Integrated magnetic device, vehicle-mounted power supply and vehicle

Abstract

The utility model discloses an integrated magnetic device, a vehicle-mounted power supply and a vehicle, and relates to the technical field of power supplies, the integrated magnetic device comprises a first magnetic integrated assembly formed by an integrated transformer and a second magnetic integrated assembly formed by an output inductor and a second transformer; the output inductor and the second transformer are arranged in a common-back mode. The first magnetic integrated assembly and the second magnetic integrated assembly are arranged in a back-to-back mode. According to the technical scheme, the weight and the size of a magnetic device in the vehicle-mounted power supply can be reduced, the weight and the size of the vehicle-mounted power supply are further reduced, the space occupied by the vehicle-mounted power supply in an electric vehicle is small, and the space utilization rate of the electric vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply technical field especially relates to an integrated magnetic device, vehicle-mounted power supply and vehicle. BACKGROUND

[0002] The existing vehicle-mounted power supply includes OBC main transformer and DC / DC main transformer two components, and the OBC main transformer and the DC / DC main transformer are independently arranged, and both components have magnetic devices, so that the overall volume and weight are large, resulting in the volume and weight of the vehicle-mounted power supply are large. SUMMARY

[0003] The utility model discloses an integrated magnetic device, vehicle-mounted power supply and vehicle, aims at reducing the weight and volume of the magnetic device in the vehicle-mounted power supply, and then reducing the weight and volume of the vehicle-mounted power supply, so that the vehicle-mounted power supply occupies the small space of electric vehicle, improves the space utilization of electric vehicle.

[0004] To achieve the above object, the utility model provides an integrated magnetic device, comprising:

[0005] The first magnetic integrated assembly is composed of the integrated transformer;

[0006] The second magnetic integrated assembly is composed of the output inductance and the second transformer, and the output inductance and the second transformer are arranged oppositely;

[0007] The first magnetic integrated assembly and the second magnetic integrated assembly are arranged oppositely.

[0008] In an embodiment, the integrated transformer includes a first magnetic core and a high-voltage winding, the high-voltage winding is wound on the first magnetic core, and the leakage inductance between the high-voltage windings constitutes the resonance inductance of the first magnetic integrated assembly;

[0009] And / or, the leakage inductance between the high-voltage winding and the first magnetic core constitutes the resonance inductance of the first magnetic integrated assembly.

[0010] In an embodiment, the second transformer includes a second magnetic core and a low-voltage winding, the low-voltage winding and the output inductance are wound on the second magnetic core respectively, the second magnetic core is provided with an opening, and the first magnetic core is arranged at the opening of the second magnetic core to form at least one closed magnetic circuit with the second magnetic core.

[0011] In an embodiment, the second magnetic core is an E-shaped magnetic core, and the first magnetic core and the second magnetic core form a first closed magnetic circuit and a second closed magnetic circuit.

[0012] In an embodiment, the second magnetic core includes a first magnetic side column, a second magnetic side column, a third magnetic side column and a magnetic middle column.

[0013] The second magnetic side column, the third magnetic side column and the magnetic middle column are connected in an E shape with the first magnetic side column, and the end of the second magnetic side column away from the first magnetic side column, the end of the third magnetic side column away from the first magnetic side column and the end of the magnetic middle column away from the first magnetic side column form the opening;

[0014] The first magnetic core is arranged close to the end of the magnetic middle column away from the first magnetic side column, the end of the second magnetic side column away from the first magnetic side column and the end of the third magnetic side column away from the first magnetic side column, so that the magnetic middle column, the first magnetic side column and the second magnetic side column form the first closed magnetic circuit, and the magnetic middle column, the first magnetic side column and the third magnetic side column form the second closed magnetic circuit.

[0015] In an embodiment, the second magnetic integrated assembly further comprises a DC / DC low-voltage winding and an inductor winding, and the DC / DC low-voltage winding and the inductor winding are respectively arranged around the second magnetic core.

[0016] In an embodiment, the high-voltage winding comprises a primary winding and a secondary winding.

[0017] The primary winding and the secondary winding are arranged in a radial direction of the first magnetic core.

[0018] Alternatively, the primary winding and the secondary winding are arranged in an axial direction of the first magnetic core.

[0019] In an embodiment, the first magnetic core comprises a first magnetic seat and a second magnetic seat, the first magnetic seat and the second magnetic seat are connected to form a magnetic leakage space, one of the primary winding and the secondary winding is arranged around the first magnetic seat, and the other of the primary winding and the secondary winding is arranged around the second magnetic seat.

[0020] In an embodiment, the first magnetic seat has a first magnetic column and a second magnetic column arranged in parallel, the second magnetic seat has a third magnetic column and a fourth magnetic column arranged in parallel, the third magnetic column is connected with the first magnetic column, and the fourth magnetic column is connected with the second magnetic column; the primary winding comprises a first winding and a second winding, the secondary winding comprises a third winding and a fourth winding, and the first winding, the second winding, the third winding and the fourth winding are respectively arranged around a magnetic column.

[0021] In an embodiment, the first magnetic seat further has a first magnetic support, the first magnetic support connects the first magnetic column and the second magnetic column, and the first magnetic support is arranged at an opening of the second magnetic core to form at least one closed magnetic circuit with the second magnetic core.

[0022] And / or, the second magnetic base further has a second magnetic support, the second magnetic support connecting the third magnetic column and the fourth magnetic column.

[0023] In an embodiment, one of the winding on the first magnetic column and the winding on the second magnetic column is a primary winding, the other of the winding on the first magnetic column and the winding on the second magnetic column is a secondary winding, and a first distance is provided between the winding on the first magnetic column and the winding on the second magnetic column.

