Charger and electric equipment

Abstract

According to the charger and the electric equipment provided by the utility model, the charger not only has better heat dissipation performance, but also is not high in maintenance difficulty. The charger comprises a housing, wherein a first accommodating groove and a second accommodating groove are formed in the housing; the circuit board is arranged in the shell, the circuit board comprises a main board and an expansion board, a controller is arranged on the main board, a first transformer and an inductor are arranged on the expansion board, the main board is arranged in the first containing groove, the first transformer and the inductor are contained in the second containing groove in an inverted mode, and the controller is arranged on the main board. The second accommodating groove is a glue pouring groove; and the conductive connecting piece is electrically connected with the main board and the expansion board, and at least one of the main board and the expansion board is detachably connected with the conductive connecting piece. Therefore, the charger provided by the embodiment of the invention not only has better heat dissipation performance, but also is low in subsequent maintenance difficulty.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charger and an electrical device. Background Art

[0002] With the rapid development of new energy electric vehicles, energy saving, environmental protection, safety and lightweight will become the main development direction of new energy electric vehicles in the future. Among them, the charger in the new energy electric vehicle has the ability to safely and automatically charge the power battery of the electric vehicle. The charger can dynamically adjust the charging current or voltage parameters based on the data provided by the battery management system, perform corresponding actions and complete the charging process.

[0003] During the operation of the charger, the high-power components inside the charger, such as transformers and inductors, will generate a lot of heat. If this heat cannot be fully transferred, the components inside the charger will be damaged due to excessive temperature. In order to improve the heat dissipation effect of the charger, the related technology will perform an overall potting treatment on the inside of the charger, and use thermal conductive glue to transfer the heat inside the charger to the charger shell, and the shell will further dissipate the heat to the external environment. Although this method can improve the problem of temperature rise inside the charger, it brings difficulty to the maintenance of the charger. Utility Model Content

[0004] The embodiments of the present application provide a charger and an electrical device, which can improve the technical problem that the charger is difficult to maintain after the potting process.

[0005] In a first aspect, an embodiment of the present application provides a charger, including:

[0006] A housing, wherein a first accommodating groove and a second accommodating groove are provided in the housing;

[0007] A circuit board is arranged in the housing, the circuit board includes a main board and an expansion board, the main board is provided with a controller, the expansion board is provided with a first transformer and an inductor, the main board is arranged in the first receiving groove, the first transformer and the inductor are invertedly accommodated in the second receiving groove, and the second receiving groove is a glue filling groove;

[0008] A conductive connector is electrically connected to the main board and the expansion board, and at least one of the main board and the expansion board is detachably connected to the conductive connector.

[0009] In one embodiment, the second accommodating groove includes a transformer accommodating groove and an inductor accommodating groove, the expansion board includes a first expansion board and a second expansion board, the number of the conductive connecting members is multiple, the first expansion board and the second expansion board are respectively detachably connected to different conductive connecting members, the first transformer is arranged on the first expansion board and invertedly accommodated in the transformer accommodating groove; the inductor is arranged on the second expansion board and invertedly accommodated in the inductor accommodating groove.

[0010] In one embodiment, the first transformer is used to convert alternating current into direct current; and / or, the conductive connecting member includes a conductive connecting column, which is integrally arranged on the main board, and the expansion board is supported on the free end of the conductive connecting column and is detachably fixedly connected to the conductive connecting column.

[0011] In one embodiment, a power consumption tube is disposed on the mainboard, and a pressure strip is disposed in the shell, and the pressure strip presses against the power consumption tube to make the power consumption tube close to the inner surface of the shell.

[0012] In one embodiment, the power dissipation tube includes a first power dissipation tube and a second power dissipation tube, wherein the first power dissipation tube is arranged flat on the main board, and the second power dissipation tube is arranged upright on the main board and backed against the inner side surface of the shell.

[0013] In one embodiment, a thickened portion is protruded on the inner surface of the shell, and the thickened portion is arranged corresponding to the power consumption tube and supports the power consumption tube; the pressure strip includes a fixed portion, a pressing portion and a bent portion, the fixed portion is connected to the thickened portion, the pressing portion presses on the power consumption tube, the bent portion is connected between the fixed portion and the pressing portion, and the bent portion is arranged in an arc shape.

