Charger and vehicle

Abstract

A kind of charger and vehicle, charger includes housing, heat dissipation module and power module, housing is formed with accommodating cavity;Heat dissipation module is housed in accommodating cavity, heat dissipation module includes heat dissipation piece and insert, heat dissipation module is formed with water channel groove, at least part of insert extends into water channel groove;Power module includes power device, power device is housed in accommodating cavity, and is connected with heat dissipation module by heat-conducting piece with heat conduction.The charger in the utility model can promptly cool power device, and heat dissipation efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a charger and a vehicle. Background Technology

[0002] In recent years, with the rapid development of new energy electric vehicles, energy conservation, environmental protection, safety, and lightweighting will become the main development directions for future new energy electric vehicles. Among them, the on-board charger in new energy electric vehicles has the ability to safely and automatically fully charge the electric vehicle's power battery. Based on the data provided by the Battery Management System (BMS), the charger can dynamically adjust the charging current or voltage parameters, execute corresponding actions, and complete the charging process.

[0003] The power devices in a charger generate a lot of heat when they are working, and they need to be cooled down in a timely manner. Summary of the Invention

[0004] The purpose of this invention is to provide a method for timely heat dissipation of power devices in a charger.

[0005] To achieve the objectives of this utility model, the following technical solution is provided: In a first aspect, the present invention provides a charger, comprising a housing, a heat dissipation module, and a power module. The housing forms a receiving cavity; the heat dissipation module is received in the receiving cavity, the heat dissipation module includes a heat dissipation element and an insert, the heat dissipation module forms a water channel, and at least a portion of the insert extends into the water channel; the power module includes a power device, the power device is received in the receiving cavity, and is thermally conductively connected to the heat dissipation module through a heat-conducting element.

[0006] In one embodiment, the power module further includes a power board, and the power devices are attached to the surface of the power board facing the heat dissipation module.

[0007] In one embodiment, the insert includes a sealing portion and a protrusion. The sealing portion is connected around the protrusion. The sealing portion is connected to the heat sink and seals the opening of the water channel. The protrusion extends into the water channel. The insert and the heat sink together form a three-dimensional water channel.

[0008] In one embodiment, the heat dissipation module includes a top surface facing the opening of the receiving cavity, and the protrusion has a heat dissipation groove formed from one end away from the top surface, the opening of the heat dissipation groove facing the same direction as the opening of the water channel groove.

[0009] In one embodiment, the heat dissipation module further includes a water channel cover plate, which closes the opening of the water channel groove, and the water channel cover plate and the heat dissipation component together form a three-dimensional water channel.

[0010] In one embodiment, the insert includes a protrusion and a connecting portion. The protrusion is connected to the waterway cover and has a gap with the inner wall of the waterway. The connecting portion is connected to and protrudes from the outer peripheral surface of the protrusion and abuts against the inner wall of the waterway.

[0011] In one embodiment, the housing includes a bottom shell and a cover plate. The bottom shell surrounds the receiving cavity, and the cover plate is connected to one end of the bottom shell and closes the opening of the receiving cavity. One of the cover plate and the bottom shell is provided with a fixing hole, and the other is provided with a fixing part. The fixing part is engaged with the fixing hole to connect the cover plate and the bottom shell.

[0012] In one embodiment, the power module further includes an auxiliary power supply, which is connected to the power board and housed in the housing cavity, and the auxiliary power supply is thermally conductively connected to the heat dissipation module.

[0013] In one embodiment, the power module further includes a main magnetic component, and the end of the heat dissipation module facing away from the opening of the water channel also has a receiving groove, the water channel surrounds the side wall of the receiving groove, and the main magnetic component is housed in the receiving groove.

[0014] Secondly, this utility model also provides a vehicle, including a vehicle body, electrical components, and a charger as described in any one of the various embodiments of the first aspect. The charger is disposed within the vehicle body and is used to receive alternating current and convert the alternating current into direct current for output to the electrical components to supply power to the electrical components.

