Power supply device and vehicle

Abstract

A power supply device and a vehicle, the power supply device comprises a housing, a circuit board assembly and a connection terminal assembly, and the housing is provided with an accommodating cavity; the circuit board assembly is accommodated in the accommodating cavity, the circuit board assembly comprises a mainboard, the mainboard is integrated with a DC conversion part, a low-voltage output part and a high-voltage output part, and the low-voltage output part and the high-voltage output part are electrically connected with the DC conversion part; the connecting terminal assembly comprises a low-voltage direct-current output terminal and a high-voltage direct-current output terminal, the low-voltage direct-current output terminal is electrically connected with the low-voltage output part, and the high-voltage direct-current output terminal is electrically connected with the high-voltage output part. According to the power supply device, the DC conversion part, the low-voltage output part and the high-voltage output part are integrated on the mainboard, so that the size and the weight of the power supply device can be reduced, the integration and lightweight design of a vehicle is facilitated, the power supply device can provide various DC power supplies with different voltages at the same time, and the power supply device is convenient to use. And diversified power utilization requirements of different power utilization devices in the vehicle are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply device technical field, concretely relates to a power supply device and vehicle. BACKGROUND

[0002] In recent years, with the rapid development of new energy electric vehicles, energy saving, environmental protection, safety and light weight will become the main development direction of future new energy electric vehicles. Among them, the power supply device in the new energy electric vehicle can provide power for the electric vehicle.

[0003] In the existing power supply device, the DCDC converter and the filter module in the power supply device are arranged separately, which occupies a large space, so that the volume and weight of the power supply device are relatively large, which is not conducive to the lightweight design of the power supply device. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a power supply device and vehicle, which can realize the lightweight design of the power supply device.

[0005] In order to realize the purpose of the utility model, the utility model provides the following technical scheme:

[0006] Firstly, the utility model provides a power supply device, which comprises a shell, a circuit board assembly and a connecting terminal assembly, the shell has a receiving cavity, the circuit board assembly is received in the receiving cavity, the circuit board assembly comprises a main board, the main board is integrated with a DC conversion part, a low-voltage output part and a high-voltage output part, the low-voltage output part and the high-voltage output part are electrically connected with the DC conversion part, the connecting terminal assembly comprises a low-voltage DC output terminal and a high-voltage DC output terminal, the low-voltage DC output terminal is electrically connected with the low-voltage output part, and the high-voltage DC output terminal is electrically connected with the high-voltage output part.

[0007] In one embodiment, the circuit board assembly further comprises a low-voltage output filter board and an adapter copper bar, and the low-voltage output filter board is electrically connected to the low-voltage output part through the adapter copper bar.

[0008] In one embodiment, the main board further comprises a shielding part, and the shielding part is arranged between the low-voltage output part and the high-voltage output part.

[0009] In one embodiment, the circuit board assembly further comprises a signal shielding cover, the signal shielding cover is connected with the low-voltage output part, and at least part of the signal shielding cover overlaps with the low-voltage DC output terminal in the orthographic projection of the main board.

[0010] In one embodiment, the circuit board assembly further comprises an input filter board and a shielding barrier, the input filter board is arranged in parallel with the main board and spaced apart from the main board, and the shielding barrier is arranged between the input filter board and the main board.

[0011] In one embodiment, a shielding cavity is formed between the housing and the shielding part, the circuit board assembly further comprises an inductor and a capacitor, the inductor and the capacitor are accommodated in the shielding cavity, the main board cover is arranged on the shielding cavity, and the inductor and the capacitor are both connected to the high-voltage output part.

[0012] In one embodiment, the connection terminal assembly further comprises an external signal terminal and a high-voltage input terminal, the external signal terminal is electrically connected to the main board, and the high-voltage input terminal is electrically connected to the input filter board.

[0013] In one embodiment, the circuit board assembly further comprises an OBC main board and a conversion board, the OBC main board is arranged in parallel with and spaced apart from the input filter board, and the OBC main board and the input filter board are electrically connected through the conversion board.