[0014] In one embodiment, the housing has a first outer surface facing away from the circuit board, and a heat dissipation device is disposed on the first outer surface.

[0015] In one embodiment, the heat dissipation device includes a fan and a plurality of first heat dissipation fins, and the plurality of first heat dissipation fins are radially extended from the fan to a direction away from the fan.

[0016] In one embodiment, the shell includes a box body and a cover plate, the box body is provided with the second accommodating groove and the first accommodating groove, the cover plate is covered on the box body, and at least the box body is a metal part.

[0017] In a second aspect, an embodiment of the present application further provides an electrical device, comprising a device body, a battery and the above-mentioned charger, wherein the battery and the charger are arranged on the device body, and the charger is electrically connected to the battery.

[0018] Beneficial effects of the embodiments of the present application:

[0019] In the embodiment of the present application, the charger is improved in terms of the structure of the shell and the structure of the circuit board. Specifically, the circuit board is designed to be divided into boards, and the main board with the controller and the expansion board with high-power consumption components (such as the first transformer and the inductor) are designed as independent and different circuit boards, and the different circuit boards are detachably electrically connected through conductive connectors, so that the main board module and the expansion board module can be independently maintained, thereby reducing the maintenance difficulty of the charger; further, the interior of the shell is also partitioned and managed, and different accommodating grooves are set to install the above-mentioned main board module and expansion board module respectively, so that they can be treated differently during the potting process; for the expansion board, the first transformer and the inductor set thereon have a high heat generation, and the first transformer and the inductor need to be potted; for the main board with relatively low heat generation, it can be not potted or the amount of glue potting can be reduced, which can not only ensure the internal heat balance of the charger and prevent local temperature rise too fast; at the same time, it reduces the difficulty of removing glue when repairing or replacing the circuit board, thereby reducing the maintenance difficulty of the charger. Furthermore, the expansion board module is invertedly arranged on the second receiving groove, specifically, the first transformer and the inductor are inverted and accommodated in the second receiving groove, and the expansion board is located outside the second receiving groove. When the second receiving groove is filled with thermally conductive potting glue, the thermally conductive potting glue usually eliminates the gap between the first transformer and the inductor and the inner wall of the second receiving groove, and improves the efficiency of heat transfer between the first transformer and the inductor and the shell, but the thermally conductive potting glue will not cover the expansion board, which can not only reduce the difficulty of digging the glue when maintaining the expansion board module, but also reduce the difficulty of connecting the mainboard and the expansion board. In summary, the charger provided in the embodiment of the present application not only has better heat dissipation performance, but also has low maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a schematic diagram of an electrical device provided in an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of the three-dimensional structure of a charger provided in an embodiment of the present application at a certain viewing angle;

[0023] Figure 3 is a schematic diagram of the three-dimensional structure of a charger provided by an embodiment of the present application from another perspective;

[0024] Figure 4 is a schematic diagram of an exploded structure of a charger provided in an embodiment of the present application;

[0025] Figure 5 yes Figure 4 Enlarged view of part A in the middle;

[0026] Figure 6 yes Figure 4 Enlarged view of middle part B;

[0027] Figure 7 is a schematic diagram of the three-dimensional structure of the charger provided by the embodiment of the present application at another viewing angle, in which the cover plate of the housing is omitted;

[0028] Figure 8 is a schematic diagram of the structure of a circuit board in a charger provided in an embodiment of the present application;

[0029] Fig. 9 It is a structural schematic diagram of a mainboard in a charger provided in an embodiment of the present application;

[0030] Fig.10 It is a schematic diagram of the structure of a box in a charger provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] 100. Electrical equipment;

[0033] 10. Charger;

[0034] 1. Shell; 101. Inner side surface; 102. Inner bottom surface; 103. First outer surface; 11. First receiving groove; 12. Second receiving groove; 121. Transformer receiving groove; 122. Inductor receiving groove; 13. Thickened portion; 14. Box body; 15. Cover plate;

[0035] 2. Circuit board; 21. Main board; 22. Extension board; 221. First extension board; 222. Second extension board; 23. Controller; 24. First transformer; 25. Inductor; 26. Power consumption tube; 261. First power consumption tube; 262. Second power consumption tube;

