Electric heater and vehicle

Abstract

The present application provides an electric heater and a vehicle, belonging to the field of vehicle technology. The electric heater forms a raised support platform on the inner surface of the side wall at one end of the shell, forms a flange structure on the outer peripheral side of the shell cover, and sets the shell cover on the support platform. The flange structure of the shell cover and the side wall at one end of the shell together form a sealing groove, and a sealing layer is filled in the sealing groove, so that the shell cover and the shell are connected and fixed by the sealing layer and sealed at the connection position, meeting the requirements of dustproof and waterproof. That is, it is only necessary to form a circle of support platforms on the inner surface of the side wall of the shell, and use the side wall at one end of the shell, the support platform and the shell cover to form a sealing groove to achieve a sealing effect. The space occupied in the internal accommodating cavity of the shell is small, which is conducive to reducing the volume size of the shell. There is no need to drill threaded holes on the shell cover and the shell, and there is no need to assemble bolts during assembly, which simplifies the production and assembly process and reduces costs.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electric heater and a vehicle. Background Art

[0002] With the development of motor vehicle technology, people are paying more and more attention to the driving experience of drivers and passengers. For example, in new energy vehicles, electric heaters are usually installed on vehicles to meet the needs of heating, defrosting and heating and heat preservation of battery packs inside the vehicle.

[0003] The shell of the heater device usually includes a shell and a shell cover. In order to meet the dust and water resistance requirements of the heater device, a receiving groove is formed on the end surface of the shell facing the shell cover. The sealing ring is arranged in the receiving groove. The shell cover is arranged on the shell and abuts against the sealing ring. The shell and the shell cover are also provided with threaded holes. The shell and the shell cover are fastened together by fastening bolts, etc., so that the shell and the shell cover press the sealing ring.

[0004] However, the above electric heater has the problem of occupying a large space in the shell, which makes the volume size of the shell larger. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide an electric heater and a vehicle, which meet the dust and water resistance requirements of the electric heater, reduce the volume size of the shell, and help reduce the weight and cost of the electric heater.

[0006] A first aspect of an embodiment of the present application provides an electric heater, comprising a shell, a shell cover and a sealing layer, wherein one end of the shell has an opening, the shell has a accommodating cavity connected to the opening, the inner surface of the side wall at one end of the shell has a raised support platform, and the support platform is arranged around the opening.

[0007] The outer peripheral side of the shell cover has a flange structure, the shell cover is set on the supporting platform, the shell cover covers the opening, and the flange structure of the shell cover and the side wall of one end of the shell form a sealing groove, the sealing layer is filled in the sealing groove, and the shell cover and the shell are connected by the sealing layer.

[0008] By filling a sealing layer in the sealing groove surrounded by the shell and the shell cover, the connection between the shell and the shell cover is achieved, and the sealing of the shell and the shell cover at the connection position is achieved, meeting the dust and water proof requirements of the electric heater. That is, it is only necessary to form a circle of support platform on the inner surface of the side wall of the shell, and the side wall at one end of the shell and the support platform and the shell cover can be used to form a sealing groove for accommodating the sealing layer to achieve a sealing effect. Compared with the related art, the demand for the thickness of the shell side wall is smaller, and the space occupied by the internal accommodating cavity of the shell is smaller, which is conducive to reducing the volume size of the shell and meeting the requirements of miniaturization design. In addition, there is no need to drill threaded holes on the shell cover and the shell. During actual assembly, the shell cover is placed on the support platform to form a sealing groove between the shell and the shell cover, that is, the assembly of the shell cover and the shell is completed, and then the sealing groove is filled with a sealing layer. There is no need to assemble sealing rings, bolts and other operations, which simplifies the production and assembly process and reduces costs.

[0009] In a possible implementation, the shell cover includes a cover body and a flange structure, and the flange structure is arranged around the cover body.

[0010] The flange structure includes a first shell wall and a second shell wall. The first shell wall and the cover body are respectively located on both sides of the second shell wall, and there is an angle between the first shell wall and the second shell wall. The side of the first shell wall facing away from the second shell wall is in contact with the support platform. The first shell wall, the second shell wall and the side wall at one end of the shell together form a sealing groove.

