CN215991459U - Vehicle-mounted charger and vehicle - Google Patents

Abstract

The embodiment of the application provides a vehicle-mounted charger and vehicle, wherein, the vehicle-mounted charger includes casing and two at least circuit boards, the casing includes: the shell and with shell integrated into one piece's cooling unit, the shell encloses to close and forms the cavity, cooling unit is located in the cavity, just cooling unit will the cavity is separated into cavity and lower cavity, two at least circuit boards set up respectively go up the cavity with in the cavity down, at least one liquid cooling passageway has been seted up in the cooling unit, set up on the shell with inlet and the liquid outlet of at least one liquid cooling passageway intercommunication. The embodiment of the application provides a vehicle-mounted charger and vehicle can greatly improve effective heat dissipation area, effectively solve the problem that the heat dissipation capacity of the vehicle-mounted charger is insufficient in the related art, and in addition, the vehicle-mounted charger is simple in structure, small in size and convenient to process and assemble.

Description

Vehicle-mounted charger and vehicle

Technical Field

The embodiment of the application relates to the technical field of auto-parts, in particular to a vehicle-mounted charger and a vehicle.

Background

Climate change, energy and environmental issues have been long-standing problems facing the human society. The three problems of greenhouse gas emission, energy consumption and tail gas emission in the field of transportation can be solved effectively, and the development of the human society is directly influenced. As an important force of world energy consumption countries and environmental protection, the development of new energy automobiles becomes an important future development strategy of China, and under the pressure of energy and environmental protection, the new energy automobiles will undoubtedly become the development direction of future automobiles.

The new energy automobile has the advantages of energy conservation and emission reduction, and is highly valued by governments and enterprises of various countries. The new energy automobile can realize the running function by driving the motor through the power battery. The charger is divided into a vehicle-mounted charger and a non-vehicle-mounted charger according to whether the charger is mounted on the vehicle. The vehicle-mounted charger needs to meet various user requirements. For example, an on-board charger needs to charge a rechargeable battery and also can charge a storage battery on a vehicle to supply power to electronic devices and a vehicle-mounted system on the vehicle. The vehicle-mounted charger also needs to be capable of realizing multiple charging modes such as normal charging and quick charging for the power battery. In summary, the vehicle-mounted charger has the capability of safely and automatically charging the power battery of the automobile, and can dynamically adjust charging current or voltage parameters according to data provided by the battery management system, execute corresponding actions and complete the charging process.

However, the vehicle-mounted charger has more heating elements, large heating value, limited by the overall size of the product and insufficient heat dissipation capacity, and a vehicle-mounted charger with small volume and good heat dissipation effect is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a vehicle-mounted charger and a vehicle, wherein the vehicle-mounted charger is small in size and good in heat dissipation effect, and the problem that the heat dissipation capacity of the current vehicle-mounted charger is insufficient can be effectively solved.

An aspect of an embodiment of the present application provides a vehicle-mounted charger, including: the circuit board comprises a shell and at least two circuit boards;

the housing includes: the cooling component is positioned in the cavity, the cavity is divided into an upper cavity and a lower cavity by the cooling component, and the at least two circuit boards are respectively arranged in the upper cavity and the lower cavity;

at least one liquid cooling channel is arranged in the cooling part, and a liquid inlet and a liquid outlet which are communicated with the at least one liquid cooling channel are arranged on the shell.

The on-vehicle machine that charges that this application embodiment provided separates the cavity for last cavity and lower cavity through cooling unit, and the heat that the circuit board during operation produced in cavity and lower cavity can be taken away to the cooling material that circulates in cooling unit, realizes the upper surface and the lower surface double-sided heat dissipation of liquid cooling unit, promotes effective heat radiating area by a wide margin, effectively solves the not enough problem of on-vehicle machine heat-sinking capability among the correlation technique. And, cooling unit and shell integrated into one piece can avoid the sealed face of design and the sealed problem of leaking that leads to of design between cooling unit and shell, accords with the safety standard requirement, realizes water and electricity separation, prevents that precision components and parts such as circuit board from suffering damage by intaking, guarantees the normal operating of on-vehicle machine that charges. In addition, the electronic devices required in the vehicle-mounted charger are distributed on the at least two circuit boards, and the cooling part and the shell are integrally formed, so that the structure is simple, the number of fasteners is reduced, the vehicle-mounted charger is favorable for miniaturization of the size, and the market demand is met.