[0014] In one embodiment, the low-voltage DC output terminal, the high-voltage DC output terminal, the external signal terminal and the high-voltage input terminal are all arranged on the same side of the housing, the low-voltage DC output terminal is arranged between the high-voltage DC output terminal and the high-voltage input terminal, and the external signal terminal is arranged between the low-voltage DC output terminal and the main board.

[0015] In a second aspect, the utility model further provides a vehicle, including vehicle body, electric device and the power supply device of any one of the power supply device of various embodiments in the first aspect, the power supply device is arranged in the vehicle body, and the power supply device is used for receiving alternating current and converting alternating current into direct current and outputting to the electric device to power the electric device.

[0016] By integrating the DC conversion part, the low-voltage output part and the high-voltage output part on the main board, the volume and weight of the power supply device can be reduced, which is beneficial to the integration and lightweight design of the vehicle, the power supply device can provide direct current power of multiple different voltages at the same time, and meet the diversified power demand of different electric devices in the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0017] 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 needed in the description of the embodiments or the prior art. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 It is a perspective view of a power supply device of an embodiment;

[0019] Figure 2 It is a perspective view of a partial structure of a power supply device of an embodiment;

[0020] Figure 3 It is a bottom view of a partial structure of a power supply device of an embodiment;

[0021] Figure 4 It is an exploded schematic view of a power supply device of an embodiment.

[0022] Explanation of reference signs:

[0023] 100-power supply device, 10-housing, 11-receiving cavity, 12-shielding cavity, 20-circuit board assembly, 21-main board, 211-DC conversion part, 212-low-voltage output part, 213-high-voltage output part, 214-shielding part, 22-low-voltage output filter board, 23-adapter copper bar, 24-signal shielding cover, 25-input filter board, 26-shielding barrier, 27-OBC main board, 28-adapter plate, 291-inductor, 292-capacitor, 293-first magnetic element, 294-second magnetic element, 30-heat dissipation structure, 40-connection terminal assembly, 41-low-voltage DC output terminal, 42-high-voltage DC output terminal, 43-external signal terminal, 44-high-voltage input terminal;

[0024] Z-first direction. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or intervening components can also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components can also be present.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of "including," "comprising," "having," "containing," or "involving" and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0028] Some embodiments of the present application will now be described in detail with reference to the drawings. The following examples and features in the examples can be combined with each other, without conflict.

[0029] Please refer to Figures 1 to 4 The embodiment of the present application provides a vehicle, which comprises a vehicle body (not shown), an electrical device (not shown) and a power supply device 100 in the embodiment of the present application. The power supply device 100 is arranged in the vehicle body, and the power supply device 100 is used for receiving alternating current and converting the alternating current into direct current to output to the electrical device to supply power to the electrical device.

[0030] The vehicle can be an electric vehicle or a hybrid electric vehicle, and the vehicle body includes but is not limited to a vehicle frame. The electrical device includes but is not limited to a vehicle lamp, a display instrument, a vehicle-mounted air conditioner, a sound system, etc., and the electrical device is carried on the vehicle body.

[0031] Optionally, the power supply device 100 and the vehicle body can be connected and fixed by welding, bonding, clamping, screwing, riveting, magnetic attraction, etc., without limitation. The power supply device 100 can output direct current to the electrical device to supply power to the electrical device.

[0032] Optionally, the vehicle can further comprise a power battery, and the power supply device 100 can be used for receiving a first alternating current (AC) signal and outputting a first direct current (DC) signal, so that the power supply device 100 converts the alternating current input signal into high-voltage direct current required by the power battery, thereby realizing power supply to the power battery. The power supply device 100 is connected to the power battery of the vehicle, and the power supply device 100 can convert the high-voltage direct current input by the power battery into low-voltage direct current, thereby realizing power taking from the power battery and power supply to the electrical device of the vehicle.

[0033] The vehicle in the embodiment of the utility model, through adopt the power supply device 100 in the embodiment of the utility model, power supply device 100 is powered for electric device, in realizing high power density, power supply device 100 can dissipate the heat generated during operation in time, guarantee the use safety of power supply device 100.