[0015] By setting the heat dissipation module to include a heat sink and an insert, with at least a portion of the insert extending into the water channel of the heat sink, the insert can reduce the volume of the cooling medium in the water channel, allowing the cooling medium to flow close to the wall of the heat sink. The heat of the power device can be transferred to the heat dissipation module in a timely manner through the heat-conducting component, resulting in high heat dissipation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is an exploded schematic diagram of a charger according to one embodiment; Figure 2 This is a perspective view of a portion of the structure of a charger according to one embodiment; Figure 3 This is a cross-sectional schematic diagram of a portion of the structure of a charger according to one embodiment; Figure 4 This is a bottom view of a charger according to one embodiment; Figure 5 This is a cross-sectional schematic diagram of a portion of the charger according to another embodiment; Figure 6 This is a perspective view of a heat-conducting component according to one embodiment.

[0018] Explanation of reference numerals in the attached figures: 100-Charger; 10-Shell, 11-Receiving cavity, 12-Bottom wall, 13-Side peripheral wall, 14-Cover plate, 15-Fixing hole, 16-Fixing part; 20-Heat dissipation module, 21-Heat dissipation component, 211-Water channel, 212-Top surface, 213-First side surface, 214-Second side surface, 215-Heat dissipation protrusion, 22-Installation piece, 221-Sealing part, 222-Protrusion, 223-Heat dissipation groove, 224-Connecting part, 23-Water channel cover plate, 24-Accommodation groove; 30-Power module, 31-Power device, 32-Power board, 33-Auxiliary power supply, 34-Capacitor, 35-Main magnetic component, 36-Heat-conducting component; 40 - Water tap. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0021] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please refer to Figures 1 to 6 This utility model provides a vehicle, including a vehicle body (not shown), electrical components (not shown), and a charger 100 in the embodiment of this utility model. The charger 100 is disposed in the vehicle body and is used to receive AC power and convert AC power into DC power to output to the electrical components to power them.

[0024] The vehicle may be an electric vehicle or a hybrid electric vehicle, and the vehicle body includes, but is not limited to, the chassis. The electrical components include, but are not limited to, headlights, display instruments, air conditioning, and audio systems, and are mounted on the vehicle body.

[0025] Optionally, the charger 100 can be connected and fixed to the vehicle body by means of welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without limitation. The charger 100 can output DC power to power the electrical devices.

[0026] Optionally, the vehicle may also include a power battery. The charger 100 can receive a first alternating current (AC) signal and output a first direct current (DC) signal, thereby converting the AC input signal into high-voltage direct current required by the power battery, thus supplying power to the power battery. The charger 100 is connected to the vehicle's power battery. The charger 100 can convert the high-voltage direct current input from the power battery into low-voltage direct current, thereby drawing power from the power battery and supplying power to the vehicle's electrical components.

[0027] The vehicle in this embodiment of the present invention uses the charger 100, which supplies power to the electrical components. While achieving high power density, the charger 100 can dissipate the heat generated during operation in a timely manner, ensuring the safety of the charger 100 in use.

[0028] The charger 100 in the embodiments of this utility model will be described in detail below.

[0029] Please refer to Figures 1 to 6 This utility model provides a charger 100, including a housing 10, a heat dissipation module 20 and a power module 30. The housing 10 has a receiving cavity 11 with one end open.

[0030] The shell 10 can be made of a material with high structural strength, specifically metal, high-strength plastic, ceramic, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys. The shell 10 can be a one-piece structure, meaning it is manufactured using a single molding process, such as stamping or casting, without limitation. Alternatively, the shell 10 can be a modular structure, with its parts connected and fixed by welding, bonding, snap-fitting, screwing, etc.

[0031] In one embodiment, such as Figure 2 As shown, the housing 10 includes a bottom shell, which includes a bottom wall 12 and a side peripheral wall 13. The side peripheral wall 13 is connected to the periphery of the bottom wall 12 and together with the bottom wall 12, encloses the receiving cavity 11.

[0032] The bottom shell can be a one-piece structure or a split structure. The bottom wall 12 and the side peripheral walls 13 can be connected and fixed by welding, bonding, snap-fitting, screwing, etc. Optionally, the bottom wall 12 can be circular, rectangular, square, polygonal, etc., without limitation. The side peripheral walls 13 are connected to the bottom wall 12 around the perimeter and together with the bottom wall 12 enclose a cylindrical, prismatic, etc. shape, without limitation.

[0033] Optionally, the housing 10 also includes a cover plate 14, which is connected to one end of the bottom housing and closes the opening of the receiving cavity 11.