[0024] And / or, one of the winding on the third magnetic column and the winding on the fourth magnetic column is a primary winding, the other of the winding on the third magnetic column and the winding on the fourth magnetic column is a secondary winding, and a second distance is provided between the winding on the third magnetic column and the winding on the fourth magnetic column.

[0025] In an embodiment, the first winding is wound around the first magnetic column, the second winding is wound around the fourth magnetic column, the third winding is wound around the second magnetic column, and the fourth winding is wound around the third magnetic column.

[0026] In an embodiment, the first magnetic integrated assembly further comprises a third magnetic core, the third magnetic core being arranged at the first magnetic core and between the winding on the first magnetic column and the winding on the third magnetic column.

[0027] And / or, the first magnetic integrated assembly further comprises a fourth magnetic core, the fourth magnetic core being arranged at the first magnetic core and between the winding on the second magnetic column and the winding on the fourth magnetic column.

[0028] In an embodiment, the first magnetic integrated assembly further comprises a third magnetic core, the third magnetic core being arranged at the first magnetic core and between the winding on the first magnetic column and the winding on the third magnetic column.

[0029] The first magnetic integrated assembly further comprises a fourth magnetic core, the fourth magnetic core being arranged at the first magnetic core and between the winding on the second magnetic column and the winding on the fourth magnetic column.

[0030] A gap is provided between the third magnetic core and the fourth magnetic core.

[0031] In an embodiment, the first magnetic core is provided with a first clamping groove for clamping the third magnetic core.

[0032] And / or, the first magnetic core is provided with a second clamping groove for clamping the fourth magnetic core.

[0033] In an embodiment, the integrated magnetic device further comprises a base, and the first magnetic integrated assembly and the second magnetic integrated assembly are arranged separately at the base.

[0034] The utility model discloses still propose a kind of vehicle-mounted power supply, including the integrated magnetic device as described above.

[0035] The utility model discloses still propose a kind of vehicle, including the vehicle-mounted power supply as described above.

[0036] Compared with prior art, the utility model has the following beneficial effects:

[0037] The technical scheme of the utility model includes first magnetic integrated assembly formed by integrated transformer and second magnetic integrated assembly formed by output inductance and second transformer, since leakage inductance of integrated transformer can form resonant inductance, additional battery is not needed for separate resonant inductance, the quantity of required magnetic core is reduced, and the cost and overall size of integrated magnetic device are reduced;Output inductance and second transformer are arranged in common back, which means that, in physical layout, output inductance and second transformer are designed to share a common back, that is, part of devices in output inductance and second transformer are shared with each other, the weight and volume of second magnetic integrated assembly are reduced by sharing devices;First magnetic integrated assembly and second magnetic integrated assembly are arranged in common back, that is, in physical layout, first magnetic integrated assembly and second magnetic integrated assembly are also designed to share a common back, that is, devices in first magnetic integrated assembly and second magnetic integrated assembly are shared with each other, and the weight and volume of integrated magnetic device are further reduced.The weight and volume of integrated magnetic device are reduced by integrating multiple times as described above, so that the target of lightweight and small volume of integrated magnetic device is achieved, and the weight and volume of vehicle-mounted power supply are reduced, so that the vehicle-mounted power supply occupies small space in electric vehicle, and the space utilization is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the utility model, and together with the specification, serve to explain the principle of the utility model.

[0039] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0040] Figure 1 It is a structural schematic view of transformer inductance in prior art;

[0041] Figure 2 It is a structural schematic view of integrated magnetic device provided by the utility model;

[0042] Figure 3 It is Figure 2Structure diagram of a first magnetic integrated component embodiment;

[0043] Figure 4 For Figure 2 Structure diagram of a second magnetic integrated component embodiment;

[0044] Figure 5 For Figure 2 Structure diagram of another embodiment.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] 100, integrated magnetic device;

[0047] 1, first magnetic integrated component; 10, integrated transformer; 11, first magnetic core; 111, first magnetic seat; 111a, first magnetic column; 111b, second magnetic column; 111c, first magnetic support; 112, second magnetic seat; 112a, third magnetic column; 112b, fourth magnetic column; 112c, second magnetic support; 12, high-voltage winding; 121, primary winding; 121a, first winding; 121b, second winding; 122, secondary winding; 122a, third winding; 122b, fourth winding; 13, third magnetic core; 14, fourth magnetic core;

[0048] 2, second magnetic integrated component; 20a, second transformer; 21, second magnetic core; 201, opening; 211, first magnetic side column; 212, second magnetic side column; 213, third magnetic side column; 214, magnetic middle column; 22, low-voltage winding; 20b, output inductor;

[0049] 3, base.

[0050] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0052] In the vehicle power supply, the whole power density is continuously improved, and the light weight and small size are important indexes. With the increase of power, the magnetic components (transformer, inductor) in the power supply circuit become larger and larger in size, which cannot meet the requirements. The integration of resonant inductor and transformer, and the integration of output inductor and transformer become an important means to reduce weight and size. After the integration of the automobile power supply, the high-voltage DC conversion transformer and the low-voltage DC conversion transformer appear in pairs, and the core modular design is an important means to reduce the size, but the conventional physical integration method cannot meet the requirements of the vehicle, and a multi-in-one integrated magnetic device emerges as the times require.

[0053] Referring to Figure 1 The existing vehicle power supply includes an OBC main transformer and a DC / DC main transformer, and the OBC main transformer and the DC / DC main transformer are independently arranged, and both components have magnetic devices, so that the overall size and weight are large, and the size and weight of the vehicle power supply are large.

