Vehicle-mounted charger and new energy vehicle

Abstract

The embodiment of the invention discloses a vehicle-mounted charger and a new energy vehicle, the vehicle-mounted charger comprises a shell and a cooling flow channel which is of a rotary structure and is arranged in the middle position in the height direction of the shell, and the cooling flow channel is arranged in the position, close to the middle position, in the height direction of the shell; the shell is divided into two areas with a first containing space and a second containing space by the cooling flow channel in the middle, and the cooling flow channel comprises a first flow channel arranged close to the first containing space and a third flow channel arranged close to the second containing space. According to the vehicle-mounted charger, the first containing space and the second containing space in the shell are both provided with the flow channels for providing the heat dissipation function for the electronic elements, so that all key electronic elements can be fully cooled, the power density of the whole vehicle-mounted charger is improved, further, the cooling flow channels are designed into a double-layer three-dimensional backflow mode, and the cooling efficiency is improved. The inner space of the shell is basically covered, more heat can be taken away, and the heat exchange efficiency is higher.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle-mounted devices, and in particular to a vehicle-mounted charger and a new energy vehicle. Background Art

[0002] At present, the market share of new energy vehicles is increasing day by day, and the development of new energy vehicle industry has become one of the important strategies of countries around the world. The on-board charger provides charging and discharging functions for the vehicle and is an indispensable component.

[0003] At present, for new energy vehicles, battery life and charging speed are two indicators that consumers are very concerned about. Reducing the weight of vehicle parts can improve battery life. For on-board chargers, since there are many internal electronic components and their shapes are irregular, in order to accommodate these electronic components while ensuring electrical safety distance, the shell usually becomes larger, which in turn increases the weight of the whole machine. At the same time, the power level of the on-board charger determines the charging speed. The higher the power, the faster the charging speed. However, the higher the power, the greater the heat generated by the electronic components. This requires the shell to have excellent heat dissipation performance. The greater the heat dissipation demand, the higher the design requirements for the cooling system of the on-board charger. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a vehicle charger and a new energy vehicle, which can improve the space utilization rate of the vehicle charger housing, while allowing all key electronic components to obtain sufficient heat dissipation, effectively controlling the volume and weight of the housing, and improving the power density of the vehicle charger as a whole.

[0005] In a first aspect, the present application provides a vehicle charger, comprising:

[0006] The housing has a first accommodation space and a second accommodation space formed therein and arranged in sequence along the height direction thereof;

[0007] The cooling channel has a rotating structure and is arranged in the middle position of the shell along its height direction. The cooling channel at least includes a first channel, a second channel and a third channel that are connected in sequence. The first channel and the third channel extend along the length direction of the shell, and the second channel extends along the height direction of the shell. The first channel is arranged close to the first accommodating space, and the third channel is arranged close to the second accommodating space.

[0008] Through the embodiments of the present application, by arranging the cooling channel at a position close to the middle in the height direction of the shell, the shell is divided by the water channel in the middle into two areas with a first accommodating space and a second accommodating space respectively, and the cooling channel includes a first channel arranged close to the first accommodating space and a third channel arranged close to the second accommodating space, so that the first accommodating space and the second accommodating space in the shell both have channels to provide heat dissipation function for the electronic components, so that all key electronic components can be fully cooled, thereby improving the power density of the on-board charger. Furthermore, the cooling channel is designed in the form of a double-layer three-dimensional reflux, which basically covers the internal space of the shell, can take away more heat, and the heat exchange efficiency is higher.

[0009] In one embodiment of the above-mentioned on-board charger, the cooling channel further includes:

[0010] The fourth flow channel is arranged between the first flow channel and the second flow channel to connect the first flow channel with the second flow channel. The fourth flow channel extends along the width direction of the shell and is arranged close to the first accommodating space.