[0034] The power supply device 100 in the embodiment of the utility model is introduced in detail below.

[0035] First, define the direction. Please refer to Figures 1 to 3 , Z is the first direction.

[0036] Optionally, the first direction Z is the height direction of the power supply device 100. When the power supply device 100 is placed horizontally on the ground, the first direction Z is the direction of gravity.

[0037] Please refer to Figures 1 to 4 , the utility model embodiment provides a kind of power supply device 100, including shell 10, circuit board assembly 20 and connecting terminal assembly 40, shell 10 has receiving cavity 11, and circuit board assembly 20 is received in receiving cavity 11.

[0038] Shell 10 can be material with higher structural strength, specifically can be metal material, high-strength plastic, ceramic etc., metal material is for example aluminum, aluminum alloy, magnesium alloy, iron and iron alloy etc..Shell 10 can be integrated structure, namely shell 10 is integrated structure made of one-piece forming process, one-piece forming process specifically can be stamping, casting etc., not limited. Shell 10 can also be split structure, and each part of shell 10 can be connected and fixed by welding, bonding, clamping, screwing etc.

[0039] Circuit board assembly 20 includes mainboard 21, and mainboard 21 is integrated with DC conversion part 211, low-voltage output part 212 and high-voltage output part 213, and low-voltage output part 212 and high-voltage output part 213 are electrically connected with DC conversion part 211.

[0040] Mainboard 21 includes substrate, and the substrate of mainboard 21 can adopt any feasible circuit board in the art, for example printed circuit board (PCB) etc., not limited. Each functional module integrated on mainboard 21 is electrically connected and signal transmission by wiring.

[0041] The DC conversion unit 211 is the core conversion module of the power supply device 100, and its main function is to convert the input DC power supply to provide appropriate basic power supply for the subsequent low-voltage output unit 212 and high-voltage output unit 213. Specifically, the DC conversion unit 211 includes an input filter circuit, a switch control circuit and an output rectifier filter circuit. The input filter circuit is arranged at the input end of the DC conversion unit 211, which can filter out high-frequency noise and interference signals in the input power supply to avoid affecting the subsequent circuit, and at the same time provide a stable input voltage for the DC conversion unit 211; the switch control circuit accurately controls the on-off time and frequency of the switching element according to the feedback signal of the output voltage, so as to realize the stable regulation of the output voltage; the output rectifier filter circuit can further smooth the pulsed DC signal, and output a stable DC voltage to provide reliable power supply for the low-voltage output unit 212 and the high-voltage output unit 213.

[0042] The low-voltage output unit 212 is used to further convert the basic power supply output by the DC conversion unit 211 into a stable low-voltage DC power supply required by the low-voltage electrical equipment in the vehicle, and the high-voltage output unit 213 is used to convert the basic power supply output by the DC conversion unit 211 into a high-voltage DC power supply required by the high-voltage electrical equipment in the vehicle. The main board 21 is arranged to integrate the DC conversion unit 211, the low-voltage output unit 212 and the high-voltage output unit 213, which can improve the integration degree of the power supply device 100, and does not need to arrange too many circuit boards, thereby reducing the weight of the power supply device 100.

[0043] The connection terminal assembly 40 includes a low-voltage DC output terminal 41 and a high-voltage DC output terminal 42. The low-voltage DC output terminal 41 is electrically connected with the low-voltage output unit 212, and the high-voltage DC output terminal 42 is electrically connected with the high-voltage output unit 213.

[0044] The low-voltage DC output terminal 41 is used to output the converted low-voltage DC power of the power supply device 100 to the electrical equipment of the vehicle, and the high-voltage DC output terminal 42 is used to output the converted high-voltage DC power of the power supply device 100 to the electrical equipment of the vehicle. Optionally, the low-voltage DC output terminal 41 and the high-voltage DC output terminal 42 are arranged at the same side of the shell 10. The low-voltage DC output terminal 41 and the high-voltage DC output terminal 42 can be connected and fixed with the shell 10 by welding, bonding, clamping, screwing, riveting or the like. In other embodiments, the low-voltage DC output terminal 41 and the high-voltage DC output terminal 42 can also be arranged at the adjacent or opposite sides of the shell 10.