[0054] The utility model provides a kind of integrated magnetic device 100, to reduce the weight and size of magnetic device in vehicle power supply, to reduce the weight and size of vehicle power supply, so that the space of vehicle power supply is small in electric vehicle, improve the space utilization of electric vehicle.

[0055] Referring to Figure 2 In an embodiment of the utility model, the integrated magnetic device 100 includes a first magnetic integrated component 1 composed of an integrated transformer 10 and a second magnetic integrated component 2 composed of an output inductor 20b and a second transformer 20a, and the output inductor 20b and the second transformer 20a are arranged in common back; the first magnetic integrated component 1 and the second magnetic integrated component 2 are arranged in common back.

[0056] It should be noted that the integrated magnetic device 100 is applied to a vehicle-mounted power supply. The vehicle-mounted power supply includes an OBC circuit unit and a DC / DC circuit unit. The OBC circuit unit is used to convert the mains into high-voltage current and then output to the power battery pack of the electric vehicle. The OBC circuit unit includes a first filter circuit, a first rectifier circuit, a power factor correction circuit, a first switch circuit, the first magnetic integrated assembly 1 of the integrated magnetic device 100, a second rectifier circuit, and a second filter circuit; the mains is sequentially input to the power battery pack through the first filter circuit, the first rectifier circuit, the power factor correction circuit, the first switch circuit, the first magnetic integrated assembly 1 of the integrated magnetic device 100, the second rectifier circuit, and the second filter circuit, so as to realize the charging of the mains to the power battery pack. The DC / DC circuit unit is used to convert the high-voltage direct current into low-voltage direct current and then output to the low-voltage load of the electric vehicle. The DC / DC circuit unit includes a third filter circuit, a second switch circuit, the second magnetic integrated assembly 2 of the integrated magnetic device 100, a third rectifier circuit, and a fourth filter circuit; the power battery pack is sequentially output to the low-voltage load and the low-voltage storage battery through the third filter circuit, the second switch circuit, the second magnetic integrated assembly 2 of the integrated magnetic device 100, the third rectifier circuit, and the fourth filter circuit, so as to realize the charging of the power battery pack to the low-voltage load.

[0057] In the embodiment, the first magnetic integrated assembly 1 includes the integrated transformer 10, and the integrated transformer 10 can include the first magnetic core 11 and the high-voltage winding 12, and the high-voltage winding 12 is wound on the first magnetic core 11. The high-voltage winding 12 has a first power input end and a first power output end, and mainly undertakes the function of voltage conversion. According to the principle of electromagnetic induction, the electric energy input by the first power input end is transmitted to the first power output end through the first magnetic core 11 by changing the turn ratio of the high-voltage winding 12, so as to realize the adjustment and conversion of voltage. In addition, the winding mode of the high-voltage winding 12 can be changed, and / or the gap between the high-voltage winding 12 and the first magnetic core 11 can be changed, the leakage inductance of the integrated magnetic device 100 is amplified, the leakage inductance is used as the resonance inductance of the first magnetic integrated assembly 1, the circuit loss of the integrated magnetic device 100 is reduced, the efficiency and stability of the integrated magnetic device 100 are improved, and compared with the existing OBC main transformer, the resonance inductance magnetic core and the resonance inductance winding are not needed, that is, the resonance inductance magnetic core and the resonance inductance winding are removed, the number of parts is reduced, the weight and volume of the first magnetic integrated assembly 1 are reduced, and the weight and volume of the integrated magnetic device 100 are reduced.

[0058] The second magnetic integrated assembly 2 comprises an output inductor 20b and a second transformer 20a, wherein the second transformer can comprise a second magnetic core 21 and a low-voltage winding 22, and the low-voltage winding 22 is wound around the second magnetic core 21. The low-voltage winding has a second power input end and a second power output end, and the low-voltage winding 22 also undertakes the function of voltage conversion. By changing the number of turns of the low-voltage winding 22, according to the principle of electromagnetic induction, the electric energy input from the second power input end is transmitted to the second power output end through the second magnetic core 21, so as to realize the adjustment and conversion of voltage. It is worth noting that the second transformer 20a and the output inductor 20b are arranged in a back-to-back manner, which means that the second transformer 20a and the output inductor 20b are physically designed to share a back structure, which is equivalent to that a part of the second transformer 20a shares the output inductor 20b, and / or a part of the output inductor 20b shares the second transformer 20a, so that the weight and volume of the second magnetic integrated assembly 2 can be significantly reduced, and the structure of the entire second magnetic integrated assembly 2 is more compact.

[0059] In addition, the first magnetic integrated assembly 1 and the second magnetic integrated assembly 2 are also arranged in a back-to-back manner, which means that the first magnetic integrated assembly 1 and the second magnetic integrated assembly 2 are also physically designed to share a back structure, which is equivalent to that a part of the first magnetic integrated assembly 1 shares the second magnetic integrated assembly 2, and / or a part of the second magnetic integrated assembly 2 shares the first magnetic integrated assembly 1, so that on the basis of the above structure, the weight and volume of the integrated magnetic device 100 can be further reduced. The back-to-back arrangement of the first magnetic integrated assembly 1 and the second magnetic integrated assembly 2 also means that the integrated magnetic device 100 is highly integrated, and all the devices thereof can be installed as a module, which simplifies the assembly process of the integrated magnetic device 100 and improves the production efficiency.