[0036] 3. Conductive connecting piece; 31. Conductive connecting column;

[0037] 4. Pressing strip; 41. Fixing portion; 42. Pressing portion; 43. Bending portion;

[0038] 5. heat dissipation device; 51. fan; 52. first heat dissipation fin; 53. second heat dissipation fin;

[0039] 6. Connector;

[0040] 20. Battery;

[0041] 30. Equipment body. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0043] In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0044] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The terms "comprises," "includes," or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0047] In the description of the embodiments of the present application, words such as "example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of the present application is not to be interpreted as being more preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to present relative concepts in a clear manner.

[0048] First, see Figures 1 to 10 , the embodiment of the present application provides a charger 10, which can be applied to an electric device 100 that uses a battery 20 as a power source. The battery 20 is a secondary battery, which has many different forms, including but not limited to battery cells, battery modules and battery packs. Here, a secondary battery refers to a battery that can be used continuously by activating the active material by charging after the battery is discharged. Optionally, the battery 20 is a lithium-ion battery. Here, the electric device 100 can be but not limited to a vehicle, a ship or a spacecraft. The vehicle can be a new energy vehicle, and the new energy vehicle can be but not limited to a pure electric vehicle, a hybrid vehicle or an extended-range vehicle. In detail, the charger 10 can convert the input alternating current into the direct current required by the battery 20 of the electric device 100, thereby charging the battery 20 of the electric device 100. The charger 10 can also draw power from the battery 20 and power the electric devices in the electric device 100. For example, when the electric device 100 is a vehicle, the electric devices include motors, air conditioners, etc.

[0049] Specifically, the charger 10 includes a shell 1, and a cavity is formed in the shell 1 for assembling other components of the charger 10. In detail, a first accommodating groove 11 and a second accommodating groove 12 are provided in the shell 1. The first accommodating groove 11 and the second accommodating groove 12 can be arranged adjacent to each other or spaced apart. The first accommodating groove 11 and the second accommodating groove 12 are not required to be the same in shape, length, width, depth, etc. The number of the first accommodating grooves 11 can be one or more, where multiple means two or more. The number of the second accommodating grooves 12 can be one or more. As an example, see Fig.10 The number of the first receiving groove 11 is one, and the number of the second receiving groove 12 is two. The material of the housing 1 may be but is not limited to metal or plastic. The housing 1 may be but is not limited to a rectangular parallelepiped or a substantially rectangular parallelepiped shape. It is understandable that the housing 1 may also be other shapes.

[0050] Further, the charger 10 also includes a circuit board 2, which is arranged in the housing 1, that is, the circuit board 2 is accommodated in the cavity in the housing 1. In detail, the circuit board 2 includes an independent main board 21 and an expansion board 22. The main board 21 is also called a main control board, and a controller 23 is provided on the main board 21. It can be understood that the main board 21 is used as a conductive substrate, and the controller 23 is electrically connected to the main board 21. As an example, the controller 23 is a CPU chip. The expansion board 22 is also called a function board, and high-power consumption components are provided on the expansion board 22. Similarly, the expansion board 22 is also used as a conductive substrate, and the expansion board 22 and the high-power consumption components are also electrically connected. More specifically, the high-power consumption components include a first transformer 24 and an inductor 25. The first transformer 24 is used to receive an AC signal and output a DC signal. Optionally, the first transformer 24 converts AC power into high-voltage DC power. The inductor 25 is used to filter the AC signal input to the charger 10 to reduce electromagnetic interference.

[0051] For the convenience of subsequent description, the main board 21 and the components arranged on the main board 21, such as the controller 23, are collectively referred to as a main board module; the expansion board 22 and the components arranged on the expansion board 22, such as the first transformer 24 and the inductor 25, are collectively referred to as an expansion board module.