[0045] Optionally, the low-voltage DC output terminal 41 is welded with the corresponding welding point of the low-voltage output unit 212, and the high-voltage DC output terminal 42 is welded with the corresponding welding point of the high-voltage output unit 213, which can ensure firm and reliable connection and small contact resistance.

[0046] The power supply device 100 in the embodiment of the utility model, through the DC conversion part 211, low voltage output part 212 and high voltage output part 213 are integrated on the mainboard 21, can reduce the volume and weight of power supply device 100, be favorable to the integration and lightweight design of vehicle, power supply device 100 can provide the DC power supply of multiple different voltage simultaneously, satisfy the diversification power demand of different electric devices in vehicle.

[0047] In one embodiment, as shown in Figure 3 The circuit board assembly 20 further includes a low-voltage output filter board 22 and an adapter copper bar 23, and the low-voltage output filter board 22 is electrically connected to the low-voltage output part 212 through the adapter copper bar 23.

[0048] The low-voltage output filter board 22 is used to filter out high-frequency electrical noise generated by the high-number switch of the switching device, so that the output voltage is smoother and more stable, and the waveform of the output voltage can be shaped to reduce the fluctuation and distortion of the output voltage. The low-voltage output filter board 22 can adopt any feasible circuit board structure in the art without limitation.

[0049] Optionally, the low-voltage output filter board 22 can be arranged substantially in parallel with the mainboard 21. In the orthographic projection of the mainboard 21, the orthographic projection of the low-voltage output filter board 22 is located within the orthographic projection of the mainboard 21.

[0050] In other embodiments, the low-voltage output filter board 22 and the low-voltage output part 212 can also be electrically connected through a cable, a connecting sheet or any other feasible connecting structure without limitation.

[0051] In this way, the low-voltage output filter board 22 is electrically connected to the low-voltage output part 212 through the adapter copper bar 23, and the main circuit boards in the power supply device 100 are integrated into one, which can improve the degree of integration and reduce the installation space.

[0052] In one embodiment, as shown in Figure 3 The mainboard 21 further includes a shielding part 214, and the shielding part 214 is arranged between the low-voltage output part 212 and the high-voltage output part 213.

[0053] Since the high-frequency switching action of the power devices (such as IGBT, SiC MOSFET, etc.) in the high-voltage output part 213 will generate a steep voltage / current change and excite a high-frequency electromagnetic field, and some power devices in the low-voltage output part 212 are sensitive to electromagnetic noise and are prone to false triggering or data errors. By arranging the shielding part 214, the electromagnetic interference (EMI) between the low-voltage output part 212 and the high-voltage output part 213 can be solved through physical isolation and electromagnetic protection.

[0054] The shielding part 214 may be generally plate-shaped and extend along the boundary between the low-voltage output part 212 and the high-voltage output part 213. Optionally, the shielding part 214 and the substrate of the main board 21 may be an integral structure, or they may be connected and fixed by means of welding, bonding, snap-fitting, screwing, etc., without limitation.

[0055] Optionally, the shielding part 214 may be made of a material with superior conductivity or coated with a conductive coating to effectively reflect or absorb high-frequency electromagnetic waves. Specifically, the shielding part 214 may be made of metal or conductive composite materials. Metal materials may include copper foil, aluminum foil, etc., and conductive composite materials may include conductive rubber, etc., without limitation.

[0056] By providing the shielding part 214, electromagnetic interference between the low-voltage output part 212 and the high-voltage output part 213 in the power supply device 100 can be effectively reduced.

[0057] In one implementation, such as Figure 2 and Figure 3 As shown, the circuit board assembly 20 also includes a signal shield 24, which is connected to the low-voltage output section 212. In the orthographic projection of the motherboard 21, at least a portion of the signal shield 24 overlaps with the low-voltage DC output terminal 41.