[0034] Optionally, the cover plate 14 is connected to the end of the side peripheral wall 13 away from the bottom wall 12 and closes the opening of the receiving cavity 11.

[0035] In one embodiment, such as Figure 1 As shown, one of the cover plate 14 and the bottom shell is provided with a fixing hole 15, and the other is provided with a fixing part 16. The fixing part 16 is connected to the fixing hole 15 to connect the cover plate 14 and the bottom shell.

[0036] The shapes of the fixing hole 15 and the fixing part 16 are not specifically limited. Optionally, the fixing hole 15 can be circular, directional, triangular, regular polygonal, etc., and the shape of the fixing part 16 can correspond to the shape of the fixing hole 15.

[0037] Optionally, the cover plate 14 is provided with a fixing hole 15, and a fixing part 16 is provided at the end of the side wall away from the bottom wall 12; or, in another embodiment, the cover plate 14 is provided with a fixing part 16, and the side wall is provided with a fixing hole 15, without limitation.

[0038] When the cover plate 14 is connected to the bottom shell, the fixing part 16 extends into the fixing hole 15, which can provide accurate positioning for the connection between the cover plate 14 and the bottom shell, and no additional connection structure is required, making installation convenient.

[0039] The heat dissipation module 20 is housed in the receiving cavity 11 and connected to the housing 10.

[0040] The heat dissipation module 20 is used to flow a cooling medium to exchange heat with the device. In some embodiments, the heat dissipation module 20 may be a three-dimensional water channel, a planar water channel, a flow channel plate, etc., and there is no specific limitation. The cooling medium may be water, ethylene glycol solution, mineral oil, fluorinated liquid, deionized water, etc., or it may be a gaseous heat transfer medium such as air, and there is no specific limitation.

[0041] Optionally, the heat dissipation module 20 can be fixedly connected to the housing 10, or the heat dissipation module 20 and the housing 10 can be detachably connected. The heat dissipation module 20 and the housing 10 can be connected by welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., and there are no specific restrictions.

[0042] In one embodiment, such as Figure 1 and Figure 2 As shown, the charger 100 also includes a water nozzle 40 for conveying a cooling medium. Optionally, there are two water nozzles 40, which are spaced apart on the side peripheral wall 13 and are both connected to the heat dissipation module 20.

[0043] In one embodiment, such as Figure 2 and Figure 3 As shown, the heat dissipation module 20 has a three-dimensional flow channel and includes a top surface 212 with an opening facing the receiving cavity 11.

[0044] The three-dimensional flow channel can be a U-shaped three-dimensional waterway, multiple U-shaped three-dimensional waterways connected in parallel or in series, an S-shaped waterway, etc., without any restrictions.

[0045] In one embodiment, such as Figure 2 and Figure 3 As shown, the heat dissipation module 20 includes a heat dissipation component 21 and an insert 22. The heat dissipation component 21 has a water channel 211, and at least a portion of the insert 22 extends into the water channel 211.

[0046] The heat sink 21 is connected to the bottom wall 12 and protrudes from the bottom wall 12. The opening of the water channel 211 is opposite to the opening of the receiving cavity 11. The insert 22 is connected to the heat sink 21 and closes the opening of the water channel 211 to form a three-dimensional water channel.

[0047] In one embodiment, the heat sink 21 and the housing 10 are integrally formed, that is, the heat sink 21 protrudes from the bottom wall 12 toward the opening of the receiving cavity 11. With this configuration, the housing 10 simultaneously provides mechanical protection and partial heat dissipation, resulting in a compact structure, reduced assembly steps, and improved production efficiency.

[0048] Alternatively, the heat sink 21 and the bottom wall 12 can also be separate structures, and the two can be connected and fixed by welding, bonding, snap-fitting, screwing, riveting, etc., without any restrictions.

[0049] Optionally, the opening of the water channel 211 faces away from the top surface 212 (i.e., the opening of the water channel 211 is opposite to the opening of the receiving cavity 11).

