1132 is arranged in a staggered manner with the remaining resonant inductors 1132, and one of all the corresponding resonant capacitors 1131 is arranged in a staggered manner with the remaining resonant capacitors 1131;

[0060] A third air duct 3 in the second direction is formed between all the resonant capacitors 1131 and all the resonant inductors 1132.

[0061] Specifically, the resonant inductor 1132 and the resonant capacitor 1131 form a resonant network that generates resonance at a specific frequency, and the resonant inductor 1132 and the resonant capacitor 1131 jointly determine the resonant frequency.

[0062] If all the resonant capacitors 1131 and all the resonant inductors 1132 are arranged along the second direction, the wind will directly discharge along the air duct between all the resonant capacitors 1131 and all the resonant inductors 1132, and only a small amount of heat generated by the resonant capacitor 1131 and the resonant inductor 1132 can be taken away. Therefore, one of all the resonant inductors 1132 is arranged in a staggered manner with the remaining resonant inductors 1132, and one of all the corresponding resonant capacitors 1131 is arranged in a staggered manner with the remaining resonant capacitors 1131. It can be understood that the staggered resonant inductor 1132 and resonant capacitor 1131 can be set according to actual needs. Exemplarily, as Figure 1 In the figure, the third resonant inductor 1132 and resonant capacitor 1131 counted from the air inlet direction to the air outlet direction are arranged in a staggered manner.

[0063] That is, the third air duct 3 is a non-linear air duct formed along the misaligned resonant capacitor 1131 and resonant inductor 1132. Through the third air duct 3, a large amount of heat generated by the resonant capacitor 1131 and resonant inductor 1132 can be taken away.

[0064] In this embodiment, the third air duct formed by the misaligned resonant capacitor and resonant inductor can take away a large amount of heat generated by the resonant capacitor and resonant inductor, and the heat dissipation efficiency is further improved.

[0065] In one embodiment, the DC / DC converter 110 further includes a first switching device and a second switching device;

[0066] All the second switching devices and the resonant device 113 form a fourth air duct 4 along the second direction;

[0067] All the first switching devices and all the second switching devices form a fifth air duct 5 along the second direction.

[0068] Specifically, the first switching device and the second switching device can adopt power-type switching devices, such as MOSFET tubes, which are voltage-driven and suitable for higher-frequency application scenarios. The first switching device and the second switching device respectively adopt two MOSFET tubes. As the full-bridge switching devices of the LLC oscillation circuit, the first switching device and the second switching device have small conduction losses and form an LLC full-bridge circuit with the resonant device 113, the first transformer 111, the second transformer 112, etc. By adjusting the switching frequencies and duty cycles of the first switching device and the second switching device, a wide-range voltage output is achieved, and most working conditions fall into the soft-switching state, greatly reducing the switching losses. Among them, in Figure 1 the first switching device and the second switching device are respectively covered by the first heat sink 114 and the second heat sink 115, which are not shown.

[0069] Through the fourth air duct and the fifth air duct, the heat generated by the first switching device and the second switching device can be taken away, and further the heat generated by the resonant device can be taken away, improving the heat dissipation efficiency of the charging module.

[0070] In one embodiment, a first heat sink 114 is provided on the first switching device, and / or a second heat sink 115 is provided on the second switching device.

[0071] Specifically, the heat sinks (including the first heat sink 114 and the second heat sink 115) can effectively reduce the operating temperature of the switching devices (including the first switching device and the second switching device). The first heat sink can be provided only on the first switching device, while the second heat sink is not provided on the second switching device. Or the second heat sink can be provided only on the second switching device, while the first heat sink is not provided on the first switching device. Or the first heat sink can be provided on the first switching device and the second heat sink can be provided on the second switching device at the same time. The heat dissipation effect is the best when the first heat sink and the second heat sink are provided at the same time.