[0060] The utility model discloses a technical scheme includes by integrated transformer 10 constitutes the first magnetic integrated component 1 and by output inductance 20b and second transformer 20a constitute the second magnetic integrated component 2, because the leakage inductance of integrated transformer 10 can constitute resonant inductance, so need not provide additional electric core for separate resonant inductance, reduced the quantity of required magnetic core, reduced the cost and overall size of integrated magnetic device, output inductance 20b and second transformer 20a are set up in common back, this means that on physical layout, output inductance 20b and second transformer 20a are designed to share a common back, that is, a part of device of output inductance 20b and second transformer 20a is mutually shared, by the mode of sharing device, reduce the weight and volume of second magnetic integrated component 2, first magnetic integrated component 1 and second magnetic integrated component 2 are set up in common back, that is, on physical layout, first magnetic integrated component 1 and second magnetic integrated component 2 are also designed to share a common back, that is, the device of first magnetic integrated component 1 and second magnetic integrated component 2 is mutually shared, further reduce the weight and volume of integrated magnetic device. Through the above-mentioned multiple integration, make integrated magnetic device reach the lightweight, small volume target, and the weight and volume reduction of integrated magnetic device can reduce the weight and volume of vehicle-mounted power supply, so that the vehicle-mounted power supply occupies the small space of electric vehicle, improves its space utilization.

[0061] With reference to Figure 3 In an embodiment of the utility model, the integrated transformer 10 includes a first magnetic core 11 and a high-voltage winding 12, the high-voltage winding 12 is wound around the first magnetic core 11, and the leakage inductance between the high-voltage windings 12 constitutes the resonant inductance of the first magnetic integrated component 1. In addition, the leakage inductance between the high-voltage winding 12 and the first magnetic core 11 also constitutes the resonant inductance of the first magnetic integrated component 1.

[0062] In the embodiment, the first magnetic core 11 is a core component of the integrated transformer 10, used to guide the magnetic field and reduce energy loss; the high-voltage winding 12 wound on the first magnetic core 11 is responsible for processing alternating current (AC) of a high-voltage level, which is usually used to convert input AC into high-voltage direct current (DC). It can be understood that when the current passes through the high-voltage winding 12, not all the magnetic flux can be fully coupled by the secondary winding 122 in the high-voltage winding 12, and the uncoupled part will form self-induction in the winding itself, and this part of self-induction is the leakage inductance, which can be designed to act as part of the resonant inductance of the first magnetic integrated assembly 1. In addition to the leakage inductance between the high-voltage windings 12, there is also a certain leakage inductance between the high-voltage windings 12 and the first magnetic core 11, which can also be used to constitute the resonant inductance of the first magnetic integrated assembly 1. By using the inherent leakage inductance of the integrated transformer 10 as the resonant inductance, there is no need for additional magnetic cores and windings to build the resonant inductance, which reduces the material cost of the first magnetic integrated assembly 1 and saves the installation space of the first magnetic integrated assembly 1, reduces the weight and volume of the first magnetic integrated assembly 1, and optimizes the first magnetic integrated assembly 1 to work more efficiently because the loss caused by the additional magnetic cores and windings is reduced.

[0063] With reference to Figure 3 and Figure 4 In an embodiment of the utility model, the second transformer 20a includes a second magnetic core 21 and a low-voltage winding 22, the low-voltage winding 22 and the output inductor 20b are wound on the second magnetic core 21 respectively, the second magnetic core 21 is provided with an opening 201, and the first magnetic core 11 is arranged at the opening 201 of the second magnetic core 21 to form at least one closed magnetic circuit with the second magnetic core 21.

[0064] In the embodiment, the second magnetic core 21 is a core component of the second transformer 20a, used for guiding magnetic field and reducing energy loss; the low-voltage winding 22 wound on the second magnetic core 21 is responsible for processing low-voltage direct current (DC), usually used for converting the converted high-voltage alternating current into low-voltage direct current (DC) suitable for charging the battery of the vehicle power supply. The output inductor 20b is wound on the second magnetic core 21 together with the low-voltage winding 22, which means that they share the same magnetic circuit, enhancing the integration of the second magnetic integrated assembly 2, and compared with the existing DC / DC main transformer, the output inductor 20b and the low-voltage winding 22 are not wound on a magnetic core respectively, by reducing the number of magnetic cores, the weight and volume of the second magnetic integrated assembly 2 are reduced. The second magnetic core 2121 is provided with an opening 2014, and the first magnetic core 1111 is installed at the opening 2014 of the second magnetic core 2121 to form at least one closed magnetic circuit with the second magnetic core 2121. It can be understood that the first magnetic core 1111 has a part of the magnetic core shared with the second magnetic core 2121, and the shared part of the magnetic core can form one or more closed magnetic circuits with the second magnetic core 2121, that is, by sharing the magnetic core of the first magnetic core 1111 and the second magnetic core 2121, the magnetic core originally located at the opening 2014 of the second magnetic core 2121 is removed, thereby reducing the weight and volume of the second magnetic core 2121, reducing the weight and volume of the second magnetic integrated assembly 22, and reducing the volume of the integrated magnetic device 100. Moreover, by embedding the first magnetic core 11 in the opening 201 of the second magnetic core 21, the integrated transformer 10 of the first magnetic integrated assembly 1 and the second transformer 20a of the second magnetic integrated assembly 2 are not only physically closely connected, but also magnetically associated with each other, greatly improving the integration. In addition, the design of the shared magnetic circuit ensures the effective use of the magnetic flux of the integrated magnetic device 100, reduces the leakage magnetic flux, and improves the conversion efficiency.