[0050] Optionally, the top surface 212 of the heat sink 21 is parallel to the surface of the bottom wall 12 facing the opening of the receiving cavity 11, so that the power device 31 can be thermally conductively connected to the heat sink 21. Optionally, such as... Figure 3 As shown, the opening of the water channel 211 is flush with the surface of the bottom wall 12 of the housing 10 facing away from the opening of the receiving cavity 11. With this configuration, the insert 22 closes the opening of the water channel 211 and forms a three-dimensional water channel, and the opening of the water channel 211 is opposite to the opening of the receiving cavity 11. This allows the power device to be attached to the power module 30 and placed inside the receiving cavity 11, and the insert 22 and the heat sink 21 to be assembled. The assembly is flexible and can prevent accidentally leaked cooling medium from flowing into the receiving cavity 11.

[0051] Please refer to Figure 2 and Figure 3 The power module 30 includes a power device 31, which is housed in the housing cavity 11 and is thermally conductively connected to the top surface via a heat-conducting element 36.

[0052] The power module 30 is used to efficiently and controllably convert the input AC power into DC power to meet the battery's requirements. The power device 31 can be at least one metal-oxide-semiconductor (MOS) field-effect transistor, a full-bridge power module, a half-bridge power module, or any other feasible power component. The MOS transistor is the basic unit for constructing various complex circuits. The basic structure of a MOS transistor mainly includes a source, a drain, and a gate. The source and drain of a MOS transistor are formed through high doping, and depending on the device type, they can be divided into n-type doped (NMOS) and p-type doped (PMOS). The field-effect transistor provided in this embodiment can be, but is not limited to, N-channel enhancement-mode or P-channel enhancement-mode MOS transistors. The field-effect transistor can be, but is not limited to, high-power, medium-power, or low-power MOS transistors. A full-bridge power module is a power conversion unit consisting of four power switching devices (e.g., four field-effect transistors), while a half-bridge power module is a power conversion unit consisting of two power switching devices (e.g., two field-effect transistors). Both can achieve DC-AC conversion or voltage regulation by alternating conduction of multiple power switching devices.

[0053] Taking the power device 31 as a full-bridge power module as an example, in a specific embodiment, the full-bridge power module includes a first circuit bridge arm, a second circuit bridge arm, and a first capacitor bridge arm; wherein, the first circuit bridge arm includes a first upper-side chip unit and a first lower-side chip unit, the first end of the first upper-side chip unit and the second end of the first lower-side chip unit are electrically connected through a metal structure, the second circuit bridge arm includes a second upper-side chip unit and a second lower-side chip unit, the first end of the second upper-side chip unit and the second end of the second lower-side chip unit are electrically connected through a metal structure, and the first circuit bridge arm and the second circuit bridge arm are arranged asymmetrically. The second terminals of both the first upper-side MOSFET chip unit and the second terminal of both upper-side MOSFET chip units are electrically connected to the DC positive terminal via a metal structure. The first terminals of both lower-side MOSFET chip units are electrically connected to the DC negative terminal via a metal structure. The first terminal of the first capacitor bridge arm is coupled to the DC positive terminal, and the second terminal of the first capacitor bridge arm is coupled to the DC negative terminal. The first capacitor bridge arm is positioned close to the first upper-side MOSFET chip unit and the first lower-side MOSFET chip unit to reduce the commutation loop between them. This configuration reduces the package size of the power module while ensuring the overall commutation performance of the circuit.

[0054] The power device 31 can be, but is not limited to, a switching element of the charger 100. Understandably, the power device 31 can also be used to control the magnitude of the current, or as a variable resistor, or as a constant current source, etc. The function of the power module should not be a limitation on the charger 100 provided in this embodiment.

[0055] The number of power devices 31 can be, but is not limited to, one, two, three, or more. The number of power devices 31 can be adjusted according to the actual application requirements of the charger 100. It should be understood that the number of power devices 31 should not be a limitation on the charger 100 provided in this embodiment. In the schematic diagram of the embodiment of this application, an example of multiple power devices 31 is used for illustration. Optionally, when there are multiple power devices 31, in the orthographic projection of the bottom wall 12, the orthographic projections of multiple power devices 31 all coincide with the orthographic projection of the heat dissipation module 20.

[0056] The power device 31 can be, but is not limited to, attached to the heat dissipation module 20, so that the heat generated by the power device 31 during operation can be transferred to the heat dissipation module 20 for effective heat dissipation. In some embodiments, the power device 31 can also be at a certain distance from the heat dissipation module 20, with other heat dissipation media conducting the heat from the power device 31 to the heat dissipation module 20 for heat dissipation.