[0072] When the first heat sink is provided on the first switching device and the second heat sink is provided on the second switching device at the same time, the layout, quantity, size, height, and the distance between the first heat sink 114 and the second heat sink 115 can be set according to actual requirements. For example, Figure 1 , one first heat sink 114 is provided on the first switching device in the two DC / DC converters 110 near the air inlet side, and one first heat sink 114 is provided on the first switching device in the two DC / DC converters 110 near the air outlet side. Correspondingly, one second heat sink 115 is provided on the second switching device in the two DC / DC converters 110 near the air inlet side, and one second heat sink 115 is provided on the second switching device in the two DC / DC converters 110 near the air outlet side.

[0073] It can be understood that the distance between the first heat sink 114 and the second heat sink 115 near the air inlet side can be set to be greater than the distance between the first heat sink 114 and the second heat sink 115 near the air outlet side. It can also be understood that the sizes of the first heat sink 114 and the second heat sink 115 near the air inlet side can be set to be correspondingly smaller than the sizes of the first heat sink 114 and the second heat sink 115 near the air outlet side. It can also be understood that the thicknesses of the first heat sink 114 and the second heat sink 115 near the air inlet side can be set to be correspondingly smaller than the thicknesses of the first heat sink 114 and the second heat sink 115 near the air outlet side. The above settings can all increase the heat dissipation efficiency of the charging module. In addition, at least one of the above setting methods can be selected, and multiple setting methods can be combined arbitrarily.

[0074] In one embodiment, the DC / DC converter 110 further includes a first rectifying device and a second rectifying device;

[0075] A sixth air duct 6 in the second direction is formed between all the first rectifying devices and all the second transformers 112;

[0076] A seventh air duct 7 in the second direction is formed between all the first rectifying devices and all the second rectifying devices.

[0077] Specifically, the first rectifying device and the second rectifying device are used for output rectification, and output rectifying diodes can be adopted. Among them, in Figure 1 the first rectifying device and the second rectifying device are respectively covered by a third heat sink and a fourth heat sink, which are not shown.

[0078] Through the sixth air duct 6 and the seventh air duct 7, the heat generated by the first rectifying device and the second rectifying device can be taken away, and further the heat generated by the second transformer 112 can be taken away, improving the heat dissipation efficiency of the charging module.

[0079] In one embodiment, a third heat sink 116 is provided on the first rectifying device, and / or a fourth heat sink 117 is provided on the second rectifying device.

[0080] Specifically, the heat sinks (including the third heat sink 116 and the fourth heat sink 117) can effectively reduce the working temperature of the rectifying devices (including the first rectifying device and the second rectifying device). The third heat sink can be provided only on the first rectifying device without the fourth heat sink on the second rectifying device, or the fourth heat sink can be provided only on the second rectifying device without the third heat sink on the first rectifying device. It is also possible to provide the third heat sink on the first rectifying device and the fourth heat sink on the second rectifying device at the same time. The heat dissipation effect is the best when the third heat sink and the fourth heat sink are provided at the same time.

[0081] When the third heat sink is provided on the first rectifying device and the fourth heat sink is provided on the second rectifying device at the same time, the layout, quantity, size, height and the distance between the two of the third heat sink 116 and the fourth heat sink 117 can be set according to actual requirements. For example, as Figure 1 shown, a third heat sink 116 is provided on the first rectifying device of the two DC / DC converters 110 near the air inlet side, and a third heat sink 116 is provided on the first rectifying device of the two DC / DC converters 110 near the air outlet side. Correspondingly, a fourth heat sink 117 is provided on the second rectifying device of the two DC / DC converters 110 near the air inlet side, and a fourth heat sink 117 is provided on the second rectifying device of the two DC / DC converters 110 near the air outlet side.

[0082] It can be understood that the distance between the third radiator 116 and the fourth radiator 117 on the side close to the air inlet can be set to be greater than the distance between the third radiator 116 and the fourth radiator 117 on the side close to the air outlet. It can also be understood that the sizes of the third radiator 116 and the fourth radiator 117 on the side close to the air inlet can be set to be correspondingly smaller than the sizes of the third radiator 116 and the fourth radiator 117 on the side close to the air outlet. It can also be understood that the thicknesses of the third radiator 116 and the fourth radiator 117 on the side close to the air inlet can be set to be correspondingly smaller than the thicknesses of the third radiator 116 and the fourth radiator 117 on the side close to the air outlet. The above settings can all increase the heat dissipation efficiency of the charging module. In addition, at least one of the above setting methods can be selected optionally, and multiple setting methods can be combined arbitrarily.