[0011] Through the embodiment of the present application, by setting a fourth flow channel between the first flow channel and the second flow channel, on the one hand, the connection between the first flow channel and the second flow channel is achieved, and on the other hand, the flow path of the cooling flow channel can be increased without increasing the size of the shell, thereby further improving the heat dissipation effect.

[0012] In one embodiment of the above-mentioned on-board charger, the number of the first flow channel, the second flow channel and the third flow channel is the same and each includes at least two, and each of the second flow channels is connected to one of the first flow channels and one of the third flow channels.

[0013] Through the embodiments of the present application, the path of the cooling channel can be increased without increasing the size of the shell, thereby further improving the heat dissipation effect.

[0014] In one embodiment of the above-mentioned on-board charger, at least two of the first flow channels are arranged at intervals in the shell along the width direction of the shell, at least two of the second flow channels are arranged at intervals in the shell along the width direction of the shell, and at least two of the third flow channels are arranged adjacent to each other in the shell along the width direction of the shell.

[0015] Through the embodiments of the present application, the flow area of ​​the cooling channel can be increased without increasing the size of the shell, thereby further improving the heat dissipation effect.

[0016] In one embodiment of the above-mentioned on-board charger, the number of the fourth flow channels is the same as that of the first flow channels and the second flow channels and includes at least two, and each of the fourth flow channels is connected to one of the first flow channels and one of the second flow channels.

[0017] Through the embodiments of the present application, the flow path and flow area of ​​the cooling channel can be increased without increasing the size of the shell, thereby further improving the heat dissipation effect.

[0018] In one embodiment of the above-mentioned on-vehicle charger, at least two of the fourth flow channels are arranged in the shell along the width direction of the shell at intervals.

[0019] In one embodiment of the above-mentioned on-board charger, the on-board charger further includes a liquid inlet and a liquid outlet opened on the shell, and the liquid inlet and the liquid outlet are both in communication with the cooling channel.

[0020] In the embodiment of the present application, a liquid inlet and a liquid outlet connected to the cooling channel are provided on the shell, so that external coolant can enter or flow out of the cooling channel.

[0021] In one embodiment of the above-mentioned on-board charger, the liquid inlet and the liquid outlet are arranged on the same end surface of the shell.

[0022] In the embodiment of the present application, by arranging the liquid inlet and the liquid outlet on the same end surface of the shell, it is convenient for liquid to enter and exit the cooling channel with a rotary structure inside the shell.

[0023] In one embodiment of the above-mentioned on-board charger, the shell includes a main body and a cover plate, a recess is formed on the main body, and the cover plate closes the recess to form the cooling channel.

[0024] Through the embodiments of the present application, a shell is provided including a main body and a cover plate, and a cooling channel is provided to be formed by a recess on the main body closed by the cover plate, thereby reducing the difficulty of processing.

[0025] In one embodiment of the above-mentioned on-board charger, a plurality of mounting grooves disposed around the cooling channel are formed on the main body, and the mounting grooves are configured to accommodate electronic components.

[0026] Through the embodiments of the present application, the mounting grooves for deploying electronic components are deployed around the cooling channel, so that electronic components that need heat dissipation can be arranged around the cooling channel, and the electronic components around the cooling channel can be cooled at the same time, and the heat dissipation surface of the cooling channel is fully utilized, which effectively shortens the length of the cooling channel and reduces the volume and weight of the shell.

[0027] In one embodiment of the above-mentioned on-board charger, the main body and / or the cover plate are made of die-cast aluminum material.

[0028] In one embodiment of the above-mentioned on-board charger, the main body and the cover plate are connected together by friction welding.

[0029] In a second aspect, the present application provides a new energy vehicle, comprising an on-board charger as described in any one of the first aspects.