[0011] In this way, the sealant layer can fully contact and bond with the first shell wall, the second shell wall and part of the side wall of the shell, which is conducive to improving the connection strength between the shell cover and the shell. Part of the side wall at one end of the shell surrounds the outer circumference of the shell cover, which is also conducive to improving the limiting and fixing effect on the shell cover, and facilitates the accurate and rapid assembly of the shell cover and the shell.

[0012] In a possible implementation, the flange structure has an insertion position, the support platform has an insertion piece that matches the insertion position, the insertion piece is plug-in connected to the insertion position and has an interference fit, and the shell cover and the shell are electrically connected through the insertion piece and the insertion position.

[0013] In this way, the shell cover and the shell are electrically connected through the plug-in and the plug-in position, thereby achieving equipotential grounding and meeting the safety grounding requirements of the electric heater. During actual assembly, the plug-in position on the shell cover is aligned with the plug-in on the shell, and the shell cover is pressed onto the support platform so that the plug-in position and the plug-in are plug-connected and interference fit is achieved, thus achieving the assembly of the shell cover and the shell. The assembly method is simple and easy to operate, and it is conducive to reducing assembly costs while meeting the equipotential grounding requirements.

[0014] In a possible implementation, the first shell wall has a first through hole;

[0015] The insertion position comprises a plurality of spaced arcuate ribs, the plurality of arcuate ribs are protruded on the first shell wall, the plurality of arcuate ribs are arranged around the through hole, and one end of the plurality of arcuate ribs facing away from the first shell wall forms a second through hole.

[0016] The insert comprises a mounting column, the mounting column protrusion is arranged on the supporting platform, one end of the mounting column passes through the first through hole and the second through hole, and the mounting column is fitted with the inner surface of the arc rib.

[0017] In this way, when the mounting column passes through the first through hole and the second through hole, the plurality of arcuate ribs will be deformed to a certain extent, so that the mounting column and the plurality of arcuate ribs are interference-fitted. The deformation recovery force of the arcuate ribs can make the inner surface of the arcuate ribs fit closely with the mounting column, which can not only ensure the firm insertion between the mounting column and the plurality of arcuate ribs, but also achieve the close fit between the mounting column and the arcuate ribs, so as to achieve electrical contact connection.

[0018] In a possible implementation, the outer diameter of the mounting column gradually decreases from one end of the mounting column connected to the supporting platform to one end of the mounting column facing away from the supporting platform.

[0019] In this way, it is convenient for the end of the mounting column facing away from the supporting platform to pass through the first through hole and the second through hole, and it is ensured that the mounting column can be interference-fitted and tightly fitted with the arc rib.

[0020] In a possible implementation, the mounting column has a tapered buckle portion on one end facing away from the support platform, and the tail end of the buckle portion is located between the tip of the buckle portion and the mounting column. The buckle portion is located on the side of the arc rib facing away from the first shell wall, and the tail end of the buckle portion abuts against one end of the arc rib facing away from the first shell wall.

[0021] In this way, the design of the buckle portion can further improve the plug-in connection strength between the arc rib and the mounting column, prevent the shell and the shell cover from loosening, and improve the connection strength between the shell and the shell cover.

[0022] In a possible implementation, there are a plurality of insertion positions on two opposite sides of the flange structure, and a plurality of insertion members on two opposite sides of the support platform, so as to ensure the connection strength between the shell and the shell cover.

[0023] In a possible implementation, the shell cover is a stamped metal structural member, so that the thickness of the shell cover is small, the weight of the shell cover is reduced, and it is conducive to the lightweight design of the electric heater.

[0024] The shell is a die-cast metal structural part, so the strength of the entire electric heater can be ensured.

[0025] In a possible implementation, the thickness of the shell cover is 0.8 mm to 1 mm. In this way, the shell cover has a smaller wall thickness and significantly reduces the weight of the shell cover.