[0083] It can be understood that the DC / DC converter 110 further includes a second bus capacitor 118 for smoothing the output voltage, improving stability, and filtering out interference. Each DC / DC converter 110 can adopt two second bus capacitors 118. The second bus capacitor 118 can be arranged on the side of the first switching device away from the second switching device, and all the second bus capacitors are arranged along the second direction. An air duct is also formed between all the second bus capacitors and all the first switching devices along the second direction to take away the heat generated by the second bus capacitor and further take away the heat generated by the first switching device, improving the heat dissipation efficiency of the charging module.

[0084] It can also be understood that an anti-blocking diode is further arranged on the DC board 100 to prevent the reverse voltage from being back-fed into the charging module and causing damage to the module. The anti-blocking diode is arranged on the side of the second rectifying device away from the first rectifying device. Further, a radiator can be arranged on the anti-blocking diode to effectively reduce the temperature of the anti-blocking diode. Among them, Figure 1 in, the anti-blocking diode is covered by the radiator and not shown.

[0085] In one embodiment, referring to Figure 2 , the charging module further includes a PFC board 200, and the PFC board 200 includes a three-phase PFC circuit 210;

[0086] An eighth air duct 8 and a ninth air duct 9 are respectively formed between adjacent phases of the three-phase PFC circuit 210 along the second direction;

[0087] Each phase of the PFC circuit includes a PFC inductor 211, a first PFC diode 212, a second PFC diode 213, a third switching device 214, and a fourth switching device 215;

[0088] A fifth radiator 216 is arranged on the first PFC diode 212 and the third switching device 214, and / or a sixth radiator 217 is arranged on the second PFC diode 213 and the fourth switching device 215;

[0089] An internal air duct 12 is formed between the first PFC diode 212, the third switching device 214 and the second PFC diode 213 and the fourth switching device 215.

[0090] Specifically, the PFC board 200 reduces the reactive power in the power line and improves the power factor by adjusting the phase difference between the input current and voltage.

[0091] Among them, the PFC inductor 211 is used for energy transfer in the power loop. The third switching device 214 and the fourth switching device 215 can adopt power switching devices, such as IGBT tubes, which can efficiently manage and control the switching process of the power supply. It can be understood that the first PFC diode 212 and the second PFC diode 213 can respectively adopt two PFC diodes, and the third switching device 214 and the fourth switching device 215 can respectively adopt two IGBT tubes.

[0092] The radiator (including the fifth radiator 216 and / or the sixth radiator 217) can effectively reduce the operating temperature of the first PFC diode 212, the third switching device 214 and / or the second PFC diode 213 and the fourth switching device 215.

[0093] The layout, size, height, etc. of the fifth radiator 216 and / or the sixth radiator 217 can be set according to actual requirements.

[0094] In this embodiment, through the combined action of the eighth air duct 8, the ninth air duct 9 and the internal air duct 12, and the configuration of the radiator, the heat generated by each component in the PFC circuit can be taken away, improving the heat dissipation efficiency of the charging module.

[0095] In one embodiment, the PFC board 200 further includes an input EMI circuit 220 and a first bus capacitor 230;

[0096] An air duct 10 in the second direction is formed between the input EMI circuit 220 and the three-phase PFC circuit 210;

[0097] An air duct 11 in the second direction is formed between the first bus capacitor 230 and the three-phase PFC circuit 210.