[0030] One or more of the above embodiments of the present application have at least one or more of the following beneficial effects:

[0031] In the embodiment of the present application, the cooling channel is arranged at a position close to the middle of the shell in the height direction, so that the shell is divided into two areas having a first accommodating space and a second accommodating space by the water channel in the middle, and the cooling channel includes a first channel arranged close to the first accommodating space and a third channel arranged close to the second accommodating space, so that the first accommodating space and the second accommodating space in the shell both have channels to provide heat dissipation function for electronic components, so that all key electronic components can be fully cooled, thereby improving the power density of the vehicle charger as a whole;

[0032] Furthermore, the cooling channel is designed in the form of a double-layer three-dimensional reflux, which basically covers the internal space of the shell, can take away more heat, and the heat exchange efficiency is higher.

[0033] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The disclosure of the present application will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which:

[0035] Figure 1 is a structural schematic diagram of a vehicle charger provided in an embodiment of the present application;

[0036] Figure 2 is an exploded view of another viewing direction of the vehicle charger provided in an embodiment of the present application;

[0037] Figure 3 is a cross-sectional view of a vehicle charger provided in an embodiment of the present application;

[0038] Figure 4 is a cross-sectional view of another viewing direction of the vehicle charger provided in an embodiment of the present application;

[0039] Figure 5 is a schematic diagram of a three-dimensional structure of a vehicle charger provided in an embodiment of the present application from one viewing direction;

[0040] Figure 6 It is a schematic diagram of the three-dimensional structure of the vehicle charger provided in an embodiment of the present application from another viewing direction.

[0041] Description of Reference Numerals

[0042] 100, housing; 110, first accommodation space; 120, second accommodation space; 130, main body; 131, first recess; 132, second recess; 133, third recess; 134, first step surface; 135, second step surface; 136, third step surface; 137, fourth step surface; 138, fifth step surface; 140, cover plate; 141, first cover plate; 142, second cover plate; 143, third cover plate; 150, mounting groove; 151, first mounting groove; 152, second cover plate; 153, third cover plate; 154, mounting groove; 155, first mounting groove; 156, second mounting groove; 157, third mounting groove; 158, fifth mounting groove; 159, first mounting groove; 160, second mounting groove; 161, third mounting groove; 162, second mounting groove; 163, third mounting groove; 164, first mounting groove; 165, first mounting groove; 166, first mounting groove; 167, first mounting groove; 168, first mounting groove; 169, first mounting groove; 170, first mounting groove; 171, first mounting groove; 172, second mounting groove; 173, third mounting groove; 174, first mounting groove; 175, first mounting groove; 176, first mounting groove; 177, first mounting groove; 178, first mounting groove; 179, first mounting groove; 180, first mounting groove; 181, first mounting groove; 182, second mounting groove; 183, third mounting groove; 184, first mounting groove; 185, first mounting groove; 186, first mounting groove; 187, first mounting groove; 188, first mounting groove; 189, first mounting groove; 190, first mounting groove; 191, first mounting 2. Second mounting groove; 153. Third mounting groove; 200. Cooling channel; 210. First channel; 211. First horizontal channel; 212. Second horizontal channel; 220. Second channel; 221. First vertical channel; 222. Second vertical channel; 230. Third channel; 231. Third horizontal channel; 232. Fourth horizontal channel; 240. Fourth channel; 241. Fifth horizontal channel; 242. Sixth horizontal channel; 300. Liquid inlet; 400. Liquid outlet. DETAILED DESCRIPTION

[0043] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0044] As described in the background technology, the existing on-board chargers have many internal electronic components and irregular shapes. In order to accommodate these electronic components and ensure the electrical safety distance, the shell is usually larger, which increases the weight of the whole device. At the same time, the power level of the on-board charger determines the charging speed. The higher the power, the faster the charging speed. However, the higher the power, the greater the heat generated by the electronic components. This requires the shell to have excellent heat dissipation performance. The greater the heat dissipation demand, the higher the design requirements for the cooling system of the on-board charger.