[0065] With reference to Figure 3 and Figure 4 In an embodiment of the utility model, the second magnetic core 21 is E-shaped magnetic core, the first magnetic core 11 and the second magnetic core 21 form first closed magnetic circuit and second closed magnetic circuit.

[0066] In the embodiment, the second magnetic core 21 is E-shaped magnetic core, the first magnetic core 11 and the second magnetic core 21 form first closed magnetic circuit and second closed magnetic circuit.

[0067] With reference to Figure 3 and Figure 4In an embodiment of the utility model, the second magnetic core 21 includes a first magnetic side column 211, a second magnetic side column 212, a third magnetic side column 213 and a magnetic middle column 214;

[0068] The second magnetic side column 212, the third magnetic side column 213 and the magnetic middle column 214 are connected in E shape with the first magnetic side column 211, and the end of the second magnetic side column 212 away from the first magnetic side column 211, the end of the third magnetic side column 213 away from the first magnetic side column 211 and the end of the magnetic middle column 214 away from the first magnetic side column 211 form the opening 201;

[0069] The first magnetic core 11 is arranged close to the end of the magnetic middle column 214 away from the first magnetic side column 211, the end of the second magnetic side column 212 away from the first magnetic side column 211 and the end of the third magnetic side column 213 away from the first magnetic side column 211, so that the magnetic middle column 214, the first magnetic side column 211 and the second magnetic side column 212 form the first closed magnetic circuit, and the magnetic middle column 214, the first magnetic side column 211 and the third magnetic side column 213 form the second closed magnetic circuit.

[0070] In the embodiment, the second magnetic side column 212 and the third magnetic side column 213 are arranged in opposite parallel along the axial direction of the first magnetic core 11, and the second magnetic side column 212, the third magnetic side column 213 and the third magnetic side column 213 respectively have opposite first ends and second ends, the first end of the second magnetic side column 212 and the first end of the third magnetic side column 213 are connected with the first end and the second end of the first magnetic side column 211 one by one, and are located on the same side of the first magnetic side column 211, the first end of the magnetic middle column 214 is connected with the first magnetic side column 211, and is arranged between the second magnetic side column 212 and the third magnetic side column 213. The second end of the second magnetic side column 212, the second end of the third magnetic side column 213 and the second end of the magnetic middle column 214 form the opening 201. The first magnetic core 11 is arranged close to the second end of the magnetic middle column 214, the second end of the second magnetic side column 212 and the second end of the third magnetic side column 213, so that the magnetic middle column 214, the first magnetic side column 211 and the second magnetic side column 212 form the first closed magnetic circuit, and the magnetic middle column 214, the first magnetic side column 211 and the third magnetic side column 213 form the second closed magnetic circuit.

[0071] Referring to Figure 3 In an embodiment of the utility model, the high-voltage winding 12 includes a primary winding 121 and a secondary winding 122; the primary winding 121 and the secondary winding 122 are arranged in radial direction of the first magnetic core 11; or, the primary winding 121 and the secondary winding 122 are arranged in axial direction of the first magnetic core 11.

[0072] In the embodiment, by limiting the interval arrangement of the primary winding 121 and the secondary winding 122, the gap between the primary winding 121 and the secondary winding 122 is changed, the leakage inductance of the integrated magnetic device 100 is amplified, the leakage inductance is used as a resonance inductance, the circuit loss of the integrated magnetic device 100 is reduced, and the efficiency and stability of the integrated magnetic device 100 are improved.

[0073] With reference to Figure 3 In the embodiment, the first magnetic core 11 includes a first magnetic seat 111 and a second magnetic seat 112, the first magnetic seat 111 and the second magnetic seat 112 are connected to form a leakage magnetic space, one of the primary winding 121 and the secondary winding 122 is wound on the first magnetic seat 111, and the other of the primary winding 121 and the secondary winding 122 is wound on the second magnetic seat 112.

[0074] As an example, the first magnetic seat 111 and the second magnetic seat 112 are connected to form a leakage magnetic space, and the first magnetic seat 111 and the second magnetic seat 112 are arranged opposite along the radial direction of the first magnetic core 11, the primary winding 121 can be wound on the first magnetic seat 111, and the secondary winding 122 can be wound on the second magnetic seat 112; or the primary winding 121 can be wound on the second magnetic seat 112, and the secondary winding 122 can be wound on the first magnetic seat 111. By adjusting the gap between the primary winding 121 and the secondary winding 122, the size of the leakage inductance space between the primary winding 121 and the secondary winding 122 is changed, that is, the size of the leakage inductance of the high-voltage winding 12 is changed, the circuit loss of the integrated magnetic device 100 is adjusted, and the efficiency and stability of the integrated magnetic device 100 are improved; as another example, the first magnetic seat 111 and the second magnetic seat 112 are connected to form a leakage magnetic space, and the first magnetic seat 111 and the second magnetic seat 112 are arranged opposite along the axial direction of the first magnetic core 11, the primary winding 121 can be wound on the first magnetic seat 111, and the secondary winding 122 can be wound on the second magnetic seat 112; or the primary winding 121 can be wound on the second magnetic seat 112, and the secondary winding 122 can be wound on the first magnetic seat 111, by adjusting the distance between the primary winding 121 and the secondary winding 122, the size of the leakage inductance of the high-voltage winding 12 can also be changed, the purpose of adjusting the circuit loss of the integrated magnetic device 100, and improving the efficiency and stability of the integrated magnetic device 100 is achieved. In addition, by arranging the first magnetic core 11 into the first magnetic seat 111 and the second magnetic seat 112, the assembly efficiency of the primary winding 121 and the secondary winding 122 can be improved, and the assembly efficiency of the integrated magnetic device 100 is further improved.