[0052] The main board 21 and the expansion board 22 are respectively installed in different areas on the housing 1. Specifically, the main board 21 is arranged in the first receiving groove 11. Optionally, the main board 21 is arranged upright in the first receiving groove 11, and the side surface of the main board 21 on which the components are arranged faces away from the housing 1. Optionally, the shape and size of the main board 21 are adapted to the shape and size of the first receiving groove 11, and the side wall of the first receiving groove 11 can limit the main board 21 to improve the stability of the main board 21. Usually, the main board 21 is as close as possible to the bottom wall of the first receiving groove 11, that is, the housing 1, so that the heat on the main board 21 is quickly transferred to the housing 1 to improve the heat dissipation efficiency. The expansion board module is arranged in an inverted manner on the second receiving groove 12, specifically, the first transformer 24 and the inductor 25 are inverted and accommodated in the second receiving groove 12, and the expansion board 22 is located outside the second receiving groove 12. As an example, the expansion board 22 is located above the second receiving groove 12. The first transformer 24 and the inductor 25 are invertedly accommodated in the second accommodation groove 12, which can be understood as the first transformer 24 and the inductor 25 are invertedly accommodated in the second accommodation groove 12, the fixed end of the first transformer 24 and the fixed end of the inductor 25 are both connected to the expansion board 22, and the free end of the first transformer 24 and the free end of the inductor 25 extend into the interior of the second accommodation groove 12. The first transformer 24 can be accommodated in the second accommodation groove 12 in whole or in part, and the inductor 25 can also be accommodated in the second accommodation groove 12 in whole or in part.

[0053] Among the first receiving groove 11 and the second receiving groove 12, at least the second receiving groove 12 is a glue potting groove, that is, the second receiving groove 12 is filled with thermal conductive potting glue. Thermal conductive potting glue refers to an insulating glue with thermal conductivity. As an example, the thermal conductive potting glue includes thermal conductive silica gel. The second receiving groove 12 is a glue potting groove, and the first transformer 24 and the inductor 25 are inverted and accommodated in the second receiving groove 12. The thermal conductive potting glue pots the first transformer 24 and the inductor 25, and eliminates the gap between the first transformer 24 and the inductor 25 and the inner wall of the second receiving groove 12, so that the heat generated by the first transformer 24 and the inductor 25 can be quickly transmitted to the housing 1 through the thermal conductive potting glue, thereby improving the heat dissipation efficiency. Since the expansion board 22 is located outside the second receiving groove 12, it can be understood that the thermal conductive potting glue will not cover the expansion board 22 inside, which can not only reduce the difficulty of digging the glue during maintenance of the expansion board module, but also will not cause interference when the expansion board 22 is connected to the mainboard 21. The first receiving groove 11 may be a glue potting groove or may not be a glue potting groove. When the first receiving groove 11 is also a glue potting groove, the first receiving groove 11 is also filled with thermally conductive potting glue, and the heat generated by the components on the mainboard 21 can also be quickly transferred to the housing 1 through the thermally conductive potting glue. However, since the heat generated by the components on the mainboard 21 is lower than the heat generated by the high-power components on the expansion board 22, the amount of thermally conductive potting glue can be appropriately reduced when filling the first receiving groove 11 with thermally conductive potting glue. As an example, the thermally conductive potting glue is only filled between the bottom wall of the first receiving groove 11 and the mainboard 21, and does not completely wrap the mainboard 21. In this way, the first receiving groove 11 can be filled with no or less thermally conductive potting glue, which can save thermally conductive potting glue on the one hand, and reduce the difficulty of removing the glue when maintaining the mainboard module on the other hand. As for the method of filling the first receiving groove 11 with thermally conductive potting glue, the thermally conductive potting glue may be first poured into the first receiving groove 11, and then the first transformer 24 and the inductor 25 are installed upside down in the first receiving groove 11, and the thermally conductive potting glue is cured; or the first transformer 24 and the inductor 25 are first installed upside down in the first receiving groove 11, and then the thermally conductive potting glue is poured into the first receiving groove 11, and then the thermally conductive potting glue is cured.