[0045] Based on this, the embodiment of the present application creatively proposes a new on-board charger, by arranging the cooling channel 200 at a position close to the middle in the height direction of the shell 100, so that the shell 100 is divided by the water channel in the middle into two areas having a first accommodating space 110 and a second accommodating space 120 respectively, and the cooling channel 200 includes a first channel 210 arranged near the first accommodating space 110 and a third channel 230 arranged near the second accommodating space 120, so that the first accommodating space 110 and the second accommodating space 120 in the shell 100 both have channels to provide heat dissipation function for electronic components, so that all key electronic components can be fully cooled, thereby improving the power density of the on-board charger as a whole. Furthermore, the cooling channel 200 is designed in the form of a double-layer three-dimensional reflux, which basically covers the internal space of the shell 100, can take away more heat, and the heat exchange efficiency is higher.

[0046] The present application will be described in detail below through specific embodiments.

[0047] Reference Figures 1 to 6 As shown, the on-board charger generally includes a housing 100, a cooling channel 200, a liquid inlet 300 and a liquid outlet 400. The cooling channel 200 is arranged in the middle of the housing 100 along its height direction, and the interior of the housing 100 is divided into a first accommodating space 110 and a second accommodating space 120. The liquid inlet 300 and the liquid outlet 400 are provided on the housing 100 and are both connected to the cooling channel 200, so that the coolant enters the cooling channel 200 through the liquid inlet 300 or flows out of the cooling channel 200 through the liquid outlet 400.

[0048] Further references Figures 1 to 4 As shown, in some specific embodiments, the liquid inlet 300 and the liquid outlet 400 are arranged on the same end surface of the housing 100 to facilitate the inlet and outlet of liquid into the cooling channel 200 with a rotary structure inside the housing 100 .

[0049] Further references Figures 1 to 4As shown, the cooling channel 200 is a rotating structure. As a preferred embodiment, in the embodiment of the present application, the cooling channel 200 includes a first channel 210, a second channel 220, a third channel 230 and a fourth channel 240. The first channel 210, the fourth channel 240, the second channel 220 and the third channel 230 are connected in sequence to form a rotating structure. Among them, the first channel 210 and the fourth channel 240 are arranged near the first accommodating space 110, the third channel 230 is arranged near the second accommodating space 120, the first channel 210 and the third channel 230 extend along the length direction of the shell 100, the second channel 220 extends along the height direction of the shell 100, and the fourth channel 240 extends along the width direction of the shell 100. The second channel 220 connects the first channel 210 arranged near the first accommodating space 110 and the third channel 230 arranged near the second accommodating space 120, and the fourth channel 240 connects the first channel 210 and the second channel 220.

[0050] It should be noted that, in the embodiment of the present application, the width direction of the housing 100 is Figure 1 The X direction of the housing 100 is Figure 1 The Y direction of the housing 100 is Figure 1 The Z direction in .

[0051] Further references Figures 1 to 4 As shown, in some specific embodiments, the first flow channel 210 and the third flow channel 230 are arranged parallel to each other in the shell 100, the first flow channel 210, the second flow channel 220 and the fourth flow channel 240 are arranged perpendicularly to each other, and the third flow channel 230, the second flow channel 220 and the fourth flow channel 240 are arranged perpendicularly to each other.

[0052] In other specific embodiments, the first flow channel 210 and the third flow channel 230 are arranged parallel to each other in the housing 100, the first flow channel 210 and the second flow channel 220 are arranged at a first preset angle, the first flow channel 210 and the fourth flow channel 240 and / or the second flow channel 220 and the fourth flow channel 240 are arranged at a second preset angle, the third flow channel 230 and the second flow channel 220 are arranged at a third preset angle, and the third flow channel 230 and the fourth flow channel 240 and / or the second flow channel 220 and the fourth flow channel 240 are arranged at a fourth preset angle. It should be noted that in the embodiments of the present application, the specific values ​​of the first preset angle, the second preset angle, the third preset angle and the fourth preset angle are not limited, and can be set according to actual product requirements during specific implementation.