[0026] A second aspect of an embodiment of the present application provides a vehicle, comprising a vehicle body and any one of the above-mentioned electric heaters, wherein the electric heater is arranged and mounted on the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of an electric heater provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 Schematic diagram of the split structure of the electric heater;

[0030] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the electric heater along AA;

[0031] Figure 4 for Figure 3 Schematic diagram of the structure of the middle shell cover;

[0032] Figure 5 for Figure 3 A cross-sectional front view of the electric heater;

[0033] Figure 6 for Figure 3 A schematic diagram of the structure of the middle shell;

[0034] Figure 7 for Figure 2 A schematic diagram of the structure after the middle shell and the shell cover are assembled;

[0035] Figure 8 for Figure 4 A partial enlarged schematic diagram of part A;

[0036] Fig. 9 for Figure 7 A partial enlarged schematic diagram of part B;

[0037] Fig.10 for Figure 7 A cross-sectional front view of the middle housing and the housing cover at the insertion position and the insertion part position;

[0038] Fig.11 A front cross-sectional view of a shell and a shell cover at an insertion position and an insertion part position in another electric heater provided in an embodiment of the present application.

[0039] Reference numerals:

[0040] 100-electric heater;

[0041] 101-housing; 102-accommodating chamber;

[0042] 10-housing; 10a-side wall; 10b-end surface; 11-opening; 12-support platform; 121-support surface; 122-insertion piece; 123-mounting column; 124-buckle portion;

[0043] 20-shell cover; 21-cover body; 22-flange structure; 221-first shell wall; 222-second shell wall; 223-insertion position; 224-arc rib; 225-first through hole; 226-second through hole;

[0044] 30-sealing groove;

[0045] 40-sealant layer;

[0046] 103-input connector; 104-output connector. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In order to improve the driving experience of the vehicle, electric heaters are usually installed on the vehicle to meet the heating and heat preservation needs. At present, most of the various types of electric heaters are high-voltage safety devices, and the heaters themselves are often subjected to hot and cold shocks. Therefore, the heaters need to meet the IP67 and IP6K9K dust and water resistance requirements, and ensure that the entire shell of the heater is grounded at the same potential. In addition, with the pursuit of vehicle cabin space and multi-functionality, electric heaters and other equipment on vehicles are gradually developing in the direction of miniaturization and lightweight design.

[0049] The shell and shell cover of a common electric heater housing are fastened together by bolts, and a receiving groove is provided on the end surface of the shell facing the shell cover, and a sealing ring is provided in the receiving groove. The sealing ring is pressed while the shell and the shell cover are fastened to achieve a sealing effect, meeting the requirements of waterproof and dustproof. However, in order to ensure the strength of the shell and the connection between the shell and the shell cover, the wall thickness of the shell with the receiving groove is relatively large, occupying a larger internal space of the shell. In order to meet the internal space requirements of the shell, the volume size of the shell will be relatively large, which is not conducive to meeting the requirements of miniaturized design of equipment in current vehicles.

[0050] Moreover, due to the strength requirement of bolt fastening, the shell cover is usually a die-cast structure, which is thick and heavy, which is not conducive to the lightweight design of the entire electric heater. The shell and the shell cover are fixed by bolt fastening, which requires drilling threaded holes on the shell and the shell cover, and assembling bolts when assembling the shell and the shell cover. The process is relatively cumbersome, and the production and assembly costs are relatively high.

[0051] Based on this, an embodiment of the present application provides an electric heater, which is applied to a vehicle, for example, assembled in the body of a vehicle, and is used to meet the heating and heat preservation requirements of the body. The electric heater is provided with a raised support platform on the inner surface of the side wall at one end of the shell, and a flange structure is formed on the outer peripheral side of the shell cover, so that the shell cover is arranged on the support platform, and the flange structure of the shell cover and the side wall at one end of the shell together form a sealing groove, and a sealing layer is filled in the sealing groove, so that the shell cover and the shell are connected and fixed by the sealing layer, and the connection position between the shell and the shell cover is sealed, so as to meet the dustproof and waterproof requirements of the electric heater. That is, it is only necessary to form a circle of support platforms on the inner surface of the side wall of the shell, and the side wall at one end of the shell, the support platform and the shell cover can be used to form a sealing groove for accommodating the sealing layer to achieve a sealing effect. Compared with the related art, the requirement for the thickness of the shell side wall is smaller, and the space occupied in the internal accommodating cavity of the shell is smaller, which is conducive to reducing the volume size of the shell and meeting the requirements of miniaturization design. In addition, there is no need to drill threaded holes on the shell cover and the shell body. During actual assembly, the shell cover is placed on a supporting platform to form a sealing groove between the shell and the shell cover. The assembly of the shell cover and the shell is completed, and then the sealing layer is filled in to form a sealing layer. There is no need to assemble sealing rings, bolts, etc., which simplifies the production and assembly process and reduces costs.