[0054] Since the main board 21 and the expansion board 22 are independently arranged, in order to realize the transmission of electrical signals between the two, the charger 10 further includes a conductive connector 3. Specifically, the conductive connector 3 is electrically connected to the main board 21, and the conductive connector 3 is also electrically connected to the expansion board 22, and the main board 21 and the expansion board 22 are electrically connected through the conductive connector 3. The conductive connector 3 can be, but is not limited to, a wire, a copper bus or a conductive column. The number of conductive connectors 3 can be one or more. In addition, at least one of the main board 21 and the expansion board 22 is detachably connected to the conductive connector 3. As an example, one end of the conductive connector 3 is integrally arranged with the main board 21, and the other end is detachably connected to the expansion board 22; or, one end of the conductive connector 3 is detachably connected to the main board 21, and the other end is integrally arranged with the expansion board 22; or one end of the conductive connector 3 is detachably connected to the main board 21, and the other end is also detachably connected to the expansion board 22. That is to say, the main board 21 and the expansion board 22 are independent of each other, and the main board 21 and the expansion board 22 are detachably connected, which means that the main board module and the expansion board module can be maintained independently, thereby reducing the difficulty of maintaining the charger 10.

[0055] The charger 10 provided in the embodiment of the present application is improved in terms of the structure of the housing 1 and the structure of the circuit board 2 . Specifically, the circuit board 2 is designed to be divided into boards, and the main board 21 provided with the controller 23 and the expansion board 22 provided with high-power consumption components (such as the first transformer 24 and the inductor 25, etc.) are designed as independent and different circuit boards, and the different circuit boards are detachably electrically connected through the conductive connector 3, so that the main board module and the expansion board module obtained can be independently maintained, thereby reducing the maintenance difficulty of the charger 10; further, the interior of the shell 1 is also partitioned and managed, and different accommodating grooves are provided to respectively install the above-mentioned main board module and expansion board module, so that they can be treated differently during the potting process; for the expansion board 22, the first transformer 24 and the inductor 25 provided thereon have a high heat generation, and the first transformer 24 and the inductor 25 need to be potted; for the main board 21 with relatively low heat generation, it is not necessary to pot it or the amount of glue potting can be reduced, which can not only ensure the internal heat balance of the charger 10 and prevent excessive local temperature rise; at the same time, it reduces the difficulty of removing glue when repairing or replacing the circuit board, thereby reducing the maintenance difficulty of the charger 10. Furthermore, the expansion board module is invertedly arranged on the second receiving groove 12, specifically, the first transformer 24 and the inductor 25 are inverted and accommodated in the second receiving groove 12, and the expansion board 22 is located outside the second receiving groove 12. When the second receiving groove 12 is filled with thermally conductive potting glue, the thermally conductive potting glue usually eliminates the gap between the first transformer 24 and the inductor 25 and the inner wall of the second receiving groove 12, and improves the efficiency of heat transfer between the first transformer 24 and the inductor 25 and the housing 1, but the thermally conductive potting glue will not cover the expansion board 22, which can not only reduce the difficulty of digging the glue during maintenance of the expansion board module, but also reduce the difficulty of connecting the mainboard 21 and the expansion board 22. In summary, the charger 10 provided in the embodiment of the present application not only has better heat dissipation performance, but also the maintenance difficulty of the charger 10 is not high.

[0056] In some embodiments, see Figure 4 and Fig.10, the number of the second accommodating grooves 12 is multiple, specifically, the multiple second accommodating grooves 12 are transformer accommodating grooves 121 and inductor accommodating grooves 122. As the name implies, the transformer accommodating groove 121 is used to accommodate the first transformer 24, and the inductor accommodating groove 122 is used to accommodate the inductor 25. The expansion board 22 is further designed to be divided into boards, and the expansion board 22 is designed to include a first expansion board 221 and a second expansion board 222. The first expansion board 221 and the second expansion board 222 are both electrically connected to the main board 21. For this purpose, the number of the conductive connectors 3 is also multiple, and the first expansion board 221 and the second expansion board 222 are detachably connected to different conductive connectors 3 respectively. Furthermore, the first transformer 24 is arranged on the first extension board 221, the first transformer 24 is invertedly accommodated in the transformer accommodating groove 121, and the first extension board 221 is located outside the transformer accommodating groove 121; the inductor 25 is arranged on the second extension board 222, the inductor 25 is invertedly accommodated in the inductor accommodating groove 122, and the second extension board 222 is located outside the inductor accommodating groove 122.