[0098] Specifically, the input EMI circuit 220 may include an EMI inductor 221, a fuse 222, a varistor 223, etc. Among them, the EMI inductor 221 is used to suppress electromagnetic interference, improve circuit stability and reliability. When the operating current of the circuit is small (rated), the internal resistance of the fuse 222 is very small and has no impact on the circuit. When an abnormality occurs in the circuit, such as a short circuit, the large current generated in the circuit flows through the fuse 222, instantly generating enough heat to cause its own fuse, thus playing a protective role for the circuit. The varistor 223 has a very large resistance under normal conditions and a small resistance when the voltage is large, which can suppress surge impacts and protect the module. Generally, it is used in the input part of the switching power supply to prevent lightning surges. Generally, a varistor is connected across the L and N phases at the input end.

[0099] The layout of the components in the input EMI circuit 220 can be set according to actual requirements, with the principle of optimizing the heat dissipation efficiency of each component in the input EMI circuit 220.

[0100] The first bus capacitor 230 smooths the current by storing and releasing charges, thereby improving the power factor of the power supply, filtering out high-frequency noise of the power supply, and absorbing and suppressing harmonics. It can be understood that the layout of the first bus capacitor 230 can be set according to actual requirements.

[0101] In this embodiment, the heat generated by the input EMI circuit is taken away by the tenth air duct, and further the heat generated by the three-phase PFC circuit is taken away. The heat generated by the first bus capacitor is taken away by the eleventh air duct, and further the heat generated by the three-phase PFC circuit is taken away, thereby improving the heat dissipation efficiency of the charging module.

[0102] In one embodiment, as Figures 3-5 shown, the charging module includes a housing 300, and the housing 300 includes: a module display panel 310, a heat dissipation air inlet panel 320, an input / output terminal mounting panel 330, a heat dissipation air outlet panel 340, a first cover plate 350, and a second cover plate 360;

[0103] The module display panel 310 and the input / output terminal mounting panel 330 are arranged along the second direction; the heat dissipation air inlet panel 320 and the heat dissipation air outlet panel 340 are arranged along the first direction;

[0104] The DC board 100 is installed on the first cover plate 350, and the PFC board 200 is installed on the second cover plate 360;

[0105] Output terminals are provided on one side of the DC board 100 close to the input / output terminal mounting panel 330; output holes corresponding to the output terminals are provided on the input / output terminal mounting panel 330;

[0106] On one side of the PFC board 200 close to the input / output terminal mounting panel 330, an input terminal 240 is provided; an input hole corresponding to the input terminal 240 is formed on the input / output terminal mounting panel 330.

[0107] Specifically, the module display panel 310 is provided with indicator lights for displaying the status of the charging module according to actual needs. For example, a charging status indicator light, etc., to facilitate the operator to understand the situation of the charging module. Among them, the indicator lights on the module display panel 310 are not shown in the figure.

[0108] Air inlet holes are formed on the heat dissipation air inlet panel 320, and air flows into the housing 300 through the air inlet holes to cool electronic components on the DC board 100 and the PFC board 200 inside the housing 300, etc. It can be understood that the shape, size and position of the air inlet holes can be set according to actual needs and are not limited here.

[0109] Air outlet holes are formed on the heat dissipation air outlet panel 340, and the hot air inside the housing 300 flows out through the air outlet holes to maintain the temperature balance inside the housing 300. It can be understood that the shape, size and position of the air outlet holes can be set according to actual needs and are not limited here.

[0110] The heat dissipation air inlet panel 320 and the heat dissipation air outlet panel 340 are arranged opposite to each other to create an effective air flow path, and this flow path is consistent with the directions of the respective air ducts on the DC board 100 and the PFC board 200, which can enable natural convection of air inside the housing 300 and improve the heat dissipation efficiency of the charging module.

[0111] The input / output terminal mounting panel 330 is provided with an output hole corresponding to the output terminal 120 and an input hole corresponding to the input terminal 240. The wire harness passes through the output hole and the input hole and can be connected to the output terminal 120 and the input terminal 240 of the charging module to realize the connection between the charging module and the power distribution module in the charging system.

[0112] It can be understood that one of the first cover plate 350 and the second cover plate 360 is the upper cover plate of the housing 300, and the other is the lower cover plate.