In a possible embodiment, a liquid cooling passage is disposed in the liquid cooling unit, the liquid inlet and the liquid outlet are respectively located at two ends of the liquid cooling passage, and the liquid inlet and the liquid outlet are respectively located at two opposite sides of the housing in the horizontal direction.

In a possible embodiment, at least two liquid cooling passages communicated with each other are arranged in the liquid cooling part, the liquid inlet is communicated with one of the at least two liquid cooling passages, the liquid outlet is communicated with the other of the at least two liquid cooling passages, and the liquid inlet and the liquid outlet are located on the same side of the shell in the horizontal direction.

In a possible embodiment, the liquid cooling channel is formed by a mold core pulling process, and the housing forms at least two openings in the mold core pulling process, one of the at least two openings is the liquid inlet, and the other of the at least two openings is the liquid outlet.

In one possible embodiment, the housing comprises: the side walls enclose to form the cavity with openings at two ends, and the upper cover plate and the lower cover plate are respectively connected with the openings at two ends of the side walls in a sealing manner;

the cooling member is integrally formed with the side wall.

In one possible embodiment, the method further comprises: the liquid cooling cover plate is connected with the side wall and used for sealing the opening;

the liquid cooling cover plate is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is used for being communicated with the liquid inlet, and the liquid outlet channel is used for being communicated with the liquid outlet.

In a possible embodiment, the upper cavity is communicated with the lower cavity, the number of the circuit boards is two, and the two circuit boards are electrically connected.

In a possible embodiment, the housing is provided with at least one input port and at least one output port, which are each electrically connected to the circuit board.

In one possible embodiment, the inner walls of the upper and lower cavities and the outer surface of the liquid cooling part are provided with heat conducting medium materials.

Another aspect of the embodiment of the present application provides a vehicle, including the vehicle-mounted charger as described above.

The vehicle that this application embodiment provided, wherein, on-vehicle machine that charges separates the cavity for last cavity and lower cavity through cooling unit, and the heat that the circuit board during operation produced in cavity and lower cavity can be taken away to the cooling material that circulates in cooling unit, realizes the upper surface and the two-sided heat dissipation of lower surface of liquid cooling unit, promotes effective heat radiating area by a wide margin, effectively solves the not enough problem of on-vehicle machine heat-sinking capability among the correlation technique. And, cooling unit and shell integrated into one piece can avoid the sealed face of design and the sealed problem of leaking that leads to of design between cooling unit and shell, accords with the safety standard requirement, realizes water and electricity separation, prevents that precision components and parts such as circuit board from suffering damage by intaking, guarantees the normal operating of on-vehicle machine that charges. In addition, the electronic devices required in the vehicle-mounted charger are distributed on the at least two circuit boards, and the cooling part and the shell are integrally formed, so that the structure is simple, the number of fasteners is reduced, the vehicle-mounted charger is favorable for miniaturization of the size, and the market demand is met. Meanwhile, the opening is located on the outer side face of the shell and is not communicated with the upper cavity and the lower cavity, the circuit board can be prevented from being damaged due to water entering the circuit board, and the liquid cooling cover plate is located on the outer side of the shell and is not in contact with the circuit board, so that interference with the circuit board is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a liquid cooling heat dissipation system of a vehicle-mounted charger in the related art;

fig. 2 is an exploded schematic structural diagram of a vehicle-mounted charger provided in an embodiment of the present application;

fig. 3 is a longitudinal sectional view of the vehicle-mounted charger according to the embodiment of the application;

fig. 4 is a transverse cross-sectional view of the vehicle-mounted charger according to the embodiment of the present application.

Description of reference numerals:

1-a machine shell;

2-a power device;

3-water channel;

4-sealing the cover plate;

100-vehicle charger;

10-a housing;

11-a housing;

111-a liquid inlet;

112-a liquid outlet;

113-an opening;

114-an upper cover plate;

115-lower cover plate;

116-a side wall;

12-a cooling member;

121-a liquid cooling channel;

20-a circuit board;

30-a cavity;

31-an upper cavity;

32-a lower cavity;

40-liquid cooling of the cover plate;

41-a liquid inlet channel;

42-a liquid outlet channel;

50-input port;

60-output port.