[0052] Figure 1 A schematic diagram of the structure of an electric heater provided in an embodiment of the present application.

[0053] See also Figure 1 As shown, the electric heater 100 includes a shell 101, and the shell 101 has a sealed accommodating cavity (not shown in the figure), and the structural components for realizing the heating and heat preservation functions can be arranged in the accommodating cavity inside the shell 101. For example, taking the electric heater 100 as a liquid heater that realizes the heating and heat preservation functions by using liquid as an example, the heater can have a pipeline structure inside for the flow of liquid.

[0054] An input connector 103 and an output connector 104 may also be provided on the housing 101. The input connector 103 and the output connector 104 are connected to the accommodating cavity inside the housing 101. Liquid may enter the pipeline structure of the accommodating cavity through the input connector 103, and the liquid may also be discharged through the output connector 104 to realize liquid circulation.

[0055] Among them, the shell 101 includes a shell body 10 and a shell cover 20. The interior of the shell body 10 can have the above-mentioned accommodating cavity. The shell cover 20 can be fixed on one side of the shell body 10. The shell body 10 and the shell cover 20 are sealed and connected through a sealant layer 40 to seal the above-mentioned accommodating cavity.

[0056] In the embodiment of the present application, there is no restriction on the contour shapes of the shell, the shell cover and the sealant layer, and they can be specifically selected and set according to the actual design requirements of the electric heater on the vehicle.

[0057] Figure 2 for Figure 1 Schematic diagram of the disassembled structure of the medium electric heater.

[0058] See also Figure 2 As shown, the shell 10 has a housing cavity 102 inside, and one end of the shell 10 has an opening 11, which is connected to the housing cavity 102. Structural components for achieving heating and heat preservation functions can be arranged in the housing cavity 102 through the opening 11.

[0059] The inner surface of the side wall 10a at one end of the shell 10 also has a raised support platform 12. The support platform 12 can be a structure formed on the inner surface of the side wall 10a of the shell 10 and protruding toward the accommodating cavity 102. The side of the support platform 12 facing the shell cover 20 can have a support surface 121.

[0060] The support platform 12 can be arranged around the opening 11, that is, an annular support platform 12 is formed on the inner surface of the side wall 10a at one end of the shell 10. The support platform 12 can be a continuous annular structure, and a raised support platform 12 is formed on the entire circumference of the inner surface of the side wall 10a at one end of the shell 10.

[0061] Alternatively, in some examples, the support platform 12 may be a discontinuous annular structure, that is, a plurality of protrusion structures may be formed on the inner surface of the side wall 10a at one end of the shell 10, and the plurality of protrusion structures may be spaced apart around the circumference of the side wall 10a at one end of the shell 10 (the circumference of the opening 11).

[0062] It should be noted that the support platform 12 is located on the inner surface of the side wall 10a at one end of the shell 10, the support platform 12 is located in the accommodating cavity 102, and there is a certain distance between the support platform 12 and the end surface 10b of the side wall 10a at one end of the shell 10. For example, the thickness direction of the shell 10 is taken as the z direction in the figure, that is, the height of the support surface 121 of the support platform 12 facing the shell cover 20 in the z direction is lower than the height of the end surface 10b of the side wall 10a at one end of the shell 10 in the z direction, so that a part of the side wall 10a at one end of the shell 10 protrudes from the support platform 12 in the z direction.

[0063] A flange structure 22 is formed on the shell cover 20 , and the flange structure 22 is arranged around the outer circumferential side of the shell cover 20 .

[0064] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the electric heater along AA.

[0065] Combination Figure 3 As shown, the shell cover 20 is disposed on the housing 10, and the shell cover 20 can be disposed on the support platform 12, and the support platform 12 can provide reliable limiting support for the shell cover 20. The shell cover 20 covers the opening of the housing 10, thereby closing the accommodating cavity of the housing 10.