[0053] In some specific embodiments, the number of the first flow channel 210, the second flow channel 220, the third flow channel 230 and the fourth flow channel 240 includes at least two, so as to increase the flow path of the cooling flow channel 200 as much as possible without increasing the size of the housing 100, thereby further improving the heat dissipation effect of the cooling flow channel 200. Each second flow channel 220 is connected to one of the first flow channels 210 and one of the third flow channels 230, and each fourth flow channel 240 is connected to one of the first flow channels 210 and one of the second flow channels 220. It can be understood that in the implementation of the present application, the number of the first flow channel 210, the second flow channel 220, the third flow channel 230 and the fourth flow channel 240 can be the same or different. Preferably, the number of the first flow channel 210, the second flow channel 220, the third flow channel 230 and the fourth flow channel 240 is the same. It should be noted that in the embodiment of the present application, there is no specific limitation on the number of the first flow channel 210, the second flow channel 220, the third flow channel 230 and the fourth flow channel 240, and they can be set according to actual product requirements without violating the inventive concept of the present application.

[0054] In some specific embodiments, at least two first flow channels 210 are arranged in the housing 100 at intervals along the width direction of the housing 100 ;

[0055] In some other specific embodiments, at least two second flow channels 220 are arranged in the housing 100 at intervals along the width direction of the housing 100 ;

[0056] In some other specific embodiments, at least the third flow channels 230 are adjacently arranged in the housing 100 along the width direction of the housing 100;

[0057] In some other specific embodiments, at least two fourth flow channels 240 are arranged in the housing 100 at intervals along the width direction of the housing 100 .

[0058] It can be understood that, through the above-mentioned configuration, the flow path and flow area of ​​the cooling channel 200 can be increased without increasing the size of the housing 100, thereby further improving the heat dissipation effect.

[0059] Further references Figures 1 to 4 As shown, in some specific embodiments, the housing 100 of the on-board charger can be prepared by a die-casting process. It is understandable that due to the limitations of the die-casting process, when the housing 100 is cast in blank, the first flow channel 210, the third flow channel 230 and the fourth flow channel 240 are in an open state. In order to achieve the sealing of the water channel, the housing 100 in the implementation of the present application includes a main body 130 and a cover plate 140, wherein a plurality of depressions are formed on the main body 130, and the cover plate 140 closes the depressions to form a cooling flow channel 200.

[0060] The following describes the present application scheme by taking the example that the number of the first flow channel 210, the second flow channel 220, the third flow channel 230 and the fourth flow channel 240 are all two. Figures 1 to 4 As shown, the first flow channel 210 includes a first horizontal flow channel 211 and a second horizontal flow channel 212, the second flow channel 220 includes a first vertical flow channel 221 and a second vertical flow channel 222, the third flow channel 230 includes a third horizontal flow channel 231 and a fourth horizontal flow channel 232, and the fourth flow channel 240 includes a fifth horizontal flow channel 241 and a sixth horizontal flow channel 242. The first vertical flow channel 221, the second vertical flow channel 222, the fifth horizontal flow channel 241 and the sixth horizontal flow channel 242 are all arranged at one end of the first horizontal flow channel 211, the second horizontal flow channel 212, the third horizontal flow channel 231 and the fourth horizontal flow channel 232 away from the liquid inlet 300 and the liquid outlet 400.

[0061] Further references Figures 1 to 4 As shown, one end of the first horizontal flow channel 211 is connected to the liquid inlet 300, and one end of the second horizontal flow channel 212 is connected to the liquid outlet 400. One end of the first horizontal flow channel 211 away from the liquid inlet 300 is connected to one end of the fifth horizontal flow channel 241, the other end of the fifth horizontal flow channel 241 is connected to one end of the first vertical flow channel 221, the other end of the first vertical flow channel 221 is connected to one end of the third horizontal flow channel 231, the other end of the third horizontal flow channel 231 is connected to one end of the fourth horizontal flow channel 232, the other end of the fourth horizontal flow channel 232 is connected to one end of the second vertical flow channel 222, the other end of the second vertical flow channel 222 is connected to one end of the fourth horizontal flow channel 232, and the other end of the fourth horizontal flow channel 232 is connected to one end of the second horizontal flow channel 212 away from the liquid outlet 400.