Detailed Description

The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The vehicle-mounted charger is fixedly arranged on the electric automobile, has the capability of safely and automatically charging the power battery of the electric automobile, can ensure that the temperature, the charging voltage and the current of the power battery do not exceed allowable values in the charging process, has the function of voltage limitation of a single battery, dynamically adjusts the charging current according to the battery information of a battery management system, and can dynamically adjust the charging current and voltage parameters according to the data provided by the battery management system, execute corresponding actions and complete the charging process.

The working efficiency of a vehicle-mounted charger is generally about 92%, in the charging process, a power device inside the charger generates heat continuously to generate energy loss, and the heat is accumulated continuously to easily cause the damage of the power device, so that an effective heat dissipation system is required to be arranged in the charger generally in order to ensure that the charger can work normally. In the related art, a heat dissipation system arranged in a charger mainly comprises: air-cooled cooling system and liquid-cooled cooling system.

The air-cooled heat dissipation system adopts an air-cooled mode, firstly, a power device inside the vehicle-mounted charger transfers heat to the surface of the vehicle-mounted charger through heat-conducting silica gel, and then a fan is used for blowing the heat to diffuse the heat on the surface of the vehicle-mounted charger into air.

Fig. 1 is a schematic structural view of a liquid cooling heat dissipation system of a vehicle-mounted charger in the related art, and referring to fig. 1, a power device 2 is disposed in a cavity of a casing 1, a water channel 3 is disposed at the bottom of the casing 1, the water channel 3 is sealed by a sealing cover plate 4, heat generated by the power device 2 is transferred to the bottom of the casing 1, and then the heat is transferred to a coolant through the water channel 3 to cool the vehicle-mounted charger.

However, the liquid cooling heat dissipation system has the following problems: a. the vehicle-mounted charger radiates heat through a single surface of the water channel 3 positioned at the bottom of the shell 1, so that the heat radiation area is limited, the heat radiation efficiency is low, and the requirements of multi-component heat radiation and miniaturization of the vehicle-mounted charger are difficult to meet. b. The power device 2 needs to be assembled in a double-layer or multi-layer overlapping mode, and is complex to assemble, for example, in fig. 1, the upper power device 2 and the lower power device 2 need to be fixed by protruding screw columns from the bottom of the casing 1, so that space is wasted, miniaturization of a vehicle-mounted charger is not facilitated, and design difficulty of the bottom of the casing 1 can be increased. c. The power device 2 located on the upper side in the cavity of the casing 1 can only cool through natural heat dissipation, and the reliability and the service life of the power device 2 on the upper side can be influenced, so that the service life of the whole machine is influenced.

In order to solve the above problem, an embodiment of the present application provides a vehicle-mounted charger and a vehicle, wherein, in the vehicle-mounted charger, a cavity formed by enclosing a shell is divided into an upper cavity and a lower cavity by a cooling part, at least two circuit boards are respectively arranged in the upper cavity and the lower cavity, and double-sided heat dissipation of the upper cavity and the lower cavity by the cooling part is realized by introducing cooling liquid into a liquid cooling channel in the cooling part, so that an effective heat dissipation area can be greatly increased, and thus the heat dissipation capacity of the vehicle-mounted charger is improved. And, cooling part and shell integrated into one piece avoid need between cooling part and shell design sealed face to and design the problem of leaking that sealed face leads to. In addition, the electronic devices required by the vehicle-mounted charger are distributed on the at least two circuit boards, so that the size miniaturization of the vehicle-mounted charger can be facilitated.

Example one

The following describes the vehicle-mounted charger 100 according to an embodiment of the present application with reference to the drawings.