[0075] With reference to Figure 3In the embodiment of the utility model, the first magnetic seat 111 has the first magnetic column 111a and the second magnetic column 111b which are arranged in parallel, the second magnetic seat 112 has the third magnetic column 112a and the fourth magnetic column 112b which are arranged in parallel, the third magnetic column 112a is connected with the first magnetic column 111a, and the fourth magnetic column 112b is connected with the second magnetic column 111b; the primary winding 121 comprises the first winding 121a and the second winding 121b, the secondary winding 122 comprises the third winding 122a and the fourth winding 122b, and the first winding 121a, the second winding 121b, the third winding 122a and the fourth winding 122b are respectively arranged around a magnetic column.

[0076] In the embodiment, by limiting the first magnetic seat 111 to have the first magnetic column 111a and the second magnetic column 111b and the second magnetic seat 112 to have the third magnetic column 112a and the fourth magnetic column 112b, the first winding 121a, the second winding 121b, the third winding 122a and the fourth winding 122b can be respectively arranged around a magnetic column, for example, the first winding 121a is arranged around the first magnetic column 111a, the second winding 121b is arranged around the second magnetic column 111b, the third winding 122a is arranged around the second magnetic column 111b, and the fourth winding 122b is arranged around the fourth magnetic column 112b, so that the high-voltage winding 12 is reasonably arranged, and the assembly efficiency of the windings is improved.

[0077] Referring to Figure 3 And Figure 4 In the embodiment of the utility model, the first magnetic seat 111 further has a first magnetic support 111c, the first magnetic support 111c connects the first magnetic column 111a and the second magnetic column 111b, and the first magnetic support 111c is arranged at the opening 201 of the second magnetic core 21 to form at least one closed magnetic circuit together with the second magnetic core 21; and / or the second magnetic seat 112 further has a second magnetic support 112c, and the second magnetic support 112c connects the third magnetic column 112a and the fourth magnetic column 112b.

[0078] In the embodiment, the first magnetic support 111c is arranged along the axial direction of the first magnetic core 11, the first magnetic support 111c connects the first magnetic column 111a and the second magnetic column 111b, and an end of the first magnetic support 111c away from the first magnetic column 111a and the second magnetic column 111b is installed at the opening 201 formed by the second magnetic side column 212, the third magnetic side column 213 and the magnetic middle column 214, so as to form a first closed magnetic circuit with the magnetic middle column 214, the first magnetic side column 211 and the second magnetic side column 212, and form a second closed magnetic circuit with the magnetic middle column 214, the first magnetic side column 211 and the third magnetic side column 213; and / or, the second magnetic support 112c is arranged in parallel with the first magnetic support 111c along the axial direction of the first magnetic core 11, and the second magnetic support 112c connects the third magnetic column 112a and the fourth magnetic column 112b.

[0079] With reference to Figure 3 In the embodiment, one of the windings on the first magnetic column 111a and the windings on the second magnetic column 111b is the primary winding 121, the other of the windings on the first magnetic column 111a and the windings on the second magnetic column 111b is the secondary winding 122, and a first distance is arranged between the windings on the first magnetic column 111a and the windings on the second magnetic column 111b; and / or, one of the windings on the third magnetic column 112a and the windings on the fourth magnetic column 112b is the primary winding 121, the other of the windings on the third magnetic column 112a and the windings on the fourth magnetic column 112b is the secondary winding 122, and a second distance is arranged between the windings on the third magnetic column 112a and the windings on the fourth magnetic column 112b.

[0080] In the embodiment, the winding on the first magnetic column 111a is the first winding 121a, the winding on the second magnetic column 111b is the third winding 122a, a first distance is arranged between the first winding 121a and the third winding 122a, by changing the size of the first distance, the inductance component generated by the incomplete coupling of the magnetic flux from the first winding 121a to the third winding 122a is changed, that is, the leakage inductance generated by the first winding 121a and the third winding 122a is changed, by changing the size of the leakage inductance, the circuit loss of the integrated magnetic device 100 is adjusted, and the efficiency and stability of the integrated magnetic device 100 are improved; and / or, the winding on the third magnetic column 112a is the second winding 121b, the winding on the fourth magnetic column 112b is the fourth winding 122b, a second distance is arranged between the second winding 121b and the fourth winding 122b, by changing the size of the second distance, the inductance component generated by the incomplete coupling of the magnetic flux from the second winding 121b to the fourth winding 122b is changed, that is, the leakage inductance generated by the second winding 121b and the fourth winding 122b is changed, by changing the size of the leakage inductance, the circuit loss of the integrated magnetic device 100 is adjusted, and the efficiency and stability of the integrated magnetic device 100 are improved.

[0081] With reference to Figure 3 In the embodiment, the first winding 121a is wound on the first magnetic column 111a, the second winding 121b is wound on the fourth magnetic column 112b, the third winding 122a is wound on the second magnetic column 111b, and the fourth winding 122b is wound on the third magnetic column 112a.

[0082] In the embodiment, by winding the first winding 121a on the first magnetic column 111a, winding the second winding 121b on the fourth magnetic column 112b, winding the third winding 122a on the second magnetic column 111b, and winding the fourth winding 122b on the third magnetic column 112a, that is, the first winding 121a and the second winding 121b are oppositely arranged in a diagonal direction, and the third winding 122a and the fourth winding 122b are oppositely arranged in a diagonal direction, in this way, the magnetic flux path can flow in a staggered manner in a diagonal direction, so that the magnetic flux intensity of the high-voltage winding 12 is uniform, and the uniformity of the magnetic flux intensity can reduce the alternating current resistance and loss of the high-voltage winding 12.