[0058] The material of the signal shielding cover 24 is similar to that of the shielding part 214, and can be used as a reference without further description. Optionally, the signal shielding cover 24 and the substrate of the motherboard 21 can be connected and fixed by means of welding, bonding, snap-fitting, screwing, etc., without limitation.

[0059] Optionally, the signal shield 24 is generally a thin shell, and its shape can be hemispherical, cubic, conical, etc., without limitation.

[0060] In addition to being susceptible to electromagnetic interference from the high-voltage output unit 213, the low-voltage output unit 212 is also prone to interference from other electromagnetic devices in the power supply unit 100. By providing a signal shield 24, electromagnetic shielding can be provided at the connection point between the low-voltage output unit 212 and the low-voltage DC output terminal 41, preventing other electromagnetic devices from interfering with the signal output of the low-voltage output unit 212.

[0061] In one implementation, such as Figure 2 and Figure 3 As shown, the circuit board assembly 20 also includes an input filter board 25 and a shielding barrier 26. The input filter board 25 is spaced apart from the main board 21 and is located in the same plane as the main board 21. The shielding barrier 26 is disposed between the input filter board 25 and the main board 21.

[0062] The input filter board 25 is used to filter out high-frequency noise, spike pulses and other interference signals in the input power supply device 100, to provide clean and stable power input for the main board 21, thereby ensuring the normal operation of the vehicle power supply device 100. Optionally, the substrate of the input filter board 25 can be arranged in the same way as the substrate of the main board 21, and will not be described again.

[0063] The shielding barrier 26 is used to reduce electromagnetic interference between the input filter board 25 and the main board 21, to avoid the filtered signals from being disturbed again. Optionally, the shielding barrier 26 can be connected to the substrate of the input filter board 25 and / or the substrate of the main board 21, and the connection mode can be welding, bonding, clamping, screwing, riveting, magnetic attraction connection, etc., without limitation.

[0064] Optionally, in the first direction Z, the input filter board 25 and the main board 21 are located at the same height. In this way, the overall structure of the circuit board assembly 20 is more compact, facilitating installation and layout in the power supply device 100.

[0065] In this way, the shielding barrier 26 can reduce electromagnetic interference between the input filter board 25 and the main board 21, and the structure of the power supply device 100 is compact, which is beneficial to the miniaturization design of the power supply device 100. In addition, the modular design of the circuit board assembly 20 also facilitates the maintenance of the power supply device 100. When the input filter board 25 or the main board 21 fails, it can be replaced individually without the need to replace the entire power supply device 100, reducing maintenance cost and time.

[0066] In one embodiment, as shown in Figures 2 to 4 The housing 10 and the shielding portion 214 form a shielding cavity 12 therebetween, and the circuit board assembly 20 further includes an inductor 291 and a capacitor 292, the inductor 291 and the capacitor 292 are accommodated in the shielding cavity 12, the main board 21 covers the shielding cavity 12, and the inductor 291 and the capacitor 292 are both plugged into the high-voltage output portion 213.

[0067] Optionally, the entire or part of the housing 10 can be made of a material with high electrical conductivity and high magnetic permeability, and the housing 10 and the shielding portion 214 form a shielding cavity 12, which can effectively block the propagation of electromagnetic waves. Alternatively, the inner wall surface of the housing 10 (i.e. the surface of the housing 10 facing the accommodation cavity 11) is coated with a plating material (such as nickel plating, gold plating, etc.) to enhance the electrical conductivity of the housing 10.

[0068] The inductor 291 has the function of hindering the change of current, and can effectively inhibit the high-frequency noise current of the input power supply device 100. The capacitor 292 has the characteristics of storing and releasing charges, and can be used to absorb the surge voltage when the power device is turned off, filter differential mode / common mode noise, provide a low impedance loop, and the like, which can ensure stable, efficient and safe operation of the system. Optionally, the circuit board assembly 20 can include a plurality of inductors 291 and / or a plurality of capacitors 292, and the plurality of inductors 291 and / or the plurality of capacitors 292 are all plugged into the high-voltage output part 213.