Fig. 2 is an exploded schematic structural diagram of the vehicle-mounted charger 100 provided in the embodiment of the present application, and fig. 3 is a longitudinal sectional view of the vehicle-mounted charger 100 provided in the embodiment of the present application, which is shown in fig. 2 and fig. 3, where the vehicle-mounted charger 100 provided in the embodiment of the present application includes: the charging device comprises a shell 10 and at least two circuit boards 20, wherein functional modules are integrated on the circuit boards 20 to realize the charging function of the vehicle-mounted charger 100. In the embodiment of the present application, the circuit boards 20 are illustrated by taking two as an example, and it can be understood that the number of the circuit boards 20 can be set according to the number of the functional modules that need to be integrated and the overall structural layout of the vehicle-mounted charger 100, which is not limited herein.

With continued reference to fig. 3, the housing 10 includes: the cooling device comprises a shell 11 and a cooling part 12 integrally formed with the shell 11, the shell 11 encloses to form a cavity 30, the cooling part 12 is located in the cavity 30, the cavity 30 is divided into an upper cavity 31 and a lower cavity 32 by the cooling part 12, at least two circuit boards 20 are respectively arranged in the upper cavity 31 and the lower cavity 32, for example, in the embodiment drawings provided by the application, two circuit boards 20 are provided, one circuit board 20 is located in the upper cavity 31, the other circuit board 20 is located in the lower cavity 32, and the circuit boards 20 can be fixed on the shell 11 through fasteners such as screws or the like and can also be fixed on the cooling part 12, so that the assembly space can be saved, and the miniaturization of the vehicle-mounted charger 100 is facilitated.

If the number of the circuit boards 20 is more than two, the number of the circuit boards 20 arranged in the upper cavity 31 and the lower cavity 32 can be set according to actual requirements, and only the circuit boards 20 are required to be arranged in the upper cavity 31 and the lower cavity 32.

Here, the term "integrally molded" means: the multiple parts are machined as an integral, indivisible unit. It should be noted that the cavity 30 formed by enclosing the housing 11 may be a square cavity, a rectangular parallelepiped cavity, a cylindrical cavity, etc., and the shape of the enclosure of the housing 11 is not limited herein, and the rectangular parallelepiped cavity is formed by enclosing the housing 11 in this embodiment.

Fig. 4 is a transverse cross-sectional view of the vehicle-mounted charger 100 according to the embodiment of the present application, and as shown in fig. 3 and fig. 4, at least one liquid cooling channel 121 is opened in the cooling part 12, and a liquid inlet 111 and a liquid outlet 112 which are communicated with the liquid cooling channel 121 are opened on the housing 11, and cooling substances (for example, water, cooling liquid, cold air, and the like) are introduced from the liquid inlet 111, flow through the liquid cooling channel 121, and flow out from the liquid outlet 112.

It can be understood that the heat generated by the circuit board 20 in the upper cavity 31 and the lower cavity 32 during operation can be taken away by the cooling material circulating in the cooling part 12, so that the double-sided heat dissipation of the upper surface and the lower surface of the liquid cooling part is realized, the effective heat dissipation area is greatly increased, and the problem of insufficient heat dissipation capability of the vehicle-mounted charger 100 in the related art is effectively solved. In addition, the cooling component 12 and the housing 11 are integrally formed, so that the problem of water leakage caused by the design of a sealing surface and the design of the sealing surface between the cooling component 12 and the housing 11 can be avoided, the safety standard requirement is met, water and electricity separation is realized, the damage to precision components such as the circuit board 20 and the like caused by water inflow is prevented, and the normal operation of the vehicle-mounted charger 100 is ensured. In addition, the electronic devices required by the vehicle-mounted charger 100 are distributed on the at least two circuit boards 20, and the cooling part 12 and the shell 11 are integrally formed, so that the structure is simple, the number of fastening pieces is reduced, the vehicle-mounted charger is beneficial to miniaturization of the vehicle-mounted charger, and the market demand is met.

In one possible embodiment, a liquid cooling passage 121 may be formed in the liquid cooling part, and in order to improve the heat dissipation efficiency of the liquid cooling passage 121, the liquid cooling passage 121 is generally formed from one side of the housing 11 to the other side of the housing 11, and the liquid inlet 111 and the liquid outlet 112 are respectively located at two ends of the liquid cooling passage 121, for example, as shown in fig. 3, the liquid cooling passage 121 traverses the entire liquid cooling part and is formed from the left side of the housing 11 to the right side of the housing 11. At this time, the liquid inlet 111 and the liquid outlet 112 are respectively located at two opposite sides of the housing 11 in the horizontal direction.