[0083] With reference to Figure 3In an embodiment of the utility model, the first magnetic integrated assembly 1 further includes a third magnetic core 13, the third magnetic core 13 is arranged on the first magnetic core 11 and is located between the winding on the first magnetic column 111a and the winding on the third magnetic column 112a, and / or the first magnetic integrated assembly 1 further includes a fourth magnetic core 14, the fourth magnetic core 14 is arranged on the first magnetic core 11 and is located between the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b.

[0084] In the embodiment, the winding on the first magnetic column 111a and the winding on the third magnetic column 112a are provided with the third magnetic core 13, if the third magnetic core 13 is not completely closed but has an air gap, the magnetic permeability of the winding on the first magnetic column 111a and the winding on the third magnetic column 112a will be reduced, the magnetic resistance of the winding on the first magnetic column 111a and the winding on the third magnetic column 112a will be increased, and the leakage inductance of the high-voltage winding 12 will be increased; if the third magnetic core 13 is a closed structure and does not need an air gap, the magnetic permeability of the winding on the first magnetic column 111a and the winding on the third magnetic column 112a can be improved, the magnetic resistance of the winding on the first magnetic column 111a and the winding on the third magnetic column 112a can be reduced, and the leakage inductance of the high-voltage winding 12 can be reduced; and / or the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b are provided with the fourth magnetic core 14, if the fourth magnetic core 14 is not completely closed but has an air gap, the magnetic permeability of the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b will be reduced, the magnetic resistance of the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b will be increased, and the leakage inductance of the high-voltage winding 12 will be increased; if the fourth magnetic core 14 is a closed structure and does not need an air gap, the magnetic permeability of the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b can be improved, the magnetic resistance of the winding on the second magnetic column 111b and the winding on the fourth magnetic column 112b can be reduced, and the leakage inductance of the high-voltage winding 12 can be reduced. Through the above design, it can be known that the leakage inductance of the high-voltage winding 12 can be controlled by increasing the magnetic core.

[0085] Referring to Figure 3 In an embodiment of the utility model, the first magnetic core 11 is provided with a first clamping groove for clamping the third magnetic core 13.

[0086] And / or the first magnetic core 11 is provided with a second clamping groove for clamping the fourth magnetic core 14.

[0087] It can be understood that the fixing modes of the third magnetic core 13 and the fourth magnetic core 14 are various, in the embodiment, a first clamping groove is arranged at the connection position of the first magnetic column 111a and the third magnetic column 112a, the first clamping groove is clamped and matched with the third magnetic core 13, and the third magnetic core 13 is fixed on the first magnetic core 11 in a glue-dropping mode. Through the clamping and glue-dropping mode, on the one hand, the assembly efficiency of the third magnetic core 13 can be improved, and on the other hand, the connection strength of the first magnetic column 111a and the third magnetic column 112a can be improved, and the structural stability of the first magnetic core 11 is improved. In addition, a second clamping groove is arranged at the connection position of the second magnetic column 111b and the fourth magnetic column 112b, the second clamping groove is clamped and matched with the fourth magnetic core 14, and the fourth magnetic core 14 is fixed on the first magnetic core 11 in a glue-dropping mode. Through the clamping and glue-dropping mode, on the one hand, the assembly efficiency of the fourth magnetic core 14 can be improved, and on the other hand, the connection strength of the second magnetic column 111b and the fourth magnetic column 112b can be improved, and the structural stability of the first magnetic core 11 is improved again.

[0088] With reference to Figure 5 In an embodiment of the present application, the integrated magnetic device 100 further comprises a base 3, and the first magnetic integrated assembly 1 and the second magnetic integrated assembly 2 are separately arranged on the base 3.

[0089] In the embodiment, the base 3 provides a stable mounting platform for the first magnetic integrated assembly 1 and the second magnetic integrated assembly 2, which not only allows the two magnetic integrated assemblies to be integrated again to reduce the volume of the integrated magnetic device 100, but also ensures that they remain in a fixed position during operation, especially when facing vibration or other mechanical applications (such as in vehicle applications). The base 3 allows the two magnetic integrated assemblies to be installed and disassembled as a whole, simplifying the manufacturing and maintenance process. In addition, the base 3 can also serve as an effective heat dissipation path, helping to conduct heat from the magnetic assemblies to the external environment or cooling system. For example, the base 3 is made of a high thermal conductivity material (such as aluminum), which can significantly improve the heat dissipation efficiency.

[0090] With reference to Figure 5 The present application also provides a vehicle-mounted power supply, which comprises the integrated magnetic device 100. The specific structure of the integrated magnetic device 100 is referred to the above-mentioned embodiments. Since the vehicle-mounted power supply adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0091] The present application also provides a vehicle, which comprises the vehicle-mounted power supply. The specific structure of the vehicle-mounted power supply is referred to the above-mentioned embodiments. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0092] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, or direct / indirect application in other related technical fields, under the inventive concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. An integrated magnetic device, characterized in that, include: The first magnetic integrated component is composed of an integrated transformer; A second magnetic integrated component consisting of an output inductor and a second transformer, wherein the output inductor and the second transformer are arranged on the same back side; The first magnetic integrated component and the second magnetic integrated component are arranged on the same back side.