[0069] Optionally, the shell 10 is provided with a shielding groove (not shown), which corresponds to the position of the high-voltage output part 213 in the first direction Z, and is used to accommodate at least part of the inductor 291 and / or the capacitor 292.

[0070] In this way, the power supply device 100 can effectively block the invasion of external electromagnetic interference, improve the anti-interference ability of the power supply device 100, reduce the mutual interference between internal circuits, and ensure that the performance indicators of the power supply device 100 are not affected.

[0071] In one embodiment, as shown in Figure 2 and Figure 3 The connection terminal assembly 40 further includes an external signal terminal 43 and a high-voltage input terminal 44, the external signal terminal 43 is electrically connected with the main board 21, and the high-voltage input terminal 44 is electrically connected with the input filter board 25.

[0072] The external signal terminal 43 is used to realize the communication and control signal transmission between the power supply device 100 and external equipment (such as a charging gun, a vehicle controller, etc.). Optionally, the external signal terminal 43 can adopt a pin type or a jack type structure, or any feasible external signal terminal 43 in the art, without limitation. Optionally, the external signal terminal 43 can be electrically connected with the main board 21 by welding, pressure connection, clamping, etc.

[0073] The high-voltage input terminal 44 is used to receive an external high-voltage power supply (in a vehicle, the high-voltage power supply usually comes from a battery pack or a generator), and stably transmit the high-voltage power supply to the input filter board 25, to provide a basis for subsequent power conversion and processing. Optionally, the high-voltage input terminal 44 can be electrically connected with the input filter board 25 by welding, plugging, clamping, etc.

[0074] In this way, the external signal terminal 43 and the high-voltage input terminal 44 work together to ensure the normal operation of the power supply device 100. The external signal terminal 43 transmits the running state information of the vehicle to the main board 21, and the main board 21 adjusts the output parameters of the power supply, such as voltage and current, according to these information. At the same time, the high-voltage input terminal 44 stably transmits the external high-voltage power supply to the input filter board 25, and the power supply after filtering is supplied to the main board 21 and other circuit modules. In the whole process, the two terminal assemblies cooperate with each other to ensure that the power supply device 100 can provide appropriate power according to the actual needs of the vehicle, and ensure the safety and stability of the power supply system.

[0075] In one embodiment, as shown in Figure 4 The circuit board assembly 20 further includes an OBC main board 27 and a transition board 28, the OBC main board 27 is arranged in parallel and spaced apart from the input filter board 25, and the OBC main board 27 and the input filter board 25 are electrically connected through the transition board 28.

[0076] The OBC (On-Board Charger, vehicle-mounted charger) main board 27 is the core control unit for realizing the charging function in the power supply device 100, and is responsible for converting the alternating current input from the external power supply (such as a charging pile) into direct current suitable for charging the vehicle battery, and accurately controlling and managing the charging process.

[0077] Optionally, in the first direction Z, the OBC main board 27 is approximately parallel to the input filter board 25.

[0078] The transition board 28 is used to realize the electrical connection between the OBC main board 27 and the input filter board 25. Specifically, the filtered alternating current output by the input filter board 25 can be transmitted to the OBC main board 27 through the transition board 28, and the OBC main board 27 converts the input alternating current into pulsating direct current. Optionally, the transition board 28 can be connected to the OBC main board 27 and the input filter board 25 by welding, plugging, clamping, bonding, etc.

[0079] Since the OBC main board 27 generates a large amount of heat during operation, the OBC main board 27 and the main board 21 are arranged in a spaced apart manner, which facilitates heat dissipation and helps to reduce the mutual influence of electromagnetic interference.