It should be understood that in the drawings provided in the embodiments of the present application, the liquid cooling passage 121 is a straight passage, but may be a passage of any shape, such as an arc-shaped passage. The liquid inlet 111 and the liquid outlet 112 are not limited to two opposite sides of the housing 11, and may also be located on the same side or two adjacent sides of the housing 11, for example, in the rectangular parallelepiped housing 11 provided in the present application, the liquid inlet 111 and the liquid outlet 112 may be disposed on the same side wall of the rectangular parallelepiped housing 11, or the liquid inlet 111 and the liquid outlet 112 may be disposed on adjacent side walls of the rectangular parallelepiped housing 11, which is not limited herein.

In general, the liquid inlet 111 and the liquid outlet 112 need to be sealed by a sealing cover plate, and in order to further reduce the volume of the vehicle-mounted charger 100, the liquid inlet 111 and the liquid outlet 112 may be disposed on the same side of the housing 11, for example, as shown in fig. 4, at least two liquid cooling channels 121 that are mutually communicated are disposed in a liquid cooling part, and fig. 4 illustrates two liquid cooling channels 121 as an example, where the liquid inlet 111 is communicated with one of the liquid cooling channels 121, the liquid outlet 112 is connected with the other liquid cooling channel 121, and the liquid inlet 111 and the liquid outlet 112 are located on the same side of the housing 11 in the horizontal direction.

It can be understood that the plurality of liquid cooling channels 121 which are communicated with each other can improve the flowing path of the cooling substance in the liquid cooling channels 121, thereby further enhancing the heat dissipation efficiency of the vehicle-mounted charger 100 and the utilization efficiency of the cooling substance.

For convenience of processing and manufacturing the vehicle-mounted charger 100, the liquid cooling channel 121 may be formed by a mold core pulling process, for example, before the housing 10 is formed, a plug (not shown in the figure) is added into the mold, after the housing 10 is formed, the plug is pulled out to form the liquid cooling channel 121, and at least two openings 113 are also formed on the housing 11 when the plug is pulled out.

For example, as shown in fig. 4, in order to facilitate the extraction of the skewers after the housing 10 is formed, the skewers may be inserted into two sides of the housing 10, and two of the cuttage pieces may be extracted to form a liquid cooling channel 121. In fig. 4, in order to insert two plugs, four plugs in total, on both sides of the housing 10, two liquid cooling channels 121 are formed after the plugs are pulled out, and four openings 113 are formed on the housing 11, one of the four openings 113 is selected as the liquid inlet 111, and the other is selected as the liquid outlet 112, for example, in fig. 4, two openings 113 on the right side of the housing 10 are selected as the liquid inlet 111 and the liquid outlet 112, but the present application includes, but is not limited to, the above examples.

It should be mentioned that, in order to further facilitate the extraction of the cutting element, the cutting element may be made in a wedge shape, that is, the cross-sectional area of the end close to the outer portion of the housing 11 is large, and the cross-sectional area of the end far away from the outer portion of the housing 11 is small, so as to facilitate the attachment of the stress point when the cutting element is extracted.

With continued reference to fig. 2, in order to facilitate assembly and maintenance replacement of the vehicle-mounted charger 100, in some embodiments of the present application, the housing 11 may include: an upper cover plate 114, a lower cover plate 115 and side walls 116, the side walls 116 enclosing a cavity 30 having an opening at both upper and lower ends. The cooling member 12 is integrally formed with the side wall 116 and is located within the cavity 30. The upper and lower cover plates 114 and 115 are used to be hermetically connected with the openings at the upper and lower ends of the sidewalls 116 after the circuit board 20 is mounted in the upper and lower cavities 31 and 32 for the purpose of protecting the circuit board 20.