[0113] The module display panel 310, the heat dissipation air inlet panel 320, the heat dissipation air outlet panel 340, the input / output terminal mounting panel 330 and the upper and lower covers form a hollow housing 300. It can be understood that the housing 300 can be composed of the module display panel 310, the heat dissipation air inlet panel 320, the heat dissipation air outlet panel 340, the input / output terminal mounting panel 330, the first cover 350 and the second cover 360, which are installed by a total of 6 plates; it can also be: the two ends of the first cover 350 are folded at right angles respectively, and the two ends of the second cover 360 are also folded at right angles respectively. Air inlet holes and air outlet holes are respectively opened in the parts folded down at the two ends of the first cover 350 and the parts folded down at the two ends of the second cover 360 to correspondingly form the heat dissipation air inlet panel 320 and the heat dissipation air outlet panel 340. There is no limitation on how the housing 300 is formed here, and it can be selected according to the process requirements as long as the functions required for each part can be satisfied.

[0114] As Figure 4 shown, the DC board 100 is installed on the first cover 350. Among them, Figure 4 the resonant capacitor and the resonant inductor on the DC board 100 are not misaligned. Figure 4 The part of the first cover 350 below the DC board 100 is covered and not marked. As Figure 5 shown, the PFC board 200 is installed on the second cover 360. Among them, Figure 5 the part of the second cover 360 below the PFC board 200 is covered and not marked. It can be understood that the PFC board 200 and the DC board 100 are installed in the housing 300 in a way of buckling up and down. It can also be understood that they can be installed in the housing 300 in the way of the PFC board 200 on top and the DC board 100 below, or in the way of the DC board 100 on top and the PFC board 200 below. There is no limitation here.

[0115] In the charging module provided in this embodiment, the input / output terminal mounting panel 330 is vertically arranged with the heat dissipation air inlet panel 320 and the heat dissipation air outlet panel 340. Compared with the traditional charging module where the heat dissipation air outlet and the input / output terminals are arranged on the same panel, the heat dissipation air outlet will not have a thermal impact on the input / output terminals, the wiring harness between the power distribution modules and the power distribution module, and the power distribution module and the wiring harness, etc. will not affect the heat dissipation channel of the charging module, which is beneficial to reducing the system heat dissipation air resistance and facilitating the heat dissipation of the charging module.

[0116] Based on the above embodiments, the charging module may further include: a fan disposed on the heat dissipation air inlet panel 320. It can be understood that multiple fans can be provided on the heat dissipation air inlet panel 320 according to actual requirements. It can also be understood that the air inlet holes on the heat dissipation air inlet panel 320 can be opened at corresponding positions of the fans. The fan is not shown in the figure and is disposed at the corresponding position of the air inlet hole inside the housing 300. By providing a fan on the heat dissipation air inlet panel 320, relatively cold external air can be actively sucked in and the hot air inside the housing 300 can be pushed out, accelerating the transfer and dissipation of heat through forced convection. Compared with passive heat dissipation relying on natural convection, the forced convection of the fan can more effectively reduce the temperature inside the charging module and keep the electronic components operating within a reasonable temperature range.

[0117] Based on the above embodiments, the charging module may further include: a handle disposed on the module display panel 310. Among them, the handle can be detachably disposed on the module display panel 310. By providing a handle on the module display panel 310, it is convenient to pull out or insert the charging module into the charging system.

[0118] Based on the above embodiments, first connecting plates and second connecting plates are respectively disposed at both ends where the module display panel 310 is connected to the heat dissipation air inlet panel 320 and the heat dissipation air outlet panel 340. Among them, the first connecting plate and the second connecting plate and the module display panel 310 can be integrally designed, or the first connecting plate and the second connecting plate can be respectively fixed to both ends of the module display panel 310 by welding or other means. The specific design method can be selected according to the actual required process and is not limited herein. The charging module can be installed on the charging system through the first connecting plate and the second connecting plate.