[0057] By further designing the expansion board 22 as a separate board, and accommodating the first transformer 24 and the inductor 25 in different accommodating grooves, on the one hand, the first transformer 24 and the inductor 25 can be independently maintained, thereby reducing the difficulty of maintenance. On the other hand, the transformer accommodating groove 121 and the inductor accommodating groove 122 can also be adaptively designed according to the shape, height, etc. of the first transformer 24 and the inductor 25, respectively, so that the first transformer 24 and the inductor 25 are closer to the housing 1, thereby improving the thermal conductivity and more effectively utilizing the internal space of the charger 10.

[0058] In some embodiments, see Figures 7 to 9 , the conductive connector 3 includes a conductive connecting column 31. Specifically, the conductive connecting column 31 is integrally arranged on the main board 21, so as to realize electrical connection with the main board 21. The expansion board 22 is supported on the free end of the conductive connecting column 31, and the expansion board 22 is detachably fixedly connected with the conductive connecting column 31. As an example, the conductive connecting column 31 is a U-shaped metal frame structure, and the expansion board 22 is threadedly connected with the conductive connecting column 31 by screws and nuts. Optionally, the conductive connecting column 31 is located in the first accommodating groove 11 and is arranged close to the second accommodating groove 12, a part of the expansion board 22 is located above the second accommodating groove 12, and the other part extends to the top of the first accommodating groove 11 to connect with the conductive connecting column 31. Optionally, a side wall is provided in the shell 1, which divides the cavity in the shell 1 into an adjacent first accommodating groove 11 and a second accommodating groove 12. The free end of the conductive connecting column 31 is flush with the top of the side wall, and the expansion board 22 is supported on the free end of the conductive connecting column 31 and the top of the side wall, so that the installation of the expansion board 22 is simpler, more stable and more reliable.

[0059] In some embodiments, see Figures 4 to 9, a power consumption tube 26 is also provided on the main board 21, and the power consumption tube 26 is electrically connected to the controller 23. The controller 23 serves as a control unit, and the controller 23 is also electrically connected to other components, including but not limited to the above-mentioned first transformer 24 and the inductor 25. The number of the power consumption tubes 26 can be one or more. When the number of the power consumption tubes 26 is multiple, the types of different power consumption tubes 26 can be the same or different according to functional classification. The power consumption tube 26 is also prone to generate heat during operation. For this reason, a pressure strip 4 is also provided in the shell 1, and the pressure strip 4 is pressed against the power consumption tube 26, so that the power consumption tube 26 is close to the inner surface of the shell 1, thereby improving the efficiency of heat transfer between the power consumption tube 26 and the shell 1.

[0060] In some embodiments, see Figures 4 to 9 , there are multiple power consumption tubes 26, and the multiple power consumption tubes 26 are respectively a first power consumption tube 261 and a second power consumption tube 262. Here, the first power consumption tube 261 and the second power consumption tube 262 are classified according to their installation methods on the main board 21. Specifically, the first power consumption tube 261 is arranged flat on the main board 21, the second power consumption tube 262 is arranged upright on the main board 21, and the second power consumption tube 262 is backed against the inner side surface 101 of the shell 1. Usually the shell 1 has a bottom wall and a side wall, wherein the inner surface of the bottom wall of the shell 1 is called the inner bottom surface 102, and the inner surface of the side wall of the shell 1 is called the inner side surface 101. It can be understood that the second power consumption tube 262 is usually located at the edge of the main board 21.

[0061] By vertically arranging a portion of the power dissipation tube 26 (i.e., the second power dissipation tube 262) on the main board 21, not only can the layout space of the main board 21 be saved, but the second power dissipation tube 262 also backs against the inner side surface 101 of the shell 1, so that the heat of the second power dissipation tube 262 can be more efficiently transferred to the shell 1.

[0062] In some embodiments, see Figures 4 to 10 , a thickened portion 13 is provided on the shell 1, and the thickened portion 13 protrudes from the inner surface of the shell 1. Specifically, the thickened portion 13 is provided corresponding to the power consumption tube 26 to support the power consumption tube 26. As an example, when the power consumption tube 26 includes a first power consumption tube 261 and a second power consumption tube 262, the number of the thickened portions 13 is multiple, wherein a portion of the thickened portion 13 (which may be referred to as the first thickened portion) is located on the inner bottom surface 102 of the shell 1 to support the first power consumption tube 261, and another portion of the thickened portion 13 (which may be referred to as the second thickened portion) is located on the inner side surface 101 of the shell 1 to support the second power consumption tube 262. Providing the thickened portion 13 can enable the power consumption tube 26 to better contact with the shell 1.