Referring to fig. 2, in some embodiments of the present application, the vehicle-mounted charger 100 provided in the embodiments of the present application further includes: the liquid cooling cover plate 40, the liquid cooling cover plate 40 and the opening 113 (see fig. 4) on the side wall 116 are hermetically connected to ensure that the cooling material is prevented from leaking when the cooling material is introduced. Referring to fig. 4, the liquid-cooled cover plate 40 has an inlet channel 41 and an outlet channel 42, wherein the inlet channel 41 is communicated with the inlet 111, and the outlet channel 42 is communicated with the outlet 112. For example, as shown in fig. 2 or fig. 4, the liquid inlet channel 41 and the liquid outlet channel 42 are disposed on the same liquid-cooled cover plate 40, and the liquid inlet channel 41 and the liquid outlet channel 42 are respectively communicated with the liquid inlet 111 and the liquid outlet 112.

It can be understood that the number of the liquid cooling cover plates 40 needs to be set according to specific situations, two are taken as examples in the embodiment of the present application, and it is only necessary to ensure that enough liquid cooling cover plates 40 can seal the opening 113, and here, the number of the liquid cooling cover plates 40 is not limited. In addition, the liquid inlet channel 41 and the liquid outlet channel 42 are not limited to be disposed on the same liquid-cooled cover plate 40, for example, when the liquid inlet 111 and the liquid outlet 112 are disposed on two sides of the housing 11, the liquid inlet channel 41 and the liquid outlet channel 42 are disposed on different liquid-cooled cover plates 40.

It should be noted that, due to the existence of the liquid inlet channel 41 and the liquid outlet channel 42, the liquid inlet 111 and the liquid outlet 112 are disposed on the same side of the housing 11, and compared with the case where the liquid inlet 111 and the liquid outlet 112 are disposed on different sides of the housing 11, the overall size of the vehicle-mounted charger 100 can be reduced, and the vehicle-mounted charger 100 can be further miniaturized.

In order to simplify the structure of the vehicle-mounted charger 100 and miniaturize the vehicle-mounted charger 100, the upper cavity 31 and the lower cavity 32 may be set as communicated cavities, and two circuit boards 20 may be set, and the two circuit boards 20 are electrically connected through a connector.

In the case where the upper cavity 31 communicates with the lower cavity 32, at least one input port 50 and at least one output port 60 may be provided on the sidewall 116, wherein the input port 50 and the output port 60 are electrically connected to the circuit board 20, respectively. Illustratively, as shown in fig. 2, three input ports 50 and one output port 60 are provided on the sidewall 116, the three input ports 50 are electrically connected to the circuit board 20 located in the upper cavity 31, respectively, and the output port 60 is electrically connected to the circuit board 20 located in the lower cavity 32.

For example, in some embodiments of the present application, since the circuit board 20 in the upper cavity 31 and the circuit board 20 in the lower cavity 32 are electrically connected, the input port 50 and the output port 60 can also be electrically connected to the same circuit board 20 at the same time, only one path is required to be formed between the input port 50, the two circuit boards 20, and the output port 60, and the connection manner between the input port 50 and the output port 60 and the circuit board 20 is not limited.

It should be understood that, compared with the case that the upper cavity 31 and the lower cavity 32 are not connected, the vehicle-mounted charger 100 provided in the embodiment of the present application can reduce the configuration of a set of input ports 50 and output ports 60, so as to simplify the structure of the vehicle-mounted charger 100, and facilitate the miniaturization of the vehicle-mounted charger 100.

In order to further enhance the heat dissipation effect, in the vehicle-mounted charger 100 provided in the embodiment of the present application, heat conducting medium materials, such as heat conducting silicone grease, heat conducting silicone, soft silicone heat conducting pads, graphite gaskets, and the like, may be further disposed on the inner walls of the upper cavity 31 and the lower cavity 32 and on the outer surfaces of the liquid cooling component (for example, the upper surface and the lower surface of the liquid cooling component).