[0057] Optionally, the power device 31 is in close contact with the top surface 212; or, the power device 31 is connected to the top surface 212 via a heat-conducting component 36. The power device 31 can be connected to the top surface 212 by means of bonding, welding, etc., or it can be in close contact with the heat dissipation module 20 via other structures such as spring clips; there are no specific limitations. Optionally, the power device 31 can also be attached to the top surface 212 via the heat-conducting component 36.

[0058] In some other embodiments, the power device 31 may also be thermally conductively connected to other parts of the heat dissipation module 20.

[0059] In one specific embodiment, the heat-conducting element 36 may be a substrate, which may be a ceramic substrate, a metal substrate, a composite material substrate, or any other feasible material with high thermal conductivity. No specific limitation is imposed.

[0060] With this configuration, the power device 31 can directly or through the heat-conducting component 36 conduct heat to the top surface 212 of the heat dissipation module 20, thereby improving heat dissipation efficiency.

[0061] In one specific embodiment, the three-dimensional water channel includes a first water channel (not shown), a second water channel (not shown), and a third water channel (not shown) connected in sequence. The first water channel and the third water channel are opposite to each other and spaced apart. The surfaces of the first water channel, the second water channel, and the third water channel facing the opening of the receiving cavity 11 together form a top surface 212. A plurality of power devices 31 are respectively in close contact with the surfaces of the first water channel facing the opening of the receiving cavity 11 and the surfaces of the third water channel facing the opening of the receiving cavity 11. Optionally, at least some of the plurality of power devices 31 may also be in close contact with the surface of the second water channel facing the opening of the receiving cavity 11.

[0062] With this configuration, when there are multiple power devices 31, the multiple power devices 31 can be arranged around the heat dissipation module 20 and dissipate heat through the heat dissipation module 20, thereby improving heat dissipation efficiency.

[0063] In this embodiment of the utility model, the heat dissipation module 20 includes a heat dissipation component 21 and an insert 22, and at least a portion of the insert 22 extends into the water channel 211 of the heat dissipation component 21. The insert 22 can reduce the volume of the cooling medium in the water channel 211, so that the cooling medium flows close to the wall of the heat dissipation component 21. The heat of the power device 31 can be transferred to the heat dissipation module 20 in a timely manner through the heat conduction component 36, resulting in high heat dissipation efficiency.

[0064] In one embodiment, such as Figure 3 As shown, the heat sink 21 includes a first side 213 and a second side 214 facing away from each other. Both the first side 213 and the second side 214 are connected to the top surface 212 and the bottom wall 12. From the end of the heat sink 21 connected to the bottom wall 12 to the end of the heat sink 21 away from the bottom wall 12, the distance between the first side 213 and the second side 214 gradually decreases.

[0065] Both the first side surface 213 and the second side surface 214 can be any combination of one or more of the following: plane, folded surface, and curved surface, without restriction. It can be understood that both the first side surface 213 and the second side surface 214 are part of the outer peripheral surface of the heat sink 21, and the wall thickness of the two side walls of the heat sink 21 can be approximately uniform at all points, that is, from the end of the heat sink 21 connected to the bottom wall 12 to the end of the heat sink 21 away from the bottom wall 12, the distance between the two side walls of the water channel 211 also gradually decreases.

[0066] Optionally, the distance between the first side 213 and the second side 214 can decrease gradually, either uniformly or abruptly, without limitation. Optionally, the shape of the insert 22 is adapted to the shape of the heat sink 21, that is, from the end of the heat sink 21 connected to the bottom wall 12 to the end of the heat sink 21 away from the bottom wall 12, the distance between the two opposite sides of the insert 22 also gradually decreases.

[0067] With this configuration, the tilted first side 213 and second side 214 can increase the heat dissipation area of ​​the side wall of the heat sink 21, while reducing the internal space occupied by the heat sink 21 in the charger 100.

[0068] Optional, such as Figure 3 As shown, multiple heat dissipation protrusions 215 are spaced apart on the bottom wall 12 of the water channel 211. The heat dissipation protrusions 215 are used to increase the heat dissipation area of ​​the heat sink 21. Optionally, the heat dissipation protrusions 215 can be streamlined to reduce water resistance.