[0119] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A charging module, characterized in that: The charging module comprises a DC board (100), the DC board (100) comprises a plurality of DC / DC converters (110), and the DC / DC converters (110) are arranged in parallel along a first direction; The DC / DC converter (110) comprises a first transformer (111) and a second transformer (112); A first air duct (1) along a second direction is formed between all the first transformers (111) and all the second transformers (112), and the second direction is perpendicular to the first direction; the second direction is the ventilation direction of the charging module.

2. The charging module according to claim 1, characterized in that: The DC / DC converter (110) further comprises a resonant device (113); A second air duct (2) along the second direction is formed between all the resonant devices (113) and all the first transformers (111).

3. The charging module according to claim 2, characterized in that: The resonant device (113) comprises a resonant capacitor (1131) and a resonant inductor (1132); One of the resonant inductors (1132) is staggered with the other resonant inductors (1132), and one of the resonant capacitors (1131) is staggered with the other resonant capacitors (1131) among all the resonant inductors (1132); correspondingly, one of the resonant capacitors (1131) is staggered with the other resonant capacitors (1131); A third air duct (3) along the second direction is formed between all the resonant capacitors (1131) and all the resonant inductors (1132).

4. The charging module according to claim 2, characterized in that: The DC / DC converter (110) further comprises a first switching device and a second switching device; A fourth air duct (4) along the second direction is formed between all the second switch devices and the resonant device (113); A fifth air duct (5) along the second direction is formed between all the first switch devices and all the second switch devices.

5. The charging module according to claim 4, characterized in that: The first switch device is provided with a first heat sink (114), and / or the second switch device is provided with a second heat sink (115).

6. The charging module according to claim 1, characterized in that: The DC / DC converter (110) further comprises a first rectifying device and a second rectifying device; A sixth air duct (6) along a second direction is formed between all the first rectifying devices and all the second transformers (112); A seventh air duct (7) along the second direction is formed between all the first rectifying devices and all the second rectifying devices.

7. The charging module according to claim 6, characterized in that: A third heat sink (116) is provided on the first rectifying device, and / or a fourth heat sink (117) is provided on the second rectifying device.

8. The charging module according to claim 1, characterized in that: The charging module further comprises a PFC board (200), wherein the PFC board (200) comprises a three-phase PFC circuit (210); An eighth air duct (8) and a ninth air duct (9) along the second direction are respectively formed between adjacent phases of the three-phase PFC circuit (210); Each phase PFC circuit comprises a PFC inductor (211), a first PFC diode (212), a second PFC diode (213), a third switch device (214), and a fourth switch device (215); A fifth heat sink (216) is provided on the first PFC diode (212) and the third switch device (214), and / or a sixth heat sink (217) is provided on the second PFC diode (213) and the fourth switch device (215); An internal air duct (12) is formed between the first PFC diode (212), the third switch device (214), the second PFC diode (213) and the fourth switch device (215).

9. The charging module according to claim 8, characterized in that: The PFC board (200) further includes an input EMI circuit (220) and a first bus capacitor (230); A tenth air duct (10) along the second direction is formed between the input EMI circuit (220) and the three-phase PFC circuit (210); An eleventh air duct (11) along the second direction is formed between the first bus capacitor (230) and the three-phase PFC circuit (210).

10. The charging module according to claim 8 or 9, characterized in that: The charging module comprises a housing (300), and the housing (300) comprises: a module display panel (310), a heat dissipation air inlet panel (320), an input and output terminal installation panel (330), a heat dissipation air outlet panel (340), a first cover plate (350), and a second cover plate (360); The module display panel (310) and the input / output terminal installation panel (330) are arranged along the second direction; the heat dissipation air inlet panel (320) and the heat dissipation air outlet panel (340) are arranged along the first direction; The DC board (100) is mounted on the first cover plate (350), and the PFC board (200) is mounted on the second cover plate (360); An output terminal (120) is provided on one side of the DC board (100) close to the input / output terminal installation panel (330); an output hole corresponding to the output terminal (120) is provided on the input / output terminal installation panel (330); An input terminal (240) is arranged on one side of the PFC board (200) close to the input / output terminal installation panel (330); and an input hole corresponding to the input terminal (240) is provided on the input / output terminal installation panel (330).

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