[0062] When the cooling channel 200 is in working state, after the coolant enters the cooling channel 200 through the liquid inlet 300, it flows through the first horizontal channel 211 and the fifth horizontal channel 241 arranged near the first storage space 110, enters the first vertical channel 221, and enters the second storage space 120 located below the first storage space 110 through the first vertical channel 221, flows through the third horizontal channel 231 and the fourth horizontal channel 232 arranged near the second storage space 120, enters the second vertical channel 222, and then returns to the first storage space 110 again through the second vertical channel 222, flows through the fourth horizontal channel 232 and the second horizontal channel 212 arranged near the first storage space 110, and then flows out of the cooling channel 200 through the liquid outlet 400. From the perspective of the length direction of the shell 100, the coolant passes through a 180° detour, and the area through which it flows basically covers the horizontal cross section of the shell; from the perspective of the height direction of the shell, the coolant flows from the flow channel close to the first accommodating space 110 through the first vertical flow channel 221 with a vertical drop into the flow channel close to the second accommodating space 120, and then flows from the flow channel close to the second accommodating space 120 through the second vertical flow channel 222 with a vertical drop into the flow channel close to the first accommodating space 110, and the area through which it flows basically covers the vertical cross section of the shell 100. Through such a design, it is ensured that the contact area between the entire shell 100 and the coolant is large enough, the heat exchange efficiency is improved, and the temperature of the shell 100 itself and the internal ambient temperature are effectively reduced. In addition, the cooling channel 200 divides the shell 100 into a first accommodating space 110 and a second accommodating space 120. This double-layer three-dimensional reflux water channel design can isolate electronic components with high heat generation on both sides of the cooling channel 200. While avoiding the problem of temperature increase caused by mutual interference between components that are close to each other, the cooling channel 200 also increases the surface area provided by the cooling channel 200 for heat dissipation of the electronic components, effectively reducing the volume of the vehicle charger and the weight of the shell, and improving the power density.

[0063] Further references Figure 6 As shown, the plurality of recesses formed on the main body 130 include but are not limited to a first recess 131, a second recess 132 and a third recess 133 located in the second accommodation space 120, wherein the first recess 131 corresponds to the first horizontal flow channel 211, the second recess 132 corresponds to the second horizontal flow channel 212, and the third recess 133 corresponds to the third horizontal flow channel 231 and the fourth horizontal flow channel 232. Figure 6 As shown, the third recess 133 has a circuitous structure, which extends along the length direction of the shell 100 from one end close to the second flow channel 220 to one end close to the liquid inlet 300, forming a recess corresponding to the third horizontal flow channel 231, and then turns at one end close to the liquid inlet 300, extending from one end close to the liquid inlet 300 to one end close to the second flow channel 220, forming a recess corresponding to the fourth horizontal flow channel 232.

[0064] Further references Figure 6 As shown, the cover plate 140 at least includes a first cover plate 141, a second cover plate 142 and a third cover plate 143. The first cover plate 141 is used to close the first recess 131 located in the second accommodation space 120, the second cover plate 142 is used to close the second recess 132 located in the second accommodation space 120, and the third cover plate 143 is used to close the third recess 133 located in the second accommodation space 120. In some specific embodiments, the first cover plate 141, the second cover plate 142 and the third cover plate 143 are combined with the main body 130 through a stir friction welding process, so as to realize the sealing of the first horizontal flow channel 211, the second horizontal flow channel 212, the third horizontal flow channel 231 and the fourth horizontal flow channel 232 and the structural characteristics of the three-dimensional winding of the water channel.