[0066] The flange structure 22 of the shell cover 20 and a portion of the side wall 10a at one end of the shell 10 can enclose a sealing groove 30 (see Figure 5 As shown). The sealant layer 40 can be filled in the sealing groove 30. The sealant layer 40 is a layer formed by a sealant, which is a colloidal substance with fluidity and adhesion. The formed sealant layer 40 also has good adhesion, so that the shell cover 20 and the shell 10 are firmly connected together through the sealant layer 40. The sealant layer 40 is filled in the sealing groove 30 surrounded by the shell 10 and the shell cover 20, so as to achieve the sealing of the shell 10 and the shell cover 20 at the connection position, and meet the IP67 and IP6K9K dustproof and waterproof requirements of the shell 101.

[0067] By filling the sealing layer 40 in the sealing groove 30 surrounded by the shell 10 and the shell cover 20, the reliable connection between the shell 10 and the shell cover 20 can be met, and the dust and water resistance requirements of the outer shell of the electric heater 100 can be met. And it is only necessary to form a circle of support platform 12 on the inner surface of the side wall 10a of the shell 10, and the side wall 10a at one end of the shell 10 and the support platform 12 and the shell cover 20 can be used to surround the sealing groove 30 for accommodating the sealing layer 40 to achieve a sealing effect. Compared with the related art, the requirement for the wall thickness of the side wall 10a of the shell 10 is smaller, and the space occupied in the internal accommodating cavity of the shell 10 is smaller, which is conducive to reducing the volume size of the shell 10 and meeting the requirements of miniaturization design.

[0068] In addition, there is no need to drill threaded holes on the shell cover 20 and the housing 10. During actual assembly, the shell cover 20 is placed on the support platform 12 to form a sealing groove 30 between the housing 10 and the shell cover 20, and the assembly of the shell cover 20 and the housing 10 is completed. Then, the sealing groove 30 is filled with a sealing rubber layer 40, and there is no need to assemble sealing rings, bolts, etc., which simplifies the production and assembly process and reduces costs.

[0069] Exemplarily, after the shell cover 20 and the shell body 10 are assembled, the sealant can be evenly squeezed into the sealing groove 30 by using equipment such as dispensing, so that the sealant can be in good contact with the groove wall of the sealing groove 30. The sealant in the sealing groove 30 is cured by moisture curing or heat curing to form a sealant layer 40, so that the sealant layer 40 is well filled in the sealing groove 30.

[0070] Figure 4 for Figure 3 Schematic diagram of the structure of the middle shell cover.

[0071] For example, see Figure 4 As shown, the shell cover 20 also includes a cover body 21, and a flange structure 22 is arranged on the circumference of the cover body 21. The flange structure 22 is arranged around the cover body 21, and the flange structure 22 can be located on one side of the cover body 21, such as the flange structure 22 is located on one side of the cover body 21 along the thickness direction.

[0072] The flange structure 22 may include a first shell wall 221 and a second shell wall 222. The cover 21 and the first shell wall 221 may be located on both sides of the second shell wall 222, respectively. For example, the housing 10 and the first shell wall 221 may be located on both sides of the second shell wall 222 in the thickness direction. One side of the second shell wall 222 is connected to the cover 21, and the other side of the second shell wall 222 is connected to the first shell wall 221.

[0073] There is an angle between the first shell wall 221 and the second shell wall 222. The angle may refer to a non-zero angle formed between the extension direction of the first shell wall 221 and the extension direction of the second shell wall 222, that is, a corner structure is formed at the connection between the first shell wall 221 and the second shell wall 222.

[0074] Figure 5 for Figure 3 Cross-sectional front view of the medium electric heater.

[0075] For example, combined with Figure 5 As shown, with the direction parallel to the entire cover body 21 as the horizontal direction, such as the x direction in the figure, the extension direction of the first shell wall 221 can be parallel to the cover body 21, such as the horizontal direction. The extension direction of the second shell wall 222 can be perpendicular to the cover body 21, such as along the thickness direction (such as the z direction in the figure), so that the outer contour of the flange structure 22 is L-shaped.

[0076] After the shell cover 20 is assembled with the shell body 10, the side of the first shell wall 221 facing away from the second shell wall 222 can be in contact with the support surface of the support platform 12. In this way, the first shell wall 221, the second shell wall 222 and a part of the side wall 10a at one end of the shell body 10 together form a sealing groove 30, and the sealant layer 40 is filled in the sealing groove 30. The sealant layer 40 can fully contact and bond with the first shell wall 221, the second shell wall 222 and a part of the side wall 10a of the shell body 10, which is conducive to improving the connection strength of the shell cover 20 and the shell body 10.