[0069] In one embodiment, the power module 30 further includes a power board 32, and power devices 31 are attached to the surface of the power board 32 facing the heat dissipation module 20.

[0070] The power board 32 can be, but is not limited to, a printed circuit board. The power board 32 covers the opening of the receiving cavity 11. In the orthographic projection of the bottom wall 12, the orthographic projections of the heat dissipation module 20 and the power device 31 are both located within the orthographic projection of the power board 32.

[0071] Optionally, the power device 31 can be connected and fixed to the power board 32 by means of welding, bonding, snap-fitting, screwing, etc., and there are no specific restrictions.

[0072] With this configuration, in addition to transferring heat to the heat dissipation module 20 for heat dissipation, the power device 31 can also utilize the heat dissipation copper foil or metal substrate of the power board 32 to assist in heat dissipation of the power device 31 and the power board 32, thereby improving heat dissipation efficiency.

[0073] In one embodiment, such as Figure 3 As shown, the insert 22 includes a sealing part 221 and a protrusion 222. The sealing part 221 is connected to the periphery of the protrusion 222. The sealing part 221 is connected to the heat sink 21 and seals the opening of the water channel 211. The protrusion 222 extends into the water channel 211. The insert 22 and the heat sink 21 together form a three-dimensional water channel.

[0074] The insert 22 can be a one-piece structure, meaning it is a one-piece structure manufactured using a molding process, such as stamping, casting, or injection molding, without limitation. Alternatively, the insert 22 can be a separate structure, where the sealing part 221 and the protrusion 222 can be connected and fixed by welding, bonding, snap-fitting, screwing, or other methods.

[0075] Optionally, the top surface 212 of the heat sink 21 is parallel to the surface of the bottom wall 12 facing the opening of the receiving cavity 11, so that the power device 31 can be thermally conductively connected to the heat sink 21. Optionally, such as... Figure 3 As shown, the opening of the water channel 211 is flush with the surface of the bottom wall 12 of the housing 10 facing away from the opening of the receiving cavity 11.

[0076] The heat sink 21 and the insert 22 can be an integral structure or a separate structure, without limitation. The insert 22 can be an elastic member or a rigid member, as long as it can achieve a sealed connection with the heat sink 21, without specific limitations. In a specific embodiment, the insert 22 can be connected and fixed to the heat sink 21 by friction welding.

[0077] Optionally, the surface of the insert 22 facing away from the opening of the receiving cavity 11 is flush with the surface of the heat sink 21 at the opening of the water channel 211. With this arrangement, the outer surface of the charger 100 is formed as a whole, which has good integrity, simple process and low cost.

[0078] The cross-sectional shape of the protrusion 222 (in the orthographic projection along the extension direction of the three-dimensional water channel) can be rectangular, square, semi-circular, trapezoidal, triangular, etc., without limitation. Optionally, the shape of the protrusion 222 can be adapted to the shape of the heat sink 21.

[0079] By setting the protrusion 222, the position of the three-dimensional water channel can be closer to the wall of the heat sink 21. When the cooling medium flows in the three-dimensional water channel, it can better dissipate heat from the positions of heat-generating devices such as the power device 31 and the auxiliary power supply 33, resulting in high heat dissipation efficiency.

[0080] In one embodiment, such as Figure 3 and Figure 4 As shown, the protrusion 222 has a heat dissipation groove 223 at one end away from the top surface 212, and the opening of the heat dissipation groove 223 faces the same direction as the opening of the water channel 211.

[0081] There may be one heat dissipation groove 223, and the shape of the heat dissipation groove 223 corresponds to that of the water channel 211; or there may be multiple heat dissipation grooves 223, which are spaced apart at the end of the protrusion 222 away from the top surface 212, without limitation.

[0082] With this configuration, compared to the surface of the protrusion 222 facing away from the top surface 212 being flat, the setting of the heat dissipation groove 223 can increase the surface area of ​​the protrusion 222, and the heat transferred from the heat-generating device to the cooling medium can be further and quickly dissipated through the side wall of the heat dissipation groove 223, thereby improving the heat dissipation efficiency.