[0063] Furthermore, the pressure strip 4 includes a fixed portion 41, a pressing portion 42 and a bent portion 43. The fixed portion 41 is connected to the thickened portion 13. On the one hand, the thickened portion 13 is generally thicker than other parts of the housing 1, and the structural strength is improved to reduce the risk of deformation or rupture. On the other hand, the thickened portion 13 protrudes from the inner surface of the housing 1, which is convenient for connection with the fixed portion 41; the pressing portion 42 presses on the power consumption tube 26, and the bent portion 43 is connected between the fixed portion 41 and the pressing portion 42. The bent portion 43 is arranged in an arc shape to enhance the elastic deformation ability of the pressure strip 4 and improve the crimping effect of the pressing portion 42 on the power consumption tube 26. As an example, the number of the pressure strips 4 is also multiple, and the pressure strips 4 used to press the first power consumption tube 261 (which can be called the first pressure strip) and the pressure strips 4 used to press the second power consumption tube 262 (which can be called the second pressure strip) are slightly different in shape; the first pressure strip uses the middle part as the fixed part 41 to be connected to the bottom wall of the shell 1 through threaded fasteners, and both ends of the first pressure strip are the pressing parts 42 that abut on different first power consumption tubes 261; the second pressure strip uses one end of it as the fixed part 41 to be connected to the side wall of the shell 1, and the other end of the second pressure strip is the pressing part 42 that abuts on the second power consumption tube 262.

[0064] In some embodiments, the charger further includes a second transformer (not shown). As an example, the second transformer is used to convert high-voltage direct current into low-voltage direct current. The second transformer can be arranged on the main board 21 or on the expansion board 22.

[0065] In some embodiments, see Figure 3 and Fig.10 The shell 1 has a first outer surface 103, and the first outer surface 103 refers to the outer surface on the side facing away from the circuit board 2. As an example, the first outer surface 103 is a side surface facing away from the inner bottom surface 102. A heat sink 5 is provided on the first outer surface 103. It can be understood that the heat sink 5 is located outside the shell 1, and the heat sink 5 is used to dissipate heat from the shell 1. Here, the heat sink 5 can dissipate heat from the shell 1 by air cooling, water cooling or oil cooling, which is not limited here. By providing the heat sink 5, the shell 1 can be effectively cooled, thereby effectively controlling the temperature inside the charger 10.

[0066] In some embodiments, see Figure 3, the heat dissipation device 5 uses air cooling to dissipate heat from the shell 1. Specifically, the heat dissipation device 5 includes a fan 51 and a plurality of first heat dissipation fins 52, the fan 51 and the plurality of first heat dissipation fins 52 are arranged on the first outer surface 103, the fan 51 is located in the middle, and the plurality of first heat dissipation fins 52 are arranged at intervals around the fan 51. Optionally, the plurality of first heat dissipation fins 52 are radially extended outward (specifically in a direction away from the fan 51) with the fan 51 as the center. The advantage of such an arrangement is that the fan 51 can accelerate the heat on the shell 1 to be dissipated to the surroundings of the shell 1. As an example, the plurality of first heat dissipation fins 52 are integrally formed with the shell 1.

[0067] In some embodiments, the heat dissipation device 5 further includes a second heat dissipation fin 53, which is disposed on the first outer surface 103 and corresponds to the second receiving groove 12. There are multiple second heat dissipation fins 53, and the multiple second heat dissipation fins 53 are disposed in parallel on the first outer surface 103 at equal intervals, and the distance between two adjacent second heat dissipation fins 53 is less than the average distance between two adjacent first heat dissipation fins 52.