[0077] Part of the side wall 10a at one end of the housing 10 surrounds the outer circumference of the housing cover 20, which is also conducive to enhancing the limiting and fixing effect on the housing cover 20. In addition, during actual assembly, the side wall 10a at one end of the housing 10 can also play a guiding and positioning role in the assembly of the housing cover 20, facilitating accurate and rapid assembly of the housing cover 20 and the housing 10.

[0078] In order to achieve equipotential grounding of the housing 10 and the housing cover 20, an insertion position 223 can be provided on the flange structure 22 of the housing cover 20 (refer to Figure 4 shown).

[0079] Figure 6 for Figure 3 Schematic diagram of the structure of the middle shell.

[0080] See also Figure 6 As shown, an insert 122 may be provided on the support platform 12 of the housing 10 , and the insert 122 may be plugged into and matched with the insert position 223 .

[0081] Figure 7 for Figure 2 Schematic diagram of the structure after the middle shell and shell cover are assembled.

[0082] Combination Figure 7 As shown, when the shell cover 20 is placed on the supporting platform (not shown) of the shell 10, the insert 122 is inserted and connected with the insert position 223 to achieve interference fit. Through the insertion connection between the insert 122 and the insert position 223, the pre-tightening force between the shell 10 and the shell cover 20 can be increased to prevent the shell cover 20 and the shell 10 from loosening, which is conducive to further improving the connection strength between the shell 10 and the shell cover 20.

[0083] It should be noted that the shell 10 and the shell cover 20 can both be conductive structural parts. For example, the shell 10 and the shell cover 20 can be metal structural parts, the insertion position 223 on the shell cover 20 can also be a conductive structural part, and the insertion part 122 on the shell 10 can also be a conductive structural part.

[0084] The plug-in connection and interference fit between the plug-in component 122 and the plug-in position 223 can achieve effective electrical contact while the plug-in component 122 and the plug-in position 223 are tightly connected, so that the plug-in component 122 and the plug-in position 223 can be electrically connected, and the shell cover 20 and the shell 10 can be electrically connected through the plug-in component 122 and the plug-in position 223, and then grounded, thereby achieving equipotential grounding of the shell 10 and the shell cover 20, and meeting the safety grounding requirements of the electric heater 100.

[0085] During actual assembly, the insertion position 223 on the shell cover 20 is aligned with the insertion piece 122 on the shell body 10, and the shell cover 20 is pressed onto the supporting platform so that the insertion position 223 and the insertion piece 122 are plugged and connected to achieve an interference fit, thereby achieving assembly of the shell cover 20 and the shell body 10. The assembly method is simple and easy to operate, and is conducive to reducing assembly costs while meeting the requirements of equal potential grounding of the shell body 10 and the shell cover 20.

[0086] It should be noted that during actual assembly, the shell cover 20 can be set on the support platform with the help of crimping tools and other equipment, and the insert 122 can be inserted into the insert position 223 to achieve interference fit, thereby achieving assembly between the shell cover 20 and the housing 10.

[0087] There may be multiple inserting pieces 122 on the housing 10 and multiple inserting positions 223 on the housing cover 20, and the number of inserting pieces 122 may correspond to the number of inserting positions 223. For example, multiple inserting positions 223 may be provided on two opposite sides of the flange structure 22, and multiple inserting pieces 122 may be provided on two opposite sides of the support platform, respectively, to ensure the connection strength between the housing 10 and the housing cover 20.

[0088] The structure of the insert 122 and the insert position 223 can be various. For example, a protruding column can be formed on the first shell wall, and a through hole can be opened on the protruding column, and the through hole can be used as the insert position. A protruding plug column can be set on the support platform of the shell, and the plug column can be used as an insert, and the plug column can be inserted into the through hole and have an interference fit with the through hole.

[0089] Figure 8 for Figure 4 A partial enlarged schematic diagram of part A.

[0090] Or, for example, see Figure 8 As shown, the insertion position 223 may include a plurality of spaced arcuate ribs 224 , wherein the plurality of arcuate ribs 224 are protrudingly disposed on the first shell wall 221 , and the plurality of arcuate ribs 224 are disposed around the through hole, and there is a gap between two adjacent arcuate ribs 224 .