[0083] In another embodiment, please refer to Figure 5 and Figure 6 The heat dissipation module 20 also includes a water channel cover plate 23, which closes the opening of the water channel groove 211. The water channel cover plate 23 and the heat dissipation component 21 together enclose the three-dimensional water channel.

[0084] Optionally, the insert 22 is housed within the water channel 211, and one end of the insert 22 away from the top surface 212 is connected to the water channel cover 23.

[0085] With this configuration, the water channel cover 23 and the heat sink 21 together enclose the three-dimensional water channel, and the insert 22 is housed in the water channel 211 to reduce the volume of the water channel 211. This allows the three-dimensional water channel to be positioned closer to the top surface 212, the first side surface 213, and the second side surface 214 of the heat sink 21. When the cooling medium flows in the three-dimensional water channel, it can better dissipate heat from the positions of heat-generating devices such as the power device 31 and the auxiliary power supply 33, resulting in high heat dissipation efficiency.

[0086] In one implementation, such as Figure 5 and Figure 6 As shown, the insert 22 includes a protrusion 222 and a connecting portion 224. The protrusion 222 is connected to the waterway cover plate 23 and has a gap with the inner wall of the waterway trough 211. The connecting portion 224 is connected to and protrudes from the outer peripheral surface of the protrusion 222 and abuts against the inner wall of the waterway trough 211.

[0087] The protrusion 222 and the connecting part 224 can be an integral structure or a separate structure, without limitation. There can be one or more connecting parts 224, without limitation. Optionally, there can be multiple connecting parts 224, which are spaced apart on the outer peripheral surface of the protrusion 222, and all of the multiple connecting parts 224 abut against the inner wall of the water channel 211.

[0088] With this configuration, the insert 22 can be fixed in its relative position to the heat sink 21 by the connecting part 224, without the need for additional connecting structures, making installation convenient.

[0089] In one embodiment, such as Figure 1 As shown, the power module 30 also includes an auxiliary power supply 33, which is connected to the power board 32 and housed in the housing cavity 11. The auxiliary power supply 33 is thermally conductively connected to the heat dissipation module 20.

[0090] The auxiliary power supply 33 provides the necessary multi-channel isolated low-voltage DC power to the control circuits (DSP / MCU), drive circuits, sampling circuits, communication interfaces, fans, etc. on the power board 32. Optionally, the auxiliary power supply 33 is provided by a small-power flyback or LLC switching power supply module, drawing power directly from the input AC or intermediate DC bus. The auxiliary power supply 33 can also adopt any other feasible structure capable of providing low-voltage DC power; there are no specific limitations.

[0091] Optionally, the auxiliary power supply 33 can be connected and fixed to the power board 32 by means of welding, bonding, snap-fitting, screwing, etc., and there are no specific restrictions.

[0092] In this embodiment of the utility model, the power board 32, the power device 31 and the auxiliary power supply 33 are integrated into a power module 30, and the power device 31 and the auxiliary power supply 33 are both thermally conductively connected to the heat dissipation module 20. The heat dissipation module 20 can dissipate heat from the power device 31 and the auxiliary power supply 33 at the same time, which has high heat dissipation efficiency and eliminates the need to dissipate heat from the power device 31 and the auxiliary power supply 33 separately, thereby improving the utilization rate of the internal space of the charger 100.

[0093] In one embodiment, such as Figure 1 As shown, the charger 100 also includes a main magnetic component 35, and the end of the heat dissipation module 20 facing away from the opening of the water channel 211 also has a receiving groove 24. The water channel 211 surrounds the side wall of the receiving groove 24, and the main magnetic component 35 is housed in the receiving groove 24.

[0094] The main magnetic component 35 includes, but is not limited to, core magnetic components such as transformers and inductors. It realizes the conversion, transmission and regulation of electrical energy through the principle of electromagnetic induction, so as to achieve efficient and stable operation of the charger 100.

[0095] With this configuration, the main magnetic component 35 is placed in the receiving slot 24 of the heat dissipation module 20, which can make full use of the internal space of the charger 100. The cooling medium can flow in three dimensions within the three-dimensional water channel of the heat dissipation module 20 to dissipate heat from the main magnetic component 35. The contact area is large, which can improve the heat dissipation effect.