[0068] In some embodiments, see Figure 2 and Figure 3 The housing 1 includes a box body 14 and a cover plate 15. A first accommodating groove 11 and a second accommodating groove 12 are provided in the box body 14. The cover plate 15 is covered on the box body 14, so that a sealed space is formed inside the housing 1. Optionally, a sealing ring (not shown) is sandwiched between the box body 14 and the cover plate 15 to improve the waterproof performance of the charger 10. At least the box body 14 is a metal part, and the metal has high thermal conductivity, which can accelerate the heat conduction from the inside of the housing 1 to the outside. The cover plate 15 can be a metal part or a plastic part, which is not limited here.

[0069] In some embodiments, see Figure 2 and Figure 3 A connector 6 is also provided through the housing 1 , one end of the connector 6 is electrically connected to the circuit board 2 , and the other end of the connector 6 is used to be electrically connected to the battery 20 or an electrical device.

[0070] Second, see Figure 1 The embodiment of the present application also provides an electrical device 100, which includes a device body 30, a battery 20 and the above-mentioned charger 10, the battery 20 and the charger 10 are arranged on the device body 30, and the charger 10 is electrically connected to the battery 20.

[0071] The charger 10 used in the above-mentioned electrical device 100 not only has better heat dissipation performance, but also has low maintenance difficulty, thereby bringing advantages to the operation of the electrical device 100 .

[0072] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A charger, characterized in that: include: A housing, wherein a first accommodating groove and a second accommodating groove are provided in the housing; A circuit board is arranged in the housing, the circuit board includes a main board and an expansion board, the main board is provided with a controller, the expansion board is provided with a first transformer and an inductor, the main board is arranged in the first receiving groove, the first transformer and the inductor are invertedly accommodated in the second receiving groove, and the second receiving groove is a glue filling groove; A conductive connector is electrically connected to the main board and the expansion board, and at least one of the main board and the expansion board is detachably connected to the conductive connector.

2. The charger according to claim 1, characterized in that: The second accommodating groove includes a transformer accommodating groove and an inductor accommodating groove, the extension board includes a first extension board and a second extension board, the number of the conductive connecting members is multiple, the first extension board and the second extension board are respectively detachably connected to different conductive connecting members, the first transformer is arranged on the first extension board and invertedly accommodated in the transformer accommodating groove; the inductor is arranged on the second extension board and invertedly accommodated in the inductor accommodating groove.

3. The charger according to claim 1, characterized in that: The first transformer is used to convert alternating current into direct current; and / or, the conductive connecting member includes a conductive connecting column, which is integrally arranged on the main board, and the expansion board is supported on the free end of the conductive connecting column and is detachably fixedly connected to the conductive connecting column.

4. The charger according to claim 1, characterized in that: The mainboard is provided with a power consumption tube, and the shell is provided with a pressure strip, which is pressed against the power consumption tube to make the power consumption tube close to the inner surface of the shell.

5. The charger according to claim 4, characterized in that: The power dissipation tube comprises a first power dissipation tube and a second power dissipation tube. The first power dissipation tube is arranged flat on the main board, and the second power dissipation tube is arranged upright on the main board and backed against the inner side surface of the shell.

6. The charger according to claim 4, characterized in that: The inner surface of the shell is raised to provide a thickened portion, which is arranged corresponding to the power consumption tube and supports the power consumption tube; the pressure strip includes a fixed portion, a pressing portion and a bent portion, the fixed portion is connected to the thickened portion, the pressing portion presses on the power consumption tube, the bent portion is connected between the fixed portion and the pressing portion, and the bent portion is arranged in an arc shape.

7. The charger according to any one of claims 1 to 6, characterized in that: The housing has a first outer surface facing away from the circuit board, and a heat dissipation device is arranged on the first outer surface.

8. The charger according to claim 7, characterized in that: The heat dissipation device comprises a fan and a plurality of first heat dissipation fins, wherein the plurality of first heat dissipation fins are radially extended from the fan to a direction away from the fan with the fan as the center.

9. The charger according to any one of claims 1 to 6, characterized in that: The shell comprises a box body and a cover plate, the box body is provided with the second accommodating groove and the first accommodating groove, the cover plate is covered on the box body, and at least the box body is a metal part.

10. An electrical device, characterized in that: The device comprises a device body, a battery and a charger according to any one of claims 1 to 9, wherein the battery and the charger are arranged on the device body, and the charger is electrically connected to the battery.

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