[0065] In some specific embodiments, after the vehicle charger is assembled, the input inductor in the vehicle charger is located at a position corresponding to the first horizontal flow channel 211 in the second accommodating space 120, and the input inductor is cooled by dispensing glue on the surface of the first cover plate 141; the output inductor in the vehicle charger is located at a position corresponding to the second horizontal flow channel 212 in the second accommodating space 120, and the output inductor is cooled by dispensing glue on the surface of the second cover plate 142.

[0066] Further references Figures 1 to 6As shown, the main body 130 is also provided with a mounting groove 150, and the mounting groove 150 is used to accommodate electronic components. In order to improve the heat dissipation effect of the relevant electronic components in the mounting groove 150, in the embodiment of the present application, the mounting groove 150 is arranged around the cooling channel 200. In a specific embodiment, the mounting groove 150 includes at least a first mounting groove 151 for assembling an electrolytic capacitor, a second mounting groove 152 for assembling a main transformer and a main inductor, and a third mounting groove 153 for assembling a DCDC transformer and a DCDC inductor. The first mounting groove 151, the second mounting groove 152, and the third mounting groove 153 are all located in the first accommodating space 110, and are all arranged between the first horizontal channel 211 and the second horizontal channel 212, so as to utilize the first horizontal channel 211 and the second horizontal channel 212 to dissipate heat for the electronic components accommodated therein. The first mounting groove 151, the second mounting groove 152, and the third mounting groove 153 are sequentially arranged in the first accommodating space 110 along the length direction of the housing 100, and the first mounting groove 151 is arranged at one end of the first accommodating space 110 close to the liquid inlet 300 and the liquid outlet 400. The second mounting groove 152 and the third mounting groove 153 are located at positions corresponding to the third horizontal flow channel 231 and the fourth horizontal flow channel 232. In some specific embodiments, the bottom plate at the bottom of the second mounting groove 152 and the third mounting groove 153 and the bottom plate at the bottom of the third horizontal flow channel 231 and the fourth horizontal flow channel 232 share the same bottom plate, so that the third horizontal flow channel 231 and the fourth horizontal flow channel 232 are used to further dissipate heat for the electronic components accommodated in the second mounting groove 152 and the third mounting groove 153.

[0067] In some specific embodiments, the first installation groove 151, the second installation groove 152 and the third installation groove 153 are configured according to the special shapes of the electronic components to be accommodated therein, so that the reliability of the installation of the electronic components is ensured while the heat dissipation of each device is sufficient. At the same time, the side walls of these installation grooves can be regarded as the guide ribs and reinforcing ribs inside the housing 100, which not only improve the flow rate of the aluminum liquid during die casting, but also enhance the strength of the casting itself, so that the blank of the housing 100 will not be deformed when the friction stir welding is performed on the waterway cover.

[0068] Further references Figures 1 to 6As shown, the main body 130 also includes a first step surface 134, a second step surface 135, a third step surface 136, a fourth step surface 137, and a fifth step surface 138. Among them, the first step surface 134 and the second step surface 135 are located on the side of the second horizontal flow channel 212 facing the first accommodation space 110, and are arranged in sequence along the length direction of the shell 100. The third step surface 136 and the fourth step surface 137 are located on the side of the first horizontal flow channel 211 facing the first accommodation space 110, and are arranged in sequence along the length direction of the shell 100. The fifth step surface 138 is located on the side of the fifth horizontal flow channel 241 and the sixth horizontal flow channel 242 facing the first accommodation space 110. When the on-board charger is assembled, the first step surface 134, the second step surface 135, the third step surface 136, and the fourth step surface 137 are in contact with the main IGBT for heat dissipation of the main IGBT; the fifth step surface 138 is in contact with the power IGBT for heat dissipation of the power IGBT.