To sum up, according to the vehicle-mounted charger 100 provided in the embodiment of the present application, the heat generated by the circuit board 20 in the upper cavity 31 and the lower cavity 32 during operation can be taken away by the cooling material circulating in the cooling part 12, so as to realize the double-sided heat dissipation of the upper surface and the lower surface of the liquid cooling part, greatly increase the effective heat dissipation area, and effectively solve the problem of insufficient heat dissipation capability of the vehicle-mounted charger 100 in the related art. In addition, the cooling component 12 and the housing 11 are integrally formed, so that the problem of water leakage caused by the design of a sealing surface and the design of the sealing surface between the cooling component 12 and the housing 11 can be avoided, the safety standard requirement is met, water and electricity separation is realized, the damage to precision components such as the circuit board 20 and the like caused by water inflow is prevented, and the normal operation of the vehicle-mounted charger 100 is ensured. In addition, the electronic devices required by the vehicle-mounted charger 100 are distributed on the at least two circuit boards 20, and the cooling part 12 and the shell 11 are integrally formed, so that the structure is simple, the number of fastening pieces is reduced, the vehicle-mounted charger is beneficial to miniaturization of the vehicle-mounted charger, and the market demand is met. Meanwhile, the opening 113 is located on the outer side surface of the housing 11 and is not communicated with the upper cavity 31 and the lower cavity 32, so that the circuit board 20 can be prevented from being damaged due to water entering the circuit board 20, and the liquid cooling cover plate 40 is located on the outer side of the housing 11 and is not in contact with the circuit board 20, so that interference with the circuit board 20 is avoided.

Example two

The embodiment of the present application provides a vehicle, including the vehicle-mounted charger 100 as described in the first embodiment.

The technical features and technical effects of the vehicle-mounted charger 100 are the same as those in the first embodiment, and are not described herein again.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Reference throughout this specification to apparatus or components, in embodiments or applications, means or components must be constructed and operated in a particular orientation and therefore should not be construed as limiting the present embodiments. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The utility model provides a vehicle-mounted charger which characterized in that includes: the circuit board comprises a shell and at least two circuit boards;

the housing includes: the cooling component is positioned in the cavity, the cavity is divided into an upper cavity and a lower cavity by the cooling component, and the at least two circuit boards are respectively arranged in the upper cavity and the lower cavity;

at least one liquid cooling channel is arranged in the cooling part, and a liquid inlet and a liquid outlet which are communicated with the at least one liquid cooling channel are arranged on the shell.

2. The vehicle-mounted charger according to claim 1, wherein a liquid cooling channel is formed in the cooling member, the liquid inlet and the liquid outlet are respectively located at two ends of the liquid cooling channel, and the liquid inlet and the liquid outlet are respectively located at two opposite sides of the housing in the horizontal direction.

3. The vehicle-mounted charger according to claim 1, wherein at least two liquid cooling passages are provided in said cooling member, said inlet is communicated with one of said at least two liquid cooling passages, said outlet is communicated with the other of said at least two liquid cooling passages, and said inlet and said outlet are located on the same side of said housing in the horizontal direction.

4. The vehicle-mounted charger according to any one of claims 1 to 3, characterized in that the liquid cooling channel is formed by a mold core pulling process, and the housing forms at least two openings in the mold core pulling process, one of the at least two openings is the liquid inlet, and the other of the at least two openings is the liquid outlet.

5. The vehicle-mounted charger according to claim 4, characterized in that said casing comprises: the side walls enclose to form the cavity with openings at two ends, and the upper cover plate and the lower cover plate are respectively connected with the openings at two ends of the side walls in a sealing manner;

the cooling member is integrally formed with the side wall.

6. The vehicle-mounted charger according to claim 5, characterized by further comprising: the liquid cooling cover plate is connected with the side wall and used for sealing the opening;

the liquid cooling cover plate is provided with a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is used for being communicated with the liquid inlet, and the liquid outlet channel is used for being communicated with the liquid outlet.

7. The vehicle-mounted charger according to any one of claims 1 to 3, characterized in that the upper cavity is communicated with the lower cavity, the number of the circuit boards is two, and the two circuit boards are electrically connected.

8. The vehicle-mounted charger according to claim 7, characterized in that said housing is provided with at least one input port and at least one output port, said input port and said output port being electrically connected to said circuit board, respectively.

9. The vehicle-mounted charger according to any one of claims 1 to 3, characterized in that heat-conducting medium materials are arranged on the inner walls of the upper cavity and the lower cavity and on the outer surface of the cooling part.

10. A vehicle, characterized in that it comprises a vehicle-mounted charger according to any one of claims 1 to 9.

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