[0080] In one embodiment, as shown in Figures 1 to 3 The low-voltage direct-current output terminal 41, the high-voltage direct-current output terminal 42, the external signal terminal 43 and the high-voltage input terminal 44 are arranged on the same side of the housing 10, the low-voltage direct-current output terminal 41 is arranged between the high-voltage direct-current output terminal 42 and the high-voltage input terminal 44, and the external signal terminal 43 is arranged between the low-voltage direct-current output terminal 41 and the main board 21.

[0081] Optionally, in the first direction Z, the external signal terminal 43 is located above the low-voltage DC output terminal 41, and the high-voltage DC output terminal 42 and the high-voltage input terminal 44 are located at substantially the same height.

[0082] In this way, the connection terminal assembly 40 is arranged on the same side of the housing 10, so that the connection of the cable is more concentrated, facilitating the installation and maintenance of the power supply device 100. In addition, the same side layout can avoid the connection terminals being arranged at different positions of the housing 10, thereby reducing the overall size of the housing 10 and making the power supply device 100 more compact.

[0083] In other embodiments, the low-voltage DC output terminal 41, the high-voltage DC output terminal 42, the external signal terminal 43, and the high-voltage input terminal 44 can also be arranged on two adjacent or opposite sides of the housing 10, without limitation.

[0084] In one embodiment, please refer to Figure 4 In the first direction Z, the power supply device 100 further comprises a heat dissipation structure 30, which is accommodated in the accommodation cavity 11 and connected with the housing 10.

[0085] Optionally, as Figure 4 shown, the power supply device 100 further comprises a first magnetic element 293 and a second magnetic element 294, both of which are in thermally conductive connection with the heat dissipation structure 30. The first magnetic element 293 is electrically connected with the main board 21, and the second magnetic element 294 is electrically connected with the OBC main board 27.

[0086] Optionally, the heat dissipation structure 30 has a first accommodating groove (not shown) and a second accommodating groove (not shown) at opposite ends in the first direction Z. Optionally, the first magnetic element 293 is accommodated in the first accommodating groove, and the second magnetic element 294 is accommodated in the second accommodating groove.

[0087] Optionally, the heat dissipation structure 30 has a first water channel and a second water channel stacked in the first direction Z, both of which are three-dimensional water channels. The first water channel surrounds the side wall of the first accommodating groove, and the second water channel surrounds the side wall of the second accommodating groove. Optionally, the opening direction of the first accommodating groove is opposite to that of the second accommodating groove.

[0088] The first magnetic element 293 and the second magnetic element 294 include but are not limited to core magnetic elements such as transformers and inductors 291, which realize the conversion, transmission and regulation of electric energy through electromagnetic induction principle, so as to realize the efficient and stable operation of the power supply device 100.

[0089] In this way, the first magnetic element 293 and the second magnetic element 294 are arranged in the first accommodating groove and the second accommodating groove of the heat dissipation structure 30, respectively, so that the internal space of the power supply device can be fully utilized, and the cooling medium can flow three-dimensionally in the first water channel and the second water channel to dissipate heat of the first magnetic element 293 and the second magnetic element 294, so that the contact area is large, and the heat dissipation effect can be improved.

[0090] In an embodiment, the first magnetic element 293 includes a DC transformer, and the second magnetic element 294 includes an OBC transformer and a PFC inductor.

[0091] The DC transformer is a functional device of the DC-DC converter, and is responsible for converting between different DC voltage levels. Optionally, the DC transformer is used to convert high-voltage DC voltage into low-voltage DC voltage. In some other embodiments, the DC transformer can also be used to convert low-voltage DC voltage into high-voltage DC voltage.

[0092] The OBC transformer is responsible for converting AC grid voltage into DC voltage to charge the power battery of the vehicle. The OBC transformer plays a role of voltage conversion and electrical isolation in the OBC charger, and can ensure the safety and efficiency of the charging process.

[0093] The PFC (Power Factor Correction) inductor is used to improve the power factor of the power supply device 100, reduce the loss of reactive power, and improve the energy utilization efficiency. The PFC inductor can ensure that the device meets the power factor requirements of the power grid, and improve the system stability of the power supply device 100.