[0069] To summarize, the upper side of the first horizontal flow channel 211 and the second horizontal flow channel 212 (located on one side of the first accommodating space 110) is the first step surface 134, the second step surface 135, the third step surface 136 and the fourth step surface 137 for dissipating heat for the main IGBT, and the lower side of the first horizontal flow channel 211 and the second horizontal flow channel 212 (located on one side of the second accommodating space 120) is the first cover plate 141 and the second cover plate 142 for dissipating heat for the input inductor and the output inductor, respectively. Through this structural layout in which electronic components are distributed on the upper and lower sides of the water channel, the contact area between the water channel and the device is most fully utilized. While ensuring the heat dissipation requirements of the device, the volume of the water channel and the shell is reduced, and the weight of the shell is reduced.

[0070] Corresponding to the above-mentioned on-board charger, an embodiment of the present application further provides a new energy vehicle, which includes a on-board charger as described in any of the above items, wherein the relevant contents of the on-board charger can be referred to as shown in the above text and will not be repeated here one by one.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle charger, characterized in that: include: A housing (100) is formed with a first accommodation space (110) and a second accommodation space (120) arranged in sequence along its height direction; The cooling channel (200) is in a rotating structure and is arranged in the middle position of the shell (100) along the height direction thereof. The cooling channel (200) at least comprises a first channel (210), a second channel (220) and a third channel (230) which are connected in sequence. The first channel (210) and the third channel (230) extend along the length direction of the shell (100), and the second channel (220) extends along the height direction of the shell (100). The first channel (210) is arranged close to the first accommodating space (110), and the third channel (230) is arranged close to the second accommodating space (120).

2. The vehicle charger according to claim 1, characterized in that: The cooling channel (200) further comprises: A fourth flow channel (240) is arranged between the first flow channel (210) and the second flow channel (220) to connect the first flow channel (210) with the second flow channel (220); the fourth flow channel (240) extends along the width direction of the shell (100) and is arranged close to the first accommodating space (110).

3. The vehicle charger according to claim 2, characterized in that: At least two of the first flow channels (210) are arranged in the shell (100) at intervals along the width direction of the shell (100), at least two of the second flow channels (220) are arranged in the shell (100) at intervals along the width direction of the shell (100), and at least two of the third flow channels (230) are arranged in the shell (100) adjacent to each other along the width direction of the shell (100).

4. The vehicle charger according to claim 3, characterized in that: The number of the fourth flow channels (240) is the same as that of the first flow channels (210) and the second flow channels (220) and includes at least two, and each of the fourth flow channels (240) is connected to one of the first flow channels (210) and one of the second flow channels (220).

5. The vehicle charger according to claim 4, characterized in that: At least two of the fourth flow channels (240) are arranged in the shell (100) at intervals along the width direction of the shell (100).

6. The vehicle charger according to any one of claims 1 to 5, characterized in that: The on-board charger further comprises a liquid inlet (300) and a liquid outlet (400) which are provided on the housing (100); the liquid inlet (300) and the liquid outlet (400) are both in communication with the cooling channel (200).

7. The vehicle charger according to claim 6, characterized in that: The liquid inlet (300) and the liquid outlet (400) are arranged on the same end surface of the housing (100).

8. The vehicle charger according to any one of claims 1 to 5, characterized in that: The housing (100) comprises a main body (130) and a cover plate (140); a recess is formed on the main body (130); and the cover plate (140) closes the recess to form the cooling channel (200).

9. The vehicle charger according to claim 8, characterized in that: A plurality of mounting grooves (150) arranged around the cooling channel (200) are formed on the main body (130), and the mounting grooves (150) are configured to accommodate electronic components.

10. The vehicle charger according to claim 8, characterized in that: The main body (130) and / or the cover plate (140) are made of die-cast aluminum material.

11. The vehicle charger according to claim 10, characterized in that: The main body (130) and the cover plate (140) are connected together by using a friction welding process.

12. A new energy vehicle, characterized in that: The invention comprises a vehicle charger as claimed in any one of claims 1 to 11.

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