[0091] For example, the arcuate ribs 224 may be formed integrally on the first shell wall 221 when the shell cover is formed by stamping or the like, such as an arcuate rib structure formed by stamping, bending or the like. The volume size of the arcuate ribs 224 may be relatively small, and a plurality of arcuate ribs 224 may be arranged at intervals so that the plurality of arcuate ribs 224 may produce a certain elastic deformation when subjected to force.

[0092] From one end of the arc rib 224 connected to the first shell wall 221 to the end away from the first shell wall 221, each arc rib 224 can be inclined toward the center line of the first through hole 225, and the ends of multiple arc ribs 224 away from the first shell wall 221 can surround the second through hole 226, then the aperture of the second through hole 226 is smaller than the aperture of the first through hole 225, and the center line of the second through hole 226 can be the same as the center line of the first through hole 225.

[0093] Fig. 9 for Figure 7 A partial enlarged schematic diagram of part B.

[0094] See also Fig. 9 As shown, the housing 10 may be provided with a mounting post 123 (see Figure 6 As shown), a protruding mounting post 123 may be provided on the supporting surface 121 of the supporting platform 12, and the mounting post 123 may serve as an insert.

[0095] The shell cover is assembled on the shell body so that when the first shell wall of the shell cover is placed on the support platform, the end of the mounting column 123 facing away from the support platform can pass through the first through hole and the second through hole, and the outer diameter of the portion of the mounting column 123 passing through the first through hole can be less than or equal to the inner diameter of the first through hole, which means that the outer diameter of the portion of the mounting column 123 passing through the first through hole 225 can be smaller than the size of the second through hole.

[0096] Fig.10 for Figure 7 A cross-sectional front view of the middle housing and the housing cover at the insertion position and the insertion part position.

[0097] Combination Fig.10 As shown, when the mounting post 123 passes through the second through hole, the plurality of arcuate ribs 224 will be deformed to a certain extent, thereby realizing interference fit between the mounting post 123 and the plurality of arcuate ribs 224. The deformation recovery force of the arcuate ribs 224 can make the inner surface (the side facing the second through hole) of the arcuate ribs 224 fit closely with the mounting post 123, thereby ensuring a firm plug-in connection between the mounting post 123 and the plurality of arcuate ribs 224, and realizing a close fit between the mounting post 123 and the arcuate ribs 224, thereby realizing electrical contact connection.

[0098] The mounting column 123 may be a circular column, a cubic column, etc. Alternatively, in some examples, the mounting column 123 may also be a columnar structure with a variable outer diameter.

[0099] For example, from one end of the mounting column 123 connected to the support platform 12 to the end of the mounting column 123 facing away from the support platform 12 (refer to Figure 6 As shown in FIG. 1 , the outer diameter of the mounting column 123 can be gradually reduced, so that the mounting column 123 has a conical column structure. This can facilitate the end of the mounting column 123 facing away from the support platform 12 to pass through the first through hole and the second through hole, and ensure that the mounting column 123 can be interference-fitted with the arc rib and fit tightly.

[0100] Fig.11 A front cross-sectional view of a shell and a shell cover at an insertion position and an insertion part position in another electric heater provided in an embodiment of the present application.

[0101] Or, in some examples, see Fig.11 As shown, a snap-on portion 124 may be provided on one end of the mounting column 123 facing away from the supporting platform. The snap-on portion 124 may be conical and may include a tail end and a top end. The outer diameter of the snap-on portion 124 may gradually decrease in the direction from the tail end to the top end.

[0102] When the mounting column 123 is plugged into the plurality of arcuate ribs 224, the buckle portion 124 of the mounting column 123 can pass through the first through hole and the second through hole. After the housing 10 and the housing cover 20 are assembled, the buckle portion 124 can be located on the side of the arcuate rib 224 facing away from the first housing wall 221, and the tail end of the buckle portion 124 is located to abut against the end of the arcuate rib 224 facing away from the first housing wall 221. The design of the buckle portion 124 can further improve the plug-in connection strength of the arcuate rib 224 and the mounting column 123, prevent the housing and the housing cover from loosening, and improve the connection strength of the housing and the housing cover.