[0096] In one embodiment, such as Figure 1 As shown, the power module 30 also includes a capacitor 34, which is connected to the power board 32 and housed in the housing cavity 11. The capacitor 34 is thermally conductively connected to the heat dissipation module 20. An auxiliary power supply 33 and a capacitor 34 are respectively provided on opposite sides of the heat dissipation module 20.

[0097] The capacitor 34 can be used to absorb surge voltage when the power device 31 is turned off, filter differential / common mode noise, and provide a low impedance circuit, thus ensuring stable, efficient, and safe operation of the system. Optionally, the capacitor 34 may include multiple capacitors, all of which are connected to the power board 32 and housed in the housing cavity 11.

[0098] Optionally, one of the auxiliary power supply 33 and the capacitor 34 is located on the side of the first waterway facing the side wall 13, and the other is located on the side of the third waterway facing the side wall 13. No specific restrictions are imposed.

[0099] By setting up capacitor 34, and with auxiliary power supply 33 and capacitor 34 respectively set on opposite sides of heat dissipation module 20, heat is prevented from accumulating on one side. Heat dissipation module 20 can dissipate heat from multiple dispersed heat-generating devices, resulting in high heat dissipation efficiency.

[0100] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0101] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A charger (100), characterized in that, include: The shell (10) has a receiving cavity (11); A heat dissipation module (20) is housed in the receiving cavity (11). The heat dissipation module (20) includes a heat dissipation component (21) and an insert (22). The heat dissipation component (21) has a water channel (211), and at least a portion of the insert (22) extends into the water channel (211). The power module (30) includes a power device (31) housed in the housing cavity (11) and is thermally conductively connected to the heat dissipation module (20) via a heat-conducting element (36).

2. The charger (100) according to claim 1, characterized in that, The power module (30) also includes a power board (32), and the power device (31) is attached to the surface of the power board (32) facing the heat dissipation module (20).

3. The charger (100) according to claim 1, characterized in that, The insert (22) includes a sealing part (221) and a protrusion (222). The sealing part (221) is connected to the periphery of the protrusion (222). The sealing part (221) is connected to the heat sink (21) and seals the opening of the water channel (211). The protrusion (222) extends into the water channel (211). The insert (22) and the heat sink (21) together form a three-dimensional water channel.

4. The charger (100) according to claim 3, characterized in that, The heat dissipation module (20) includes a top surface (212) that opens toward the receiving cavity (11), and the protrusion (222) has a heat dissipation groove (223) at one end away from the top surface (212), and the opening of the heat dissipation groove (223) faces the same direction as the opening of the water channel (211).

5. The charger (100) according to claim 1, characterized in that, The heat dissipation module (20) also includes a water channel cover plate (23), which closes the opening of the water channel groove (211). The water channel cover plate (23) and the heat dissipation component (21) together form a three-dimensional water channel.

6. The charger (100) according to claim 5, characterized in that, The insert (22) includes a protrusion (222) and a connecting part (224). The protrusion (222) is connected to the waterway cover plate (23) and has a gap with the inner wall of the waterway groove (211). The connecting part (224) is connected to and protrudes from the outer peripheral surface of the protrusion (222) and abuts against the inner wall of the waterway groove (211).

7. The charger (100) according to claim 1, characterized in that, The housing (10) includes a bottom shell and a cover plate (14). The bottom shell surrounds the receiving cavity (11), and the cover plate (14) is connected to one end of the bottom shell and closes the opening of the receiving cavity (11). One of the cover plate (14) and the bottom shell is provided with a fixing hole (15), and the other is provided with a fixing part (16). The fixing part (16) is connected to the fixing hole (15) to connect the cover plate (14) and the bottom shell.

8. The charger (100) according to claim 2, characterized in that, The power module (30) also includes an auxiliary power supply (33), which is connected to the power board (32) and housed in the housing cavity (11). The auxiliary power supply (33) is thermally conductively connected to the heat dissipation module (20).

9. The charger (100) according to claim 1, characterized in that, The power module (30) also includes a main magnetic component (35), and the heat dissipation module (20) has a receiving groove (24) at one end facing away from the opening of the water channel (211). The water channel (211) surrounds the side wall of the receiving groove (24), and the main magnetic component (35) is housed in the receiving groove (24).

10. A vehicle, characterized in that, The device includes a vehicle body, electrical components, and a charger (100) as described in any one of claims 1 to 9. The charger (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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