2. The integrated magnetic device as described in claim 1, characterized in that, The integrated transformer includes a first magnetic core and a high-voltage winding. The high-voltage winding is wound around the first magnetic core, and the leakage inductance between the high-voltage windings constitutes the resonant inductance of the first magnetic integrated component. And / or, the leakage inductance between the high-voltage winding and the first magnetic core constitutes the resonant inductance of the first magnetic integrated component.

3. The integrated magnetic device as described in claim 2, characterized in that, The second transformer includes a second magnetic core and a low-voltage winding. The low-voltage winding and the output inductor are respectively wound on the second magnetic core. The second magnetic core has an opening. The first magnetic core is disposed at the opening of the second magnetic core so as to form at least one closed magnetic circuit with the second magnetic core.

4. The integrated magnetic device as described in claim 3, characterized in that, The second magnetic core is an E-shaped magnetic core, and the first magnetic core and the second magnetic core together form a first closed magnetic circuit and a second closed magnetic circuit.

5. The integrated magnetic device as described in claim 4, characterized in that, The second magnetic core includes a first magnetic side post, a second magnetic side post, a third magnetic side post, and a magnetic center post; the second magnetic side post, the third magnetic side post, and the magnetic center post are connected to the first magnetic side post in an E-shape, and the opening is formed by the end of the second magnetic side post away from the first magnetic side post, the end of the third magnetic side post away from the first magnetic side post, and the end of the magnetic center post away from the first magnetic side post; The first magnetic core is positioned near the end of the magnetic center post away from the first magnetic edge post, the second magnetic edge post away from the first magnetic edge post, and the third magnetic edge post away from the first magnetic edge post, so that the magnetic center post, the first magnetic edge post, and the second magnetic edge post form the first closed magnetic circuit, and the magnetic center post, the first magnetic edge post, and the third magnetic edge post form the second closed magnetic circuit.

6. The integrated magnetic device as described in claim 3, characterized in that, The high-voltage winding includes a primary winding and a secondary winding; The primary winding and the secondary winding are arranged radially apart along the first magnetic core; Alternatively, the primary winding and the secondary winding are spaced apart along the axial direction of the first magnetic core.

7. The integrated magnetic device as described in claim 6, characterized in that, The first magnetic core includes a first magnetic base and a second magnetic base. The first magnetic base and the second magnetic base are connected and enclosed to form a leakage magnetic space. One of the primary winding and the secondary winding is wound on the first magnetic base, and the other of the primary winding and the secondary winding is wound on the second magnetic base.

8. The integrated magnetic device as described in claim 7, characterized in that, The first magnetic base has a first magnetic post and a second magnetic post arranged in parallel, and the second magnetic base has a third magnetic post and a fourth magnetic post arranged in parallel. The third magnetic post is connected to the first magnetic post, and the fourth magnetic post is connected to the second magnetic post. The primary winding includes a first winding and a second winding, and the secondary winding includes a third winding and a fourth winding. The first winding, the second winding, the third winding, and the fourth winding are each wound on a magnetic post.

9. The integrated magnetic device as described in claim 8, characterized in that, The first magnetic base also has a first magnetic support, which connects the first magnetic post and the second magnetic post. The first magnetic support is located at the opening of the second magnetic core so as to form at least one closed magnetic circuit with the second magnetic core. And / or, the second magnetic base also has a second magnetic support that connects the third magnetic post and the fourth magnetic post.

10. The integrated magnetic device as described in claim 8, characterized in that, One of the windings on the first magnetic post and the windings on the second magnetic post is a primary winding, and the other of the windings on the first magnetic post and the windings on the second magnetic post is a secondary winding. A first distance is provided between the windings on the first magnetic post and the windings on the second magnetic post. And / or, one of the windings on the third magnetic post and the windings on the fourth magnetic post is a primary winding, and the other of the windings on the third magnetic post and the windings on the fourth magnetic post is a secondary winding. A second distance is provided between the windings on the third magnetic post and the windings on the fourth magnetic post.

11. The integrated magnetic device as described in claim 8, characterized in that, The first winding is wound on the first magnetic post, the second winding is wound on the fourth magnetic post, the third winding is wound on the second magnetic post, and the fourth winding is wound on the third magnetic post.

12. The integrated magnetic device as described in claim 8, characterized in that, The first magnetic integrated component further includes a third magnetic core, which is disposed on the first magnetic core and located between the winding on the first magnetic post and the winding on the third magnetic post; And / or, the first magnetic integrated assembly further includes a fourth magnetic core disposed on the first magnetic core and located between the winding on the second magnetic post and the winding on the fourth magnetic post.

13. The integrated magnetic device as described in claim 8, characterized in that, The first magnetic integrated component further includes a third magnetic core, which is disposed on the first magnetic core and located between the winding on the first magnetic post and the winding on the third magnetic post; The first magnetic integrated component further includes a fourth magnetic core, which is disposed on the first magnetic core and located between the winding on the second magnetic post and the winding on the fourth magnetic post; A gap is provided between the third magnetic core and the fourth magnetic core.

14. The integrated magnetic device as described in claim 13, characterized in that, The first magnetic core is provided with a first snap-fit ​​groove for the third magnetic core to snap into; And / or, the first magnetic core is provided with a second locking groove for the fourth magnetic core to engage.

15. The integrated magnetic device according to any one of claims 1 to 14, characterized in that, The integrated magnetic device also includes a base, with the first magnetic integrated component and the second magnetic integrated component respectively disposed on the base.

16. A vehicle-mounted power supply, characterized in that, Including the integrated magnetic device as described in any one of claims 1 to 15.

17. A vehicle, characterized in that, Including the vehicle power supply as described in claim 16.

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