[0103] In the embodiment of the present application, the shell and the shell cover are well connected through the sealing layer and the interference fit between the plug-in and the plug-in position. Compared with the related art, there is no need to drill threaded holes on the shell cover and the shell is not fixed with threaded fastening, so the strength requirement for the shell cover is relatively small.

[0104] The shell cover can be a metal structural part formed by stamping. Under the condition that the connection strength and sealing requirements between the shell cover and the shell body are met, the thickness of the shell cover is small, which reduces the weight of the shell cover, thereby helping to reduce the weight of the entire shell and realize the lightweight design of the electric heater.

[0105] For example, the shell cover may have a thickness of 0.8 mm to 1 mm, so that the shell cover has a smaller wall thickness, significantly reducing the weight of the entire shell. For example, the shell cover may have a thickness of 0.87 mm to 1 mm, and the shell cover wall thickness is reduced as much as possible while ensuring the strength performance of the shell cover.

[0106] The shell may be a metal structure formed by die-casting to improve the strength of the entire shell. For example, the shell may be an aluminum shell formed by aluminum die-casting.

[0107] 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, or it can be 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.

[0108] The device or element referred to in this application or by implication must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application. In the description of this application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0109] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric heater, characterized in that: include: A shell, one end of which has an opening, the shell has a receiving cavity in communication with the opening, the inner surface of a side wall at one end of the shell has a raised supporting platform, and the supporting platform is arranged around the opening; A shell cover, wherein the outer peripheral side of the shell cover has a flange structure, the shell cover is arranged on the support platform, the shell cover covers the opening, and the flange structure of the shell cover and the side wall of one end of the shell body together form a sealing groove; A sealing adhesive layer is filled in the sealing groove, and the shell cover and the shell are connected through the sealing adhesive layer.

2. The electric heater according to claim 1, characterized in that: The shell cover comprises a cover body, the flange structure is located on one side of the cover body, and the flange structure is arranged around the cover body; The flange structure includes a first shell wall and a second shell wall, the first shell wall and the cover body are respectively located on both sides of the second shell wall, and there is an angle between the first shell wall and the second shell wall, the side of the first shell wall facing away from the second shell wall is in contact with the support platform, and the first shell wall, the second shell wall and the side wall at one end of the shell together form the sealing groove.

3. The electric heater according to claim 2, characterized in that: The flange structure is provided with an insertion position, the support platform is provided with an insertion piece matched with the insertion position, the insertion piece is plug-connected with the insertion position and has an interference fit, and the shell cover and the shell are electrically connected through the insertion piece and the insertion position.

4. The electric heater according to claim 3, characterized in that: The first shell wall has a first through hole; The insertion position includes a plurality of spaced arcuate ribs, the plurality of arcuate ribs are protrudingly arranged on the first shell wall, the plurality of arcuate ribs are arranged around the first through hole, and from one end of the arcuate rib connected to the first shell wall to the end away from the first shell wall, each arcuate rib is inclined toward the center line of the first through hole, and the ends of the plurality of arcuate ribs away from the first shell wall form a second through hole; The insert comprises a mounting post, the mounting post protrusion is arranged on the supporting platform, one end of the mounting post passes through the first through hole and the second through hole, and the mounting post is in contact with the inner surface of the arc rib.

5. The electric heater according to claim 4, characterized in that: The outer diameter of the mounting column gradually decreases from one end of the mounting column connected to the supporting platform to one end of the mounting column facing away from the supporting platform.

6. The electric heater according to claim 4, characterized in that: The mounting column has a tapered buckle portion on one end facing away from the supporting platform, and the tail end of the buckle portion is located between the top end of the buckle portion and the mounting column; The buckle portion is located at a side of the arc-shaped rib facing away from the first shell wall, and a tail end of the buckle portion abuts against an end of the arc-shaped rib facing away from the first shell wall.

7. The electric heater according to any one of claims 3 to 6, characterized in that: There are a plurality of inserting positions on two opposite sides of the flange structure, and there are a plurality of inserting parts on two opposite sides of the support platform.

8. The electric heater according to any one of claims 1 to 6, characterized in that: The shell cover is a stamped metal structural part; The housing is a die-cast metal structural component.

9. The electric heater according to claim 8, characterized in that: The shell cover has a thickness of 0.8 mm to 1 mm.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body and the electric heater as claimed in any one of claims 1 to 9, wherein the electric heater is installed in the vehicle body.

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