[0094] In this way, the DC transformer, the OBC transformer and the PFC inductor are arranged as heat generating devices with large heat generation, and the heat dissipation structure 30 can dissipate heat generated by the DC transformer, the OBC transformer and the PFC inductor during operation in time, so as to ensure the use safety of the power supply device 100.

[0095] In the description of the embodiments of the utility model, it should be explained that the orientation or position relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like described based on the drawings is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0096] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the utility model right scope, and the person skilled in the art can understand that all or part of the processes of the above embodiment are realized, and equivalent changes made according to the utility model right claim still belong to the range covered by the utility model.

Claims

1. A power supply device (100), characterized in that, include: The housing (10) has a receiving cavity (11); A circuit board assembly (20) is housed in the receiving cavity (11). The circuit board assembly (20) includes a main board (21), which integrates a DC converter (211), a low-voltage output (212), and a high-voltage output (213). The low-voltage output (212) and the high-voltage output (213) are both electrically connected to the DC converter (211). The connection terminal assembly (40) includes a low-voltage DC output terminal (41) and a high-voltage DC output terminal (42), wherein the low-voltage DC output terminal (41) is electrically connected to the low-voltage output section (212) and the high-voltage DC output terminal (42) is electrically connected to the high-voltage output section (213).

2. The power supply device (100) according to claim 1, characterized in that, The circuit board assembly (20) also includes a low-voltage output filter board (22) and a connecting copper busbar (23), wherein the low-voltage output filter board (22) is electrically connected to the low-voltage output section (212) through the connecting copper busbar (23).

3. The power supply device (100) according to claim 1, characterized in that, The motherboard (21) also includes a shielding part (214), which is disposed between the low-voltage output part (212) and the high-voltage output part (213).

4. The power supply device (100) according to claim 2, characterized in that, The circuit board assembly (20) also includes a signal shield (24) connected to the low-voltage output section (212). In the orthographic projection of the motherboard (21), at least a portion of the signal shield (24) overlaps with the low-voltage DC output terminal (41).

5. The power supply device (100) according to claim 1, characterized in that, The circuit board assembly (20) further includes an input filter board (25) and a shielding barrier (26). The input filter board (25) is spaced apart from the main board (21) and is located in the same plane as the main board (21). The shielding barrier (26) is disposed between the input filter board (25) and the main board (21).

6. The power supply device (100) according to claim 3, characterized in that, A shielding cavity (12) is formed between the housing (10) and the shielding part (214). The circuit board assembly (20) also includes an inductor (291) and a capacitor (292). The inductor (291) and the capacitor (292) are housed in the shielding cavity (12). The main board (21) is covered by the shielding cavity (12), and the inductor (291) and the capacitor (292) are both plugged into the high voltage output part (213).

7. The power supply device (100) according to claim 5, characterized in that, The connection terminal assembly (40) further includes an external signal terminal (43) and a high-voltage input terminal (44). The external signal terminal (43) is electrically connected to the motherboard (21), and the high-voltage input terminal (44) is electrically connected to the input filter board (25).

8. The power supply device (100) according to claim 5, characterized in that, The circuit board assembly (20) also includes an OBC main board (27) and an adapter board (28). The OBC main board (27) is parallel to and spaced apart from the input filter board (25). The OBC main board (27) and the input filter board (25) are electrically connected through the adapter board (28).

9. The power supply device (100) according to claim 7, characterized in that, The low-voltage DC output terminal (41), the high-voltage DC output terminal (42), the external signal terminal (43), and the high-voltage input terminal (44) are all located on the same side of the housing (10). The low-voltage DC output terminal (41) is located between the high-voltage DC output terminal (42) and the high-voltage input terminal (44). The external signal terminal (43) is located between the low-voltage DC output terminal (41) and the motherboard (21).

10. A vehicle, characterized in that, The device includes a vehicle body, electrical components, and a power supply device (100) as described in any one of claims 1 to 9. The power supply device (100) is disposed within the vehicle body and is used to receive alternating current and convert the alternating current into direct current and output it to the electrical components to supply power to the electrical components.

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